Automatic grinding and polishing device and method for conductor surface

Abstract

The invention discloses an automatic grinding and polishing device and method for the surface of a conductor. The device comprises multiple sets of roller carriers, a positioner, a multi-axis mechanical arm, a tool library and an industrial personal computer, and the multiple sets of roller carriers jointly support rolling of a workpiece to be machined; the position changing machine is used for achieving rotary motion of the to-be-machined workpiece. A gear and rack displacement mechanism is arranged on the bottom side of the multi-axis mechanical arm, the gear and rack displacement mechanism enables the multi-axis mechanical arm to axially move back and forth corresponding to a workpiece to be machined, and an abrasive belt unit, a polishing machine and a roughness instrument are placed in the tool magazine and can be quickly disassembled and mounted to the executing end of the mechanical arm; the industrial personal computer is electrically connected with the positioner, the multi-axis mechanical arm, the gear and rack displacement mechanism, the abrasive belt unit, the polishing machine and the roughness instrument to cooperatively control operation, according to the method, the industrial personal computer is used for cooperatively controlling the multi-axis mechanical arm to conduct grinding and polishing according to a preset track, the operation consistency is high, automatic tracking can be achieved for replacing operation tools from a tool library, automatic operation is achieved, and operation is efficient.

Description

Technical Field

[0001] This invention belongs to the technical field of conductive rod processing equipment, specifically relating to an automatic grinding and polishing device and method for conductor surfaces. Background Technology

[0002] The surface quality of aluminum alloy conductive rods (especially their smoothness and defect-free nature) directly determines the product's insulation performance and long-term operational safety. Current surface treatment of conductive rods relies on a step-by-step process of rough grinding with a belt sander followed by manual pneumatic polishing. This process suffers from poor surface quality consistency, fragmented processes leading to low efficiency, and severe dust pollution in the working environment. This not only results in significant waste of human resources and quality losses due to rework and secondary processing during manufacturing, but also poses a high risk of partial discharge or even breakdown during product operation due to residual foreign objects, sharp corners, and burrs, seriously threatening product reliability and significantly increasing subsequent maintenance costs. Existing manual operation methods, relying on human experience, not only struggle to accurately control surface roughness but also involve high labor intensity and significant safety risks, failing to fundamentally guarantee the high standard of uniformity required for the conductive rod surface.

[0003] The manual step-by-step polishing process has defects such as dispersed processes, multiple material transfers, and lack of systematic quality inspection, resulting in significant fluctuations in the surface quality of the finished product and severely restricting production efficiency; the high concentration of aluminum dust generated by open operations not only pollutes the environment but also poses potential explosion and occupational health risks; the manual experience-based mode makes it difficult to accurately control polishing parameters, resulting in poor adaptability to complex curved surfaces.

[0004] Therefore, how to provide an automatic grinding and polishing device and method for conductor surfaces is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides an automatic grinding and polishing device and method for conductor surfaces, which integrates functions such as automatic grinding and online real-time monitoring. While achieving roughness uniformity, it improves production efficiency and significantly reduces the intensity of manual intervention through multi-tool collaborative processes and dust suppression systems, ultimately achieving a synergistic improvement in quality stability, production efficiency and operational safety.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic grinding and polishing device for conductor surfaces, comprising:

[0007] Multiple sets of roller frames work together to support the rotation of the workpiece.

[0008] A positioner, located at the end of the multiple sets of roller frames and used to realize the rotational movement of the workpiece to be processed;

[0009] Multi-axis mechanical arm, gear rack displacement mechanism is arranged on the bottom side of the multi-axis mechanical arm, the gear rack displacement mechanism promotes the axial reciprocating movement of the multi-axis mechanical arm corresponding to the workpiece to be machined, and the execution end of the multi-axis mechanical arm is connected with a quick-change female head.

[0010] Tool library, the tool library is arranged on one side of the gear rack displacement mechanism, the tool library is provided with a belt sander set, a polishing machine and a roughness tester, and the belt sander set, the polishing machine and the roughness tester are connected with a quick-change sub-head matched with a quick-change female head.

[0011] Industrial computer, the industrial computer is arranged on one side of the positioner, and the industrial computer is electrically connected with the positioner, the multi-axis mechanical arm, the gear rack displacement mechanism, the belt sander set, the polishing machine and the roughness tester, so as to cooperatively control the operation.

[0012] The beneficial effects of the present application are that different tools carried by the multi-axis mechanical arm complete the polishing, polishing and detection process of the workpiece to be machined, the processing quality is high, the consistency is strong, the high error caused by manual operation is avoided, and the related components are linked through the industrial computer to realize the cooperative automatic operation process.

[0013] Preferably, it further comprises a dust collector, the dust collector is arranged on one side of the tool library, and the dust collector is electrically connected with the industrial computer and used for adsorbing dust generated in the processing process of the workpiece to be machined.

[0014] Therefore, the technical effect is that the dust collector can adsorb dust and avoid environmental pollution caused by the processing process.

[0015] Preferably, it further comprises a ground rail, the ground rail is arranged in parallel on the other side of the gear rack displacement mechanism, and the plurality of roller frames and the positioner are slidably connected with the ground rail.

[0016] Therefore, the technical effect is that the plurality of roller frames can slide on the ground rail, so as to change the distance between the plurality of roller frames, and the positioner can be driven to move towards or away from the workpiece through the servo sliding mechanism, so as to facilitate the control of the workpiece rotation.

[0017] Preferably, the roller frame of each group is an adjustable roller frame, which comprises a sliding seat, an X-shaped linkage mechanism, an adjusting screw and a supporting roller, the sliding seat is slidably connected to the ground rail, the bottom end of the X-shaped linkage mechanism is slidably connected to the sliding seat, the bottom end edges of the two sides of the X-shaped linkage mechanism are both connected with a screw sleeve, the adjusting screw is provided with two thread segments with opposite rotation directions, the two thread segments of the adjusting screw are threadedly connected with the two screw sleeves respectively, the top side ends of the X-shaped linkage mechanism are both provided with a roller shaft, the supporting roller is rotatably connected to the roller shaft, and the supporting roller is used for supporting and rolling the workpiece to be processed, one side of the sliding seat is provided with a servo motor, the servo motor is electrically connected to the industrial computer, and the output shaft of the servo motor is drivingly connected to the adjusting screw through a shaft coupling.

[0018] The technical effect produced thereby is that the adjustable roller frame can have a larger range of carrying workpieces, can carry equal-diameter rod pieces, unequal-diameter rod pieces and the like, has strong versatility, the distance between the supporting rollers is stably and reliably adjusted through the X-shaped linkage mechanism, and has a larger carrying capacity.

[0019] Preferably, the slide table of the gear and rack displacement mechanism is fixedly connected to the base of the multi-axis mechanical arm, and the slide table is provided with a chip receiving hopper close to one side of the multiple roller frames.

[0020] The technical effect produced thereby is that during processing, the chip receiving hopper is close to the workpiece to be processed and the tool (cutter), so that the cutting chips can be conveniently collected.

[0021] Preferably, the tool library is provided with a belt sander set supporting frame, a polishing machine clamping frame and a roughness instrument clamping frame, the belt sander set comprises two groups of sand belt machines and mounting seats, the two groups of sand belt machines are respectively slidably arranged on the two sides of the mounting seats, the quick-change subhead is arranged on the top of the mounting seat, the belt sander set supporting frame is used for supporting the mounting seat, the top sides of the polishing machine and the roughness instrument are both connected with the quick-change subhead, and the polishing machine clamping frame and the roughness instrument clamping frame are respectively abutted against the quick-change subhead on the top side of the polishing machine and the roughness instrument.

[0022] The technical effect produced thereby is that the tool library is provided with storage frames for different tools, the belt sander set is supported on the belt sander set supporting frame, the polishing machine and the roughness instrument are respectively clamped on the corresponding frames through the quick-change subheads thereon, so that the tools are conveniently stored and the multi-axis mechanical arm can conveniently replace the tools through the quick-change subheads.

[0023] Preferably, the two outer side walls of the mounting seat are both provided with vertical rails, the bottom side of the mounting seat is provided with a lifting cylinder, the lifting rod end of the lifting cylinder is connected to the machine base of the sand belt machine, and the industrial computer is electrically connected to the lifting cylinder to control the working height of the sand belt machine.

[0024] The technical effect generated thereby is that, due to the possibility of bulge areas on the surface of the workpiece to be processed, the industrial computer preprograms the trajectory algorithm according to the workpiece shape, so that the multi-axis robot moves to the specified position, and then the lifting cylinder controls the grinding wheel belt machine to be lifted to avoid the bulge position.

[0025] Preferably, the grinding wheel belt machine is provided with a polishing wheel, a tensioning wheel and a driving around wheel rotating on the side of the machine base, respectively, the machine base is provided with a polishing wheel cylinder connected with the polishing wheel and a tensioning wheel cylinder connected with the tensioning wheel, the polishing wheel is rotatably connected with the telescopic rod end of the polishing wheel cylinder, the tensioning wheel is rotatably connected with the telescopic rod end of the tensioning wheel cylinder, the polishing wheel cylinder and the tensioning wheel cylinder are cooperatively controlled to extend or retract the telescopic rod end through a proportional pressure valve, and the proportional pressure valve is electrically connected with the industrial computer.

[0026] The technical effect generated thereby is that, polishing requires constant pressure fine work, the normal working state of the grinding wheel is realized through the cooperative linkage of the polishing wheel cylinder and the tensioning wheel cylinder, the working pressure is obtained by the pressure sensor built in the proportional pressure valve, the polishing wheel cylinder pressure change will be fed back to the proportional pressure valve to control the tensioning wheel cylinder pressure adjustment, when the polishing wheel cylinder is retracted under the set pressure, the tensioning wheel will automatically extend, so that the grinding belt is always in tension state, for the grinding of variable diameter rods, according to the pre-set working trajectory, the working position of the tool end is preliminarily adjusted, and for the fine constant pressure work of the execution end, the proportional pressure valve is required to control the cooperative linkage work of the polishing wheel cylinder and the tensioning wheel cylinder, the overall working consistency is high, the manual polishing error is avoided, and the polishing consistency of the workpiece surface is ensured.

[0027] The application further discloses a conductor surface grinding and polishing method using the grinding and polishing device.

[0028] Step one: using hoisting equipment to hoist the workpiece to be processed to a plurality of roller frames, moving the positioner and making the servo claw on the positioner rotary table clamp the workpiece to be processed;

[0029] Step two: the industrial computer starts the grinding and polishing program to control the multi-axis robot to mount the grinding belt machine group from the tool library to grind the workpiece to be processed, the positioner controls the rotary motion of the workpiece to be processed, and the gear and rack displacement mechanism drives the multi-axis robot to reciprocate along the axial direction of the workpiece to complete consistent grinding;

[0030] Step three: after the grinding process is completed, the industrial computer controls the gear and rack displacement mechanism and the multi-axis robot to return to the tool library to replace the polishing machine, and under the action of the gear and rack displacement mechanism, the multi-axis robot carries the polishing machine to reciprocate along the axial direction of the workpiece to polish;

[0031] Step four: after the polishing process is completed, the industrial computer controls the gear rack displacement mechanism and the multi-axis mechanical arm to return to the tool library to replace the roughness tester, under the action of the gear rack displacement mechanism, the multi-axis mechanical arm carries the roughness tester to select multiple points in the axial direction of the workpiece for roughness testing;

[0032] Step five: compare the roughness test results with the predetermined parameters of the industrial computer, if the roughness of the processed workpiece is unqualified, repeat steps two to four until the roughness of the processed workpiece is qualified.

[0033] The beneficial effects of the present application are: by using automatic polishing technology instead of manual work and sand belt machine operation, the labor cost and equipment wear cost are significantly reduced, and the rework loss caused by quality fluctuation of manual polishing is solved; the system is suitable for continuous processing of conductive rod pieces of different shapes and specifications, the production efficiency is improved, and the online monitoring function effectively avoids the problem of secondary polishing, realizes the reduction of waste rate, and comprehensively reduces the production and maintenance cost.

[0034] The automatic polishing technology ensures the surface quality consistency of the workpiece to be processed, the roughness online monitoring and feedback system realizes the roughness precision control, and eliminates the surface defects caused by manual operation; the technology directly improves the conductivity and mechanical stability of high-voltage switch products, reduces the contact resistance and operation failure rate, prolongs the product life, and strengthens the operation reliability of high-voltage equipment.

[0035] The device integrates automatic polishing, online monitoring and dust removal protection functions, forms a fine processing technology system for the workpiece to be processed, breaks through the dependence on personnel skills in traditional process, improves the working environment, promotes the transformation of the industry to technology-intensive, and realizes green manufacturing.

[0036] Preferably, it further comprises step six: after the roughness test of the processed workpiece is qualified, the workpiece is adjusted away by using the lifting equipment, and the device is reset.

[0037] Preferably, in step two, at least one primary polishing process and a secondary polishing process are included, and the roughness polished by the sand belt machine group in the primary polishing process and the secondary polishing process is different.

[0038] The technical effect produced thereby is: multiple polishing processes are set according to the processing needs to ensure the subsequent processing quality. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 The structure of the conductor surface automatic polishing and polishing device Figure One ;

[0040] Figure 2 The structure of the conductor surface automatic polishing and polishing device Figure Two ;

[0041] Figure 3The structure diagram of the positioner of the automatic conductor surface polishing device;

[0042] Figure 4 The structure diagram of the roller frame of the automatic conductor surface polishing device;

[0043] Figure 5 The schematic diagram of the roller frame cooperating with the ground rail of the automatic conductor surface polishing device;

[0044] Figure 6 The schematic diagram of the multi-axis mechanical arm of the automatic conductor surface polishing device;

[0045] Figure 7 The schematic diagram of the multi-axis mechanical arm cooperating with the abrasive belt unit of the automatic conductor surface polishing device;

[0046] Figure 8 The structure diagram of the tool library of the automatic conductor surface polishing device;

[0047] Figure 9 The structure diagram of the abrasive belt unit of the automatic conductor surface polishing device;

[0048] Figure 10 The structure diagram of the polishing machine of the automatic conductor surface polishing device;

[0049] Figure 11 The structure diagram of the roughness tester of the automatic conductor surface polishing device.

[0050] 1 multiple roller frames, 101 sliding seat, 102 X-shaped link mechanism, 103 adjusting screw, 104 supporting roller, 105 screw sleeve, 2 workpiece to be processed, 3 positioner, 4 multi-axis mechanical arm, 5 gear and rack displacement mechanism, 6 quick-change female head, 7 tool library, 8 abrasive belt unit, 81 abrasive belt machine, 811 polishing wheel, 812 tensioning wheel, 813 driving winding wheel, 82 mounting seat, 83 vertical rail, 84 lifting cylinder, 9 polishing machine, 10 roughness tester, 11 quick-change male head, 12 industrial computer, 13 dust collector, 14 ground rail, 15 servo motor, 16 scrap receiving hopper, 17 fence. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0052] Refer to the drawings of the present application Figures 1 to 11The conductor surface automatic polishing device comprises:

[0053] A plurality of roller frame groups 1 are arranged in rows and are used to support the rolling of the workpiece 2 to be processed;

[0054] A positioner 3 is arranged at the end of the plurality of roller frame groups 1 and is used to realize the rotation of the workpiece 2 to be processed. A servo three-jaw chuck is arranged on the positioner.

[0055] A multi-axis mechanical arm 4 is used in particular as a six-axis freedom mechanical arm. A gear and rack displacement mechanism 5 is arranged at the bottom side of the multi-axis mechanical arm 4. The gear and rack displacement mechanism 5 is used to realize the axial reciprocating movement of the multi-axis mechanical arm 4 corresponding to the workpiece. A quick-change female head 6 is connected to the execution end of the multi-axis mechanical arm 4.

[0056] A tool library 7 is arranged on one side of the gear and rack displacement mechanism 5. A sand belt machine group 8 (at least one), a polishing machine 9 and a roughness instrument 10 are arranged in the tool library 7. The sand belt machine group 8, the polishing machine 9 and the roughness instrument 10 are all connected with a quick-change subhead 11 of the quick-change female head 6. The configuration of the quick-change subhead and the quick-change female head facilitates the multi-axis mechanical arm to change the related tools.

[0057] An industrial computer 12 is arranged on one side of the positioner 3. The industrial computer 12 is electrically connected with the positioner 12, the multi-axis mechanical arm 4, the gear and rack displacement mechanism 5, the sand belt machine group 8, the polishing machine 9 and the roughness instrument 10, so as to realize the cooperative control of the operation.

[0058] In some other embodiments, a dust collector 13 is arranged on one side of the tool library 7. The dust collector 13 is electrically connected with the industrial computer 12 and is used to adsorb the dust generated in the processing of the workpiece, so as to avoid the pollution of the environment in the processing.

[0059] In some other specific embodiments, a ground rail 14 is arranged on the other side of the gear and rack displacement mechanism 5. The plurality of roller frame groups 1 and the positioner 3 are all slidably connected with the ground rail 14. A servo sliding mechanism is arranged at the bottom side of the positioner 3 and is used to drive the positioner to move on the rail. The servo sliding mechanism can be a screw sliding mechanism. The servo sliding mechanism is electrically connected with the industrial computer 12 and is used to control the approach or the departure of the workpiece.

[0060] In other embodiments, each group of the roller frame is an adjustable roller frame, the roller frame comprises a sliding seat 101, an X-shaped linkage mechanism 102, an adjusting screw 103 and a supporting roller 104, the sliding seat 101 is slidingly connected to the rail 14, the bottom end of the X-shaped linkage mechanism 102 is slidingly connected to the sliding seat 101, the two bottom end edges of the X-shaped linkage mechanism 102 are both connected with a screw sleeve 105, the adjusting screw 103 is provided with two thread segments with opposite rotation directions, the two thread segments of the adjusting screw 103 are respectively threadedly connected with the two screw sleeves, the two top side ends of the X-shaped linkage mechanism 102 are both provided with a roller shaft, the supporting roller 104 is rotationally connected to the roller shaft, the supporting roller 104 is used for supporting the rolling workpiece 2, one side of the sliding seat 101 is provided with a servo motor 15, the servo motor 15 is electrically connected to the industrial computer 12 and the output shaft of the servo motor is drivingly connected to the adjusting screw 103 through a shaft coupling, the opening of the two top ends of the X-shaped linkage mechanism 102 can be changed, and different types of workpieces can be supported and rolled, which are not limited to equal-diameter rod pieces but also variable-diameter rod pieces.

[0061] In other specific embodiments, the sliding table of the gear and rack displacement mechanism 5 is fixedly connected to the base of the multi-axis mechanical arm 4, and the side close to the multiple groups of roller frames 1 of the sliding table is provided with a chip collecting bucket 16, so as to facilitate the collection of the grinding debris generated by the grinding tool.

[0062] Specifically, the tool library 7 is provided with a sand belt machine group supporting frame, a polishing machine clamping frame and a roughness instrument clamping frame, the sand belt machine group 8 comprises two groups of sand belt grinding machines 81 and a mounting seat 82, the two groups of sand belt grinding machines 81 are respectively slidingly arranged on the two sides of the mounting seat 82, the grinding efficiency is improved, and conditions are provided for subsequent floating constant pressure operation, the quick-change subhead 11 is arranged on the top of the mounting seat 82, the sand belt machine group supporting frame is used for supporting the mounting seat 82, the top side of the polishing machine 9 and the roughness instrument 10 is connected with the quick-change subhead 11, and the polishing machine clamping frame and the roughness instrument clamping frame are respectively supported against the quick-change subhead on the top side of the polishing machine 9 and the roughness instrument 10.

[0063] Specifically, the polishing machines are arranged in groups, two polishing machines are connected through a connecting seat, and the quick-change subhead is fixed to the top side of the connecting seat. For details, refer to the specific structure of the polishing machine in the accompanying drawings. Figure 10 .

[0064] During grinding, the workpiece shape planning operation path programming algorithm is performed in advance to ensure the rough and precise machining path, the specific operation end needs to rely on the constant pressure operation of the sand belt grinding machine to achieve fine machining, the programming algorithm cannot be fine to the small outer diameter error, that is, the constant pressure operation of the sand belt grinding machine makes up for this defect.

[0065] In some embodiments, the two outer walls of the mounting seat 82 are provided with the vertical rails 83, the bottom side of the mounting seat 82 is provided with the lifting cylinder 84, the end of the lifting rod of the lifting cylinder 84 is connected with the machine base of the abrasive belt machine 81, and the industrial computer 12 is electrically connected with the lifting cylinder 84 to control the working height of the abrasive belt machine, so that the bulge area on the conductive rod can be avoided (the path is programmed in advance, and the lifting cylinder is started at the position of the bulge area).

[0066] The abrasive belt machine is a vertical triangular abrasive belt machine, the abrasive belt machine 81 is respectively provided with a polishing wheel 811 (at the bottom side), a tensioning wheel 812 (at one side) and a driving winding direction wheel 813 (at the other side) corresponding to the circumferential side of the machine base, the machine base is provided with a polishing wheel cylinder connected with the polishing wheel 811 and a tensioning wheel cylinder connected with the tensioning wheel 812, the polishing wheel is rotatably connected with the end of the telescopic rod of the polishing wheel cylinder, the tensioning wheel 812 is rotatably connected with the end of the telescopic rod of the tensioning wheel cylinder, and the polishing wheel cylinder and the tensioning wheel cylinder cooperatively control the telescopic state of the end of the telescopic rod through a proportional pressure valve, and the proportional pressure valve is electrically connected with the industrial computer.

[0067] The application further discloses a conductor surface grinding and polishing method using the grinding and polishing device.

[0068] Step one: using hoisting equipment to hoist the workpiece to be processed to a plurality of roller frames, moving the positioner and making the servo claw on the positioner rotary table clamp the workpiece to be processed;

[0069] Step two: the industrial computer starts the grinding and polishing program, controls the multi-axis mechanical arm to mount the abrasive belt machine group from the tool library to grind the workpiece to be processed, the positioner controls the rotary motion of the workpiece to be processed, and the gear and rack displacement mechanism drives the multi-axis mechanical arm to reciprocate along the axial direction of the workpiece to be processed, so that consistent grinding is completed;

[0070] Step three: after the grinding process is completed, the industrial computer controls the gear and rack displacement mechanism and the multi-axis mechanical arm to return to the tool library to replace the polishing machine, and under the action of the gear and rack displacement mechanism, the multi-axis mechanical arm carries the polishing machine to reciprocate along the axial direction of the workpiece to polish;

[0071] Step four: after the polishing process is completed, the industrial computer controls the gear and rack displacement mechanism and the multi-axis mechanical arm to return to the tool library to replace the roughness tester, and under the action of the gear and rack displacement mechanism, the multi-axis mechanical arm carries the roughness tester to select a plurality of point positions in the axial direction of the workpiece to perform roughness testing; specifically, the mechanical arm carries the roughness tester to stably place at a point position and then perform testing, after the testing of one point position is completed, the mechanical arm carries the roughness tester to move to the next point position, and then stably place and perform the next testing;

[0072] Step five: comparing the roughness test result with the predetermined parameters of the industrial computer, if the roughness of the workpiece to be processed is unqualified, steps two to four are repeatedly performed until the roughness of the workpiece to be processed is qualified.

[0073] Also includes step six, after the roughness test of the workpiece is qualified, the workpiece is adjusted away by the lifting equipment, and the device is reset.

[0074] In specific implementation, in step two, at least one primary polishing process and one secondary polishing process are included, the primary polishing process and the secondary polishing process use different roughness of the sand belt machine group polishing, the primary polishing process can use a coarse grinding machine, and the secondary polishing process can use a fine grinding machine.

[0075] The setting of the polishing process fence 14 ensures the isolation of the robot working area and the operator working area.

[0076] The polishing process absorbs the fine dust through the dust collector 13 and collects the large particle dust generated in the polishing process through the scrap collecting hopper.

[0077] The device can realize automatic polishing, polishing and detection of aluminum alloy conductors.

[0078] For the curved surface finishing requirement of the variable diameter conductive rod, a multi-axis mechanical arm carries a high-precision polishing unit. By replacing the traditional fixed polishing machine with a mechanical arm dynamic control system, using its six-degree-of-freedom space trajectory planning capability, it can adapt to the geometric characteristics of the continuously changing diameter of the conductive rod in real time, and through the pressure sensor and lifting cylinder, the polishing tool maintains constant pressure in the curved surface transition area, completes the polishing of the curved surface area, and realizes the process goal of surface roughness ≤Ra 1.6 μm and no texture damage.

[0079] The multi-axis mechanical arm can carry a roughness tester to test the surface roughness of the workpiece, the test end is stable, and the test error caused by the external holding environment is avoided. Through the same motion trajectory programming, in-situ detection is realized after polishing. If there is an unqualified roughness area, the mechanical arm automatically replaces the polishing tool to complete the secondary polishing until the roughness is qualified, eliminating the secondary clamping error of the workpiece and establishing a "processing-detection" closed-loop quality assurance system.

[0080] A multivariate process database of conductive rod diameter-polishing speed-feeding speed-polishing pressure is constructed to overcome surface quality defects caused by multi-parameter mismatch. Based on the orthogonal test method, the optimal parameter combination of different diameter conductive rods is collected, and a diameter adaptive matching algorithm is developed: the system automatically calls the database parameters after real-time identification of the workpiece diameter, synchronously controls the polishing unit speed and the mechanical arm progressive rate, eliminates the speed overload burn and feeding mismatch grinding defects from the root cause, and constructs a process knowledge base to provide data support for industrialization promotion.

[0081] For the device and use method disclosed in the embodiments, since they correspond to the method disclosed in the embodiments, the description is relatively simple, and the relevant part is described in the method part.

[0082] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and, while certain modifications are discussed, it is desired to be protected in accordance with the spirit and scope of the application. Therefore, the application is not limited to the specific embodiments shown and described, but only by the scope of the appended claims, unless otherwise specified.

Claims

1. An automatic grinding and polishing device for conductor surfaces, characterized in that, include: Multiple sets of roller frames (1) together support the rolling of the workpiece (2) to be processed; A positioner (3) is located at the end of the multiple sets of roller frames (1) and is used to realize the rotational movement of the workpiece (2) to be processed; A multi-axis robotic arm (4) is provided with a gear and rack displacement mechanism (5) on its bottom side. The gear and rack displacement mechanism (5) causes the multi-axis robotic arm (4) to move back and forth axially in relation to the workpiece to be processed. The execution end of the multi-axis robotic arm (4) is connected to a quick-change female head (6). Tool library (7), the tool library (7) is arranged on the side close to the gear rack displacement mechanism (5), the tool library (7) contains a belt sander (8), a polisher (9) and a roughness tester (10), the belt sander (8), the polisher (9) and the roughness tester (10) are all connected to a quick-change female head (11) of a matching quick-change female head (6); An industrial control computer (12) is located on one side of the positioner (3). The industrial control computer (12) is electrically connected to the positioner (3), the multi-axis robotic arm (4), the gear and rack displacement mechanism (5), the belt sander (8), the polishing machine (9), and the roughness tester (10) to coordinate and control the operation.

2. The automatic grinding and polishing device for conductor surfaces according to claim 1, characterized in that, It also includes a dust collector (13), which is arranged near the tool magazine (7) and is electrically connected to the industrial computer (12) and used to adsorb dust generated during the processing of the workpiece.

3. The automatic grinding and polishing device for conductor surfaces according to claim 1, characterized in that, It also includes a ground rail (14), which is arranged in parallel on the other side of the gear and rack displacement mechanism (5). The multiple sets of roller frames (1) and the positioner (3) are slidably connected to the ground rail (14). The bottom side of the positioner (3) is provided with a servo sliding mechanism that can drive the positioner to move on the rail. The servo sliding mechanism is electrically connected to the industrial control computer (12).

4. The automatic grinding and polishing device for conductor surfaces according to claim 3, characterized in that, Each set of roller frames is an adjustable roller frame, which includes a sliding seat (101), an X-shaped linkage mechanism (102), an adjusting screw (103), and a support roller (104). The sliding seat (101) is slidably connected to the ground rail (14). The bottom end of the X-shaped linkage mechanism (102) is slidably connected to the sliding seat (101). Both bottom edges of the X-shaped linkage mechanism (102) are connected to threaded sleeves (105). The adjusting screw (103) has two threaded sections with opposite directions of rotation. The two threaded sections of the adjusting screw (103) are respectively threaded to two threaded sleeves. Roller shafts are provided at both ends of the top side of the X-shaped linkage mechanism (102). The support roller (104) is rotatably connected to the roller shaft. The support roller (104) is used to support the rolling of the workpiece (2). A servo motor (15) is provided on one side of the sliding seat (101). The servo motor (15) is electrically connected to the industrial control computer (12), and the output shaft of the servo motor is connected to the adjusting screw (103) through a coupling.

5. The automatic grinding and polishing device for conductor surfaces according to claim 1, characterized in that, The slide of the gear and rack displacement mechanism (5) is fixedly connected to the base of the multi-axis robotic arm (4), and a chip hopper (16) is provided on the side of the slide near the multi-roller frame (1).

6. The automatic grinding and polishing device for conductor surfaces according to claim 1, characterized in that, The tool library (7) is equipped with a belt abrasive unit support frame, a polishing machine positioning frame and a roughness tester positioning frame. The belt abrasive unit (8) includes two sets of abrasive wheel belts (81) and a mounting base (82). The two sets of abrasive wheel belts (81) slide up and down on both sides of the mounting base (82). The quick-change head (11) is located on the top of the mounting base (82). The belt abrasive unit support frame is used to support the mounting base (82). The top sides of the polishing machine (9) and the roughness tester (10) are connected to the quick-change head (11). The polishing machine positioning frame and the roughness tester positioning frame respectively support the quick-change head on the top side of the polishing machine (9) and the roughness tester (10).

7. The automatic grinding and polishing device for conductor surfaces according to claim 6, characterized in that, The mounting base (82) is provided with vertical rails (83) on both outer side walls. The mounting base (82) is provided with a lifting cylinder (84) on the bottom side. The lifting rod end of the lifting cylinder (84) is connected to the base of the grinding wheel belt machine (81). The industrial control computer (12) is connected to the lifting cylinder (84) by electrical signal to control the working height of the grinding wheel belt machine.

8. The automatic grinding and polishing device for conductor surfaces according to claim 6, characterized in that, The grinding wheel belt machine (81) is equipped with a polishing wheel (811), a tensioning wheel (812), and a drive steering wheel (813) rotatably mounted on the periphery of the machine base. The machine base is equipped with a polishing wheel cylinder connected to the polishing wheel (811) and a tensioning wheel cylinder connected to the tensioning wheel (812). The polishing wheel (811) is rotatably connected to the telescopic rod end of the polishing wheel cylinder, and the tensioning wheel (812) is rotatably connected to the telescopic rod end of the tensioning wheel cylinder. The polishing wheel cylinder and the tensioning wheel cylinder are controlled by a proportional pressure valve to control the extension and retraction state of the telescopic rod end. The proportional pressure valve is electrically connected to the industrial control computer (12).

9. A method for polishing a conductor surface, using the polishing apparatus as described in any one of claims 1-8, characterized in that, Includes the following steps: Step 1: Use lifting equipment to lift the workpiece to be processed onto multiple sets of roller frames, move the positioner and make the servo jaws on the positioner's rotary table clamp the workpiece; Step 2: The industrial control computer starts the grinding and polishing program, controls the multi-axis robotic arm to load the sander belt unit from the tool library to grind the workpiece, the positioner controls the rotation of the workpiece, and at the same time the gear and rack displacement mechanism drives the multi-axis robotic arm to reciprocate along the axis of the workpiece to complete the uniform grinding. Step 3: After the grinding process is completed, the industrial control computer controls the gear and rack displacement mechanism and the multi-axis robotic arm to return to the tool library to replace the polishing machine. Under the action of the gear and rack displacement mechanism, the multi-axis robotic arm carries the polishing machine and moves back and forth along the axis of the workpiece to be processed for polishing. Step 4: After the polishing process is completed, the industrial control computer controls the gear and rack displacement mechanism and the multi-axis robotic arm to return to the tool library to replace the roughness tester. Under the action of the gear and rack displacement mechanism, the multi-axis robotic arm carries the roughness tester to select multiple points on the axial direction of the workpiece for roughness testing. Step 5: Compare the roughness test results with the predetermined parameters of the industrial control computer. If the roughness of the machined part is not up to standard, repeat steps 2 to 4 until the roughness of the machined part is up to standard.

10. A method for polishing a conductor surface according to claim 9, characterized in that, The process also includes step six, in which, after the roughness test of the workpiece is qualified, the workpiece is moved away using a lifting device and the device is reset. Step two includes at least a primary grinding process and a secondary grinding process, and the roughness of the primary grinding process and the secondary grinding process are different using a belt abrasive unit.

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