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CN-122008571-A - Cementing positioning tool for distance blade bushing

CN122008571ACN 122008571 ACN122008571 ACN 122008571ACN-122008571-A

Abstract

The application relates to the technical field of assembly tools for aviation manufacturing, in particular to a cementing positioning tool for a distance blade bushing, which comprises a positioning base, a plurality of positioning pins, a pressing mechanism and a demoulding structure. The positioning tool with compact structure and standardized operation flow solves the problems of one-by-one positioning and easy offset in the traditional method, can remarkably improve the gluing coaxiality and the position accuracy, greatly improve the batch production efficiency, reduce the dependence on the skill of operators, and has the advantages of repeated use, long service life and low comprehensive cost.

Inventors

  • LU ZHAOPENG
  • ZANG ZHIYONG
  • HAN DONGHUA
  • ZHANG MENGXIAO

Assignees

  • 惠阳航空螺旋桨有限责任公司

Dates

Publication Date
20260512
Application Date
20260211

Claims (10)

  1. 1. The utility model provides a cementing positioning tool of distance paddle bush, includes paddle body (2), there is a plurality of mounting holes that are used for installing metal bush (4) in the central region department of paddle body (2), its characterized in that still includes: The positioning base (1) is provided with a positioning structure matched with the central area of the blade body (2), and a plurality of positioning through holes are also formed in the positioning structure and correspond to the mounting holes one by one; The blade body (2) is connected with the positioning base (1) in a positioning way through the positioning pins (3), and the metal bushing (4) is sleeved on the positioning pins (3); The compressing mechanism is screwed on one end of the positioning pin (3) and is used for compressing and fixing the metal bushing (4) sleeved on the positioning pin (3); And the demolding structure is arranged at the bottom of the positioning base (1) and is used for ejecting and separating the blade body (2) after the bonding and solidification from the positioning base (1).
  2. 2. The glue joint positioning tool of a distance blade bushing according to claim 1, characterized in that the positioning structure is a sinking groove arranged on the upper surface of the positioning base (1), the contour of the sinking groove is matched with the convex contour of the central area of the blade body (2), and the periphery of the sinking groove is also provided with a guiding inclined plane.
  3. 3. The cementing positioning tool for distance blade bushings according to claim 2, wherein the positioning through hole is a round hole, and one end of the positioning pin (3) is fixedly inserted into the positioning through hole.
  4. 4. The cementing positioning tool for distance blade bushings according to claim 2, characterized in that the positioning through hole is a special-shaped hole, and one end of the positioning pin (3) is detachably inserted into the positioning through hole after penetrating through the mounting hole.
  5. 5. The cementing positioning tool of a distance blade bushing according to claim 4, wherein the positioning pin (3) is of a stepped shaft structure, and one end of the positioning pin, which is spliced with the positioning through hole, is of a polygonal structure matched with the positioning through hole; The step surface of the locating pin (3) is used for abutting against the lower surface of the locating base (1).
  6. 6. Glue joint positioning tool of distance blade bushing according to claim 1, characterized in that the hold-down mechanism comprises washers (5) and lock nuts (6) corresponding to the number of the positioning pins (3), the top end of the positioning pins (3) is further provided with external threads, and the lock nuts (6) cooperate with the external threads to hold down the metal bushing (4) in the blade body (2).
  7. 7. The glue joint positioning tool of a distance blade bushing according to claim 1, wherein the demoulding structure comprises: The pushing plate (7) is movably accommodated in an accommodating hole formed in the center of the positioning base (1); The ejection piece is rotatably arranged on the positioning base (1), the top end of the ejection piece is propped against the bottom of the push plate (7) and used for driving the push plate (7) to vertically displace in the accommodating hole so as to push the blade body (2).
  8. 8. The gluing positioning tool of distance blade bushings according to claim 1, characterized in that a glue overflow groove is formed in the positioning base (1) at the joint surface corresponding to the metal bushing (4).
  9. 9. Glue joint positioning tool for distance blade bushings according to claim 1, characterized in that the outer diameter of the positioning pin (3) is in clearance fit with the inner diameter of the metal bushing (4), and the surfaces of the positioning base (1) and the positioning pin (3) are provided with wear-resistant and/or rust-resistant coatings.
  10. 10. Bushing gluing method of a glue positioning tool for distance blade bushings according to any of the claims 1-9, characterized by comprising: Positioning and mounting the blade body (2) on a positioning structure of the positioning base (1), and enabling each positioning pin (3) to penetrate through each mounting hole formed in the blade body (2); after the adhesive is coated on the outer surface of the metal bushing (4), the metal bushing is sleeved on the corresponding positioning pin (3), and the metal bushing is gradually pushed into the corresponding mounting hole under the guiding of the positioning pin (3); the metal bushings (4) are pressed and fixed through pressing mechanisms; curing the adhesive by curing equipment; After solidification, the blade body (2) with the glued and fixed metal bushing (4) is ejected out of the positioning base (1) through the operation demoulding structure, and the gluing is completed.

Description

Cementing positioning tool for distance blade bushing Technical Field The application relates to the technical field of assembly tools for aviation manufacturing, in particular to a cementing positioning tool for a distance blade bushing. Background Tiltrotor aircraft is an aircraft with both helicopter flexibility and fixed wing aircraft high speed, and the fixed-pitch blades of one of the core components are usually made of composite materials. The center of the distance blade is provided with a plurality of (usually 8) mounting holes for mounting the connecting pieces, and metal bushings for improving the wear resistance and the connection strength are glued in the holes. In the existing gluing process, positioning and gluing are mainly performed manually. However, the method has the defects that firstly, the position degree among a plurality of bushings and the coaxiality among the bushings and the mounting holes are difficult to ensure by purely manual positioning, the precision is low, the bushings are easy to deviate in the gluing process, the subsequent assembly quality and the dynamic balance performance of the blade are influenced, and secondly, the traditional manual gluing method often needs manual alignment and fixation one by one, has complex operation, high labor intensity and is difficult to realize high-efficiency production in batches. Therefore, there is a need for a cementing positioning tool with simple structure, precise positioning and convenient operation, so as to improve the cementing quality and the production efficiency of the metal bushing. Disclosure of Invention The application provides a cementing positioning tool for a distance blade bushing, which is used for solving the problems of low positioning precision, complex operation and low efficiency of a traditional cementing mode in the prior art. The application provides a cementing positioning tool for spacing blade bushings, which comprises a blade body, wherein a plurality of mounting holes for mounting metal bushings are formed in the central area of the blade body, and the cementing positioning tool further comprises: The positioning base is provided with a positioning structure matched with the central area of the blade body, the positioning structure is also provided with a plurality of positioning through holes, and the positioning through holes correspond to the mounting holes one by one; The blade body is connected with the positioning base in a positioning way through the positioning pins, and the metal bushing is sleeved on the positioning pins; The compressing mechanism is screwed on one end of the locating pin and used for compressing and fixing the metal bushing sleeved on the locating pin; and the demolding structure is arranged at the bottom of the positioning base and is used for ejecting and separating the blade body and the positioning base after the bonding and solidification. Preferably, the positioning structure is a sinking groove formed in the upper surface of the positioning base, the outline of the sinking groove is matched with the convex outline of the central area of the blade body, and a guiding inclined plane is further arranged on the periphery of the sinking groove. Preferably, the positioning through hole is a round hole, and one end of the positioning pin is fixedly inserted into the positioning through hole. Preferably, the positioning through hole is a special-shaped hole, and one end of the positioning pin penetrates through the mounting hole and then is detachably inserted into the positioning through hole. Preferably, the positioning pin is of a stepped shaft structure, and one end of the positioning pin, which is spliced with the positioning through hole, is of a polygonal structure matched with the positioning through hole; the step surface of the locating pin is used for being abutted with the lower surface of the locating base. Preferably, the compressing mechanism comprises washers and locking nuts, the number of the washers and the locking nuts corresponds to that of the locating pins, external threads are further arranged at the top ends of the locating pins, and the locking nuts are matched with the external threads to compress the metal bushings in the blade body. Preferably, the demolding structure includes: The pushing plate is movably accommodated in an accommodating hole formed in the center of the positioning base; The ejection piece is rotatably arranged on the positioning base, the top end of the ejection piece is propped against the bottom of the push plate and is used for driving the push plate to vertically displace in the accommodating hole so as to push the blade body. Preferably, the adhesive overflow groove is formed in the position, corresponding to the joint surface of the metal bushing, on the positioning base. Preferably, the outer diameter of the positioning pin is in clearance fit with the inner diameter of the metal bushing, and the surfaces of the positio