CN211992280U - Grinding machine - Google Patents

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

a grinding machine

technical field

The utility model relates to the field of grinding equipment, in particular to a grinding machine used for grinding tool handles.

Background technique

Grinding is a cutting process that uses high-speed rotating grinding wheels and other abrasive tools to process the surface of the workpiece. Grinding is used to process the inner and outer cylindrical surfaces, conical surfaces and flat surfaces of various workpieces, as well as special and complex shaped surface workpieces such as threads, gears and splines. Due to the irregularity of the surface of the special-shaped curved workpiece, the surface to be ground is the curved surface or the corner. It can grind the plane surface, and it is difficult to grind the special-shaped curved surface parts.

Chinese patent document CN 107553276A discloses a special-shaped curved surface grinding device, including a machine table, a suction mechanism, a grinding mechanism and a transmission mechanism, the transmission mechanism includes a motor, a driving wheel and a tensioning unit, and the motor is fixedly installed in On the machine table, the driving wheel is fixedly connected with the power output end of the motor, the tensioning unit includes an adjusting rod and a tensioning wheel with adjustable length, the adjusting rod is installed horizontally on the machine table, and one end of the adjusting rod is connected to the machine. The table is fixedly connected, and the other end of the adjustment rod is rotatably connected with the tension wheel; the grinding mechanism includes an abrasive belt, a support rod and a contact grinding wheel, the support rod is installed horizontally on the machine table, and one end of the support rod is connected to the machine table Fixed connection, the other end of the support rod is detachably connected with the contact grinding wheel, and the driving wheel, the tension wheel and the contact grinding wheel are vertically arranged on the same horizontal plane; the abrasive belt is connected to the side wall of the driving wheel, the driving wheel and the contact grinding wheel contact; the suction mechanism includes a negative pressure suction machine, a first suction pipe and a second suction pipe, the first suction pipe and the second suction pipe are both communicated with the negative pressure suction machine, and the first suction pipe One end far away from the negative pressure suction machine is opposite to the driving wheel, and one end of the second suction pipe far away from the negative pressure suction machine is opposite to the contact grinding wheel.

The above-mentioned special-shaped curved surface grinding device in the prior art can grind some large-area curved surfaces to a certain extent, but there are still defects in the actual use process, such as the corners of special-shaped curved surface parts. However, the above-mentioned prior art cannot be processed smoothly, and the use has limitations. Usually, for the corners, it needs to be converted into manual manual grinding. Not only the grinding effect is uneven, there is a big difference, but also the workload is large and the The efficiency is low and it is difficult to meet mass production.

Utility model content

The purpose of the utility model is to provide a grinding machine with higher efficiency and better grinding effect, which can grind the curved surfaces and corners of special-shaped curved surfaces.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a grinding machine is provided, comprising a machine table, a grinding device arranged on the machine table and a clamping device for clamping a workpiece, the clamping device is located in the In front of the grinding device, the grinding device includes a bracket, an abrasive belt tensioning assembly mounted on the bracket, and an abrasive belt, the abrasive belt is tensioned by the abrasive belt tensioning assembly, and also includes Several rollers installed on the bracket, several of the rollers are located on the back side of the abrasive belt, the surface of the roller is provided with a first protrusion along the circumferential direction of the roller, the roller can be pressed against the back of the abrasive belt, so that the abrasive belt Partially recessed from the back side to the front side to form ridges on the front side of the abrasive belt that can grind the workpiece.

As an improvement of the present invention, the surface of the roller is in the middle position along the axial direction to form a curved transition to both ends of the roller.

As an improvement of the present invention, it also includes a first power source and a roller mounting frame, a plurality of the rollers are rotatably mounted on the roller mounting frame, the roller mounting frame is fixed on the bracket, and the first A power source can drive the roller mount to move so that the rollers abut or move away from the abrasive belt.

As an improvement of the present invention, the roller mounting frame includes a base and several roller mounting seats, the rollers and the roller mounting seats are installed in a one-to-one correspondence, the roller mounting seat is installed on the base, and the The roller mount is slidable relative to the base.

As an improvement of the present invention, the base is provided with a fourth guide rail or a fourth sliding block, and each roller mounting seat is provided with a fourth sliding block or a fourth sliding block matched with the fourth guide rail or the fourth sliding block. The fourth guide rail, through the cooperation of the fourth guide rail and the fourth sliding block, realizes the sliding of the roller mounting seat on the base.

As an improvement of the present invention, the abrasive belt tensioning assembly includes a driving wheel and a driven wheel, the driving wheel and the driven wheel are mounted on the bracket, and the abrasive belt is sleeved on the driving wheel and the driven wheel And it is tensioned by the driving wheel and the driven wheel.

As an improvement of the present invention, it also includes a second power source installed on the bracket, the second power source is connected with the driving wheel and drives the driving wheel to rotate, thereby driving the abrasive belt and the driven wheel to rotate.

As an improvement of the present invention, it also includes a rotating assembly, the rotating assembly includes a first rotating platform and a third power source, the first rotating platform is installed on the back of the bracket, and the third power source is installed on the The side of the first rotating platform is driven by the third power source to rotate the first rotating platform, thereby driving the support and the abrasive belt on it to rotate.

As an improvement of the present invention, it also includes an automatic tensioning assembly, the automatic tensioning assembly includes a pull rod, a compression elastic member, a limit member, and a guide groove opened on the bracket, where the installation shaft of the driven wheel can be installed The guide groove moves up and down, one end of the pull rod is connected to the driven wheel installation shaft along the guide groove upward, and the other end follows the guide groove downward through the limit piece and the compression elastic piece in turn. The limit piece is pressed against the bottom of the guide groove. When the compression elastic piece is opened, the pull rod can pull the driven wheel installation shaft to move down.

As an improvement of the present invention, it also includes a vertical frame, a lifting plate, a first sliding block, and a first guide rail matched with the first sliding block, the first guide rail is installed on the vertical frame, and the first sliding block is installed on the vertical frame. The block is arranged on a lifting plate and can slide on the first guide rail, one side of the lifting plate is also connected with the first rotating platform, and the lifting plate can be relative to the machine table on the first guide rail along the Z-axis Swipe in the direction.

As an improvement of the present invention, the clamping device includes a tool placing platform, a clamping assembly, a second rotating platform, a mounting frame and a fourth power source, the tool placing platform is used for placing the tool to be sharpened, the clamp The tightening assembly is mounted on one side of the tool placement platform, and can be used to clamp or loosen the tool on the tool placement platform, the tool placement platform is mounted on the second rotating platform, and is The rotating platform is driven to rotate, the second rotating platform is mounted on the mounting frame, the fourth power source is located in the mounting frame, and the second rotating platform is driven by the fourth power source.

As an improvement of the present invention, the clamping assembly is a rotary cylinder or a manual tool holder.

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

The utility model also includes several rollers installed on the bracket, several of the rollers are located on the back side of the abrasive belt, the surface of the rollers is provided with a first protrusion along the circumferential direction of the rollers, and the rollers can abut against the surface of the abrasive belt. On the back side, the abrasive belt is partially recessed from the back side to the front side, so that a ridge-shaped protrusion that can grind the workpiece is formed on the front side of the abrasive belt. On the back of the belt, as the roller moves to the abrasive belt, the abrasive belt is partially recessed from the back side to the front side, so that a ridge-shaped protrusion that can grind the workpiece is formed on the front side. The formed ridge-shaped protrusions can not only be used for the grinding of curved surfaces, but also can be used for the grinding of corners. The utility model has a wider application range, higher efficiency and better grinding effect; The new type has the advantages of being able to grind the curved surfaces and corners of special-shaped surfaces, with higher efficiency and better grinding effect.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the first embodiment of the present utility model;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is the structural schematic diagram before the abrasive belt against which the roller in Fig. 1 abuts;

FIG. 4 is a schematic structural diagram of the abrasive belt against which the roller in FIG. 1 abuts;

Fig. 5 is the top view of Fig. 3;

Fig. 6 is the enlarged structure schematic diagram of A place in Fig. 5;

Fig. 7 is the top view of Fig. 4;

Fig. 8 is the partial structure schematic diagram of Fig. 1 (before the abrasive belt against which the roller is abutted);

Fig. 9 is a schematic diagram of the abrasive belt against which the roller in Fig. 8 abuts;

Fig. 10 is a partial structural schematic diagram of the grinding device in Fig. 1;

FIG. 11 is a schematic structural diagram of the grinding device in FIG. 1 after being partially disassembled;

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

Figure 13 is a top view after the combination of Figure 12;

FIG. 14 is a schematic structural diagram of the clamping device in FIG. 1 after being partially disassembled;

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

Figure 16 is a top view of the roller mounting frame and the roller in Figure 15;

Figure 17 is a side view of Figure 16;

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

Detailed ways

Below, in conjunction with accompanying drawing and specific embodiment, the utility model is further described:

Please refer to FIG. 1 to FIG. 14 first. FIG. 1 to FIG. 14 disclose the first embodiment of the grinding machine, a grinding machine including a machine table 1, a grinding device 2 arranged on the machine table 1 and A clamping device 3 for clamping a workpiece, the clamping device 3 is located in front of the grinding device 2 , in this embodiment, the workpiece is a tool, and the grinding device 2 is used for grinding a tool holder 92. The clamping device 3 clamps the tool so as to be ground by the grinding device 2; in this embodiment, the grinding device 2 specifically includes a bracket 230 and an abrasive belt tensioner mounted on the bracket 230 A tensioning assembly, and an abrasive belt 211, the abrasive belt 211 is tensioned by the abrasive belt tensioning assembly, specifically, the abrasive belt tensioning assembly includes a driving wheel 232 and a driven wheel 233, the driving wheel 232 and the slave The driving wheel 233 is installed on the bracket 230, and the abrasive 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, It also includes a number of rollers 221 mounted on the bracket 230. In this embodiment, there are three rollers 221. Several rollers 221 are located on the back side 212 of the abrasive belt 211. The surface of the rollers 221 follows the rollers A first protrusion 224 is provided in the circumferential direction of the 221, and the roller 221 can abut on 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 grindable surface on the front surface 213 side of the abrasive belt 211. The ridge 214 of the workpiece. In order to enable the abrasive belt 211 to rotate and realize automatic grinding of the workpiece, a second power source 234 is installed on the bracket 230. The second power source 234 is connected to the driving wheel 232 and drives the driving wheel 232 to rotate, thereby driving the sand The belt 211 and the driven wheel 233 move, so that the abrasive belt 211 can be tensioned and moved between the driving wheel 232 and the driven wheel 233. When the roller 221 is in contact with the abrasive belt 211, the abrasive belt 211 moves, and the roller 221 in contact with it also moves. will scroll with it.

In the present invention, further, the surface of the roller 221 transitions to the two ends 225 of the roller along the axial direction at the intermediate position 226 in a curved surface. The purpose of this setting is that the design can make the highest part of the ridge-shaped protrusion 214 appear in the shape of a curved surface. The curved surface is conducive to grinding the corners with relatively narrow space, and at the same time, it is not easy to damage the abrasive belt 211 . When the utility model is grinding, the abrasive belt 211 is tensioned, the roller 221 is close to the abrasive belt 211 and the roller 221 is pressed against the back side 212 of the abrasive belt 211, so that the abrasive belt 211 is partially recessed from the back side 212 side to the front side 213 side so that the A ridge-shaped protrusion 214 (as shown in FIG. 4 and FIG. 7 ) that can grind the workpiece is formed on the side of the front surface 213 . In the present invention, the surface of the roller 221 is provided with the first protrusion 224 along the circumferential direction of the roller 221 . The special structure of the roller 221 makes the roller 221 press against the back surface 212 of the abrasive belt 211, mainly because the first protrusion 224 of the roller 221 presses against the back surface 212 of the abrasive belt 211. The side is concave to the front face 213 side to form a ridge-shaped protrusion 214 which can grind the workpiece on the front-face 213 side, and the ridge-shaped protrusion 214 is in the shape of an elongated strip. The grinding of special-shaped curved surfaces can also be used for the grinding of parts with relatively narrow spaces such as corners, which is more flexible to use. Therefore, the abrasive belt 211 in the present invention can not only be used for the grinding of curved surfaces, but also Compared with the prior art, the utility model has wider application range.

In the present invention, it further includes a first power source 223 and a roller mounting frame 222. The three rollers 221 in this embodiment (of course, the number of rollers 221 can be installed according to grinding requirements) are rotatably mounted. On the roller mounting frame 222 , the roller mounting frame 222 is fixed on the bracket 230 , and the first power source 223 can drive the roller mounting frame 222 to move, so that the roller 221 is pressed against or away from the sand. For the movement of the belt 211, when the roller 221 is required, the first power source 223 is driven to drive the roller 221 to move and abut on the abrasive belt 211 (as shown in FIG. 9). When the roller 221 is not needed, the first power source is driven 223, the roller mounting frame 222 drives the roller 221 to move in the reverse direction and away from the abrasive belt 211 (as shown in Figure 8). In this embodiment, the first power source 223 is a cylinder.

In the present invention, it further includes a rotating assembly, the rotating assembly includes a first rotating platform 241 and a third power source 242, the back of the bracket 230 is provided with a first rotating platform installation position 231, the first rotating platform The rotating platform 241 is installed on the first rotating platform installation position 231 on the back of the bracket 230 , the third power source 242 is installed on the side of the first rotating platform 241 , and the third power source 242 drives the first rotating platform 241 The rotating platform 241 rotates, thereby driving the bracket 230 and the abrasive belt 211 on it to rotate, and the abrasive belt 211 rotates together, thereby realizing multi-angle grinding of the workpiece; , the positions and angles that need to be polished are different, the utility model can realize the rotation of the bracket 230 and the abrasive belt 211 on it through the action of the rotation of the rotating component, and the abrasive belt 211 can also rotate, so as to realize the workpiece from various angles. Grinding, the grinding effect is better, and the grinding is more in place.

In the present invention, it is preferable to further include an automatic tensioning assembly, the automatic tensioning assembly includes a pull rod 272, a compression elastic member 273, a limiting member 274, and a guide groove 271 opened on the bracket 230. This embodiment In the example, the compression elastic member 273 is a spring, which is a compressed spring, the guide groove 271 is an inverted U shape, the guide groove 271 penetrates to the edge of the bracket 230, and the notch of the guide groove 271 Located on the bottom edge of 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 to the driven wheel mounting shaft 235 along the guide groove 271 upward, and the other end is downward along the guide groove 271 Passing through the limiting member 274 and the compression elastic member 273 in sequence, 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, and the compressed spring always has an outward Tension, when the compressive elastic member 273 is opened, the pull rod 272 can pull the driven wheel mounting shaft 235 to move downward. Therefore, the spring always drives the pull rod 272 to pull the driven wheel mounting shaft 235 to move downward, and the driven wheel 233 is affected by the driven wheel mounting shaft 235. However, there is a tendency to move downward, so that the abrasive belt 211 is always in a state of tension. In the present invention, the purpose of the automatic tensioning assembly is that in the prior art, after a period of use, the abrasive belt 211 is easily deformed and loosened so that it cannot be tensioned between the driving wheel 232 and the driven wheel 233, while the utility model In the new type, under the action of the automatic tensioning component, the abrasive belt 211 can always be in a tensioned state, so that the grinding effect is not affected.

In the present invention, it further includes a stand 250, a lifting plate 251, a first sliding block 252, and a first guide rail 253 matched with the first sliding block 252, and the first guide rail 253 is installed on the stand 250, the first sliding block 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 also connected with the first rotating platform 241, and the lifting plate 251 The plate 251 can slide relative to the machine table 1 along the Z-axis direction on the first guide rail 253 . In this embodiment, specifically, the lifting plate 251 is driven by a first driving device, and the first driving device includes a first screw rod 281 , a first nut 282 , a first connection block 256 , and a first screw rod The end driven wheel 283, the fifth power source end driving wheel 284, the first belt 285 and the fifth power source 255, the first screw 281, the first screw end driven wheel 283, the fifth power source end driving wheel 284 and the fifth power source 255 are installed on the stand 250. Specifically, the first screw end driven wheel 283 is arranged at one end of the first screw rod 281, and the fifth power source end driving wheel 284 is arranged at the At the output end of the fifth power source 255, the first belt 285 is sleeved on the first screw end driven wheel 283 and the fifth power source end driving wheel 284, and is connected by the first screw end driven wheel 283 and the fifth power source end driving wheel 284. The fifth power source end driving wheel 284 is tensioned, the first screw rod 281 passes through the first nut 282, and the first nut 282 is arranged in the first connecting block 256, and the first connecting block 256 is fixed on the On the first lifting plate 251, the fifth power source end driving pulley 284 is driven to rotate by the fifth power source 255, and under the action of the first belt 285, the first screw end driven pulley 283 also rotates accordingly, As a result, the first screw rod 281 is driven to rotate, and the first nut 282 and the first connecting block 256 move relative to the first screw rod 281 , thereby driving the lift 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: during grinding, the grinding degree of the handle 92 of the tool 9 can be adjusted in the Z-axis direction according to grinding requirements, so as to control the grinding The degree to which the shank 92 is cut and the effect of the cut.

In the present invention, specifically, the clamping device 3 includes a tool placement platform 31, a clamping assembly 32, a second rotating platform 33, a mounting frame 34 and a fourth power source 35 (refer to FIGS. 12 to 14 for details) , the tool placement platform 31 is used to place the tool 9 to be polished. In the present invention, specifically, the tool body 91 of the tool 9 is located on the tool placement platform 31, and the handle 92 of the tool 9 is located on the tool placement platform 31. Then it protrudes out of the tool placement platform 31 , so as to facilitate the grinding of the tool handle 92 . The clamping assembly 32 is installed on one side of the tool placing platform 31, and can be used to clamp or loosen the tool 9 on the tool placing platform 31. Of course, the clamping assembly 32 can also be installed on One side of the tool placement platform 31 only needs to be able to clamp the tool 9 on the tool placement platform 31 by the clamping assembly 32, and the tool placement platform 31 is installed on the second rotating platform 33, and Driven to rotate by the second rotating platform 33, the second rotating platform 33 is installed on the mounting frame 34, the fourth power source 35 is located in the mounting frame 34, and the second rotating platform 33 is driven by the fourth The power source 35 drives. When the utility model is in use, the tool 9 is placed on the tool placement platform 31, clamped by the clamping assembly 32, and the fourth power source 35 is driven, and the fourth power source 35 drives the fourth power source 35. The second rotating platform 33 works, thereby driving the tool placing platform 31 to rotate, thereby driving the tool 9 on the tool placing platform 31 to rotate. Since the tool 9 can be rotated, during grinding, the handle of the tool 9 can be adjusted at one time. 92 is ground as a whole. Compared with the prior art, the utility model has simple structure, few parts, low cost, and easy installation. In addition, the utility model can realize 360° rotation of the tool. Therefore, after grinding the tool 9 When it is on one side, it is not necessary to stop and take the tool 9 and turn it over to the other side, and directly drive the tool placement platform 31 to rotate to the other side through the fourth power source 35, which is very convenient. The utility model can realize the cutting tool 9 in one step. Grinding of shank 92.

In the present invention, preferably, the tool placement platform 31 includes a platform body 311 and a tool placement position 312 provided on the platform body 311, and the tool body 91 is located on the tool placement position 312. In this embodiment, the tool placement position 312 is provided with a reinforcement unit for reinforcing the placement of the cutter 9 , and the reinforcement unit includes a mounting hole 120 provided on the cutter placement position 312 and a mounting hole 120 provided in the mounting hole 120 . The magnet (not visible in the figure), when the tool 9 is placed on the tool placement position 312, the tool body 91 will be close to the tool placement position 312 by the suction of the magnet in the mounting hole 120. The purpose of this setting is That is, while the tool body 91 is clamped by the clamping assembly 32, the present invention can further make the tool 9 abut against the tool placement position 312, so that the tool 9 can be more firmly installed on the tool placement position 312 without the As for shifting or slipping, it affects the grinding effect.

In the present invention, preferably, the clamping assembly 32 is located on the platform body 311 and is located on one side of the tool placement position 312 . The clamping assembly 32 is a rotary cylinder or a manual tool holder. In this embodiment, the clamping assembly 32 selects a rotary cylinder, which belongs to the prior art and will not be repeated here.

In the present invention, preferably, the clamping device 3 can move relative to the machine table 1 along the Y-axis direction, so as to feed the tool shank 92 to the grinding device 2 or withdraw the tool shank 92, and specifically, it also includes a bottom plate 360, A second sliding block 362 and a second guide rail 361, the second sliding block 362 is located on the upper surface of the bottom plate 360, the second guide rail 361 is mounted on the bottom of the mounting frame 34, and the second guide rail 361 is connected to the The second sliding block 362 is matched and can slide on the second sliding block 362 , so as to drive the mounting frame 34 to move relative to the machine table 1 along the Y-axis direction on the 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 screw rod 371, a second The nut 372, the second connection block 370, the second screw end driven wheel 373, the sixth power source end driving wheel 374, the second belt 375 and the sixth power source 376, the second screw rod 371, the second screw rod The end driven wheel 373 , the sixth power source end driving wheel 374 and the sixth power source 376 are mounted on the mounting frame 34 . Specifically, the second screw end driven wheel 373 is arranged at one end of the second screw rod 371 , the sixth power source end driving pulley 374 is arranged at the output end of the sixth power source 376, the second belt 375 is sleeved on the second screw end driven pulley 373 and the sixth power source end driving pulley 374 and tensioned by the second screw end driven wheel 373 and the sixth power source end driving wheel 374, the second screw rod 371 passes through the second nut 372, and the second nut 372 is arranged on the second connection In the block 370, the second connecting block 370 is fixed on the bottom plate 360, and the sixth power source end driving pulley 374 is driven to rotate by the sixth power source 376. Under the action of the second belt 375, the second wire The rod end driven wheel 373 also rotates accordingly, thereby driving the second screw rod 371 to drive in the second nut 372 , thereby driving the mounting frame 34 to move along the Y-axis direction on the second guide rail 361 . In this embodiment, the purpose of driving the mounting frame 34 to move along the Y-axis direction on the second guide rail 361 is to realize the feed handle 92 or the withdrawal handle 92 of the tool 9 in the Y-axis direction during cutting, so as to control The degree to which the handle 92 cuts and the effect of the cut.

In the present invention, preferably, the bottom of the clamping device 3 is further provided with a third sliding block 12 , and a third guide rail 11 is provided on the machine table 1 , and the third sliding block 12 is connected with the first sliding block 12 . The three guide rails 11 are matched and can slide relative to the machine table 1 along the X-axis direction on the third guide rail 11 , thereby driving the clamping device 3 to slide relative to the machine table 1 along the X-axis direction. In this embodiment, specifically, the movement of the clamping device 3 along the X-axis direction is driven by a third driving device. The third driving device has the same structure as the first driving device, and will not be repeated here. In this embodiment, by driving the movement of the clamping device 3 along the X-axis direction, the tool 9 on the clamping device 3 can approach or move away from the grinding device 2 in the X-axis direction, thereby approaching or moving away from the abrasive belt 211 , and so on. The purpose is to control the grinding degree and grinding effect of the cutter 9 on the clamping device 3, and the operation is more flexible.

The present invention can also be set to a second embodiment (as shown in FIGS. 15 to 18 ). The second embodiment is substantially the same as the first embodiment, except that the roller mounting frame 222 includes a base. 2221 and several roller mounting seats 2222, the surface of the roller 221 at the intermediate position 226 is different in the size of the range of transition to the curved surface of both ends 225 of the roller in the axial direction, so as to form the rollers 221 with different sizes of the first protrusions 224, such as As shown in FIG. 16 , the size of the transition range of the surfaces of the five rollers 221 to the two ends 225 of the rollers in the axial direction at the intermediate position 226 is different, so there are five types of rollers 221 with different sizes of the first protrusions 224 . The rollers 221 with different sizes of the ridges 224 are respectively pressed against the abrasive belt 211, and the ridge-shaped protrusions 214 formed on the front surface 213 side of the abrasive belt 211 have different protrusion amplitudes, so they can meet different grinding requirements, so that the The workpiece forms different grinding effects. The rollers 221 are installed in a one-to-one correspondence with the roller mounts 2222 , the roller mounts 2222 are mounted on the base 2221 , and the roller mounts 2222 can slide relative to the base 2221 . Specifically, the base 2221 is provided with a fourth guide rail or a fourth sliding block 2223, and each roller mounting seat 2222 is provided with a fourth sliding block or a fourth sliding block 2223 that cooperates with the fourth guide rail or the fourth sliding block 2223. The fourth guide rail, in this embodiment, specifically, the base 2221 is provided with a fourth sliding block 2223, and each of the roller mounting bases 2222 is provided with a fourth guide rail ( (not visible in the figure), the sliding of the roller mounting seat 2222 on the base 2221 is realized by the cooperation of the fourth guide rail and the fourth sliding block. When the utility model is in use, according to the grinding requirements, select the corresponding roller 221, pull out the latch 220, and then move the roller mounting seat 2222 where the selected roller 221 is located, so that the roller 221 is moved to the back side of the abrasive belt 211. , use the positioning pin 220 to fix the roller mounting seat 2222 on the base 2221, and then perform the related grinding work. In this embodiment, a variety of rollers 221 that can produce different grinding effects are set at the same time, which can be flexibly selected by the operator, has a wider application range, and is easy to operate. It only needs to move to switch the size of the surface transition range. Different rollers 221 do not need to be disassembled and installed frequently to change the wheels, which greatly improves the work efficiency.

For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all these changes and deformations should fall within the protection scope of the claims of the present invention.

Claims (13)

1. A grinding machine, comprising a machine table (1), a grinding device (2) arranged on the machine table (1) and a clamping device (3) for clamping a workpiece, the clamping device ( 3) Located in front of the grinding device (2), the grinding device (2) includes a bracket (230), an abrasive belt tensioning assembly mounted on the bracket (230), and an abrasive belt (211) , the abrasive belt (211) is tensioned by the abrasive belt tensioning assembly, characterized in that it also includes a plurality of rollers (221) mounted on the bracket (230), and a plurality of the rollers (221) are located in the sand On the backside (212) side of the 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 backside of the abrasive belt (211). (212), the abrasive belt (211) is partially recessed from the back (212) side to the front (213) side to form a ridge-shaped protrusion (214) on the front (213) side of the abrasive belt (211) that can grind the workpiece ). 2 . The grinding machine according to claim 1 , characterized in that, the surface of the roller ( 221 ) transitions from a curved surface to both ends ( 225 ) of the roller along the axial direction at the intermediate position ( 226 ). 3 . 3. The grinding machine according to claim 1 or 2, characterized in that, further comprising a first power source (223) and a roller mounting frame (222), wherein a plurality of the rollers (221) are rotatably mounted on the On the roller mounting bracket (222), the roller mounting bracket (222) is fixed on the bracket (230), and the first power source (223) can drive the roller mounting bracket (222) to move, so that the The roller (221) abuts against or moves away from the abrasive belt (211). 4. The grinding machine according to claim 3, wherein the roller mounting frame (222) comprises a base (2221) and several roller mounting seats (2222), the roller (221) is connected to the roller The mounting seats (2222) are installed in one-to-one correspondence, the roller mounting seat (2222) is mounted on the base (2221), and the roller mounting seat (2222) can slide relative to the base (2221). 5. The grinding machine according to claim 4, wherein a fourth guide rail or a fourth sliding block (2223) is provided on the base (2221), and each roller mounting seat (2222) is provided with a fourth guide rail or a fourth sliding block (2223). There is a fourth slider or a fourth guide rail that cooperates with the fourth guide rail or the fourth slider (2223), and the roller mounting seat (2222) is installed on the base (2221) through the cooperation of the fourth guide rail and the fourth slider. swipe on. 6. The grinding machine according to claim 3, wherein the abrasive belt tensioning assembly comprises a driving wheel (232) and a driven wheel (233), the driving wheel (232) and the driven wheel (233) Installed on the bracket (230), the abrasive belt (211) is sleeved on the driving wheel (232) and the driven wheel (233) and stretched by the driving wheel (232) and the driven wheel (233) tight. 7. The grinding machine according to claim 6, further comprising a second power source (234) mounted on the bracket (230), the second power source (234) being connected to the driving wheel ( 232) is connected and drives the driving wheel (232) to rotate, thereby driving the abrasive belt (211) and the driven wheel (233) to rotate. 8. The grinding machine according to claim 1 or 2, characterized in that it further comprises a rotating assembly comprising a first rotating platform (241) and a third power source (242), the first rotating A platform (241) is mounted on the back of the bracket (230), the third power source (242) is mounted on the side of the first rotating platform (241), and the third power source (242) drives the first The rotating platform (241) rotates, thereby driving the support (230) and the abrasive belt (211) on it to rotate. 9 . The grinding machine according to claim 6 , further comprising an automatic tensioning assembly, the automatic tensioning assembly comprising a pull rod ( 272 ), a compression elastic member ( 273 ), a limiting member ( 274 ), 10 . and a guide groove (271) provided on the bracket (230), the mounting shaft of the driven wheel (233) can move up and down in the guide groove (271), and one end of the pull rod (272) follows the guide groove (271) Connect to the driven wheel mounting shaft (235) upward, and the other end follows the guide groove (271) downward through the limiting piece (274) and the compression elastic piece (273) in turn, and the limiting piece (274) abuts the guide groove (274). 271) at the bottom, when the compression elastic member (273) is opened, the pull rod (272) can pull the driven wheel mounting shaft (235) to move downward. 10. The grinding machine according to claim 8, characterized in that, further comprising a stand (250), a lifting plate (251), a first sliding block (252), and a matching with the first sliding block (252) A first guide rail (253), the first guide rail (253) is installed on the vertical frame (250), and the first sliding block (252) is arranged on the lifting plate (251) and can be installed on the first The guide rail (253) slides, and one side of the lift plate (251) is also connected to the first rotating platform (241). 1) Slide along the Z-axis direction. 11. The grinding machine according to claim 1 or 2, wherein the clamping device (3) comprises a tool placement platform (31), a clamping assembly (32), a second rotating platform (33), A mounting frame (34) and a fourth power source (35), the tool placement platform (31) is used for placing the tool (9) to be sharpened, and the clamping assembly (32) is mounted on the tool placement platform (31) ), and can be used to clamp or loosen the tool (9) on the tool placing platform (31), which is mounted on the second rotating platform (33) and is controlled by The second rotating platform (33) is driven to rotate, the second rotating platform (33) is installed on the mounting frame (34), and the fourth power source (35) is located in the mounting frame (34), so The second rotating platform (33) is driven by a fourth power source (35). 12. The grinding machine according to claim 11, characterized in that, the clamping assembly (32) is a rotary cylinder or a manual tool holder. 13. The grinding machine according to claim 12, characterized in that, the clamping device (3) can move relative to the machine table (1) along the Y-axis direction.

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