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Process method for precisely machining piston rod part of aero-engine actuator cylinder

An aero-engine and precision machining technology, which is applied in the field of aero-engine actuators, can solve the problems of uneconomical further improvement of surface quality, residual processing lines on the surface of parts, wear of aprons and cylinders, etc., to improve the reliability of use and Effects of service life, improvement of surface quality, and improvement of pass rate

Pending Publication Date: 2021-04-30
SHENYANG LIMING AERO PARTS MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There will be ring-shaped processing lines on the surface after turning and grinding, and traditional processing methods such as polishing cannot completely remove the lines. The surface roughness limit that this method can achieve is Ra0.2μm, which cannot further improve the surface quality economically
During the long-term use of the engine, the above-mentioned shortcomings of the piston will cause the wear of the rubber ring and cylinder in the assembly, and even the assembly will be scrapped

Method used

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  • Process method for precisely machining piston rod part of aero-engine actuator cylinder
  • Process method for precisely machining piston rod part of aero-engine actuator cylinder
  • Process method for precisely machining piston rod part of aero-engine actuator cylinder

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0022] In order to solve the problems existing in the existing technology, such as Figure 1 to Figure 3 As shown, the present invention provides a process method for precision machining of the piston rod portion of an aero-engine cylinder, which is used for a lathe with Hawk energy processing equipment, comprising the following steps:

[0023] S1. Rough turning of the piston rod part, use the turning tool blade to process the outer circle of the piston rod part, and set the processing parameters of the lathe as follows: the spindle speed of the lathe is 1200r / min, the feed rate is 0.1mm / r, and the back cutting amount is 0.2mm; if figure 1 The structur...

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Abstract

The invention discloses a process method for precisely machining a piston rod part of an aero-engine actuator cylinder, and belongs to the technical field of aero-engine actuator cylinders. The process method for precision machining of the piston rod part of the aero-engine actuator cylinder comprises the following steps that S1, the piston rod part is roughly turned, a turning tool blade is adopted for turning the outer circle of the piston rod part, the rotating speed of a lathe spindle is 1200 r / min, the feeding amount is 0.1 mm / r, and the back engagement of the cutting edge is 0.2 mm; S2, the piston rod part is subjected to finish turning, the turning tool blade is adopted for turning the outer circle of the piston rod part, the rotating speed of the lathe spindle is 2,000 r / min, the feeding amount is 0.5 mm / r, and the back engagement of the cutting edge is 0 mm; and S3, the piston rod part is machined through Hauck energy, an oblique line feeding mode is adopted, the rotating speed of the lathe spindle ranges from 800 r / min to 1000 r / min, the feeding amount ranges from 0.2 mm / r to 0.25 mm / r, and the back engagement of the cutting edge is 0.4 mm. According to the process method for precision machining of the piston rod part of the aero-engine actuator cylinder, mirror surface machining of the piston rod part can be achieved, and the use reliability and service life of a piston and assemblies are improved.

Description

technical field [0001] The invention relates to the technical field of aero-engine actuators, in particular to a process method for precision machining of piston rods of aero-engine actuators. Background technique [0002] The actuator assembly of a certain type of aero-engine is installed in the high-pressure compressor assembly of the engine, and is connected with the adjustable blade through the control bracket assembly, such as figure 1 As shown, the position and dimensional tolerance requirements of this part are relatively strict, and the steering of the blade is controlled by the transmission of the actuator, so it is very important to ensure the surface quality of the piston in the actuator. [0003] The main processing procedures of the piston rod of the actuator are: rough turning the outer circular end face - fine turning the outer circular end face - grinding - polishing the outer circle, wherein the rough turning and finishing turning are processed on the CNC la...

Claims

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Application Information

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IPC IPC(8): B23B1/00
CPCB23B1/00
Inventor 王长阁马仑金亚洲杨帆马晓薇
Owner SHENYANG LIMING AERO PARTS MFG
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