A kind of precision numerical control grinding machine for inner cone surface of small hole

Abstract

The invention discloses a precision numerical control small-hole interior conical surface grinder, which comprises a grinder body, a transverse feeding unit and a longitudinal feeding unit, wherein the transverse feeding unit and the longitudinal feeding unit are arranged on the grinder body; the longitudinal feeding unit is provided with a first variable frequency high-speed motorized spindle; a precise valve seat positioning and clamping device is fixedly arranged in the axle center of the first variable frequency high-speed motorized spindle; a second variable frequency high-speed motorized spindle is arranged on the transverse feeding unit; a grinding wheel is arranged on the second variable frequency high-speed motorized spindle. According to the precision numerical control small-hole interior conical surface grinder, the first and second variable frequency high-speed motorized spindles can be matched to implement grinding machining of the grinding wheel over a workpiece; the precision numerical control small-hole interior conical surface grinder has the advantages of short process flow, once clamping, high production efficiency, high automation degree, high machining accuracy, stable machining quality and the like.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a precision numerical control grinding machine for inner cone surfaces of small holes. Background technique [0002] The machining of the inner cone surface of the valve seat of the high-pressure common rail injector of the internal combustion engine is a key process in machining, and its angle and roundness will affect the combined cross-sectional area with the valve seat of the high-pressure common rail injector, thereby affecting the work of the internal combustion engine performance, causing a series of failures. [0003] At present, the processing technology of the valve seat of the high-pressure common rail injector is as follows: the inner cone surface is roughly ground first, and then the inner cone surface is finely ground after passing the inspection. Due to the influence of employees' business skills, machine tool precision and other factors, the first-t...

AI Technical Summary

Problems solved by technology

Due to the influence of employees' business skills, machine tool precision and other factors, the first-time pass rate of the rough grinding inner cone surface process is between 85-90%, and the first-time pass rate of the precision inner cone surface process is between 70-75%. , inspection, and grading bring a huge workload, which is the bottleneck process that affects the product processing cycle

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