Motor assembly, double swing heads, double-drive rotary table and machine tool
By designing a motor assembly with a rotor adjustment assembly, the problems of motor thermal overload and debugging difficulties in the swing head of the dual-drive motor are solved, and high-precision magnetic pole angle adjustment and improved motor torque output are achieved.
Patent Information
- Application Number
- CN202323582508.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2033-12-26
AI Technical Summary
In the swing head of the dual-drive motor, imperfect phase angle calibration may lead to thermal overload of the motor, and it is difficult to debug the installation direction and position of the stator and rotor and the installation position of the magnetic pole angle during the debugging process.
A motor assembly is designed, including a stator, rotor and rotor adjustment assembly, which realizes the relative rotation of the rotor yoke and the rotor connecting plate through the design of waist grooves and fasteners, and adjusts the rotor yoke with gears and ring gear transmission of the drive component. the pole angle installation position.
The small angle and high precision adjustment of the rotor is achieved, the errors in debugging are reduced, labor costs and time costs are saved, and the torque output capability of the motor is improved.
Smart Images
Figure CN222464352U_ABST
Abstract
Description
Technical Field
[0001] The utility model is used in the field of processing equipment, and particularly relates to a motor component, a double-swing head, a double-drive turntable and a machine tool. Background Art
[0002] The direct-drive double swing head is a key core component of the five-axis linkage CNC machining center machine tool. Its A / C axis is directly driven by a torque motor. The large direct-drive double swing head has a strong parts processing capability and can independently complete roughing, semi-finishing, high-finishing and other processes. As the application scope of the swing head becomes wider and wider, the motor torque required by the swing head continues to increase. Therefore, the swing head needs to be able to continuously output a variety of stable torques to meet the needs of different processing stages. The emergence of dual-drive motor swing heads provides the possibility of high torque and high stability processing methods. In the dual-drive motor swing head, when running in parallel with rated load, if the phase angle calibration is not perfect, one of the participating motors may be thermally overloaded. In this case, the motor will not reach its rated torque during continuous operation. Therefore, how to control the synchronous control of the two parallel motors and the stable output becomes the top priority. The debugging of the installation direction and position of the two stators in the dual-drive motor and the installation position of the magnetic pole angle of the two rotors has always been a major pain point in the assembly and debugging of the dual-drive motor swing head. Utility Model Content
[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a motor assembly, a double swing head, a double-drive turntable and a machine tool.
[0004] The technical solution adopted by the utility model to solve its technical problems is:
[0005] In a first aspect, a motor assembly includes a stator, a rotor and a rotor adjustment assembly, wherein the rotor includes a rotor yoke, the rotor yoke is annular, the rotor yoke has a mounting step extending toward the center of the circle, an axial inner hole is provided in the middle of the mounting step, a rotor connecting disk is provided on the back side of the rotor yoke, a waist-shaped groove is provided on at least one of the mounting step and the rotor connecting disk, the rotor yoke and the rotor connecting disk are connected by a fastener arranged in the waist-shaped groove, and the rotor adjustment assembly includes a driving component, the driving component is installed on the rotor connecting disk through the axial inner hole, a gear is provided at the output end of the driving component, and the rotor yoke is provided with a gear ring directly or indirectly driven by the gear.
[0006] In combination with the first aspect, in certain implementations of the first aspect, the gear ring is disposed in the axial inner hole of the mounting step.
[0007] In combination with the first aspect and the above-mentioned implementations, in certain implementations of the first aspect, the driving component has an output shaft coaxial with the rotor, the gear is connected to the output shaft to form a sun gear, a plurality of planetary gears are provided between the sun gear and the ring gear, and the planetary gears are mounted on the rotor connecting plate through planetary gear mounting columns.
[0008] In combination with the first aspect and the above-mentioned implementations, in some implementations of the first aspect, the driving component includes a servo motor.
[0009] In combination with the first aspect and the above-mentioned implementations, in some implementations of the first aspect, the planetary gear mounting column is provided with a threaded hole for mounting the servo motor, and the servo motor is mounted on the planetary gear mounting column.
[0010] In combination with the first aspect and the above-mentioned implementations, in some implementations of the first aspect, the rotor yoke is provided with an outer ring extending in the axial direction, the outer ring is provided with a mounting groove for the magnetic steel patch, and the mounting groove is provided with magnets arranged at intervals.
[0011] In a second aspect, a double swing head includes a body, an A-axis, a first A-axis motor and a second A-axis motor, wherein the first A-axis motor is arranged at a first end of the A-axis, and the second A-axis motor is arranged at a second end of the A-axis, and at least one of the first A-axis motor and the second A-axis motor adopts a motor assembly as described in any implementation method in the first aspect, and the rotor connecting plate is connected to the A-axis.
[0012] In a third aspect, a dual-drive turntable comprises the motor assembly described in any implementation of the first aspect.
[0013] In a fourth aspect, a machine tool comprises a double swing head as described in any implementation of the second aspect.
[0014] In a fifth aspect, a machine tool comprises the dual-drive turntable described in any implementation of the third aspect.
[0015] One of the above technical solutions has at least one of the following advantages or beneficial effects: In the technical solution of the utility model, when the fasteners in the waist-shaped groove are not locked, the rotor yoke and the rotor connecting disk can rotate relative to each other to achieve rotational displacement. When the magnetic pole angle installation position of the motor assembly needs to be adjusted, the rotor connecting disk connected to the shaft system is first locked, and the fasteners between the rotor yoke and the rotor connecting disk are loosened. The rotor yoke is driven to rotate through the transmission cooperation of the gear and the gear ring of the driving component, thereby adjusting the magnetic pole angle installation position on the rotor yoke. After adjustment, the fasteners between the rotor yoke and the rotor connecting disk are locked, and the rotor connecting disk connected to the shaft system is loosened. The technical solution of the utility model can realize small angle and high-precision adjustment of the rotor, greatly reducing the error in debugging, saving labor costs and time costs.
[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the motor assembly of the utility model;
[0019] Figure 2 yes Figure 1 An exploded schematic diagram of the structure of an embodiment shown;
[0020] Figure 3 It is a schematic structural diagram of an embodiment of the double swing head of the utility model. DETAILED DESCRIPTION
[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.
[0022] In the present invention, if directions (up, down, left, right, front and back) are described, it is only for the convenience of describing the technical solution of the present invention, and does not indicate or imply that the technical features referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.
[0023] In the present utility model, "several" means one or more, "multiple" means more than two, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself. In the description of the present utility model, if there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0024] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected or electrically connected or able to communicate with each other; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.
[0025] An embodiment of the utility model provides a motor assembly, which can be used for directly driving a driving component of a double swing head.
[0026] See also Figure 1 , Figure 2The motor assembly includes a stator 100, a rotor 200 and a rotor adjustment assembly. The rotor 200 includes a rotor yoke 201. The rotor yoke 201 is annular. The rotor yoke 201 has a mounting step 202 extending toward the center of the circle. An axial inner hole 203 is provided in the middle of the mounting step 202. A rotor connecting plate 204 is provided on the back side of the rotor yoke 201. The rotor connecting plate 204 is connected between the rotor yoke 201 and the shaft system when in use, and is used for power transmission from the motor assembly to the shaft system. A waist groove 205 is provided on at least one of the mounting step 202 and the rotor connecting plate 204. The waist groove 205 forms an angle with the radial direction of the rotor yoke 201, and is used to adjust the fastener 206 therein when the rotor connecting plate 204 and the rotor yoke 201 rotate relative to each other. The rotor yoke 201 and the rotor connecting plate 204 are connected by the fastener 206 provided in the waist groove 205. The fastener 206 can be bolts, bolts, etc. The rotor adjustment assembly includes a driving component 300, which is arranged outside the rotor yoke 201. The driving component 300 is installed on the rotor connecting disk 204 through the axial inner hole 203. The output end of the driving component 300 is provided with a gear 301, and the rotor yoke 201 is provided with a ring gear 207 that directly or indirectly drives the gear 301. When it is necessary to adjust the magnetic pole angle installation position of the motor assembly, the gear 301 can be driven to rotate by the driving component 300, and the rotor yoke 201 can be driven to rotate relative to the rotor connecting disk 204 through direct or indirect transmission between the gear 301 and the ring gear 207. By adopting the meshing transmission between the gear 301 and the ring gear 207, the adjustment ability and adjustment accuracy of the magnetic pole angle installation position are greatly improved.
[0027] Combination Figure 1 , Figure 2 , Figure 3 In the technical solution of the utility model, when the fastener 206 in the waist groove 205 is not locked, the rotor yoke 201 and the rotor connecting disk 204 can rotate relative to each other to achieve rotational displacement. When the magnetic pole angle installation position of the motor assembly needs to be adjusted, the rotor connecting disk 204 connected to the shaft system is first locked, and the fastener 206 between the rotor yoke 201 and the rotor connecting disk 204 is loosened. The rotor yoke 201 is driven to rotate through the transmission cooperation between the gear 301 of the driving component 300 and the gear ring 207, thereby adjusting the magnetic pole angle installation position on the rotor yoke 201. After the adjustment is in place, the fastener 206 between the rotor yoke 201 and the rotor connecting disk 204 is locked, and the rotor connecting disk 204 connected to the shaft system is loosened. The technical solution of the utility model can realize small angle and high-precision adjustment of the rotor 200, greatly reducing the error in debugging, saving labor costs and time costs.
[0028] The gear ring 207 can be an outer gear ring or an inner gear ring. For example, in some embodiments, see Figure 1 , Figure 2The gear ring 207 is arranged in the axial inner hole 203 of the mounting step 202. In other words, by adopting the inner gear ring, the gear 301 of the driving component 300 can be more compactly arranged in the axial inner hole 203 of the rotor yoke 201, which has a compact structure and is easy to install.
[0029] In some embodiments, see Figure 1 , Figure 2 The driving component 300 has an output shaft coaxial with the rotor 200, and the gear 301 is connected to the output shaft to form a sun gear. A plurality of planetary gears 302 are arranged between the sun gear and the ring gear 207, and the planetary gears 302 are mounted on the rotor connecting disk 204 through the planetary gear mounting column 208. When the rotor adjustment assembly is working and debugging, the sun gear 301 on the driving component 300 is driven to rotate and drive the planetary gears 302 on the rotor connecting disk 204. After the planetary gears 302 rotate, they drive the ring gear 207 on the rotor yoke 201, so that the rotor yoke 201 can be displaced in the rotation direction in the waist-shaped groove 205, thereby achieving the effect of changing the magnetic pole angle on the rotor yoke 201. In this embodiment, the reduction transmission mechanism is formed by the cooperation of the sun gear 301 and the planetary gears 302, which further improves the adjustment accuracy of the magnetic pole angle on the rotor yoke 201.
[0030] The driving component 300 may be a crank, a motor, etc. For example, in some embodiments, see Figure 1 , Figure 2 The driving component 300 includes a servo motor. The servo motor can be driven to adjust the rotor 200 to a small angle and high torque, which greatly avoids the error of manual adjustment during debugging and saves labor costs and time costs.
[0031] For further information, see Figure 1 , Figure 2 The planetary gear mounting column 208 is provided with a threaded hole for mounting the servo motor, and the servo motor is mounted on the planetary gear mounting column 208. In this embodiment, the servo motor is mounted on the rotor connecting plate 204 by means of the planetary gear mounting column 208, which has a compact structure and is easy to install. Moreover, the servo motor can be disassembled and reused after adjustment, which can not only make the product lighter, but also greatly increase the economic efficiency of the product by making the servo motor reusable.
[0032] In some embodiments, see Figure 1 , Figure 2 The rotor yoke 201 is provided with an outer ring extending in the axial direction, and the outer ring is provided with a mounting groove for the magnetic steel patch, and the mounting groove is provided with magnetic steels 209 arranged at intervals.
[0033] The embodiment of the utility model also provides a double swing head, see Figure 3The double swing head includes a body 400, an A-axis 403, a first A-axis motor 401 and a second A-axis motor 402. The first A-axis motor 401 is arranged at the first end of the A-axis, and the second A-axis motor 402 is arranged at the second end of the A-axis. At least one of the first A-axis motor 401 and the second A-axis motor 402 adopts a motor assembly as in any of the above embodiments, and the rotor connecting plate 204 is connected to the A-axis.
[0034] For example, Figure 3 In the embodiment shown, the stator on one side of the double swing head is equipped with a common rotor, and the other side is equipped with a rotor with an adjustment assembly. The stators and rotors on both sides together form a dual-drive motor assembly.
[0035] See also Figure 1 , Figure 2 , Figure 3 The stator 100 is provided with the same U-phase starting winding position, and the coil winding outlet position 101 is consistent with the U-phase angle position. The positioning pins on the iron core ensure that the U-phase is at a consistent angle when the coil is installed on the water jacket. The stator 100 cold water jacket is provided with an installation positioning pin hole to ensure that the U-phase is at the 0 degree position when the two stators 100 are installed oppositely.
[0036] During the specific adjustment, the U-phase lines in the stators 100 on both sides are connected to the oscilloscope. At this time, if the magnetic pole direction of the rotor 200 is not adjusted, the two motor U-phase phase curves obtained by rotating the A-axis will be misaligned on the X-axis. Rotate the A-axis so that the N-phase of the ordinary rotor 200 is as close to the stator 100 outlet position 101 as possible. At this time, lock the A-axis shaft system, loosen the matching screws between the rotor yoke 201 and the rotor connection plate 204, and drive the rotor yoke 201 to rotate by driving the servo motor, so as to adjust the N-pole magnetic pole on the rotor yoke 201 to be consistent with the stator 100 outlet position 101. Tighten the matching screws between the rotor yoke 201 and the rotor connection plate 204, loosen the A-axis shaft system, rotate the A-axis to observe the U-phase phase curves of the motors on both sides at this time, and repeat the above adjustment process until the U-phase phase curves of the two motors coincide. At this point, the dual-motor dual-drive debugging is completed.
[0037] The embodiments of the utility model realize the debugging of the synchronous drive of the dual motors, greatly reduce the debugging difficulty of the dual-drive motors, improve the torque that the motors can provide, and the servo motors can be disassembled and reused after adjustment, which not only makes the product lighter but also the reusable servo motor greatly increases the economy of the product.
[0038] An embodiment of the utility model further provides a dual-drive turntable, comprising the motor assembly in any of the above embodiments.
[0039] An embodiment of the utility model further provides a machine tool, comprising the double swing head in any of the above embodiments.
[0040] An embodiment of the utility model further provides a machine tool, comprising the dual-drive turntable in any of the above embodiments.
[0041] In the description of this specification, the description with reference to the terms "example", "embodiment" or "some embodiments" 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 utility model. 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 any one or more embodiments or examples in a suitable manner.
[0042] Of course, the invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.
Claims
1. A motor assembly, characterized in that: The invention comprises a stator, a rotor and a rotor adjustment assembly, wherein the rotor comprises a rotor yoke, which is annular and has a mounting step extending toward the center of a circle, an axial inner hole is arranged in the middle of the mounting step, a rotor connecting disk is arranged on the back side of the rotor yoke, a waist-shaped groove is arranged on at least one of the mounting step and the rotor connecting disk, the rotor yoke and the rotor connecting disk are connected by a fastener arranged in the waist-shaped groove, and the rotor adjustment assembly comprises a driving component, the driving component is mounted on the rotor connecting disk through the axial inner hole, a gear is arranged at the output end of the driving component, and the rotor yoke is provided with a gear ring directly or indirectly driven by the gear.
2. The motor assembly according to claim 1, characterized in that: The gear ring is arranged in the axial inner hole of the mounting step.
3. The motor assembly according to claim 2, characterized in that: The driving component has an output shaft coaxial with the rotor, the gear is connected to the output shaft to form a sun gear, a plurality of planetary gears are arranged between the sun gear and the ring gear, and the planetary gears are mounted on the rotor connecting plate through planetary gear mounting columns.
4. The motor assembly according to claim 3, characterized in that: The driving component includes a servo motor.
5. The motor assembly according to claim 4, characterized in that: The planetary gear mounting column is provided with a threaded hole for mounting the servo motor, and the servo motor is mounted on the planetary gear mounting column.
6. The motor assembly according to claim 1, characterized in that The rotor yoke is provided with an outer ring extending in the axial direction, the outer ring is provided with a mounting groove for a magnetic steel patch, and the mounting groove is provided with magnetic steels arranged at intervals.
7. A double swing head, characterized in that: It includes a body, an A-axis, a first A-axis motor and a second A-axis motor, wherein the first A-axis motor is arranged at the first end of the A-axis, and the second A-axis motor is arranged at the second end of the A-axis, and at least one of the first A-axis motor and the second A-axis motor adopts the motor assembly as described in any one of claims 1 to 6, and the rotor connecting plate is connected to the A-axis.
8. A dual-drive turntable, characterized in that: A motor assembly comprising any one of claims 1 to 6.
9. A machine tool, characterized in that: Including the double swing head described in claim 7.
10. A machine tool, characterized in that: Including the dual-drive turntable as described in claim 8.