CN111590400A

CN111590400A - Knife sharpener capable of adjusting grinding angle of knife

Info

Publication number: CN111590400A
Application number: CN202010476788.9A
Authority: CN
Inventors: 龙晓斌; 胡海峰; 龙川
Original assignee: Zhongshan Zhongke Intelligent Manufacturing Research Institute Co ltd
Current assignee: Zhongshan Zhongke Intelligent Manufacturing Research Institute Co ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-08-28

Abstract

The invention discloses a knife sharpener capable of adjusting the grinding angle of a knife, which comprises a workbench, a knife fixing mechanism and a grinding mechanism; the workbench is used for bearing the cutter fixing mechanism and the grinding mechanism; the cutter fixing mechanism comprises a die holder capable of adjusting the swing angle, and the die holder is used for fixing a ground workpiece; the grinding mechanism is arranged on one side of the die holder and is used for grinding a workpiece to be ground fixed on the die holder; the grinding angle of the ground workpiece is adjusted by adjusting the swing angle of the die holder; the workpiece to be ground is a cutter; when the tool grinding mechanism is used, a tool is clamped on the die holder, the tool can be ground through the grinding mechanism, when the tool grinding angle needs to be realized, the tool grinding angle can be adjusted only by adjusting the swing angle of the die holder, the grinding angle of the tool grinding mechanism does not need to be rotated, the design of the tool grinding mechanism can be simplified, and the difficulty in realizing the adjustment of the tool grinding angle can be reduced.

Description

Knife sharpener capable of adjusting grinding angle of knife

Technical Field

The invention relates to the field of cutter grinding machines, in particular to a knife grinder capable of adjusting the grinding angle of a cutter.

Background

The cutter is the indispensable instrument among people's daily life, need grind so that the cutter becomes sharp to the cutter during production cutter, the grinding of tradition to the cutter is accomplished through the manual work of people, the manual sword of whetting a knife, not only work efficiency is low, output is little, the manual work consumes greatly, need invest a lot of mankind, and be difficult to guarantee that the cutter after the grinding can keep the uniformity, though automatic cutter grinder has appeared on the market now, but cutter grinder among the prior art realizes the grinding of cutting edge through the angle of rotating grinding mechanism, can make grinding mechanism structure become complicated like this, it is big to realize the degree of difficulty.

Disclosure of Invention

The invention aims to provide a knife sharpener capable of adjusting the grinding angle of a knife, which can directly adjust the grinding angle through a knife installation die holder, so that the structure of a grinding mechanism is simple and the realization difficulty is low.

In order to achieve the purpose, the invention adopts the following technical scheme:

a knife sharpener capable of adjusting the grinding angle of a knife comprises a workbench, a knife fixing mechanism and a grinding mechanism;

the workbench is used for bearing the cutter fixing mechanism and the grinding mechanism;

the cutter fixing mechanism comprises a die holder capable of adjusting the swing angle, and the die holder is used for fixing a workpiece to be ground;

the grinding mechanism is arranged on one side of the die holder and is used for grinding a workpiece to be ground, which is fixed on the die holder;

the grinding angle of the ground workpiece is adjusted by adjusting the swing angle of the die holder.

Preferably, the grinding mechanism is movable on the table in an X-axis direction, a Y-axis direction, and a Z-axis direction, respectively.

Preferably, the cutter fixing mechanism further comprises a die holder mounting table and a pushing device;

the die holder is rotatably arranged on the front end surface of the die holder mounting table;

the pushing device is arranged on the workbench and can push the die holder, so that the adjustment of the swing angle of the die holder relative to the die holder mounting table is realized.

Preferably, the tool fixing mechanism further comprises a reset element, the reset element is installed on the die holder installation table and the die holder, and the reset element enables the die holder to reset towards the direction opposite to the pushing direction of the pushing device.

Preferably, the pushing device comprises a screw rod and a movable push rod penetrating through the die holder mounting table, the movable push rod penetrates through the front end face and the rear end face of the die holder mounting table and can move back and forth on the die holder mounting table, one end of the movable push rod abuts against the die holder, the other end of the movable push rod is pushed by the screw rod, and the movable push rod can push the die holder in a moving stroke, so that the adjustment of the swing angle of the die holder relative to the die holder mounting table is realized.

Preferably, the die holder mounting table is rotatable; at least 2 die holders are distributed along the same rotating circumference of the die holder mounting table; the number of the movable push rods is equal to that of the die holders, and the movable push rods are arranged corresponding to the die holders.

Preferably, an X-axis moving unit is arranged on the worktable, a Z-axis moving unit is arranged on the X-axis moving unit, a Y-axis moving unit is arranged on the Z-axis moving unit, the grinding mechanism is arranged on the Y-axis moving unit, and the grinding mechanism realizes adjustment of the grinding position through three-axis movement of the X-axis moving unit, the Y-axis moving unit and the Z-axis moving unit.

Preferably, the X-axis moving unit includes a first guide rail, a first slider engaged with the first guide rail, a first driving device, and a first supporting plate, the first guide rail is mounted on the worktable, the first slider is mounted at the bottom of the first supporting plate, the first slider is movable on the first guide rail, the first driving device is mounted on the worktable, and the first driving device is capable of pushing the first supporting plate to move on the first guide rail in the X-axis direction.

Preferably, the Z-axis moving unit includes a plurality of screws, and a transmission nut, a third power source and a second supporting plate that are engaged with the screws, the plurality of screws are vertically distributed on the first supporting plate at intervals in the circumferential direction, and one ends of the screws penetrate through the first supporting plate and are provided with a third transmission wheel, the transmission nut is fixedly connected with the second supporting plate, the third power source is vertically installed on the first supporting plate, a fourth transmission wheel is installed on a power output shaft of the third power source, and the fourth transmission wheel is used for driving the third transmission wheel to rotate, so that the third power source can push the second supporting plate to move along the Z-axis direction.

Preferably, the Y-axis moving unit includes a second guide rail, a second slider engaged with the second guide rail, and a second driving device, the second guide rail is mounted on a second supporting plate, the second slider is mounted at the bottom of the grinding mechanism, the second slider is movable on the second guide rail, the second driving device is mounted on the second supporting plate, and the second driving device can push the grinding mechanism to move on the second guide rail along the Y-axis direction.

The invention has the beneficial effects that: the invention comprises a workbench, a cutter fixing mechanism and a grinding mechanism; the workbench is used for bearing the cutter fixing mechanism and the grinding mechanism; the cutter fixing mechanism comprises a die holder capable of adjusting the swing angle, and the die holder is used for fixing a ground workpiece; the grinding mechanism is arranged on one side of the die holder and is used for grinding a workpiece to be ground fixed on the die holder; the adjustment of the grinding angle of the ground workpiece is realized by adjusting the swing angle of the die holder; the workpiece to be ground is a cutter; when the tool grinding mechanism is used, a tool is clamped on the die holder, the tool can be ground through the grinding mechanism, when the tool grinding angle needs to be achieved, the tool grinding angle can be adjusted only by adjusting the swing angle of the die holder, the grinding angle of the tool grinding mechanism does not need to be rotated, the design of the tool grinding mechanism can be simplified, and the difficulty in achieving adjustment of the tool grinding angle can be reduced.

Drawings

Fig. 1 is a schematic perspective view (without a worktable) of the knife sharpener of the present invention;

FIG. 2 is a schematic perspective view of the knife sharpener of the present invention (with a worktable);

FIG. 3 is a left side view (with a table) of the knife sharpener of the present invention;

fig. 4 is a perspective view of the cutter fixing mechanism provided in the present invention (the die holder is not pushed out);

FIG. 5 is a front view of the knife holding mechanism provided in FIG. 4;

FIG. 6 is a perspective view of the cutter-holding mechanism provided in FIG. 4 without the die holder mounting block;

fig. 7 is a perspective view (die holder pushed out state) of the cutter fixing mechanism provided by the present invention;

FIG. 8 is a front view of the knife holding mechanism provided in FIG. 7;

FIG. 9 is a perspective view of the cutter-holding mechanism provided in FIG. 7 without the die holder mounting block;

FIG. 10 is a perspective view of a tool holding mechanism of the multi-die holder design provided by the present invention;

FIG. 11 is an exploded view provided in FIG. 10;

FIG. 12 is a front view (with the die holder not pushed out) as provided in FIG. 10;

FIG. 13 is a front view (die holder pushed out state) provided in FIG. 10;

fig. 14 is a schematic three-dimensional structure view of the grinding mechanism, the X-axis moving unit, the Y-axis moving unit and the Z-axis moving unit provided by the present invention;

FIG. 15 is a schematic perspective view of the present invention from another angle as shown in FIG. 14;

fig. 16 is a schematic exploded view of the structure of fig. 14 according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, the present embodiment provides a knife sharpener capable of adjusting the grinding angle of a knife, which comprises a worktable 100, a knife fixing mechanism 110 and a grinding mechanism 120; the worktable 100 is used for carrying the tool fixing mechanism 110 and the grinding mechanism 120; the cutter fixing mechanism 110 comprises a die holder 2 with an adjustable swing angle, and the die holder 2 is used for fixing a ground workpiece 200; the grinding mechanism 120 is arranged on one side of the die holder 2 and is used for grinding a workpiece 200 to be ground, which is fixed on the die holder, and the grinding mechanism 120 is a grinder; the adjustment of the grinding angle of the workpiece to be ground 200 is realized by adjusting the swing angle of the die holder 2; the workpiece 200 to be ground is a tool; when the tool grinding device is used, a tool is clamped on the die holder 2, the tool can be ground through the grinding mechanism 120, when the tool grinding angle needs to be achieved, the tool grinding angle can be adjusted only by adjusting the swing angle of the die holder 2, the grinding angle of the tool grinding mechanism 120 does not need to be rotated, the design of the tool grinding mechanism 120 can be simplified, and the difficulty in achieving adjustment of the tool grinding angle can be reduced.

As shown in fig. 4 to 9, the tool fixing mechanism 110 further includes a die holder mounting table 1 and an ejector 3; the die holder 2 is hinged on the front end surface of the die holder mounting table 1; the pushing device 3 is arranged on the workbench, the pushing device 3 can push the die holder 2, so that the adjustment of the swing angle of the die holder 2 relative to the die holder installation table 1 is realized, when the tool grinding device is used, a tool is clamped on the die holder 2, the tool grinding device is combined, the tool can be ground, when the tool grinding angle is needed to be realized, the die holder 2 can adjust the swing angle through the pushing device 3, the grinding angle of the tool grinding device does not need to be rotated, the design of the tool grinding device can be simplified, and the difficulty in achieving the adjustment of the tool grinding angle can be reduced.

Cutter fixed establishment still includes reset element 4, is provided with fixed plate 6 on the rear end face of die holder mount table 1, reset element 4 installs between fixed plate 6 and die holder 2, reset element 4 is the extension spring, has been put the extension spring spliced pole 7 that is used for fixed extension spring respectively on fixed plate 6 and die holder 2, extension spring one end is connected with extension spring spliced pole 7 on the fixed plate 6, and the other end is connected with the extension spring spliced pole 7 at the 2 backs of die holder, and this reset element 4 makes die holder 2 reset towards the opposite direction of the thrustor 3 thrusting directions.

The pushing device 3 comprises a screw rod 31 and a movable push rod 32 penetrating through the die holder mounting table 1, the movable push rod 32 penetrates through the front end surface and the rear end surface of the die holder mounting table 1 and can move back and forth on the die holder mounting table 1, the reset elements 4 are respectively arranged on two sides of the movable push rod 32, one end of the movable push rod 32 penetrates through the front end surface of the die holder mounting table 1 and abuts against the die holder 2, the other end of the movable push rod 32 penetrates through the fixed plate 6 and is pushed by the screw rod 31, and the movable push rod 32 can push the die holder 2 in a moving stroke, so that the adjustment of the swinging angle of the die holder 2 relative to the die holder mounting table 1 is realized.

The pushing device 3 further comprises a mounting bracket 33, a second power source 34 (a motor), a bearing seat 35 for supporting the screw rod 31, a slide rail 36 mounted at the top of the mounting bracket 33, a slide block 37 in sliding fit with the slide rail 36, a nut seat 38 and a first push rod 39, the mounting bracket 33 is mounted on the table 100, the second power source 34 is mounted on the mounting bracket 33, the bearing seat 35 is arranged at the top of the mounting bracket 33, one end of the screw rod 31 penetrates out of the bearing seat 35 and is connected with a first driving wheel, a second driving wheel is arranged at the power output end of the second power source 34, the second power source 34 drives a first driving wheel through the second driving wheel, the first driving wheel drives the screw rod 31 to rotate, the nut seat 38 is mounted on the slide block 37, the nut on the screw rod 31 is mounted in the nut seat 38, and the other end of the screw rod 31 penetrates out of the nut seat 38; one end of the first push rod 39 is mounted on one side surface of the nut seat 38, the other end of the first push rod 39 is used for pushing the movable push rod 32, when the lead screw 31 rotates, the nut on the lead screw 31 drives the nut seat 38 to advance or retract, so that the first push rod 39 is driven to be pushed out or retracted, a clearance hole for the lead screw 31 to penetrate through is formed in the first push rod 39, the lead screw 31 is prevented from interfering with the first push rod 39 when the lead screw 31 controls the first push rod 39 to retract, the structure is simple, the precision of the lead screw 31 is high, and the high-precision control of the grinding angle of the die holder 2 is conveniently completed; the first driving wheel and the second driving wheel are synchronous wheels, the first driving wheel and the second driving wheel are connected through a synchronous belt (not shown in the figure), and the two synchronous wheels are used, so that the structure is compact; of course, the first driving wheel and the second driving wheel can also be chain wheels, and the first driving wheel and the second driving wheel can be connected through a chain; or the first transmission wheel and the second transmission wheel are gears, and transmission is realized through meshing between the two gears.

In order to make the movable push rod 32 move more smoothly, a guide member, such as a linear bearing, which is matched with the movable push rod 32, may be further disposed on the die holder mounting table 1, so as to reduce the friction force applied to the movable push rod 32, and make the movable push rod 32 slide more smoothly.

As shown in fig. 10 to 13, the tool fixing mechanism further includes a first power source 8 (a motor), a gear and an internal gear type turntable bearing 9 mounted on a power output shaft of the first power source 8, a vertical plate 1001 perpendicular to the table 100 is disposed on the table 100, and the die holder mounting table 1 is rotatably disposed on the vertical plate; the die holder mounting table 1 is fixedly mounted on a turntable bearing 9, the turntable bearing 9 is fixedly mounted on the front end face of the vertical plate, the first power source 8 is fixedly mounted on the rear end face of the vertical plate, a gear on a power output shaft of the first power source 8 is meshed with the turntable bearing 9, the first power source 8 drives the turntable bearing 9 to rotate through the gear, the die holder mounting table 1 rotates along with the turntable bearing 9, the structure is simple, power is sufficient, driving is stable, the rotation angle is convenient to adjust, and the internal tooth type turntable bearing 9 is adopted, so that the structure is compact, and the mounting space can be saved.

The die holder 2 has 2 at least and distributes along the same rotatory circumference of die holder mount table 1, and the design of a plurality of grinding stations makes the cutter tool changing become convenient, simple, and machining efficiency is high, and when changing the cutter, the cutter can keep away from cutter grinding mechanism moreover, makes the cutter change safer.

The number of the movable push rods 32 is equal to that of the die holders 2, and the movable push rods are arranged corresponding to the die holders 2, so that the swing angles of the die holders 2 can be adjusted by only using one screw rod 31, and the die holders are simple in structure and practical.

The cutter is fixed on the die holder 2, the die holder 2 can be a magnetic table, the cutter is fixed in a magnetic suction mode, and the fixing is simple and convenient to operate; the die holder 2 is characterized in that mounting blocks 5 are respectively arranged on two sides of the die holder 2, the die holder 2 is connected with the mounting blocks 5 through a rotating shaft, the die holder 2 can rotate around the rotating shaft, the die holder 2 is fixed on one end face of the die holder mounting table 1 through the mounting blocks 5, and the pushing device 3 achieves adjustment of the swing angle of the die holder 2 through pushing.

In order to prevent the die holder 2 from directly colliding with the die holder mounting table 1 when the die holder 2 is reset, an anti-collision block can be arranged between the die holder 2 and the die holder mounting table 1, the anti-collision block can be fixed on the die holder mounting table 1 or the die holder 2, the embodiment adopts a rigid limiting mode, of course, a flexible limiting mode can also be adopted, specifically, a clamping groove is arranged on a movable push rod 32, a clamping piece (not shown) is arranged in the clamping groove, a compression spring 30 is arranged between the clamping piece and a fixed plate 6, when the lead screw 31 withdraws the thrust force, the movable push rod 32 unloads the thrust force pushing out of the die holder 2, the stretched tension spring resets, at the moment, the compression spring 30 is compressed under the force, the die holder 2 is prevented from colliding with the die holder mounting table 1, the mechanism is simple, the safety is high, the automatic recovery of the die holder 2 can be realized by using the tension spring, the screw rod 31 is not contacted with the movable push rod 32, so that the screw rod 31 can be prevented from colliding with the movable push rod 32 when the die holder mounting table 1 rotates to replace a station.

As shown in fig. 14 to 16, the grinding mechanism 120 is movable on the table 100 in the X-axis direction, the Y-axis direction, and the Z-axis direction, respectively; the grinding mechanism 120 is arranged on the Y-axis moving unit 3A, the grinding mechanism 120 realizes adjustment of a grinding position through three-axis movement of the X-axis moving unit 1A, Y shaft moving unit 3A and the Z-axis moving unit 2A, and three-axis linkage is realized, so that adjustment of the grinding position of the grinding mechanism 120 becomes simple and flexible.

The X-axis moving unit 1A includes a first guide rail 11A, a first slider 12A, a first driving device 13A, and a first supporting plate 14A, the first guide rail 11A is mounted on the workbench 100, the first slider 12A is mounted at the bottom of the first supporting plate 14A, the first slider 12A is movable on the first guide rail 11A, the first driving device 13A is mounted on the workbench 100, the first driving device 13A is capable of pushing the first supporting plate 14A to move on the first guide rail 11A along the X-axis direction, the first driving device 13A includes a motor, 2 synchronizing wheels, and a lead screw, 1 synchronizing wheel is mounted on a power output shaft of the motor, one end of the lead screw is also mounted with one synchronizing wheel, the two synchronizing wheels are connected by a synchronous belt, when the motor is started, the screw rod is driven to rotate, and the nut on the screw rod pushes the first supporting plate 14A to move.

The Z-axis moving unit 2A includes a plurality of screws 21A, a driving nut 22A, a third power source 23A and a second supporting plate 24A, the screws 21A are vertically distributed on the first supporting plate 14A at intervals in the circumferential direction, one end of each screw 21A penetrates through the first supporting plate 14A and is provided with a third driving wheel 25A, the driving nut 22A is fixedly connected with the second supporting plate 24A, the third power source 23A is vertically arranged on the first supporting plate 14A, a fourth driving wheel 26A is arranged on a power output shaft of the third power source 23A, the fourth driving wheel 26A is used for driving the third driving wheel 25A to rotate, so that the third power source 23A can push the second supporting plate 24A to move along the Z-axis direction, the third power source 23A is a motor, and the third driving wheel 25A and the fourth driving wheel 26A are synchronizing wheels, the fourth driving wheel 26A is a driving wheel, the fourth driving wheel 26A is connected with the third driving wheel 25A through a synchronous belt, when the third power source 23A is started, the plurality of screws 21A are driven to rotate at the same time, and the driving nut 22A pushes the second supporting plate 24A to move along the Z-axis direction.

The Y-axis moving unit 3A includes a second guide rail 31A, a second slider 32A engaged with the second guide rail 31A, and a second driving device 33A, the second guide rail 31A is mounted on the second supporting plate 24A, the second slider 32A is mounted on the bottom of the grinding mechanism 120, the second slider 32A is movable on the second guide rail 31A, the second driving means 33A is mounted on the second blade 24A, the second driving device 33A can push the grinding mechanism 120 to move on the second guide rail 31A along the Y-axis direction, the second driving device 33A comprises a motor and a screw rod, a power output shaft of the motor is connected with one end of the screw rod through a coupler, the motor directly drives the screw rod to rotate, a nut on the screw rod is fixedly arranged with the grinding mechanism 120, when the screw rod rotates, the nut pushing grinding mechanism 120 moves on the second guide rail 31A in the Y-axis direction.

Various other modifications and changes can be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the protection scope of the present invention.

Claims

1. The utility model provides a sharpedge grinding machine of adjustable cutter grinding angle which characterized in that: comprises a workbench (100), a cutter fixing mechanism (110) and a grinding mechanism (120);

the workbench (100) is used for carrying the cutter fixing mechanism (110) and the grinding mechanism (120);

the cutter fixing mechanism (110) comprises a die holder (2) with an adjustable swing angle, and the die holder (2) is used for fixing a ground workpiece (200);

the grinding mechanism (120) is arranged on one side of the die holder (2) and is used for grinding a workpiece (200) to be ground, which is fixed on the die holder;

the grinding angle of the workpiece (200) to be ground is adjusted by adjusting the swing angle of the die holder (2).

2. The tool sharpener of claim 1, wherein: the grinding mechanism (120) can move on the workbench (100) along the X-axis direction, the Y-axis direction and the Z-axis direction respectively.

3. The tool sharpener of claim 1, wherein: the cutter fixing mechanism (110) further comprises a die holder mounting table (1) and a pushing device (3);

the die holder (2) is rotatably arranged on the front end surface of the die holder mounting table (1);

the pushing device (3) is arranged on the workbench, and the pushing device (3) can push the die holder (2), so that the adjustment of the swing angle of the die holder (2) relative to the die holder mounting table (1) is realized.

4. The tool holding mechanism for adjusting a grinding angle of a tool according to claim 3, wherein: the cutter fixing mechanism (110) further comprises a reset element (4), the reset element (4) is installed on the die holder installation table (1) and the die holder (2), and the reset element (4) enables the die holder (2) to reset towards the direction opposite to the pushing direction of the pushing device (3).

5. The tool holding mechanism for adjusting a grinding angle of a tool according to claim 3, wherein: the pushing device (3) comprises a screw rod (31) and a movable push rod (32) penetrating through the die holder mounting table (1), the movable push rod (32) penetrates through the front end face and the rear end face of the die holder mounting table (1) and can move back and forth on the die holder mounting table (1), one end of the movable push rod (32) abuts against the die holder (2), the other end of the movable push rod is pushed by the screw rod (31), and the movable push rod (32) can push the die holder (2) in a moving stroke, so that the adjustment of the swinging angle of the die holder (2) relative to the die holder mounting table (1) is realized.

6. The tool holding mechanism for adjusting a grinding angle of a tool according to claim 5, wherein: the die holder mounting table (1) is rotatable; at least 2 die holders (2) are distributed along the same rotating circumference of the die holder mounting table (1); the number of the movable push rods (32) is equal to that of the die holders (2), and the movable push rods are arranged corresponding to the die holders (2).

7. The tool sharpener of claim 2, wherein: be provided with X axle mobile unit (1A) on workstation (100), be provided with Z axle mobile unit (2A) on X axle mobile unit (1A), be provided with Y axle mobile unit (3A) on Z axle mobile unit (2A), grinding mechanism (120) set up on Y axle mobile unit (3A), grinding mechanism (120) realize the adjustment of grinding position through X axle mobile unit (1A), Y axle mobile unit (3A) and Z axle mobile unit (2A) triaxial removal.

8. The tool sharpener of claim 7, wherein: the X-axis moving unit (1A) comprises a first guide rail (11A), a first sliding block (12A) matched with the first guide rail (11A), a first driving device (13A) and a first supporting plate (14A), the first guide rail (11A) is installed on the workbench (100), the first sliding block (12A) is installed at the bottom of the first supporting plate (14A), the first sliding block (12A) can move on the first guide rail (11A), the first driving device (13A) is installed on the workbench (100), and the first driving device (13A) can push the first supporting plate (14A) to move on the first guide rail (11A) along the X-axis direction.

9. The tool sharpener of claim 8, wherein: the Z-axis moving unit (2A) comprises a plurality of screw rods (21A), transmission nuts (22A) matched with the screw rods (21A), a third power source (23A) and a second supporting plate (24A), the plurality of screw rods (21A) are vertically distributed on the first supporting plate (14A) at intervals in the circumferential direction, one end of the screw rod (21A) penetrates out of the first supporting plate (14A) and is provided with a third driving wheel (25A), the transmission nut (22A) is fixedly connected with the second supporting plate (24A), the third power source (23A) is vertically arranged on the first supporting plate (14A), a fourth driving wheel (26A) is mounted on a power output shaft of the third power source (23A), and the fourth driving wheel (26A) is used for driving the third driving wheel (25A) to rotate, so that the third power source (23A) can push the second supporting plate (24A) to move along the Z-axis direction.

10. The tool sharpener of claim 9, wherein: the Y-axis moving unit (3A) comprises a second guide rail (31A), a second sliding block (32A) and a second driving device (33A), wherein the second sliding block (32A) and the second driving device (33A) are matched with the second guide rail (31A), the second guide rail (31A) is installed on a second supporting plate (24A), the second sliding block (32A) is installed at the bottom of the grinding mechanism (120), the second sliding block (32A) can move on the second guide rail (31A), the second driving device (33A) is installed on the second supporting plate (24A), and the second driving device (33A) can push the grinding mechanism (120) to move on the second guide rail (31A) along the Y-axis direction.