Alignment method of tooling fixture for gear grinding with shaft

Abstract

The invention provides a method for aligning a tooling fixture for gear grinding with a shaft. The tooling fixture includes a clamping tank body and an adjustable tightening mechanism, and the adjustable tightening mechanisms are uniformly arranged on the upper part of the clamping tank body. and the lower part, at least three adjustable fastening mechanisms are provided on the upper and lower parts, respectively, for adjusting the coaxiality of the gear shaft and the worktable; the adjustable fastening mechanisms include adjustable fasteners and fine adjustment mechanisms, the said The adjustable fastener is arranged on the upper portion for adjusting the overall position of the gear shaft, and the fine adjustment mechanism is arranged on the lower portion for finely adjusting the coaxiality of the upper end of the gear shaft. The invention effectively solves the technical problems of low clamping safety, unstable clamping and the like brought about by the traditional thimble-type grinding and clamping method.

Description

technical field [0001] The invention belongs to the technical field of gear grinding fixtures, in particular to an alignment method of a gear grinding fixture with shafts. Background technique [0002] The grinding process is the last process in the gear forming process, that is, the finishing process. The specific concept is: the process of grinding the teeth of the gear by the gear grinding machine is called grinding. Gear grinding is divided into: internal and external grinding of spur gears of cylindrical gears; internal and external grinding of helical gears of cylindrical gears, and grinding of conical bevel gears. Gear grinding machine is a metal cutting machine tool for gear finishing. The grinding wheel is used as a tool to grind (form grinding) the gear tooth surface that has been hobbed or shaped to improve the gear accuracy and surface finish. It is suitable for finishing steel gears with high hardness after quenching. [0003] In the current gear grinding pr...

AI Technical Summary

Problems solved by technology

[0004] Most of the current methods of gear grinding for a gear with a shaft are: use the concentric upper and lower jacks of the machine tool to tighten the gear shaft, and set a pressure plate or other fixing mechanism on the lower part of the gear shaft to fix it with the workbench, so as to Guarantee its stability in the process of being processed; however, this clamping method has higher requirements on the pressure and coaxiality of the upper hydraulic thimble of the machine tool. With the increase of the use time of the machine tool, the hydraulic system is aging and prone to pressure relief. At this time, the coaxiality of the machined shaft gear will not be guaranteed. If the gear setting is high and the overall center of gravity is too high, the workpiece will be dumped during the rotation of the worktable, thereby smashing the machine tool. Its safety is worthwhile. Discussion; moreover, when the upper and lower tapered thimbles are used to cooperate with the center hole of the gear shaft, the machining accuracy of the tapered center hole is also very high. If there is a machining deviation, it will cause the gear to be processed It is always in a deviated state; and due to the long-term friction between the thimble and the center hole, the thimble will be worn. In the case of wear, even if the taper of the center hole is consistent with the original design of the thimble, and the coaxiality with the gear is within the specified range, The overall deviation of the gear will also occur; in the machining workshop, there are many iron slags, which often fall into the center hole of the gear shaft. When clamping with a thimble, the top deviation will occur due to the existence of iron slag , in this state, alignment will shift the entire gear shaft

Therefore, there are many disadvantages in this clamping method, which needs to be further improved.

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