{"id":5843,"date":"2025-06-04T11:44:29","date_gmt":"2025-06-04T03:44:29","guid":{"rendered":"http:\/\/www.washxing.com\/?p=5843"},"modified":"2025-06-18T14:04:55","modified_gmt":"2025-06-18T06:04:55","slug":"causes-and-solutions-for-tool-marks-in-machining-metal","status":"publish","type":"post","link":"https:\/\/www.washxing.com\/ru\/causes-and-solutions-for-tool-marks-in-machining-metal\/","title":{"rendered":"\u041f\u0440\u0438\u0447\u0438\u043d\u044b \u0438 \u0441\u043f\u043e\u0441\u043e\u0431\u044b \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0441\u043b\u0435\u0434\u043e\u0432 \u043e\u0442 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u043c\u0435\u0442\u0430\u043b\u043b\u0430"},"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;\"> \u041f\u0440\u0438\u0447\u0438\u043d\u044b \u0438 \u0441\u043f\u043e\u0441\u043e\u0431\u044b \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0441\u043b\u0435\u0434\u043e\u0432 \u043e\u0442 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u043c\u0435\u0442\u0430\u043b\u043b\u0430 <\/h1><\/div><div class=\"description\"style=\"background-color:#ffffff;\"><time style=\"color:#dd9933;\"><i class=\"fa fa-calendar\"><\/i>4 \u0438\u044e\u043d\u044f, 2025<\/time><span style=\"color:#dd9933;\"><i class=\"fa fa-folder\"><\/i><a style=\"color:#dd9933;\" href=\"https:\/\/www.washxing.com\/ru\/category\/\u0440\u0435\u0441\u0443\u0440\u0441\u044b\/case-studies\/\">\u0422\u0435\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u044f<\/a> <a style=\"color:#dd9933;\" href=\"https:\/\/www.washxing.com\/ru\/category\/\u0440\u0435\u0441\u0443\u0440\u0441\u044b\/\">\u0420\u0435\u0441\u0443\u0440\u0441\u044b<\/a> <\/span> <span style=\"color:#dd9933;\"><i class=\"fa fa-eye\"><\/i>3850<\/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>Precision metal parts are often manufactured using various precision machining technologies, with CNC machining being a common method. Usually, precision parts typically demand high standards for both dimensions and appearance.<\/p>\n<p>Therefore, when using CNC machining metals such as aluminum and copper, the occurrence of tool marks and lines on the finished product\u2019s surface is a concern. This article discusses the reasons that cause tool marks and lines during the machining of metal products. We also propose potential solutions.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-36878\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-mark-in-machining-optimized.jpg\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-mark-in-machining-optimized.jpg 800w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-mark-in-machining-300x139-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-mark-in-machining-150x69-optimized.jpg 150w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-mark-in-machining-768x355-optimized.jpg 768w\" alt=\"tool mark in machining\" width=\"800\" height=\"370\" \/><\/p>\n<h2>Insufficient Clamping Force of Fixtures<\/h2>\n<p><strong>Causes<\/strong>: Some cavity metal products need to use vacuum fixtures, and may struggle to generate sufficient suction due to the presence of surface irregularities, resulting in tool marks or lines.<\/p>\n<p><strong>Solution<\/strong>: To mitigate this, consider transitioning from simple vacuum suction to vacuum suction combined with pressure or lateral support. Alternatively, explore alternative fixture options based on specific part structures, tailoring the solution to the particular problem.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-36877 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-optimized.jpg\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-optimized.jpg 800w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-300x138-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-150x69-optimized.jpg 150w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-768x353-optimized.jpg 768w\" alt=\"tool cutting surface\" width=\"800\" height=\"368\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-optimized.jpg 800w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-300x138-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-150x69-optimized.jpg 150w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-768x353-optimized.jpg 768w\" data-sizes=\"(max-width: 800px) 100vw, 800px\" data-ll-status=\"loaded\" \/><\/p>\n<h2>Process-related Factors<\/h2>\n<p><strong>Causes<\/strong>: Certain product manufacturing processes may contribute to the issue. For instance, products like tablet PC rear shells undergo a sequence of machining steps involving punching side holes followed by CNC milling of the edges. This sequence can lead to noticeable tool marks when milling reaches the side-hole positions.<\/p>\n<p><strong>Solution<\/strong>: A common instance of this problem occurs when the aluminum alloy is chosen for electronic product shells. To resolve it, the process can be modified by replacing the side hole punching plus milling with only CNC milling. At the same time, ensuring consistent tool engagement and reducing uneven cutting when milling.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-36879 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-optimized.jpg\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-optimized.jpg 800w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-300x157-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-150x79-optimized.jpg 150w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-768x402-optimized.jpg 768w\" alt=\"cutting tool path\" width=\"800\" height=\"419\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-optimized.jpg 800w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-300x157-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-150x79-optimized.jpg 150w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-768x402-optimized.jpg 768w\" data-sizes=\"(max-width: 800px) 100vw, 800px\" data-ll-status=\"loaded\" \/><\/p>\n<h2>Inadequate Programming of Tool Path Engagement<\/h2>\n<p><strong>Causes<\/strong>: This issue commonly arises during the 2D contour machining phase of product production. Poorly designed tool path engagement in the CNC program, leaving traces at the entry and exit points of the tool.<\/p>\n<p><strong>Solution<\/strong>: To address the challenge of avoiding tool marks at entry and exit points, a typical approach involves introducing a slight overlap in tool engagement distance (approximately 0.2mm). This technique serves to circumvent potential inaccuracies in the machine\u2019s lead screw precision.<\/p>\n<p>While this strategy effectively prevents the formation of tool marks, it causes an element of repetitive machining when the material of the product is a soft metal. Consequently, this section may exhibit variations in texture and color compared to other areas.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-36880 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-optimized.jpg\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-optimized.jpg 800w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-300x149-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-150x74-optimized.jpg 150w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-768x380-optimized.jpg 768w\" alt=\"optimized toolpath\" width=\"800\" height=\"396\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-optimized.jpg 800w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-300x149-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-150x74-optimized.jpg 150w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-768x380-optimized.jpg 768w\" data-sizes=\"(max-width: 800px) 100vw, 800px\" data-ll-status=\"loaded\" \/><\/p>\n<h2>Fish Scale Patterns on Flat Machined Surfaces<\/h2>\n<p><strong>Causes<\/strong>: Fish scale or circular patterns appearing on the product\u2019s flat surfaces. The cutting tools used for processing soft metals such as aluminum\/copper are generally alloy material mills with 3 to 4 flutes. They have a hardness ranging from HRC55 to HRC65. These milling cutting tools are performed using the bottom edge of the tool, and the part surface may develop distinctive fish scale patterns, impacting its overall appearance.<\/p>\n<p><strong>Solution<\/strong>: Commonly observed in products with high flatness requirements and flat surfaces featuring recessed structures. A remedy is to switch to cutting tools made from synthetic diamond material, which helps achieve smoother surface finishes.<\/p>\n<h2>Aging and Wear of Equipment Components<\/h2>\n<p><strong>Causes<\/strong>: The tools mark on the product surface is attributed to the aging and wear of the equipment\u2019s spindle, bearings, and lead screw. Additionally, inadequate CNC system backlash parameters contribute to pronounced tool marks, particularly when machining rounded corners.<\/p>\n<p><strong>Solution<\/strong>: These issues stem from equipment-related factors and can be addressed by targeted maintenance and replacement.<\/p>\n<h2>Conclusion<\/h2>\n<p>Achieving an ideal surface in the \u00a0CNC machining metals\u00a0demands useful approaches. There are different methods to avoid tool marks and lines that involve a combination of equipment maintenance, fixture enhancements, process adjustments, and programming refinements. By understanding and rectifying these factors, manufacturers can ensure that precision components not only meet dimensional criteria but also exhibit the desired aesthetic qualities.<\/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\">\u0420\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 <\/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\/ru\/cnc-machining-design-for-manufacturing-expert-technical-guide\/\"><div class=\"date-title\"><time><span>04<\/span><span>2025.06<\/span> <\/time><span class=\"tittext\">CNC Machining Design for Manufacturing: \u0422\u0435\u0445\u043d\u0438\u0447\u0435\u0441\u043a\u043e\u0435 \u0440\u0443\u043a\u043e\u0432\u043e\u0434\u0441\u0442\u0432\u043e \u0434\u043b\u044f \u044d\u043a\u0441\u043f\u0435\u0440\u0442\u043e\u0432<\/span>   <\/div><\/a><\/h3><p class=\"des\">\u042d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u0430\u044f \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044f \u0427\u041f\u0423 - \u044d\u0442\u043e \u043a\u043b\u044e\u0447 \u043a \u0431\u0430\u043b\u0430\u043d\u0441\u0443 \u043c\u0435\u0436\u0434\u0443 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c\u044e, \u0441\u0442\u043e\u0438\u043c\u043e\u0441\u0442\u044c\u044e \u0438 \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u043e\u0441\u0442\u044c\u044e \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u0430. \u0421\u043b\u0435\u0434\u0443\u044f \u044d\u0442\u0438\u043c \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u044f\u043c, \u0432\u044b \u0441\u043c\u043e\u0436\u0435\u0442\u0435 \u0438\u0437\u0431\u0435\u0436\u0430\u0442\u044c \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043d\u044b\u0445 \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u043f\u0440\u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0438, \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0447\u043d\u043e\u0441\u0442\u044c \u0438 \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441. \u041e\u0442 \u043c\u0438\u043d\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u0438 \u0442\u043e\u043d\u043a\u0438\u0445 \u0441\u0442\u0435\u043d\u043e\u043a \u0438 \u0433\u043b\u0443\u0431\u043e\u043a\u0438\u0445 \u043f\u043e\u043b\u043e\u0441\u0442\u0435\u0439 \u0434\u043e \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0440\u0430\u0437\u0443\u043c\u043d\u044b\u0445 \u0434\u043e\u043f\u0443\u0441\u043a\u043e\u0432 - \u043a\u0430\u0436\u0434\u0430\u044f \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u044f \u0432 \u044d\u0442\u043e\u043c \u0440\u0435\u0448\u0435\u043d\u0438\u0438 \u043f\u043e\u043c\u043e\u0433\u0430\u0435\u0442 \u0443\u043f\u0440\u043e\u0441\u0442\u0438\u0442\u044c \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0443, \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044f \u043f\u0440\u0438 \u044d\u0442\u043e\u043c \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u043e. \u041f\u0440\u0438\u0441\u0442\u0443\u043f\u0438\u043c! \u0413\u043b\u0443\u0431\u0438\u043d\u0430 \u043f\u043e\u043b\u043e\u0441\u0442\u0435\u0439 \u0438 \u043a\u0430\u043d\u0430\u0432\u043e\u043a \u043e\u0431\u044b\u0447\u043d\u043e \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0434\u0438\u0430\u043c\u0435\u0442\u0440\u043e\u043c \u0440\u0435\u0436\u0443\u0449\u0435\u0433\u043e \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430...<\/p><a href=\"https:\/\/www.washxing.com\/ru\/cnc-machining-design-for-manufacturing-expert-technical-guide\/\" 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_20250604112857_001.jpg\" width=\"800\" height=\"400\" alt=\"\u041f\u0440\u043e\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0441 \u0427\u041f\u0423 \u0434\u043b\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u0430: \u042d\u043a\u0441\u043f\u0435\u0440\u0442 ...\" title=\"\u041f\u0440\u043e\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0441 \u0427\u041f\u0423 \u0434\u043b\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u0430: \u042d\u043a\u0441\u043f\u0435\u0440\u0442 ...\"\/><\/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\/ru\/what-is-sfm-a-complete-guide-to-surface-feet-per-minute-in-machining-2\/\"><div class=\"date-title\"><time><span>16<\/span><span>2025.05<\/span> <\/time><span class=\"tittext\">Press Fit Tolerance: Defination, Practices, And Calculation<\/span>   <\/div><\/a><\/h3><p class=\"des\">The manufacturing industry is highly precision-centric, where even the slightest of margins can create huge differences in product quality, cost, and utility. This article discusses the topic of press fitting, where a few micrometers of deviation dictates the criterion for part failure. So, what is press fit and, the factors influencing press fit tolerancing, and present an example of a press fit calculator. We will also share some key tips to keep in mind while designing components for p&#8230;<\/p><a href=\"https:\/\/www.washxing.com\/ru\/what-is-sfm-a-complete-guide-to-surface-feet-per-minute-in-machining-2\/\" 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_20250522183245_001.jpg\" width=\"800\" height=\"400\" alt=\"Press Fit Tolerance: Defination, Practices, And...\" title=\"Press Fit Tolerance: Defination, Practices, And...\"\/><\/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\/ru\/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\/ru\/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\/ru\/what-is-sfm-a-complete-guide-to-surface-feet-per-minute-in-machining\/\"><div class=\"date-title\"><time><span>16<\/span><span>2025.05<\/span> <\/time><span class=\"tittext\">Press Fit Tolerance: Defination, Practices, And Calculation<\/span>   <\/div><\/a><\/h3><p class=\"des\">The manufacturing industry is highly precision-centric, where even the slightest of margins can create huge differences in product quality, cost, and utility. This article discusses the topic of press fitting, where a few micrometers of deviation dictates the criterion for part failure. So, what is press fit and, the factors influencing press fit tolerancing, and present an example of a press fit calculator. We will also share some key tips to keep in mind while designing components for p&#8230;<\/p><a href=\"https:\/\/www.washxing.com\/ru\/what-is-sfm-a-complete-guide-to-surface-feet-per-minute-in-machining\/\" 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\/IMG_9307-1024x683.jpg\" width=\"1024\" height=\"683\" alt=\"Press Fit Tolerance: Defination, Practices, And...\" title=\"Press Fit Tolerance: Defination, Practices, And...\"\/><\/a><\/div><\/div><\/div><\/div>\n<\/div><div class=\"layout_badh\"><\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":5877,"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-5843","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:8626:\"Precision metal parts are often manufactured using various precision machining technologies, with CNC machining being a common method. Usually, precision parts typically demand high standards for both dimensions and appearance.\r\n\r\nTherefore, when using CNC machining metals such as aluminum and copper, the occurrence of tool marks and lines on the finished product\u2019s surface is a concern. This article discusses the reasons that cause tool marks and lines during the machining of metal products. We also propose potential solutions.\r\n\r\n<img class=\"alignnone size-full wp-image-36878\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-mark-in-machining-optimized.jpg\" sizes=\"(max-width: 800px) 100vw, 800px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-mark-in-machining-optimized.jpg 800w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-mark-in-machining-300x139-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-mark-in-machining-150x69-optimized.jpg 150w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-mark-in-machining-768x355-optimized.jpg 768w\" alt=\"tool mark in machining\" width=\"800\" height=\"370\" \/>\r\n<h2>Insufficient Clamping Force of Fixtures<\/h2>\r\n<strong>Causes<\/strong>: Some cavity metal products need to use vacuum fixtures, and may struggle to generate sufficient suction due to the presence of surface irregularities, resulting in tool marks or lines.\r\n\r\n<strong>Solution<\/strong>: To mitigate this, consider transitioning from simple vacuum suction to vacuum suction combined with pressure or lateral support. Alternatively, explore alternative fixture options based on specific part structures, tailoring the solution to the particular problem.\r\n\r\n<img class=\"alignnone size-full wp-image-36877 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-optimized.jpg\" sizes=\"(max-width: 800px) 100vw, 800px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-optimized.jpg 800w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-300x138-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-150x69-optimized.jpg 150w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-768x353-optimized.jpg 768w\" alt=\"tool cutting surface\" width=\"800\" height=\"368\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-optimized.jpg 800w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-300x138-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-150x69-optimized.jpg 150w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/tool-cutting-surface-768x353-optimized.jpg 768w\" data-sizes=\"(max-width: 800px) 100vw, 800px\" data-ll-status=\"loaded\" \/>\r\n<h2>Process-related Factors<\/h2>\r\n<strong>Causes<\/strong>: Certain product manufacturing processes may contribute to the issue. For instance, products like tablet PC rear shells undergo a sequence of machining steps involving punching side holes followed by CNC milling of the edges. This sequence can lead to noticeable tool marks when milling reaches the side-hole positions.\r\n\r\n<strong>Solution<\/strong>: A common instance of this problem occurs when the aluminum alloy is chosen for electronic product shells. To resolve it, the process can be modified by replacing the side hole punching plus milling with only CNC milling. At the same time, ensuring consistent tool engagement and reducing uneven cutting when milling.\r\n\r\n<img class=\"alignnone size-full wp-image-36879 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-optimized.jpg\" sizes=\"(max-width: 800px) 100vw, 800px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-optimized.jpg 800w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-300x157-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-150x79-optimized.jpg 150w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-768x402-optimized.jpg 768w\" alt=\"cutting tool path\" width=\"800\" height=\"419\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-optimized.jpg 800w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-300x157-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-150x79-optimized.jpg 150w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/cutting-tool-path-768x402-optimized.jpg 768w\" data-sizes=\"(max-width: 800px) 100vw, 800px\" data-ll-status=\"loaded\" \/>\r\n<h2>Inadequate Programming of Tool Path Engagement<\/h2>\r\n<strong>Causes<\/strong>: This issue commonly arises during the 2D contour machining phase of product production. Poorly designed tool path engagement in the CNC program, leaving traces at the entry and exit points of the tool.\r\n\r\n<strong>Solution<\/strong>: To address the challenge of avoiding tool marks at entry and exit points, a typical approach involves introducing a slight overlap in tool engagement distance (approximately 0.2mm). This technique serves to circumvent potential inaccuracies in the machine\u2019s lead screw precision.\r\n\r\nWhile this strategy effectively prevents the formation of tool marks, it causes an element of repetitive machining when the material of the product is a soft metal. Consequently, this section may exhibit variations in texture and color compared to other areas.\r\n\r\n<img class=\"alignnone size-full wp-image-36880 perfmatters-lazy entered pmloaded\" src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-optimized.jpg\" sizes=\"(max-width: 800px) 100vw, 800px\" srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-optimized.jpg 800w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-300x149-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-150x74-optimized.jpg 150w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-768x380-optimized.jpg 768w\" alt=\"optimized toolpath\" width=\"800\" height=\"396\" data-src=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-optimized.jpg\" data-srcset=\"https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-optimized.jpg 800w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-300x149-optimized.jpg 300w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-150x74-optimized.jpg 150w, https:\/\/waykenrm.com\/wp-content\/uploads\/2023\/08\/optimized-toolpath-768x380-optimized.jpg 768w\" data-sizes=\"(max-width: 800px) 100vw, 800px\" data-ll-status=\"loaded\" \/>\r\n<h2>Fish Scale Patterns on Flat Machined Surfaces<\/h2>\r\n<strong>Causes<\/strong>: Fish scale or circular patterns appearing on the product\u2019s flat surfaces. The cutting tools used for processing soft metals such as aluminum\/copper are generally alloy material mills with 3 to 4 flutes. They have a hardness ranging from HRC55 to HRC65. These milling cutting tools are performed using the bottom edge of the tool, and the part surface may develop distinctive fish scale patterns, impacting its overall appearance.\r\n\r\n<strong>Solution<\/strong>: Commonly observed in products with high flatness requirements and flat surfaces featuring recessed structures. A remedy is to switch to cutting tools made from synthetic diamond material, which helps achieve smoother surface finishes.\r\n<h2>Aging and Wear of Equipment Components<\/h2>\r\n<strong>Causes<\/strong>: The tools mark on the product surface is attributed to the aging and wear of the equipment\u2019s spindle, bearings, and lead screw. Additionally, inadequate CNC system backlash parameters contribute to pronounced tool marks, particularly when machining rounded corners.\r\n\r\n<strong>Solution<\/strong>: These issues stem from equipment-related factors and can be addressed by targeted maintenance and replacement.\r\n<h2>Conclusion<\/h2>\r\nAchieving an ideal surface in the \u00a0CNC machining metals\u00a0demands useful approaches. There are different methods to avoid tool marks and lines that involve a combination of equipment maintenance, fixture enhancements, process adjustments, and programming refinements. By understanding and rectifying these factors, manufacturers can ensure that precision components not only meet dimensional criteria but also exhibit the desired aesthetic qualities.\";}"],"themepark_seo_title":[""],"themepark_seo_description":[""],"themepark_seo_keyword":[""],"_thumbnail_id":["5877"],"_autoid":["2"],"_blocktemname":["\u535a\u5ba2\u8be6\u60c5\u6a21\u677f"],"views":["3850"],"themepark_post_hide_title":["1"],"themepark_paddingblock":["1"],"_trp_automatically_translated_slug_pt_PT":["causas-e-solucoes-para-as-marcas-de-ferramentas-na-maquinagem-de-metais"]},"medium_url":"https:\/\/www.washxing.com\/wp-content\/uploads\/2025\/06\/DM_20250604114300_001-300x150.jpg","thumbnail_url":"https:\/\/www.washxing.com\/wp-content\/uploads\/2025\/06\/DM_20250604114300_001-150x150.jpg","full_url":"https:\/\/www.washxing.com\/wp-content\/uploads\/2025\/06\/DM_20250604114300_001.jpg","_links":{"self":[{"href":"https:\/\/www.washxing.com\/ru\/wp-json\/wp\/v2\/posts\/5843","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.washxing.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.washxing.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.washxing.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.washxing.com\/ru\/wp-json\/wp\/v2\/comments?post=5843"}],"version-history":[{"count":1,"href":"https:\/\/www.washxing.com\/ru\/wp-json\/wp\/v2\/posts\/5843\/revisions"}],"predecessor-version":[{"id":5878,"href":"https:\/\/www.washxing.com\/ru\/wp-json\/wp\/v2\/posts\/5843\/revisions\/5878"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.washxing.com\/ru\/wp-json\/wp\/v2\/media\/5877"}],"wp:attachment":[{"href":"https:\/\/www.washxing.com\/ru\/wp-json\/wp\/v2\/media?parent=5843"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.washxing.com\/ru\/wp-json\/wp\/v2\/categories?post=5843"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.washxing.com\/ru\/wp-json\/wp\/v2\/tags?post=5843"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}