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Adjustable clamp used for numerical control machining of helicopter composite material rotor blade

A technology for rotor blades and composite materials, which is used in manufacturing tools, metal processing equipment, metal processing mechanical parts, etc., can solve problems such as internal defects and difficulty in guaranteeing blade processing accuracy, avoid defects or damage, and reduce clamping. Stress, the effect of improving versatility

Active Publication Date: 2013-09-25
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defects of the prior art, especially the problem that the processing accuracy of the helicopter composite blade caused by clamping is difficult to guarantee and internal defects are easily produced

Method used

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  • Adjustable clamp used for numerical control machining of helicopter composite material rotor blade
  • Adjustable clamp used for numerical control machining of helicopter composite material rotor blade
  • Adjustable clamp used for numerical control machining of helicopter composite material rotor blade

Examples

Experimental program
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Effect test

Embodiment Construction

[0035] Such as figure 1 An adjustable clamp for CNC machining of helicopter composite rotor blades is shown, including: a front end clamping unit 1 for clamping the front end of the rotor blade, and a middle clamping unit for clamping the middle blade body of the rotor blade 2 and a tail clamping unit 3 for clamping the tail end of the rotor blade;

[0036] Such as figure 2 The front-end clamping unit 1 shown includes: U-shaped bracket I1.1, positioning pin 1.2; the two parallel walls of U-shaped bracket I1.1 are processed with through holes for the positioning pin 1.2 to be inserted and positioned, and the length of the positioning pin 1.2 is greater than U The space between the two parallel walls of the bracket I1.1; the positioning pin 1.2 is radially processed with a shoulder, and the U-shaped bracket I1.1 and the upper shaft shoulder of the positioning pin 1.2 are fixed on the inner side of the parallel wall with a pin sleeve 1.3, that is, the positioning pin 1.2 The e...

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Abstract

The invention discloses an adjustable clamp used for numerical control machining of a helicopter composite material rotor blade. The adjustable clamp comprises a front end clamping unit, a middle clamping unit and a tail end clamping unit, wherein the front end clamping unit is used for clamping the front end of the rotor blade, the middle clamping unit is used for clamping a middle blade body of the rotor blade, and the tail clamping unit is used for clamping the tail end of the rotor blade. The front end clamping unit is fixedly matched with a rotor blade predrilled hole through a pin structure with a self installation connecting hole of the rotor blade as the locating basis, discrete multipoint clamping is adopted for the middle clamping unit and the tail clamping unit with the profile of the rotor blade as the locating basis, and clamping states of the clamp are adjusted through an adjustable clamping rod. By the adoption of the technical scheme, high-reliability clamping of the numerical control machining of the composite material rotor blade is achieved, occurrence probability of machining errors, defects and injuries due to the clamping is effectively reduced, meanwhile the generality of the clamp is improved, and production cost is reduced.

Description

technical field [0001] The invention relates to the field of fixtures, in particular to a fixture for numerically controlled machining of helicopter composite material rotor blades. Background technique [0002] The blade is the key component of the helicopter, which determines the main performance of the helicopter. Because composite materials have many characteristics such as high specific strength, specific stiffness, and designability, and the traditional metal forming process is difficult to meet the requirements of complex geometric shapes and dimensions of high-performance blades, composite materials gradually replace metal, wood and other materials as modern helicopter blades. The main material used for leaves. The main advantage of the composite material blade is its long fatigue life, and its integrated design and manufacturing characteristics can significantly promote the dynamic performance of the blade, which ideally meets the performance requirements of the he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/06
CPCB23Q3/063
Inventor 高航吴茂庆王奔贾振元宋文娟孙伟
Owner DALIAN UNIV OF TECH