Support Roller Simulation On-line Turning Device and Turning Method

Abstract

The present invention discloses a device for simulating online turning of a supporting wheel and a turning method. The device includes a bed, a bed body, a longitudinal guide pair, a tool holder assembly, an alignment tool, a transmission device and a longitudinal feed device; the transmission shaft on the transmission device is concentrically arranged with the supporting wheel shaft of the supporting wheel to be processed, and the supporting wheel shaft is installed on the bed through a symmetrical support seat; the column installed on the bed is equipped with a bed plate through an adjusting nut, and the bed plate is equipped with a longitudinal guide pair; a slide plate is installed on the longitudinal guide pair, and a tool holder assembly is installed on the slide plate, and a turning tool and a dial indicator are respectively arranged on the tool holder assembly; the alignment tool includes a square and an I-shaped flat ruler. The supporting wheel is installed on the symmetrical support seat to replace the clamping device. Compared with clamping on a lathe in a positioning manner of a combination of a center hole or an end face and a bearing position, the radial runout error is reduced, and the workpiece clamping error is reduced; an I-shaped flat ruler is used to simulate the axial generatrix of the supporting wheel to improve the turning accuracy; it is simple to make, easy to move, and convenient for on-site turning.

Description

Technical Field

[0001] The present invention relates to the field of lathe processing devices, and particularly to a supporting wheel simulation on-line turning device and a turning method. Background Art

[0002] Horizontal rotary drying equipment is a key device in cement, non-ferrous metals, metallurgy, refractories, and chemical production. Its supporting device mainly adopts a supporting wheel assembly, which consists of a supporting wheel, bearings, bearing seats, etc. During long-term continuous operation, the supporting wheel supporting the furnace body rotates under large axial and radial loads. After the outer surface of the supporting wheel is worn, the surface quality, shape, and accuracy decrease, resulting in increased vibration during equipment operation, affecting the furnace adjustment effect, reducing the equipment operation efficiency, and increasing the surface wear of the girth gear. Therefore, repair is required.

[0003] Conventional repair methods involve using the furnace jacking technology to replace the new supporting wheel assembly. After the removed supporting wheel assembly is disassembled, the supporting wheel is installed on a lathe for processing. Generally, repair units without processing capabilities need to subcontract the processing, which is costly and time-consuming. Another method is to install turning equipment on-site for on-line turning repair. During the on-line turning repair process, the size of the supporting wheel changes, causing the furnace body to move up and down erratically, prone to mechanical failures, and reducing the production operation rate. Summary of the Invention

[0004] The present invention aims to overcome the deficiencies of the above-mentioned existing technologies, and provides a turning device and a turning method that can not only ensure the processing accuracy but also do not require a large lathe, thereby reducing the time and cost of subcontracting repairs.

[0005] To achieve this technical purpose, the present invention adopts the following scheme: A supporting wheel simulation on-line turning device includes a bed base, a longitudinal guide rail pair, a tool rest assembly, an alignment tool, a transmission device, and a longitudinal feed device; the transmission shaft on the transmission device is concentrically arranged with the supporting wheel shaft of the to-be-processed supporting wheel. The supporting wheel shaft is installed on a bearing seat, the bearing seat is installed on an equal-height support seat, and the equal-height support seat is installed on the bed base; a column is installed on the bed base, a bed plate is installed on the column through an adjusting nut, a longitudinal guide rail pair is installed on the bed plate, a carriage is installed on the longitudinal guide rail pair, and a longitudinal feed device is installed on the carriage; the carriage is fixedly connected to the tool rest assembly, and a turning tool and a dial indicator are respectively arranged on the tool rest assembly; the alignment tool includes a right-angle ruler and an I-shaped flat ruler. The right-angle ruler is inlaid with a strong magnet, the I-shaped flat ruler is vertically fixed on the right-angle ruler, the right-angle ruler is adsorbed on the end face of the supporting wheel, and the I-shaped flat ruler is tangent to the outer circumference of the supporting wheel.

[0006] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0007] 1. The on-line turning device for idler wheels provided by the present invention utilizes the principle of high self-turning accuracy. The idler wheel assembly is installed on an equal-height support base, which serves as a component of the turning device and replaces the clamping device. Compared with the clamping method using the positioning method of combining the center hole or end face with the bearing position on a lathe, the radial runout error is small, and the workpiece clamping error is reduced.

[0008] 2. The on-line turning device for idler wheels realizes turning of idler wheels with different diameters and shaft lengths or rotating parts with similar structures by combining the horizontal movement of the equal-height support base on the bed base and the up-and-down movement of the bed plate along the column. It is convenient to be moved and installed at the equipment site for turning operations without delaying the on-site production.

[0009] 3. The on-line turning device for idler wheels is simple to manufacture, has low investment, and is energy-saving and environmentally friendly.

[0010] The preferred technical solution of the present invention is as follows:

[0011] Long strip holes penetrating the column are provided on the bed plate, and nuts connected to the column are respectively installed on the upper and lower surfaces of the bed plate.

[0012] The idler wheel shaft is connected to the transmission device through a magnetic coupling.

[0013] The magnetic coupling is provided with a U-shaped connecting piece, and a permanent magnet chuck is installed in the U-shaped connecting piece.

[0014] More than 4 long strip holes are provided on the bed base.

[0015] The longitudinal guide pair includes a slider, a longitudinal guide rail, and a guide rail seat. The slider is fixedly connected to the carriage, the longitudinal guide rail is fixedly connected to the guide rail seat, and the guide rail seat is fixedly connected to the bed plate.

[0016] The longitudinal feed device includes a lead screw, a clutch, a feed motor, a first sprocket, a second sprocket, and a chain; the feed motor is connected to the first sprocket, the first sprocket is connected to the second sprocket through the chain, the second sprocket is connected to the lead screw through the clutch, and a hand wheel connected to the lead screw is provided outside the second sprocket.

[0017] The lead screw is fixedly connected to the guide rail seat, a nut is sleeved on the lead screw, and the nut is fixedly connected to the carriage; a flat key is provided at the end of the lead screw connected to the hand wheel, and a notch matching the flat key and end teeth connected to the second sprocket are respectively provided on the clutch.

[0018] A turning method using the on-line turning device for idler wheels includes the following steps:

[0019] a. Install the idler wheel shaft on the equal-height support base and connect the idler wheel shaft to the transmission device.

[0020] b. Select a turning tool according to the idler wheel material and rotation speed, install the turning tool on the frame assembly, and use the longitudinal feed device to move the turning tool to the position of the idler wheel end face.

[0021] c. Using the horizontal split surface of the bearing seat as a reference, adjust the upper and lower positions of the bed plate until the tip of the turning tool is at the same height as the split surface.

[0022] d. Attach the alignment tool to the end face of the roller to simulate the side generatrix of the roller, adjust the front and rear position of the bed plate, and observe the change in the percentage indication value by moving the bed plate until the difference in the indication of the dial indicator at both ends of the I-shaped ruler is within 0.05mm. It is considered that the running trajectory of the turning tool is parallel to the axis of the roller. Tighten the bed plate, and when there is no change in the re-measurement of parallelism, the alignment is completed.

[0023] e. Start the transmission device, adjust the rotation speed of the supporting roller, and perform turning operations.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The method for simulating online turning of a supporting wheel provided by the present invention is based on the principle that the parts of the turning device itself have high precision. The supporting wheel is installed on a support seat with equal height as a component of the turning device, thereby reducing the radial error during the clamping process. The alignment tool is adsorbed on the end face of the supporting wheel, and an I-shaped straightedge is used to simulate the axial generatrix of the supporting wheel, thereby improving the machining accuracy.

[0026] Furthermore, in step e, the turning operation is first tested by stopping the machine to measure the diameters of both ends of the support wheel. If the error is within 0.2 mm, turning is continued until the requirement is met. If the error exceeds 0.2 mm, the front and rear positions of the bed plate need to be readjusted. After the requirement is met, the above turning steps are repeated until the required size and surface quality are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A front view of a support roller simulation online turning device provided by an embodiment of the present invention;

[0028] Figure 2 A left side view of a support roller simulation online turning device provided by an embodiment of the present invention;

[0029] Figure 3 A top view of a support roller simulation online turning device provided by an embodiment of the present invention;

[0030] Figure 4 Schematic diagram of the structure of the long hole in the embodiment of the present invention;

[0031] Figure 5 For the present invention Figure 2 A partial enlarged view of middle A;

[0032] Figure 6 A schematic diagram of the structure of a clutch in an embodiment of the present invention;

[0033] Figure 7This is the structural schematic diagram of the second sprocket in the embodiment of the present invention;

[0034] The markings in the figure are: 1 - bed base, 2 - electro-mechanical feed device, 3 - first sprocket, 4 - chain, 5 - handwheel, 6 - second sprocket, 7 - bearing seat, 8 - supporting wheel, 9 - alignment tool, 91 - right-angle ruler, 92 - I-shaped flat ruler, 10 - supporting wheel shaft, 11 - magnetic coupling, 12 - main drive device, 13 - longitudinal guide rail, 14 - guide rail seat, 15 - carriage, 16 - slider, 17 - tool rest assembly, 18 - bed plate, 19 - column, 20 - lead screw, 21 - clutch, 22 - dial indicator, 23 - turning tool, 24 - bed body, 25 - equal-height support seat, 26 - permanent magnetic chuck, 27 - long slot. Detailed implementation manners

[0035] To fully understand the purpose, features and effects of the present invention, the present invention will be described in detail through the following specific implementation manners, but the present invention is not limited thereto.

[0036] As Figures 1 to 4 shown, a supporting wheel simulation on-line turning device provided by the present invention is composed of a bed base 1, a bed body 24, a longitudinal guide rail pair, a tool rest assembly 17, an alignment tool 9, a drive device, a longitudinal feed device, etc.; the transmission shaft on the drive device is concentrically arranged with the supporting wheel shaft 10 of the to-be-machined supporting wheel 8, the supporting wheel shaft 10 is installed on the bearing seat 7, the bearing seat 7 is installed on the equal-height support seat 25, and the equal-height support seat 25 is installed on the bed base 1; a column 19 is installed on the bed base 1, a bed plate 18 is installed on the column 19 through an adjusting nut, a longitudinal guide rail pair is installed on the bed plate 18, a carriage 15 is installed on the longitudinal guide rail pair, and a longitudinal feed device is installed on the carriage 15; the carriage 15 is fixedly connected with the tool rest assembly 17, and a turning tool 23 and a dial indicator 22 are respectively arranged on the tool rest assembly 17; the alignment tool includes a right-angle ruler 91 and an I-shaped flat ruler 92, the right-angle ruler 91 is inlaid with a strong magnet, the I-shaped flat ruler 92 is vertically fixed on the right-angle ruler 91, the right-angle ruler 91 is adsorbed on the end face of the supporting wheel 8, and the I-shaped flat ruler 92 is tangent to the outer circumference of the supporting wheel 8.

[0037] The longitudinal guide rail pair is composed of a slider 16, a longitudinal guide rail 13 and a guide rail seat 14, etc. The carriage 15 is fixed on the slider 16 through bolts, the longitudinal guide rail 13 is fixed on the guide rail seat 14 through screws, and the guide rail seat 14 is fixed on the bed plate 18 through bolts. Preferably, the longitudinal guide rail pair selects a rolling linear guide rail pair, which has the advantages of small frictional resistance, high precision, no need for scraping and can be purchased as finished products compared with the cast iron dovetail sliding guide rail pair.

[0038] Nuts are respectively installed on the upper and lower surfaces of the bedplate 18 and are connected to the upright post 19. By adjusting the position of the nuts, the height of the bedplate 18 is changed, and further the height of the turning tool 23 is changed; there are 4 long slots 27 penetrating through the upright post 19 on the bedplate 18. The horizontal position of the upright post 19 is finely adjusted within the long slots 27, which has a wider application range than ordinary round holes. By adjusting the position of the upright post 19 in the long slots 27, the horizontal position of the bedplate 18 is changed, and further the horizontal position of the turning tool 23 is changed.

[0039] The upright post 19 is welded to the bed body 24, the bed body 24 is fixed on the bed base 1, and the equal-height support seat 25 is fixed on the bed base 1 by bolts. There are more than 4 long slots on the bed base 1. By changing the position of the bolts, the position of the equal-height support seat 25 is manually moved. Combining the longitudinal movement and the lateral movement of the bedplate 18 on the upright post 19, the turning of idler wheels 8 with different diameters and shaft lengths is realized.

[0040] The to-be-machined idler wheel 8 is installed on the equal-height support seat 25. A idler wheel shaft 10 is provided on the idler wheel 8. The idler wheel shaft 10 is sleeved in the bearing block 7. The idler wheel shaft 10 is connected to the transmission device through a magnetic coupling 11. The bearing block 7 is fixedly installed on the equal-height support seat 25. The transmission device is fixedly connected to the bed base 1. A motor is provided on the transmission device, and the motor is connected to a frequency converter. By controlling the motor of the transmission device through the frequency converter, the idler wheel 8 rotates smoothly, and according to the requirements of rough turning and finish turning, the stepless adjustment of the rotation speed of the idler wheel 8 is completed. Preferably, the power of the motor is 4 kW.

[0041] Preferably, as Figure 3 shown, the magnetic coupling 11 is provided with a U-shaped connecting piece, and a permanent magnet chuck 26 is installed in the U-shaped connecting piece.

[0042] The turning tool 23 is fixed on the tool rest assembly 17. The tool rest assembly 17 is fixed on the carriage 15 by bolts. The carriage 15 is connected to the longitudinal feed device. The longitudinal feed device is composed of a lead screw 20, a clutch 21, a feed motor, a first sprocket 3, a second sprocket 6, a chain 4, a handwheel 5, etc. The structural schematic diagrams of the clutch and the second sprocket are as Figure 6 and Figure 7As shown; the feed motor is preferably an electronic mechanical feeder 2, which is fixedly connected to the first sprocket 3 through an output shaft, and the first sprocket 3 is connected to the second sprocket 6 through a chain 4 and drives it to rotate, which plays a role in amplifying torque. The second sprocket 6 rotates in an empty sleeve on the lead screw 20, and a handwheel 5 connected to the lead screw 20 is provided on the outside of the second sprocket 6. The lead screw 20 is fixed on the guide rail seat 14 through a bearing, and a screw nut is set on the lead screw 20, and the screw nut is fixedly connected to the carriage 15 through a bolt; a flat key is provided at the end of the lead screw 20 connected to the handwheel 5, and a clutch 21 is located between the second sprocket 6 and the bearing, and a notch matched with the flat key and an end tooth connected to the second sprocket 6 are provided on the clutch 21. The electronic mechanical feeder 2 transmits the motion to the lead screw 20 through a chain drive, and then drives the carriage 15 to move, thereby realizing the longitudinal feeding of the turning tool 23. Preferably, the power of the electronic mechanical feeder is 0.2kW.

[0043] like Figure 5 As shown, the alignment tool 9 is composed of a square 91 and an I-shaped flat ruler 92. The square 91 is inlaid with a strong magnet. The I-shaped flat ruler 92 is vertically fixed to the outside of the right angle side of the square 91 by bolts, so that its lower bottom surface contacts the right angle side of the square 91. The square 91 is adsorbed on the end face of the supporting roller 8, so that the lower bottom surface of the I-shaped flat ruler 92 is parallel to the axis of the supporting roller 8 and tangent to the side of the supporting roller 8; the tool holder assembly 17 is provided with a dial indicator 22, and the dial indicator 22 uses the upper bottom surface of the I-shaped flat ruler 92 as a reference to align the longitudinal guide rail 13 to be parallel to the axis of the supporting roller 8. Preferably, the I-shaped flat ruler 92 is made of aluminum-magnesium alloy, which is light in weight and easy to use.

[0044] A method for simulating online turning of a support wheel, the steps are as follows:

[0045] a. Install the supporting wheel 8 on the equal height support seat 25, and connect the supporting wheel shaft 10 to the transmission device.

[0046] b. Select a turning tool 23 according to the material and rotation speed of the supporting wheel 8, install the turning tool 23 on the tool holder assembly 17, and use the longitudinal feeding device to move the turning tool 23 to the end surface position of the supporting wheel 8.

[0047] c. Using the horizontal split surface of the bearing seat 7 as a reference, adjust the upper and lower positions of the bed plate 18 until the tip of the turning tool 23 is at the same height as the split surface.

[0048] d. Attach the alignment tool 9 to the end face of the roller 8 to simulate the side generatrix of the roller 8, adjust the front and rear position of the bed plate 18, and observe the change in the indication of the dial indicator 22 by moving the bed plate 18, until the indication difference of the dial indicator 22 at both ends of the I-shaped straight ruler 92 is within 0.05mm, it is considered that the running trajectory of the turning tool 23 is parallel to the axis of the roller 8, tighten the bed plate 18, and when there is no change in the re-measurement of parallelism, the alignment is completed.

[0049] e. Start the transmission device, adjust the rotation speed of the supporting wheel 8, and perform turning operation.

[0050] The preferred turning method is:

[0051] Install the roller 8 with the replaced roller shaft 10 on the equal height support seat 25, where only the pressure cover and thrust bearing at one end are not installed. After aligning the output shaft of the transmission device to be concentric with the roller shaft 10, install the permanent magnetic suction cup 26 with switch control into the U-shaped connector of the magnetic coupling 11, turn on the switch to make the magnetic coupling 11 adsorbed on the end face of the roller shaft 10, at this time, the transmission device transmits power to the roller 8. With the horizontal split surface of the bearing seat 7 of the roller 8 as the reference plane, adjust the position of the lower nut on the column 19, and drive the bed plate 18 to move up and down until the tip of the turning tool 23 is at the same height as the split surfaces on both sides. This ensures that the running trajectory of the turning tool 23 is at the same height as the axis of the roller 8.

[0052] Adsorb the square 91 of the alignment tool 9 to the end face of the roller 8, so that the reference surface of the I-shaped ruler 92 is parallel to the axis of the roller 8, simulating the side generatrix of the roller 8 to prevent the diameter of the roller 8 from being different after the machining during the turning process. The dial indicator 22 is fixed on the tool holder assembly 17, and the dial indicator 22 is used to align the longitudinal guide rail 13 with the axis of the roller 8 by using the upper bottom surface of the I-shaped ruler 92 as the reference. Observe the change in the indication of the dial indicator 22 by moving the drag plate 15, and use the long hole 27 to fine-tune the front and rear position of the bed plate 18. When the difference in the indication of the dial indicator 22 at both ends of the I-shaped ruler 92 is within 0.05mm, it can be considered that the running trajectory of the tool tip is parallel to the axis of the roller 8. Lock the upper nut on the bed plate 18, and after re-measuring the parallelism and finding no change, the alignment is completed.

[0053] Start the electronic mechanical tool feeder 2, and amplify the torque through the transmission of the first sprocket 3, the second sprocket 6 and the chain 4. When the end teeth of the clutch 21 mesh with the second sprocket 6, the second sprocket 6 transmits power to the screw 20, and the screw 20 drives the nut to move, and then drives the carriage 15 and the tool holder assembly 17 to move, so as to realize the automatic feeding movement of the turning tool 23. When the clutch 21 moves axially along the flat key and disengages from the second sprocket 6, the second sprocket 6 rotates on the screw 20. At this time, the rotating handwheel 5 drives the screw 20 to rotate, so as to realize the manual feeding movement of the turning tool 23.

[0054] Start the drive motor through the frequency converter, adjust the speed, and perform turning after the supporting roller 8 reaches a stable operating speed. Select the turning tool 23 and the feed rate according to the material and speed of the supporting roller 8. Under the condition that both ends of the supporting roller 8 can be turned round, first select a small cutting depth for trial turning, such as 1 mm to 2 mm. After stopping the machine, measure the diameter dimensions of both ends of the supporting roller 8. If the error is within 0.2 mm, turning can be continued until the requirements are met. If the error exceeds 0.2 mm, the front and rear positions of the bedplate 18 need to be readjusted. After meeting the requirements, repeat the above turning steps until the required dimensions and surface quality are achieved.

[0055] Finally, it should be noted that the above-listed are only the preferred embodiments of the present invention. Of course, those skilled in the art can make changes and modifications to the present invention. Provided that these modifications and variations fall within the scope of the claims of the present invention and its equivalent technologies, they should all be considered as the protection scope of the present invention.

Claims

1. A kind of idler wheel simulation on-line turning device, which includes a bed base, a longitudinal guide rail pair, a tool rest assembly, an alignment tool, a transmission device and a longitudinal feed device; it is characterized in that, The transmission shaft on the transmission device is concentrically arranged with the idler wheel shaft of the idler wheel to be processed. The idler wheel shaft is installed on the bearing seat, the bearing seat is installed on the equal-height support seat, and the equal-height support seat is installed on the bed base; A column is installed on the bed base, a bed plate is installed on the column through an adjusting nut, a longitudinal guide rail pair is installed on the bed plate, a carriage is installed on the longitudinal guide rail pair, and a longitudinal feed device is installed on the carriage; The carriage is fixedly connected with the tool rest assembly, and a turning tool and a dial indicator are respectively arranged on the tool rest assembly; The alignment tool includes a right-angle ruler and an I-shaped flat ruler. The right-angle ruler is inlaid with a strong magnet, the I-shaped flat ruler is vertically fixed on the right-angle ruler, the right-angle ruler is adsorbed on the end face of the idler wheel, and the I-shaped flat ruler is tangent to the outer circumference of the idler wheel; The idler wheel to be processed is installed on the equal-height support seat. There is an idler wheel shaft on the idler wheel. The idler wheel shaft is sleeved in the bearing seat. The idler wheel shaft is connected with the transmission device through a magnetic coupling. The bearing seat is fixedly installed on the equal-height support seat. The transmission device is fixedly connected with the bed base. There is a motor on the transmission device, and the motor is connected with a frequency converter; The idler wheel shaft is connected with the transmission device through a magnetic coupling; The magnetic coupling is provided with a U-shaped connecting piece, and a permanent magnet chuck is installed in the U-shaped connecting piece; Adsorb the right-angle ruler of the alignment tool to the end face of the idler wheel, so that the reference surface of the I-shaped flat ruler is parallel to the axis of the idler wheel, simulating the side generatrix of the idler wheel, and preventing the diameter of the idler wheel from being different after machining during the turning process; the dial indicator is fixed on the tool rest assembly. Use the dial indicator to align the longitudinal guide rail parallel to the axis of the idler wheel with the upper bottom surface of the I-shaped flat ruler as the reference. Observe the change of the dial indicator value by moving the carriage, and finely adjust the front and rear positions of the bed plate by using the long slot. When the difference in the dial indicator values at both ends of the I-shaped flat ruler is within 0.05 mm, it can be considered that the running track of the tool tip is parallel to the axis of the idler wheel; There is a long slot on the bed plate that penetrates through the column, and nuts connected to the column are respectively installed on the upper and lower surfaces of the bed plate.

2. The supporting roller simulation on-line turning device according to claim 1, characterized in that There are more than 4 long slots on the bed base.

3. The carrier roller simulation on-line turning device according to claim 1, wherein, The longitudinal guide rail pair includes a slider, a longitudinal guide rail and a guide rail seat. The slider is fixedly connected with the carriage, the longitudinal guide rail is fixedly connected with the guide rail seat, and the guide rail seat is fixedly connected with the bed plate.

4. The idler wheel simulation on-line turning device according to claim 3, wherein, The longitudinal feed device includes a lead screw, a clutch, a feed motor, a first sprocket, a second sprocket and a chain; the feed motor is connected with the first sprocket, the first sprocket is connected with the second sprocket through the chain, the second sprocket is connected with the lead screw through the clutch, and a hand wheel connected with the lead screw is arranged outside the second sprocket.

5. The idler wheel simulation on-line turning device according to claim 4, characterized in that The lead screw is fixedly connected with the guide rail seat, a nut is sleeved on the lead screw, and the nut is fixedly connected with the carriage; there is a flat key at the end of the lead screw connected with the hand wheel, and a notch matching the flat key and end teeth connected with the second sprocket are respectively arranged on the clutch.

6. A turning method using the idler wheel simulation online turning device according to any one of claims 1-5, characterized in that, It includes the following steps: a. Install the idler wheel shaft on the equal-height support seat and connect the idler wheel shaft with the transmission device; b. Select a turning tool according to the material and speed of the idler wheel, install the turning tool on the tool rest assembly, and use the longitudinal feed device to move the turning tool to the position of the end face of the idler wheel; c. With the horizontal split surface of the bearing seat as the reference, adjust the up and down position of the bed plate until the tool tip of the turning tool is at the same height as the split surface; d. Attach the alignment tool to the end face of the supporting roller to simulate the side generatrix of the supporting roller, adjust the front and rear position of the bed plate, and observe the change of the percentage indication value by moving the bed plate until the difference between the dial indicator and the two ends of the I-shaped ruler is within 0.05mm. It is considered that the running track of the turning tool is parallel to the axis of the supporting roller. Tighten the bed plate. When there is no change in the re-measurement of parallelism, the alignment is completed; e. Start the transmission device, adjust the rotation speed of the supporting roller, and perform turning operations.

7. The turning method of the idler wheel simulation on-line turning device according to claim 6, characterized in that, In step e, the turning operation is first tested by stopping the machine and measuring the diameters of both ends of the support wheel. If the error is within 0.2 mm, continue turning until the requirement is met. If the error exceeds 0.2 mm, the front and rear positions of the bed plate need to be readjusted. After the requirement is met, repeat the above turning steps until the required size and surface quality are achieved.

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