CN112935467A - Automatic overlaying equipment and method for compression roller grids - Google Patents
Automatic overlaying equipment and method for compression roller grids Download PDFInfo
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- CN112935467A CN112935467A CN201911263748.XA CN201911263748A CN112935467A CN 112935467 A CN112935467 A CN 112935467A CN 201911263748 A CN201911263748 A CN 201911263748A CN 112935467 A CN112935467 A CN 112935467A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
Abstract
The invention relates to the field of compression roller mesh overlaying, in particular to compression roller mesh automatic overlaying equipment and a mesh automatic overlaying method. The width of the welding seam is controlled by the swing amplitude of the welding gun, the height control is effectively solved by the wire feeding speed of the filler wire, and the height and the width uniformity of various compression roller grids are ensured.
Description
Technical Field
The invention relates to the field of compression roller mesh surfacing, in particular to compression roller mesh automatic surfacing equipment and a mesh automatic surfacing method.
Background
The roller press, also known as an extrusion mill and a roller mill, is novel cement energy-saving grinding equipment developed in the middle of the 80 s, has a ball mill pre-grinding system with high replacement energy consumption and low efficiency, and has the function of reducing steel consumption and noise, the yield of the ball mill system can be improved by 30-50% by using the roller press as the pre-grinding equipment, 0.08mm fine materials in a material cake after extrusion account for 20-35%, less than 2mm fine materials account for 65-85%, the internal structure of small particles is filled with a plurality of micro cracks due to extrusion, and the grindability is greatly improved, so the roller press is widely used by cement plants. With the vigorous development of the cement industry, the number of roller presses is increasing day by day.
The service life of the press rolls in the roll press directly affects the output of the cement plant. At present, an extrusion roller is divided into a smooth roller surface and a roller surface with a protruding grid; although smooth rollers are easy to manufacture, low in cost and simple to maintain, the smooth rollers are used less and less, the basic reasons are that the occlusion angles are small, extruded cakes are thin, the yield is low, no material cushion exists between a moving roller and a static roller to protect the roller surface, and the abrasion is fast. Therefore, the press roll with the mesh is produced. The roller surface grid patterns (as shown in figure 1) of the roller with the grids mainly comprise: a) wear-resistant transverse stripes, b) diamond-shaped wear-resistant hard point patterns, c) diamond-shaped non-hard point patterns, d) round hard point wear-resistant patterns, e) sawtooth-shaped wear-resistant patterns, f) herringbone wear-resistant patterns, g) short-rod-shaped wear-resistant patterns and the like. Wherein the use effect of the diamond plus point grid is optimal.
The existing grid press roller is processed by forging alloy steel into a blank, machining and heat treating the blank into a smooth press roller, and overlaying grid patterns on the smooth press roller. The existing surfacing grid is similar to a manual method, the efficiency is low, the quality is not well guaranteed, and the use is influenced by the height.
In addition, the timely surfacing maintenance of the abrasion of the surface of the compression roller of the roller press is also the key for ensuring the service life of the roller press. The diamond grid added on the surface has great influence on the powder yield of the roller press equipment, but the online repair field condition of the roller press is limited, and the automatic surfacing equipment which is designed aiming at the roller press and is convenient for online or offline repair is urgently needed. The existing rolling automatic surfacing welding equipment is disclosed in application number 200910060104.0 [ a surfacing welding special machine applied to a heavy roller or an extrusion roller ], and comprises a stand, a device for supporting and positioning a workpiece, a device for welding the workpiece, a driving device and a PCL control system of the whole machine; the device for supporting and positioning the workpiece comprises a main shaft box and at least two adjustable supporting rotary tires, wherein the main shaft box and the adjustable supporting rotary tires are used for aligning, clamping and driving the workpiece to rotate; the device for welding the workpiece comprises a side hanging trolley which is arranged on the side surface of the base, and a welding flux recycling machine and a lifting welding cantilever which can be used for surfacing are also arranged on the side hanging trolley. The submerged arc surfacing equipment is specially designed for heavy workpieces such as a roller, a squeeze roller, a heavy-duty hydraulic cylinder and the like, the working efficiency and the quality of the submerged arc surfacing equipment can be greatly improved, but the problem of controlling the stacking height of rhombic and herringbone grids cannot be solved, particularly the rhombic grid surfacing is realized by rotating a press roller, reciprocating a welding gun to form zigzag stripes and overlapping a plurality of zigzag stripes at certain intervals to form the rhombic grids. The reciprocating motion of the welding gun, the speed change process that the speed is increased from zero to the welding speed and then is reduced from the welding speed to zero, and the superposition position of two welding lines can not ensure the pile height and the width to be uniform.
It can be seen that the above-mentioned prior art apparatus for build-up welding of a grid in the manufacture and maintenance of a press roll cannot meet the production requirements and still needs to be further improved. In order to solve the above problems, the related manufacturers have tried to solve the problems without diligent effort, but it has not been found that suitable designs have been developed for a long time, which is obviously a problem to be solved urgently by the related manufacturers. Therefore, how to create a new automatic overlaying welding device for roller grid is one of the important research and development issues, and is also an object of great improvement in the industry.
In view of the above problems of the conventional roller grid overlaying, the inventor of the present invention has actively researched and innovated based on practical experience and professional knowledge of many years of design and manufacture of such products in cooperation with the application of theory, in order to create a new roller grid automatic overlaying device and a construction method thereof, which can improve the efficiency and quality of the conventional roller grid overlaying, automatically adjust the filling amount of the welding wire as required during the overlaying process, and maintain the uniformity of height and width. After continuous research and design and repeated trial and improvement, the invention with practical value is finally created.
Disclosure of Invention
The invention mainly aims to overcome the problems of the existing roller grid surfacing and provide a novel roller grid automatic surfacing device and a construction method thereof.
The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme.
The invention provides automatic overlaying equipment for a compression roller grid, which comprises a numerical control automatic welding machine, a numerical control central supporting device provided with an encoder and used for horizontally mounting a compression roller, a numerical control movement mechanism provided with a wire feeding mechanism and a welding gun, an arc sensor and a control box, wherein a parameter input control screen is arranged on the control box, a control circuit in the control box comprises a microprocessor, a compression roller rotating speed control module, a welding parameter control module and a welding gun movement control module, the encoder, the arc sensor and the parameter input control screen are connected with the input end of the microprocessor, and the output of the microprocessor is connected with the compression roller rotating speed control module, the welding parameter control module and the welding gun movement control module.
The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.
According to the automatic overlaying equipment for the compression roller grids, the numerical control automatic welding machine is a single-arc double-wire open arc automatic welding machine, one welding wire and a workpiece form an arc welding loop, the other welding wire is a filler wire, and the welding parameter control module comprises arc pressure control, current control, filler wire speed control and welding gun motion control.
In the foregoing automatic overlay welding device for roller grid, the numerical control movement mechanism includes: the device comprises an X-axis beam parallel to the axis of a press roll and arranged above a numerical control center, stand columns arranged at two ends of the X-axis beam and a numerical control trolley arranged on the beam, wherein a vertical slide rail is arranged on the trolley, a slide plate is arranged on the vertical slide rail through a servo motor and a transmission mechanism, and a welding gun and a wire feeding mechanism are arranged on the slide plate.
In the above mentioned automatic overlaying welding device for mesh of press roller, the numerical control motion mechanism is a three-dimensional numerical control motion mechanism comprising: the gantry comprises a portal frame, an X-axis cross beam and a numerical control trolley, wherein the portal frame is arranged on two sides of a numerical control center supporting device and consists of a stand column and a Y-axis horizontal beam, the X-axis cross beam is arranged on the Y-axis horizontal beam through a motor driving mechanism, the numerical control trolley is arranged on the X-axis cross beam, a vertical slide rail is arranged on the trolley, a slide plate is arranged on the vertical slide rail through a servo motor and a transmission mechanism, and a welding gun and a wire feeding mechanism are arranged on.
According to the automatic overlaying equipment for the compression roller grids, the transmission mechanism is a gear rack transmission mechanism or a ball screw transmission mechanism.
The automatic overlaying welding equipment for the compression roller grids comprises a numerical control movement mechanism, a three-dimensional movement robot and a control system.
Aforementioned automatic build-up welding equipment of compression roller net, wherein numerical control center strutting arrangement is numerical control gyro wheel frame, or numerical control center chuck, numerical control center chuck include X axle base, initiative chuck and with the driven chuck that the initiative chuck is relative, driven chuck cunning is located on the X axle base.
The automatic overlaying welding equipment for the compression roller grid is characterized in that the encoder is a photoelectric incremental encoder.
The invention also provides a method for automatically overlaying the meshes of the compression roller by using the automatic overlaying equipment for the meshes of the compression roller, which comprises the following steps:
firstly, a press roll to be built-up welded is arranged between a driving chuck and a driven chuck of a numerical control center chuck and is clamped tightly;
secondly, inputting the diameter of a compression roller, the length of the compression roller, grid pattern selection, the diameter of an arc welding wire, the diameter of a filler wire and welding speed on a parameter input control screen of a control box; wherein the parameters input by each grid graph comprise:
(1) horizontal stripes: the number of the net wires, the width of the net wires and the pile height of the net wires are counted;
(2) axial sawtooth lines: the number of the lines, the frequency of the saw teeth, the swing amplitude, the width of the network cable and the pile height of the network cable;
(3) circumferential sawtooth lines: the number of the lines, the frequency of the saw teeth, the swing amplitude, the width of the network cable and the pile height of the network cable;
(4) herringbone lines: the number of the net wires, the spiral angle, the width of the net wires and the pile height of the net wires are equal;
(5) diamond pattern: circumferential number, axial number, mesh wire width, mesh wire stacking height and molding mode;
(6) dot: circumferential points, axial points, dot diameters, dot heights and arrangement modes;
(7) adding dots on the diamonds:
(8) short bar-shaped grain: circumferential number, axial number, short rod width, short rod height and arrangement mode;
and thirdly, adjusting the welding gun to the initial position of the surfacing, and pressing a starting switch to automatically perform the surfacing.
According to the automatic overlaying method for the compression roller grid, two diamond pattern forming modes are adopted: forming semi-rhombus saw teeth and cross forming twill; setting the circumferential central diagonal length of the rhombic grid as A and the axial central diagonal length of the rhombic grid X as B;
the semi-rhombus sawtooth is formed by the following steps: the press roll rotates at a peripheral speed of AxVWelding of/(A2+B2)1/2The welding gun reciprocates along the X axis at a speed of B X VWelding of/(A2+B2)1/2The reciprocating distance is B/2, the rotating speed of the numerical control center chuck is synchronously controlled in the time period that the reciprocating motion speed of the welding gun is changed from V to 0 and then from 0 to V, the rotating speed of the compression roller is synchronously changed from omega to 0 and then from 0 to omega, the wire feeding speed of the filler wire is changed while the welding speed is changed, so that the surfacing height is controlled, and a first circumferential sawtooth pattern with the same height is formed on the surface of the compression roller in a surfacing mode; transversely moving a welding gun B/2 and adding one half of the width of a welding seam, simultaneously rotating a press roller to circumferentially move A/2 and adding one half of the width of the welding seam, performing second circumferential sawtooth pattern surfacing, forming diamond patterns by the two sawtooth patterns, and sequentially performing all diamond pattern surfacing;
the cross forming of the twill is as follows: the press roll rotates at a peripheral speed of AxVWelding of/(A2+B2)1/2The welding gun reciprocates along the X axis at a speed of B X VWelding of/(A2+B2)1/2The reciprocating distance is the length of a compression roller and the width of a welding seam, the rotating speed of a numerical control center chuck is synchronously controlled in the time period that the reciprocating speed of a welding gun is changed from V to 0 and then from 0 to V, the rotating speed of the compression roller is synchronously changed from omega to 0 and then from 0 to omega, the wire feeding speed of a filler wire is required to be changed at the welding speed change and the overlaying position of the overlaying welding seam so as to control the overlaying height, and a first circumferential sawtooth pattern with the same height and the same axial length is overlaid on the surface of the compression roller; the rotating press roller moves along the circumferential direction by A/2 plus one half of the width of the welding seamAnd performing the second circumferential sawtooth pattern surfacing, and sequentially performing all diamond pattern surfacing.
In the automatic overlaying method for the compression roller grid, the dot overlaying: after the diameter of the compression roller, the length of the compression roller, the number of circumferential points, the number of axial points, the diameter of the circular points, the height of the circular points and the arrangement mode are input, a start button is pressed, a microprocessor calculates the central position of each welding point according to input data, controls a welding gun to take the central position as the center, reduces one-half of the melting width of the radius of the circular points to be the radius, cooperates with a numerical control center chuck to build up welding on the surface of the compression roller in a circle drawing motion, arcs are closed at the center of the.
The automatic overlaying equipment for the compression roller grids and the automatic overlaying method for the grids can achieve considerable technical progress and practicability, have wide industrial utilization value and at least have the following advantages:
1. the invention solves the control problem of various grid forming, controls the width of a welding seam through the swing amplitude of the welding gun, effectively solves the height control through the wire feeding speed of the filler wire, and ensures that the stacking height and the width of various compression roller grids are uniform and consistent.
2. The method adopts a microcomputer numerical control technology, sets a surfacing operation process through software programming, sets parameters, changes a surfacing process and realizes flexible manufacturing.
3. The method is simple to operate, and the surfacing process of the workpiece is automatically finished after one-key starting.
4. The controller is provided with a database for storing various welding process specifications of different press rollers and different grid patterns, so that the quality of the surfacing grid is ensured.
5. Because the controller adopts a numerical control system, various patterns of the surfacing are compiled by adopting G codes special for the numerical control system, so that the required patterns can be welded, and some specific patterns or figures can also be welded.
In summary, the automatic overlaying equipment for the compression roller grid and the automatic overlaying method for the grid of the invention have the advantages and practical values, are greatly improved in structure or function of the method and the equipment, have obvious progress in technology, produce good and practical effects, have enhanced outstanding efficacy compared with the existing equipment for the compression roller grid overlaying, are more practical, have industrial wide utilization value, and are a novel, improved and practical new design.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic representation of various grid patterns of the weld overlay of the present invention.
FIG. 2 is a schematic structural diagram of the automatic overlaying device for the compression roller grid.
Fig. 3 is a block diagram of a controller for a roll grid automatic build-up welding apparatus according to the present invention.
Detailed Description
In order to further explain the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be made with reference to the accompanying drawings and preferred embodiments of the present invention for the automatic roller grid overlaying device and the automatic grid overlaying method according to the present invention.
Referring to fig. 2 and 3, the automatic overlay welding device for a roller grid according to a preferred embodiment of the present invention includes a numerical control automatic welding machine, a numerical control center supporting device 1 equipped with an encoder and horizontally installed on a roller, a numerical control movement mechanism 4 equipped with a wire feeding mechanism 2 and a welding gun 3, a control box 5 and an arc sensor 7, wherein the control box 5 is provided with a parameter input control screen 6, a control circuit (as shown in fig. 3) in the control box includes a microprocessor 10, a roller rotation speed control module 11, a welding parameter control module 12 and a welding gun movement control module 13, the encoder, the arc sensor and the parameter input control screen are connected to an input end of the microprocessor 10, and an output of the microprocessor 50 is connected to the roller rotation speed control module 51, the welding parameter control module 52 and the welding gun movement control module 53.
The numerical control automatic welding machine is a single-arc double-wire open arc automatic welding machine, one welding wire 21 and a workpiece form an arc welding loop, the other welding wire is a filler wire 22 and is input from the front side of a molten pool, and the welding parameter control module 52 comprises an arc voltage control 521, a current control 522 and a filler wire speed control 523.
When the welding device works, the microprocessor is used for controlling the welding speed according to the input diameter of the compression roller, the length of the compression roller, grid pattern parameters, the diameter of an arc welding wire, the diameter of a filler wire and the input welding speed; automatically carrying out grid surfacing on the compression roller through calculation, and controlling the surfacing height by controlling the wire feeding speed of the filler wire according to the requirement; and in the welding process, the speed of the filler wire is controlled in real time according to the information fed back by the arc sensor so as to ensure the height and the width of the finally formed welding seam.
As shown in fig. 2, the numerical control movement mechanism 4 includes: the device comprises an X-axis beam 41 which is arranged above a numerical control center supporting device 1 and is parallel to the axis of a press roll, upright posts 42 which are arranged at two ends of the X-axis beam 41, and a numerical control trolley 43 which is arranged on the beam, wherein a vertical slide rail 44 is arranged on the trolley 43, a slide plate 45 is arranged on the vertical slide rail 44 through a servo motor 46 and a transmission mechanism, and the welding gun 3 and the wire feeding mechanism 2 are arranged on the slide plate 45. And the controller controls the trolley on the numerical control movement mechanism to move in the X-axis direction and the Z-axis direction, and completes the surfacing of the grid pattern by matching with the rotation of the numerical control center chuck.
As another embodiment, the three-dimensional numerical control motion mechanism includes: the gantry comprises a portal frame, an X-axis cross beam and a numerical control trolley, wherein the portal frame is arranged on two sides of a numerical control center supporting device and consists of a stand column and a Y-axis horizontal beam, the X-axis cross beam is arranged on the Y-axis horizontal beam through a motor driving mechanism, the numerical control trolley is arranged on the X-axis cross beam, a vertical slide rail is arranged on the trolley, a slide plate is arranged on the vertical slide rail through a servo motor and a transmission mechanism, and a welding gun and a wire feeding mechanism are arranged on. The embodiment adds Y-axis motion control of the trolley, and when the weight of the compression roller is large, large energy is consumed by frequent speed regulation. In the embodiment, the press roller can move at a constant speed, and the movement control of the trolley in the Y-axis direction replaces the speed change of the press roller, so that the surfacing of various grid patterns is realized.
The transmission mechanism is a gear rack transmission mechanism or a ball screw transmission mechanism.
The numerical control motion mechanism can also be a three-dimensional motion robot.
The numerical control center supporting device 1 is a numerical control roller frame, a roller frame is used for supporting a workpiece, and in order to avoid the transmission gap of the workpiece as much as possible, the workpiece is driven by adopting a direct connection and hard connection mode. The servo system drives the welding gun so that the welding gun can be matched with the rotating speed of the workpiece at any time, and the welding gun operates in a continuous welding mode from left to right and then from right to left, so that the arrangement and height increase of the grid welding bead on the roller surface are completed.
As shown in fig. 2, the numerical control center supporting device 1 is a numerical control center chuck, the numerical control center chuck includes an X-axis base 11, a driving chuck 12 and a driven chuck 13 opposite to the driving chuck 12, and the driven chuck 13 is slidably disposed on the X-axis base to adapt to the lengths of different press rollers. The chuck has the advantages that the center line of the compression roller shaft can be kept horizontal in the construction process, the rotating speed can be accurately controlled, and the chuck is suitable for compression rollers with various diameters.
The encoder is a photoelectric incremental encoder, a Z pulse is arranged in the photoelectric incremental encoder and is an absolute zero point of the encoder, a signal of the Z pulse can be used as the position of a first welding arc starting point, and the position of the Nth arc starting point can be adjusted by using the Z pulse offset pulse amount or by adjusting and changing the position of the welding starting point to change the offset of the welding arc starting point.
The invention provides a method for automatically overlaying a compression roller grid by using the automatic overlaying equipment for the compression roller grid, which comprises the following steps:
firstly, a press roll to be built-up welded is arranged between a driving chuck and a driven chuck of a numerical control center chuck and is clamped tightly;
secondly, inputting the diameter of a compression roller, the length of the compression roller, grid pattern selection, the diameter of an arc welding wire, the diameter of a filler wire and welding speed on a parameter input control screen of a control box; wherein the parameters input by each grid graph comprise:
(1) horizontal stripes: the number of the net wires, the width of the net wires and the pile height of the net wires are counted;
(2) axial sawtooth lines: the number of the lines, the frequency of the saw teeth, the swing amplitude, the width of the network cable and the pile height of the network cable;
(3) circumferential sawtooth lines: the number of the lines, the frequency of the saw teeth, the swing amplitude, the width of the network cable and the pile height of the network cable;
(4) herringbone lines: the number of the net wires, the spiral angle, the width of the net wires and the pile height of the net wires are equal;
(5) diamond pattern: circumferential number, axial number, mesh wire width, mesh wire stacking height and molding mode;
(6) dot: circumferential points, axial points, dot diameters, dot heights and arrangement modes;
(7) adding dots on the diamonds:
(8) short bar-shaped grain: circumferential number, axial number, short rod width, short rod height and arrangement mode;
and thirdly, adjusting the welding gun to the initial position of the surfacing, and pressing a starting switch to automatically perform the surfacing.
According to the automatic overlaying method for the compression roller grid, two diamond pattern forming modes are adopted: forming semi-rhombus saw teeth and cross forming twill; setting the circumferential central diagonal length of the rhombic grid as A and the axial central diagonal length of the rhombic grid X as B;
the semi-rhombus sawtooth is formed by the following steps: the press roll rotates at a peripheral speed of AxVWelding of/(A2+B2)1/2The welding gun reciprocates along the X axis at a speed of B X VWelding of/(A2+B2)1/2The reciprocating distance is B/2, the rotating speed of the numerical control center chuck is synchronously controlled in the time period that the reciprocating motion speed of the welding gun is changed from V to 0 and then from 0 to V, the rotating speed of the compression roller is synchronously changed from omega to 0 and then from 0 to omega, the wire feeding speed of the filler wire is changed while the welding speed is changed, so that the surfacing height is controlled, and a first circumferential sawtooth pattern with the same height is formed on the surface of the compression roller in a surfacing mode; transversely moving a welding gun B/2 and adding one half of the width of a welding seam, simultaneously rotating a press roller to circumferentially move A/2 and adding one half of the width of the welding seam, performing second circumferential sawtooth pattern surfacing, forming diamond patterns by the two sawtooth patterns, and sequentially performing all diamond pattern surfacing;
the twillThe cross molding is as follows: the press roll rotates at a peripheral speed of AxVWelding of/(A2+B2)1/2The welding gun reciprocates along the X axis at a speed of B X VWelding of/(A2+B2)1/2The reciprocating distance is the length of a compression roller and the width of a welding seam, the rotating speed of a numerical control center chuck is synchronously controlled in the time period that the reciprocating speed of a welding gun is changed from V to 0 and then from 0 to V, the rotating speed of the compression roller is synchronously changed from omega to 0 and then from 0 to omega, the wire feeding speed of a filler wire is required to be changed at the welding speed change and the overlaying position of the overlaying welding seam so as to control the overlaying height, and a first circumferential sawtooth pattern with the same height and the same axial length is overlaid on the surface of the compression roller; and (3) rotating the press roller to move A/2 in the circumferential direction and add half of the width of the weld joint, performing second circumferential sawtooth pattern surfacing, and sequentially performing all diamond pattern surfacing.
And (3) bead surfacing: after the diameter of the compression roller, the length of the compression roller, the number of circumferential points, the number of axial points, the diameter of the circular points, the height of the circular points and the arrangement mode are input, a start button is pressed, a microprocessor calculates the central position of each welding point according to input data, controls a welding gun to take the central position as the center, reduces one-half of the melting width of the radius of the circular points to be the radius, cooperates with a numerical control center chuck to build up welding on the surface of the compression roller in a circle drawing motion, arcs are closed at the center of the.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides an automatic build-up welding equipment of compression roller net, includes numerical control automatic welding machine, the numerical control central support device of the horizontal installation compression roller that is equipped with the encoder, is equipped with wire feeder and welder's numerical control motion, electric arc sensor and control box, its characterized in that be equipped with parameter input control screen on the control box, control circuit in the control box includes microprocessor, compression roller rotational speed control module, welding parameter control module, welder motion control module, encoder, electric arc sensor and parameter input control screen are connected microprocessor's input, microprocessor's output connects compression roller rotational speed control module, welding parameter control module, welder motion control module.
2. The automatic compression roller grid surfacing welding equipment according to claim 1, wherein the numerical control automatic welding machine is a single-arc double-wire open arc automatic welding machine, one welding wire and a workpiece form an arc welding loop, the other welding wire is a filler wire, and the welding parameter control module comprises arc pressure control, current control, filler wire speed control and welding gun motion control.
3. The automatic overlaying welding equipment for the compression roller grid according to claim 1, wherein the numerical control movement mechanism comprises: the device comprises an X-axis beam, stand columns and a numerical control trolley, wherein the X-axis beam is arranged above a numerical control central supporting device and is parallel to the axial line of a press roll, the stand columns are arranged at two ends of the X-axis beam, the numerical control trolley is arranged on the beam, a vertical slide rail is arranged on the trolley, a slide plate is arranged on the vertical slide rail through a servo motor and a transmission mechanism, and a welding gun and a wire feeding mechanism are arranged on the slide plate.
4. The automatic overlaying welding equipment for the compression roller grids according to claim 1, wherein the numerical control motion mechanism is a three-dimensional numerical control motion mechanism, and comprises a portal frame, an X-axis beam and a numerical control trolley, wherein the portal frame is arranged on two sides of a numerical control central supporting device and consists of a stand column and a Y-axis horizontal beam, the X-axis beam is arranged on the Y-axis horizontal beam through a motor driving mechanism, the numerical control trolley is arranged on the X-axis beam, a vertical slide rail is arranged on the trolley, a slide plate is arranged on the vertical slide rail through a servo motor and a transmission mechanism, and the welding gun and a wire feeding mechanism are arranged on.
5. The roller grid automatic surfacing welding device according to claim 3 or 4, wherein the transmission mechanism is a rack and pinion transmission mechanism or a ball screw transmission mechanism.
6. The automatic overlaying device for the compression roller grid according to claim 1, wherein said numerical control motion mechanism is a three-dimensional motion robot.
7. The automatic overlaying welding equipment for the compression roller grid according to claim 1, wherein the numerical control center supporting device is a numerical control roller frame or a numerical control center chuck, the numerical control center chuck comprises an X-axis base, a driving chuck and a driven chuck opposite to the driving chuck, and the driven chuck is arranged on the X-axis base in a sliding mode; the installed encoder is an optoelectronic incremental encoder.
8. A method for carrying out automatic overlaying of the compression roller grids by using the automatic overlaying equipment of the compression roller grids is characterized by comprising the following steps:
firstly, a press roll to be built-up welded is arranged between a driving chuck and a driven chuck of a numerical control center chuck and is clamped tightly;
secondly, inputting the diameter of a compression roller, the length of the compression roller, grid pattern selection, the diameter of an arc welding wire, the diameter of a filler wire and welding speed on a parameter input control screen of a control box; wherein the parameters input by each grid graph comprise:
(1) horizontal stripes: the number of the net wires, the width of the net wires and the pile height of the net wires are counted;
(2) axial sawtooth lines: the number of the lines, the frequency of the saw teeth, the swing amplitude, the width of the network cable and the pile height of the network cable;
(3) circumferential sawtooth lines: the number of the lines, the frequency of the saw teeth, the swing amplitude, the width of the network cable and the pile height of the network cable;
(4) herringbone lines: the number of the net wires, the spiral angle, the width of the net wires and the pile height of the net wires are equal;
(5) diamond pattern: circumferential number, axial number, mesh wire width, mesh wire stacking height and molding mode;
(6) dot: circumferential points, axial points, dot diameters, dot heights and arrangement modes;
(7) adding dots on the diamonds:
(8) short bar-shaped grain: circumferential number, axial number, short rod width, short rod height and arrangement mode;
and thirdly, adjusting the welding gun to the initial position of the surfacing, and pressing a starting switch to automatically perform the surfacing.
9. The automatic overlaying method for the compression roller grid according to claim 8, wherein the diamond pattern forming mode is semi-diamond sawtooth forming or diagonal cross forming; setting the circumferential central diagonal length of the rhombic grid as A and the axial central diagonal length of the rhombic grid X as B;
the semi-rhombus sawtooth is formed by the following steps: the press roll rotates at a peripheral speed of AxVWelding of/(A2+B2)1/2The welding gun reciprocates along the X axis at a speed of B X VWelding of/(A2+B2)1/2The reciprocating distance is B/2, the rotating speed of the numerical control center chuck is synchronously controlled in the time period that the reciprocating motion speed of the welding gun is changed from V to 0 and then from 0 to V, so that the rotating speed of the compression roller is synchronously changed from omega to 0 and then from 0 to omega, the wire feeding speed of the filler wire is reduced while the welding speed is changed, and a first circumferential sawtooth pattern with the same height is formed on the surface of the compression roller in a surfacing mode; transversely moving a welding gun B/2 and adding one half of the width of a welding seam, simultaneously rotating a press roller to circumferentially move A/2 and adding one half of the width of the welding seam, performing second circumferential sawtooth pattern surfacing, forming diamond patterns by the two sawtooth patterns, and sequentially performing all diamond pattern surfacing;
the cross forming of the twill is as follows: the press roll rotates at a peripheral speed of AxVWelding of/(A2+B2)1/2The welding gun reciprocates along the X axis at a speed of B X VWelding of/(A2+B2)1/2The reciprocating distance is the length of the compression roller and the width of the welding seam, the rotating speed of the numerical control center chuck is synchronously controlled in the time period that the reciprocating speed of the welding gun is changed from V to 0 and then from 0 to V, the rotating speed of the compression roller is synchronously changed from omega to 0 and then from 0 to omega, and the reduction is needed in the welding speed change and the overlaying position of the overlaying welding seamFilling the wire feeding speed of the welding wire, and surfacing a circumferential sawtooth pattern with a first axial length on the surface of the compression roller; and (3) rotating the press roller to move A/2+ half of the width of the weld seam in the circumferential direction, performing second circumferential sawtooth pattern surfacing, and sequentially performing all diamond pattern surfacing.
10. The method for automatically overlaying the grid of the compression roller according to claim 8, wherein after the diameter of the compression roller, the length of the compression roller, the number of circumferential points, the number of axial points, the diameter of the dots, the height of the dots and the arrangement mode are input, a start button is pressed, a microprocessor calculates the central position of each welding point according to input data, controls a welding gun to overlay all the welding points in sequence by taking the central position as the center and reducing the radius of the dots by half of the melt width as the radius and cooperating with a numerical control center chuck to overlay the surface of the compression roller in a circle drawing motion and arc closing the center of the circle.
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| CN201911263748.XA CN112935467A (en) | 2019-12-10 | 2019-12-10 | Automatic overlaying equipment and method for compression roller grids |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117583700A (en) * | 2024-01-18 | 2024-02-23 | 中建材（合肥）粉体科技装备有限公司 | Automatic welding method for roll surface patterns of roll squeezer |
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