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Split differential shell internal expansion machining method

A processing method and differential gear technology, applied in metal processing equipment, metal processing machinery parts, manufacturing tools, etc., can solve the problem of inconvenient processing of differential gear housing, poor coaxiality of inner spherical surface, poor machining accuracy, etc. Problems, to achieve the effect of not easy to shake, good coaxiality, and compact fixture structure

Active Publication Date: 2018-07-20
HANGZHOU JILI MACHINERY
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a split-type differential case internal expansion processing method, which mainly solves the problems existing in the prior art that the processing of the differential case is not easy to operate during clamping, the positioning is relatively inaccurate, and the workpiece is processed during processing. It is easy to shake when it is used, so that the processing accuracy is poor, the coaxiality of the inner spherical surface is also poor, and the processing efficiency is low.

Method used

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  • Split differential shell internal expansion machining method
  • Split differential shell internal expansion machining method
  • Split differential shell internal expansion machining method

Examples

Experimental program
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Embodiment

[0026] Embodiment: The method for processing the inner expansion of the split differential case of this example, the steps are:

[0027] a. Insert the inner end of the split differential housing 31 blank into the positioning block of the internal expansion positioning fixture, insert the spring sleeve into the inner hole of the inner end of the split differential housing blank, and the hydraulic device drives the piston When moving backward, the pull rod is driven to move backward, the spring sleeve at the end of the pull rod moves backward along the tapered surface of the card core, the spring sleeve expands, and the spring sleeve fixes the split differential housing blank;

[0028] like figure 1 , the internal expansion positioning fixture includes a frame 1, the frame is provided with an oil pressure device 2, the front end of the frame is provided with a valve body 3 and a valve cover 4, the valve cavity of the valve body is provided with a piston 5, and the oil pressure d...

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Abstract

The invention relates to a differential shell machining method, in particular to a split differential shell internal expansion machining method, and solves the technical problems of inconvenience to operate during clamping in machining of a differential shell in the prior art, incorrect positioning, easy shaking of workpieces during machining, weaker machining precision, weaker coaxiality of an internal spherical surface, lower machining efficiency and the like. The method comprises the following steps: an inner end of a split differential shell blank is inserted in a positioning block of an internal expansion positioning fixture for fixation; the split differential shell is cut by a feed bearing mounting position cutter, so that outer circles of bearing mounting positions at the two endsof the split differential shell are formed at the same time; the split differential shell is cut again by a feed molding cutter, so that an inner gear mounting spherical arc surface of the split differential shell is machined; and a split differential shell finished product is deviated from the positioning block to finish machining.

Description

technical field [0001] The invention relates to a processing method for a differential case, in particular to a processing method for internal expansion of a split type differential case. Background technique [0002] The car differential housing is an important part of the car transmission system. The characteristic of this product is that the axial hole and the spherical surface of the inner cavity require high precision, and the spherical surface is difficult to process due to product structure restrictions. A Chinese patent discloses a grinding system and method for a differential case blank (publication number: CN106078439A), the steps of which are: A, the differential case to be processed is installed in the storage box with the bottom plate closed, and the The material storage box is hoisted into the bucket-shaped bin, the differential case rolls down from the storage box into the bucket-shaped bin, and the vibrator works to make the leftmost differential case roll to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B23Q11/10B23B31/40
CPCB23B31/404B23P15/00B23Q11/1053
Inventor 楼福寿
Owner HANGZHOU JILI MACHINERY
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