Clamping tool for metal circular plate trepanning

Abstract

The utility model relates to a clamping tool for tapping a metal circular plate, which belongs to the technical field of tool clamps and comprises a base provided with a through hole for mounting an external bolt; the top surface of the supporting plate is provided with a placing position for placing the metal circular plate, the supporting plate is arranged at the top of the base, the edge of the top surface of the supporting plate is provided with a convex ring, and the inner ring wall of the convex ring is provided with an internal thread to form an internal thread pipe; the annular plate is provided with an outer threaded pipe and an outer ring which are coaxial, and a gap is formed between the outer threaded pipe and the outer ring; the outer wall of the pressing pipe is connected with the inner ring wall of the annular plate, and one end of the pressing pipe extends out of the outer threaded pipe and the outer ring; the inner threaded pipe is inserted into the gap and is in threaded connection with the outer threaded pipe, and the end face of one end of the pressing pipe is connected with the metal circular plate so that the metal circular plate can be tightly pressed at the containing position of the supporting plate; an anti-loosening piece is further installed between the outer ring and the inner threaded pipe. According to the clamping tool, the metal circular plate can be clamped more stably, and the pressing force applied to all areas in the circumferential direction of the metal circular plate tends to be the same.

Description

Technical Field

[0001] The utility model belongs to the technical field of tooling fixtures, and particularly relates to a clamping tool for opening holes in a metal circular plate. Background Art

[0002] At present, the metal round plate clamping fixture used in the factory is a multi-claw clamp, such as Figure 1 As shown, the multiple clamping jaws 100 of the clamp respectively clamp different areas in the circumferential direction of the metal circular plate 3 , and when drilling, the drill bit drills a hole in the middle of the metal circular plate 3 .

[0003] During clamping, the operator needs to manipulate multiple clamping jaws 100 so that each clamping jaw 100 clamps the metal circular plate 3. Therefore, when clamping a metal circular plate 3, the operator needs to repeat the same operation of locking the clamping jaws 100 for many times, which is labor-intensive. Moreover, the ideal state is that the clamping force of each clamping jaw 100 on the metal circular plate 3 is the same. However, due to the inevitable error in manual operation, the clamping force of each clamping jaw 100 cannot be consistent, so the clamping force on different areas of the metal circular plate 3 in the circumferential direction is different. Utility Model Content

[0004] The utility model provides a clamping tool for opening a hole in a metal circular plate, which is used to solve the above technical problems raised in the background technology.

[0005] The utility model is realized by the following technical scheme: a clamping tool for opening a hole in a metal circular plate, comprising:

[0006] The base is provided with through holes for installing external bolts;

[0007] A support plate, the top surface of which has a placement position for placing the metal circular plate, the support plate is arranged on the top of the base, a convex ring surrounding the placement position is arranged on the edge of the top surface of the support plate, and an internal thread is arranged on the inner ring wall of the convex ring to form an internal threaded tube;

[0008] An annular plate, one side of which is provided with a coaxial externally threaded tube and an outer ring, the externally threaded tube is located inside the outer ring, and a gap is formed between the externally threaded tube and the outer ring;

[0009] A pressing tube, the outer wall of which is fixedly connected to the inner ring wall of the annular plate, and one end of the pressing tube extends out of the external threaded tube and the outer ring;

[0010] The internally threaded tube is inserted into the gap and threadedly connected to the externally threaded tube, and one end surface of the pressing tube is connected to the metal circular plate to press the metal circular plate tightly against the placement position of the support plate;

[0011] An anti-loosening component is also installed between the outer ring and the internal threaded tube.

[0012] Further, in order to better realize the utility model, the base includes a circular plate-shaped seat body and a cylindrical seat body, the cylindrical seat body is arranged on the top surface of the circular plate-shaped seat body, and the circular plate-shaped seat body and the cylindrical seat body are coaxial;

[0013] The through holes are formed on the disc-shaped seat body, and there are multiple through holes, which are evenly distributed around the cylindrical seat body;

[0014] The support plate is arranged on the top surface of the cylindrical seat body.

[0015] Furthermore, in order to better implement the present utility model, reinforcing ribs are provided between the support plate and the circular plate-shaped seat body, and the reinforcing ribs are located directly below the placement position.

[0016] Furthermore, in order to better realize the utility model, the base is provided with a first through hole penetrating the disc-shaped seat body and the cylindrical seat body, the placement position of the support plate is provided with a second through hole corresponding to the first through hole, and the first through hole is located at the center of the placement position;

[0017] The base also includes a wooden pad, which is placed in the first through hole and the second through hole, and is cushioned under the metal circular plate.

[0018] Furthermore, in order to better implement the present utility model, the pressure tube includes:

[0019] A stainless steel tube, one end of which is fixedly connected to the annular plate;

[0020] A pressing ring is installed at the other end of the stainless steel pipe, and the pressing ring is connected to the metal circular plate.

[0021] Furthermore, in order to better implement the utility model, the top surface of the support plate is also provided with an inner ring coaxial with the convex ring, the interior of the inner ring forms the placement position, and the height of the inner ring is one third of the thickness of the metal circular plate.

[0022] Furthermore, in order to better implement the present utility model, the anti-loosening member includes:

[0023] A hand-tightening bolt, wherein the outer ring is provided with a screw hole, and the hand-tightening bolt is screwed into the screw hole. When tightened, the hand-tightening bolt presses against the outer wall of the internally threaded tube.

[0024] Furthermore, in order to better implement the present invention, a block is protruding from the outer ring wall of the outer ring, and the screw hole passes through the block.

[0025] Furthermore, in order to better implement the present invention, the outer ring wall of the outer ring is also protruded with a cylinder for connecting the extension rod, and the axial direction of the cylinder is in the same direction as the radial direction of the outer ring.

[0026] Compared with the prior art, the utility model has the following beneficial effects:

[0027] The clamping tool for opening a hole in a metal circular plate provided by the utility model comprises a base, a support plate, an annular plate and a pressing tube. The base is provided with a through hole for installing an external bolt. When in use, the entire clamping tool is fixed on a fixed table or a workbench of a machine tool by means of the external bolt. The top surface of the support plate has a placement position for placing the metal circular plate. The support plate is arranged on the top of the base. A convex ring surrounding the placement position is arranged on the edge of the top surface of the support plate. An internal thread is arranged on the inner ring wall of the convex ring to form an internal threaded tube. One side of the plate is provided with an external threaded tube and an outer ring, the external threaded tube and the outer ring are coaxially arranged, the external threaded tube is located on the inner side of the outer ring, a gap is formed between the external threaded tube and the outer ring, the outer wall of the pressing tube is fixedly connected to the inner ring wall of the annular plate, one end of the pressing tube extends out of the external threaded tube and the outer ring, the internal threaded tube is inserted in the gap and screwed with the external threaded tube, one end face of the pressing tube is connected to the metal circular plate to press the metal circular plate tightly in the placement position of the support plate, and a locking piece is also installed between the outer ring and the internal threaded tube. The above-mentioned annular plate, external threaded tube, outer ring and pressing tube constitute a gland.

[0028] When in use, first place the metal circular plate in the placement position, and then install the pressure cover. Specifically, screw the above-mentioned external threaded tube to the above-mentioned internal threaded tube until the end of the pressure tube contacts the top surface of the metal circular plate, and continue to twist the above-mentioned pressure cover. With the help of the thread pre-tightening force between the internal threaded tube and the external threaded tube, the end of the pressure tube tightly presses the metal circular plate on the top surface of the support plate, and then use the anti-loosening part to lock the outer ring on the above-mentioned internal threaded tube to prevent the pressure cover from loosening without reason. When drilling, the drill bit of the drilling equipment passes through the inner ring hole of the above-mentioned annular plate and the inner hole of the above-mentioned pressure tube and then acts on the metal circular plate. After the drilling is completed, loosen the above-mentioned anti-loosening part and unscrew the pressure cover, and the metal circular plate with the hole drilled can be taken out.

[0029] Through the above structure, when the clamping tool for opening a hole in a metal circular plate provided by the utility model is used to clamp the metal circular plate, it is only necessary to twist the pressure cover composed of the above-mentioned annular plate, externally threaded tube, outer ring and pressing tube, and the operation is simpler and more convenient. Moreover, the contact surface between the end face of the pressing tube and the above-mentioned metal circular plate is a complete circle of 360°, so that a clamping force is applied to the metal circular plate over the entire circular area of ​​360°, so that the clamping force borne by the metal circular plate in various areas in the circumferential direction is more similar, which is more conducive to clamping the metal circular plate and ensuring the quality of the hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a schematic diagram of the structure of a multi-claw clamp in the prior art clamping a metal circular plate;

[0032] Figure 2 It is a structural schematic diagram of a clamping tool for opening a hole in a metal circular plate provided by an embodiment of the utility model;

[0033] Figure 3 It is a cross-sectional view of a clamping tool for opening a hole in a metal circular plate provided by an embodiment of the utility model;

[0034] Figure 4 yes Figure 3 A local enlarged view of area A;

[0035] Figure 5 It is an exploded view of a clamping tool for opening a hole in a metal circular plate provided by an embodiment of the utility model;

[0036] Figure 6 It is a schematic diagram of the structure of the gland in the embodiment of the utility model;

[0037] Figure 7 yes Figure 6 A cross-sectional view of the gland shown;

[0038] Figure 8 It is a schematic diagram of a structure composed of a support plate, a convex ring and an inner ring in an embodiment of the utility model;

[0039] Fig. 9 yes Figure 8 A cross-sectional view of the structure shown.

[0040] In the figure:

[0041] 1-base; 101-circular plate-shaped seat; 1011-through hole; 102-cylindrical seat; 103-reinforcement ribs; 104-wooden pad; 2-support plate; 3-metal circular plate; 4-convex ring; 5-annular plate; 6-externally threaded pipe; 7-outer ring; 8-pressing pipe; 81-stainless steel pipe; 82-pressing ring; 9-hand-tightening bolt; 10-inner ring; 11-block; 12-cylinder; 100-clamping claw. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0043] Embodiment 1:

[0044] like Figure 2-Figure 9 As shown, the clamping tool for opening a hole in a metal circular plate provided in this embodiment includes a base 1, a support plate 2, an annular plate 5 and a pressing tube 8, wherein:

[0045] The base 1 is provided with a through hole 1011 for installing an external bolt. When in use, the entire clamping tool is fixed on a fixed table or a workbench of a machine tool by means of the external bolt. Optionally, the base 1 in this embodiment includes a circular plate-shaped base body 101 and a cylindrical 12-shaped base body 102. The cylindrical 12-shaped base body 102 is integrally formed and arranged on the top surface of the circular plate-shaped base body 101. The cylindrical 12-shaped base body 102 is integrally formed with the circular plate-shaped base body 101. The outer diameter of the cylindrical 12-shaped base body 102 is three quarters of that of the circular plate-shaped base body 101. In order to enhance the structural strength, in this embodiment, a reinforcing rib 103 is also welded between the above-mentioned support plate 2 and the above-mentioned circular plate-shaped base body 101.

[0046] The top surface of the above-mentioned support plate 2 is a plane, and a placement position for placing the metal circular plate 3 is provided in the middle of the top surface of the tray. The support plate 2 is welded or integrally formed on the top surface of the above-mentioned cylindrical 12-shaped seat body 102, so that the tray is located on the top of the above-mentioned base 1. A convex ring 4 surrounding the above-mentioned placement position is integrally formed on the edge of the top surface of the support plate 2, and an internal thread is provided on the inner ring wall of the convex ring 4 so that the convex ring 4 forms an internal threaded tube.

[0047] The annular plate 5 is a circular ring-shaped plate, and an external threaded tube 6 and an outer ring 7 are provided on one side of the annular plate 5. The external threaded tube 6 and the outer ring 7 are coaxially arranged, and the external threaded tube 6 is located on the inner side of the outer ring 7, and the height of the external threaded tube 6 is smaller than the outer ring 7. A gap is formed between the external threaded tube 6 and the outer ring 7, that is, the external threaded tube 6 and the outer ring 7 are not arranged closely.

[0048] The pressing tube 8 is a straight tube, the outer wall of which is fixedly connected to the inner wall of the annular plate 5, and one end of the pressing tube 8 extends out of the external threaded tube 6 and the outer ring 7, that is, the height of the pressing tube 8 is greater than the outer ring 7. The end surface of the pressing tube 8 extending out of the outer ring 7 is a plane for pressing the metal circular plate 3. The internal threaded tube is inserted into the gap and screwed with the external threaded tube 6, and one end surface of the pressing tube 8 is connected to the metal circular plate 3 to press the metal circular plate 3 on the placement position of the support plate 2.

[0049] A locking piece is also installed between the outer ring 7 and the inner threaded tube. The annular plate 5, the outer threaded tube 6, the outer ring 7 and the pressure tube 8 form a gland.

[0050] When in use, first place the metal circular plate 3 in the placement position, and then install the pressure cover. Specifically, the above-mentioned external threaded tube 6 is screwed to the above-mentioned internal threaded tube until the end of the pressure tube 8 contacts the top surface of the metal circular plate 3, and the above-mentioned pressure cover is continued to be twisted. With the help of the thread pre-tightening force between the internal threaded tube and the external threaded tube 6, the end of the pressure tube 8 tightly presses the metal circular plate 3 on the top surface of the support plate 2, and then the outer ring 7 is locked on the above-mentioned internal threaded tube using a locking piece to prevent the pressure cover from loosening without reason. When drilling, the drill bit of the drilling equipment passes through the inner ring hole of the above-mentioned annular plate 5 and the inner hole of the above-mentioned pressure tube 8 and acts on the metal circular plate 3. After the drilling is completed, the above-mentioned locking piece is loosened and the pressure cover is screwed off, and the metal circular plate 3 with the hole drilled can be taken out.

[0051] Through the above structure, when the clamping tool for opening a hole in a metal circular plate provided in this embodiment is used to clamp the metal circular plate 3, it is only necessary to twist the pressure cover composed of the above-mentioned annular plate 5, externally threaded tube 6, outer ring ring 7 and pressing tube 8, which is simpler and more convenient to operate. Moreover, the contact surface between the end face of the pressing tube 8 and the above-mentioned metal circular plate 3 is a complete circle of 360°, thereby applying a clamping force to the metal circular plate 3 over the entire circular area of ​​360°, so that the clamping force borne by the metal circular plate 3 in various areas in the circumferential direction is more similar, which is more conducive to clamping the metal circular plate 3 and ensuring the quality of the hole.

[0052] Optionally, a first through hole penetrating the disc-shaped seat body 101 and the cylindrical 12-shaped seat body 102 is provided in the base 1, and a second through hole corresponding to the first through hole is provided in the placement position of the support plate 2, and the first through hole is located at the center of the placement position. A matching wooden pad 104 is also installed in the first through hole and the second through hole, and the top surface of the wooden pad 104 is flush with the top surface of the support plate 2. When the metal circular plate 3 is placed on the top surface of the support plate 2, the wooden pad 104 is placed under the metal circular plate 3. When the drilling tool drills a hole in the middle of the metal circular plate 3, the wooden pad 104 provides support force to the middle position of the metal circular plate 3, so that the middle position of the metal circular plate 3 will not be suspended during drilling, thereby making the drilling process smoother. The wooden pad 104 is actually a piece of wood. When the metal circular plate 3 is pressed by the pressing tube 8, the metal circular plate 3 will also press the wooden pad 104.

[0053] In order to reduce the probability of the pressing tube 8 crushing or pressing out an indentation on the metal circular plate 3, the pressing tube 8 in this embodiment includes a stainless steel tube 81 and a pressing ring 82. One end of the stainless steel tube 81 is welded and fixed to the annular plate 5. The pressing ring 82 can be a wooden ring plate. The pressing ring 82 can be bonded to one end of the stainless steel tube 81 by bonding. In order to make the connection of the pressing ring 82 to one end of the stainless steel tube 81 more firmly, the top surface of the pressing ring 82 in this embodiment is provided with an annular groove compatible with the stainless steel tube 81. One end of the stainless steel tube 81 is screwed into the annular groove, and glue is pre-filled in the annular groove. When one end of the stainless steel tube 81 is screwed into the annular groove, one end of the stainless steel tube 81 is also bonded and fixed to the groove wall and the bottom of the annular groove by glue.

[0054] More preferably, an inner ring 10 coaxial with the convex ring 4 is integrally formed on the top surface of the support plate 2, and the interior of the inner ring 10 forms the placement position. Specifically, the inner ring 10 is a circle, and its inner diameter is adapted to the outer diameter of the metal circular plate 3 to be punched. When in use, the metal circular plate 3 is placed in the inner ring 10, so that the inner ring 10 is used to position the metal circular plate 3. The height of the inner ring 10 is one-third of the thickness of the metal circular plate 3, or the height of the inner ring 10 is 1 mm. When in use, the inner ring 10 actually plays a positioning role, so that the operator can more conveniently place the metal circular plate 3 in the accurate position of the clamping tooling.

[0055] In this embodiment, the external threaded tube 6 corresponds to the inner ring 10. After the metal circular plate 3 is placed in the placement position in the inner ring 10, due to the setting of the inner ring 10, a gap is formed between the circumferential outer wall of the metal circular plate 3 and the inner ring wall of the convex ring 4. The width of the gap is greater than the wall thickness of the external threaded tube 6, that is, the gap allows the internal threaded tube to extend in and out. The more important role of the gap is to facilitate the operator to take out the metal circular plate 3 with holes. Specifically, after the metal circular plate 3 is punched, the pressure cover is first removed, and then the clamping arms of the clamping tool are extended into the gaps on both sides of the metal circular plate 3, so that the clamping arms clamp the metal circular plate 3, and the metal circular plate 3 can be taken out.

[0056] An optional implementation of the present embodiment is as follows: the above-mentioned anti-loosening part includes a hand-tightening bolt 9, and a screw hole is opened in the above-mentioned outer ring ring 7. The screw hole penetrates the above-mentioned outer ring ring 7, and the hand-tightening bolt 9 is screwed in the above-mentioned screw hole. When locking, the hand-tightening bolt 9 presses against the outer wall of the above-mentioned internal threaded tube. When unlocking is required, the hand-tightening bolt 9 can be loosened.

[0057] Optionally, a block 11 is protruding from the outer ring wall of the outer ring 7, and the screw hole passes through the block 11. In this way, the length of the screw hole is longer and the number of thread turns of the screw hole can be set to be more, so that the hand-tightened bolt 9 is more secure when tightening the internal threaded tube.

[0058] Preferably, a cylinder 12 is protruded from the outer ring wall of the outer ring 7, and the cylinder 12 is used to insert an extension rod. The axial direction of the cylinder 12 is in the same direction as the radial direction of the outer ring 7, and the cylinder 12 is located in the middle of the outer ring 7. The extension rod is actually a steel pipe. When it is inserted into the cylinder 12, the length of the force arm that applies torque on the gland is increased, so that the operator can twist the gland more easily. Optionally, the cylinder 12 and the block 11 in this embodiment are respectively arranged on both sides of the outer ring 7.

[0059] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope recorded in the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A clamping tool for opening a hole in a metal circular plate, characterized in that: include: The base is provided with through holes for installing external bolts; A support plate, the top surface of which has a placement position for placing the metal circular plate, the support plate is arranged on the top of the base, a convex ring surrounding the placement position is arranged on the edge of the top surface of the support plate, and an internal thread is arranged on the inner ring wall of the convex ring to form an internal threaded tube; An annular plate, one side of which is provided with a coaxial externally threaded tube and an outer ring, the externally threaded tube is located inside the outer ring, and a gap is formed between the externally threaded tube and the outer ring; A pressing tube, the outer wall of which is fixedly connected to the inner ring wall of the annular plate, and one end of the pressing tube extends out of the external threaded tube and the outer ring; The internally threaded tube is inserted into the gap and threadedly connected to the externally threaded tube, and one end surface of the pressing tube is connected to the metal circular plate to press the metal circular plate tightly against the placement position of the support plate; An anti-loosening component is also installed between the outer ring and the internal threaded tube.

2. The clamping tool for punching a hole in a metal circular plate according to claim 1, characterized in that: The base comprises a disc-shaped base body and a cylindrical base body, wherein the cylindrical base body is arranged on the top surface of the disc-shaped base body, and the disc-shaped base body and the cylindrical base body are coaxial; The through holes are formed on the disc-shaped seat body, and there are multiple through holes, which are evenly distributed around the cylindrical seat body; The support plate is arranged on the top surface of the cylindrical seat body.

3. The clamping tool for punching a hole in a metal circular plate according to claim 2, characterized in that: A reinforcing rib is also provided between the support plate and the circular plate-shaped seat body, and the reinforcing rib is located directly below the placement position.

4. The clamping tool for punching a hole in a metal circular plate according to claim 2, characterized in that: The base is provided with a first through hole penetrating the disc-shaped base body and the cylindrical base body, the placement position of the support plate is provided with a second through hole corresponding to the first through hole, and the first through hole is located at the center of the placement position; The base also includes a wooden pad, which is placed in the first through hole and the second through hole, and is cushioned under the metal circular plate.

5. The clamping tool for punching a hole in a metal circular plate according to claim 4, characterized in that: The pressure pipe comprises: A stainless steel tube, one end of which is fixedly connected to the annular plate; A pressing ring is installed at the other end of the stainless steel pipe, and the pressing ring is connected to the metal circular plate.

6. The clamping tool for punching a hole in a metal circular plate according to any one of claims 1 to 5, characterized in that: The top surface of the support plate is also provided with an inner ring coaxial with the convex ring, the interior of the inner ring forms the placement position, and the height of the inner ring is one third of the thickness of the metal circular plate.

7. The clamping tool for punching a hole in a metal circular plate according to any one of claims 1 to 5, characterized in that: The anti-loosening member comprises: A hand-tightening bolt, wherein the outer ring is provided with a screw hole, and the hand-tightening bolt is screwed into the screw hole. When tightened, the hand-tightening bolt presses against the outer wall of the internally threaded tube.

8. The clamping tool for punching a hole in a metal circular plate according to claim 7, characterized in that: The outer ring wall of the outer ring is also protruded with a square block, and the screw hole passes through the square block.

9. The clamping tool for punching a hole in a metal circular plate according to claim 8, characterized in that: The outer ring wall of the outer ring is also convexly provided with a cylinder for connecting the extension rod, and the axial direction of the cylinder is in the same direction as the radial direction of the outer ring.

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