Expansion core for processing seam allowance of motor shell

Abstract

The utility model discloses an expansion core for processing a spigot of a motor casing, which comprises an inner expansion mandrel, an outer expansion cylinder is arranged on the periphery of the inner expansion mandrel, a detachable steel ball cylinder seat is arranged on the end face of the outer expansion cylinder, and a rotatable locking nut is arranged on the steel ball cylinder seat. According to the expansion core for machining the seam allowance of the motor shell, the expansion principle of the outer expansion sleeve is utilized, the structural strength is stable and reliable, the expansion core can be precisely matched with the inner wall of the motor shell, machining can be conducted on a lathe, assembling is convenient, operation is convenient and fast, and practicability is high.

Description

Technical Field

[0001] The utility model relates to a motor processing device, more specifically, to an expansion core for processing the stopper of a motor casing. Background Art

[0002] When processing motors, especially some special servo motors, when processing the stoppers at both ends of the casing, it is difficult to ensure the processing accuracy if the traditional clamping method is used. Utility Model Content

[0003] Based on this, it is necessary to provide a core expansion device for processing the stopper of a motor casing to address the above technical problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] An expansion core for processing the stop of a motor casing, characterized in that the expansion core for processing the stop of a motor casing comprises an inner expansion core shaft, an outer expansion cylinder is provided on the periphery of the inner expansion core shaft, a detachable steel ball cylinder seat is provided on the end surface of the outer expansion cylinder, and a rotatable locking nut is provided on the steel ball cylinder seat.

[0006] As a preferred embodiment of the utility model,

[0007] The inner expansion mandrel comprises a conical inner expansion cone rod, one end of the inner expansion cone rod is provided with a first shaft head, the other end of the inner expansion cone rod is provided with a second shaft head, and the second shaft head is provided with a mandrel external thread.

[0008] The outer expansion cylinder comprises a cylindrical body, the inner wall of which is provided with a conical outer expansion inner wall, and the outer expansion inner wall cooperates with the inner expansion cone rod.

[0009] The steel ball cartridge seat comprises a cylindrical cartridge seat body, an annular steel ball placement ring groove is arranged on the outer wall of the cartridge seat body, a plurality of steel balls are arranged in the steel ball placement ring groove, and an annular cartridge seat installation ring seat is arranged at one end of the cartridge seat body.

[0010] The inner wall of the locking nut is provided with a locking internal thread and an annular steel ball track, the locking internal thread matches the core shaft external thread, and the outer wall of the locking nut is provided with a steel ball installation hole.

[0011] As a preferred embodiment of the utility model, a plurality of expansion joints are provided on the outer wall of the cylinder.

[0012] As a preferred embodiment of the utility model, the cylinder seat mounting ring seat is connected to the outer expansion cylinder through a plurality of connecting screws.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model provides an expansion core for processing the stopper of a motor casing. The expansion core for processing the stopper of the motor casing utilizes the expansion principle of an outer expansion sleeve, has stable and reliable structural strength, can precisely match the inner wall of the motor casing, can be processed on a lathe, is easy to assemble, easy to operate, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the expansion core used for processing the stopper of the motor housing of the utility model;

[0017] Figure 2 for Figure 1 The schematic diagram of the three-dimensional structure of the expansion core used for the motor housing stop processing;

[0018] Figure 3 for Figure 2 A detailed enlarged schematic diagram of area A in FIG.

[0019] Figure 4 It is a schematic diagram of the use of the expansion core for processing the stopper of the motor casing of the utility model;

[0020] Figure 5 for Figure 4 The cross-sectional view of the expansion core along the BB line for the motor housing stop processing;

[0021] The markings in the figure are as follows: 1. Inner expansion mandrel; 10. Inner expansion cone rod; 11. First shaft head; 12. Second shaft head; 2. Outer expansion cylinder; 21. Cylinder body; 22. Outer expansion inner wall; 23. Expansion seam; 3. Steel ball cylinder seat; 310. Cylinder seat body; 311. Steel ball placement ring groove; 32. Cylinder seat mounting ring seat; 33. Connecting screw; 4. Locking nut; 41. Locking internal thread; 42. Steel ball mounting hole; 43. Steel ball track; 5. Steel ball. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0023] like Figures 1 to 3As shown, the expansion core for processing the stop edge of the motor casing includes an inner expansion core shaft 1, an outer expansion cylinder 2 is provided on the periphery of the inner expansion core shaft 1, a detachable steel ball cylinder seat 3 is provided on the end surface of the outer expansion cylinder 2, and a rotatable locking nut 4 is provided on the steel ball cylinder seat 3.

[0024] The inner expansion mandrel 1 comprises a conical inner expansion cone rod 10 , one end of which is provided with a first shaft head 11 , the other end of which is provided with a second shaft head 12 , and the second shaft head 12 is provided with a mandrel external thread 13 .

[0025] The outer expansion cylinder 2 comprises a cylindrical body 21 , on the inner wall of which is provided a conical outer expansion inner wall 22 , which cooperates with the inner expansion cone rod 10 , and on the outer wall of which is provided a plurality of expansion slits 23 .

[0026] The steel ball cartridge seat 3 includes a cylindrical cartridge seat body 310, an annular steel ball placement groove 311 is provided on the outer wall of the cartridge seat body 310, a plurality of steel balls 5 are arranged in the steel ball placement groove 311, and an annular cartridge seat mounting ring seat 32 is provided at one end of the cartridge seat body 310, and the cartridge seat mounting ring seat 32 is connected to the outer expansion cylinder 2 via a plurality of connecting screws 33.

[0027] The inner wall of the locking nut 4 is provided with a locking internal thread 41 and an annular steel ball track 43 . The locking internal thread 41 matches with the core shaft external thread 13 . The outer wall of the locking nut 4 is provided with a steel ball mounting hole 42 .

[0028] The following is an explanation of the use of the expansion core for the motor housing stopper processing, including the following steps:

[0029] Step S1: Figure 4 and Figure 5 As shown, the steel ball track 43 of the locking nut 4 is aligned with the steel ball placement ring groove 311 of the steel ball cylinder seat 3, and the steel balls 5 are placed one by one through the steel ball installation hole 42, so that the steel balls 5 form an arrangement structure on the steel ball track 43, and finally, the steel ball installation hole 42 is sealed;

[0030] Step S2, the motor housing is put on the outer expansion cylinder 2, and the two tops of the lathe lock the inner expansion mandrel 1. At this time, the inner expansion mandrel 1 is stuck by the lathe;

[0031] Step S3, the locking nut 4 is rotated clockwise, and the locking nut 4 transmits thrust through the steel ball 5 to push the outer expansion tube 2 to move axially. Since the inner expansion cone rod 10 of the inner expansion mandrel 1 and the outer expansion inner wall 22 of the outer expansion tube 2 are tapered, the outer expansion tube 2 will expand and press against the inner wall of the motor housing;

[0032] Step S4, after the stopper of the motor housing is processed, the locking nut 4 is rotated counterclockwise, and the steel ball 5 drives the outer expansion tube 2 and the inner expansion core shaft 1 to move relatively away from each other, so that the outer expansion tube 2 will lose its expansion force, thereby causing the outer expansion tube 2 to separate from the processed motor housing.

[0033] The expansion core for processing the stop of the motor casing utilizes the expansion principle of the external expansion sleeve, has stable and reliable structural strength, can be precisely matched with the inner wall of the motor casing, can be processed on a lathe, is easy to assemble, easy to operate, and has strong practicality.

[0034] Without limitation to this, any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope defined in the claims.

Claims

1. An expansion core for processing the stopper of a motor housing, characterized in that: The expansion core for processing the stop edge of the motor housing comprises an inner expansion core shaft (1), an outer expansion cylinder (2) is arranged on the periphery of the inner expansion core shaft (1), a detachable steel ball cylinder seat (3) is arranged on the end surface of the outer expansion cylinder (2), and a rotatable locking nut (4) is arranged on the steel ball cylinder seat (3).

2. The expansion core for processing the stopper of a motor housing according to claim 1, characterized in that: The inner expansion mandrel (1) comprises a conical inner expansion cone rod (10), one end of the inner expansion cone rod (10) is provided with a first shaft head (11), the other end of the inner expansion cone rod (10) is provided with a second shaft head (12), and the second shaft head (12) is provided with a mandrel external thread (13). The outer expansion cylinder (2) comprises a cylindrical body (21), the inner wall of the body (21) is provided with a conical outer expansion inner wall (22), and the outer expansion inner wall (22) cooperates with the inner expansion cone rod (10). The steel ball cartridge seat (3) comprises a cylindrical cartridge seat body (310), an annular steel ball placement ring groove (311) is provided on the outer wall of the cartridge seat body (310), a plurality of steel balls (5) are arranged in the steel ball placement ring groove (311), and an annular cartridge seat installation ring seat (32) is provided at one end of the cartridge seat body (310). The inner wall of the locking nut (4) is provided with a locking internal thread (41) and an annular steel ball track (43), the locking internal thread (41) matches with the core shaft external thread (13), and the outer wall of the locking nut (4) is provided with a steel ball mounting hole (42).

3. The expansion core for processing the stopper of a motor housing according to claim 2, characterized in that: A plurality of expansion joints (23) are arranged on the outer wall of the cylinder (21).

4. The expansion core for processing the stopper of a motor housing according to claim 2, characterized in that: The cylinder seat mounting ring seat (32) is connected to the outer expansion cylinder (2) via a plurality of connecting screws (33).

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