Шэньчжэнь Washxing Technology Co.
Как определить центр вращения при работе на 4-осевом станке с ЧПУ?
Nowadays, a four-axis rotary table is a common piece of equipment in the machine shop. In order to complete the machining of multiple faces in one coordinate, the programming coordinates must be synchronized with the coordinates of the rotary table. In this article, we will share a method to determine the rotation center of a 4-axis rotary table.
Steps to Determine Center Rotation of a 4-Axis Rotary Table
Here, we show a 4-axis rotary table that rotates around the X-axis of a machine tool, where the axis of rotation is called the A-axis. In a word, all we need to do is to determine the Y/Z coordinates of the center of rotation on the 4-axis machine.
In addition, the X coordinate values are determined by the placement of the product, so we won’t go into detail here. The following are the specific steps to determine the center of rotation.
Step 1: Calibrate the Fixture Reference Plane
Firstly, use the calibration table to calibrate the fixture datum plane (the yellow surface). Then, set the calibrated datum plane to the 0 degree position of the A-axis.
Step 2: Set the Fixture Datum Plane
After setting the datum plane, we need to rotate the A-axis 90 degrees positive. Then, use a centering bar to measure the machine position where the datum plane is located. In the relative coordinate setting, set the Y coordinate to “0”.
Step 3: Measure the Value of the Datum Plane
Next, rotate the A-axis 180 degrees in the negative direction. Same as the last step, we need to measure the machine position on the other side of the datum using the centering bar. Then, check the current relative Y value of the machine. For example, if we assume the Y value is “92mm”, the centering diameter is 10mm centering diameter, and the fixture datum to the rotary table is 41mm.
Step 4: Determine the Position of the Rotation Center in the Y-axis
Referring to the values in the previous step, we can calculate that 92/2 = 46mm, so half of the Y value of 46mm. Then, we move the centering bar 46mm negatively towards the Y-axis.
As shown by the picture, the centering bar is now just aligned with the rotational axis of the rotary table. At the time, the position of the alignment point is the zero point of the Y value of the machine. In this way, we have completed half of the operation work.
Step 5: Find the Position of the Rotation Center in the Z-axis
Finding the Z value is relatively simple. After the rotary table returns to the A0 position, the zero point of the Z-axis of the rotary axis can be determined by moving down 41mm with the datum surface as the calculation base. This value is calculated using the formula “(92-10)/2”, where 92 is the Y-value found earlier and 10 is the diameter of the centering bar. By applying this formula, the Z value is determined.
Finally, the intersection of the Z and Y axis is the rotation center around the X axis. With these steps, we can determine the rotation center of the 4-axis rotary table.
Coordinate Setting in Programming
After determining the center value, in the programming software, we need to synchronize the program coordinates with the rotation axis of the 4-axis rotary table (relative distance of the coordinates to the fixture datum). Then we can output the program for all machined surfaces. So, the machining of multiple faces of a part can be completed by one coordinate.
Conclusion
By determining the rotation center of the 4-axis rotary table, we can complete the machining of multiple surfaces or four-axis simultaneous machining in a single clamping process with one coordinate. It also avoids the trouble of setting the machining coordinates for each machined surface during multi-face machining. In this way, we can ensure relative accuracy between the machined surfaces.
Рекомендации
Как предотвратить коробление и деформацию крупных и тонкостенных корпусных деталей при обработке с ЧПУ?
Крупные тонкостенные корпусные детали легко деформируются и искривляются в процессе обработки. В этой статье мы рассмотрим случай теплоотвода с большими и тонкостенными деталями, чтобы обсудить проблемы, возникающие в процессе обычной обработки. Кроме того, мы предложим оптимизированный процесс и решение для приспособлений. Приступим к делу! Речь идет о корпусной детали из материала AL6061-T6. Вот ее точные размеры. Габаритные размеры: 455*261.5*12.5 ммТолщина опорной стенки: 2.5 ммТолщина радиатора: 1.5 ммТолщина...
Производство и изготовление мостов: Основные этапы и преимущества
Внедрение окончательного производственного процесса часто сопряжено с многочисленными испытаниями и неудачами, особенно при создании прототипов или малосерийном производстве. Компании могут временно выбрать тот или иной метод производства, пока не будут уверены в своем подходе. Мостовое производство относится к этой временной стратегии, позволяющей продолжать работу, пока разрабатывается более надежный производственный процесс. Понимание мостового производства имеет решающее значение для совершенствования разработки продукции и ускорения операций. В этой статье...
Press Fit Tolerance: Defination, Practices, and Calculation
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...
All You Need To Know Engineering Drawing And Its Elements
Drawing or painting a picture is a great technique to convey one’s 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...
