Engine crankcase bearing block splitting working method and apparatus

A crankcase and processing device technology, which is applied to crankshaft bearings, engine components, machines/engines, etc., can solve the problems affecting the machining accuracy of cracking grooves and is not suitable for the production of multiple varieties, so as to save broaching process and small deformation , to reduce the effect of deformation

Inactive Publication Date: 2007-10-17
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this cracking device, a supporting oil cylinder is installed above each bearing cover, which is not suitable for the production of multiple varieties, and tool wear will affect the machining accuracy of cracking grooves

Method used

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  • Engine crankcase bearing block splitting working method and apparatus
  • Engine crankcase bearing block splitting working method and apparatus
  • Engine crankcase bearing block splitting working method and apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The method and device of the present invention will be further described in detail in the following embodiments given in conjunction with the accompanying drawings.

[0023] The engine crankcase bearing block cracking processing method of the present invention, carry out according to the following steps:

[0024] The back pressure mechanism composed of the compression block 8, the back pressure support 13, etc. goes down, and the compression block 7 exerts back pressure on the bearing cover 3 through the back pressure spring 9.

[0025] Under the action of the horizontal hydraulic cylinder 17, the slider body 15 and the broach bar 5, the outer diameter is D 0 The high-pressure hose 6 is inserted into the bearing hole with a diameter D from the initial position, and the broach 4 completes the processing of the initial cracking groove 1.

[0026] The high-pressure oil pressurized by the booster cylinder 16 enters the high-pressure hose 6, and the inner high pressure caus...

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PUM

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Abstract

The present invention relates to an engine crankcase body bearing seat processing method and its special-purpose equipment. Its processing method includes: a. in the crankcase body bearing seat splitting process always utilizing back pressure mechanism to apply can retain a certain back pressure to bearing seat; b. utilizing slide block mechanism with broach bar to implement splitting channel processing of two sides of bearing seat hole centre place; and c. utilizing pressuried high-pressure liquor to make the bearing seat hole be broken and separated from splitting channel position and from crankcase body bearing seat. Its processing equipment is formed from main machine and back pressure mechanism. Said equipment also comprises crankcase body positioning plate and positioning clamping mechanism, slide block body and pressurizing cylinder, etc.

Description

technical field [0001] The invention relates to a processing method and special equipment for a bearing seat of an engine crankcase body. Background technique [0002] As shown in accompanying drawing 1, the crankcase bearing housing is made up of many bearing housings 2 and bearing caps 3 (a six-cylinder engine crankcase body has seven bearing housings and seven bearing caps), and the diameter of the bearing hole is D. The traditional processing method is separate processing, that is, the bearing cap and the bearing seat (the bearing seat and the crankcase body are an integral casting) are cast separately, and then the bearing cap, the bearing seat and the joint surface are milled and ground respectively. Bolt holes are machined separately. The traditional process mentioned above has low production efficiency, high manufacturing cost, poor assembly accuracy and high reject rate. [0003] The engine crankcase bearing block cracking processing technology is to process the i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P23/04B23D31/00F16C9/02B23P17/02F02F7/00
Inventor 杨慎华寇淑清赵勇郑祺峰
Owner JILIN UNIV
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