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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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  • 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. This processing process causes waste of raw materials, long process flow, cumbersome logistics and long processing time.

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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Embodiment Construction

[0031] see figure 1 , with reference to figure 2 , the processing method of automobile steering gear pinion of the present invention, is to be raw material with 16MnCr5 tool steel bar, adopts the step processing that following order is carried out:

[0032] Make the workpiece blank, cut a section of 16MnCr5 tool steel bar, pickling, cold drawing, straightening, sawing, tempering, shot blasting, first phosphorus saponification, first cold extrusion to form a large end long groove, flat Small end, the second cold extrusion to form the inner spline hole of the big end, tempering, the second phosphorus saponification, the third cold extrusion integral molding, tempering, shot blasting, turning the big end, chamfering, drilling small End center hole, grinding big end 60° hole and anti-rust, processing and processing into a workpiece blank with specifications equivalent to the automobile steering gear pinion; the workpiece blank has gear segment 1, big end 2, small end 3, and the ...

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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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