CN103433803B - One-time molding method and equipment for complex curved surface of roller - Google Patents
One-time molding method and equipment for complex curved surface of roller Download PDFInfo
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- CN103433803B CN103433803B CN201310339816.2A CN201310339816A CN103433803B CN 103433803 B CN103433803 B CN 103433803B CN 201310339816 A CN201310339816 A CN 201310339816A CN 103433803 B CN103433803 B CN 103433803B
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000000465 moulding Methods 0.000 title abstract 3
- 238000005520 cutting process Methods 0.000 claims description 20
- 230000033001 locomotion Effects 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 claims description 12
- 238000005096 rolling process Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000004069 differentiation Effects 0.000 claims description 2
- 238000013507 mapping Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005498 polishing Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
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Abstract
The invention discloses a one-time molding method and equipment for the complex curved surface of a roller. The equipment comprises a rack, a motor, a big rotary table, a gap-removal device, a blank workbench, a cutter feeding device and a servo system, wherein the rack is provided with the big rotary table; the big rotary table and the blank workbench are fixed; the cutter feeding device comprises a guide rail, a lower support plate, an upper support plate, a feeding box and a cutter bar; the blank workbench is provided with two spindles which synchronously rotate by taking the Z axis as the rotation center for fixing a blank. Compared with the traditional roller processing, the method and the equipment have the beneficial effects of omitting complex working procedures such as cutter change and regulation and artificial polishing. Meanwhile, three-axis linkage one-time molding is adopted, the production efficiency is improved, and the machining precision is improved with a numerical control method.
Description
Technical Field
The invention relates to a one-step forming method and equipment for a roller with a complex curved surface rolling groove.
Background
Roll processing is a common processing method for many pipes, however, when a rolling mill is used for processing the pipes, the wear of the rollers is very serious, and the rollers on the rolling mill need to be replaced frequently. At present, a rolling hole (namely a pipe forming area) on the existing rolling machine is formed by combining two symmetrical rollers, the rollers are rotating wheels with through holes at the centers, and the outline of the outer ring of each rotating wheel is an arc-shaped groove with a complex curved surface. At present, most of the processing methods for the roller with the complex curved surface adopt a lathe to turn a roller blank, then the turned roller is installed on a special roller boring machine to carry out cam template copying processing, after a positive arc curved surface is processed, the center distance of the two rollers is adjusted to enable a boring cutter to cut with a larger cutting radius, two positive arc curved surfaces on the edge are cut, and finally a smooth curved surface and a chamfer are trimmed in a manual grinding mode. The method has the advantages of various procedures, complex operation, higher technical requirement on workers and low processing efficiency.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a roller one-time forming method and equipment with a groove being a complex curved surface. Compared with the traditional roller processing, the method and the equipment remove complex procedures such as tool changing adjustment, manual polishing and the like; meanwhile, three-axis linkage one-step forming is adopted, so that the production efficiency is improved; and the numerical control method is adopted to improve the processing precision.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a roller one-time forming device with a complex curved surface rolling groove comprises a frame, a motor, a large turntable, a gap removing device, a blank worktable, a cutter feeding device and a servo system; a large turntable is arranged on the frame and is fixed with the blank workbench; the cutter servo feeding device comprises a guide rail, a lower supporting plate, an upper supporting plate, a feeding box and a cutter bar, wherein two rotating shafts which synchronously rotate by taking a Z axis as a rotating center are arranged on the blank workbench and are used for fixing a blank; the feeding box is fixedly connected with a cutter bar, a power conveying mechanism is arranged in the feeding box, the upper supporting plate and the lower supporting plate are internally provided with the power conveying mechanism, and the gap removing device is arranged on the rack and clings to a large turntable or a rotating part connected with the turntable.
The power transmission mechanism arranged in the feeding box is a servo motor or a stepping motor.
The power transmission mechanisms arranged in the upper supporting plate and the lower supporting plate are servo motors, air cylinders or hydraulic cylinders.
A roll one-time forming method with a complex curved surface rolling groove comprises the steps of surveying and mapping a finished product standard workpiece, fitting a curved surface of a roll working area, dispersing curved surface data, establishing a database, converting the data in the database into a program instruction and leading the program instruction into a control system; the control system reads the program instruction and controls the equipment to operate; wherein the large turntable drives the blank worktable to rotate around the y axis at a certain angular speed; the rotation of the large turntable controls the cutting main motion of the section arc curve profile, and the rotation speed of the large turntable determines the cutting speed of the section arc curve profile; the rotating shaft rotates to drive the two roller blanks to rotate around the z axis in opposite directions at a certain speed; the rotation of the rotating shaft controls the forming cutting movement of the circumferential curve outline of the workpiece, and the rotating speed of the rotating shaft determines the forming cutting of the circumferential curve outline of the workpiece and the switching rate of adjacent processing sections of the workpiece; the upper supporting plate drives the feeding box to drive a cutter bar and a cutter which are fixed on the feeding box, so that the cutter is fed to a specified position in the x-axis direction to cut a first section of circular arc; when the large turntable rotates to a corresponding angle, the feeding box performs feeding in the opposite direction of the x axis at a certain speed relative to the upper supporting plate; the feed motion of the feed box controls the cutting feed motion in the Y0 direction of the profile of the section curve, and the feed speed of the feed box influences the curvature radius of the second section of the circular arc curve; the three-axis linkage forms the generating and forming processing of the three-dimensional curved surface of the two symmetrical roller blanks.
And the curved surface of the working area of the fitting roller is subjected to linear interpolation fitting by utilizing the measured discrete data to form a continuous curved surface combined by curved surfaces with different overlapped boundaries, and then is subjected to secondary fitting after differentiation by the continuous curved surface to form a tangential continuous curved surface.
The invention has the beneficial effects that: compared with the traditional roller processing, the complex procedures of tool changing adjustment, manual polishing and the like are eliminated; meanwhile, three-axis linkage one-step forming is adopted, so that the production efficiency is improved; and the numerical control method is adopted to improve the processing precision.
Drawings
FIG. 1 is a structural reference diagram of the present invention;
FIG. 2 is a schematic view of the shape of a roll according to the present invention;
FIG. 3 is a schematic sectional view of a pair of rolls according to the present invention;
FIG. 4 is a schematic drawing of a point of a cross-sectional curve of a roll according to the present invention;
FIG. 5 is a structural reference diagram of a derivative example of the present invention.
Wherein,
FIG. 11-frame, 2-motor, 3-carousel, 4-blank, 5-cutter bar, 6-blank table, 7-feed box, 8-lower pallet, 9-upper pallet, 10-guide, 11-rotation axis, 12-gap removal device
Detailed Description
A one-time forming device for a complex curved surface of a roller comprises a frame, a motor, a large turntable, a blank worktable, a cutter feeding device and a servo system. The machine frame is provided with a large turntable 3, the large turntable is driven to rotate by a spindle motor 2 through a gear set and is used for fixing and driving a blank workbench 6 to rotate. Two rotating shafts 10 which rotate synchronously are arranged on the blank workbench and are used for fixing blanks. The cutter feeding device comprises a guide rail 9, a sliding supporting plate 8, a sliding supporting plate 7 and a cutter bar 5. The supporting plate 7 is fixedly connected with the cutter bar 5, and a power conveying mechanism is arranged in the supporting plate and is a servo motor. The inside of the sliding supporting plate 8 is provided with a power conveying mechanism which can be a servo motor, an air cylinder or a hydraulic cylinder and the like. The servo system servo drive controls the spindle motor to drive the turntable to rotate, controls the cutter feeding device to perform servo feeding, and controls the rotating shaft on the blank workbench to rotate.
Based on the above equipment, for a roll with a complex curved surface, the invention discloses an effective forming method, the shape of the cross section of the roll is shown in figure 2, the effective working part of the roll is formed by smoothly connecting a regular circular arc and two reverse circular arcs, the whole roll has 3 sections with different shapes, each section is composed of arc lines and the radius of the arc lines is different, firstly, the standard roll finished product is mapped, the geometric center of the roll is used as the original point, the standard roll is divided into n sections by a certain angle α as shown in figure 3, each section is provided with a certain number of points, the coordinate of each point is measured, for example, as shown in figure 4, the ith point is taken, and the coordinate (x) of the ith point is measuredi，yi) From the formula xi'=a-xi；yi′=b+yiCalculating to obtain actual coordinates (x)i'，yi') the series of actual coordinates obtained are discrete data about the shape of the roll. Constructing an integral continuous function by using the obtained series of discrete variables through a piecewise linear interpolation method: let all points x coordinate x of values in the plane of fig. 40,x1,…,xnCorresponding y coordinate y0,y1,…,ynThe interpolated basis function is lj(xj) Fitting a linear interpolation polynomial of degree n toAnd then, carrying out surface fitting by using a result of the cross-section curve fitting: using curved surfaces QjIs dotted at (x)j,p(xj) α) interpolation method, i.e.And (3) establishing a fitting surface to form a point-continuous (also called G0 continuous) surface, namely a C-level surface. And performing differential processing on the C-level curved surface to obtain point coordinates to obtain discrete data, and performing surface approximation fitting on the discrete data by using a least square method to form a tangential continuous (also called G1 continuous) curved surface, namely a B-level curved surface. And after the B-level curved surface of the rolling working area of the roller is obtained, dividing the curved surface by a smaller angle and discretizing the curved surface in a differential form. And finally, converting the data in the database into program instructions by the computer and transmitting the program instructions to the control system.
And the control system reads the program instruction and controls the equipment to operate. Wherein the large turntable drives the blank worktable to rotate around the y axis at a certain angular speed. The rotation of the large turntable controls the main cutting movement of the cross-section circular arc curve profile shown in fig. 4, and the rotation speed of the large turntable determines the cutting speed of the cross-section circular arc curve profile. The rotating shaft rotates to drive the two roller blanks to rotate around the z-axis at a certain speed in opposite directions. The rotation of the rotating shaft controls the profile cutting movement of the workpiece circumferential curved profile shown by the dotted line in fig. 3, and the rotating speed thereof determines the rate of profile cutting of the workpiece circumferential curved profile and switching of the adjacent machining sections of the workpiece. The upper supporting plate drives the feeding box to drive the cutter rod and the cutter, so that the cutter is fed to a specified position in the x-axis direction to cut a first arc R1 shown in figure 4. When the large turntable rotates to a corresponding angle, the feeding box performs feeding in the opposite direction of the x axis at a certain speed relative to the upper supporting plate. The feed motion of the feed box controls the cutting feed motion in the direction Y0 of the cross-sectional curve profile shown in fig. 4, and the feed speed thereof affects the size of the radius of curvature of the curve of the second arc segment R2. The three-axis linkage forms the generating and forming processing of the three-dimensional curved surface of the two symmetrical roller blanks.
After the data are transmitted to the control system by the computer, the control system controls the equipment to operate to form curved surface generating cutting of the workpiece. The generating movement method can be a double-pallet movement superposition method or a single-pallet software control method. The motion superposition method of the double supporting plates is as follows: after the workpiece is clamped, a power conveying mechanism of the control system drives the lower supporting plate 8 to enable the upper supporting plate 9 and the feeding box connected to the lower supporting plate 8 to reach the designated positions, so that the cutter reaches the processing initial position. And the control system controls the driving spindle motor to operate to drive the large turntable to rotate so as to drive the blank workbench to rotate, so that a pair of sections of the groove curved surfaces on the rollers processed in pairs are cut. And meanwhile, the rotating shaft on the blank workbench is controlled to run at a certain speed, so that the roll groove curved surfaces on the rollers processed in pairs can complete 360-degree circular cutting. When the rotating shaft drives the workpiece to rotate by a certain angle, the power transmission mechanism of the control system drives the upper supporting plate 9, so that the cutter fixed on the feeding box changes the feeding amount, and the size of the main circular arc R1 of the curved surface of the groove on the roller shown in FIG. 4 is changed. When the large turntable rotates to a certain angle, the control system sends a data signal to a servo motor for controlling the feeding box, so that the feeding box 7 is fed along the direction of the track on the upper supporting plate 9 at a certain speed, and the generation of a reverse arc (shown as an arc of section R2 in figure 4) of the groove curved surface on the roller to be processed is controlled. At the moment, the three shafts of the device are linked to form the generating and forming processing of the three-dimensional curved surfaces of the two symmetrical roller blanks. The single-pallet software implementation method is as follows: the upper supporting plate 9 is removed, the feeding box 7 is connected with the lower supporting plate, a servo motor of the feeding box is controlled by a software program so as to control the forward or reverse feeding motion of the feeding box in the x direction, at the moment, the change of the feeding amount of the cutter due to the change of the main arc R1 of the rolling groove curved surface on the roller caused by the rotation of the rotating shaft and the change of the feeding amount of the cutter due to the cutting of the reverse arc R2 of the rolling groove curved surface on the roller after the large turntable rotates to a certain angle are realized by the superposition of the control motions of the servo motor of the feeding. The obtained superposition motion is superposed with the rotation motion of the large turntable around the Y axis to form the generating cutting processing of the complex curved surface of the roll groove of the roller.
Derived examples:
as shown in fig. 5, a coordinate system is established, wherein the X-axis and the Y-axis of the coordinate system are fixed, the normal direction of the upper surface of the blank worktable is taken as the Z-axis direction, and the Z-axis is perpendicular to the Y-axis and rotates around the Y-axis. The large turntable rotates around a Y axis, the rotating shaft drives a workpiece to rotate around a Z axis, the feeding box 7 and the upper supporting plate 9 can linearly move along the X axis direction, and the lower supporting plate 8 moves up and down along the Y axis direction.
The basic structure of the embodiment is the same as that of the basic embodiment, and the difference is that the equipment is made into a vertical structure and supported by a 13-end-face bearing, so that the height of the rotary table is reduced, the structure is more compact, the workpiece is more conveniently clamped, and the working driving torque of the large rotary table is reduced.
Claims (5)
1. The utility model provides a roll one shot forming equipment that grooving is complicated curved surface which characterized in that: the device comprises a frame, a motor, a large turntable, a gap removing device, a blank worktable and a cutter servo feeding device; a large turntable (3) is arranged on the rack, and the large turntable (3) is fixed with a blank workbench (6); the cutter servo feeding device comprises a guide rail (10), a lower supporting plate (8), an upper supporting plate (9), a feeding box (7) and a cutter bar (5), wherein two rotating shafts (11) which synchronously rotate by taking a Z axis as a rotating center are arranged on a blank workbench and are used for fixing a blank (4); feed box (7) fixed connection cutter arbor (5), feed box (7) inside is equipped with power conveying mechanism, upper bracket (9) and bottom plate (8) inside be equipped with power conveying mechanism, remove clearance device (12) and install in the frame and hug closely the rotating member that big carousel or carousel are connected.
2. The roll one-shot forming apparatus with a complicated curved groove according to claim 1, wherein: the power transmission mechanism arranged in the feeding box (7) is a servo motor or a stepping motor.
3. The roll one-shot forming apparatus with a complicated curved groove according to claim 1, wherein: the power transmission mechanisms arranged in the upper supporting plate (9) and the lower supporting plate (8) are servo motors, air cylinders or hydraulic cylinders.
4. A roller one-time forming method with a complex curved surface rolling groove is characterized in that: surveying and mapping a finished product standard workpiece, fitting a curved surface of a roller working area, dispersing curved surface data, establishing a database, converting the data in the database into a program instruction and importing the program instruction into a control system; the control system reads the program instruction and controls the equipment to operate; wherein the large turntable drives the blank worktable to rotate around the y axis at a certain angular speed; the rotation of the large turntable controls the cutting main motion of the section arc curve profile, and the rotation speed of the large turntable determines the cutting speed of the section arc curve profile; the rotating shaft rotates to drive the two roller blanks to rotate around the z axis in opposite directions at a certain speed; the rotation of the rotating shaft controls the forming cutting movement of the circumferential curve outline of the workpiece, and the rotating speed of the rotating shaft determines the forming cutting of the circumferential curve outline of the workpiece and the switching rate of adjacent processing sections of the workpiece; the upper supporting plate drives the feeding box to drive a cutter bar and a cutter which are fixed on the feeding box, so that the cutter is fed to a specified position in the x-axis direction to cut a first section of circular arc (R1); when the large turntable rotates to a corresponding angle, the feeding box performs feeding in the opposite direction of the x axis at a certain speed relative to the upper supporting plate; the feed motion of the feed box controls the cutting feed motion in the Y0 direction of the cross-sectional curve profile, and the feed speed of the feed box influences the curvature radius of the curve of the second arc (R2); the three-axis linkage forms the generating and forming processing of the three-dimensional curved surface of the two symmetrical roller blanks.
5. The one-time forming method of the roller with the groove being the complex curved surface as claimed in claim 4, wherein: and the curved surface of the working area of the fitting roller is subjected to linear interpolation fitting by utilizing the measured discrete data to form a continuous curved surface combined by curved surfaces with different overlapped boundaries, and then is subjected to secondary fitting after differentiation by the continuous curved surface to form a tangential continuous curved surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310339816.2A CN103433803B (en) | 2013-08-06 | 2013-08-06 | One-time molding method and equipment for complex curved surface of roller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310339816.2A CN103433803B (en) | 2013-08-06 | 2013-08-06 | One-time molding method and equipment for complex curved surface of roller |
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| CN103433803A CN103433803A (en) | 2013-12-11 |
| CN103433803B true CN103433803B (en) | 2017-05-03 |
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| CN111906676B (en) * | 2020-07-01 | 2022-07-29 | 山东森吉轴承科技有限公司 | Device for rotationally polishing bearing outer ring based on circle characteristics |
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| CN202377589U (en) * | 2011-09-20 | 2012-08-15 | 浙江宝时德钢管有限公司 | Device special for machining rollers of hot rolling machine |
| CN202622491U (en) * | 2012-05-21 | 2012-12-26 | 昆山华辰重机有限公司 | Automatic grinding wheel setting system of numerically-controlled roller grinding machine with movable workbench |
| CN202763222U (en) * | 2012-07-13 | 2013-03-06 | 济南重工股份有限公司 | Dividing apparatus for machining mill roll shaft splines |
| CN203018772U (en) * | 2012-10-19 | 2013-06-26 | 柳州正菱重型数控机床有限公司 | Roller milling machine |
| CN102873545A (en) * | 2012-10-19 | 2013-01-16 | 柳州正菱重型数控机床有限公司 | Roll milling machine |
| CN203636102U (en) * | 2013-08-06 | 2014-06-11 | 温州大学 | One-step molding device for roller with complex surface |
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Address after: 325000 Zhejiang, Ouhai, South East Road, No. 38, Wenzhou National University Science Park Incubator Applicant after: Wenzhou University Address before: 325000 Zhejiang province Chashan Wenzhou Higher Education Park Wenzhou University College of mechanical and electrical engineering Applicant before: Wenzhou University |
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Effective date of registration: 20190722 Address after: 213100 Xiangquan Village, Huangli Town, Wujin District, Changzhou City, Jiangsu Province Patentee after: Changzhou Huichen Roller Co.,Ltd. Address before: 518110 Building 1619, No. 3, Queshan Yunfeng Road, Gaofeng Community, Dalang Street, Longhua District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Pengbo Information Technology Co.,Ltd. Effective date of registration: 20190722 Address after: 518110 Building 1619, No. 3, Queshan Yunfeng Road, Gaofeng Community, Dalang Street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Pengbo Information Technology Co.,Ltd. Address before: 325000 Zhejiang, Ouhai, South East Road, No. 38, Wenzhou National University Science Park Incubator Patentee before: Wenzhou University |
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Denomination of invention: A one-time forming method and equipment for complex curved surfaces of rolling rolls Effective date of registration: 20231222 Granted publication date: 20170503 Pledgee: China Construction Bank Corporation Changzhou Wujin sub branch Pledgor: Changzhou Huichen Roller Co.,Ltd. Registration number: Y2023980073303 |