Vertical machining centers v1165 The machining center with the spindle axis perpendicular to the worktable refers to the machining center, which can be used to process complex parts such as plates, plates, molds and small shells. However, the batch processing of the vertical machining center can find the consistency of the workpiece size. This is relatively difficult for manual operation. Even if a certain error value is allowed, assuming that the reference data is set incorrectly or the operation error will indirectly affect the poor processing accuracy of the workpiece. So what are the reasons for the poor accuracy of vertical machining centers? Let's briefly understand:
1. Excessive cutting speed, improper cutting fluid, excessive wear of the reamer, too large lead angle of the reamer or too large margin will cause the high roughness of the vertical machining center.
Because there are many reasons for the high roughness, it is more difficult to solve it. The cutting speed can be reduced. The cutting fluid can be selected by referring to the processing material, reducing the reaming allowance and increasing the accuracy and quality of the bottom hole before reaming, and increasing the reaming allowance. Measures such as increasing the space of the chip pocket or adopting a reamer with an inclination of the edge to make chip removal smooth, and regularly replacing the reamer and choosing a reasonable tool.
2. Because the guide sleeve of the vertical machining center is worn or the low end of the guide sleeve is too far away from the workpiece, the length of the guide sleeve is short or the accuracy is poor, etc., which cause the position of the reamed hole to be poor.
The guide sleeve can be regularly checked and replaced, the guide sleeve can be lengthened, the coordination accuracy between the guide sleeve and the reamer gap can be strengthened, and the spindle bearing gap can be adjusted in time.
3. Loose spindle bearings, blisters or air holes on the surface of the hole, or too long a reamer that cannot achieve rigidity, will cause the inner hole reamed by the vertical machining center to be out of round.
The reamer can be installed by rigid connection, select qualified reamer, control the hole position tolerance of the pre-processing process, use unequal pitch reamer, select qualified blanks, and regularly adjust the spindle gap to solve the problem.
4. The cutting speed of the vertical machining center is too high, the feed amount is improper, or the machining allowance is too large, or the vertical machining center itself causes the aperture to gradually increase.
It can be dealt with according to the actual situation. Appropriately reducing the outer diameter of the reamer, reducing the cutting speed, reducing the entering angle, choosing a cutting fluid with better cooling performance, adjusting or replacing the spindle bearing or replacing the entire spindle can effectively solve the hole diameter. Increase the problem.
