Boring, milling and grinding composite machining tool

Abstract

The invention discloses a boring, milling and grinding composite machining tool which comprises a power spindle head device. The power spindle head device is characterized by comprising a high-speed electric spindle, an electric spindle sealing end cover, a YRT bearing, a mechanical spindle, a front end bearing set, a spindle box, an adjusting rotor shaft, a bearing pretightening sleeve, a rotor shaft rear supporting bearing, a circular grating ruler, a grating ruler reading head support, a turbine, a grating reading head, a lead bearing, a mechanical main shaft bearing locking nut, synchronous belt transmission teeth, an electric spindle power and signal line, a grating ruler signal line, a positioning pin, a bearing set, a bearing adjusting end cover sleeve cup, a worm shaft, a coupler,a motor connection flange, an adjusting sleeve cup and a servo motor. According to the boring, milling and grinding composite machining tool, various kinds of composite machining can be achieved, theoverall size of a composite spindle is reduced through effective design, the structure is more compact and reasonable, and meanwhile the advantage of high rigidity in the radial direction and the axial direction of a composite spindle system is kept.

Description

technical field [0001] The invention relates to a compound processing machine tool, in particular to a boring, milling and grinding compound processing machine tool, which belongs to the technical field of machine tools. Background technique [0002] The hole system processing technology and processing quality of complex parts are the key factors affecting the quality of the entire part. Boring and grinding are key processes in the processing of porous parts. The advantage of the boring process is that the processed hole system has high roundness accuracy. The efficiency is low, and the quality of the processed surface is poor. These traditional processes are more difficult to process the special-shaped holes of tapered holes, tapered surfaces and other parts. Moreover, the existing machine tool equipment has low flexibility for processing hole systems, and cannot adapt to the processing of parts with different apertures. At this time, the factory needs to invest in additio...

AI Technical Summary

Problems solved by technology

[0003] When the hole diameter of the part is large, the inner hole and the outer circle of the workpiece are processed with a smaller diameter tool or grinding wheel, and the circular axis CNC interpolation method is usually used in the circumferential direction. The disadvantage of this processing method is that the roundness of the processed hole is low and the step hole is the same Axial accuracy is low

[0004] Generally, a lathe is used to process the outer circle or the outer cone, in which the tool remains still and the spindle is used to rotate and feed, the machining efficiency is low and the surface of the part is poor

When encountering large or long parts, it is easy to cause difficulty in clamping

Due to the large moment of inertia and low rotation accuracy of large parts, the processing accuracy of parts is low due to traditional turning. Therefore, a new method of keeping large parts fixed and cutting tools with rotating feed is studied.

[0005] The processing of complex parts generally includes multiple processes. Milling, boring, and grinding are respectively clamped and processed on different machine tools, which results in low processing positioning accuracy and low processing efficiency.

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