JP4835390B2 - Rolling apparatus and rolling method - Google Patents

Description

  The present invention relates to a rolling device for rolling an endless metal ring into an endless metal belt, and more particularly to a technique for eliminating slippage between a rolling roller and a metal ring.

  2. Description of the Related Art Conventionally, in order to manufacture an endless metal belt used for a power transmission belt or the like, a rolling device that rolls an endless metal ring into a strip shape is known.

  As shown in FIG. 9, the rolling processing apparatus described in Patent Document 1 includes a pair of tension rollers 11 and 12 around which a metal ring 9 is wound, and a pressure receiving roller 15 disposed in the ring of the metal ring 9. A rolling roller 20 that sandwiches the metal ring 9 with the pressure receiving roller 15, and a pressure roller 30 that contacts the pressure receiving roller 15.

  Moreover, as shown in FIG. 10, the rolling processing apparatus described in Patent Document 2 functions as a pair of tension rollers 11 and 12 intended to hold the metal ring 9 in an elongated shape, and a pressure receiving roller. A rolling roller 20 that sandwiches the metal ring 9 between the first tension roller 11 and a pressure roller 30 that contacts the first tension roller 11 via a pair of support rollers 13 and 13 are provided. Is.

  In the rolling processing apparatus described in Patent Document 1 or Patent Document 2, when the rolling roller and the pressure roller rotate, the metal ring circulates between the tension rollers, and during this time, the metal ring and the pressure roller receive pressure. Rolled by a roller (or tension roller).

The pressure roller includes a “driven type” that is driven and rotated by a transmission belt wound between the pressure roller and the like, or a rotation drive means and is independent of the pressure roller. There is a "drive type" that rotates.
Both driven type and driven type pressure rollers are set to rotate at the start of rolling process in synchronization with the rolling roller so that no slip occurs between each roller and metal ring provided in the rolling processing device. Is done. However, as the metal ring is rolled, the thickness (plate thickness) gradually decreases.

In the driven pressure roller, when the metal ring thickness is reduced, the clutch is released during the rolling process to cope with the change in the rotation ratio between the rolling roller and the pressure roller, thereby eliminating the driven roller. . As a result, the pressure roller is rotated using the friction between the rolling roller and the metal ring, and when the rotation speed of the rolling roller is changed, the sliding between the metal ring and the roller in contact with the metal ring occurs. Will occur.
Further, in the drive-type pressure roller, if the rotational speed difference between the rolling roller and the pressure roller (or other roller in contact with the metal ring) exceeds a predetermined value, a predetermined torque is applied to the pressure roller. Some are controlled. In such a case, when the thickness of the metal ring is reduced, slippage occurs between the metal ring and the roller in contact with the metal ring.

  The rolling process is performed while changing the rotation speed of the rolling roller. Particularly, when the rotation speed is greatly changed, if a slip occurs between the metal ring and the roller in contact with the metal ring, the product is damaged. There are problems such as sticking, the accuracy of the metal belt thickness decreases, and the life of the rollers decreases.

As a technique for reducing slippage between a rolling material and a roller that conveys the rolling material, for example, in Patent Document 3, in a rolling apparatus for a metal plate, a roller that conveys the rolling material and a rolling material that is conveyed Disclosed is a technology that detects the speed and synchronizes the material speed and the speed of the roller that conveys the rolling material by controlling the torque of the motor that rotates the roller so that these speed ratios are within a predetermined range. Has been.
JP 11-290908 A JP-T-2006-507949 JP 2002-224729 A

  In view of the above prior art, in the present invention, in the rolling process of the endless metal ring, by controlling the rolling roller and the pressure roller to be synchronized, slipping between the roller and the metal ring is suppressed, We propose a technology that can provide a quality metal belt.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, in claim 1, a tension roller around which an endless metal ring is circulated, a rolling roller and a pressure receiving roller for rolling the metal ring interposed therebetween, and pressurizing and rotating the pressure receiving roller toward the rolling roller. A pressure roller to be rotated, a main shaft rotation driving means for rotating the rolling roller, a counter shaft rotation driving means for rotating the pressure roller, the inertia of the pressure roller, and the friction resistance of the pressure roller The thickness of the metal ring is assumed to be substantially constant based on the values of the roller diameter ratio between the rolling roller and the pressure roller and the number of rotations of the rolling roller commanded to the spindle rotation driving means. In order to prevent slippage between the rolling roller and the metal ring, a rotational torque necessary for the pressure roller is obtained, and the counter shaft rotational driving means is rotationally driven by the rotational torque. And control means for controlling so as to, a rolling apparatus comprising.

  According to a second aspect of the present invention, a tension roller around which the endless metal ring is circulated, a rolling roller and a pressure receiving roller for rolling the metal ring interposed therebetween, and a pressure roller that presses and rotates the pressure receiving roller toward the rolling roller side. Measured by a pressure roller, a spindle rotation driving means for rotating the rolling roller, a countershaft rotation driving means for rotating the pressure roller, a thickness measuring means for the metal ring, and a thickness measuring means Based on the respective values of the plate thickness of the metal ring, the roller diameter of the rolling roller, the roller diameter of the pressure roller, and the rotation speed of the rolling roller commanded to the spindle rotation driving means, the rolling In order to prevent slippage between the roller and the metal ring, the rotation speed required for the pressure roller is obtained, and the countershaft rotation driving means is driven to rotate at the rotation speed. And control means for a rolling apparatus comprising.

  According to a third aspect of the present invention, a tension roller around which the endless metal ring is circulated, a rolling roller and a pressure receiving roller for rolling the metal ring interposed therebetween, and a pressure roller that presses and rotates the pressure receiving roller toward the rolling roller. Controlling a pressure roller, a main shaft rotation driving means for rotating the rolling roller, a counter shaft rotation driving means for rotating the pressure roller, a plate thickness measuring means for the metal ring, and the counter shaft rotation driving means Control means, and the control means comprises a plate thickness of the metal ring measured by the plate thickness measuring means, a roller diameter of the rolling roller, a roller diameter of the pressure roller, and the spindle rotation drive. Based on the respective values of the rotation speed of the rolling roller commanded to the means, the rotation speed necessary for the pressure roller to prevent slippage between the rolling roller and the metal ring. The rotational speed control of the pressure roller, the inertia of the pressure roller, the friction resistance of the pressure roller, the rolling roller, and the pressure Based on each value of the roller diameter ratio with the pressure roller and the number of rotations of the rolling roller commanded to the spindle rotation driving means, the thickness of the metal ring is assumed to be substantially constant, and the rolling roller and the metal A rotational torque control of the pressure roller, which obtains a rotational torque necessary for the pressure roller so as not to cause a slip between the ring and the rotational driving means of the secondary shaft by the rotational torque. It is a rolling device that can be switched and executed.

  According to a fourth aspect of the present invention, the control means controls the rotation speed of the pressure roller in one cycle of rolling, and controls the rotation torque of the pressure roller only when the rotation speed of the rolling roller changes. Is what you do.

  According to a fifth aspect of the present invention, in the rolling process of one cycle, the control means controls the number of rotations of the pressure roller in a roughing process that is an initial process, and performs a control of the pressure roller in a finishing process that is a late process. Rotation torque control is performed.

  According to a sixth aspect of the present invention, the plate thickness measuring means is means for measuring the circumference of the metal ring.

  According to a seventh aspect of the present invention, the plate thickness measuring means is a means for measuring an inter-axis distance between the rolling roller and the pressure receiving roller.

  According to an eighth aspect of the present invention, a tension roller around which the endless metal ring is circulated, a rolling roller and a pressure receiving roller for rolling the metal ring interposed therebetween, and a pressure roller that presses and rotates the pressure receiving roller toward the rolling roller side. A pressure roller, a main shaft rotation driving unit that rotates the rolling roller, a sub shaft rotation driving unit that rotates the pressure roller, and a control unit that controls the operation of the sub shaft rotation driving unit. In the rolling processing apparatus, the control means includes an inertia of the pressure roller, a frictional resistance of the pressure roller, a roller diameter ratio between the rolling roller and the pressure roller, and a spindle rotation driving means. Rotational torque required for the pressure roller so as not to cause slippage between the rolling roller and the metal ring based on the commanded values of the rotation speed of the rolling roller Obtained, the sub-shaft rotation driving means rotationally driven by the rotating torque, a rolling method.

  According to a ninth aspect of the present invention, a tension roller around which the endless metal ring is circulated, a rolling roller and a pressure receiving roller for rolling the metal ring interposed therebetween, and a pressure roller that presses and rotates the pressure receiving roller toward the rolling roller side. Operations of a pressure roller, a main shaft rotation driving means for rotating the rolling roller, a counter shaft rotation driving means for rotating the pressure roller, a plate thickness measuring means for the metal ring, and operations of the counter shaft rotation driving means And a control means for controlling at least a rolling processing apparatus, wherein the control means includes a plate thickness of the metal ring measured by the plate thickness measuring means, a roller diameter of the rolling roller, and the pressurization. Based on the respective values of the roller diameter of the roller and the number of rotations of the rolling roller commanded to the spindle rotation driving means, no slip is generated between the rolling roller and the metal ring. To obtain a rotational speed required for the pressure roller in order, the sub-shaft rotation driving means rotationally driven by the rotational speed, a rolling method.

  According to a tenth aspect of the present invention, a tension roller around which the endless metal ring is circulated, a rolling roller and a pressure receiving roller for rolling the metal ring interposed therebetween, and a pressure roller that presses and rotates the pressure receiving roller toward the rolling roller side. Controlling a pressure roller, a main shaft rotation driving means for rotating the rolling roller, a counter shaft rotation driving means for rotating the pressure roller, a plate thickness measuring means for the metal ring, and the counter shaft rotation driving means And a control means that at least includes a metal ring thickness measured by the plate thickness measuring means, a roller diameter of the rolling roller, and a pressure roller. In order to prevent slippage between the rolling roller and the metal ring based on the values of the roller diameter and the rotation speed of the rolling roller commanded to the spindle rotation driving means The rotation speed control of the pressure roller, the rotation of the pressure roller, the inertia of the pressure roller, and the pressure roller, which obtains the rotation speed necessary for the pressure roller, and rotates the counter shaft rotation driving means at the rotation speed. The thickness of the metal ring is approximately reduced based on the friction resistance, the roller diameter ratio between the rolling roller and the pressure roller, and the rotation speed of the rolling roller commanded to the spindle rotation driving means. Assuming that the rolling roller and the metal ring do not slip, the rotation torque required for the pressure roller is obtained so as to prevent slippage between the rolling roller and the countershaft rotation driving means. In this rolling method, the rotation torque control of the pressure roller is switched and executed.

  In claim 11, the control means controls the rotation speed of the pressure roller in one cycle of rolling, and controls the rotation torque of the pressure roller only when the rotation speed of the rolling roller changes. Is what you do.

  In the twelfth aspect, in the rolling process of one cycle, the control means controls the rotation speed of the pressure roller in a roughing process that is an initial process, and controls the pressure roller in a finishing process that is a late process. Rotation torque control is performed.

  As effects of the present invention, the following effects can be obtained.

  ADVANTAGE OF THE INVENTION According to this invention, the slip which arises between the roller which touches metal rings, such as a rolling roller, a tension roller, a support roller, and this metal ring can be reduced. As a result, the metal belt formed by rolling the metal ring during the rolling process is damaged, the plate thickness accuracy of the metal belt is reduced, and the life of the roller is reduced. Can do. Thereby, it can contribute to realization of high-speed manufacture of a high quality endless metal belt (ring).

Next, embodiments of the invention will be described.
FIG. 1 is a plan view showing the configuration of a rolling processing apparatus according to an embodiment of the present invention, FIG. 2 is a side view showing the configuration of the rolling processing apparatus, and FIG. 3 is a block diagram of synchronization control in the rolling processing apparatus.
4 is a block diagram of the tuning control according to the second embodiment, FIG. 5 is a plan view showing the configuration of the rolling processing apparatus according to the second embodiment, and FIG. 6 shows another form of the configuration of the rolling processing apparatus according to the second embodiment. It is a top view.
FIG. 7 is a diagram for explaining the change of the spindle rotation speed and switching of the synchronization control in one cycle of rolling, and FIG. 8 is a diagram for explaining the switching of synchronization control in one cycle of rolling.
FIG. 9 is a block diagram of a conventional rolling machine, and FIG. 10 is a block diagram of a conventional rolling machine.

First, the structure of the rolling processing apparatus 10 which concerns on the Example of this invention is demonstrated.
However, the configuration of the rolling processing apparatus is not limited to this embodiment, and the rolling processing apparatus can be applied to a rolling processing apparatus including at least a rolling roller, a pressure receiving roller, a pressure roller, and a tension roller that circulates a metal ring. it can.

As shown in FIGS. 1 and 2, the rolling device 10 includes a pair of tension rollers 11 and 12 around which an endless metal ring 9 is circulated, and the metal ring 9 interposed therebetween. There are provided at least a rolling roller 20 and a pressure receiving roller (first tension roller 11) for performing the above rolling, and a pressure roller 30 for pressing and rotating the pressure receiving roller.
In the present embodiment, of the pair of tension rollers 11 and 12, the first tension roller 11 functions as a pressure receiving roller, and the metal ring 9 is interposed between the tension roller 11 and the rolling roller 20. By passing, the metal ring 9 is rolled.
The pressure roller 30 is in contact with the tension roller 11 via a pair of support rollers 13 and 13.

At least one of the pair of tension rollers 11 and 12 (in this embodiment, the tension roller 12) is configured to be movable in a direction in which it is separated from or in contact with the other tension roller, and is moved in a direction in which it is separated. A moving drive means is provided. Accordingly, a tensile force can be applied to the metal ring 9 that is circulated between the pair of tension rollers 11 and 12.
A single guide roller or a plurality of guide rollers can be separately provided so that the metal ring 9 can be moved between the tension rollers 11 and 12 without swinging or shifting while the tension is maintained.

  As shown in FIG. 3, the rotating shaft of the rolling roller 20 (hereinafter referred to as “main shaft 21”) is provided with main shaft rotation driving means 22 such as an electric motor, for example. It is forcibly driven by the rotation drive means 22. The spindle rotation driving means 22 is provided with a drive control unit 23 that controls its operation. Further, the main shaft 21 is provided with a rotational speed detection means 24 for detecting the rotational speed (or rotational speed) of the main shaft 21.

  On the other hand, the rotating shaft of the pressure roller 30 (hereinafter referred to as “sub shaft 31”) is provided with a sub shaft rotation driving means 32 such as an electric motor, for example. It is forcibly driven by the drive means 32. The auxiliary shaft rotation driving means 32 is provided with a drive control unit 33 for controlling the operation thereof. Further, the counter shaft 31 is provided with a rotation speed detecting means 34 for detecting the rotation speed (or rotation speed) of the counter shaft 31.

  The drive control unit 23 and the rotational speed detection unit 24 of the main shaft 21, and the drive control unit 33 and the rotational speed detection unit 34 of the auxiliary shaft 31 are connected to the control unit 25. The control means 25 includes a rolling roller 20 and a pressure roller 30 in order to reduce slippage between the metal ring 9 and the rolling roller 20, the tension rollers 11 and 12, and the support rollers 13 and 13 in contact with the metal ring 9. The main shaft rotation driving means 22 and the sub shaft rotation driving means 32 are controlled in order to synchronize the rotation of the main shaft.

  In the control means 25, the ratio between the rotation speed of the main shaft 21 detected by the rotation speed detection means 24 and the rotation speed of the sub shaft 31 detected by the rotation speed detection means 34 is not less than a predetermined value. When the change occurs, processing for stopping the driving of the spindle rotation driving means 22 or the drive control unit 23 or both of them is performed.

  Further, in the rolling processing apparatus 10 having the above-described configuration, the rotation speed detection means 24 of the main shaft 21 and the rotation speed detection means 34 of the auxiliary shaft 31 are provided, respectively, but the rotation speed detection means 24 and the rotation speed detection means 34, or It is also possible to adopt a configuration in which the rotation speed detection means 24 is omitted. That is, the command rotational speed given from the drive control unit 23 to the main shaft rotation driving means 22 is regarded as the rotational speed of the main shaft 21, and the rotational speed of the sub shaft 31 is predicted based on the rotational speed of the main shaft 21, or Only the shaft 31 may be provided with the rotational speed detection means 34 to detect the rotational speed.

In the following first to third embodiments, the synchronization control of the rolling roller 20 and the pressure roller 30 by the control means 25 will be described.
If the following tuning control is carried out by the control means 25, the slip generated between the metal ring 9 and the rollers in contact with the metal ring 9, such as the rolling roller 20, the tension rollers 11 and 12, the support rollers 13 and 13, and the like. Can be reduced. As a result, it is possible to solve the problems that the metal belt, which is a product, is damaged during rolling, the plate thickness accuracy of the metal belt is reduced, and the life of the roller is reduced.

[Rotational torque control of pressure roller 30]
The tuning control by the control means 25 according to the first embodiment of the present invention will be described.
The synchronization control according to the first embodiment performs the synchronization control of the rolling roller 20 and the pressure roller 30 by controlling the rotational torque of the counter shaft 31 that is the rotation shaft of the pressure roller 30.

To the control means 25, the inertia of the pressure roller 30 (inertia) I, the frictional resistance F of the pressure roller 30, the roller diameter ratio between the roller diameter _{r 2} of the roller diameter _{r 1} and the pressure roller 30 of the rolling roller 20 γ and the target rotational speed α of the main shaft 21 are set in advance.
The roller diameter ratio γ is determined on the assumption that the thickness D of the metal ring 9 does not change and is constant.
The target rotational speed α of the main shaft 21 is the rotational speed commanded by the control means 25 to the drive control unit 23 of the main spindle rotation driving means 22 of the main shaft 21 and is based on, for example, a map shown in FIG. It changes over time. In general, in the rolling process, for example, as shown in the map of FIG. 7, acceleration, deceleration, and speed holding of the rotation speed of the rolling roller 20 are controlled according to the processing stage (processing time).

In the above configuration, the control means 25, for example, [Expression 1] shown below, the inertia I of the pressure roller 30, the frictional resistance F of the pressure roller 30, and the rollers of the rolling roller 20 and the pressure roller 30 are as follows. Based on the values of the diameter ratio γ and the target rotational speed α of the main shaft 21, the command rotational torque T of the pressure roller 30 (secondary shaft 31) is calculated assuming that the plate thickness D of the metal ring 9 is substantially constant. Is done. Then, the control means 25 transmits a control signal to the drive control section 33 of the countershaft rotation driving means 32 to drive the pressure roller 30 (subshaft 31) based on the calculated command rotational torque T. .
[Formula 1]
T = I · γα + F

The command rotational torque T is the rotation to be applied to the pressure roller 30 in order to reduce the slip generated between the metal ring 9 and the rolling roller 20, the tension rollers 11 and 12, and the support rollers 13 and 13 in contact with the metal ring 9. Torque.
That is, when the pressure roller 30 is rotated by the command rotational torque T, the peripheral speed of the metal ring 9 and the peripheral speed of the rolling roller 20 become substantially equal at the contact point between the metal ring 9 and the rolling roller 20. is there.

  As described above, in the present embodiment, the control means 25 includes the inertia I of the pressure roller 30, the frictional resistance F of the pressure roller 30, the roller diameter ratio γ between the rolling roller 20 and the pressure roller 30, and the main shaft. Based on the respective values of the target rotational speed α of the rolling roller 20 commanded to the rotation driving means 22, it is assumed that the plate thickness D of the metal ring 9 is substantially constant, and slipping occurs between the rolling roller 20 and the metal ring 9. The command rotation torque T of the pressure roller 30 necessary for preventing the rotation is obtained, and the countershaft rotation drive means 32 is controlled to rotate at the command rotation torque T.

[Rotational speed (rotational speed) control of pressure roller 30]
The tuning control by the control means 25 according to the second embodiment of the present invention will be described.
The synchronization control according to the second embodiment performs the synchronization control of the rolling roller 20 and the pressure roller 30 by controlling the rotation speed (rotation speed) of the counter shaft 31 that is the rotation shaft of the pressure roller 30. It is.

The control unit 25, a roller diameter r ₁ of the rolling roller 20, the roller diameter r ₂ of the pressing roller 30, and the target rotation speed α of the main shaft 21, are set in advance.
The target rotational speed α of the main shaft 21 is a rotational speed commanded by the control means 25 to the drive control section 23 of the main spindle rotation driving means 22, and is based on a time series based on, for example, the map shown in FIG. It will change.

  Further, as shown in FIGS. 4 and 5, the control means 25 is connected to a plate thickness measuring means 40 for measuring the plate thickness D of the metal ring 9.

The plate thickness measuring means 40 measures the displacement of the distance d ₁ between the rotation axes of the pair of tension rollers 11 and 12. More specifically, a displacement measuring means for the rotary shaft of the movable tension roller 12 is provided as the plate thickness measuring means 40.
In the rolling process, the volume is constant even if the plate thickness D of the metal ring 9 changes. Therefore, assuming that the width of the metal ring 9 is constant, the circumference of the metal ring 9 during the rolling process is measured, and the plate thickness D is estimated (calculated). The circumferential length of the metal ring 9 during the rolling process can be calculated from the measured distance d ₁ between the tension rollers 11 and 12, the diameter of the tension rollers 11 and 12, and the width of the metal ring 9. Is possible.

Also, the thickness measuring means 40, as shown in FIG. 6, which detects the displacement of the axis-to-axis distance d ₂ of each of the rotation axis of the rolling roller 20 and a tension roller 11 that holds the metal ring 9 You can also. Specifically, a displacement measuring unit having an inter-axis distance d ₂ between the main shaft 21 that is the rotating shaft of the rolling roller 20 and the rotating shaft of the tension roller 11 is provided as the plate thickness measuring unit 40. In this case, the main shaft 21 is a rotation shaft of the rolling roller 20, the displacement of the center distance d ₂ between the rotation axis of the tension roller 11, i.e., the displacement of the thickness D of the metal ring 9, directly metal The plate thickness D of the ring 9 will be measured.

  As the displacement measuring means, for example, any one or a combination of an eddy current displacement meter, an optical displacement meter, an ultrasonic displacement meter, and a contact displacement meter can be adopted. There is no limitation on the type and configuration of the. However, since high accuracy and fast response speed are required, it is desirable to employ an eddy current displacement meter or an optical displacement meter.

In the above configuration, the control unit 25, the control unit 25 includes a roller diameter r ₁ of the rolling roller 20, the roller diameter r ₂ of the pressing roller 30, the target rotation number α of the main shaft 21, a plate of metal ring 9 From the thickness D, the command rotational speed N of the countershaft 31 is calculated. Then, the control means 25 transmits a control signal to the drive control section 33 of the countershaft rotation drive means 32 to drive the pressure roller 30 (subshaft 31) to rotate based on the calculated command rotational speed N. .

The command rotational speed N is the rotation of the pressure roller 30 suitable for reducing the slip generated between the metal ring 9 and the rolling roller 20, the tension rollers 11 and 12, and the support rollers 13 and 13 in contact with the metal ring 9. Number (rotational speed).
That is, when the pressure roller 30 rotates at the command rotational speed N, the peripheral speed of the metal ring 9 and the peripheral speed of the rolling roller 20 become substantially equal at the contact point between the metal ring 9 and the rolling roller 20. It is.

As described above, the control means 25 in this embodiment, the thickness D of the metal ring 9 obtained by the plate thickness measuring means 40, a roller diameter r ₁ of the rolling roller 20, the pressure roller 30 and a roller diameter r _2, on the basis of the values of the target rotational speed α of the rolling roller 20 for commanding the spindle rotation drive unit 22, does not cause slippage between the rolling roller 20 and the metal ring 9 The command rotational speed N of the pressure roller 30 necessary for this is obtained, and the countershaft rotational drive means is controlled to rotate at the command rotational speed N.

In addition, a map for specifying the time change of the thickness D of the metal ring 9 in the rolling cycle obtained experimentally is created and set in the control means 25, and the control means 25 sets the thickness measuring means 40. It is also possible to obtain the value of the plate thickness D of the metal ring 9 without using it and calculate the command rotational speed N of the countershaft 31 as described above.
Further, a map for specifying the time change of the command rotational speed N of the countershaft 31 in the rolling cycle is created from the map for specifying the time change of the plate thickness D of the metal ring 9 in the rolling cycle obtained experimentally. This is set in the control means 25, and the control means 25 is configured to transmit a control signal to the drive control unit 33 of the auxiliary shaft rotation driving means 32 to rotationally drive the auxiliary shaft 31 based on the map. You can also

[Combination of rotational torque control and rotational speed control of pressure roller 30]
The tuning control by the control means 25 according to the third embodiment of the present invention will be described.
The control means 25 according to the third embodiment controls the rotational torque of the pressure roller 30 described in the first embodiment (hereinafter simply referred to as “rotational torque control”) and the pressure described in the second embodiment. The rotational speed control of the roller 30 (hereinafter simply referred to as “rotational speed control”) can be switched and executed in one cycle of rolling. The tuning control by the control means 25 is a combination of the rotational torque control and the rotational speed control.

  As shown in FIG. 7, in the rolling process of one cycle, the rotational speed of the rolling roller 20 was rapidly increased to a predetermined value while applying tension and rolling force to the metal ring 9 by the tension rollers 11 and 12. In addition, a roughing process to be held and a finishing process to reduce the rotation speed of the rolling roller 20 step by step are performed.

  In the rolling process of one cycle described above, the control means 25, as a general rule, performs rotational torque control when measurement (estimation) of the plate thickness D of the metal ring 9 is difficult and accuracy is low, and otherwise, the rotational speed is controlled. Tuning control is switched so that control is performed.

  As synchronous control of the rolling roller 20 and the pressure roller 30, for example, as shown in FIG. 7, in one cycle of rolling processing, rough machining is an initial process in which the change in the thickness D of the metal ring 9 is relatively large. In the process, the control means 25 performs rotational speed control, and the control means 25 performs rotational torque control in the finishing process, which is a late process in which the change in the plate thickness D of the metal ring 9 is relatively small.

  Further, as synchronous control of the rolling roller 20 and the pressure roller 30, for example, as shown in FIG. 8, the rotation of the rolling roller 20 is controlled based on the rotational speed control of the pressure roller 30 in one cycle of rolling. The rotational torque control may be performed only in a transient region where the number, the rolling force of the rolling roller 20 and the tensile force by the tension rollers 11 and 12 change relatively greatly.

  By switching the synchronous control of the rolling roller 20 and the pressure roller 30 between the rotational torque control and the rotational speed control as described above, the rolling roller 20, the tension rollers 11 and 12, the support roller 13. The slip generated between the metal ring 9 and the roller in contact with the metal ring 9 such as 13 can be reduced.

The top view which shows the structure of the rolling processing apparatus which concerns on the Example of this invention. The side view which shows the structure of a rolling processing apparatus. The block diagram of synchronous control in a rolling processing apparatus. FIG. 6 is a block diagram of tuning control according to the second embodiment. FIG. 6 is a plan view illustrating a configuration of a rolling processing apparatus according to a second embodiment. The top view which shows another form of a structure of the rolling processing apparatus which concerns on Example 2. FIG. The figure explaining the change of the spindle speed in one cycle of rolling, and switching of synchronous control. The figure explaining switching of synchronous control in 1 cycle of rolling. The block diagram of the conventional rolling processing apparatus. The block diagram of the conventional rolling processing apparatus.

Explanation of symbols

9 Metal ring 10 Rolling machine 11 Tension roller (pressure receiving roller)
DESCRIPTION OF SYMBOLS 12 Tension roller 13 Support roller 20 Rolling roller 21 Main shaft 22 Main shaft rotation drive means 23 Drive control part 24 Rotation number detection means 25 Control apparatus 30 Pressure roller 31 Sub shaft 32 Sub shaft rotation drive means 33 Drive control part 34 Rotation number detection means

Claims (12)

A tension roller around which an endless metal ring is circulated;
A rolling roller and a pressure receiving roller for rolling the metal ring interposed therebetween,
A pressure roller for pressing and rotating the pressure receiving roller toward the rolling roller;
A spindle rotation driving means for rotating the rolling roller;
A counter shaft rotation driving means for rotating the pressure roller;
Values of the inertia of the pressure roller, the frictional resistance of the pressure roller, the roller diameter ratio between the rolling roller and the pressure roller, and the rotation speed of the rolling roller commanded to the spindle rotation driving means Based on the above, assuming that the plate thickness of the metal ring is substantially constant, a rotational torque necessary for the pressure roller is obtained so as not to cause a slip between the rolling roller and the metal ring, and the countershaft Control means for controlling the rotational drive means to rotationally drive with the rotational torque;
A rolling processing apparatus comprising the rolling processing apparatus. A tension roller around which an endless metal ring is circulated;
A rolling roller and a pressure receiving roller for rolling the metal ring interposed therebetween,
A pressure roller for pressing and rotating the pressure receiving roller toward the rolling roller;
A spindle rotation driving means for rotating the rolling roller;
A counter shaft rotation driving means for rotating the pressure roller;
Means for measuring the thickness of the metal ring;
The metal ring thickness measured by the plate thickness measuring means, the roller diameter of the rolling roller, the roller diameter of the pressure roller, and the rotation speed of the rolling roller commanded to the spindle rotation driving means. Based on each value, the rotation speed necessary for the pressure roller is obtained so as not to cause a slip between the rolling roller and the metal ring, and the counter shaft rotation driving means is rotated at the rotation speed. Control means for controlling to
A rolling processing apparatus comprising the rolling processing apparatus. A tension roller around which an endless metal ring is circulated;
A rolling roller and a pressure receiving roller for rolling the metal ring interposed therebetween,
A pressure roller for pressing and rotating the pressure receiving roller toward the rolling roller;
A spindle rotation driving means for rotating the rolling roller;
A counter shaft rotation driving means for rotating the pressure roller;
Means for measuring the thickness of the metal ring;
Control means for controlling the auxiliary shaft rotation drive means,
The control means includes
The metal ring thickness measured by the plate thickness measuring means, the roller diameter of the rolling roller, the roller diameter of the pressure roller, and the rotation speed of the rolling roller commanded to the spindle rotation driving means. Based on each value, the rotation speed necessary for the pressure roller is obtained so as not to cause a slip between the rolling roller and the metal ring, and the counter shaft rotation driving means is rotated at the rotation speed. Control the number of rotations of the pressure roller,
Values of the inertia of the pressure roller, the frictional resistance of the pressure roller, the roller diameter ratio between the rolling roller and the pressure roller, and the rotation speed of the rolling roller commanded to the spindle rotation driving means Based on the above, assuming that the plate thickness of the metal ring is substantially constant, a rotational torque necessary for the pressure roller is obtained so as not to cause a slip between the rolling roller and the metal ring, and the countershaft Rotational torque control of the pressure roller, which rotationally drives the rotational drive means with the rotational torque,
A rolling device that can be switched and executed. The control means controls the rotational speed of the pressure roller in one cycle of rolling, and performs the rotational torque control of the pressure roller only when the rotational speed of the rolling roller changes. ,
The rolling processing apparatus according to claim 3. In the rolling process of one cycle, the control means controls the rotation speed of the pressure roller in a roughing process that is an initial process, and controls the rotational torque of the pressure roller in a finishing process that is a later process. Characterized by the
The rolling processing apparatus according to claim 3. The plate thickness measuring means is a means for measuring the circumference of the metal ring,
The rolling processing apparatus of Claim 2 or Claim 3. The plate thickness measuring means is a means for measuring an inter-axis distance between the rolling roller and the pressure receiving roller,
The rolling processing apparatus of Claim 2 or Claim 3. A tension roller around which an endless metal ring is circulated, a rolling roller and a pressure receiving roller for rolling the metal ring interposed therebetween, a pressure roller for pressing and rotating the pressure receiving roller toward the rolling roller, and the rolling In a rolling processing apparatus comprising at least a main shaft rotation driving unit for rotating the roller, a sub shaft rotation driving unit for rotating the pressure roller, and a control unit for controlling the operation of the sub shaft rotation driving unit. ,
The control means includes
Values of the inertia of the pressure roller, the frictional resistance of the pressure roller, the roller diameter ratio between the rolling roller and the pressure roller, and the rotation speed of the rolling roller commanded to the spindle rotation driving means To obtain a rotational torque necessary for the pressure roller so as not to cause a slip between the rolling roller and the metal ring, and rotationally drive the countershaft rotational driving means with the rotational torque. Characterized by
Rolling method. A tension roller around which an endless metal ring is circulated, a rolling roller and a pressure receiving roller for rolling the metal ring interposed therebetween, a pressure roller for pressing and rotating the pressure receiving roller toward the rolling roller, and the rolling A main shaft rotation driving means for rotating the roller, a counter shaft rotation driving means for rotating the pressure roller, a plate thickness measuring means for the metal ring, and a control means for controlling the operation of the counter shaft rotation driving means. At least in a rolling machine equipped with
The control means includes
The metal ring thickness measured by the plate thickness measuring means, the roller diameter of the rolling roller, the roller diameter of the pressure roller, and the rotation speed of the rolling roller commanded to the spindle rotation driving means. Based on each value, the rotation speed necessary for the pressure roller is obtained so as not to cause a slip between the rolling roller and the metal ring, and the counter shaft rotation driving means is rotated at the rotation speed. Characterized by
Rolling method. A tension roller around which an endless metal ring is circulated;
A rolling roller and a pressure receiving roller for rolling the metal ring interposed therebetween,
A pressure roller for pressing and rotating the pressure receiving roller toward the rolling roller;
A spindle rotation driving means for rotating the rolling roller;
A counter shaft rotation driving means for rotating the pressure roller;
Means for measuring the thickness of the metal ring;
Control means for controlling the countershaft rotation drive means, at least with a rolling processing apparatus,
The control means includes
The metal ring thickness measured by the plate thickness measuring means, the roller diameter of the rolling roller, the roller diameter of the pressure roller, and the rotation speed of the rolling roller commanded to the spindle rotation driving means. Based on each value, the rotation speed necessary for the pressure roller is obtained so as not to cause a slip between the rolling roller and the metal ring, and the counter shaft rotation driving means is rotated at the rotation speed. Control the number of rotations of the pressure roller,
Values of the inertia of the pressure roller, the frictional resistance of the pressure roller, the roller diameter ratio between the rolling roller and the pressure roller, and the rotation speed of the rolling roller commanded to the spindle rotation driving means Based on the above, assuming that the plate thickness of the metal ring is substantially constant, a rotational torque necessary for the pressure roller is obtained so as not to cause a slip between the rolling roller and the metal ring, and the countershaft Rotational torque control of the pressure roller, which rotationally drives the rotational drive means with the rotational torque,
A rolling method, which is performed by switching. The control means controls the rotational speed of the pressure roller in one cycle of rolling, and performs the rotational torque control of the pressure roller only when the rotational speed of the rolling roller changes. ,
The rolling method according to claim 10. In the rolling process of one cycle, the control means controls the rotation speed of the pressure roller in a roughing process that is an initial process, and controls the rotational torque of the pressure roller in a finishing process that is a later process. Characterized by the
The rolling method according to claim 10.

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