Shell bearing feeding and assembly device and method for permanent magnet synchronous servo motor production

Abstract

The present invention discloses a housing bearing loading and assembly device and method for the production of permanent magnet synchronous servo motors, and the present invention relates to the technical field of motor assembly. By setting a bearing mechanism, its internal heating component can heat the inner wall of the bearing installation groove immediately after the housing end cover is placed inside the rotating seat, and the inner wall of the bearing installation groove is expanded by the heat by utilizing the principle of thermal expansion and contraction, thereby increasing the assembly gap between the bearing and the housing end cover, thereby reducing the friction between the inner wall of the bearing installation groove and the outer wall of the bearing, and the bearing can be more easily installed in the bearing installation groove, avoiding the situation where the bearing or the bearing installation groove is damaged due to excessive friction between the outer wall of the bearing and the inner wall of the bearing installation groove, thereby ensuring the stability of the operation of the bearing after installation; by uniformly heating the bearing installation groove, it is ensured that the inner diameter of the bearing installation groove changes uniformly and stably under the action of thermal radiation, thereby improving the assembly accuracy between the bearing and the housing end cover.

Description

Technical Field

[0001] The invention relates to the technical field of motor assembly, in particular to a housing bearing feeding and assembly device and method for producing a permanent magnet synchronous servo motor. Background Art

[0002] The production of permanent magnet synchronous servo motors includes the steps of stator assembly, rotor assembly, motor assembly, test inspection, packaging and warehousing;

[0003] Among them, the motor assembly step includes the step of assembling the housing end cover and the bearing. This step is related to whether the subsequent rotor can run stably and is one of the key steps in the production of permanent magnet synchronous servo motors.

[0004] And because the bearing needs to withstand axial force or radial force to ensure that the bearing does not fall off or produce excessive clearance due to force during operation, and to reduce the axial displacement and vibration of the bearing, an interference fit is usually adopted between the bearing and the end cover, that is, the outer diameter of the bearing is slightly larger than the inner diameter of the mounting groove. During the assembly process, a press-fitting device is required to force the bearing into the mounting groove of the end cover.

[0005] A motor assembly mechanism disclosed in the patent application with reference publication number CN116275973B, when the motor assembly mechanism is in operation, the vibration plate supplies the motor bearing to the bearing assembly through the feeding channel, before the bearing assembly moves to the bottom of the blocking assembly, the motor bearing is first blocked in the feeding channel by the blocking assembly to prevent the motor bearing from falling, the bearing assembly moves to the bottom of the blocking assembly and receives the motor bearing, and at the same time the blocking assembly releases the motor bearing, the bearing assembly transports the motor bearing after the blocking assembly is released to the bottom of the clamping assembly, and the pressure head assembly presses down the motor housing clamped on the clamping assembly, so that the motor housing cover is arranged on the top periphery of the bearing assembly on which the motor bearing is installed, thereby completing the assembly process of the motor bearing being installed in the motor housing. The motor assembly mechanism can improve the assembly efficiency of the motor bearing and the motor housing, and improve the reliability of the assembly of the motor bearing and the motor housing.

[0006] At present, when motor production and assembly equipment assembles end covers and bearings, since interference fit is usually adopted between the bearings and the end covers, it is necessary to force the bearings into the mounting grooves by means of press-fitting equipment. However, the method of forcing the bearings into the mounting grooves by means of press-fitting equipment is prone to bearing damage and deformation of the mounting grooves. Bearing damage or deformation of the mounting grooves will cause the motor to generate vibration and noise during operation, thereby reducing its operating accuracy, which will not only affect the stability of the motor, but also generate more heat due to increased friction, causing the motor to overheat and burn. For example, a motor assembly mechanism with reference to publication number CN116275973B is disclosed. The patent application uses a pressure head assembly to press down the motor housing and cover the top periphery of the motor bearing, and an interference fit is adopted between the motor bearing and the motor housing, so that the motor bearing or the mounting groove in the motor housing is easily damaged during the assembly process, thereby causing the bearing to be difficult to operate stably after installation, thereby increasing the friction between the motor shaft and the bearing, and reducing the service life of the motor.

[0007] Therefore, the present invention proposes a housing bearing loading and assembly device and method for producing a permanent magnet synchronous servo motor to solve the above problems. Summary of the invention

[0008] In view of the deficiencies in the prior art, the present invention provides a housing bearing loading and assembly device and method for the production of permanent magnet synchronous servo motors, which solves the problem that when the current motor production and assembly equipment assembles the end cover and the bearing, the bearing is forcibly pressed into the installation groove by a pressing device, which easily leads to bearing damage and installation groove deformation. Bearing damage or installation groove deformation will cause the motor to vibrate and make noise during operation, reducing its operating accuracy, which will not only affect the stability of the motor, but also generate more heat due to increased friction, causing the motor to overheat and burn.

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: a housing bearing loading and assembly device for permanent magnet synchronous servo motor production, comprising a lower inspection table, an upper inspection table fixedly arranged on the top of the lower inspection table and a housing end cover, and also comprising:

[0010] A turntable mechanism is rotatably arranged on the top of the lower inspection table, and is used to drive the housing end cover to be assembled to perform circular motion and transmit the required electrical energy during the assembly process;

[0011] Multiple bearing mechanisms are evenly arranged on the top of the turntable mechanism, used to bear the housing end cover and define its position, and heat the preset position of the housing end cover before assembly, and use the principle of thermal expansion and contraction to increase the assembly gap between the housing end cover and the bearing;

[0012] The arc-shaped rack is fixedly arranged on one side of the top of the lower inspection platform, and is used to drive the bearing mechanism to rotate in a circle, thereby assisting the bearing mechanism to complete the operation of uniformly heating the assembly area of ​​the shell end cover.

[0013] Furthermore, it also includes:

[0014] A bearing conveying assembly is arranged on the back side of the lower inspection platform and is used to convey the bearing to be assembled to the interior of the upper inspection platform. The bearing conveying assembly includes a loading tray and a conveying frame fixedly arranged at the output end of the loading tray;

[0015] A manipulator is fixedly arranged on the inner wall of the upper inspection platform, and is used to clamp the bearing input by the bearing conveying assembly and place the bearing on a bearing mechanism close to the position of the manipulator;

[0016] The press-fitting assembly is arranged on one side of the top of the lower inspection platform and is used to press the bearing into the assembly area of ​​the housing end cover. It includes a bracket fixedly arranged on one side of the top of the lower inspection platform and an electric push rod fixedly arranged on the top of the bracket. The output shaft of the electric push rod slides through the bracket and is fixedly provided with a pressure plate.

[0017] Furthermore, the turntable mechanism comprises:

[0018] A turntable, arranged on the top of the lower inspection platform, is used to provide a bearing platform for the installation of multiple bearing mechanisms;

[0019] An electric energy transmission component is used to transmit electric energy to multiple load-bearing mechanisms respectively to ensure the normal operation of the load-bearing mechanisms. The electric energy transmission component includes a No. 1 conductive column detachably arranged on the top of the lower detection platform. The No. 1 conductive column is electrically connected to multiple wires through brushes. The multiple wires are electrically connected to the load-bearing mechanisms at corresponding positions respectively;

[0020] The servo motor is fixedly arranged on one side of the top of the lower detection platform through a motor bracket, and is used for driving the turntable to perform intermittent circular motion.

[0021] Furthermore, the bearing mechanism comprises a bearing seat detachably arranged on the top of the rotating disk, and a rotating disk assembly is arranged inside the bearing seat;

[0022] The rotating disk assembly includes a rotating seat inside a rotating bearing seat, a gear ring meshing with an arc-shaped rack is fixedly arranged on the top of the bearing seat, and an avoidance through hole is also opened on the top of the rotating seat. A heating component for heating the bearing assembly area of ​​the shell end cover is jointly arranged inside the bearing seat and the rotating seat.

[0023] Furthermore, the heating component includes a flange which is detachably mounted at the bottom of the turntable mechanism by bolts, a No. 2 conductive column is fixedly passed through the inside of the flange, a branching plate is detachably mounted on the outer wall of the No. 2 conductive column, the branching plate and the No. 2 conductive column are electrically connected, and a plurality of adjustment grooves are evenly arranged on the top of the branching plate, a circular groove is also arranged at the top center of the branching plate, a conductive metal sheet is fixedly arranged on the inner wall of each of the adjustment grooves, a heating actuator component for heating the assembly area of ​​the shell end cover is arranged inside the adjustment groove, and a position adjustment component for adjusting the position of the heating actuator component is also arranged inside the adjustment groove.

[0024] Furthermore, the position adjustment component includes a screw rotatably arranged inside an adjustment groove, one end of the screw rotates through the screw and extends to the inside of the bevel gear, and a bevel gear is fixedly arranged at one end of the screw located inside the circular groove, and a bevel gear is rotatably arranged inside the circular groove and meshed with the bevel gear through a rotating shaft, and an adjustment knob for driving the bevel gear to rotate is fixedly arranged on the top of the bevel gear.

[0025] Furthermore, the heating execution component includes a slider slidably arranged inside the adjustment groove, a conductive metal sleeve is fixedly sleeved on the outer wall of the slider, the slider is threadedly sleeved on the outer wall of the screw, and a heating wire is also fixedly arranged on the end of the slider away from the circular groove.

[0026] Furthermore, the housing end cover comprises an end cover body, a bearing mounting groove for assembling the bearing is provided at the top center position of the end cover body, and a motor shaft hole is provided at the bottom center position of the bearing mounting groove.

[0027] Furthermore, a controller for controlling the operation of all electrical equipment is fixedly arranged on the outer wall of the lower detection platform.

[0028] The present invention also discloses a material loading and assembling method of a housing bearing material loading and assembling device for producing a permanent magnet synchronous servo motor, which is used for a housing bearing material loading and assembling device for producing a permanent magnet synchronous servo motor. The method comprises the following steps:

[0029] Step 1: First, the turntable mechanism rotates to a preset angle according to a preset program and then stops rotating. Then, the shell end cap to be assembled is placed in the supporting mechanism at the corresponding position. The supporting mechanism immediately heats the stably placed shell end cap.

[0030] Step 2, after the intermittent time ends, the turntable mechanism drives the bearing mechanism equipped with the shell end cover to continue to rotate the preset angle. During the rotation, the arc-shaped rack and the bearing mechanism meet and drive the bearing mechanism to rotate multiple circles. At this time, the shell end cover has completed the preset heating time;

[0031] Step 3. Then, the turntable mechanism continues to drive the shell end cover that has been heated to rotate again to the preset angle, and the bearing is placed in the assembly position inside the shell end cover to complete the pre-installation work. Then the turntable mechanism drives the shell end cover and the bearing to rotate to the assembly area to complete the assembly of the bearing and the shell end cover.

[0032] The present invention provides a housing bearing loading and assembly device and method for the production of permanent magnet synchronous servo motors. Compared with the prior art, it has the following beneficial effects:

[0033] 1. A housing bearing loading and assembly device and method for the production of permanent magnet synchronous servo motors. By setting a bearing mechanism, an internal heating component can heat the inner wall of the bearing mounting groove immediately after the housing end cover is placed inside the rotating seat. The principle of thermal expansion and contraction is used to make the inner wall of the bearing mounting groove expand due to heat, thereby increasing the inner diameter of the bearing mounting seat, thereby increasing the assembly gap between the bearing and the housing end cover, thereby reducing the friction between the inner wall of the bearing mounting groove and the outer wall of the bearing, and the bearing can be more easily installed in the bearing mounting groove, avoiding damage to the bearing or the bearing mounting groove due to excessive friction between the outer wall of the bearing and the inner wall of the bearing mounting groove, thereby ensuring the stability of the operation of the bearing after installation and extending the service life of the motor.

[0034] 2. A housing bearing loading and assembly device and method for the production of permanent magnet synchronous servo motors, by providing an arc-shaped rack and a gear ring, can utilize the arc-shaped rack to drive the gear ring to rotate multiple circles when the gear ring and the arc-shaped rack meet, so that the heat generated by the heating wires at multiple positions can be evenly radiated at each position of the inner wall of the housing end cover bearing mounting groove, thereby achieving the purpose of uniform heating of the bearing mounting groove, ensuring that the inner diameter of the bearing mounting groove changes evenly and stably under the action of thermal radiation, thereby improving the assembly accuracy between the bearing and the housing end cover.

[0035] 3. A housing bearing loading and assembly device and method for the production of permanent magnet synchronous servo motors, which, by setting a position adjustment component, can drive sliders at multiple positions to synchronously approach or move away from each other by manually rotating a knob, thereby changing the distance between the multiple arc-shaped heating wires and the inner wall of the bearing mounting groove, and then changing the radiation intensity of the heating wires to the inner wall of the bearing mounting hole. In addition, when the motor shaft aperture on the housing end cover changes, the position adjustment component can be used to make the outer diameter of the non-closed annular structure composed of multiple heating wires adapt to the inner diameter of the motor shaft hole according to the change of the motor shaft aperture, thereby ensuring that the housing end cover can be smoothly mounted on the outside of the heating component, thereby achieving the effect of heating housing end covers of various models.

[0036] 4. A device and method for loading and assembling housing bearings for the production of permanent magnet synchronous servo motors. By setting a press-fitting assembly, a manipulator, a turntable mechanism and multiple supporting mechanisms on the turntable mechanism, the manipulator can automatically clamp the motor bearings to the end covers on the supporting mechanisms during the rotation of the turntable mechanism to complete the pre-installation of the motor bearings and the end covers, and can use the press-fitting assembly to achieve the final assembly of the motor bearings and the end covers. Compared with the traditional method of assembling a single end cover and a single bearing before performing the next group of assembly work, the present invention can continuously assemble the bearings and the housing end covers, thereby improving the assembly efficiency of the bearings and the housing end covers and achieving batch assembly of the bearings and the housing end covers.

[0037] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the first overall three-dimensional structure of the present invention;

[0039] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure of part A;

[0040] Figure 3 It is a schematic diagram of the second overall three-dimensional structure of the present invention;

[0041] Figure 4 It is a schematic diagram of the third overall three-dimensional structure of the present invention;

[0042] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure of part B in FIG.

[0043] Figure 6 It is a structural schematic diagram of the turntable mechanism, the bearing mechanism and the arc-shaped rack in the first assembly state of the present invention;

[0044] Figure 7 It is a schematic structural diagram of the turntable mechanism, the bearing mechanism and the arc-shaped rack in the second assembly state of the present invention;

[0045] Figure 8 It is a schematic diagram of the structure of the turntable mechanism, the bearing mechanism and the arc-shaped rack in the exploded state of the present invention;

[0046] Fig. 9 It is a schematic structural diagram of the assembled state of the housing end cover and the bearing mechanism of the present invention;

[0047] Fig.10It is a schematic diagram of the overall structure of the carrying mechanism of the present invention;

[0048] Fig.11 It is a schematic cross-sectional structure diagram of the carrying mechanism of the present invention;

[0049] Fig.12 It is a schematic diagram of the structure of the bearing mechanism of the present invention in an exploded state;

[0050] Fig.13 This is a schematic diagram of the structure of the heating component of the present invention in a disassembled state;

[0051] Fig.14 For the present invention Fig.13 A schematic diagram of the enlarged structure of part C in FIG.

[0052] Fig.15 This is a schematic diagram of the top structure of the heating assembly of the present invention;

[0053] Fig.16 For the present invention Fig.15 The D part in the figure is an enlarged structural diagram;

[0054] Fig.17 It is a schematic diagram of the bottom structure of the distribution board of the present invention.

[0055] In the figure: 1. lower inspection table; 2. upper inspection table; 3. turntable mechanism; 31. turntable; 32. No. 1 conductive column; 33. brush; 34. wire; 4. bearing mechanism; 41. bearing seat; 42. rotating seat; 43. gear ring; 44. avoidance through hole; 45. heating component; 451. flange; 452. No. 2 conductive column; 453. distribution board; 454. adjustment slot; 455. circular slot; 456. bevel gear disc; 457. adjustment knob; 458. screw; 459. bevel gear; 4510. slider; 4511. heating wire; 5. arc rack; 6. loading tray; 7. conveyor frame; 8. manipulator; 9. electric push rod; 10. pressure plate; 11. shell end cover; 111. end cover body; 112. bearing mounting groove. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] The present invention provides two technical solutions: a housing bearing feeding and assembly device for the production of a permanent magnet synchronous servo motor, specifically including the following embodiments:

[0058] like Figure 1-Figure 9The first embodiment is shown: a housing bearing loading and assembly device for permanent magnet synchronous servo motor production, comprising a lower inspection table 1, an upper inspection table 2 fixedly arranged on the top of the lower inspection table 1 and a housing end cover 11, and further comprising:

[0059] The turntable mechanism 3 is rotatably arranged on the top of the lower inspection platform 1, and is used to drive the housing end cover 11 to be assembled to perform circular motion and transmit the required electrical energy during the assembly process;

[0060] A plurality of bearing mechanisms 4 are evenly arranged on the top of the turntable mechanism 3, and are used to bear the housing end cover 11 and define its position, and heat the housing end cover 11 at a preset position before assembly, and increase the assembly gap between the housing end cover 11 and the bearing by utilizing the principle of thermal expansion and contraction;

[0061] The arc-shaped rack 5 is fixedly arranged on one side of the top of the lower inspection platform 1 and is used to drive the supporting mechanism 4 to rotate in a circle, thereby assisting the supporting mechanism 4 to complete the operation of uniformly heating the assembly area of ​​the housing end cover 11 .

[0062] Also includes:

[0063] The bearing conveying assembly is arranged on the back side of the lower inspection platform 1, and is used to convey the bearing to be assembled to the interior of the upper inspection platform 2. The bearing conveying assembly includes a loading tray 6 and a conveying frame 7 fixedly arranged at the output end of the loading tray 6; the loading tray 6 is an existing known technology, and its structure and operation principle are not described in detail here. The loading tray 6 can place multiple bearings on the conveying frame 7 in a linear arrangement, and gradually push the multiple bearings to move to the interior of the upper inspection platform 2. A bearing conveying channel is opened on the back of the upper inspection platform 2, and the conveying frame 7 passes through the bearing conveying channel and extends to the interior of the upper inspection platform 2;

[0064] The manipulator 8 is fixedly arranged on the inner wall of the upper inspection platform 2, and is used to clamp the bearing input by the bearing conveying assembly, and place the bearing on the carrying mechanism 4 near the position of the manipulator 8; the manipulator 8 can move in the horizontal and longitudinal directions according to a preset program, and after approaching the conveying frame 7 located inside the upper inspection platform 2, it clamps the bearing located on the top of its conveying frame 7, and immediately approaches the position of the turntable mechanism 3 after clamping the bearing, and then places the clamped bearing on the top of the bearing installation groove 112 located directly below it;

[0065] The press-fitting assembly is arranged on one side of the top of the lower inspection platform 1 and is used to press-fit the bearing into the assembly area of ​​the housing end cover 11. It includes a bracket fixedly arranged on one side of the top of the lower inspection platform 1 and an electric push rod 9 fixedly arranged on the top of the bracket. The output shaft of the electric push rod 9 slides through the bracket and is fixedly provided with a pressing plate 10. Every time the turntable mechanism 3 rotates ninety degrees, a top center area of ​​a bearing mechanism 4 is directly opposite to the bottom of the pressing plate 10, and the bottom coverage area of ​​the pressing plate 10 is larger than the bearing installation groove 112, so as to ensure that the pressing plate 10 can completely cover the bearing and achieve a stable press-fitting effect.

[0066] The turntable mechanism 3 comprises:

[0067] The turntable 31 is arranged on the top of the lower detection platform 1, and is used to provide a bearing platform for the installation of multiple bearing mechanisms 4; a rotating seat is also fixedly arranged at the bottom of the turntable 31, and the interior of the rotating seat is a hollow structure, which can cover multiple wires 34, brushes 33, and a No. 1 conductive column 32 inside. The bottom end of the No. 1 conductive column 32 rotates through the rotating seat and is connected to the power supply inside the lower detection platform 1. Since the connection method between the No. 1 conductive column 32, the brush 33 and the power supply is an existing known technology, it will not be repeated here; the rotating seat is rotatably arranged on the top of the lower detection platform 1, and a gear ring is also fixedly sleeved on the outer wall of the rotating seat;

[0068] The power transmission component is used to transmit power to multiple supporting mechanisms 4 respectively to ensure the normal operation of the supporting mechanisms 4. The power transmission component includes a No. 1 conductive column 32 which is detachably arranged on the top of the lower detection platform 1. The No. 1 conductive column 32 is electrically connected to multiple wires 34 through brushes 33. The multiple wires 34 are electrically connected to the supporting mechanisms 4 at corresponding positions respectively; the brush 33 is rotatably sleeved on the outer wall of the No. 1 conductive column 32 and is fixedly connected through a mounting frame and a turntable 31;

[0069] The servo motor is fixedly mounted on one side of the top of the lower inspection platform 1 through a motor bracket, and is used to drive the turntable 31 to perform intermittent circular motion; a gear is also fixedly sleeved on the output shaft of the servo motor, and the gear is meshed with the gear ring on the rotating seat.

[0070] The housing end cover 11 comprises an end cover body 111 , a bearing installation groove 112 for assembling a bearing is provided at the top center of the end cover body 111 , and a motor shaft hole is provided at the bottom center of the bearing installation groove 112 .

[0071] A controller for controlling the operation of all electrical equipment is also fixedly arranged on the outer wall of the lower testing platform 1 .

[0072] like Figure 11-Figure 17A second embodiment is shown, which differs from the first embodiment in that: a housing bearing loading and assembly device for permanent magnet synchronous servo motor production, the bearing mechanism 4 includes a bearing seat 41 detachably arranged on the top of the rotating disk 31, and a rotating disk assembly is arranged inside the bearing seat 41;

[0073] The rotating disk assembly includes a rotating seat 42 inside a rotating bearing seat 41, a gear ring 43 meshing with the arc-shaped rack 5 is fixedly arranged on the top of the bearing seat 41, and an avoidance hole 44 is also opened on the top of the rotating seat 42, and a heating component 45 for heating the bearing assembly area of ​​the shell end cover 11 is jointly arranged inside the bearing seat 41 and the rotating seat 42.

[0074] The heating assembly 45 includes a flange 451 which is detachably mounted on the bottom of the turntable mechanism 3 by bolts, a No. 2 conductive column 452 is fixedly penetrated inside the flange 451, a wire splitter plate 453 is detachably mounted on the outer wall of the No. 2 conductive column 452, the wire splitter plate 453 and the No. 2 conductive column 452 are electrically connected, and a plurality of adjustment slots 454 are evenly arranged on the top of the wire splitter plate 453, a circular slot 455 is also arranged at the center of the top of the wire splitter plate 453, and a conductive metal sheet is fixedly arranged on the inner wall of each adjustment slot 454, and the adjustment slot 45 4 is provided with a heating actuator for heating the assembly area of ​​the housing end cover 11, and a position adjustment component for adjusting the position of the heating actuator is also provided inside the adjustment slot 454; the second conductive column 452 is electrically connected to the wire 34 at the corresponding position through a cable, and the electric energy is transmitted to the distribution board 453 through the second conductive column 452, and then transmitted to the slider 4510 at the corresponding position through the conductive metal sheets on the inner wall of the multiple adjustment slots 454 and the conductive metal sleeves at the corresponding position, and heat can be generated when the current flows through the heating wire 4511;

[0075] The position adjustment component includes a screw 458 rotatably arranged inside the adjustment groove 454, one end of the screw 458 rotates through the screw 458 and extends to the inside of the bevel gear 459, and a bevel gear 459 is fixedly arranged at one end of the screw 458 located inside the circular groove 455, and a bevel gear 456 meshingly connected to the bevel gear 459 is rotatably arranged inside the circular groove 455, and an adjustment knob 457 for driving the bevel gear 459 to rotate is fixedly arranged at the top of the bevel gear 456.

[0076] The heating actuator includes a slider 4510 slidably disposed inside the adjustment groove 454, a conductive metal sleeve is fixedly sleeved on the outer wall of the slider 4510, the slider 4510 is threadedly sleeved on the outer wall of the screw 458, and a heating wire 4511 is fixedly disposed on the end of the slider 4510 away from the circular groove 455. The heating wire 4511 is an arc-shaped structure that can fit the curvature of the inner wall of the bearing mounting groove 112; the outer diameter of the non-closed annular structure formed by multiple heating wires 4511 is slightly smaller than the inner diameter of the motor shaft hole at the center of the end cover body 111, so as to ensure that the outer shell end cover 11 can pass through the non-closed annular structure formed by multiple heating wires 4511 and be placed inside the rotating seat 42, and after the outer shell end cover 11 is stably placed in the rotating seat 42, the heating wire 4511 and the inner wall of the bearing mounting groove 112 are opposite;

[0077] The embodiment of the present invention further provides a feeding and assembling method of a housing bearing feeding and assembling device for producing a permanent magnet synchronous servo motor, which is used for a housing bearing feeding and assembling device for producing a permanent magnet synchronous servo motor. The method comprises the following steps:

[0078] Step 1, first the turntable mechanism 3 rotates to a preset angle according to a preset program and then stops rotating, and then the shell end cover 11 to be assembled is placed in the supporting mechanism 4 at the corresponding position, and the supporting mechanism 4 immediately heats the stably placed shell end cover 11; the specific process is: first, the controller is used to control the switch of the circuit where the heating wire 4511 is located, and the power supply inside the lower detection table 1 transmits the current to the multiple wires 34 through the wires and the No. 1 conductive column 32 and the brush 33. Since the multiple wires 34 are respectively electrically connected to the heating components 45 in the supporting mechanism 4 at the corresponding positions, the current is transmitted to the branching plate 453 through the No. 2 conductive column 452. The branching plate 453 uses the wire metal sheet set on the inner wall of the adjustment slot 454 and the conductive metal sleeve set on the outer wall of the slider 4510 to transmit the current to the heating wire 4511, and the heating wire 4511 generates high temperature after being energized;

[0079] Next, the servo motor is started by the controller. Since the gear on the output shaft of the servo motor is meshed with the gear ring on the rotating seat, the turntable mechanism 3 rotates ninety degrees according to the preset program and rests for five seconds. The five-second rest time is used for the staff to place the housing end cover 11 in the rotating seat 42. When placing the housing end cover 11, the avoidance through hole 44 and the top of the heating component 45 need to be directly opposite to each other to avoid the inner wall of the avoidance through hole 44 from scratching the heating component 45. Since the plurality of electric heating wires 4511 and the inner wall of the bearing mounting groove 112 are arranged relative to each other, the high temperature heat generated by the electric heating wires 4511 can heat the inner wall of the bearing mounting groove 112. According to the principle of thermal expansion and contraction, the inner wall of the bearing mounting groove 112 will be slightly deformed after being heated, that is, the inner diameter of the bearing mounting groove 112 becomes larger.

[0080] Step 2, after the intermittent time is over, the turntable mechanism 3 drives the supporting mechanism 4 equipped with the shell end cover 11 to continue to rotate by a preset angle. During the rotation, the arc-shaped rack 5 and the supporting mechanism 4 meet and drive the supporting mechanism 4 to rotate for multiple turns. At this time, the shell end cover 11 has completed the preset heating time; the specific process is: after the turntable 31 rotates ninety degrees, the supporting mechanism 4 with the shell end cover 11 placed thereon and the arc-shaped rack 5 meet, and the arc-shaped rack 5 and the gear ring 43 complete the meshing connection. Since the gear ring 43 is driven by the arc-shaped rack 5 to rotate for several turns, the shell end cover 11 located inside the rotating seat 42 rotates synchronously with it, so the inner wall of the bearing mounting groove 112 is evenly heated by multiple sliders 4510;

[0081] When the heated housing end cover 11 continues to rotate to the bottom of the manipulator 8, the manipulator 8 clamps the bearing to be assembled which is transported from the loading tray 6 to the conveying frame 7 according to the preset program, and then stably places the bearing at the top center position of the bearing installation groove 112;

[0082] Next, the turntable 31 continues to drive the bearing mechanism 4 in which the bearing and the housing end cover 11 have been pre-installed to rotate to the bottom of the electric push rod 9. The electric push rod 9 drives the pressing plate 10 to move down to a preset height at a low speed according to a preset program. The bottom end of the pressing plate 10 gradually contacts the top center position of the bearing, and the bearing gradually enters the bearing installation groove 112 under the downward pressure of the pressing plate 10.

[0083] Next, the turntable 31 drives the assembled bearing and housing end cover 11 to rotate to the front of the upper inspection table 2. The staff takes out the assembled bearing and housing end cover 11 and puts them aside to cool. After the bearing mounting groove 112 area cools down, its inner diameter will decrease according to the principle of thermal expansion and contraction, and the connection between the bearing and the bearing mounting groove 112 will be more stable.

[0084] Step 3. Then, the turntable mechanism 3 continues to drive the shell end cover 11 that has been heated to rotate again by a preset angle, and the bearing is placed in the assembly position inside the shell end cover 11 to complete the pre-installation work. Then the turntable mechanism 3 drives the shell end cover 11 and the bearing to rotate to the assembly area to complete the assembly of the bearing and the shell end cover 11.

[0085] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0086] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A housing bearing loading and assembly device for the production of a permanent magnet synchronous servo motor, comprising a lower inspection platform (1), an upper inspection platform (2) fixedly arranged on the top of the lower inspection platform (1), and a housing end cover (11), characterized in that: Also includes: A turntable mechanism (3) is rotatably arranged on the top of the lower inspection platform (1) and is used to drive the housing end cover (11) to be assembled to perform circular motion and transmit the required electrical energy during the assembly process; A plurality of bearing mechanisms (4) are evenly arranged on the top of the turntable mechanism (3) and are used to bear the housing end cover (11) and define its position, and to heat the housing end cover (11) at a preset position before assembly, thereby increasing the assembly clearance between the housing end cover (11) and the bearing by utilizing the principle of thermal expansion and contraction; An arc-shaped rack (5) is fixedly arranged on one side of the top of the lower inspection platform (1) and is used to drive the support mechanism (4) to rotate in a circular motion, thereby assisting the support mechanism (4) to complete the operation of uniformly heating the assembly area of ​​the housing end cover (11); The bearing mechanism (4) comprises a bearing seat (41), a rotating disk assembly is arranged inside the bearing seat (41), the rotating disk assembly comprises a rotating seat (42) rotating inside the bearing seat (41), and a heating assembly (45) for heating the bearing assembly area of ​​the housing end cover (11) is arranged inside the bearing seat (41) and the rotating seat (42); The heating component (45) comprises a flange (451) which is detachably mounted on the bottom of the turntable mechanism (3) by means of bolts, a No. 2 conductive column (452) being fixedly penetrated inside the flange (451), a wiring board (453) being detachably sleeved on the outer wall of the No. 2 conductive column (452), the wiring board (453) and the No. 2 conductive column (452) being electrically connected, a plurality of adjustment slots (454) being evenly arranged on the top of the wiring board (453), a circular slot (455) being also arranged at the center of the top of the wiring board (453), a conductive metal sheet being fixedly mounted on the inner wall of each of the adjustment slots (454), a heating actuator for heating the assembly area of ​​the housing end cover (11) being arranged inside the adjustment slots (454), and a position adjustment component for adjusting the position of the heating actuator being also arranged inside the adjustment slots (454).

2. The housing bearing feeding and assembling device for the production of permanent magnet synchronous servo motors according to claim 1 is characterized in that: Also includes: A bearing conveying assembly is arranged on the back side of the lower inspection platform (1) and is used to convey the bearing to be assembled to the interior of the upper inspection platform (2), the bearing conveying assembly comprising a loading tray (6) and a conveying frame (7) fixedly arranged at the output end of the loading tray (6); A manipulator (8) is fixedly mounted on the inner wall of the upper inspection platform (2) and is used to clamp the bearing input by the bearing conveying assembly and place the bearing on a bearing mechanism (4) near the manipulator (8); A press-fitting assembly is arranged on one side of the top of the lower inspection platform (1) and is used to press-fit the bearing into the assembly area of ​​the housing end cover (11). The press-fitting assembly comprises a bracket fixedly arranged on one side of the top of the lower inspection platform (1) and an electric push rod (9) fixedly arranged on the top of the bracket. The output shaft of the electric push rod (9) slides through the bracket and is fixedly provided with a pressure plate (10).

3. The housing bearing feeding and assembling device for the production of permanent magnet synchronous servo motors according to claim 1 is characterized in that: The turntable mechanism (3) comprises: A turntable (31) is arranged on the top of the lower detection platform (1) and is used to provide a bearing platform for the installation of multiple bearing mechanisms (4); An electric energy transmission component, used for transmitting electric energy to a plurality of support mechanisms (4) respectively, so as to ensure the normal operation of the support mechanisms (4), the electric energy transmission component comprising a first conductive column (32) detachably arranged on the top of the lower detection platform (1), the first conductive column (32) being electrically connected to a plurality of wires (34) via a brush (33), and the plurality of wires (34) being electrically connected to the support mechanisms (4) at corresponding positions respectively; The servo motor is fixedly arranged on one side of the top of the lower detection platform (1) via a motor bracket, and is used to drive the turntable (31) to perform intermittent circular motion.

4. The housing bearing feeding and assembling device for the production of permanent magnet synchronous servo motors according to claim 3 is characterized in that: A toothed ring (43) meshingly connected to the arc-shaped rack (5) is fixedly disposed on the top of the bearing seat (41), and an avoidance through hole (44) is also provided on the top of the rotating seat (42).

5. The housing bearing feeding and assembling device for the production of permanent magnet synchronous servo motors according to claim 1, characterized in that: The position adjustment assembly comprises a screw rod (458) rotatably arranged inside the adjustment groove (454), one end of the screw rod (458) rotatably passes through the adjustment groove (454) and extends into the inside of the circular groove (455), and a bevel gear (459) is fixedly arranged at one end of the screw rod (458) located inside the circular groove (455), and a bevel gear disc (456) meshingly connected with the bevel gear (459) is rotatably arranged inside the circular groove (455) via a rotating shaft, and an adjustment knob (457) for driving the bevel gear disc (456) to rotate is fixedly arranged at the top end.

6. The housing bearing feeding and assembling device for the production of permanent magnet synchronous servo motors according to claim 5, characterized in that: The heating actuator comprises a slider (4510) slidably arranged inside the adjustment groove (454), a conductive metal sleeve being fixedly sleeved on the outer wall of the slider (4510), the slider (4510) being threadedly sleeved on the outer wall of the screw rod (458), and a heating wire (4511) being fixedly arranged on one end of the slider (4510) away from the circular groove (455).

7. The housing bearing feeding and assembling device for the production of permanent magnet synchronous servo motors according to claim 1, characterized in that: The housing end cover (11) comprises an end cover body (111), a bearing installation groove (112) for assembling a bearing is provided at the top center position of the end cover body (111), and a motor shaft hole is provided at the bottom center position of the bearing installation groove (112).

8. The housing bearing feeding and assembling device for producing a permanent magnet synchronous servo motor according to claim 1, characterized in that: A controller for controlling the operation of all electrical equipment is also fixedly arranged on the outer wall of the lower detection platform (1).

9. A material loading and assembly method for a housing bearing loading and assembly device for producing a permanent magnet synchronous servo motor, characterized in that: The housing bearing feeding and assembling device for the production of a permanent magnet synchronous servo motor according to any one of claims 1 to 8 comprises the following steps: Step 1: First, the turntable mechanism (3) rotates to a preset angle according to a preset program and then stops rotating. Then, the housing end cover (11) to be assembled is placed in the supporting mechanism (4) at a corresponding position. The supporting mechanism (4) immediately heats the stably placed housing end cover (11); Step 2: After the intermittent time ends, the turntable mechanism (3) drives the supporting mechanism (4) equipped with the housing end cover (11) to continue to rotate by a preset angle. During the rotation, the arc-shaped rack (5) and the supporting mechanism (4) meet and drive the supporting mechanism (4) to rotate multiple times. At this time, the housing end cover (11) has completed the preset heating time. Step 3: Then, the turntable mechanism (3) continues to drive the shell end cover (11) that has been heated to rotate again by a preset angle, and the bearing is placed in the assembly position inside the shell end cover (11), completing the pre-assembly work. Then, the turntable mechanism (3) drives the shell end cover (11) and the bearing to rotate to the assembly area to complete the assembly of the bearing and the shell end cover (11).

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