Automatic positioning control method for main transmission of rolling mill

Abstract

The invention relates to a rolling mill main transmission automatic positioning control method. The method comprises the steps that an encoder is used for collecting the actual rotor angle position of a main shaft rotating system; acquiring a rotor angle setting position; and when the difference value between the actual position value of the rotor angle and the set position value of the rotor angle is within + / -deviation value, the main shaft rotating system is positioned to a roller changing position, and a worker is reminded to carry out roller changing operation. The encoder is used for monitoring the angle of the rotor in real time, it can be ensured that the main shaft is accurately positioned to the set position, and the problem of inaccurate positioning caused by manual errors is solved.

Description

Technical Field

[0001] The invention relates to the technical field of rolling mills, and in particular to an automatic positioning control method for a main transmission of a rolling mill. Background Art

[0002] At present, the tandem rolling mill needs to replace the roll group when changing product varieties or when the rolls are aged. Since the flat shaft is used between the connecting rod and the roll of the rolling mill, the spindle must be stopped at a fixed position each time the roll is changed before the roll group can be pulled out of the rolling mill. The existing spindle positioning adopts the method of proximity switch sensing the baffle installed above the spindle for positioning. Due to the harsh environment around the rolling mill, this method has the problems of easy damage of electrical circuits and oil pollution affecting positioning accuracy, resulting in the inability of automatic positioning to proceed normally. Summary of the invention

[0003] In order to solve the above problems, an embodiment of the present invention aims to provide a method for automatic positioning control of a main transmission of a rolling mill.

[0004] A rolling mill main drive automatic positioning control method, comprising:

[0005] Step 1: Use the encoder to collect the actual rotor angle position of the main shaft rotation system;

[0006] Step 2: Get the rotor angle setting position;

[0007] Step 3: When the difference between the actual position value of the rotor angle and the set position value of the rotor angle is within the ± deviation value, the spindle rotation system is positioned to the roll changing position to remind the staff to perform the roll changing operation.

[0008] Preferably, in step 1, it includes:

[0009] The actual rotor angle position acquired by the encoder value is input to the ACT-POS pin in real time.

[0010] Preferably, in step 2, it includes:

[0011] The rotor angle set position is input into the SET-POS pin.

[0012] Preferably, in step 3, it includes:

[0013] The deviation value is input into the OFFSET pin. When the difference between the actual rotor angle position value and the set rotor angle position value is within ± the deviation value, the ON-POS pin is used to output the spindle rotation system to locate the roller changing position information to remind the staff to perform the roller changing operation.

[0014] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0015] The invention relates to an automatic positioning control method for a rolling mill main drive. Compared with the prior art, the invention can ensure that the main shaft is accurately positioned to a set position by using an encoder to monitor the rotor angle in real time, thereby reducing the problem of inaccurate positioning caused by manual errors.

[0016] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the function block functional module provided by the present invention. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] A rolling mill main drive automatic positioning control method, comprising:

[0023] Step 1: Use the encoder to collect the actual rotor angle position of the spindle rotation system

[0024] Step 2: Get the rotor angle setting position;

[0025] Step 3: When the difference between the actual position value of the rotor angle and the set position value of the rotor angle is within the ± deviation value, the spindle rotation system is positioned to the roll changing position to remind the staff to perform the roll changing operation.

[0026] In practical applications, communication is first established, and the rotor angle of the main drive is sent to the first-level PLC through DP communication through programming software. This makes it convenient to use the analysis function of the data analysis software to compare the corresponding relationship between the rotor angle and the proximity switch. Then, combine it with online monitoring of the main drive rotor angle position. Finally, design and write a program to calculate the angle window so that the spindle completes positioning when the angle window corresponds to the position of the proximity switch. Then combine the software to analyze the corresponding position of the angle window and the proximity switch, and fine-tune the deviation of the angle window to make the accuracy more accurate. Figure 1 As shown, the EN pin is the enable pin. When the EN pin is 1, the function block can work; the SET-POS pin is the rotor angle setting position; the ACT-POS pin is the actual rotor angle position; the OFFSET pin is the deviation angle adjustment; and the ON-POS pin is the position arrival signal. The set value is input into the SET-POS pin, the encoder value on the main drive motor is input into the ACT-POS pin in real time, and the deviation value of the fine-tuning angle window is input into the OFFSET pin. If the difference between the actual position value of the rotor angle and the set position value of the rotor angle is within the ± deviation value, the ON-POS pin is output. At this time, the spindle is positioned to the roller changing position, and the roller changing operation can be performed. In order to facilitate the on-site employees to perform the roller changing operation, the present invention also produces a human-machine interface screen. By checking the spindle angle positioning option on the screen, the positioning method designed by the present invention can be selected.

[0027] The present invention can ensure that the main shaft is accurately positioned at a set position by using an encoder to monitor the rotor angle in real time, thereby reducing the problem of inaccurate positioning caused by human errors.

[0028] The present invention also provides a computer-readable storage medium having a computer program stored thereon, characterized in that when the computer program is executed by a processor, the steps in the above-mentioned method for automatic positioning control of a rolling mill main drive are implemented. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present invention are the same as the beneficial effects of the method for automatic positioning control of a rolling mill main drive described in the above-mentioned technical scheme, which will not be repeated here.

[0029] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technical solution that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A rolling mill main drive automatic positioning control method, characterized in that: include: Step 1: Use the encoder to collect the actual rotor angle position of the main shaft rotation system; Step 2: Get the rotor angle setting position; Step 3: When the difference between the actual position value of the rotor angle and the set position value of the rotor angle is within the ± deviation value, the spindle rotation system is positioned to the roll changing position to remind the staff to perform the roll changing operation.

2. The automatic positioning control method for the main transmission of a rolling mill according to claim 1 is characterized in that: In step 1, it includes: The actual rotor angle position acquired by the encoder value is input to the ACT-POS pin in real time.

3. The automatic positioning control method for the main transmission of a rolling mill according to claim 2 is characterized in that: In the step 2, it includes: The rotor angle set position is input into the SET-POS pin.

4. The automatic positioning control method for the main transmission of a rolling mill according to claim 3 is characterized in that: In step 3, it includes: The deviation value is input into the OFFSET pin. When the difference between the actual rotor angle position value and the set rotor angle position value is within ± the deviation value, the ON-POS pin is used to output the spindle rotation system to locate the roller changing position information to remind the staff to perform the roller changing operation.

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