A machining fixture for a motor housing

Abstract

The utility model relates to motor casing processing technical field proposes a kind of processing fixture of motor casing, including base, centre axle and multiple expansion blocks, the centre axle is passed and is slidably arranged on the base;The expansion block is slidably arranged on the base, and is abutting with the side wall of the centre axle;It further includes sealing disc, the centre axle and the base form sliding cavity, the sealing disc is fixedly arranged on the centre axle, and is slidably arranged in the sliding cavity;Air inlet hole is further provided on the base, the air inlet hole is communicated with the sliding cavity, and located one side of the sealing disc. The utility model is by setting sealing disc on centre axle, and let sealing disc slidably arranged in sliding cavity in base, utilize the communication of air inlet hole and gas supply device, can drive sealing disc to move, to control expansion block to hold motor casing, to improve the processing efficiency of motor casing.

Description

Technical Field

[0001] This utility model relates to the field of motor housing processing technology, and in particular to a processing fixture for motor housings. Background Technology

[0002] In the motor manufacturing industry, the machining of the motor housing is a crucial step. As one of the core components of a motor, the machining precision and surface quality of the motor housing directly affect the overall performance and service life of the motor.

[0003] Utility model patent CN221658007U discloses a motor housing clamp and processing device, comprising: an expansion sleeve, the other end of which is connected to a radially deformable body, the radially deformable body having several through grooves evenly distributed along its circumference, and a tapered hole provided inside the other end of the expansion sleeve; and an inner expansion core movably fitted inside the expansion sleeve, one end of which is connected to a tapered portion, the tapered portion and the tapered hole cooperating. The technical advantage of this utility model is that it provides good clamping stability for the motor housing.

[0004] The above technical solution uses the method of pushing the inner expansion core to clamp and fix the motor housing. However, this technical solution can only be applied to motor housings that are open at both ends. When fixing a housing that is open at one end and closed at the other end or has a very small inner diameter, the housing covers the inner expansion core, making it inconvenient to push the inner expansion core and thus hindering the improvement of the processing efficiency of the motor housing. Utility Model Content

[0005] In view of this, the present invention proposes a machining fixture for motor housing, which can realize the rapid movement of the expansion block and improve the machining efficiency of motor housing.

[0006] The technical solution of this utility model is achieved as follows: This utility model provides a machining fixture for an electric motor housing, including a base, a central shaft, and multiple expansion blocks, wherein... The central shaft passes through and slides on the base, and its sidewalls are tapered. The expansion block is slidably disposed on the base and abuts against the side wall of the central shaft. A plurality of the expansion blocks are arranged in a circumferential array around the axis of the central shaft to abut against the inner wall of the motor housing. It also includes a sealing disc, wherein the central shaft and the base form a sliding cavity, the sealing disc is fixedly mounted on the central shaft and slidably mounted in the sliding cavity; The base is also provided with an air inlet, which is connected to the sliding cavity and located on one side of the sealing disc.

[0007] Based on the above technical solutions, preferably, a cavity is formed on the bottom side of the motor housing; The outer diameter of the top end of the central shaft is smaller than the outer diameter of its bottom end, and the side of the expansion block away from the central shaft abuts against the side wall inside the cavity.

[0008] More preferably, the top side of the cavity is provided with a protrusion; The top end of the central shaft is provided with a snap-fit ​​hole, and the protrusion is snapped into the snap-fit ​​hole.

[0009] Based on the above technical solutions, preferably, a clamping mechanism is also included, wherein two ear plates are provided on the periphery of the motor housing, and the clamping mechanism is used to hold the ear plates.

[0010] More preferably, the clamping mechanism includes a clamping seat, a fixing seat, and a supporting rod, wherein, Both the clamping seat and the fixing seat are fixedly mounted on the base; The abutting rod is slidably disposed within the fixed seat, and the ear plate is abutting between the clamping seat and the abutting rod.

[0011] More preferably, the fixing base has a driving hole, which is connected to the end of the abutment rod away from the ear plate.

[0012] More preferably, the abutment rod includes a sliding rod and an adjusting rod, wherein, The sliding rod is slidably disposed within the fixed base; One end of the adjusting rod is threadedly connected to the sliding rod, and the other end abuts against the ear plate.

[0013] More preferably, the clamping mechanism includes a plurality of anti-fooling rods, each anti-fooling rod having a fixing hole, the fixing hole being fixedly connected to the base by bolts; The ear plate is abutted between two adjacent anti-fouling rods.

[0014] More preferably, the axis of the fixing hole is parallel to and spaced apart from the axis of the anti-fool rod.

[0015] Based on the above technical solutions, preferably, it also includes a plurality of elastic pads, which are fixedly disposed on the base. The plurality of elastic pads are arranged in a circumferential array around the axis of the central axis, and the plurality of elastic pads are alternately disposed with the plurality of expansion blocks.

[0016] The machining fixture for motor housings provided by this utility model has the following advantages over the prior art: (1) By setting a sealing disc on the central shaft and allowing the sealing disc to slide in the sliding cavity in the base, the sealing disc can be driven to move by the connection between the air inlet and the air supply device, so as to control the expansion block to resist the motor housing, thereby improving the processing efficiency of the motor housing.

[0017] (2) By setting clamping seats, fixing seats and abutting rods, the ear plates on the motor housing can be clamped. By setting multiple anti-fooling rods, not only can the motor housing be positioned, but the ear plates of the motor housing can also be fixed, thereby improving the fixing firmness of the motor housing. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of a machining fixture for an electric motor housing according to the present invention.

[0020] Figure 2 This is a cross-sectional view of a machining fixture for an electric motor housing according to the present invention.

[0021] Figure 3 This is a top view of the expansion block in a machining fixture for an electric motor housing according to this utility model.

[0022] Figure 4 This is a top view of a machining fixture for an electric motor housing according to the present invention.

[0023] Figure 5 This is a cross-sectional view of the abutment rod in a machining fixture for an electric motor housing according to this utility model.

[0024] Figure 6 This is a perspective view of the motor housing in a machining fixture for a motor housing according to the present invention.

[0025] The components are as follows: 1. Base; 101. Sliding cavity; 102. Air inlet; 2. Central shaft; 201. Snap-fit ​​hole; 3. Sealing plate; 4. Expansion block; 5. Clamping mechanism; 51. Clamping seat; 52. Fixed seat; 53. Support rod; 54. Anti-fool rod; 531. Sliding rod; 532. Adjusting rod; 501. Fixed hole; 502. Drive hole; 6. Elastic pad; 7. Motor housing; 701. Cavity; 702. Protrusion; 703. Ear plate. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] like Figure 6 As shown, the motor housing 7 is a circular cover structure with a cavity 701 at its bottom for installing components such as the core; a protrusion 702 is integrally formed on the top side of the cavity 701. The protrusion 702 is a cylindrical structure located in the middle of the cavity 701 and extends out a certain length, through which the output shaft of the motor can pass; an ear plate 703 is also fixedly provided on the periphery of the motor housing 7 to fix the motor housing 7.

[0028] This utility model discloses a machining fixture for a motor housing, comprising a base 1, a central shaft 2, a sealing disc 3, an expansion block 4, a clamping mechanism 5, and an elastic pad 6, used to clamp and fix the motor housing 7 for machining.

[0029] Expansion block 4 is the clamping mechanism of this fixture, such as... Figure 2 and Figure 4 As shown, the central shaft 2 passes through and is slidably mounted on the base 1, and the expansion block 4 is slidably mounted on the base 1 along the radial direction of the central shaft 2. The side wall of the central shaft 2 is conical, and the expansion block 4 abuts against the side wall of the central shaft 2. As the central shaft 2 moves, the expansion block 4 can be driven to slide.

[0030] Multiple expansion blocks 4 are provided, and the multiple expansion blocks 4 are arranged in a circular array around the axis of the central axis 2, such as... Figure 2 As shown, preferably, the outer diameter of the top end of the central shaft 2 is smaller than the outer diameter of its bottom end, and the side of the expansion block 4 away from the central shaft 2 abuts against the side wall inside the cavity 701. When the motor housing 7 is placed on the outside of the multiple expansion blocks 4 and the central shaft 2 is moved upward, the side wall of the central shaft 2 can push the multiple expansion blocks 4, causing the multiple expansion blocks 4 to slide away from the central shaft 2, so that the side of the multiple expansion blocks 4 away from the central shaft 2 abuts against the inner wall of the cavity 701 to hold and fix the motor housing 7; when the central shaft 2 is moved downward, the side of the expansion block 4 away from the inner wall of the cavity 701 no longer abuts against the central shaft 2, so the expansion block 4 will not continue to abut against the motor housing 7, and the motor housing 7 can be removed from the fixture.

[0031] The central shaft 2 and the base 1 enclose a sliding cavity 101. A sealing disc 3 is fixedly mounted on the central shaft 2 and slidably disposed within the sliding cavity 101. An air inlet 102 is also provided on the base 1, communicating with the sliding cavity 101 and located on one side of the sealing disc 3. The sealing disc 3 seals against the inner wall of the sliding cavity 101. Figure 2 As shown, when high-pressure gas is introduced into the air inlet 102, the sealing disc 3 and the central shaft 2 can be pushed upward, thereby allowing multiple expansion blocks 4 to abut against the motor housing 7. When high-pressure gas is not introduced into the air inlet 102, the sealing disc 3 and the central shaft 2 can be pushed downward by the gravity of the sealing disc 3 and the central shaft 2 or by the squeezing of the expansion blocks 4, thereby allowing the multiple expansion blocks 4 to separate from the motor housing 7 and remove the motor housing 7.

[0032] like Figure 2 As shown, the top of the central shaft 2 is provided with a snap-fit ​​hole 201. When the central shaft 2 moves upward and the multiple expansion blocks 4 abut against the inner wall of the cavity 701, the protrusion 702 snaps into the snap-fit ​​hole 201, thereby improving the fixation of the motor housing 7.

[0033] like Figure 1 and Figure 4 As shown, the clamping mechanism 5 includes a clamping seat 51, a fixing seat 52, a holding rod 53 and a foolproof rod 54, which are used to hold the ear plate 703 and improve the anti-rotation performance of the motor housing 7.

[0034] like Figure 3 and Figure 4 As shown, the clamping seat 51 and the fixed seat 52 are both fixedly mounted on the base 1. The abutment rod 53 is slidably mounted inside the fixed seat 52. When the motor housing 7 is fixed by multiple expansion blocks 4, the ear plate 703 can be abutted between the clamping seat 51 and the abutment rod 53 by sliding the abutment rod 53, thereby abutting and fixing one of the ear plates 703.

[0035] Multiple anti-fool rods 54 are provided, each with a fixing hole 501. Bolts pass through the fixing holes 501 and are connected to the base 1 via threaded engagement. The bolts are positioned to hold the end of the anti-fool rod 54 away from the base 1, thus securing the anti-fool rod 54 and the base 1. Figure 4 As shown, multiple anti-misalignment rods 54 are spaced apart, and another ear plate 703 can be abutted between two adjacent anti-misalignment rods 54 to limit the other ear plate 703 and improve the anti-rotation performance of the motor housing 7; at the same time, the anti-misalignment rods 54 can also position the motor housing 7 to improve the accuracy of the fixed position of the motor housing 7.

[0036] like Figure 5As shown, the fixed base 52 has a drive hole 502. The drive hole 502 is connected to the end of the abutment rod 53 away from the ear plate 703. When high-pressure gas is input into the drive hole 502, the abutment rod 53 can be pushed to the left to abut the ear plate 703. When high-pressure gas is not input into the drive hole 502, the sliding abutment rod 53 can be moved to the right to separate the abutment rod 53 from the ear plate 703.

[0037] like Figure 5 As shown, the abutment rod 53 includes a sliding rod 531 and an adjusting rod 532. One end of the sliding rod 531 is slidably disposed in the fixed seat 52, and one end of the adjusting rod 532 is connected to the end of the sliding rod 531 away from the fixed seat 52 by a threaded connection. When high-pressure gas is input into the drive hole 502, the end of the adjusting rod 532 away from the sliding rod 531 can be driven to abut against the ear plate 703.

[0038] Since the adjusting rod 532 and the sliding rod 531 are connected by a threaded connection, when fixing different motor housings 7, the overall length of the supporting rod 53 can be adjusted by rotating the adjusting rod 532, thereby improving its adaptability.

[0039] like Figure 4 As shown, the axis of the fixing hole 501 is parallel to and spaced apart from the axis of the anti-fool rod 54, that is, the fixing hole 501 and the anti-fool rod 54 are eccentrically set. When the bolt in the fixing hole 501 is loosened and the anti-fool rod 54 is rotated, the distance between the periphery of the anti-fool rod 54 and the side wall of the motor housing 7 can be adjusted, thereby clamping motor housings 7 of different specifications.

[0040] like Figure 3 As shown, the elastic pad 6 is fixedly installed on the base 1. There are multiple elastic pads 6 arranged in a circumferential array around the axis of the central shaft 2. The multiple elastic pads 6 are alternately arranged with multiple expansion blocks 4. The elastic pads 6 are made of elastic material and can elastically contract. When the motor housing 7 is put on the outside of the elastic pads 6, the motor housing 7 can be pre-fixed.

[0041] The method of using the machining fixture for motor housing according to this utility model is as follows: First, place the motor housing 7 on the outside of the expansion block 4 and the elastic pad 6, and position one of the ear plates 703 between the two adjacent anti-fouling rods 54. Then, input high-pressure gas into the air inlet 102 to drive the central shaft 2 and the sealing disc 3 to slide upward, thereby pushing the expansion block 4 to hold the motor housing 7. Finally, input high-pressure gas into the drive hole 502 to drive the holding rod 53 to hold and fix the other ear plate 703, thus fixing the motor housing 7 for processing. After the motor housing 7 is processed, stop supplying air to the air inlet 102 and the drive hole 502, and then remove the motor housing 7.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A machining fixture for an electric motor housing, comprising a base (1), a central shaft (2), and a plurality of expansion blocks (4), wherein, The central shaft (2) passes through and is slidably disposed on the base (1), and its sidewall is conical; The expansion block (4) is slidably disposed on the base (1) and abuts against the side wall of the central shaft (2). A plurality of expansion blocks (4) are arranged in a circumferential array around the axis of the central shaft (2) to abut against the inner wall of the motor housing (7). The feature is that it also includes a sealing disk (3), the central shaft (2) and the base (1) surround to form a sliding cavity (101), the sealing disk (3) is fixedly disposed on the central shaft (2) and slidably disposed in the sliding cavity (101); The base (1) is also provided with an air inlet (102), which is connected to the sliding cavity (101) and located on one side of the sealing disc (3).

2. The machining fixture for an electric motor housing as described in claim 1, characterized in that: A cavity (701) is provided on the bottom side of the motor housing (7). The outer diameter of the top end of the central shaft (2) is smaller than the outer diameter of its bottom end, and the side of the expansion block (4) away from the central shaft (2) abuts against the side wall inside the cavity (701).

3. The machining fixture for an electric motor housing as described in claim 2, characterized in that: The cavity (701) has a protrusion (702) on the top side. The top end of the central shaft (2) is provided with a snap-fit ​​hole (201), and the protrusion (702) snaps into the snap-fit ​​hole (201).

4. The machining fixture for an electric motor housing as described in claim 1, characterized in that: It also includes a clamping mechanism (5), on which two ear plates (703) are provided on the periphery of the motor housing (7), and the clamping mechanism (5) is used to hold the ear plates (703).

5. The machining fixture for an electric motor housing as described in claim 4, characterized in that: The clamping mechanism (5) includes a clamping seat (51), a fixing seat (52), and a supporting rod (53), wherein, Both the clamping seat (51) and the fixing seat (52) are fixedly mounted on the base (1); The abutting rod (53) is slidably disposed within the fixed seat (52), and the ear plate (703) is abutting between the clamping seat (51) and the abutting rod (53).

6. The machining fixture for an electric motor housing as described in claim 5, characterized in that: The fixed base (52) has a drive hole (502) and the drive hole (502) is connected to the end of the abutment rod (53) away from the ear plate (703).

7. The machining fixture for an electric motor housing as described in claim 6, characterized in that: The abutment rod (53) includes a sliding rod (531) and an adjusting rod (532), wherein, The sliding rod (531) is slidably disposed within the fixed base (52); One end of the adjusting rod (532) is connected to the sliding rod (531) by a threaded connection, and the other end abuts against the ear plate (703).

8. The machining fixture for an electric motor housing as described in claim 4, characterized in that: The clamping mechanism (5) includes multiple anti-fool rods (54), and the anti-fool rods (54) are provided with fixing holes (501). The fixing holes (501) are fixedly connected to the base (1) by bolts. The ear plate (703) is abutted between two adjacent anti-fouling rods (54).

9. The machining fixture for an electric motor housing as described in claim 8, characterized in that: The axis of the fixing hole (501) is parallel to and spaced apart from the axis of the anti-fool rod (54).

10. The machining fixture for an electric motor housing as described in claim 1, characterized in that: It also includes multiple elastic pads (6), which are fixedly mounted on the base (1). The multiple elastic pads (6) are arranged in a circumferential array around the axis of the central axis (2), and the multiple elastic pads (6) are alternately arranged with the multiple expansion blocks (4).

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