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Turbine blade positioning jig and tenon machining method

A technology of turbine blades and positioning fixtures, which is applied in metal processing equipment, used abrasive processing devices, manufacturing tools, etc., can solve the problems of low abrasive particle utilization efficiency and poor tenon processing quality, and achieve good grinding effect , Reduce the processing difficulty and ensure the effect of uniformity

Active Publication Date: 2021-01-26
上海尚实航空发动机股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using the abrasive flow process to process the fir tree-shaped tenon of the blade, if the design of the fixture is not reasonable enough, the utilization efficiency of the abrasive grains will be low, and the processing quality of the tenon will be poor

Method used

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  • Turbine blade positioning jig and tenon machining method
  • Turbine blade positioning jig and tenon machining method
  • Turbine blade positioning jig and tenon machining method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A positioning jig for a turbine blade provided in this embodiment, such as figure 1 As shown, it includes a base 10, a blade fixing seat 20 and a guide seat 40, wherein the base 10 is used to be installed on the base of the abrasive particle flow equipment, and the blade fixing seat 20 is arranged on the base 10 for fixing the turbine blade 30, guiding The base 10 is pierced by the seat 40 , and a chamber 50 with both ends open is formed between the guide seat 40 and the blade fixing seat 20 , so that the tenon 31 of the turbine blade 30 is in the chamber 50 . The abrasive particles of the abrasive flow device can pass through the chamber 50 and can grind and shape the tenon 31 , and the tenon 31 has high processing precision.

[0033] In this example, if figure 1 As shown, the base 10 is preferably in the shape of a disc to improve the safety during operation, and the base 10 is provided with a locking groove 11 for locking the blade fixing seat 20 . Further, a plura...

Embodiment 2

[0044] A positioning jig for a turbine blade provided in this embodiment differs from the positioning jig for a turbine blade provided in Embodiment 1 only in that both ends of the base 10 are fixed with a pressure plate 60 (not shown in the figure), Both pressure plates 60 are provided with pressure plate through holes 61, the pressure plate through holes 61 communicate with the chamber 50, and one of the pressure plates 60 is provided with a notch limiter 12, which is used for positioning the jig and clamping it on the grinding wheel. on the base of the particle flow device. At this time, the end surface of the guide seat 40 away from the opening of the engaging groove 11 is not provided with a fixing portion 42, that is, the guide seat 40 and the blade fixing seat 20 are respectively stabilized by the pressure plates 60 at both ends of the base 10 to ensure the machining accuracy of the tenon 31. When the processing of the fixed portion 42 of the guide seat 40 is difficult,...

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Abstract

The invention belongs to the technical field of engines, and discloses a turbine blade positioning jig and a tenon machining method. The turbine blade positioning jig comprises a base provided with aclamping groove, wherein a blade fixing seat is detachably clamped in the clamping groove and is used for fixing a turbine blade; a guide seat is arranged on the base in a penetrating mode, a cavity with openings in the two ends is formed between the guide seat and the blade fixing seat, and a tenon of the turbine blade is located in the cavity. A cavity with the openings in the two ends is formedby the blade fixing seat clamped to the base and the guide sat arranged on the base in the penetrating mode, and the tenon of the turbine blade is located in the cavity. When the positioning jig is applied to an abrasive particle flow process, abrasive particles smoothly and uniformly penetrate through the cavity from top to bottom, the utilization efficiency of the abrasive particles is improved, the grinding uniformity of the tenon is guaranteed, and a good grinding effect is achieved. Besides, the abrasive particle flow process can improve the machining precision of the tenon, improve thepercent of pass of products and further reduce the precision requirement of rough machining of the tenon, more rough machining modes can be adopted for the tenon, and the machining difficulty is reduced.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a positioning jig for turbine blades and a tenon processing method. Background technique [0002] Due to the advantages of high material utilization, light weight, high strength, and insensitivity to thermal stress, the fir tree-shaped tenon is very suitable for high-temperature and high-load working conditions. Therefore, the turbine working blades of gas turbine rotor engines are generally made of fir Tree tenon. However, the fir tree-shaped tenon requires very high machining accuracy, and the traditional ordinary machining is difficult to achieve the required machining accuracy, and the qualified rate of finished products is low. At the same time, due to the complicated structural configuration of the fir tree-shaped tenon, the processing cost is very high. [0003] Abrasive flow is a polishing and deburring process through a semi-fluid medium, which can be used for finishin...

Claims

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Application Information

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IPC IPC(8): B24C3/00B24C9/00
CPCB24C3/00B24C9/00
Inventor 邱国才
Owner 上海尚实航空发动机股份有限公司
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