Traceless grinding equipment for cutting edge of cutter and using method of traceless grinding equipment

Abstract

The invention relates to the technical field of tool grinding, and discloses tool cutting edge traceless grinding equipment and a using method thereof. The limiting structure comprises a sliding table, first limiting rollers, a second limiting roller and an end limiting plate, the sliding table is movably arranged above the base table and can slide in the two axial directions, the two first limiting rollers which can be close to each other are arranged on the side wall of the sliding table, the second limiting roller is further arranged on the side wall of the sliding table, and the end limiting plate is rotationally connected with the sliding table; the two first limiting rollers are close to the circumferential face for lifting the drill bit, the second limiting rollers are matched to press the cutter handle part of the drill bit, circumferential limiting of the drill bit is achieved, the cutter handle of the drill bit is inserted into the notch of the end limiting plate, and the drill bit can be driven to rotate circumferentially by rotating the end limiting plate. And through the design of the first limiting roller and the second limiting roller, it can be guaranteed that the drill bit cannot deviate during grinding, and better clamping adaptability and use flexibility are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of tool grinding, and in particular to a tool edge traceless grinding device and a use method thereof. Background Art

[0002] Drilling refers to the operation of using a drill bit to make a hole in a solid material. The drill bit is a tool used for drilling. There is a cutting edge at the front end of the drill bit to facilitate the drilling operation. During the processing of the drilling tool, as the cutting edge wears, the cutting edge of the tool needs to be ground with a grinding block to increase the penetration of the tool.

[0003] The prior art discloses a grinding fixture for the cutting edge of a drilling tool (publication number: CN202137646U), which uses a "V"-shaped groove clamp with a certain angle as a positioning and clamping structure for the drilling tool, and the "V"-shaped groove can accommodate cylinders of various specifications, which is suitable for drilling tools with different diameters. The positioning is reliable and safe, ensuring that the front end cutting edge of the drill tool does not shake during the grinding process, and can be quickly released when the tool needs to be rotated to grind another cutting edge.

[0004] In the prior art, bolts are used to resist the position of the drill shank so that the drill bit can be limited and fixed. However, in the actual grinding process, the cutting edge of the drill bit is located at the end and has several cutting edges distributed in a circle, which need to be grinded one by one. This means that when the drill bit is clamped, only one cutting edge can be ground. After the grinding is completed, the drill bit is released and re-clamped. For the cutting edge grinding of the drill bit, the operation is complicated, and repeated clamping and releasing are not conducive to the uniform grinding of the drill bit, and there is a certain room for optimization.

[0005] To this end, we propose a tool edge traceless grinding device and a method for using the same. Summary of the invention

[0006] The present invention mainly solves the technical problem that the drill bit needs to be repeatedly clamped and released when grinding the cutting edge, and provides a tool cutting edge traceless grinding device and a use method thereof.

[0007] In order to achieve the above object, the present invention adopts the following technical solution, a tool edge traceless grinding device, comprising:

[0008] A base, a grinder is installed on the top of the base;

[0009] A limiting structure is arranged above the base for clamping the tool, the limiting structure comprises a slide, a first limiting roller, a second limiting roller and an end limiting plate, the slide is movably arranged above the base, the slide can slide along two axial directions, two first limiting rollers that can approach each other are arranged on the side wall of the slide, a second limiting roller is also arranged on the side wall of the slide, the second limiting roller can press the tool toward the center position of the two first limiting rollers, the end limiting plate is rotatably connected to the slide, and a notch for limiting the tool handle is opened at the end of the end limiting plate;

[0010] The sliding structure is arranged above the base to realize the two-axis sliding of the base.

[0011] As a preferred embodiment of the present invention, the limiting structure further comprises a handle, the handle is fixedly connected to the end limiting plate, and the handle is rotatably connected to the side wall of the slide.

[0012] As a preferred embodiment of the present invention, the limiting structure also includes a first sliding block, a first adjusting screw and a vertical groove. The side wall of the slide table is vertically opened with a vertical groove. The first sliding block is slidably arranged in the vertical groove. The end of the second limiting roller is rotatably connected to the first sliding block. The first adjusting screw is rotatably connected to the slide table and is threadedly connected to the first sliding block.

[0013] As a preferred embodiment of the present invention, the vertical groove is a rectangular groove, the first sliding block is a rectangular block adapted to the vertical groove, a threaded hole is opened through the top of the first sliding block, the first adjusting screw is connected to the threaded hole of the first sliding block, and the lower end of the first adjusting screw is rotatably connected to the bottom surface of the vertical groove.

[0014] As a preferred embodiment of the present invention, the limiting structure also includes a transverse groove, a second sliding block and a second adjusting screw. The side wall of the slide is horizontally provided with a transverse groove, and two second sliding blocks are slidably connected in the transverse groove. The two first limiting rollers are rotatably connected to the two second sliding blocks, and the second adjusting screw is rotatably connected to the slide and pushes the two second sliding blocks to move toward each other.

[0015] As a preferred embodiment of the present invention, the second sliding block is a direction block, the transverse groove and the second sliding block are used in conjunction with each other, the second adjusting screw is a bidirectional screw, the two second sliding blocks respectively have two threaded holes with opposite spiral directions, the second adjusting screw is connected to the threaded holes of the two second sliding blocks, and the ends of the two first limiting rollers are rotatably connected to the corresponding side walls of the second sliding blocks.

[0016] As a preferred embodiment of the present invention, the limiting structure also includes a clamping groove and a pressure plate. The top of the slide forms an inclined surface, the top surface of the slide is provided with a clamping groove, the pressure plate is located in the clamping groove and is locked and fixed to the slide by screws.

[0017] As a preferred embodiment of the present invention, the sliding structure includes a pad, an adjustment seat, an adjustment rod, a sliding channel and a convex rib, the pad is fixedly connected to the base, the sliding channel is opened on the top surface of the pad, the convex rib is slidably connected to the sliding channel and fixedly connected to the adjustment seat, the adjustment rod is slidably connected to the adjustment seat, and the slide is rotatably connected to the adjustment rod.

[0018] As a preferred embodiment of the present invention, the convex ribs and the adjusting rod are vertically cross-distributed, the sliding channel is adapted to the convex ribs, the top surface of the adjusting seat is provided with a groove adapted to the adjusting rod, the adjusting rod is slidably arranged in the groove, an axial hole is provided on the top of the adjusting rod, and a rotating shaft is fixedly arranged at the bottom of the slide, and the rotating shaft is rotatably arranged in the axial hole.

[0019] A tool edge traceless grinding device and a method for using the same, comprising the following steps:

[0020] Step 1: Insert the tool into the notch of the end limit plate;

[0021] Step 2: Rotate the second adjusting screw, and the second adjusting screw drives the two second sliding blocks to move relative to each other in the transverse groove, so that the two first limiting rollers approach each other;

[0022] Step 3: Turn the first adjusting screw, the first adjusting screw moves the first sliding block downward in the vertical slot, and then the first sliding block drives the second limiting roller to approach the two first limiting rollers;

[0023] Step 4: Turn the handle so that the end limit plate drives the tool to rotate and adjust the position of the cutting edge;

[0024] Step 5: Pull the slide to drive the adjustment rod to slide in the groove, or pull the slide to make the adjustment seat drive the convex rib to slide in the sliding channel, thereby realizing the two-axis displacement of the slide, so that the tool head fits the grinding disc to achieve grinding.

[0025] Beneficial Effects

[0026] The present invention provides a tool edge traceless grinding device and a method for using the same. The device has the following beneficial effects:

[0027] 1. A tool edge traceless grinding device and a method of using the same, wherein two first limiting rollers cooperate with a second limiting roller, the two first limiting rollers are brought close to each other to lift the circumferential surface of the drill bit, and the second limiting roller cooperates to press down the shank part of the drill bit, thereby achieving circumferential limitation of the drill bit. At the same time, the shank of the drill bit is inserted into the groove of the end limiting plate, and the circumference of the drill bit can be driven by rotating the end limiting plate. The design of the first limiting roller and the second limiting roller can ensure that the drill bit will not deviate during grinding, and maintain the concentricity of the cutting edge after grinding. The device has better clamping adaptability and flexibility of use. After clamping the tool, the position to be ground can be adjusted by simply rotating the tool.

[0028] 2. This kind of tool edge traceless grinding equipment and its use method, by setting a handle, the handle includes a cross bar and a rotating shaft, the cross bar is fixedly connected to the rotating shaft, the rotating shaft is rotatably connected to the slide and fixedly connected to the end limit plate, by pushing the cross bar, the rotating shaft drives the end limit plate to rotate, and then can smoothly push the tool to rotate in a circle to grind the end edge, which is convenient for operation and use.

[0029] 3. This kind of tool edge traceless grinding equipment and its use method, by rotating the first adjusting screw, the first adjusting screw moves the first sliding block downward in the vertical groove, and then the first sliding block drives the second limiting roller to approach the two first limiting rollers, thereby achieving the limitation above the drill bit, which is convenient for operation.

[0030] 4. This kind of tool edge traceless grinding equipment and its use method, by rotating the second adjusting screw, the second adjusting screw drives the two second sliding blocks to move relative to each other in the transverse groove, and then the two first limiting rollers approach or move away from each other, thereby realizing flexible adjustment of the distance between the two first limiting rollers. The first limiting rollers have better clamping and limiting effects on the circumferential surface of the tool and are more adjustable. Together with the approachable second limiting roller, the diameter range of the tool that can be clamped is greatly improved, thereby improving the versatility of use.

[0031] 5. This kind of tool edge traceless grinding equipment and its use method, since the first limiting roller and the second limiting roller can only clamp cylindrical tools, the clamping effect on rectangular columnar tools is not good, the pressure plate and the slide are locked by screws, and the pressure plate is located in the clamping groove to clamp the rectangular columnar tool and limit it, so that the rectangular columnar tool can be polished, which improves the flexibility of clamping and the adaptability to the tool.

[0032] 6. This kind of tool edge traceless grinding equipment and its use method realizes two-axis displacement of the slide by pulling the slide to drive the adjusting rod to slide in the groove, or pulls the slide so that the adjusting seat drives the convex rib to slide in the sliding channel. The slide can rotate around the middle position of the adjusting rod. When clamping the tool, the position of the cutting edge can be flexibly adjusted to ensure the fit between the cutting edge and the grinding disc. The position of the slide can be flexibly adjusted according to the type of tool, making the grinding process easier and achieving a better grinding effect on the cutting edge. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is one of the overall stereograms of the present invention;

[0034] Figure 2 This is the second overall stereogram of the present invention;

[0035] Figure 3 It is a three-dimensional diagram of the limiting structure and the sliding structure of the present invention;

[0036] Figure 4It is a three-dimensional diagram of the pressing plate of the present invention;

[0037] Figure 5 It is the assembly diagram of the sliding structure of the present invention;

[0038] Figure 6 Schematic diagram of the slide rotation angle.

[0039] Legend: 10. Base; 11. Grinder; 12. Slide; 13. First limit roller; 14. Second limit roller; 15. End limit plate; 16. Handle; 17. First sliding block; 18. First adjusting screw; 19. Vertical groove; 20. Horizontal groove; 21. Second sliding block; 22. Second adjusting screw; 30. Pad; 31. Adjustment seat; 32. Adjustment rod; 33. Sliding channel; 34. Raised rib; 40. Clamping groove; 41. Pressing plate. DETAILED DESCRIPTION

[0040] A tool edge non-marking grinding device and a method of using the same, such as Figure 1 As shown, including:

[0041] A base 10, a grinder 11 is installed on the top of the base 10, specifically, the grinder 11 includes a motor and a grinding wheel fixedly installed on the output shaft of the motor, the motor is fixedly installed on the top of the base 10, and a supporting leg is fixedly installed on the bottom of the base 10 to keep the base 10 stable. The motor needs to be electrically connected to the control switch, and the specific specifications are not restricted too much here.

[0042] like Figure 1 , Figure 2 and Figure 3 As shown, a limiting structure is arranged above the base 10 for clamping the tool, and the limiting structure includes a slide 12, a first limiting roller 13, a second limiting roller 14 and an end limiting plate 15. The slide 12 is movably arranged above the base 10, and the slide 12 can slide along two axial directions. Two first limiting rollers 13 that can approach each other are arranged on the side wall of the slide 12, and a second limiting roller 14 is also arranged on the side wall of the slide 12. The second limiting roller 14 can press the tool toward the center position of the two first limiting rollers 13, and the end limiting plate 15 is rotatably connected to the slide 12, and a notch for limiting the tool handle is opened at the end of the end limiting plate 15;

[0043] In the present scheme, in order to grind the cutting edge of the drilling tool, two first limiting rollers 13 cooperate with the second limiting roller 14. The two first limiting rollers 13 are brought close to each other to lift the circumferential surface of the drill bit, and the second limiting roller 14 cooperates to press down the shank part of the drill bit to achieve circumferential limitation of the drill bit. At the same time, by inserting the shank of the drill bit into the groove of the end limiting plate 15, the end limiting plate 15 can be rotated to drive the drill bit to rotate circumferentially. The design of the first limiting roller 13 and the second limiting roller 14 can ensure that the drill bit will not deviate during grinding, maintain the concentricity of the cutting edge after grinding, and have better clamping adaptability and flexibility of use.

[0044] like Figure 1 and Figure 3 As shown, the limiting structure also includes a handle 16, which is fixedly connected to the end limiting plate 15, and the handle 16 is rotatably connected to the side wall of the slide 12. By setting the handle 16, the handle 16 includes a cross bar and a rotating shaft, the cross bar is fixedly connected to the rotating shaft, the rotating shaft is rotatably connected to the slide 12 and fixedly connected to the end limiting plate 15, and by pushing the cross bar, the rotating shaft drives the end limiting plate 15 to rotate, thereby being able to smoothly push the tool to rotate in a circle to grind the cutting edge of the end, which is convenient for operation and use.

[0045] like Figure 3 As shown, the limiting structure also includes a first sliding block 17, a first adjusting screw 18 and a vertical groove 19. The side wall of the slide 12 is vertically provided with the vertical groove 19. The first sliding block 17 is slidably arranged in the vertical groove 19. The end of the second limiting roller 14 is rotatably connected with the first sliding block 17. The first adjusting screw 18 is rotatably connected with the slide 12 and is threadedly connected with the first sliding block 17. The vertical groove 19 is a rectangular groove. The first sliding block 17 is a rectangular block adapted to the vertical groove 19. A threaded hole is formed through the top of the first sliding block 17. The first adjusting screw 18 is connected with the threaded hole of the first sliding block 17. The lower end of the first adjusting screw 18 is rotatably connected with the inner bottom surface of the vertical groove 19.

[0046] In this solution, by rotating the first adjusting screw 18, the first adjusting screw 18 moves the first sliding block 17 downward in the vertical groove 19, and then the first sliding block 17 drives the second limiting roller 14 to approach the two first limiting rollers 13, thereby limiting the top of the drill bit and facilitating operation.

[0047] like Figure 3As shown, the limiting structure also includes a transverse groove 20, a second sliding block 21 and a second adjusting screw 22. The side wall of the slide 12 is horizontally provided with a transverse groove 20, and the two second sliding blocks 21 are slidably connected in the transverse groove 20. The two first limiting rollers 13 are rotatably connected with the two second sliding blocks 21. The second adjusting screw 22 is rotatably connected with the slide 12 and pushes the two second sliding blocks 21 to move toward each other. The second sliding block 21 is a direction block. The transverse groove 20 and the second sliding block 21 cooperate with each other. The second adjusting screw 22 is a bidirectional screw. The two second sliding blocks 21 are respectively provided with two threaded holes with opposite spiral directions. The second adjusting screw 22 is connected with the threaded holes of the two second sliding blocks 21, and the ends of the two first limiting rollers 13 are rotatably connected with the corresponding side walls of the second sliding blocks 21.

[0048] In the present scheme, in order to adjust the distance between the two first limiting rollers 13, by rotating the second adjusting screw 22, the second adjusting screw 22 drives the two second sliding blocks 21 to move relative to each other in the transverse groove 20, so that the two first limiting rollers 13 are moved closer to or away from each other, thereby realizing flexible adjustment of the distance between the two first limiting rollers 13. The first limiting roller 13 has better clamping and limiting effect on the circumferential surface of the tool and is more adjustable. Together with the approachable second limiting roller 14, the range of tool diameters that can be clamped is greatly improved, thereby improving the versatility of use.

[0049] like Figure 4 and Figure 6 As shown, the limiting structure also includes a clamping groove 40 and a pressing plate 41. The top of the slide 12 forms an inclined surface, the top surface of the slide 12 is provided with a clamping groove 40, and the pressing plate 41 is located in the clamping groove 40 and is locked and fixed with the slide 12 by screws;

[0050] In this solution, since the first limiting roller 13 and the second limiting roller 14 can only clamp cylindrical tools, the clamping effect on rectangular cylindrical tools is not good. The pressure plate 41 and the slide 12 are locked by screws, and the pressure plate 41 is located in the clamping groove 40 to clamp and limit the rectangular cylindrical tool, so that the rectangular cylindrical tool can be polished, thereby improving the flexibility of clamping and the adaptability to the tool.

[0051] like Figure 3 and Figure 5 As shown, the sliding structure is arranged above the base 10 to realize the two-axis sliding of the base 10;

[0052] The sliding structure includes a pad 30, an adjustment seat 31, an adjustment rod 32, a sliding channel 33 and a convex rib 34. The pad 30 is fixedly connected to the base 10. The top surface of the pad 30 is provided with a sliding channel 33. The convex rib 34 is slidably connected to the sliding channel 33 and is fixedly connected to the adjustment seat 31. The adjustment rod 32 is slidably connected to the adjustment seat 31. The slide 12 is rotatably connected to the adjustment rod 32. The convex rib 34 and the adjustment rod 32 are vertically cross-distributed. The sliding channel 33 is adapted to the convex rib 34. The top surface of the adjustment seat 31 is provided with a groove adapted to the adjustment rod 32. The adjustment rod 32 is slidably set in the groove. The top of the adjustment rod 32 is provided with an axial hole. The bottom of the slide 12 is fixedly provided with a rotating shaft, and the rotating shaft is rotatably set in the axial hole.

[0053] In this solution, the slide 12 is pulled to drive the adjusting rod 32 to slide in the groove, or the slide 12 is pulled so that the adjusting seat 31 drives the convex rib 34 to slide in the sliding channel 33, thereby realizing the two-axis displacement of the slide 12. The slide 12 can rotate around the middle position of the adjusting rod 32. When clamping the tool, the position of the cutting edge can be flexibly adjusted to ensure the degree of fit between the cutting edge and the grinding disk. The position of the slide 12 can be flexibly adjusted according to the type of tool, which makes the grinding process easier and has a better grinding effect on the cutting edge.

[0054] Working principle of the present invention:

[0055] Step 1: insert the tool into the notch of the end stop plate 15;

[0056] Step 2: Rotate the second adjusting screw 22, and the second adjusting screw 22 moves the two second sliding blocks 21 to move relative to each other in the transverse groove 20, so that the two first limiting rollers 13 are close to each other;

[0057] Step 3: Rotate the first adjusting screw 18, so that the first adjusting screw 18 moves the first sliding block 17 downward in the vertical slot 19, and then the first sliding block 17 drives the second limiting roller 14 to approach the two first limiting rollers 13;

[0058] Step 4: Turn the handle 16 so that the end limit plate 15 drives the tool to rotate and adjust the position of the cutting edge;

[0059] Step 5: Pull the slide 12 to drive the adjustment rod 32 to slide in the groove, or pull the slide 12 so that the adjustment seat 31 drives the convex rib 34 to slide in the sliding channel 33, thereby realizing the two-axis displacement of the slide 12, so that the tool head fits the grinding disc to achieve grinding.

[0060] The grinding disc can be of finer mesh size to ensure fine grinding and reduce scratches, and the slide table 12 with flexible position adjustment can be used to grind the tool edge smoothly, further reducing scratches.

[0061] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A tool edge traceless grinding device, characterized in that: include: A base (10), a grinder (11) is installed on the top of the base (10); A limiting structure is arranged above a base (10) for clamping a tool, the limiting structure comprising a slide (12), a first limiting roller (13), a second limiting roller (14) and an end limiting plate (15); the slide (12) is movably arranged above the base (10); the slide (12) can slide along two axial directions; two first limiting rollers (13) that can approach each other are arranged on the side wall of the slide (12); a second limiting roller (14) is also arranged on the side wall of the slide (12); the second limiting roller (14) can press the tool downward toward the center position of the two first limiting rollers (13); the end limiting plate (15) is rotatably connected to the slide (12); and a notch for limiting the tool handle is provided at the end of the end limiting plate (15); The sliding structure is arranged above the base (10) and is used to realize two-axis sliding of the base (10).

2. The tool edge traceless grinding device according to claim 1, characterized in that: The limiting structure further comprises a handle (16), wherein the handle (16) is fixedly connected to the end limiting plate (15), and the handle (16) is rotatably connected to the side wall of the slide (12).

3. The tool edge traceless grinding device according to claim 1, characterized in that: The limiting structure also includes a first sliding block (17), a first adjusting screw (18) and a vertical groove (19); the side wall of the slide (12) is vertically provided with a vertical groove (19); the first sliding block (17) is slidably arranged in the vertical groove (19); the end of the second limiting roller (14) is rotatably connected to the first sliding block (17); the first adjusting screw (18) is rotatably connected to the slide (12) and is threadedly connected to the first sliding block (17).

4. The tool edge traceless grinding device according to claim 3, characterized in that: The vertical groove (19) is a rectangular groove, the first sliding block (17) is a rectangular block adapted to the vertical groove (19), a threaded hole is penetrated through the top of the first sliding block (17), the first adjusting screw (18) is connected to the threaded hole of the first sliding block (17), and the lower end of the first adjusting screw (18) is rotatably connected to the inner bottom surface of the vertical groove (19).

5. The tool edge traceless grinding device according to claim 1, characterized in that: The limiting structure further comprises a transverse groove (20), a second sliding block (21) and a second adjusting screw (22); the side wall of the slide (12) is horizontally provided with a transverse groove (20); two second sliding blocks (21) are slidably connected in the transverse groove (20); two first limiting rollers (13) are rotationally connected to the two second sliding blocks (21); the second adjusting screw (22) is rotationally connected to the slide (12) and pushes the two second sliding blocks (21) to move toward each other.

6. The tool edge traceless grinding device according to claim 5, characterized in that: The second sliding block (21) is a direction block, the transverse groove (20) and the second sliding block (21) are used in conjunction with each other, the second adjusting screw (22) is a bidirectional screw, the two second sliding blocks (21) are respectively provided with two threaded holes with opposite spiral directions, the second adjusting screw (22) is connected to the threaded holes of the two second sliding blocks (21), and the ends of the two first limiting rollers (13) are rotatably connected to the corresponding side walls of the second sliding blocks (21).

7. The tool edge non-marking grinding device according to claim 1, characterized in that: The limiting structure also includes a clamping groove (40) and a pressure plate (41); the top of the slide (12) forms an inclined surface; the clamping groove (40) is provided on the top surface of the slide (12); the pressure plate (41) is located in the clamping groove (40) and is locked and fixed to the slide (12) by screws.

8. The tool edge non-marking grinding device according to claim 1, characterized in that: The sliding structure comprises a pad (30), an adjustment seat (31), an adjustment rod (32), a sliding channel (33) and a convex rib (34); the pad (30) is fixedly connected to the base (10); the sliding channel (33) is provided on the top surface of the pad (30); the convex rib (34) is slidably connected to the sliding channel (33) and is fixedly connected to the adjustment seat (31); the adjustment rod (32) is slidably connected to the adjustment seat (31); and the slide (12) is rotationally connected to the adjustment rod (32).

9. The tool edge traceless grinding device according to claim 8, characterized in that: The convex rib (34) and the adjusting rod (32) are vertically cross-distributed, the sliding channel (33) is adapted to the convex rib (34), the top surface of the adjusting seat (31) is provided with a groove adapted to the adjusting rod (32), the adjusting rod (32) is slidably arranged in the groove, an axial hole is provided on the top of the adjusting rod (32), and a rotating shaft is fixedly provided at the bottom of the slide table (12), and the rotating shaft is rotatably arranged in the axial hole.

10. A method for using a tool edge traceless grinding device, characterized in that: The following steps are involved: The first step: inserting the tool into the notch of the end stop plate (15); Step 2: rotating the second adjusting screw (22), so that the second adjusting screw (22) moves the two second sliding blocks (21) relative to each other in the transverse groove (20), thereby moving the two first limiting rollers (13) closer to each other; Step 3: rotating the first adjusting screw (18), the first adjusting screw (18) drives the first sliding block (17) to move downward in the vertical groove (19), and then the first sliding block (17) drives the second limiting roller (14) to approach the two first limiting rollers (13); Step 4: Turn the handle (16) so that the end stopper (15) drives the tool to rotate and adjust the position of the cutting edge; Step 5: Pull the slide (12) to drive the adjustment rod (32) to slide in the groove, or pull the slide (12) so that the adjustment seat (31) drives the convex rib (34) to slide in the sliding channel (33), thereby realizing the two-axis displacement of the slide (12), so that the tool head fits the grinding disc to achieve grinding.

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