Drill bit assembly for numerical control machine tool

Abstract

The utility model relates to the technical field of numerical control drill bits, and discloses a drill bit assembly for a numerical control machine tool, which comprises a drill bit main body, a convenient replacement mechanism is arranged at the bottom of the drill bit main body, the convenient replacement mechanism comprises a cutter handle connecting seat, and a cutter groove is arranged at the top of the cutter handle connecting seat. By means of the overall design of the convenient replacement mechanism, the end of the air blow gun is inserted into the protruding pipe opening and inflated, the positioning pin can be driven to be withdrawn from the inner cavity of the second through hole, then the drill bit body can be pulled out of the top of the cutter handle connecting base to be replaced, the air blow gun is withdrawn from the end of the protruding pipe opening, and then the drill bit body can be replaced. And through initial elasticity of the elastic piece, the positioning pin can be promoted to be inserted back into the replaced second through hole, namely, the drill bit main body is replaced, the bolt does not need to be disassembled and assembled in the process, the replacement speed of the drill bit main body is greatly increased, the labor intensity of workers is reduced, and the overall efficiency of drilling machining is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of CNC drill bit technology, specifically to a drill bit assembly for CNC machine tools. Background Technology

[0002] CNC machine tools, short for numerical control machine tools, are automated machine tools equipped with a program control system. The CNC machine tool logically processes programs with control codes or other symbolic instructions through the program control system, decodes them, represents them with coded numbers, and then inputs them to the CNC device via an information carrier. The CNC device processes the data and sends out various control signals to control the machine tool's movements, thereby automatically machining parts according to the shape and dimensions required by the drawings. In operation, a CNC machine tool can drive a drill assembly to machine deep holes in a workpiece.

[0003] When installing existing drill bits, the drill bit needs to be inserted into the connector, and then multiple bolts on the connector need to be tightened in sequence to complete the installation of the drill bit. When removing the drill bit, multiple bolts need to be loosened in sequence, which makes the process of replacing the drill bit cumbersome and affects the overall efficiency of drilling. Utility Model Content

[0004] The purpose of this utility model is to provide a drill bit assembly for CNC machine tools, which solves the problem that the process of replacing drill bits in the prior art is relatively cumbersome.

[0005] This utility model provides the following technical solution: a drill bit assembly for CNC machine tools, including a drill bit body, a convenient replacement mechanism provided at the bottom of the drill bit body, the convenient replacement mechanism including a tool holder connecting seat, a tool groove opened at the top of the tool holder connecting seat, a tool holder movably inserted into the inner cavity of the tool groove, the tool holder being fixedly connected to the bottom of the drill bit body, a second through hole opened on both the front and back of the tool holder, a first through hole opened on both the front and back of the tool holder connecting seat, a positioning pin movably inserted into the inner cavity of the first and second through holes, and a positioning seat fixedly installed at the bottom of the tool holder connecting seat.

[0006] As a preferred embodiment of the above technical solution, a support block is fixedly installed on the top of the positioning seat, a hollow block is fixedly installed on the outer wall of the support block, and branch cylinders are fixedly connected to both the front and back of the hollow block.

[0007] As a preferred embodiment of the above technical solution, a through groove plate is fixedly installed on the inner wall of the branch cylinder, an elastic element is fixedly connected to the center of the side of the through groove plate, and a sliding inner cylinder is fixedly connected to the end of the elastic element away from the through groove plate.

[0008] The above technical solution, through the design of the elastic element, facilitates the reset of the positioning disk after it has been driven to open and move.

[0009] As a preferred embodiment of the above technical solution, a rubber ring is fixedly connected to the outer wall of the sliding inner cylinder, the outer wall of the rubber ring is slidably connected to the inner wall of the branch cylinder, and a connecting arm is fixedly installed at the center of the side of the sliding inner cylinder.

[0010] As a preferred embodiment of the above technical solution, a limiting ring is fixedly installed on the inner wall of the branch cylinder, a positioning plate is fixedly connected to the end of the connecting arm away from the sliding inner cylinder, and the positioning pin is fixedly connected to the side of the positioning plate.

[0011] The above technical solution, through the design of the limiting ring, can limit the overall sliding position of the positioning disk.

[0012] As a preferred embodiment of the above technical solution, an L-shaped tube is fixedly connected to the bottom of the hollow block, a reinforcing block is fixedly installed on the outer wall of the L-shaped tube, and the reinforcing block is fixedly installed on the top of the positioning seat.

[0013] The above technical solution, through the design of the reinforcing block, can provide stable support for the L-shaped pipe.

[0014] As a preferred embodiment of the above technical solution, a protruding nozzle is fixedly connected to one end of the L-shaped tube away from the hollow block, and an air gun is movably inserted into the inner cavity of the protruding nozzle. A rubber ring is fixedly connected to the inner wall of the protruding nozzle, and the inner wall of the rubber ring is movably connected to the outer wall of the air gun.

[0015] The above technical solution, with its protruding nozzle and rubber ring design, facilitates easy connection with the air gun.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This utility model, through the design of a convenient replacement mechanism, allows the end of the air gun to be inserted into the protruding tube and inflated, causing the locating pin to be removed from the inner cavity of the second through hole. Subsequently, the drill bit body can be pulled out from the top of the tool holder connecting seat for replacement. The air gun is then removed from the end of the protruding tube, and the initial elastic force of the elastic element causes the locating pin to be inserted back into the replaced second through hole, thus completing the replacement of the drill bit body. The process does not require disassembling or reassembling the bolts, significantly improving the speed of drill bit body replacement, reducing the labor intensity of workers, and ensuring the overall efficiency of drilling. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is an exploded view of the convenient replacement mechanism of this utility model;

[0020] Figure 3 This is a schematic diagram of the positioning seat of this utility model;

[0021] Figure 4 This is a cross-sectional structural diagram of the branch tube of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the L-shaped tube of this utility model.

[0023] In the diagram: 1. Drill bit body; 2. Convenient replacement mechanism; 21. Tool holder connecting seat; 211. Tool groove; 212. Tool holder; 213. No. 1 through hole; 214. No. 2 through hole; 22. Positioning seat; 23. Support block; 24. Hollow block; 25. Branch tube; 251. Through groove plate; 252. Sliding inner cylinder; 253. Rubber ring; 254. Elastic element; 255. Limiting ring; 26. Connecting arm; 27. Positioning plate; 28. Positioning pin; 29. ​​L-shaped tube; 291. Reinforcing block; 292. Protruding tube opening; 293. Rubber ring; 294. Air gun. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] like Figures 1-5 As shown, this utility model provides a technical solution: a drill bit assembly for CNC machine tools, including a drill bit body 1. A convenient replacement mechanism 2 is provided at the bottom of the drill bit body 1. The convenient replacement mechanism 2 includes a tool holder connecting seat 21. A tool groove 211 is formed at the top of the tool holder connecting seat 21. A tool holder 212 is movably inserted into the inner cavity of the tool groove 211. The tool holder 212 is fixedly connected to the bottom of the drill bit body 1. A second through hole 214 is formed on both the front and back of the tool holder 212. A first through hole 213 is formed on both the front and back of the tool holder connecting seat 21. The first through hole 213 and the second through hole 214... A positioning pin 28 is movably inserted into the inner cavity of the drill bit body 1. A positioning seat 22 is fixedly installed at the bottom of the tool holder connecting seat 21. The positioning pin 28 is controlled to be withdrawn from the inner cavity of the second through hole 214. Then the tool holder 212 can be pulled out from the inner cavity of the tool groove 211 to complete the disassembly of the drill bit body 1. The replacement tool holder 212 is inserted into the tool groove 211. Then the positioning pin 28 is controlled to be inserted back into the replacement second through hole 214 to complete the replacement of the drill bit body 1. This is convenient for users. The machine tool has a threaded hole corresponding to the hole of the positioning seat 22. The positioning seat 22 can be installed on the machine tool with the help of bolts.

[0026] As one implementation method in this embodiment, such as Figures 1-4As shown, a support block 23 is fixedly installed on the top of the positioning seat 22. A hollow block 24 is fixedly installed on the outer wall of the support block 23. Branch cylinders 25 are fixedly connected to both the front and back of the hollow block 24. A through-slot plate 251 is fixedly installed on the inner wall of the branch cylinder 25. An elastic element 254 is fixedly connected to the center of the side of the through-slot plate 251. A sliding inner cylinder 252 is fixedly connected to the end of the elastic element 254 away from the through-slot plate 251. A rubber ring 253 is fixedly connected to the outer wall of the sliding inner cylinder 252. The outer wall of the rubber ring 253 is slidably connected to the inner wall of the branch cylinder 25. A connecting arm 26 is fixedly installed at the center of the side of the sliding inner cylinder 252. A limit ring 255 is fixedly installed on the inner wall of the branch cylinder 25. A positioning plate 27 is fixedly connected to the end of the connecting arm 26 away from the sliding inner cylinder 252. The positioning pin 28 is fixedly connected to the side of the positioning plate 27. The branch cylinder 25 is connected to the inner cavity of the hollow block 24. After the air gun 294 delivers gas into the hollow block 24, the gas enters the branch cylinder 25 and pushes the sliding inner cylinder 252 to slide on the inner wall of the branch cylinder 25 through the through slot plate 251. Through the transmission of the connecting arm 26 and the positioning plate 27, the positioning pin 28 can be withdrawn from the inner cavity of the second through hole 214. At the same time, the elastic element 254 will be stretched. After the air gun 294 is withdrawn, the air in the inner cavity of the branch cylinder 25 can be discharged through the original path by the reset elastic force of the elastic element 254. At the same time, the sliding inner cylinder 252, the connecting arm 26 and the positioning plate 27 are reset, causing the positioning pin 28 to be inserted back into the second through hole 214, thus completing the replacement of the drill bit body 1.

[0027] As one implementation method in this embodiment, such as Figure 5 As shown, an L-shaped tube 29 is fixedly connected to the bottom of the hollow block 24. A reinforcing block 291 is fixedly installed on the outer wall of the L-shaped tube 29. The reinforcing block 291 is fixedly installed on the top of the positioning seat 22. A protruding tube opening 292 is fixedly connected to the end of the L-shaped tube 29 away from the hollow block 24. An air gun 294 is movably inserted into the inner cavity of the protruding tube opening 292. A rubber ring 293 is fixedly connected to the inner wall of the protruding tube opening 292. The inner wall of the rubber ring 293 is movable against the outer wall of the air gun 294. The air gun 294 is an existing structure. Air guns 294 are installed in CNC workshops for tasks such as chip removal. The air gun 294 is connected to the air source. After the air gun 294 is inserted into the end of the protruding tube 292, the connection between the protruding tube 292 and the air gun 294 can be sealed by the rubber ring 293. Then, the air gun 294 is controlled to output gas. The hollow block 24 is connected to the inner cavity of the L-shaped tube 29, so air can be filled into the inner cavity of the hollow block 24.

[0028] Working principle: This structure is installed on the machine tool from the positioning seat 22. The drill body 1 can then be controlled by the machine tool to perform drilling. If the drill body 1 needs to be replaced, the air gun 294 is inserted into the end of the protruding tube 292. The air gun 294 is then controlled to output gas. The gas passes through the hollow block 24 and enters the branch cylinder 25. It passes through the through slot plate 251 and pushes the sliding inner cylinder 252 to slide on the inner wall of the branch cylinder 25. Through the transmission of the connecting arm 26 and the positioning plate 27, the positioning pin 28 can be moved from the second through slot 25 to the second through slot 26. The drill bit body 1 is replaced by pulling the handle 212 out of the inner cavity of the hole 214 and stretching the elastic element 254. The user can then pull the handle 212 out of the inner cavity of the groove 211 and replace the drill bit body 1. Next, the air gun 294 is pulled out from the end of the protruding tube 292. Through the reset force of the elastic element 254, the air in the inner cavity of the branch tube 25 can be discharged through the original path. At the same time, the sliding inner tube 252, the connecting arm 26 and the positioning plate 27 are reset, causing the positioning pin 28 to be inserted back into the second through hole 214, thus completing the replacement of the drill bit body 1.

[0029] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A drill bit assembly for a CNC machine tool, comprising a drill bit body (1), characterized in that: The bottom of the drill bit body (1) is provided with a convenient replacement mechanism (2). The convenient replacement mechanism (2) includes a tool holder connecting seat (21). The top of the tool holder connecting seat (21) is provided with a tool groove (211). A tool holder (212) is movably inserted into the inner cavity of the tool groove (211). The tool holder (212) is fixedly connected to the bottom of the drill bit body (1). The front and back of the tool holder (212) are provided with a second through hole (214). The front and back of the tool holder connecting seat (21) are provided with a first through hole (213). A positioning pin (28) is movably inserted into the inner cavity of the first through hole (213) and the second through hole (214). A positioning seat (22) is fixedly installed at the bottom of the tool holder connecting seat (21).

2. A drill bit assembly for a CNC machine tool according to claim 1, characterized in that: A support block (23) is fixedly installed on the top of the positioning seat (22), and a hollow block (24) is fixedly installed on the outer wall of the support block (23). A branch tube (25) is fixedly connected to both the front and back of the hollow block (24).

3. A drill bit assembly for a CNC machine tool according to claim 2, characterized in that: A through-slot plate (251) is fixedly installed on the inner wall of the branch cylinder (25). An elastic element (254) is fixedly connected to the center of the side of the through-slot plate (251). A sliding inner cylinder (252) is fixedly connected to the end of the elastic element (254) away from the through-slot plate (251).

4. A drill bit assembly for a CNC machine tool according to claim 3, characterized in that: A rubber ring (253) is fixedly connected to the outer wall of the sliding inner cylinder (252). The outer wall of the rubber ring (253) is slidably connected to the inner wall of the branch cylinder (25). A connecting arm (26) is fixedly installed at the center of the side of the sliding inner cylinder (252).

5. A drill bit assembly for a CNC machine tool according to claim 4, characterized in that: A limit ring (255) is fixedly installed on the inner wall of the branch cylinder (25), and a positioning plate (27) is fixedly connected to the end of the connecting arm (26) away from the sliding inner cylinder (252), and the positioning pin (28) is fixedly connected to the side of the positioning plate (27).

6. A drill bit assembly for a CNC machine tool according to claim 2, characterized in that: The bottom of the hollow block (24) is fixedly connected to an L-shaped tube (29), and a reinforcing block (291) is fixedly installed on the outer wall of the L-shaped tube (29). The reinforcing block (291) is fixedly installed on the top of the positioning seat (22).

7. A drill bit assembly for a CNC machine tool according to claim 6, characterized in that: The L-shaped tube (29) is fixedly connected to a protruding port (292) at one end away from the hollow block (24). An air gun (294) is movably inserted into the inner cavity of the protruding port (292). A rubber ring (293) is fixedly connected to the inner wall of the protruding port (292). The inner wall of the rubber ring (293) is movably connected to the outer wall of the air gun (294).

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