CN112893757A

CN112893757A - Rivet dismounting device

Info

Publication number: CN112893757A
Application number: CN201911134385.XA
Authority: CN
Inventors: 曾敬山; 刘岩岩; 张会清; 沈冰峰; 孙宗乾
Original assignee: Commercial Aircraft Corp of China Ltd; Shanghai Aircraft Manufacturing Co Ltd
Current assignee: Commercial Aircraft Corp of China Ltd; Shanghai Aircraft Manufacturing Co Ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2021-06-04

Abstract

The invention discloses a rivet dismounting device, which belongs to the technical field of dismounting tools and comprises: a frame; the thimble is arranged on the rack and can move along the vertical direction to disassemble the rivet on the workpiece; the objective table is arranged on the rack and positioned below the ejector pin for bearing the workpiece, and a flow guide groove is formed in the objective table; the accommodating part is arranged on the rack, and the disassembled rivet can enter the accommodating part through the diversion trench. The invention can rapidly remove the residual rivet on the shearing clamp hole and prevent the residual rivet from accidentally injuring operators.

Description

Rivet dismounting device

Technical Field

The invention relates to the technical field of disassembling tools, in particular to a rivet disassembling device.

Background

The shear test is used for measuring the resistance performance of a material under the action of shear force, and is one of basic test methods for the mechanical performance of the material. In the production and manufacturing process of the airplane, a shear test needs to be carried out on a rivet on the airplane skin, and whether the resistance performance is qualified or not is detected.

When a shear test is performed, a rivet sample to be tested is generally placed on a shear fixture, a universal testing machine is used for cutting off the rivet to be tested and calculating the shear strength of the rivet to obtain the resistance performance of the rivet. After the shear test is finished, the rivet is deformed under stress. The partially deformed rivet may be left in the shear clamp hole and the rivet left in the shear clamp hole may need to be removed after the test is completed.

In the prior art, a tool is generally used to strike the residual rivet so that the residual rivet is struck.

By adopting the method, on one hand, the operation is not normative, and the operation efficiency is low; on the other hand, the struck residual rivets are prone to accidental injury to the operator.

Therefore, a rivet remover is needed to solve the above problems.

Disclosure of Invention

The invention aims to provide a rivet dismounting device which can be used for quickly dismounting residual rivets on a shearing clamp hole and preventing the residual rivets from accidentally injuring operators.

As the conception, the technical scheme adopted by the invention is as follows:

a rivet removal apparatus comprising:

a frame;

the thimble is arranged on the rack and can move along the vertical direction to disassemble the rivet on the workpiece;

the objective table is arranged on the rack and positioned below the ejector pin for bearing the workpiece, and a flow guide groove is formed in the objective table;

the accommodating part is arranged on the rack, and the disassembled rivet can enter the accommodating part through the diversion trench.

Optionally, the rivet dismounting device further comprises a thimble installation part, the thimble is detachably installed at the lower end of the thimble installation part, the thimble installation part can be followed by the vertical direction reciprocating motion so as to drive the thimble to be close to or far away from the rivet.

Optionally, the thimble installation portion is provided with a reset elastic piece, and when the thimble installation portion moves downwards along the vertical direction, the reset elastic piece elastically deforms to store elastic potential energy.

Optionally, the return elastic element is compressed when the thimble mounting portion moves downward in the vertical direction.

Optionally, the upper end of thimble installation department is equipped with spacing cap, the elastic component that resets overlaps and locates on the thimble installation department, the one end of elastic component with spacing cap butt, the other end of elastic component with the frame butt.

Optionally, a driving part is further arranged on the rack, and the driving part is used for driving the thimble installation part to reciprocate in the vertical direction.

Optionally, the driving part includes:

the driving wheel is rotatably arranged on the rack;

driven rack, extend and set firmly in along vertical direction on the thimble installation department, the action wheel can with driven rack meshing transmission is in order to drive the thimble installation department moves along vertical direction.

Optionally, the driving portion further includes a rotating shaft, the rotating shaft is rotatably disposed on the frame, and the driving wheel is sleeved on the rotating shaft and can rotate along with the rotating shaft.

Optionally, the driving portion further includes a swing arm portion, and the swing arm portion is fixedly connected to the rotating shaft to drive the rotating shaft to rotate.

Optionally, the lower extreme of thimble installation department is equipped with the thimble mounting groove, be equipped with the magnetic part in the thimble mounting groove, the thimble with the connection is inhaled to the magnetic part magnetism.

According to the rivet dismounting device provided by the invention, when the rivet on the workpiece is dismounted, the workpiece is placed on the objective table, the thimble moves downwards along the vertical direction, the residual rivet is pushed out, and the rivet is dismounted; the rivet that dismantles enters into the portion of accomodating through the guiding gutter of objective table in, avoids the rivet accidental injury operating personnel who is dismantled.

Drawings

FIG. 1 is a schematic structural view of a rivet remover according to an embodiment of the present invention;

FIG. 2 is a schematic view of the connection between the driving device and the thimble mounting portion in the rivet removing device according to the embodiment of the present invention;

FIG. 3 is a perspective view of the rivet removing apparatus according to the embodiment of the present invention, in which the thimble is mounted in the thimble mounting groove

Fig. 4 is a schematic view of an object stage in the rivet removing apparatus according to the embodiment of the present invention.

In the figure:

1. a thimble;

2. an object stage; 21. a diversion trench; 211. the upper end is open; 212. the lower end is open; 213. a guide slope; 22. installing a clamping groove; 23. a vertical support; 24. a horizontal receiving part;

3. a storage section;

4. a thimble mounting part; 41. a limiting cap; 421. a magnetic member;

5. a frame; 51. a base plate; 52. a column; 53. installing a module; 54. connecting sheets;

6. a restoring elastic member;

71. a driving wheel; 72. a driven rack; 73. a rotating shaft; 74. a rocker section; 741. a turntable; 742. a rocker arm; 75. and a bearing.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present embodiment provides a rivet detaching device for detaching a rivet remaining in a shear jig hole after a shear test is completed.

Referring to fig. 1 to 4, the rivet detaching apparatus includes a frame 5, a thimble 1, a stage 2, and a receiving portion 3.

The thimble 1 is arranged on the frame 5 and can move along the vertical direction to disassemble the rivet on the workpiece. Specifically, in this embodiment, the workpiece is a shearing fixture, and the thimble 1 is used for detaching a residual rivet in a hole of the shearing fixture. The objective table 2 is arranged on the frame 5 and below the thimble 1 for bearing a workpiece, and a diversion trench 21 is arranged on the objective table 2. The housing portion 3 is provided on the frame 5, and the removed rivet can enter the housing portion 3 through the guide groove 21.

The rivet dismounting device that this embodiment provided, when dismantling the rivet on the work piece, place the work piece on objective table 2, thimble 1 enters into shearing fixture downthehole along vertical direction downstream, and it remains the rivet to release, dismantles the rivet. The detached rivet enters the accommodating part 3 through the diversion trench 21 of the objective table 2, so that the detached rivet is prevented from accidentally injuring an operator.

Specifically, in the present embodiment, the frame 5 includes a bottom plate 51, a pillar 52 provided on the bottom plate 51, and a mounting module 53 provided at an end of the pillar 52. Preferably, the upright 52 is mounted to the base plate 51 by a connecting tab 54. Specifically, the connecting piece 54 includes a first portion and a second portion that are vertically connected, the first portion being connected to the bottom plate 51 by a bolt, and the second portion being connected to the pillar 52 by a bolt. Preferably, the pillar 52 has a curvature and is bent toward the thimble 1.

Further, in this embodiment, the rivet dismounting device further includes a thimble installation portion 4, the thimble 1 is detachably installed at the lower end of the thimble installation portion 4, and the thimble installation portion 4 can be moved to and fro along the vertical direction so as to drive the thimble 1 to be close to or to be away from the rivet. Specifically, the mounting module 53 has a hollow structure, and the needle mounting portion 4 passes through the mounting module 53 in the vertical direction and can move up and down.

Referring to fig. 1 and 2, in order to achieve the reciprocating motion of the thimble mounting portion 4 in the vertical direction, the frame 5 is further provided with a driving portion for driving the thimble mounting portion 4 to reciprocate in the vertical direction.

Specifically, in the present embodiment, the driving portion includes a driving wheel 71 and a driven rack 72. The driving wheel 71 is rotatably arranged on the frame 5; the driven rack 72 extends along the vertical direction and is fixedly arranged on the thimble installation portion 4, and the driving wheel 71 can be meshed with the driven rack 72 for transmission so as to drive the thimble installation portion 4 to move along the vertical direction.

In order to realize the installation of the driving part on the frame 5, the driving part further comprises a rotating shaft 73, the rotating shaft 73 is rotatably arranged on the frame 5, and the driving wheel 71 is sleeved on the rotating shaft 73 and can rotate along with the rotating shaft 73. Specifically, in this embodiment, the rotating shaft 73 passes through the installation module 53 in the horizontal direction, and can rotate in the accommodating cavity of the installation module 53, and the driving wheel 71 can be meshed with the driven rack 72 for transmission.

In order to reduce friction between the rotating shaft 73 and the housing of the mounting module 53 when rotating, the driving part further includes a bearing 75. Specifically, two side walls of the installation module 53 opposite to each other in the horizontal direction are provided with a first bearing installation hole and a second bearing installation hole, the first bearing installation hole and the second bearing installation hole are respectively provided with one bearing 75, an outer ring of the bearing 75 cannot rotate, and the rotating shaft 73 is rotatably arranged in an inner ring of the bearing 75.

Further, in order to rotate the rotating shaft 73, the driving portion further includes a swing arm portion 74, and the swing arm portion 74 is fixedly connected to the rotating shaft 73 to drive the rotating shaft 73 to rotate. Specifically, in the present embodiment, the swing arm portion 74 includes a turntable 741 fixedly connected to the rotating shaft 73 and a plurality of swing arms 742 disposed at equal intervals in the circumferential direction of the turntable 741. Specifically, in the present embodiment, three swing arms 742 are disposed at equal intervals along the circumferential direction of the turntable 741, so that the rotation of the operator is facilitated. The swing arm 742 is perpendicular to the rotation shaft 73, and rotating the swing arm 742 rotates the rotation shaft 73. The design of the swing arm 742 adopts the lever principle, which can reduce the working strength of the operator.

Further, in order to enable the thimble 1 to automatically reset after the rivet is detached and facilitate next operation, in this embodiment, the thimble mounting portion 4 is provided with the reset elastic piece 6, the reset elastic piece 6 elastically deforms to store elastic potential energy when the thimble mounting portion 4 moves downwards along the vertical direction, and after the thimble 1 pushes out the residual rivet, the thimble mounting portion 4 can automatically move upwards to drive the thimble 1 to reset under the action of the elastic potential energy stored in the reset elastic piece 6.

Specifically, in this embodiment, the return elastic element 6 is compressed when the thimble mounting portion 4 moves downward in the vertical direction, and after the thimble 1 pushes out the residual rivet, the thimble mounting portion 4 moves upward in the vertical direction under the elastic restoring force of the return elastic element 6. Specifically, in this embodiment, the upper end of the thimble mounting portion 4 is provided with a limiting cap 41, the reset elastic element 6 is sleeved on the thimble mounting portion 4, one end of the reset elastic element 6 abuts against the limiting cap 41, and the other end of the elastic element 6 abuts against the frame 5, specifically, in this embodiment, the other end of the reset elastic element 6 abuts against the upper surface of the mounting module 53, and the reset elastic element 6 is a compression spring sleeved on the thimble mounting portion 4.

Specifically, referring to fig. 3, in order to realize detachable connection of the thimble 1 on the thimble installation portion 4, the specification of the thimble 1 is convenient to change according to the size of the shearing jig hole, the lower end of the thimble installation portion 4 is provided with a thimble installation groove, a magnetic member 421 is arranged in the thimble installation groove, and the thimble 1 is magnetically attracted and connected with the magnetic member 421. Preferably, the material of the thimble 1 is a high-strength and high-hardness magnetic material, such as 45 steel.

Specifically, in the present embodiment, the thimble mounting groove is cylindrical and is adapted to the shape of the end of the thimble 1; the magnetic member 421 is embedded in the thimble mounting portion 4 to prevent interference with the mounting of the thimble 1 in the thimble mounting groove. Preferably, all inlay to thimble installation department 4 along the axial direction and the radial direction of thimble mounting groove and be equipped with magnetic part 421 for thimble 1 is more firm in the installation of thimble mounting groove, is difficult for dropping.

Referring to fig. 4, in order to position the workpiece on the object stage 2, an installation slot 22 is provided on the object stage 2, an upper end opening 211 of the guiding groove 21 is communicated with the installation slot 22, and a central axis of the upper end opening 211 coincides with an axis of the thimble 1. When the shearing fixture is located the installation clamping groove 22, the axis of the fixture hole of the shearing fixture coincides with the central axis of the upper end opening 211, when the thimble 1 moves downwards to push out the residual rivet, the thimble 1 penetrates through the shearing fixture hole and enters the upper end opening 211, the disassembled residual rivet directly falls into the upper end opening 211, and then falls into the accommodating part 3 through the diversion trench 21.

Specifically, the object stage 2 includes a vertical support portion 23 and a horizontal receiving portion 24, a lower end of the vertical support portion 23 is vertically and fixedly connected with the bottom plate 51 of the frame 5, the mounting slot 22 is disposed on an upper surface of the horizontal receiving portion 24, an upper end opening 211 of the guiding gutter 21 is disposed at a bottom of the mounting slot 22, and the guiding gutter 21 extends from the upper end opening 211 to the vertical support portion 23 to a lower end opening 212 located at a side portion of the vertical support portion 23.

Specifically, in this embodiment, the upper end opening 211 is a circular opening and has a diameter larger than that of the rivet, the thimble 1 and the upper end opening 211 are in clearance fit so as to directly push the rivet into the diversion trench 21, the shearing fixture is not abraded in the rivet detaching process, and the service life of the shearing fixture is prolonged; the lower end opening 212 is rectangular to facilitate the rivet to fall into the receiving portion 3.

The accommodating part 3 is a box body provided on the bottom plate 51 and having an opening at the upper end, in order to enable the detached rivet to enter the accommodating part 3 from the guide groove 21, a guide inclined plane 213 is provided in the guide groove 21, and the detached rivet slides out of the guide groove 21 along the guide inclined plane 213 and enters the accommodating part 3 under the action of inertia force and self gravity.

The storage section 3 is detachably provided on the bottom plate 51. Preferably, the bottom plate 51 is provided with a receiving part mounting groove, and the receiving part 3 is arranged in the receiving part mounting groove, so that the receiving part 3 is prevented from shifting; on the other hand, the receiving portion 3 is easily removed from the bottom plate 51 and the rivets in the receiving portion 3 are easily removed. The end opening is formed at one end of the housing mounting groove, and the housing 3 is slid into the housing mounting groove from the end opening when the housing 3 is mounted.

The rivet dismounting device provided by the embodiment is used as follows:

placing a shearing clamp in the mounting clamping groove 22, aligning a shearing clamp hole with an upper end opening 211 of the diversion trench 21, rotating the rocker arm 742 along the first time-axis direction, driving the thimble 1 downwards by the thimble mounting part 4, compressing the resetting elastic piece 6, enabling the thimble 1 to downwards penetrate through the shearing clamp hole, pushing the rivet remained in the shearing clamp hole into the diversion trench 21, enabling the disassembled rivet to slide out of the diversion trench 21 along the guide inclined plane 213, and enabling the disassembled rivet to enter the accommodating part 3 under the action of inertia force and self gravity; after the disassembly is finished, the rocker arm 742 is released, and the thimble mounting part 4 moves upwards and drives the thimble 1 to reset under the action of the elastic restoring force of the reset elastic element 6.

The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A rivet removal apparatus, comprising:

a frame (5);

the ejector pin (1) is arranged on the rack (5) and can move along the vertical direction to detach the rivet on the workpiece;

the objective table (2) is arranged on the rack (5) and is positioned below the thimble (1) and used for bearing the workpiece, and a flow guide groove (21) is formed in the objective table (2);

and the accommodating part (3) is arranged on the rack (5), and the disassembled rivet can enter the accommodating part (3) through the diversion trench (21).

2. The rivet dismounting device according to claim 1, characterized in that, the rivet dismounting device further comprises a thimble mounting portion (4), the thimble (1) is detachably mounted at the lower end of the thimble mounting portion (4), and the thimble mounting portion (4) can reciprocate along the vertical direction to drive the thimble (1) to approach to or keep away from the rivet.

3. The rivet disassembling device according to claim 2, characterized in that a return elastic member (6) is provided on the thimble mounting portion (4), and the return elastic member (6) is elastically deformed to store elastic potential energy when the thimble mounting portion (4) moves downward in a vertical direction.

4. Rivet dismounting device according to claim 3, characterized in that said return spring (6) is compressed when said pin mounting portion (4) is moved downwards in a vertical direction.

5. The rivet disassembling device according to claim 4, characterized in that a limiting cap (41) is provided at the upper end of the thimble mounting portion (4), the elastic resetting member (6) is sleeved on the thimble mounting portion (4), one end of the elastic member (6) is abutted against the limiting cap (41), and the other end of the elastic member (6) is abutted against the frame (5).

6. The rivet disassembling apparatus according to claim 2, characterized in that a driving portion for driving the thimble mounting portion (4) to reciprocate in the vertical direction is further provided on the frame (5).

7. The rivet remover of claim 6, wherein the drive portion comprises:

the driving wheel (71) is rotatably arranged on the rack (5);

driven rack (72), extend and set firmly in along vertical direction on thimble installation department (4), action wheel (71) can with driven rack (72) meshing transmission is in order to drive thimble installation department (4) are along vertical direction motion.

8. The rivet disassembling device according to claim 7, characterized in that the driving portion further includes a rotating shaft (73), the rotating shaft (73) is rotatably disposed on the frame (5), and the driving wheel (71) is sleeved on the rotating shaft (73) and can rotate along with the rotating shaft (73).

9. Rivet dismounting device according to claim 8, characterized in that said drive part further comprises a rocker part (74), said rocker part (74) being fixedly connected to said shaft (73) for rotating said shaft (73).

10. The rivet dismounting device according to any one of claims 2-9, characterized in that a thimble mounting groove is provided at a lower end of the thimble mounting portion (4), a magnetic member (421) is provided in the thimble mounting groove, and the thimble (1) is magnetically connected with the magnetic member (421).