CN112222958B

CN112222958B - Sharpening machine

Info

Publication number: CN112222958B
Application number: CN202011148374.XA
Authority: CN
Inventors: 李少华
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2025-12-30
Anticipated expiration: 2040-10-23
Also published as: CN112222958A

Abstract

This invention discloses a knife sharpening machine, comprising a grinding wheel moving platform, a knife mounting platform, a motor, a grinding wheel, a knife clamping mechanism, and a base. The grinding wheel moving platform includes a motor mounting component, a vibration-damping transmission belt component, and a pulley component. The motor mounting component carries the motor. The motor mounting component is fixedly connected to the vibration-damping transmission belt component. The pulley component tensions the vibration-damping transmission belt component. The pulley component is connected to the vibration-damping transmission belt component. The knife clamping mechanism includes an intermediate shaft, an intermediate shaft support, a clamp, an angle adjustment component, an angle positioning component, and a locking part. The intermediate shaft support is connected to the intermediate shaft. The angle adjustment component is connected to the intermediate shaft and can rotate relative to the base. The angle adjustment component carries the clamp. The locking part can lock the clamp relative to the base. This invention ensures the stability of knife sharpening.

Description

Knife grinder

Technical Field

The invention relates to the technical field of cutter polishing, in particular to a knife grinder.

Background

The hardware cutting processing industry has a peculiar phenomenon, and many factories have sharpening equipment, but the sharpening equipment is idle, so that the prior sharpening equipment is poor in general effect, and workers prefer manual sharpening. That is, current sharpening devices do not sharpen as effectively as manual sharpening. Sharpening is a headache of workers in most hardware cutting processing industries, manual sharpening is a technology, is difficult to master, and has high and low sharpening levels according to people, so that the effect of manual sharpening is unstable.

The foregoing background is only for the purpose of providing an understanding of the principles and concepts of the invention and is not necessarily in the prior art to the invention and is not intended to be used as an admission that the background of the invention is prior art to the present invention or that it is prior art to the present invention that it has been disclosed in the background of the invention.

Disclosure of Invention

The invention provides a knife grinder, which can furthest avoid vibration of a grinding tool and a cutter when the knife grinder mainly used for grinding tool movement grinds the cutter and can ensure the stability of knife grinding.

A knife grinder comprises a grinding tool moving platform, a tool carrying platform, a motor, a grinding tool, a tool clamping mechanism and a base;

the motor is provided with a rotary output shaft;

the grinding tool is connected with the rotating output shaft;

the cutter carrying platform carries the cutter clamping mechanism;

the grinding tool moving platform bears the motor;

the grinding tool moving platform can move relative to the base so as to approach or depart from the tool clamping mechanism;

The grinding tool moving platform comprises a motor carrying part, a vibration reduction transmission belt part and a belt wheel part;

The motor carrying component is fixedly connected with the vibration reduction transmission belt component, so that the vibration reduction transmission belt component can drive the motor carrying component to move along a specified track relative to the base;

the belt wheel component is connected with the vibration reduction transmission belt component so as to drive the vibration reduction transmission belt component to move;

the cutter clamping mechanism comprises a middle shaft, a middle shaft bracket, a clamp, an angle adjusting part, an angle positioning part and a locking part;

the intermediate shaft bracket is connected with the intermediate shaft to support the intermediate shaft;

The angle adjusting component is connected with the intermediate shaft and can rotate relative to the base so as to change the included angle of the angle adjusting component relative to the base;

the angle adjusting component carries the clamp;

The locking part can lock the clamp relative to the base.

In some preferred embodiments, the angle adjustment member is shaft-hole fitted with the intermediate shaft.

In some preferred embodiments, the vibration absorbing belt member is a timing belt and the pulley member is a timing wheel.

In some preferred embodiments, the grinding tool moving platform further comprises a grinding tool guide rail and a grinding tool sliding block, wherein the grinding tool guide rail or the grinding tool sliding block is fixedly connected with the motor carrying component, and the grinding tool guide rail is matched with the grinding tool sliding block to limit the appointed track.

In some preferred embodiments, the grinding tool moving platform further comprises a lower carriage, and the grinding tool guide rail or the grinding tool sliding block is fixedly connected with the lower carriage.

In some preferred embodiments, the grinder track is a linear track, the grinder slide is a ball slide, and the linear track and the ball slide form a linear ball slide.

In some preferred embodiments, the tool clamping mechanism further comprises an angle positioning component, wherein the angle positioning component is connected with the angle adjusting component so as to change the included angle of the angle adjusting component relative to the base.

In some preferred embodiments, the angle positioning member is a fastener, and the fastener is positioned at one end of the angle adjusting member to change the angle of the angle adjusting member relative to the base by extending or shortening the angle.

In some preferred embodiments, the tool clamping mechanism further comprises a compensating feed platform movable relative to the base, and the clamp is located above the compensating feed platform.

In some preferred embodiments, the compensating feed platform is a dovetail skid.

In some preferred embodiments, the tool mounting platform is a platform capable of moving the tool clamping mechanism relative to the base, and the specific form of the tool mounting platform comprises a linear ball sliding rail platform and a dovetail sliding rail platform.

Compared with the prior art, the invention has the beneficial effects that:

The belt pulley component tightens the vibration reduction driving belt component, the vibration reduction driving belt component in a tightening state drives the motor carrying component to move along a specified track relative to the base, so that a motor and a grinding tool on the motor carrying component can approach to a tool and realize grinding and feeding, in the grinding and feeding process, vibration generated by the motor and the grinding tool is absorbed by the vibration reduction driving belt component in the tightening state, the intermediate shaft support supports the intermediate shaft, the angle adjusting component matched with the intermediate shaft in a shaft hole can rotate relative to the base, the included angle of the angle adjusting component relative to the base is changed, the included angle of a clamp borne on the angle adjusting component relative to the base is changed, then the included angle of a tool fixed on the clamp relative to the base is also changed, the positions of different angles on the tool can be contacted with the grinding tool, and then the clamp is locked by a locking part to avoid the clamp from displacing in the grinding process, so that the sharp grinding tool and the tool are generated with the tool when the grinding tool is mainly moved, the stability of the grinding tool can be ensured, the grinding tool is ensured, the quality of the grinding tool can be ensured, the grinding tool can be durable and the cutting performance is stable, the product quality can be ensured, the frequency of the grinding and the machine can be reduced, and the yield is improved.

Drawings

Fig. 1 is a schematic structural diagram of a knife grinder according to an embodiment of the present invention;

Fig. 2 is a schematic structural view of a knife grinder according to a modification of one embodiment of the present invention;

FIG. 3 is a schematic view of a tool clamping mechanism according to an embodiment of the present invention;

fig. 4 is a schematic view showing the structure of a motor-mounted part and a vibration reduction belt part according to an embodiment of the present invention;

FIG. 5 is a schematic diagram illustrating the structure of a clamp and a tool according to one embodiment of the present invention;

FIG. 6 is a schematic view of a clamp according to a variation of one embodiment of the present invention;

Fig. 7 is a schematic structural view of a jig according to another modification of the embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the embodiments of the present invention more clear, the present invention is further described in detail below with reference to fig. 1 to 7 and the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. In addition, the connection may be for a fixing function or for a circuit communication function.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing embodiments of the invention and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

The embodiment provides a knife grinder, in particular to a non-automatic knife grinder which is used for sharpening various cutting tools, such as turning tools, drills, milling cutters, reamers, gun drills and the like, and is particularly suitable for sharpening flat drills, semicircle drills, center drills and the like. In addition, the workpiece within the grinding range of the knife grinder of the present embodiment may also be ground.

Referring to fig. 1 to 3, the knife sharpener of the present embodiment includes a sharpener moving platform 1, a knife mounting platform 2, a motor 3, a sharpener 4, a knife clamping mechanism 5 and a base 6.

Referring to fig. 1 and 5, a motor 3 is used to drive a grinder 4 to grind a tool 100. The motor 3 has a rotation output shaft 31, and the grinder 4 is fixed to the rotation output shaft 31 of the motor 3, so that when the motor 3 rotates, the grinder 4 also rotates, thereby grinding the tool 100. In this embodiment, the grinding tool 4 is a grinding wheel, and of course, a safety cover may be provided on the periphery of the grinding wheel, for example, a semicircular safety cover may be provided above the grinding wheel. The grinding action refers to the left-right back-and-forth movement or unidirectional movement of the grinding tool 4 such as a grinding wheel.

Referring to fig. 1, the grinding tool moving platform 1is a platform capable of moving the grinding tool 4 relative to the base 6, specifically, moving along the Y axis relative to the base 6, so that the grinding tool moving platform 1 may also be referred to as a Y-axis sliding table or a Y-axis moving platform. The grinding tool moving platform 1 carries a motor 3. Since the grinder 4 is fixed to the rotation output shaft 31 of the motor 3, when the grinder moving platform 1 moves the motor 3, the grinder 4 is also moved so that the grinder 4 moves to a designated position to grind the tool 100.

The tool clamping mechanism 5 is used for clamping the tool 100, so that the position of the tool 100 is fixed to be polished. The tool mounting platform 2 carries a tool clamping mechanism 5.

The base 6 is used as a base of the whole knife grinder and bears various components, and comprises a grinding tool moving platform 1, a tool carrying platform 2, a motor 3, a grinding tool 4 and a tool clamping mechanism 5. The number of the bases 6 may be one or a plurality, and in the case of a plurality of bases 6, each base 6 is fixed on the ground.

The knife grinder of the embodiment adopts a grinding mode of grinding wheel movement (namely grinding tool 4 movement). When the cutter 100 is polished, the cutter 100 is fixed on the cutter clamping mechanism 5, the motor 3 is started to drive the grinding tool 4 to rotate, and on the premise that the grinding tool 4 rotates, the grinding tool moving platform 1 moves the grinding tool 4 along the Y axis relative to the base 6 to be close to the cutter 100, so that the cutter 100 is polished.

For the grinding mode of the grinding tool movement in the embodiment, the grinding tool 4 is active, the tool 100 is passive, so that the tool 100 is ground by the grinding tool 4, and the tool is just required to be ground, so that compared with the traditional grinding mode of the tool movement (the tool moves to be close to the grinding tool), the grinding mode of the grinding wheel movement in the embodiment has better grinding effect, clear and regular grinding surface textures and higher grinding efficiency.

Referring to fig. 1, the grinding tool moving platform 1 of the present embodiment specifically includes a motor mounting member 11 and a vibration reduction belt member 12. The motor mounting member 11 is an upper carriage. The vibration damping belt member 12 is a belt-like member having a vibration damping function, and is preferably a timing belt, and since the timing belt can realize precise and stable transmission, the timing belt is a flexible member. In other embodiments, the vibration dampening belt member 12 is a conveyor belt.

The motor mounting member 11 carries the motor 3, and specifically, the motor 3 is fixed to an upper carriage as the motor mounting member 11 by a fastener such as a screw (a position-adjustable handle screw or a common screw or the like).

Referring to fig. 4, the motor carrying member 11 is fixedly connected with the vibration-damping driving belt member 12, for example, the back surface of the motor carrying member 11 is fixedly connected with the vibration-damping driving belt member 12, and the vibration-damping driving belt member 12 drives the motor carrying member 11 to move when the vibration-damping driving belt member 12, that is, the synchronous belt, moves, specifically, the vibration-damping driving belt member 12 drives the motor carrying member 11 to move along a specified track relative to the base 6.

Referring to fig. 1, the grinding tool moving platform 1 of the present embodiment further includes a pulley component 13 and a grinding tool hand wheel 14, where the grinding tool hand wheel 14 is a Y-axis hand wheel, specifically, the pulley component 13 is a synchronous wheel, and in other embodiments, the pulley component 13 is a pulley. The grinding tool hand wheel 14 is connected with the belt wheel part 13 to drive the belt wheel part 13, the belt wheel part 13 is also connected with the vibration reduction transmission belt part 12, and the vibration reduction transmission belt part 12 is driven to move when the grinding tool hand wheel 14 is rotated to enable the belt wheel part 13 to move, so that the vibration reduction transmission belt part 12 is driven to move. Of course, in other embodiments, the grinding wheel 14 is optional, such as by moving the motor-carrying member 11 directly by a human hand to move the vibration reduction belt member 12.

The timing wheel as the pulley member 13 tightens the vibration-damping belt member 12 (i.e., timing belt), and referring to fig. 4, the vibration-damping belt member 12 is in a closed ring shape, and the two pulley members 13 are disposed at both inner ends of the vibration-damping belt member 12 to tighten the vibration-damping belt member 12 so that the vibration-damping belt member 12 takes a racetrack shape in appearance.

Referring to fig. 1 and 4, the grinder moving platform 1 further includes a grinder guide rail 15 and a grinder sliding block 16. The grinder rail 15 or the grinder slider 16 is fixedly connected to the motor mounting member 11, so long as sliding is achieved. The grinder guide rail 15 and the grinder sliding block 16 cooperate to define the aforementioned designated track, and in particular, the grinder guide rail 15 and the grinder sliding block 16 can slide relatively along the designated track.

Referring to fig. 1, the grinding tool moving platform 1 further comprises a lower carriage 17, and the back surface of the lower carriage 17 is fixedly connected with the base 6. The grinding tool guide rail 15 or the grinding tool sliding block 16 is fixedly connected with the lower carriage 17. The grinding tool guide rail 15 is a linear guide rail, the grinding tool slide block 16 is a ball slide block, and thus, the linear guide rail and the ball slide block form a linear ball slide rail, and then, the grinding tool moving platform 1 is a ball linear platform (i.e. a precise linear moving platform), and the specified track is a straight line. The use of the ball linear platform is beneficial to accurately moving the grinding tool 4, can reduce the gravity center of the motor 3 to the greatest extent, and is beneficial to keeping the motor 3 stable in the grinding process.

Referring to fig. 1, in the present embodiment, the grinder slides 16 are fixed on the front surface of the lower carriage 17, referring to fig. 5, the grinder rail 15 is fixed on the back surface of the motor mounting member 11, and the front surface of the lower carriage 17 is disposed opposite to the back surface of the motor mounting member 11, so that the grinder rail 15 and the grinder slides 16 are located between the motor mounting member 11 (also referred to as an upper carriage) and the lower carriage 17, specifically, two grinder slides 16 are used as one group, and two grinder slides 16 are arranged in parallel, for example, two grinder slides 16 are arranged in front of the lower carriage 17, and one grinder slide 16 corresponds to one grinder rail 15.

The grinding tool moving platform 1 further comprises an adjusting pad. When the positional relationship between the tool 100 and the grinder 4 (grinding wheel) in the Z-axis direction is unfavorable for grinding, an adjusting pad may be added or subtracted to the bottom of the grinder moving platform 1 or the bottom of the motor 3 to adjust the positional relationship between the tool 100 and the grinder 4 in the Z-axis direction so as to facilitate grinding. Of course, an angle adjustment base that can adjust the angle of the motor 3 about the Z-axis direction may be provided, for example, the angle adjustment base may be provided at the bottom of the motor 3. Wherein, X-axis, Y-axis and Z-axis are mutually perpendicular three-dimensional space coordinate axes.

Referring to fig. 1 and 3, a tool clamping mechanism 5 is used to hold the tool 100 at a desired angle and position. The tool clamping mechanism 5 includes a counter shaft 51, a counter shaft bracket 52, a clamp 53, an angle adjusting member 54, an angle positioning member 55, a locking portion 56, and a compensation feed platform 57 movable relative to the base 6.

Referring to fig. 3, an intermediate shaft bracket 52 is connected to the intermediate shaft 51, and supports the intermediate shaft 51 by lifting the intermediate shaft 51. For example, the number of the intermediate shaft brackets 52 is two, the intermediate shaft brackets 52 are provided with shaft holes, and two ends of the intermediate shaft 51 are respectively positioned in the shaft holes of the two intermediate shaft brackets 52, so that fixation is realized.

Referring to fig. 3, the angle adjusting member 54 is coupled to the intermediate shaft 51, for example, by shaft-hole fitting, so that the angle of the angle adjusting member 54 with respect to the base 6 can be changed. Illustratively, the angle adjusting member 54 is an angle adjusting plate, and the angle adjusting member 54 is provided with a semicircular hole (may also be referred to as a groove), and the intermediate shaft 51 is inserted into the semicircular hole of the angle adjusting member 54 and fixed, such as welded together. The number of the angle adjusting members 54 is two, and the angle adjusting members are arranged side by side in the axial direction of the intermediate shaft 51. When the angle adjusting member 54 carries the clamp 53 and the angle of the angle adjusting member 54 with respect to the base 6 changes, specifically, the intermediate shaft 51 and the angle adjusting member 54 rotate as a unit with respect to the intermediate shaft bracket 52, the angle of the clamp 53 with respect to the base 6 also changes. In other embodiments, intermediate shaft 51 is rotatably coupled to a semi-circular aperture of angle adjustment member 54, and angle adjustment is achieved by rotation of angle adjustment member 54 relative to intermediate shaft 51.

Referring to fig. 3, the angle positioning member 55 is connected with the angle adjusting member 54 to change the angle of the angle adjusting member 54 with respect to the base 6. The angle positioning member 55 is a fastener such as a screw with an inner hexagon, one end of the angle adjusting member 54, that is, the angle adjusting plate, is provided with a corresponding threaded through hole, the angle positioning member 55 is screwed in or withdrawn from the threaded through hole to realize extension or shortening, one end of the angle adjusting member 54 is supported by the angle positioning member 55, and the length of the angle positioning member 55 protruding from the angle adjusting member 54 determines the included angle of the angle adjusting member 54 relative to the base 6.

Referring to fig. 3, both ends of the angle adjusting member 54 are supported by providing the hexagon socket screws as the angle positioning members 55 at both ends of the angle adjusting member 54, and the intermediate shaft 51 is used as a fulcrum, so that both ends of the angle adjusting member 54 cannot be turned over, thereby locking the angle adjusting member 54.

The locking part 56 locks the clamp 53 relative to the base 6, so that the clamp 53 will not undergo displacement change even if being stressed during polishing. The locking portion 56 presses the clamp 53 against the angle adjusting member 54, and thus the angle positioning member 55 on the angle adjusting member 54 is pressed to fixedly support the angle adjusting member 54 on the base 6, so that the clamp 53 can be locked. Further, referring to fig. 3, a positioning portion 541 is provided in the middle of the angle adjusting member 54, the positioning portion 541 is specifically a T-shaped groove, the locking portion 56 includes a lower portion 561 and a locking head 562, the lower portion 561 is a structure capable of being matched with the positioning portion 541, for example, the lower portion 561 is a square round nut capable of being placed in the T-shaped groove (positioning portion 541), the clamp 53 is threaded into the lower portion 561 and placed on the angle adjusting member 54, the locking head 562 is pressed on the angle adjusting member 54, the angle adjusting member 54 is pressed to transmit pressure to the angle positioning member 55, and then the angle positioning member 55 is pressed on the surface of the compensating feeding platform 57, that is, the clamp 53, the angle adjusting member 54, the angle positioning member 55 and the locking portion 56 are all located on the compensating feeding platform 57.

It should be noted that in other embodiments, the angle positioning member 55 is optional, and the angle adjusting member 54 is locked relative to the base 6 directly by the locking portion 56 after the angle adjusting member 54 is located at the designated position, so that the angle between the angle adjusting member 54 and the base 6 is fixed.

Referring to fig. 3,5, 6 and 7, the clamp 53 is penetrated in the lower portion 561 of the locking portion 56 to be rotatable about the lower portion 561 (which may be considered as being rotatable about the Z-axis), so that the angular adjustment of the tool 100 in the other direction can be achieved, and the tool 100 is locked by the lock 562 after the angular adjustment in the direction is completed. The angle adjustment of the angle adjustment member 54 and the angle adjustment of the clamp 53 about the locking portion 56 can satisfy the angle adjustment of most tools for grinding. Of course, an angle adjustment in the third direction, such as an angle adjustment around the X-axis, may also be provided, and the X-axis fixture may be correspondingly increased according to the characteristics of the tool.

Referring to fig. 5, 6 and 7, the clamp 53 on the tool clamping mechanism 5 of the present embodiment is replaceable, and clamping of various tools can be achieved.

Referring to fig. 1, the clamp 53 is positioned above the compensating feed stage 57 such that the compensating feed stage 57 moves the tool 100 on the clamp 53 relative to the base 6, such as in the Y-axis, the tool 100 on the clamp 53 relative to the base 6. The compensation feeding platform 57 is used for assisting grinding, namely, the grinding tool 4 only rotates and does not move, and the micro-feeding direct grinding is carried out in the Y-axis direction through the compensation feeding platform 57 after the cutter 100 on the clamp 53 contacts the grinding tool 4. In this embodiment, the compensating feed platform 57 is a dovetail slide. The dovetail sliding table is made of cast iron, has larger self weight and high shock absorption, has strong bearing capacity, and can effectively reduce the vibration during grinding and eliminate uncertain factors. In addition, the dovetail slide serves as a compensating feed platform 57 to ensure that other spatial positions and angles of the tool 100 remain unchanged.

In this embodiment, the tool mounting platform 2 is a platform capable of moving the tool clamping mechanism 5 relative to the base 6, specifically, a platform capable of moving the tool clamping mechanism 5 relative to the base 6 on the X axis, so as to implement compensation feeding or auxiliary grinding. Referring to fig. 1 and 2, a specific form of the tool-carrying platform 2 includes a linear ball slide platform and a dovetail slide platform. The linear ball sliding rail platform can realize precise linear movement. The linear ball sliding rail is inversely installed, so that dust can be effectively prevented from entering the precise component, the dust guard is convenient to install, the distance from the working table surface of the tool carrying platform 2 to the contact surface of the sliding block and the guide rail is shorter, and the rigidity can be increased.

Referring to fig. 1, the tool mounting platform 2 includes a tool mounting upper plate 21, a tool mounting lower plate 22, an elastic member 23, a hand screw 24, and a screw nut 25, wherein the hand screw 24 is an X-axis screw. The tool clamping mechanism 5 is fixed to the surface of the tool mounting upper plate 21. The tool mounting upper plate 21 and the tool mounting lower plate 22 can move relatively, for example, the tool mounting lower plate 22 is fixed on the base 6, a screw nut 25 is arranged on the tool mounting lower plate 22, the hand screw 24 penetrates through the screw nut 25 and is rotatably arranged on the tool mounting upper plate 21 (for example, the hand screw 24 penetrates through a bearing arranged on the tool mounting upper plate 21), the hand screw 24 moves relative to the screw nut 25 along the length direction of the hand screw 24 when the hand screw 24 is rocked, for example, the hand screw 24 is rocked, the tool mounting upper plate 21 can move relative to the tool mounting lower plate 22 along the direction defined by the hand screw 24, for example, an X axis, wherein the length of the hand screw 24 is as long as that the front end of the hand screw 24 can reach the end face of the tool mounting lower plate 22, so that the tool mounting lower plate 22 stops the tool mounting upper plate 21 from advancing, the tool platform 2 can realize positioning, can conveniently grind a tool with multiple symmetrical sides (for example, symmetrical flat cutters) such as a drill or the like.

In other embodiments, the tool-carrying lower plate 22 is fixed to the base 6, the screw nut 25 is mounted on the tool-carrying upper plate 21, the hand screw 24 passes through the screw nut 25 and is rotatably mounted on the tool-carrying lower plate 22, and the tool-carrying upper plate 21 can be moved relative to the tool-carrying lower plate 22 in a direction defined by the hand screw 24 by shaking the hand screw 24.

Referring to fig. 1, the elastic member 23 of the tool-carrying platform 2 is specifically a spring. The elastic member 23 has one end fixed to the tool-mounted upper plate 21 and the other end fixed to the tool-mounted lower plate 22, and thus, by the tension of the elastic member 23, the stroke gap between the tool-mounted upper plate 21 and the tool-mounted lower plate 22, such as the ball gap of a linear ball slide table or the screw gap between the hand screw 24 and the screw nut 25, can be eliminated, and the clearance elimination treatment is realized, so that the tool-mounted upper plate 21 is free from clearance in both the forward and backward directions, particularly in the forward direction.

Referring to fig. 1, the tool mounting platform 2 further includes a travel indication plate 26 and a blocking positioning member 27. The travel indicator plate 26 is fixedly connected with the cutter mounting upper plate 21, and the hand screw 24 passes through the travel indicator plate 26 and can rotate relative to the travel indicator plate 26. The stroke indicator plate 26 is provided with a scale which represents the number of turns of the hand screw 24 and indicates the stroke of the cutter-carrying upper plate 21. Of course, laser marking may be performed on the location where the scale is to be set.

The blocking positioning member 27 is embodied as a screw. The blocking and positioning member 27 is connected to the tool-carrying upper plate 21, for example by way of a travel indicator plate 26, in particular in a threaded hole penetrating the travel indicator plate 26, and the length of the blocking and positioning member 27 is adjustable relative to the tool-carrying upper plate 21, for example by way of extension or retraction. When the upper cutter-carrying plate 21 moves forward along the X axis, the blocking positioning member 27 moves forward along with the upper cutter-carrying plate 21, and the front end of the blocking positioning member 27 is blocked by the front end surface of the lower cutter-carrying plate 22 to realize positioning, so that the upper cutter-carrying plate 21 cannot move forward continuously, the whole upper cutter-carrying platform 2 is fixed, and if the positioning and the fixing are to be released, only the hand screw 24 is required to swing reversely.

Further, the blocking positioning member 27 may also set the grinding amount. Specifically, after the cutter 100 is fixed, each platform is moved to make the cutter rest on the surface of the grinding wheel, at this time, the grinding wheel is stationary, the extending length of the blocking positioning member 27 is adjusted so that the front end of the blocking positioning member 27 just contacts the front end surface of the cutter-carrying lower plate 22, the blocking positioning member 27 is retracted by a specified amount, such as 1mm, so that a specified amount, such as a grinding amount of 1mm, is set, then the cutter is started and sharpened, the cutter-carrying upper plate 21 is fed forward until the front end of the blocking positioning member 27 again contacts the front end surface of the cutter-carrying lower plate 22, the cutter is cut according to the set grinding amount, and the cutter is no longer ground by the sharpener. Thus, the practicability of the product can be improved with lower product cost.

The knife grinder of this embodiment adopts a grinding mode in which the grinding tool 4 (such as a grinding wheel) is mainly moved. The tool 100 is stationary or only fed for compensation or for auxiliary grinding in the X-axis direction.

The operation of the knife sharpener of this embodiment will be described below with reference to fig. 1 to 3. The tool 100 to be sharpened is clamped according to a required angle, if the stroke is required to be set, the stroke can be set, then the motor 3 is started according to the required rotation direction of the grinding wheel, wherein the motor 3 can rotate forwards and backwards, the X-axis hand wheel screw rod (namely the hand screw rod 24) is driven to enable the tool 100 to slowly lean against the grinding wheel (namely the grinding tool 4), after the tool 100 contacts the grinding wheel, the Y-axis hand wheel (namely the grinding tool hand wheel 14) is manually rotated on the premise that the grinding wheel rotates, the hand wheel drives the synchronous wheel (namely the belt wheel part 13), the synchronous wheel drives the motor carrying part 11 through the transmission of the synchronous belt (namely the vibration reduction transmission belt part 12), the motor carrying part 11 carries the motor 3 and the grinding wheel to do grinding action, the X-axis hand wheel screw rod (namely the hand screw rod 24) is manually rotated along with the hand wheel to drive the tool carrying upper plate 21 (namely the X-axis sliding table upper carriage), the tool carrying upper plate 21 carries the tool clamping mechanism 5 and the tool 100 to do compensation feeding or assist operation, and the Y-axis and X-axis matching operation is achieved. And after grinding the cutter, driving the screw rod of the X-axis hand wheel or the Y-axis hand wheel to separate the cutter from the grinding wheel, and then shutting down. The compensating feeding means that the cutter moves forward slightly to compensate the worn part.

As can be seen from the above, the pulley member 13 tightens the vibration-damping belt member 12, and the vibration-damping belt member 12 in a tightened state drives the motor-carrying member 11 to move along a specified trajectory with respect to the base 6, so that the motor 3 and the grinder 4 on the motor-carrying member 11 can approach the cutter 100 and perform grinding and feeding, wherein the motor 3 and the grinder 4 move along the specified trajectory, such as move along a straight line, with inertia during the grinding and feeding; in the process of polishing and feeding, vibration generated by the motor 3 and the grinding tool 4 is absorbed by the vibration reduction transmission belt component 12 in a tensioned state, the intermediate shaft bracket 52 supports the intermediate shaft 51, the angle adjusting component 54 matched with the shaft hole of the intermediate shaft 51 can rotate relative to the base 6, the included angle of the angle adjusting component 54 relative to the base 6 is changed, so that the included angle of the clamp 53 borne on the angle adjusting component 54 relative to the base 6 is changed, the included angle of the tool 100 fixed on the clamp 53 relative to the base 6 is also changed, parts with different angles on the tool 100 can be contacted with the grinding tool 4, and the clamp 53 is locked on the angle adjusting component 54 by the locking part 56, for example, so that the clamp 53 is prevented from displacing in the polishing process, and the vibration generated between the tool 4 and the tool 100 when the tool 100 is polished by the knife grinder mainly moving by the grinding tool 4 (grinding wheel) can be avoided to the maximum extent, the sharpness and the stable cutting performance of the tool 100 can be ensured, the quality of products can be ensured, the frequency of sharpening and debugging can be reduced, and the yield can be improved. Wherein, the frequency of sharpening is reduced, which can prolong the service life of the cutter and reduce the cost of the cutter.

The grinding tool moving platform 1 of the knife grinder of the embodiment uses the vibration reduction transmission belt component 12 and the linear ball sliding rail, the tool carrying platform 2 is a linear ball sliding rail platform, and the clamping height of the tool 100 and the clamping height of the grinding tool 4 can be reduced as much as possible by matching with the tool clamping mechanism 5, the lower the clamping height is, the lower the contact point position between the tool 100 and the grinding tool 4 is, the smaller the working face stress of the grinding tool moving platform 1 and the working face stress of the tool carrying platform 2 are when the grinding tool is in grinding work, the motor 3 and the grinding tool 4 are arranged on the precise moving platform (namely the grinding tool moving platform 1), and the vibration reduction transmission belt component 12 (namely the synchronous belt) is used for traction movement, so that the motion is very stable, and vibration and unstable factors can be reduced. In addition, the main control operation of the knife grinder of the embodiment is to shake the hand screw 24 and the grinding tool hand wheel 14, so that the operation is convenient and concise.

The knife sharpener of the embodiment can grind cutters with diameters below 1 millimeter, such as drills, and has good grinding effect.

Compared with the manual sharpening, the sharpening effect of the sharpener of the embodiment is particularly good, the sharpened cutter is sharp and durable, the geometric shape is standard, the current situation that the mechanical sharpening effect is not as good as the manual sharpening effect can be changed, and the sharpening effect of the sharpener is far beyond the manual sharpening.

The knife grinder can eliminate unstable factors such as vibration, so that the knife grinder is stable in knife grinding effect, the pressure of workers in the hardware cutting processing industry can be greatly reduced, and a good cutter can be easily ground. The knife sharpener of the embodiment has good effect, is simple and convenient to operate, and can lead a machining master to give up manual sharpening and adopts the knife sharpener of the embodiment to sharpen.

The current sharpening equipment in the industries of automatic lathes, common lathes, numerical control lathes and the like is crude (manual sharpening machine) or no special sharpening machine is adopted, and manual sharpening is mainly adopted. The knife grinder of the embodiment is mainly aimed at machining equipment such as an automatic lathe, an ordinary lathe and a numerical control lathe, and can fill the blank of the industry.

The automatic knife sharpening equipment is suitable for mass production of standard cutters, such as drills and milling cutters, the use object is a cutter manufacturer, the equipment is high in price, programming and machine adjustment are needed during knife sharpening, and professional personnel are needed to operate. In contrast, the knife grinder of the embodiment is suitable for grinding various cutters and polishing the cutters, such as temporary grinding or polishing after nonstandard cutter abrasion on a production site of a hardware processing enterprise, the use object is a machining enterprise, the equipment cost is low, the operation is simple, the grinding is carried out along with the equipment cost, programming and machine adjustment are not needed, and common machining personnel can use the knife grinder.

The foregoing is a further detailed description of the invention in connection with specific/preferred embodiments, and it is not intended that the invention be limited to such description. It will be apparent to those skilled in the art that several alternatives or modifications can be made to the described embodiments without departing from the spirit of the invention, and these alternatives or modifications should be considered to be within the scope of the invention.

Claims

1. A knife sharpening machine, characterized in that it comprises a grinding wheel moving platform, a knife mounting platform, a motor, a grinding wheel, a knife clamping mechanism, and a base;

The motor has a rotating output shaft;

The grinding wheel is connected to the rotating output shaft;

The tool mounting platform supports the tool clamping mechanism;

The mold moving platform carries the motor;

The grinding wheel moving platform can move relative to the base to approach or move away from the tool clamping mechanism;

The grinding wheel moving platform includes a motor mounting component, a vibration damping transmission belt component, and a pulley component;

The motor mounting component carries the motor; the motor mounting component is fixedly connected to the vibration damping transmission belt component, thereby enabling the vibration damping transmission belt component to drive the motor mounting component to move relative to the base along a specified trajectory;

The pulley assembly tensions the vibration damping drive belt assembly; the pulley assembly is connected to the vibration damping drive belt assembly to drive the vibration damping drive belt assembly to move;

The tool clamping mechanism includes an intermediate shaft, an intermediate shaft support, a clamp, an angle adjustment component, an angle positioning component, and a locking component;

The intermediate shaft bracket is connected to the intermediate shaft to support the intermediate shaft;

The angle adjustment component is connected to the intermediate shaft, and the angle adjustment component can rotate relative to the base to change the included angle between the angle adjustment component and the base.

The angle adjustment component carries the clamp;

The locking part can lock the clamp relative to the base;

The vibration damping transmission belt component is a synchronous belt, and the pulley component is a synchronous pulley. The pulley component tensions the vibration damping transmission belt component, and the tensioned vibration damping transmission belt component drives the motor mounting component to move relative to the base along a specified trajectory. This allows the motor and grinding wheel on the motor mounting component to approach the cutting tool and achieve grinding and feeding. During grinding and feeding, the motor and grinding wheel have inertia as they move along the specified trajectory. During grinding and feeding, the vibration generated by the motor and grinding wheel is absorbed by the tensioned vibration damping transmission belt component. The intermediate shaft bracket supports the intermediate shaft, and the angle adjustment component that mates with the intermediate shaft can rotate relative to the base. Changing the angle between the angle adjustment component and the base changes the angle between the clamp mounted on the angle adjustment component and the base. The angle between the cutting tool fixed on the clamp and the base also changes, allowing different angled parts of the cutting tool to contact the grinding wheel. The locking part then locks the clamp relative to the base onto the angle adjustment component, preventing displacement of the clamp during grinding.

The grinding wheel moving platform further includes a grinding wheel guide rail and a grinding wheel slider; the grinding wheel guide rail is a linear guide rail; the grinding wheel slider is a ball bearing slider; the linear guide rail and the ball bearing slider form a linear ball bearing slide rail; the tool clamping mechanism further includes a compensating feed platform that can move relative to the base, the clamp is located on the compensating feed platform, and the compensating feed platform is a dovetail slide; the angle adjustment component is engaged with the intermediate shaft through a shaft hole; the specific form of the tool mounting platform includes a linear ball bearing slide rail platform and a dovetail slide rail platform, which enables the tool clamping mechanism to move relative to the base.

2. The grinding machine according to claim 1, characterized in that: the grinding wheel guide rail or the grinding wheel slider is fixedly connected to the motor mounting component; the grinding wheel guide rail and the grinding wheel slider cooperate to define the specified trajectory.

3. The grinding machine according to claim 2, wherein the grinding wheel moving platform further includes a lower slide plate; the grinding wheel guide rail or the grinding wheel slider is fixedly connected to the lower slide plate.

4. The sharpening machine according to claim 1, wherein the tool clamping mechanism further includes an angle positioning component; the angle positioning component is connected to the angle adjusting component to change the angle between the angle adjusting component and the base.

5. The sharpening machine according to claim 4, wherein the angle positioning component is a fastener; the fastener is located at one end of the angle adjusting component and changes the angle between the angle adjusting component and the base by extending or shortening.