CNC scraping device

Abstract

The CNC scraping device comprises a clamping mechanism and a cutter, the clamping mechanism comprises a support and a fixed end, the fixed end is arranged at the end, close to the cutter, of the support, and the other end of the support is detachably connected with a CNC main shaft. The fixed end is provided with a first positioning hole matched with the cutter, the front face and the side face of the fixed end are each provided with a plurality of second screws, the second screws penetrate through the fixed end to make contact with the cutter, and the cutter is attached to the inner wall of the first positioning hole. The device can stably clamp the cutter, the dynamic balance performance of the cutter is improved, the device is suitable for high-smoothness metal surface scraping machining, meanwhile, the cutter is convenient to replace, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of CNC processing, in particular to a CNC scraping device. Background Art

[0002] Metal buttons have a wide range of applications, and are also widely used in the field of smart terminals. Smart terminals have very high requirements for the surface finish of metal buttons. In order to improve the surface finish of metal buttons, scrapers are usually used in the CNC processing process to scrape and finish the metal buttons. The existing scraping method is to directly fasten the scraper to the spindle of the CNC machine and complete the scraping process by moving the spindle. When assembling the scraper on the spindle, the prior art generally adopts elastic clamping or thermal expansion and contraction clamping methods. The clamping force of the elastic clamping is small, and the dynamic balance performance of the scraper is poor. When performing the scraping process, the scraper will produce a large amplitude of vibration, so that the surface of the workpiece after processing has knife marks, which cannot meet the scraping process requirements of high finish. The clamping force of the thermal expansion and contraction type is large, and the clamping force is evenly distributed. The dynamic balance performance of the scraper is good, but it is inconvenient to replace the scraper, and the scraper assembly process requires heating of the components, which is dangerous. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a CNC scraping device.

[0004] The technical solution of the utility model is: a CNC scraping device includes a clamping mechanism and a tool, the clamping mechanism includes a bracket and a fixed end, the bracket is provided with a fixed end at one end close to the tool, and the other end of the bracket is detachably connected to the CNC spindle; the fixed end is provided with a first positioning hole that matches the tool, and a plurality of second screws are provided on the front and side faces of the fixed end, the second screws pass through the fixed end and contact the tool, and the tool fits with the inner wall of the first positioning hole.

[0005] Furthermore, the tool includes a tool head and a tool handle, and the tool head and the tool handle are integrated; the tool head is provided with a cutting edge that matches the outer contour of the workpiece, and the tool handle matches the first positioning hole.

[0006] Furthermore, the first positioning hole passes through the fixed end, and the knife handle passes through the fixed end through the first positioning hole.

[0007] Furthermore, a plurality of air gaps with the same spacing are provided at the edge of the first positioning hole.

[0008] Furthermore, the bracket is triangular in shape, the tip of the bracket is provided with a fixed end, and the flat end of the bracket is detachably connected to the CNC spindle.

[0009] Furthermore, the flat end is provided with a plurality of first screws, which pass through the bracket and are threadedly connected to the CNC spindle.

[0010] Furthermore, the bracket is provided with a second positioning hole corresponding to the first positioning hole, and the second positioning hole passes through the bracket.

[0011] Compared with the prior art, the utility model has the advantages that the detachable clamping mechanism facilitates the assembly and disassembly of the device as a whole with the CNC spindle. The relative position of the tool and the clamping mechanism can be quickly confirmed through the first positioning hole, and the tool is uniformly applied with external force through multiple sets of second screws on the front and side surfaces, so that the horizontal and vertical positions of the tool handle are tightened and locked, and the locking force is large, which prevents the tool from vibrating during operation and improves the dynamic balance performance of the tool. By controlling the screwing in and out of the second screw, it is convenient to replace the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] 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.

[0013] Figure 1 It is a schematic diagram of the assembly of the utility model as a whole and the processed parts;

[0014] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0015] Figure 3 This is a schematic diagram of the clamping mechanism of the utility model;

[0016] Figure 4 for Figure 3 The enlarged view of point B in the middle;

[0017] Figure 5 It is a schematic diagram of a tool of the utility model.

[0018] Among them: 1. clamping mechanism; 2. tool; 3. workpiece; 11. bracket; 12. fixed end; 111. first screw; 112. second positioning hole; 121. second screw; 122. first positioning hole; 123. air gap; 21. tool head; 22. tool handle; 211. cutting edge. DETAILED DESCRIPTION

[0019] 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 clearly and completely 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 embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0020] The specific implementation of the utility model will be described below in conjunction with the accompanying drawings:

[0021] like Figures 1 to 5 As shown, a CNC scraping device includes a clamping mechanism 1 and a tool 2. The clamping mechanism 1 includes a bracket 11 and a fixed end 12. The bracket 11 is provided with a fixed end 12 at one end close to the tool 2, and the other end of the bracket 11 is detachably connected to the CNC spindle. The detachable bracket 11 facilitates the installation and disassembly of the device as a whole. The fixed end 12 is provided with a first positioning hole 122 that matches the tool 2. The front and side surfaces of the fixed end 12 are provided with a plurality of second screws 121. The second screws 121 pass through the fixed end 12 and contact the tool 2, and the tool 2 fits the inner wall of the first positioning hole 122. The edge of the first positioning hole 122 is provided with a plurality of air gaps 123 with the same spacing. When liquid penetrates into the contact surface between the tool 2 and the first positioning hole 122, due to the tension of the liquid, an adsorption effect may be formed between the tool 2 and the inner wall of the first positioning hole 122, which makes it difficult for the tool 2 to slide out of the first positioning hole 122. The air gap 123 prevents the tool 2 from completely fitting against the inner wall of the first positioning hole 122, and air can pass through the air gap 123 to destroy the adsorption effect between the tool 2 and the inner wall of the first positioning hole 122 caused by the infiltration of liquid, thereby preventing the tool 2 from being adsorbed in the first positioning hole 122. The front and side surfaces of the tool 2 are acted upon by the multiple sets of second screws 121, so that the tool 2 is evenly stressed and its horizontal position remains stable.

[0022] When the bracket 11 is triangular, the tip of the bracket 11 is provided with a fixed end 12, and the bracket 11 has better stability at this time. It can ensure that the device as a whole remains stable during normal operation, so that the tool 2 can reduce vibration. The side of the bracket 11 away from the tip is a flat end, and a plurality of first screws 111 are provided on the flat end. The first screws 111 pass through the bracket 11 and are threadedly connected to the CNC spindle. The bracket 11 is detachably connected to the CNC spindle through the first screws 111. A second positioning hole 112 is provided at the flat end corresponding to the first positioning hole 122, and the second positioning hole 112 passes through the bracket 11. CNC processing requires different types of tools 2 for different types of workpieces 3, and the second positioning hole 112 facilitates the longer tool 2 to adjust the distance in the vertical direction.

[0023] The tool 2 includes a cutter head 21 and a handle 22. The cutter head 21 and the handle 22 are integrated. The integrated cutter head 21 and the handle 22 ensure the stability of the overall structure of the tool 2 and reduce the influence of the assembly gap on the use process of the tool 2. The cutter head 21 is provided with a cutting edge 211 that matches the outer contour of the workpiece 3. The cutter head 21 scrapes the surface of the workpiece 3. The cutting edge 211 can ensure the processing quality of the surface of the workpiece 3 while reducing the resistance of the tool 2 during operation and weakening the vibration of the tool 2. Through the cooperation of the handle 22 and the first positioning hole 122, the horizontal position of the tool 2 and the clamping mechanism 1 can be quickly determined, which is convenient for installing the tool 2. The first positioning hole 122 passes through the fixed end 12, and the handle 22 passes through the fixed end 12 through the first positioning hole 122, which is convenient for changing the vertical height of the tool 2 and adjusting the distance between the cutter head 21 and the workpiece 3.

[0024] The working principle of the specific implementation of the utility model is as follows: the bracket 11 is assembled to the CNC spindle by the first screw 111. Then, a suitable tool 2 is selected according to the workpiece 3, the tool handle 22 is assembled to the first positioning hole 122, the tool 2 is adjusted to a suitable height, and then the second screws 121 on the front and side of the fixed end 12 are tightened, so that the second screws 121 support the side of the tool handle 22, and the tool handle 22 is close to the inner wall of the first positioning hole 122. The CNC spindle drives the bracket 11 to move, and the bracket 11 drives the tool 2 to scrape the surface of the workpiece 3.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A CNC scraping device, characterized in that: The invention comprises a clamping mechanism (1) and a tool (2), wherein the clamping mechanism (1) comprises a bracket (11) and a fixed end (12), wherein the fixed end (12) is provided at one end of the bracket (11) close to the tool (2), and the other end of the bracket (11) is detachably connected to a CNC spindle; the fixed end (12) is provided with a first positioning hole (122) for matching the tool (2), and a plurality of second screws (121) are provided on the front and side surfaces of the fixed end (12), wherein the second screws (121) pass through the fixed end (12) and contact the tool (2), and the tool (2) is fitted with the inner wall of the first positioning hole (122).

2. The CNC scraping device according to claim 1, characterized in that: The tool (2) comprises a tool head (21) and a tool handle (22), wherein the tool head (21) and the tool handle (22) are integrated; the tool head (21) is provided with a cutting edge (211) that matches the outer contour of the workpiece (3), and the tool handle (22) matches the first positioning hole (122).

3. The CNC scraping device according to claim 2, characterized in that: The first positioning hole (122) passes through the fixed end (12), and the knife handle (22) passes through the fixed end (12) via the first positioning hole (122).

4. The CNC scraping device according to claim 1, characterized in that: The edge of the first positioning hole (122) is provided with a plurality of air gaps (123) with the same spacing.

5. The CNC scraping device according to claim 1, characterized in that: The bracket (11) is provided with a second positioning hole (112) corresponding to the first positioning hole (122), and the second positioning hole (112) passes through the bracket (11).

6. The CNC scraping device according to claim 1, characterized in that: The bracket (11) is triangular in shape, the tip of the bracket (11) is provided with the fixed end (12), and the flat end of the bracket (11) is detachably connected to the CNC spindle.

7. The CNC scraping device according to claim 6, characterized in that: The flat end is provided with a plurality of first screws (111), and the first screws (111) pass through the bracket (11) and are threadedly connected to the CNC spindle.

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