Method for processing integral casing of engine

A processing method and engine technology, which is applied in the field of mechanical parts processing, can solve the problems of low efficiency, difficulty in meeting the processing requirements of the overall casing, and low processing accuracy, and achieve good consistency, small deformation, and improved processing efficiency of rounded corners Effect

Inactive Publication Date: 2011-11-23
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing processing method is difficult to meet the processing requirements of the overall casing, and the proces

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  • Method for processing integral casing of engine
  • Method for processing integral casing of engine
  • Method for processing integral casing of engine

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Embodiment Construction

[0047] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0048] Such as Figure 1-10 shown.

[0049] A method for processing an engine blade integral casing, comprising the following steps:

[0050] Step 101: The casing blank inspection process, conduct ultrasonic inspection, check whether the blank material has forging defects such as slag inclusions, pores, cracks, defects, etc., check whether the external dimensions of the parts ensure that there is a machining allowance on each processing surface, and check whether the heat treatment status is To meet the requirements of HRC34-38, the main measurements in this step include 0-200mm vernier calipers and 0-500mm vernier calipers, etc. The main equipment includes USN58 ultrasonic flaw detector and JC05-PHR-16 Rockwell metal hardness tester;

[0051] Step 102: Rough turning process of the inner shape of the casing, such as image 3 After rough-turning pa...

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Abstract

The invention relates to a method for processing an integral casing of an engine, which is characterized by mainly comprising the steps of: inspecting blanks, carrying out rough turning on inner and outer shapes of the casing, carrying out numerical control milling on the outer shape of the casing and engraving lines for trisection, carrying out wire cutting and trisecting on the casing on the basis of the trisection lines, carrying out aging and stress-relieving treatments, grinding upper and lower end faces and processing two dowel holes in the lower end face, carrying out blade slot treatment and processing a faying surface and a flange hole, carrying out finish milling on the outer shape of the casing, carrying out the aging treatment again, assembling the trisected modules and establishing a benchmark again, carrying out finish turning on the inner surface of the casing, disassembling the modules of the casing, carrying out the finish milling on blades and assembling the modules of the casing, wherein a fillet variable-axis plunge milling method, a blade spacing processing method and a flexible supporting method are adopted in the blade finish milling process. The method provided by the invention has the advantages: the technical process is simple; the produced integral casing has higher precision; the advantages of good consistency, little deformation and high efficiencyare provided in the blade processing; the technical problem that the integral casing is difficult in numerical control is solved by means of the trisection processing method; and the process method can also be used for the development of multilevel integral casings.

Description

technical field [0001] The invention relates to a processing method of a mechanical part, in particular to a processing method of a blade casing of a high-speed engine, in particular to a processing method of an integral casing of an engine. Background technique [0002] At present, with the improvement of engine requirements and performance, the design of the engine rectifier casing is more and more inclined to the overall structure design, the overall structure has fewer connecting elements, the number of parts is reduced from the original 100-200 to 10-20, and the quality is greatly improved. Relief, significantly improved reliability, can greatly improve the performance of the engine. The overall structural design of the casing brings many difficulties to its manufacture. Compared with the integral rotor, the processing technology of the integral casing is more complicated. Because the blades of the integral casing are distributed inside the casing, the accessibility of ...

Claims

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Application Information

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IPC IPC(8): B23P15/00B23P15/02
Inventor 郝小忠何磊耿习琴王珉鲍益东王恒厂
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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