CN100495263C - Disc shear cutter head overlap amount regulation control method - Google Patents
Disc shear cutter head overlap amount regulation control method Download PDFInfo
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- CN100495263C CN100495263C CNB2007100189600A CN200710018960A CN100495263C CN 100495263 C CN100495263 C CN 100495263C CN B2007100189600 A CNB2007100189600 A CN B2007100189600A CN 200710018960 A CN200710018960 A CN 200710018960A CN 100495263 C CN100495263 C CN 100495263C
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000006073 displacement reaction Methods 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000009966 trimming Methods 0.000 description 3
- 238000013178 mathematical model Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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Abstract
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
The present invention relates to the adjustment control method of equipment in a kind of strip shear line, the adjustment control method of a kind of disc shear cutter head lap of definitely saying so.
Background technology
Metal-slitting machine is the key equipment in the strip shear line, is mainly used in the side cut and the itemize of sheet metal strip.In high-quality band shear line, higher requirement has been proposed for the trimming quality (burr, impression etc.) of finished product band.If the adjustment of circle shear does not reach the precision of shearing technological requirement, will cause the trimming quality difference of band and the problem of band sideslip, therefore just require on the technology to improve the precision that circle shear width, side clearance and lap are adjusted, and wherein the adjustment of lap control is the most complicated.The patent No. is " 200610081425.5 ", and denomination of invention is " device and method of adjusting gap of shear of disc shearing machine ", discloses a kind of adjustment that utilizes eccentric bushing to realize blade lap radially.This method is according to the anglec of rotation of eccentric bushing and the precision control of lap linear change realization lap.In fact, the anglec of rotation of eccentric bushing changes and changes with lap is nonlinear relationship, if control according to linear change, the error that lap is adjusted is just very big, does not reach the accuracy requirement that circle shear overlying quantity is adjusted.
In addition, it is a lot of to influence the lap factors of accuracy, as the parameter (comprising the given frequency of high speed, the given frequency of low speed, deceleration time etc.) and the control method of the speed ratio of mechanical transmission mechanism, the parameter of electric machine (comprising rated power, rated speed etc.), frequency converter, Dan Congyi aspect considers it is the adjustment precision that is difficult to improve lap.
Summary of the invention
The adjustment control method that the purpose of this invention is to provide the disc shear cutter head lap that a kind of adjustment saves time, control accuracy is high.
The object of the present invention is achieved like this, a kind of adjustment control method of disc shear cutter head lap, it is characterized in that: it adopts frequency-converting speed-governing control system to realize the control of disc shear cutter head lap, by Programmable Logic Controller the absolute value of the measurement lap difference of the desired value of lap and displacement transducer and the motor lead L that reduces speed now is compared, utilize the Frequency Converter Control rotating speed of motor, make the absolute value≤0.02mm of desired value and actual lap difference.
The described motor lead L=Asin α+B that reduces speed now
In the formula, L is the motor lead that reduces speed now; α is the eccentric bushing anglec of rotation; A is the slope coefficient of braking section; B is the offset of low speed segment range ability.
Described Frequency Converter Control rotating speed of motor is: when L＜| lap desired value δ
0The measurement lap δ of-displacement transducer
s| the time, the adjustment motor high-speed cruising of lap; When L 〉=| lap desired value δ
0The measurement lap δ of-displacement transducer
s| the time, the adjustment motor of lap begins by high deceleration to low speed; When | lap desired value δ
0The measurement lap δ of-displacement transducer
s| during≤0.02mm, the adjustment motor of lap by low-range reduction to stopping.
Described lap desired value δ
0Be by the decision of the relation of lap and thickness of strip;
When 0.3mm≤d≤1.3412mm, δ
0=0.5d;
When 1.3412mm＜d≤3.0mm, δ
0=-0.2727d+1.0364;
In the formula, d is a thickness of strip.
The slope coefficient A of described braking section, during for 0.3mm≤thickness of strip d≤3.0mm, the span of A is 0.1mm～0.8mm.
The offset B of described low speed segment range ability, during for 0.3mm≤thickness of strip d≤3.0mm, the span of B is 0.01mm～0.3mm.
Because it is short to stand-by time by low speed that lap is adjusted motor, accurately control easily, so before lap arrived desired value, the speed of motor will decelerate to low speed, if motor slows down too late, control accuracy can reduce; If motor slows down too early, the slow running section is oversize, and the adjustment time will be elongated.The motor lead L=Asin α+B formula that reduces speed now, calculate the motor lead L that reduces speed now by the real-time corner of eccentric bushing, good treatment control accuracy and adjust the contradiction of time, finally solve the band trimming quality poor, adjust key technical problems such as time-consuming and easy sideslip.
The present invention is described in detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is that circle shear overlying quantity of the present invention is adjusted schematic diagram;
Fig. 2 is the graph of relation of the lap derivative of the present invention (δ ') and the eccentric bushing anglec of rotation (α);
Fig. 3 is a circle shear overlying quantity control system block diagram of the present invention;
Fig. 4 is the given speed (V) and the graph of relation of time (t) of frequency converter of the present invention.
Among the figure: 1. at a high speed, 2. deceleration point, 3. low speed.
Embodiment
Fig. 1 is that circle shear overlying quantity of the present invention is adjusted schematic diagram.The controlling models of disc shear cutter head lap is as seen from the figure:
δ＝Φ-H-2RCOS?α
In the formula, δ is the lap (the definition cutterhead is overlapping for timing, δ〉0, cutterhead is overlapping when negative, δ＜0) of cutterhead; Φ is the diameter of cutterhead; H is the cylindrical of the eccentric bushing up and down centre distance of frame; R is the eccentric throw of eccentric bushing; α is the anglec of rotation (the definition eccentric bushing is 0 ° when the extreme higher position, the setting range of lap is 0 °～180 °) of eccentric bushing.
Following formula is carried out δ (α) differentiate, can get
δ′＝2RSin?α
In the formula, δ ' is the lap derivative.
Be illustrated in figure 2 as the relation curve of lap derivative (δ ') and angle (α), from curve as can be seen: the lap eccentric bushing anglec of rotation changes and changes with lap is nonlinear relationship, eccentric bushing anglec of rotation α is when 0 ° → 90 ° change, and the rate of change of lap δ is increasing; α is when 90 ° → 180 ° change, and the rate of change of lap δ is more and more littler.So in disc shear cutter head lap control, must consider the residing angle of eccentric bushing, if anglec of rotation α near 90 °, motor slows down too late, the control accuracy of lap can reduce; If anglec of rotation α is far away from 90 °, motor slows down too early, and the slow running section is oversize, and lap is adjusted the time will be elongated, want the processing controls precision and adjust the contradiction of time, will consider because the problem of deceleration point variation during the different Electric Machine Control that causes of the real-time corner of eccentric bushing.
As shown in Figure 3, can reflect from circle shear overlying quantity control system block diagram and the present invention includes following steps:
1) adopt frequency-converting speed-governing control system to realize the control of disc shear cutter head lap, the anglec of rotation of Electric Machine Control load (eccentric bushing) realizes the lap adjustment.
Parameters such as the thickness d of host computer transmission band, cutter diameter Φ are given Programmable Logic Controller when 2) beginning, and Programmable Logic Controller goes out the desired value δ 0 of lap according to calculated with mathematical model.
3) Programmable Logic Controller is right | lap desired value δ
0The measurement lap δ of-displacement transducer
s| compare with the motor lead L that reduces speed now,, improve the precision of lap control, make the absolute value≤0.02mm of desired value and actual lap difference by the Frequency Converter Control rotating speed of motor.
The motor lead L=Asin α+B that reduces speed now
In the formula, L is the motor lead that reduces speed now; α is the eccentric bushing anglec of rotation; A is the slope coefficient of braking section; B is the offset of low speed segment range ability.
The Frequency Converter Control rotating speed of motor needs to consider among the present invention: when L＜| lap desired value δ
0The measurement lap δ of-displacement transducer
s| the time, the adjustment motor high-speed cruising of lap; When L 〉=| lap desired value δ
0The measurement lap δ of-displacement transducer
s| the time, the adjustment motor of lap begins by high deceleration to low speed; When | lap desired value δ
0The measurement lap δ of-displacement transducer
s| during≤0.02mm, the adjustment motor of lap by low-range reduction to stopping.
According to technology, the desired value δ 0 of lap and the pass of thickness of strip d are:
When 0.3mm≤d≤1.3412mm, get δ 0=0.5d;
When 1.3412mm＜d≤3.0mm, get δ 0=-0.2727d+1.0364;
In the formula, d is a thickness of strip.
Be illustrated in figure 4 as the given speed (V) and the relation curve of time (t) of frequency converter, dash area is that lap is adjusted the motor lead L that reduces speed now among the figure.When the Frequency Converter Control lap is adjusted motor,,, do not decelerate to low speed 3 and just arrived the lap desired value, and reduce the precision of lap control if motor is slowed down too late by high speed 1 because the deceleration slope is certain; If motor is slowed down too early by high speed 1, motor low speed is oversize 3 working times, adjusts the time and increased lap, so it is very crucial to select suitable lap to adjust motor deceleration point 2.
By above analysis, provide the reduce speed now formula of lead of following motor:
L＝Asin?α+B
Controlling models formula δ=Φ-H-2RCOS α by the disc shear cutter head lap can get
α＝COS
-1[(Φ-H-δ
s)/2R]
So
L＝A{1-[(Φ-H-δ
s)/2R]
2}
1/2+B
In the formula, L is the motor lead that reduces speed now; δ
sMeasurement lap for displacement transducer; A is the slope coefficient of braking section, during for 0.3mm≤thickness of strip d≤3.0mm, the span of A is 0.1mm～0.8mm, speed ratio, the parameter of electric machine and the converter parameter etc. of adjusting gear train with the disc shear cutter head lap are relevant, speed ratio is big more, the A value is more little, and motor rated power is big more, rated speed is high more, the given frequency of frequency converter is high more, frequency converter is long more deceleration time, and the A value is big more.B is the offset of low speed segment range ability, and during for 0.3mm≤thickness of strip d≤3.0mm, the span of B is 0.01mm～0.3mm, and here, the existence of B makes motor that can be arranged one period transit time when slow running, guarantees the lap control accuracy.
Table 1 is 320mm and 294mm for adopting this lap control method at cutter diameter, and A gets 0.3, B gets 0.1 o'clock measured data table.
Table 1
Cutterhead lap working control precision is in 0.01mm as can be seen from Table 1.
Method of the present invention adopts frequency-converting speed-governing control system to realize the adjustment control of disc shear cutter head lap, analyzed the mathematical model of disc shear cutter head lap control, consider that the lap eccentric bushing anglec of rotation changes the nonlinear relationship that changes with lap, and control accuracy that in control, exists and the contradiction of the time of adjustment, combining influences all multifactor of disc shear cutter head lap adjustment precision, sum up the control lap and adjusted the reduce speed now formula of lead of motor, two key parameters have been introduced, make control accuracy reach 0.02mm, thereby the adjustment control that has realized the disc shear cutter head lap save time, the purpose that control accuracy is high.
Claims (1)
1, a kind of adjustment control method of disc shear cutter head lap, it is characterized in that: it adopts frequency-converting speed-governing control system to realize the control of disc shear cutter head lap, by Programmable Logic Controller the absolute value of the measurement lap difference of the desired value of lap and displacement transducer and the motor lead L that reduces speed now is compared, utilize the Frequency Converter Control rotating speed of motor, make the absolute value≤0.02mm of desired value and actual lap difference; Motor reduces speed now in lead L=Asin α+B formula: L is the motor lead that reduces speed now, and α is the eccentric bushing anglec of rotation, and A is the slope coefficient of braking section, and B is the offset of low speed segment range ability; The Frequency Converter Control rotating speed of motor is: when L＜| the desired value δ of lap
0The measurement lap δ of-displacement transducer
s| the time, the adjustment motor high-speed cruising of lap; When L 〉=| the desired value δ of lap
0The measurement lap δ of-displacement transducer
s| the time, the adjustment motor of lap begins by high deceleration to low speed; When | the desired value δ of lap
0The measurement lap δ of-displacement transducer
s| during≤0.02mm, the adjustment motor of lap by low-range reduction to stopping; The desired value δ of lap
0Be by the decision of the relation of lap and thickness of strip d, when 0.3mm≤thickness of strip d≤1.3412mm, δ
0=0.5d, when 1.3412mm＜thickness of strip d≤3.0mm, δ
0In the=-0.2727d+1.0364 formula: d is a thickness of strip; The slope coefficient A of described braking section, during for 0.3mm≤thickness of strip d≤3.0mm, the span of A is 0.1mm～0.8mm; The offset B of low speed segment range ability, during for 0.3mm≤thickness of strip d≤3.0mm, the span of B is 0.01mm～0.3mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100189600A CN100495263C (en) | 2007-10-29 | 2007-10-29 | Disc shear cutter head overlap amount regulation control method |
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|---|---|---|---|
| CNB2007100189600A CN100495263C (en) | 2007-10-29 | 2007-10-29 | Disc shear cutter head overlap amount regulation control method |
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| CN100495263C true CN100495263C (en) | 2009-06-03 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780562B (en) * | 2010-03-08 | 2013-10-23 | 北方工业大学 | Device and method for adjusting gap of shear of disc shearing machine |
| CN102489772B (en) * | 2011-12-27 | 2014-07-23 | 中冶赛迪工程技术股份有限公司 | Rotary trimming shears of which lateral clearances and overlapping quantities of cutterheads can be subjected to closed-loop regulation and control |
| CN103676780B (en) * | 2013-11-16 | 2016-04-13 | 中国重型机械研究院股份公司 | A kind of control system of plant equipment commutation backlash compensation and control method |
| CN103722234B (en) * | 2013-12-31 | 2016-09-28 | 中国重型机械研究院股份公司 | The overlap adjusting system of a kind of upper cutter shaft front circle shear and method of adjustment |
| CN106707945B (en) * | 2015-07-17 | 2020-03-06 | 宝山钢铁股份有限公司 | Control method of disc shear head adjusting device |
| CN105415091A (en) * | 2015-12-11 | 2016-03-23 | 中冶连铸技术工程有限责任公司 | High-precision control method for overlap amount of disc scissors |
| CN106270751B (en) * | 2016-08-19 | 2017-12-12 | 南京埃斯顿自动化股份有限公司 | A kind of plate shearing machine wide based on plate cuts process control method |
| CN109014392B (en) * | 2017-06-12 | 2019-12-31 | 宝山钢铁股份有限公司 | Method for compensating superposition amount of circle shear |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1105841A (en) * | 1963-06-21 | 1968-03-13 | Wire Products And Machine Desi | Improvements in or relating to apparatus for cutting wire, rods or strips into precise lengths |
| CN1272414A (en) * | 1999-04-29 | 2000-11-08 | 机械工业部西安重型机械研究所 | Sheet metal and sheet metal strip shearing system with variable speed feeding device |
| CN2706265Y (en) * | 2004-05-25 | 2005-06-29 | 缙云县机械工具有限公司 | Bicolumn horizontal grogrammable controlling band saw |
| CN2757984Y (en) * | 2004-12-27 | 2006-02-15 | 西安重型机械研究所 | Edge trimming circle shear overlay quantity regulating mechanism having expanding sleeve type coupler |
| CN1850408A (en) * | 2006-05-19 | 2006-10-25 | 北方工业大学 | Apparatus and method for adjusting shears gap for circle shearing machine |
| CN101024254A (en) * | 2006-02-22 | 2007-08-29 | 天水锻压机床有限公司 | Fully-automatic plate-cutting apparatus |
-
2007
- 2007-10-29 CN CNB2007100189600A patent/CN100495263C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1105841A (en) * | 1963-06-21 | 1968-03-13 | Wire Products And Machine Desi | Improvements in or relating to apparatus for cutting wire, rods or strips into precise lengths |
| CN1272414A (en) * | 1999-04-29 | 2000-11-08 | 机械工业部西安重型机械研究所 | Sheet metal and sheet metal strip shearing system with variable speed feeding device |
| CN2706265Y (en) * | 2004-05-25 | 2005-06-29 | 缙云县机械工具有限公司 | Bicolumn horizontal grogrammable controlling band saw |
| CN2757984Y (en) * | 2004-12-27 | 2006-02-15 | 西安重型机械研究所 | Edge trimming circle shear overlay quantity regulating mechanism having expanding sleeve type coupler |
| CN101024254A (en) * | 2006-02-22 | 2007-08-29 | 天水锻压机床有限公司 | Fully-automatic plate-cutting apparatus |
| CN1850408A (en) * | 2006-05-19 | 2006-10-25 | 北方工业大学 | Apparatus and method for adjusting shears gap for circle shearing machine |
Non-Patent Citations (5)
| Title |
|---|
| 一种新型开头夹送辊的动力学分析及控制方法. 张勇安，景群平，万保平，卢进莉.重型机械，第4期. 2005 * |
| 伦茨EVS9300-EP在停剪尺控制中的应用. 党幼云，王小泉，冯连强，许展望.重型机械，第3期. 2001 * |
| 圆盘飞剪主要参数的设计及其计算方法初探. 黄晓明.鞍钢技术. 1999 * |
| 提高圆盘剪剪切作业率途径的探讨. 陈新旺，孙斌，冯翔宇.河南冶金，第11卷第2期. 2003 * |
| 计算机在铝板带纵横联合剪切机组中的应用. 任雅丽.有色设备. 1999 * |
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| CN101145038A (en) | 2008-03-19 |
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Application publication date: 20080319 Assignee: CHANGZHOU JIN'AN METALLURGICAL EQUIPMENT Co.,Ltd. Assignor: China National Heavy Machinery Research Institute Co.,Ltd. Contract record no.: 2013320000469 Denomination of invention: Disc shear cutter head overlap amount regulation control method Granted publication date: 20090603 License type: Exclusive License Record date: 20130529 |
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Assignee: CHANGZHOU JIN'AN METALLURGICAL EQUIPMENT Co.,Ltd. Assignor: China National Heavy Machinery Research Institute Co.,Ltd. Contract record no.: 2013320000469 Date of cancellation: 20140704 |
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Owner name: CHINA NATIONAL HEAVY MACHINERY RESEARCH INSTITUTE Free format text: FORMER NAME: CHINA HEAVY MACHINERY INSTITUTE |
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Address after: 710032 Shaanxi city in Xi'an province Xin Jiamiao Xi'an Heavy Machinery Research Institute. Patentee after: CHINA NATIONAL HEAVY MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: 710032 Shaanxi city in Xi'an province Xin Jiamiao Xi'an Heavy Machinery Research Institute. Patentee before: China National Heavy Machinery Research Institute Co.,Ltd. Address after: 710032 Shaanxi city in Xi'an province Xin Jiamiao Xi'an Heavy Machinery Research Institute. Patentee after: China National Heavy Machinery Research Institute Co.,Ltd. Address before: 710032 Shaanxi city in Xi'an province Xin Jiamiao Xi'an Heavy Machinery Research Institute. Patentee before: China National Heavy Machinery Research Institute Co.,Ltd. |
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Granted publication date: 20090603 Termination date: 20181029 |