Hard alloy circular blade polishing device

Abstract

The invention relates to a hard alloy circular blade polishing device, which belongs to the technical field of alloy blade production, comprises a rack, a mounting seat and a blade fixing assembly, and is characterized in that the mounting seat comprises a seat body and a mounting pipe, the seat body is arranged on the rack, and the mounting pipe is arranged on the seat body in a penetrating manner and can rotate around the axis of the mounting pipe on the seat body; the blade fixing assembly comprises a fixing rod and a plurality of fixing pieces, the fixing pieces are all arranged at one end of the mounting pipe, the fixing pieces are circumferentially distributed on the mounting pipe, the end, provided with the fixing pieces, of the mounting pipe can be sleeved with the hard alloy circular blades, and the fixing rod can be matched with the end, provided with the fixing pieces, of the mounting pipe in an inserted mode; when the fixing rod is matched with the mounting pipe in an inserted mode, the fixing piece extends out of the mounting pipe and fixes the hard alloy circular blade arranged on the mounting pipe in a sleeving mode. The polishing device has the effect of improving the polishing efficiency.

Description

Technical Field

[0001] The present application relates to the field of alloy blade production, and in particular to a hard alloy circular blade polishing device. Background Art

[0002] A cemented carbide circular blade is a circular slitting blade made of cemented carbide. A circular mounting hole is often provided in the middle of the cemented carbide circular blade to facilitate its own fixation. It has the advantages of high hardness, high strength, corrosion resistance and high temperature resistance. It is usually used for cutting and trimming of metal materials.

[0003] The production process of cemented carbide circular blades often involves a polishing process for the cutting edge of the cemented carbide circular blades. The polishing equipment in the prior art often mounts the cemented carbide circular blade on a lathe through the mounting hole on the cemented carbide circular blade on a mounting shaft for driving the cemented carbide circular blade to rotate, and then presses the cemented carbide circular blade by installing a pressure plate that matches the thread of the mounting shaft on the mounting shaft, thereby fixing the cemented carbide circular blade. Subsequently, the cutting edge of the cemented carbide circular blade is polished by related equipment.

[0004] However, when fixing the carbide circular blade in this way, it is often necessary to twist the pressure plate used to press the carbide circular blade. During the twisting process, in order to prevent the installation shaft from rotating with the pressure plate, the installation shaft needs to be fixed. The entire fixing process is inefficient, resulting in low polishing efficiency. Summary of the invention

[0005] In order to improve the polishing efficiency of cemented carbide circular blades, the present application provides a cemented carbide circular blade polishing device, which adopts the following technical solution:

[0006] It includes a frame, a mounting seat and a blade fixing assembly, and is characterized in that: the mounting seat includes a seat body and a mounting tube, the seat body is arranged on the frame, the mounting tube is passed through the seat body and can rotate around its own axis on the seat body, the blade fixing assembly includes a fixing rod and a fixing piece, a plurality of fixing pieces are provided and are all arranged at one end of the mounting tube, a plurality of fixing pieces are distributed circumferentially on the mounting tube, a carbide circular blade can be sleeved on one end of the mounting tube provided with the fixing piece, the fixing rod can be plugged and matched with one end of the mounting tube provided with the fixing piece, and when the fixing rod is plugged and matched with the mounting tube, the fixing piece extends from the mounting tube to fix the carbide circular blade sleeved on the mounting tube.

[0007] Preferably, the fixing member includes a connecting rod, a first abutment block, a second abutment block and a first spring, the connecting rod passes through the side wall of the mounting tube, the axis of the connecting rod is perpendicular to the axis of the mounting tube, the first abutment block is located inside the mounting tube and connected to the connecting rod, the second abutment block is located outside the mounting tube and connected to the other end of the connecting rod, the first spring is sleeved on the connecting rod, one end of the first spring is connected to the inner wall of the mounting tube, and the other end of the first spring is connected to the first abutment block.

[0008] Preferably, a limiting plate is provided on the mounting tube, the limiting plate is located between the second abutment block and the seat body, the second abutment block comprises a first mounting block, a fixed block, a wedge block and a second spring, the first mounting block is connected to the connecting rod, a first slide groove and a second slide groove parallel to each other are provided on the first mounting block, a connecting channel is provided between the first slide groove and the second slide groove, the fixed block is slidably arranged in the first slide groove, one end of the second spring is fixedly arranged in the first slide groove, and the other end of the second spring is connected to the fixed block, the fixed block is used to abut against the side wall of the mounting hole on the carbide circular blade; the wedge block is slidably arranged in the second slide groove, and a clamping space for clamping the carbide circular blade is formed between the wedge surface on the wedge block and the limiting plate, and the sliding direction of the wedge block in the second slide groove is opposite to the sliding direction of the fixed block in the first slide groove.

[0009] Preferably, a driving member for driving the mounting tube to rotate around its own axis on the seat body is provided on the seat body, and a plurality of balls are provided on a side of the limit plate close to the seat body by means of a ball hinge, and each ball abuts against the seat body.

[0010] Preferably, the fixing rod comprises a driving portion and an inserting portion, wherein the driving portion is used to abut against a first abutting block located in the mounting tube, and the inserting portion can be inserted and matched with the mounting tube.

[0011] Preferably, a retaining frame is provided on the seat body, a fixing ring for the fixing rod to pass through is provided on the retaining frame, and a proximity sensor capable of sensing the plug-in portion on the fixing rod is provided on the fixing ring.

[0012] Preferably, a polishing assembly is provided on the seat body, and the polishing assembly includes a first pusher, a polishing seat and a polishing plate. The first pusher is provided on the seat body for pushing the polishing seat to move toward the mounting tube, and the polishing plate is provided on the polishing seat for polishing the cutting edge of the carbide circular blade.

[0013] Preferably, the polishing seat includes a connecting block, a second mounting block and a supporting block, the connecting block is connected to the first pushing member, the supporting block is vertically connected to one end of the supporting block and slidably cooperates with the seat body, the second mounting block is arranged at the other end of the connecting block, the polishing plate is hinged on the second mounting block, and the second mounting block is provided with a second pushing member for driving the polishing plate to rotate around the axis of the hinge shaft with the second mounting block, and the distance between the polishing plate and the supporting block gradually increases from close to the first pushing member to away from the first pushing member.

[0014] Preferably, a cooling pipe is provided on the seat body, and a nozzle is provided on the cooling pipe, and the nozzle is used to spray cooling liquid toward the abutment between the polishing plate and the cemented carbide circular blade.

[0015] In summary, compared with the prior art, the advantages of the present application are:

[0016] 1. After the carbide circular blade is sleeved on the mounting tube, the fixing rod is inserted into the mounting tube, so that the fixing piece can extend from the mounting tube, which enables the second abutment block on the fixing piece to abut against the inner wall of the mounting hole on the carbide circular blade to fix the carbide circular blade on the mounting tube. Subsequently, the carbide circular blade can be driven by driving the mounting tube to rotate around itself on the seat body. During the whole process, it is only necessary to insert the fixing rod into the mounting tube, and there is no need to fix the carbide circular blade by twisting the pressure plate, which improves the efficiency of fixing the carbide circular blade, thereby achieving the effect of improving the efficiency of the carbide circular blade.

[0017] 2. After the second abutment block is pushed out by the fixing rod, the fixing block on the second abutment block abuts against the inner wall of the mounting hole on the carbide circular blade, thereby fixing the carbide circular blade sleeved on the mounting tube and placed on the limit plate. At the same time, since the second spring is in a compressed state after the fixing block abuts against the inner wall of the mounting hole on the carbide tool, the gas in the first slide groove enters the second slide groove through the connecting channel, thereby pushing the wedge block out. At this time, the wedge surface on the wedge block abuts against the edge of the mounting hole, thereby pressing the carbide circular blade against the limit plate, further increasing the reliability of the carbide circular blade after being fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional schematic diagram of a cemented carbide circular blade in an embodiment of the present application;

[0019] Figure 2 yes Figure 1 A three-dimensional schematic diagram from another perspective (the carbide circular blade is hidden in the figure);

[0020] Figure 3 yes Figure 1 The main view of

[0021] Figure 4 yes Figure 3 A full cross-sectional view of

[0022] Figure 5 yes Figure 4 A magnified schematic diagram of center A.

[0023] Figure 6 yes Figure 4 A magnified schematic diagram of point B in the middle.

[0024] Description of reference numerals: 1, frame; 2, mounting seat; 201, seat body; 202, mounting tube; 2021, limit plate; 2022, ball bearing; 3, blade fixing assembly; 301, fixing rod; 3011, driving part; 3012, plug-in part; 302, fixing piece; 3021, connecting rod; 3022, first abutting block; 3023, second abutting block; 30231, first mounting block; 30232, fixing block; 30233, wedge block; 30234, second spring; 30235, first slide groove; 30236, second slide groove; 30237, connecting channel; 3024, first spring; 4, driving member; 5, retaining frame; 501, fixing ring; 6, proximity sensor; 7, polishing assembly; 701, first push member; 702, polishing seat; 7021, connecting block; 7022, second mounting block; 7023, supporting block; 7024, second push member; 703, polishing plate; 8, cooling pipe; 801, nozzle. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-6 This application is described in further detail.

[0026] Example

[0027] Reference Figure 1 , Figure 2 , Figure 3 as well as Figure 4 It can be seen that the embodiment of the present application discloses a carbide circular blade polishing device, including a frame 1, a mounting seat 2 and a blade fixing assembly 3, wherein the mounting seat 2 includes a seat body 201 and a mounting tube 202, the seat body 201 is fixedly arranged on the frame 1, and the upper surface of the seat body 201 is parallel to the horizontal line, the mounting tube 202 is vertically penetrated by the seat body 201, and can rotate around its own axis on the seat body 201, and a driving member 4 for driving the mounting tube 202 to rotate is arranged below the frame 1, and a plurality of transmission teeth are circumferentially arranged on the outer wall of the lower end of the mounting tube 202, and the driving member 4 is a driving motor, and an active gear meshing with a plurality of transmission teeth on the mounting tube 202 is installed on the output shaft of the driving member 4, and when the driving member 4 is started, the mounting tube 202 also rotates around its own axis on the seat body 201.

[0028] A limit plate 2021 for supporting a carbide blade is provided on the mounting tube 202. At the same time, the limit plate 2021 also prevents the mounting tube 202 from falling off the seat body 201 due to its own gravity. Furthermore, a ball 2022 is provided on the side of the limit plate 2021 close to the upper surface of the seat body 201 through a ball hinge. The ball 2022 is used to abut against the upper surface of the seat body 201. This ensures that when the mounting tube 202 rotates around its own axis under the drive of the driving member 4, the friction between the limit plate 2021 and the upper surface of the seat body 201 will not easily hinder the rotation of the limit plate 2021.

[0029] Reference Figure 4 and Figure 5 The blade fixing assembly 3 includes a fixing rod 301 and a fixing member 302 arranged on the mounting tube 202. The fixing rod 301 can be inserted into the upper end of the mounting tube 202. The fixing member 302 is arranged on the upper end of the mounting tube 202 and is provided with a plurality of fixing members 302. The plurality of fixing members 302 are distributed circumferentially on the mounting tube 202 along the axis of the mounting tube 202. The fixing member 302 includes a connecting rod 3021, a first abutting block 3022, a second abutting block 3023 and a first spring 3024. In the embodiment, the connecting rod 3021 is passed through the mounting tube 202, and the axis of the connecting rod 3021 is perpendicular to the axis of the mounting tube 202. One end of the connecting rod 3021 is located in the mounting tube 202 and connected to the first abutment block 3022. The first abutment block 3022 is a metal block, and the end away from the connecting rod 3021 is a round head. The other end of the connecting rod 3021 is located outside the mounting tube 202 and connected to the second abutment block 3023. The first spring 3024 is sleeved on the connecting rod 3021. The first spring 3024 is in contact with the inner wall of the mounting tube 202, and the other end of the first spring 3024 is connected to the first abutment block 3022. The fixing rod 301 includes a coaxially arranged driving portion 3011 and a plug-in portion 3012. When the driving portion 3011 is inserted into the mounting tube 202, the driving portion 3011 abuts against the first abutment block 3022 located in the mounting tube 202, thereby pushing the connecting rod 3021 out of the mounting tube 202, so that the second abutment block 30 23 can abut against the inner wall of the mounting hole on the carbide circular blade on the limiting plate 2021, thereby fixing the carbide circular blade on the mounting tube 202; and when the driving part 3011 on the fixing rod 301 is pulled out from the mounting tube 202 and no longer abuts against the first abutting block 3022, the first spring 3024 drives the connecting rod 3021 to return to its original position under its own elastic force, thereby enabling the carbide circular blade on the limiting plate 2021 to be removed.

[0030] Furthermore, the second abutment block 3023 includes a first mounting block 30231, a fixed block 30232, a wedge block 30233 and a second spring 30234, wherein the first mounting block 30231 is connected to the connecting rod 3021, and a first sliding groove 30235 and a second sliding groove 30236 parallel to each other are respectively arranged on the side of the first mounting block 30231 away from the connecting rod 3021, and the fixed block 30232 is slidably arranged in the first sliding groove 30235, and the second spring 30234 is fixedly arranged in the first sliding groove 302 35 and connected to one end of the fixed block 30232 located in the first slide groove 30235, the wedge block 30233 is slidably arranged in the second slide groove 30236, and a connecting channel 30237 is also arranged between the first slide groove 30235 and the second slide groove 30236, and the connecting channel 30237 makes the first slide groove 30235 and the second slide groove 30236 interconnected, so that when the driving part 3011 on the fixed rod 301 pushes the connecting rod 3021 out of the mounting tube 202, the fixed rod 30235 located in the first slide groove 30235 The block 30232 will abut against the inner wall of the mounting hole of the carbide circular blade on the limiting plate 2021. At this time, the second spring 30234 is in a compressed state, the space in the first slide groove 30235 is compressed, and the gas therein enters the second slide groove 30236 through the connecting pipe, thereby pushing out the wedge block 30233 in the second slide groove 30236, so that the wedge surface on the wedge block 30233 can abut against the edge of the mounting hole on the carbide circular blade on the limiting plate 2021, and then the limiting plate 2021 A clamping space for clamping a carbide circular blade is formed therebetween to improve the stability of the carbide circular blade on the limit plate 2021 and reduce the probability of the carbide circular blade being difficult to rotate when the mounting tube 202 rotates; at the same time, when the fixing block 30232 no longer abuts against the side wall of the mounting hole on the carbide circular blade, the fixing block 30232 will be pushed out under the action of the second spring force, thereby retracting the wedge block 302333, thereby facilitating the carbide circular blade to be put on the mounting tube 202.

[0031] In addition, it is worth mentioning that since the wedge surface on the wedge block 30233 is used to press the carbide circular blade against the limit plate 2021, carbide circular blades of different thicknesses can be used within the range that the wedge surface can abut.

[0032] It should be noted that sealing rings are provided on both the fixed block 30232 and the wedge block 30233, so that the gas in the first slide groove 30235 and the second slide groove 30236 will not leak easily, and on the wedge surface of the wedge block 30233, an anti-slip pad can be provided to prevent the wedge block 30233 from being damaged when it abuts against the edge of the mounting hole on the carbide circular blade.

[0033] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A retaining frame 5 and a polishing component 7 for polishing the cutting edge of a cemented carbide circular blade are also provided on the seat body 201, wherein the retaining frame 5 is provided on the seat body 201, and a fixing ring 501 is provided on the retaining frame 5, the fixing ring 501 is located above the mounting tube 202 and is coaxial with the mounting tube 202, the fixing ring 501 is used for the fixing rod 301 to pass through, and the inner diameter of the fixing ring 501 is the same as the inner diameter of the mounting tube 202, so that when the fixing rod 301 passes through the fixing ring 501 and then is inserted into the mounting tube 202, its plug-in portion 3012 can be plugged into not only the mounting tube 202 but also the fixing ring 501, so that when the mounting tube 202 is rotating, the fixing rod 301 will not easily shake, thereby reducing the fixing effect of the cemented carbide circular blade on the limiting plate 2021.

[0034] Furthermore, a proximity sensor 6 is provided on the retaining frame 5, and the proximity sensor 6 is electrically connected to the driving member 4 for driving the mounting tube 202. When the fixing rod 301 is inserted into the fixing ring 501, the proximity sensor 6 can sense the fixing rod 301 located in the fixing ring 501, and send the corresponding sensing signal to the driving member 4, so that the driving member 4 can be started. This makes it impossible for the staff to start the driving member 4 for driving the mounting tube 202 when the fixing rod 301 is not placed into the mounting tube 202 through the fixing ring 501, thereby reducing the probability of the carbide circular blade starting to rotate without being fixed to the mounting tube 202 due to the staff's misoperation.

[0035] Reference Figure 2 , Figure 3 , Figure 4 and Figure 6The polishing assembly 7 includes a first pusher 701, a polishing seat 702 and a polishing plate 703. The first pusher 701 is arranged on the seat body 201. The first pusher 701 is a cylinder. The movable end of the first pusher 701 is connected to the polishing seat 702. The polishing seat 702 includes a connecting block 7021, a second mounting block 7022 and a supporting block 7023. The connecting block 7021 is connected to the movable end of the first pusher 701, and the supporting block 7023 is mounted on the connecting block. The lower end of the first pusher 701 is pushed out, and the supporting block 7023 can slide on the upper surface of the seat body 201. The second mounting block 7022 is mounted on the upper end of the connecting block 7021. A polishing space for the cutting edge of the carbide circular blade to enter is formed between the second mounting block 7022 and the supporting block 7023, and the polishing plate 703 is arranged in the polishing space. The polishing plate 703 is hinged to the end of the second mounting block 7022 away from the connecting block 7021. The second pusher 7024 is also provided on the second mounting block 7022 outside the polishing space at the position where the polishing plate 703 is located. The second pusher 7024 is a cylinder. The second pusher 7024 is hinged on the second mounting block 7022. The movable end of the second pusher 7024 is in the polishing space and is hinged to the polishing plate 703 away from the hinge on the second mounting block 7022. This enables the second pusher 7024 to drive the polishing plate 703 to rotate relative to the second mounting block 7022 around the axis of the hinge shaft. This enables the polishing plate 703 to rotate around the axis of the hinge shaft on the second mounting block 7022 when the cutting edge of the carbide circular blade enters the position between the second mounting block 7022 and the supporting block 7023. The second pusher 7024 can push the polishing plate 703 to rotate around the axis of the hinge shaft on the second mounting block 7022 so that the polishing plate 703 is pressed against the side of the cutting edge that needs to be polished, thereby performing polishing. At the same time, this also enables the polishing plate 703 to be suitable for carbide circular blades of different specifications with the same thickness but different cutting edge inclinations.

[0036] It is worth mentioning that before the driving member 4 is started, the second pushing member 7024 is always in a cut-off state, that is, the movable end of the second pushing member 7024 can be freely extended and retracted.

[0037] Furthermore, a cooling tube 8 is provided on the seat body 201. The cooling tube 8 can be bent, and a nozzle 801 is provided at the end of the cooling tube 8. When the polishing plate 703 is polishing the cutting edge on the carbide tool, the nozzle 801 sprays coolant on the contact between the cutting edge and the polishing plate 703. It should be noted that the liquid outlet direction of the nozzle 801 on the cooling tube 8 is consistent with the rotation direction of the carbide circular blade, so that the coolant can cool the polishing plate 703 and the cutting edge while also flushing the burrs during polishing.

[0038] In addition, it is worth mentioning that the upper surface of the support block 7023 and the upper surface of the limit plate 2021 are on the same horizontal line, which enables the support block 7023 to support the position being polished, thereby reducing the probability that the cutting edge is suspended in the air and pressed against by the polishing plate 703, thereby causing deformation; at the same time, this also allows the burrs on the cutting edge facing the upper surface of the seat body 201 to be scraped off by the support block 7023.

[0039] The implementation principle of the embodiment of the present application is as follows: first, the carbide circular blade to be polished at the cutting edge is placed from the space between the fixing ring 501 on the retaining frame 5 and the upper end of the mounting tube 202, the carbide circular blade is sleeved on the mounting tube 202 and is located on the limit plate 2021, and then the fixing rod 301 is placed from above the fixing ring 501, so that the driving part 3011 on the fixing rod 301 abuts against the first abutting block 3022 located in the fixing ring 501, thereby pushing out the connecting rod 3021, at this time, the fixing block 30232 abuts against the side wall of the mounting hole on the carbide circular blade, at this time, the second spring 30234 is compressed, and the gas in the first slide groove 30235 is transported to the second slide groove 30236 through the connecting passage, thereby pushing out the wedge block 30233, so that the wedge The wedge-shaped surface on the block 30233 can abut against the edge of the mounting hole on the carbide circular blade, thereby pressing the carbide circular blade against the limit plate 2021; then the first pusher 701 is started, so that the support seat is below the cutting edge, and the polishing plate 703 abuts against the inclined surface of the cutting edge, and then the second pusher 7024 is started, and the second pusher 7024 makes the polishing plate 703 abut against the cutting edge; at this time, since there is an induction signal output on the proximity sensor 6 on the fixing ring 501, the driving member 4 can be started, and the driving member 4 is started to drive the mounting tube 202 to start rotating on the seat body 201, thereby driving the carbide circular blade to rotate to achieve polishing of its cutting edge. At the same time, the nozzle 801 sprays coolant to cool the position where the cutting edge and the polishing sheet abut.

[0040] After polishing is completed, the driving member 4 stops operating. After the mounting tube 202 stops rotating, the second pushing member 7024 stops breathing, so that the polishing plate 703 no longer presses against the cutting edge. Then the first pushing member 701 returns to its original position, and then the mounting driving rod is removed from the fixing ring 501, and the polished carbide circular blade can be removed from the mounting tube 202.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A carbide circular blade polishing device, comprising a frame (1), a mounting seat (2) and a blade fixing assembly (3), characterized in that: The mounting seat (2) comprises a seat body (201) and a mounting tube (202); the seat body (201) is arranged on the frame (1); the mounting tube (202) is passed through the seat body (201) and can rotate around its own axis on the seat body (201); the blade fixing assembly (3) comprises a fixing rod (301) and a fixing member (302); a plurality of fixing members (302) are provided and are all arranged at one end of the mounting tube (202); a plurality of fixing members (302) are arranged on the mounting tube (202); The hard alloy circular blades are circumferentially distributed on the tube (202), and can be sleeved on one end of the mounting tube (202) provided with the fixing piece (302). The fixing rod (301) can be plugged into and matched with one end of the mounting tube (202) provided with the fixing piece (302). When the fixing rod (301) is plugged into and matched with the mounting tube (202), the fixing piece (302) extends from the mounting tube (202) to fix the hard alloy circular blades sleeved on the mounting tube (202).

2. A carbide circular blade polishing device according to claim 1, characterized in that: The fixing member (302) comprises a connecting rod (3021), a first abutting block (3022), a second abutting block (3023) and a first spring (3024); the connecting rod (3021) is passed through the side wall of the mounting tube (202); the axis of the connecting rod (3021) is perpendicular to the axis of the mounting tube (202); the first abutting block (3022) is located inside the mounting tube (202) and connected to the connecting rod (3021); the second abutting block (3023) is located outside the mounting tube (202) and connected to the other end of the connecting rod (3021); the first spring (3024) is sleeved on the connecting rod (3021); one end of the first spring (3024) is connected to the inner wall of the mounting tube (202); and the other end of the first spring (3024) is connected to the first abutting block (3022).

3. A carbide circular blade polishing device according to claim 2, characterized in that: A limit plate (2021) is provided on the mounting tube (202), and the limit plate (2021) is located between the second abutting block (3023) and the seat body (201). The second abutting block (3023) includes a first mounting block (30231), a fixed block (30232), a wedge block (30233) and a second spring (30234). The first mounting block (30231) is connected to the connecting rod (3021). The first mounting block (30231) is provided with a first sliding groove (30235) and a second sliding groove (30236) which are parallel to each other. A connecting channel (30237) is provided between the first sliding groove (30235) and the second sliding groove (30236). The fixed block (30232) is slidably provided on the connecting rod (3021). In the first slide groove (30235), one end of the second spring (30234) is fixedly arranged in the first slide groove (30235), and the other end of the second spring (30234) is connected to the fixed block (30232), and the fixed block (30232) is used to abut against the side wall of the mounting hole on the cemented carbide circular blade; the wedge block (30233) is slidably arranged in the second slide groove (30236), and a clamping space for clamping the cemented carbide circular blade is formed between the wedge surface on the wedge block (30233) and the limit plate (2021), and the sliding direction of the wedge block (30233) in the second slide groove (30236) is opposite to the sliding direction of the fixed block (30232) in the first slide groove (30235).

4. A cemented carbide circular blade polishing device according to claim 3, characterized in that: The seat body (201) is provided with a driving member (4) for driving the mounting tube (202) to rotate around its own axis on the seat body (201); a surface of the limiting plate (2021) close to the seat body (201) is provided with a plurality of balls (2022) by means of a ball hinge, and each of the balls (2022) is in contact with the seat body (201).

5. A carbide circular blade polishing device according to claim 2, characterized in that: The fixing rod (301) comprises a driving portion (3011) and an inserting portion (3012), wherein the driving portion (3011) is used to abut against a first abutting block (3022) located in the mounting tube (202), and the inserting portion (3012) can be inserted and matched with the mounting tube (202).

6. A cemented carbide circular blade polishing device according to claim 5, characterized in that: The seat body (201) is provided with a retaining frame (5), the retaining frame (5) is provided with a fixing ring (501) for the fixing rod (301) to pass through, and the fixing ring (501) is provided with a proximity sensor (6) capable of sensing a plug-in portion (3012) on the fixing rod (301).

7. A cemented carbide circular blade polishing device according to claim 1, characterized in that: The seat body (201) is provided with a polishing assembly (7), and the polishing assembly (7) comprises a first pusher (701), a polishing seat (702) and a polishing plate (703); the first pusher (701) is provided on the seat body (201) and is used to push the polishing seat (702) to move in the direction of the mounting tube (202); the polishing plate (703) is provided on the polishing seat (702) and is used to polish the cutting edge of a cemented carbide circular blade.

8. A carbide circular blade polishing device according to claim 7, characterized in that: The polishing seat (702) includes a connecting block (7021), a second mounting block (7022) and a supporting block (7023), wherein the connecting block (7021) is connected to the first pushing member (701), the supporting block (7023) is vertically connected to one end of the supporting block (7023) and slidably cooperates with the seat body (201), the second mounting block (7022) is arranged at the other end of the connecting block (7021), the polishing plate (703) is hinged on the second mounting block (7022), and the second mounting block (7022) is provided with a second pushing member (7024) for driving the polishing plate (703) to rotate around the axis of the hinge shaft with the second mounting block (7022), and the distance between the polishing plate (703) and the supporting block (7023) gradually increases from approaching the first pushing member (701) to away from the first pushing member (701).

9. A cemented carbide circular blade polishing device according to claim 7, characterized in that: The seat body (201) is provided with a cooling pipe (8), and the cooling pipe (8) is provided with a nozzle (801), and the nozzle (801) is used to spray cooling liquid toward the abutment between the polishing plate (703) and the hard alloy circular blade.

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