Bonding jig and method for neodymium-iron-boron magnet

Abstract

The present application relates to the technical field of magnetic steel processing fixture, especially relates to a neodymium iron boron magnetic steel bonding fixture and method thereof. A neodymium iron boron magnetic steel bonding fixture, comprising a processing table, the processing table is the assembly base of the present bonding fixture, a plurality of work station grooves are symmetrically and spaced apart on the two sides of the table top of the processing table, and a bolt hole is formed in the table top of each work station groove on the processing table; further comprising a clamping mechanism assembled at the work station groove of the processing table, the clamping mechanism is used for clamping a rotor workpiece to be bonded with magnetic steel, and the clamping mechanism can be flexibly installed on each work station groove of the processing table according to the use requirement. The present application is supported and clamped by the clamping roller from the inner wall of the rotor workpiece, and a stable support structure is formed in cooperation with the external placement roller, the end face and the side face of the rotor workpiece are not shielded in the clamping process, and the clamped rotor workpiece can be flexibly rotated, so that the magnetic steel on the rotor workpiece can be bonded by manual operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of magnetic steel processing fixtures, in particular to a bonding fixture for neodymium iron boron magnetic steel and a method thereof. BACKGROUND

[0002] Neodymium iron boron magnetic steel is widely used in permanent magnet motors due to its excellent magnetic properties, and is one of the key materials for forming the core components of the motor rotor. In the process of motor manufacturing, neodymium iron boron magnetic steel needs to be firmly bonded in the magnetic steel slot of the rotor core to ensure that the magnetic steel does not displace or fall off when the rotor rotates at high speed, thereby ensuring the stability and efficiency of the motor operation. At present, epoxy glue is often used as the adhesive for the bonding of magnetic steel, and the assembly is completed by hand or with the aid of a fixture. With the continuous improvement of motor performance requirements, higher requirements are put forward for the positional accuracy, angular consistency and uniformity of the adhesive layer of the magnetic steel bonding, so the development of high-precision and high-efficiency magnetic steel bonding process and supporting fixtures has become a key technical link in motor manufacturing.

[0003] The existing bonding process for neodymium iron boron magnetic steel usually relies on manual operation. The operator needs to dip the magnetic steel in epoxy glue by hand and then manually insert or attach it into the magnetic steel slot of the rotor to complete the bonding. There are some limitations in this bonding process: first, during the clamping process of the rotor, the traditional rigid fixture structure easily blocks the end face or side face of the magnetic steel, affecting the glue application and alignment operation, and it is difficult to achieve precise and comprehensive bonding; second, there is a lack of precise positioning and guiding mechanism, and the angle and position of the magnetic steel during bonding completely depend on the experience of the operator, which is prone to angle deviation, resulting in uneven distribution of the rotor magnetic field and affecting the overall performance of the motor. Therefore, it is necessary to design a bonding fixture for neodymium iron boron magnetic steel and a method thereof to improve the bonding accuracy, consistency and production efficiency in view of the shortcomings of the existing technology. SUMMARY

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the present application provides a bonding fixture for neodymium iron boron magnetic steel and a method thereof.

[0005] Technical solution: a kind of bonding jig of Nd-Fe-B magnetic steel, including processing table, the processing table is the assembly base of the present bonding jig, multiple work station grooves are symmetrically arranged in the two sides of the table top of the processing table, and bolt hole is formed in the table top of each work station groove on the processing table;It also includes clamping mechanism assembled in the work station groove of processing table, the clamping mechanism is used to clamp the rotor workpiece of the magnetic steel to be bonded, and the clamping mechanism can be flexibly installed on each work station groove of the processing table according to the need;The clamping mechanism includes mounting plate detachably mounted on the processing table by bolts, the mounting plate is square plate and four slide grooves are symmetrically formed along the diagonal line, the area between the adjacent two slide grooves of the top surface of the mounting plate is horizontally rotationally installed with placing roller, the corresponding side of the placing roller and the mounting plate is perpendicular, the slide groove of the mounting plate is rotationally installed with clamping roller through sliding block, the plate surface of the clamping roller and the mounting plate is perpendicular, the outer surface of the cylinder body of the placing roller and the clamping roller is covered with silica gel pad, the bottom surface of the mounting plate is rotationally connected with driving disc, four circular arc grooves are circumferentially spaced apart on the driving disc, the sliding block of the clamping roller is located in the corresponding circular arc groove of the driving disc after passing through the slide groove of the mounting plate, and not less than two connecting columns are circumferentially spaced apart and fixedly connected to the bottom surface of the driving disc, the bottom surface of the mounting plate is fixedly connected with the same number of fixed columns as the connecting columns, and the connecting columns and the corresponding fixed columns are provided with tension spring.

[0006] Further, the middle part of the table top of the processing table is vertically installed with a support plate, the top of the support plate is symmetrically installed with mounting frame corresponding to the work station groove on both sides, the end of the mounting frame is assembled with photoelectric positioning module, the photoelectric positioning module is located directly above the clamping mechanism assembled on the processing table, and the photoelectric positioning module is used to emit laser cross line to accurately calibrate the bonding reference surface of the rotor workpiece on the clamping mechanism.

[0007] Further, the driving disc at the bottom surface of the mounting plate is provided with a handle component, the handle component is convenient for rotating the driving disc to adjust the opening and closing state of the clamping roller, the handle component includes fixed rod fixedly connected to the bottom surface of the rotation center of the driving disc, the fixed rod is "L" type rod, and the rod end away from the driving disc is hinged with a lever through connecting shaft, the end surface of the lever away from the fixed rod is fixedly provided with guiding piece with opening, the lever is provided with through slot matched with the guiding piece, and the plug rod is slidably connected in the through slot of the lever, the operating end of the plug rod is connected with the opening of the guiding piece, and the end of the fixed rod connected with the lever is provided with plug slot matched with the plug rod.

[0008] Further, one side of the mounting plate is provided with a correction mechanism for assisting in correcting the rotor workpiece clamped on the placing roller, the correction mechanism comprises a fixed plate fixedly connected to one side of the mounting plate, a guide rod is fixedly connected to the fixed plate, a correction member is slidably connected to the fixed plate through the guide rod, the correction member is used for positioning and correcting the rotor workpiece placed on the placing roller, a first spring is arranged at the guide rod between the fixed plate and the correction member, and the first spring is used for resetting the correction member.

[0009] Further, the correction member comprises a sliding seat slidably connected to the fixed plate through the guide rod, a connecting frame is slidably connected to the sliding seat, a second spring is arranged between the sliding seat and the connecting frame, the connecting frame is flush with the sliding seat under the elastic force of the second spring, two mounting blocks are symmetrically and slidably connected to the connecting frame, a correction rod is fixedly connected to one side of the top of the mounting block and faces the mounting plate, a sharp end of the correction rod is adapted to the side boss of the rotor workpiece, the correction rod is used for contacting and positioning the rotor workpiece, so that the rotor workpiece can be accurately positioned and bonded to the reference surface on the mounting plate, a bidirectional screw rod is rotatably connected to the connecting frame, the bidirectional screw rod is in threaded connection with the mounting block, and a knob is arranged at one end of the bidirectional screw rod.

[0010] Further, a handle is fixedly arranged on one side of the connecting frame, and the handle facilitates the movement of the correction member on the fixed plate.

[0011] Further, the mounting plate is fixedly connected to a placing seat, a locking block is vertically and slidably connected to the placing seat, a lifting rod is arranged on the top of the locking block, and one side of the lower part of the locking block is inclined, and the locking block is used for blocking the locking lever.

[0012] A bonding method of a neodymium iron boron magnetic steel, and the specific steps are as follows:

[0013] S1, rotate the driving disc of the operating handle assembly to make the clamping roller shrink inward, block the lever with the locking block to keep the shrink state, then put the rotor workpiece into the clamping roller and place it on the placing roller, then lift the locking block to release the block, and the driving disc is reset and rotated under the action of the tension spring, driving the clamping roller to expand outward and roll and clamp the rotor workpiece from the inner wall;

[0014] S2, according to the size of the rotor workpiece, rotate the knob to adjust the bidirectional screw rod, so that the distance between the two correction rods is adapted to the position of the workpiece boss, push the handle to drive the correction member, and use the sharp end of the correction rod to resist the rotor workpiece side wall boss, and at the same time cooperate with the photoelectric positioning module to project the laser cross line, and further calibrate the bonding reference surface;

[0015] S3, the neodymium iron boron magnetic steel is pasted to the magnetic steel groove of the rotor workpiece and the adhesive is applied to fix, after each groove is bonded, the operation corrects the accurate rotation of the rotor workpiece to the next station, and after the rotor workpiece is bonded, the hand clamp member is operated again to shrink the clamping roller, and the rotor workpiece is taken down for subsequent curing treatment.

[0016] The present application has the following advantages:

[0017] 1, the clamping roller rolls and supports from the inner wall of the rotor workpiece, and forms a stable support structure with the external placement roller, the rotor workpiece can be flexibly rotated after clamping, and the magnetic steel on the rotor workpiece can be bonded by manual operation.

[0018] 2, the present application sets adjustable correction mechanism, the distance between the correction rods is adjusted by the bidirectional screw rod, the different size rotor workpiece is adapted, and the axial and angular accurate positioning is realized by the contact between the correction rod and the workpiece boss, the laser cross line is projected by the photoelectric positioning module, and the double positioning ensures the accurate height of the bonding reference surface.

[0019] 3, the clamping mechanism of the present application is detachably installed in the plurality of work station grooves of the machining table by bolts, supports multi-station parallel operation, improves production efficiency, and the hand member can be folded for storage, which is convenient for overall disassembly and maintenance of the jig. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application.

[0021] Figure 2 It is a position relationship diagram of the machining table, mounting plate and hand member of the present application.

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the clamping mechanism of the present application.

[0023] Figure 4 It is a connection relationship diagram of the mounting plate, driving disc, connecting column and fixing column of the present application.

[0024] Figure 5 It is a schematic diagram of the cooperation relationship of the connecting column, fixing column and tension spring of the present application.

[0025] Figure 6 It is a connection relationship diagram of the driving disc and the specific components of the hand member of the present application.

[0026] Figure 7 It is a schematic diagram of the photoelectric positioning module emitting laser to position the rotor workpiece of the present application.

[0027] Figure 8 It is a schematic diagram of the mounting plate, fixing plate, sliding seat and first spring of the present application.

[0028] Figure 9 The schematic diagram of the three-dimensional structure of the specific components of the correction member of the present application.

[0029] Figure 10 The connection relationship diagram of the sliding seat, the second spring, the connecting frame and the mounting block of the present application.

[0030] Figure 11 The schematic diagram of the cooperation relationship of the mounting plate, the placing seat, the locking block and the push rod of the present application.

[0031] Figure 12 The top view of the mounting plate, the placing roller, the correction rod and the handle and other components of the present application.

[0032] The meaning of the reference numerals in the figure: 100: rotor workpiece, 1: machining table, 101: work position slot, 2: clamping mechanism, 21: mounting plate, 211: sliding groove, 22: placing roller, 23: clamping roller, 231: sliding block, 24: driving disc, 241: circular arc groove, 25: connecting column, 26: fixing column, 27: tension spring, 3: handle component, 31: fixing rod, 32: push rod, 321: connecting shaft, 33: guide piece, 34: insertion rod, 4: support plate, 5: mounting frame, 6: photoelectric positioning module, 7: correction mechanism, 71: fixing plate, 72: guide rod, 73: first spring, 8: correction member, 81: sliding seat, 811: second spring, 82: connecting frame, 83: mounting block, 831: correction rod, 84: bidirectional screw rod, 841: knob, 9: handle, 10: placing seat, 11: locking block, 12: lifting rod. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application.

[0034] A bonding jig for a neodymium iron boron magnetic steel, such as Figures 1-5As shown, including the processing platform 1, the processing platform 1 is the assembly base of the present bonding fixture, the processing platform 1 is symmetrically arranged with a plurality of work station grooves 101 on both sides of the platform surface, and the platform surface of each work station groove 101 on the processing platform 1 is provided with a bolt hole; it also includes a clamping mechanism 2 assembled at the work station groove 101 of the processing platform 1, the clamping mechanism 2 is used for clamping the rotor workpiece 100 to be bonded with magnetic steel, and the clamping mechanism 2 can be flexibly installed on each work station groove 101 of the processing platform 1 according to the use requirement; the clamping mechanism 2 includes an installation plate 21 which is detachably installed on the processing platform 1, the installation plate 21 is a square plate and symmetrically provided with four slide grooves 211 along the diagonal, the area between the adjacent two slide grooves 211 on the top surface of the installation plate 21 is horizontally rotationally installed with a placing roller 22, the corresponding side of the placing roller 22 and the installation plate 21 is perpendicular, the slide groove 211 of the installation plate 21 is rotationally installed with a clamping roller 23 through a sliding block 231, the plate surface of the clamping roller 23 and the installation plate 21 is perpendicular, the outer surface of the cylinder body of the placing roller 22 and the clamping roller 23 is covered with a silica gel pad, the bottom surface of the installation plate 21 is rotationally connected with a driving disc 24, the driving disc 24 is circumferentially and spacedly provided with four circular arc grooves 241, the sliding block 231 of the clamping roller 23 is located in the corresponding circular arc groove 241 of the driving disc 24 after passing through the slide groove 211 of the installation plate 21, the bottom surface of the driving disc 24 is circumferentially and fixedly connected with four connecting columns 25, the bottom surface of the installation plate 21 is fixedly connected with a number of fixing columns 26 which is consistent with the number of the connecting columns 25, the connecting column 25 and the corresponding fixing column 26 are provided with a tension spring 27, under the common action of the plurality of tension springs 27, the driving disc 24 rotates and compresses the corresponding sliding block 231 through the circular arc groove 241, so that the sliding block 231 drives the clamping roller 23 to expand outward along the slide groove 211 of the installation plate 21, the clamping roller 23 can rollingly support and clamp the inner wall of the rotor workpiece 100 placed on the installation plate 21, at this time, the clamping roller 23 neither blocks the end face and the side face of the rotor workpiece 100 when clamping the rotor workpiece 100, nor allows the workpiece to freely rotate on the placing roller 22, which is convenient for manual bonding of magnetic steel in the magnetic steel groove of the rotor workpiece 100.

[0035] As shown in Figure 1 and Figure 7 , the middle part of the platform surface of the processing platform 1 is vertically installed with a support plate 4, the top of the support plate 4 is symmetrically installed with a mounting frame 5 corresponding to the work station groove 101 on both sides, the mounting frame 5 is assembled with an optical positioning module 6 at the end, the optical positioning module 6 is located directly above the clamping mechanism 2 assembled on the processing platform 1, and the optical positioning module 6 is used for emitting laser cross line to accurately calibrate the bonding reference surface of the rotor workpiece 100 on the clamping mechanism 2, so as to assist the operator to accurately bond the magnetic steel on the rotor workpiece 100.

[0036] As shown in Figure 2 and Figure 6As shown, the drive disc 24 at the bottom of the mounting plate 21 is provided with a handle member 3, which facilitates the rotation of the drive disc 24 to adjust the opening and closing state of the clamping roller 23. The handle member 3 includes a fixed rod 31 fixedly connected to the bottom surface of the rotation center of the drive disc 24. The fixed rod 31 is an "L" type rod, and the rod end away from the drive disc 24 is hingedly connected with a lever 32 through a connecting shaft 321. The lever 32 is provided with a guide piece 33 with an opening on the end surface away from the fixed rod 31. A through slot is formed in the lever 32 to match the guide piece 33. A plug rod 34 is slidably connected in the through slot of the lever 32. The operating end of the plug rod 34 is connected to the opening of the guide piece 33. The end of the fixed rod 31 connected to the lever 32 is provided with a plug slot matching the plug rod 34. The plug rod 34 in the lever 32 is inserted into the plug slot of the fixed rod 31. The fixed rod 31 and the lever 32 can form a handle for rotating the drive disc 24. When the plug rod 34 is pulled out of the plug slot of the fixed rod 31, the lever 32 can be folded on the fixed rod 31, so that the clamping mechanism 2 can be removed from the work station 101 of the processing table 1 for maintenance.

[0037] As shown in Figure 11 The mounting plate 21 is fixedly connected with a placing seat 10. The placing seat 10 is vertically slidably connected with a locking block 11. The locking block 11 is provided with a lifting rod 12 on the top. The lower part of the locking block 11 is inclined. The locking block 11 is used to block the locking lever 32. The locking block 11 is used to block the locking lever 32. At this time, the clamping roller 23 on the mounting plate 21 remains in the state of being inwardly contracted, so that the operator can put the rotor workpiece 100 into the outside of the clamping roller 23. Then, the locking block 11 is lifted upward from the placing seat 10 through the lifting rod 12, so that the locking block 11 no longer blocks the locking lever 32. The stretched tension spring 27 can drive the drive disc 24 to reset and rotate, so that the clamping roller 23 is expanded outward and clamps the rotor workpiece 100. Thus, the operation convenience of clamping the rotor workpiece 100 is improved.

[0038] Before use, a plurality of clamping mechanisms 2 can be assembled on the work station 1 as needed, and a corresponding number of photoelectric positioning modules 6 can be installed on each mounting frame 5. When clamping the rotor workpiece 100, the operator first holds the handle member 3 composed of the fixed rod 31 and the lever 32, applies a rotating force to the lever 32, and the handle member 3 drives the driving disc 24 to rotate. The rotating driving disc 24 is converted into a radial inward pressure on the four sliders 231 through the four circumferentially distributed circular arc grooves 241 thereon, and the sliders 231 drive the corresponding clamping rollers 23 to converge to the center along the sliding groove 211 of the mounting plate 21, so that the clamping diameter of the entire clamping mechanism 2 is reduced. At this time, the rotating lever 32 will squeeze the locking block 11 inclined surface, so that the locking block 11 is lifted on the placing seat 10, and when the lever 32 passes the locking block 11, the locking block 11 is reset and falls under the action of gravity, so that the lever 32 is blocked and locked by the locking block 11. At this time, the clamping mechanism 2 stably maintains in the contracted state, and then the operator can easily place the rotor workpiece 100 to be machined from top to bottom outside the converged clamping roller 23. At this time, the rotor workpiece 100 is jointly carried by a plurality of placing rollers 22 with silica gel pads on the surface. After the rotor workpiece 100 is placed, the operator only needs to lift the locking block 11 upward through the lifting rod 12 to remove the blocking and limiting of the locking block 11 to the lever 32, so that the plurality of tension springs 27 in the stretched state instantaneously release the stored elastic potential energy, thereby automatically resetting the driving disc 24 in the opposite direction. The rotation of the driving disc 24 again transmits the force to the four sliders 231 through the circular arc grooves 241, and the sliders 231 drive the clamping rollers 23 to expand synchronously to the four directions along the sliding groove 211, until the silica gel pads on the outer circles of all the clamping rollers 23 are tightly attached and supported on the inner wall of the rotor workpiece 100. Through the clamping mode from inside to outside, it can ensure that the rotor workpiece 100 is firmly, concentrically and non-damagingly fixed. At the same time, since the clamping force is applied through the rollable roller, the workpiece is not locked in the circumferential direction and retains the ability to rotate freely on the placing roller 22, which is convenient for subsequent circumferential bonding of the rotor workpiece 100.

[0039] As shown in Figure 1 and Figure 8 , one side of the mounting plate 21 is provided with a correcting mechanism 7 for assisting in correcting the rotor workpiece 100 clamped on the placing roller 22. The correcting mechanism 7 includes a fixed plate 71 fixedly connected to one side of the mounting plate 21, a guide rod 72 fixedly connected to the fixed plate 71, and a correcting member 8 slidably installed on the fixed plate 71 through the guide rod 72. The correcting member 8 is used to position and correct the rotor workpiece 100 placed on the placing roller 22. A first spring 73 is arranged between the fixed plate 71 and the correcting member 8, and the first spring 73 is used to reset the use of the correcting member 8.

[0040] As shown in Figures 8-10As shown, the correction piece 8 comprises a sliding seat 81 connected to the fixed plate 71 through a guide rod 72, a connecting frame 82 connected to the sliding seat 81, a second spring 811 arranged between the sliding seat 81 and the connecting frame 82, the connecting frame 82 sliding flush with the sliding seat 81 under the elastic force of the second spring 811, two mounting blocks 83 connected to the connecting frame 82, a correction rod 831 fixedly connected to the top of the mounting block 83 and adapted to the protrusion of the rotor workpiece 100, the correction rod 831 being used for contacting and positioning the rotor workpiece 100, and the rotor workpiece 100 being accurately positioned on the mounting plate 21, a bidirectional screw rod 84 rotatably connected to the connecting frame 82, the bidirectional screw rod 84 being in threaded connection with the mounting block 83, and a knob 841 connected to one end of the bidirectional screw rod 84.

[0041] As shown in Figure 9 , Figure 10 and Figure 12 , a handle 9 is fixedly connected to one side of the connecting frame 82, the handle 9 being used for pushing the correction piece 8 on the fixed plate 71, and the knob 841 being twisted according to the correction size of the rotor workpiece 100, the bidirectional screw rod 84 being adjusted to the appropriate correction position of the correction rod 831 on the mounting block 83, the handle 9 being held and the correction piece 8 being pushed, the correction piece 8 being moved to the rotor workpiece 100 against the elastic force of the first spring 73, the protrusion of the rotor workpiece 100 being contacted by the tip of the correction rod 831, and the rotor workpiece 100 being accurately positioned by the correction rod 831, the handle 9 being pushed forward against the elastic force of the second spring 811 until the correction rod 831 is separated from the protrusion of the rotor workpiece 100, and the correction rod 831 being accurately pushed to rotate the rotor workpiece 100 by a certain angle.

[0042] After the rotor workpiece 100 is firmly clamped by the clamping mechanism 2, the operator can rotate the knob 841 on the connecting frame 82 of the correction mechanism 7 according to the diameter size of the boss on the side wall of the current rotor workpiece 100, drive the bidirectional screw rod 84 to rotate through the knob 841, and drive the two screw-mounted mounting blocks 83 to move towards or away from each other in the connecting frame 82, so as to accurately adjust the transverse distance between the tips of the two correction rods 831, so that the correction rods 831 match the size of the boss of the rotor workpiece 100. Then, the operator holds the handle 9 on the connecting frame 82 and overcomes the elastic force of the first spring 73 to push the entire correction mechanism 7 along the guide rod 72 to the rotor workpiece 100. The specific shaped tip at the front end of the correction rod 831 can accurately find and abut against the boss on the side wall of the rotor workpiece 100, and quickly preliminarily limit the circumferential angle of the rotor to a standard position by using the protruding features of the boss on the rotor workpiece 100, thereby completing the preliminary positioning of the rotor workpiece 100. Then, the photoelectric positioning module 6 located above the work station is started to project a clear laser cross line downward. The light beam accurately hits a specific reference line on the top end face of the rotor workpiece 100, providing an accurate visual reference for the operator to accurately position the bonding station and effectively eliminate human visual judgment errors. The operator can then apply adhesive and accurately bond the Nd-Fe-B magnetic steel under the reference of the laser cross line. After completing the bonding of each magnetic steel slot on the rotor workpiece 100, the operator does not need to directly touch the workpiece, but only needs to push the handle 9 forward again. The tip of the correction rod 831 in the correction mechanism 8 can push the boss of the rotor workpiece 100 to rotate the rotor workpiece 100 clamped by the clamped roller 23 by a predetermined angle, thereby rotating and switching the magnetic steel slot on the rotor workpiece 100. After the rotation and switching of the rotor workpiece 100 on the placement roller 22 is completed, the handle 9 is pushed to the right to make the correction rod 831 disengage from the boss of the rotor workpiece 100. Finally, the handle 9 is released, and the correction mechanism 8 is reset under the action of the first spring 73 and the second spring 811, so as to be used again for positioning and correction of the rotor workpiece 100. This cycle is repeated until all the magnetic steels are bonded, ensuring the consistency of product quality and production efficiency.

[0043] A bonding method of Nd-Fe-B magnetic steel, the specific steps are as follows:

[0044] S1, rotate the drive plate 24 of the operating handle assembly 3 to make the clamped roller 23 shrink inward, and limit the push rod 32 by the locking block 11 to maintain the shrinkage state, then put the rotor workpiece 100 into the clamped roller 23 and place it on the placement roller 22, then lift the locking block 11 to release the limit, and reset the drive plate 24 to rotate under the action of the tension spring 27, drive the clamped roller 23 to expand outward and roll to clamp the rotor workpiece 100 from the inner wall;

[0045] S2, according to the size of the rotor workpiece 100, rotate the knob 841 to adjust the two-way screw rod 84, make the distance between the two correction rods 831 adapt to the boss position of the workpiece, push the handle 9 to drive the correction member 8, use the tip of the correction rod 831 to resist the boss of the side wall of the rotor workpiece 100, and cooperate with the laser cross line projected by the photoelectric positioning module 6 to further calibrate the bonding reference surface;

[0046] S3, paste the neodymium iron boron magnetic steel to the magnetic steel groove of the rotor workpiece 100 and apply adhesive to fix it, after completing the bonding of each groove, operate the correction member 8 to accurately rotate the rotor workpiece 100 to the next station, and then operate the handle member 3 to shrink the clamping roller 23 to take down the rotor workpiece 100 for subsequent curing treatment.

Claims

1. A bonding fixture for neodymium iron boron magnets, comprising a processing table (1), wherein the processing table (1) is provided with a plurality of work station slots (101) with bolt holes at intervals. Its characteristics are, It also includes a clamping mechanism (2) mounted on the work station slot (101) of the processing table (1); The clamping mechanism (2) includes a mounting plate (21) detachably mounted on the processing table (1) by bolts. The mounting plate (21) has four symmetrically arranged grooves (211) along its diagonal. A placement roller (22) is horizontally mounted in the area between two adjacent grooves (211) on the top surface of the mounting plate (21). A clamping roller (23) is rotatably mounted in the grooves (211) of the mounting plate (21) via a slider (231). The clamping roller (23) is perpendicular to the surface of the mounting plate (21). The bottom surface of the mounting plate (21) is rotatably connected to... The drive disk (24) has four arc grooves (241) spaced apart circumferentially. The slider (231) of the clamping roller (23) passes through the slide groove (211) of the mounting plate (21) and is located in the corresponding arc groove (241) of the drive disk (24). The bottom surface of the drive disk (24) is fixedly connected with at least two connecting posts (25) spaced apart circumferentially. The bottom surface of the mounting plate (21) is fixedly connected with a number of fixed posts (26) that are the same as the number of connecting posts (25). A tension spring (27) is provided between the connecting posts (25) and the corresponding fixed posts (26). A support plate (4) is vertically installed in the middle of the table surface of the processing table (1). On both sides of the top of the support plate (4), there are mounting brackets (5) corresponding to the work station slot (101). The end of the mounting bracket (5) is equipped with a photoelectric positioning module (6). The photoelectric positioning module (6) is located directly above the clamping mechanism (2) on the processing table (1). The photoelectric positioning module (6) is used to emit a laser crosshair to accurately calibrate the bonding reference surface of the rotor workpiece (100) on the clamping mechanism (2). A straightening mechanism (7) is provided on one side of the mounting plate (21). The straightening mechanism (7) is used to assist in straightening the rotor workpiece (100) clamped on the placement roller (22). The straightening mechanism (7) includes a fixing plate (71) fixed to one side of the mounting plate (21). A guide rod (72) is fixed on the fixing plate (71). A straightening component (8) is slidably installed on the fixing plate (71) through the guide rod (72). The straightening component (8) is used to position and straighten the rotor workpiece (100) placed on the placement roller (22). A first spring (73) is provided at the guide rod (72) between the fixing plate (71) and the straightening component (8).

2. The bonding fixture for neodymium iron boron magnets as described in claim 1, characterized in that, A handle (3) is provided at the drive disk (24) on the bottom surface of the mounting plate (21). The handle (3) includes a fixed rod (31) fixed to the bottom surface of the rotation center of the drive disk (24). The fixed rod (31) is an "L"-shaped rod and its rod end away from the drive disk (24) is hinged to a lever (32) through a connecting shaft (321). A guide plate (33) with an opening is fixedly provided on the end face of the lever (32) away from the fixed rod (31). A through groove adapted to the guide plate (33) is provided in the lever (32). A plug rod (34) is slidably connected in the through groove of the lever (32). The operating end of the plug rod (34) passes through the opening of the guide plate (33). A slot adapted to the plug rod (34) is provided at the end of the fixed rod (31) connected to the lever (32).

3. The bonding fixture for neodymium iron boron magnets as described in claim 2, characterized in that, The corrective component (8) includes a sliding seat (81) slidably connected to the fixed plate (71) via a guide rod (72). A connecting frame (82) is slidably connected to the sliding seat (81). A second spring (811) is provided between the sliding seat (81) and the connecting frame (82). The connecting frame (82) is flush with the sliding seat (81) under the elastic force of the second spring (811). Two mounting blocks (83) are symmetrically slidably connected to the connecting frame (82). A straightening rod (831) is fixedly connected to the top of the block (83) facing the mounting plate (21). The end of the straightening rod (831) is the tip of the protrusion on the surface of the rotor workpiece (100). The straightening rod (831) is used to contact and position the rotor workpiece (100). A two-way lead screw (84) is rotatably connected inside the connecting frame (82). The two-way lead screw (84) and the mounting block (83) are threaded together. A knob (841) is installed at one end of the two-way lead screw (84).

4. The bonding fixture for neodymium iron boron magnets as described in claim 3, characterized in that, A handle (9) is fixedly fitted on the outer side of the connecting frame (82).

5. The bonding fixture for neodymium iron boron magnets as described in claim 4, characterized in that, The mounting plate (21) is fixed to one side of a placement seat (10), and a locking block (11) is vertically slidably connected to the placement seat (10). A lifting rod (12) is provided on the top of the locking block (11), and the lower side of the locking block (11) is an inclined surface. The locking block (11) is used to block the locking lever (32).

6. A method for bonding neodymium iron boron magnets, using the bonding fixture for neodymium iron boron magnets as described in claim 5, characterized in that, The specific steps are as follows: S1. The operating handle (3) rotates the drive disk (24) to retract the clamping roller (23) inward, and the locking block (11) limits the lever (32) to maintain the retracted state. Then, the rotor workpiece (100) is put into the clamping roller (23) and placed on the placement roller (22). Then, the locking block (11) is lifted to release the limit. Under the action of the tension spring (27), the drive disk (24) is reset and rotated, which drives the clamping roller (23) to expand outward and roll and clamp the rotor workpiece (100) from the inner wall. S2. According to the size of the rotor workpiece (100), rotate the knob (841) to adjust the two-way lead screw (84) so ​​that the distance between the two straightening rods (831) matches the position of the workpiece boss. Push the handle (9) to drive the straightening part (8). Use the tip of the straightening rod (831) to abut against the side wall boss of the rotor workpiece (100). At the same time, cooperate with the photoelectric positioning module (6) to project a laser crosshair to further calibrate the bonding reference surface. S3. The neodymium iron boron magnet is pasted onto the magnet slot of the rotor workpiece (100) and the adhesive is applied for fixation. After each slot is pasted, the straightening device (8) is operated to precisely rotate the rotor workpiece (100) to the next station. After the rotor workpiece (100) is pasted, the handle device (3) is operated again to retract the clamping roller (23) and remove the rotor workpiece (100) for subsequent curing treatment.

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