Method and clamp for moulding surface positioning clamping of finish forge blade

A technology for positioning and clamping and blades, applied in positioning devices, clamping, manufacturing tools, etc., can solve problems such as blade deformation or damage, and achieve the effects of reduced processing time, good fluidity, and good reliability

Active Publication Date: 2014-06-11
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies in the prior art that blades are prone to deformation or damage, the present invention proposes a method for positioning and clamping precision forging blade profiles and its fixtures

Method used

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  • Method and clamp for moulding surface positioning clamping of finish forge blade
  • Method and clamp for moulding surface positioning clamping of finish forge blade
  • Method and clamp for moulding surface positioning clamping of finish forge blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] This embodiment is a method for locating and clamping precision forging blade profiles, and the specific process is:

[0046] Step 1, pretreatment of the glued surface. On the blade pot profile positioning block and the blade back profile clamping block of the fixture, a profile that is offset 2 to 2.5mm outward along the normal direction of the theoretical profile thickness is processed, and the profile surface to be glued Pull hair.

[0047] Step 2, apply glue. Apply TS355 high-precision positioning glue on the profile surface of the blade pot profile positioning block and the blade back profile clamping block of the fixture, and cure it at room temperature for 24 hours. The coating thickness of the high-precision positioning glue is 3.5-4.5 mm. After the high-precision positioning glue is bonded and solidified with the positioning block of the blade basin profile and the clamping block of the blade back profile, the theoretical blade shape of the blade is processe...

Embodiment 2

[0052] This embodiment is a fixture for positioning and clamping the surface of precision forging blades. The clamp adopts a vise structure, including a tray 1, a bottom plate 2, a guide rail 3, a clamping guide block 4, a blade back profile clamping block 5, an edge plate positioning pin 6, a leaf pot profile positioning block 7, and a positioning Pin hole 8, baffle plate 9, clamping nut 10, tension rod 11, air intake side positioning pin 12, limit block 13, cylindrical pin 15, limit pin 16, guide plate 17, spring 18 and compression screw 19 .

[0053] like image 3 As shown, the pallet 1 is the connecting piece between the present embodiment and the machine tool. A bottom plate 2 is attached to the upper surface of the tray 1 . The guide rail 3 is horizontally installed at the center of the upper surface of the base plate 2, and the centerline of the length direction of the guide rail 3 is perpendicular to the main shaft of the machine tool; the guide rail groove of the g...

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Abstract

The invention relates to a method and a clamp for moulding surface positioning clamping of a finish forge blade. According to the method, a vane is subjected to positioning clamping through a basin mounding surface of the blade, an inner side moulding surface of a blade root marginal plate, and a V point on the inner side mounting surface of the blade root marginal plate, by the positioning of an air inlet edge, and the clamping of a back mounding surface of the blade, as well as by using a high-accuracy positioning adhesive, and an adhesive coating method, and through a positioning block of the basin moulding surface of the blade and a clamping block of the back moulding surface of the blade. According to the method and the clamp, a satisfying contact area can be obtained by adoption of the high-accuracy adhesive, and the positioning rigidity of the blade is enhanced by adoption of the basin moulding surface of the blade, the inner side moulding surface of the blade root marginal plate and the V point on the inner side moulding surface of the blade root marginal plate for the positioning. According to the method and the device, the problems that the accurate positioning is difficult to realize and the moulding surface of the blade deforms or is damaged because the blade is thin, the blade body is small and the moulding surface is complex are solved. By the method and the device, the positioning accuracy of the mechanical processing of the blade is improved, and the technological process is optimized, so that the processing quality and the production efficiency of the blade are improved, the process is simple, the number of fixtures is reduced, the processing cycle is shortened, and the production cost is reduced.

Description

technical field [0001] The invention is used for machining precision forging blades of aero-engines. Background technique [0002] At present, the positioning and clamping of the precision forging blade machining of domestic aero-engines is difficult to accurately locate due to the lack of margin on the blade body profile and the inner profile of the edge plate, the small blade body, the thin blade, and the complex profile, which is easy to cause the blade profile Deformation or damage, the low melting point alloy casting box positioning method is often used. In this method, the coordinate datum formed after precision forging of the blade is converted into a plane datum, and then machining is carried out to ensure the relative torsion and offset between the tenon and the airfoil profile. Because the blank material tolerance of the blade occupies part of the design tolerance, there is a conversion between the positioning reference of the blade and the positioning reference o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q3/00
Inventor 刘秀梅刘智武张武刚余杰赵赟陈琦
Owner AECC AVIATION POWER CO LTD
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