CN220218157U - Rotary self-tightening clamping mechanism - Google Patents
Rotary self-tightening clamping mechanism Download PDFInfo
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- CN220218157U CN220218157U CN202321801963.2U CN202321801963U CN220218157U CN 220218157 U CN220218157 U CN 220218157U CN 202321801963 U CN202321801963 U CN 202321801963U CN 220218157 U CN220218157 U CN 220218157U
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- elastic element
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- 230000007246 mechanism Effects 0.000 title claims abstract description 21
- 230000000712 assembly Effects 0.000 claims abstract description 5
- 238000000429 assembly Methods 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 abstract 1
- 238000003754 machining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a rotary self-tightening clamping mechanism, which belongs to the technical field of clamping equipment and comprises an annular supporting body, a plurality of clamping assemblies, an annular part and an elastic element, wherein the annular supporting body is arranged on the annular supporting body; the clamping assemblies are circumferentially arranged along the supporting body and are rotationally connected with the supporting body, each clamping assembly comprises a rotating shaft, a roller and a cam which are fixedly connected, and the rotating shaft is axially arranged along the supporting body, so that the rotating shaft, the roller and the cams can synchronously rotate, and an annular area surrounded by the cams is used for accommodating a clamped object; the annular piece is used for driving the roller to rotate so as to increase the diameter of the annular area; the elastic element is used for pushing the cam to rotate so as to reduce the diameter reduction of the annular area. The rotary self-tightening clamping mechanism has a self-tightening effect, and after an object slips, the rotary self-tightening clamping mechanism automatically clamps, so that whether the object slips or not does not need to be monitored, and labor resources are saved.
Description
Technical Field
The utility model relates to the technical field of clamping equipment, in particular to a rotary self-tightening clamping mechanism.
Background
The clamping mechanism is a widely used equipment component, and is used in machining and production devices, such as a chuck commonly used in lathe machining, for clamping an object so that the object can rotate relative to a rotating head, a washing knife and the like. At present, the steps of fixing objects by using these clamping mechanisms are generally the same, taking a chuck as an example, the main clamping components are a plurality of circumferentially arranged clamping jaws, the size of a bayonet (an annular area surrounded by a plurality of clamping jaws) is adjusted by radial expansion of the clamping jaws, when the clamping mechanism is used, the size of the bayonet is adjusted to be larger than the size of the objects, then the objects are put into the bayonet, the size of the bayonet is reduced, the phenomenon that the objects slip (the objects rotate relative to the bayonet) often occurs in the using process, and then the size of the bayonet needs to be continuously reduced to clamp the objects again, so that whether the objects slip is always monitored in the using process, and once the slipping phenomenon occurs, the size of the bayonet needs to be further reduced by manual intervention, which results in waste of labor resources.
Disclosure of Invention
In order to solve the above problems, the present utility model provides a rotary self-tightening clamping mechanism, which has a self-tightening function, and automatically clamps an object after slipping, so that it is not necessary to monitor whether the object slips, and labor resources are saved.
The utility model adopts the following technical scheme:
a rotary self-tightening clamping mechanism comprising:
an annular support body;
a plurality of clamping assemblies disposed circumferentially about and rotatably coupled to the support body, each clamping assembly comprising:
a rotating shaft axially arranged along the support body;
the roller is coaxially and fixedly connected with the rotating shaft;
the cam is axially arranged along the supporting body and is fixedly connected with the rotating shaft; an annular area surrounded by a plurality of cams is used for accommodating the clamped object; when the cam abuts against the clamped object, the circumferential side wall of the cam is in friction contact with the surface of the clamped object;
an annular member coaxially arranged with the support body and rotatable relative to the support body for driving the roller to rotate so that the diameter of the annular region increases;
an elastic member for urging the cam to rotate so that the diameter of the annular region is reduced.
As a specific embodiment of the present utility model, the cam is an eccentric wheel, and a rotation center line of the eccentric wheel coincides with a center line of the rotating shaft.
As a specific embodiment of the utility model, one end of the elastic element is fixedly connected with the supporting body, and the other end of the elastic element is fixedly connected with the annular piece and is used for pushing the annular piece to rotate.
Further, the elastic element is a tension spring.
Further, the elastic element is a torsion spring.
As a specific implementation mode of the utility model, each clamping assembly is matched with one elastic element, one end of the elastic element is fixedly connected with the supporting body, and the other end of the elastic element is fixedly connected with the cam and is used for pushing the cam to rotate.
Further, the elastic element is a torsion spring.
As a specific embodiment of the utility model, teeth are arranged on the inner wall of the annular piece and the outer wall of the roller, and the teeth on the inner wall of the annular piece are meshed with the teeth on the outer wall of the roller.
The utility model has the beneficial effects that:
when the utility model is used, the size of the bayonet (the annular area surrounded by the cams) can be enlarged by rotating the annular part, after an object is put into the bayonet, the elastic element pushes the cams to rotate so as to reduce the size of the bayonet and clamp the object, and when the object slips (the object rotates relative to the bayonet), the cams are driven to rotate so as to reduce the size of the bayonet, thereby playing a self-tightening role, therefore, the bayonet can be automatically clamped without manual monitoring and intervention, and labor resources are saved.
Drawings
FIG. 1 is a schematic view of the overall structure of a rotary self-tightening clamping mechanism according to one embodiment of the present utility model;
FIG. 2 is a schematic view of the clamping assembly of FIG. 1;
FIG. 3 is a top view of FIG. 1;
in the figure, a support 100; a clamping assembly 200; a ring 300; an elastic member 400;
a rotation shaft 210; a roller 220; a cam 230; annular region 240.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
Examples
Referring to fig. 1 to 3, there is shown a specific example of a rotary self-tightening clamping mechanism of the present utility model, which includes an annular supporting body 100, a clamping assembly 200, an annular member 300 and an elastic member 400. The plurality of clamping assemblies 200 are arranged along the circumference of the support body 100 and are rotationally connected with the support body 100, each clamping assembly 200 comprises a rotating shaft 210, a roller 220 and a cam 230, wherein the rotating shaft 210 is axially arranged along the support body 100 and is rotationally connected with the support body 100, the roller 220 is coaxially and fixedly connected with the rotating shaft 210, and the cam 230 is axially arranged along the support body 100 and is fixedly connected with the rotating shaft 210, so that the rotating shaft 210, the roller 220 and the cam 230 synchronously rotate. An annular region 240 surrounded by the plurality of cams 230 for receiving the object to be held; when the cam 230 abuts against the clamped object, the circumferential side wall of the cam 230 is in frictional contact with the surface of the clamped object, so that the clamped object can rotate with the cam 230 abutting against the clamped object when rotating relative to the support 100. The ring-shaped member 300 is coaxially arranged with the supporting body 100 and can rotate relative to the supporting body 100, and is used for driving the roller 220 to rotate so as to increase the diameter of the ring-shaped area 240, thereby facilitating the taking and placing of the clamped object; the elastic member 400 serves to push the cam 230 to rotate so that the diameter of the annular region 240 is reduced, i.e., so that the cam tightly grips the gripped object.
When the utility model is used, the size of a bayonet (the annular area 240 surrounded by the cams) can be enlarged by rotating the annular piece 300, after an object is put into the bayonet, the elastic element 400 pushes the cam 230 to rotate so as to reduce the size of the bayonet and clamp the object, and when the object slips (the object rotates relative to the bayonet), the cam 230 is driven to rotate forward so as to reduce the size of the bayonet, thereby playing a self-tightening role, therefore, the utility model can automatically clamp without manual monitoring and intervention, labor resources are saved, and meanwhile, the object can enlarge the size of the bayonet by rotating the annular piece in the opposite direction, so that the object is taken out.
In some embodiments of the utility model, the cam 230 may employ an eccentric, as shown in FIG. 2, the center line of rotation of which coincides with the center line of the shaft 210, and the size of the annular region 240 changes as the eccentric rotates.
In the present utility model, the roller 220 is rotated when the ring 300 rotates, in some embodiments, the inner wall of the ring 300 may be in frictional contact with the peripheral sidewall of the roller 220, in other embodiments, as shown in fig. 1, teeth (not shown) are disposed on both the inner wall of the ring 300 and the outer wall of the roller 220, and the teeth on the inner wall of the ring 300 are engaged with the teeth on the outer wall of the roller 220.
In the present utility model, the elastic element 400 is used to push the cam 230 to rotate, in some embodiments, the cam 230 may be driven to rotate by pushing the ring 300 to rotate, as shown in fig. 1, one end of the elastic element 400 is fixedly connected to the support 100, and the other end is fixedly connected to the ring 300, so as to push the ring to rotate, where the elastic element 400 may use a tension spring as shown in fig. 1, and of course, a torsion spring may be used. In other embodiments, the cam 230 may be directly driven to rotate by the elastic element 400, and at this time, each clamping assembly 200 is matched with one elastic element 400, and the elastic element 400 may be a torsion spring, where one end of the elastic element 400 is fixedly connected to the support 100, and the other end of the elastic element 400 is fixedly connected to the cam 230, so as to push the cam to rotate.
In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.
It will be apparent to those skilled in the art from this disclosure that various other changes and modifications can be made which are within the scope of the utility model as defined in the appended claims.
Claims (8)
1. A rotary self-tightening clamping mechanism, comprising:
an annular support body;
a plurality of clamping assemblies disposed circumferentially about and rotatably coupled to the support body, each clamping assembly comprising:
a rotating shaft axially arranged along the support body;
the roller is coaxially and fixedly connected with the rotating shaft;
the cam is axially arranged along the supporting body and is fixedly connected with the rotating shaft; an annular area surrounded by a plurality of cams is used for accommodating the clamped object; when the cam abuts against the clamped object, the circumferential side wall of the cam is in friction contact with the surface of the clamped object;
an annular member coaxially arranged with the support body and rotatable relative to the support body for driving the roller to rotate so that the diameter of the annular region increases;
an elastic member for urging the cam to rotate so that the diameter of the annular region is reduced.
2. The rotary self-tightening clamp mechanism according to claim 1, wherein the cam is an eccentric, a rotation center line of the eccentric being coincident with a center line of the rotating shaft.
3. The rotary self-tightening clamp mechanism according to claim 1, wherein one end of the elastic element is fixedly connected to the supporting body, and the other end of the elastic element is fixedly connected to the ring-shaped member for pushing the ring-shaped member to rotate.
4. A rotary self-tightening clamp mechanism according to claim 3, wherein the resilient element is a tension spring.
5. A rotary self-tightening clamp mechanism according to claim 3, wherein the resilient element is a tension spring.
6. The rotary self-tightening clamping mechanism according to claim 1, wherein each clamping assembly is matched with one elastic element, one end of the elastic element is fixedly connected with the supporting body, and the other end of the elastic element is fixedly connected with the cam for pushing the cam to rotate.
7. The rotary self-tightening clamp mechanism according to claim 6, wherein the elastic element is a torsion spring.
8. The rotary self-tightening clamp mechanism according to any one of claims 1 to 6, wherein teeth are provided on both the inner wall of the ring and the outer wall of the roller, and the teeth on the inner wall of the ring are engaged with the teeth on the outer wall of the roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321801963.2U CN220218157U (en) | 2023-07-11 | 2023-07-11 | Rotary self-tightening clamping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321801963.2U CN220218157U (en) | 2023-07-11 | 2023-07-11 | Rotary self-tightening clamping mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220218157U true CN220218157U (en) | 2023-12-22 |
Family
ID=89176216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321801963.2U Active CN220218157U (en) | 2023-07-11 | 2023-07-11 | Rotary self-tightening clamping mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220218157U (en) |
-
2023
- 2023-07-11 CN CN202321801963.2U patent/CN220218157U/en active Active
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