Surface polishing device for motor rotor manufacturing

Abstract

The invention relates to the technical field of grinding, and provides a surface grinding device for motor rotor manufacturing, which comprises a rack, a control panel, a workbench, a longitudinal clamping part, a first grinding mechanism, a radial adjusting part and a second driving module, and is characterized in that the first grinding mechanism comprises a first driving module, a driven pipe and a grinding part; the grinding part comprises a grinding head, a pin rod, a movable pipe, a ball head, a spring core, a clamping block and a sliding rod, on one hand, the spring core can be used for automatically driving the grinding head to be adjusted to the position between the two adjacent rotor conductors, and on the other hand, the inner sides of the rotor conductors can be ground by controlling the grinding heads to do linear motion; the second driving module achieves the purpose of polishing the outer side of the rotor conductor and the two end faces of the workpiece through the polishing block in the mode that the polishing head controls the workpiece to rotate, the function of automatically polishing the inner side, the outer side and the two end faces of the rotor conductor is achieved, and the beneficial effects of automatically polishing the inner side and the outer side of the rotor conductor and being high in working efficiency are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of grinding, and in particular to a surface grinding device for manufacturing a motor rotor. Background Art

[0002] The squirrel cage rotor is a rotor structure widely used in asynchronous motors. Its name comes from its appearance, which is similar to a mouse cage. The squirrel cage rotor is usually composed of a series of aluminum or copper bars (conductors) and short-circuit rings. The conductor bars are connected at both ends of the rotor through short-circuit rings to form a closed circuit. After the squirrel cage rotor is processed, grinding equipment is required to remove burrs on the surface.

[0003] Patent No. CN113442007B discloses a surface grinding machine for manufacturing motor rotors, including an L-shaped base, a limiting device and a grinding device, wherein a limiting device is provided in the middle of the right end of the vertical section of the L-shaped base, and a grinding device is provided on the upper side of the right end of the vertical section of the L-shaped base; the present invention can solve the problem that when stacked rotor cores are subjected to surface grinding, uneven surfaces are prone to occur, resulting in positional deviation during the grinding process, which has an adverse effect on the grinding effect, and when grinding, the grinding waste is prone to fall between the gaps of the rotor cores and in the empty slots. The technical solution can limit, press and flatten the stacked rotor cores, ensure the grinding effect of the rotor cores, and reduce the gap between each rotor core, so that waste is not easy to flow in, and the empty slots on the rotor cores are blocked to isolate the grinding waste outside the empty slots.

[0004] Although the above technical solution can prevent blockage during the grinding process of the rotor core, it still has the following defects when used to grind the rotor conductor of the squirrel cage rotor: on the one hand, the position of the grinding head cannot be adjusted according to the position of the rotor conductor; on the other hand, it is impossible to automatically control several grinding heads to grind the inner sides of several rotor conductors. Summary of the invention

[0005] The purpose of the present invention is to provide a surface grinding device for manufacturing a motor rotor, aiming to solve the problems existing when using existing surface grinding processing machinery for manufacturing a motor rotor.

[0006] To achieve the above object, the present invention provides the following technical solution: a surface grinding device for manufacturing a motor rotor, comprising a frame, a control panel, a workbench and a longitudinal clamping portion, wherein the workbench and the control panel are both fixedly connected to the frame, and the lower part of the longitudinal clamping portion is fixedly connected to the workbench, and further comprising:

[0007] A first grinding mechanism, the first grinding mechanism comprises a first driving module, a driven tube and a grinding part, the first driving module is connected to the workbench, the driven tube is connected to the first driving module, a curved groove is arranged on the surface of the driven tube, the grinding part comprises a grinding head, a pin rod, a movable tube, a ball head, a spring core, a clamping block and a sliding rod, one end of the movable tube is fixedly connected with a ball head, the ball head is slidably connected in the curved groove, the pin rod is slidably connected to the other end of the movable tube, the spring core is connected between the movable tube and the pin rod, the grinding head is fixedly connected to the end of the pin rod away from the movable tube, the clamping block is fixedly connected to the pin rod, and the sliding rod is fixedly connected to the clamping block;

[0008] A radial adjustment portion slidably connected to the upper portion of the longitudinal clamping portion, the radial adjustment portion comprising a first gear ring and a second gear ring, the surfaces of the first gear ring and the second gear ring are respectively provided with a linear guide rail and an arc guide rail, and the slide bar is slidably connected in the linear guide rail and the arc guide rail;

[0009] A second drive module is drivingly connected to the first gear ring and the second gear ring.

[0010] As a further solution of the present invention, the two ends of the driven tube are respectively fixedly connected with a square end and a circular end, the No. 1 gear ring and the No. 2 gear ring are both movably connected to the circular end, the first driving module includes a first driving member, an active tube and a transmission gear, the transmission gear is fixedly connected to the active tube, the first driving member is fixedly connected to the workbench, the active tube is rotatably connected to the workbench, the first driving member is transmission-connected to the transmission gear, the active tube is a square hole tube, and the square end is plugged and connected in the active tube.

[0011] As a further solution of the present invention, the first grinding mechanism also includes a dust suction pump and a bent pipe, one end of the bent pipe is movably connected to an end of the active pipe away from the square end, the other end of the bent pipe is fixedly connected to the dust suction pump, the dust suction pump is fixedly connected to the frame, and a plurality of dust suction holes are arranged on the surface of the driven pipe.

[0012] As a further solution of the present invention, the longitudinal clamping part includes an annular shell and a longitudinal telescopic part. The longitudinal telescopic part is fixedly connected to the bottom of the annular shell. The longitudinal telescopic part is fixedly connected to the workbench. The first gear ring and the second gear ring are both slidably connected in the annular shell.

[0013] As a further solution of the present invention, the second driving module includes a second driving member, a driving gear and an adjusting member, the second driving member includes a second driving motor, a pin shaft and a key bar, the adjusting member includes an electromagnet and a reset spring, the second driving motor and the electromagnet are both fixedly connected to the annular shell, the second driving motor is connected to a pin shaft, a key bar is provided on the surface of the pin shaft, the driving gear is slidably connected to the surface of the pin shaft and the key bar, a magnetic ring is inlaid on the surface of the driving gear, and the reset spring is connected between the electromagnet and the driving gear.

[0014] As a further solution of the present invention, it also includes a clamping strip, which passes through the annular shell, and is a bent rod. The lower side of the clamping strip is in contact with the surface of the driving gear, and the clamping strip is in engagement contact with the meshing teeth of the first gear ring.

[0015] As a further solution of the present invention, it also includes a second grinding mechanism, which includes a transverse telescopic member and a grinding block. The transverse telescopic member is fixedly connected to the frame, the grinding block is fixedly connected to the transverse telescopic member, and the grinding block is in sliding contact with the outer side of the workpiece.

[0016] As a further solution of the present invention, the number of the clamping blocks and the grinding heads are both several, the clamping blocks are in contact with the inner sides of both ends of the workpiece, and the grinding heads are in contact with two adjacent rotor conductor surfaces on the workpiece surface.

[0017] The beneficial effects of the present invention are that, on the one hand, the spring core can be used to automatically drive the grinding head to adjust to between two adjacent rotor conductors, and on the other hand, the inner sides of several rotor conductors can be polished by controlling several grinding heads to make linear motion. The second driving module is used to control the rotation of the grinding head through the radial adjustment part to achieve the purpose of adjusting the position of the grinding head according to the position of the rotor conductor. The spring core is used to ensure that the grinding head is located between two adjacent rotor conductors. The second driving module controls the rotation of the workpiece through the grinding head to achieve the purpose of using the grinding block to grind the outer side of the rotor conductor and the two end faces of the workpiece, thereby realizing the function of automatically grinding the inner and outer sides of several rotor conductors and the two end faces of the workpiece, and having the characteristics of automatically grinding the inner and outer sides of the rotor conductor and the two end faces of the workpiece and high work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereogram of the present invention.

[0019] Figure 2 It is an exploded view of the present invention.

[0020] Figure 3 It is an assembly diagram of a workbench and a longitudinal clamping portion according to an embodiment of the present invention.

[0021] Figure 4It is an exploded view of the first grinding mechanism according to an embodiment of the present invention.

[0022] Figure 5 FIG. 4 is a three-dimensional diagram of a first driving module according to an embodiment of the present invention.

[0023] Figure 6 It is a stereoscopic view of a driven pipe according to an embodiment of the present invention.

[0024] Figure 7 It is a three-dimensional diagram of the grinding part according to an embodiment of the present invention.

[0025] Figure 8 It is a plan view of the first grinding mechanism according to an embodiment of the present invention.

[0026] Fig. 9 For the present invention Figure 8 A partial enlarged view of point a in the middle.

[0027] Fig.10 It is an exploded view of the second driving module of the embodiment of the invention.

[0028] Fig.11 It is an exploded view of the radial adjustment part of an embodiment of the present invention.

[0029] Fig.12 This is a three-dimensional diagram of the present invention using a grinding part to grind a rotor conductor.

[0030] Fig.13 For the present invention Fig.12 A partial enlarged view of point b in the middle.

[0031] Fig.14 It is a plan cross-sectional view of the present invention.

[0032] Fig.15 It is a front view of the present invention.

[0033] Figure numerals: 1-frame, 2-workbench, 3-longitudinal clamping part, 31-annular shell, 32-longitudinal telescopic member, 4-first grinding mechanism, 41-first driving module, 411-first driving member, 412-active tube, 413-transmission gear, 42-driven tube, 421-curved groove, 422-square end, 423-round end, 424-dust suction hole, 43-grinding part, 431-grinding head, 432-pin rod, 433-movable tube, 434-ball head, 435-spring core, 436-clamping block, 437- Slide rod, 44-dust suction pump, 441-bend pipe, 5-second drive module, 51-second drive member, 511-second drive motor, 512-pin shaft, 513-key bar, 52-drive gear, 521-magnetic ring, 53-adjusting member, 531-electromagnet, 532-reset spring, 6-radial adjustment part, 61-No. 1 gear ring, 611-linear guide rail, 62-No. 2 gear ring, 621-arc guide rail, 7-second grinding mechanism, 71-lateral telescopic member, 72-grinding block, 8-control panel, 9-workpiece, 10-card strip. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0036] See also Figures 1 to 15 In one embodiment of the present invention, a surface grinding device for manufacturing a motor rotor includes a frame 1, a control panel 8, a workbench 2 and a longitudinal clamping portion 3, wherein the workbench 2 and the control panel 8 are both fixedly connected to the frame 1, and the lower part of the longitudinal clamping portion 3 is fixedly connected to the workbench 2, and further includes:

[0037] The first grinding mechanism 4 includes a first driving module 41, a driven tube 42 and a grinding part 43. The first driving module 41 is connected to the workbench 2, the driven tube 42 is connected to the first driving module 41, and a curved groove 421 is provided on the surface of the driven tube 42. The grinding part 43 includes a grinding head 431, a pin rod 432, a movable tube 433, a ball head 434, a spring core 435, a clamping block 436 and a sliding rod 437. A ball head 434 is fixedly connected to one end of the movable tube 433, and the ball head 434 is slidably connected in the curved groove 421. The pin rod 432 is slidably connected to the other end of the movable tube 433. The spring core 435 is connected between the movable tube 433 and the pin rod 432. The grinding head 431 is fixedly connected to the end of the pin rod 432 away from the movable tube 433. The clamping block 436 is fixedly connected to the pin rod 432, and the sliding rod 437 is fixedly connected to the clamping block 436.

[0038] A radial adjustment portion 6 slidably connected to the upper portion of the longitudinal clamping portion 3, the radial adjustment portion 6 comprising a first gear ring 61 and a second gear ring 62, the surfaces of the first gear ring 61 and the second gear ring 62 are respectively provided with a linear guide rail 611 and an arc guide rail 621, the sliding rod 437 is slidably connected in the linear guide rail 611 and the arc guide rail 621;

[0039] The second driving module 5 is transmission-connected to the first gear ring 61 and the second gear ring 62 .

[0040] See also Figure 3 Furthermore, the longitudinal clamping portion 3 includes an annular shell 31 and a longitudinal telescopic member 32. The longitudinal telescopic member 32 is fixedly connected to the bottom of the annular shell 31. The longitudinal telescopic member 32 is fixedly connected to the workbench 2. The first gear ring 61 and the second gear ring 62 are both slidably connected in the annular shell 31.

[0041] See also Figures 10 to 12 Further, the second driving module 5 includes a second driving member 51, a driving gear 52 and an adjusting member 53. The second driving member 51 includes a second driving motor 511, a pin shaft 512 and a key strip 513. The adjusting member 53 includes an electromagnet 531 and a reset spring 532. The second driving motor 511 and the electromagnet 531 are both fixedly connected to the annular shell 31. The second driving motor 511 is connected to the pin shaft 512. The surface of the pin shaft 512 is provided with a key strip 513. The driving gear 52 is slidably connected to the surface of the pin shaft 512 and the key strip 513. The surface of the driving gear 52 is inlaid with a magnetic ring 521. The reset spring 532 is connected between the electromagnet 531 and the driving gear 52. The clamping strip 10 passes through the annular shell 31. The clamping strip 10 is a bent rod. The bottom of the clamping strip 10 contacts the surface of the driving gear 52. The clamping strip 10 is in engagement with the meshing teeth of the first gear ring 61.

[0042] In the embodiment of the present invention, the number of the clamping blocks 436 and the grinding heads 431 are both several, the clamping blocks 436 are in contact with the inner sides of both ends of the workpiece 9, and the grinding heads 431 are in contact with two adjacent rotor conductor surfaces on the surface of the workpiece 9. When the electromagnet 531 is powered off, the elastic force of the reset spring 532 drives the driving gear 52 to be connected with the second gear ring 62 in transmission. At this time, the driving gear 52 is in contact with the bottom of the pin shaft 512, and the clamping strip 10 is engaged with the meshing teeth of the first gear ring 61 to limit the first gear ring 61. When the electromagnet 531 is powered on, the energized electromagnet 531 is magnetically attracted to the magnetic ring 521. At this time, the driving gear 52 is connected with the first gear ring 61 in transmission, and the clamping strip 10 is disengaged from the meshing of the first gear ring 61.

[0043] See also Figures 4 to 13 In one embodiment of the present invention, the two ends of the driven tube 42 are respectively fixedly connected with a square end 422 and a circular end 423, the first gear ring 61 and the second gear ring 62 are both movably connected to the circular end 423, the first driving module 41 includes a first driving member 411, an active tube 412 and a transmission gear 413, the transmission gear 413 is fixedly connected to the active tube 412, the first driving member 411 is fixedly connected to the workbench 2, the active tube 412 is rotatably connected to the workbench 2, the first driving member 411 is transmission-connected to the transmission gear 413, the active tube 412 is a square hole tube, and the square end 422 is plugged and connected in the active tube 412.

[0044] See also Figures 12 to 15 Furthermore, the first grinding mechanism 4 also includes a dust suction pump 44 and a curved pipe 441, one end of the curved pipe 441 is movably connected to one end of the active pipe 412 away from the square end 422, and the other end of the curved pipe 441 is fixedly connected to the dust suction pump 44, and the dust suction pump 44 is fixedly connected to the frame 1, and a plurality of dust suction holes 424 are arranged on the surface of the driven pipe 42.

[0045] In the embodiment of the present invention, the rotating driven tube 42 not only utilizes the sliding connection between the curved groove 421 and the ball head 434 to drive the grinding head 431 to perform reciprocating linear motion along the axis of the workpiece 9, but after the dust suction pump 44 is turned on, the waste chips or dust generated by grinding can also be collected into the dust collecting box or waste chip box through the dust suction holes 424, the square end head 422, the active tube 412 and the curved tube 441 on the surface of the driven tube 42, thereby having the characteristics of high component utilization and automatic dust removal.

[0046] See also Figures 9 and 10In one embodiment of the present invention, it further includes a second grinding mechanism 7, which includes a transverse telescopic member 71 and a grinding block 72. The transverse telescopic member 71 is fixedly connected to the frame 1, and the grinding block 72 is fixedly connected to the transverse telescopic member 71. The grinding block 72 is in sliding contact with the outer side of the workpiece 9.

[0047] In the embodiment of the present invention, the longitudinal telescopic member 32 and the transverse telescopic member 71 are both hydraulic telescopic rods, and the cross-section of the grinding block 72 is T-shaped. When the second driving member 51 and the first driving member 411 are used to simultaneously control the No. 1 gear ring 61, the No. 2 gear ring 62, and the first grinding mechanism 4 to rotate synchronously, since the multiple grinding heads 431 are distributed between two adjacent rotor conductors, the workpiece 9 can rotate synchronously, so that the grinding block 72 grinds the outer side of the rotor conductor and the two end faces of the workpiece 9, thereby realizing automatic grinding of the inner and outer sides of multiple rotor conductors and the two end faces of the workpiece 9.

[0048] Working principle: first, place the workpiece 9 on the surface of the workbench 2, and then use the longitudinal telescopic control annular shell 31, the first grinding mechanism 4, the second driving module 5 and the radial adjustment part 6 to descend together. In the initial state, the elastic force of the spring core 435 drives the distance between the ball head 434 and the driven tube 42 to be in the maximum state, so the control electromagnet 531 is powered off, and the elastic force of the reset spring 532 drives the driving gear 52 to be connected with the second gear ring 62. At this time, the driving gear 52 contacts the bottom of the pin shaft 512, and the clamping strip 10 is engaged with the meshing teeth of the first gear ring 61 to limit the first gear ring 61. The second driving motor 511 is used to control the rotation of the driving gear 52 and the second gear ring 62. The rotating second gear ring 62 drives the slide bar 437 along the linear guide rail 611 on the surface of the first gear ring 61 through the arc guide rail 621 to move in the direction close to the driven tube 42, thereby ensuring that the grinding head 431 can enter the workpiece 9;

[0049] When the grinding head 431 moves to the position of the upper end surface of the workpiece 9, the square end 422 of the driven tube 42 is inserted into the active tube 412, and the control electromagnet 531 is energized. The energized electromagnet 531 is magnetically attracted to the magnetic ring 521. At this time, the driving gear 52 is connected to the first gear ring 61, and the clamping strip 10 is separated from the meshing teeth of the first gear ring 61. The second driving member 51 and the first driving member 411 are used to simultaneously control the first gear ring 61, the second gear ring 62, and the first grinding mechanism 4 to rotate synchronously. The angle sensor on the surface of the active tube 412 is used to monitor the rotation angle, which is used to adjust the grinding head 431 to between two adjacent rotor conductors. Then, the annular housing 31, the first grinding mechanism 4, the second driving module 5 and the radial adjustment part 6 are controlled to descend together by longitudinal telescopic control until the annular housing 31 contacts the end surface of the workpiece 9 and stops. The control electromagnet 531 is then turned off. At this time, the elastic force of the spring core 435 drives the grinding head 431 to enter between two adjacent rotor conductors.

[0050] The second driving member 51 is used to control the rotation of the active tube 412, the square end 422 and the driven tube 42. The rotating driven tube 42 drives the grinding head 431 to make reciprocating linear motion along the axis of the workpiece 9 by slidingly connecting the curved groove 421 with the ball head 434. The grinding head 431 performs grinding or deburring by sliding contact with the two rotor conductors. The grinding head 431 is adjusted to the position between two other adjacent rotor conductors for grinding by the above operation method.

[0051] When the grinding of the inner side of the rotor conductor is completed, continue to control the electromagnet 531 to be energized, use the lateral telescopic member 71 to control the grinding block 72 to contact the outer side of the rotor conductor and the two end faces of the workpiece 9, and use the second driving member 51 and the first driving member 411 to simultaneously control the No. 1 gear ring 61, the No. 2 gear ring 62, and the first grinding mechanism 4 to rotate synchronously. Since several grinding heads 431 are distributed between two adjacent rotor conductors, the workpiece 9 can rotate synchronously, so that the grinding block 72 grinds the outer side of the rotor conductor and the two end faces of the workpiece 9, thereby realizing automatic grinding of the inner and outer sides of several rotor conductors and the two end faces of the workpiece 9.

[0052] In summary, the present application utilizes a structural design in which the first grinding mechanism 4, the radial adjustment portion 6 and the second driving module 5 cooperate with each other. On the one hand, the spring core 435 can be used to automatically drive the grinding head 431 to adjust between two adjacent rotor conductors. On the other hand, the inner sides of several rotor conductors can be polished by controlling several grinding heads 431 to make linear motion. The second driving module 5 controls the rotation of the grinding head 431 through the radial adjustment portion 6 to achieve the purpose of adjusting the position of the grinding head 431 according to the position of the rotor conductor. The spring core 435 is used to ensure that the grinding head 431 is located between two adjacent rotor conductors. The second driving module 5 controls the rotation of the workpiece 9 through the grinding head 431 to achieve the purpose of grinding the outer side of the rotor conductor and the two end faces of the workpiece 9 by the grinding block 72, thereby realizing the function of automatically grinding the inner and outer sides of several rotor conductors and the two end faces of the workpiece 9, and having the characteristics of automatically grinding the inner and outer sides of the rotor conductor and the two end faces of the workpiece 9 and high work efficiency.

[0053] For those skilled in the art, although several embodiments and examples of the present invention have been described, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the main purpose of the invention.

[0054] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A surface grinding device for manufacturing a motor rotor, comprising a frame (1), a control panel (8), a workbench (2) and a longitudinal clamping portion (3), wherein the workbench (2) and the control panel (8) are both fixedly connected to the frame (1), and the lower portion of the longitudinal clamping portion (3) is fixedly connected to the workbench (2), characterized in that: Also includes: A first grinding mechanism (4), the first grinding mechanism (4) comprising a first driving module (41), a driven tube (42) and a grinding part (43), the first driving module (41) being connected to the workbench (2), the driven tube (42) being connected to the first driving module (41), a curved groove (421) being provided on the surface of the driven tube (42), the grinding part (43) comprising a grinding head (431), a pin rod (432), a movable tube (433), a ball head (434), a spring core (435), a clamping block (436) and a sliding rod (437), One end of the movable tube (433) is fixedly connected with a ball head (434), the ball head (434) is slidably connected in the curved groove (421), the pin rod (432) is slidably connected to the other end of the movable tube (433), the spring core (435) is connected between the movable tube (433) and the pin rod (432), the grinding head (431) is fixedly connected to the end of the pin rod (432) away from the movable tube (433), the clamping block (436) is fixedly connected to the pin rod (432), and the sliding rod (437) is fixedly connected to the clamping block (436); A radial adjustment portion (6) slidably connected to the upper portion of the longitudinal clamping portion (3), the radial adjustment portion (6) comprising a first gear ring (61) and a second gear ring (62), surfaces of the first gear ring (61) and the second gear ring (62) are respectively provided with a linear guide rail (611) and an arc guide rail (621), and the sliding rod (437) is slidably connected in the linear guide rail (611) and the arc guide rail (621); A second driving module (5) is drivingly connected to the first gear ring (61) and the second gear ring (62).

2. A surface grinding device for manufacturing a motor rotor according to claim 1, characterized in that: The two ends of the driven tube (42) are respectively fixedly connected with a square end head (422) and a circular end head (423); the first gear ring (61) and the second gear ring (62) are both movably connected to the circular end head (423); the first driving module (41) comprises a first driving member (411), an active tube (412) and a transmission gear (413); the transmission gear (413) is fixedly connected to the active tube (412); the first driving member (411) is fixedly connected to the workbench (2); the active tube (412) is rotatably connected to the workbench (2); the first driving member (411) is transmission-connected to the transmission gear (413); the active tube (412) is a square-hole tube; the square end head (422) is plug-connected in the active tube (412).

3. A surface grinding device for manufacturing a motor rotor according to claim 2, characterized in that: The first grinding mechanism (4) further comprises a dust suction pump (44) and a curved pipe (441); one end of the curved pipe (441) is movably connected to an end of the active pipe (412) away from the square end head (422); the other end of the curved pipe (441) is fixedly connected to the dust suction pump (44); the dust suction pump (44) is fixedly connected to the frame (1); and a plurality of dust suction holes (424) are provided on the surface of the driven pipe (42).

4. A surface grinding device for manufacturing a motor rotor according to claim 3, characterized in that: The longitudinal clamping portion (3) comprises an annular shell (31) and a longitudinal telescopic member (32); the longitudinal telescopic member (32) is fixedly connected to the lower side of the annular shell (31); the longitudinal telescopic member (32) is fixedly connected to the workbench (2); and the first gear ring (61) and the second gear ring (62) are both slidably connected in the annular shell (31).

5. A surface grinding device for manufacturing a motor rotor according to claim 4, characterized in that: The second driving module (5) comprises a second driving member (51), a driving gear (52) and an adjusting member (53); the second driving member (51) comprises a second driving motor (511), a pin shaft (512) and a key bar (513); the adjusting member (53) comprises an electromagnet (531) and a return spring (532); the second driving motor (511) and the electromagnet (531) are both fixedly connected to the annular housing (31); the second driving motor (511) is connected to the pin shaft (512); a key bar (513) is arranged on the surface of the pin shaft (512); the driving gear (52) is slidably connected to the surfaces of the pin shaft (512) and the key bar (513); a magnetic ring (521) is inlaid on the surface of the driving gear (52); and the return spring (532) is connected between the electromagnet (531) and the driving gear (52).

6. A surface grinding device for manufacturing a motor rotor according to claim 5, characterized in that: It also includes a clamping strip (10), which passes through the annular shell (31), is a bent rod, and the lower part of the clamping strip (10) is in contact with the surface of the driving gear (52), and the clamping strip (10) is in engagement contact with the meshing teeth of the first gear ring (61).

7. A surface grinding device for manufacturing a motor rotor according to claim 1, characterized in that: The machine also comprises a second grinding mechanism (7), the second grinding mechanism (7) comprising a transverse telescopic member (71) and a grinding block (72), the transverse telescopic member (71) being fixedly connected to the frame (1), the grinding block (72) being fixedly connected to the transverse telescopic member (71), and the grinding block (72) being in sliding contact with the outer side of the workpiece (9).

8. The surface grinding device for manufacturing a motor rotor according to claim 1, characterized in that: The number of the clamping blocks (436) and the number of the grinding heads (431) are both several; the clamping blocks (436) are in contact with the inner sides of both ends of the workpiece (9); and the grinding heads (431) are in contact with two adjacent rotor conductor surfaces on the surface of the workpiece (9).

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