Outer circle grinding and polishing method and outer circle grinding and polishing equipment

Abstract

The invention discloses an outer circle grinding and polishing method and outer circle grinding and polishing equipment, and belongs to the technical field of polishing and polishing equipment. The main polishing and grinding machine carries out polishing and grinding from one end to the other end of the circular workpiece, and roughness detection is carried out on a polished and ground area; and the auxiliary polishing and grinding machine conducts supplementary polishing on the polished and ground area with the roughness larger than the preset value, and roughness detection is conducted in the supplementary polishing process till the roughness is smaller than the preset value. The equipment comprises a supporting roller seat, a main polishing and grinding machine and an auxiliary polishing and grinding machine. Supporting roller pairs are arranged on the supporting roller base, and the main polishing and grinding machine and the auxiliary polishing and grinding machine are arranged on the two sides of the supporting roller base respectively. Each of the main polishing and grinding machine and the auxiliary polishing and grinding machine comprises a guide rail, a roughness detector, a positioning device, a polishing and grinding mechanism and a moving mechanism. In the one-way main polishing process of the main polishing and grinding machine, the polished and ground area is detected in real time, the area which does not reach the polishing and grinding standard is subjected to supplementary polishing in a targeted mode, repeated machining is avoided, the machining time is shortened, the machining efficiency is improved, and waste of grinding materials, energy and other resources is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of polishing equipment, in particular to an external cylindrical polishing method and external cylindrical polishing equipment. Background Art

[0002] In the field of mechanical processing, polishing the outer walls of circular workpieces such as round tubes and cylinders is a common processing procedure. External cylindrical grinding and polishing equipment usually uses the method of self-rotation of the circular workpiece and the movement of the grinding and polishing device along the axial direction of the workpiece for polishing. However, due to factors such as abrasive wear and equipment vibration, it is easy for certain areas of the workpiece surface to not be polished properly during the polishing process, affecting the surface quality. In order to ensure uniform polishing, bidirectional polishing is usually required, that is, the grinding and polishing device moves from the head end to the tail end of the workpiece once, and then moves from the tail end to the head end once. Bidirectional polishing means that the areas that have met the requirements will also be repeatedly processed at the same time, which lacks specificity. It is not only time-consuming and has low processing efficiency, but also causes waste of resources such as abrasives and energy. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned technical problems and provide an external cylindrical grinding and polishing method and external cylindrical grinding and polishing equipment. During the one-way main polishing process of the main polishing machine, real-time detection of the polished area is performed, and the area that does not meet the polishing standard is re-polished in a targeted manner. The area that meets the standard will not be processed repeatedly, thereby saving processing time, improving processing efficiency, and reducing the waste of resources such as abrasives and energy.

[0004] To achieve the above object, the present invention provides the following solution: The present invention discloses a cylindrical grinding and polishing method, comprising the following steps:

[0005] Drive the circular workpiece to rotate horizontally around its own central axis;

[0006] The main polishing machine polishes from one end of the circular workpiece to the other end, and performs roughness inspection on the polished area while polishing;

[0007] The auxiliary polishing machine performs re-polishing on the polished area whose roughness is greater than a preset value, and performs roughness detection on the re-polished area during the re-polishing process until the roughness of the re-polished area reaches below the preset value.

[0008] Preferably, the method further comprises the following steps:

[0009] During the polishing process of the main polishing machine, the polishing speed of the main polishing machine, the moving speed of the main polishing machine and / or the rotation speed of the circular workpiece are adjusted according to the difference of the roughness greater than the preset value.

[0010] Also disclosed is an external cylindrical grinding and polishing equipment, comprising a supporting roller seat, a main polishing machine and an auxiliary polishing machine; the supporting roller seat is provided with a driving mechanism and a pair of supporting rollers for supporting the external cylindrical surface of a circular workpiece, the pair of supporting rollers are rotated by the driving mechanism, the rotation axis of the pair of supporting rollers is horizontally arranged, the main polishing machine and the auxiliary polishing machine are arranged on both sides of the supporting roller seat; the main polishing machine and the auxiliary polishing machine both comprise a guide rail, a roughness detector, a positioning device, a polishing mechanism movably arranged on the guide rail and a moving mechanism for driving the polishing mechanism to move, the extension direction of the guide rail is parallel to the rotation axis direction of the pair of supporting rollers, the roughness detector of the main polishing machine is located behind the working forward direction of the polishing mechanism of the main polishing machine, the positioning device of the main polishing machine is used to position the detection area of ​​the roughness detector of the main polishing machine, the positioning device of the auxiliary polishing machine is used to position the polishing mechanism of the auxiliary polishing machine, and the roughness detector of the auxiliary polishing machine is used to detect the area being polished.

[0011] Preferably, the moving mechanism comprises a traveling vehicle arranged on the guide rail and a traveling mechanism for driving the traveling vehicle to move, the polishing mechanism is mounted on the traveling vehicle, and the traveling mechanism is a driving belt or a driving chain.

[0012] Preferably, the polishing mechanism comprises a polishing belt and an angle adjustment mechanism, a fixing portion of the angle adjustment mechanism is mounted on the traveling vehicle, and the polishing belt is mounted on an adjusting portion of the angle adjustment mechanism.

[0013] Preferably, the polishing belt includes a sanding belt body and a U-shaped frame, the opening of the U-shaped frame faces the supporting roller seat, the web of the U-shaped frame is provided with a driving sanding belt wheel, the two arms of the U-shaped frame are arranged up and down, and each of the two arms of the U-shaped frame is provided with a driven sanding belt wheel, and the sanding belt body is sleeved on the driving sanding belt wheel and the driven sanding belt wheel.

[0014] Preferably, the angle adjustment mechanism includes an adjustment base, an articulated rod and an adjustment telescopic cylinder, the adjustment base has an inclined top inclined toward the support roller seat, the articulated rod is attached to and fixed on the inclined top, one end of the articulated rod is hinged to an end of the lower arm of the U-shaped frame close to the opening, the other end of the articulated rod is hinged to a cylinder body of the adjustment telescopic cylinder, and the piston of the adjustment telescopic cylinder is hinged to an end of the lower arm of the U-shaped frame close to the web.

[0015] Preferably, one end of the upper arm of the U-shaped frame close to the web is hinged to the web of the U-shaped frame, a mounting rod is provided on the web of the U-shaped frame, a tensioning and telescopic cylinder is provided on the mounting rod, a cylinder body of the tensioning and telescopic cylinder is hinged to the mounting rod, and a piston of the tensioning and telescopic cylinder is hinged to the upper arm of the U-shaped frame.

[0016] Preferably, the positioning device includes a laser emitter and a grating scale installed on the guide rail, the laser emitter and roughness detector of the main polishing machine are arranged up and down and are located on the same vertical center line, the laser emitter, roughness detector and abrasive belt body of the auxiliary polishing machine are located on the same vertical center plane, and the laser emitter and non-contact roughness detector of the auxiliary polishing machine are installed on the adjustment base.

[0017] Preferably, a secondary polishing machine is also included, which includes a positioning device, a canvas belt polishing mechanism and a traveling mechanism. The canvas belt polishing mechanism is arranged on the guide rail of the main polishing machine, the traveling mechanism is used to drive the canvas belt polishing mechanism to move, and the positioning device is used to position the canvas belt polishing mechanism.

[0018] Compared with the prior art, the present invention has achieved the following technical effects:

[0019] In the present invention, during the one-way main polishing process of the main polishing machine, the polished area is detected in real time, and then the area that does not meet the polishing standard is re-polished in a targeted manner. There is no need to perform two-way polishing, and the area that has met the requirements does not need to be processed again, thereby saving processing time, improving processing efficiency, and reducing the waste of resources such as abrasives and energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the analysis of these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the external cylindrical grinding and polishing equipment in the embodiment of the present invention;

[0022] Figure 2 It is a front view structural schematic diagram of the external cylindrical grinding and polishing equipment in an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the top view of the cylindrical grinding and polishing equipment in an embodiment of the present invention;

[0024] Figure 4 It is a right view structural schematic diagram of the external cylindrical grinding and polishing equipment (without grating ruler) in the embodiment of the present invention;

[0025] Figure 5 It is a left-side structural schematic diagram of an external cylindrical grinding and polishing device (without grating ruler) in an embodiment of the present invention;

[0026] Figure 6 for Figure 1 A partial enlarged schematic diagram of

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the cylindrical grinding and polishing equipment (including the secondary polishing machine) in the embodiment of the present invention.

[0028] Explanation of the reference numerals in the accompanying drawings: 1. Support roller seat; 2. Support pair of rollers; 3. Main guide rail; 4. Main roughness detector; 5. Main polishing mechanism; 6. Main grating scale; 7. Main laser emitter; 8. Assistant guide rail; 9. Auxiliary roughness detector; 10. Auxiliary polishing mechanism; 11. Auxiliary grating scale; 12. Auxiliary laser emitter; 13. Traveling vehicle; 14. Traveling wheel; 15. Chain; 16. Sprocket; 17. Driving motor; 18. Abrasive belt body; 19. U-shaped frame; 20. Adjustment base; 21. Articulated rod; 22. Adjustment telescopic cylinder; 23. Mounting rod; 24. Elasticity and tension telescopic cylinder; 25. Active abrasive belt wheel; 26. Driven abrasive belt wheel; 27. Round workpiece; 28. Canvas belt polishing mechanism; 29. ​​Secondary laser emitter. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments analyzed and obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The purpose of the present invention is to provide an external cylindrical grinding and polishing method and external cylindrical grinding and polishing equipment, which can detect the polished area in real time during the unidirectional main polishing process of the main polishing machine, and then carry out targeted re-polishing on the area that does not meet the polishing standards, without the need for bidirectional polishing, and the area that has met the requirements does not need to be processed again, thereby saving processing time, improving processing efficiency, and reducing the waste of resources such as abrasives and energy.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1

[0033] This embodiment provides a method for external cylindrical grinding and polishing. Figures 1 to 7 As shown, the following steps are included:

[0034] Drive the circular workpiece 27 (circular tube or cylinder) to rotate horizontally around its own central axis;

[0035] The main polishing machine polishes the circular workpiece 27 from one end to the other, and performs a roughness test on the polished area while polishing;

[0036] The auxiliary polishing machine performs re-polishing on the polished area whose roughness is greater than a preset value, and performs roughness detection on the re-polished area during the re-polishing process until the roughness of the re-polished area reaches below the preset value (including the preset value).

[0037] In one embodiment, if Figures 1 to 7 As shown, the following steps are also included:

[0038] According to the difference of the roughness greater than the preset value during the polishing process of the main polisher, the polishing speed of the main polisher, the moving speed of the main polisher and / or the rotation speed of the circular workpiece 27 are adjusted.

[0039] In one embodiment, if Figures 1 to 7 As shown, the following steps are also included:

[0040] According to the difference of the roughness greater than the preset value during the polishing process of the auxiliary polishing machine, the polishing speed of the auxiliary polishing machine is adjusted as needed.

[0041] Example 2

[0042] This embodiment provides an external cylindrical grinding and polishing device, which can be used for the external cylindrical grinding and polishing method in embodiment 1, and can also be applied to other external cylindrical grinding and polishing methods, such as Figures 1 to 7 As shown, it includes a support roller seat 1, a main polishing machine and an auxiliary polishing machine. A driving mechanism and a pair of support rollers 2 are provided on the support roller seat 1. The rotation axis of the pair of support rollers 2 is horizontally arranged. The outer cylindrical surface of the circular workpiece 27 is placed on the pair of support rollers 2. The circular workpiece 27 is in a horizontal state as a whole. The central axis of the circular workpiece 27 is parallel to the rotation axis of the pair of support rollers 2. The driving mechanism is used to drive each roller in the pair of support rollers 2 to rotate, so as to drive the circular workpiece 27 to rotate clockwise or counterclockwise around its own central axis. The number of support roller seats 1 and pair of support rollers 2 can be set as needed. For example, one support roller seat 1 is provided, and one support roller seat 1 is provided with one or more pairs of support rollers 2. Each pair of support rollers 2 includes two rods for supporting the circular workpiece 27. For example, two or more (including two) support roller seats 1 are provided, and each support roller seat 1 is provided with at least one pair of support rollers 2. Each pair of support rollers 2 includes two rods.

[0043] The main polishing machine and the auxiliary polishing machine are arranged on both sides of the supporting roller seat 1. The main polishing machine includes a main guide rail 3, a main roughness detector 4, a main positioning device, a main polishing mechanism 5 and a main moving mechanism. The extension direction of the main guide rail 3 is parallel to the rotation axis direction of the supporting roller pair 2. The main polishing mechanism 5 is movably arranged on the main guide rail 3, and the main moving mechanism is used to drive the main polishing mechanism 5 to move. The main roughness detector 4 is located behind the working forward direction of the main polishing mechanism 5, and the main positioning device is used to position the detection area of ​​the main roughness detector 4. The auxiliary polishing machine includes an auxiliary guide rail 8, an auxiliary roughness detector 9, an auxiliary positioning device, an auxiliary polishing mechanism 10 and an auxiliary moving mechanism. The extension direction of the auxiliary guide rail 8 is parallel to the rotation axis direction of the supporting roller pair 2. The auxiliary polishing mechanism 10 is movably arranged on the auxiliary guide rail 8, and the auxiliary moving mechanism is used to drive the auxiliary polishing mechanism 10 to move. The auxiliary positioning device is used to position the auxiliary polishing mechanism 10, and the auxiliary roughness detector 9 is used to detect the area being polished.

[0044] Working principle:

[0045] First, the circular workpiece 27 is placed on the supporting roller pair 2, and the driving mechanism is started to rotate the supporting roller pair 2 to drive the circular workpiece 27 to rotate.

[0046] Then, the main polishing machine is started, and the main polishing mechanism 5 moves along one end of the main guide rail 3 to the other end, thereby realizing polishing from one end to the other end of the circular workpiece 27. During the movement of the main polishing mechanism 5, the main roughness detector 4 will perform roughness detection on the polished area. When the main roughness detector 4 finds that the roughness of the polished area is greater than the preset roughness value, the main positioning device will locate the area.

[0047] Then, the auxiliary polishing machine is started. According to the position information of the auxiliary positioning device and the area positioned by the main positioning device, the auxiliary polishing mechanism 10 moves to the area positioned by the main positioning device, and performs re-polishing on the polished area whose roughness is greater than the preset value. During the re-polishing process, the auxiliary roughness detector 9 will perform roughness detection on the area being re-polished until the re-polishing reaches below the preset value (including the preset value), and the auxiliary polishing mechanism 10 stops re-polishing.

[0048] In one embodiment, if Figures 1 to 7 As shown, the driving mechanism includes a rotating motor and a reduction gear, and the rotating motor is connected to each roller of the supporting roller pair 2 through the reduction gear to drive each roller to rotate separately. The driving mechanism can be installed in the supporting roller seat 1 or outside the supporting roller seat 1, and can be set as needed.

[0049] In one embodiment, if Figures 1 to 7As shown, the moving mechanism includes a traveling vehicle 13 and a traveling mechanism. The traveling vehicle 13 is provided on both the main rail 3 and the auxiliary rail 8, and the traveling vehicle 13 is moved by the traveling mechanism. The main polishing mechanism 5 is installed on the traveling vehicle 13 on the main rail 3, and the auxiliary polishing mechanism 10 is installed on the traveling vehicle 13 on the auxiliary rail 8. The traveling mechanism is a driving belt or a driving chain. The driving chain includes a chain 15, a transmission shaft, a sprocket 16 and a driving motor 17. Two transmission shafts are provided between the two monorails of the guide rail. The two transmission shafts are respectively located at the two ends of the guide rail. Two sprockets 16 are provided on each transmission shaft. The two chains 15 are sleeved on the sprockets 16 of the two transmission shafts. The two chains 15 are parallel to each other. The bottom of the traveling vehicle 13 is fixedly connected to the two chains 15. The output shaft of the driving motor 17 is coaxially fixedly connected to the transmission shaft. The driving motor 17 is installed on the guide rail. The output shaft of the driving motor 17 rotates to drive the chain 15 to move, thereby realizing the movement of the traveling vehicle 13. The drive belt includes a belt, a transmission shaft, a pulley and a belt motor. The configuration method is roughly the same as that of the drive chain, so no further elaboration is given here.

[0050] In one embodiment, if Figures 1 to 7 As shown, the guide rail is mainly made of two channel steels, the notches of the two channel steels are opposite, and the notches of the two channel steels are welded together by steel components. The traveling vehicle 13 is provided with traveling wheels 14, each of which includes a set of two wheels arranged up and down, and the upper and lower wheels are clamped on the upper and lower surfaces of the flange plate located above the channel steel to ensure that the traveling wheels 14 will not separate from the flange plate during the traveling process, so that the traveling vehicle 13 will not separate from the guide rail.

[0051] In one embodiment, if Figures 1 to 7 As shown, the main polishing mechanism 5 and the auxiliary polishing mechanism 10 both include a polishing belt and an angle adjustment mechanism, the fixed portion of the angle adjustment mechanism is mounted on the traveling vehicle 13, and the polishing belt is mounted on the adjustment portion of the angle adjustment mechanism. Compared with the polishing wheel, the polishing belt can be used for polishing the outer wall of large and small round steel or round tubes, while the polishing wheel can only be used for small round steel or round tubes. The angle of the polishing belt can be adjusted by the angle adjustment mechanism to achieve whether the polishing belt contacts the circular workpiece 27 and the contact depth.

[0052] In one embodiment, if Figures 1 to 7 As shown, the polishing belt includes a belt body 18 and a U-shaped frame 19, the opening of the U-shaped frame 19 faces the supporting roller seat 1, the web of the U-shaped frame 19 is provided with a driving belt wheel 25, the two arms of the U-shaped frame 19 are arranged up and down, and each of the two arms of the U-shaped frame 19 is provided with a driven belt wheel 26, the driving belt wheel 25 and the two driven belt wheels 26 are arranged along the three end points of a triangle, and the belt body 18 is sleeved on the driving belt wheel 25 and the two driven belt wheels 26 to form a triangular shape.

[0053] In one embodiment, if Figures 1 to 7 As shown, the angle adjustment mechanism includes an adjustment base 20, an articulated rod 21 and an adjustment telescopic cylinder 22. The adjustment base 20 has an inclined top inclined toward the support roller seat 1. The articulated rod 21 is attached to and fixed on the inclined top, so that the articulated rod 21 also tilts toward the support roller seat 1.

[0054] One end of the hinged rod 21 is hinged to the end of the lower arm of the U-shaped frame 19 near the opening, and the other end of the hinged rod 21 is hinged to the cylinder body of the adjustable telescopic cylinder 22. The piston of the adjustable telescopic cylinder 22 is hinged to the end of the lower arm of the U-shaped frame 19 near the web. The piston of the adjustable telescopic cylinder 22 is extended and retracted, so that the U-shaped frame 19 can rotate around the end hinged to the hinged rod 21, thereby achieving angle adjustment. The adjustable telescopic cylinder 22 can be a hydraulic cylinder or an electric cylinder.

[0055] In one embodiment, if Figures 1 to 7 As shown, one end of the upper arm of the U-shaped frame 19 near the web is hinged to the web of the U-shaped frame 19, a mounting rod 23 is provided on the web of the U-shaped frame 19, a tensioning and telescopic cylinder 24 is provided on the mounting rod 23, a cylinder body of the tensioning and telescopic cylinder 24 is hinged to the mounting rod 23, and a piston of the tensioning and telescopic cylinder 24 is hinged to the upper arm of the U-shaped frame 19. The piston of the tensioning and telescopic cylinder 24 is extended to lift the upper arm of the U-shaped frame 19, thereby lifting the driven abrasive belt wheel 26 at the upper part, so that the abrasive belt body 18 is tightened, and vice versa, the piston of the tensioning and telescopic cylinder 24 is retracted, and the abrasive belt body 18 becomes loose.

[0056] In one embodiment, if Figures 1 to 7 As shown, the roughness detector is a non-contact roughness detector. For example, the main roughness detector 4 and the auxiliary roughness detector 9 are both laser roughness detectors, and the dotted line in the figure is a laser beam.

[0057] In one embodiment, if Figures 1 to 7 As shown, the main positioning device includes a main grating scale 6 and a main laser emitter 7, and the main grating scale 6 is installed on the main guide rail 3. The main laser emitter 7 and the main roughness detector 4 are arranged up and down and are located on the same vertical center line. The main laser emitter 7 will hit the main grating scale 6 with a laser beam in real time to locate the detection area of ​​the main roughness detector 4. The auxiliary positioning device includes an auxiliary grating scale 11 and an auxiliary laser emitter 12, and the auxiliary grating scale 11 is installed on the auxiliary guide rail 8. The auxiliary laser emitter 12, the auxiliary roughness detector 9 and the abrasive belt body 18 are located on the same vertical center plane to position the abrasive belt body 18, and the auxiliary roughness detector 9 performs real-time detection of the roughness of the area where the abrasive belt body 18 is being polished. The auxiliary laser emitter 12 and the auxiliary roughness detector 9 are installed on the adjustment base 20.

[0058] In one embodiment, if Figures 1 to 7As shown, it also includes a control device, through which the above-mentioned devices and components are coordinated and controlled to realize automatic polishing, positioning and supplementary polishing. The moving speed and polishing speed of the main polishing mechanism 5 can be pre-input through the control device. The control device will receive and record the positioning information of the main positioning device, and then drive the auxiliary polishing mechanism 10 to move according to the positioning information of the auxiliary positioning device. At the same time, according to the detection values ​​of the main roughness detector 4 and the auxiliary roughness detector 9, the moving speed, polishing speed of the main polishing mechanism 5, the rotation speed of the supporting roller 2, and the polishing speed of the auxiliary polishing mechanism 10, etc. are adjusted. The control device adopts a PLC controller.

[0059] In one embodiment, if Figures 1 to 7 As shown, the abrasive belt body 18 can be flexibly disassembled for replacement and maintenance. Abrasive belt bodies 18 with corresponding meshes can also be used according to different polishing requirements, but it should be noted that the mesh of the abrasive belt body 18 of the auxiliary polishing mechanism 10 is not less than the mesh of the abrasive belt of the main polishing mechanism 5.

[0060] In one embodiment, if Figures 1 to 7 As shown, it also includes a secondary polishing machine, which includes a positioning device, a canvas belt polishing mechanism 28 and a travel mechanism. The canvas belt polishing mechanism 28 is arranged on the main guide rail 3. The travel mechanism is used to drive the canvas belt polishing mechanism 28 to move along the main guide rail 3. The positioning device is used to position the canvas belt polishing mechanism 28. The canvas belt polishing mechanism 28 can remove the powder remaining on the outer cylindrical surface of the circular workpiece 27 after polishing. The secondary polishing machine is also controlled by the control device. When the circular workpiece 27 is made of metal material, after the circular workpiece 27 is polished, the outer cylindrical surface of the circular workpiece 27 will be attached with tiny particles of ash produced by the polishing residue. This part of the ash will be embedded in the metal surface, but it is invisible to the naked eye. If it is not cleaned in time, it is very easy to rust after being wet. This is caused by electrochemical corrosion. After being wiped off by the canvas belt polishing mechanism 28, the influence caused by the presence of floating ash in the air can be ignored.

[0061] In one embodiment, if Figures 1 to 7 As shown, the traveling mechanism includes a traveling vehicle 13, and the traveling vehicle 13 is driven by a driving belt or a driving chain. The canvas belt polishing mechanism 28 is installed on the traveling vehicle 13, and the traveling vehicle 13 of the traveling mechanism is set on the main rail 3 and is located behind the working direction of the main polishing mechanism 5. Driving belt or driving chain. For example, the driving chain includes a chain 15, a transmission shaft, a sprocket 16 and a driving motor 17. The driving chain used by the canvas belt polishing mechanism 28 and the driving chain of the main polishing mechanism 5 are two independent sets.

[0062] In one embodiment, if Figures 1 to 7As shown, the canvas belt polishing mechanism 28 includes a polishing belt and an angle adjustment mechanism. The polishing belt includes a belt body 18 and a U-shaped frame 19. The belt body 18 is a canvas belt. The opening of the U-shaped frame 19 faces the support roller seat 1. The web of the U-shaped frame 19 is provided with a driving belt wheel 25. The two arms of the U-shaped frame 19 are arranged up and down. A driven belt wheel 26 is provided on each of the two arms of the U-shaped frame 19. The driving belt wheel 25 and the two driven belt wheels 26 are arranged along the three ends of a triangle. The belt body 18 is sleeved on the driving belt wheel 25 and the two driven belt wheels 26 to form a triangle shape. The angle adjustment mechanism includes an adjustment base 20, a hinged rod 21 and an adjustment telescopic cylinder 22. The adjustment base 20 has an inclined top inclined toward the support roller seat 1. The hinged rod 21 is attached to and fixed on the inclined top, so that the hinged rod 21 is also inclined toward the support roller seat 1. One end of the hinged rod 21 is hinged to the end of the lower arm of the U-shaped frame 19 near the opening, and the other end of the hinged rod 21 is hinged to the cylinder body of the adjusting telescopic cylinder 22. The piston of the adjusting telescopic cylinder 22 is hinged to the end of the lower arm of the U-shaped frame 19 near the web. The piston of the adjusting telescopic cylinder 22 is extended and retracted, so that the U-shaped frame 19 can rotate around the end hinged to the hinged rod 21, thereby achieving angle adjustment. The adjusting telescopic cylinder 22 can be a hydraulic cylinder or an electric cylinder. The end of the upper arm of the U-shaped frame 19 near the web is hinged to the web of the U-shaped frame 19. A mounting rod 23 is provided on the web of the U-shaped frame 19. A tensioning telescopic cylinder 24 is provided on the mounting rod 23. The cylinder body of the tensioning telescopic cylinder 24 is hinged to the mounting rod 23. The piston of the tensioning telescopic cylinder 24 is hinged to the upper arm of the U-shaped frame 19. The piston of the tension and telescopic cylinder 24 extends to lift the upper arm of the U-shaped frame 19, thereby lifting the driven abrasive belt wheel 26 located above, so that the abrasive belt body 18 is tightened. Conversely, the piston of the tension and telescopic cylinder 24 retracts, and the abrasive belt body 18 becomes loose.

[0063] In one embodiment, if Figures 1 to 7 As shown, the positioning device includes a secondary laser emitter 29, which is mounted on the adjustment base 20 and is used to emit laser to the main grating scale 6. The secondary laser emitter 29 and the abrasive belt body 18 of the canvas belt polishing mechanism 28 are located on the same vertical center plane to position the abrasive belt body 18.

[0064] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A cylindrical grinding and polishing method, characterized in that: The following steps are involved: Drive the circular workpiece to rotate horizontally around its own central axis; The main polishing machine polishes from one end of the circular workpiece to the other end, and performs roughness inspection on the polished area while polishing; The auxiliary polishing machine performs re-polishing on the polished area whose roughness is greater than a preset value, and performs roughness detection on the re-polished area during the re-polishing process until the roughness of the re-polished area reaches below the preset value.

2. The cylindrical grinding and polishing method according to claim 1, characterized in that: The following steps are also included: During the polishing process of the main polishing machine, the polishing speed of the main polishing machine, the moving speed of the main polishing machine and / or the rotation speed of the circular workpiece are adjusted according to the difference of the roughness greater than the preset value.

3. An external cylindrical grinding and polishing device, characterized in that: The invention comprises a supporting roller seat, a main polishing machine and an auxiliary polishing machine; the supporting roller seat is provided with a driving mechanism and a pair of supporting rollers for supporting the outer cylindrical surface of a circular workpiece, the pair of supporting rollers are rotated by the driving mechanism, the rotation axis of the pair of supporting rollers is arranged horizontally, the main polishing machine and the auxiliary polishing machine are arranged on both sides of the supporting roller seat; the main polishing machine and the auxiliary polishing machine both comprise a guide rail, a roughness detector, a positioning device, a polishing mechanism movably arranged on the guide rail and a moving mechanism for driving the polishing mechanism to move, the extension direction of the guide rail is parallel to the rotation axis direction of the pair of supporting rollers, the roughness detector of the main polishing machine is located behind the working forward direction of the polishing mechanism of the main polishing machine, the positioning device of the main polishing machine is used to position the detection area of ​​the roughness detector of the main polishing machine, the positioning device of the auxiliary polishing machine is used to position the polishing mechanism of the auxiliary polishing machine, and the roughness detector of the auxiliary polishing machine is used to detect the area being supplemented with polishing.

4. The cylindrical grinding and polishing equipment according to claim 3, characterized in that: The moving mechanism comprises a traveling vehicle arranged on the guide rail and a traveling mechanism for driving the traveling vehicle to move; the polishing mechanism is installed on the traveling vehicle, and the traveling mechanism is a driving belt or a driving chain.

5. The cylindrical grinding and polishing equipment according to claim 4, characterized in that: The polishing mechanism comprises a polishing belt and an angle adjustment mechanism, a fixing portion of the angle adjustment mechanism is mounted on the traveling vehicle, and the polishing belt is mounted on an adjustment portion of the angle adjustment mechanism.

6. The cylindrical grinding and polishing equipment according to claim 5, characterized in that: The polishing belt includes a belt body and a U-shaped frame, the opening of the U-shaped frame faces the supporting roller seat, a driving belt wheel is provided on the web of the U-shaped frame, two arms of the U-shaped frame are arranged up and down, a driven belt wheel is provided on each of the two arms of the U-shaped frame, and the belt body is sleeved on the driving belt wheel and the driven belt wheel.

7. The cylindrical grinding and polishing equipment according to claim 6, characterized in that: The angle adjustment mechanism includes an adjustment base, an articulated rod and an adjustment telescopic cylinder. The adjustment base has an inclined top inclined toward the support roller seat. The articulated rod is attached to and fixed on the inclined top. One end of the articulated rod is hinged to an end of the lower arm of the U-shaped frame close to an opening. The other end of the articulated rod is hinged to a cylinder body of the adjustment telescopic cylinder. The piston of the adjustment telescopic cylinder is hinged to an end of the lower arm of the U-shaped frame close to the web.

8. The cylindrical grinding and polishing equipment according to claim 7, characterized in that: The end of the upper support arm of the U-shaped frame close to the web is hinged to the web of the U-shaped frame, a mounting rod is provided on the web of the U-shaped frame, a tensioning and telescopic cylinder is provided on the mounting rod, a cylinder body of the tensioning and telescopic cylinder is hinged to the mounting rod, and a piston of the tensioning and telescopic cylinder is hinged to the upper support arm of the U-shaped frame.

9. The cylindrical grinding and polishing equipment according to claim 8, characterized in that: The positioning device includes a laser emitter and a grating ruler installed on the guide rail. The laser emitter and roughness detector of the main polishing machine are arranged up and down and are located on the same vertical center line. The laser emitter, roughness detector and abrasive belt body of the auxiliary polishing machine are located on the same vertical center plane. The laser emitter and non-contact roughness detector of the auxiliary polishing machine are installed on the adjustment base.

10. The cylindrical grinding and polishing equipment according to claim 3, characterized in that: It also includes a secondary polishing machine, which includes a positioning device, a canvas belt polishing mechanism and a traveling mechanism. The canvas belt polishing mechanism is arranged on the guide rail of the main polishing machine, the traveling mechanism is used to drive the canvas belt polishing mechanism to move, and the positioning device is used to position the canvas belt polishing mechanism.

Images