Groove grinding machine for automatically correcting screw tap

Abstract

The invention discloses a groove grinding machine for automatically correcting a screw tap. The groove grinding machine comprises a first base, a second base, a grinding assembly, an indexing assembly, a feeding assembly and a correcting assembly, wherein a clamping assembly and the feeding assembly are arranged on the first base, the grinding assembly is arranged on the second base, the first base is provided with the indexing assembly, and the second base is provided with the correcting assembly. According to the groove grinding machine for automatically correcting the screw tap, disclosed by the invention, error which is caused by a former process can be corrected, the indexing is accurate due to the arrangement of the indexing assembly, the product quality is increased, the operation is simple, and the labor intensity of a worker is reduced.

Description

technical field [0001] The invention relates to a screw tap processing machine, in particular to an automatic correcting screw tap groove grinding machine. Background technique [0002] Straight fluted taps are one of the most used tools in thread cutters. The production process of straight fluted taps is divided into two types: full grinding and milling. Chip groove, after heat treatment, use a special groove grinder to throw the groove. [0003] The existing technology uses artificial sand bars to drive the grinding wheel into the groove shape of the tap, which depends entirely on the worker's operating experience. The problem is that the groove shape changes too much and the rake angle error is too large. Even the best workers cannot guarantee ±3°, which cannot meet the requirements Each factory process standard. The indexing adopts floating manual indexing, which cannot correct the error caused by the milling process in the previous process. The grinding wheel has high...

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Problems solved by technology

[0003] The existing technology uses artificial sand bars to drive the grinding wheel into the groove shape of the tap, which depends entirely on the worker's operating experience. The problem is that the groove shape changes too much and the rake angle error is too large. Even the best workers cannot guarantee ±3°, which cannot meet the requirements Each factory process standard

The indexing adopts floating manual indexing, which cannot correct the error caused by the milling process in the previous process. The grinding wheel has high requirements during grinding. If it is too hard, the fine grain size will not move the workpiece and it will burn easily. If it is too soft, the coarse grain size grinding wheel will quickly need threshing. Frequent corrections make it difficult to find a balance point, the labor intensity of workers is also high, and the production efficiency is low

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