CN215315789U - Limit interval wrench movement soft clamping jaw clamp - Google Patents
Limit interval wrench movement soft clamping jaw clamp Download PDFInfo
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- CN215315789U CN215315789U CN202120322617.0U CN202120322617U CN215315789U CN 215315789 U CN215315789 U CN 215315789U CN 202120322617 U CN202120322617 U CN 202120322617U CN 215315789 U CN215315789 U CN 215315789U
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- soft
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- jaw
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Abstract
The utility model belongs to a workpiece clamping device and discloses an interval twisting soft clamping jaw clamp which comprises a chuck, wherein three connecting blocks are uniformly distributed on the surface of the chuck along the radial direction, each connecting block is connected with a soft clamping jaw through a pin shaft, the clamping end of each soft clamping jaw is provided with two clamping points which are contacted with a clamped pipe fitting, and six clamping points of the three soft clamping jaws are equally divided at 360 degrees on the outer wall of the clamped pipe fitting; the opposite face setting of connecting block and soft jack catch is semi-circular stress surface, and the semi-circular stress surface both ends of soft jack catch have the extension face, and this extension face forms spacing contained angle respectively with the side of connecting block. The pipe fitting outer wall shape twisting clamp can be attached to the shape of the pipe fitting outer wall within a certain range according to the ovality of the pipe fitting outer wall and twist, so that the outer diameter of a pipe body is prevented from being forcibly clamped into a circular shape in the clamping process, and turning errors and elastic deformation are avoided; the rejection rate after processing is reduced, and the production efficiency is improved.
Description
Technical Field
The utility model belongs to a workpiece clamping device, and particularly relates to a soft clamping claw clamp.
Background
In the current oil casing processing process, because a certain ovality exists before individual oil casing processing, if a common three-jaw chuck is adopted for clamping during processing, blank pipes can be clamped and deformed, and the ovality is reduced. Loosening the chuck after turning is finished, and causing the ovality of the processed sleeve thread and the pipe diameter to be out of tolerance due to elastic deformation; if a four-jaw chuck is used for clamping during machining, although the problem of out-of-tolerance of ovality can be reduced, the production efficiency is greatly reduced.
The mode effects of increasing the contact area of the clamping jaw, using a soft jaw and reducing the clamping pressure are not obvious, and the product yield and the production efficiency are still seriously influenced by the problem of out-of-tolerance ovality.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the related technical problem of over-tolerance of ovality in the pipe fitting processing process, and provides an interval twisting soft clamping claw clamp which is simple to clamp, small in deformation, capable of centering automatically when clamping a pipe fitting, and capable of enabling the soft clamping claw to be attached to the appearance of the pipe fitting and avoiding over-tolerance of ovality.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
the interval twisting soft jaw clamp comprises a chuck, wherein three connecting blocks are uniformly arranged on the surface of the chuck along the radial direction, and each connecting block is fixedly connected with the chuck;
the end part, close to the center of the chuck, of each connecting block is connected with a soft clamping jaw through a pin shaft, the clamping end of each soft clamping jaw is provided with two clamping points which are in contact with a clamped pipe fitting, and six clamping points of the three soft clamping jaws are equally divided on the outer wall of the clamped pipe fitting by 360 degrees;
the connecting block with the opposite face of soft jack catch all sets up to semi-circular stress surface, so that soft jack catch can laminate the tip of connecting block rotates, the semi-circular stress surface both ends of soft jack catch have the extension face, this extension face with the side of connecting block forms the contained angle respectively, in order to form control the spacing portion of soft jack catch wrench movement scope.
Further, the connecting block with the opposite face of soft jack catch sets up to the semi-circular arc convex surface, soft jack catch with the opposite face of connecting block sets up to the semi-circular arc concave surface, the semi-circular arc convex surface of connecting block with the semi-circular arc concave surface looks adaptation of soft jack catch constitutes the connecting block with the semi-circular stress surface of soft jack catch.
Furthermore, the included angle formed by the extension surfaces at the two ends of the semicircular stress surface of the soft claw and the side surface of the connecting block is 1-20 degrees.
The utility model has the beneficial effects that:
according to the interval twisting soft clamping jaw clamp, the shape of the outer wall of the pipe fitting can be attached to the shape of the outer wall of the pipe fitting within a certain range to be twisted according to the ovality of the outer wall of the pipe fitting, so that the outer diameter of the pipe body is prevented from being forcibly clamped into a circular shape in the clamping process, and turning errors and elastic deformation are avoided; the rejection rate after processing is reduced, and the production efficiency is improved.
Drawings
FIG. 1 is a front view of an interval twist soft jaw clamp of an embodiment of the present invention;
FIG. 2 is a cross-sectional view B-B of FIG. 1;
fig. 3 is a schematic perspective view of an interval twisting soft jaw clamp according to an embodiment of the present invention;
fig. 4 is a partially enlarged view of a portion a in fig. 3.
In the figure: 1. the device comprises a limiting part, 2 soft clamping jaws, 3 pin shafts, 4 chucks, 5 connecting blocks, 6 semicircular stress surfaces, 7 pipe fittings and 8 clamping points.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
as shown in fig. 1 and fig. 2, the present embodiment discloses a range twisting soft jaw clamp, which mainly includes a chuck 4, a connecting block 5, and a soft jaw 2.
The surface of the chuck 4 is provided with three connecting blocks 5, the three connecting blocks 5 are uniformly arranged on the chuck 4 along the radial direction, and each connecting block 5 is fixedly connected with the chuck 4.
The end part of each connecting block 5 close to the center of the chuck 4 is connected with a soft clamping jaw 2 through a shaft pin 3, each soft clamping jaw 2 is symmetrical relative to the two sides of the center line of the connecting block 5, and the soft clamping jaws 2 are used for directly clamping a pipe fitting 7. The axle pin 3 is used to provide connection and rotation to make the soft jaw 2 fit the oval pipe wall during clamping.
The clamping end of each soft jaw 2 is provided with two clamping points 8 which are in contact with the pipe 7, and the size of each soft jaw 2 is designed according to the diameter of the pipe 7, so that the six clamping points 8 of the three soft jaws 2 are equally divided in 360 degrees on the outer wall of the pipe 7. Therefore, the stress points of the pipe fitting 7 can be uniformly distributed, and the deformation of the pipe fitting 7 caused by clamping is reduced to a certain extent.
The contact surface of the connecting block 5 and the soft clamping claw 2 is set to be a semi-circular convex surface, the contact surface of the soft clamping claw 2 and the connecting block 5 is set to be a semi-circular concave surface, the semi-circular convex surface of the connecting block 5 is matched with the semi-circular concave surface of the soft clamping claw 2 to form two semi-circular stress surfaces 6, which can be attached to the end part of the connecting block 5 to rotate, of the soft clamping claw 2, and the rotating axis is the axis of the shaft pin 3; this semicircular stress surface 6 transmits the clamping force of chuck 4 for soft jack catch 2 through the stress surface, can guarantee that soft jack catch 2 swings under the enough big and even condition of atress of stress surface. The semicircular stress surface 6 can be formed by adopting a bearing connection besides the shape of the connecting block 5 and the soft clamping claw 2.
The half-circular arc concave surface both ends of soft jack catch 2 have the extension face, and two extension faces lean out respectively for two sides of connecting block 5, make this extension face and the side of connecting block 5 form the contained angle to form the spacing portion 1 of soft jack catch 2, this spacing portion 1 can control the wrench movement scope of soft jack catch 2, reduces centre gripping centering deviation, reduces the wearing and tearing of soft jack catch 2 in the centre gripping.
The included angle formed by the extension surfaces at the two ends of the semi-arc concave surface of the soft claw 2 and the side surface of the connecting block 5 is usually 1-20 degrees, and different included angles of the limiting parts 1 are selected according to different diameters of the clamping pipe fittings 7.
According to the above description, the interval twisting soft clamping claw clamp of the embodiment can be attached to the outer wall of the pipe fitting in a certain range according to the ovality of the outer wall of the pipe fitting, so that the outer diameter of the pipe body is prevented from being forcibly clamped into a circular shape in the clamping process, and turning errors and elastic deformation are avoided; the rejection rate after processing is reduced, and the production efficiency is improved.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and those skilled in the art can make various changes and modifications within the spirit and scope of the present invention without departing from the spirit and scope of the appended claims.
Claims (3)
1. The interval twisting soft jaw clamp comprises a chuck and is characterized in that three connecting blocks are uniformly arranged on the surface of the chuck along the radial direction, and each connecting block is fixedly connected with the chuck;
the end part, close to the center of the chuck, of each connecting block is connected with a soft clamping jaw through a pin shaft, the clamping end of each soft clamping jaw is provided with two clamping points which are in contact with a clamped pipe fitting, and six clamping points of the three soft clamping jaws are equally divided on the outer wall of the clamped pipe fitting by 360 degrees;
the connecting block with the opposite face of soft jack catch all sets up to semi-circular stress surface, so that soft jack catch can laminate the tip of connecting block rotates, the semi-circular stress surface both ends of soft jack catch have the extension face, this extension face with the side of connecting block forms the contained angle respectively, in order to form control the spacing portion of soft jack catch wrench movement scope.
2. The interval twisting soft jaw clamp of claim 1, wherein the opposite faces of the connecting block and the soft jaw are set to be semi-circular arc-shaped convex faces, the opposite faces of the soft jaw and the connecting block are set to be semi-circular arc-shaped concave faces, and the semi-circular arc-shaped convex faces of the connecting block are matched with the semi-circular arc-shaped concave faces of the soft jaw to form the semi-circular stress faces of the connecting block and the soft jaw.
3. The interval twisting soft jaw clamp as claimed in claim 1, wherein the included angle formed by the extension surfaces at the two ends of the semicircular stress surface of the soft jaw and the side surface of the connecting block is 1-20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120322617.0U CN215315789U (en) | 2021-02-03 | 2021-02-03 | Limit interval wrench movement soft clamping jaw clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120322617.0U CN215315789U (en) | 2021-02-03 | 2021-02-03 | Limit interval wrench movement soft clamping jaw clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215315789U true CN215315789U (en) | 2021-12-28 |
Family
ID=79580805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120322617.0U Active CN215315789U (en) | 2021-02-03 | 2021-02-03 | Limit interval wrench movement soft clamping jaw clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215315789U (en) |
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2021
- 2021-02-03 CN CN202120322617.0U patent/CN215315789U/en active Active
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