CN215572644U

CN215572644U - A press from both sides cover for motor casing concentricity detects

Info

Publication number: CN215572644U
Application number: CN202122073982.5U
Authority: CN
Inventors: 黄强; 李雪风
Original assignee: Suzhou Jieerli Industrial Co ltd
Current assignee: Suzhou Jieerli Industrial Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-01-18
Anticipated expiration: 2031-08-31

Abstract

The utility model relates to a jacket for detecting concentricity of a motor casing, which comprises a taper pull rod, an elastic support rod and a locking nut, wherein the elastic support rod comprises a round rod body and a plurality of support blocks uniformly arranged at the top of the round rod body along the circumferential direction, a cutting seam is reserved between the adjacent support blocks, the outer contours of the plurality of support blocks are integrally cylindrical, a taper hole, a pull rod hole and a locking hole are formed in the elastic support rod, the taper hole and the locking hole are connected and arranged in the plurality of support blocks, the pull rod hole penetrates through the round rod body and extends into the bottoms of the plurality of support blocks to be communicated with the locking hole, the taper pull rod is slidably inserted in the elastic support rod, the taper pull rod comprises a taper top block and an anti-rotation pull rod, the anti-rotation pull rod is non-rotatably inserted in the pull rod hole, the taper top block is arranged at one end of the anti-rotation pull rod, and the conical ejector block is just inserted into the conical hole, and the other end of the anti-rotation pull rod is provided with a thread extending out of the pull rod hole and is screwed in the locking nut. The jacket for detecting the concentricity of the motor shell is convenient to use and is beneficial to improving the detection precision.

Description

A press from both sides cover for motor casing concentricity detects

Technical Field

The utility model belongs to the technical field of high-precision detection of motor parts, and particularly relates to a jacket for detecting concentricity of a motor shell.

Background

Generally, the motor casing is generally cylindrical and includes an inner cylindrical surface, and other components of the motor are mounted in the motor casing, and the motor casing is generally provided with a mounting hole for a motor shaft. For some small micro motors, the motor casing is generally made by a stretching process, the mounting holes on the motor casing are also made by stretching, concentricity errors are generally easily generated between the mounting holes made by the stretching process and the inner cylindrical surface, namely the mounting holes and the inner cylindrical surface are easily eccentric, the eccentricity can generate bad influence on the normal operation of the motor, the service life of the motor is shortened, and therefore timely detection and timely production process adjustment are needed in production.

The existing detection mode is generally to sleeve a motor casing on a cylindrical clamping rod, and then clamp the clamping rod between a pinch roller and a parallel roller on a concentricity measuring instrument to detect the concentricity of the motor casing. However, if the selected cylindrical clamping rod is slightly larger, the cylindrical clamping rod is difficult to insert into the motor shell; if slightly smaller, there is a gap affecting the measurement; the machining difficulty is too high when the plug-in connector is just machined, and the plug-in connector is easy to wear after being pulled out for many times. Therefore, it becomes difficult to fix the motor case conveniently and quickly without affecting the measurement accuracy of concentricity.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a jacket for detecting the concentricity of a motor casing.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a jacket for detecting concentricity of a motor shell comprises a taper pull rod, an elastic support rod and a locking nut, wherein the elastic support rod comprises a round rod body and a plurality of support blocks, the plurality of support blocks are uniformly arranged at the top of the round rod body along the circumferential direction, a cutting seam is reserved between every two support blocks, the outer contour of each support block is integrally cylindrical, a taper hole, a pull rod hole and a cylindrical locking hole are formed in the elastic support rod, the taper hole is formed in the upper part of each support block, the locking hole is close to one side, close to the round rod body, of the taper hole, the diameter of the locking hole is not smaller than that of the part, connected with the locking hole, of the taper hole, the pull rod hole penetrates through the round rod body, the taper hole is communicated with the locking hole, the center line of the taper hole and the center line of the round rod body coincide, the taper pull rod is slidably inserted in the elastic support rod, the taper pull rod comprises a taper top block and an anti-rotation pull rod, the anti-rotation pull rod is inserted in the locking hole and the pull rod hole, the toper kicking block sets up in the one end of preventing changeing the pull rod, and the toper kicking block just inserts and establish in the bell mouth, prevents changeing the other end of pull rod and has the screw thread that extends the pull rod hole, and lock nut includes the screw thread through-hole, prevents changeing the one end of taking the screw thread on the pull rod and connects in the screw thread through-hole soon.

Optionally, the diameter of the outer contour of the plurality of supporting blocks is larger than the outer diameter of the round rod body.

Optionally, the plurality of supporting blocks comprises eight supporting blocks with the same size.

Optionally, the cross-sectional shapes of the anti-rotation pull rod and the pull rod hole are non-circular.

Preferably, the cross-sectional shapes of the anti-rotation pull rod and the pull rod hole are D-shaped.

Optionally, the tapered pull rod is an integrally formed member.

Optionally, the elastic support bar is an integrally formed member.

Optionally, the aperture of the locking hole is equal to the aperture of the joint of the tapered hole and the locking hole.

Optionally, the outer profile of the lock nut is cylindrical.

Preferably, the outer diameter of the lock nut is equal to or less than the outer diameter of the round rod body.

Compared with the prior art, the jacket for detecting the concentricity of the motor shell provided by the utility model has the advantages that the concentricity of the jacket and the inner cylindrical surface of the motor shell is ensured by arranging the expandable support block, the fixation of the motor shell during detection is facilitated, and the detection precision of the concentricity during measurement is improved.

Drawings

Fig. 1 is a schematic structural diagram of a jacket for concentricity detection of a motor casing according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of an elastic supporting rod according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of an elastic supporting rod according to another embodiment of the present invention;

FIG. 4 is a schematic structural view of a taper pull rod according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a taper pull rod according to another embodiment of the present invention;

FIG. 6 is a schematic structural view of a lock nut according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a lock nut according to another view of the present invention.

Detailed Description

In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1, a jacket 100 for detecting concentricity of a motor casing includes an elastic support rod 1, a taper pull rod 2, and a lock nut 3.

As shown in fig. 2 and 3, the elastic support rod 1 includes a circular rod body 11 and a plurality of support blocks 12, the plurality of support blocks 12 are uniformly arranged at the top of the circular rod body 11 along the circumferential direction, a cutting seam 121 is left between adjacent support blocks 12, the outer contour of each of the plurality of support blocks 12 is generally cylindrical, a tapered hole 13, a pull rod hole 14 and a cylindrical locking hole 15 are formed in the elastic support rod 1, the tapered hole 13 is formed at the upper portion of each of the plurality of support blocks 12, the locking hole 15 is close to one side of the tapered hole 13 close to the circular rod body 11, the aperture of the locking hole 15 is not smaller than the aperture of the tapered hole 13 at the connection portion with the locking hole 15, the pull rod hole 14 penetrates through the circular rod body 11, the pull rod hole 14 penetrates the bottoms of the plurality of support blocks 12 to be communicated with the locking hole 15, and the center lines of the tapered hole 3 and the locking hole 15 coincide with the center line of the circular rod body 11.

As shown in fig. 1, 4 and 5, the taper pull rod 2 is slidably inserted into the elastic support rod 1, the taper pull rod 2 includes a taper top block 21 and an anti-rotation pull rod 22, the anti-rotation pull rod 22 is non-rotatably inserted into the locking hole 15 and the pull rod hole 14, the taper top block 21 is disposed at one end of the anti-rotation pull rod 22, the taper top block 21 is just inserted into the taper hole 13, and the other end of the anti-rotation pull rod 22 is provided with a thread 221 extending out of the pull rod hole 14.

As shown in fig. 1, 6 and 7, the lock nut 3 includes a threaded hole 31, and one end of the anti-rotation tie rod 22 having a thread 221 is screwed into the threaded hole 31.

Optionally, the diameter of the outer contour of the plurality of supporting blocks 12 is larger than the outer diameter of the round rod body 11. Such structure setting is convenient for kicking block 12 top outwards expand, props up and waits to detect the part to guarantee the axiality of motor casing and pole body 11, improve and detect the precision.

Optionally, the plurality of supporting blocks includes eight supporting blocks 12 with the same size, and adjacent supporting blocks 12 are separated by a slit 121. The arrangement gives consideration to the processing difficulty and the processing cost, and each supporting block 12 is not very large and is easy to be supported.

Alternatively, the anti-rotation tie rod 22 and tie rod bore 14 are non-circular in cross-sectional shape. This arrangement effectively prevents the rotation of the rotation prevention lever 22. Preferably, the anti-rotation tie rod 22 and the tie rod hole 14 have a D-shaped cross-section. Such a structure is easy to process.

Optionally, the taper pull rod 2 is an integrally formed component. The structure is stable after the integrated machining, and machining tolerance is easy to control.

Optionally, the elastic support rod 1 is an integrally formed member. The structure is firm after the integration processing like this, and each part concentricity is high, measures more accurately.

Optionally, the diameter of the locking hole 15 is equal to the diameter of the part of the tapered hole 13, which is connected with the locking hole 15. Such a hole diameter can reduce the amount of processing when the support block is supported.

Optionally, the outer contour of the lock nut 3 is cylindrical. Facilitating the machining of the lock nut 3 and the thread. Preferably, the outer diameter of the lock nut 3 is equal to or less than the outer diameter of the round bar body 11. This prevents the detection accuracy from being affected by the rotation of the jacket 100.

The working principle of one embodiment of the utility model is as follows:

during the use, the motor casing cover that awaits measuring is established on a plurality of bracers 12 of elasticity 1 head department, then hold round bar body 11 on one hand, locking nut 3 is rotated to the other hand, when locking nut 3 rotated to withstanding round bar body 11 bottom, the axial of tapering pull rod 2 will receive the pulling force towards locking nut 3, locking nut 3 continues to screw this moment, the bottom of toper kicking block 21 will begin to get into locking hole 15 from bell mouth 13 in, toper kicking block 21 produces pressure to the inner wall conical surface of a plurality of bracers 12 this moment, impel a plurality of bracers 12 outwards to expand, thereby prop up inside the whole motor casing. Then, the round rod body 11 of the jacket on which the motor casing to be detected is fixed can be placed between the pressing wheel and the parallel roller on the concentricity measuring instrument to detect the coaxiality of the motor casing, and the jacket can effectively prevent the cylindrical motor casing from shaking in the radial direction, so that the detection efficiency and precision are improved.

According to the jacket for detecting the concentricity of the motor casing, the concentricity of the jacket and the inner cylindrical surface of the motor casing is ensured by arranging the expandable support block, so that the fixation of the motor casing during detection is facilitated, and the detection precision of the concentricity during measurement is improved.

The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the utility model. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.

Claims

1. A jacket for detecting concentricity of a motor casing is characterized by comprising a taper pull rod, an elastic support rod and a locking nut;

the elastic support rod comprises a round rod body and a plurality of support blocks, wherein the support blocks are uniformly arranged at the top of the round rod body along the circumferential direction, a cutting seam is reserved between every two adjacent support blocks, the outer contour of each support block is integrally cylindrical, a tapered hole, a pull rod hole and a cylindrical locking hole are formed in the elastic support rod, the tapered hole is formed in the upper part of each support block, the locking hole is close to one side, close to the round rod body, of the tapered hole, the aperture of the locking hole is not smaller than that of the position, connected with the locking hole, of the tapered hole, the pull rod hole penetrates through the round rod body, the pull rod hole penetrates deep into the bottoms of the support blocks and is communicated with the locking hole, and the center lines of the tapered hole and the locking hole are overlapped with the center line of the round rod body;

the taper pull rod is slidably inserted into the elastic support rod and comprises a taper ejector block and an anti-rotation pull rod, the anti-rotation pull rod is non-rotatably inserted into the locking hole and the pull rod hole, the taper ejector block is arranged at one end of the anti-rotation pull rod, the taper ejector block is just inserted into the taper hole, and the other end of the anti-rotation pull rod is provided with a thread extending out of the pull rod hole;

the locking nut comprises a thread through hole, and one end with threads on the anti-rotation pull rod is screwed in the thread through hole.

2. The jacket for concentricity detection of a motor casing according to claim 1, wherein the diameter of the outer profile of the plurality of supporting blocks is larger than the outer diameter of the round rod body.

3. The collet for concentricity detection of a motor casing of claim 1, wherein the plurality of brace pieces comprises eight brace pieces of uniform size.

4. The collet for concentricity detection of a motor casing as claimed in claim 1, wherein the cross-sectional shapes of the anti-rotation tie bar and the tie bar hole are non-circular.

5. The collet for concentricity detection of a motor casing as claimed in claim 4, wherein the cross-sectional shapes of the anti-rotation pull rod and the pull rod hole are D-shaped.

6. The collet for concentricity testing of a motor casing of claim 1, wherein the tapered pull rod is an integrally formed member.

7. The collet for concentricity testing of a motor casing of claim 1, wherein the resilient support bar is an integrally formed member.

8. The jacket for concentricity detection of a motor casing as claimed in claim 1, wherein the diameter of the locking hole is equal to the diameter of the tapered hole at the junction with the locking hole.

9. The collet for concentricity testing of a motor casing of claim 1, wherein the lock nut has a cylindrical outer profile.

10. The collet for concentricity detection of a motor casing of claim 9, wherein the lock nut has an outer diameter equal to or less than an outer diameter of the round rod body.