Numerical control roll grinder suitable for special steel

Abstract

The invention relates to the field of numerical control grinding machines, and discloses a numerical control roll grinding machine suitable for special steel, which comprises a base, electric cabinets are arranged on two sides of the base, the two electric cabinets are used for clamping a first roll, laser detection pieces are symmetrically mounted on the base in a sliding manner, and the laser detection pieces are used for detecting the surface of the first roll. A grinding limiting plate is fixedly installed on the side portion of the base, a grinding detection piece is slidably installed on the top of the grinding limiting plate, a grinding cooling device is arranged on the grinding detection piece, and a grinding device is rotatably installed on the side portion of the grinding detection piece; a first grinding block and a second grinding block on the grinding device rotate to grind a first roller, a first connecting piece, a grinding piece and a second connecting piece are arranged on the first grinding block and the second grinding block, and the first grinding block and the second grinding block adapt to the concave-convex degree of the surface of the first roller; and the problem that the grinding precision is reduced when the first grinding block and the second grinding block grind the first roller again is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of numerical control grinding machine, more particularly, it relates to a numerical control roll grinder suitable for special steel. BACKGROUND

[0002] Special steel refers to steel with special chemical composition and complex process treatment, which has excellent properties such as high strength, high hardness, high wear resistance or corrosion resistance. It is these outstanding characteristics that make them face the challenge of easy grinding burn and crack during processing. Therefore, the numerical control roll grinder specially designed for it emerges as the times require. It is a precision machine tool integrating high-pressure cooling system, high-rigidity electric spindle and online measurement technology, which can intelligently control the grinding process and effectively suppress the grinding heat, so as to efficiently and accurately repair the roll surface and ensure the excellent performance and long service life of the special steel roll A numerical control roll grinder is disclosed in a patent application with publication number CN116810512A, which comprises a base, an infrared detection transmission structure is arranged on the top of the base near the front surface, roll fixing and rotating assemblies are symmetrically arranged on the back of the infrared detection transmission structure, roll load-bearing and buffering assemblies are symmetrically arranged between the roll fixing and rotating assemblies, a transmission rail is symmetrically arranged on the front surface of the base near the back, an operation platform structure is arranged on the top of the transmission rail near the right side, a grinding structure is arranged on the left side of the operation platform structure, the infrared detection transmission structure comprises a first transmission box, a limiting rail, a second transmission box, a transmission machine, a transmission motor, a load-bearing bearing, a transmission shaft, a fixing shaft and a front infrared detector, the limiting rail is arranged on the right side of the first transmission box, and the second transmission box is arranged on the right side of the limiting rail.

[0003] The above device can improve the overall protection of the roll grinder through the infrared detection mechanism during use, but during the initial grinding of the roll, there are many impurities adhered to the surface, and the surface may have uneven conditions, so during grinding, the grinding wheel will passively "copy" the original irregular shape of the roll, and cannot grind the ideal cylindrical shape or the required specific curve. The grinding roller cannot adapt to the concave-convex degree of the roll surface, and cannot perform preliminary processing. SUMMARY

[0004] The present application provides a numerical control roll grinder suitable for special steel, which solves the technical problem that in related art, during the initial grinding of the roll, there are many impurities adhered to the surface, and the surface may have uneven conditions, so during grinding, the grinding wheel will passively "copy" the original irregular shape of the roll, and cannot grind the ideal cylindrical shape or the required specific curve. The grinding roller cannot adapt to the concave-convex degree of the roll surface, and cannot perform preliminary processing.

[0005] The application provides a numerical control roller grinding machine suitable for special steel materials, which comprises a base, electric control boxes are arranged on the two sides of the base, the two electric control boxes are used for clamping the first roller, symmetrical laser detection pieces are slidably installed on the base, the laser detection pieces are used for detecting the surface of the first roller, a grinding limiting plate is fixedly installed on the side of the base, a grinding detection piece is slidably installed on the top of the grinding limiting plate, a grinding cooling device is arranged on the grinding detection piece, a grinding device is rotatably installed on the side of the grinding detection piece, and the grinding device is used for grinding the first roller and adapting to the concave-convex degree of the surface of the first roller; the grinding device comprises a first fixing block, a limiting piece, a first connecting piece, a grinding piece, a first grinding block, a second grinding block, a second connecting piece and a limiting transmission piece, the first fixing block is fixedly installed at the end of the grinding detection piece, the first connecting piece is rotatably installed at the end of the first fixing block, the limiting piece is rotatably installed in the first fixing block, the grinding piece is rotatably installed at the end of the first connecting piece, the second connecting piece is rotatably installed on the grinding piece away from the first connecting piece, the first grinding block and the second grinding block are arranged outside the grinding piece, a plurality of first grinding blocks and second grinding blocks are connected through the second connecting piece, the first grinding block and the second grinding block are used for grinding the surface of the first roller, and the first grinding block and the second grinding block are used for adapting to the uneven surface of the first roller; and the first connecting piece is used for limiting the positions of the first grinding block and the second grinding block.

[0006] As a further optimization scheme of the application, the limiting piece comprises a first threaded rod rotatably installed on the first fixing block, a clamping moving plate is threadedly installed outside the first threaded rod, a motor connecting column is slidably installed in the clamping moving plate, the motor connecting column is rotatably installed in the first fixing block, a limiting rotary block is rotatably installed on the side of the clamping moving plate, the limiting rotary block is concentric with the motor connecting column, the limiting rotary block is slidably installed with the motor connecting column, the motor connecting column penetrates through the limiting rotary block and is connected with the first connecting piece, a limiting protrusion is fixedly installed at the end of the limiting rotary block, and the limiting protrusion is used for being in contact with the limiting transmission piece.

[0007] As a further optimization scheme of the application, the first connecting piece comprises a first connecting block fixedly installed at the end of the motor connecting column away from the first fixing block, a second connecting block is rotatably installed in the first connecting block, a first telescopic rod is fixedly installed on the side of the second connecting block, a third connecting block is fixedly installed at the end of the first telescopic rod, a first rotary column is rotatably installed in the inside of the third connecting block, the first rotary column is rotatably installed in the inside of the grinding piece, a first spring is fixedly installed on the side of the third connecting block, and the first spring is concentric with the first telescopic rod.

[0008] As a further optimization scheme of the present application, the polishing member comprises a second mounting block rotatably mounted outside the first rotating column, a first mounting plate fixedly mounted at the center of the second mounting block, and a second rotating column rotatably mounted at the center of the outer portion of the second mounting block away from the first connecting member, and a first U-shaped block fixedly mounted at the end of the second rotating column.

[0009] As a further optimization scheme of the present application, the second connecting member comprises a second telescopic rod fixedly mounted at the side of the first U-shaped block, a second spring provided at the outer portion of the second telescopic rod, and a third U-shaped block fixedly mounted at the end of the second spring.

[0010] As a further optimization scheme of the present application, the limiting transmission member comprises a first sliding plate slidably mounted inside the first polishing block, symmetrically arranged third springs fixedly mounted at both ends of the first sliding plate, and a sliding rod fixedly mounted at the center of the first sliding plate, and the third springs are concentric with the sliding rod.

[0011] As a further optimization scheme of the present application, the distance between the first threaded rod and the motor connecting column is greater than the diameter of the first polishing block.

[0012] As a further optimization scheme of the present application, the diameter of the limiting protrusion is the same as the diameter of the sliding rod, and the limiting protrusion is always concentric with the sliding rod when the limiting protrusion and the sliding rod rotate.

[0013] As a further optimization scheme of the present application, a second polishing block is arranged between the two first polishing blocks, and a hole concentric with the sliding rod is arranged inside the second polishing block.

[0014] As a further optimization scheme of the present application, the first polishing block and the second polishing block are connected through the second connecting member, and the elastic force of the first spring is the same as the elastic force of the second spring.

[0015] The present application has the following advantages: The numerical control roll grinder suitable for special steel materials comprises a first polishing block and a second polishing block on a polishing device, which rotate to polish a first roll, and a first connecting member, a polishing member, and a second connecting member are arranged on the first polishing block and the second polishing block, so that the first polishing block and the second polishing block adapt to the concave-convex degree of the surface of the first roll, a limiting member can clamp a plurality of first polishing blocks and second polishing blocks, so that the centers of the first polishing blocks and the second polishing blocks are on the same straight line, and then polishing can be performed again, preventing the first polishing block and the second polishing block from deforming during polishing, and enabling preliminary polishing to be performed, so that the surface of the first roll tends to be smooth, and preventing the polishing accuracy from being reduced when the first polishing block and the second polishing block polish the first roll again. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall shape of the device of the present invention; Figure 2 This is a schematic diagram of the overall device installation of the present invention; Figure 3 This is an internal structural diagram of the polishing device of the present invention; Figure 4 This is a diagram of the internal structure of the limiting transmission component of the present invention; Figure 5 This is a diagram of the internal structure of the first connector of the present invention; Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0017] In the picture: 1. Base; 11. Electrical control box; 12. Laser detection component; 13. First roll; 14. Grinding limit plate; 15. Grinding detection component; 16. Grinding cooling device; 2. Grinding device; 21. First fixed block; 22. Limiting component; 221. Clamping moving plate; 222. First threaded rod; 223. Limiting rotating block; 224. Motor connecting column; 225. Limiting protrusion; 23. First connecting component; 231. First connecting block; 232. Second connecting block; 233. First telescopic rod; 234. First spring; 235. Third connecting block; 236. First rotating column; 24. Grinding component; 241. First mounting plate; 242. Second mounting block; 243. First U-shaped block; 244. Second rotating column; 25. First grinding block; 26. Second grinding block; 27. Second connecting component; 271. Second telescopic rod; 272. Second spring; 273. Third U-shaped block; 28. Limiting transmission component; 281. First sliding plate; 282. Third spring; 283. Sliding rod. Detailed Implementation

[0018] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0019] like Figures 1 to 3As shown, the numerical control roll grinder suitable for special steel is characterized in that the numerical control roll grinder suitable for special steel comprises a base 1, electric control boxes 11 are arranged on both sides of the base 1, the two electric control boxes 11 are used for clamping the first roll 13, laser detection pieces 12 are symmetrically arranged and are slidably installed on the base 1, the laser detection pieces 12 are used for detecting the surface of the first roll 13, grinding limiting plates 14 are fixedly installed on the side of the base 1, grinding detection pieces 15 are slidably installed on the top of the grinding limiting plates 14, grinding cooling devices 16 are arranged on the grinding detection pieces 15, grinding devices 2 are rotatably installed on the side of the grinding detection pieces 15, and the grinding devices 2 are used for grinding the first roll 13 and adapting to the concave-convex degree of the surface of the first roll 13. As Figures 4 to 6 shown, the grinding device 2 comprises a first fixed block 21, a limiting piece 22, a first connecting piece 23, a grinding piece 24, a first grinding block 25, a second grinding block 26, a second connecting piece 27, and a limiting transmission piece 28, the first fixed block 21 is fixedly installed at the end of the grinding detection piece 15, the first connecting piece 23 is rotatably installed at the end of the first fixed block 21, the limiting piece 22 is rotatably installed in the first fixed block 21, the grinding piece 24 is rotatably installed at the end of the first connecting piece 23, the second connecting piece 27 is rotatably installed on the grinding piece 24 away from the first connecting piece 23, the first grinding block 25 and the second grinding block 26 are arranged on the outside of the grinding piece 24, the first grinding block 25 and the second grinding block 26 are connected through the second connecting piece 27, the first grinding block 25 and the second grinding block 26 are used for grinding the surface of the first roll 13, the first grinding block 25 and the second grinding block 26 are used for adapting to the uneven surface of the first roll 13, and the first connecting piece 23 is used for limiting the position of the first grinding block 25 and the second grinding block 26.

[0020] It should be noted that when the roller is polished, the surface may be uneven due to transportation and adhesion of impurities, and the traditional polishing wheel is straight, so in the process of use, it will be affected by the curvature of the workpiece surface itself, which will cause the polishing to be unable to achieve the desired effect, and the polishing will be unable to adjust automatically, which will cause the deformation to be serious during polishing. Therefore, the polishing device 2 is arranged on the polishing detection piece 15 at the lower part of the polishing cooling device 16. When the first roller 13 needs to be polished, the motor is started to drive the first connecting piece 23 to rotate, and the rotation of the first connecting piece 23 can drive the polishing piece 24 and the second connecting piece 27 to rotate, so as to drive the first polishing block 25 and the second polishing block 26 connected to the outside of the polishing piece 24 to rotate. Then the polishing cooling device 16 is started to spray cooling liquid on the surface of the first polishing block 25 and the second polishing block 26, so as to cool during polishing. Then the polishing limiting plate 14 is started to drive the polishing detection piece 15 to move, so that the polishing device 2 and the polishing cooling device 16 on the polishing detection piece 15 move towards the first roller 13, thereby polishing the first roller 13. At this time, the first polishing block 25 and the second polishing block 26 are driven by the first connecting piece 23, the polishing piece 24 and the second connecting piece 27 to adapt to the shape of the surface of the first roller 13 during polishing, thereby preventing the shape of the first polishing block 25 and the second polishing block 26 from changing due to the change of the shape of the surface of the first roller 13 during polishing. After a certain amount of polishing, the dirt on the surface of the first roller 13 is removed and the protrusions on the first roller 13 gradually become in the same straight line. Then the polishing limiting plate 14 is started to drive the polishing detection piece 15 to move away from the first roller 13, and at this time the plurality of first polishing blocks 25 and second polishing blocks 26 are reset. Then the limiting piece 22 is started to drive the plurality of first polishing blocks 25 and second polishing blocks 26 to move close to each other until the limiting piece 22 extrudes the limiting transmission piece 28 in the first polishing block 25, and then the limiting transmission piece 28 in the two first polishing blocks 25 slides into the second polishing block 26. The two first polishing blocks 25 are driven by the limiting piece 22 to make the outside of the first polishing block 25 and the outside of the second polishing block 26 in the same center, and then the polishing limiting plate 14 is started to drive the polishing detection piece 15 to move towards the first roller 13 for polishing until the polishing is completed. Then the polishing limiting plate 14 is started to drive the polishing detection piece 15 to move away from the first roller 13, and then the limiting piece 22 is started to move to reset the limiting piece 22, so that the next polishing work can be carried out. The first polishing block 25 and the second polishing block 26 on the polishing device 2 are rotated to polish the first roller 13, and the first connecting piece 23, the polishing piece 24 and the second connecting piece 27 are arranged on the first polishing block 25 and the second polishing block 26,The first polishing block 25 and the second polishing block 26 are adapted to the concave-convex degree of the surface of the first roller 13, the limiting part 22 can clamp the plurality of first polishing blocks 25 and the second polishing blocks 26, the centers of the first polishing block 25 and the second polishing block 26 are in the same straight line, then the polishing can be carried out again, the deformation of the first polishing block 25 and the second polishing block 26 during polishing is prevented, the preliminary polishing is carried out, the surface of the first roller 13 tends to be smooth, and the problem of reduced polishing precision of the first polishing block 25 and the second polishing block 26 during the second polishing of the first roller 13 is prevented.

[0021] As shown in Figures 2 to 4 The limiting part 22 comprises a first threaded rod 222 rotatably installed on the first fixed block 21, the first threaded rod 222 is externally threaded and installed with a clamping moving plate 221, the clamping moving plate 221 is internally slidably installed with a motor connecting column 224, the motor connecting column 224 is rotatably installed in the first fixed block 21, the clamping moving plate 221 is rotatably installed with a limiting rotary block 223 at the side, the limiting rotary block 223 is concentric with the motor connecting column 224, the limiting rotary block 223 is slidably installed with the motor connecting column 224, the motor connecting column 224 penetrates the limiting rotary block 223 and is connected with the first connecting part 23, the limiting rotary block 223 is fixedly installed with a limiting protrusion 225 at the end, and the limiting protrusion 225 is used to contact the limiting transmission part 28.

[0022] It should be noted that the motor drives the motor connecting column 224 to rotate, which drives the limiting rotary block 223 and the first connecting part 23 to rotate, thereby driving the polishing part 24, the first polishing block 25 and the second polishing block 26 to rotate, achieving the effect of polishing, and the motor drives the limiting part 22 to rotate, which can make the two clamping moving plates 221 close to each other, and the limiting protrusion 225 at the end of the limiting rotary block 223 can extrude the limiting transmission part 28, thereby limiting the position of the first polishing block 25 and the second polishing block 26, and the first threaded rod 222 is provided with symmetrical threads, so that the rotation of the first threaded rod 222 can drive the clamping moving plates 221 to close to or away from each other.

[0023] As shown in Figures 4 to 5As shown, the first connecting piece 23 includes a first connecting block 231 fixedly installed at the end of the motor connecting column 224 away from the first fixed block 21, a second connecting block 232 rotatably installed inside the first connecting block 231, a first telescopic rod 233 fixedly installed at the side of the second connecting block 232, a third connecting block 235 fixedly installed at the end of the first telescopic rod 233, a first rotating column 236 rotatably installed inside the third connecting block 235, the first rotating column 236 rotatably installed inside the polishing piece 24, a first spring 234 fixedly installed at the side of the third connecting block 235, and the first spring 234 concentric with the first telescopic rod 233.

[0024] It should be noted that when the motor connecting column 224 rotates, the first connecting block 231 and the first telescopic rod 233 and the third connecting block 235 can be rotated, thereby driving the polishing piece 24 to rotate, and when the two limiting protrusions 225 are not in contact with the limiting transmission member 28, the first telescopic rod 233 can be telescopic, thereby allowing the first polishing block 25 and the second polishing block 26 to be staggered with each other, and still can polish the outer wall of the first roller 13, so that the first polishing block 25 can adapt to the curvature and shape of the surface of the first roller 13, preventing the problem of deformation of the first polishing block 25 and the second polishing block 26 during polishing.

[0025] As shown in the Figures 5 to 6 polishing piece 24 includes a second installation block 242 rotatably installed outside the first rotating column 236, a first installation plate 241 fixedly installed at the center of the second installation block 242, a second rotating column 244 rotatably installed at the center of the second installation block 242 away from the first connecting piece 23, and a first U-shaped block 243 fixedly installed at the end of the second rotating column 244.

[0026] It should be noted that the third connecting block 235 can drive the connected second installation block 242 and the first installation plate 241 to rotate, and a plurality of first polishing blocks 25 and second polishing blocks 26 are fixedly installed outside the first installation plate 241, so that the first polishing block 25 and the second polishing block 26 can be rotated, thereby achieving the effect of polishing, and the plurality of first polishing blocks 25 and second polishing blocks 26 are connected through the second connecting piece 27, and the second connecting piece 27 is connected to the side of the first U-shaped block 243, so that when the plurality of first polishing blocks 25 and second polishing blocks 26 are polished, the dislocation can be generated, which can adapt to the surface of the first roller 13 and reduce the problem of deformation of the surface of the first polishing block 25 and the second polishing block 26 during polishing.

[0027] As shown in the Figures 4 to 6As shown, the second connecting piece 27 comprises a second telescopic rod 271 fixedly installed at the side of the first U-shaped block 243, and the outer portion of the second telescopic rod 271 is provided with a second spring 272, and the end portion of the second spring 272 is fixedly installed with a third U-shaped block 273.

[0028] It should be noted that the rotation of the first U-shaped block 243 can drive the rotation of the second telescopic rod 271, and then drive the rotation of the third U-shaped block 273, thereby driving the rotation of the polishing member 24 connected to the third U-shaped block 273, and the polishing detection member 15 and the polishing member 24 are connected through the first connecting piece 23, and the first fixed block 21 and the polishing member 24 are connected through the first connecting piece 23, thereby improving the adaptability during polishing.

[0029] As shown in the first embodiment of the present application, Figures 3 to 4 As shown, the limiting transmission member 28 comprises a first sliding plate 281 slidingly installed in the interior of the first polishing block 25, the two ends of the first sliding plate 281 are fixedly installed with symmetrically arranged third springs 282, the center of the first sliding plate 281 is fixedly installed with a sliding rod 283, and the third springs 282 are concentric with the sliding rod 283.

[0030] It should be noted that rotating the first threaded rod 222 can drive the limiting protrusions 225 at the ends of the two limiting rotation blocks 223 to extrude the sliding rod 283, thereby causing the limiting protrusions 225 to slide in the interior of the first polishing block 25, so that the end portion of the sliding rod 283 can move towards the interior of the second polishing block 26, thereby causing the first polishing block 25 and the second polishing block 26 to be connected to each other and no longer produce a misalignment effect, and the first roller 13 can be polished again.

[0031] As shown in the first embodiment of the present application, Figure 3 As shown, the distance between the first threaded rod 222 and the motor connecting column 224 is greater than the diameter of the first polishing block 25.

[0032] It should be noted that the distance between the first threaded rod 222 and the motor connecting column 224 is greater than the diameter of the first polishing block 25, so that when the first polishing block 25 and the second polishing block 26 are deformed, they will not touch the first threaded rod 222, thereby improving the stability during operation.

[0033] As shown in the first embodiment of the present application, Figures 3 to 4 As shown, the diameter of the limiting protrusion 225 is the same as the diameter of the sliding rod 283, and the limiting protrusion 225 and the sliding rod 283 are always concentric when they rotate.

[0034] It needs to be explained that the diameter of the limiting protrusion 225 is the same as the diameter of the sliding rod 283, and the limiting protrusion 225 is always in concentric rotation with the sliding rod 283, so that when the limiting protrusion 225 moves towards the sliding rod 283, the sliding rod 283 can be driven to move towards the second polishing block 26, and the second polishing block 26 is internally provided with a sliding groove for providing sliding of the sliding rod 283, so that the sliding rod 283 can be in contact with the second polishing block 26.

[0035] As shown in Figures 3 to 4 two first polishing blocks 25 are provided between the second polishing block 26, and the second polishing block 26 is internally provided with a hole concentric with the sliding rod 283.

[0036] It needs to be explained that two first polishing blocks 25 are provided between the second polishing block 26, and the second polishing block 26 is internally provided with a hole concentric with the sliding rod 283, so that when the limiting protrusion 225 is moved, the first polishing block 25 and the second polishing block 26 can be limited.

[0037] As shown in Figures 4 to 6 the first polishing block 25 and the second polishing block 26 are connected through the second connecting piece 27, and the elastic force of the first spring 234 is the same as the elastic force of the second spring 272.

[0038] It needs to be explained that the first polishing block 25 and the second polishing block 26 are connected through the second connecting piece 27, and the elastic force of the first spring 234 is the same as the elastic force of the second spring 272, so that the first spring 234 and the second spring 272 have the same deformation size when they are stressed.

[0039] The above describes the embodiments of the present application, but the present application is not limited to the above specific embodiments, and the above specific embodiments are only illustrative and not restrictive, and those skilled in the art can make many forms under the inspiration of the present embodiment, which all belong to the protection of the present application.

Claims

1. A CNC roll grinder suitable for special steel, comprising a base (1), characterized in that: Two sides of the base (1) are provided with electric control boxes (11), the base (1) is placed with a processed first roller (13), two electric control boxes (11) are used for clamping the first roller (13), the base (1) is slidably provided with symmetrically arranged laser detection pieces (12), the laser detection pieces (12) are used for detecting the surface of the first roller (13), the side of the base (1) is fixedly provided with a polishing limiting plate (14), the top of the polishing limiting plate (14) is slidably provided with a polishing detection piece (15), the polishing detection piece (15) is provided with a polishing cooling device (16), the side of the polishing detection piece (15) is rotatably provided with a polishing device (2), the polishing device (2) is used for polishing the first roller (13), and the concave-convex degree of the surface of the first roller (13) is adapted; The polishing device (2) comprises a first fixed block (21), a limiting piece (22), a first connecting piece (23), a polishing piece (24), a first polishing block (25), a second polishing block (26), a second connecting piece (27) and a limiting transmission piece (28), the end of the polishing detection piece (15) is fixedly provided with the first fixed block (21), the end of the first fixed block (21) is rotatably provided with the first connecting piece (23), the inside of the first fixed block (21) is rotatably provided with the limiting piece (22), the end of the first connecting piece (23) is rotatably provided with the polishing piece (24), the second connecting piece (27) is rotatably provided on the polishing piece (24) away from the first connecting piece (23), the outside of the polishing piece (24) is provided with the first polishing block (25) and the second polishing block (26), a plurality of first polishing blocks (25) and second polishing blocks (26) are connected through the second connecting piece (27), the first polishing block (25) and the second polishing block (26) are used for polishing the surface of the first roller (13), the first polishing block (25) and the second polishing block (26) are used for adapting to the uneven surface of the first roller (13), and the first connecting piece (23) is used for limiting the position of the first polishing block (25) and the second polishing block (26).

2. The CNC roll grinder suitable for special steel materials according to claim 1, characterized in that: The limiting piece (22) comprises a first threaded rod (222) rotatably installed on the first fixed block (21), the outside of the first threaded rod (222) is threadedly installed with a clamping moving plate (221), the inside of the clamping moving plate (221) is slidably installed with a motor connecting column (224), the motor connecting column (224) is rotatably installed inside the first fixed block (21), the side of the clamping moving plate (221) is rotatably installed with a limiting rotary block (223), the limiting rotary block (223) is concentric with the motor connecting column (224), the limiting rotary block (223) is slidably installed with the motor connecting column (224), the motor connecting column (224) penetrates the limiting rotary block (223) and is connected with the first connecting piece (23), the end of the limiting rotary block (223) is fixedly installed with a limiting protrusion (225), and the limiting protrusion (225) is used to contact the limiting transmission piece (28).

3. The CNC roll grinder suitable for special steel materials according to claim 2, characterized in that: The first connecting piece (23) comprises a first connecting block (231) fixedly installed at the end of the motor connecting column (224) away from the first fixed block (21), a second connecting block (232) is rotatably installed inside the first connecting block (231), a first telescopic rod (233) is fixedly installed on the side of the second connecting block (232), a third connecting block (235) is fixedly installed at the end of the first telescopic rod (233), a first rotary column (236) is rotatably installed inside the third connecting block (235), the first rotary column (236) is rotatably installed inside the polishing piece (24), a first spring (234) is fixedly installed on the side of the third connecting block (235), and the first spring (234) is concentric with the first telescopic rod (233).

4. The CNC roll grinder suitable for special steel materials according to claim 3, characterized in that: The polishing piece (24) comprises a second installation block (242) rotatably installed outside the first rotary column (236), a first installation plate (241) is fixedly installed at the center of the second installation block (242), a second rotary column (244) is rotatably installed at the center of the outside of the second installation block (242) away from the first connecting piece (23), and a first U-shaped block (243) is fixedly installed at the end of the second rotary column (244).

5. A CNC roll grinder suitable for special steel materials as claimed in claim 4, wherein: The second connecting piece (27) comprises a second telescopic rod (271) fixedly installed on the side of the first U-shaped block (243), a second spring (272) is arranged outside the second telescopic rod (271), and a third U-shaped block (273) is fixedly installed at the end of the second spring (272).

6. A CNC roll grinder suitable for special steel materials as claimed in claim 5 wherein: The limiting transmission piece (28) comprises a first sliding plate (281) slidably installed inside the first polishing block (25), symmetrically arranged third springs (282) are fixedly installed at both ends of the first sliding plate (281), a sliding rod (283) is fixedly installed at the center of the first sliding plate (281), and the third springs (282) are concentric with the sliding rod (283).

7. A CNC roll grinder suitable for special steel materials as claimed in claim 6 wherein: The distance between the first threaded rod (222) and the motor connecting column (224) is greater than the diameter of the first polishing block (25).

8. A CNC roll grinder suitable for special steel materials as claimed in claim 7, wherein: The diameter of the limiting protrusion (225) is same as the diameter of the sliding rod (283), and the limiting protrusion (225) is always in concentricity when rotating with the sliding rod (283).

9. A CNC roll grinder suitable for special steel materials as claimed in claim 8, wherein: A second polishing block (26) is arranged between the two first polishing blocks (25), and a hole in concentricity with the sliding rod (283) is arranged in the second polishing block (26).

10. The numerically controlled roll grinder suitable for special steel materials according to claim 9, characterized in that: The first polishing block (25) and the second polishing block (26) are connected through the second connecting piece (27), and the elastic force of the first spring (234) is same as the elastic force of the second spring (272).

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