CN1091668C - Sheet metal and sheet metal strip shearing system with variable speed feeding device - Google Patents
Sheet metal and sheet metal strip shearing system with variable speed feeding device Download PDFInfo
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- CN1091668C CN1091668C CN99115760A CN99115760A CN1091668C CN 1091668 C CN1091668 C CN 1091668C CN 99115760 A CN99115760 A CN 99115760A CN 99115760 A CN99115760 A CN 99115760A CN 1091668 C CN1091668 C CN 1091668C
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- 238000010008 shearing Methods 0.000 title claims abstract description 70
- 239000002184 metal Substances 0.000 title claims abstract description 16
- 230000001105 regulatory effect Effects 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 238000006073 displacement reaction Methods 0.000 claims abstract description 14
- 230000001276 controlling effect Effects 0.000 claims description 7
- 230000009467 reduction Effects 0.000 claims description 6
- 230000008520 organization Effects 0.000 claims description 5
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract 3
- 238000002789 length control Methods 0.000 abstract 2
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 235000013350 formula milk Nutrition 0.000 description 9
- 230000008859 change Effects 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
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Abstract
The present invention relates to a metal plate and strip flying shear system with variable speed material feeding, which comprises a pair of rotary flying shears, a main driving mechanism, a motor D1 which is used for dragging the flying shears, a driver of the motor D1, a material feeding roller, a differential mechanism, a motor D2 which is used for regulating the material feeding roller, the driver of the motor D2, and an electric control system, wherein the electric control system comprises a calculating unit which is used for calculating the specified lengths and determining the regulating mode, and an actuating unit for the closed loop regulation of the angle displacement of the motor D2. The present invention causes the synchronous shearing control and the specified length control to be separated through the differential mechanism, eliminates the factor of great fluctuation of the dynamic load of the flying shears, simplifies an electric control mode, and improves the shearing speed and the specified length control precision.
Description
Technical field:
The present invention is a kind of sheet metal and sheet metal strip shearing system of variable speed feeding device, and it is used to finish the cutting to length of metal plate and belt.
Background technology:
At present, the domestic rotary flying shear system that a kind of public use is arranged, referring to Fig. 3, it is made up of the driver 10 of the driver 9 of rotary flying shear machine 1, feeding roller 2, measuring roller 3, the motor D 1 that drags flying shearing machine and motor D 1, the motor D 2 that drags feeding roller and motor D 2 and the electric control system 20 of controlling whole shearing system operation.This shearing system is when work, drag feeding roller by motor D 2 and rotate, feeding roller pinches band 19 uniform motion forward, and the band of motion drives measuring roller 3 by means of frictional force and rotates, simultaneously, the rate signal that provides according to electric control system of motor D 1 drags flying shearing machine 1 operation.Described flying shearing machine speed change curves starts (in the t1 time) according to these curve flying shearing machine according to acceleration as shown in Figure 4, and------retarding braking (the t3 time is interior)---stops to wait for the rule circular flow of (in the t4 time) to shear (in the t2 time) at the uniform velocity synchronously.Rule according to above-mentioned flying shearing machine velocity variations, the cutting edge of flying shearing machine will be according to rule operation shown in Figure 5, when promptly quickening to start, two cutting edges quicken to rotate to the B point from AA ' point, when shearing synchronously, cutting edge runs to the C point from the B point, during retarding braking, cutting edge is got back to AA ' point from the C point, waits for the arrival of next time shearing at AA ' point, so cutting to length is finished in circulation.The major defect of this shearing system is: flying shearing machine open, braking work, make its dynamic loading fluctuation serious, thereby have limited shear rate (its shear rate generally is lower than 120 meters/minute); Moreover, cut lengths control and shearing synchronously are controlled at together, that is to say, electric control system will be controlled cutting edge according to cut lengths earlier and stop stand-by period t4 when work, after quickening to start, control relative position and speed between cutting edge and the strip again, the length of the strip of sending just in time equals cut lengths when making cutting edge arrive clipped position, simultaneously, the linear velocity in the time of cutting edge being sheared is consistent with the linear velocity of feeding roller.Like this, just make the electrical control operational model comparatively complicated, the scale control accuracy is lower.
Summary of the invention:
The objective of the invention is to fluctuate seriously, be unfavorable for THE ADIABATIC SHEAR IN and control the problem that operational model is comparatively complicated, be unfavorable for improving the scale control accuracy at flying shearing machine dynamic loading in the prior art, a kind of sheet metal and sheet metal strip shearing system of variable speed feeding device is provided, thereby in system's control, eliminate the big factor of flying shearing machine dynamic loading fluctuation, simplify system electrical control model simultaneously, finally reach the purpose that improves shear rate and scale control accuracy.
For achieving the above object, solution of the present invention is as follows: it comprises rotary flying shear machine, feeding roller, drags motor D 1 and the driver of motor D 1, the adjusting motor D 2 of feeding roller and the driver and the electric control system of motor D 2 of flying shearing machine, its key structure is: described flying shearing machine have definite gyration track and cut-in without ball controlling organization, and described motor D 1 links to each other with flying shearing machine by main drive gear; Be provided with a box of tricks between motor D 2 and feeding roller, described motor D 2 links to each other with two motion inputs of box of tricks as two motion input links with main drive gear, and the synthetic output of the motion of described box of tricks links to each other with feeding roller; The throw of crankshaft R of described flying shearing machine and the radius r of feeding roller and motor D 1 speed ratio i to the speed ratio i1 of flying shearing machine and motor D 1 to feeding roller
2Satisfy following formula:
Described electric control system comprises a calculating that is used to finish cut lengths at least and provides feeding according to result of calculation regulates adjusting pattern control motor D 2 forward or reverse that the arithmetic element of pattern and one provides according to this arithmetic element or the angular displacement closed-loop adjustment performance element of stall, and the cut lengths computing formula of described arithmetic element is:
L＝N·S+ΔL
In the formula: L is the cut lengths that sets,
S is the girth of flying shearing machine gyration track,
N be the cut-in without ball number of times (the integer multiple N=0 of S, 1,2,3...),
Δ L is the surplus length of multiple length (remainder of S integral multiple); Described feeding adjusting pattern is unidirectional adjusting pattern, that is:
When Δ L=0, its feeding adjusting pattern is L=NS, is used to realize the cutting to length of different multiple lengths;
When Δ L ≠ 0, its feeding adjusting pattern is that speedup is regulated pattern L=NS+ Δ L or deceleration adjusting pattern L=(N+1) S-(S-Δ L), is used to realize the shearing of different scales.
By above-mentioned solution as can be seen, one of characteristics of the present invention are: control separately shearing control and scale synchronously with mechanical means, specifically in system, used box of tricks, this box of tricks can guarantee when motor D 2 rotating speeds are zero that the linear velocity of feeding roller equates with the cutting edge linear velocity of flying shearing machine, thereby realizes shearing synchronously; Simultaneously, utilize the characteristic of this box of tricks, control a motion input link of this box of tricks---motor D 2 shear synchronously arrive before corresponding angular amount of rotation, make feeding roller variable speed feeding device and eliminate the surplus length of multiple length before shearing, thereby realize the shearing of different scales.This control model that native system adopts makes that the scale computing formula is simple, scale control model is greatly simplified, and has not only avoided arithmetic eror, helps improving control accuracy, also reduced the scale regulated quantity, accelerate the adjusting time, adjustment process is controlled easily, helped improving shear rate.Simultaneously, it is an angular displacement close loop control circuit that the scale of native system is regulated, and the correction adjustment error has the high characteristics of degree of regulation at any time, and this is very favorable to improving sizing accuracy.Another characteristics of the present invention are: because native system has adopted above-mentioned control mode, flying shearing machine can be at the uniform velocity running at work all the time, thereby eliminated the big factor of flying shearing machine dynamic loading fluctuation, improved the shear rate (can reach more than 200 meters/minute) of flying shearing machine.Therefore, compared with the prior art the present invention has scale control accuracy height, the advantage that shear rate is fast.
Description of drawings:
Describe structure of the present invention and operation principle in detail according to embodiment below.
Fig. 1, system architecture schematic diagram of the present invention.
Fig. 2, box of tricks structure principle chart.
Fig. 3, existing shearing system structure principle chart.
The speed change curves figure of Fig. 4, existing flying shearing machine.
Cutting edge change in location schematic diagram when Fig. 5, existing flying shearing machine work.
The specific embodiment:
Referring to Fig. 1, native system comprises flying shearing machine 1, feeding roller 2, measuring roller 3, drags motor D 1 and the driver 9 of motor D 1, the adjusting motor D 2 of feeding roller and driver 10, main drive gear 5, box of tricks 6 and the electric control system of motor D 2 of flying shearing machine operation.Described flying shearing machine 1 have definite gyration track and cut-in without ball controlling organization 4, and its gyration track can be circle or non-circle.
Referring to Fig. 2, described main drive gear 5 adopts common gear reduction unit, and described box of tricks 6 adopts typical planetary differential gear mechanism.The input 5-1 of gear reduction unit links to each other with motor D 1, its output 5-2 links to each other with flying shearing machine 1, moreover, the output gear 5-3 of gear reduction unit is as a motion input link of planetary differential gear mechanism, it is by the engagement of the external toothing 6-1 in idler gear 5-4 and the planetary differential gear mechanism, described motor D 2 is as another motion input link of planetary differential gear mechanism, it links to each other with the input 6-2 of planetary differential gear mechanism, and the synthetic output 6-3 of the motion of planetary differential gear mechanism links to each other with feeding roller; Sequence number 6-4 is a central gear among the figure, and 6-5 is a planetary gear.The throw of crankshaft R of described flying shearing machine and feeding roller radius r and the motor D 1 speed ratio i2 to the speed ratio i1 of flying shearing machine 1 and motor D 1 to feeding roller 2 should satisfy following formula:
Like this, when motor D 2 rotating speeds were zero, the linear velocity of feeding roller equated with the linear velocity of flying shearing machine cutting edge.
Referring to Fig. 1, described electric control system is made of an arithmetic element 14 and an angular displacement closed-loop adjustment performance element 15 at least again.Described arithmetic element 14 can be realized by computer, it mainly finishes following function: first, according to the cut lengths L that sets, L calculates according to formula L=NS+ Δ, draw cut-in without ball times N (N=0,1,2,3...) and the surplus long Δ L of multiple length (size of 0≤Δ L＜S), the S in the formula is the girth of flying shearing machine gyration track; The second, surplus long Δ L determines the adjusting pattern according to multiple length.This adjusting pattern can adopt unidirectional adjusting or bidirectional modulation pattern according to the difference of the maximal regulated amount of variable speed feeding device that system limits.
If the maximal regulated amount of system specialization angular displacement closed-loop adjustment performance element (being the maximal regulated amount of variable speed feeding device) is S, can adopt unidirectional adjusting form, its feeding adjusting pattern is:
When Δ L=0, its feeding adjusting pattern is L=NS;
When Δ L ≠ 0, its feeding pattern of regulating can adopt speedup to regulate pattern L=NS+ Δ L or deceleration adjusting pattern L=(N+1) S-(S-Δ L).
That is to say, when the surplus long Δ L=0 of the multiple length that is calculated, electric control system adopts the adjusting pattern of L=NS, according to this adjusting pattern, it is the cut-in without ball controlling organization 4 that flying shearing machine are delivered in the instruction of N that arithmetic element 14 will provide the cut-in without ball number of times, and this cut-in without ball controlling organization will be controlled the each cut-in without ball number of times of shearing of flying shearing machine, simultaneously, the regulated quantity that arithmetic element 14 also will provide motor D 2 is zero instruction, make motor D 2 at work rotating speed be zero, thereby realize the cutting to length of different multiple lengths.When the surplus long Δ L of the multiple length that is calculated ≠ 0, electric control system can adopt the speedup of L=NS+ Δ L to regulate pattern, according to this adjusting pattern, arithmetic element 14 will provide the instruction that the cut-in without ball number of times is N, making the each cut-in without ball number of times of shearing of flying shearing machine is N time, simultaneously, also will provide the signal that regulated quantity is Δ L, this signal is changed to angular displacement by numerical transformation unit 7 with the length quantitative change and delivers to adjusting performance element 15, this adjusting performance element will be rotated in the forward a corresponding angular amount according to the size control motor D 2 of this signal before each the shearing, make the feeding of feeding roller speedup and eliminate the surplus long Δ L of multiple length, thereby realize the shearing of different scales.In like manner, in Δ L ≠ 0 o'clock, electric control system also can adopt the deceleration of L=(N+1) S-(S-Δ L) to regulate pattern, according to this adjusting pattern, arithmetic element 14 provides instruction that the cut-in without ball number of times is N+1 and regulated quantity and is-the signal of (S-Δ L), making the each cut-in without ball number of times of shearing of flying shearing machine is N+1 time, and makes and regulate performance element controlling corresponding angular amount of motor D 2 reverse rotations before each the shearing, makes feeding roller deceleration feeding and eliminates the surplus long S-Δ L of multiple length.Above-mentioned two kinds of unidirectional adjusting patterns are equal on the control effect, therefore can choose any one kind of them.
If the maximal regulated amount of system specialization variable speed feeding device is S/2, then can adopt the bidirectional modulation form, be:
When Δ L=0, its feeding adjusting pattern is L=NS, to realize the cutting to length of different multiple lengths;
When Δ L ≠ 0, judge that earlier Δ L≤S/2 still be Δ L＞S/2, if Δ L≤S/2, then feeding adjusting pattern is that speedup is regulated pattern L=NS+ Δ L, the surplus long Δ L of control feeding roller speedup elimination multiple length; If during Δ L＞S/2, then feeding adjusting pattern is deceleration adjusting pattern L=(N+1) S-(S-Δ L), the control feeding roller slows down and eliminates the surplus long S-Δ L of multiple length, to realize the shearing of different scales.
This bidirectional modulation pattern can be limited to the maximal regulated amount of variable speed feeding device within the S/2, regulated quantity more the minor adjustment time short more, help improving shear rate.
Described angular displacement closed-loop adjustment performance element 15 is close loop control circuits that are made of angular displacement ultramagnifier 11, angular displacement Error Calculator 18, adjuster 13.This close loop control circuit can be eliminated angular displacement error delta L2 between practical adjustments amount and the given regulated quantity, it have be easy to control, advantage that degree of regulation is high.In order further to reduce the scale departure, the correction branch road of feeding error also need be set in actual applications, this correction route feed length ultramagnifier 12, feeding Error Calculator 17, arithmetic unit 8 connect and compose.Its purpose is that the error delta L1 that scale sets value between L and the actual scale detected value L ' is calculated, and comes the angular displacement calculated value of correcting motor D2 by arithmetic unit 8, thereby guarantees that actual sheared length equates with setting value.Above-mentioned close loop control circuit and angular displacement ultramagnifier 11 and the feed length ultramagnifier 12 proofreaied and correct in the branch road can adopt photo-electric or electromagnetic type shaft-position encoder, calculator 8,18,17 and adjuster 13 available computers realize, also can adopt reversible calculator in the digital circuit and the proportional amplifier in the analog circuit.Sequence number 16 is the cut lengths device for posting among the figure.Surplus length amount of multiple length in the described numerical transformation unit 7 and motor D 2 angular displacement transformation for mula are as follows:
M＝ΔL·M
0/S·i3
In the formula: i3 is the speed ratio of motor D 2 to feeding roller 2,
M
0Be the umber of pulse of encoder 11 revolutions,
M is the umber of pulse of Δ L correspondence.
Claims (3)
1, a kind of sheet metal and sheet metal strip shearing machine system of variable speed feeding device, comprise the driver (9) of rotary flying shear machine (1), feeding roller (2), the motor D 1 that drags flying shearing machine and motor D 1, the adjusting motor D 2 of feeding roller and the driver (10) and the electric control system of motor D 2, it is characterized in that:
A, described flying shearing machine (1) have definite gyration track and cut-in without ball controlling organization (4), and described motor D 1 links to each other with flying shearing machine (1) by main drive gear (5);
B, between motor D 2 and feeding roller, be provided with a box of tricks (6), described motor D 2 links to each other with two motion inputs of box of tricks (6) as two motion input links with main drive gear (5), and the synthetic output of the motion of described box of tricks links to each other with feeding roller (2);
The throw of crankshaft R of c, described flying shearing machine and the radius r of feeding roller and motor D 1 speed ratio i to the speed ratio i1 of flying shearing machine and motor D 1 to feeding roller
2Satisfy following formula:
D, described electric control system comprise that at least one is used to finish the calculating of cut lengths and provides arithmetic element (14) and angular displacement closed-loop adjustment performance element (15) that rotates according to given adjusting pattern control motor D 2 that pattern is regulated in feeding according to result of calculation, and the cut lengths computing formula of described arithmetic element (14) is:
L＝N·S+ΔL，
In the formula: L is the cut lengths that sets,
S is the girth of flying shearing machine gyration track,
N be the cut-in without ball number of times (the integer multiple N=0 of S, 1,2,3...),
Δ L is the surplus length of multiple length (remainder of S integral multiple); Described adjusting pattern is unidirectional adjusting pattern, that is:
When Δ L=0, its feeding adjusting pattern is L=NS, is used to realize the cutting to length of different multiple lengths;
When Δ L ≠ 0, its feeding adjusting pattern is that speedup is regulated pattern L=NS+ Δ L or deceleration adjusting pattern L=(N+1) S-(S-Δ L), is used to realize the shearing of different scales.
2, the sheet metal and sheet metal strip shearing machine system of variable speed feeding device as claimed in claim 1 is characterized in that: the feeding of described arithmetic element (14) is regulated pattern and is become the bidirectional modulation pattern by unidirectional adjusting pattern, that is:
When Δ L=0, its feeding adjusting pattern is L=NS, is used to realize the cutting to length of different multiple lengths;
When Δ L ≠ 0, judge that Δ L≤S/2 still be Δ L＞S/2, if Δ L≤S/2, then feeding adjusting pattern is speedup adjusting pattern L=NS+ Δ L; If during Δ L＞S/2, then feeding adjusting pattern is deceleration adjusting pattern L=(N+1) S-(S-Δ L), is used to realize the shearing of different scales.
3, the sheet metal and sheet metal strip shearing machine system of variable speed feeding device as claimed in claim 1, it is characterized in that: described main drive gear (5) is a gear reduction unit, described box of tricks (6) is a planetary differential gear mechanism, the input of described gear reduction unit (5-1) links to each other with motor D 1, its output (5-2) links to each other with flying shearing machine (1), the output gear of described gear reduction unit (5-3) is as a motion input link of planetary differential gear mechanism, it is by the engagement of the external toothing (6-1) in idler gear (5-4) and the planetary differential gear mechanism, described motor D 2 is as another motion input link of planetary differential gear mechanism, it links to each other with the input (6-2) of planetary differential gear mechanism, and the motion of planetary differential gear mechanism is synthesized output (6-3) and linked to each other with feeding roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99115760A CN1091668C (en) | 1999-04-29 | 1999-04-29 | Sheet metal and sheet metal strip shearing system with variable speed feeding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99115760A CN1091668C (en) | 1999-04-29 | 1999-04-29 | Sheet metal and sheet metal strip shearing system with variable speed feeding device |
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| Publication Number | Publication Date |
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| CN1272414A CN1272414A (en) | 2000-11-08 |
| CN1091668C true CN1091668C (en) | 2002-10-02 |
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| CN99115760A Expired - Fee Related CN1091668C (en) | 1999-04-29 | 1999-04-29 | Sheet metal and sheet metal strip shearing system with variable speed feeding device |
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| CN100495263C (en) * | 2007-10-29 | 2009-06-03 | 中国重型机械研究院 | Disc shear cutter head overlap amount regulation control method |
| CN102773256B (en) * | 2011-05-11 | 2015-04-08 | 上海宝信软件股份有限公司 | Optimal control method for strip tail shear by flying shear at continuous annealing unit inlet |
| CN103157851B (en) * | 2011-12-19 | 2016-06-08 | 苏州汇川技术有限公司 | Flying shear control system and method |
| CN102744274B (en) * | 2012-07-03 | 2014-06-11 | 江苏永钢集团有限公司 | Intelligent adjusting system for apron board distance in cooling bed equipment |
| CN104148406A (en) * | 2014-08-15 | 2014-11-19 | 内蒙古包钢钢联股份有限公司 | Double-length flying shear optimal shearing method |
| CN104741683B (en) * | 2015-03-27 | 2017-12-01 | 宁波金田铜业(集团)股份有限公司 | It is a kind of roll-turning horizontal to cut device |
| CN108860700A (en) * | 2018-07-10 | 2018-11-23 | 青岛润福达智能设备有限公司 | A kind of magnetic force warm paste packing machine and its operating method |
| CN113843661A (en) * | 2021-11-29 | 2021-12-28 | 烟台环球数控科技有限公司 | Small-period compensation device for worm gear pair and using method thereof |
| CN114932265B (en) * | 2022-06-15 | 2023-06-23 | 中冶南方工程技术有限公司 | Flying shear control method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1298181A (en) * | 1970-04-25 | 1972-11-29 | Jagenberg Werke Ag | Cross cutter with controlled multiple motor drive for cutting sheets of uniform length |
| US3982454A (en) * | 1974-06-11 | 1976-09-28 | L. Schuler Gmbh | Apparatus for the control and regulation of cutting interval and synchronism at a cutting mechanism for the machining of strip material |
| US4266276A (en) * | 1978-10-04 | 1981-05-05 | Nusco Kabushiki Kaisha | Cutting control apparatus |
| US4283975A (en) * | 1978-09-16 | 1981-08-18 | Jagenberg Werke Ag | System for setting the sheet length on a crosscutter for webs of material |
| US4361063A (en) * | 1979-05-09 | 1982-11-30 | Bethlehem Steel Corporation | Adaptive control for a dividing shear |
-
1999
- 1999-04-29 CN CN99115760A patent/CN1091668C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1298181A (en) * | 1970-04-25 | 1972-11-29 | Jagenberg Werke Ag | Cross cutter with controlled multiple motor drive for cutting sheets of uniform length |
| US3982454A (en) * | 1974-06-11 | 1976-09-28 | L. Schuler Gmbh | Apparatus for the control and regulation of cutting interval and synchronism at a cutting mechanism for the machining of strip material |
| US4283975A (en) * | 1978-09-16 | 1981-08-18 | Jagenberg Werke Ag | System for setting the sheet length on a crosscutter for webs of material |
| US4266276A (en) * | 1978-10-04 | 1981-05-05 | Nusco Kabushiki Kaisha | Cutting control apparatus |
| US4361063A (en) * | 1979-05-09 | 1982-11-30 | Bethlehem Steel Corporation | Adaptive control for a dividing shear |
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| CN1272414A (en) | 2000-11-08 |
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