Irregular workpiece trepanning tool

Abstract

The utility model discloses an irregular workpiece trepanning tool, and relates to the technical field of machining, the irregular workpiece trepanning tool comprises a positioning disc, the center of the lower surface of the positioning disc extends downwards to form a connecting part, and a positioning structure is arranged on one side of the upper surface of the positioning disc. Through cooperative arrangement of the positioning disc, the screw rod, the positioning block, the positioning groove and other structures, during use, the positioning block is detachably connected to the positioning disc through the screw rod and the first nut, and the protruding part of the irregular workpiece is embedded into the positioning groove, so that the center of the hole opening position of the irregular workpiece just coincides with the circle center of the positioning disc; then the irregular workpiece is fixed, the positioning disc can be driven by a machine tool to rotate, the irregular workpiece rotates around the center of the hole forming position, and hole forming is conducted on the irregular workpiece, so that the problems that manual marking and manual positioning are generally adopted in an existing mode, efficiency is low, and precision is difficult to guarantee are avoided as much as possible; and the large-scale and high-precision production requirements cannot be met.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical processing, and in particular to a tool for drilling holes in irregular workpieces. Background Art

[0002] Workpieces have regular shapes and irregular shapes to meet different needs. When using some workpieces, it is necessary to make holes at specific positions of the workpieces to meet their functions or facilitate the installation of the workpiece. The hole punching tool is a device that assists the workpiece in making holes.

[0003] At present, manual marking and manual positioning are usually used to open holes in irregular workpieces. This is not only inefficient, but also difficult to ensure accuracy. It cannot meet the needs of large-scale, high-precision production. Therefore, there is an urgent need for a tooling that can adapt to the shape of irregular workpieces and improve the efficiency and accuracy of opening holes. Utility Model Content

[0004] The purpose of the utility model is to solve or at least alleviate the problem that the existing method of opening holes in irregular workpieces usually adopts manual marking and manual positioning, which is not only inefficient but also difficult to ensure accuracy and cannot meet the needs of large-scale and high-precision production.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A tool for opening holes in irregular workpieces, including a positioning plate extending downward from the center of the lower surface to form a connecting portion, a positioning structure being provided on one side of the upper surface of the positioning plate, and clamping and fixing components being installed on the positioning plates on both sides of the positioning structure, the positioning structure including a positioning block with through holes provided at both ends, a connecting piece welded to the positioning plate passing through the positioning block through the through holes and then the positioning block being detachably installed on the upper surface of the positioning plate, a positioning groove having an inner cavity size that matches the size of a protruding portion of the irregular workpiece being provided on the side wall of the positioning block close to the center of the positioning plate, and when the protruding portion of the irregular workpiece is embedded in the inner cavity of the positioning groove, the center of the irregular workpiece opening position coincides with the center of the positioning plate.

[0007] By adopting the above technical scheme, when in use, a positioning block matching the irregular workpiece that needs to be drilled is selected, and the positioning block is fixed on the positioning plate by means of a sliding column, a screw and a first nut, and the protruding part of the irregular workpiece is embedded in the inner cavity of the positioning groove provided on the positioning block, so that the center of the hole opening position of the irregular workpiece coincides with the center of the circle of the positioning plate, and then the clamping plate slidably connected on the screw cooperates with the second nut to fix the irregular workpiece on the positioning plate, and the positioning plate can be installed on the chuck of an external machine tool through the connecting part, and the irregular workpiece on the positioning plate is driven by the external machine tool to rotate around the center of the hole opening position to drill a hole in the irregular workpiece, thereby avoiding as much as possible the existing method of drilling holes in irregular workpieces, which usually adopts the method of manual marking and manual positioning, which is not only inefficient, but also difficult to ensure accuracy, and cannot meet the problems of large-scale and high-precision production needs.

[0008] Optionally, a metal ring is sleeved on the outer surface of the connecting part, the metal ring is welded to the connecting part, and three equally spaced slots are opened on the outer side wall of the metal ring.

[0009] By adopting the above technical solution, a metal ring is provided, and a clamping groove is opened on the circumferential side of the metal ring, so that the chuck jaws of the external machine tool can be clamped in the clamping groove, which greatly improves the clamping stability of the chuck jaws.

[0010] Optionally, the connecting member includes two slide posts welded to the upper surface of the positioning plate, the length of the two slide posts is less than the thickness of the positioning block, the top ends of the two slide posts extend upward to form a screw rod, and a first nut for clamping and fixing the positioning block is threaded onto the screw rod.

[0011] By adopting the above technical solution, a sliding column is provided to penetrate the positioning block through the through hole, and then the user screws the first nut on the screw rod to clamp and fix the positioning block on the positioning plate in cooperation with the upper surface of the positioning plate.

[0012] Optionally, the diameter of the screw is smaller than the inner diameter of the through hole formed on the positioning block, and the width of the first nut is larger than the inner diameter of the through hole.

[0013] By adopting the above technical solution, the diameter of the screw is smaller than the inner diameter of the through hole on the positioning block, which facilitates the screw to pass through the positioning block. The width of the first nut is larger than the inner diameter of the through hole, which can achieve clamping and fixing of the positioning block.

[0014] Optionally, the clamping and fixing assembly includes two screw rods symmetrically welded on the upper surface of the positioning plate, the two screw rods are slidably connected to the clamping plate, and the top ends of the two screw rods are threaded with second nuts.

[0015] By adopting the above technical solution, after the irregular workpiece is positioned by the positioning block, the user can slide the two clamping plates to the two sides of the upper surface of the irregular workpiece respectively, and then screw the two second nuts toward the bottom end of the screw rod to pressurize the two clamping plates to fit tightly against the upper surface of the irregular workpiece, thereby achieving the fixing of the irregular workpiece.

[0016] Optionally, a reinforcing ring with an annular structure is embedded in the connection between the clamping plate and the screw rod, and the clamping plate is sleeved on the screw rod through the reinforcing ring and is slidably connected to the screw rod.

[0017] By adopting the above technical solution, a reinforcement ring is set to reinforce the connection between the screw rod and the clamping plate, so as to avoid the problem of weak points formed in the middle part of the clamping plate due to the opening, and the clamping plate is prone to breakage in the middle part when subjected to force.

[0018] Optionally, ribs are provided on the lower surfaces of the clamping plates on both sides of the reinforcement ring, and the ribs are welded to the lower surfaces of the clamping plates.

[0019] By adopting the above technical solution, ribs are welded on the clamping plate to improve the bending resistance of the clamping plate, thereby greatly improving the clamping stability of the clamping plate.

[0020] Optionally, a plurality of positioning blocks and positioning grooves are provided according to the shape and size of the irregular workpiece.

[0021] By adopting the above technical solution and setting a plurality of positioning blocks, the user can select a suitable positioning block to be installed on the positioning plate when processing irregular workpieces of different shapes, and accurately position the workpiece through the positioning groove provided on the positioning block, which is convenient for the user to use.

[0022] In summary, the beneficial effects of this application are as follows:

[0023] The present application adopts the coordination setting between the positioning disk, the screw rod, the positioning block and the positioning groove. When in use, the positioning block is detachably connected to the positioning disk through the screw rod and the first nut, and the protruding part of the irregular workpiece is embedded in the positioning groove, so that the center of the hole opening position of the irregular workpiece coincides with the center of the circle of the positioning disk. Then, the irregular workpiece is fixed, and the positioning disk can be driven to rotate by the machine tool to make the irregular workpiece rotate around the center of its hole opening position to open a hole in the irregular workpiece, thereby avoiding the existing method of usually using manual marking and manual positioning, which is not only inefficient, but also difficult to ensure accuracy, and cannot meet the problems of large-scale and high-precision production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an exploded view of the overall structure of this application;

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the clamping plate of the present application;

[0026] Figure 3 It is a schematic diagram of the connection structure of the positioning plate, the connecting part and the metal ring of the present application.

[0027] Explanation of the accompanying drawings: 1. positioning plate; 2. connecting part; 3. metal ring; 4. slot; 5. sliding column; 6. screw; 7. positioning block; 8. through hole; 9. positioning groove; 10. first nut; 11. screw rod; 12. clamping plate; 13. reinforcement ring; 14. rib; 15. second nut. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-3 This application is described in further detail.

[0029] See also Figure 1-3 A tool for opening a hole in an irregular workpiece includes a positioning plate 1 whose lower surface center extends downward to form a connecting portion 2. When in use, the user can install the positioning plate 1 on a chuck of an external machine tool through the connecting portion 2.

[0030] A positioning structure for positioning the opening position of an irregular workpiece is provided on one side of the upper surface of the positioning disk 1. Clamping and fixing components are installed on the positioning disk 1 on both sides of the positioning structure. When the positioning is completed, the irregular workpiece can be fixed by the clamping and fixing components, and then the machine tool is started to drive the irregular workpiece fixed on the positioning disk 1 to rotate, so as to punch holes in the irregular workpiece.

[0031] The positioning structure includes a positioning block 7 with through holes 8 at both ends. The connecting piece welded on the positioning plate 1 passes through the positioning block 7 through the through holes 8, and then the positioning block 7 is detachably installed on the upper surface of the positioning plate 1. The detachable connection method is adopted, which is convenient for users to replace different positioning blocks 7 for installation according to different irregular workpieces.

[0032] A positioning groove 9 is provided on the side wall of the positioning block 7 close to the center of the positioning disk 1, and the size of the inner cavity is matched with the size of the protruding part of the irregular workpiece. When the protruding part of the irregular workpiece is embedded in the inner cavity of the positioning groove 9, the center of the hole opening position of the irregular workpiece coincides with the center of the positioning disk 1. Therefore, when the external machine tool drives the positioning disk 1 to rotate, it can drive the irregular workpiece to rotate around the center of the hole opening position, which is convenient for opening holes in irregular workpieces.

[0033] Reference Figure 1 and Figure 3 A metal ring 3 is sleeved on the outer surface of the connecting part 2, and the metal ring 3 is welded to the connecting part 2. Three equally spaced slots 4 are provided on the outer wall of the metal ring 3. The metal ring 3 is provided, and the slots 4 are provided on the periphery of the metal ring 3, so that the chuck jaws of the external machine tool can be engaged in the slots 4, which greatly improves the stability of the chuck jaws engagement.

[0034] Reference Figure 1 The connecting piece includes two slide posts 5 welded on the upper surface of the positioning plate 1. The length of the two slide posts 5 is less than the thickness of the positioning block 7. The top ends of the two slide posts 5 extend upward to form a screw rod 6. The screw rod 6 is screwed with a first nut 10 for clamping and fixing the positioning block 7. The slide post 5 is configured to penetrate the positioning block 7 through the through hole 8. Then the user screws the first nut 10 on the screw rod 6 to clamp and fix the positioning block 7 on the positioning plate 1 in cooperation with the upper surface of the positioning plate 1.

[0035] Reference Figure 1 The diameter of the screw rod 6 is smaller than the inner diameter of the through hole 8 provided on the positioning block 7, and the width of the first nut 10 is larger than the inner diameter of the through hole 8. The diameter of the screw rod 6 is smaller than the inner diameter of the through hole 8 provided on the positioning block 7, so that the screw rod 6 can be conveniently passed through the positioning block 7, and the width of the first nut 10 is larger than the inner diameter of the through hole 8, so that the positioning block 7 can be clamped and fixed.

[0036] Reference Figure 3 The clamping and fixing assembly includes two screw rods 11 symmetrically welded on the upper surface of the positioning plate 1, and the two screw rods 11 are slidably connected with a clamping plate 12, and the top of the two screw rods 11 are screwed with a second nut 15. After the irregular workpiece is positioned by the positioning block 7, the user can slide the two clamping plates 12 to the two sides of the upper surface of the irregular workpiece, and then screw the two second nuts 15 to the bottom end of the screw rod 11, pressurize the two clamping plates 12 to fit tightly with the upper surface of the irregular workpiece, and then fix the irregular workpiece.

[0037] Reference Figure 2 A reinforcing ring 13 of an annular structure is embedded in the connection between the clamping plate 12 and the screw rod 11, and the clamping plate 12 is sleeved on the screw rod 11 through the reinforcing ring 13 and is slidably connected with the screw rod 11. The reinforcing ring 13 is provided to reinforce the connection between the screw rod 11 and the clamping plate 12, and to avoid the problem that the middle part of the clamping plate 12 is prone to breakage due to the opening in the middle part when the clamping plate 12 is subjected to force.

[0038] Reference Figure 3 The lower surface of the clamping plate 12 on both sides of the reinforcement ring 13 is provided with ribs 14, and the ribs 14 are welded to the lower surface of the clamping plate 12. The ribs 14 are welded on the clamping plate 12 to improve the bending resistance of the clamping plate 12, which greatly improves the clamping stability of the clamping plate 12.

[0039] Reference Figure 1 , multiple positioning blocks 7 and positioning grooves 9 are provided according to the shape and size of the irregular workpiece. Multiple positioning blocks 7 are provided, so that when the user processes irregular workpieces of different shapes, he can select a suitable positioning block 7 to be installed on the positioning plate 1, and the positioning grooves 9 provided on the positioning blocks 7 can be used to accurately position the workpiece, which is convenient for the user.

[0040] The implementation principle of the present application is as follows: when in use, a positioning block 7 matching the irregular workpiece that needs to be drilled is selected, and the positioning block 7 is fixed on the positioning disk 1 through the sliding column 5, the screw 6 and the first nut 10, and the protruding part of the irregular workpiece is embedded in the inner cavity of the positioning groove 9 provided on the positioning block 7, so that the center of the hole opening position of the irregular workpiece coincides with the center of the circle of the positioning disk 1, and then the clamping plate 12 slidably connected on the screw 11 cooperates with the second nut 15 to fix the irregular workpiece on the positioning disk 1, and the positioning disk 1 can be installed on the chuck of an external machine tool through the connecting part 2, and the irregular workpiece on the positioning disk 1 is driven by the external machine tool to rotate around the center of the hole opening position, and the irregular workpiece is drilled, thereby avoiding the existing method of drilling holes in irregular workpieces as much as possible, usually adopting the method of manual marking and manual positioning, which is not only inefficient, but also difficult to ensure accuracy, and cannot meet the problem of large-scale and high-precision production needs.

[0041] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tool for drilling a hole in an irregular workpiece, comprising a positioning plate (1) whose lower surface center extends downward to form a connecting portion (2), a positioning structure being provided on one side of the upper surface of the positioning plate (1), and clamping and fixing components being installed on the positioning plate (1) on both sides of the positioning structure, characterized in that: The positioning structure comprises a positioning block (7) with through holes (8) at both ends, a connecting piece welded to the positioning plate (1) passes through the positioning block (7) through the through holes (8), and the positioning block (7) is detachably mounted on the upper surface of the positioning plate (1), a positioning groove (9) having an inner cavity size adapted to the size of the protruding portion of the irregular workpiece is formed on the side wall of the positioning block (7) on the side close to the center of the positioning plate (1), and when the protruding portion of the irregular workpiece is embedded in the inner cavity of the positioning groove (9), the center of the opening position of the irregular workpiece coincides with the center of the positioning plate (1).

2. The irregular workpiece hole punching tool according to claim 1, characterized in that: A metal ring (3) is sleeved on the outer surface of the connecting portion (2), the metal ring (3) is welded to the connecting portion (2), and three equally spaced slots (4) are provided on the outer wall of the metal ring (3).

3. The irregular workpiece hole punching tool according to claim 1, characterized in that: The connecting member comprises two slide posts (5) welded to the upper surface of the positioning plate (1), the length of the two slide posts (5) being less than the thickness of the positioning block (7), the top ends of the two slide posts (5) extending upward to form a screw rod (6), and a first nut (10) for clamping and fixing the positioning block (7) being screwed onto the screw rod (6).

4. The irregular workpiece hole punching tool according to claim 3, characterized in that: The diameter of the screw rod (6) is smaller than the inner diameter of the through hole (8) formed on the positioning block (7), and the width of the first nut (10) is larger than the inner diameter of the through hole (8).

5. The irregular workpiece hole punching tool according to claim 1, characterized in that: The clamping and fixing assembly comprises two screw rods (11) symmetrically welded to the upper surface of the positioning plate (1), the two screw rods (11) are slidably connected to a clamping plate (12), and the top ends of the two screw rods (11) are threaded with a second nut (15).

6. The irregular workpiece hole punching tool according to claim 5, characterized in that: A reinforcing ring (13) of an annular structure is embedded in the connection between the clamping plate (12) and the screw rod (11); the clamping plate (12) is sleeved on the screw rod (11) through the reinforcing ring (13) and is slidably connected to the screw rod (11).

7. The irregular workpiece hole punching tool according to claim 6, characterized in that: Ribs (14) are provided on the lower surfaces of the clamping plates (12) on both sides of the reinforcement ring (13), and the ribs (14) are welded to the lower surfaces of the clamping plates (12).

8. The irregular workpiece hole punching tool according to claim 1, characterized in that: A plurality of the positioning blocks (7) and the positioning grooves (9) are provided according to the shape and size of the irregular workpiece.

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