Large broaching tool for one-step broaching forming

Abstract

The invention relates to a large broaching tool for one-step broaching forming. The large broaching tool comprises a broaching tool body and fasteners, and is characterized in that the broaching tool body is of a circular-barrel-shaped structure, a three-section broaching structure comprising a rough broaching tool case, a thick tooth-expanding fine tool case with tooth-skipping-structure circular holes, and a spline rough broaching part, a front handle and a rear handle are arranged on the broaching tool body; the spline rough broaching part is formed through machining at the middle section of the broaching tool body; the rough broaching tool case is fixed to the front part of the broaching tool body in a sleeving manner, the thick tooth-expanding fine tool case with the tooth-skipping-structure circular holes is fixed to the rear part of the broaching tool body in a sleeving manner, and the front handle and the rear handle are arranged in a front barrel and a rear barrel of the broaching tool body respectively, and are fastened through the fasteners respectively. Each of the broaching tool body, the rough broaching tool case, the thick tooth-expanding fine tool case with the tooth-skipping-structure circular holes, the front handle and the rear handle is provided with a location key slot. Front broaching teeth, rear broaching teeth, spline tooth roots and spline teeth are arranged on the broaching tool body. According to the large broaching tool disclosed by the invention, the assembly links of the broaching tool are reduced, the influence of an assembly error on the accuracy of the broaching tool is eliminated, and a chamfering tool case is not needed; and the large broaching tool is simple to machine, low in cost, easy to install and detach, and reliable in quality.

Description

technical field [0001] The invention relates to a one-draw forming large broach, which is a large broach for large internal gears. Background technique [0002] At present, the large broach of the inner ring gear of the gear is difficult to process, and the large broach has been imported for a long time and is expensive. Not only does it need to spend a lot of foreign exchange, but the structure of the broach is complicated. Production brings a lot of inconvenience. However, the large broaches in China have a structure of three broaching groups or two broaching groups. The large broaches of this structure need to be repeatedly positioned during the broaching process, resulting in low efficiency, high broaching costs and unstable product quality. Therefore, it is necessary to develop a large broach that can be formed by one-time broaching, so as to improve broaching efficiency and ensure stable and reliable product quality; at the same time, it can save a lot of foreign exch...

AI Technical Summary

Problems solved by technology

[0002] At present, the large broach of the inner ring gear of the gear is difficult to process, and the large broach has been imported for a long time and is expensive. Not only does it need to spend a lot of foreign exchange, but the structure of the broach is complicated. Production brings many inconveniences

However, the large broaches in China have a structure of three pulls or two sets of broaches. The large broaches of this structure need to be positioned repeatedly during the broaching process, resulting in low efficiency, high broaching costs and unstable product quality.

Images