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Manual assembly technology for cylinder cover bolt

An assembly process and artificial technology, which is applied in the manufacture of tools and hand-held tools, etc., can solve problems such as bolt elongation, torque not reaching the set value of the constant torque wrench, and affecting product quality.

Inactive Publication Date: 2017-02-08
WUXI MINGSHENG STRONG BLOWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, during the assembly of CA6102 series engine cylinder head bolts, sometimes the torque cannot reach the set value of the constant torque wrench, and the bolts are stretched, which seriously affects the product quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A manual assembly process for cylinder head bolts, which adopts the manual torque rotation angle method tightening process, and the tightening process parameters are 90±10N·m rotated by 75°±15°.

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Abstract

The invention discloses a manual assembly technology for a cylinder cover bolt. The manual assembly technology is characterized in that a manual torque rotation angle method tightening technology is adopted; and parameters of the tightening technology are that the torque is (90 + / - 10) N.m, and the rotation angle is (75 + / - 15) degrees. According to the technology, through setting the parameters, not only the axial force required by sealing of an engine can be guaranteed but also the bolt can be guaranteed not lengthened.

Description

technical field [0001] The invention relates to the technical field of bolt assembly, in particular to a cylinder head bolt assembly process. Background technique [0002] Cylinder head bolts are one of the most important bolts in the engine, and they are also typical representatives of high-strength bolts. How to determine the specifications of the bolts and the tightening process in the early stage of development is very important for the normal development of subsequent projects and the smooth commissioning of the engine. At the same time, the tightening method of the cylinder head bolts not only affects the tightness of the cylinder gasket, but also directly affects the reliability and durability of the engine work. Because a reasonable tightening process can keep the pressure distributed by each bolt uniform and reasonable. It has two advantages: 1. Avoid water leakage, air leakage, oil leakage and other phenomena caused by insufficient pre-tightening force, which wil...

Claims

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Application Information

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IPC IPC(8): B25B27/14
CPCB25B27/14
Inventor 张达明
Owner WUXI MINGSHENG STRONG BLOWER
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