Shaft sleeve riveting device for motor end cover machining

Abstract

The invention discloses a shaft sleeve riveting device for motor end cover machining, and relates to the technical field of motor machining. The device comprises a base, a bearing disc is rotationally arranged on the base, a plurality of annularly-distributed station grooves are formed in the bearing disc, and a driving part used for driving the bearing disc to rotate intermittently is arranged on the base; the plurality of positioning pieces are respectively arranged in the plurality of station grooves; the first supporting rods, the second supporting rods and the third supporting rods form a positioning part, the first supporting rods can slide horizontally, and the positioning part can retract inwards or expand outwards, so that the positioning part can retract inwards before assembly so as to be assembled more smoothly, and the positioning part can expand outwards after assembly, so that the positioning part is more convenient to assemble. The motor end cover and the shaft sleeve which are assembled are positioned, and the cooperation of internal shrinkage and external expansion is not only suitable for riveting accessories of different sizes and specifications, but also improves the universality and the flexibility.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of motor machining, and in particular to a shaft sleeve riveting and pressing device for motor end cover machining. BACKGROUND

[0002] The main function of a motor is to generate driving torque, and the motor serves as a power source of an electric appliance or various machines. The motor is mainly composed of a stator and a rotor. The direction of force movement of a current-carrying wire in a magnetic field is related to the directions of the current and the magnetic field. The motor end cover is a cover of a motor shell and is generally divided into a front cover and a rear cover and is used for fixing and supporting a motor rotating shaft. In order to facilitate the fixation and positioning of other motor components, a shaft sleeve needs to be riveted and pressed on the motor end cover. According to the search of the patent with the publication number CN111151995B, an automatic shaft sleeve riveting and pressing device for a motor end cover is disclosed. The coaxial positioning of the end cover and the shaft sleeve is realized through the positioning structure, the shaft sleeve is effectively riveted and pressed on the end cover, and the stamping efficiency is improved. However, the positioning shaft has a fixed size and can only be used for riveting and pressing the end cover and the shaft sleeve with the same size specification. The device cannot be used for riveting and pressing end covers and shaft sleeves with different specifications, and the versatility is insufficient. In addition, the positioning shaft is a stepped shaft with two shaft segments with different diameters. The shaft segment with the larger diameter is used for positioning the end cover, and the shaft segment with the smaller diameter is used for positioning the shaft sleeve. Since the positioning segments are used for positioning different components, the diameters are equal. During the positioning and assembly stage, the shaft sleeve is prone to being stuck due to the friction force. Although the top end of the positioning shaft is configured as a conical structure, the assembly friction force is reduced to a certain extent. However, the feeding and discharging assembly is not smooth enough, thereby affecting the machining efficiency. Therefore, the application provides a shaft sleeve riveting and pressing device for motor end cover machining. SUMMARY

[0003] The application aims to solve the problems in the background art. The application provides a shaft sleeve riveting and pressing device for motor end cover machining.

[0004] In order to achieve the above-mentioned purpose, the application specifically adopts the following technical scheme: A shaft sleeve riveting and pressing device for motor end cover machining comprises: A base is provided with a bearing disc rotating thereon. A plurality of work station grooves are arranged in a ring shape on the bearing disc. A driving member is arranged on the base and is used for driving the intermittent rotation of the bearing disc. A plurality of positioning members are arranged in the plurality of work station grooves, the positioning member comprises a positioning disc fixed in the work station groove, a plurality of first supporting rods are horizontally slidably arranged on the positioning disc, a second supporting rod is movably sleeved on the first supporting rod, a first spring is connected between the first supporting rod and the second supporting rod, a third supporting rod is arranged on the second supporting rod, and a driving part is arranged on the positioning disc for driving the plurality of first supporting rods to synchronously approach or synchronously move away from the center of the positioning disc. A stamping part is arranged on the base and is used for riveting and pressing the shaft sleeve on the motor end cover.

[0005] Further, the driving part comprises a vertical rod coaxially fixed on the bottom of the positioning disc, a sleeve is slidably sleeved on the vertical rod, the sleeve is hingedly connected with a connecting rod, and the sleeve is connected with the positioning disc through a second spring sleeved on the vertical rod.

[0006] Further, a first arc-shaped plate is fixed on the base, a first limiting groove is formed in the first arc-shaped plate, a horizontal rod is fixed on the sleeve, a bearing wheel is arranged on the horizontal rod, and the bearing wheel is rollingly inserted into the first limiting groove.

[0007] Further, an adjusting groove is formed through the second supporting rod, a screw rod is fixed on the third supporting rod, the end of the screw rod is movably inserted into the adjusting groove and is threadedly sleeved with a nut.

[0008] Further, the bottom end of the vertical rod is fixed with a U-shaped seat, a roller is rotatably arranged on the U-shaped seat, and the roller rollingly overlaps with the base.

[0009] Further, a connecting cylinder in communication with the work station groove is formed on the bearing disc, a plurality of first lead screws in annular distribution are threadedly penetrated into the connecting cylinder, and a supporting block is rotatably connected to the end of the first lead screw.

[0010] Further, the driving member comprises a shaft rotatably arranged on the base, the bearing disc is fixed on the shaft, a driven groove wheel is fixed on the shaft, a servo motor is arranged on the base, and a transmission dial is fixed on the output shaft of the servo motor and is in transmission cooperation with the driven groove wheel.

[0011] Further, the stamping part comprises a support arranged on the base, an electric push rod is arranged on the support, a stamping cylinder is fixed on the piston end of the electric push rod, and a plurality of avoiding grooves are formed through the stamping cylinder.

[0012] Further, an adjusting frame is arranged on the base, a second lead screw is threadedly penetrated into the adjusting frame, a second arc-shaped plate is rotatably connected to the free end of the second lead screw, and a second limiting groove is formed in the second arc-shaped plate.

[0013] Furthermore, the stamping cylinder is provided with a convex ring, and a plurality of guide rods slide through the convex ring. A pressure ring is fixed at the bottom end of the plurality of guide rods, and a third spring sleeved on the guide rod is installed between the pressure ring and the convex ring.

[0014] The beneficial effects of this invention are as follows: In this invention, a number of first support rods, a number of second support rods, and a number of third support rods constitute a positioning component. Since the number of first support rods can slide horizontally, the positioning component can retract inward or expand outward. Before assembly, the positioning component can retract inward to facilitate smoother assembly. After assembly, the positioning component expands outward to position the assembled motor end cover and bushing. This combination of retraction and expansion is not only suitable for riveting accessories of different sizes and specifications, improving versatility and flexibility, but also improves the smoothness and convenience of loading and unloading.

[0015] In this invention, a controllable track is provided through the cooperation of the first arc-shaped plate, the first limiting groove, the second arc-shaped plate, and the second limiting groove. As the bearing plate rotates, the positioning component can be automatically controlled to retract or expand. During the assembly loading and unloading stages, it is kept in the retracted state to facilitate loading and unloading. When riveting is about to be performed, it is switched to the expanded state to ensure the positioning of the motor end cover and bushing, which facilitates riveting. This automatic control of the timing of the expansion and retraction of the positioning component realizes automated linkage without the need for an additional power source. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural cross-sectional view of the present invention; Figure 3 This is another three-dimensional structural cross-sectional view of the present invention; Figure 4 This is a partial three-dimensional structural diagram of the present invention; Figure 5 This is a three-dimensional structural diagram of the positioning component of the present invention; Figure 6 This is a three-dimensional structural cross-sectional view of the positioning component of the present invention; Figure 7 This is the present invention. Figure 2 Enlarged view of point A in the middle; Figure 8 This is the present invention. Figure 2 Enlarged view at point B in the middle; Figure 9 This is the present invention. Figure 3 Enlarged view of point C.

[0017] Reference numerals: 1. Base; 2. Bearing plate; 3. Station slot; 4. Driving component; 5. Positioning component; 6. Stamped component; 7. First arc-shaped plate; 8. First limiting slot; 9. Crossbar; 10. Bearing wheel; 11. Adjusting slot; 12. Screw; 13. Nut; 14. U-shaped seat; 15. Roller; 16. Connecting cylinder; 17. First lead screw; 18. Support block; 19. Adjusting frame; 20. Second lead screw; 21. Second arc-shaped plate; 22. Second limiting slot; 23. Guide rod; 24. Pressure ring; 25, third spring; 401, shaft; 402, driven grooved wheel; 403, servo motor; 404, transmission dial; 501, positioning plate; 502, first support rod; 503, second support rod; 504, first spring; 505, third support rod; 506, drive unit; 5061, vertical rod; 5062, sleeve; 5063, connecting rod; 5064, second spring; 601, bracket; 602, electric push rod; 603, stamping cylinder; 604, clearance groove. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0019] like Figures 1-9 As shown, an embodiment of the present invention provides a bushing riveting device for machining motor end caps, comprising: A base 1 is provided on which a bearing plate 2 is rotatably mounted. The bearing plate 2 has several work station slots 3 arranged in a ring. The base 1 is provided with a driving component 4 for intermittently rotating the bearing plate 2. By setting several work station slots 3 on the bearing plate 2, the bearing plate 2 is driven to rotate intermittently by the driving component 4. Preferably, there are four work station slots 3. One work station slot 3 is used as a riveting station. The riveting station performs riveting during the rotation stop phase. The remaining three work station slots 3 are used as loading and unloading stations (two of which are used for loading, respectively for assembling the motor end cover and the bushing, and the remaining one is used as the unloading station), thereby performing rotational alternating riveting operations. Several positioning components 5 are respectively disposed in several workstation slots 3. Each positioning component 5 includes a positioning disk 501 fixed in the workstation slot 3. Several first support rods 502 are horizontally slidably disposed on the positioning disk 501. Preferably, the first support rods 502 are vertical rods. Several straight grooves are formed on the positioning disk 501, and the intersection point of the axes of the several straight grooves coincides with the center of the positioning disk 501. The several first support rods 502 are horizontally slidably inserted into the several straight grooves. Second support rods 503 are movably sleeved on the first support rods 502. A first spring 504 connects the first support rods 502 and the second support rods 503. Preferably, as shown in the figure... Figure 6As shown, the second support rod 503 is L-shaped, with a slot at one of its vertical ends. The end of the first support rod 502 is movably inserted into the slot, and the first spring 504 is located in the slot. A third support rod 505 is provided on the second support rod 503, and the third support rod 505 is located on the horizontal section of the second support rod 503. In the actual assembly process, the motor end cover is first placed on the carrier plate 2, and several first support rods 502 are movably inserted through the riveting holes on the motor end cover. When the motor end cover is placed flat on the carrier plate 2, the vertical section of the second support rod 503 is exactly aligned with the motor end cover. The inner walls of the riveting holes of the end cover overlap to position the motor end cover. After the motor end cover is placed, the bushing is placed. When placing the bushing, it is placed on the transverse sections of several second support rods 503, and several third support rods 505 overlap with the inner wall of the bushing to position it. This positions the bushing and the motor end cover. During riveting, under the action of downward pressure, the second support rods 503 are forced to move downward along the first support rod 502 and compress the first spring 504 without affecting the normal downward movement of the bushing. After the bushing is riveted and unloaded, Under the elastic force of the first spring 504, the second support rod 503 and the third support rod 505 can be driven to return to their original position, facilitating the assembly of other components. The positioning disk 501 is provided with a driving part 506 for driving several first support rods 502 to move synchronously closer to or away from the center of the positioning disk 501. Before assembling the motor end cover and bushing, the driving part 506 drives several first support rods 502 to slide closer to the center of the positioning disk 501, thereby forcing several first support rods 502, several second support rods 503, and several third support rods 505 to return to their original position. The components move closer together to achieve inward shrinkage, reducing their limiting diameter and making the assembly of the motor end cover and bushing smoother and more convenient. After assembly, the drive unit 506 drives several first support rods 502 to move away from each other, thereby causing several first support rods 502, several second support rods 503, and several third support rods 505 to move away from each other, thus achieving outward expansion and limiting and positioning the motor end cover and bushing. After limiting and positioning, riveting is performed. After riveting is completed, it can shrink inward again, which not only facilitates material unloading but also facilitates the loading of other parts later. The stamped part 6 is set on the base 1 and is used to rivet the bushing onto the motor end cover. Preferably, the stamped part 6 is fixed in position and corresponds to one of the work station slots 3. When the motor end cover and the bushing are assembled and positioned, and rotated to move it below the stamped part 6, the stamped part 6 rivets the bushing onto the motor end cover. In this design, a number of first support rods 502, a number of second support rods 503, and a number of third support rods 505 constitute a positioning component 5. Since the number of first support rods 502 can slide horizontally, the positioning component 5 can retract inward before assembly to facilitate smoother assembly. After assembly, the positioning component 5 expands outward to position the assembled motor end cover and bushing. This combination of retraction and expansion is not only suitable for riveting parts of different sizes and specifications, improving versatility and flexibility, but also improves the smoothness and convenience of loading and unloading.

[0020] like Figure 6 The specific structure of the driving unit 506 of the present invention is disclosed. The driving unit 506 includes a vertical rod 5061 coaxially fixed to the bottom of the positioning disk 501. A sleeve 5062 is slidably sleeved on the vertical rod 5061. The sleeve 5062 is hinged to a plurality of first support rods 502 and connected by connecting rods 5063. A second spring 5064 sleeved on the vertical rod 5061 is installed between the sleeve 5062 and the positioning disk 501. In the initial state, under the elastic force of the second spring 5064, the sleeve 5062 is forced to slide downward, and the plurality of connecting rods 5063 respectively abut against the plurality of first support rods 502. Rod 502 is used to push the first support rod 502 outward, so that the first support rod 502 is in the outward expansion stage. During assembly, the sleeve 5062 is pushed upward to slide, thereby squeezing the second spring 5064, which forces several connecting rods 5063 to pull several first support rods 502 respectively, thereby forcing several first support rods 502 to retract inward, thus facilitating the assembly of the motor end cover and bushing. After the assembly is completed, the sleeve 5062 is loosened. Under the spring resistance of the second spring 5064, the first support rod 502 is forced to expand outward again. Since several first support rods 502 expand outward synchronously, the motor end cover and bushing can be effectively positioned.

[0021] like Figure 4As shown, a further technical solution for the drive unit 506 of the present invention is disclosed. A first arc-shaped plate 7 is fixed on the base 1, and a first limiting groove 8 is formed on the first arc-shaped plate 7. A crossbar 9 is fixed on the sleeve 5062, and a bearing wheel 10 is provided on the crossbar 9. The bearing wheel 10 is in rolling engagement with the first limiting groove 8. Preferably, the first arc-shaped plate 7 corresponds to three of the work stations (motor end cover assembly, shaft assembly, and blanking), and its notch corresponds to the riveting work station. The first limiting groove 8 includes a first... The arc-shaped groove on the arc plate 7 has inclined grooves connected to both ends. As the bearing plate 2 rotates intermittently, when the positioning component 5 is about to pass through three of the workstations, the crossbar 9 will first be inserted into one of the inclined grooves, and then slide into the arc-shaped groove. During the sliding process, it will force the sleeve 5062 to move automatically upward and compress the second spring 5064. As it slides into the arc-shaped groove, it forces the sleeve 5062 to maintain a constant height, thereby keeping several first support rods 502 in an inward-retracted state. As the bearing plate 2 continues to rotate, when it approaches the riveting station, the crossbar 9 will first slide from the arc groove to another inclined groove, and finally exit from the inclined groove. This utilizes the elastic force of the second spring 5064 to force the first support rod 502 to expand outwards, thus positioning the motor end cover and bushing before riveting and ensuring the riveting effect. By setting a bearing wheel 10 on the crossbar 9, the bearing wheel 10 rolls with the first limiting groove 8 to reduce the frictional resistance of the crossbar 9 and improve smoothness. The first arc plate 7... The cooperation of the first limiting groove 8, the crossbar 9, and the bearing wheel 10 provides a stationary track with controllable shape. As the bearing plate 2 rotates, the positioning component 5 can be automatically controlled to retract or expand. During the assembly loading and unloading stages, it is kept in the retracted state to facilitate loading and unloading. When riveting is about to be performed, it is switched to the expanded state to ensure the positioning of the motor end cover and the bushing, which facilitates riveting. This automatic control of the timing of the expansion and retraction of the positioning component 5 realizes automated linkage without the need for an additional power source.

[0022] like Figure 6 As shown, a further technical solution for the third support rod 505 of the present invention is disclosed. An adjustment groove 11 is provided through the second support rod 503, and a screw 12 is fixedly provided on the third support rod 505. The end of the screw 12 movably passes through the adjustment groove 11 and is threadedly fitted with a nut 13. Preferably, as shown... Figure 6 As shown, the adjustment groove 11 is opened in the transverse section of the second support rod 503. Through the cooperation of the screw 12 and the nut 13, the third support rod 505 can be adjusted horizontally and fixed, so that it can adapt to bushings with different inner diameters and further improve its versatility.

[0023] like Figure 8As shown, a further technical solution for the vertical rod 5061 of the present invention is disclosed. A U-shaped seat 14 is fixedly provided at the bottom end of the vertical rod 5061, and a roller 15 is rotatably provided on the U-shaped seat 14. The roller 15 rolls and overlaps with the base 1. By providing a U-shaped seat 14 and a roller 15 at the bottom end of the vertical rod 5061, the vertical rod 5061 can not only be used as a component of the driving part 506, but also as a support member. Since riveting has a certain pressure, the roller 15 rolls and overlaps with the base 1, which can also play a supporting and reinforcing role for the positioning member 5, so as to ensure that the riveting is carried out effectively and stably.

[0024] like Figure 7 As shown, a further technical solution for the vertical rod 5061 of the present invention is disclosed. A connecting cylinder 16 communicating with the work station groove 3 is constructed on the bearing plate 2. Several first lead screws 17 distributed in a ring are threaded through the connecting cylinder 16. The end of the first lead screw 17 is rotatably connected to a support block 18. Since the positioning part 5 can shrink inward and expand outward to adapt to different motor end covers and bushings, after the motor end cover is assembled, its riveting hole is a certain distance from the bearing plate 2, resulting in low support. By setting the first lead screw 17 and the support block 18, the first lead screw 17 is twisted to rotate and move, thereby driving the support block 18 to move closer to the riveting hole, so as to improve the support effect and ensure the riveting effect. Preferably, several support blocks 18 are staggered with several first support rods 502 respectively. Without affecting the normal shrinking and expanding of the positioning part 5, the support of the motor end cover can be maximized and its riveting effect can be improved.

[0025] like Figure 3 The specific structure of the driving component 4 of the present invention is disclosed. The driving component 4 includes a shaft 401 rotatably mounted on a base 1, a bearing disk 2 fixedly mounted on the shaft 401, a driven grooved wheel 402 fixedly mounted on the shaft 401, a servo motor 403 mounted on the base 1, and a transmission dial 404 that drives the driven grooved wheel 402 on the output shaft of the servo motor 403. Preferably, the driven grooved wheel 402 includes a disk body, and the outer surface of the disk body is provided with a plurality of arc-shaped grooves and a plurality of dial slots. The number of arc-shaped grooves and dial slots are four and they are staggered. The transmission dial 404 includes a notched disk. A support plate is provided at the notch of the notched disc, and a lever that slides with the slot is provided on the support plate. The servo motor 403 does work, and its output shaft drives the transmission dial 404 to rotate. When the transmission dial 404 rotates, the lever on it slides with the slot. After the transmission dial 404 rotates one revolution, the driven groove wheel 402 drives the shaft 401 to rotate ninety degrees, thereby realizing the effect of intermittent rotation. The rotation stops after ninety degrees. With the help of the four work station slots 3 and four positioning parts 5, the pauses during the intermittent rotation not only facilitate riveting at the riveting station, but also facilitate loading and unloading at the assembly station.

[0026] like Figure 2 andFigure 9 As shown, the specific structure of the stamping part 6 of the present invention is disclosed. The stamping part 6 includes a bracket 601 set on the base 1. An electric push rod 602 is set on the bracket 601. A stamping cylinder 603 is fixedly mounted on the piston end of the electric push rod 602. A plurality of clearance grooves 604 are opened through the stamping cylinder 603. When the assembled motor end cover and bushing move to the bottom of the bracket 601 along with the bearing plate 2, after the bearing plate 2 stops rotating, the electric push rod 602 does work, and its piston end drives the stamping cylinder 603 to move down. The stamping cylinder 603 abuts against the bushing, thereby riveting the bushing onto the motor end cover. The inner cavity of the stamping cylinder 603 itself cooperates with the clearance grooves 604 to ensure that the stamping cylinder 603 will not collide with the positioning part 5 during the pressing process, thus ensuring the smooth operation and the safety of the equipment.

[0027] like Figure 8 As shown, a further technical solution for stamping according to the present invention is disclosed. An adjusting frame 19 is provided on the base 1. A second lead screw 20 is threaded through the adjusting frame 19. The free end of the second lead screw 20 is rotatably connected to a second arc-shaped plate 21. A second limiting groove 22 is provided on the second arc-shaped plate 21. Preferably, the second arc-shaped plate 21 is located below the bracket 601 and corresponds exactly to the notch of the first arc-shaped plate 7. The bearing wheel 10 is rolled into the second limiting groove 22. After the motor end cover and the bushing are assembled, when the crossbar 9 is disengaged from the first limiting groove 8, under the elastic force of the second spring 5064, the positioning part 5 expands outward to position the motor end cover and the bushing. As the bearing plate 2 rotates, when entering the stamping station, the bearing wheel 10 on the crossbar 9 will first roll into the second limiting groove 22, thereby positioning the crossbar 9. Limiting the movement of the crossbar 9 and sleeve 5062 prevents them from moving vertically, ensuring that the positioning part 5 does not shrink inward or expand outward during the stamping process, thus ensuring the riveting quality. After riveting is completed, when the bearing plate 2 rotates, the bearing wheel 10 will automatically disengage from the second limiting groove 22. Due to the need to adapt to different specifications of positioning parts 5 (which may require different expansion strokes) or different sizes of workpieces, the height positions of the crossbar 9 and sleeve 5062 are different. By setting the adjusting frame 19, the second lead screw 20 is twisted to rotate and move, thereby driving the second arc plate 21 to rise and fall, thereby adjusting its height to adapt to the use of limiting motor end caps of different sizes. Preferably, the second arc plate 21 is fixed with a guide rod that moves through the adjusting frame 19 at the end to ensure that the second arc plate 21 can be stably raised and lowered.

[0028] like Figure 9As shown, a further technical solution of the present invention for the stamping cylinder 603 is disclosed. The stamping cylinder 603 is constructed with a convex ring, and a plurality of guide rods 23 slide through the convex ring. A pressure ring 24 is fixed at the bottom end of the plurality of guide rods 23. A third spring 25 sleeved on the guide rod 23 is installed between the pressure ring 24 and the convex ring. By setting the pressure ring 24, the elastic force of the third spring 25 is used to resist the contact, so that during stamping, the pressure ring 24 first contacts and presses the motor end cover to stabilize it. Subsequently, the stamping cylinder 603 continues to move downward against the force of the third spring 25 to complete the riveting of the bushing independently. This process can effectively prevent vibration or micro-displacement caused by the end cover not being pressed tightly during riveting, and greatly improve the coaxiality of riveting and the quality of finished products.

[0029] The workflow of this invention is as follows: The servo motor 403 performs work, driving the bearing plate 2 to rotate intermittently via the transmission dial 404 and the driven grooved wheel 402. The positioning component 5 is used for assembling and positioning the motor end cover and bushing. The four workstation slots 3, rotating clockwise, serve as the unloading station, motor end cover assembly station, bushing assembly station, and riveting station, respectively. During riveting, as the bearing plate 2 rotates, the crossbar 9 slides into the first limiting slot 8. This forces the sleeve 5062 to move automatically upwards, compressing the second spring 5064, and causing several connecting rods 5063 to pull several first support rods 502, thereby forcing the positioning component 5 to retract. In this state, the three positioning components 5 corresponding to the unloading station, motor end cover assembly station, and bushing assembly station are all in a retracted state. First, the motor end cover is assembled at the motor end cover assembly station. After rotating 90 degrees, the shaft sleeve is assembled at the shaft sleeve assembly station. As it rotates 90 degrees again, before entering the riveting station, the crossbar 9 disengages from the first limiting groove 8, thereby forcing the positioning part 5 to expand outward, thus positioning the motor end cover and the shaft sleeve. At the same time, as the bearing plate 2 rotates into the riveting station, the crossbar 9 slides into the second limiting groove 22, thereby limiting the positioning part 5 itself and preventing it from shrinking inward or expanding outward. Then, the stamping part 6 begins to stamp, the electric push rod 602 does work, and its piston end drives the stamping cylinder 603 to move down. The pressure ring 24 first contacts and presses the motor end cover to stabilize it. Subsequently, the stamping cylinder 603 continues to move down against the force of the third spring 25 to complete the riveting of the shaft sleeve. After the riveting is completed, as the bearing plate 2 rotates, the crossbar 9 disengages from the second limiting groove 22 and enters the unloading station. The positioning part 5 shrinks inward again, thereby unloading the riveted workpiece.

[0030] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bushing riveting device for machining motor end caps, characterized in that, include: A base (1) on which a bearing plate (2) is rotatably mounted, and a number of work station slots (3) arranged in a ring are provided on the bearing plate (2). A driving component (4) for driving the bearing plate (2) to rotate intermittently is provided on the base (1). A number of positioning components (5) are respectively set in a number of work station slots (3). The positioning component (5) includes a positioning disk (501) fixed in the work station slot (3). A number of first support rods (502) are horizontally slidably arranged on the positioning disk (501). A second support rod (503) is movably sleeved on the first support rod (502). A first spring (504) is connected between the first support rod (502) and the second support rod (503). A third support rod (505) is arranged on the second support rod (503). A driving part (506) is provided on the positioning disk (501) for driving the number of first support rods (502) to move synchronously closer to or synchronously away from the center of the positioning disk (501). A stamped part (6) is provided on the base (1) for riveting the bushing to the motor end cover.

2. The bushing riveting device for machining motor end caps according to claim 1, characterized in that, The drive unit (506) includes a vertical rod (5061) coaxially fixed to the bottom of the positioning disk (501), a sleeve (5062) slidably sleeved on the vertical rod (5061), the sleeve (5062) is hinged to a plurality of first support rods (502) with connecting rods (5063), and a second spring (5064) sleeved on the vertical rod (5061) is installed between the sleeve (5062) and the positioning disk (501).

3. The bushing riveting device for machining motor end caps according to claim 2, characterized in that, A first arc plate (7) is fixed on the base (1), and a first limiting groove (8) is opened on the first arc plate (7). A cross bar (9) is fixed on the sleeve (5062), and a bearing wheel (10) is provided on the cross bar (9). The bearing wheel (10) is in rolling engagement with the first limiting groove (8).

4. The bushing riveting device for machining motor end caps according to claim 1, characterized in that, The second support rod (503) has an adjustment groove (11) through it, and the third support rod (505) has a screw (12) fixed on it. The end of the screw (12) moves through the adjustment groove (11) and is threaded with a nut (13).

5. The bushing riveting device for machining motor end caps according to claim 2, characterized in that, The bottom end of the vertical rod (5061) is fixed with a U-shaped seat (14), and a roller (15) is rotatably mounted on the U-shaped seat (14). The roller (15) rolls and overlaps with the base (1).

6. The bushing riveting device for machining motor end caps according to claim 1, characterized in that, The bearing plate (2) is equipped with a connecting cylinder (16) that communicates with the work station slot (3). Several first lead screws (17) arranged in a ring are threaded through the connecting cylinder (16). The end of the first lead screw (17) is rotatably connected to a support block (18).

7. The bushing riveting device for machining motor end caps according to claim 1, characterized in that, The driving component (4) includes a shaft (401) rotatably mounted on a base (1), a bearing plate (2) fixed on the shaft (401), a driven grooved wheel (402) fixed on the shaft (401), a servo motor (403) mounted on the base (1), and a transmission dial (404) fixed on the output shaft of the servo motor (403) that is in transmission cooperation with the driven grooved wheel (402).

8. The bushing riveting device for machining motor end caps according to claim 1, characterized in that, The stamping part (6) includes a bracket (601) set on the base (1), an electric push rod (602) is provided on the bracket (601), a stamping cylinder (603) is fixedly provided on the piston end of the electric push rod (602), and a plurality of clearance grooves (604) are provided through the stamping cylinder (603).

9. The bushing riveting device for machining motor end caps according to claim 1, characterized in that, An adjustment frame (19) is provided on the base (1). A second lead screw (20) is threaded through the adjustment frame (19). A second arc plate (21) is rotatably connected to the free end of the second lead screw (20). A second limiting groove (22) is provided on the second arc plate (21).

10. The bushing riveting device for machining motor end caps according to claim 8, characterized in that, The stamping cylinder (603) has a convex ring, and several guide rods (23) slide through the convex ring. A pressure ring (24) is fixed at the bottom end of the several guide rods (23). A third spring (25) sleeved on the guide rod (23) is installed between the pressure ring (24) and the convex ring.

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