Piston copper bush assembling machine

Abstract

The invention relates to a piston copper bush assembling machine which comprises a rack, an angle positioning assembly and a horizontal press-fitting mechanism; the horizontal press-fitting mechanism comprises a press-fitting floating assembly; the press-fitting floating assembly comprises a fixed seat, a floating mechanism, a clamping mechanism and a locking mechanism; the clamping mechanism can float in the horizontal direction and the vertical direction relative to the fixed seat through the floating mechanism; the locking mechanism comprises a locking driving part and a locking pin; a fixing sleeve is arranged on the fixing seat; the floating mechanism is provided with a limiting bush; the locking driving part can drive the locking pin to stretch into or retract out of the limiting bush along the fixing sleeve; the angle positioning assembly comprises a lifting mechanism and a positioning mechanism; the lifting mechanism is provided with a lifting platform and a lifting driving part; the positioning mechanism comprises a positioning seat, a horizontal driving part, a positioning rod support, an auxiliary positioning part and at least two positioning rods; the two positioning rods are horizontally fixed on the positioning rod support; and the auxiliary positioning part is provided with butt joint holes which are in butt joint with the two positioning rods. The copper bush inlaying position precision and the production efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of manufacturing internal combustion engine parts, and in particular relates to a piston copper sleeve assembly machine. Background technique [0002] The piston is an important component of the internal combustion engine. Known as the "heart" of the internal combustion engine. [0003] The piston bears repeated alternating mechanical and thermal loads under the conditions of high temperature, high pressure and high speed. With the continuous improvement of engine power, higher requirements are put forward for the wear resistance and bearing capacity of the piston pin hole. Copper is a wear-resistant material. Using copper sleeves inlaid on the inner wall of the piston pin hole can improve the wear resistance of the piston pin hole. and bearing capacity to prevent engine failure caused by pin seat cracking. [0004] In the processing of the copper sleeve inlaid with the piston pin hole in the prior art, t...

AI Technical Summary

Problems solved by technology

For example, patent CN201711282502.8 discloses a piston cold-fitting copper sleeve machine tool, which uses the principle of thermal expansion and cold contraction to convert the over-win fit of the copper sleeve and the pin hole into a clearance fit and complete the assembly quickly to ensure that the copper sleeve has the same size after cooling. Avoid scratching the piston pin hole and destroying the mating surface between the pin hole and the copper sleeve during the assembly process, but the manufacturing cost of this method will increase by 20-30%. In the production process, there are defects such as low production efficiency and difficulty in ensuring the position accuracy of the inlaid copper sleeve. Moreover, human factors are very easy to produce the situation that the inlay is not in place and the workpiece is scrapped.

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