Intelligent plate rolling machine

Abstract

An intelligent plate rolling machine is characterized in that a displacement sensor and a pressure sensor are arranged on a feeding roller and used for recording a displacement pressure curve or a broken line when a pre-bent plate end of an upper roller or a rolled edge is pressed down to a preset position; the method comprises the following steps: actually measuring the plate thickness, recording the plate width, recording a curve or a broken line corresponding to the feeding displacement of a feeding roller and the feeding length of a workpiece plate when a pre-bent plate end or a contact point of a workpiece and a roller surface transits from a flat plate to a bent plate during edge rolling, and actually measuring the straight edge length of the plate end and the prebending or edge rolling forming radius qualification degree of the plate end; recording the data according to part numbers and inputting the data into a data storage unit; the highest qualified degree of the workpiece forming radius is used as a target value, related programs of machine learning are used for learning and training the original related data, and when a new same workpiece is rolled, according to workpiece parameters such as actually measured plate thickness, plate width, a displacement pressure curve or a broken line when a feeding roller enters a preset position and the like, the machining precision of the workpiece is improved. And the initial position parameter of the feeding roller or the feeding displacement feeding length curve or broken line is automatically selected.

Description

Technical Field

[0001] The present invention belongs to forging equipment for processing metal materials with working rollers, and relates to the fields of roller plate rolling machines, and specifically to a method and device for intelligentizing a three-roller or four-roller plate rolling machine, and an intelligent plate rolling machine. Background Art

[0002] Existing CNC plate rolling machines can only operate according to the programmed program. Most of them can only control the synchronization and position accuracy of the working rolls, perform pre-bending and rolling according to the calculated or preset process, and provide feedback and correction afterwards, so the accuracy and efficiency are not high.

[0003] The existing curvature radius measuring device is mainly based on optical principles. It is difficult to measure when the pre-bent plate end is blocked by the working roller and the frame. It can only be measured after the workpiece is bent to a certain length. Generally, measurement feedback correction can only be performed after the workpiece has been discharged for a certain length. Summary of the invention

[0004] The problem to be solved by the present invention is to provide a method and device for an intelligent plate rolling machine, an intelligent plate rolling machine, which can automatically control pre-bending and rolling in real time, can measure the forming radius after the workpiece is discharged, and provide feedback correction before, so as to improve the rolling accuracy and efficiency.

[0005] In order to achieve the above-mentioned purpose, an intelligent plate rolling machine is provided, characterized in that: a displacement and pressure sensor is provided on the feed roller, and when the plate end is pre-bent or the plate is rolled symmetrically, the length LT of the workpiece after the material is aligned is recorded, the initial clamping pressure PX1 and position LX of the lower roller of the four-roller plate rolling machine, the displacement pressure curve or broken line of the side roller and the lower roller when the side roller on the feed side rises and pre-bends to a preset position, or the horizontal movement position LXS of the lower roller of the three-roller plate rolling machine, and the displacement pressure curve or broken line when the upper roller pre-bends the plate end or rolls it down to a preset position; the plate thickness is measured, the plate width is recorded, the feed displacement of the feed roller and the corresponding curve or broken line of the workpiece plate feeding length when the contact point between the workpiece and the roller surface transitions from a flat plate to a bent plate when the plate end is pre-bent or rolled, the straight edge length of the plate end and the qualified radius of the plate end pre-bending or rolling forming are measured, and recorded according to the part number. The above data is input into the data storage unit; the highest qualified degree of the workpiece forming radius is taken as the target value, and the above original related data are learned and trained with the relevant programs of machine learning. When rolling a new workpiece of the same kind, the initial position parameters of the feed roller or the feed displacement feeding length curve or broken line are automatically selected according to the workpiece parameters such as the measured plate thickness, plate width, and the displacement pressure curve or broken line when the feed roller enters the preset position. In the rolling process where the qualified degree of the workpiece forming radius can be measured, the position parameters of the feed roller and the contact point between the workpiece and the roller surface when the pre-bent plate end or the workpiece is rolled When the contact point transitions from a flat plate to a bent plate or the other end from the tangent point to the minimum straight side length, the feed displacement of the feed roller and the workpiece sheet feeding length corresponding to the curve or broken line are fine-tuned according to the measured qualified degree of the workpiece forming radius, so as to ensure the optimal qualified degree of the workpiece forming radius.

[0006] The measurement of the workpiece forming radius can be online measurement, or it can be measured afterwards. It can be measured automatically by sensors or manually. The degree of conformity of the workpiece forming radius can be scored. The score can be positive or negative, with greater being positive and less being negative. The absolute value is used to judge the conformity of the forming radius.

[0007] Usually, the mechanical properties of materials are measured by the method of tensile test bars to measure the stress-strain curve. The present invention uses a bending method to measure the displacement pressure curve or broken line. During the rolling process, the feed roller also undergoes an elastic deformation stage, a yield stage and a strengthening stage. As the feed amount of the working roller increases until a fixed preset feed amount is reached, the stress and strain also gradually increase and sequentially undergo the above three stages. The bending method is used to measure the displacement pressure curve or broken line, which is also the actual measurement of the mechanical properties of the material. The only difference is that the material has not been processed, and different plate thicknesses have different effects. Mastering the parameters of the plate thickness can reduce the effects.

[0008] When the four-roll plate rolling machine pre-bends the plate end, the initial clamping pressure PX1 and position LX of the lower roller also contain information about the plate thickness; the pressure of the feed roller is affected by the material and plate thickness. By mastering the parameters of the plate thickness, the influence of the material can be distinguished.

[0009] The intelligent plate rolling machine described above is characterized in that: a rotary encoder or other sensor for measuring the rotation angle and rotation speed of the working roller is provided on the main transmission device of the relevant roller; when the relevant roller is a passive roller, a measuring transmission device is provided to drive the rotary encoder or other sensor for measuring the rotation angle and rotation speed of the working roller; the plate rolling machine is equipped with a curvature radius measuring device; the pulse data MO collected by the sensor on the discharging lower roller or side roller is related to the size of the outer radius of the workpiece after the rebound; the pulse data collected by the sensor on the upper roller is related to the size of the inner radius of the workpiece before the rebound; during the first forming, the pulse data collected by the sensor on the feeding lower roller or side roller is related to the length of the neutral layer of the workpiece; during non-first forming, the pulse data collected by the sensor on the feeding lower roller or side roller is related to the size of the initial outer radius of the workpiece; the actual forming radius of the workpiece is measured, and the correlation between the actual forming radius of the workpiece and the pulse data collected by the sensor is established to control the position parameters of the working roller feed or the feed displacement feeding length curve or broken line to realize online control of the plate rolling accuracy.

[0010] Since the working rollers may have a waist drum shape and elastic bending deformation when loaded, resulting in inconsistent axial curvature of the workpiece and uneven thickness and material of the workpiece, the loads of each roller are different, and the pulse data collected by the sensors on each roller are not completely equal to the actual length of the workpiece surface, but are related. For workpieces with relatively uniform thickness and material and a fixed plate rolling machine, this correlation is stable. This method can be used when the actual forming radius of the workpiece cannot be measured online, or used in conjunction with claim 1.

[0011] The intelligent plate rolling machine is characterized in that: for large and medium-sized plate rolling machines, the main transmission device of the working roller adopts constant power, and thick plates and small diameter workpieces adopt slow speed and high power to form them in one time as much as possible.

[0012] The invention is suitable for a three-roller or four-roller plate rolling machine.

[0013] The beneficial effects of the present invention are: real-time intelligent control of pre-bending and rolling of workpieces, improved automation of plate rolling, improved forming accuracy of workpieces, and improved efficiency of plate rolling. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of embodiment 1 of the present invention;

[0015] Figure 2 , 3 is a schematic diagram of Embodiment 2 of the present invention;

[0016] Figure 4 , 5 is a schematic diagram of embodiment 3 of the present invention;

[0017] In the figure, LT is the length of the workpiece after the material is aligned, PX1 is the initial clamping pressure of the lower roller of the four-roller plate rolling machine, LX is the position parameter of the lower roller of the four-roller plate rolling machine, LCJ is the position parameter of the side roller on the feeding side of the four-roller plate rolling machine, LCO is the position parameter of the side roller on the discharging side of the four-roller plate rolling machine, LXS is the horizontal movement position parameter of the lower roller of the three-roller plate rolling machine, and LS is the position parameter of the upper roller of the three-roller plate rolling machine; MI is the number of rotary encoder pulses collected by the upper roller of the plate rolling machine in a certain time period, which is related to the inner radius of the workpiece before springback; MO is the number of rotary encoder pulses collected by the lower roller or side roller of the plate rolling machine in a certain time period, which is related to the outer radius of the workpiece after springback; MJ is the number of rotary encoder pulses collected by the lower roller or side roller of the plate rolling machine in a certain time period, which is related to the length of the neutral layer of the workpiece in a certain time period or the initial outer radius before bending. DETAILED DESCRIPTION

[0018] Embodiment 1:

[0019] Figure 1A three-roller symmetrical plate rolling machine is rolling the plate symmetrically. Both ends have been pre-bent on the press. When the straight section of the workpiece contacts the two lower rollers, the displacement pressure curve or broken line between the pressing position and the upper roller feeding pressure when the upper roller is pressed down to the preset pressing position is recorded, the plate thickness is measured, the plate width is recorded, the plate is rolled, and the conformity of the workpiece forming radius is measured; when the contact point between the workpiece and the lower roller begins to transition from the straight section to the pre-bent curve, the corresponding curve or broken line of the upper roller pressing position parameter and the transition section feeding length parameter is recorded, and the actual forming radius of each section of the workpiece is measured. The plate thickness is measured and the plate width is recorded. The K nearest neighbor algorithm or support vector machine regression algorithm or other algorithms are used to automatically select the corresponding curves or broken lines between the upper roller pressing position parameters and the feeding length parameters in the transition section and the upper roller pressing position parameters in the straight section and the upper roller pressing position parameters when the upper roller is pressed down to the preset position.

[0020] Another method is as follows Figure 1 As shown: record the number of pulses sent by the rotary encoder on the transmission device of the upper roller of the workpiece as MI, record the number of pulses sent by the rotary encoder on the transmission device of the discharge side roller as MO, record the displacement pressure curve or broken line between the pressing position and the upper roller feed pressure when the upper roller is pressed down to the preset pressing position, measure the plate thickness, record the plate width, record the qualified degree of the symmetrical plate rolling workpiece forming radius of the measured workpiece, establish the workpiece rolling data set of the same part number, and when rolling a new workpiece of the same type, according to the displacement between the upper roller pressing position parameter and the upper roller feed pressure when the upper roller is pressed down to the preset position in the straight section Shift the pressure curve or broken line, measure the plate thickness, record the plate width, and use the K nearest neighbor algorithm or support vector machine regression algorithm or other algorithms to automatically select the number of pulses of MI corresponding to every 1000 pulses of MO when the symmetrical rolled workpiece reaches the forming radius, for example, 850 pulses and the fluctuation value of 850 MI pulses with an accuracy within the qualified range; the plate thickness surface is relatively flat and clean, and in the straight section and transition section of the rolling, keep the number of pulses of 850 MI corresponding to every 1000 pulses of MO and the fluctuation value of 850 MI pulses within the qualified range to obtain a higher workpiece forming radius qualification.

[0021] If the center distance of the lower roller of the plate rolling machine is 600mm, and the pre-bending length at each end is greater than 300mm, adjust the corresponding values ​​of MO and MI every 5-10mm, and adjust the rolling speed to low speed.

[0022] Embodiment 2:

[0023] Figure 2 , 3It is a schematic diagram of the pre-bending plate end of the four-roller plate rolling machine, records the length LT of the upper and lower rollers after clamping the workpiece, records the initial clamping pressure PX1 and position LX of the lower roller, records the displacement pressure curve or broken line of the side roller and the lower roller when the side roller on the feed side rises to the preset position, records the measured plate thickness, records the plate width, records the feed displacement of the feed roller when the contact point between the workpiece and the roller surface transitions from a flat plate to a bent plate when the plate end is pre-bent and the feed length of the workpiece plate corresponds to the curve or broken line, records the measured straight edge length of the workpiece and the conformity of the workpiece forming radius of the adjacent straight edge section, inputs the above data into the data storage unit according to the part number, and establishes a pre-bending plate rolling data set for workpieces with the same part number; rolls a new For the same workpiece, according to the length LT of the upper and lower rollers retreating after clamping the workpiece, the initial clamping pressure PX1 and position LX of the lower roller, the displacement pressure curve or broken line of the side roller and the lower roller when the side roller on the feed side rises to the preset position during pre-bending, the actual plate thickness and plate width are determined by using the K nearest neighbor algorithm or support vector machine regression algorithm or other algorithms, and the last position of the pre-bending rise of the side roller on the feed side is automatically selected, and the contact point between the workpiece and the roller surface when the pre-bending plate end is transitioned from a flat plate to a bent plate, and the corresponding curve or broken line of the feed displacement of the feed roller and the feeding length of the workpiece plate is selected; during pre-bending, the contact point between the straight edge B and the lower roller moves forward until the contact between the bent plate and the lower roller reaches a stable state, which is a transition section.

[0024] Another method is: Figure 2In the method, a rotary encoder is provided on the transmission device of the upper roller, the lower roller and the feed side roller, and pulses MI, MO and MJ emitted by the rotary encoder on the transmission device of the upper roller, the lower roller and the feed side roller can be collected in the same time period, wherein MI is the number of rotary encoder pulses collected at the upper roller of the plate rolling machine in a certain time period, which is related to the inner radius of the workpiece before springback; MO is the number of rotary encoder pulses collected at the lower roller or side roller of the plate rolling machine in a certain time period, which is related to the outer radius of the workpiece after springback; MJ is the number of rotary encoder pulses collected at the feed side roller of the plate rolling machine in a certain time period, which is related to the length of the neutral layer of the workpiece in a certain time period; the above data can replace the "curve or broken line corresponding to the feed displacement of the feed roller and the feeding length of the workpiece when the contact point between the workpiece and the roller surface transitions from a flat plate to a bent plate during the pre-bending of the plate end" in the previous method, record the length LT of the upper and lower rollers retreating after clamping the workpiece against the material, and record the initial clamping pressure of the lower roller. force PX1 and position LX, record the displacement pressure curve or broken line of the side roller and the lower roller when the side roller pre-bending on the feeding side rises to the preset position, record the measured plate thickness, record the plate width, record the measured straight edge length of the workpiece and the qualified degree of the workpiece forming radius of the adjacent straight edge section, input the above data into the data storage unit according to the part number, and establish the pre-bending plate rolling data set of the workpiece with the same part number; when rolling a new workpiece of the same kind, according to the length LT of the upper and lower rollers after clamping the workpiece against the material, the initial clamping pressure PX1 and position LX of the lower roller, the displacement pressure curve or broken line of the side roller and the lower roller when the side roller pre-bending on the feeding side rises to the preset position, the measured plate thickness, plate width, use the K nearest neighbor algorithm or the support vector machine regression algorithm or other algorithms, automatically select the last position of the side roller pre-bending on the feeding side, select the corresponding relevant data of MJ and MI when the required forming radius is obtained, and adjust the feed amount of the feed side roller to make the transition section obtain the required forming radius. After that, MI, MO, and MJ enter a stable corresponding relationship.

[0025] Figure 3 The figure shows the situation when the straight edge at the other end is pre-bent. The pressure PX2 and / or position LX of the pre-bending load of the lower roller, the pressure PCO and / or position LCO of the discharge side roller when the plate is bent are related to the straight edge length, plate thickness, strength, and forming radius of the workpiece; the lower roller is the feed roller, and the pulse data collected is MJ, which is related to the length of the neutral layer of the workpiece; the discharge side roller is the discharge roller, and the pulse data collected is MO, which is related to the outer radius of the workpiece after rebound, from the straight edge section tangent to the lower roller to the remaining straight edge section. Figure 3The length of B shown is also a transition section. The feed amount of the discharge side roller should be adjusted according to the corresponding relevant data of MO and MI when the required forming radius is obtained in the past, or according to the length LT of the upper and lower rollers after clamping the workpiece, the initial clamping pressure PX1 and position LX of the lower roller, the displacement pressure curve or broken line of the side roller and the lower roller when the side roller on the feed side rises to the preset position after pre-bending, the actual measured plate thickness and plate width, and the feed displacement of the feed roller and the corresponding curve or broken line of the workpiece sheet feeding length when the contact point between the workpiece and the roller surface during the pre-bending plate end is automatically selected from the transition from the flat plate tangent point to the shortest straight edge; so that the transition section can obtain the required forming radius.

[0026] When pre-bending the plate ends, roll the plate at a slow speed.

[0027] Embodiment 3:

[0028] Figure 4 The four-roller plate rolling machine enters the first stage of rolling. The three-roller plate rolling machine composed of upper and lower rollers and the side roller on the right is in a stable state when the plate thickness and material are relatively uniform. MJ is the number of rotary encoder pulses collected by the right side roller in a certain time period, which is related to the length of the neutral layer of the workpiece in a certain time period. MO is the number of rotary encoder pulses collected by the lower roller of the plate rolling machine at a certain time period, which is related to the outer radius of the workpiece after rebound; MI, MO, and MJ are a stable corresponding relationship. If necessary, fine-tune the position LCJ of the right side roller by maintaining the corresponding correlation between MJ and MI or MO and MI.

[0029] Figure 5 When the four-roller plate rolling machine enters the second stage of rolling, the side roller on the right side descends and disengages from work, and the side roller on the left side rises to the preset position and quickly switches to a three-roller plate rolling machine consisting of upper and lower rollers and the side roller on the left side. MJ is the number of rotary encoder pulses collected by the lower feed roller in a certain time period, which is related to the length of the neutral layer of the workpiece in a certain time period. MO is the number of rotary encoder pulses collected by the side roller on the discharge side of the plate rolling machine in a certain time period, which is related to the outer radius of the workpiece after rebound. MI, MO, and MJ are also a stable corresponding relationship. If necessary, fine-tune the position LCO of the left side roller by maintaining the corresponding correlation between MJ and MI or MO and MI.

[0030] In this example, the position parameters of the side rollers in the stable section in Example 2 can be used for rolling, and fine-tuning can be performed according to the measured pressure fluctuations. This method can be used for auxiliary monitoring, and fine-tuning can be performed when large fluctuations are detected.

[0031] For the same part, using materials from different batches, the thickness and material of the workpiece will have certain changes, which will cause changes in the pressure or position of the feed roller. The higher the material and the thicker the plate, the greater the pressure; the higher the material, the greater the springback, and the thicker the plate, the smaller the springback. MI is not sensitive to the material but sensitive to the plate thickness. The feed roller pressure and position parameters are the original relevant data for the forming diameter of the workpiece with changes in thickness and material.

[0032] exist Figure 1 , 4 The corresponding relationship between MI and MO in 5 contains the information of the yield limit, strengthening coefficient and rebound performance of the workpiece, which are analyzed one by one below.

[0033] Assume that DS, DX, DC are pulses representing the length of the circumference of the upper roller, lower roller and side roller, R1, R2, R3 are the radii of the upper roller, lower roller and side roller, SS, SX, SC are the number of pulses corresponding to one rotation of the upper roller, lower roller and side roller; Assume that the outer radius of the workpiece after rebound is RO, and the plate thickness is S. According to the continuity principle and the properties of the neutral layer, in the same time period, the length of the neutral layer passed by each roller is the same, then:

[0034] DS=2*PAI*R1 / SS DX=2*PAI*R2 / SX DC=2*PAI*R3 / SC

[0035] The length of the outer surface of the workpiece segment with an arc angle of θ after springback and the corresponding neutral layer is:

[0036] RO*θ=MO*DX(RO-S / 2)*θ=MJ*DC After dividing the two equations, we get

[0037] 2*RO=MO*DX*S / (MO*DX-MJ*DC)a

[0038] From formula a, it can be concluded that MO and MJ are the original relevant data of the workpiece forming diameter.

[0039] The inner diameter of the workpiece after springback is obtained from formula a:

[0040] 2*ROI=2*RO-2*S=MO*DX*S / (MO*DX-MJ*DC)-2*S a-1

[0041] The spring-front length of the workpiece inner surface and neutral layer passing through the upper roller rotation angle θi is:

[0042] RI*θi=MI*DS(RI+S / 2)*θi=MJ*DC After dividing the two equations, we get

[0043] 2*RI=MI*DS*S / (MJ*DC-MI*DS)a-2

[0044] Dividing formula a-2 by formula a-1 gives the coefficient of resilience:

[0045] RI / ROI=MI*DS*(MO*DX-MJ*DC) / ((MJ*DC-MI*DS)*(2MJ*DC-MO*DX))

[0046] The rebound coefficient is related to MI, MJ, and MO. Since MI, MJ, and MO are all approximate values ​​or average values ​​of approximate values, the present invention uses the measured workpiece forming radius to obtain the relevant MI, MJ, MO and the feed position parameters and pressure parameters of the working roll that meet the conditions.

[0047] Due to the different pressures between each roller and the workpiece, the roller and the workpiece will produce elastic deformation, which will affect the measurement of the surface length of the workpiece passing through the working roller; for thick plates, the position of the neutral layer will change, and the above correlation still exists.

[0048] It is best to install a workpiece centering device at the feeding end of the plate rolling machine. The workpiece surface should be clean and free of water, snow, oil and burrs; the working roller should have sufficient rigidity, processing accuracy and cleanliness to ensure the stability and repeatability of MI, MJ and MO.

[0049] It is best for the plate rolling machine to form in one go. For large and medium-sized plate rolling machines, the main drive device of the working roller adopts constant power, while thick plates and small diameter workpieces use slow speed and high power.

Claims

1. An intelligent plate rolling machine, characterized in that: The feed roller is provided with a displacement and pressure sensor. When the plate end is pre-bent or the plate is rolled symmetrically, the length LT of the workpiece after the material is aligned is recorded, the initial clamping pressure PX1 and position LX of the lower roller of the four-roller plate rolling machine, the displacement pressure curve or broken line of the side roller and the lower roller when the side roller on the feed side rises to pre-bend to the preset position, or the horizontal movement position LX of the lower roller of the three-roller plate rolling machine, and the displacement pressure curve or broken line when the upper roller pre-bends the plate end or rolls it down to the preset position; the plate thickness is measured, the plate width is recorded, the contact point between the workpiece and the roller surface when the plate end is pre-bent or rolled, and the corresponding curve or broken line of the feed displacement of the feed roller and the feeding length of the workpiece plate when the contact point between the workpiece and the roller surface transitions from a flat plate to a bent plate when the plate end is pre-bent or rolled, the straight edge length of the plate end and the qualified degree of the plate end pre-bending or rolling forming radius are measured, and the above data are recorded according to the part number and entered into the data storage unit; Taking the highest qualified degree of workpiece forming radius as the target value, the above original relevant data are learned and trained by relevant programs of machine learning. When rolling a new workpiece of the same kind, the initial position parameters of the feed roller or the feed displacement feeding length curve or broken line are automatically selected according to the workpiece parameters such as the measured plate thickness, plate width, and the displacement pressure curve or broken line when the feed roller enters the preset position. In the rolling process where the qualified degree of the workpiece forming radius can be measured, the position parameters of the feed roller and the contact point between the workpiece and the roller surface when the pre-bent plate end or the plate is rolled When the contact point transitions from a flat plate to a bent plate or the other end from the tangent point to the minimum straight side length, the feed displacement of the feed roller and the workpiece sheet feeding length corresponding to the curve or broken line are fine-tuned according to the measured qualified degree of the workpiece forming radius to ensure the optimal qualified degree of the workpiece forming radius. The measurement of the workpiece forming radius can be online measurement, or it can be measured afterwards. It can be measured automatically by sensors or manually. The degree of conformity of the workpiece forming radius can be scored. The score can be positive or negative, with greater being positive and less being negative. The absolute value is used to judge the conformity of the forming radius.

2. According to claim 1, the intelligent plate rolling machine is characterized in that: A rotary encoder or other sensor for measuring the rotation angle and rotation speed of the working roller is installed on the main transmission device of the relevant roller. When the relevant roller is a passive roller, a measuring transmission device is installed to drive the rotary encoder or other sensor for measuring the rotation angle and rotation speed of the working roller; the plate rolling machine is equipped with a curvature radius measuring device; the pulse data MO collected by the sensor on the discharging lower roller or side roller is related to the size of the outer radius of the workpiece after rebound; the pulse data collected by the sensor on the upper roller is related to the size of the inner radius of the workpiece before rebound; During the first forming process, the pulse data collected by the sensor on the lower feed roller or the side roller is related to the length of the neutral layer of the workpiece; When it is not the first forming, the pulse data collected by the sensor on the lower feed roller or the side roller is related to the size of the initial outer radius of the workpiece; the actual forming radius of the workpiece is measured, and the correlation between the actual forming radius of the workpiece and the pulse data collected by the sensor is established, and the position parameters of the working roller feed or the feed displacement feeding length curve or broken line are controlled to realize online control of the rolling accuracy.

3. The intelligent plate rolling machine according to claim 1 is characterized in that: For large and medium-sized plate rolling machines, the main drive device of the working roll adopts constant power, and thick plates and small diameter workpieces adopt slow speed and high power to form them in one time as much as possible.

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