CN102719780B - Engineering machinery hydraulic cylinder piston rod thermal spraying remanufacturing facility and automatic repairing control system - Google Patents
Engineering machinery hydraulic cylinder piston rod thermal spraying remanufacturing facility and automatic repairing control system Download PDFInfo
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- CN102719780B CN102719780B CN201210213389.9A CN201210213389A CN102719780B CN 102719780 B CN102719780 B CN 102719780B CN 201210213389 A CN201210213389 A CN 201210213389A CN 102719780 B CN102719780 B CN 102719780B
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Abstract
The invention relates to an engineering machinery hydraulic cylinder piston rod thermal spraying remanufacturing facility and an automatic repairing control system. The engineering machinery hydraulic cylinder piston rod thermal spraying remanufacturing facility comprises three parts, i.e. an operating platform, an image input system and the control system. The operating platform mainly comprises a rotary operating platform, a horizontal operating platform, a spray gun-fixing platform, a dust isolator, a supporting ring, a retainer ring and step motors. The control system mainly adopts a singlechip to control the motion of the step motors. Areas to be repaired are chosen by means of image input software. According to the area chosen by a user, the program automatically generates a repairing motion path, and sends data to the singlechip. The singlechip then controls the step motors to drive a workpiece to move according to the path sent by the software. Because of the shielding function of the retainer ring, sand blasting and spray coating only can be carried out on the workpiece via a small hole at the middle, while the position of the small hole relative to the workpiece is accurately controlled by the image input system and the singlechip control system, and therefore the local area of the outer curved surface of the workpiece can be accurately spray-coated.
Description
Technical field
The invention provides a kind of engineering machinery hydraulic cylinder piston rod thermospray manufacturing equipment and automatically repair Controlling System again, be applicable to the reparation of manufacture again of the positive camber regional area of hydraulic cylinder piston rod and similar workpiece thereof.
Background technology
Since the eighties in 20th century, along with the worsening shortages of natural resources and the raising of people's Environmental awareness, define one in the world to make full use of resource, to reduce emerging research field---the Rebuilding engineering that environmental pollution is target.Rebuilding engineering be one with product life cycels design and management be instruct, with high-quality, efficient, energy-conservation, material-saving, environmental protection for target, produce as means with modern technique and industrialization, repair transformation a series of technical measures of waste product or the general name of engineering activity.
Engineering machinery is because operating mode is severe, load large, and its component are easy to be damaged, thus cause complete machine normally not work.For traditional flight-line maintenance, mainly substitute old of damage with new component, and old that damages generally as scrapping process, can only be caused the significant wastage of resource.Engineering machinery manufactures again, utilizes existing advanced recovery technique, reparation transformation is carried out to the Engineering Machinery Components damaged, makes the performance recovery of old product even exceed the performance of new product, thus decrease the waste of resource, the consumption of the energy, and then decrease the pollution to environment.
Hydraulic efficiency system is an important integral part in modern project machinery, and the piston rod of hydro-cylinder to be it transmit a major parts of power.When there being foreign matter (as sand) to enter in the gap of cylinder and cylinder bar, the wearing and tearing between cylinder and cylinder bar will be accelerated, thus reduce hydraulic efficiency system stopping property, and then reduce the pressure of hydraulic efficiency system, complete machine can not normally be worked.For the hydraulic cylinder piston rod of wear out failure, reparation can be manufactured again by methods such as built-up welding (as manual build up welding, laser overlaying welding etc.), Brush Platings.Because hydraulic cylinder piston rod, the hardness on its surface and roughness requirements are very high.Employing overlaying method is repaired, and its follow-up tooling cost is higher; And adopt Brush Plating method, although can meet the requirement of hardness and surfaceness preferably, brush liquid is very large to the pollution of environment, does not meet the aim manufactured again.
Thermospray is a kind of surface strengthening technology, and hot-spraying techniques ripe at present mainly contains electric arc spraying, plasma spraying, supersonic spray coating etc.Selecting different hot spray powders and spraying technology, material surface can be made to reach the requirement of various hardness and intensity, is an important means of Engineering Machinery Components surface reconditioning.The damage of general hydro-cylinder is all local damage, and because the cost of thermospray is relatively high, if spray its entirety, then the expense of repairing is too high, loses the meaning manufactured again, so can only carry out spraying reparation to the local damaged.And for the spraying of curved surface, rotary table generally all can only be adopted, to reach the even application on surface, but this method can only spray the entirety of curved surface.Therefore can work out a device, make the curved surface of this kind of part of such as hydrauliccylinder piston local carry out thermospray reparation, will directly affect the practical application of hot-spraying techniques in engineering machinery.
Summary of the invention
In order to solve the difficult problem that thermospray is repaired hydraulic cylinder piston rod and the similar local surfaces with positive camber workpiece, the invention provides the device that thermospray reparation is carried out in a kind of external curve surface work pieces local, and to a certain extent can laboratory automation work.The broadened application manufacturing field again in engineering machinery for thermospray provides convenient.
Technical scheme of the present invention is as follows:
A kind of engineering machinery hydraulic cylinder piston rod thermospray reproducing method, by workpiece (8) through back-up ring (9), first upper fixing at rotary table (1), then the height of back-up ring (9) is regulated, make workpiece (8) horizontal positioned, then fix back-up ring (10), finally spray gun (6) is fixed in spray gun stationary platform (7), and regulates the height and distance of spray gun; Start spray gun and motor, carry out sandblasting and spray coating operations.
Engineering machinery hydraulic cylinder piston rod of the present invention thermospray manufacturing equipment again, comprises horizontal table (5), rotary table (1), spray gun stationary platform (7), dust-separation cover (4), back-up ring (10), supporting cup (9), horizontal operation stepper-motor (3) and rotary work stepper-motor (2); Horizontal table (5) point is made up of upper and lower two portions; Rotary table (1) is fixed on the top (5-1) of horizontal table, drives it to rotate by rotary work stepper-motor (2); Bottom (5-2) has a walking toothrow (11), and the gear on horizontal operation stepper-motor (3) drives horizontal table to move by engaging with it; The bottom of supporting cup (9) is each passed through the moving slot (5-3) on through hole (4-9) that dust-separation puts and horizontal table top, be fixed on the bottom (5-2) of horizontal table, in order to the weight of supporting workpiece, and regulate the height of workpiece one end, when making work, workpiece level is placed; The bottom (5-2) of horizontal table is fixed on by the moving slot (5-3) on the through hole (4-10) that is each passed through dust-separation and puts and horizontal table top in the bottom of back-up ring (10), a circular hole (10-1) is had in the mid-way of its length direction, leave space immediately below circular hole, and lead sand hole (10-2) by one and pass to outer retainer; Spray gun stationary platform (7) is fixed on the right on of back-up ring aperture (10-1), its height and can pass through expansion link (7-3) respectively with the distance of aperture and position movable plate (7-2) regulates; Dust-separation cover (4) is fixed on the outside of horizontal table.
The automatic reparation Controlling System of engineering machinery hydraulic cylinder piston rod of the present invention thermospray, comprises and automatically repairs control software design and single-chip computer control system, automatic reparation control software design arranges Drawing zone, drawing control region, data transmission interval three part, the diameter of circular hole (10-1) on the through-hole diameter D of drawing control region and practical application guide ring, the value of curved surface width W and curved surface length L is selected by the breakage of practical work piece respectively, when drawing control region arranges D, W, after L tri-value, (W/D+1) bar straight line will be drawn in Drawing zone W direction, (L/D+1) bar straight line is drawn in L direction, thus the individual grid of display (W/D) × (L/D), two one-dimension array X (s) and Y (s) set up by software, respectively in order to store the mobile order choosing X and the Y position of grid, after completing sequence, data in X (s) and Y (s) are sent to micro-chip, data are sent and are completed by data transmission interval, the baud rate that data transmit is consistent with micro-chip used, the com port connected arranges consistent with computer, after micro-chip receives X (s) and Y (s) data, level of control work stepper-motor (3) and rotary work stepper-motor (2) move by the position of X (s) and Y (s) respectively, thus reach the object of accurately automatically repairing.
Described software is that general programmed method can realize, and be conventional control method, we adopt the programming languages such as VB, C++ to write.
Described back-up ring, has a circular hole in the mid-way of its length direction.Particle unnecessary in sandblasting or spraying process is blocked in its effect, allows particle only pass through at opened circular hole place, thus controls the region of spraying, reach the object of local route repair.The realization of sandblasting is affected in order to prevent sand too much in sandblasting procedures to be piled up in circular hole, certain space is left immediately below circular hole, and pass to outer retainer by a hollow ring, thus make unnecessary sand be discharged to outside circular hole in time, avoid it to produce detrimentally affect to sandblasting procedures.
Described spray gun stationary platform is fixed on the side of horizontal table.Its position is fixed, with the center of the medullary ray and back-up ring circular hole that ensure spray gun stationary platform on the same axis.The height of stationary platform and the distance between spray gun and circular hole can regulate, so that spray gun faces center of circular hole when working, and make the distance that adjusts according to the actual needs between spray gun and circular hole.
Described dust-separation is placed on the outside of horizontal table, and the particle in sandblasting and spraying process is isolated in its effect, to avoid it to enter in the space of horizontal table, affects the walking of worktable.
Described stepper-motor quantity is 2, is individually fixed in the first half and the rotary table of horizontal operation, drives horizontal table and rotary table motion respectively.
The repaired item of the design, blocks effect due to back-up ring (9), makes workpiece (8) only can accept sandblasting or spraying in the region that aperture (10-1) is just right, thus controls the region of reparation, protects and does not need the workpiece surface repaired not to be damaged.The automatic reparation Controlling System of the design, simple, restoring area can be determined easily, and accurately can control needing the region of repairing, the automatization reparation of real workpiece regional area.
Accompanying drawing explanation
Fig. 1: thermospray is manufacturing equipment composition schematic diagram again;
Fig. 2: the actual damage situations of shovel loader ZL-50 hydraulic cylinder piston rod;
Fig. 3: automatically repair control software design working interface;
Fig. 4: automatically repair control software design workflow diagram;
Fig. 5: automatically repair working interface during control software design generation repair path;
Fig. 6: sandblasting operating diagram;
Fig. 7: hypersonic flame spraying operating diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Fig. 1 is the schematic diagram of each integral part of workplatform in example: supporting cup (9) is fixed on the bottom (5-2) of horizontal table with the bottom of back-up ring (10), it highly can be regulated by expansion link, so that the axle center of workpiece (8) keeps level when working.The material requirements of back-up ring (10) has higher hardness and intensity, and requires to have certain thickness, in order to avoid produce work hardening during sandblasting and make back-up ring deform, loses the effect of blocking.Can select material according to the requirement of actual sandblasting, the hardness of general requirement material is not less than HV300.In addition, the size of back-up ring (10) will match in the size of workpiece (8), and back-up ring (10) requires to be combined with workpiece as far as possible closely, but ensures that workpiece can free movement in level and sense of rotation between back-up ring again.Also according to the situation of reality, one deck macromolecular material (as tetrafluoroethylene) can be added at inner retainer, in order to increase the tightness combined between back-up ring (10) and workpiece (8), the effect of lubrication can be played again simultaneously.Have circular hole (10-1) at the center of back-up ring (10), its underpart has one and leads sand hole (10-2), so that sand therefrom can be discharged to outside, avoids blocking circular hole, affects sandblasting or spraying.Have toothrow wheel (11) in the bottom (5-2) of horizontal table, can engage with the gear on horizontal operation stepper-motor (3), and then drive horizontal table motion.Horizontal table is placed in dust-separation cover (4), to avoid the particle in work to enter horizontal table inside, affects the action precision of worktable.Rotary table (1) is fixed on the upper surface of horizontal table (5), drives it to rotate by rotary work stepper-motor (2).Spray gun stationary platform (7) is fixed on the side of horizontal table (5), its position and back-up ring center hole (10-1) are fixed in the same horizontal line, its height and distance between itself and back-up ring (10) can pass through expansion link (7-3) and position movable plate (7-2) regulates, to make sand-blasting gun or thermospray spray gun can face the center hole (10-1) of back-up ring when working.
Shown in Fig. 2 is the position photo that fallen from the sky or outer space of certain hydraulic cylinder piston rod on shovel loader ZL-50, and the square frame shown in figure is according to the determined affected area of actual damage situations, grid representative (13-1) of high order end be work origin when repairing.
Shown in Fig. 3 is the working interface automatically repairing control software design.This example adopts VB to write.Software is mainly forgiven Drawing zone, drawing control region and data and is sent control region three part composition.Drawing zone can software for display generate grid, and can by Drawing zone select grid choose need repair curved surface area.Drawing control region is mainly in order to arrange parameter when drawing and chosen area.Data send control region mainly in order to send the parameter required for data and setting data transmission.
Shown in Fig. 4 is the workflow diagram automatically repairing control software design.The work of software is mainly divided into 6 steps.First required parameter of drawing is set in drawing control region, mainly contains following three parameters: Circularhole diameter D, curved surface width W, curved surface length L.
The diameter of the circular hole on the diameter of circular hole and back-up ring.After accomplishing the setting up, click push button, the grid of one (W/D) × (L/D) will be shown at Drawing zone, the square of each grid Circularhole diameter size that to be the length of side be is arranged in grid, i.e. each grid of Drawing zone display is the circumscribed square of the back-up ring circular hole of design.After completing grid drawing, just can choose with mouse the position needing to repair.Often click mouse, will be shown by the grid spaces of clicking with another kind of color, this region, surface is selected.Repetition grid is chosen, until all regions needing to repair are all selected.After completing net region selection, click push button, the left upper end grid of selected areas can be set to the initial point of work by software automatically, and follow procedure generates the path of reparation automatically.After completing path, send control region setting data in data to arrange and connect com port, after the optimum configurations of time that baud rate, each position stop, click data sends button, and the software just automatic repair path data by generation sends to the micro-chip of Controlling System to carry out next step process.
Shown in Fig. 5 is automatically repair the restoring area of control software design selected by the actual damage situations of the piston rod in Fig. 2.
Black region in figure in Drawing zone is carried out the region of repairing through sandblasting or hot-spraying techniques by the needs selected.The work origin that in figure, the grid (13-2) of high order end sets for software default, representative be work origin (13-1) in practical work piece.After completing repair path generation, change off working state at Drawing zone and drawing control region, to avoid producing interference to the path generated before.After completing coordinates measurement, bottom-right data transmission interval becomes working order, can carry out optimum configurations and data transmission.
As mentioned above, the diameter of circular hole (10-1) on the through-hole diameter D of drawing control region and practical application guide ring, the value of curved surface width W and curved surface length L is selected by the breakage of practical work piece respectively, as shown in Figure 2.This example adopts VB to write, and the size unit of Drawing zone adopts VB default units 0-User, and Drawing zone size is 147 × 228.After drawing control region arranges D, W, L tri-values, click drawn button, (W/D+1) bar straight line will be drawn in Drawing zone W direction, (L/D+1) bar straight line is drawn in L direction, thus the individual grid of display (W/D) × (L/D), the size of each grid represents the size of actual guide ring through hole (10-1).After Drawing zone demonstrates grid, software can set up the two-dimensional array location (W/D, L/D) that a size is (L/D) × (W/D), in order to record the positional value of each grid, positional value is defaulted as 0, and when certain grid is selected, then positional value is 1.Grid as light grey in Far Left in Fig. 5 is selected, then location (1,8)=1.After certain grid is selected, also will draws the straight line of 1000 different colours on this grid, selected grid can be made like this to show with another kind of color.After all zones has selected, automatic left upper end grid the second distinct colors by selected areas has shown by software, represents the starting point of this point as work.Then sort in the grid position chosen by software, thus form repair path.For completing this operation, two one-dimension array X (s) and Y (s) set up by software, and respectively in order to store the mobile order choosing X and the Y position of grid, wherein s is the number of the grid chosen.Mobile order is set as from top to bottom, more from bottom to up, hockets so from left to right.As the region chosen in Fig. 5, after sorted: X (1)=1, X (2)=2, X (3)=2, X (4)=2 ..., corresponding Y (1)=8, Y (2)=7, Y (3)=8, Y (4)=9 ...After completing sequence, just the data in X (s) and Y (s) can be sent to micro-chip, data are sent and are completed by data transmission interval, and the baud rate that data transmit is consistent with micro-chip used, and com port and the computer of connection arrange consistent.After micro-chip receives X (s) and Y (s) data, level of control work stepper-motor (3) and rotary work stepper-motor (2) move by the position of X (s) and Y (s) respectively, thus reach the object of accurately automatically repairing.); Software can adopt the programming languages such as VB, C++ to write.After the drawing control region of software input correlation parameter, just can show a region be made up of grid at Drawing zone, by selecting grid, user can select the region needing to repair; The region that software is selected by user automatically generates repair path and by data transmission interval, path data is sent to micro-chip.This example have employed the micro-chip of 51 series, and serial communication adopts the mode looking into news to receive data.First data received are the Circularhole diameter of software set, and the second number is the number of selected fixed point, and in order to determine the size of array X and Y, the 3rd number is the residence time of each point of setting.From the 4th number, receive the position data of X, after receiving n data, after namely completing the reception of X position data, start the data receiving Y position.Micro-chip moves according to the data of the array X received and the Y repair path that level of control work stepper-motor (3) and rotary work stepper-motor (2) make the restoring area of workpiece generate by software (12) respectively, finally reaches the object of local route repair.
Shown in Fig. 6 is the schematic diagram of workpiece when sandblasting works.Workpiece (8) shown in figure is the schematic diagram of the hydraulic cylinder piston rod on shovel loader ZL-50.During work, by workpiece through supporting cup (9), first by the gripping unit on rotary table (1), fixed by workpiece, then adjust the height of supporting cup, axle center is consistent in the horizontal direction to make workpiece.Then install and adjust the height of back-up ring (10), and regulate tightness between back-up ring and workpiece, workpiece is combined with back-up ring and closely ensures that again workpiece can carry out the repair path free movement that level and sense of rotation can generate according to software (12) among back-up ring as far as possible.Finally install sand-blasting gun (6) on spray gun stationary platform (7), the height of adjustment platform, makes gun slot just to the center hole (10-1) of back-up ring, then the distance adjusted between spray gun and circular hole is to suitable position.During sandblasting, sand only has just can act on workpiece surface through circular hole, and unnecessary sand then can not damage not needing the region of sandblasting because back-up ring blocks.Because the sand sprayed during sandblasting is more simultaneously, and circular hole also footpath is less, unnecessary sand likely can be deposited in circular hole surface and make follow-up sand can not be sprayed onto surface, affect normal grit blasting operation.For this reason, the present invention devises one in the bottom of circular hole and leads sand hole, unnecessary sand can be discharged by outlet (10-3) through leading sand hole (10-2), thus ensure that normally carrying out of sandblasting.
Shown in Fig. 7 is the schematic diagram of workpiece when hypersonic flame spraying.Its mode of operation and sandblasting are substantially similar, only need sand-blasting gun to change, and change supersonic flame spraying spray gun (6).Because the operating distance of hypersonic flame spraying is general all large than the distance of sandblasting, so, before spraying, also adjust stationary platform (7), requirement when making the distance between spray gun (6) and circular hole (11) reach spraying.
As mentioned above, the present invention, employing back-up ring controls, make the positive camber of hydraulic cylinder piston rod and this type of workpiece local can carry out spraying reparation, and adopt the image Input Software independently write, artificially select needing the region of repairing, finally by micro-chip control, the region sprayed is made to obtain controlling comparatively accurately, not only solve the difficult problem that thermospray is repaired local surface, and achieve the automatization that thermospray manufactures again to a certain extent, for thermospray provides larger facility in engineering machinery and applying of association area.
By the description of the drawings and corresponding embodiment, the present invention is described.But it should be understood that wherein in instances about the realization of the concrete structure of workplatform, the specific implementation form of software and single-chip computer control system description and do not mean that and limit the invention to particular forms disclosed.Simultaneously, the thermospray that the present invention be directed to engineering machinery hydraulic cylinder piston rod manufactures again repairs and design, but it uses and is not limited only to the thermospray reparation of engineering machinery hydraulic cylinder piston rod, for the positive camber of other similar workpiece and relevant restorative procedure applicable equally.In addition, thermospray tooling platform of the present invention and automatically repair Controlling System, is not limited to both being combined, its separately can as one independently system complete relevant work.Above-mentioned example is only open in an illustrative manner, unless otherwise specified.
Claims (1)
1. an engineering machinery hydraulic cylinder piston rod thermospray manufacturing equipment again, comprises horizontal table (5), rotary table (1), spray gun stationary platform (7), dust-separation cover (4), back-up ring (10), supporting cup (9), horizontal operation stepper-motor (3) and rotary work stepper-motor (2); Horizontal table (5) is made up of upper and lower two portions; Rotary table (1) is fixed on the top (5-1) of horizontal table, drives it to rotate by rotary work stepper-motor (2); Bottom horizontal table, (5-2) has a walking toothrow (11), and the gear on horizontal operation stepper-motor (3) drives horizontal table to move by engaging with it; The bottom of supporting cup (9) is each passed through the moving slot (5-3) on through hole (4-9) that dust-separation puts and horizontal table top, be fixed on the bottom (5-2) of horizontal table, in order to the weight of supporting workpiece, and regulating the height of workpiece one end, when making work, workpiece level is placed; The described moving slot (5-3) that the bottom of back-up ring (10) is each passed through another through hole (4-10) that dust-separation puts and horizontal table top is fixed on the bottom (5-2) of horizontal table, a back-up ring aperture (10-1) is had in the mid-way of back-up ring length direction, leave space immediately below back-up ring aperture, and lead sand hole (10-2) by one and pass to outer retainer; Spray gun stationary platform (7) is fixed on the right on of back-up ring aperture (10-1), spray gun stationary platform height and regulating respectively by expansion link (7-3) and position movable plate (7-2) with the distance of back-up ring aperture; Dust-separation cover (4) is fixed on the outside of horizontal table.
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| CN201210213389.9A CN102719780B (en) | 2012-06-26 | 2012-06-26 | Engineering machinery hydraulic cylinder piston rod thermal spraying remanufacturing facility and automatic repairing control system |
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| CN201210213389.9A CN102719780B (en) | 2012-06-26 | 2012-06-26 | Engineering machinery hydraulic cylinder piston rod thermal spraying remanufacturing facility and automatic repairing control system |
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| CN102719780B true CN102719780B (en) | 2015-06-03 |
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