XZC three-axis linkage thread milling method for milling machining center

Abstract

The invention relates to an XZC three-axis linkage thread milling method for a milling machining center, which is mainly used for solving the problems of another anchoring, positioning and the like brought by secondary machining in the floor type boring and milling procedure when large diameter thread holes of the reference circle of a large rotational part are machined. The method comprises the following steps of: anchoring the large rotational part after the center of the large rotational part is adjusted to be consistent with the rotational center of a workbench of the milling machining center; installing a thread milling cutter with a power head to make X-axis and Z-axis linear movement by respectively using corresponding points of the surface of a workpiece as starting points according to the position and the size of thread holes on the drawing; driving the workpiece to make C-axis rotational swing angle movement by the workbench, performing interpolated linkage milling through the cooperation of XZC three axes to from spiral linear movement trails, and machining out each large diameter thread hole in the rotational part workpiece. The purpose for completing all machining procedures including large diameter thread hole milling in the reference circle of the large rotational part workpiece on one milling machining center is basically realized. Moreover, the invention has the advantages of high machining accuracy, low manufacturing cost and high production efficiency.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and relates to a process method for milling threaded holes on the indexing circle of a large rotary part on a large vertical and horizontal turning and milling machining center. Background technique [0002] At present, when processing large-scale rotary parts on the turning-milling machining center, the machining of small-diameter threaded holes (below M24) on the end face indexing circle usually involves the rotation of the C-axis of the worktable at a corresponding angle, and the X-axis moves quickly to the position at the same time. The Z-axis feed of the head can be directly drilled and tapped. However, when processing large-diameter threaded holes (above M24) on the indexing circle, due to the power limitation of the power head, the torque of the accessory spindle is not large enough, and it is difficult to directly drill and tap holes according to conventional methods It is usually co...

AI Technical Summary

Problems solved by technology

However, when processing large-diameter threaded holes (above M24) on the indexing circle, due to the power limitation of the power head, the torque of the accessory spindle is not large enough, and it is difficult to directly drill and tap holes according to conventional methods It is usually completed by transferring the workpiece to other machine tools - CNC boring and milling machine tools for the next process.

The multi-sequence machining of changing the machine tool not only prolongs the production cycle, but also involves the secondary clamping, alignment and positioning of the workpiece, which increases the repeated positioning error of the screw hole position

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