Dedicated clamp for reaming sheath of connecting rod of engine

A technology of engine connecting rod and special fixture, which can be used in clamping, manufacturing tools, metal processing mechanical parts, etc., and can solve problems such as skew, air pressure ratio reduction, and leakage of piston group.

Inactive Publication Date: 2006-12-06
刘强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During work, there is relative rotation between the connecting rod sleeve and the piston pin, which is prone to wear and tear. After the connecting rod sleeve is worn, the noise of the engine will increase and the air pressure ratio will decrease, which will seriously affect the normal operation of the engine, so it must be replaced.
The new connecting rod sleeves have machining allowances. Although ordinary reamers can guarantee a certain shape accuracy and dimensional accuracy, because there is no special fixture in ordinary auto repair shops, accurate positioning and clamping of the connecting rod sleeves cannot be achieved. Therefore, the position accuracy of the connecting rod sleeve cannot be guaranteed, that is to say, in the case of manual control, the axis of the processed connecting rod sleeve hole cannot be guaranteed to be perpendicular to its process reference (one end face of the connecting rod). After the repaired connecting rod sleeve is assembled to the engine, the piston will be skewed in the cylinder, causing eccentric wear between the piston and the cylinder, air leakage and oil leakage between the piston group and the cylinder. If the verticality difference is too large, the connecting rod will be damaged. Will not be able to assemble, and eventually only the connecting rod can be replaced, which greatly increases the maintenance cost

Method used

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  • Dedicated clamp for reaming sheath of connecting rod of engine

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Embodiment Construction

[0008] The special clamp for reaming of the engine connecting rod sleeve, as shown in the accompanying drawings, includes a clamp body 22, a gland 21 and a guide sleeve 23. The clamp body 22 has a positioning plane 22a that can fit the reference end surface of the connecting rod; the gland 21 is screwed to the clamp body 22, and the gland 21 is provided with a reaming hole in the axial direction for the reamer 1 to pass through When turning the gland 21, the connecting rod can be clamped on the positioning plane 22a. The inner hole of the guide sleeve 23 is in clearance fit with the guide cylinder 11 of the reamer, and the axis of the inner hole is perpendicular to the positioning plane 22a of the chuck body 22 . The guide sleeve 23 is integrated with the clamp body 22, so that the structure of the clamp is more concise and practical.

[0009] The above-mentioned reamer 1 consists of a cone-shaped cutting edge 13 positioned at the head, a correcting blade 12 adapted to the pr...

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PUM

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Abstract

A special fixture for reaming on the connecting rod sleeve of engine has a fixture body consisting of a locating surface matched with the reference end face of said connecting rod, a clamping unit for fastening said connecting rod onto said locating face, and a guide sleeve with an internal hole matched with the guide post of reamer.

Description

technical field [0001] The invention relates to the technical field of special maintenance tools for engine connecting rod sleeves, in particular to a special clamp for reaming of engine connecting rod sleeves. Background technique [0002] Known engine connecting rod, its one end is connected with piston by piston pin, and its other end is fixedly connected with crankshaft by connecting rod bearing cap. During work, there is relative rotation between the connecting rod sleeve and the piston pin, which is prone to wear and tear. After the connecting rod sleeve is worn, the noise of the engine will increase and the air pressure ratio will decrease, seriously affecting the normal operation of the engine, so it must be replaced. The new connecting rod sleeves have machining allowances. Although ordinary reamers can guarantee a certain shape accuracy and dimensional accuracy, because there is no special fixture in ordinary auto repair shops, accurate positioning and clamping of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/06
Inventor 刘强
Owner 刘强
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