Motor and die bonder

Abstract

The utility model provides a motor and a die bonder. The motor comprises: a shaft body; a first axial side of the end cover is provided with a bearing chamber, and a second axial side of the end cover is provided with a mounting groove; a mounting sleeve; the shaft body is sleeved with the mounting sleeve and the bearing, the mounting sleeve and the bearing are in interference fit with the shaft body, and a part of the bearing is arranged in the bearing chamber; and the encoder comprises an annular rotor and an annular stator which are rotationally connected, the annular rotor is annularly arranged on the mounting sleeve and connected with the mounting sleeve, and the annular stator is arranged in the mounting groove and connected with the end cover. By controlling the matching size of the bearing chamber and the mounting groove, the matching size of the mounting sleeve and the stator of the encoder can be ensured, so that the encoder can be accurately matched with the rotor of the motor, and the measurement accuracy of the encoder can be ensured.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a motor and a die bonding machine. Background Art

[0002] The encoder is used to convert the rotation state of the motor into electrical signals and transmit them to the controller so that the controller can accurately control the motor through these electrical signals.

[0003] In related technologies, encoders rely on fixtures for positioning. Specifically, the fixture and the shaft are first positioned, then the encoder and fixture are positioned, and finally the encoder and shaft are connected using screws. This setup results in a problem with the installation reference conversion during encoder installation, resulting in an unreasonable encoder installation method, low encoder installation accuracy, and poor measurement accuracy. Utility Model Content

[0004] This application aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] To this end, a first aspect of the present application provides an electric motor.

[0006] A second aspect of the present application provides a die bonding machine.

[0007] In view of this, the first aspect of the present application provides a motor, comprising: a shaft body; an end cover, a bearing chamber is provided on the first axial side of the end cover, and a mounting groove is provided on the second axial side of the end cover; a mounting sleeve; a bearing, the mounting sleeve and the bearing are both sleeved on the shaft body, the mounting sleeve and the bearing are both interference fit with the shaft body, and a part of the bearing is provided in the bearing chamber; an encoder, the encoder comprises a rotatably connected annular rotor and an annular stator, the annular rotor is arranged in the mounting sleeve and is connected to the mounting sleeve, and the annular stator is arranged in the mounting groove and connected to the end cover.

[0008] The present application provides a motor comprising a shaft, an end cover, a mounting sleeve, a bearing and an encoder.

[0009] A bearing chamber is provided on a first axial side of the end cover, and a mounting groove is provided on a second axial side of the end cover. The encoder includes an annular stator and an annular rotor, which is arranged around the mounting sleeve and connected to the mounting sleeve.

[0010] It can be understood that the mounting sleeve is an annular structure, and the annular rotor of the encoder is located between the mounting sleeve and the annular stator of the encoder.

[0011] The bearing chamber is used to assemble the bearing, and the mounting groove is used to assemble the annular stator of the encoder.

[0012] Specifically, the bearing is sleeved on the shaft body, and the bearing and the shaft body are interference fit, and a part of the bearing is located in the bearing chamber.

[0013] Specifically, the annular stator of the encoder is arranged in the mounting groove, and the annular stator of the encoder is connected to the end cover.

[0014] In other words, the end cap serves to mount and secure the bearing and encoder. Because the end cap includes a bearing chamber for mating with the bearing and a mounting slot for mating with the encoder's annular stator, the mating dimensions of the bearing chamber and mounting slot are fixed, indirectly defining the mating dimensions of the bearing and encoder's annular stator. Because the bearing and shaft have an interference fit, the mounting sleeve and shaft also have an interference fit, and the mounting sleeve is connected to the encoder's annular rotor, controlling the mating dimensions of the bearing chamber and mounting slot ensures the mating dimensions of the mounting sleeve and encoder's annular stator, the mating dimensions of the shaft and encoder's annular stator, and ultimately the mating dimensions of the motor's rotor and encoder's annular stator. This ensures precise mating of the encoder with the motor's rotor and guarantees the encoder's measurement accuracy.

[0015] In addition, this application eliminates the tooling used to install the encoder in the related technology by rationally setting the structure of the motor. While ensuring the measurement accuracy of the encoder, it saves the investment of additional materials, which is beneficial to reducing the product's use cost and effectively simplifying the product's installation process.

[0016] The motor described above in this application may also have the following additional technical features:

[0017] In some embodiments, optionally, the distance between the axis of the bearing chamber and the axis of the mounting groove is less than or equal to 0.03 mm.

[0018] In this embodiment, the structure of the end cap is further defined.

[0019] The distance between the axis of the bearing chamber and the axis of the mounting groove is less than or equal to 0.03 mm, that is, the coaxiality of the bearing chamber and the mounting groove is limited.

[0020] According to the structural setting of the encoder (specifically, the annular stator of the encoder is arranged around the annular rotor of the encoder), by limiting the matching dimensions of the axis of the bearing chamber and the axis of the mounting groove, the coaxiality of the encoder mounting sleeve and the annular stator of the encoder is ensured, the coaxiality of the shaft body and the annular stator of the encoder is ensured, and the matching dimensions of the rotor of the motor and the annular stator of the encoder are ensured, thereby providing effective and reliable structural support for ensuring the measurement accuracy of the encoder.

[0021] In some embodiments, optionally, a plurality of baffles are provided on the axial second side of the end cover, and the plurality of baffles are arranged at intervals along the circumferential direction. The plurality of baffles and the end surface of the axial second side of the end cover enclose a mounting groove, and the annular stator is transitionally fitted with the mounting groove.

[0022] In this embodiment, the structure of the end cap is further defined.

[0023] A plurality of baffles are provided on the second axial side of the end cap, spaced apart along the circumference of the shaft. The baffles and the end surface of the second axial side of the end cap enclose a mounting slot. The baffles form the sidewalls of the mounting slot, while the end surface of the second axial side of the end cap forms the bottom wall of the mounting slot.

[0024] Multiple baffles are arranged at intervals along the circumference of the shaft body. Therefore, while ensuring the effective matching dimensions of the mounting groove and the annular stator of the encoder, the area of ​​the side wall of the mounting groove is adaptively reduced, thereby facilitating the disassembly and assembly of the annular stator and end cover of the encoder.

[0025] It is understandable that if the baffle is an annular plate, the matching area between the baffle and the outer peripheral surface of the annular stator is larger, and the resistance to disassembly and assembly of the annular stator and the end cover is larger, which will increase the difficulty of disassembly and assembly of the encoder.

[0026] At the same time, multiple baffles are arranged at intervals along the circumference of the shaft, which can reduce the material input of the end cover, which is beneficial to reducing the production cost of the product, and reduce the weight of the end cover, which is beneficial to reducing the production cost of the motor.

[0027] In addition, the shape of the mounting groove is adapted to the shape of the annular stator, that is, the shape of the groove sidewall of the mounting groove is annular, and the shape of the groove bottom wall of the mounting groove is circular.

[0028] The annular stator and the mounting slot have a transition fit, meaning there may be a gap or an interference fit between the outer surface of the annular stator and the wall of the mounting slot. However, both the gap and interference fit are relatively small. This arrangement can transmit a certain amount of torque and axial force, ensuring precise positioning between the annular stator and the mounting slot while also meeting the requirements for easy disassembly.

[0029] It is understood that the shape of the mounting groove matches the shape of the annular stator, and the annular stator and the mounting groove are seamlessly integrated. Therefore, by controlling the concentricity of the bearing chamber and the mounting groove, the coaxiality of the mounting sleeve and the encoder's annular stator can be ensured, as can the coaxiality of the shaft and the encoder's annular stator. This, in turn, ensures the coaxiality of the motor's rotor and the encoder's annular stator, allowing the encoder to precisely mate with the motor's rotor and guaranteeing the encoder's measurement accuracy.

[0030] In some embodiments, the annular stator and the end cover are optionally detachably connected.

[0031] In this embodiment, the annular stator and end caps are detachably connected. This arrangement ensures the reliability of the connection between the annular stator and the end caps while facilitating cleaning and maintenance of the annular stator and the end caps. In other words, the annular stator and the end caps can be separated or assembled together according to actual use needs.

[0032] In some embodiments, optionally, a portion of the end cover located between the multiple baffles and the shaft body is provided with a mounting hole; the motor further comprises a first fastener connecting the annular stator and the mounting hole.

[0033] In this embodiment, the matching structure between the end cover and the annular stator of the encoder is further defined.

[0034] The end cover is provided with a mounting hole, and the mounting hole is located between the multiple baffles and the shaft body.

[0035] The motor further includes a first fastener, which is used to cooperate with the mounting hole and the annular stator of the encoder, and the first fastener connects the annular stator of the encoder and the mounting hole. Specifically, the first fastener passes through the annular stator of the encoder and is locked into the mounting hole.

[0036] Specifically, the shape of the mounting groove matches the shape of the annular stator, and the annular stator and the mounting groove are transitionally matched. The first fastener passes through the annular stator of the encoder and locks into the mounting hole, thereby firmly and securely assembling the annular stator of the encoder and the end cover.

[0037] Optionally, the first fastener includes bolts, screws, rivets, etc., which are not listed here one by one.

[0038] In some embodiments, optionally, there are multiple first fasteners and multiple mounting holes, each first fastener cooperates with one mounting hole; and the multiple mounting holes are arranged at equal intervals along the circumference of the shaft.

[0039] In this embodiment, the matching structure between the end cover and the annular stator of the encoder is further defined.

[0040] There are multiple first fasteners and multiple mounting holes, and each first fastener is matched with one mounting hole.

[0041] Multiple mounting holes are arranged at equal intervals along the circumference of the shaft. This arrangement ensures that after the annular stator of the encoder is assembled with the end cover through multiple first fasteners, the force balance and consistency at different positions of the annular stator of the encoder can be ensured, the matching dimensions of the annular stator and the end cover can be ensured, and the local warping of the annular stator can be avoided. The coaxiality of the mounting sleeve and the annular stator of the encoder can be ensured, and the coaxiality of the shaft and the annular stator of the encoder can be ensured, thereby ensuring the coaxiality of the rotor of the motor and the annular stator of the encoder, so that the encoder can be accurately matched with the rotor of the motor.

[0042] In some embodiments, the annular rotor and the mounting sleeve are optionally detachably connected.

[0043] In this embodiment, the annular rotor and mounting sleeve are detachably connected. This arrangement ensures the reliability of the connection between the annular rotor and mounting sleeve while facilitating cleaning and maintenance of the annular rotor and mounting sleeve. Specifically, the annular rotor and mounting sleeve can be separated or assembled together according to actual use needs.

[0044] In some embodiments, optionally, there is a gap between the inner circumferential surface of the annular rotor and the outer circumferential surface of the mounting sleeve; the motor further includes a second fastener, and the annular rotor and the mounting sleeve are connected via the second fastener.

[0045] In this embodiment, the matching structure between the mounting sleeve and the annular rotor of the encoder is further defined.

[0046] There is a gap between the inner circumferential surface of the annular rotor and the outer circumferential surface of the mounting sleeve, that is, the annular rotor and the mounting sleeve are clearance-fitted.

[0047] The motor further comprises a second fastener, which is used to connect the annular rotor and the mounting sleeve. That is, the annular rotor and the mounting sleeve of the encoder are assembled together through the second fastener.

[0048] This arrangement allows the encoder to be assembled by fitting the annular rotor onto the outside of the mounting sleeve and inserting it into the mounting slot along the axial direction of the shaft. The annular rotor and mounting sleeve are then assembled together using a second fastener. In other words, this arrangement allows the encoder's annular stator to be effectively inserted into the mounting slot and the annular rotor to be effectively fitted onto the outside of the mounting sleeve. The second fastener then secures the annular rotor and mounting sleeve together. In other words, this provides effective and reliable structural support for assembly and disassembly of the encoder.

[0049] In some embodiments, optionally, the motor includes a housing and an encoder cover, and the housing and the encoder cover are respectively connected to both sides of the end cover, and the encoder cover and the end cover enclose an installation cavity for accommodating the encoder; the side of the end cover has a plurality of protrusions, and the plurality of protrusions are arranged along the circumference of the shaft body, and each protrusion is connected between the housing and the encoder cover.

[0050] In this embodiment, the structure of the motor is further defined.

[0051] The motor includes a housing and an encoder cover, which are respectively connected to two sides of the end cover. The encoder cover and the end cover enclose a mounting cavity for accommodating the encoder.

[0052] Specifically, the side of the end cap has multiple protrusions arranged along the circumference of the shaft. These protrusions are used to connect to the housing and encoder cover. For example, each protrusion is sandwiched between the housing and the encoder cover. This structural arrangement of multiple protrusions increases the mating area and mating angle between the end cap, housing, and encoder cover, thereby improving the stability and reliability of the assembly of the end cap, housing, and encoder cover.

[0053] In addition, this arrangement can ensure the balance and consistency of forces at different positions of the end cover, avoid the occurrence of tilting of the end cover, and provide reliable structural support to ensure the coaxiality of the mounting sleeve and the annular stator of the encoder.

[0054] A second aspect of the present invention provides a crystal bonding machine, comprising: the motor in the first aspect, wherein the shaft is hollow.

[0055] The die bonding machine provided by the present invention includes the motor as in the first aspect, and therefore has all the beneficial effects of the above-mentioned motor, which will not be described one by one here.

[0056] Additional aspects and advantages of the present application will become apparent in the following description or may be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0058] Figure 1 A schematic diagram of the first part of the structure of a motor according to an embodiment of the present application is shown;

[0059] Figure 2 A schematic diagram of the second part of the structure of a motor according to an embodiment of the present application is shown;

[0060] Figure 3 An exploded view of an end cap and an encoder according to an embodiment of the present application is shown;

[0061] Figure 4 A schematic structural diagram of an end cover according to an embodiment of the present application is shown.

[0062] in, Figures 1 to 4 The corresponding relationship between the reference numerals and component names is as follows:

[0063] 10 motor, 100 shaft, 200 end cover, 210 bearing chamber, 220 mounting groove, 230 baffle, 240 mounting hole, 250 protrusion, 300 mounting sleeve, 400 bearing, 500 encoder, 510 annular rotor, 520 annular stator, 600 first fastener, 700 second fastener, 800 housing, 900 encoder cover, 1000 mounting cavity, 1100 pressure plate. DETAILED DESCRIPTION

[0064] In order to more clearly understand the above-mentioned objects, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other in the absence of conflict.

[0065] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0066] Refer to the following Figures 1 to 4 The motor 10 and the die bonder according to some embodiments of the present application are described.

[0067] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, a motor 10 according to some embodiments of the present application includes: a shaft body 100; an end cover 200, a bearing chamber 210 is provided on the first axial side of the end cover 200, and a mounting groove 220 is provided on the second axial side of the end cover 200; a mounting sleeve 300; a bearing 400, the mounting sleeve 300 and the bearing 400 are both sleeved on the shaft body 100, the mounting sleeve 300 and the bearing 400 are both interference fit with the shaft body 100, and a part of the bearing 400 is provided in the bearing chamber 210; an encoder 500, the encoder 500 includes a ring-shaped rotor 510 and an ring-shaped stator 520 that are rotatably connected, the ring-shaped rotor 510 is arranged in an annular manner on the mounting sleeve 300 and is connected to the mounting sleeve 300, and the annular stator 520 is provided in the mounting groove 220 and is connected to the end cover 200.

[0068] The present application provides a motor 10 that includes a shaft 100 , an end cover 200 , a mounting sleeve 300 , a bearing 400 , and an encoder 500 .

[0069] A bearing chamber 210 is provided on a first axial side of the end cap 200, and a mounting groove 220 is provided on a second axial side of the end cap 200. The encoder 500 includes an annular stator 520 and an annular rotor 510. The annular rotor 510 is disposed around the mounting sleeve 300 and connected to the mounting sleeve 300.

[0070] It can be understood that the mounting sleeve 300 is an annular structure, and the annular rotor 510 of the encoder 500 is located between the mounting sleeve 300 and the annular stator 520 of the encoder 500 .

[0071] The bearing chamber 210 is used to assemble the bearing 400 , and the mounting groove 220 is used to assemble the annular stator 520 of the encoder 500 .

[0072] Specifically, the bearing 400 is sleeved on the shaft body 100 , and the bearing 400 and the shaft body 100 are interference fit, and a portion of the bearing 400 is located in the bearing chamber 210 .

[0073] Specifically, the annular stator 520 of the encoder 500 is disposed in the mounting groove 220 , and the annular stator 520 of the encoder 500 is connected to the end cover 200 .

[0074] In other words, the end cap 200 has the function of mounting and fixing the bearing 400 and the encoder 500. Because the end cap 200 is provided with a bearing chamber 210 that mates with the bearing 400 and a mounting groove 220 that mates with the annular stator 520 of the encoder 500, the mating dimensions of the bearing chamber 210 and the mounting groove 220 are fixed, thereby indirectly defining the mating dimensions of the bearing 400 and the annular stator 520 of the encoder 500. Since the bearing 400 has an interference fit with the shaft body 100, the mounting sleeve 300 has an interference fit with the shaft body 100, and the mounting sleeve 300 is connected to the annular rotor 510 of the encoder 500, therefore, by controlling the matching dimensions of the bearing chamber 210 and the mounting groove 220, the matching dimensions of the mounting sleeve 300 and the annular stator 520 of the encoder 500 can be ensured, and the matching dimensions of the shaft body 100 and the annular stator 520 of the encoder 500 can be ensured, and then the matching dimensions of the rotor of the motor 10 and the annular stator 520 of the encoder 500 can be ensured, so that the encoder 500 can be accurately matched with the rotor of the motor 10, and the measurement accuracy of the encoder 500 can be guaranteed.

[0075] In addition, the present application eliminates the tooling used to install the encoder 500 in the related art by rationally setting the structure of the motor 10. While ensuring the measurement accuracy of the encoder 500, it saves the investment in additional materials, helps reduce the cost of product use, and effectively simplifies the installation process of the product.

[0076] Optionally, the end cap 200 is spaced apart from the annular rotor 510. That is, the end cap 200 not only has the function of mounting and fixing the annular stator 520 of the encoder 500, but also does not interfere with the rotation of the annular rotor 510 of the encoder 500, thereby providing structural support for the effective operation of the motor 10.

[0077] In some embodiments, optionally, the distance between the axis of the bearing chamber 210 and the axis of the mounting groove 220 is less than or equal to 0.03 mm.

[0078] In this embodiment, the structure of the end cover 200 is further defined.

[0079] The distance between the axis of the bearing chamber 210 and the axis of the mounting groove 220 is less than or equal to 0.03 mm, that is, the coaxiality of the bearing chamber 210 and the mounting groove 220 is defined.

[0080] According to the structural setting of the encoder 500 (specifically, the annular stator 520 of the encoder 500 is arranged around the annular rotor 510 of the encoder 500), by limiting the matching dimensions of the axis of the bearing chamber 210 and the axis of the mounting groove 220, the coaxiality of the mounting sleeve 300 and the annular stator 520 of the encoder 500 is ensured, the coaxiality of the shaft body 100 and the annular stator 520 of the encoder 500 is ensured, and the matching dimensions of the rotor of the motor 10 and the annular stator 520 of the encoder 500 are ensured, thereby providing effective and reliable structural support for ensuring the measurement accuracy of the encoder 500.

[0081] In some embodiments, optionally, as Figure 3 and Figure 4 As shown, a plurality of baffles 230 are provided on the axial second side of the end cover 200, and the plurality of baffles 230 are arranged at intervals along the circumferential direction. The plurality of baffles 230 and the end surface of the axial second side of the end cover 200 enclose a mounting groove 220, and the annular stator 520 is transitionally matched with the mounting groove 220.

[0082] In this embodiment, the structure of the end cover 200 is further defined.

[0083] A plurality of baffles 230 are provided on the second axial side of the end cap 200. The baffles 230 are spaced apart along the circumference of the shaft body 100. The baffles 230 and the end surface of the second axial side of the end cap 200 enclose a mounting groove 220. The baffles 230 form the sidewalls of the mounting groove 220, while the end surface of the second axial side of the end cap 200 forms the bottom wall of the mounting groove 220.

[0084] Multiple baffles 230 are arranged at intervals along the circumference of the shaft body 100. Therefore, while ensuring the effective matching dimensions of the installation groove 220 and the annular stator 520 of the encoder 500, the area of ​​the groove side wall of the installation groove 220 is adaptively reduced, thereby facilitating the disassembly and assembly of the annular stator 520 of the encoder 500 and the end cover 200.

[0085] It is understandable that if the baffle 230 is an annular plate, the mating area between the baffle 230 and the outer peripheral surface of the annular stator 520 is larger, and the resistance to disassembly and assembly of the annular stator 520 and the end cover 200 is larger, which will increase the difficulty of disassembly and assembly of the encoder 500.

[0086] At the same time, multiple baffles 230 are arranged at intervals along the circumference of the shaft body 100, which can reduce the material input of the end cover 200, help reduce the production cost of the product, and reduce the weight of the end cover 200, which is help reduce the production cost of the motor 10.

[0087] In addition, the shape of the mounting groove 220 is adapted to the shape of the annular stator 520. That is, the shape of the groove sidewall of the mounting groove 220 is annular, and the shape of the groove bottom wall of the mounting groove 220 is circular.

[0088] The annular stator 520 and the mounting slot 220 have a transition fit. That is, there may be a gap or an interference fit between the outer surface of the annular stator 520 and the wall of the mounting slot 220. However, both the gap and the interference fit are relatively small. This arrangement can transmit a certain amount of torque and axial force, ensuring precise positioning between the annular stator 520 and the mounting slot 220 while also meeting the requirements for easy disassembly.

[0089] It is understandable that the shape of the mounting groove 220 is adapted to the shape of the annular stator 520, and the annular stator 520 is transitionally fitted with the mounting groove 220. Therefore, by controlling the concentricity of the bearing housing 210 and the mounting groove 220, the coaxiality of the mounting sleeve 300 and the annular stator 520 of the encoder 500 can be ensured, and the coaxiality of the shaft body 100 and the annular stator 520 of the encoder 500 can be ensured, thereby ensuring the coaxiality of the rotor of the motor 10 and the annular stator 520 of the encoder 500. This allows the encoder 500 to precisely fit with the rotor of the motor 10, thereby ensuring the measurement accuracy of the encoder 500.

[0090] In some embodiments, the annular stator 520 and the end cover 200 may be optionally detachably connected.

[0091] In this embodiment, the annular stator 520 and the end cover 200 are detachably connected. This arrangement ensures the reliability of the connection between the annular stator 520 and the end cover 200 while facilitating cleaning and maintenance of the annular stator 520 and the end cover 200. In other words, the annular stator 520 and the end cover 200 can be separated or assembled together according to actual use needs.

[0092] In some embodiments, optionally, as Figure 2 As shown, a portion of the end cover 200 located between the plurality of baffles 230 and the shaft body 100 is provided with a mounting hole 240 ; the motor 10 further includes a first fastener 600 , which connects the annular stator 520 and the mounting hole 240 .

[0093] In this embodiment, the matching structure between the end cover 200 and the annular stator 520 of the encoder 500 is further defined.

[0094] The end cover 200 is provided with a mounting hole 240 , and the mounting hole 240 is located between the plurality of baffles 230 and the shaft body 100 .

[0095] The motor 10 further includes a first fastener 600, which is configured to engage with the mounting hole 240 and the annular stator 520 of the encoder 500. The first fastener 600 connects the annular stator 520 of the encoder 500 and the mounting hole 240. Specifically, the first fastener 600 passes through the annular stator 520 of the encoder 500 and is locked into the mounting hole 240.

[0096] Specifically, the shape of the mounting groove 220 matches the shape of the annular stator 520, and the annular stator 520 is transitionally fitted into the mounting groove 220. The first fastener 600 passes through the annular stator 520 of the encoder 500 and is locked into the mounting hole 240, thereby firmly and securely assembling the annular stator 520 of the encoder 500 and the end cap 200.

[0097] Optionally, the first fastener 600 includes bolts, screws, rivets, etc., which are not listed here one by one.

[0098] In some embodiments, optionally, there are multiple first fasteners 600 and multiple mounting holes 240 , and each first fastener 600 cooperates with one mounting hole 240 ; the multiple mounting holes 240 are arranged at equal intervals along the circumference of the shaft body 100 .

[0099] In this embodiment, the matching structure between the end cover 200 and the annular stator 520 of the encoder 500 is further defined.

[0100] There are multiple first fasteners 600 and multiple mounting holes 240 , and each first fastener 600 is matched with one mounting hole 240 .

[0101] Multiple mounting holes 240 are arranged at equal intervals along the circumference of the shaft body 100. This arrangement ensures that after the annular stator 520 of the encoder 500 is assembled with the end cover 200 through multiple first fasteners 600, the force balance and consistency at different positions of the annular stator 520 of the encoder 500 can be ensured, the matching dimensions of the annular stator 520 and the end cover 200 can be ensured, and the local warping of the annular stator 520 can be avoided. The coaxiality of the mounting sleeve 300 and the annular stator 520 of the encoder 500 can be ensured, and the coaxiality of the shaft body 100 and the annular stator 520 of the encoder 500 can be ensured, thereby ensuring the coaxiality of the rotor of the motor 10 and the annular stator 520 of the encoder 500, so that the encoder 500 can be accurately matched with the rotor of the motor 10.

[0102] In some embodiments, the annular rotor 510 and the mounting sleeve 300 may be optionally detachably connected.

[0103] In this embodiment, the annular rotor 510 and the mounting sleeve 300 are detachably connected. This arrangement ensures the reliability of the connection between the annular rotor 510 and the mounting sleeve 300 while facilitating cleaning and maintenance of the annular rotor 510 and the mounting sleeve 300. In other words, the annular rotor 510 and the mounting sleeve 300 can be separated or assembled together according to actual use needs.

[0104] In some embodiments, optionally, as Figure 2As shown, there is a gap between the inner circumference of the annular rotor 510 and the outer circumference of the mounting sleeve 300 ; the motor 10 further includes a second fastener 700 , and the annular rotor 510 and the mounting sleeve 300 are connected via the second fastener 700 .

[0105] In this embodiment, the matching structure between the mounting sleeve 300 and the ring rotor 510 of the encoder 500 is further defined.

[0106] There is a gap between the inner circumferential surface of the annular rotor 510 and the outer circumferential surface of the mounting sleeve 300 , that is, the annular rotor 510 and the mounting sleeve 300 are clearance-fitted.

[0107] The motor 10 further includes a second fastener 700 , which is used to connect the annular rotor 510 and the mounting sleeve 300 . That is, the annular rotor 510 and the mounting sleeve 300 of the encoder 500 are assembled together by the second fastener 700 .

[0108] This arrangement allows the annular rotor 510 to be sleeved onto the outside of the mounting sleeve 300 during assembly of the encoder 500 and inserted into the mounting groove 220 along the axial direction of the shaft 100. The annular rotor 510 and the mounting sleeve 300 are then assembled together using the second fastener 700. In other words, this arrangement allows the annular stator 520 of the encoder 500 to be effectively inserted into the mounting groove 220 and the annular rotor 510 of the encoder 500 to be effectively sleeved onto the outside of the mounting sleeve 300. The annular rotor 510 and the mounting sleeve 300 are then effectively assembled together using the second fastener 700. In other words, this arrangement provides effective and reliable structural support for assembly and disassembly of the encoder 500.

[0109] In some embodiments, optionally, as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the motor 10 includes a shell 800 and an encoder cover 900, which are respectively connected to the two sides of the end cover 200, and the encoder cover 900 and the end cover 200 enclose an installation cavity 1000 for accommodating the encoder 500; the side of the end cover 200 has a plurality of protrusions 250, and the plurality of protrusions 250 are arranged along the circumference of the shaft body 100, and each protrusion 250 is connected between the shell 800 and the encoder cover 900.

[0110] In this embodiment, the structure of the motor 10 is further defined.

[0111] The motor 10 includes a housing 800 and an encoder cover 900 , which are respectively connected to two sides of the end cover 200 . The encoder cover 900 and the end cover 200 enclose a mounting cavity 1000 for accommodating the encoder 500 .

[0112] Specifically, the side of the end cap 200 has a plurality of protrusions 250, which are arranged along the circumference of the shaft body 100. The protrusions 250 are used to connect with the housing 800 and the encoder cover 900. For example, each protrusion 250 is sandwiched between the housing 800 and the encoder cover 900. The structural arrangement of the multiple protrusions 250 can increase the mating area and mating angle of the end cap 200, the housing 800, and the encoder cover 900, which is conducive to improving the assembly stability and reliability of the end cap 200, the housing 800, and the encoder cover 900. In addition, this arrangement can ensure the balance and consistency of force at different positions of the end cap 200, prevent the end cap 200 from tilting, and provide reliable structural support to ensure the coaxiality of the mounting sleeve 300 and the annular stator 520 of the encoder 500.

[0113] According to some further embodiments of the present application, a die bonding machine includes: the motor 10 in any of the above embodiments, wherein the shaft 100 is configured to be hollow.

[0114] The present application provides a die bonder, which includes a motor 10, wherein a shaft 100 of the motor 10 is hollow and is used for threading wires and tubes.

[0115] Since the die bonder includes the motor 10 according to any of the above embodiments, it has all the beneficial effects of the above motor 10 , which will not be described one by one here.

[0116] It is understandable that the rotation of the shaft body 100 drives the mounting sleeve 300 to rotate, and the rotation of the mounting sleeve 300 drives the annular rotor 510 of the encoder 500 to move relative to the annular stator 520 of the encoder 500 .

[0117] Optionally, the distance between the axis of the bearing chamber 210 and the axis of the mounting groove 220 is recorded as d, d = 0.028mm, d = 0.025mm, d = 0.022mm, d = 0.02mm, d = 0.018mm, d = 0.015mm, d = 0.012mm and d = 0.01mm, etc., which are not listed here one by one.

[0118] It can be understood that the inner circumferential surface of each baffle 230 facing the shaft body 100 is an arc-shaped surface.

[0119] In some other embodiments, the connection methods between the annular stator 520 of the encoder 500 and the end cover 200 also include screw connection, riveting, magnetic connection, plug-in connection, etc., which are not listed here one by one.

[0120] Optionally, the second fastener 700 includes bolts, screws, rivets, etc., which are not listed here one by one.

[0121] In some other embodiments, the shell 800 and the encoder cover 900 are connected, an opening is provided on the shell 800, the shell 800 and the encoder cover 900 enclose an assembly cavity, the opening and the assembly cavity are connected, the end cover 200, the bearing 400, the mounting sleeve 300 and the encoder 500 are all located in the assembly cavity, and the end cover 200 is connected to the cavity wall of the assembly cavity.

[0122] Optionally, an avoidance gap is formed at the connection between two adjacent protrusions 250, and the avoidance gap is used to avoid the inner surface of the shell 800 to avoid interference between the end cover 200 and the shell 800, thereby ensuring the matching dimensions of the end cover 200 and the shell 800.

[0123] Optionally, the end cap 200 is disposed around the shaft body 100, and the end cap 200 is spaced apart from the shaft body 100. A bearing chamber 210 is provided on a first axial side of the end cap 200, and a mounting groove 220 is provided on a second axial side of the end cap 200. The encoder 500 includes an annular stator 520 and an annular rotor 510, which is surrounded by the mounting sleeve 300 and the annular stator 520.

[0124] Optionally, the motor 10 includes a servo motor.

[0125] The present application rationally arranges the structure of the motor 10, which can quickly and accurately install the encoder 500, ensuring that the annular stator 520 of the encoder 500 and the rotor of the servo motor 10 have a high degree of coaxiality, while also increasing the installation speed of the encoder 500.

[0126] The motor 10 of the present application includes a shaft 100, an end cap 200, a mounting sleeve 300, a bearing 400, and an encoder 500. A bearing housing 210 is provided on a first axial side of the end cap 200, and a circular groove is machined on a second axial side of the end cap 200. The mounting groove 220 includes a circular groove. Based on the outer dimensions of the encoder 500, a tolerance fit is used to directly lock the annular stator 520 of the encoder 500 onto the circular groove of the end cap 200. By controlling the concentricity of the circular groove and the bearing housing 210, the coaxiality of the mounting sleeve 300 and the annular stator 520 of the encoder 500 is ensured.

[0127] Optionally, the axis of the bearing chamber 210 and the axis of the mounting groove 220 are on the same straight line.

[0128] Optionally, the bearing 400 is heat-shrunk onto the shaft body 100. The shaft body 100 and the mounting sleeve 300 form an interference fit to eliminate clearance between them. The bearing housing 210 of the end cap 200 and the bearing 400 utilize an H6 / H5 fit. Furthermore, the distance between the axis of the bearing housing 210 and the axis of the mounting groove 220 is less than or equal to 0.03 mm.

[0129] Optionally, the outer surface of the encoder 500 and the wall of the mounting slot 220 adopt an N6 / g6 fit, which greatly reduces the gap between the encoder 500 and the mounting slot 220. The encoder 500 needs to be gently pressed into the mounting slot 220, and then the annular stator 520 of the encoder 500 and the end cap 200 are assembled using the first fastener 600. The first fastener 600 passes through the annular stator 520 of the encoder 500 and the end cap 200 in sequence, locking the annular stator 520 of the encoder 500 and the end cap 200 together.

[0130] The shaft body 100 of the present application adopts a hollow design and is used for threading wires and pipes.

[0131] like Figure 2 As shown, the annular rotor 510 of the encoder 500 and the mounting sleeve 300 are clearance-fitted, and the annular rotor 510 of the encoder 500 and the mounting sleeve 300 are assembled together using two second fasteners 700. The two second fasteners 700 are spaced apart along the circumference of the shaft body 100.

[0132] The present application reasonably arranges the structure of the motor 10 to ensure that the distance between the axis of the annular stator 520 of the encoder 500 and the axis of the shaft body 100 is less than or equal to 0.02 mm.

[0133] A plurality of baffles 230 are provided on the second axial side of the end cap 200. The baffles 230 and the end surface of the second axial side of the end cap 200 enclose a mounting groove 220. The annular stator 520 of the encoder 500 is gently pressed into the mounting groove 220, creating a slight interference fit to absorb the tolerance gap between the annular stator 520 of the encoder 500 and the mounting groove 220. Bolts are then tightened until the distance between the axis of the annular stator 520 of the encoder 500 and the axis of the bearing chamber 210 is less than or equal to 0.02 mm.

[0134] Alternatively, as Figure 1 As shown, the motor 10 further includes a pressure plate 1100 .

[0135] In this application, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integrally connected; and "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0136] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A motor, characterized in that: include: Axis; An end cover, wherein a bearing chamber is provided on a first axial side of the end cover, and a mounting groove is provided on a second axial side of the end cover; Installation sleeve; A bearing, wherein the mounting sleeve and the bearing are both sleeved on the shaft body, the mounting sleeve and the bearing are interference fit with the shaft body, and a portion of the bearing is disposed in the bearing chamber; The encoder comprises an annular rotor and an annular stator which are rotatably connected. The annular rotor is arranged around the mounting sleeve and is connected to the mounting sleeve. The annular stator is arranged in the mounting groove and is connected to the end cover.

2. The motor according to claim 1, characterized in that The distance between the axis of the bearing chamber and the axis of the mounting groove is less than or equal to 0.03 mm.

3. The motor according to claim 1 or 2, characterized in that A plurality of baffles are provided on the second axial side of the end cover, and the plurality of baffles are arranged at intervals along the circumferential direction. The plurality of baffles and the end surface of the second axial side of the end cover enclose the mounting groove, and the annular stator is transitionally matched with the mounting groove.

4. The motor according to claim 3, characterized in that The annular stator and the end cover are detachably connected.

5. The motor according to claim 4, characterized in that The portion of the end cover located between the plurality of baffles and the shaft body is provided with a mounting hole; The motor further includes a first fastener connecting the annular stator and the mounting hole.

6. The motor according to claim 5, characterized in that There are multiple first fasteners and multiple mounting holes, and each first fastener is matched with one mounting hole; The plurality of mounting holes are arranged at equal intervals along the circumference of the shaft body.

7. The motor according to claim 1 or 2, characterized in that The annular rotor and the mounting sleeve are detachably connected.

8. The motor according to claim 7, characterized in that There is a gap between the inner circumferential surface of the annular rotor and the outer circumferential surface of the mounting sleeve; The motor further includes a second fastener, and the annular rotor and the mounting sleeve are connected via the second fastener.

9. The motor according to claim 1 or 2, characterized in that: The motor includes a housing and an encoder cover, wherein the housing and the encoder cover are respectively connected to two sides of the end cover, and the encoder cover and the end cover enclose a mounting cavity for accommodating the encoder; The side of the end cover has a plurality of protrusions, the plurality of protrusions are arranged along the circumference of the shaft body, and each of the protrusions is connected between the housing and the encoder cover.

10. A die bonding machine, characterized in that: include: The motor according to any one of claims 1 to 9, wherein the shaft is hollow.

Images