CN1990133A - Machining apparatus for digital control rib cold bending machining and products produced thereby - Google Patents

Machining apparatus for digital control rib cold bending machining and products produced thereby Download PDF

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Publication number
CN1990133A
CN1990133A CN 200510112495 CN200510112495A CN1990133A CN 1990133 A CN1990133 A CN 1990133A CN 200510112495 CN200510112495 CN 200510112495 CN 200510112495 A CN200510112495 A CN 200510112495A CN 1990133 A CN1990133 A CN 1990133A
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China
Prior art keywords
rib
sagitta
processing
probe
measuring
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CN 200510112495
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CN100478095C (en
Inventor
金永昌
钟明辉
陈强
姚建春
杜敏捷
吴向阳
任丽霞
袁海燕
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SHANGHAI LINGANG SHIPBUILDING EQUIPMENT LTD., CORP, CSSC
Shanghai Shipbuilding Technology Research Institute
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Shanghai Shipbuilding Technology Research Institute
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Abstract

The invention discloses a machining method used for digital control frame cool bender, its characteristics is that it includes the following steps : A, dividing the to be processing frame curve using the constant chord length from the start point of frame machining; B, calculating the chord length Li between start point and each dividing points; C, for the frame curve divided by chord length, calculating the corresponding circular arc camber Hi at the half of the constant chord length; D, for each frame curves, calculating a group of {Li,Hi} data; E, making one group of {Li,Hi} data as the machining controlling quantity when the digital control frame cool Bender operates automatically, the Li is goal feed amount and the Hi is goal camber. The invention also discloses the machining device for realizing the processing method. The advantages of the invention are it gives the piecewise advanceable digital control frame cool bender a simple and reliable measurement method to ensuring the accuracy of frame automatic bending and shaping.

Description

A kind of processing unit (plant) and processing method thereof that is used for digital controlled rib cold bent machine
Technical field:
The present invention relates to the Ship-Building Technology field, particularly a kind of processing unit (plant) and processing method thereof that is used for digital controlled rib cold bent machine.
Background technology:
Existing hull frame forming mill adds man-hour to hull frame, adopts string of a musical instrument mensuration usually, is string of a musical instrument angle theta i when charging length L i is with bending when adopting a steel wire to measure forming mill work simultaneously.Because in the actual frame bending, the most responsive place when rib carries out elasticity, plastic deformation, it is exactly the sagitta place of bending forming circular arc, but exactly string of a musical instrument measurement is not this section of energy measurement distortion, therefore curved phenomenon often took place in the BENDING PROCESS, and in a single day the curved forming quality and the forming accuracy that will influence line style took place, and reduce production efficiency.Along with the continuous development of electromechanical integration technology and measuring technique, need to explore and research and develop new more advanced real-time measurement scheme and measuring mechanism, thereby improve crooked precision and efficient.
Summary of the invention:
An object of the present invention is to provide a kind of processing unit (plant) that is used for digital controlled rib cold bent machine, can improve crooked precision and efficient.
To achieve these goals, technical scheme of the present invention is: a kind of processing unit (plant) that is used for digital controlled rib cold bent machine, it comprises master cylinder, the controller that is connected with master cylinder, it is characterized in that it comprises three processing chucks that are arranged in parallel, both sides two processing chuck is fixed, middle processing chuck is connected with master cylinder, middle processing chuck is connected with test desk, test desk is provided with the sagitta measurement mechanism, also be provided with the chord length measurement mechanism outside test desk, the sagitta measurement mechanism all is connected with controller with the chord length measurement mechanism.Wherein, the sagitta measurement mechanism comprises the link rod axle that is located on the test desk, and the link rod axle is connected with three sagitta measuring mechanisms that are arranged in parallel, and each sagitta measuring mechanism has a measuring probe.Each sagitta measuring mechanism comprises the screw mandrel that is connected with the link rod axle, motor is connected with screw mandrel, screw mandrel is connected with spring block, spring block is connected with spring, spring is connected with the detection probe, survey probe and be connected with raster probe, test desk is provided with the grating that matches with raster probe, and raster probe is connected with controller.The chord length measurement mechanism comprises the Horizontal shifting platform that is slidingly connected with main guide rail, the slide plate dolly that is slidingly connected with Horizontal shifting platform, Horizontal shifting platform is connected with the first length coding device on being located at main guide rail, the slide plate dolly is connected with the second length coding device on being located at Horizontal shifting platform, and the first length coding device all is connected with controller with the second length coding device.
Another object of the present invention provides a kind of processing method that is used for digital controlled rib cold bent machine, can improve crooked precision and efficient.
To achieve these goals, technical scheme of the present invention is: a kind of processing method that is used for digital controlled rib cold bent machine is characterized in that it may further comprise the steps: A, the starting point of processing from rib begin with the length of tuning up rib curve to be processed to be cut apart; B, obtain starting point to the chord length L of each cut-point respectively iC, for by the long rib curve that is divided into of tuning up, the sagitta H of the circular arc of the correspondence of obtaining at half place of tuning up long iD, for every root bone curve, obtain one group of { Li, Hi} data; E, will calculate one group the machining control amount when Li, Hi} control automatically as digital controlled rib cold bent machine, and wherein Li is the target feed amount, Hi is a target sagitta amount.
Wherein step e comprises again: F, with rib to be processed be installed in three processing chucks on, make the measuring probe of three sagitta measuring mechanisms contact with the processing rib, and make one of the processing rib to place on the slide plate dolly, wherein the distance of first and second measuring probes is half of tuning up long, and the distance of the second and the 3rd measuring probe is half of tuning up long; G, when charging, calculate chord length L according to the value that the first length coding device and the second length coding device record, with L and target feed value Li relatively, to control inlet amount; H, when inlet amount is Li, stop charging, the processing chuck carries out bending to rib in the middle of the master cylinder control, the value that records according to three raster probes is calculated sagitta H, is reached desired value H as sagitta H simultaneously iAfter, master cylinder just stops bending.
The invention has the advantages that it is 200t, 250t, 300t, 400t, 600t, the automatic control of 700t three fulcrum cold-frame benders provides method, gives piecemeal the advanceable digital controlled rib cold bent machine with simple, measuring method reliably, guarantee the precision of the automatic bending forming of rib, thereby guaranteeing to seek the high-quality of rib clod wash processing under the high-precision prerequisite with high-speed.
Description of drawings:
Fig. 1 calculates the schematic diagram of rib curvilinear coordinate initial point according to the present invention
Fig. 2 is the schematic diagram of the plastically deforming area among the present invention
Fig. 3 is machining control amount L iAnd H iSchematic diagram
Fig. 4 is the processing unit (plant) structural representation among the present invention
Fig. 5 is the measurement mechanism schematic diagram among the present invention
The specific embodiment:
Below in conjunction with drawings and Examples the present invention is further described.
In accompanying drawing 4, each numerical chracter is represented:
The 1-first length coding device, the 2-main guide rail, 3-holds frame, the 4-second length coding device, the 5-Horizontal shifting platform, 6-slide plate dolly, 7-rib chuck, 8-rib, the 9-first processing chuck, the 10-second processing chuck, 11-the 3rd processing chuck, 12-detection probe, 13-detection and location tongue bar, 14-spring, 15-spring backstay, 16-spring block, the 17-grating, 18-nut, 19-screw mandrel, 20-motor, the 21-test desk, 22-raster probe, 23-link rod axle.
Because in the actual frame bending, the most responsive place when rib carries out elasticity, plastic deformation is exactly the sagitta place of bending forming circular arc,, need to adopt the sagitta mensuration to process therefore in order to guarantee the precision of the automatic bending forming of rib.
A kind of processing method that is used for digital controlled rib cold bent machine of the present invention is characterized in that it may further comprise the steps: A, the starting point of processing from rib begin with the long S that tunes up 0Rib curve to be processed is cut apart; B, obtain starting point to the chord length L of each cut-point respectively iC, for by S 0, the rib curve that is divided into, tune up long The sagitta H of the circular arc of the correspondence that the place obtains iD, for every root bone curve, obtain one group of { Li, Hi} data; E, will calculate one group the machining control amount when Li, Hi} control automatically as digital controlled rib cold bent machine, and wherein Li is the target feed amount, Hi is a target sagitta amount.
In order to realize this processing method, the invention provides a kind of processing unit (plant) that is used for digital controlled rib cold bent machine, it comprises master cylinder, the controller that is connected with master cylinder, it is characterized in that it comprises three processing chucks 9 that are arranged in parallel, 10,11, two processing in both sides chuck 9,11 is fixing, and middle processing chuck 10 is connected with master cylinder, middle processing chuck 10 is connected with test desk 21, test desk is provided with the sagitta measurement mechanism, also is provided with the chord length measurement mechanism outside test desk, and the sagitta measurement mechanism all is connected with controller with the chord length measurement mechanism.Wherein, the sagitta measurement mechanism comprises the link rod axle 23 that is located on the test desk, and the link rod axle is connected with three sagitta measuring mechanisms that are arranged in parallel, and each sagitta measuring mechanism has a measuring probe 12.Each sagitta measuring mechanism comprises the screw mandrel 19 that is connected with link rod axle 23, motor 10 is connected with screw mandrel 19, screw mandrel 19 is connected with spring block 16, spring block 16 is connected with spring 14, spring 14 is connected with detection probe 12, survey probe 12 and be connected with raster probe 22, test desk 21 is provided with the grating 17 that matches with raster probe 22, and raster probe is connected with controller.The chord length measurement mechanism comprises the Horizontal shifting platform 5 that is slidingly connected with main guide rail 2, the slide plate dolly 6 that is slidingly connected with Horizontal shifting platform 5, Horizontal shifting platform 5 is connected with the first length coding device 1 on being located at main guide rail 2, slide plate dolly 6 is connected with the second length coding device 4 on being located at Horizontal shifting platform 5, and the first length coding device 1 all is connected with controller with the second length coding device 4.
Illustrated among Fig. 1 according to processing method of the present invention, calculated the schematic diagram of the absolute coordinate initial point of rib curve f (x).Cross the starting point P of rib curve f (x) 1, with the long S that tunes up 0, make an arc for radius and to ask for intersection point P with rib curve f (x) 2, cross string Among the point try to achieve P as vertical line 1~ P 2Arc length sagitta H, and meet at K with arc length, be the center of circle with K, be radius is made roundlet with H, cross f (x) starting point P 1Make the tangent line of this roundlet, on tangent line, intercept L 1With the point of intersection of tangents be the absolute coordinate point of origin P 0L wherein 1Length is the relative distance of sagitta measurement mechanism initial point and chord length measurement mechanism initial point, installs the back actual measurement by machine and decides.Sagitta measurement mechanism initial point is the position of first measuring probe, and chord length measurement mechanism initial point is meant the tie point of slide plate dolly and rib.
Long S tunes up 0Size depend on cold-frame bender tonnage size, minimum bending radius size and determining, as shown in Figure 2.When three fulcrum A, B, C cold-frame bender, moment of flexure is L between its fulcrum AC, the BC, and plastically deforming area D when bending radius is R can be by formula
D = L - J 1 + 2 r ′ K 1 K 0 + J
Calculating is asked it.
Wherein: L is distance between the AC and the distance between the BC
J is C point bending post and section bar contact length
r ′ = r 1 + 2 ( K 1 + K 0 2 r ) δ s E r
δ s---the yield limit of material
The elastic modelling quantity of E---material
K 0---the relative coefficient of intensification of material
K 1---the form factor of shaped steel
r = R H
H is a section bar web size
R is a radius of curvature behind the processing sections bending springback
S 0Size should 〉=the D plastically deforming area, also can do suitable adjustment according to the actual tests result.
Fig. 3 shows machining control amount L iAnd H iComputational methods.From f (x) rib origin of curve P1 with the long S that tunes up 0Be divided into P 2, P 3P iFrom the absolute coordinate point of origin P 0Link to each other with P1 and above-mentioned each branch, and obtain the long L of the string of a musical instrument of each line 1, L 2, L 3L iThis group string of a musical instrument length is exactly the controlled quentity controlled variable of the forward/back material of digital controlled rib cold bent machine.In like manner, from f (x) rib origin of curve P 1With the long S that tunes up 0Be divided into P 2, P 3P i, and Locating to tune up long vertical line, obtain the intersection point of the circular arc of vertical line and f (x), is exactly sagitta, is respectively H 1, H 2, H 3H iThese group sagitta data are exactly every section frame bending controlled quentity controlled variable.
The course of work of digital controlled rib cold bent machine is from the absolute coordinate point of origin P 0Beginning is when the rib current location is L 1The time, machine is with regard to crooked P 1P 2The section circular arc makes its desired value sagitta reach H 1When rib is fed to L 2The time, just curved P 2P 3The section circular arc makes its desired value sagitta reach H 2The rest may be inferred, when rib is fed to L iThe time, just curved P iP I+1The section circular arc makes its desired value sagitta reach H i, postpone and continue until end.Advanceable digital controlled rib cold bent machine work rhythm piecemeal that Here it is.
As from the foregoing, L iThe position dimension that has shown the section of being bent rib; H iThe amount of curvature that has then shown the section of being bent rib.One group of machining control amount { L i, H i} jCan generate corresponding rib curve f uniquely i(x).
Fig. 4 is the processing unit (plant) structural representation among the present invention, and the curved body of three fulcrum digital controlled rib cold bent machines processes chuck 11 by fulcrum first processing chuck 9 and fulcrum the 3rd and the fulcrum second processing chuck 10 is formed.Its central bearing point second processing chuck 10 is driven by master cylinder and carries out the front and back bending motion.Fulcrum first and third processing chuck the 9, the 11st, fixed pivot remains unchanged in the frame bending distortion.The sagitta measurement mechanism is installed on the test desk 21 that links to each other with the second processing chuck 10, it is made up of the identical measuring mechanism BO of three cover frame for movements, CE, DF, three cover measuring appliance BO ∥ CE ∥ DF, and all perpendicular to link rod 23, the spacing of BO and CE and CE and DF all equals Fixed length.Every cover measuring appliance of measuring mechanism BO, CE, DF comprises the screw mandrel that is connected with the link rod axle, motor is connected with screw mandrel, screw mandrel is provided with nut, spring block is connected with nut, spring block is connected with spring, and spring is connected with detection allocation tongue bar, surveys the allocation tongue bar and is provided with the detection probe, survey on the allocation tongue bar and also be provided with raster probe, test desk is provided with the grating that matches with raster probe.Its course of work is: drive screw mandrel 19 when motor 20 travels forward, make the thrust of spring block 16 by spring 14, in BENDING PROCESS, make the probe 12 on the detection and location tongue bar 13 prop up rib all the time, by with allocation tongue bar 13 incorporate raster probes 22, just the Y direction displacement that allocation tongue bar 13 moves is read in.No matter the allocation tongue bar moves forward or backward, raster probe 22 is all noted its real displacement size in the Y direction.The center line intersection point O of the axis of link rod axle 23 and BO is the rectangular co-ordinate initial point of this measurement mechanism.
As given machining control amount L iAnd H iAfter, the feeding mechanism of cold-frame bender promotes section bar 8 and rib chuck 7 and slide plate dolly 6, and the rib section bar is moved on two main guide rails by Horizontal shifting platform 5, makes its chord length of ordering to B from the A point reach L i, rib is just crooked in the beginning of B point.Chord length L i = Y oi 2 + X i 2 , Y wherein OiBe the first length coding device measured value, X i=the second length coding device measured value+L 1By sagitta measurement mechanism schematic diagram 5 as can be known, BO, CE, DF detect the tongue bar and probe props up rib section bar linetype edge all the time, and it can dynamically measure Y at any time 1i, Y 2i, Y 3i3 height dimension.Because B, C, 3 X-axis coordinates of D are fixed length, thus the coordinate of 3 of B, C, D be respectively B (0, Y 1i), D (S 0, Y 3i).By plane analytic geometry as can be known, can make a circle at out-of-line excessively 3, its equation of a circle is:
X 2+Y 2+DX+EY+F=0
To survey B, C, the above-mentioned equation of D three point coordinates substitutions, coefficient D, the E, the F that obtain equation of a circle are:
E = Y 1 i 2 - 2 Y 2 i 2 + Y 3 i 2 + S 0 2 2 2 Y 2 i - Y 1 i - Y 3 i
D = ( Y 1 i 2 - Y 3 i 2 - S 0 2 ) - E ( Y 3 i - Y 1 i ) S 0
F = - E Y 1 i - Y 1 i 2 ,
Its radius through B, C, 3 circular arcs of D is:
R i = D 2 4 + E 2 4 - F
And the chord length that B, D link to each other is:
BD ‾ = S 0 2 - ( Y 3 i - Y 1 i ) 2
Pass through the circular arc sagitta of B, C, D three-dimensional coordinates measurement point so
H i = R i - R i 2 - BD ‾ 2 4
When the rib section bar when carrying out bending, checkout gear measures Y 1i, Y 2i, Y 3iData changing, obtain sagitta H as calculated through the circular arc of B, C, D three measurement points iAlso changing.Skene arch is up to arriving desired value H after it is crooked iAfter, master cylinder just stops bending, and the crooked work of this arc section is just finished, and then the bending of next section circular curve is carried out in charging.Go round and begin again like this, thereby reach the bending forming of finishing a root bone curve.

Claims (6)

1, a kind of processing unit (plant) that is used for digital controlled rib cold bent machine, it comprises master cylinder, the controller that is connected with master cylinder, it is characterized in that it comprises three processing chucks that are arranged in parallel, both sides two processing chuck is fixed, and middle processing chuck is connected with master cylinder, middle processing chuck is connected with test desk, test desk is provided with the sagitta measurement mechanism, also is provided with the chord length measurement mechanism outside test desk, and the sagitta measurement mechanism all is connected with controller with the chord length measurement mechanism.
2, a kind of processing unit (plant) that is used for digital controlled rib cold bent machine as claimed in claim 1, it is characterized in that the sagitta measurement mechanism comprises the link rod axle that is located on the test desk, the link rod axle is connected with three sagitta measuring mechanisms that are arranged in parallel, and each sagitta measuring mechanism has a measuring probe.
3, a kind of processing unit (plant) that is used for digital controlled rib cold bent machine as claimed in claim 2, it is characterized in that each sagitta measuring mechanism comprises the screw mandrel that is connected with the link rod axle, motor is connected with screw mandrel, screw mandrel is connected with spring block, spring block is connected with spring, and spring is connected with the detection probe, surveys probe and is connected with raster probe, test desk is provided with the grating that matches with raster probe, and raster probe is connected with controller.
4, as each described a kind of processing unit (plant) that is used for digital controlled rib cold bent machine in the claim 1 to 3, it is characterized in that the chord length measurement mechanism comprises the Horizontal shifting platform that is slidingly connected with main guide rail, the slide plate dolly that is slidingly connected with Horizontal shifting platform, Horizontal shifting platform is connected with the first length coding device on being located at main guide rail, the slide plate dolly is connected with the second length coding device on being located at Horizontal shifting platform, and the first length coding device all is connected with controller with the second length coding device.
5, a kind of processing method that is used for digital controlled rib cold bent machine is characterized in that it may further comprise the steps: A, the starting point of processing from rib begin with the length of tuning up rib curve to be processed to be cut apart; B, obtain starting point to the chord length L of each cut-point respectively iC, for by the long S that tunes up 0The rib curve of cutting apart+becoming, the sagitta H of the circular arc of the correspondence of obtaining at half place of tuning up long iD, for every root bone curve, obtain one group of { Li, Hi} data; E, will calculate one group the machining control amount when Li, Hi} control automatically as digital controlled rib cold bent machine, and wherein Li is the target feed amount, Hi is a target sagitta amount.
6, a kind of processing method that is used for digital controlled rib cold bent machine as claimed in claim 5, it is characterized in that step e comprises again: F, with rib to be processed be installed in three processing chucks on, make the measuring probe of three sagitta measuring mechanisms contact with the processing rib, and make one of the processing rib to place on the slide plate dolly, wherein the distance of first and second measuring probes is half of tuning up long, and the distance of the second and the 3rd measuring probe is half of tuning up long; G, when charging, calculate chord length L according to the value that the first length coding device and the second length coding device record, with L and target feed value Li relatively, to control inlet amount; H, when inlet amount is Li, stop charging, the processing chuck carries out bending to rib in the middle of the master cylinder control, the value that records according to three raster probes is calculated sagitta H simultaneously, when sagitta H reaches desired value H iAfter, master cylinder just stops bending.
CNB2005101124958A 2005-12-30 2005-12-30 Machining apparatus for digital control rib cold bending machining and products produced thereby Active CN100478095C (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102366770A (en) * 2011-10-10 2012-03-07 上海交通大学 Design method of stretch bending loading trace of novel stretch bender
CN101758119B (en) * 2009-11-10 2012-03-21 佛山市禅城区永恒液压机械有限公司 Multi-cylinder built-up section cold-bending automatic molding equipment and processing method thereof
CN103357705A (en) * 2013-07-31 2013-10-23 柳州如洋精密科技有限公司 Measurement device for curve shape of frame
CN105436242A (en) * 2015-12-08 2016-03-30 上海船舶工艺研究所 Photoelectric tracking detecting mechanism for cold frame bending machine
CN107020311A (en) * 2017-05-27 2017-08-08 江苏昊科汽车空调有限公司 A kind of compressor of air conditioner shaped piece bend fixing device
CN107030152A (en) * 2017-05-26 2017-08-11 江苏昊科汽车空调有限公司 A kind of continuous patterning process device of compressor of air conditioner shaped piece
CN109500168A (en) * 2018-11-21 2019-03-22 河南省中智重型机械设备有限公司 Fashioned iron bend processing method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101758119B (en) * 2009-11-10 2012-03-21 佛山市禅城区永恒液压机械有限公司 Multi-cylinder built-up section cold-bending automatic molding equipment and processing method thereof
CN102366770A (en) * 2011-10-10 2012-03-07 上海交通大学 Design method of stretch bending loading trace of novel stretch bender
CN102366770B (en) * 2011-10-10 2013-11-20 上海交通大学 Design method of stretch bending loading trace of novel stretch bender
CN103357705A (en) * 2013-07-31 2013-10-23 柳州如洋精密科技有限公司 Measurement device for curve shape of frame
CN105436242A (en) * 2015-12-08 2016-03-30 上海船舶工艺研究所 Photoelectric tracking detecting mechanism for cold frame bending machine
CN107030152A (en) * 2017-05-26 2017-08-11 江苏昊科汽车空调有限公司 A kind of continuous patterning process device of compressor of air conditioner shaped piece
CN107030152B (en) * 2017-05-26 2019-04-19 江苏昊科汽车空调有限公司 A kind of continuous patterning process device of compressor of air conditioner shaped piece
CN107020311A (en) * 2017-05-27 2017-08-08 江苏昊科汽车空调有限公司 A kind of compressor of air conditioner shaped piece bend fixing device
CN109500168A (en) * 2018-11-21 2019-03-22 河南省中智重型机械设备有限公司 Fashioned iron bend processing method

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