Grinding method for ring-shaped part

Abstract

The invention discloses a grinding method for a ring-shaped part. The grinding method comprises the following steps: designing an auxiliary tool according to a structural shape of a to-be-grinded ring-shaped part, wherein height of the auxiliary tool is matching height required by the grinded ring-shaped part; selecting a unified positioning datum plane on the ring-shaped part; fixedly mounting the auxiliary tool to the ring-shaped part in a threaded connection mode; after the lower surface of the auxiliary tool clings to the datum plane of the part, coating a layer of thin inkpad on the upper surface of the auxiliary tool, coating a layer of grinding paste on a to-be-grinded surface of the ring-shaped part; and grinding the to-be-grinded surface until the auxiliary tool starts contact the inkpad by adopting a grinding tool. The height of the part grinded by the method disclosed by the invention can be effectively controlled, so that the height consistency of the grinded part is guaranteed. Gap requirements and tightness requirements of the assembled part are guaranteed, so that the accuracy and the adjustability of a follow-up test of the part are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of machining, and in particular relates to a grinding method for ring-shaped parts. Background technique [0002] Complex ring-shaped parts refer to large-scale ring-shaped components formed by connecting, assembling and welding multiple identical machined parts through conduits. Clamp positioning, difficult processing and other characteristics. [0003] After the above parts are processed, they will be assembled with various types of nozzles to form a fuel manifold, which will play the role of injecting and atomizing fuel. As an important part of the engine combustion chamber, the fuel manifold, its fuel flow, atomization quality and fuel distribution are related to the stability of combustion and affect the thrust, safety, reliability, economy and environmental protection of the engine. Therefore, the assembly of the main pipe and the nozzle is very strict. In general, under the premise of ensuring the s...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the main pipe needs to go through a grinding process before assembling the nozzle. By controlling the height and surface quality of the main pipe after grinding, the assembly requirements of the main pipe and the nozzle are guaranteed. Most of them are hand-grinded by workers based on their feelings, resulting in inconsistent heights of the ground parts, and there will be a situation where one side is high or low, resulting in partial out-of-tolerance gaps after assembly, and the gap requirements after assembly cannot be guaranteed.

In addition, the grinding plane is used as the interface where fuel is transported to other parts, and the grinding surface is inclined, so that the interface cannot be completely fitted after the parts are assembled, so the sealing effect of the parts is not good

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