CN209754605U - Cam type rapid pressing structure - Google Patents
Cam type rapid pressing structure Download PDFInfo
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- CN209754605U CN209754605U CN201920580911.4U CN201920580911U CN209754605U CN 209754605 U CN209754605 U CN 209754605U CN 201920580911 U CN201920580911 U CN 201920580911U CN 209754605 U CN209754605 U CN 209754605U
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Abstract
The utility model relates to a cam-type rapid compression structure belongs to the anchor clamps technical field in the machining. The utility model comprises a nut, a screw rod, an L-shaped fork rod and a cam pressing rod, wherein the nut is connected with the screw rod in a threaded manner, the outer end of one side edge of the L-shaped fork rod is used for connecting the screw rod, and the outer end of the other side edge of the L-shaped fork rod is used for connecting the cam pressing rod; one side edge of the L-shaped fork rod is fixedly connected with the end part of the screw rod at the outer end surface of the L-shaped fork rod in the length direction, and the axis of the screw rod is vertical to the outer end surface of the L-shaped fork rod; the cam pressing rod comprises a cam and a pressing rod for driving the cam to rotate, and the cam is fixedly connected with the pressing rod; the cam is rotatably arranged at the end part of the L-shaped fork rod through a pivot; when the axis of the screw is vertically arranged, the axis of the pivot is horizontally arranged. The utility model discloses a cam compresses tightly the pole and can press from both sides tight work piece fast, simple structure, and the space that accounts for is little, can satisfy the quick clamping requirement of big-and-middle-sized work piece.
Description
Technical Field
The utility model relates to a cam-type rapid compression structure belongs to the anchor clamps technical field in the machining, and applicable quick clamp in big-and-middle-sized component man-hour is tight.
Background
The clamping mechanism which is most widely applied at present is characterized in that the typical structure of the clamping mechanism comprises a pressing plate, a nut, a screw and a supporting table, the pressing plate is in contact with a workpiece, the pressing plate and the supporting table bear pressure, and the nut rotates on the screw to tightly press the pressing plate to tightly press the workpiece. The operation time is long because the nut needs to be rotated by a spanner for compressing and loosening.
Although other quick clamping fixtures exist at present, the structure is limited to be complex, the occupied space is large, and the price is high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the cam type rapid pressing structure is simple in structure, small in occupied space and capable of meeting the rapid clamping requirements of large and medium-sized workpieces.
The utility model provides a technical scheme that its technical problem adopted is: the cam type rapid compression structure comprises a nut, a screw rod, an L-shaped fork rod and a cam compression rod, wherein the nut is in threaded connection with the screw rod, the outer end of one side edge of the L-shaped fork rod is used for being connected with the screw rod, and the outer end of the other side edge of the L-shaped fork rod is used for being connected with the cam compression rod; one side edge of the L-shaped fork rod is fixedly connected with the end part of the screw rod at the outer end surface of the L-shaped fork rod in the length direction, and the axis of the screw rod is vertical to the outer end surface of the L-shaped fork rod; the cam pressing rod comprises a cam and a pressing rod for driving the cam to rotate, and the cam is fixedly connected with the pressing rod; the cam is rotatably arranged at the end part of the L-shaped fork rod through a pivot; when the axis of the screw is vertically arranged, the axis of the pivot is horizontally arranged.
Further, the method comprises the following steps: the compressing rod is fixedly connected to the outer side of the cam and connected to the middle of the cam in the thickness direction.
Further, the method comprises the following steps: the cam pressing rod is arranged in the middle of the L-shaped fork rod in the thickness direction, and a groove is formed in the rotation stroke of the L-shaped fork rod.
Further, the method comprises the following steps: the thickness of the cam is the same as that of the pressing rod, and the cam and the pressing rod are of an integral structure.
Furthermore, the cam is provided with a first arc surface with the radius of R 1 and a second arc surface with the radius of R 2, and the pressing rod is fixedly connected to a connecting part of the first arc surface and the second arc surface.
Further, the method comprises the following steps: the outer end of the pressing rod is provided with an arc-shaped part which is arranged in a bending mode relative to the pressing rod body, and the bending direction of the arc-shaped part corresponds to the cam rotating pressing direction of the cam pressing rod.
Further, the method comprises the following steps: the pivot is a cylindrical pin, one of an eccentric hole of the cam and a fitting hole of the L-shaped fork rod forms interference fit with the cylindrical pin, and the other one forms clearance fit with the cylindrical pin.
Further, the method comprises the following steps: the L-shaped fork rod is in threaded connection with the screw rod through the internal thread hole.
Further, the method comprises the following steps: the clamping mechanism comprises a machine tool workbench and a workpiece arranged on the machine tool workbench, wherein a T-shaped groove is formed in the top surface of the machine tool workbench, a nut is arranged in the T-shaped groove, an L-shaped fork rod is fixedly arranged on the machine tool workbench through the matching of the nut and a screw rod, a cam is arranged above a clamping surface of the workpiece, and the workpiece can be fixed on the machine tool workbench through the rotation of a compression rod driving cam.
Further, the method comprises the following steps: the nut is a T-shaped nut matched with a T-shaped groove on a machine tool workbench; when the outer end of the pressing rod is provided with an arc-shaped part which is arranged in a bending way relative to the pressing rod body, the bending direction of the arc-shaped part corresponds to the cam rotating pressing direction of the cam pressing rod, and the bending direction of the arc-shaped part faces away from the workpiece.
The utility model has the advantages that: during implementation, the workpiece can be quickly clamped through the cam pressing rod, and the workpiece is locked by utilizing the cam self-locking principle. In the use process, the workpiece cannot be loosened. Compare in traditional clamp plate formula locking structure, the utility model discloses cancelled long clamp plate, simple structure, occupation space is little, and convenient operation only needs compress tightly the cam that the pole rotates not to the quarter round and just can realize loosening or press from both sides tightly moreover. And the cam compression rod is provided with a man-machine suitable compression rod as an operating handle, can be quickly operated by hands or tools, is high in clamping efficiency, and can be adjusted by a compression space and force through a screw rod and an L-shaped fork rod. The utility model discloses can satisfy the quick clamping requirement of big-and-middle-sized work piece processing well, can extensively be applicable to the quick clamping of dish class, box class product man-hour.
Drawings
Fig. 1 is a front view of the present invention.
Figure 2 is an isometric view of the present invention in practice.
Fig. 3 is a schematic structural view of the cam pressing rod of the present invention.
The components in the figure are marked as: 1-nut, 2-screw, 3-L-shaped fork lever, 4-pivot, 5-cam pressing lever, 51-cam, 52-pressing lever, 53-arc part, 6-machine tool workbench and 7-workpiece.
Detailed Description
The present invention will be further explained with reference to the drawings and the embodiments.
As shown in fig. 1 to 3, the cam-type rapid compressing structure of the present invention includes a nut 1, a screw rod 2, an L-shaped fork rod 3 and a cam compressing rod 5, wherein the nut 1 is connected with the screw rod 2 by a screw thread, the outer end of one side of the L-shaped fork rod 3 is used for connecting the screw rod 2, and the outer end of the other side is used for connecting the cam compressing rod 5; one side edge of the L-shaped fork rod 3 is fixedly connected with the end part of the screw rod 2 at the outer end surface of the L-shaped fork rod in the length direction, and the axis of the screw rod 2 is vertical to the outer end surface of the L-shaped fork rod 3; the cam pressing rod 5 comprises a cam 51 and a pressing rod 52 for driving the cam 51 to rotate, and the cam 51 is fixedly connected with the pressing rod 52; the cam 51 is rotatably arranged at the end of the L-shaped yoke 3 by means of a pivot 4; when the axis of the screw 2 is vertically disposed, the axis of the pivot 4 is horizontally disposed.
When implementing, the utility model discloses still include lathe workstation 6 and set up work piece 7 on lathe workstation 6, lathe workstation 6 is provided with T type groove at its top surface, and T type inslot is located to nut 1, cooperatees through nut 1 and screw rod 2 and sets up L shape fork arm 3 fixed on lathe workstation 6, and cam 51 sets up in the clamping face top of work piece 7, can make cam 51 fix work piece 7 on lathe workstation 6 through compressing tightly the rotation of pole 52 drive cam 51. In order to make the structure more reliable, the nut 1 is a T-shaped nut matched with a T-shaped groove on a machine tool workbench 6.
For convenience of operation, the pressing lever 52 is fixedly attached to the outer side of the cam 51 and is attached to a middle position in the thickness direction of the cam 51. Further, for the convenience of processing, the thickness of the cam 51 and the thickness of the pressing lever 52 are set to be the same, and both adopt an integral structure.
Cam compression bar 5 can set up in the both sides of L shape fork arm 3, nevertheless in order to make the structure more reliable, the utility model discloses the preferred cam compression bar 5 that sets up in the thickness direction middle part position of L shape fork arm 3, L shape fork arm 3 is provided with the recess on the rotation stroke of cam compression bar 5. After the structure is adopted, the cam pressing rod, the nut and the screw rod can be in the same vertical plane, the generated pressing force is also in the same vertical plane, and the stress can be more reasonable. The groove arrangement on the L-shaped yoke 3 is usually at least such that the pressing lever 52 can be rotated from a vertical position upwards in the direction away from the workpiece 7 into a horizontal position.
For the convenience of operation, the cam 51 has a first arc surface with a radius of R 1 and a second arc surface with a radius of R 2, and the pressing rod 52 is fixedly connected to the connecting portion of the first arc surface and the second arc surface, as shown in the embodiment of fig. 2 and 3, the pressing stroke of the cam pressing rod 5 is determined by the difference between R 2 and R 1, the cam pressing rod 5 is rotated around the pivot 4, and due to the change of the radius R, when the self-locking condition of the cam is met, the workpiece is quickly clamped, and the workpiece 7 is not loosened during the use process, in this embodiment, the pressing rod 52 of the cam pressing rod 5 is lifted upwards to be loosened, as shown at a in fig. 2, and is pressed downwards, as shown at B in fig. 2.
For the convenience of operation, the outer end of the pressing lever 52 has an arc portion 53 bent with respect to the body of the pressing lever 52, and the bending direction of the arc portion 53 corresponds to the rotational pressing direction of the cam 51 of the cam pressing lever 5. The arc-shaped bending portion 53 may be designed to have an equal thickness, or may be designed to be gradually reduced in thickness from the connecting portion toward the end portion. The provision of the arc portion 53 facilitates the operation with an auxiliary tool. Further, when the cam pressing lever 5 is mounted, the curved direction of the curved portion 53 is preferably toward a direction away from the workpiece 7, as in the embodiment shown in fig. 2, so that it is possible to avoid the outer end of the pressing lever 52 from being too close to the workpiece 7 and being not operated well.
For convenient assembly, the pivot 4 may be a cylindrical pin, and one of the eccentric hole of the cam 51 and the assembly hole of the L-shaped yoke 3 forms an interference fit with the cylindrical pin, and the other forms a clearance fit with the cylindrical pin. In the above preferred embodiment, the cam pressing lever 5 is disposed at the middle position in the thickness direction of the L-shaped yoke 3, and when the L-shaped yoke 3 is provided with the groove on the rotation stroke of the cam pressing lever 5, the fitting holes of the cylindrical pin are located on both side walls of the groove and are coaxially disposed.
For convenient assembly, simultaneously for the convenience of being applicable to work piece 7 of different thickness specifications, L shape fork arm 3 passes through internal thread hole and screw rod 2 threaded connection. When the T-shaped nut is implemented, the T-shaped nut can be firstly placed into a T-shaped groove of a machine tool workbench 6, then one end of the screw rod 2 is screwed into the T-shaped nut, and the other end of the screw rod is screwed into the L-shaped fork rod 3. In addition, the installation height of the L-shaped fork rod 3 can be adjusted according to the thickness of the workpiece 7 to be pressed, so that the contact distance between the cam pressing rod 5 and the workpiece 7 is proper, and the workpiece 7 is guaranteed to be pressed.
The utility model discloses can realize that the quick clamp is tight, simple structure, convenient operation, the clamping is efficient, and the space that occupies is few, uses on the not high or lathe that has the rigidity location of location requirement, is applicable to the quick clamping of big well type spare on the lathe.
Claims (10)
1. Cam type rapid compression structure, including nut (1) and screw rod (2), nut (1) and screw rod (2) threaded connection, its characterized in that: the device also comprises an L-shaped fork rod (3) and a cam pressing rod (5), wherein the outer end of one side edge of the L-shaped fork rod (3) is used for being connected with the screw rod (2), and the outer end of the other side edge of the L-shaped fork rod is used for being connected with the cam pressing rod (5); one side edge of the L-shaped fork rod (3) is fixedly connected with the end part of the screw rod (2) at the outer end surface of the L-shaped fork rod in the length direction, and the axis of the screw rod (2) is vertical to the outer end surface of the L-shaped fork rod (3); the cam pressing rod (5) comprises a cam (51) and a pressing rod (52) for driving the cam (51) to rotate, and the cam (51) is fixedly connected with the pressing rod (52); the cam (51) is rotatably arranged at the end part of the L-shaped fork lever (3) through a pivot (4); when the axis of the screw rod (2) is vertically arranged, the axis of the pivot (4) is horizontally arranged.
2. The cam-type rapid-compression structure of claim 1, wherein: the pressing rod (52) is fixedly connected to the outer side of the cam (51) and is connected to the middle position of the cam (51) in the thickness direction.
3. The cam-type rapid-compression structure of claim 2, wherein: the cam pressing rod (5) is arranged in the middle of the L-shaped fork rod (3) in the thickness direction, and the L-shaped fork rod (3) is provided with a groove in the rotating stroke of the cam pressing rod (5).
4. The cam-type rapid-compression structure of claim 2, wherein: the thickness of the cam (51) is the same as that of the pressing rod (52), and the cam and the pressing rod are of an integral structure.
5. The cam type rapid pressing structure according to claim 1, wherein the cam (51) has a first arc surface with a radius of R 1 and a second arc surface with a radius of R 2, and the pressing rod (52) is fixedly connected to a connecting part of the first arc surface and the second arc surface.
6. The cam-type rapid-compression structure of claim 1, wherein: the outer end of the pressing rod (52) is provided with an arc-shaped part (53) which is bent relative to the body of the pressing rod (52), and the bending direction of the arc-shaped part (53) corresponds to the rotating pressing direction of the cam (51) of the cam pressing rod (5).
7. The cam-type rapid-compression structure of claim 1, wherein: the pivot (4) is a cylindrical pin, one of an eccentric hole of the cam (51) and a fitting hole of the L-shaped fork rod (3) forms an interference fit with the cylindrical pin, and the other forms a clearance fit with the cylindrical pin.
8. The cam-type rapid-compression structure of claim 1, wherein: the L-shaped fork rod (3) is in threaded connection with the screw rod (2) through an internal threaded hole.
9. The cam-type quick-clamping structure according to any one of claims 1 to 8, wherein: the clamping mechanism is characterized by further comprising a machine tool workbench (6) and a workpiece (7) arranged on the machine tool workbench (6), wherein a T-shaped groove is formed in the top surface of the machine tool workbench (6), a nut (1) is arranged in the T-shaped groove, an L-shaped fork rod (3) is fixedly arranged on the machine tool workbench (6) through the matching of the nut (1) and a screw (2), a cam (51) is arranged above a clamping surface of the workpiece (7), and the cam (51) can be driven to rotate through a pressing rod (52) so that the cam (51) can fix the workpiece (7) on the machine tool workbench (6).
10. The cam-type rapid-compression structure of claim 9, wherein: the nut (1) is a T-shaped nut matched with a T-shaped groove on a machine tool workbench (6); when the outer end of the pressing lever (52) has an arc-shaped portion (53) which is provided to be curved with respect to the pressing lever (52) body, the curved direction of the arc-shaped portion (53) corresponds to the rotational pressing direction of the cam (51) of the cam pressing lever (5), and the curved direction of the arc-shaped portion (53) is a direction toward a direction away from the workpiece (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920580911.4U CN209754605U (en) | 2019-04-25 | 2019-04-25 | Cam type rapid pressing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920580911.4U CN209754605U (en) | 2019-04-25 | 2019-04-25 | Cam type rapid pressing structure |
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| Publication Number | Publication Date |
|---|---|
| CN209754605U true CN209754605U (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920580911.4U Active CN209754605U (en) | 2019-04-25 | 2019-04-25 | Cam type rapid pressing structure |
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| CN (1) | CN209754605U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111843542A (en) * | 2020-07-03 | 2020-10-30 | 山西航天清华装备有限责任公司 | Quick self-locking type powerful clamp with adjustable clamping height for groove or hole |
-
2019
- 2019-04-25 CN CN201920580911.4U patent/CN209754605U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111843542A (en) * | 2020-07-03 | 2020-10-30 | 山西航天清华装备有限责任公司 | Quick self-locking type powerful clamp with adjustable clamping height for groove or hole |
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