CN102049435B - Roll bending method and electrical control device for three-roll plate bending machine - Google Patents
Roll bending method and electrical control device for three-roll plate bending machine Download PDFInfo
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- CN102049435B CN102049435B CN2010105326682A CN201010532668A CN102049435B CN 102049435 B CN102049435 B CN 102049435B CN 2010105326682 A CN2010105326682 A CN 2010105326682A CN 201010532668 A CN201010532668 A CN 201010532668A CN 102049435 B CN102049435 B CN 102049435B
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Abstract
The invention relates to a roll bending method and an electrical control device for a three-roll plate bending machine. The roll bending method sequentially comprises the positioning to a plank: a peripheral point IID of the plank is enabled to be in contact with a positioning plate (3), and an upper roll (1) is enabled to be in contact with the plank; the determination to a center point A of an arc part of the plank: a lower roll (2) is enabled to rotate with the movement amount a=m-w+L\2, and the contact point between the upper roll (1) and the plank is the center point A of the arc part of the plank at this time; the determination to the downward movement amount H of the upper roll (1): according to the principle (r+D2\2) 2 = (L\2) 2 +(H+r+[(D1\2+D2)2-(L\2) 2]1/2-(D1\2)2, the downward movement amount H of the upper roll (1) is determined; and the shaping of the arc of the plank: the lower roll (2) is enabled to continuously rotate and the plank is enabled to move right with the movement amount L\2; and then the lower roll (2) is enabled to reversely move and the plank is enabled to move left with the movement amount L. The electrical control device adopts the following technical scheme: a sensor (14) is connected with the input end of a PLC (Programmable Logic Controller) (11), an input keyboard (16) is connected with the input end of the PLC (11), and a display (15) is connected with the output end of the PLC (11), so that the automatic roll bending to the plank is realized.
Description
One, technical field
The present invention relates to a kind of volume bending method and electric control gear that is used for three rolls plate bending machine, especially a kind of the volume bending method and the electric control gear that are used for three rolls plate bending machine of automation formula.
Two, background technology
In metalwork manufacturing process, often need be curved roll of steel plate, so three rolls plate bending machine is an important machining moulding equipment; In existing three rolls plate bending machine; When roll of steel plate is bent, all be to use manual control, because each operator's working experience and operative skill have gap; Therefore the quality that steel plate is rolled to forming also has height, is unfavorable for the standardization of shaped steel plate.
Three, summary of the invention
In order to overcome above-mentioned technical disadvantages, the purpose of this invention is to provide a kind of volume bending method and electric control gear that is used for three rolls plate bending machine, realized the curved automation of sheet material volume.
For achieving the above object, the technical scheme that is used for the volume bending method of three rolls plate bending machine is:
The steps include:
1, the location of sheet material:
Be placed on sheet material between top roll and the lower roll, the marginal point II D of sheet material is contacted with location-plate, top roll is descended, top roll is contacted with sheet material.
2, confirming of the intermediate point A of sheet material circular arc portion:
Lower roll is rotated, sheet material is moved right, amount of movement 2, this moment, the contact point of top roll and sheet material was exactly the intermediate point A of sheet material circular arc portion.
3, confirming of the amount of the moving down H of top roll 1:
According to (2)
2=(2)
2+ (H+r+ [(2+D2)
2-(2)
2]
2-(2)
2, confirm the amount of the moving down H of top roll to make top roll move down H.
4, the shaping of sheet material circular arc:
Lower roll is rotated further, sheet material is moved right again, amount of movement be 2, make top roll arrive the starting point B of sheet material circular arc portion, after make the lower roll backward rotation, sheet material is moved to the left, amount of movement is L, makes top roll arrive the terminating point C of sheet material circular arc portion.
In the present technique scheme, sheet material circular arc portion length is set to L, and the circular arc portion central angle is set to α; The radius of corner of crooked material is set to r, and the distance at neutral line to the edge, back that bends is set to b, and the thickness of sheet material is set to t; The starting point of sheet material circular arc portion is set to B, and the terminating point of sheet material circular arc portion is set to C, and the intermediate point of sheet material circular arc portion is set to A; The marginal point I of sheet material is set to E, and the marginal point II of sheet material is set to F, and the distance between the marginal point I E of sheet material and the starting point B of sheet material circular arc portion is set to e; Distance between the marginal point II F of sheet material and the terminating point C of sheet material circular arc portion is set to m, and the distance between the central point of two lower rolls 2 and the location-plate 3 is set to w, and the diameter of top roll 1 is set to D1; The diameter of lower roll 2 is set to D2, and the centre-to-centre spacing of two lower rolls 2 is set to g.The unit of length all is set to mm, and the unit of angle is set to °.
The present invention has designed; When rolling up once more when curved; L is set to equal to roll up the sheet material circular arc portion length that stoops time and is set to L2; The sheet material circular arc portion length that volume stoops time is set to the distance that sheet material circular arc portion length that L2 is set to equal to roll up curved last time is set to L1 and neutral line to the edge, back that bends and is set to the b sum, and the distance at neutral line to the edge, back that bends is set to thickness that b is set to equal coefficient n and sheet material and is set to t and multiplies each other, and wherein coefficient n selects according to following table:
The present invention has designed, and is used for the volume cylinder method of three rolls plate bending machine, and the starting point B of sheet material circular arc portion is set to overlap with the marginal point I E of sheet material, the terminating point C of sheet material circular arc portion is set to overlap with the marginal point II F of sheet material.
According to above-mentioned volume bending method; Designed the PLC controller; Internal processes through the PLC controller; Control realizes said method through the electric control gear of three rolls plate bending machine; Its technical scheme is: the technical scheme that is used for the electric control gear of three rolls plate bending machine is: include PLC controller, auxiliary reclay, the peripheral electrical equipment of control, sensor, display and input keyboard; Sensor is set to be connected with the input of PLC controller, and input keyboard is set to be connected with the input of PLC controller, controls peripheral electrical equipment and is set to be connected through the output of auxiliary reclay with the PLC controller; Display is set to be connected with the output of PLC controller, and sensor is set to horizontal differential displacement sensor, the horizontal displacement sensors of the horizontal differential displacement sensor of left cylinder, right cylinder, the pressure sensor and the right cylinder upper cavity pressure sensor of left cylinder epicoele.
In the PLC controller, implant special-purpose control program,,, yield limit wide, depress parameters such as number of times, arc length and be input in the PLC controller thickness of slab, plate through input keyboard; Start three rolls plate bending machine; Be transferred to the PLC controller to data parameters such as the displacement of left cylinder and right cylinder, pressure through sensor, carry out data by special-purpose control program, showing various parameter informations through display at the PLC controller; Be transferred to various parameter informations in the peripheral electrical equipment of control through auxiliary reclay; Make the electrical equipment and the hydraulic means of three rolls plate bending machine carry out work,, control moving down of lower roll rotation and top roll according to above-mentioned volume bending method; Owing to designed the PLC controller, realized the curved automation of sheet material volume.
Four, description of drawings
Fig. 1 is the sketch map of press-bending sheet material:
Fig. 2 is the sketch map of volume bending method:
Fig. 3 is the sketch map of coil plate tube:
Fig. 4 is the sketch map of electric control gear:
Fig. 5 is the connection layout between PLC controller 11 and the peripheral electrical equipment 13 of control.
Five, the specific embodiment
In an embodiment of the present invention, sheet material circular arc portion length is set to L, and the circular arc portion central angle is set to α; The radius of corner of crooked material is set to r, and the distance at neutral line to the edge, back that bends is set to b, and the thickness of sheet material is set to t; The starting point of sheet material circular arc portion is set to B, and the terminating point of sheet material circular arc portion is set to C, and the intermediate point of sheet material circular arc portion is set to A; The marginal point I of sheet material is set to E, and the marginal point II of sheet material is set to F, and the distance between the marginal point I E of sheet material and the starting point B of sheet material circular arc portion is set to e; Distance between the marginal point II F of sheet material and the terminating point C of sheet material circular arc portion is set to m, and the distance between the central point of two lower rolls 2 and the location-plate 3 is set to w, and the diameter of top roll 1 is set to D1; The diameter of lower roll 2 is set to D2, and the centre-to-centre spacing of two lower rolls 2 is set to g.
In an embodiment of the present invention, the unit of length all is set to mm, and the unit of angle is set to °.
To general steel plate, L is set to 1363.5, and r is set to 3221.0, and t is set to 22.0, and e is set to 2766.4, and c is set to 1539.6, and according to lathe model 40 * 1000, w is set to 600.
Be used for first embodiment of the volume bending method of three rolls plate bending machine, the steps include:
1, the location of sheet material:
Be placed on sheet material between top roll 1 and the lower roll 2, the marginal point II D of sheet material is contacted with location-plate 3, top roll 1 is descended, top roll 1 is contacted with sheet material.
2, confirming of the intermediate point A of sheet material circular arc portion:
Lower roll 2 is rotated, sheet material is moved right, amount of movement 2=1621.35, this moment, top roll 1 was exactly the intermediate point A of sheet material circular arc portion with the contact point of sheet material.
3, confirming of the amount of the moving down H of top roll 1:
According to (2)
2=(2)
2+ (H+r+ [(2+D2)
2-(2)
2]
2-(2)
2, confirm the amount of the moving down H of top roll 1 to make top roll 1 move down H.
4, the shaping of sheet material circular arc:
Lower roll 2 is rotated further, sheet material is moved right again, amount of movement be 2=681.75; Make top roll 1 arrive the starting point B of sheet material circular arc portion, after make lower roll 2 backward rotation, sheet material is moved to the left; Amount of movement is L=1363.5, makes top roll 1 arrive the terminating point C of sheet material circular arc portion.
Second embodiment that is used for the volume bending method of three rolls plate bending machine in second step of embodiment one, rolls up when bending for the second time again; Sheet material circular arc portion length L has just changed; L2 is set to equal L1+b, and b is set to equal n * t, and wherein n selects according to following table.
The sheet material circular arc portion length that volume is bent last time is set to L1, and volume stoops inferior sheet material circular arc portion length and is set to L2.
The 3rd embodiment that is used for the volume bending method of three rolls plate bending machine; When the starting point B of sheet material circular arc portion is set to overlap with the marginal point I E of sheet material, when the terminating point C of sheet material circular arc portion is set to overlap with the marginal point II F of sheet material, sheet material just can roll into cylinder.
The embodiment that is used for the electric control gear of three rolls plate bending machine; Include the peripheral electrical equipment of PLC controller 11, auxiliary reclay 12, control 13, sensor 14, display 15 and input keyboard 16; Sensor 14 is set to be connected with the input of PLC controller 11; Input keyboard 16 is set to be connected with the input of PLC controller 11; Controlling peripheral electrical equipment 13 is set to be connected through the output of auxiliary reclay 12 with PLC controller 11; Display 15 is set to be connected with the output of PLC controller 11, and sensor 14 is set to horizontal differential displacement sensor, the horizontal displacement sensors of the horizontal differential displacement sensor of left cylinder, right cylinder, the pressure sensor and the right cylinder upper cavity pressure sensor of left cylinder epicoele.
In the present embodiment, control the former control electric part that peripheral electrical equipment 13 is set to three rolls plate bending machine.
In the present embodiment, PLC controller 11 is set to formula able to programme, and its model is S7-200.
In the present embodiment, the model of auxiliary reclay 12 is y2NJ.
In the present embodiment; In the 1L side; The interface 00 of PLC controller 11 is set to be connected through the interface KA1 of auxiliary reclay 12 with the peripheral electrical equipment 13 of control; The interface 0.0 of PLC controller 11 is set to be connected through the interface KA1 of auxiliary reclay 12 with the peripheral electrical equipment 13 of control; The interface 0.1 of PLC controller 11 is set to be connected through the interface KA2 of auxiliary reclay 12 with the peripheral electrical equipment 13 of control; The interface 0.2 of PLC controller 11 is set to be connected through the interface KA3 of auxiliary reclay 12 with the peripheral electrical equipment 13 of control; The interface 0.3 of PLC controller 11 is set to be connected through the interface KA4 of auxiliary reclay 12 with the peripheral electrical equipment 13 of control; The interface 0.4 of PLC controller 11 is set to be connected through the interface KA5 of auxiliary reclay 12 with the peripheral electrical equipment 13 of control; The interface 0.5 of PLC controller 11 is set to be connected through the interface KA6 of auxiliary reclay 12 with the peripheral electrical equipment 13 of control, and the interface 0.6 of PLC controller 11 is set to be connected through the interface KA7 of auxiliary reclay 12 with the peripheral electrical equipment 13 of control, and the interface 0.7 of PLC controller 11 is set to be connected through the interface KA8 of auxiliary reclay 12 with the peripheral electrical equipment 13 of control; The interface 1.0 of PLC controller 11 is set to be connected through the interface KA9 of auxiliary reclay 12 with the peripheral electrical equipment 13 of control, and the interface 1.1 of PLC controller 11 is set to be connected through the interface KA9 of auxiliary reclay 12 with the peripheral electrical equipment 13 of control.
In the present embodiment; In the 1M side; The interface 0.2 of PLC controller 11 is set to be connected through the interface SQ8 of auxiliary reclay 12 with the peripheral electrical equipment 13 of control; The interface 0.3 of PLC controller 11 is set to be connected through the interface P1-P3 of auxiliary reclay 12 with the peripheral electrical equipment 13 of control; The interface 0.4 of PLC controller 11 is set to be connected through the interface SA3 of auxiliary reclay 12 with the peripheral electrical equipment 13 of control; The interface 0.5 of PLC controller 11 is set to be connected through the interface SB1 of auxiliary reclay 12 with the peripheral electrical equipment 13 of control; The interface 0.6 of PLC controller 11 be set to through auxiliary reclay 12 with control peripheral electrical equipment 13 interface FR3 be connected; The interface 1.1 of PLC controller 11 is set to be connected through the interface SA4 of auxiliary reclay 12 with the peripheral electrical equipment 13 of control, and the interface 1.2 of PLC controller 11 is set to be connected through the interface SB5 of auxiliary reclay 12 with the peripheral electrical equipment 13 of control, and the interface 1.3 of PLC controller 11 is set to be connected through the interface SB6 of auxiliary reclay 12 with the peripheral electrical equipment 13 of control; The interface 1.4 of PLC controller 11 be set to through auxiliary reclay 12 and the peripheral electrical equipment 13 of control interface FR1 is connected, the interface 1.5 of PLC controller 11 is set to be connected with the interface SB8 that controls peripheral electrical equipment 13 through auxiliary reclay 12.
In the present embodiment; The horizontal differential displacement sensor of left side cylinder is set to be connected with interface A+ with the interface RA of PLC controller 11; The horizontal differential displacement sensor of right cylinder is set to be connected with interface B+ with the interface RB of PLC controller 11; Horizontal displacement sensors is set to be connected with interface C+ with the interface RC of PLC controller 11; The pressure sensor of left side cylinder epicoele is set to be connected with interface A+ with the interface RA of another PLC controller 11, and right cylinder upper cavity pressure sensor is set to be connected with interface B+ with the interface RB of another PLC controller 11.
In PLC controller 11, implant special-purpose control program; Through input keyboard 16;, yield limit wide, depress parameters such as number of times, arc length and be input in the PLC controller 11, start three rolls plate bending machine, be transferred to PLC controller 11 to data parameters such as the displacement of left cylinder and right cylinder, pressure through sensor 14 thickness of slab, plate; Carry out data at PLC controller 11 by special-purpose control program; Showing various parameter informations through display 15, be transferred to various parameter informations in the peripheral electrical equipment 13 of control through auxiliary reclay 12, making the electrical equipment of three rolls plate bending machine and hydraulic means carry out work; According to above-mentioned volume bending method, control moving down of lower roll 2 rotations and top roll 1.
The present invention has following characteristics:
1, owing to designed PLC controller 11, realized the curved automation of sheet material volume, simple to operate.
2, owing to kept the peripheral electrical equipment 13 of control, the performance of original three rolls plate bending machine is not destroyed, guaranteed the performance of existing equipment.
3, standard the curved operating procedure of sheet material volume, make that the volume of sheet material is curved has realized standardization, improved the dimensional accuracy of sheet material, guaranteed the quality of sheet material.
In a word, advanced design of the present invention, flexible operation, safe and reliable to operation, fault freedom is good, even under the situation of divorced from computer, still can turn round reliably.
W11SCNC-40 * 1000 horizontal down-regulation type 3-roller lapping machines that my company produces; The core of micro control system is that industrial control computer, SIEMENS produce S7-200 Programmable Logic Controller (PLC) and peripheral circuit thereof, sensor compositions such as (comprising the encoder of measuring the steel plate displacement).The S7-200 Programmable Logic Controller is furnished with specialized simulation amount input module; Respectively with left cylinder, right cylinder, horizontal differential displacement sensor; Left side cylinder epicoele, right cylinder upper cavity pressure sensor signal output connect; Obtain its displacement and pressure condition, the special-purpose control program of computer then through special-purpose communication cable of PC/PPI and S7-200PLC communication, obtains data and PLC input/output states such as displacement, pressure.The comprehensive above information of computer and PLC; Through Intelligent treatment, control PLC output is through auxiliary reclay; Control the running of peripheral electrical equipment, hydraulic test, simultaneously various data, information such as pressure, displacement, warning are presented on the computer screen with the picture and text combination.The native system advanced design, flexible operation, safe and reliable to operation, fault freedom is good, even under the situation of divorced from computer, still can turn round reliably.
In volume bending method that is used for three rolls plate bending machine and electric control gear technical field; Every location that includes sheet material:
Be placed on sheet material between top roll 1 and the lower roll 2, the marginal point II D of sheet material is contacted with location-plate 3, top roll 1 is descended, top roll 1 is contacted with sheet material;
The intermediate point A of sheet material circular arc portion confirms:
Lower roll 2 is rotated, sheet material is moved right, amount of movement 2, this moment, top roll 1 was exactly the intermediate point A of sheet material circular arc portion with the contact point of sheet material;
The amount of the moving down H of top roll 1 confirms:
According to (2)
2=(2)
2+ (H+r+ [(2+D2)
2-(2)
2]
2-(2)
2, confirm the amount of the moving down H of top roll 1 to make top roll 1 move down H;
The shaping of sheet material circular arc:
Lower roll 2 is rotated further; Sheet material is moved right again, amount of movement be 2, make top roll 1 arrive the starting point B of sheet material circular arc portion; After make lower roll 2 backward rotation; Sheet material is moved to the left, and amount of movement is L, makes the technology contents of terminating point C that top roll 1 arrives the sheet material circular arc portion all in protection scope of the present invention.
Claims (4)
1. volume bending method that is used for three rolls plate bending machine; It is characterized in that:
The location of sheet material:
Be placed on sheet material between top roll (1) and the lower roll (2), the marginal point IIF of sheet material is contacted with location-plate (3), top roll (1) is descended, top roll (1) is contacted with sheet material;
Sheet material circular arc portion length is set to L, and the circular arc portion central angle is set to α, and the radius of corner of crooked material is set to r; The distance at neutral line to edge is set to b after bending, and the thickness of sheet material is set to t, and the starting point of sheet material circular arc portion is set to B; The terminating point of sheet material circular arc portion is set to C, and the intermediate point of sheet material circular arc portion is set to A, and the marginal point I of sheet material is set to E; The marginal point II of sheet material is set to F, and the distance between the marginal point I E of sheet material and the starting point B of sheet material circular arc portion is set to e, and the distance between the marginal point II F of sheet material and the terminating point C of sheet material circular arc portion is set to m; Distance between the central point of two lower rolls (2) and the location-plate (3) is set to w; The diameter of top roll (1) is set to D1, and the diameter of lower roll (2) is set to D2, and the centre-to-centre spacing of two lower rolls (2) is set to g; The unit of length all is set to mm, and the unit of angle is set to °;
The intermediate point A of sheet material circular arc portion confirms:
Lower roll (2) is rotated, sheet material is moved right, amount of movement 2, top roll this moment (1) is exactly the intermediate point A of sheet material circular arc portion with the contact point of sheet material;
The amount of the moving down H of top roll (1) confirms:
According to (2)
2=(2)
2+ (H+r+ [(2+D2)
2-(2)
2]
2-(2)
2), confirm the amount of the moving down H of top roll (1) to make top roll (1) move down H;
The shaping of sheet material circular arc:
Lower roll (2) is rotated further, sheet material is moved right again, amount of movement be 2; Make top roll (1) arrive the starting point B of sheet material circular arc portion, after make lower roll (2) backward rotation, sheet material is moved to the left; Amount of movement is L, makes top roll (1) arrive the terminating point C of sheet material circular arc portion.
2. the volume bending method that is used for three rolls plate bending machine according to claim 1; It is characterized in that: when rolling up once more when curved; L is set to equal to roll up the sheet material circular arc portion length L 2 that stoops time; Volume stoops the sheet material circular arc portion length L 1 and the distance b sum of bending neutral line to edge, back that inferior sheet material circular arc portion length L 2 is set to equal to roll up curved last time; The thickness t that the distance b at neutral line to edge, back of bending is set to equal coefficient n and sheet material multiplies each other, and wherein coefficient n selects according to following table:
3. the volume bending method that is used for three rolls plate bending machine according to claim 1; It is characterized in that: be used for the volume cylinder method of three rolls plate bending machine, the starting point B of sheet material circular arc portion is set to overlap with the marginal point IE of sheet material, the terminating point C of sheet material circular arc portion is set to overlap with the marginal point IIF of sheet material.
4. according to claim 1, the 2 or 3 described volume bending methods that are used for three rolls plate bending machine; It is characterized in that: the electric control gear that is used for three rolls plate bending machine includes PLC controller (11), auxiliary reclay (12), controls peripheral electrical equipment (13), sensor (14), display (15) and input keyboard (16); Sensor (14) is set to be connected with the input of PLC controller (11); Input keyboard (16) is set to be connected with the input of PLC controller (11); Controlling peripheral electrical equipment (1 3) is set to be connected through the output of auxiliary reclay (12) with PLC controller (11); Display (15) is set to be connected with the output of PLC controller (11), and sensor (14) is set to horizontal differential displacement sensor, the horizontal displacement sensors of the horizontal differential displacement sensor of left cylinder, right cylinder, the pressure sensor or the right cylinder upper cavity pressure sensor of left cylinder epicoele.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105326682A CN102049435B (en) | 2010-10-30 | 2010-10-30 | Roll bending method and electrical control device for three-roll plate bending machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105326682A CN102049435B (en) | 2010-10-30 | 2010-10-30 | Roll bending method and electrical control device for three-roll plate bending machine |
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| CN102049435A CN102049435A (en) | 2011-05-11 |
| CN102049435B true CN102049435B (en) | 2012-11-07 |
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| CN103389681B (en) * | 2012-05-09 | 2016-02-10 | 施业平 | A kind of modeling method of full-automatic plate bending machine digital control system |
| CN102825117B (en) * | 2012-09-10 | 2014-08-20 | 中冶南方武汉钢铁设计研究院有限公司 | Pipe bender precision control method |
| CN103861904B (en) * | 2012-12-14 | 2016-12-21 | 泰安华鲁锻压机床有限公司 | A kind of full-automatic four-roll plate bending machine roll bending technique |
| CN103034164A (en) * | 2012-12-21 | 2013-04-10 | 南通金晟元机械制造有限公司 | Technical control system of veneer reeling machine with curved plate and four rollers |
| CN105373076B (en) * | 2015-12-16 | 2018-07-03 | 广州纬纶信息科技有限公司 | A kind of method controlled with monitoring horizontal sheet fabrication |
| CN114619203B (en) * | 2021-12-24 | 2022-09-20 | 钢一控股集团有限公司 | Forming method of large-diameter stainless steel pipe |
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| JPH035020A (en) * | 1989-06-01 | 1991-01-10 | Kurimoto Ltd | Method for u-bending steel sheet by bending rolls |
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| US4761979A (en) * | 1984-05-30 | 1988-08-09 | Mitsubishi Denki Kabushiki Kaisha | Roller bending apparatus equipped with a curvature measuring unit |
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| CN102049435A (en) | 2011-05-11 |
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