DDR five-axis turntable motor fixing device

Abstract

The utility model discloses a DDR five-axis turntable motor fixing device, which comprises a shell used for fixing a motor, a sealing cover is arranged on only one side of the shell, a motor mounting seat is fixedly arranged in the shell, a main shaft mounting boss is convexly arranged in the middle of the motor mounting seat, and a main shaft is arranged on the main shaft mounting boss. A receding through hole allowing a spindle to penetrate through is formed in the middle of the spindle mounting boss, a bearing used for mounting the spindle is arranged in the receding through hole, receding annular grooves corresponding to the rotor and the stator are formed in the motor mounting base, the spindle mounting boss is cylindrical, and the receding annular grooves and the spindle mounting boss are coaxially arranged. The positioning precision is higher, the structure is firmer, and the assembly is simpler.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a DDR five-axis turntable motor fixing device. Background Technology

[0002] Traditional motor mounting methods, such as Figure 3 As shown, the rotor, stator, and main shaft of the motor are fixed by a hollow outer shell and two end covers. During installation, the stator is usually fixed to the inner wall of the outer shell, the rotor and main shaft are installed on one end cover, the rotor and main shaft are then inserted into the stator on the outer shell, and finally the end cover is installed.

[0003] This fixing method is not suitable for DD motors. DD motors are permanent magnet motors with strong rotor magnetic force. However, the traditional motor installation method with fixed ends has no support structure on the other side of the housing. During insertion, the rotor is easily attracted to the stator magnetically. Since the rotor itself is heavy, the assembly is difficult. In addition, DD direct drive motors have very high requirements for motor positioning accuracy. The traditional end cover fixing method is difficult to guarantee the assembly accuracy requirements. Utility Model Content

[0004] This utility model aims to solve the technical problems existing in the prior art, and innovatively proposes a DDR five-axis turntable motor fixing device, which has higher positioning accuracy, more robust structure and simpler assembly.

[0005] To achieve the above objectives, this utility model provides a DDR five-axis rotary table motor fixing device, including a housing for fixing the motor, wherein only one side of the housing is provided with a cover, a motor mounting base is fixedly disposed inside the housing, a spindle mounting boss is centrally provided on the motor mounting base, a clearance through hole for the spindle to pass through is centrally provided on the spindle mounting boss, a bearing for mounting the spindle is provided in the clearance through hole, a clearance ring groove is provided on the motor mounting base corresponding to the rotor and stator, the spindle mounting boss is cylindrical, and the clearance ring groove is coaxially arranged with the spindle mounting boss.

[0006] In the above solution, the outer shell and the motor mounting base are integrally formed, which improves structural rigidity and ensures installation stability.

[0007] In the above scheme: the bearing is a disc bearing, and the inner ring and outer ring of the bearing are fixed to the main shaft and the motor mounting base respectively by bolts.

[0008] In the above scheme: the outer ring of the bearing is recessed in the clearance through hole at one end, which can position the outer ring of the bearing and improve the bearing installation efficiency.

[0009] In summary, the beneficial effects of this utility model are: by fixing the motor rotor with strong magnetic force to the motor mounting base, the phenomenon of the rotor being attracted to the stator during the assembly process of traditional structures is avoided, making assembly simpler and maximizing assembly efficiency. Both the stator and rotor are fixed to the outer casing, ensuring the coaxiality requirements of the casing, stator, and rotor, preventing motor stator rubbing, and improving the reliability of motor operation. The casing and motor mounting base are integrally molded, resulting in a more robust structure that meets the requirements of motor processing. Attached Figure Description

[0010] Figure 1 This is a cross-sectional view of the present invention.

[0011] Figure 2 This is a cross-sectional view of the outer casing.

[0012] Figure 3 It is a motor fixing structure based on existing technology. Detailed Implementation

[0013] The present invention will be further described below with reference to embodiments and accompanying drawings:

[0014] like Figures 1-2 As shown, a DDR five-axis rotary table motor fixing device includes a housing 1 for fixing the motor. The housing 1 has a cover on only one side. A motor mounting base 2 is fixedly installed inside the housing 1. A spindle mounting boss 2b is centrally protruding on the motor mounting base 2. A clearance through hole 2c for the spindle 4 to pass through is centrally provided on the spindle mounting boss 2b. A bearing 3 for mounting the spindle 4 is provided in the clearance through hole 2c. A clearance ring groove 2a is provided on the motor mounting base 2 corresponding to the rotor 5 and the stator 6. The spindle mounting boss 2b is cylindrical, and the clearance ring groove 2a is coaxially arranged with the spindle mounting boss 2b.

[0015] The outer casing 1 and the motor mounting base 2 are integrally formed, which improves structural rigidity and ensures installation stability. The bearing 3 is a disc bearing, and the inner and outer rings of the bearing 3 are fixed to the main shaft 4 and the motor mounting base 2 respectively by bolts.

[0016] An installation ring groove 2d is recessed at one end of the through hole 2c, corresponding to the outer ring of the bearing 3. The installation ring groove 2d can be used to position the outer ring of the bearing 3, thereby improving the installation efficiency of the bearing 3.

[0017] During installation, first place the bearing 3 into the mounting ring groove 2d, and then fix the outer ring of the bearing 3 to the motor mounting base 2 with bolts. Next, install the main shaft 4 and the inner ring of the bearing 3 together with bolts. Then, install the stator 6 into the housing 1, and finally fix the rotor 5 onto the main shaft 4.

Claims

1. A DDR five-axis rotary table motor fixing device, comprising a housing (1) for fixing the motor, characterized in that: The outer casing (1) has a cover on only one side. A motor mounting base (2) is fixedly installed inside the outer casing (1). A spindle mounting boss (2b) is centrally protruding on the motor mounting base (2). A clearance through hole (2c) for the spindle (4) to pass through is centrally provided on the spindle mounting boss (2b). A bearing (3) for mounting the spindle (4) is provided in the clearance through hole (2c). A clearance ring groove (2a) is provided on the motor mounting base (2) corresponding to the rotor (5) and stator (6). The spindle mounting boss (2b) is cylindrical. The clearance ring groove (2a) is coaxially arranged with the spindle mounting boss (2b).

2. The DDR five-axis turntable motor fixing device according to claim 1, characterized in that: The outer shell (1) and the motor mounting base (2) are integrally formed.

3. The DDR five-axis rotary table motor fixing device according to claim 1, characterized in that: The bearing (3) is a disc bearing, and the inner ring and outer ring of the bearing (3) are fixed to the main shaft (4) and the motor mounting base (2) respectively by bolts.

4. The DDR five-axis rotary table motor fixing device according to claim 3, characterized in that: The clearance through hole (2c) is recessed with a mounting ring groove (2d) on one end corresponding to the outer ring of the bearing (3).

Images