Integrated machine body structure for servo motor

Abstract

The utility model relates to the technical field of servo motors, in particular to an integrated machine body structure for a servo motor, which comprises a machine shell cylinder with a front cover, a round through hole is arranged at the axis position of the front cover, and an oil seal ring groove, a bearing ring groove and a glue containing ring groove are sequentially arranged along the inner wall of the round through hole from outside to inside. A stator iron core axial limiting flange is arranged at the position, close to the front cover, of the inner wall of the shell cylinder; a plurality of rear cover connecting bosses are symmetrically arranged at the position, close to a rear port, of the outer wall of the machine shell barrel, and a power line box mounting position is arranged at the top of any rear cover connecting boss. And a power line outlet and a grounding screw hole which can penetrate through the rear cover connecting boss and the shell cylinder are formed in the power line box mounting position. The machine body structure is simple in structure, can realize rapid and accurate assembly of subsequent components such as a stator and a rotor, can realize sealing only through a movably connected rear cover, and realizes front and back wiring through a power line outlet.

Description

Technical Field

[0001] This utility model relates to the field of servo motor technology, and in particular to an integrated body structure for a servo motor. Background Technology

[0002] A servo motor is a type of motor used for precise control of mechanical motion, widely used in automation and robotics. It can precisely control position, speed, and acceleration, and typically consists of a motor, a driver, and a feedback system (such as an encoder). Its operating principle is based on a closed-loop control system. The motor receives a signal from the controller, indicating the position or speed the motor should achieve. The encoder inside the motor provides real-time feedback to ensure the motor moves precisely according to the instructions. If there is a discrepancy between the motor's actual position and the commanded position, the controller adjusts the motor's input to reduce the error.

[0003] Chinese utility model patent CN214205151U discloses a servo motor housing. The housing is a one-piece structure, consisting of an outer ring and an inner ring, with the outer ring being shorter than the inner ring. The outer ring has a square surface with chamfered corners. The outer and inner ring surfaces are axially formed with cross-shaped grooves. This servo motor housing, composed of the outer and inner rings, forms a cavity for mounting the stator and rotor. It also requires additional components such as a front end cover and bearings to clamp the rotor's front end. Furthermore, the connection between the front and rear end covers requires long bolts for locking, resulting in a complex structure, numerous components, heavy weight, and difficulty in ensuring precise rotor installation.

[0004] Therefore, a new technical solution is urgently needed to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to overcome the problems of the prior art and provide an integrated body structure for servo motors. This solves the technical problem that in the prior art, the motor housing needs to be equipped with a front cover to achieve the movable clamping of the front end of the rotor. Furthermore, the connection between the front cover and the rear cover needs to be locked with long bolts, which not only makes the structure complex, but also involves many assembled parts, heavy weight, and cannot ensure the precise installation of the rotor.

[0006] The above objectives are achieved through the following technical solutions:

[0007] A servo motor integrated housing structure includes a housing cylinder with a front cover. A circular through hole is provided at the axial center of the front cover. An oil seal ring groove, a bearing ring groove, and a glue-holding ring groove are sequentially arranged from the outside to the inside along the inner wall of the circular through hole. An axial limiting flange for the stator core is also provided on the inner wall of the housing cylinder near the front cover. Several rear cover connecting bosses are symmetrically arranged on the outer wall of the housing cylinder near the rear port. Screw holes for connecting to the rear cover are provided on the outer side of the rear cover connecting bosses. A power cable box mounting position is provided on the top of each rear cover connecting boss. A power cable outlet and a grounding screw hole are provided on the power cable box mounting position, which can pass through the rear cover connecting boss and the housing cylinder.

[0008] Furthermore, the roughness of the oil seal ring groove is Ra1.6 to Ra3.2.

[0009] Furthermore, the axial limiting flange of the stator core is machined with a relief groove on the side facing the stator core.

[0010] Furthermore, a number of inner reinforcing ribs are provided between the inner wall of the axial limiting flange of the stator core and the outer wall of the bearing annular groove, and the inner reinforcing ribs are also fixedly connected to the inner wall of the front cover.

[0011] Furthermore, the front cover is a square flange plate, and a flange stop with the same center as the oil seal ring groove is provided on the outer side of the front cover.

[0012] Furthermore, mounting holes are provided at the corners of the front cover.

[0013] Furthermore, an outer reinforcing rib is provided between the outer wall of the oil seal ring groove and the outer wall of the flange stop.

[0014] Furthermore, there are four rear cover connecting bosses, which are equally spaced on the outer wall of the housing cylinder. The rear port of the housing cylinder and the outer side of each rear cover connecting boss form a rear cover mating surface.

[0015] Furthermore, the power cable box mounting position is provided with cable box screw holes for easy connection of power cable box screws.

[0016] Furthermore, a rear cover stop is provided on the inner wall of the housing near the rear port.

[0017] This utility model provides an integrated chassis structure for a servo motor. The square flange face and the regular shape of the rear end of the chassis ensure stable placement of the flange motor. The cylindrical structure in the middle reduces the weight of the chassis, thereby lowering its cost. This chassis structure is not only simple but also allows for rapid and precise assembly of subsequent stator and rotor components. A single movable rear cover is sufficient for sealing, and the power line outlet allows for front and rear wiring. Attached Figure Description

[0018] Figure 1 This is a first-view structural diagram of an integrated chassis structure for a servo motor according to the present invention;

[0019] Figure 2 This is a second-view structural diagram of an integrated chassis structure for a servo motor according to the present invention;

[0020] Figure 3 This is a first-view sectional view of an integrated chassis structure for a servo motor according to the present invention.

[0021] Figure 4 This is a second-view sectional view of the integrated chassis structure for a servo motor described in this utility model.

[0022] Illustration markings:

[0023] 1-Front cover, 2-Housing cylinder, 3-Circular through hole, 4-Oil seal ring groove, 5-Bearing ring groove, 6-Glue holding ring groove, 7-Stator core axial limiting flange, 8-Rear port, 9-Rear cover connecting boss, 10-Screw hole, 11-Power cable box mounting position, 12-Cable box screw hole, 13-Power cable outlet, 14-Grounding screw hole, 15-Undrill groove, 16-Inner reinforcing rib, 17-Outer reinforcing rib, 18-Flange flange stop, 19-Mounting hole, 20-Rear cover stop. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] like Figures 1-4As shown, this solution provides an integrated chassis structure for a servo motor, including a housing cylinder 2 with a front cover 1. A circular through hole 3 is provided at the axial position of the front cover 1. An oil seal ring groove 4, a bearing ring groove 5, and a glue-holding ring groove 6 are arranged sequentially from the outside to the inside along the inner wall of the circular through hole 3. An axial limiting flange 7 of the stator core is also provided on the inner wall of the housing cylinder 2 near the front cover 1.

[0026] The outer wall of the housing 2 is symmetrically provided with a number of rear cover connecting bosses 9 near the rear port 8, and the outer side of the rear cover connecting bosses 9 is provided with screw holes 10 that can be connected to the rear cover.

[0027] The top of any of the rear cover connecting bosses 9 is provided with a power cable box mounting position 11, and a power cable outlet 13 and a grounding screw hole 14 are provided on the power cable box mounting position 11 to pass through the rear cover connecting boss 9 and the housing cylinder 2; a cable box screw hole 12 is provided on the power cable box mounting position 11 to facilitate the connection of the power cable box screw.

[0028] In this embodiment, the front cover 1, the housing cylinder 2, and the rear cover connecting boss 9 are integrally formed and made of aluminum alloy, such as recycled cast aluminum alloy ADC12. The bearing ring groove is used to embed the outer ring of the bearing, while the inner ring of the bearing is sleeved with the rotor shaft, thereby achieving stable support for the rotor and a stable movable connection between the rotor and the front cover.

[0029] The oil seal ring groove 4 is used to inject oil to seal the inside of the machine body cylinder, and the glue ring groove 6 is used to apply glue to fix the outer ring of the bearing axially and prevent it from shifting. Loctite 648 glue can be selected.

[0030] Furthermore, the axial limiting flange 7 of the stator core ensures that the stator core is in the correct position during assembly, thereby ensuring that the performance of the motor is not affected.

[0031] It should be noted that the machining roughness of the oil seal ring groove 4 described in this embodiment is limited to Ra1.6 to Ra3.2. This limitation can ensure that the oil seal will not fall off during rotor operation.

[0032] In addition, a relief groove 15 is machined on the side of the stator core axial limiting flange 7 facing the stator core to ensure that the stator core and the stator core axial limiting flange 7 are in complete contact, thereby ensuring that the stator core can be firmly fixed and preventing gaps from causing vibration during operation.

[0033] like Figure 4As shown, in this embodiment, a plurality of inner reinforcing ribs 16 are provided between the inner wall of the stator core axial limiting flange 7 and the outer wall of the bearing annular groove 5. The inner reinforcing ribs 16 are also fixedly connected to the inner wall of the front cover 1, thereby achieving stable support for the bearing annular groove 5. As a specific embodiment of this solution, there are 6 inner reinforcing ribs 16, which are equally spaced between the inner wall of the stator core axial limiting flange 7 and the outer wall of the bearing annular groove 5.

[0034] The front cover 1 is a square flange plate, and a flange flange stop 18 with the same center as the oil seal ring groove 4 is provided on the outer side of the front cover 1 to achieve positioning and centering, and improve the rigidity and stability of the connection with external components.

[0035] In addition, mounting holes 19 are provided at the corners of the front cover 1 to facilitate connection and fixation with external components.

[0036] In this embodiment, an outer reinforcing rib 17 is further provided between the outer wall of the oil seal ring groove 4 and the outer wall of the flange stop 18 to improve the strength of the oil seal ring groove 4. As a specific embodiment of this solution, three outer reinforcing ribs 17 are equally spaced between the outer wall of the oil seal ring groove 4 and the outer wall of the flange stop 18.

[0037] As a specific embodiment of this solution, there are four rear cover connecting bosses 9, which are equally spaced on the outer wall of the housing cylinder 2. The rear port of the housing cylinder 2 and the outer side of each rear cover connecting boss 9 form a rear cover mating surface. The rear cover is quickly connected to the housing cylinder 2 by connecting screws to the screw holes 10.

[0038] The inner wall of the housing 2 is provided with a rear cover stop 20 near the rear port 8 to facilitate the positioning and centering of the rear cover, thereby enabling quick connection.

[0039] The above description is only for illustrating the embodiments of this utility model and is not intended to limit this utility model. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A unibody structure for a servo motor, characterized in that, The application relates to a machine shell cylinder (2) comprising a front cover (1), wherein a circular through hole (3) is arranged at the center of the front cover (1), an oil seal ring groove (4), a bearing ring groove (5) and a glue containing ring groove (6) are sequentially arranged on the inner wall of the circular through hole (3) from outside to inside, and a stator core axial limiting flange (7) is arranged on the inner wall of the machine shell cylinder (2) and adjacent to the front cover (1). A plurality of rear cover connecting bosses (9) are symmetrically arranged on the outer wall of the machine shell cylinder (2) and adjacent to a rear port (8), and screw holes (10) capable of being connected with rear covers are arranged on the outer side of the rear cover connecting bosses (9). A power line box mounting position (11) is arranged on the top of any rear cover connecting boss (9), and a power line outlet (13) and a grounding screw hole (14) capable of penetrating the rear cover connecting boss (9) and the machine shell cylinder (2) are arranged on the power line box mounting position (11).

2. The one-piece machine structure for a servo motor according to claim 1, wherein The roughness of the oil seal ring groove (4) is Ra1.6-Ra3.

2.

3. The one-piece machine structure for a servo motor of claim 1, wherein A tool withdrawal groove (15) is arranged on the side of the stator core axial limiting flange (7) facing the stator core.

4. The one-piece machine structure for a servo motor according to claim 1, wherein A plurality of inner reinforcing ribs (16) are arranged between the inner wall of the stator core axial limiting flange (7) and the outer wall of the bearing ring groove (5), and the inner reinforcing ribs (16) are fixedly connected with the inner wall of the front cover (1).

5. The one-piece machine structure for a servo motor according to claim 1 or 4, wherein The front cover (1) is a square flange plate, and a flange flange stop (18) with the same center as the oil seal ring groove (4) is arranged on the outer side of the front cover (1).

6. The one-piece machine structure for a servo motor according to claim 5, wherein Mounting holes (19) are further arranged at the corners of the front cover (1).

7. The one-piece machine structure for a servo motor according to claim 5, wherein Outer reinforcing ribs (17) are further arranged between the outer wall of the oil seal ring groove (4) and the outer wall of the flange flange stop (18).

8. The one-piece machine structure for a servo motor of claim 1, wherein The rear cover connecting bosses (9) are four in number and are equidistantly arranged on the outer wall of the machine shell cylinder (2), and the rear port of the machine shell cylinder (2) and the outer side of each rear cover connecting boss (9) form a rear cover matching surface.

9. The one-piece machine structure for a servo motor according to claim 1 or 8, wherein Line box screw holes (12) for facilitating screw connection of a power line box are arranged on the power line box mounting position (11).

10. The one-piece machine structure for a servo motor of claim 1, wherein A rear cover stop portion (20) is arranged on the inner wall of the machine shell cylinder (2) and adjacent to the rear port (8).

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