Precautions for aligning parts in a twin-spindle machining center
1. When you slide the workpiece to the table, you need to pay attention to the verticality: slide one side flat, then slide the vertical side.
2. When the part is divided, it should be divided into two parts for checking.
3. Once the number of strokes is determined, the center position should be checked based on the overall dimensions provided in the program sheet and the dimensions on the parts drawing.
4. All parts must be centered using the centering method. The zero position on the side of the part must also be centered using the centering method and then moved to the side. You must ensure that the margins on both sides are consistent*. If it is necessary to take the number unilaterally in special circumstances, it must be confirmed again by the production team before it can be transmitted. After counting on one side, remember to compensate for the radius of the centering rod.
5. The workpiece center zero position input must be the same as the three-axis center of the workstation computer diagram.
6. When using a dial indicator to find the program origin, it is suitable for parts with rotating geometry. Use the dial indicator to align the spindle axis and the workpiece axis so that they are coaxial.
7. When using an edge finder to calibrate the origin of the program, when the geometric shape of the workpiece is a rectangle or a rotating body, a centrifugal edge finder is generally used to calibrate the origin of the program.
8. When aligning Z coordinates, a tool setting block is often used to measure the Z coordinate value of the tool. Care should be taken during the alignment process to prevent the tool from colliding with the tool setting block.
9. When calibrating XY coordinates, you can use a dial indicator and edge finder to calibrate the program origin of the XY plane. Usage scenarios vary.
10. When using the lever dial indicator method for secondary clamping and alignment, attach the dial indicator to the spindle of the CNC machining center, hold the dial indicator in an almost horizontal position, and then lower the dial indicator dial in the desired position. corrected The fine reference plane is moved through the pulse handwheel of the CNC system, and the spindle rotates by hand at the same time, so that the dial indicator presses the fine reference plane and displays the maximum value for adjust the part. At the same time, the relative coordinate values in the relevant directions of the CNC system of the CNC machining center are cleared. Use the handwheel to move the dial indicator to the other side of the room and lower the dial indicator to the fine reference plane. Make sure the maximum reading on the dial indicator pressure gauge is exactly the same as the previous reading on the part.
11. When using the spacer method for secondary clamping and alignment, it is necessary to use auxiliary tools such as standard spacers to translate the accurate reference plane of the workpiece. Place a standard pad between the tool setter and the workpiece, install a photoelectric edge finder on the spindle of the CNC machining center, rotate the spindle at low speed, the photoelectric edge finder directly touches the pads left and right, and the second difference is the error value. The part can be adjusted according to this difference. However, due to the gap between the pad and the workpiece, this method is not as accurate as using a lever dial indicator.
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