CN116967816B - Rotating shaft enclasping device and enclasping method - Google Patents
Rotating shaft enclasping device and enclasping method Download PDFInfo
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- CN116967816B CN116967816B CN202311123569.2A CN202311123569A CN116967816B CN 116967816 B CN116967816 B CN 116967816B CN 202311123569 A CN202311123569 A CN 202311123569A CN 116967816 B CN116967816 B CN 116967816B
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000003921 oil Substances 0.000 claims description 18
- 239000010720 hydraulic oil Substances 0.000 claims description 15
- 239000012528 membrane Substances 0.000 claims description 13
- 230000000694 effects Effects 0.000 abstract description 10
- 238000000354 decomposition reaction Methods 0.000 abstract description 3
- 230000002787 reinforcement Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000011084 recovery Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/20—Adjusting or stopping working-spindles in a predetermined position
Abstract
The invention discloses a rotary shaft enclasping device and an enclasping method, comprising a clamping body and a cylinder body, wherein the clamping body is fixedly connected with a shaft body, one side of the clamping body is provided with the cylinder body, two sides of the clamping body are provided with semicircular ring grooves, the cylinder body comprises a cylinder body fixed end and a cylinder body moving end, and one side of the cylinder body fixed end is fixedly connected with a fixed seat sleeve. According to the invention, the clamping body is pushed by pushing the moving end of the cylinder body, and the semicircular grooves are arranged at the two sides of the clamping body, so that the outer ring surface of the clamping body can be expanded outwards in parallel, and the positive pressure of the clamping body on the inner ring of the fixed seat sleeve can be known according to force decomposition, namely, the force in the vertical direction is far greater than the force in the horizontal direction, so that the clamping body has a great reinforcement effect, and the clamping block and the fixed seat sleeve can be stably held tightly, so that the structure can obtain a larger friction moment than a structure of direct pushing of the oil cylinder, and is convenient for stably holding and fixing the shaft body.
Description
Technical Field
The invention relates to the technical field of clasping of a rotating shaft, in particular to a clasping device and a clasping method of the rotating shaft.
Background
The rotary shaft locking device is a device for fixing and controlling the rotary shaft, and has the main functions of ensuring that the rotary shaft keeps stable and reliable rotation in the working process, preventing axial movement or loosening, and being commonly used for locking and locking the rotary shaft of a numerical control machine tool, the rotary shaft can be fixed and limited to rotate relatively.
In the prior art, the method has the following publication number: the 'braking method of the rotary shaft of the numerical control machine tool' of CN102554677A is characterized in that an electromagnetic brake armature is arranged on the rotary shaft of the numerical control machine tool, an electromagnetic brake exciting coil is arranged on a rotary shaft box body, and the electromagnetic attraction force is generated by the electromagnetic brake exciting coil when the electromagnetic brake exciting coil is electrified, so that the electromagnetic brake coil and the electromagnetic brake armature on the rotary shaft are mutually pressed, static friction force is generated, and the rotary shaft is held tightly, so that the braking of the rotary shaft is realized.
However, in the prior art, when the electromagnetic attraction force is adopted as braking power, as most of machine tool structures are made of magnetic materials, the transmission of the magnetic attraction force between the mechanisms is easy to interfere with each other, so that the braking and holding acting force is weakened, and the braking and holding are unstable.
Meanwhile, the common rotary shaft enclasping also comprises hydraulic direct pushing enclasping, pneumatic expansion enclasping and the like. The hydraulic enclasping has the problem that hydraulic oil weakens enclasping effect because of sealing is not firm, and in order to release enclasping after being capable of releasing pressure, the hydraulic enclasping is generally required to be used together with a disc spring, and the structure is complex. And the air pressure expansion type enclasping force is limited, the manufacturing difficulty is high, and the overall production cost is increased.
Therefore, we propose a device and a method for clasping a rotating shaft, so as to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a rotary shaft enclasping device and an enclasping method, which are used for solving the problems that when electromagnetic suction force is adopted as braking power, braking and enclasping are not firm, hydraulic oil is weak in enclasping effect due to weak sealing when hydraulic oil is adopted for direct pushing enclasping, the structure is complex due to the use of a disc spring, the enclasping force of adopting air pressure expansion enclasping is limited, the manufacturing difficulty is high, and the overall production cost is increased.
In order to achieve the above purpose, the present invention provides the following technical solutions: a rotary shaft clasping device comprises a clamping body and a cylinder body; the middle part of the clamping body is fixedly connected with a shaft body, one side of the clamping body is provided with the cylinder body, and two sides of the clamping body are respectively and correspondingly provided with semicircular grooves; the cylinder body comprises a cylinder fixed end and a cylinder moving end, a fixed seat sleeve is fixedly connected to the outer side of the cylinder fixed end, and the fixed seat sleeve is sleeved on the clamping body and the cylinder moving end; a small gap is reserved between the fixed seat sleeve and the clamping body when the fixed seat sleeve and the clamping body are not tightly held; the cylinder body is characterized in that one side of the fixed end of the cylinder body is fixedly connected with an annular elastic diaphragm, and one side of the annular elastic diaphragm is fixedly connected with the moving end of the cylinder body.
Preferably, a plurality of first screws are arranged on one side of the clamping body, the plurality of first screws are distributed on the side face of the clamping body in a ring shape, and the clamping body and the shaft body are mutually fixed through the first screws.
Preferably, the first screw is in threaded connection with the clamping body, and the first screw penetrates through the clamping body to be in threaded connection with the shaft body.
Preferably, two semicircular grooves are respectively arranged on two sides of the clamping body, the four semicircular grooves are distributed in a parallelogram on the axial section of the clamping body, and a tiny included angle is formed between the long side of the parallelogram formed by the semicircular grooves on the side face of the clamping body and the end face.
Preferably, the clamping body comprises clamping blocks at the outer side, spacing grooves are formed between the clamping blocks, the clamping blocks are uniformly arranged at intervals in the circumferential direction, and a small gap of 0.03-0.05mm is reserved between the outer side wall of the clamping block and the inner side wall of the fixed seat sleeve; the middle part of the clamping body is provided with a ring cavity.
Preferably, a plurality of second screws are arranged on one side of the cylinder body, the second screws are distributed on the side face of the cylinder body in an annular mode, and the cylinder body and the fixing seat sleeve are mutually fixed through the second screws; the second screw is in threaded connection with the cylinder body, and penetrates through the cylinder body to be in threaded connection with the fixed seat sleeve.
Preferably, the shaft body is mounted on a rotary shaft of the machine tool; the fixed seat sleeve is arranged on a fixed carrier of the machine tool.
Preferably, the surface of the cylinder body is provided with a threaded connection hole, the cylinder body is connected with an oil pipe of a hydraulic station through the threaded connection hole, one end of the shaft body is positioned at the central positions of the cylinder fixing end and the cylinder moving end, the shaft body penetrates through the cylinder fixing end and the cylinder moving end respectively, the cylinder moving end is positioned at a position close to one side of the clamping block, and the cylinder fixing end is positioned at a position far away from one side of the clamping block.
Preferably, the annular elastic membrane is provided with two pieces, the two pieces are located between the fixed end of the cylinder body and the moving end of the cylinder body, one piece is close to the outer end of the cylinder body, the other piece is close to the root of the cylinder body, and an oil cavity is formed between the two annular elastic membranes.
The invention also provides a use method of the rotary shaft enclasping device, which uses the rotary shaft enclasping device and comprises the following steps:
s1, mounting a shaft body on a rotating shaft of a machine tool, and simultaneously mounting a fixed seat sleeve on a fixed carrier of the machine tool;
s2, connecting an oil pipe of the hydraulic station with the cylinder body through a threaded connecting hole;
and S3, when the shaft body is required to stop rotating, after hydraulic oil with pressure is introduced into the cylinder body through the hydraulic station, the cylinder moving end at one side of the cylinder body moves towards one side of the clamping block and extrudes the clamping body, so that the clamping body is outwards and parallelly expanded, and the clamping block and the fixed seat sleeve are extruded to realize enclasping.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the clamping body is pushed by pushing the cylinder body moving end to enable the clamping body to expand outwards in parallel, the semicircular grooves are arranged on two sides of the clamping body to ensure that the outer ring surface of the clamping body can expand outwards in parallel, at the moment, the horizontal force of hydraulic thrust can be decomposed, and the included angle alpha is a tiny included angle between the long side of the parallelogram formed by the semicircular grooves on the side surface of the clamping body and the end surface, as the angle alpha is small, the positive pressure of the clamping body on the inner ring of the fixed seat sleeve can be known according to the decomposition of the force, namely the vertical force is far greater than the horizontal force, so that the clamping body has a great reinforcement effect, the clamping block and the fixed seat sleeve can be stably held tightly, and the structure can obtain a larger friction moment than the structure of direct pushing of the oil cylinder, so that the shaft body can be held tightly and fixed stably;
2. according to the invention, the shaft body is arranged on the rotating shaft of the machine tool, the fixed seat sleeve is arranged on the fixed carrier of the machine tool, then the oil pipe of the hydraulic station is connected with the cylinder body through the threaded connecting hole, when the rotation of the shaft body is required to be stopped, the hydraulic oil with pressure is introduced into the cylinder body through the hydraulic station, the cylinder moving end at one side of the cylinder body moves towards one side of the clamping block to extrude the clamping body, the clamping body is expanded outwards in parallel, the clamping block and the fixed seat sleeve are extruded, the purpose of holding tightly is achieved, the device can firmly hold the shaft body by adopting a simple mechanical component, the stable fixation of the shaft body is facilitated, meanwhile, the mechanical component is simple, the manufacturing difficulty can be effectively reduced, and the production cost is reduced;
3. according to the invention, the spacing groove is arranged between the clamping blocks, so that the clamping body can obtain better elasticity at the outer side, the enclasping operation effect is effectively improved, and the trend of outward parallel expansion of the clamping body can be effectively obtained after the annular cavity in the clamping body is arranged; meanwhile, when the clamping block and the fixed seat sleeve are in enclasping operation, the clamping block firstly rubs with the moving end of the cylinder body and then rubs with the inner wall of the fixed seat sleeve, a large amount of heat energy can be generated by friction, and the heat can be rapidly dissipated through the annular cavity arranged in the clamping body and the interval slot arranged between the clamping block, so that the strength between the structures is reduced due to high temperature, and the enclasping effect is prevented from being influenced;
4. the annular elastic membrane adopts a fixed connection mode to be connected with the cylinder body moving end and the cylinder body fixed end, so that the integral connection is firm, and the problem of leakage caused by loose connection is not easy to occur.
Drawings
FIG. 1 is a first perspective view of a swivel axle hugging device according to the present invention;
FIG. 2 is a second perspective view of a swivel hugging device according to the present invention;
FIG. 3 is a perspective view showing a cross-sectional structure of a rotary shaft clasping apparatus according to the present invention;
FIG. 4 is a schematic cross-sectional elevation of a swivel-axle hugging device according to the present invention;
FIG. 5 is a schematic perspective view of a clamping body in a rotary shaft hugging device according to the present invention;
FIG. 6 is a perspective view showing a sectional structure of a clamping body in a rotary shaft clasping apparatus according to the present invention;
FIG. 7 is a schematic cross-sectional elevational view of a clamp body of the rotary shaft hugging device according to the present invention;
fig. 8 is a schematic diagram of a stress analysis structure of a clamping body in a rotary shaft clasping device according to the present invention.
Fig. 9 is a schematic diagram of a parallelogram-like distribution formed by semicircular grooves of a clamping body in an axial section in a rotary shaft clasping device according to the present invention.
In the figure: 1. a clamping body; 11. semicircular ring grooves; 12. a clamping block; 13. a spacing groove; 14. a ring cavity; 2. a cylinder body; 21. a cylinder body fixed end; 22. an annular elastic membrane; 23. a cylinder moving end; 24. a threaded connection hole; 3. a shaft body; 4. a first screw; 5. a second screw; 6. fixing the seat cover; 7. an oil chamber.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
According to the rotary shaft enclasping device and the enclasping method, the hydraulic oil with pressure is introduced into the cylinder body through the hydraulic station, so that the cylinder moving end at one side of the cylinder body moves towards one side of the clamping block, the clamping body is extruded, the clamping body is expanded outwards in parallel, and the clamping block and the fixed seat sleeve are extruded, so that the enclasping purpose is achieved. The device can firmly hold the shaft body by adopting a simple mechanical component, and is convenient for stably fixing the shaft body.
The rotary shaft clasping device and the clasping method according to the present invention will be described in detail with reference to specific examples.
Examples
Referring to fig. 1-8, in the present embodiment, the rotating shaft clasping apparatus includes a clamping body 1, a cylinder body 2 and a fixing seat 6. Wherein the middle parts of the clamping body 1 and the cylinder body 2 are respectively provided with a through hole (not marked) to be sleeved on a shaft body 3, and the clamping body 1 and the cylinder body 2 are arranged side by side, namely are sleeved on the shaft body 3 side by side like a left side and a right side in fig. 4.
As the clamping body 1, in the present embodiment, it is fixedly connected to the shaft body 3. In order to realize fixed connection, one side of the clamping body 1 is provided with a plurality of first screws 4, the plurality of first screws 4 are distributed on the side surface of the clamping body 1 in a ring shape, and the clamping body 1 and the shaft body 3 are mutually fixed through the first screws 4. Specifically, the first screw 4 is screwed with the clamping body 1, and the first screw 4 penetrates the clamping body 1 to be screwed with the shaft body 3. Therefore, the clamping body 1 and the shaft body 3 are fixedly connected, the shaft body 3 is fixedly arranged on the rotary shaft of the machine tool, and the linkage of the clamping body 1, the shaft body 3 and the rotary shaft of the machine tool can be realized, so that the synchronous enclasping of the three is realized in the enclasping state.
In this embodiment, for the specific structural design of the clamping body 1, the clamping body 1 is made of a steel elastomer, corresponding semicircular grooves 11 are respectively provided on the left and right sides of the clamping body 1, and each semicircular groove 11 is disposed around the clamping body 1. Specifically, two semicircular grooves 11 are provided on the left and right side walls of the clamping body 1, and thus four semicircular grooves 11 are formed on one clamping body 1. Each semicircular groove 11 is semicircular in an axial section of the clamping body 1. Two semicircular grooves 1 on the same side wall of the clamping body 1, wherein one semicircular groove is close to the outer side of the clamping body 1, and the other semicircular groove is close to the root of the clamping body 1. The four semicircular grooves 11 are distributed in a parallelogram on the axial section of the clamping body 1 to form a parallelogram P1P2P3P4, as shown in fig. 9. Due to the characteristics of the parallelogram mechanism, the clamping body 1 can realize the parallel outward expansion of the outer ring surface after being stressed on the end surface of the outer ring.
Further, a small included angle is formed between the long side and the end face of the parallelogram formed by the semicircular grooves 11 on the side face of the clamping body 1, and the value of the included angle alpha is small, that is, the included angle between the side face and the end face of the clamping body 1 is small, that is, a small inclined angle is formed, as shown in fig. 8 in detail. The end faces here are understood to be vertical end faces as shown in fig. 8. The small included angle refers to an included angle with a small angle, the size of the included angle can be determined according to the friction angle, and the angle is slightly larger than the friction angle.
For the concrete structure of the cylinder body 2, the cylinder body 2 comprises a cylinder fixed end 21 and a cylinder moving end 23, the outside of the cylinder fixed end 21 is fixedly connected with a fixed seat sleeve 6, one side of the cylinder fixed end 21 is fixedly connected with an annular elastic diaphragm 22, and one side of the annular elastic diaphragm 22 is fixedly connected with the cylinder moving end 23.
In this embodiment, the annular elastic membrane 22 is provided with two pieces, which are located between the cylinder fixing end 21 and the cylinder moving end 23, one piece is close to the outer end of the cylinder body 2, the other piece is close to the root of the cylinder body 2, and the oil cavity 7 is formed between the two annular elastic membranes 22. The annular elastic membrane 22 can be made of an elastic steel sheet in the present embodiment, specifically, after being fixedly connected, a structure in which the convex top faces the center of the oil chamber 7 is formed. Thus, not only can reliable sealing be realized, but also a very good elastic retraction function can be realized.
In the present embodiment, the cylinder body 2 is provided with a screw connection hole 24 on the side surface thereof, and the cylinder body 2 is connected with an oil pipe of the hydraulic station through the screw connection hole 24. Thereby, the hydraulic oil can enter the oil chamber 7 through the oil pipe.
One end of the shaft body 3 is positioned at the center of the cylinder fixing end 21 and the cylinder moving end 23, and the shaft body 3 penetrates through the cylinder fixing end 21 and the cylinder moving end 23 respectively. In the present embodiment, the cylinder moving end 23 is located at a position close to the clamp body 1 side, and the cylinder fixing end 21 is located at a position remote from the clamp body 1 side of the cylinder moving end 23.
One side of the cylinder body fixed end 21 of the cylinder body 2 is provided with a plurality of second screws 5, the plurality of second screws 5 are distributed on the side surface of the cylinder body fixed end 21 in a ring shape, and the cylinder body fixed end 21 and the fixed seat sleeve 6 are mutually fixed through the second screws 5. Specifically, the second screw 5 is screwed with the cylinder fixing end 21, and the second screw 5 penetrates the cylinder fixing end 21 to be screwed with the fixing sleeve 6. The cylinder fixing end 21 is thereby fixed to the fixing sleeve 6, while the fixing sleeve 6 is mounted on the machine tool fixed to the carrier, and the shaft body 3 is mounted on the rotary shaft of the machine tool. Thus, when the rotary shaft drives the shaft body 3 to rotate, the fixed seat cover 6 and the cylinder fixed end 21 are in a fixed state.
In this embodiment, the fixed sleeve 6 is also sleeved on the clamping body 1 and the cylinder moving end 23. In the state of not holding tightly the fixed seat cover 6 and the clamping body 1, a tiny gap is reserved between the fixed seat cover 6 and the clamping body 1. The small gap is a small gap, which satisfies that the clamping body 1 can smoothly rotate under the drive of the shaft body 3 in the unclamped state, and the clamped state between the clamping body 1 and the fixed seat cover 6 can be realized in the clamped state.
In this embodiment, the clamping body 1 includes an outer clamping block 12, and a spacing groove 13 is disposed between the clamping blocks 12. The clamping blocks 12 are uniformly arranged at intervals in the circumferential direction, the small gap of 0.03-0.05mm is reserved between the outer side wall of the clamping block 12 and the inner side wall of the fixed seat cover 6, namely, the small gap is reserved between the fixed seat cover 6 and the clamping body 1 when the fixed seat cover 6 and the clamping body 1 are not tightly held. Meanwhile, in this embodiment, the middle part of the clamping body 1 is further provided with a ring cavity 14, and it should be noted that the ring cavity 14 is similar to a parallelogram in the axial section of the clamping body 1.
The clamping blocks 12 are used as a part of the clamping body 1 and are of an integral structure with the clamping body 1, the arrangement of the spacing grooves 13 between the clamping blocks 12 not only can play a role in effective heat dissipation, but also can ensure that the clamping blocks 12 arranged in whole circle are not connected into a whole, and after the spacing arrangement, the elastic effect of the clamping body 1 is better, and particularly, the outer side, namely, the outer ring surface can obtain a good elastic effect. The annular cavity 14 is formed in the middle of the clamping body 1, so that on one hand, the overall weight of the clamping body 1 is effectively reduced, the cost is effectively saved, the heat dissipation effect can be improved, more importantly, the structure similar to a parallelogram can be improved, and the parallel outward expansion trend of the clamping body 1 can be promoted when the clamping body is pressed.
When the hydraulic pressure station is used, the shaft body 3 is arranged on the rotary shaft of the machine tool, the fixed seat sleeve 6 is arranged and fixed on the fixed carrier of the machine tool, and then the oil pipe of the hydraulic pressure station is connected with the cylinder body fixed end 21 of the cylinder body 2 through the threaded connecting hole 24. When the rotation of the shaft body 3 is required to be stopped, after hydraulic oil with pressure is introduced into the cylinder body 2 through the hydraulic station, the cylinder moving end 23 on one side of the cylinder body 2 moves towards the clamping block 12 and extrudes the end face of the clamping body 1, so that the clamping body 1 expands outwards in parallel, and the clamping block 12 and the fixed seat cover 6 are extruded.
After hydraulic oil with pressure is introduced into the cylinder body 2, the annular elastic membrane 22 generates elastic deformation, and meanwhile, the cylinder body moving end 23 is pushed to push the clamping body 1, so that the clamping body 1 is expanded outwards in parallel, and the semicircular grooves 11 are formed in the two sides of the clamping body 1, so that the annular surface of the clamping body 1 can be expanded outwards in parallel. At this time, the horizontal force of the hydraulic thrust force can be decomposed. As shown in fig. 8, the included angle α is a slight included angle between the long side of the parallelogram formed by the semicircular groove 11 at one side of the clamping body 1 and the end surface, because the angle α is small, n=f/tan α can be known according to force decomposition, wherein N is positive pressure of the clamping body 1 acting on the inner ring of the fixed seat cover 6, and F is force in the horizontal direction, because the angle α is small, N is far greater than F, so that the clamping body 1 has a great reinforcing effect, and the clamping block 12 and the fixed seat cover 6 can be stably held tightly, so that the structure can obtain a larger friction moment than a structure of direct pushing of an oil cylinder, and is convenient for holding tightly and fixing the shaft body 3 stably.
When the shaft body 3 is required to rotate, hydraulic oil in the cylinder body 2 is discharged through the hydraulic station, the annular elastic membrane 22 is deformed in a recovery mode, the clamping body 1 is deformed in a recovery mode, the clamping block 12 is reset, and the clamping block 12 is separated from the fixed seat cover 6.
When clamping block 12 and fixed seat cover 6 carry out the operation of holding tightly, clamping block 12 at first can rub with cylinder body motion end 23, later with fixed seat cover 6 inner wall production friction, friction can produce a large amount of heat energy, can carry out quick dissipation with the heat through the spacing groove 13 that sets up between the ring chamber 14 that the inside of clamping body 1 set up and clamping block 12, avoids the high temperature to make intensity between each structure weaken, influences the effect of holding tightly.
The working principle of the embodiment is as follows: the method comprises the steps of installing a shaft body 3 on a rotating shaft of a machine tool, installing a fixed seat sleeve 6 on a fixed carrier of the machine tool, connecting a hydraulic station oil pipe with a cylinder body 2 through a threaded connecting hole 24, when the rotation of the shaft body 3 is required to be stopped, introducing pressurized hydraulic oil into the cylinder body 2 through a hydraulic station, and then enabling a cylinder moving end 23 on one side of the cylinder body 2 to move towards a clamping block 12, and enabling the clamping body 1 to expand outwards in parallel to enable the clamping block 12 to be extruded with the fixed seat sleeve 6;
after hydraulic oil with pressure is introduced into the cylinder body 2, the annular elastic membrane 22 elastically deforms, and simultaneously pushes the cylinder moving end 23 to push the clamping body 1, so that the clamping body 1 is outwards and parallelly expanded;
when the shaft body 3 is required to rotate, hydraulic oil in the cylinder body 2 is discharged through the hydraulic station, the annular elastic membrane 22 is deformed in a recovery mode, the clamping body 1 is deformed in a recovery mode, the clamping block 12 is reset, and the clamping block 12 is separated from the fixed seat cover 6. When the clamping block 12 and the fixed seat sleeve 6 are tightly held, the clamping block 12 firstly rubs with the cylinder body moving end 23, then rubs with the inner wall of the fixed seat sleeve 6, a large amount of heat energy can be generated by friction, and the heat can be rapidly dissipated through the annular cavity 14 arranged in the clamping body 1 and the interval groove 13 arranged between the clamping block 12.
The invention also provides a using method of the rotary shaft enclasping device, which mainly comprises the following steps:
s1, mounting a shaft body 3 on a rotating shaft of a machine tool, and simultaneously mounting and fixing a fixed seat sleeve 6 on a fixed carrier of the machine tool;
s2, connecting the hydraulic station oil pipe with the cylinder body 2 through a threaded connecting hole 24;
s3, when the shaft body 3 is required to stop rotating, after hydraulic oil with pressure is introduced into the cylinder body 2 through the hydraulic station, the cylinder moving end 23 on one side of the cylinder body 2 moves towards the clamping block 12, so that the clamping body 1 is outwards and parallelly expanded, the clamping block 12 and the fixed seat sleeve 6 are extruded, and the purpose of enclasping is achieved.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (9)
1. The utility model provides a device is embraced to revolving axle which characterized in that: comprises a clamping body (1) and a cylinder body (2);
the middle part of the clamping body (1) is fixedly connected with a shaft body (3), one side of the clamping body (1) is provided with the cylinder body (2), and two sides of the clamping body (1) are respectively and correspondingly provided with a semicircular groove (11);
the cylinder body (2) comprises a cylinder fixed end (21) and a cylinder moving end (23), a fixed seat sleeve (6) is fixedly connected to the outer side of the cylinder fixed end (21), and the fixed seat sleeve (6) is sleeved on the clamping body (1) and the cylinder moving end (23); a small gap is reserved between the fixed seat cover (6) and the clamping body (1) when the fixed seat cover (6) and the clamping body (1) are not tightly held;
an annular elastic membrane (22) is fixedly connected to one side of the cylinder body fixed end (21), and one side of the annular elastic membrane (22) is fixedly connected with the cylinder body moving end (23);
two sides of the clamping body (1) are respectively provided with two semicircular grooves (11), the four semicircular grooves (11) are distributed in a parallelogram on the axial section of the clamping body (1), and a tiny included angle is formed between the long side of the parallelogram formed by the semicircular grooves (11) on the side surface of the clamping body (1) and the end surface;
the clamping body (1) comprises clamping blocks (12) at the outer side, spacing grooves (13) are formed between the clamping blocks (12), the clamping blocks (12) are uniformly arranged at intervals in the circumferential direction, and an annular cavity (14) is formed in the middle of the clamping body (1);
the surface of the cylinder body (2) is provided with a threaded connection hole (24), the cylinder body (2) is connected with a hydraulic station oil pipe through the threaded connection hole (24), and one end of the shaft body (3) is positioned at the center of the cylinder body fixed end (21) and the cylinder body moving end (23).
2. A swivel hugging device according to claim 1, wherein: a plurality of first screws (4) are arranged on one side of the clamping body (1), the first screws (4) are distributed on the side face of the clamping body (1) in a ring shape, and the clamping body (1) and the shaft body (3) are mutually fixed through the first screws (4).
3. A swivel hugging device according to claim 2, wherein: the first screw (4) is in threaded connection with the clamping body (1), and the first screw (4) penetrates through the clamping body (1) to be in threaded connection with the shaft body (3).
4. A swivel hugging device according to claim 1, wherein: the small gap of 0.03-0.05mm is reserved between the outer side wall of the clamping block (12) and the inner side wall of the fixed seat sleeve (6).
5. A swivel-axle tightening device according to claim 1 or 4, characterized in that: a plurality of second screws (5) are arranged on one side of the cylinder body (2), the second screws (5) are distributed on the side face of the cylinder body (2) in an annular mode, and the cylinder body (2) and the fixed seat sleeve (6) are mutually fixed through the second screws (5); the second screw (5) is in threaded connection with the cylinder body (2), and the second screw (5) penetrates through the cylinder body (2) and is in threaded connection with the fixed seat sleeve (6).
6. The swivel hugging device of claim 5, wherein: the shaft body (3) is arranged on a rotating shaft of the machine tool; the fixed seat cover (6) is arranged on a fixed carrier of the machine tool.
7. The swivel hugging device of claim 4 wherein: the shaft body (3) penetrates through the cylinder body fixed end (21) and the cylinder body moving end (23) respectively, the cylinder body moving end (23) is located at a position close to one side of the clamping block (12), and the cylinder body fixed end (21) is located at a position, far away from the clamping block (12), of the cylinder body moving end (23).
8. A swivel-axle tightening device according to claim 1 or 7, characterized in that: the annular elastic diaphragms (22) are arranged in two, the two annular elastic diaphragms (22) are located between the fixed end (21) of the cylinder body and the moving end (23) of the cylinder body, one annular elastic diaphragm (22) is close to the outer end of the cylinder body (2), the other annular elastic diaphragm (22) is close to the root of the cylinder body (2), and an oil cavity (7) is formed between the two annular elastic diaphragms (22).
9. A method of using the swivel-shaft hugging device of any of claims 1-8, comprising the steps of:
s1, mounting a shaft body (3) on a rotating shaft of a machine tool, and simultaneously mounting a fixed seat sleeve (6) on a fixed carrier of the machine tool;
s2, connecting an oil pipe of the hydraulic station with the cylinder body (2) through a threaded connecting hole (24);
s3, when the shaft body (3) is required to stop rotating, after hydraulic oil with pressure is introduced into the cylinder body (2) through the hydraulic station, the cylinder moving end (23) on one side of the cylinder body (2) moves towards the clamping block (12) and extrudes the clamping body (1), so that the clamping body (1) is outwards and parallelly expanded, and the clamping block (12) and the fixed seat sleeve (6) are extruded to realize enclasping.
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| CN115978113A (en) * | 2022-12-13 | 2023-04-18 | 嘉兴市钧萍轨道交通科技有限公司 | Active hydraulic braking clamp with brake pad gap automatic adjusting function |
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|---|---|
| CN116967816A (en) | 2023-10-31 |
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