Positioning pin taking-out device

Abstract

A locating pin taking-out device comprises a rod piece, a first end of the rod piece is fixedly connected with a limiting piece, and at least part of the limiting piece protrudes out of the side face of the rod piece; the impact piece is connected to the rod piece in a sliding mode in the axis direction of the rod piece; the clamping piece is fixedly installed at the second end of the rod piece, the clamping piece comprises a connecting end fixedly connected with the second end of the rod piece and a clamping end far away from the rod piece, and a clamping hole used for containing a positioning pin is formed in the end portion of the clamping end. And a clamping structure for clamping the positioning pin in the clamping hole is also arranged. According to the positioning pin taking-out device provided by the technical scheme, the positioning pin can be taken out from the workpiece quickly, the surface of the workpiece and the surface of the positioning pin cannot be damaged, and meanwhile the taking-out mode of the positioning pin is simple and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning pin disassembly tools, in particular to a positioning pin taking-out device. Background Art

[0002] The locating pin is a commonly used mechanical part used to limit the freedom of components. In mechanical design, locating pins play a vital role, especially when used to position workpieces. Locating pins usually use the holes on the workpiece as a positioning reference to ensure accurate alignment between different components. The locating pin is usually composed of a cylinder and is installed on a component by interference fit. The corresponding workpiece is provided with a locating hole that matches the locating pin. When they are matched and docked with each other, the workpiece is accurately positioned.

[0003] However, when repairing or disassembling mechanical parts, it is difficult to remove the locating pin due to its small size and the small portion exposed on the surface of the part. The commonly used method is to clamp the locating pin with the shear blade of a clamp, use the end of the clamp as a fulcrum, and use the clamp handle as a lever to pull out the locating pin.

[0004] Although the locating pin can be removed by the above method, the end of the clamp acts as a fulcrum against the surface of the workpiece when removing it, which can easily cause damage to the surface of the workpiece. In addition, when the locating pin is clamped by the shear blade of the clamp, sufficient clamping force needs to be ensured, so shear marks are easily generated on the surface of the locating pin, affecting the reuse of the locating pin.

[0005] Therefore, there is an urgent need for a positioning pin removal device. Utility Model Content

[0006] The utility model aims to provide a positioning pin removing device, which is used for quickly and conveniently removing the positioning pin from a component.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A positioning pin removal device comprises:

[0009] A rod, wherein a first end of the rod is fixedly connected to a limiting member, and the limiting member at least partially protrudes from a side surface of the rod;

[0010] An impact member, wherein the impact member is slidably connected to the rod member along the axis direction of the rod member;

[0011] A clamping member is fixedly installed on the second end of the rod member, and the clamping member includes a connecting end fixedly connected to the second end of the rod member and a clamping end away from the rod member. A clamping hole for accommodating a positioning pin is provided on the end of the clamping end, and a clamping structure for clamping the positioning pin in the clamping hole is also provided.

[0012] Further, the clamping end includes

[0013] A fixing portion, the fixing portion is fixedly connected to the connecting end, and a first groove is formed on a side surface of the fixing portion along an axial direction;

[0014] The clamping part has a second groove corresponding to the first groove axially formed along the side surface of the clamping part. After the clamping part and the fixing part are buckled with each other, the first groove and the second groove are matched with each other to form the clamping hole.

[0015] Furthermore, the clamping structure includes at least one through hole opened on the fixing portion and penetrating the thickness of the fixing portion, a threaded hole opened on the clamping portion and corresponding to the through hole, and a bolt passing through the through hole and threadedly connected to the threaded hole.

[0016] Furthermore, a fastening assembly is provided on the impact member, and when the impact member impacts in the direction of the limiting member, the fastening assembly is used to provide a fastening force to the fixing portion and the clamping portion.

[0017] Furthermore, the clamping end is a frustum structure with a larger top and a smaller bottom;

[0018] The fastening assembly includes

[0019] A fastening ring, the fastening ring is sleeved on the clamping end, and the diameter of the fastening ring is larger than the size of the lower end of the clamping end and smaller than the size of the upper end of the clamping end;

[0020] A pulling member, one end of which is fixedly connected to the fastening ring, and the other end of which is fixedly connected to the impact member.

[0021] Furthermore, there are at least two pulling members, which are evenly spaced and distributed.

[0022] Furthermore, the cross section of the clamping hole is a polygonal structure.

[0023] The beneficial effects produced by the utility model are as follows:

[0024] The embodiment of the utility model provides a positioning pin removal device, which is provided with an impact member, a limit member and a clamping member on the rod member. The impact member can hit the limit member to cause the clamping member to be pulled upward. The pulling force is the impact force of the impact member on the limit member. The positioning pin is pulled out of the workpiece by the instantaneous burst of pulling force. At the same time, in order to ensure that the positioning pin has sufficient clamping force in the clamping hole, a fastening assembly is also provided on the impact member, which can tighten the clamping end while the impact force device limit member is in place to prevent the impact force from being greater than the clamping force of the clamping end on the positioning pin, causing the positioning pin to fall off in the clamping hole. The positioning pin removal device provided by the technical solution can quickly remove the positioning pin from the workpiece without causing damage to the surface of the workpiece and the positioning pin. At the same time, the method for removing the positioning pin is simple and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0026] Figure 2 It is a schematic diagram of the exploded structure of the clamping member in the utility model.

[0027] Figure 3 It is a cross-sectional view in the present utility model.

[0028] Figure 4 for Figure 3 A partial enlarged view of part A in the middle.

[0029] In the figure: 100, rod; 101, limit member; 200, impact member; 300, clamping member; 301, connecting end; 310, clamping end; 311, clamping hole; 312, fixing part; 3121, first groove; 313, clamping part; 3131, second groove; 3122, through hole; 3132, threaded hole; 314, bolt; 210, fastening assembly; 211, fastening ring; 212, pulling member. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the implementation modes are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0031] The embodiment of the utility model provides a positioning pin removing device, which can conveniently and quickly remove the positioning pin from the workpiece without causing damage to the surface of the workpiece and the surface of the positioning pin, thereby affecting the reuse of the workpiece or the positioning pin.

[0032] like Figure 1-4As shown, a positioning pin removal device provided by an embodiment of the utility model includes a rod 100, an impact member 200 and a clamping member 300, wherein a first end of the rod 100 is fixedly connected to a limiting member 101, such as Figure 1 , 3 As shown, the stopper 101 is fixedly mounted on the upper end of the rod 100. In this embodiment, the stopper 101 and the rod 100 are fixedly connected by bolts. In other embodiments, it can also be realized by threaded connection. At least a part of the stopper 101 protrudes from the circumferential surface of the rod 100. In this embodiment, the stopper 101 is a cylinder, and the diameter is larger than the cylindrical size of the rod 100, so that the edge of the stopper 101 is located outside the edge of the rod 100; the impact member 200 is sleeved on the rod 100. It can be imagined that the impact member 200 A hole is provided on the impact member 200 to form a sliding pair with the rod 100, so that the impact member 200 can slide along the axial direction of the rod 100; the clamping member 300 is fixedly installed on the second end of the rod 100, and the clamping member 300 includes a connecting end 301 connected to the second end of the rod 100 by a thread and a clamping end 310 away from the rod 100, and a clamping hole 311 for accommodating a positioning pin is provided on the clamping end 310, and a clamping mechanism for clamping the positioning pin in the clamping hole 311 is also provided on the clamping end.

[0033] During the process of removing the locating pin, the clamping hole 311 is mounted on the portion of the locating pin that protrudes from the workpiece, and the locating pin is fixed in the clamping hole 311 by the clamping structure. The handheld impact piece 200 is quickly moved along the rod 100 toward the limit piece 101, so that the impact piece 200 impacts the limit piece 101, thereby providing an impact force in the direction away from the workpiece to the clamping piece 300 through the limit piece 101 and the rod 100, thereby removing the locating pin from the workpiece by the impact force. It can be imagined that since the locating pin and the workpiece are relatively firmly installed with each other, the locating pin can be removed by causing the impact piece 200 to impact the limit piece 101 multiple times. The locating pin removal device provided by the utility model will not cause pressure on the surface of the workpiece to cause damage during the process of disassembling the locating pin, nor will it cause damage to the surface of the locating pin. The disassembly method is only to quickly move the handheld impact piece in the direction of the limit piece, so that the impact piece hits the limit piece to instantly generate an upward impact force, which is converted into an upward pulling force on the locating pin on the clamping piece, thereby removing the locating pin from the workpiece. The disassembly method of the device is simpler and more reliable.

[0034] like Figure 2-4As shown, the clamping end 310 of the clamping member 300 is set as a split structure, specifically including a fixing part 312 and a clamping part 313, wherein the fixing part 312 is fixedly connected with the connecting end 301, in this embodiment, the fixing part 312 and the connecting end 301 are an integrally formed structure, and a first groove 3121 is provided on the side of the fixing part 312 along the axial direction, in this embodiment, the clamping member 300 is a rotating body, the fixing part 312 is a body having a rotating outer surface and a rectangular inner surface, the first groove 3121 is provided on the inner surface, and the clamping part 313 is a separate part. It is set to a shape symmetrical to the fixing part 312, and a second groove 3131 corresponding to the first groove 3121 is provided on the rectangular side, after the clamping part 313 is buckled on the fixing part 312, the first groove 3121 and the second groove 3131 are mutually matched to form a clamping hole 311 for accommodating the positioning pin.

[0035] During the process of disassembling the locating pin, by setting the clamping end 310 as a split structure, the size of the clamping hole 311 can be adjusted by changing the fixing part 312 and the clamping part 313, so that it can adapt to locating pins of different sizes and have more usage scenarios.

[0036] The clamping structure is used to lock the positioning pin in the clamping hole 311, so that when the impact member 200 impacts the stop member 101 upward, it can provide an upward impact force to the positioning pin, thereby removing the positioning pin from the workpiece. Figure 2 As shown, the clamping structure provided in this embodiment includes at least one through hole 3122 opened on the fixing portion 312 and passing through the fixing portion 312, a threaded hole 3132 opened on the clamping portion 313 and corresponding to the through hole 3122, and also includes a bolt 314 passing through the through hole 3122 and being threadedly connected to the threaded hole 3132. The clamping portion 313 is connected to the fixing portion 312 by the bolt 314, and the size of the clamping hole 311 is changed by rotating the bolt 314. The clamping portion 313 and the fixing portion 312 are brought close to each other by tightening the bolt 314, so that the positioning pin is clamped in the clamping hole 311.

[0037] In this embodiment, the cross-sectional shape of the clamping hole 311 is square, that is, the four surfaces of the clamping hole 311 are in contact with the surface of the positioning pin. Accordingly, the cross-sectional shape of the clamping hole 311 can also be other polygons to increase the contact surface between the clamping hole 311 and the positioning pin to ensure sufficient clamping force. Similarly, the cross-sectional shape of the clamping hole 311 can also be set to be circular.

[0038] When the impact member 200 impacts toward the limit member 101, since the impact force is directed upward and explodes in an instant, the locating pin installed on the workpiece is removed by impact. During this process, if the fastening force between the fixing portion 312 and the clamping portion 313 is smaller than the impact force, the locating pin will be disengaged from the clamping hole 311, thereby affecting the removal of the locating pin. In order to ensure that the clamping end 310 can clamp the locating pin more tightly, a fastening assembly 210 is further provided on the impact member 200. When the impact member 200 moves upward to impact the limit member 101, it is used to provide fastening force to the fixing portion 312 and the clamping portion 313, so that the fixing portion 312 and the clamping portion 313 are fastened to each other, thereby clamping the locating pin more tightly.

[0039] like Figure 3-4 As shown, the clamping end 310 of the clamping member 300 is provided with a truncated cone structure with a larger upper portion and a smaller lower portion. The fastening assembly 210 includes a fastening ring 211 which is sleeved on the clamping end 310 with a truncated cone structure. The diameter of the fastening ring 211 is larger than the diameter of the lower end of the clamping end 310 and smaller than the diameter of the upper end of the clamping end 310, so that the clamping ring can be sleeved on the clamping end 310 at the lower end of the clamping end 310 and will not be adjusted out at the upper end of the clamping end 310. The fastening assembly 210 also includes a pulling member 212, one end of which is fixedly connected to the fastening ring 211, and the other end of which is fixedly connected to the impact member 200. In this embodiment, the pulling member 212 can be a flexible The components, such as metal wires, ropes, etc., can simultaneously pull the fastening ring 211 upward through the pulling member 212 during the process of the impact member 200 impacting the limit member 101. When the impact member 200 hits the limit member 101, the fastening ring 211 is slightly smaller in diameter than the clamping end 310, so that the upward movement of the fastening ring 211 is restricted. At this time, the clamping ring tightens the fixing portion 312 and the clamping portion 313, thereby making the fixing portion 312 and the clamping portion 313 approach each other, providing a clamping force for the positioning pin, avoiding the situation where the impact force is greater than the clamping force for the positioning pin, and ensuring that the positioning pin can be stably clamped in the clamping hole 311. It is worth mentioning that when setting the length of the pulling member 212, it should be adaptively set according to the distance between the pulling member 212 and the stopper 101, the diameter of the fastening ring 211, and the diameter of the clamping end 310, so that the impact member 200 can just hit the stopper 101, and at the same time, the fastening ring 211 can tighten the fixing part 312 and the clamping part 313. In order to ensure that the fastening ring 211 can be pulled upward in a stable and balanced manner when the impact member 200 moves upward to impact the stopper 101, two fastening rings 211 are arranged on the pulling member 212 and are evenly spaced.

[0040] The embodiment of the utility model provides a positioning pin removal device, which is provided with an impact member 200, a limit member 101 and a clamping member 300 on the rod 100. The impact member 200 can hit the limit member 101, so that the clamping member 300 is subjected to an upward pulling force, which is the impact force of the impact member 200 on the limit member 101. The positioning pin is pulled out of the workpiece by the instantaneous pulling force. At the same time, in order to ensure that the positioning pin has sufficient clamping force in the clamping hole 311, a fastening assembly 210 is also provided on the impact member 200, which can tighten the clamping end 310 while the impact force device limit member 101 is engaged, so as to prevent the impact force from being greater than the clamping force of the clamping end 310 on the positioning pin, so that the positioning pin falls off in the clamping hole 311. The positioning pin removal device provided by the technical solution can quickly remove the positioning pin from the workpiece without causing damage to the surface of the workpiece and the positioning pin. At the same time, the method of removing the positioning pin is simple and reliable.

[0041] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A positioning pin removal device, characterized in that: Included are: A rod, wherein a first end of the rod is fixedly connected to a limiting member, and the limiting member at least partially protrudes from a side surface of the rod; An impact member, wherein the impact member is slidably connected to the rod member along the axis direction of the rod member; A clamping member is fixedly installed on the second end of the rod member, and the clamping member includes a connecting end fixedly connected to the second end of the rod member and a clamping end away from the rod member. A clamping hole for accommodating a positioning pin is provided on the end of the clamping end, and a clamping structure for clamping the positioning pin in the clamping hole is also provided.

2. A positioning pin removal device according to claim 1, characterized in that: The clamping end includes A fixing portion, the fixing portion is fixedly connected to the connecting end, and a first groove is formed on a side surface of the fixing portion along an axial direction; The clamping part has a second groove corresponding to the first groove axially formed along the side surface of the clamping part. After the clamping part and the fixing part are buckled with each other, the first groove and the second groove are matched with each other to form the clamping hole.

3. A positioning pin removal device according to claim 2, characterized in that: The clamping structure includes at least one through hole opened on the fixing portion and penetrating the thickness of the fixing portion, a threaded hole opened on the clamping portion and corresponding to the through hole, and a bolt passing through the through hole and threadedly connected to the threaded hole.

4. A positioning pin removal device according to claim 3, characterized in that: A fastening assembly is also provided on the impact member, and when the impact member impacts in the direction of the limiting member, the fastening assembly is used to provide a fastening force to the fixing portion and the clamping portion.

5. A positioning pin removal device according to claim 4, characterized in that: The clamping end is a truncated cone structure with a larger top and a smaller bottom; The fastening assembly includes A fastening ring, the fastening ring is sleeved on the clamping end, and the diameter of the fastening ring is larger than the size of the lower end of the clamping end and smaller than the size of the upper end of the clamping end; A pulling member, one end of which is fixedly connected to the fastening ring, and the other end of which is fixedly connected to the impact member.

6. A positioning pin removal device according to claim 5, characterized in that: There are at least two pulling members, which are distributed at equal intervals.

7. A positioning pin removal device according to any one of claims 1 to 5, characterized in that: The cross section of the clamping hole is a polygonal structure.

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