Common problems in vertical CNC machining centers

Vertical machining centers often have various problems in actual processing and production. In order to improve the processing efficiency and ensure the processing quality, Xiaobian has summarized the common problems of the vertical machining center and gave effective improvement methods to facilitate the more accurate debugging of cutting speed, feed rate and cutting depth. Frequently Asked Questions 1: Overcutting the workpiece The external reason for the overcutting of the workpiece is often that the tool strength is not enough or the size is not suitable. The internal reason may be that the operation is not standardized, the cutting parameters are set improperly, the cutting allowance is not evenly set, and the tolerance is too large, resulting in the workpiece. Overcutting produces machining errors. To solve this problem, when adding the clear angle program, the remaining amount should be kept as uniform as possible, the tool should be used as much as possible, and the SF function micro-scheduling of the vertical machining center can gradually achieve the best cutting. Frequently Asked Questions 2: Uncertain points The sub-center is the step of the machining center to determine the origin. It can be said that any operation using the machining center is inseparable from the sub-step. In addition to the operator’s manual operation is not accurate, there are burrs around the mold, four sides are not vertical, and the magnetic rods in the middle of the rod will cause inaccuracies. Before the machining center is divided into the mold, the decoupling treatment should be carried out first; the manual operation in the sub-center should be repeated and checked, and the points should be kept at the same height as much as possible; the calibration is often performed to check whether the four sides of the mold are vertical. Frequently Asked Questions 3: Collision There is a saying in the workshop of the machining center that good technology is hit by a collision machine. Although the collision is now inevitable, a qualified operator as a machining center should have the ability to avoid avoidable collision factors. The phenomenon of collision is various, and it is necessary to control in advance for factors that can be avoided. The avoidable collision factor includes insufficient safety height setting; the tool length and actual machining depth on the cnc program list are incorrect, the depth Z axis acquisition number and the actual Z axis acquisition number are wrong; the coordinate setting during programming is wrong. Therefore, the height of the workpiece should be accurately measured to ensure that the safe height of the vertical machining center is above the workpiece; the tool on the CNC program sheet should be consistent with the actual program tool, and the program should be used to export the program list; Carefully measure the depth and write the length and length of the tool on the program sheet. The actual Z-axis fetch is to be clearly written on the program sheet. This operation is repeated for manual operation, and the confirmation is correct. The emergence of vertical machining centers has brought the numerical control processing efficiency of the processing workshop to a new stage. The use of vertical machining centers requires further active learning and diligent exploration.