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Electric combined assembling process for cylinder cap bolts

A combined assembly and electric technology, applied in metal processing, manufacturing tools, metal processing equipment, etc., can solve problems such as affecting product quality, torque not reaching the set value of the torque wrench, and bolt elongation.

Inactive Publication Date: 2017-05-31
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

[0015] An electric combination assembly process for cylinder head bolts, which uses an electric combination tightening machine, the tightening process parameters are 95±5N·m to 80°±5°, and the final qualified torque detection range is 140-170N·m.

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Abstract

The invention discloses an electric combined assembling process for cylinder cap bolts. According to the electric combined assembling process, an electric combined tightening machine is adopted, and the tightening process parameters of the tightening machine show that the cylinder cap bolts are tightened by 80+ / -5 degrees with the torque of 95+ / -5 N.m, and the final qualified torque detection range is 140-170 N.m. Through setting of the process parameters, the axial force needed by sealing of an engine can be ensured, and meanwhile, the effect that the bolts are not drawn out can be ensured.

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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Patent Type & Authority Applications(China)
IPC IPC(8): B23P19/06
CPCB23P19/06
Inventor 张达明
Owner WUXI MINGSHENG STRONG BLOWER
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