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Engine piston pin snap ring press fitting tool

A technology for press-fitting tooling and piston pins, which is applied in the manufacture of tools, hand-held tools, etc., can solve problems such as insufficient accuracy of detection methods, and achieve the effects of eliminating quality risks, improving quality control levels, and good error-proofing capabilities

Active Publication Date: 2014-06-04
SAIC-GM-WULING AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem that the existing tooling used for the installation of the engine piston pin snap ring cannot detect missing or improper installation of the snap ring, and the accuracy of the existing detection method is insufficient, the invention provides an engine piston pin snap ring Pressing tooling

Method used

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  • Engine piston pin snap ring press fitting tool
  • Engine piston pin snap ring press fitting tool
  • Engine piston pin snap ring press fitting tool

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0037] like figure 1 , Image 6 As shown, the engine piston pin snap ring press-fitting tooling of the embodiment of the present invention includes a bracket 1 and a pressure rod 2 fixed on the bracket 1 and capable of being controlled to expand and contract; the bracket 1 includes a support seat 10 for supporting the engine piston. The rod assembly P1 has a positioning device on the support seat 10; the front part of the pressure rod 2 is the pressure head 20, and the middle part is provided with a boss, named as the upper boss 21, and the snap ring can be placed on the pressure head 20 of the pressure rod 2 And it is conflicted by the upper boss 21 table; the position of the pressure rod 2 corresponds to the position of the support seat 10. Preferably, the indenter 20 is made of 65Mn material, the hardness is HRC 45-50 after heat treatment,...

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Abstract

The invention provides an engine piston pin snap ring press fitting tool. The engine piston pin snap ring pressing fitting tool comprises a support and a press rod, wherein the press rod is fixed to the support and can be controlled to stretch, the support comprises a supporting seat, the position of the press rod corresponds to that of the supporting seat, an upper boss is arranged on the middle section of the press rod, and a displacement sensor used for detecting the displacement of the press rod is fixedly arranged beside the press rod and on the support. Through the adoption of the technical scheme, if a snap ring at the upper end of a piston is not assembled or the assembling of the snap ring is not in place, the displacement sensor at the upper end of the press rod senses whether the snap ring at the upper end of the piston is neglected or not or whether the assembling of the snap ring is in place or not through the moving of a press head of the press rod, the problems of error assembling and neglected assembling can be found out in time, the production rhythm can be improved, and manpower can be saved.

Description

technical field [0001] The invention relates to a tool for press-fitting a snap ring of an engine piston pin in vehicle engine assembly. Background technique [0002] At present, when the domestic engine assembly line assembles the piston pin snap ring, there are mainly two ways to check whether the snap ring is installed in place: one is to directly inspect the piston pin by the operator after pressing the snap ring or use a manual inspection tool to push the piston pin and observe the piston pin. Whether it protrudes outwards, for visual inspection and manual inspection tools, the reliability is low, the labor intensity is high, and there is a quality risk of artificial missed inspection due to fatigue operation in long-term inspection; the other is to use LVDT ( Linear adjustable differential transformer) measurement technology, develop a new detection unit to detect the existence and position of piston pin snap ring, this technology is affected by assembly quality, parts...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B27/02
CPCB25B27/12
Inventor 李进都王大明孙爱民刘立波梅杰
Owner SAIC-GM-WULING AUTOMOBILE CO LTD
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