Metal plate chamfer grinding device

Abstract

The utility model discloses a metal plate chamfer grinding device relates to chamfer processing device technical field, including the seat body, coaxially slidingly arranged with mounting seat on it, the drill is rotationally arranged on the mounting seat, the seat body is obliquely slidably arranged with the positioning plate of the circumferential array distribution, the extension of the circumferential array distribution is fixedly arranged on the mounting seat, the low end of the sliding stroke of the positioning plate sliding is located to resist the plate member through -hole orifice, the mounting seat sliding is close to plate member through -hole orifice to make extension and push the positioning plate reset to the high end of the sliding stroke. The utility model provides a metal plate chamfer grinding device, utilizes positioning plate and mounting seat to make before chamfer operation the drill relative to plate member through -hole carries out the preposition, thereby improves the coaxial alignment of drill and plate member through -hole, and further improves the coaxiality of the chamfer obtained by grinding and the original through -hole, and is convenient for subsequent assembly operation.

Description

Technical Field

[0001] This utility model relates to the field of chamfering technology, specifically to a metal plate chamfering and grinding device. Background Technology

[0002] As is well known, when through holes are made in metal plates, it is often necessary to chamfer the hole opening to meet assembly requirements. Chamfering refers to making a beveled cut at the hole opening to remove burrs generated by machining.

[0003] For example, the utility model patent with application announcement number CN219130878U, application announcement date June 6, 2023, and titled "A Drill Bit Structure for Chamfering Flat Holes in Metal Plates," describes a chamfering processing device whose specific structure includes a mounting base, a positioning cylinder, a drill bit, and an external drive mechanism for fixing the mounting base. The mounting base is fixedly disposed at the bottom of the drive mechanism. The side surface of the mounting base has external threads, and the inner surface of the positioning cylinder has internal threads. The positioning cylinder is screwed to the external threads of the mounting base through the internal threads. A mounting groove is formed at the center of the bottom surface of the mounting base. The drill bit includes a mounting body and a chamfering cutter. The mounting body and the chamfering cutter are fixedly connected, and the drill bit is inserted into the mounting groove of the mounting base through the mounting body.

[0004] The shortcoming of the existing technology is that it uses a contact plate to abut against the surface of a metal plate, and then the mounting base, positioning cylinder and drill bit move downward to perform chamfering operation on the through hole opening of the metal plate. However, no positioning device is set on the contact base, and it relies solely on manual operation to roughly align the axis of the drill bit with the through hole of the metal plate. When the drill bit moves downward to perform chamfering, it is easy to make the coaxiality of the formed chamfer with the through hole of the metal plate poor, which is not conducive to subsequent assembly operations. Utility Model Content

[0005] The purpose of this invention is to provide a metal plate chamfering grinding device to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a metal plate chamfering grinding device, comprising a base, on which a mounting seat is slidably disposed coaxially, a drill bit is rotatably disposed on the mounting seat, a positioning plate arranged in a circumferential array is slidably disposed on the base, and an extension portion arranged in a circumferential array is fixedly disposed on the mounting seat, the positioning plate is slidably located at the lower end of its sliding stroke to abut against the opening of a through hole in the plate, and the mounting seat is slidably close to the opening of the through hole in the plate so that the extension portion pushes the positioning plate back to the higher end of its sliding stroke.

[0007] As a further description of the above technical solution: a sliding groove is provided on the base, and an elastic element is fixedly provided in the sliding groove to drive the positioning plate to slide towards the high end of its sliding stroke. A snap-fit ​​protrusion is provided in the sliding groove, and a snap-fit ​​part is provided on the positioning plate. The positioning plate is located at the low end of its sliding stroke so that the snap-fit ​​part abuts against the snap-fit ​​protrusion. The mounting base slides close to the through hole of the plate so that the extension pushes the snap-fit ​​part away from the snap-fit ​​protrusion.

[0008] As a further description of the above technical solution: the first end of the positioning plate is provided with an abutment groove for abutting the through hole opening of the plate.

[0009] As a further description of the above technical solution: the positioning plate is provided with a through groove that communicates with the abutment groove, the extension is slidably disposed in the fitting groove provided in the seat body, and the positioning plate is located at the high end of its sliding stroke so that the through groove and the fitting groove are aligned.

[0010] As a further description of the above technical solution: it also includes flexible strips arranged in a circumferential array and whose two ends are respectively connected and fixed to different positioning plates, wherein the positioning plates are located at the high end of their sliding stroke so that the flexible strips are stretched and extended and surround the drill bit.

[0011] As a further description of the above technical solution: the inner side of the flexible strip is fixedly provided with protrusions distributed in a circumferential array.

[0012] As a further description of the above technical solution: the base is made of stainless steel.

[0013] As a further description of the above technical solution: the positioning plate is a Teflon component.

[0014] As a further description of the above technical solution: the flexible strip is a high-temperature resistant rubber component.

[0015] As a further description of the above technical solution: the positioning plate is provided with a wear-resistant coating.

[0016] In the above technical solution, the present invention provides a metal plate chamfering grinding device, which uses a positioning plate and a mounting base to pre-position the drill bit relative to the through hole of the plate before the chamfering operation, thereby improving the coaxial alignment between the drill bit and the through hole of the plate, and further improving the coaxiality between the chamfer obtained by grinding and the original through hole, which facilitates subsequent assembly operations. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model; Figure 2 This is a schematic cross-sectional view of the overall structure provided for an embodiment of the present utility model; Figure 3 An overall exploded structural diagram provided for an embodiment of this utility model; Figure 4 An exploded view of the limiting plate, elastic element, and flexible strip provided in the embodiments of this utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Base; 11. Movable hole; 12. Sliding groove; 13. Snap-fit ​​protrusion; 14. Fitting groove; 2. Mounting base; 21. Extension; 3. Drill bit; 4. Positioning plate; 41. Abutment groove; 42. Snap-fit ​​part; 43. Through groove; 5. Elastic element; 6. Flexible belt; 61. Protrusion; 7. Drive assembly. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] Please see Figure 1-4 This utility model provides a technical solution: a metal plate chamfering grinding device, including a base 1, on which a mounting seat 2 is slidably disposed coaxially, a drill bit 3 is rotatably disposed on the mounting seat 2, a positioning plate 4 arranged in a circumferential array is slidably disposed on the base 1, and an extension 21 arranged in a circumferential array is fixedly disposed on the mounting seat 2. The positioning plate 4 is slidably located at the lower end of its sliding stroke to abut against the through hole opening of the plate, and the mounting seat 2 slides close to the through hole opening of the plate so that the extension 21 pushes the positioning plate 4 back to the higher end of its sliding stroke.

[0022] Preferred, such as Figure 2As shown, a drive assembly 7 for driving the drill bit 3 to rotate is also provided on the mounting base 2. The positioning plate 4 is inclined and slidably disposed in the base body 1. Before chamfering the through hole of the plate, the positioning plate 4 can be manually pulled out and slid to the low end of its sliding stroke. Then, the mounting base 2 is taken close to the through hole of the plate, so that several positioning plates 4 abut against the opening of the through hole of the plate, thereby completing the coaxial alignment of the drill bit 3 and the through hole of the plate. Then, the mounting base 2 is driven to move axially so that the drill bit 3 moves close to the through hole of the plate for chamfering. During the movement of the mounting base 2, the extension 21 pushes the positioning plate 4 back to the high end of the sliding stroke, so that the positioning plate 4 leaves the through hole of the plate before the drill bit 3 contacts the opening of the through hole of the plate, thereby avoiding the positioning plate 4 from interfering with the normal chamfering operation of the drill bit 3. The positioning plate 4 and the mounting base 2 are used to pre-position the drill bit 3 relative to the through hole of the plate before the chamfering operation, thereby improving the coaxial alignment between the drill bit 3 and the through hole of the plate, and thus improving the coaxiality between the chamfer obtained by grinding and the original through hole, which facilitates subsequent assembly operations.

[0023] The driving component 7 is a well-known technical knowledge among those skilled in the art, and will not be described in detail here.

[0024] In the above technical solution, the positioning plate 4 and the mounting base 2 are used to pre-position the drill bit 3 relative to the through hole of the plate before the chamfering operation, thereby improving the coaxial alignment between the drill bit 3 and the through hole of the plate, and thus improving the coaxiality between the chamfer obtained by grinding and the original through hole, which facilitates the subsequent assembly operation.

[0025] In another embodiment of this utility model, a sliding groove 12 is provided on the base 1, and an elastic member 5 is fixedly provided in the sliding groove 12 to drive the positioning plate 4 to slide towards the high end of its sliding stroke. A snap-fit ​​protrusion 13 is provided in the sliding groove 12, and a snap-fit ​​part 42 is provided on the positioning plate 4. The positioning plate 4 is located at the low end of its sliding stroke so that the snap-fit ​​part 42 abuts against the snap-fit ​​protrusion 13. The mounting base 2 slides close to the through hole of the plate so that the extension 21 pushes the snap-fit ​​part 42 to disengage from the snap-fit ​​protrusion 13.

[0026] Preferred, such as Figure 2As shown, a snap-fit ​​protrusion 13 is provided in the sliding groove 12, and a snap-fit ​​part 42 is provided on the positioning plate 4. Before chamfering, the positioning plate 4 can be manually pulled out from the base 1, so that the snap-fit ​​part 42 of the positioning plate 4 abuts against the snap-fit ​​protrusion 13. At this time, the positioning plate 4 is fixedly locked at the lower end of its sliding stroke. Then, the base 1 can be brought close to the plate so that the positioning plate 4 abuts against the opening of the through hole of the plate, completing the coaxial alignment of the drill bit 3 and the through hole of the plate. Then, the mounting base 2 drives the drill bit 3 to move closer to the opening of the through hole of the plate. At this time, the extension part 21 moves to push the snap-fit ​​part 42 away from the snap-fit ​​protrusion 13, and the elastic member 5 pulls the positioning plate 4 to slide towards the higher end of the sliding stroke of the positioning plate 4, so that before the drill bit 3 moves to perform chamfering, the positioning plate 4 moves away from the through hole of the plate to avoid interfering with the chamfering operation of the drill bit 3. The positioning plate 4 is automatically retracted by the presence of the snap-fit ​​part 42, the snap-fit ​​protrusion 13 and the elastic element 5, which facilitates actual chamfering operations.

[0027] Among them, the elastic element 5 can be replaced by any elastic object known to those skilled in the art, such as a spring, elastic plate, or airbag.

[0028] In another embodiment of the present invention, the first end of the positioning plate 4 is provided with an abutting groove 41 for abutting the through hole opening of the plate component.

[0029] Preferred, such as Figure 4 As shown, the lower end of the positioning plate 4 is the first end, and an abutment groove 41 is provided on the lower end of the positioning plate 4. When the positioning plate 4 is driven to slide to the lower end of its sliding stroke, the abutment groove 41 of the positioning plate 4 abuts against the opening of the through hole of the plate, thereby further improving the positioning stability of the positioning plate 4 relative to the through hole of the plate, and further improving the coaxiality between the drill bit 3 and the through hole of the plate.

[0030] In another embodiment of the present invention, the positioning plate 4 is provided with a through groove 43 that communicates with the abutment groove 41, and the extension 21 is slidably disposed in the fitting groove 14 opened in the seat body 1. The positioning plate 4 is located at the high end of its sliding stroke so that the through groove 43 is aligned with the fitting groove 14.

[0031] Preferred, such as Figure 2 As shown, a through groove 43 is provided on the positioning plate 4. When the mounting base 2 moves the drill bit 3 closer to the through hole opening of the plate, the extension 21 moves to push the locking part 42 away from the locking protrusion 13, and the elastic member 5 pulls the positioning plate 4 to slide towards the high end of the sliding stroke of the positioning plate 4. Then the mounting base 2 continues to slide so that the drill bit 3 continues to move closer to the through hole opening of the plate. At this time, the extension 21 of the mounting base 2 passes through the through groove 43 to move into the fitting groove 14, thereby reducing the accompanying vibration of the positioning plate 4 during the chamfering process of the drill bit 3 and improving the chamfering stability of the drill bit 3 on the through hole of the plate.

[0032] In another embodiment of the present invention, a flexible strip 6 is distributed in a circular array and its two ends are respectively connected and fixed to different positioning plates 4. The positioning plate 4 is located at the high end of its sliding stroke so that the flexible strip 6 is stretched and extended and surrounds the drill bit 3.

[0033] Preferred, such as Figure 1 As shown, the two ends of the flexible band 6 are respectively connected and fixed to different positioning plates 4, so that the flexible band 6 and the positioning plates 4 form a circle. In actual use, the flexible band 6 can be pulled to slide the positioning plate 4 to the lower sliding end to pull the positioning plate 4 out of the base 1, which facilitates the actual use of the positioning plate 4. When the mounting base 2 drives the drill bit 3 to move closer to the through hole of the plate, the extension 21 moves to push the locking part 42 to disengage from the locking protrusion 13, and the elastic member 5 pulls the positioning plate 4 to slide to the higher sliding end of the positioning plate 4. At this time, the positioning plate 4 pulls the flexible band 6 to extend and move closer to the inner wall of the movable hole 11 of the base 1, so that the flexible band 6 is located on the periphery of the drill bit 3, thereby avoiding the problem of the strip-shaped chips generated by the chamfer of the drill bit 3 entering the periphery of the drill bit 3 and being repeatedly agitated, which would damage the drill bit 3, and improving the protection of the drill bit 3.

[0034] In another embodiment of the present invention, a series of protrusions 61 arranged in a circular array are fixedly provided on the inner side of the flexible strip 6.

[0035] Preferably, the protrusion 61 is integrally formed with the flexible band 6. The protrusion 61 provided on the inner side of the flexible band 6 makes it easy to manually pick up the flexible band 6 to pull the positioning plate 4, and can also further improve the blocking effect on the strip-shaped chips generated by the chamfering of the drill bit 3.

[0036] In another embodiment of this utility model, the base 1 is made of stainless steel.

[0037] Preferably, the base 1 is made of stainless steel to improve its compressive strength and corrosion resistance, thereby increasing its service life.

[0038] In another embodiment of this utility model, the positioning plate 4 is a Teflon component.

[0039] Preferably, the positioning plate 4 is made of Teflon to improve its wear resistance and corrosion resistance.

[0040] In another embodiment of this utility model, the flexible strip 6 is a high-temperature resistant rubber component.

[0041] Preferably, the flexible strip 6 is made of high-temperature resistant rubber to improve its service life.

[0042] In another embodiment of this utility model, the positioning plate 4 is provided with a wear-resistant coating.

[0043] Preferably, the positioning plate 4 is provided with a wear-resistant coating to further improve the wear resistance and service life of the positioning plate 4.

[0044] Working principle: Before performing chamfering, the positioning plate 4 can be manually pulled out from the base 1 so that the snap-fit ​​part 42 of the positioning plate 4 abuts against the snap-fit ​​protrusion 13. At this time, the positioning plate 4 is fixed and locked at the lower end of its sliding stroke. Then the base 1 can be brought close to the plate so that the positioning plate 4 abuts against the opening of the through hole of the plate, thus completing the coaxial alignment of the drill bit 3 and the through hole of the plate. Subsequently, the mounting base 2 moves the drill bit 3 closer to the through hole of the plate. At this time, the extension 21 moves to push the locking part 42 away from the locking protrusion 13, and the elastic member 5 pulls the positioning plate 4 to slide towards the high end of the sliding stroke of the positioning plate 4. This allows the positioning plate 4 to move away from the through hole of the plate before the drill bit 3 moves to perform the chamfering operation, so as to avoid interfering with the chamfering operation of the drill bit 3. The positioning plate 4 pulls the flexible band 6 to extend and move closer to the inner wall of the movable hole 11 of the base body 1, so that the flexible band 6 is located on the periphery of the drill bit 3, thereby preventing the strip-shaped chips generated by the chamfering of the drill bit 3 from entering the periphery of the drill bit 3.

[0045] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A metal plate chamfering grinding apparatus, comprising a base (1) on which a mounting seat (2) is slidably disposed coaxially, and a drill bit (3) is rotatably disposed on the mounting seat (2), characterized in that, The base (1) is inclined and slidably provided with positioning plates (4) arranged in a circular array. The mounting base (2) is fixedly provided with extensions (21) arranged in a circular array. The positioning plates (4) are slidably located at the lower end of their sliding stroke to abut against the through hole opening of the plate. The mounting base (2) is slidably close to the through hole opening of the plate so that the extensions (21) push the positioning plates (4) back to the higher end of their sliding stroke.

2. The metal plate chamfering grinding apparatus according to claim 1, characterized in that, The base (1) is provided with a sliding groove (12), and an elastic element (5) is fixedly provided in the sliding groove (12) to drive the positioning plate (4) to slide to the high end of its sliding stroke. A snap-fit ​​protrusion (13) is provided in the sliding groove (12), and a snap-fit ​​part (42) is provided on the positioning plate (4). The positioning plate (4) is located at the low end of its sliding stroke so that the snap-fit ​​part (42) abuts against the snap-fit ​​protrusion (13). The mounting base (2) slides close to the through hole of the plate so that the extension (21) pushes the snap-fit ​​part (42) away from the snap-fit ​​protrusion (13).

3. The metal plate chamfering grinding apparatus according to claim 1, characterized in that, The first end of the positioning plate (4) is provided with an abutting groove (41) for abutting the through hole opening of the plate.

4. The metal plate chamfering grinding apparatus according to claim 2, characterized in that, The positioning plate (4) has a through groove (43) that communicates with the abutment groove (41). The extension (21) is slidably disposed in the fitting groove (14) opened in the seat body (1). The positioning plate (4) is located at the high end of its sliding stroke so that the through groove (43) and the fitting groove (14) are aligned.

5. The metal plate chamfering grinding apparatus according to claim 1, characterized in that, It also includes flexible strips (6) arranged in a circular array and connected and fixed at both ends to different positioning plates (4). The positioning plates (4) are located at the high end of their sliding stroke so that the flexible strips (6) are stretched and extended and surround the drill bit (3).

6. The metal plate chamfering grinding apparatus according to claim 5, characterized in that, The inner side of the flexible strip (6) is fixedly provided with protrusions (61) arranged in a circular array.

7. The metal plate chamfering grinding apparatus according to claim 1, characterized in that, The base (1) is made of stainless steel.

8. The metal plate chamfering grinding apparatus according to claim 1, characterized in that, The positioning plate (4) is made of Teflon.

9. The metal plate chamfering grinding apparatus according to claim 5, characterized in that, The flexible strip (6) is a high-temperature resistant rubber component.

10. A metal plate chamfering grinding apparatus according to claim 8, characterized in that, The positioning plate (4) is provided with a wear-resistant coating.

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