Fastening shaft sleeve for machining fan mandrel

Abstract

The utility model relates to the technical field of mandrel machining, in particular to a fastening shaft sleeve for machining a fan mandrel, which comprises a shaft sleeve body and a tightening jacket, the tightening jacket is fixedly mounted at one end of the shaft sleeve body, the outer diameter of the tightening jacket is gradually reduced, and the outer end of the tightening jacket is in threaded connection with a tightening nut; a tightening nut is screwed on a tightening clamping sleeve to tighten the tightening clamping sleeve, the tightening clamping sleeve clamps one end of a mandrel through an anti-skid pad, and then when a driving rod is held and a driving cylinder is rotated to move towards one side of a push rod, a second guide slope slides on a first guide slope, inward thrust is applied to the first guide slope, and the mandrel is tightened. The clamping plates are separated from the inner wall of the shaft sleeve body and move towards one side of the central spindle, and finally the clamping plates make close contact with the outer wall of the other end of the central spindle through the rubber pads, so that the central spindle is stably clamped, and the central spindle is prevented from shaking when being machined.

Description

Technical Field

[0001] The utility model relates to the technical field of core shaft processing, in particular to a fastening shaft sleeve for processing a fan core shaft. Background Art

[0002] The alloy core shaft is generally cylindrical or conical, and has a through hole along the axial direction. When the alloy core shaft is processed, the outer circle is processed first, and then the inner hole is processed. When processing the inner hole, a sleeve is required.

[0003] However, the current shaft sleeves all have an inner hole in the middle that matches the outer cylindrical surface of the alloy core shaft. The alloy core shaft is inserted into the inner hole and fixed. The inner hole of the shaft sleeve with this structure is only in point contact or line contact with the alloy core shaft. When the inner hole is processed by a machine tool, the alloy core shaft will shake, affecting the coaxiality between the inner hole and the outer circle of the alloy core shaft. Utility Model Content

[0004] The utility model aims to provide a fastening sleeve for processing a fan core shaft, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a fastening sleeve for processing a fan core shaft, comprising: a sleeve body and a tightening sleeve, wherein the tightening sleeve is fixedly mounted on one end of the sleeve body, and the outer diameter of the tightening sleeve gradually decreases, and the outer end of the tightening sleeve is threadedly connected with a tightening nut;

[0006] A plurality of push rods are evenly and slidably connected to the side wall of the sleeve body. The inner ends of the push rods are inserted into the inner end of the sleeve body and fixedly mounted with a clamping plate. A cylinder is movably mounted on the outer end of the sleeve body. The inner wall of the cylinder can be slidably connected to the outer wall of the push rod.

[0007] Preferably, the outer wall of the tightening jacket is provided with an external thread, the inner diameter component of the tightening nut becomes smaller, and the inner wall of the tightening nut is threadedly connected to the outer wall of the tightening jacket through the external thread.

[0008] Preferably, an anti-slip pad is fixedly mounted on the inner end side wall of the tightening jacket.

[0009] Preferably, a plurality of sliding holes corresponding to the push rods are evenly opened on the outer wall of the sleeve body, the outer wall of the push rod and the inner wall of the sliding hole are slidably connected, and a guide slope is opened on one side of the outer end of the push rod.

[0010] Preferably, a rubber pad is fixedly mounted on the outer end of the clamping plate, and a magnet is fixedly mounted on the inner end.

[0011] Preferably, a limiting ring is fixedly mounted on the outer wall of one end of the sleeve body away from the tightening sleeve and a threaded groove is formed, and the threaded groove is located between the limiting ring and the tightening sleeve.

[0012] Preferably, a threaded sleeve is threadedly connected to the outer wall of the sleeve body via a threaded groove, a cylinder is fixedly mounted on one end of the threaded sleeve away from the limiting ring, and a guide slope 2 is provided on the inner side of the outer end of the cylinder.

[0013] Preferably, driving rods are symmetrically fixedly mounted on the outer walls of the left and right ends of the cylinder.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The mandrel to be clamped is inserted into the sleeve body through the tightening sleeve, and the tightening nut is then screwed on the tightening sleeve to tighten the tightening sleeve. The tightening sleeve clamps one end of the mandrel through the anti-slip pad, and then by holding the driving rod and rotating it, the threaded sleeve can be driven to rotate and move on the threaded groove, and the cylinder can be moved synchronously. When the cylinder moves toward one side of the push rod, the guide slope 2 on the cylinder and the guide slope 1 on the push rod will contact each other. When the cylinder continues to move, the guide slope 2 will slide on the guide slope 1, applying an inward thrust to the guide slope 1, so that the clamping plate and the inner wall of the sleeve body are separated and moved to one side of the mandrel. Finally, the rubber pad is in close contact with the outer wall of the other end of the mandrel, so that the mandrel is stably clamped to avoid shaking of the mandrel during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the shaft sleeve of the utility model;

[0018] Figure 3 This is a schematic diagram of the connection between the threaded sleeve and the cylinder of the utility model;

[0019] Figure 4 This is a schematic diagram of the connection between the clamping plate and the push rod in this utility model.

[0020] In the figure: 1. sleeve body; 2. tightening sleeve; 3. external thread; 4. anti-skid pad; 5. tightening nut; 6. sliding hole; 7. push rod; 8. guide slope 1; 9. clamping plate; 10. rubber pad; 11. magnet; 12. threaded sleeve; 13. driving rod; 14. cylinder; 15. guide slope 2; 16. limit ring. DETAILED DESCRIPTION

[0021] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4 The utility model provides a technical solution: a tightening sleeve for processing a fan core shaft, comprising: a sleeve body 1 and a tightening sleeve 2, the tightening sleeve 2 is fixedly installed at one end of the sleeve body 1, and the outer diameter of the tightening sleeve 2 gradually decreases, and an anti-skid pad 4 is fixedly installed on the inner end side wall of the tightening sleeve 2, and an external thread 3 is provided on the outer wall of the tightening sleeve 2. The inner diameter component of the tightening nut 5 becomes smaller, and the inner wall of the tightening nut 5 is threadedly connected to the outer wall of the tightening sleeve 2 through the external thread 3. The core shaft to be clamped is inserted into the sleeve body 1 through the tightening sleeve 2, and then the tightening nut 5 is screwed on the tightening sleeve 2 to tighten the tightening sleeve 2, and the tightening sleeve 2 clamps the core shaft through the anti-skid pad 4.

[0023] A number of push rods 7 are evenly and slidably connected to the side wall of the sleeve body 1, and a number of sliding holes 6 corresponding to the push rods 7 are evenly opened on the outer wall of the sleeve body 1. The outer wall of the push rod 7 and the inner wall of the sliding hole 6 are slidably connected. A guide slope 8 is opened on one side of the outer end of the push rod 7. The inner end of the push rod 7 is inserted into the inner end of the sleeve body 1 and fixedly installed with a clamping plate 9. The clamping plate 9 is arc-shaped, and a rubber pad 10 is fixedly installed on the outer end of the clamping plate 9, and a magnet 11 is fixedly installed on the inner end. The sleeve body 1 is made of magnetic metal, and the clamping plate 9 can be adsorbed on the inner wall of the sleeve body 1 through the magnet 11, so as to facilitate the passage of the core shaft.

[0024] A limit ring 16 is fixedly installed on the outer wall of the end of the sleeve body 1 away from the tightening sleeve 2 and a threaded groove is opened. The threaded groove is located between the limit ring 16 and the tightening sleeve 2. A threaded sleeve 12 is threadedly connected to the outer wall of the sleeve body 1 through the threaded groove. A cylinder 14 is fixedly installed on the end of the threaded sleeve 12 away from the limit ring 16. A guide slope 15 is opened on the inner side of the outer end of the cylinder 14. Driving rods 13 are symmetrically fixedly installed on the outer walls of the left and right ends of the cylinder 14. By holding the driving rod 13 and rotating it, the threaded sleeve 12 can be driven to rotate and move on the threaded groove, and the cylinder 14 can be moved synchronously.

[0025] When the cylinder 14 moves toward one side of the push rod 7, the guide slope 2 15 on the cylinder 14 and the guide slope 1 8 on the push rod 7 will contact each other. When the cylinder 14 continues to move, the guide slope 2 15 will slide on the guide slope 1 8, exerting an inward thrust on the guide slope 1 8, so that the clamping plate 9 and the inner wall of the sleeve body 1 are separated and move toward one side of the core shaft, and finally closely contact the outer wall of the core shaft through the rubber pad 10.

[0026] When in actual use, the mandrel to be clamped is inserted into the sleeve body 1 through the tightening sleeve 2, and then the tightening nut 5 is screwed on the tightening sleeve 2 to tighten the tightening sleeve 2. The tightening sleeve 2 clamps one end of the mandrel through the anti-slip pad 4, and then by holding the driving rod 13 and rotating it, the threaded sleeve 12 can be driven to rotate and move on the thread groove, and the cylinder 14 can be moved synchronously. When the cylinder 14 moves toward one side of the push rod 7, the guide slope 2 15 on the cylinder 14 and the guide slope 1 8 on the push rod 7 will contact each other. When the cylinder 14 continues to move, the guide slope 2 15 will slide on the guide slope 1 8, applying an inward thrust to the guide slope 1 8, so that the clamping plate 9 and the inner wall of the sleeve body 1 are separated and moved to one side of the mandrel, and finally the rubber pad 10 is in close contact with the outer wall of the other end of the mandrel, so that the mandrel is stably clamped.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fastening sleeve for processing a fan core shaft, comprising: The shaft sleeve body (1) and the tightening sleeve (2) are characterized in that: the tightening sleeve (2) is fixedly mounted on one end of the shaft sleeve body (1), and the outer diameter of the tightening sleeve (2) gradually decreases, and the outer end of the tightening sleeve (2) is threadedly connected with a tightening nut (5); A plurality of push rods (7) are evenly and slidably connected to the side wall of the sleeve body (1); the inner ends of the push rods (7) are inserted into the inner end of the sleeve body (1) and fixedly mounted with a clamping plate (9); a cylinder (14) is movably mounted on the outer end of the sleeve body (1); and the inner wall of the cylinder (14) can be slidably connected to the outer wall of the push rod (7).

2. The fastening sleeve for processing a fan core shaft according to claim 1, characterized in that: The outer wall of the tightening sleeve (2) is provided with an external thread (3), the inner diameter component of the tightening nut (5) becomes smaller, and the inner wall of the tightening nut (5) is threadedly connected to the outer wall of the tightening sleeve (2) through the external thread (3).

3. The fastening sleeve for processing a fan core shaft according to claim 1, characterized in that: An anti-slip pad (4) is fixedly mounted on the inner end side wall of the tightening jacket (2).

4. The fastening sleeve for processing a fan core shaft according to claim 3, characterized in that: A plurality of sliding holes (6) corresponding to the push rods (7) are evenly arranged on the outer wall of the shaft sleeve body (1); the outer wall of the push rod (7) and the inner wall of the sliding hole (6) are slidably connected; and a guide slope (8) is arranged on one side of the outer end of the push rod (7).

5. The fastening sleeve for processing a fan core shaft according to claim 4, characterized in that: A rubber pad (10) is fixedly mounted on the outer end of the clamping plate (9), and a magnet (11) is fixedly mounted on the inner end.

6. The fastening sleeve for processing a fan core shaft according to claim 1, characterized in that: A limiting ring (16) is fixedly mounted on the outer wall of one end of the shaft sleeve body (1) away from the tightening sleeve (2) and a thread groove is formed thereon, wherein the thread groove is located between the limiting ring (16) and the tightening sleeve (2).

7. The fastening sleeve for processing a fan core shaft according to claim 6, characterized in that: A threaded sleeve (12) is threadedly connected to the outer wall of the shaft sleeve body (1) via a threaded groove, a cylinder (14) is fixedly mounted on one end of the threaded sleeve (12) away from the limiting ring (16), and a guide slope (15) is provided on the inner side of the outer end of the cylinder (14).

8. The fastening sleeve for processing a fan core shaft according to claim 7, characterized in that: Driving rods (13) are symmetrically fixedly mounted on the outer walls of the left and right ends of the cylinder (14).

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