Processing method for pinion of automobile steering device

A technology of automobile steering gear and processing method, which is applied to the processing field of automobile steering gear pinion, can solve the problems of long processing time, waste of raw materials, long process flow, etc., and achieves the effects of saving materials, high precision and long service life

Inactive Publication Date: 2012-10-03
上海格尔汽车科技发展有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the processing of this kind of pinion is the process of turning and forming the round bar. Th

Method used

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  • Processing method for pinion of automobile steering device
  • Processing method for pinion of automobile steering device
  • Processing method for pinion of automobile steering device

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[0031] See figure 1 , See for cooperation figure 2 , The processing method of the automobile steering gear pinion gear of the present invention uses 16MnCr5 tool steel bar as a raw material and uses the following steps to process:

[0032] To make the workpiece blank, take a section of 16MnCr5 tool steel bar, and form the large-end long groove and flattened groove after pickling, cold drawing, straightening, sawing, tempering, shot blasting, the first phosphorus saponification, and the first cold extrusion. Small end, second cold extrusion to form large end internal spline hole, tempering, second phosphorus saponification, third cold extrusion integral molding, tempering, shot blasting, car big end, chamfering, drill small The center hole at the end, the 60° hole at the large end of the grinding and rust prevention are processed and processed into a workpiece blank with a specification equivalent to the pinion of an automobile steering gear; the workpiece blank has a gear sectio...

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Abstract

A processing method for a pinion of an automobile steering device adopts the following processing steps in sequence: processing a workpiece blank, conducting finish turning on an excircle, lathing the total length, drilling, and carrying out first cleaning, flexible rolling, heat treatment, thread lathing, second cleaning, hard rolling, external grinding, flaw detection and finished product cleaning, wherein the workpiece blank processing step comprises pickling, cold drawing, straightening, material sawing, tempering, shot-blasting, first phosphorus saponification, first cold extrusion for the formation of an elongated slot in a large end and a flat small end, second cold extrusion for a female spline hole in the large end, tempering, second phosphorus saponification, third cold extrusion integral formation, tempering, shot-blasting, large end lathing, beveling, small end central hole drilling, large end 60-degree hole grinding, and rust prevention. When the method provided by the invention is adopted for processing the pinion of the automobile steering device, materials are saved, the precision is high, and the service life is long.

Description

technical field [0001] The invention relates to a mechanical component, in particular to a processing method for a pinion gear of an automobile steering gear. Background technique [0002] Among the components of the automobile steering gear, there is a pinion, which is a safety part in the steering gear. When the steering wheel is rotated, the pinion gear will rotate accordingly, thereby driving the rack in the steering gear to rotate in the direction of the steering wheel. Therefore, the precision of the pinion must be high, the strength must be high, and the machining accuracy must be high. [0003] In the prior art, the processing of this pinion is a process of turning and forming a round bar. This processing process results in waste of raw materials, long process flow, cumbersome logistics and long processing time. Contents of the invention [0004] The object of the present invention is to provide a processing method for the pinion gear of the automobile steering ge...

Claims

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Application Information

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IPC IPC(8): B23P15/14
Inventor 孔令钢徐皓施伟刘振坚徐燕沈国新杨小健
Owner 上海格尔汽车科技发展有限公司
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