CN213703122U

CN213703122U - Positioning bush anti-falling device for aluminum alloy positioning piece

Info

Publication number: CN213703122U
Application number: CN202022069762.0U
Authority: CN
Inventors: 邹秋芽; 刘剑超; 张伟; 王波; 王梅
Original assignee: AVIC Shaanxi Aircraft Industry Group Corp Ltd
Current assignee: AVIC Shaanxi Aircraft Industry Group Corp Ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-07-16
Anticipated expiration: 2030-09-18

Abstract

The utility model discloses an aluminum alloy is positioning bush anticreep device for setting element belongs to aviation manufacturing process and equips technical field. The device main part is the baffle, has a plurality of screw through holes and with the same of positioning bush quantity and be greater than the through-hole that positioning bush internal diameter is less than the positioning bush external diameter on the baffle, is fixed in the both sides of setting element through the screw with the baffle, makes it keep off positioning bush and setting element in, and positioning bush can only take place slight cluster along the axial under the exogenic action. The bushing mounting bottom hole is well protected, the repair times of technological equipment are reduced, and the smooth assembly of products is guaranteed.

Description

Positioning bush anti-falling device for aluminum alloy positioning piece

Technical Field

The utility model belongs to the technical field of the aeronautical manufacturing process equips, a be used for technological equipment to go up positioning bush anticreep device for aluminum alloy setting element is related to.

Background

In order to reduce the inconvenience brought to operating workers by the fact that the technical equipment is too heavy in the using process, most positioning pieces in the technical equipment are made of aluminum alloy, and in order to prevent positioning holes in the aluminum alloy positioning pieces from being abraded or damaged in the using process, steel bushings are required to be pressed into installation positioning holes in the aluminum alloy positioning pieces to protect the positioning holes. Because of the existence of product manufacturing deviation and connection deformation, the positioning piece on the tooling also needs to be installed in place by means of external force, namely, the positioning pin for fixing the positioning piece is knocked out or knocked in by means of the external force, because the materials of the bushing and the positioning piece are different, and the expansion amount after being influenced by temperature is also different, the interference between the bushing and the positioning piece is changed, because the height of the bushing is less than about 2mm of the thickness of the positioning piece, the steel bushing can move along the axial direction, the bushing installation bottom hole is enlarged and damaged after a long time, the bushing can not be fixed in the positioning piece any more, at the moment, the bushing installation bottom hole needs to be reamed, and the new bushing with the same size as the bottom hole is pressed in again, the condition usually happens in the product assembling process, thereby causing unnecessary waiting due to the repair of process equipment and influencing the product, and also caused the frock material object and the drawing not to accord, for follow-up setting element repair can't use according to the drawing and buried the hidden danger, caused unnecessary waste, and this structure does not protect the side of setting element, accelerated the wearing and tearing speed of setting element thickness direction, and because this structure in positioning support and the location cardboard be such a cooperation relation for H8 and f7, lead to the requirement of location cardboard thickness size precision very high, need the higher lathe of precision to process it, improved manufacturing cost.

SUMMERY OF THE UTILITY MODEL

1. Solves the technical problem

The utility model provides an among the prior art bush bottom hole life-span short, setting element thickness size precision should not guarantee and the easy technical problem that wears out of setting element side, has prolonged the life of frock, has improved the stability of frock, has reduced the maintenance cost.

2. Technical scheme

The utility model provides a bush anti-falling device, which comprises a support, a positioning bolt, a positioning piece, a positioning bush, a baffle plate and a screw; the baffle is provided with a plurality of screw through holes and through holes which are the same as the positioning bushings in number and have the inner diameters larger than the inner diameters of the positioning bushings and the outer diameters smaller than the outer diameters of the positioning bushings, the through holes are tightly connected with two side faces of the positioning piece through screws, the positioning bushings are connected with the positioning piece through interference fit, the height of the positioning pieces is consistent with the thickness of the corresponding positions of the positioning piece, the thickness of the baffle is adjusted after the positioning pieces are assembled, the positioning pieces and the support middle grooves are enabled to form the H8/f7 matching relation, and the positioning pieces are.

3. Advantageous effects

The utility model provides a bush anticreep device, bear under the condition of applied axial force and do not take place to drop or obvious axial motion at the bush, better protection bush installation bottom hole, the number of times of reprocessing of technology equipment has been reduced, the smooth assembly of product has been guaranteed, the stability of frock precision has been improved, the maintenance cost of technology equipment has been reduced, and the setting element is adjusted through adjusting the thickness of baffle plate with the cooperation of support, thereby can reduce the processing degree of difficulty of setting element, the baffle separates support and setting element, the wearing and tearing of setting element side have been stopped, the service life of setting element has been improved, thereby manufacturing cost has also been reduced.

Drawings

The utility model comprises 3 drawings, the drawings and the description of the drawings are as follows:

FIG. 1 is a schematic structural view of the utility model;

figure 2 is a side view of the present invention,

FIG. 3 is a detailed view of zone A of FIG. 1;

wherein: 1. the device comprises a baffle, 2 parts of a positioning piece, 3 parts of screws, 4 parts of a positioning bush, 5 parts of a baffle and 6 parts of screws.

Detailed Description

The anti-falling device of the bush is explained in detail with the attached drawings:

the utility model provides a bush anti-falling device, which comprises a support (1), a positioning bolt (2), a positioning piece (3), a positioning bush (4), a baffle plate (5) and a screw (6); wherein, baffle (5) have a plurality of screw clearing hole and with positioning bushing (4) quantity the same and be greater than positioning bushing (4) internal diameter and be less than the through-hole of positioning bushing (4) external diameter, and closely link to each other through the both sides face of screw (6) with setting element (3), positioning bushing (4) link to each other with setting element (3) through interference fit, and its height is unanimous with the thickness of setting element (3) relevant position department, guarantees through adjusting the thickness of baffle plate after the equipment that setting element (3) and support (1) well form the cooperation relation in clearance, and rethread positioning bolt (2) are fixed with it.

The hardness of the baffle (5) is not more than that of the support (1) so as to prevent abrasion to the support (1).

The periphery of the baffle (5) is provided with chamfered angles, so that the positioning piece (3) and the support (1) can be conveniently and quickly aligned.

The thickness of the baffle (5) is determined through field repair, so that the matching relation of the clearance between the positioning piece (3) and the groove in the support (1) is guaranteed.

The end part of the positioning bolt (2) is provided with a certain taper so as to facilitate guiding and quick installation of the positioning bolt (2).

The thickness of the positioning bush (4) is close to that of the positioning piece (3) so as to reduce the movable space of the positioning bush (4) in the positioning piece (3).

And a mooring rope mounting hole is formed in the positioning bolt (2) to prevent the positioning bolt (2) from being lost.

Adopt the utility model provides a structure does not take place to drop or obvious axial motion under the condition that the bush bore applied axial force, the better bush installation bottom hole of having protected, the number of times of reprocessing of technological equipment has been reduced, the smooth assembly of product has been guaranteed, the stability of frock precision has been improved, the maintenance cost of technological equipment has been reduced, and the setting element is adjusted through adjusting the thickness of keeping off the plate with the cooperation of support moreover, thereby can reduce the processing degree of difficulty of setting element, the service life of setting element has been improved, the production cost is effectively reduced.

Claims

1. The utility model provides an aluminum alloy is positioning sleeve anticreep device for setting element which characterized in that: comprises a support (1), a positioning bolt (2), a positioning piece (3), a positioning bush (4), a baffle (5) and a screw (6); wherein, be equipped with a plurality of screw clearing hole on baffle (5), still be equipped with simultaneously and be greater than the through-hole that positioning bushing (4) internal diameter is less than positioning bushing (4) external diameter with positioning bushing (4) quantity the same, baffle (5) closely link to each other through the both sides face of screw (6) with setting element (3), positioning bushing (4) link to each other with setting element (3) through interference fit, and its height is unanimous with the thickness of setting element (3) relevant position department, guarantees the cooperation relation in setting element (3) and support (1) mesoslot formation clearance through the thickness of adjusting the baffle (5) after the equipment, and rethread positioning pin (2) are fixed it.

2. The bushing run-off prevention device according to claim 1, wherein: the hardness of the baffle (5) is not more than that of the support (1).

3. The bushing run-off prevention device according to claim 1, wherein: and chamfered angles are arranged around the baffle (5).

4. The bushing run-off prevention device according to any one of claims 1 to 3, wherein: the thickness of the baffle (5) is determined by field repair.

5. The bushing run-off prevention device according to claim 1, wherein: the end part of the positioning bolt (2) is provided with a certain taper so as to facilitate guiding and quick installation of the positioning bolt (2).

6. The bushing run-off prevention device according to claim 1, wherein: the thickness of the positioning bush (4) is close to that of the positioning piece (3).

7. The bushing run-off prevention device according to claim 1, wherein: and the positioning bolt (2) is provided with a mooring rope mounting hole.