Engine Connecting Rod Small Head Hole Honing Fixture

Abstract

The invention discloses a honing clamp for a connecting rod small end hole of a motor to overcome the defects that connecting rod small end holes are honed into bell mouths or eccentric holes and the like caused by the fact that honing clamp for connecting rod small end holes in the prior art might cause axial twisting of connecting rod small end holes. The honing clamp comprises a base plate, a cover plate support column, limit plates, large end support columns and a cover plate; a U-shaped groove opening upwards is arranged at the center of the upper end surface of the base plate; the cover plate support column is arranged on one side of the base plate, and the large end support columns are arranged on the other side of the base plate; the two limit plates are arranged on two sides of the U-shaped groove of the base plate respectively, and rectangular limit grooves opening upwards are arranged on the limit plates respectively; and the cover plate is hinged on the cover plate support column, and a U-shaped groove opening downwards is arranged at a position corresponding to the U-shaped groove of the base plate on the cover plate. The honing clamp has the advantages of being capable of reducing axial twisting of the connecting rod small end hole and overcoming the defect that the connecting rod small end hole is honed into a bell mouth or an eccentric hole.

Description

Technical field [0001] The invention relates to a honing processing technology for a small end hole of an engine connecting rod, in particular to a honing fixture for the small end hole of an engine connecting rod. Background technique [0002] The connecting rod is one of the important components of the engine, and its main function is to convert the linear motion of the cylinder piston into rotary motion. Generally, two through holes are provided on the connecting rod, one for connecting the cylinder piston and the other for connecting the crankshaft assembly. In the connecting rod processing process, the small end hole of the connecting rod needs to be honed, so that the inner wall surface of the small end hole produces a 45-degree cross-shaped fine and dense pattern, so that it can store lubricating oil during use and ensure that there is Better lubrication effect. Due to the high dimensional accuracy of the small-end hole of the connecting rod and the process requirements ...

AI Technical Summary

Problems solved by technology

Since there is no restriction on one end of the big end hole of the connecting rod, one end of the big end hole of the connecting rod swings seriously during the honing process, which may cause the axial twist of the small end hole of the connecting rod

In addition, since only the axial movement distance of the connecting rod is limited, the movement itself is not restricted, which may also cause axial twisting of the small head hole of the connecting rod

Apparently, the prior art jig for honing the small end hole of the connecting rod may cause the axial twist of the small end hole of the connecting rod, so that the small end hole of the connecting rod is honed into a bell mouth or an eccentric hole.

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