Disc shear cutter head overlap amount regulation control method
A control method and technology of overlapping amount, which is applied in the direction of shearing machine control device, electrical program control, program control in sequence/logic controller, etc., can solve the problem of failing to meet the precision requirements of disc shears, and it is difficult to improve the adjustment of overlapping amount Accuracy, large overlap adjustment error and other issues, to achieve the effect of easy and precise control
Inactive Publication Date: 2008-03-19
CHINA NAT HEAVY MACHINERY RES INSTCO
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In fact, the change of the rotation angle of the eccentric sleeve and the change of the overlap amount are in a nonlinear relationship. If the control is carried out according to the linear change, the error of the adjustment of the overlap amount will be very large, which cannot meet the accuracy requirements for the adjustment of the overlap amount of the disc shears.
[0003] In addition, there are many factors that affect the accuracy of the overlapping amount, such as the speed ratio of the mechanical transmission mechanism, motor parameters (including rated power, rated speed, etc.), inverter parameters (including high-speed given frequency, low-speed given frequency, deceleration time, etc.) and control methods, it is difficult to improve the adjustment accuracy of the overlapping amount by considering only one aspect
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[0021] Fig. 1 is a principle diagram of adjusting the overlapping amount of disc shears in the present invention. It can be seen from the figure that the control model of disc scissor disc overlap is:
[0022] δ=Φ-H-2RCOSα
[0023] In the formula, δ is the overlap amount of the cutter head (when the cutter head overlap is defined as positive, δ>0, and when the cutter head overlap is negative, δ<0); Φ is the diameter of the cutter head; H is the upper and lower eccentric sleeves of the frame The center distance of the outer circle; R is the eccentric distance of the eccentric sleeve; α is the rotation angle of the eccentric sleeve (it is defined as 0° when the eccentric sleeve is at the highest position, and the adjustment range of the overlapping amount is 0°~180°).
[0024] Taking the derivative of δ(α) on the above formula, we can get
[0025] δ'=2RSin α
[0026] In the formula, δ' is the derivative of overlap.
[0027] As shown in Figure 2, the relationship curve betwee...
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The present invention relates to an adjusting and control method for device in a plate-strip shear line, in particular to an adjusting and control method for the overlapping value of the disk-shaped scissors plate; the present invention uses the frequency conversion and viable speed control system to achieve the control of the overlapping value of the disk-shaped scissors plate; and by the present invention, the absolute value of the difference value between the target value of the overlapping value and the measuring overlapping value of a displacement sensor can be compared with the ahead value L of the motor at the beginning of speeding down; through using the rotating speed of the control motor of the frequency convertor, the absolute value of the difference value between the target value and real overlapping value can be controlled to be equal to or less than 0.02mm. The adjusting and control method for the overlapping value of the disk-shaped scissors plate is time-saving, and has high control accuracy.
Description
technical field [0001] The invention relates to a method for adjusting and controlling equipment in a strip shearing line, specifically a method for adjusting and controlling the overlapping amount of disk scissors. Background technique [0002] Disc shearing machine is the key equipment in the strip shearing line, mainly used for edge trimming and slitting of metal strips. In high-quality strip shearing lines, high requirements are placed on the trimming quality (burrs, indentations, etc.) of the finished strip. If the adjustment of the disc shears does not meet the precision required by the shearing process, it will cause poor trimming quality of the strip and the problem of strip deviation. Therefore, the process requires that the disc shear width, side clearance and overlap must be increased. The accuracy of the adjustment, and the adjustment control of the amount of overlap is the most complicated. The patent number is "200610081425.5", and the title of the invention ...
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IPC IPC(8): G05B19/04B23D36/00
Inventor 许展望张勇安景群平周德奇
Owner CHINA NAT HEAVY MACHINERY RES INSTCO
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