Process method for chamfering mouth of cylinder hole after plasma spray of cylinder hole
A process method and plasma technology, which is applied in the field of chamfering of the cylinder hole after ion spraying, can solve the problems of uneven force on the piston ring, scratches of the piston ring, and difficulty in assembly, so as to ensure the uniformity of the chamfer and ensure the assembly Accuracy, the effect of improving assembly quality
Active Publication Date: 2020-08-18
CHINA FIRST AUTOMOBILE
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Problems solved by technology
The uneven chamfering of the cylinder orifice of the cylinder block will lead to positional deviation when assembling the piston, resulting in uneven force on the piston ring during the assembly process, which is not only difficult to assemble, but also may cause scratches on the piston ring or strain on the inner wall of the cylinder bore
In addition, the chamfering of the cylinder hole may lead to defects such as delamination, peeling and chamfering of the sprayed coating, which directly leads to the scrapping of the cylinder block or piston ring and cannot be assembled, which not only wastes manufacturing costs, but also leads to waste of resources
Method used
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[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0022] A process method for chamfering the mouth of a cylinder hole after plasma spraying, comprising the following steps:
[0023] Step 1. Before spraying the cylinder bore, use the special shielding ring 1 to effectively shield the mouth of the cylinder bore 2: before spraying the cylinder bore, use the special shielding tool to effectively shield the mouth of the cylinder bore to ensure A transitional coating with rounded corners is formed on the part to reduce the resistance of chamfering. Such as figure 1 As shown, before the cylinder bore is sprayed, a special shielding ring is used for the...
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Abstract
The invention discloses a process method for chamfering a mouth of a cylinder hole after plasma spray of the cylinder hole. The process method comprises the following steps of shielding the cylinder hole with a special shielding tool before the mouth of the cylinder hole is sprayed; carrying out plasma spray in the cylinder hole; clamping a cylinder block on a boring clamp and confirming coordinate positions of cylinder holes by using a special detection device; and chamfering the mouth of the cylinder hole by using a special alloy coating tool. By cutting and machining a double metal materialby using the special tool at the same time, the chamfering uniformity of the mouth of the same cylinder hole is guaranteed, and meanwhile, the roughness consistence of two metals on a chamfered surface is guaranteed, the assembling precision of an assembled piston by chambering the air cylinder hole and a piston ring is guaranteed and the assembling quality is improved.
Description
technical field [0001] The invention belongs to the technical field of automobile engine processing and manufacturing, and in particular relates to a process method for chamfering the cylinder hole after cylinder hole plasma spraying. Background technique [0002] During the manufacturing process of automobile engine block, the quality of each process will affect the assembly performance or performance of the product. In the process of bimetal processing, the consistency of the cutting performance of the two metals cannot be completely guaranteed, which is a major problem in the field of bimetal cutting. The uneven chamfering of the cylinder orifice of the cylinder block will lead to positional deviation when assembling the piston, resulting in uneven force on the piston ring during the assembly process, which is not only difficult to assemble, but also may cause scratches on the piston ring or strain on the inner wall of the cylinder bore . In addition, the chamfering of ...
Claims
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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 王显芝何勇王晓秋张晓胜黄勇宦作君季强王甫峰
Owner CHINA FIRST AUTOMOBILE