CN219684670U

CN219684670U - Mechanism for clamping blank in aircraft part machining

Info

Publication number: CN219684670U
Application number: CN202320994469.6U
Authority: CN
Inventors: 刘奇; 黎世卿
Original assignee: Sichuan Chengfei Integration Technology Co ltd
Current assignee: Sichuan Chengfei Integration Technology Co ltd
Priority date: 2023-04-27
Filing date: 2023-04-27
Publication date: 2023-09-15
Anticipated expiration: 2033-04-27

Abstract

The utility model provides a mechanism for clamping a blank in aircraft part machining, relates to the technical field of clamping tools, and solves the problems of poor fixing effect and high machining cost of the blank in the prior art. The clamping assembly comprises clamping pieces in contact with the side walls of the workblank and a fixing mechanism for fixing the clamping pieces on the worktable, wherein the end faces of the clamping pieces in contact with the workblank are inclined planes, the side walls of the workblank are provided with sloping surfaces matched with the inclined planes, and the end faces of the clamping pieces in contact with the workblank are inclined towards the direction of the workblank. The blank is clamped by the two groups of clamping assemblies, the inclined plane arranged on the end face of the clamping piece of the clamping assembly is matched with the inclined plane of the blank, the blank is fixed in the vertical direction when being transversely clamped and fixed, so that the transverse and vertical fixing of the blank is realized, the fixing effect of the blank is guaranteed, and the clamping assembly is simple in structure and effectively reduces the processing cost.

Description

Mechanism for clamping blank in aircraft part machining

Technical Field

The utility model relates to the technical field of clamping tools, in particular to a mechanism for clamping blanks in aircraft part machining.

Background

In the field of aerospace manufacturing, a large number of metal part raw material blanks adopt blocky pre-stretching plates, and the blanks need to be fixed on a machine tool during machining.

The metal part can generate larger cutting force during machining, and the metal part blank is required to be stably fixed on a machine tool. The conventional clamping tool adopts two clamping arms capable of relatively moving to carry out abutting fixation on the side wall of a blank, for example, as shown in fig. 4, the blank 2 'is placed on a workbench 1', one side of the blank 2 'abuts against a stop block 8', the other side of the blank 2 'is provided with a fixed block 10', a pushing screw 9 'transversely penetrates through the fixed block 10' and abuts against the side wall of the blank 2 ', so that the clamping fixation of the blank 2' is realized, the fixed block 10 'and the pushing screw 9' can be replaced by a cylinder transmission mechanism, and the blank can be displaced in the vertical direction in the cutting process in the clamping fixation mode, so that the machining precision is affected; and in order to solve the not good problem of fixed effect, can adopt the special fixture of global design, can solve the fixed problem of blank, but global design's special fixture cost is very high, and the commonality is poor, if: a vice, a special holding tool and the like, wherein the vice clamping mode is suitable for small-size (the outline size is less than 500 mm) workblank processing which is more regular, and the vice with large size is required to be used for clamping the workblank with large size, so that the cost is increased; the special fixing tool also needs to process a specific blank, and has a small application range. Therefore, a fixing mode which is low in cost, convenient to use, stable and reliable in fixing and high in universality is needed, and the processing cost of aircraft parts is reduced.

Disclosure of Invention

The utility model aims to solve the problems, and provides a mechanism for clamping a blank in the processing of an aircraft part, which is characterized in that two groups of clamping assemblies are arranged to clamp the blank, the inclined planes arranged on the end faces of the clamping members of the clamping assemblies are matched with the inclined planes of the blank, and the blank is fixed in the vertical direction while being transversely clamped and fixed, so that the transverse and vertical fixing of the blank is realized, the fixing effect of the blank is ensured, the structure of the clamping assemblies is simple, and the processing cost can be effectively reduced.

The embodiment of the utility model is realized by the following technical scheme:

the utility model provides a mechanism for centre gripping blank in aircraft parts processing, includes at least two sets of relative motion and sets up the clamping assembly on the workstation, the clamping assembly include with the clamping piece of blank lateral wall contact and fix the fixed establishment on the workstation with the clamping piece, the terminal surface that the clamping piece contacted with the blank is the inclined plane, the blank lateral wall be provided with the domatic of inclined plane adaptation, the terminal surface that the clamping piece contacted with the blank is inclined to the direction of blank.

Preferably, the end face of the clamping piece, which contacts the blank, is inclined towards the blank.

Preferably, when the two groups of clamping assemblies clamp the blank, the bottoms of the blank are abutted on the workbench.

Preferably, the clamping assembly is detachably connected with the workbench through a fixing mechanism.

Preferably, the fixing mechanism comprises a screw rod vertically penetrating through the clamping piece and connected with the workbench, in two groups of clamping components moving relatively, one group of clamping components is provided with a strip-shaped through groove extending along the moving direction of the clamping piece, the upper end face of the clamping piece is provided with an inclined sliding surface, a compression block is arranged on the inclined sliding surface in a sliding manner, and the screw rod penetrates through the clamping piece through the strip-shaped through groove and then is connected with the compression block.

Preferably, in the two sets of clamping assemblies moving relatively, the clamping members of the other set of clamping assemblies are locked and fixed on the workbench through screw rods.

Preferably, the clamping member and the pressing block are made of wear-resistant materials.

Preferably, the screw is sleeved with a nut which is abutted with the lower surface of the workbench.

Preferably, the nut is a T-nut.

Preferably, the workbench is vertically provided with a plurality of through holes for the screw rod to penetrate along the moving direction of the clamping piece.

Preferably, the through holes are equidistantly arranged along a direction perpendicular to the moving direction of the clamping member.

The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:

the blank is clamped by the two groups of clamping assemblies, the inclined plane arranged on the end face of the clamping piece of the clamping assembly is matched with the inclined plane of the blank, the blank is fixed in the vertical direction when being transversely clamped and fixed, so that the blank is transversely and vertically fixed, the fixing effect of the blank is guaranteed, and the clamping assembly is simple in structure and can effectively reduce the processing cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a front view cross-section structure according to an embodiment of the present utility model;

fig. 2 is a schematic structural view of a blank provided by an embodiment of the present utility model without abutting against a workbench;

FIG. 3 is a schematic top view of an embodiment of the present utility model;

fig. 4 is a schematic diagram of a prior art structure of the present utility model.

Icon: 1-a workbench; 2, blank; 3-a screw; 4-clamping members; 5-nuts; 6-strip-shaped through grooves; 7-compacting blocks; 8-a stop block; 9-pushing the screw; 10-fixed block.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The present utility model is described in detail below with reference to fig. 1-4.

Examples

The utility model provides a mechanism for centre gripping blank in aircraft parts processing, includes at least two sets of relative motion and sets up the clamping assembly on workstation 1, the clamping assembly includes the clamping piece 4 with the contact of blank 2 lateral wall and fixes the fixed establishment on workstation 1 with clamping piece 4, the terminal surface that clamping piece 4 contacted with blank 2 is the inclined plane, and blank 2 lateral wall is provided with the domatic with the inclined plane adaptation, the terminal surface that clamping piece 4 contacted with blank 2 is inclined to the direction of blank 2.

The clamping piece 4 is moved to enable the end face of the clamping piece 4 to be abutted against the slope surface of the blank 2, and the force generated by the clamping piece 4 on the blank 2 forces the blank 2 to move transversely and vertically; as shown in fig. 1, the end surface of the clamping piece 4, which is in contact with the blank 2, is inclined towards the direction of the blank 2, the blank 2 is displaced downwards after being extruded, the blank 2 is abutted on the workbench 1 or the protruding part of the upper end of the slope of the blank 2 as shown in fig. 2 is abutted on the clamping piece 4, and the blank 2 is limited to be separated from the clamping piece 4, so that the position of the blank 2 is fixed in the transverse direction and the vertical direction.

As shown in fig. 2, when two groups of clamping assemblies clamp the blank 2, the protruding part at the upper end of the slope of the blank 2 abuts against the clamping piece 4 to limit the blank 2 to move downwards, and in order to ensure the tight abutting between the protruding part and the clamping piece 4, a groove needs to be formed in the workbench 1 to avoid the contact between the blank 2 and the workbench 1, and the operation is troublesome, so that the blank 2 is directly abutted against the workbench 1, and the movement limitation of the blank 2 is realized.

The clamping assembly is detachably connected with the workbench 1 through the fixing mechanism, and can be detached from the workbench 1, so that new parts can be replaced, and the maintenance is convenient.

The fixing mechanism can adopt a conventional transverse pushing structure as shown in fig. 4, a fixing block 10 ' is arranged on the workbench 1 ', a pushing screw 9 ' transversely penetrates through the fixing block 10 ' in a threaded manner, the end part of the pushing screw 9 ' is rotatably connected with the clamping piece 4, and the clamping piece 4 is abutted against the side wall of the blank 2 ' through the screwing force of the pushing screw 9 '. In the structure, the pushing screw 9 ' needs to be rotated, and the pushing screw 9 ' needs to be at a certain height from the workbench 1 ', so that the pushing screw 9 ' is convenient to rotate, and for blanks 2 ' with smaller thickness, the height of the pusher screw 9 "and the clamping member 4 will protrude above the upper surface of the blank 2", thereby affecting the upper surface cutting process of the blank 2", and thus not being suitable for the processing of the blank 2" having a small thickness.

In order to meet the machining of blanks 2 with different sizes, the screw 3 is vertically arranged, and the concrete structure is as follows: the fixing mechanism comprises a screw rod 3 vertically penetrating through the clamping piece 4 and connected with the workbench 1, and in two groups of clamping components which move relatively, a strip-shaped through groove 6 extending along the moving direction of the clamping piece 4 of one group of clamping components is formed in the clamping piece 4, an inclined sliding surface is arranged on the upper end face of the clamping piece 4, a compression block 7 is arranged on the inclined sliding surface in a sliding mode, and the screw rod 3 penetrates through the clamping piece 4 through the strip-shaped through groove 6 and then is connected with the compression block 7.

The screw 3 is movably penetrated through the clamping member 4 and the pressing block 7, and when the screw 3 is screwed down, the pressing block 7 is tightly attached to the inclined sliding surface and forces the clamping member 4 to move towards the blank 2, thereby clamping the blank 2.

In the two groups of clamping assemblies which move relatively, the clamping piece 4 of the other group of clamping assemblies is locked and fixed on the workbench 1 through the screw 3. The two groups of clamping assemblies are all arranged in a structure capable of transversely moving or one group of clamping assemblies is fixed, and the other group of clamping assemblies can transversely move. In order to reduce the working strength of the clamping assembly operation, it is preferable that one set of clamping assemblies is fixed and the other set of clamping assemblies is arranged in a laterally movable manner.

The clamping member 4 and the pressing block 7 generate sliding friction, and in order to prolong the service lives of the clamping member 4 and the pressing block 7, the clamping member 4 and the pressing block 7 are made of wear-resistant materials.

The screw 3 can be screwed by adopting a mode including but not limited to a nut 5, and the nut 5 is sleeved on the screw 3 and is abutted against the lower surface of the workbench 1; screw holes can be formed in the workbench 1, the screw 3 is screwed into the screw holes, and the screw 3 is screwed.

When the nut 5 is adopted, the nut 5 is set to be a T-shaped nut, so that the contact area between the nut 5 and the workbench 1 is reduced, the rotating friction force required to rotate after abutting is reduced, and the tightening degree of the screw 3 is improved.

The workbench 1 is vertically provided with a plurality of through holes for the screw rods 3 to penetrate along the moving direction of the clamping pieces 4, the screw rods 3 penetrate through the through holes and then are fixed by using nuts 5 or the screw rods 3 are directly connected with the through holes in a threaded mode, and the distance between the two clamping pieces 4 can be adjusted according to the size of the blank 2, so that the application range of the utility model is increased. After the through holes are equidistantly arranged along the vertical direction of the moving direction of the clamping pieces 4, the clamping pieces 4 with different numbers can be installed according to the requirements, so that the blanks 2 with different sizes can be conveniently clamped.

The application method of the mechanism for clamping the blank in the processing of the aircraft part comprises the following steps:

1. confirming the clamping position and the clamping point of the blank 2 during process design;

2. machining the side wall of the blank 2 into a slope by using a forming cutter;

3. a clamping piece 4 with proper height is selected according to the thickness of the blank 2, and the clamping piece 4 is arranged on the workbench 1 through the matching of the screw 3 and the nut 5 by the clamping piece 4;

4. one sloping surface of the blank 2 is abutted on one group of fixed clamping pieces 4, the other group of clamping pieces 4 is moved to be abutted against the blank 2, and finally nuts 5 are screwed down to enable the two groups of clamping pieces 4 to clamp and fix the blank 2.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a mechanism for centre gripping blank in aircraft parts processing, includes two at least groups relative motion and sets up the clamping assembly on workstation (1), its characterized in that, clamping assembly includes clamping piece (4) with blank (2) lateral wall contact and fixes clamping piece (4) fixed establishment on workstation (1), the terminal surface that clamping piece (4) contacted with blank (2) is the inclined plane, blank (2) lateral wall be provided with the slope of inclined plane adaptation, the terminal surface that clamping piece (4) contacted with blank (2) is inclined to the direction of blank (2).

2. A mechanism for clamping a blank in the machining of aircraft parts according to claim 1, characterized in that the bottom of the blank (2) abuts against the table (1) when the two sets of clamping assemblies clamp the blank (2).

3. A mechanism for clamping blanks in aircraft parts machining according to claim 1, wherein the clamping assembly is detachably connected to the table (1) by a fixing mechanism.

4. A mechanism for clamping blanks in aircraft parts machining according to claim 3, characterized in that the fixing mechanism comprises a screw (3) vertically penetrating through the clamping members (4) and connected with the workbench (1), and in two groups of clamping components moving relatively, one group of clamping members (4) of the clamping components is provided with a strip-shaped through groove (6) extending along the moving direction of the clamping members, the upper end face of the clamping members (4) is provided with an inclined sliding surface, a compression block (7) is slidably arranged on the inclined sliding surface, and the screw (3) penetrates through the clamping members (4) through the strip-shaped through groove (6) and then is connected with the compression block (7).

5. A mechanism for clamping blanks in the machining of aircraft parts according to claim 4, characterized in that, in the two sets of clamping assemblies which move relative to each other, the clamping members (4) of the other set of clamping assemblies are fastened to the table (1) by means of screws (3).

6. A mechanism for clamping blanks in aircraft parts machining according to claim 4, wherein the clamping members (4) and the hold-down blocks (7) are made of wear resistant material.

7. A mechanism for clamping blanks in the processing of aircraft parts according to claim 4, characterized in that the threaded spindle (3) is provided with a nut (5) in abutment with the lower surface of the table (1).

8. A mechanism for clamping blanks in the machining of aircraft parts according to claim 7, characterized in that the nut (5) is a T-nut.

9. A mechanism for clamping blanks in aircraft parts machining according to claim 4, characterized in that the table (1) is vertically provided with a plurality of through holes for the threaded rods (3) to pass through along the moving direction of the clamping members (4).

10. A mechanism for clamping blanks in the machining of aircraft parts according to claim 9, characterized in that the through holes are equally spaced along the direction perpendicular to the direction of movement of the clamping member (4).