CN212095107U - Self-centering chuck - Google Patents
Self-centering chuck Download PDFInfo
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- CN212095107U CN212095107U CN202020838970.XU CN202020838970U CN212095107U CN 212095107 U CN212095107 U CN 212095107U CN 202020838970 U CN202020838970 U CN 202020838970U CN 212095107 U CN212095107 U CN 212095107U
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- jaw
- base plate
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- driving
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Abstract
The utility model discloses a self-centering chuck, which comprises a base plate, a base plate cover plate, a jaw structure and a transmission gear; the base plate cover plate covers the base plate; openings are formed in the base plate and the base plate cover plate, so that a workpiece can be conveniently hoisted from the openings; the jaw structure comprises a driving jaw and a driven jaw; a transmission gear is arranged between the driving clamping jaw and the driven clamping jaw and is fixedly arranged on the base plate through a transmission gear mounting hole; the driving clamping jaw drives the driven clamping jaw to move through the transmission gear, so that the driving clamping jaw and the driven clamping jaw are synchronously clamped or loosened, and the self-centering function is realized. Adopt the utility model discloses a initiative jack catch drives driven jack catch through drive gear and moves to make initiative jack catch and driven jack catch synchronous clamping perhaps loosen, realize from the function of centering, be convenient for fix processing to the pipeline, improve the efficiency and the convenience of technologies such as pipeline welding.
Description
Technical Field
The utility model relates to the technical field of machining, especially a from centering chuck.
Background
In the process of pipeline welding, especially in the pipeline welding of the petroleum industry, because the two ends of the pipelines of some pipelines are provided with elbows, the pipelines cannot penetrate through the existing self-centering chuck and cannot be welded. The special-shaped pipeline cannot be welded through the existing chuck, and the efficiency and convenience of pipeline welding are affected.
SUMMERY OF THE UTILITY MODEL
For solving the problem that exists among the prior art, the utility model aims at providing a from centering chuck, the pipeline that is convenient for have the elbow to both ends is fixed the processing, improves pipeline welded efficiency.
In order to achieve the above object, the utility model adopts the following technical scheme:
a self-centering chuck comprises a base disc, a base disc cover plate, a clamping jaw structure and a transmission gear; the base plate cover plate covers the base plate; openings are formed in the base plate and the base plate cover plate, so that a workpiece can be conveniently hoisted from the openings;
the jaw structure comprises a driving jaw and a driven jaw; a transmission gear is arranged between the driving clamping jaw and the driven clamping jaw, is fixedly arranged on the base plate through a transmission gear mounting hole and is arranged in a chain manner; the driving clamping jaw drives the driven clamping jaw to move through the transmission gear, so that the driving clamping jaw and the driven clamping jaw are synchronously clamped or loosened, and the self-centering function is realized.
Further, the openings on the base disc and the base disc cover plate are U-shaped openings; and cutting the top of the opening to make the top surface flat.
Furthermore, the driving clamping jaws are arranged in the radial direction of the openings of the base plate and the base plate cover plate, driven clamping jaws are arranged on two sides of the driving clamping jaws, and even numbers of transmission gears are arranged between the driving clamping jaws and the driven clamping jaws, so that the driving clamping jaws and the driven clamping jaws synchronously move, and the self-centering function is realized.
Further, the driving jaw and the driven jaw are arranged at an included angle of 120 degrees.
Furthermore, four transmission gears are arranged between the driving jaw and the driven jaw.
Furthermore, the driving jaw and the driven jaw respectively comprise a linear guide rail, a sliding block mounting seat, a rack and a top jaw; the linear guide rail is fixedly arranged in the claw mounting groove on the base plate, and a sliding block is arranged on the linear guide rail and slides along the linear guide rail; the upper part of the sliding block is fixedly provided with a sliding block mounting seat; a rack is arranged on the slide block mounting seat and is used for embedding the transmission gear; the driving clamping jaw drives the driven clamping jaw to synchronously move;
the top claw is arranged on the base disc cover plate and fixedly connected with the sliding block mounting seat of the claw structure through the claw guide groove in the middle of the base disc cover plate, so that the whole claw structure can do linear motion along with the linear guide rail.
Furthermore, pressing blocks are further arranged on the left side and the right side of the top claw, and the top claw is inserted into a claw positioning spigot on the base plate cover plate through the pressing blocks, so that the top claw is positioned conveniently.
Further, the whole sliding block mounting seat is arched or omega-shaped; and a wedge-shaped intermittent adjusting block is also arranged between the rack and the sliding block mounting seat and is used for adjusting the distance between the rack and the transmission gear.
Furthermore, a screw nut and a fixed seat are also arranged on the driving clamping jaw; the fixed seat is fixedly arranged on the base plate cover plate and is used for fixing a screw rod of a screw rod nut; the nut of the screw rod nut is fixedly connected with the top jaw, and the driving clamping jaw is pushed to do linear motion by rotating the nut of the screw rod nut.
Further, a lifting lug is further arranged at the top of the self-centering chuck.
The utility model has the advantages that:
the driving clamping jaw drives the driven clamping jaw to move through the transmission gear, so that the driving clamping jaw and the driven clamping jaw are synchronously clamped or loosened, a self-centering function is realized, the pipeline is convenient to fix and process, and the efficiency and convenience of processes such as pipeline welding are improved.
Drawings
FIG. 1 is a schematic view of the structure of the base plate of the present invention;
FIG. 2 is a schematic view of the structure of the cover plate of the base plate of the present invention;
fig. 3 is a front view of the self-centering chuck of the present invention;
fig. 4 is a schematic structural view of the self-centering chuck of the present invention;
reference numerals: the clamping jaw positioning device comprises a base disc 1, a clamping jaw mounting groove 2, a transmission gear mounting hole 3, a base disc cover plate 4, a clamping jaw guide groove 5, a clamping jaw positioning spigot 6, a rack 7, a linear guide rail 8, a transmission gear 9, a sliding block mounting seat 10, a fixing seat 11, a top jaw 12, a pressing block 13, a lead screw nut 14, a driving clamping jaw 15 and a driven clamping jaw 16.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to fig. 1-4.
In one embodiment, as shown in fig. 1-4, a self-centering chuck comprises a base plate 1, a base plate cover plate 4, a jaw structure and a transmission gear 9;
the base plate 1 and the base plate cover plate 4 are both made of welded structural parts and are annealed after welding; the base plate cover plate is arranged in a shape adapting to the base plate, and the base plate cover plate 4 covers the base plate 1; wherein, the base plate 1 and the base plate cover plate 4 are both provided with openings, preferably U-shaped openings, so that the special-shaped pipeline can be conveniently hoisted from the openings. And the top of the opening is cut, so that the top surface is flat and the pipeline is not easily scratched. The jaw structure comprises a driving jaw 15 and a driven jaw 16; a transmission gear 9 is arranged between the driving clamping jaw 15 and the driven clamping jaw 16, and is fixedly arranged on the base plate 1 through a transmission gear mounting hole 3 and is in chain arrangement; the driving jaw 15 can drive the driven jaw 16 to move through the transmission gear 9, so that the driving jaw and the driven jaw are synchronously clamped or loosened, and a self-centering function is realized.
In another embodiment, a three-jaw chuck is exemplified; the radial direction of the opening of the base disc 1 is provided with a driving claw 15, and driven claws 16 are arranged on two sides of the driving claw 15, preferably at an included angle of 120 degrees. The number of the transmission gears 9 between the driving clamping jaw and the driven clamping jaw is even, preferably four; therefore, the synchronous motion of the driving clamping jaw and the driven clamping jaw is realized, and the self-centering function is realized.
The driving jaw and the driven jaw of the jaw structure respectively comprise a rack 7, a linear guide rail 8, a sliding block mounting seat 10, a wedge-shaped gap adjusting block, a top jaw 12 and a pressing block 13.
The top claw 12 is arranged on the base plate cover plate 4, pressing blocks 13 are further arranged on the left side and the right side of the top claw 12, and the top claw 12 is inserted into the claw positioning spigot 6 on the base plate cover plate 4 through the pressing blocks 13, so that the top claw 12 is conveniently positioned; and the clamping jaw is fixedly connected with a sliding block mounting seat 10 of the clamping jaw structure through a clamping jaw guide groove 5 in the middle of the base plate cover plate 4, so that the whole clamping jaw structure can do linear motion along with the linear guide rail 8.
The driving claw 15 is also provided with a screw nut 14 and a fixed seat 11. A feed screw nut 14 is further arranged on one side, away from the opening, of the top jaw 12 of the driving clamping jaw, a fixed seat 11 is arranged on the other side of the feed screw nut 14, and the fixed seat 11 is fixedly arranged on the base plate cover plate 4 and used for fixing a feed screw of the feed screw nut 14; the nut of the feed screw nut 14 is fixedly connected with the top jaw 12, and the top jaw 12 of the driving clamping jaw is pushed to do linear motion by rotating the nut of the feed screw nut 14, so that the whole driving clamping jaw is further pushed to do linear motion.
In another embodiment, the base plate cover plate 4 covers the base plate 1 to form a U-shaped structure, and a lifting lug is arranged at the top of the U-shaped structure, so that the whole self-centering chuck can be conveniently lifted.
In another embodiment, the self-centering chuck can also be other multi-jaw chucks, and is characterized in that a plurality of driven jaws 16 are arranged, and a transmission gear 9 is arranged between the driven jaws 16; the driving clamping jaw can drive the driven clamping jaw to move through the transmission gear 9, so that the driving clamping jaw and the driven clamping jaw are synchronously clamped or loosened, and the self-centering function is realized.
During operation, the self-centering chuck is installed, a workpiece is hoisted to the middle of the self-centering chuck through an opening in the top of the self-centering chuck, and then the lead screw nut 14 is manually rotated forwards by a special wrench to push the driving clamping jaw to move towards the center of the self-centering chuck along the linear guide rail 8; the driven clamping jaw is driven by the transmission gear 9 to synchronously clamp the workpiece; after welding, the feed screw nut 14 is rotated reversely, so that the driving clamping jaw drives the driven clamping jaw to loosen the workpiece, and the workpiece is lifted away to prepare for the next workpiece operation.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (10)
1. A self-centering chuck is characterized by comprising a base disc, a base disc cover plate, a clamping jaw structure and a transmission gear; the base plate cover plate covers the base plate; openings are formed in the base plate and the base plate cover plate, so that a workpiece can be conveniently hoisted from the openings;
the jaw structure comprises a driving jaw and a driven jaw; a transmission gear is arranged between the driving clamping jaw and the driven clamping jaw, is fixedly arranged on the base plate through a transmission gear mounting hole and is arranged in a chain manner; the driving clamping jaw drives the driven clamping jaw to move through the transmission gear, so that the driving clamping jaw and the driven clamping jaw are synchronously clamped or loosened, and the self-centering function is realized.
2. The self-centering chuck according to claim 1, wherein said openings in said base plate and base plate cover plate are U-shaped openings; and cutting the top of the opening to make the top surface flat.
3. The self-centering chuck according to claim 1, wherein the driving jaws are disposed in the radial direction of the openings of the base plate and the base plate cover plate, the driven jaws are disposed on both sides of the driving jaws, and an even number of transmission gears are disposed between the driving jaws and the driven jaws, so that the driving jaws and the driven jaws move synchronously and perform the self-centering function.
4. The self-centering chuck according to claim 3, wherein said driving jaws and said driven jaws are disposed at an angle of 120 ° therebetween.
5. The self-centering chuck according to claim 3, wherein there are four drive gears between said driving jaws and said driven jaws.
6. The self-centering chuck according to any one of claims 1 to 5, wherein said driving jaw and said driven jaw each comprise a linear guide, a slider mount, a rack and a top jaw;
the linear guide rail is fixedly arranged in the claw mounting groove on the base plate, and a sliding block is arranged on the linear guide rail and slides along the linear guide rail; the upper part of the sliding block is fixedly provided with a sliding block mounting seat; a rack is arranged on the slide block mounting seat and is used for embedding the transmission gear; the driving clamping jaw drives the driven clamping jaw to synchronously move;
the top claw is arranged on the base disc cover plate and fixedly connected with the sliding block mounting seat of the claw structure through the claw guide groove in the middle of the base disc cover plate, so that the whole claw structure can do linear motion along with the linear guide rail.
7. The self-centering chuck according to claim 6, wherein the left and right sides of the top jaw are further provided with press blocks, and the top jaw is inserted into the jaw positioning rabbet on the base plate cover plate through the press blocks, so that the top jaw can be positioned conveniently.
8. The self-centering chuck according to claim 6, wherein said slider mount is generally arcuate or omega-shaped; and a wedge-shaped intermittent adjusting block is also arranged between the rack and the sliding block mounting seat and is used for adjusting the distance between the rack and the transmission gear.
9. The self-centering chuck according to claim 6, wherein said driving jaws are further provided with a feed screw nut and a fixed seat; the fixed seat is fixedly arranged on the base plate cover plate and is used for fixing a screw rod of a screw rod nut; the nut of the screw rod nut is fixedly connected with the top jaw, and the driving clamping jaw is pushed to do linear motion by rotating the nut of the screw rod nut.
10. The self-centering chuck according to claim 6, wherein said self-centering chuck top is further provided with a lifting lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020838970.XU CN212095107U (en) | 2020-05-19 | 2020-05-19 | Self-centering chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020838970.XU CN212095107U (en) | 2020-05-19 | 2020-05-19 | Self-centering chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212095107U true CN212095107U (en) | 2020-12-08 |
Family
ID=73622115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020838970.XU Active CN212095107U (en) | 2020-05-19 | 2020-05-19 | Self-centering chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212095107U (en) |
-
2020
- 2020-05-19 CN CN202020838970.XU patent/CN212095107U/en active Active
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