Small sheet metal part punching and clamping device

Abstract

The utility model provides a small sheet metal part punching and clamping device. The small sheet metal part punching and clamping device comprises a pressing part and a positioning part. The positioning part is of a U-shaped structure, and a positioning pin hole, a connecting piece positioning groove, a positioning groove, a preset drill hole, a chip removal channel, a chip removal opening and a fastening screw hole are formed in the positioning part; and a positioning pin, a drilling opening and a fastening screw mounting hole are arranged on the pressing part. According to the device, the pressing part and the positioning part are matched to fix the small sheet metal part; the position of the workpiece is positioned and limited through the connecting piece positioning groove and the positioning groove, and meanwhile, the workpiece connecting piece is supported; the preset drilling hole is matched with the drilling position of the connecting piece, so that the drilling accuracy is guaranteed; and the chip removal channel is formed and communicates with the preset drill hole, and cleaning after operation is facilitated. According to the device, the stability of workpiece drilling operation can be guaranteed, a workpiece cannot deform due to lateral extrusion, a workpiece connecting piece can be effectively protected, and it is guaranteed that the connecting piece cannot be bent or damaged in the drilling operation process.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing devices, and in particular relates to a small sheet metal parts punching and clamping device. Background Art

[0002] In current mechanical production, a large number of sheet metal parts are bent to form various mechanical structures, which are used as installation boxes on large equipment, etc. For some small sheet metal bent structures, it is mostly necessary to set small connecting pieces on the sheet metal parts and fix them with screws. However, due to the small structure of small sheet metal parts and the thin steel plates, it is difficult to use conventional clamps to clamp the connecting pieces when drilling holes, which can easily cause deformation of the sheet metal parts. In addition, when drilling holes for thin and small connecting pieces, the connecting pieces are easily bent under the action of the drill bit, which in turn affects the function of the entire sheet metal part. Utility Model Content

[0003] In order to solve the problem that existing fixtures are difficult to effectively clamp small sheet metal parts and cannot provide sufficient stability when punching holes in them, we provide a new small sheet metal part punching clamping device.

[0004] This device fixes small sheet metal parts through the cooperation of upper and lower clamping devices, ensures the accurate positioning of the clamping device through the positioning structure, and limits the position of the workpiece. On this basis, a workpiece accommodating area is set on the clamping device, and the clamping device is used to provide support for the connecting piece on the sheet metal part. The preset drill hole on the clamping device is matched with the drilling position of the connecting piece to ensure the drilling accuracy. At the same time, a chip removal channel is set on the clamping device and connected to the preset drill hole to facilitate cleaning after the operation. This device can further design the preset drill hole into a keyway form to match the drilling requirements of workpieces of different models.

[0005] Specifically, the utility model provides a punching and clamping device for small sheet metal parts, which comprises a pressing part 1 and a positioning part 2; wherein:

[0006] The positioning portion 2 is a U-shaped structure, and a workpiece accommodating area 9 is formed between the vertical support blocks on both sides. The upper surfaces of the vertical support blocks on both sides are the positioning positions of the workpiece connecting pieces. The upper surfaces of the vertical support blocks on both sides are provided with positioning pin holes 3, and their positions correspond to the positions of the positioning pins 11 on the pressing portion 1;

[0007] A connecting piece positioning groove 4 is arranged on the upper surface of the vertical support block on the right side of the positioning part 2, and a preset drill hole 5 is opened at the inner center position of the connecting piece positioning groove 4. When the workpiece is placed in the workpiece accommodating area 9, the connecting piece on the workpiece is clamped in the connecting piece positioning groove 4 and is limited in position by the connecting piece positioning groove 4; at least one fastening screw hole 10 is opened on the upper surface of the vertical support block on the right side of the positioning part 2;

[0008] The upper surface of the left vertical support block of the positioning part 2 is provided with two positioning grooves 6, and the center positions of the two positioning grooves 6 are provided with preset drill holes 5; the upper surface of the left vertical support block of the positioning part 2 is provided with at least one fastening screw hole 10;

[0009] The side surfaces of the vertical support blocks on both sides of the positioning portion 2 are inclined upward to form chip removal channels 7, the upper ends of the chip removal channels 7 are connected to the preset drill holes 5, and the lower ends form chip removal openings 8;

[0010] The shape of the clamping part 1 matches the shape of the positioning part 2. A positioning pin 11 is provided on the lower surface of the clamping part 1. The position of the positioning pin 11 corresponds to the position of the positioning pin holes 3 provided on the upper surfaces of the vertical support blocks on both sides of the positioning part 2. When the clamping part 1 and the positioning part 2 are assembled, the positioning pin 11 is inserted into the corresponding positioning pin hole 3 to play a limiting role.

[0011] The clamping part 1 is provided with a drilling opening 12 and a fastening screw mounting hole 13, and the position of the drilling opening 12 corresponds one-to-one to the position of the preset drilling holes 5 opened on the upper surfaces of the vertical support blocks on both sides of the positioning part 2, and the position of the fastening screw mounting hole 13 corresponds one-to-one to the position of the fastening screw holes 10 opened on the upper surfaces of the vertical support blocks on both sides of the positioning part 2.

[0012] Furthermore, the shape of the connection piece positioning groove 4 in the punching and clamping device matches the shape of the workpiece connection piece, and the depth thereof matches the thickness of the workpiece connection piece.

[0013] Furthermore, the diameter of the preset drill hole 5 in the punching and clamping device is greater than or equal to the diameter of the hole that needs to be drilled on the workpiece connecting plate.

[0014] Preferably, the two positioning grooves 6 in the punching and clamping device are both configured as long grooves.

[0015] Preferably, the preset drill hole 5 in the punching and clamping device is configured as a keyway.

[0016] Furthermore, the positioning pin 11 in the punching and clamping device is fixedly connected to the lower surface of the pressing part or assembled through threads.

[0017] Furthermore, the drilling opening 12 and the preset drilling hole 5 in the present punching and clamping device are circular holes arranged concentrically;

[0018] The fastening screw installation hole 13 and the fastening screw hole 10 are circular holes arranged concentrically.

[0019] Preferably, the fastening screw mounting hole 13 in the punching and clamping device is a countersunk hole structure.

[0020] The small sheet metal parts punching and clamping device provided by the utility model can ensure the stability of the workpiece drilling operation, so that the workpiece will not be deformed due to lateral extrusion. More importantly, the device can effectively protect the workpiece connecting piece to ensure that the connecting piece will not be bent or damaged during the drilling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model, not all embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is an exploded view of the overall structure of the small sheet metal parts punching and clamping device of the utility model.

[0023] Figure 2 Schematic diagram of the external structure of the workpiece to be drilled.

[0024] Figure 3 The utility model is a schematic diagram of the positioning part structure of the small sheet metal parts punching and clamping device.

[0025] Figure 4 This is a central sectional view of the positioning part of the small sheet metal parts punching and clamping device of the utility model.

[0026] Figure 5 This is a side view of the positioning part of the small sheet metal parts punching and clamping device of the utility model (cut-out view of the chip removal channel Figure 1 ).

[0027] Figure 6 This is a side view of the positioning part of the small sheet metal parts punching and clamping device of the utility model (cut-out view of the chip removal channel Figure 2 ).

[0028] Figure 7 It is a bottom view of the pressing part of the small sheet metal parts punching and clamping device of the utility model.

[0029] Figure 8 It is a top view of the clamping part of the small sheet metal parts punching and clamping device of the utility model.

[0030] Fig. 9 This is a schematic diagram of assembling a workpiece and a positioning part of a punching and clamping device for small sheet metal parts of the utility model.

[0031] Fig.10 It is a schematic diagram of the working state of the small sheet metal parts punching and clamping device of the utility model.

[0032] Figure markings: 1-clamping part; 2-positioning part; 3-positioning pin hole; 4-connecting plate positioning groove; 5-preset drilling hole; 6-positioning groove; 7-chip removal channel; 8-chip removal port; 9-workpiece accommodating area; 10-fastening screw hole; 11-positioning pin; 12-drilling opening; 13-fastening screw mounting hole. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments, and the utility model can also be implemented or applied through other different specific implementation methods. The details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the utility model.

[0034] At the same time, it should be understood that the protection scope of the present invention is not limited to the specific embodiments described below; it should also be understood that the terms used in the embodiments of the present invention are for describing specific embodiments rather than for limiting the protection scope of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In the description of the present invention, unless otherwise specified and limited, the terms "set", "install", "connect", "connection", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0037] The utility model provides a small sheet metal parts punching and clamping device, and the embodiments of the utility model are described in detail below in conjunction with the accompanying drawings.

[0038] like Figure 1As shown, the small sheet metal parts punching and clamping device of the utility model comprises a clamping part 1 and a positioning part 2. Among them, the positioning part 2 is a U-shaped structure, and a workpiece accommodating area 9 is formed between the vertical support blocks on both sides. The upper surfaces of the vertical support blocks on both sides are the positioning positions of the workpiece connecting pieces. The upper surfaces of the vertical support blocks on both sides are provided with positioning pin holes 3, and their positions correspond to the positions of the positioning pins 11 of the clamping part 1.

[0039] Figure 2 Shown is the outer structure of the workpiece to be drilled.

[0040] like Figure 3 and Figure 4 As shown, a connecting piece positioning groove 4 is provided on the upper surface of the vertical support block on the right side of the positioning part 2. The shape of the connecting piece positioning groove 4 matches the shape of the workpiece connecting piece, and its depth matches the thickness of the workpiece connecting piece. A preset drill hole 5 is opened at the inner center position of the connecting piece positioning groove 4. The diameter of the preset drill hole 5 is the same as or slightly larger than the diameter of the hole to be opened on the workpiece connecting piece. When the workpiece is located in the workpiece accommodating area 9, the connecting piece on the workpiece is clamped inside the connecting piece positioning groove 4 and is limited in position by the connecting piece positioning groove 4. At least one fastening screw hole 10 is also opened on the upper surface of the vertical support block on the right side of the positioning part 2.

[0041] like Figure 3 As shown, two positioning grooves 6 are provided on the upper surface of the vertical support block on the left side of the positioning part 2, and the distances between the two connecting plates are different for different types of workpieces. The two positioning grooves 6 are both set as long grooves, and preset drill holes 5 are opened at the center positions inside the two positioning grooves 6. The preset drill holes 5 in the two positioning grooves 6 are both set in the form of keyways, and at least one fastening screw hole 10 is also opened on the upper surface of the vertical support block on the left side of the positioning part 2.

[0042] When the drilling operation is completed, there will be iron chips inside the preset drill hole 5. In order to ensure the quality of continuous work, the sides of the vertical support blocks on both sides are inclined upward to open chip removal channels 7. The upper end of the chip removal channel 7 is connected to the preset drill hole 5, and the lower end forms a chip removal port 8. Figure 5 and Figure 6 shown.

[0043] like Figure 7 and Figure 8As shown, the shape of the clamping part 1 matches the shape of the positioning part 2. Two positioning pins 11 are arranged on the lower surface of the clamping part 1. The positioning pins 11 are fixedly connected to the lower surface of the clamping part or assembled by threads. The position of the positioning pins 11 corresponds to the position of the positioning pin holes 3. When the clamping part 1 and the positioning part 2 are assembled, the two positioning pins 11 are inserted into the corresponding positioning pin holes 3 to play a limiting role. The clamping part 1 is also provided with a drilling opening 12 and a fastening screw installation hole 13. The position of the drilling opening 12 corresponds to the position of the preset drilling hole 5 opened on the upper surface of the vertical support blocks on both sides of the positioning part 2. The position of the fastening screw installation hole 13 corresponds to the position of the fastening screw hole 10 opened on the upper surface of the vertical support blocks on both sides of the positioning part 2. The drilling opening 12 and the preset drilling hole 5, the fastening screw installation hole 13 and the fastening screw hole 10 are respectively concentrically arranged circular holes. The fastening screw installation hole 13 is a countersunk hole structure.

[0044] like Fig. 9 and Fig.10 As shown, when the device is in operation, the workpiece is first inserted into the workpiece accommodating area 9, and the connecting pieces on both sides of the workpiece are respectively clamped in the connecting piece positioning groove 4 and the two positioning grooves 6, and then the clamping part 1 and the positioning part 2 are assembled, so that the two positioning pins 11 are respectively inserted into the corresponding positioning pin holes 3 to complete the positioning, and then the fastening screws are inserted into the fastening screw installation holes 13 and the fastening screw holes 10 to complete the assembly of the two parts. Then, the workpiece connecting piece between the clamping part 1 and the positioning part 2 is drilled through three preset drilling holes 5. The device can ensure the stability of the workpiece drilling operation, so that the workpiece will not be deformed due to lateral extrusion. More importantly, the device can effectively protect the workpiece connecting piece, ensuring that the connecting piece will not be bent or damaged during the drilling operation.

[0045] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any technician familiar with the profession can make some changes or modifications to the technical contents disclosed above without departing from the scope of the technical solution of the utility model to obtain equivalent embodiments with equivalent changes. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model are still within the scope of the technical solution of the utility model.

Claims

1. A small sheet metal parts punching and clamping device, characterized in that: The punching and clamping device comprises a pressing portion (1) and a positioning portion (2); wherein: The positioning portion (2) is a U-shaped structure, a workpiece accommodating area (9) is formed between the vertical support blocks on both sides, the upper surfaces of the vertical support blocks on both sides are the positioning positions of the workpiece connecting pieces, and positioning pin holes (3) are provided on the upper surfaces of the vertical support blocks on both sides, and the positions of the positioning pins (11) on the pressing portion (1) correspond to the positions of the positioning pins; A connecting piece positioning groove (4) is arranged on the upper surface of the vertical supporting block on the right side of the positioning part (2), and a preset drill hole (5) is opened at the inner center position of the connecting piece positioning groove (4). When the workpiece is placed in the workpiece accommodating area (9), the connecting piece on the workpiece is clamped in the connecting piece positioning groove (4) and is limited in position by the connecting piece positioning groove (4); at least one fastening screw hole (10) is opened on the upper surface of the vertical supporting block on the right side of the positioning part (2); The upper surface of the left vertical support block of the positioning part (2) is provided with two positioning grooves (6), and the center positions of the two positioning grooves (6) are both provided with preset drill holes (5); the upper surface of the left vertical support block of the positioning part (2) is provided with at least one fastening screw hole (10); The side surfaces of the vertical support blocks on both sides of the positioning portion (2) are provided with chip removal channels (7) inclined upward, the upper end of the chip removal channel (7) is connected to the preset drill hole (5), and the lower end forms a chip removal opening (8); The shape of the clamping part (1) matches the shape of the positioning part (2); a positioning pin (11) is provided on the lower surface of the clamping part (1); the position of the positioning pin (11) corresponds to the position of the positioning pin holes (3) provided on the upper surfaces of the vertical support blocks on both sides of the positioning part (2); when the clamping part (1) and the positioning part (2) are assembled, the positioning pin (11) is inserted into the corresponding positioning pin hole (3) to play a limiting role; The clamping portion (1) is provided with a drilling opening (12) and a fastening screw installation hole (13), the position of the drilling opening (12) corresponds one-to-one to the position of the preset drilling holes (5) opened on the upper surfaces of the vertical support blocks on both sides of the positioning portion (2), and the position of the fastening screw installation hole (13) corresponds one-to-one to the position of the fastening screw holes (10) opened on the upper surfaces of the vertical support blocks on both sides of the positioning portion (2).

2. The small sheet metal parts punching and clamping device according to claim 1 is characterized in that: The shape of the connecting piece positioning groove (4) matches the shape of the workpiece connecting piece, and the depth thereof matches the thickness of the workpiece connecting piece.

3. The small sheet metal parts punching and clamping device according to claim 1 is characterized in that: The diameter of the preset drill hole (5) is greater than or equal to the diameter of the hole that needs to be drilled on the workpiece connecting plate.

4. The small sheet metal parts punching and clamping device according to claim 1 is characterized in that: The two positioning grooves (6) are both configured as long grooves.

5. The small sheet metal parts punching and clamping device according to claim 1 is characterized in that: The preset drilled hole (5) is arranged in the form of a keyway.

6. The small sheet metal parts punching and clamping device according to claim 1 is characterized in that: The positioning pin (11) is fixedly connected to the lower surface of the pressing part or assembled through threads.

7. The small sheet metal parts punching and clamping device according to claim 1 is characterized in that: The drilling opening (12) and the preset drilling hole (5) are circular holes arranged concentrically; The fastening screw installation hole (13) and the fastening screw hole (10) are circular holes arranged concentrically.

8. The small sheet metal parts punching and clamping device according to claim 1 is characterized in that: The fastening screw installation hole (13) is a countersunk hole structure.

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