High-precision center hole grinding machine and machining method thereof

Abstract

The invention discloses a high-precision center hole grinding machine and a machining method thereof. The high-precision center hole grinding machine is a machine tool for providing a high-precision machining reference for machining high-precision shaft parts and mainly comprises a rack stand column, a grinding head mechanism, a workpiece clamp, a tailstock and a dresser; the tailstock supports aworkpiece and drives the workpiece to rotate in a stepless speed change mode, the workpiece frame clamps or supports the workpiece, and the grinding head spindle is provided with a grinding wheel to grind a center hole of the workpiece; and the dresser dresses the grinding wheel through the rotating diamond dressing rod. According to the high-precision center hole grinding machine, the workpiece rotates, the grinding wheel rotates and reciprocates along the generatrix of 60 degrees to envelop the center hole to form a net-shaped cross pattern, so that the oil storage performance and the lubricating performance of the center hole are improved, the precision retentivity of the center hole is remarkably improved, and the service life of the center hole is remarkably prolonged; due to the factthat workpiece rotation, grinding wheel autorotation and reciprocating motion in the 60-degree generatrix direction are achieved through independent mechanisms, the precision of all the mechanisms isimproved, and the grinding precision of the center hole is remarkably improved.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a high-precision center hole grinder and a processing method thereof. Background technique [0002] At present, there are mainly two processing methods for the center hole. One is to scrape and grind the center hole through the multi-edge center and the center. This method makes the center hole processing accuracy poor, the success rate is low, time-consuming and labor-intensive, and the work efficiency is low; the other The first processing method is to process the center hole through a center hole grinder. Due to the large reverse impact of the movement of the grinding head during the grinding process of the existing grinder, it is difficult to improve the machining accuracy. In addition, due to the various The movement is completed by the superposition of the composite mechanism, and there is no independent mechanism to complete it. When the workpiece is processed by this ...

AI Technical Summary

Problems solved by technology

[0002] At present, there are mainly two processing methods for the center hole. One is to scrape and grind the center hole through the multi-edge center and the center. This method makes the center hole processing accuracy poor, the success rate is low, time-consuming and labor-intensive, and the work efficiency is low; the other The first processing method is to process the center hole through a center hole grinder. Due to the large reverse impact of the movement of the grinding head during the grinding process of the existing grinder, it is difficult to improve the machining accuracy. In addition, due to the various The movement is completed by the superposition of the composite mechanism, and there is no independent mechanism to complete it. When the workpiece is processed by this processing method, the movement of each component is mutually influenced, and it is difficult to improve the processing accuracy.

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