CN217475457U - Shaft sleeve expansion fixing device - Google Patents
Shaft sleeve expansion fixing device Download PDFInfo
- Publication number
- CN217475457U CN217475457U CN202221532180.4U CN202221532180U CN217475457U CN 217475457 U CN217475457 U CN 217475457U CN 202221532180 U CN202221532180 U CN 202221532180U CN 217475457 U CN217475457 U CN 217475457U
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- China
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- shaft
- expansion
- sleeve
- fixedly connected
- fixing device
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Abstract
The utility model relates to a shaft sleeve expansion fixing device, which comprises a positioning disc, an expansion shaft, a connecting shaft and an expansion sleeve; the center of the positioning plate is provided with a shaft hole; the expansion shaft penetrates through the shaft hole, the expansion shaft is in sliding connection with the shaft hole, one end of the expansion shaft is fixedly connected with a first blocking piece, a second blocking piece is in sliding connection with the expansion shaft, the other end of the expansion shaft is provided with the shaft hole, and a bearing is connected in the shaft hole; the connecting shaft is fixedly connected with the bearing and used for driving the expansion shaft to slide along the shaft hole; the expansion sleeve is sleeved on the expansion shaft, one end of the expansion sleeve is fixedly connected with the first retaining piece, and the other end of the expansion sleeve is fixedly connected with the second retaining piece. The workpiece is integrally fixed more conveniently, the force applied to the periphery of the workpiece is the same through the expansion sleeve, so that the workpiece is fixed more stably, and the problem that the workpiece is easily deformed due to stress when the workpiece is clamped by the three claws is solved.
Description
Technical Field
The utility model relates to a fixed field of axle sleeve, concretely relates to axle sleeve fastening device that expands.
Background
The existing shaft sleeve is in external support contact with a workpiece through three claws of a three-claw type limiting clamp during machining, so that the clamping stability is poor, the possibility of falling off is very easily caused after long-time use, and the shaft sleeve is very easily stressed to deform during machining of the shaft sleeve workpiece clamped by the three claws.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an axle sleeve fastening fixing device that expands to when solving three-jaw centre gripping axle sleeve work piece, the axle sleeve very easily receives the problem that the stress produced the deformation.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a shaft sleeve expansion fixing device comprises a positioning disc, an expansion shaft, a connecting shaft and an expansion sleeve;
a shaft hole is formed in the center of the positioning plate;
the expansion shaft penetrates through the shaft hole, the expansion shaft is connected with the shaft hole in a sliding mode, one end of the expansion shaft is fixedly connected with a first blocking piece, a second blocking piece is connected to the expansion shaft in a sliding mode, the other end of the expansion shaft is provided with a shaft hole, and a bearing is connected into the shaft hole;
the connecting shaft is fixedly connected with the bearing and used for driving the expansion shaft to slide along the shaft hole;
the expansion sleeve is arranged on the expansion shaft, one end of the expansion sleeve is fixedly connected with the first retaining sheet, and the other end of the expansion sleeve is fixedly connected with the second retaining sheet.
Furthermore, a support ring is fixedly connected to the expansion shaft, the support ring is sleeved on the expansion shaft, and the support ring is located between the first blocking piece and the second blocking piece.
Further, still include the blend stop, the quantity of blend stop is a plurality of, the one end of blend stop with first separation blade fixed connection, the other end of blend stop with second separation blade fixed connection, the intermediate position of blend stop for keep away from the mandril that expands in the both ends position of blend stop, it is a plurality of the blend stop winds the even interval setting of circumference direction of the mandril that expands.
Further, the barrier strip is made of elastic materials.
Furthermore, friction lines are formed on the outer side of the expansion sleeve.
Furthermore, one end of the expansion shaft close to the connecting shaft is in threaded connection with a limiting ring.
Furthermore, a retainer ring groove is formed in the shaft hole, a retainer ring is connected in the retainer ring groove in a clamping mode, and the bearing is located between the retainer ring and the bottom surface of the shaft hole.
Furthermore, a pneumatic cylinder is fixedly connected to the rear end of the machine tool spindle, and the telescopic end of the pneumatic cylinder is fixedly connected with the connecting shaft.
The utility model has the advantages that:
the main shaft fixed connection of positioning disk and lathe, the mandril that expands can pass the shaft hole to can remove in the shaft hole under the effect of connecting axle, when the connecting axle drives the mandril that expands and removes and make first separation blade and second separation blade be close to each other, the tight cover intermediate position of expanding is outwards protruding, thereby can accomplish the fixed to the work piece. The workpiece can be integrally fixed more conveniently, the force applied to the periphery of the workpiece is the same through the expansion sleeve, so that the workpiece is fixed more stably, and the problem that the workpiece is easy to deform due to stress when the workpiece is clamped by the three claws is solved.
Drawings
FIG. 1 is a schematic view of the overall structure of a shaft sleeve expansion fastening device in an explosion state;
FIG. 2 is a schematic view of the overall structure of a shaft sleeve expansion fastening device in combination;
fig. 3 is a schematic view of the internal structure of the shaft sleeve expansion fastening device.
Names corresponding to the marks in the figure:
1-positioning a disc; 2-expanding the tension shaft; 21-a first baffle plate; 22-a second baffle plate; 23-barrier strip; 24-a support ring; 3-connecting the shaft; 31-a bearing; 4-expanding and tightening the sleeve; 5-a workpiece; 6-a limit ring.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The embodiment of the utility model provides a:
referring to the attached drawings 1-3, a shaft sleeve expansion fixing device comprises a positioning disc 1, an expansion shaft 2, a connecting shaft 3 and an expansion sleeve 4; a shaft hole is formed in the center of the positioning plate 1; the expansion shaft 2 penetrates through the shaft hole, the expansion shaft 2 is connected with the shaft hole in a sliding mode, one end of the expansion shaft 2 is fixedly connected with a first blocking piece 21, a second blocking piece 22 is connected onto the expansion shaft 2 in a sliding mode, the other end of the expansion shaft 2 is provided with the shaft hole, and a bearing 31 is connected into the shaft hole; the connecting shaft 3 is fixedly connected with the bearing 31, and the connecting shaft 3 is used for driving the expansion shaft 2 to slide along the shaft hole; the expansion sleeve 4 is sleeved on the expansion shaft 2, one end of the expansion sleeve 4 is fixedly connected with the first retaining sheet 21, and the other end of the expansion sleeve 4 is fixedly connected with the second retaining sheet 22.
The main shaft fixed connection of positioning disk 1 and lathe, the mandril 2 that expands can pass the shaft hole to can remove in the shaft hole under the effect of connecting axle 3, when connecting axle 3 drives the mandril 2 that expands and removes and make first separation blade 21 and second separation blade 22 be close to each other, the outside arch of the 4 intermediate positions of the tight cover that expands, thereby can accomplish the fixed to work piece 5. The workpiece 5 is integrally fixed more conveniently, the force applied to the periphery of the workpiece 5 by the expansion sleeve 4 is the same, so that the workpiece 5 is fixed more stably, and the problem that the workpiece 5 is easily deformed due to stress when the workpiece 5 is clamped by three claws is solved.
The expansion shaft 2 is fixedly connected with a support ring 24, the support ring 24 is sleeved on the expansion shaft 2, and the support ring 24 is positioned between the first retaining plate 21 and the second retaining plate 22. In order to prevent the intermediate position of the expansion sleeve 4 from moving towards the expansion shaft 2 during the mutual approach of the first stop 21 and the second stop 22.
Still include blend stop 23, blend stop 23 is elastic material, and the quantity of blend stop 23 is a plurality of, and the one end and the first separation blade 21 fixed connection of blend stop 23, the other end and the second separation blade 22 fixed connection of blend stop 23, the intermediate position of blend stop 23 are kept away from the mandril 2 that expands for the both ends position of blend stop 23, and a plurality of blend stops 23 set up around the even interval of the circumference direction of the mandril 2 that expands. In order to prevent the middle position of the expansion sleeve 4 from moving towards the expansion shaft 2 in the process that the first baffle 21 and the second baffle 22 are close to each other, and the barrier strip 23 is positioned on the inner side of the expansion sleeve 4, in the process that the first baffle 21 and the second baffle 22 are close to each other, the expansion sleeve 4 is driven by the barrier strip 23, so that the middle position of the expansion sleeve 4 moves towards the inner wall of the workpiece 5, and the workpiece 5 is clamped.
The friction lines are arranged on the outer side of the expansion sleeve 4, and can be used for placing the expansion sleeve 4 to slide with the workpiece 5 after the expansion sleeve 4 is contacted with the workpiece 5.
One end of the expansion shaft 2 close to the connecting shaft 3 is in threaded connection with a limit ring 6. Through being used for restricting the position of the tight axle 2 that expands on the spacing ring 6, avoid the tight axle 2 that expands to break away from with positioning disk 1.
A retainer ring groove is formed in the shaft hole, a retainer ring is clamped in the retainer ring groove, and the bearing 31 is located between the retainer ring and the bottom surface of the shaft hole. Can inject bearing 31 to the shaft hole in through the retaining ring of retaining ring inslot, make things convenient for the relative rotation between connecting rod and the bloated mandril 2.
The rear end of the machine tool spindle is fixedly connected with a pneumatic cylinder, and the telescopic end of the pneumatic cylinder is fixedly connected with the connecting shaft 3. The main shaft is hollow structure, and pneumatic cylinder passes the main shaft, can pull connecting axle 3 through the pneumatic cylinder and remove.
The utility model discloses a use method:
fix positioning disk 1 on the main shaft of lathe at first, work piece 5 cover is in the outside of tight cover 4 that expands, with the flexible end fixed connection of connecting axle 3 and pneumatic cylinder, makes the mandril 2 that expands remove through connecting axle 3 for first separation blade 21 and second separation blade 22 are close to each other, and blend stop 23 drives the tight cover 4 that expands and removes to the direction of keeping away from the mandril 2 that expands, makes the tight cover 4 that expands and the contact of work piece 5, thereby can press from both sides work piece 5 tightly. When the workpiece 5 needs to be loosened, the expansion shaft 2 moves in the opposite direction by moving the connecting shaft 3, the first blocking piece 21 and the second blocking piece 22 are far away from each other, the expansion sleeve 4 is far away from the workpiece 5, and the workpiece 5 can be taken down from the expansion sleeve 4.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.
Claims (8)
1. A shaft sleeve expansion fixing device is characterized by comprising a positioning disc, an expansion shaft, a connecting shaft and an expansion sleeve;
a shaft hole is formed in the center of the positioning plate;
the expansion shaft penetrates through the shaft hole, the expansion shaft is connected with the shaft hole in a sliding mode, one end of the expansion shaft is fixedly connected with a first blocking piece, a second blocking piece is connected to the expansion shaft in a sliding mode, the other end of the expansion shaft is provided with the shaft hole, and a bearing is connected in the shaft hole;
the connecting shaft is fixedly connected with the bearing and used for driving the expansion shaft to slide along the shaft hole;
the expansion sleeve is arranged on the expansion shaft, one end of the expansion sleeve is fixedly connected with the first retaining sheet, and the other end of the expansion sleeve is fixedly connected with the second retaining sheet.
2. The shaft sleeve expansion fixing device as claimed in claim 1, wherein a support ring is fixedly connected to the expansion shaft, the support ring is sleeved on the expansion shaft, and the support ring is located between the first blocking piece and the second blocking piece.
3. The shaft sleeve expansion fixing device as claimed in claim 2, further comprising a plurality of barrier strips, wherein one end of each barrier strip is fixedly connected with the first retaining piece, the other end of each barrier strip is fixedly connected with the second retaining piece, the middle position of each barrier strip is far away from the expansion shaft relative to the two end positions of each barrier strip, and the barrier strips are uniformly arranged around the expansion shaft at intervals in the circumferential direction.
4. The shaft sleeve expansion fixing device as claimed in claim 3, wherein the barrier strip is made of elastic material.
5. The shaft sleeve expansion fixing device as claimed in claim 1, wherein friction lines are formed on the outer side of the expansion sleeve.
6. The shaft sleeve expansion fixing device as claimed in claim 1, wherein a limit ring is connected to one end of the expansion shaft close to the connecting shaft in a threaded manner.
7. The shaft sleeve expansion fixing device as claimed in claim 1, wherein a retainer groove is formed in the shaft hole, a retainer ring is clamped in the retainer groove, and the bearing is located between the retainer ring and the bottom surface of the shaft hole.
8. The shaft sleeve expansion fixing device as claimed in claim 1, wherein a pneumatic cylinder is fixedly connected to the rear end of the machine tool spindle, and the telescopic end of the pneumatic cylinder is fixedly connected with the connecting shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221532180.4U CN217475457U (en) | 2022-06-17 | 2022-06-17 | Shaft sleeve expansion fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221532180.4U CN217475457U (en) | 2022-06-17 | 2022-06-17 | Shaft sleeve expansion fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217475457U true CN217475457U (en) | 2022-09-23 |
Family
ID=83314196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221532180.4U Active CN217475457U (en) | 2022-06-17 | 2022-06-17 | Shaft sleeve expansion fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217475457U (en) |
-
2022
- 2022-06-17 CN CN202221532180.4U patent/CN217475457U/en active Active
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