PCB milling cutter with replaceable cutter head

Abstract

The utility model relates to the technical field of printed circuit board (PCB) milling cutters, and discloses a PCB milling cutter with a replaceable cutter head, which comprises a cutter head and a cutter handle, and an adjusting mechanism and a dismounting mechanism are arranged between the cutter handle and the cutter head. Through the arrangement of a clamping seat and a buckling seat, when the tool bit is disassembled, four wedge-shaped clamping blocks are pressed respectively, so that the four wedge-shaped clamping blocks are extruded and compressed into a telescopic groove, then the tool bit is pulled downwards, and the clamping seat and the buckling seat are disconnected, so that the tool bit can be quickly taken down for replacement, the whole milling cutter does not need to be replaced, the operation is convenient, and the practicability is high. The practicability of the PCB milling cutter is improved; the sealing cover on the tool bit is taken down in a rotating mode, cooling liquid is injected into the cooling pipe through the injection opening of the cooling pipe, and finally the sealing cover is covered and screwed tightly in a rotating mode, so that sealing performance is guaranteed, when the tool bit works, the cooling liquid in the cooling pipe can cool the high temperature generated when the tool bit works, and the situation that the service life of the tool bit is affected due to the too high temperature is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB milling cutters, in particular to a PCB milling cutter with replaceable cutter heads. Background Technique

[0002] The milling cutter used for PCB is also called a routing cutter, which is used in the post-process of PCB. The main purpose is to cut the fabricated circuit board into individual PCS or SPNL with this cutter and then ship them to customers, that is, the product size required by the customers ultimately. This cutter is mainly used for cutting, and the cutting edge and the force direction are in the horizontal direction, similar to a drill bit.

[0003] The Chinese patent provides a PCB milling cutter with the publication number of CN205650876U, which includes a tool shank and a cutter head arranged on the tool shank. A spiral chip removal groove is arranged on the cutter head, a chip removal channel is arranged on the axis of the cutter head, a plurality of chip removal ports are arranged on the spiral chip removal groove, and the chip removal ports are communicated with the chip removal channel. An air extraction mechanism is arranged in the tool shank, and a chip outlet is arranged on the side wall of the tool shank. One end of the air extraction mechanism is communicated with the chip removal channel, and the other end is connected with the chip outlet.

[0004] The structure of this PCB milling cutter is simple. By adding the design of the chip removal channel, the problem of poor chip removal ability of the existing PCB milling cutter is solved. However, when the PCB milling cutter is in use, since it is welded and installed on the tool shank, after long-term use, the cutter head of the milling cutter will be worn. At this time, the milling cutter needs to be replaced. However, since the cutter head is welded to the tool shank, they need to be replaced together, which will increase the cost and the practicability is poor. Therefore, a PCB milling cutter with replaceable cutter heads is needed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a PCB milling cutter with replaceable cutter heads to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A PCB milling cutter with replaceable cutter heads, including a cutter head and a tool shank, an adjusting mechanism is arranged between the tool shank and the cutter head; the adjusting mechanism includes a fixed sleeve, a telescopic column is arranged on the inner wall of the fixed sleeve, the surface of the telescopic column is slidably connected with the inner wall of the fixed sleeve, and a disassembly and assembly mechanism is arranged between the telescopic column and the cutter head; the disassembly and assembly mechanism includes a clamping seat and a buckling seat, a groove is opened on the top surface of the buckling seat, the surface of the clamping seat is inserted into the inner wall of the groove, a clamping groove is opened on the surface of the buckling seat, the clamping groove is communicated with the groove, a telescopic groove is opened on the surface of the clamping seat, a wedge-shaped clamping block is slidably connected to the inner wall of the telescopic groove, and the wedge-shaped clamping block is clamped with the clamping groove.

[0007] Preferably, the top surface of the fixed sleeve is fixedly connected to the bottom surface of the tool handle. Through holes are provided on the surface of the fixed sleeve, and fixing bolts are arranged in the through holes. A plurality of screw holes are provided on the surface of the telescopic column, and the fixing bolts pass through the through holes and are threadedly connected to the inner walls of the screw holes.

[0008] Preferably, the bottom surface of the telescopic column is fixedly connected to the top surface of the clamping seat. Sliding grooves are provided on the inner wall of the telescopic groove. Limiting sliders are fixedly arranged on both sides of the wedge-shaped clamping block, and the surfaces of the limiting sliders are slidably connected to the inner walls of the sliding grooves.

[0009] Preferably, one end of the wedge-shaped clamping block is provided with a spring. One end of the spring is fixedly connected to the inner wall of the telescopic groove, and the other end of the spring is fixedly connected to the wedge-shaped clamping block.

[0010] Preferably, an installation groove is provided on the top surface of the tool tip. The bottom surface of the fastening seat is fixedly connected to the inner wall of the installation groove. A cooling pipe is arranged inside the tool tip. The cooling pipe is arranged in a spiral shape. The top surface of the liquid injection port of the cooling pipe penetrates through the inner wall of the tool tip and extends to the upper end of the tool tip. A sealing cover is threadedly connected to the surface of the injection port of the cooling pipe.

[0011] Preferably, installation screw holes are provided on the tool handle, and installation bolts are arranged on the inner walls of the installation screw holes. The surface of the installation bolt is threadedly connected to the inner wall of the installation screw hole.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1) For the PCB milling cutter with replaceable tool tips, through the settings of the clamping seat and the fastening seat, when disassembling the tool tip, press the four wedge-shaped clamping blocks respectively, so that the four wedge-shaped clamping blocks are squeezed and slide and retract into the telescopic groove under the limiting and guiding of the limiting sliders. Then pull the tool tip downward, and the connection between the clamping seat and the fastening seat can be released, so that the tool tip can be quickly removed and replaced without replacing the whole milling cutter, and the operation is convenient, improving the practicability of the PCB milling cutter.

[0014] 2) For the PCB milling cutter with replaceable tool tips, by rotating and removing the sealing cover on the tool tip, injecting the coolant into the cooling pipe through the injection port of the cooling pipe, and finally covering and rotating the sealing cover to tighten it to ensure the sealing performance, so that when the tool tip is working, the coolant in the cooling pipe can cool down the high temperature generated during the working of the tool tip, avoiding the influence of too high temperature on the service life of the tool tip.

[0015] 3) For the PCB milling cutter with replaceable tool tips, by removing the fixing bolts and then extending the telescopic column, the length of the milling cutter can be adjusted, thereby improving the applicable range of the PCB milling cutter. After adjustment, pass the fixing bolts through the through holes on the fixed sleeve and perform bolt connection with the screw holes on the telescopic column to fix it, so that the length of the PCB milling cutter can be adjusted according to the usage requirements. Brief Description of the Drawings

[0016] Figure 1 This is a three-dimensional structure schematic diagram of the whole of the present utility model;

[0017] Figure 2 This is an exploded three-dimensional structure diagram of the adjustment mechanism of the present utility model;

[0018] Figure 3 This is a sectional view of the exploded structure of the disassembly and assembly mechanism of the present utility model;

[0019] Figure 4 This is a sectional view of the three-dimensional structure of the tool bit of the present utility model.

[0020] In the figures: 1, tool bit; 2, tool handle; 3, mounting bolt; 4, adjustment mechanism; 401, fixed sleeve; 402, telescopic column; 403, screw hole; 404, fixing bolt; 5, disassembly and assembly mechanism; 501, clamping seat; 502, buckling seat; 503, clamping groove; 504, wedge-shaped clamping block; 505, limiting slider; 506, spring; 6, cooling pipe; 7, sealing cover. Detailed Description of the Preferred Embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment 1

[0023] Combined with Figures 1-4 , a PCB milling cutter with a replaceable tool bit includes a tool bit 1 and a tool handle 2. A cooling pipe 6 is arranged inside the tool bit 1. The cooling pipe 6 is arranged in a spiral shape. The top surface of the liquid injection port of the cooling pipe 6 penetrates the inner wall of the tool bit 1 and extends to the upper end of the tool bit 1. A sealing cover 7 is threadedly connected to the surface of the injection port of the cooling pipe 6. A mounting screw hole is provided on the tool handle 2. An installation bolt 3 is arranged on the inner wall of the mounting screw hole. The surface of the installation bolt 3 is threadedly connected to the inner wall of the mounting screw hole. An adjustment mechanism 4 is arranged between the tool handle 2 and the tool bit 1.

[0024] Specifically, by rotating and removing the sealing cover 7 on the tool bit 1, injecting the coolant into the cooling pipe 6 through the injection port of the cooling pipe 6, and finally covering and rotating the sealing cover 7 to tighten it to ensure the sealing performance, so that when the tool bit 1 is working, the coolant in the cooling pipe 6 can cool down the high temperature generated during the work of the tool bit 1, avoiding the influence of excessive temperature on the service life of the tool bit 1.

[0025] Further, the adjusting mechanism 4 includes a fixed sleeve 401. A telescopic column 402 is arranged on the inner wall of the fixed sleeve 401. The surface of the telescopic column 402 is slidably connected to the inner wall of the fixed sleeve 401. The top surface of the fixed sleeve 401 is fixedly connected to the bottom surface of the tool handle 2. Through holes are formed on the surface of the fixed sleeve 401. A fixing bolt 404 is arranged in the through holes. A number of threaded holes 403 are formed on the surface of the telescopic column 402. The fixing bolt 404 passes through the through hole and is threadedly connected to the inner wall of the threaded hole 403. A disassembly and assembly mechanism 5 is arranged between the telescopic column 402 and the tool bit 1.

[0026] Specifically, by removing the fixing bolt 404 and then extending the telescopic column 402, the length of the milling cutter can be adjusted, thereby improving the applicable range of this PCB milling cutter. After adjustment, the fixing bolt 404 is passed through the through hole on the fixed sleeve 401 and bolted to the threaded hole 403 on the telescopic column 402 to be fixed, so that this PCB milling cutter can adjust the length of the milling cutter according to the usage requirements.

[0027] Further, the disassembly and assembly mechanism 5 includes a clamping seat 501 and a buckling seat 502. A groove is formed on the top surface of the buckling seat 502. The surface of the clamping seat 501 is inserted into the inner wall of the groove. A clamping groove 503 is formed on the surface of the buckling seat 502. The clamping groove 503 communicates with the groove. A telescopic groove is formed on the surface of the clamping seat 501. A wedge-shaped clamping block 504 is slidably connected to the inner wall of the telescopic groove. The wedge-shaped clamping block 504 is clamped with the clamping groove 503. The bottom surface of the telescopic column 402 is fixedly connected to the top surface of the clamping seat 501. A sliding groove is formed on the inner wall of the telescopic groove. Limiting sliding blocks 505 are fixedly arranged on both sides of the wedge-shaped clamping block 504. The surface of the limiting sliding block 505 is slidably connected to the inner wall of the sliding groove. One end of the wedge-shaped clamping block 504 is provided with a spring 506. One end of the spring 506 is fixedly connected to the inner wall of the telescopic groove. The other end of the spring 506 is fixedly connected to the wedge-shaped clamping block 504. An installation groove is formed on the top surface of the tool bit 1. The bottom surface of the buckling seat 502 is fixedly connected to the inner wall of the installation groove.

[0028] Specifically, through the arrangement of the clamping seat 501 and the buckling seat 502, when the tool bit 1 is disassembled, the four wedge-shaped clamping blocks 504 are respectively pressed, so that the four wedge-shaped clamping blocks 504 are squeezed and slide into the telescopic groove under the limiting and guiding of the limiting sliding blocks 505. Then, the tool bit 1 is pulled downward, so that the connection between the clamping seat 501 and the buckling seat 502 can be released, and thus the tool bit 1 can be quickly removed and replaced. It is not necessary to replace the whole milling cutter, and the operation is convenient, improving the practicability of the PCB milling cutter.

[0029] During the actual operation process, the tool holder 2 is connected to the processing equipment using the mounting bolt 3. The length of the milling cutter can be adjusted according to the usage requirements. When adjusting, only need to remove the fixing bolt 404, and then extend the telescopic column 402 to adjust the length of the milling cutter, thereby improving the applicable range of this PCB milling cutter. After adjustment, pass the fixing bolt 404 through the through hole on the fixing sleeve 401 and connect it with the screw hole 403 on the telescopic column 402 with a bolt to fix it;

[0030] Before using this PCB milling cutter, the sealing cover 7 on the cutter head 1 can be rotated and removed. Inject the coolant into the cooling pipe 6 through the injection port of the cooling pipe 6, and finally cover and rotate the sealing cover 7 tightly to ensure the sealing performance. When the cutter head 1 is working, the coolant in the cooling pipe 6 can cool down the high temperature generated during the work of the cutter head 1 to avoid affecting the service life of the cutter head 1 due to excessive temperature;

[0031] When it is necessary to replace the cutter head of this PCB milling cutter, press the four wedge-shaped blocks 504 respectively, so that the four wedge-shaped blocks 504 are squeezed and slide and retract into the telescopic groove under the limit guidance of the limit slider 505. Then pull the cutter head 1 downward to disconnect the card seat 501 from the buckle seat 502, and the cutter head 1 can be removed for replacement. When installing, press the four wedge-shaped blocks 504 again to make the four wedge-shaped blocks 504 slide and retract into the telescopic groove. Then insert the buckle seat 502 on the cutter head 1 into the card seat 501, and release the four wedge-shaped blocks 504. Under the resilience of the spring 506, the four wedge-shaped blocks 504 can be reset, so that they can extend out of the telescopic groove and be clamped with the card slots 503 on the buckle seat 502 to complete the replacement and installation of the cutter head 1.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PCB milling cutter with a replaceable cutter head, comprising a cutter head (1) and a cutter handle (2), characterized in that: An adjustment mechanism (4) is provided between the knife handle (2) and the knife head (1); The adjustment mechanism (4) comprises a fixed sleeve (401), the inner wall of the fixed sleeve (401) is provided with a telescopic column (402), the surface of the telescopic column (402) is slidably connected to the inner wall of the fixed sleeve (401), and a disassembly mechanism (5) is provided between the telescopic column (402) and the cutter head (1); The disassembly and assembly mechanism (5) comprises a card seat (501) and a buckle seat (502); a groove is provided on the top surface of the buckle seat (502); the surface of the card seat (501) is plugged into the inner wall of the groove; a card slot (503) is provided on the surface of the buckle seat (502); the card slot (503) is communicated with the groove; a telescopic groove is provided on the surface of the card seat (501); a wedge-shaped card block (504) is slidably connected to the inner wall of the telescopic groove; the wedge-shaped card block (504) is engaged with the card slot (503).

2. A PCB milling cutter with a replaceable cutter head according to claim 1, characterized in that: The top surface of the fixed sleeve (401) is fixedly connected to the bottom surface of the knife handle (2); a through hole is provided on the surface of the fixed sleeve (401), a fixing bolt (404) is arranged in the through hole, a plurality of screw holes (403) are provided on the surface of the telescopic column (402), and the fixing bolt (404) passes through the through hole and is threadedly connected to the inner wall of the screw hole (403).

3. The PCB milling cutter with replaceable cutter head according to claim 1, characterized in that: The bottom surface of the telescopic column (402) is fixedly connected to the top surface of the clamping seat (501), a sliding groove is provided on the inner wall of the telescopic groove, and limiting sliders (505) are fixedly provided on both sides of the wedge-shaped clamping block (504), and the surface of the limiting slider (505) is slidably connected to the inner wall of the sliding groove.

4. The PCB milling cutter with replaceable cutter head according to claim 3, characterized in that: A spring (506) is provided at one end of the wedge-shaped clamping block (504), one end of the spring (506) is fixedly connected to the inner wall of the telescopic slot, and the other end of the spring (506) is fixedly connected to the wedge-shaped clamping block (504).

5. The PCB milling cutter with replaceable cutter head according to claim 1, characterized in that: The top surface of the cutter head (1) is provided with a mounting groove, the bottom surface of the buckle seat (502) is fixedly connected to the inner wall of the mounting groove, a cooling pipe (6) is arranged inside the cutter head (1), the cooling pipe (6) is arranged in a spiral shape, the top surface of the injection port of the cooling pipe (6) penetrates the inner wall of the cutter head (1) and extends to the upper end of the cutter head (1), and a sealing cover (7) is threadedly connected to the surface of the injection port of the cooling pipe (6).

6. The PCB milling cutter with replaceable cutter head according to claim 1, characterized in that: The knife handle (2) is provided with a mounting screw hole, the inner wall of the mounting screw hole is provided with a mounting bolt (3), and the surface of the mounting bolt (3) is threadedly connected to the inner wall of the mounting screw hole.

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