{"id":5846,"date":"2025-06-04T11:29:54","date_gmt":"2025-06-04T03:29:54","guid":{"rendered":"http:\/\/www.washxing.com\/?p=5846"},"modified":"2025-06-18T14:07:06","modified_gmt":"2025-06-18T06:07:06","slug":"cnc-machining-design-for-manufacturing-expert-technical-guide","status":"publish","type":"post","link":"https:\/\/www.washxing.com\/fr\/cnc-machining-design-for-manufacturing-expert-technical-guide\/","title":{"rendered":"Conception de l'usinage CNC pour la fabrication : Guide technique d'expert"},"content":{"rendered":"<section class=\"wp-block-themepark-block-themepark-area block_layout thempark-block undefined\" id=\"\" style=\"background-color:#ffffff;padding-bottom:30px;padding-top:30px;\" data-swiper-parallax=\"-700\"><div class=\"block_layout_in\" style=\"\">\n<div class=\"wp-block-column block_layout_in\"><header class=\"post_title_head\" ><div class=\"title\"><h1 class=\"h1title\" style=\"font-size:22px;color:#1c1c1c;\"> Conception de l'usinage CNC pour la fabrication : Guide technique d'expert <\/h1><\/div><div class=\"description\"style=\"background-color:#ffffff;\"><time style=\"color:#dd9933;\"><i class=\"fa fa-calendar\"><\/i>4 juin 2025<\/time><span style=\"color:#dd9933;\"><i class=\"fa fa-folder\"><\/i><a style=\"color:#dd9933;\" href=\"https:\/\/www.washxing.com\/fr\/category\/resources\/case-studies\/\">\u00c9tudes de cas<\/a> <a style=\"color:#dd9933;\" href=\"https:\/\/www.washxing.com\/fr\/category\/resources\/\">Ressources<\/a> <\/span> <span style=\"color:#dd9933;\"><i class=\"fa fa-eye\"><\/i>3963<\/span><\/div><\/header>\n\n\n<div class=\"wp-block-themepark-block-themepark-xian theme_fang_out\" style=\"text-align:left;\"><div class=\"fangbox\" style=\"width:100%;height:1px;background-color:#666666;\"><\/div><\/div>\n\n\n\n<div class=\"wp-block-themepark-block-themepark-wright content-super-p\" style=\"font-size:16px;line-height:29px;text-indent:2em;color:#666666;\">\n<div class=\"wp-block-column\"><p>Efficient CNC design is key to balancing functionality, cost, and production efficiency. By following these guidelines, you can avoid common design challenges, improve manufacturability, and streamline the production process. From minimizing thin walls and deep cavities to setting reasonable tolerances, each recommendation in this solution helps simplify machining while ensuring quality. Let\u2019s get to it!<\/p>\n<h2>1. Avoid Deep Cavities and Grooves<\/h2>\n<p>The depth of cavities and grooves is typically limited by the cutting tool diameter used to machine internal corners. A good rule of thumb is to keep cavity depth within 3-4 times the tool diameter or groove depth less than 4 times the feature width.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-54849\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/depth-of-groove-optimized.jpg\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/depth-of-groove-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/depth-of-groove-300x229-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/depth-of-groove-150x114-optimized.jpg 150w\" alt=\"depth of groove\" width=\"700\" height=\"534\" \/><\/p>\n<h2>2. Design Larger Internal Corner Radii<\/h2>\n<p>In CNC machining, all internal cuts create rounded corners with a radius equal to half the tool diameter. However, using smaller tools increases machining time. For efficiency, we recommend the corner radius should be greater than one-third of the machining depth. Ideally, design the largest possible internal corner radii and maintain a uniform radius for all internal edges to use the same cutting tool for machining.<\/p>\n<p>If large radii cannot be used due to design requirements (e.g., to fit with a square component), consider the following alternatives to avoid smaller internal corner radii.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-54850 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/rounded-corner-design-in-machining-optimized.jpg\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/rounded-corner-design-in-machining-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/rounded-corner-design-in-machining-300x133-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/rounded-corner-design-in-machining-150x67-optimized.jpg 150w\" alt=\"rounded corner design in machining\" width=\"700\" height=\"311\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/rounded-corner-design-in-machining-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/rounded-corner-design-in-machining-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/rounded-corner-design-in-machining-300x133-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/rounded-corner-design-in-machining-150x67-optimized.jpg 150w\" data-sizes=\"(max-width: 700px) 100vw, 700px\" data-ll-status=\"loaded\" \/><\/p>\n<h2>3. Avoid Thin Walls<\/h2>\n<p>The features of thin walls are prone to vibration during machining, especially in taller features. For metal parts, the minimum wall thickness is recommended to be 0.5-0.8 mm, while for plastic parts, it should be 1.0-1.5 mm. If walls are structural or involve tall features, increase thickness accordingly. For thin-walled designs that must be required, combining CNC machining with sheet metal riveting is a cost-effective solution.<\/p>\n<p>Additionally, for sheet parts with a thickness of 6 mm or less, we recommend to be designed for standard sheet thicknesses for procurement.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-54851 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/thin-walls-in-machined-parts-optimized.jpg\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/thin-walls-in-machined-parts-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/thin-walls-in-machined-parts-300x184-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/thin-walls-in-machined-parts-150x92-optimized.jpg 150w\" alt=\"thin walls in machined parts\" width=\"700\" height=\"429\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/thin-walls-in-machined-parts-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/thin-walls-in-machined-parts-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/thin-walls-in-machined-parts-300x184-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/thin-walls-in-machined-parts-150x92-optimized.jpg 150w\" data-sizes=\"(max-width: 700px) 100vw, 700px\" data-ll-status=\"loaded\" \/><\/p>\n<h2>4. Avoid Deep Holes<\/h2>\n<p>For both blind and through holes, the depth should not exceed four times the diameter of holes, the minimum hole diameter is 1 mm, and standard-sized holes are preferable. Standard drill bits are efficient and precise, whereas non-standard holes require end mills, increasing costs. For blind holes, note that drill bits create a 135\u00b0 tapered angle at the bottom, whereas machined by an end mill is flat.<\/p>\n<h2>5. Use Standard Threads<\/h2>\n<p>When designing threads, prioritize standard sizes, the larger threads, the easier it is to process. Thread length should not exceed three times the hole diameter. For blind hole threading, leave at least half the hole diameter as the extra depth at the bottom.<\/p>\n<p>For large-diameter threaded holes or studs, allow for a hole recess at the bottom of the threads to ensure that the threads can be fully tightened. Consider also using inserts such as threaded coils or copper nuts, which are more durable than bare threads, especially in materials such as aluminum or plastic, and are easy to install.<\/p>\n<h2>6. Minimize the Number of Clamping<\/h2>\n<p>To ensure machining accuracy, minimize the number of times the part is clamped. Ideally, all machining should be completed in a single setup. If the part\u2019s structure requires machining from different orientations, multiple setups or multi-axis CNC machines may be necessary, increasing costs. For example, the left design below requires two clampings, while the right design can be completed in one.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-54852 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/optimized-cnc-design-optimized.jpg\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/optimized-cnc-design-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/optimized-cnc-design-300x133-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/optimized-cnc-design-150x66-optimized.jpg 150w\" alt=\"optimized cnc design\" width=\"700\" height=\"310\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/optimized-cnc-design-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/optimized-cnc-design-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/optimized-cnc-design-300x133-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/optimized-cnc-design-150x66-optimized.jpg 150w\" data-sizes=\"(max-width: 700px) 100vw, 700px\" data-ll-status=\"loaded\" \/><\/p>\n<h2>7. Avoid Non-Functional Aesthetic Features<\/h2>\n<p>Non-functional aesthetic features, such as polishing, anodizing, painting, or plating, add post-processing costs. Unless necessary, avoid these designs to reduce machining time and expenses.<\/p>\n<h2>8. Avoid Designing Small Features<\/h2>\n<p>Most CNC machines have a minimum tool diameter of 2.5 mm. The smaller the diameter of the tool, the more likely it is to break, requiring slower feed rates and increased machining time. Unless required, avoid small features. At Washxing, our CNC machines can use tools with diameters as small as 0.3 mm, achieving fine corner radii as small as 0.15 mm.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-54853 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/cnc-machining-process-optimized.jpg\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/cnc-machining-process-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/cnc-machining-process-300x177-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/cnc-machining-process-150x89-optimized.jpg 150w\" alt=\"cnc machining process\" width=\"700\" height=\"414\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/cnc-machining-process-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/cnc-machining-process-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/cnc-machining-process-300x177-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/cnc-machining-process-150x89-optimized.jpg 150w\" data-sizes=\"(max-width: 700px) 100vw, 700px\" data-ll-status=\"loaded\" \/><\/p>\n<h2>9. Avoid Unmachinable Features<\/h2>\n<p>Not all design features are feasible for CNC machining. For example, closed-end holes and U-shaped holes cannot be directly machined. Holes that are closed at both ends need to be processed as blind holes first, and then a threaded assembly in the top area of the hole to make the hole closed. In addition, U-shaped holes need to be processed by splitting parts.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-54855 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/special-holes-in-cnc-machining-optimized.jpg\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/special-holes-in-cnc-machining-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/special-holes-in-cnc-machining-300x155-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/special-holes-in-cnc-machining-150x77-optimized.jpg 150w\" alt=\"special holes in cnc machining\" width=\"700\" height=\"361\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/special-holes-in-cnc-machining-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/special-holes-in-cnc-machining-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/special-holes-in-cnc-machining-300x155-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/special-holes-in-cnc-machining-150x77-optimized.jpg 150w\" data-sizes=\"(max-width: 700px) 100vw, 700px\" data-ll-status=\"loaded\" \/><\/p>\n<h2>10. Avoid Small or Raised Text<\/h2>\n<p>For marking part numbers or logos, avoid complex text designs. Laser engraving or etching is often a better option. If milling text is necessary, choose recessed instead of raised fonts, with a depth no greater than 0.3 mm and appropriately sized lettering.<\/p>\n<h2>11. Consider Undercuts<\/h2>\n<p>Undercut designs, such as T-slots and dovetail grooves, require specialized T-slot cutters. Standard dovetail angles are 45\u00b0 or 60\u00b0. Ensure the T-slot width at the top is larger than the cutter diameter, typically four times the engagement depth. If the undercut is part of a through feature, side machining is possible. For circular dovetails with seals, include an entry point with a diameter matching the dovetail\u2019s maximum width.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-54854 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/t-slots-and-dovetails-optimized.jpg\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/t-slots-and-dovetails-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/t-slots-and-dovetails-300x132-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/t-slots-and-dovetails-150x66-optimized.jpg 150w\" alt=\"t-slots and dovetails\" width=\"700\" height=\"307\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/t-slots-and-dovetails-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/t-slots-and-dovetails-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/t-slots-and-dovetails-300x132-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/t-slots-and-dovetails-150x66-optimized.jpg 150w\" data-sizes=\"(max-width: 700px) 100vw, 700px\" data-ll-status=\"loaded\" \/><\/p>\n<h2>12. Avoid External R Angle on Part Edges<\/h2>\n<p>To prevent parts from being scratched during handling or assembly, consider chamfers or external radii. External radii require ball-end mills or custom tools for multiple passes, while a 45\u00b0 chamfer can be completed in one pass using a chamfer tool. For efficiency, prioritize 45\u00b0 chamfers on part edges.<\/p>\n<h2>13. Set Tolerances Reasonably<\/h2>\n<p>For metal parts, unspecified dimensional tolerances typically meet ISO 2768-fH standards, while plastic parts conform to ISO 2768-mK. Overly tight tolerances increase machining difficulty and time. Only specify tight tolerances when necessary. For assembly fits, metal parts can typically achieve IT7 grade tolerances, such as H7 for holes and h7 for shafts. The smaller the tolerance grade, the greater the machining difficulty.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-54856 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/complex-CNC-machined-parts-optimized.jpg\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/complex-CNC-machined-parts-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/complex-CNC-machined-parts-300x160-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/complex-CNC-machined-parts-150x80-optimized.jpg 150w\" alt=\"complex CNC machined parts\" width=\"700\" height=\"373\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/complex-CNC-machined-parts-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/complex-CNC-machined-parts-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/complex-CNC-machined-parts-300x160-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/complex-CNC-machined-parts-150x80-optimized.jpg 150w\" data-sizes=\"(max-width: 700px) 100vw, 700px\" data-ll-status=\"loaded\" \/><\/p>\n<p>By applying these CNC machining design tips, you can enhance manufacturability, reduce costs, and improve efficiency. At Washxing, our advanced CNC machining capabilities\u00a0and expert team are ready to bring your designs to life with precision and quality. Whether you need prototypes or end-use parts, contact us today to get a free DFM for your projects!<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div><div class=\"layout_badh\"><\/div><\/section>\n\n\n\n<p><\/p>\n\n\n\n<section class=\"wp-block-themepark-block-themepark-area block_layout thempark-block undefined\" id=\"\" style=\"background-color:#ffffff;padding-bottom:30px;padding-top:30px;\" data-swiper-parallax=\"-700\"><div class=\"block_layout_in\" style=\"\">\n<div class=\"wp-block-column block_layout_in\">\n<div class=\"wp-block-themepark-block-themepark-wright content-super-p\" style=\"font-size:12px;line-height:20px;padding:1px 10px 4px 10px;\">\n<div class=\"wp-block-column\">\n<h2 class=\"wp-block-heading has-text-align-left has-black-color has-text-color has-link-color has-medium-font-size wp-elements-03e3bd26e3714570f9cb9e0c231642cf\">Recommandations <\/h2>\n\n\n\n<p class=\"has-text-align-center has-monte-white-color has-text-color has-link-color has-normal-font-size wp-elements-a419f2b814e1bdd68ac5a703475046d3\"><\/p>\n\n\n\n<div class=\"wp-block-themepark-block-themepark-xian theme_fang_out\" style=\"text-align:left;padding-top:8px;padding-bottom:33px;\"><div class=\"fangbox\" style=\"width:21px;height:4px;background-color:#f29900;\"><div class=\"bkbor\" style=\"width:218px;background-color:#f29900;\"><\/div><\/div><\/div>\n<\/div>\n<\/div>\n\n\n<div class=\"product_loop  radius   mian_loop\" id=\"pro_list_2\"><div class=\"product_post  dbms h_w\" ><div class=\"product_info\"><h3 class=\"pro_title date-title-box\"><a href=\"https:\/\/www.washxing.com\/fr\/what-is-sfm-a-complete-guide-to-surface-feet-per-minute-in-machining-5\/\"><div class=\"date-title\"><time><span>16<\/span><span>2025.05<\/span> <\/time><span class=\"tittext\">Machining Allowance Explained: Its Calculation And Matters<\/span>   <\/div><\/a><\/h3><p class=\"des\">Machining allowance is a fundamental concept in manufacturing. It is a common engineering practice in CNC precision machining, ensuring dimensional accuracy, surface quality, and the production of reliable and functional components for a range of industries, including aerospace, defense, and medical. This article attempts to answer the question: what is machining allowance? We will take a deep dive into the concept of machining allowance and discuss why machinists leave machining allowanc&#8230;<\/p><a href=\"https:\/\/www.washxing.com\/fr\/what-is-sfm-a-complete-guide-to-surface-feet-per-minute-in-machining-5\/\" class=\"product_pic postatty\" style=\"max-height:149px;\"\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\"  src=\"https:\/\/www.washxing.com\/wp-content\/themes\/smartenterprise\/images\/loadings.png\"data-src=\"https:\/\/www.washxing.com\/wp-content\/uploads\/2025\/05\/DM_20250522181511_001.jpg\" width=\"800\" height=\"400\" alt=\"Machining Allowance Explained: Its Calculation ...\" title=\"Machining Allowance Explained: Its Calculation ...\"\/><\/a><\/div><\/div><div class=\"product_post  dbms h_w\" ><div class=\"product_info\"><h3 class=\"pro_title date-title-box\"><a href=\"https:\/\/www.washxing.com\/fr\/what-is-sfm-a-complete-guide-to-surface-feet-per-minute-in-machining-6\/\"><div class=\"date-title\"><time><span>22<\/span><span>2025.05<\/span> <\/time><span class=\"tittext\">What Is SFM? A Complete Guide To Surface Feet Per Minute In Machining<\/span>   <\/div><\/a><\/h3><p class=\"des\">SFM, meaning Surface Feet per Minute in CNC machining, measures how fast a cutting tool moves across a workpiece. It is expressed in feet per minute. SFM combines the tool or workpiece diameter with the spindle speed (RPM). A larger diameter or higher RPM results in a higher SFM. Machinists use surface feet per minute to determine the best cutting speed for a material. Different materials have recommended SFM values for optimal performance. For example, 303 annealed stainless steel has an&#8230;<\/p><a href=\"https:\/\/www.washxing.com\/fr\/what-is-sfm-a-complete-guide-to-surface-feet-per-minute-in-machining-6\/\" class=\"product_pic postatty\" style=\"max-height:149px;\"\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\"  src=\"https:\/\/www.washxing.com\/wp-content\/themes\/smartenterprise\/images\/loadings.png\"data-src=\"https:\/\/www.washxing.com\/wp-content\/uploads\/2025\/05\/DM_20250522180647_001.jpg\" width=\"768\" height=\"384\" alt=\"What Is SFM? A Complete Guide To Surface Feet P...\" title=\"What Is SFM? A Complete Guide To Surface Feet P...\"\/><\/a><\/div><\/div><div class=\"product_post  dbms h_w\" ><div class=\"product_info\"><h3 class=\"pro_title date-title-box\"><a href=\"https:\/\/www.washxing.com\/fr\/what-is-sfm-a-complete-guide-to-surface-feet-per-minute-in-machining-3\/\"><div class=\"date-title\"><time><span>16<\/span><span>2025.05<\/span> <\/time><span class=\"tittext\">Types Of Milling Explained: Know All Milling Operations<\/span>   <\/div><\/a><\/h3><p class=\"des\">Milling is inarguably the backbone of the manufacturing industry, playing a direct role in high-quality production in industries including aerospace, automotive, medical, and defense. Milling operations are highly versatile and capable of handling complex geometries with precision and speed. In this article, we will discuss the fundamentals of CNC milling and explain various milling operations, helping to choose the right milling type for your applications.Milling is a machining process t&#8230;<\/p><a href=\"https:\/\/www.washxing.com\/fr\/what-is-sfm-a-complete-guide-to-surface-feet-per-minute-in-machining-3\/\" class=\"product_pic postatty\" style=\"max-height:149px;\"\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\"  src=\"https:\/\/www.washxing.com\/wp-content\/themes\/smartenterprise\/images\/loadings.png\"data-src=\"https:\/\/www.washxing.com\/wp-content\/uploads\/2025\/05\/DM_20250522182454_001.jpg\" width=\"800\" height=\"400\" alt=\"Types Of Milling Explained: Know All Milling Op...\" title=\"Types Of Milling Explained: Know All Milling Op...\"\/><\/a><\/div><\/div><div class=\"product_post  dbms h_w\" ><div class=\"product_info\"><h3 class=\"pro_title date-title-box\"><a href=\"https:\/\/www.washxing.com\/fr\/all-you-need-to-know-engineering-drawing-and-its-elements\/\"><div class=\"date-title\"><time><span>04<\/span><span>2025.06<\/span> <\/time><span class=\"tittext\">All You Need To Know Engineering Drawing And Its Elements<\/span>   <\/div><\/a><\/h3><p class=\"des\">Drawing or painting a picture is a great technique to convey one\u2019s thoughts. Within the broad concept of industrial design, engineering drawing or technical drawing is an essential skill for designers working with the production of real objects. Therefore, engineering drawing is arguably one of the fundamentals of engineering design that serves several critical purposes. It is a standard technical drawing carrying essential design information, a mode of communication between different eng&#8230;<\/p><a href=\"https:\/\/www.washxing.com\/fr\/all-you-need-to-know-engineering-drawing-and-its-elements\/\" class=\"product_pic postatty\" style=\"max-height:149px;\"\"><img loading=\"lazy\" decoding=\"async\" class=\"lazyload\"  src=\"https:\/\/www.washxing.com\/wp-content\/themes\/smartenterprise\/images\/loadings.png\"data-src=\"https:\/\/www.washxing.com\/wp-content\/uploads\/2025\/06\/DM_20250604103740_001.jpg\" width=\"800\" height=\"400\" alt=\"All You Need To Know Engineering Drawing And It...\" title=\"All You Need To Know Engineering Drawing And It...\"\/><\/a><\/div><\/div><\/div><\/div>\n<\/div><div class=\"layout_badh\"><\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":5867,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"themepark_post_bcolor":"#f5f5f5","themepark_post_width":"1022px","themepark_post_img":"","themepark_post_img_po":"left","themepark_post_img_re":false,"themepark_post_img_cover":false,"themepark_post_img_fixed":false,"themepark_post_hide_title":true,"themepark_post_main_b":"#f5f5f5","themepark_post_main_p":100,"themepark_paddingblock":true,"footnotes":""},"categories":[33,7],"tags":[],"class_list":["post-5846","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-case-studies","category-resources"],"metadata":{"themepark_post_bcolor":["#f5f5f5"],"themepark_post_width":["1022px"],"themepark_post_img_po":["left"],"themepark_post_main_b":["#f5f5f5"],"themepark_post_main_p":["100"],"themepark_auto_metas":["a:1:{s:6:\"ector0\";s:14470:\"Efficient CNC design is key to balancing functionality, cost, and production efficiency. By following these guidelines, you can avoid common design challenges, improve manufacturability, and streamline the production process. From minimizing thin walls and deep cavities to setting reasonable tolerances, each recommendation in this solution helps simplify machining while ensuring quality. Let\u2019s get to it!\r\n<h2>1. Avoid Deep Cavities and Grooves<\/h2>\r\nThe depth of cavities and grooves is typically limited by the cutting tool diameter used to machine internal corners. A good rule of thumb is to keep cavity depth within 3-4 times the tool diameter or groove depth less than 4 times the feature width.\r\n\r\n<img class=\"alignnone size-full wp-image-54849\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/depth-of-groove-optimized.jpg\" sizes=\"(max-width: 700px) 100vw, 700px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/depth-of-groove-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/depth-of-groove-300x229-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/depth-of-groove-150x114-optimized.jpg 150w\" alt=\"depth of groove\" width=\"700\" height=\"534\" \/>\r\n<h2>2. Design Larger Internal Corner Radii<\/h2>\r\nIn CNC machining, all internal cuts create rounded corners with a radius equal to half the tool diameter. However, using smaller tools increases machining time. For efficiency, we recommend the corner radius should be greater than one-third of the machining depth. Ideally, design the largest possible internal corner radii and maintain a uniform radius for all internal edges to use the same cutting tool for machining.\r\n\r\nIf large radii cannot be used due to design requirements (e.g., to fit with a square component), consider the following alternatives to avoid smaller internal corner radii.\r\n\r\n<img class=\"alignnone size-full wp-image-54850 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/rounded-corner-design-in-machining-optimized.jpg\" sizes=\"(max-width: 700px) 100vw, 700px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/rounded-corner-design-in-machining-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/rounded-corner-design-in-machining-300x133-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/rounded-corner-design-in-machining-150x67-optimized.jpg 150w\" alt=\"rounded corner design in machining\" width=\"700\" height=\"311\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/rounded-corner-design-in-machining-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/rounded-corner-design-in-machining-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/rounded-corner-design-in-machining-300x133-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/rounded-corner-design-in-machining-150x67-optimized.jpg 150w\" data-sizes=\"(max-width: 700px) 100vw, 700px\" data-ll-status=\"loaded\" \/>\r\n<h2>3. Avoid Thin Walls<\/h2>\r\nThe features of thin walls are prone to vibration during machining, especially in taller features. For metal parts, the minimum wall thickness is recommended to be 0.5-0.8 mm, while for plastic parts, it should be 1.0-1.5 mm. If walls are structural or involve tall features, increase thickness accordingly. For thin-walled designs that must be required, combining CNC machining with sheet metal riveting is a cost-effective solution.\r\n\r\nAdditionally, for sheet parts with a thickness of 6 mm or less, we recommend to be designed for standard sheet thicknesses for procurement.\r\n\r\n<img class=\"alignnone size-full wp-image-54851 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/thin-walls-in-machined-parts-optimized.jpg\" sizes=\"(max-width: 700px) 100vw, 700px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/thin-walls-in-machined-parts-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/thin-walls-in-machined-parts-300x184-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/thin-walls-in-machined-parts-150x92-optimized.jpg 150w\" alt=\"thin walls in machined parts\" width=\"700\" height=\"429\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/thin-walls-in-machined-parts-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/thin-walls-in-machined-parts-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/thin-walls-in-machined-parts-300x184-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/thin-walls-in-machined-parts-150x92-optimized.jpg 150w\" data-sizes=\"(max-width: 700px) 100vw, 700px\" data-ll-status=\"loaded\" \/>\r\n<h2>4. Avoid Deep Holes<\/h2>\r\nFor both blind and through holes, the depth should not exceed four times the diameter of holes, the minimum hole diameter is 1 mm, and standard-sized holes are preferable. Standard drill bits are efficient and precise, whereas non-standard holes require end mills, increasing costs. For blind holes, note that drill bits create a 135\u00b0 tapered angle at the bottom, whereas machined by an end mill is flat.\r\n<h2>5. Use Standard Threads<\/h2>\r\nWhen designing threads, prioritize standard sizes, the larger threads, the easier it is to process. Thread length should not exceed three times the hole diameter. For blind hole threading, leave at least half the hole diameter as the extra depth at the bottom.\r\n\r\nFor large-diameter threaded holes or studs, allow for a hole recess at the bottom of the threads to ensure that the threads can be fully tightened. Consider also using inserts such as threaded coils or copper nuts, which are more durable than bare threads, especially in materials such as aluminum or plastic, and are easy to install.\r\n<h2>6. Minimize the Number of Clamping<\/h2>\r\nTo ensure machining accuracy, minimize the number of times the part is clamped. Ideally, all machining should be completed in a single setup. If the part\u2019s structure requires machining from different orientations, multiple setups or multi-axis CNC machines may be necessary, increasing costs. For example, the left design below requires two clampings, while the right design can be completed in one.\r\n\r\n<img class=\"alignnone size-full wp-image-54852 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/optimized-cnc-design-optimized.jpg\" sizes=\"(max-width: 700px) 100vw, 700px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/optimized-cnc-design-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/optimized-cnc-design-300x133-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/optimized-cnc-design-150x66-optimized.jpg 150w\" alt=\"optimized cnc design\" width=\"700\" height=\"310\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/optimized-cnc-design-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/optimized-cnc-design-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/optimized-cnc-design-300x133-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/optimized-cnc-design-150x66-optimized.jpg 150w\" data-sizes=\"(max-width: 700px) 100vw, 700px\" data-ll-status=\"loaded\" \/>\r\n<h2>7. Avoid Non-Functional Aesthetic Features<\/h2>\r\nNon-functional aesthetic features, such as polishing, anodizing, painting, or plating, add post-processing costs. Unless necessary, avoid these designs to reduce machining time and expenses.\r\n<h2>8. Avoid Designing Small Features<\/h2>\r\nMost CNC machines have a minimum tool diameter of 2.5 mm. The smaller the diameter of the tool, the more likely it is to break, requiring slower feed rates and increased machining time. Unless required, avoid small features. At Washxing, our CNC machines can use tools with diameters as small as 0.3 mm, achieving fine corner radii as small as 0.15 mm.\r\n\r\n<img class=\"alignnone size-full wp-image-54853 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/cnc-machining-process-optimized.jpg\" sizes=\"(max-width: 700px) 100vw, 700px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/cnc-machining-process-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/cnc-machining-process-300x177-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/cnc-machining-process-150x89-optimized.jpg 150w\" alt=\"cnc machining process\" width=\"700\" height=\"414\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/cnc-machining-process-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/cnc-machining-process-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/cnc-machining-process-300x177-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/cnc-machining-process-150x89-optimized.jpg 150w\" data-sizes=\"(max-width: 700px) 100vw, 700px\" data-ll-status=\"loaded\" \/>\r\n<h2>9. Avoid Unmachinable Features<\/h2>\r\nNot all design features are feasible for CNC machining. For example, closed-end holes and U-shaped holes cannot be directly machined. Holes that are closed at both ends need to be processed as blind holes first, and then a threaded assembly in the top area of the hole to make the hole closed. In addition, U-shaped holes need to be processed by splitting parts.\r\n\r\n<img class=\"alignnone size-full wp-image-54855 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/special-holes-in-cnc-machining-optimized.jpg\" sizes=\"(max-width: 700px) 100vw, 700px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/special-holes-in-cnc-machining-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/special-holes-in-cnc-machining-300x155-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/special-holes-in-cnc-machining-150x77-optimized.jpg 150w\" alt=\"special holes in cnc machining\" width=\"700\" height=\"361\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/special-holes-in-cnc-machining-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/special-holes-in-cnc-machining-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/special-holes-in-cnc-machining-300x155-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/special-holes-in-cnc-machining-150x77-optimized.jpg 150w\" data-sizes=\"(max-width: 700px) 100vw, 700px\" data-ll-status=\"loaded\" \/>\r\n<h2>10. Avoid Small or Raised Text<\/h2>\r\nFor marking part numbers or logos, avoid complex text designs. Laser engraving or etching is often a better option. If milling text is necessary, choose recessed instead of raised fonts, with a depth no greater than 0.3 mm and appropriately sized lettering.\r\n<h2>11. Consider Undercuts<\/h2>\r\nUndercut designs, such as T-slots and dovetail grooves, require specialized T-slot cutters. Standard dovetail angles are 45\u00b0 or 60\u00b0. Ensure the T-slot width at the top is larger than the cutter diameter, typically four times the engagement depth. If the undercut is part of a through feature, side machining is possible. For circular dovetails with seals, include an entry point with a diameter matching the dovetail\u2019s maximum width.\r\n\r\n<img class=\"alignnone size-full wp-image-54854 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/t-slots-and-dovetails-optimized.jpg\" sizes=\"(max-width: 700px) 100vw, 700px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/t-slots-and-dovetails-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/t-slots-and-dovetails-300x132-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/t-slots-and-dovetails-150x66-optimized.jpg 150w\" alt=\"t-slots and dovetails\" width=\"700\" height=\"307\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/t-slots-and-dovetails-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/t-slots-and-dovetails-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/t-slots-and-dovetails-300x132-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/t-slots-and-dovetails-150x66-optimized.jpg 150w\" data-sizes=\"(max-width: 700px) 100vw, 700px\" data-ll-status=\"loaded\" \/>\r\n<h2>12. Avoid External R Angle on Part Edges<\/h2>\r\nTo prevent parts from being scratched during handling or assembly, consider chamfers or external radii. External radii require ball-end mills or custom tools for multiple passes, while a 45\u00b0 chamfer can be completed in one pass using a chamfer tool. For efficiency, prioritize 45\u00b0 chamfers on part edges.\r\n<h2>13. Set Tolerances Reasonably<\/h2>\r\nFor metal parts, unspecified dimensional tolerances typically meet ISO 2768-fH standards, while plastic parts conform to ISO 2768-mK. Overly tight tolerances increase machining difficulty and time. Only specify tight tolerances when necessary. For assembly fits, metal parts can typically achieve IT7 grade tolerances, such as H7 for holes and h7 for shafts. The smaller the tolerance grade, the greater the machining difficulty.\r\n\r\n<img class=\"alignnone size-full wp-image-54856 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/complex-CNC-machined-parts-optimized.jpg\" sizes=\"(max-width: 700px) 100vw, 700px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/complex-CNC-machined-parts-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/complex-CNC-machined-parts-300x160-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/complex-CNC-machined-parts-150x80-optimized.jpg 150w\" alt=\"complex CNC machined parts\" width=\"700\" height=\"373\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/complex-CNC-machined-parts-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/complex-CNC-machined-parts-optimized.jpg 700w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/complex-CNC-machined-parts-300x160-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2024\/12\/complex-CNC-machined-parts-150x80-optimized.jpg 150w\" data-sizes=\"(max-width: 700px) 100vw, 700px\" data-ll-status=\"loaded\" \/>\r\n\r\nBy applying these CNC machining design tips, you can enhance manufacturability, reduce costs, and improve efficiency. At Washxing, our advanced CNC machining capabilities\u00a0and expert team are ready to bring your designs to life with precision and quality. Whether you need prototypes or end-use parts, contact us today to get a free DFM for your projects!\";}"],"themepark_seo_title":[""],"themepark_seo_description":[""],"themepark_seo_keyword":[""],"_thumbnail_id":["5867"],"_autoid":["2"],"_blocktemname":["\u535a\u5ba2\u8be6\u60c5\u6a21\u677f"],"views":["3963"],"themepark_post_hide_title":["1"],"themepark_paddingblock":["1"]},"medium_url":"https:\/\/www.washxing.com\/wp-content\/uploads\/2025\/06\/DM_20250604112857_001-300x150.jpg","thumbnail_url":"https:\/\/www.washxing.com\/wp-content\/uploads\/2025\/06\/DM_20250604112857_001-150x150.jpg","full_url":"https:\/\/www.washxing.com\/wp-content\/uploads\/2025\/06\/DM_20250604112857_001.jpg","_links":{"self":[{"href":"https:\/\/www.washxing.com\/fr\/wp-json\/wp\/v2\/posts\/5846","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.washxing.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.washxing.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.washxing.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.washxing.com\/fr\/wp-json\/wp\/v2\/comments?post=5846"}],"version-history":[{"count":1,"href":"https:\/\/www.washxing.com\/fr\/wp-json\/wp\/v2\/posts\/5846\/revisions"}],"predecessor-version":[{"id":5868,"href":"https:\/\/www.washxing.com\/fr\/wp-json\/wp\/v2\/posts\/5846\/revisions\/5868"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.washxing.com\/fr\/wp-json\/wp\/v2\/media\/5867"}],"wp:attachment":[{"href":"https:\/\/www.washxing.com\/fr\/wp-json\/wp\/v2\/media?parent=5846"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.washxing.com\/fr\/wp-json\/wp\/v2\/categories?post=5846"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.washxing.com\/fr\/wp-json\/wp\/v2\/tags?post=5846"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}