CN211992280U

CN211992280U - Grinding machine

Info

Publication number: CN211992280U
Application number: CN201922477770.6U
Authority: CN
Inventors: 龙晓斌; 胡海峰; 龙川
Original assignee: Oms Machinery Co Ltd
Current assignee: Oms Machinery Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-11-24
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a grinding machine, including the board, locate the grinding device on the board and be used for the clamping device of centre gripping work piece, clamping device is located grinding device's the place ahead, grinding device includes the support, installs abrasive band tensioning assembly on the support to and the abrasive band, the abrasive band by abrasive band tensioning assembly tensioning still includes a plurality of gyro wheel, a plurality of installing on the support the gyro wheel is located the back side on the abrasive band the surface of gyro wheel is equipped with first arch along the circumference of gyro wheel, and the gyro wheel can support on the back on the abrasive band, thereby makes the local ridge arch that forms the grindable work piece by the back side to the positive side sunken in the front side on the abrasive band of abrasive band. Therefore, the utility model has the advantages of can carry out the grinding to the curved surface and the edge of dysmorphism curved surface, efficiency is higher, the effect of polishing is better.

Description

Grinding machine

Technical Field

The utility model relates to a grinding equipment field especially relates to a milling machine for grinding handle of a knife.

Background

Grinding is a cutting process in which a surface of a workpiece is processed by a grinding tool such as a grinding wheel rotating at high speed. The grinding is used for processing the internal and external cylindrical surfaces, conical surfaces and planes of various workpieces, and special and complex special-shaped curved surface workpieces such as threads, gears, splines and the like. The special-shaped curved surface workpiece has the defects that the surface to be ground is a curved surface or a corner due to the surface irregularity, the curved surface has radian, the space of the corner is narrow, and the grinding part of a common grinding device is horizontally arranged, so that only a plane can be ground, and the special-shaped curved surface workpiece is difficult to grind.

Chinese patent document CN 107553276a discloses a grinding device for a special-shaped curved surface, which comprises a machine table, a suction mechanism, a grinding mechanism and a transmission mechanism, wherein the transmission mechanism comprises a motor, a driving wheel and a tensioning unit, the motor is fixedly mounted on the machine table, the driving wheel is fixedly connected with a power output end of the motor, the tensioning unit comprises a length-adjustable adjusting rod and a tensioning wheel, the adjusting rod is horizontally mounted on the machine table, one end of the adjusting rod is fixedly connected with the machine table, and the other end of the adjusting rod is rotatably connected with the tensioning wheel; the grinding mechanism comprises an abrasive belt, a supporting rod and a contact grinding wheel, the supporting rod is horizontally arranged on the machine table, one end of the supporting rod is fixedly connected with the machine table, the other end of the supporting rod is detachably connected with the contact grinding wheel, and the driving wheel, the tensioning wheel and the contact grinding wheel are vertically arranged on the same horizontal plane; the abrasive belt is in contact with the driving wheel, the driving wheel and the side wall in contact with the grinding wheel; the suction mechanism comprises a negative pressure suction machine, a first suction pipe and a second suction pipe, the first suction pipe and the second suction pipe are communicated with the negative pressure suction machine, one end, far away from the negative pressure suction machine, of the first suction pipe is opposite to the driving wheel, and one end, far away from the negative pressure suction machine, of the second suction pipe is opposite to the contact grinding wheel.

This kind of dysmorphism curved surface grinding device among the above-mentioned prior art can carry out abrasive machining to some large tracts of land curved surface to a certain extent, however, still have the defect at the in-process of in-service use, if to the edge of dysmorphism curved surface part, above-mentioned prior art then can't process smoothly, the use has the limitation, usually to the edge, all convert into artifical manual polishing, not only the effect of polishing is uneven, there is great difference, and work load is big and inefficiency moreover, be difficult to satisfy mass production.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can carry out the curved surface and the edge of dysmorphism curved surface grinding, efficiency is higher, the better grinder of effect of polishing.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the grinding machine comprises a machine table, a grinding device arranged on the machine table, a clamping device used for clamping a workpiece, a plurality of rollers arranged on the support, a plurality of first bulges arranged on the surfaces of the rollers along the circumferential direction of the rollers, and a grinding belt, wherein the clamping device is positioned in front of the grinding device, the grinding device comprises a support, a grinding belt tensioning assembly arranged on the support, the grinding belt is tensioned by the grinding belt tensioning assembly, the rollers are arranged on the back surface of the grinding belt, the rollers can abut against the back surface of the grinding belt, and the local part of the grinding belt is sunken from the back surface side to the front surface side so as to form ridge-shaped bulges capable of grinding the workpiece on the front surface side of the grinding belt.

As an improvement of the present invention, the roller surface is curved surface transition at the intermediate position along the axial direction to both ends of the roller.

As the improvement of the utility model, still include first power supply and gyro wheel mounting bracket, a plurality of the gyro wheel is rotatable to be installed on the gyro wheel mounting bracket, the gyro wheel mounting bracket is fixed on the support, first power supply can drive the gyro wheel mounting bracket removes to make the gyro wheel support and lean on or keep away from the abrasive band.

As an improvement of the utility model, the gyro wheel mounting bracket includes base and a plurality of gyro wheel mount pad, the gyro wheel with the installation of gyro wheel mount pad one-to-one, the gyro wheel mount pad is installed on the base, just the gyro wheel mount pad can for the base slides.

As the improvement of the utility model, be equipped with fourth guide rail or fourth slider, every on the base be equipped with on the gyro wheel mount pad with fourth guide rail or fourth slider complex fourth slider or fourth guide rail, thereby realize the slip of gyro wheel mount pad on the base through the cooperation of fourth guide rail and fourth slider.

As an improvement of the utility model, abrasive band tensioning assembly includes the action wheel and follows the driving wheel, the action wheel is installed from the driving wheel on the support, the abrasive band cover is established the action wheel with follow driving wheel on and by the action wheel with follow the driving wheel tensioning.

As the utility model discloses an improve, still including installing second power supply on the support, the second power supply is connected with the action wheel and drives the action wheel rotation to drive the abrasive band and rotate from the driving wheel.

As an improvement of the utility model, still include rotating assembly, rotating assembly includes first rotary platform and third power supply, first rotary platform installs the back of support, the third power supply is installed first rotary platform's side is by the first rotary platform rotating of third power supply drive to the drive support and the abrasive band on it is rotatory.

As the utility model discloses an improvement still includes automatic tensioning subassembly, automatic tensioning subassembly includes pull rod, compression elastic component, locating part, and the guide slot of seting up on the support, from the installation axle of driving wheel can reciprocate in this guide slot, the one end of pull rod along the guide slot upwards with from the hub connection of driving wheel, the other end passes locating part and compression elastic component along the guide slot downwards in proper order, the locating part supports in the guide slot bottom, when compression elastic component opens, the pull rod can pull from the driven wheel installation axle down and move.

As an improvement of the utility model, still include grudging post, lifter plate, first slider to and the first guide rail that matches with first slider, first guide rail is installed on the grudging post, first slider setting just can on the lifter plate slide on the first guide rail, one side of lifter plate still with first rotary platform connects, the lifter plate can slide along the Z axle direction relative the platform on first guide rail.

As an improvement of the utility model, clamping device includes cutter place the platform, clamping component, second rotary platform, mounting bracket and fourth power supply, cutter place the platform be used for placing the cutter of treating polishing, clamping component install in one side on the cutter place the platform to can be used to press from both sides tightly or loosen the cutter on the cutter place the platform, cutter place the platform install on second rotary platform, and by second rotary platform drives rotatoryly, second rotary platform installs on the mounting bracket, the fourth power supply is located in the mounting bracket, second rotary platform is driven by the fourth power supply.

As an improvement of the utility model, the clamping component is a rotary cylinder or a manual cutter fixing clamp.

As an improvement of the utility model, the clamping device can move along the Y-axis direction relative to the machine table.

The utility model discloses owing to still including installing a plurality of gyro wheel, a plurality of on the support the gyro wheel is located the back side of abrasive band the surface of gyro wheel is equipped with first arch along the circumference of gyro wheel, and the gyro wheel can support on the back of abrasive band, makes the abrasive band part by the back side to the positive side sunken thus form the ridge-shaped protrusion that can grind the work piece in the front side of abrasive band, the utility model discloses when using, mainly the first arch of gyro wheel supports on the back of abrasive band, moves along with the gyro wheel to the abrasive band and pastes tightly, makes the abrasive band part form the ridge-shaped protrusion that can grind the work piece in the front side by the back side to the positive side sunken, consequently, the utility model provides a ridge-shaped protrusion that the abrasive band formed not only can be used for the grinding of curved surface, can also be used for the grinding of edge department, the utility model discloses an application scope is wider to efficiency; therefore, the utility model has the advantages of can carry out the grinding to the curved surface and the edge of dysmorphism curved surface, efficiency is higher, the effect of polishing is better.

Drawings

Fig. 1 is a schematic overall structure diagram of a first embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of the abrasive belt of FIG. 1 before the rollers abut;

figure 4 shows a schematic view of the abrasive belt of figure 1 with rollers against it;

FIG. 5 is a top view of FIG. 3;

FIG. 6 is an enlarged schematic view of the structure at A in FIG. 5;

FIG. 7 is a top view of FIG. 4;

FIG. 8 is a schematic partial structural view of FIG. 1 (before the belt with rollers abutting);

figure 9 is a schematic view of the sanding belt of figure 8 with the rollers abutting;

FIG. 10 is a schematic view of a portion of the grinding apparatus of FIG. 1;

FIG. 11 is a partially disassembled schematic view of the grinding apparatus of FIG. 1;

FIG. 12 is an exploded view of the clamping device of FIG. 1;

FIG. 13 is a top view of the combination of FIG. 12;

FIG. 14 is a partially disassembled schematic view of the clamping device of FIG. 1;

fig. 15 is a schematic plan view of a second embodiment of the grinding device of the present invention;

FIG. 16 is a top view of the roller mount and roller of FIG. 15;

FIG. 17 is a side view of FIG. 16;

fig. 18 is a front view of fig. 16.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

referring to fig. 1 to 14, fig. 1 to 14 disclose a first embodiment of a grinding machine, which includes a machine table 1, a grinding device 2 disposed on the machine table 1, and a clamping device 3 for clamping a workpiece, where the clamping device 3 is located in front of the grinding device 2, in this embodiment, the workpiece is a tool, the grinding device 2 is used for grinding a tool shank 92, and the clamping device 3 clamps the tool, so that the grinding device 2 grinds the tool; in this embodiment, specifically, the grinding device 2 includes a bracket 230, a belt tensioning assembly mounted on the bracket 230, and a belt 211, where the belt 211 is tensioned by the belt tensioning assembly, specifically, the belt tensioning assembly includes a driving wheel 232 and a driven wheel 233, the driving wheel 232 and the driven wheel 233 are mounted on the bracket 230, and the belt 211 is sleeved on the driving wheel 232 and the driven wheel 233 and is tensioned by the driving wheel 232 and the driven wheel 233; in this embodiment, specifically, the abrasive belt further includes a plurality of rollers 221 mounted on the bracket 230, where the number of the rollers 221 in this embodiment is 3, the plurality of rollers 221 are located on the back surface 212 side of the abrasive belt 211, a first protrusion 224 is provided on the surface of the roller 221 along the circumferential direction of the roller 221, and the roller 221 can abut against the back surface 212 of the abrasive belt 211, so that the abrasive belt 211 is partially recessed from the back surface 212 side to the front surface 213 side to form a ridge-shaped protrusion 214 capable of grinding a workpiece on the front surface 213 side of the abrasive belt 211. In order to enable abrasive belt 211 to rotate and achieve automatic grinding of a workpiece, a second power source 234 is mounted on bracket 230, and second power source 234 is connected with drive wheel 232 and drives drive wheel 232 to rotate, so as to drive abrasive belt 211 and driven wheel 233 to move, and abrasive belt 211 can be tensioned and moved between drive wheel 232 and driven wheel 233, and when roller 221 abuts against abrasive belt 211, abrasive belt 211 moves, and roller 221 in contact with abrasive belt 211 rolls along with abrasive belt.

The utility model discloses in, it is further, gyro wheel 221 surface is the curved surface transition to the both ends 225 of gyro wheel along the axial at intermediate position 226, and the aim at that so sets up, this design can be so that the highest point of the protruding 214 of this ridge is the curved surface, is favorable to polishing the narrower and small corner in space like this, also is difficult for damaging abrasive band 211 simultaneously. In the grinding process of the present invention, the abrasive belt 211 is tensioned, the roller 221 is close to the abrasive belt 211 and the roller 221 abuts against the back 212 of the abrasive belt 211, so that the abrasive belt 211 is partially recessed from the back 212 to the front 213 to form the ridge-shaped protrusion 214 (as shown in fig. 4 and 7) capable of grinding the workpiece at the front 213, in the present invention, the first protrusion 224 is disposed on the surface of the roller 221 along the circumferential direction of the roller 221, and due to the special structure of the roller 221, when the roller 221 abuts against the back 212 of the abrasive belt 211, mainly the first protrusion 224 of the roller 221 abuts against the back 212 of the abrasive belt 211, the local portion of the abrasive belt 211 is recessed from the back 212 to the front 213 to form the ridge-shaped protrusion 214 capable of grinding the workpiece at the front 213, the ridge-shaped protrusion 214 is in the shape of a long and thin strip, therefore, the formed ridge-shaped protrusion 214 can not only grind a curved surface, but also can be used to the grinding of the narrower part in spaces such as edge, use more nimble, consequently, the utility model provides an abrasive band 211 not only can be used for the grinding of curved surface, can also be used for the grinding of the comparatively narrow and small edge in space, for prior art, the utility model discloses an application scope is wider.

In the present invention, further, the present invention further comprises a first power source 223 and a roller mounting bracket 222, 3 of the rollers 221 in this embodiment (of course, the number of the rollers 221 can be installed according to the grinding requirement) are rotatably installed on the roller mounting bracket 222, the roller mounting bracket 222 is fixed on the bracket 230, the first power source 223 can drive the roller mounting bracket 222 to move, so that the roller 221 moves against or away from the abrasive belt 211, when the roller 221 is needed, the first power source 223 is driven to drive the roller 221 to move and abut against the abrasive belt 211 (as shown in fig. 9), when the roller 221 is not needed, the first power source 223 is driven, so that the roller mounting bracket 222 drives the roller 221 to reversely move and away from the abrasive belt 211 (as shown in fig. 8), in this embodiment, the roller 221 is automatically controlled to move close to or away from the abrasive belt 211, the operation is more convenient. In the present embodiment, the first power source 223 is a cylinder.

In the utility model, further, still include rotating assembly, rotating assembly includes first rotary platform 241 and third power source 242, the back of support 230 is equipped with first rotary platform installation position 231, first rotary platform 241 install on first rotary platform installation position 231 at the back of support 230, third power source 242 installs the side at first rotary platform 241, is driven first rotary platform 241 rotation by third power source 242 to drive support 230 and the abrasive band 211 thereon and rotate, abrasive band 211 rotates together, thereby realizes the grinding to the work piece multi-angle; the utility model discloses set up rotating assembly's aim at, to the work piece of difference, the position and the angle that need polish are different, the utility model discloses can be through the rotatory effect of rotating assembly to realize support 230 and the rotation of the abrasive band 211 thereon, abrasive band 211 also can rotate, thereby realize carrying out the grinding to the work piece from various angles, grinding effect is better, and the grinding targets in place more.

In the present invention, preferably, the automatic tensioning device further comprises an automatic tensioning assembly, the automatic tensioning assembly comprises a pull rod 272, a compression elastic member 273, a limiting member 274, and a guide groove 271 formed on the support 230, in this embodiment, the compression elastic member 273 is a spring and is a spring in a compressed state, the guide groove 271 is in an inverted U shape, the guide groove 271 penetrates the edge of the support 230, the notch of the guide groove 271 is located at the bottom edge of the support 230, the mounting shaft of the driven wheel 233 can move up and down in the guide groove 271, one end of the pull rod 272 is connected to the mounting shaft 235 of the driven wheel along the guide groove 271, the other end of the pull rod 272 sequentially passes through the limiting member 274 and the compression elastic member 273 along the guide groove 271, the limiting member 274 abuts against the bottom of the guide groove 271, specifically, the limiting member 274 abuts against the notch of the guide groove 271, the spring in the compressed state always has an external tension, when, the pull rod 272 can pull the driven wheel mounting shaft 235 to move downwards, therefore, the spring always drives the pull rod 272 to pull the driven wheel mounting shaft 235 to move downwards, and the driven wheel 233 has a tendency of moving downwards under the action of the driven wheel mounting shaft 235, so that the abrasive belt 211 is always in a tensioned state. The utility model discloses in, the automatic tensioning subassembly aim at of setting, among the prior art, after using a period, thereby abrasive band 211 yielding pine can not the tensioning at action wheel 232 and from between driving wheel 233, and the utility model discloses in, under automatic tensioning subassembly's effect, just can make abrasive band 211 be the state of tensioning all the time to do not influence the effect of grinding.

The utility model discloses in, it is further, still include grudging post 250, lifter plate 251, first slider 252 to and the first guide rail 253 that matches with first slider 252, first guide rail 253 is installed on grudging post 250, first slider 252 sets up on lifter plate 251 and can slide on the first guide rail 253, one side of lifter plate 251 still with first rotary platform 241 is connected, lifter plate 251 can slide along the Z axle direction relative board 1 on first guide rail 253. In this embodiment, specifically, the lifting plate 251 is driven by a first driving device, the first driving device includes a first lead screw 281, a first nut 282, a first connecting block 256, a first lead screw end driven wheel 283, a fifth power source end driven wheel 284, a first belt 285 and a fifth power source 255, the first lead screw 281, the first lead screw end driven wheel 283, the fifth power source end driven wheel 284 and the fifth power source 255 are mounted on the vertical frame 250, specifically, the first lead screw end driven wheel 283 is disposed at one end of the first lead screw 281, the fifth power source end driven wheel 284 is disposed at an output end of the fifth power source 255, the first belt 285 is sleeved on the first lead screw end driven wheel 283 and the fifth power source end driven wheel 284 and is tensioned by the first lead screw end driven wheel 283 and the fifth power source end driven wheel 284, the first lead screw 281 passes through the first nut 282, the first nut 282 is disposed in the first connecting block 256, the first connecting block 256 is fixed on the first lifting plate 251, the fifth power source 255 drives the fifth power source end driving wheel 284 to rotate, the first lead screw end driven wheel 283 also rotates under the action of the first belt 285, so as to drive the first lead screw 281 to rotate, and the first nut 282 and the first connecting block 256 move relative to the first lead screw 281, so as to drive the lifting plate 251 to move up and down along the first guide rail 253. In this embodiment, the purpose of driving the lifting plate 251 to move up and down along the first guide rail 253 is to: during polishing, the polishing degree of the tool shank 92 of the tool 9 can be adjusted in the Z-axis direction according to the polishing requirement, so that the cutting degree and the cutting effect of the tool shank 92 can be controlled.

The utility model discloses in, it is concrete, clamping device 3 includes cutter place the platform 31, clamping component 32, second rotary platform 33, mounting bracket 34 and fourth power supply 35 (please see specifically fig. 12 to 14), cutter place the platform 31 is used for placing the cutter 9 of treating polishing, the utility model discloses in, it is concrete, be that cutter 9's cutter body 91 is located on the cutter place the platform 31, cutter 9's handle of a knife 92 then stretch out in outside the cutter place the platform 31 to this conveniently realizes polishing of handle of a knife 92. Clamping component 32 install in one side on the cutter place platform 31 to can be used to press from both sides tightly or loosen cutter 9 on the cutter place platform 31, of course, clamping component 32 also can install one side of cutter place platform 31 only needs clamping component 32 can press from both sides tightly cutter 9 on the cutter place platform 31 can, cutter place platform 31 installs on second rotary platform 33, and by second rotary platform 33 drives rotatoryly, second rotary platform 33 is installed on mounting bracket 34, fourth power supply 35 is located in mounting bracket 34, second rotary platform 33 is driven by fourth power supply 35. When the utility model is used, a cutter 9 is placed on the cutter placing platform 31 and is clamped by the clamping component 32 to drive the fourth power source 35, the fourth power source 35 drives the second rotary platform 33 to work, thereby driving the cutter placing platform 31 to rotate, so as to drive the cutter 9 on the cutter placing platform 31 to rotate, and because the cutter 9 can rotate, the whole handle 92 of the cutter 9 can be polished at one time when polishing, compared with the prior art, the utility model has the advantages of simple structure, less parts, low cost and easy installation, in addition, the utility model can realize 360-degree rotation of the cutter, therefore, when one side of the cutter 9 is polished, the cutter 9 is not required to be taken out and turned to the other side, and the cutter placing platform 31 is directly driven by the fourth power source 35 to rotate to the other side, very convenient, the utility model discloses the grinding of handle of a knife 92 of cutter 9 just can be realized to one step of targetting in place.

The utility model discloses in, it is preferred, cutter place platform 31 includes platform body 311 and sets up cutter place position 312 on the platform body 311, cutter body 91 is located cutter place position 312 is last. In this embodiment, be equipped with the reinforcement unit that is used for strengthening cutter 9 and places on cutter placement position 312, it is including setting up to consolidate the unit mounting hole 120 and the setting on cutter placement position 312 are in magnet (invisible in the drawing) in the mounting hole 120, when placing cutter 9 when on cutter placement position 312, cutter body 91 can receive the suction effect of the magnet in the mounting hole 120 and paste tight cutter placement position 312, so set up aim at, when clamping component 32 presss from both sides tight cutter body 91, the utility model discloses can also further make cutter 9 paste tight cutter placement position 312 for cutter 9 can be more firm install on cutter placement position 312, and be unlikely to aversion or landing, influence the grinding effect.

In the present invention, preferably, the clamping component 32 is located on the platform body 311, and is located on one side of the cutter placing position 312. The clamping assembly 32 is a rotary cylinder or a manual tool holder. In this embodiment, the clamping assembly 32 is a rotary cylinder, and the rotary cylinder belongs to the prior art and is not described herein again.

The utility model discloses in, it is preferred, 1 board of relatively board of clamping device 3 moves along Y axle direction to the realization is to 2 feed handles 92 of grinding device or withdraw from handle of a knife 92, and is concrete, still includes bottom plate 360, second slider 362 and second guide rail 361, second slider 362 is located 360 upper surfaces of bottom plate, second guide rail 361 install in the bottom of mounting bracket 34, second guide rail 361 with second slider 362 cooperatees, and can slide on the second slider 362, thereby can drive mounting bracket 34 moves along Y axle direction relatively board 1 on second guide rail 361. In this embodiment, specifically, the mounting frame 34 is driven by a second driving device so as to be movable along the Y-axis direction on the second guide rail 361, the second driving device includes a second lead screw 371, a second nut 372, a second connecting block 370, a second lead screw end driven wheel 373, a sixth power source end driven wheel 374, a second belt 375, and a sixth power source 376, the second lead screw 371, the second lead screw end driven wheel 373, the sixth power source end driven wheel 374, and the sixth power source 376 are mounted on the mounting frame 34, specifically, the second lead screw end driven wheel 373 is disposed at one end of the second lead screw, the sixth power source end driven wheel 371 is disposed at an output end of the sixth power source 376, the second belt 375 is sleeved on the second lead screw end driven wheel 373 and the sixth power source end driven wheel 374, and is tensioned by the second lead screw end driven wheel 373 and the sixth power source end driven wheel 374, the second screw rod 371 passes through the second nut 372, the second nut 372 is arranged in the second connecting block 370, the second connecting block 370 is fixed on the bottom plate 360, the sixth power source end driving wheel 374 is driven to rotate by the sixth power source 376, and the second screw rod end driven wheel 373 rotates along with the sixth power source end driving wheel under the action of the second belt 375, so that the second screw rod 371 is driven to transmit in the second nut 372, and the mounting frame 34 can be driven to move on the second guide rail 361 along the Y-axis direction. In this embodiment, the purpose of driving the mounting frame 34 to move on the second guide rail 361 along the Y-axis direction is: during cutting, the cutter handle 92 is fed or withdrawn in the Y-axis direction, so that the cutting degree and effect of the cutter handle 92 can be controlled.

The utility model discloses in, it is preferred, clamping device 3's bottom still is equipped with third slider 12 be equipped with third guide rail 11 on the board 1, third slider 12 with the cooperation of third guide rail 11 just can relative board 1 slides along the X axle direction on the third guide rail 11 to drive clamping device 3 relative board 1 and slide along the X axle direction. In this embodiment, specifically, the movement of the clamping device 3 along the X-axis direction is driven by a third driving device, and the third driving device has the same structure as the first driving device, and is not described again here. In this embodiment, by driving the clamping device 3 to move along the X-axis direction, the tool 9 on the clamping device 3 can be close to or away from the grinding device 2 in the X-axis direction, so as to be close to or away from the abrasive belt 211, and thus, the purpose is to control the polishing degree and polishing effect of the tool 9 on the clamping device 3, and the operation is more flexible.

The present invention can also be configured as a second embodiment (as shown in fig. 15 to 18), which is substantially the same as the first embodiment, except that the roller mounting bracket 222 includes a base 2221 and a plurality of roller mounting seats 2222, the sizes of the ranges of the surface transitions of the roller 221 to the curved surfaces of the two ends 225 of the roller along the axial direction at the middle position 226 are different, so as to form the roller 221 with the first protrusions 224 different in size, as shown in fig. 16, the sizes of the ranges of the surface transitions of the five roller 221 to the curved surfaces of the two ends 225 of the roller along the axial direction at the middle position 226 are different, so that five types of the roller 221 with the first protrusions 224 different in size are provided, the rollers 221 with the first protrusions 224 different in size respectively abut against the abrasive belt 211, the protrusion ranges of the ridge protrusions 214 formed on the front surface 213 side of the abrasive belt 211 are also different, so as to meet different grinding requirements, thereby causing the workpiece to have different grinding effects. The rollers 221 and the roller installation seats 2222 are installed in a one-to-one correspondence manner, the roller installation seats 2222 are installed on the base 2221, and the roller installation seats 2222 can slide relative to the base 2221. Specifically, a fourth guide rail or a fourth slider 2223 is arranged on the base 2221, and a fourth slider or a fourth guide rail that is matched with the fourth guide rail or the fourth slider 2223 is arranged on each roller mounting seat 2222, in this embodiment, specifically, a fourth slider 2223 is arranged on the base 2221, a fourth guide rail (not visible in the drawing) that is matched with the fourth slider 2223 is arranged on each roller mounting seat 2222, and the sliding of the roller mounting seats 2222 on the base 2221 is realized through the matching of the fourth guide rail and the fourth slider. The utility model discloses when using, according to the grinding demand, select corresponding gyro wheel 221, pull out bolt 220, then remove the gyro wheel mount pad 2222 at this selected gyro wheel 221 place, make this gyro wheel 221 remove to the back side of abrasive band 211, utilize locating pin 220 to fix gyro wheel mount pad 2222 on base 2221, carry out relevant work of polishing again. In the embodiment, a plurality of rollers 221 capable of generating different grinding effects are arranged at the same time, so that an operator can flexibly select the rollers, the application range is wider, the operation is convenient, the rollers 221 with different sizes in the range of curved surface transition can be switched only by moving, the rollers do not need to be frequently disassembled and assembled to change the wheels, and the working efficiency is greatly improved.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. A grinding machine comprises a machine table (1), a grinding device (2) arranged on the machine table (1) and a clamping device (3) used for clamping a workpiece, wherein the clamping device (3) is positioned in front of the grinding device (2), the grinding device (2) comprises a bracket (230), a sand belt tensioning assembly installed on the bracket (230), and a sand belt (211), the sand belt (211) is tensioned by the sand belt tensioning assembly, the grinding machine is characterized by further comprising a plurality of rollers (221) installed on the bracket (230), the rollers (221) are positioned on the back surface (212) side of the sand belt (211), first protrusions (224) are arranged on the surface of the rollers (221) along the circumferential direction of the rollers (221), the rollers (221) can abut against the back surface (212) of the sand belt (211), so that the sand belt (211) is partially recessed from the back surface (212) side to the front surface (213) side to form ridge-shaped protrusions capable of grinding the workpiece on the front surface (213) side of the sand belt (211) And (214).

2. A grinding machine according to claim 1, characterized in that the surface of the roller (221) at the intermediate position (226) is curved in the axial direction towards both ends (225) of the roller.

3. A grinding machine according to claim 1 or 2, further comprising a first power source (223) and a roller mounting (222), a number of said rollers (221) being rotatably mounted on said roller mounting (222), said roller mounting (222) being fixed to said carrier (230), said first power source (223) driving said roller mounting (222) to move so that the rollers (221) abut against or are spaced from the sanding belt (211).

4. The grinding machine of claim 3, wherein the roller mount (222) includes a base (2221) and a plurality of roller mounts (2222), the rollers (221) are mounted in one-to-one correspondence with the roller mounts (2222), the roller mounts (2222) are mounted on the base (2221), and the roller mounts (2222) are slidable relative to the base (2221).

5. The grinding machine according to claim 4, characterized in that a fourth guide rail or a fourth slider (2223) is arranged on the base (2221), a fourth slider or a fourth guide rail matched with the fourth guide rail or the fourth slider (2223) is arranged on each roller mounting seat (2222), and the sliding of the roller mounting seat (2222) on the base (2221) is realized through the matching of the fourth guide rail and the fourth slider.

6. A grinding machine according to claim 3, characterized in that the belt tensioning assembly comprises a drive pulley (232) and a driven pulley (233), the drive pulley (232) and the driven pulley (233) being mounted on the carrier (230), the belt (211) being fitted over the drive pulley (232) and the driven pulley (233) and being tensioned by the drive pulley (232) and the driven pulley (233).

7. The grinding machine of claim 6, further comprising a second power source (234) mounted to the carriage (230), the second power source (234) being connected to the drive pulley (232) and driving the drive pulley (232) in rotation, thereby causing the abrasive belt (211) and the driven pulley (233) to rotate.

8. A grinding machine according to claim 1 or 2, further comprising a rotating assembly, the rotating assembly comprising a first rotating platform (241) and a third power source (242), the first rotating platform (241) being mounted on the back of the bracket (230), the third power source (242) being mounted on the side of the first rotating platform (241), the third power source (242) driving the first rotating platform (241) to rotate, thereby driving the bracket (230) and the abrasive belt (211) thereon to rotate.

9. The grinding machine according to claim 6, characterized by further comprising an automatic tensioning assembly, wherein the automatic tensioning assembly comprises a pull rod (272), a compression elastic member (273), a limiting member (274), and a guide groove (271) formed in the bracket (230), the mounting shaft of the driven wheel (233) can move up and down in the guide groove (271), one end of the pull rod (272) is connected with the mounting shaft (235) of the driven wheel upwards along the guide groove (271), the other end of the pull rod passes through the limiting member (274) and the compression elastic member (273) downwards along the guide groove (271) in sequence, the limiting member (274) abuts against the bottom of the guide groove (271), and when the compression elastic member (273) is opened, the pull rod (272) can pull the mounting shaft (235) of the driven wheel to move downwards.

10. The grinding machine according to claim 8, characterized by further comprising a stand (250), a lifting plate (251), a first slider (252), and a first guide rail (253) matched with the first slider (252), wherein the first guide rail (253) is installed on the stand (250), the first slider (252) is arranged on the lifting plate (251) and can slide on the first guide rail (253), one side of the lifting plate (251) is further connected with the first rotating platform (241), and the lifting plate (251) can slide on the first guide rail (253) along the Z-axis direction relative to the machine table (1).

11. A grinding machine according to claim 1 or 2, characterized in that the clamping device (3) comprises a tool placing platform (31), a clamping assembly (32), a second rotating platform (33), a mounting frame (34) and a fourth power source (35), the cutter placing platform (31) is used for placing a cutter (9) to be polished, the clamping assembly (32) is arranged on one side of the cutter placing platform (31), and can be used for clamping or loosening the cutter (9) on the cutter placing platform (31), the cutter placing platform (31) is arranged on a second rotating platform (33), and is driven rotatoryly by second rotary platform (33), second rotary platform (33) is installed on mounting bracket (34), fourth power supply (35) are located in mounting bracket (34), second rotary platform (33) is by fourth power supply (35) drive.

12. A grinding machine according to claim 11, characterized in that the clamping assembly (32) is a rotary cylinder or a manual tool holder.

13. A grinding machine according to claim 12, characterized in that the clamping device (3) is movable in the Y-axis direction relative to the machine table (1).