CN216065595U - Pneumatic expansion chuck device - Google Patents
Pneumatic expansion chuck device Download PDFInfo
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- CN216065595U CN216065595U CN202122277920.6U CN202122277920U CN216065595U CN 216065595 U CN216065595 U CN 216065595U CN 202122277920 U CN202122277920 U CN 202122277920U CN 216065595 U CN216065595 U CN 216065595U
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- chuck
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- seat
- expansion
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Abstract
The utility model discloses a pneumatic expansion chuck device, which comprises a chuck seat and a chuck, wherein the chuck is positioned above the chuck seat, a first through hole is axially arranged on the chuck, a second through hole is arranged on the chuck seat, the position of the second through hole corresponds to that of the first through hole, the chuck consists of jaws, the pneumatic expansion chuck device also comprises a locking slide block, the locking slide block penetrates through the first through hole and the second through hole, the locking slide block moves up and down to enable the jaws to do circumferential expansion and contraction movement relative to the chuck, the jaws are connected with springs, the springs can do circumferential expansion and contraction movement relative to the chuck along with the jaws, the pneumatic expansion chuck device can quickly clamp sleeve parts in the application process, the jaws can quickly and automatically return when unclamping, and the clamping efficiency is higher compared with that of a traditional three-jaw chuck, the stability is higher, more is fit for the centre gripping of thin wall type box part.
Description
Technical Field
The utility model relates to the technical field of numerical control machining, in particular to a pneumatic expansion chuck clamping device which is used for realizing quick clamping of sleeve parts on a machining center.
Background
The mode that present numerical control processing is used for sleeve class part clamping mainly has: (1) the V-shaped jaw of the jaw vice is clamped, belong to the point clamping, the actual contact point of work piece and V-shaped jaw is only 3 points, the contact point is apt to crush, cause the appearance defect of the work piece, the clamping force is uncontrollable, it is apt to cause the clamping not tight or clamping force too big to cause the work piece deformation situation, especially the thin-walled sleeve part is apt to produce clamping not firm and clamping deformation, the jaw vice V-shaped jaw is clamped and limited to the size of V-shaped jaw of the jaw vice, the universality is not strong, can't clamp the sleeve part with more than 20 mm of diameter; (2) the clamp is characterized in that a vice copying jaw is used for clamping, the surface clamping belongs to surface clamping, the excircle of a workpiece is in contact with the jaw surface, the stability is superior to that of a V-shaped jaw, the clamping force is also uncontrollable, for clamping thin-wall sleeve parts, the inner hole is hollow, the wall thickness is thin, the clamping is easy to deform, in addition, the copying jaw is high in specificity, the clamp cannot be suitable for clamping sleeve parts with different diameters, and obviously, the clamp is uneconomical and unsuitable for production modes of various parts; (3) the three-jaw chuck is similar to V-shaped jaw clamping, and due to the unique design of the three-jaw chuck, the outer circle of the inner jaw clamp and the inner hole of the outer jaw clamp can be freely clamped by sleeve parts of different specifications, so that the three-jaw chuck is high in universality, but the clamping mode still belongs to point clamping, the conditions of workpiece clamping damage and clamping deformation exist at any time, and the three-jaw chuck is not suitable for clamping thin-wall sleeve parts.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model aims to provide the pneumatic expansion chuck device for the thin-wall sleeve type parts, which is convenient to clamp, high in efficiency, low in cost, flexible and strong in universality.
The utility model relates to a pneumatic expansion chuck device for sleeve parts, which comprises a chuck seat and a chuck, wherein the chuck seat is made of 45 # steel and subjected to quenching treatment, the Rockwell hardness of the steel can reach HRC40 degrees, the chuck is positioned above the chuck seat, the chuck is axially provided with a first through hole, the chuck seat is provided with a second through hole, the second through hole corresponds to the first through hole in position, the chuck consists of jaws, the pneumatic expansion chuck device further comprises a locking slide block, the locking slide block penetrates through the first through hole and the second through hole, the locking slide block can make the jaws perform circumferential expansion and contraction movement relative to the chuck by moving up and down, the jaws are connected with springs, the springs can perform circumferential expansion and contraction movement relative to the chuck along with the jaws, the springs are made of high-performance spring steel and are durable, and the pneumatic expansion chuck device has the function that when a driving device ejects the locking slide block out, the claw is pushed to reset. The device can realize that the clamp is tight fast to sleeve class part at the in-process of using, and the jack catch can quick self return when the pine presss from both sides, compare with traditional three-jaw chuck, its clamping efficiency is faster, and stability is higher, more is fit for thin wall type sleeve part's centre gripping.
Further, the locking slider comprises a driving part and a connecting part, the driving part is a circular truncated cone, the upper bottom surface of the circular truncated cone is connected with the connecting part, the cross-sectional area of the lower bottom surface of the circular truncated cone is larger than that of the lower surface of the first through hole, and when the driving part moves downwards through the first through hole, the clamping jaws do circumferential expansion motion.
Furthermore, the side face, close to the first through hole, of the chuck is provided with a wedge-shaped inclined face, and the circular truncated cone can slide up and down along the wedge-shaped inclined face.
Furthermore, the chuck is a four-jaw pneumatic chuck, four jaws of the chuck are respectively connected with four springs, and the four springs synchronously do circumferential expansion or contraction motion relative to the chuck under the action of the jaws.
Further, a slide rail groove is formed in the upper surface of the chuck base and penetrates through the center of the chuck, and a sliding block is arranged on the lower surface of the clamping jaw and can slide along the slide rail groove.
Further, still including keeping off the seat, keep off the seat set up in the slide rail groove is kept away from the one end of centre of a circle, the spring set up in the slide rail groove, spring one end with keep off the seat and connect, its effect is the activity space of restriction spring, prevents the spring to pop out, the other end with the jack catch is connected. The stop seat is provided with a threaded hole, and the stop seat is fixed in the slide rail groove through the threaded hole by a screw.
Further, the locking device further comprises a driving device, the driving device is arranged in the second through hole, the driving device is connected with the connecting portion of the locking sliding block, and the driving device pushes the locking sliding block to move up and down.
The utility model has the beneficial effects that:
1) the pneumatic expansion chuck device can quickly clamp sleeve parts in the application process, the clamping jaws can quickly and automatically return when the clamping jaws are loosened, and compared with a traditional three-jaw chuck, the pneumatic expansion chuck device is quicker in clamping efficiency and higher in stability, and is more suitable for clamping thin-wall sleeve parts.
2) The utility model can adjust the clamping range of the clamping jaw by selecting the driving devices with different leads, can freely clamp sleeve workpieces with different inner diameters, and has strong flexibility.
3) According to the utility model, a set of efficient pneumatic expansion chuck device is formed by assembling all components, so that the problems of deformation and unreliable clamping of the traditional thin-wall sleeve part are solved, and the clamping yield and production efficiency of the thin-wall sleeve part are greatly improved.
4) The chuck seat, the clamping jaws, the locking slide block and the spring baffle seat material adopt a quenching process, and have Rockwell hardness of more than HRC40 degrees, high hardness, strong rigidity and long service life.
Drawings
FIG. 1 is a perspective view of a pneumatic expansion chuck assembly in accordance with a preferred embodiment of the present invention;
FIG. 2 is a cross-sectional view of a pneumatic expansion chuck assembly in accordance with a preferred embodiment of the present invention;
FIG. 3 is a perspective view of a pneumatic expansion chuck assembly with the chuck base removed in accordance with a preferred embodiment of the present invention;
fig. 4 is a perspective view of a chuck base according to a preferred embodiment of the utility model.
In the figure: 1. a workpiece; 2. a blocking seat; 21. a threaded hole; 3. a spring; 4. a drive device; 6. a chuck base; 61. a second through hole; 62. a slide rail groove; 63. a fourth via hole; 7. a chuck; 71. a claw; 72. a slider; 8. locking the sliding block; 81. a drive section; 82. a connecting portion.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.
Referring to fig. 1 to 4, the pneumatic expansion chuck device in the embodiment comprises a chuck seat 6 and a chuck 7, wherein the chuck seat 6 is made of 45 # steel and subjected to quenching treatment, the rockwell hardness can reach HRC40, a slide rail groove 62 is formed in the upper surface of the chuck seat 6, the roughness of the slide rail groove 62 is better than Ra 0.8, so that the friction resistance is low, the slide rail groove 62 penetrates through the center of the chuck seat 6, a fourth through hole 63 is axially formed in the chuck seat, and the chuck seat can be fixed on other equipment through the fourth through hole 63. The chuck 7 is composed of jaws 71, the jaws 71 are made of 45 # steel and subjected to quenching treatment, the Rockwell hardness can reach HRC40 degrees, sliding blocks 72 are arranged on the lower surfaces of the jaws 71, and the sliding blocks 72 can slide along the sliding rail grooves 62. Jack catch 71 is connected spring 3, spring 3 can follow the jack catch 71 is relative chuck 7 is circumference expansion and contraction motion, the spring 3 material is high performance spring steel, and durable, its effect is for when drive arrangement 4 is ejecting with locking slider 8, promotes jack catch 71 and resets. Still include and keep off seat 2, keep off seat 2 set up in the one end of centre of a circle is kept away from to slide rail groove 62, spring 3 set up in the slide rail groove 62, spring 3 one end with keep off seat 2 and connect, the other end with jack catch 71 connects. The baffle seat 2 is provided with a threaded hole 21, and a screw fixes the baffle seat 2 in the slide rail groove 62 through the threaded hole 21. The retainer 2 is made of 45 # steel and is quenched, the Rockwell hardness can reach HRC40 degrees, and the action of the retainer is to limit the moving space of the spring 3 and prevent the spring 3 from popping out.
The chuck 7 is a four-jaw pneumatic chuck 7, four jaws 71 of the chuck 7 are respectively connected with four springs 3, and the four springs 3 synchronously perform circumferential expansion or contraction motion relative to the chuck 7 under the action of the jaws 71. Chuck 7 is located chuck seat 6 tops, chuck 7 axial is provided with first through-hole, the chuck is close to the side of first through-hole sets up to wedge inclined plane, the round platform can be followed slide from top to bottom on the wedge inclined plane. The chuck base 6 is provided with a second through hole 61, the second through hole 61 corresponds to the first through hole in position, the locking slide block 8 is further provided, the locking slide block 8 is made of 45 # steel and is subjected to quenching treatment, the Rockwell hardness can reach HRC40 degrees, the locking slide block 8 comprises a driving part 81 and a connecting part 82, the driving part 81 is a circular table, the upper bottom surface of the circular table is connected with the connecting part 82, one end, far away from the circular table, of the connecting part 82 is provided with an M8 standard external thread, and the connecting part is connected with a driving device through a thread. The surface of the circular truncated cone inclined plane is subjected to highlight treatment, the roughness is superior to Ra 0.8, and smaller frictional resistance is ensured.
The cross sectional area of the lower bottom surface of the circular truncated cone is larger than that of the lower surface of the first through hole, and when the driving portion 81 moves downwards through the first through hole, the clamping jaws 71 do circumferential expansion motion. The locking slider 8 can make the jaws 71 perform circumferential expansion and contraction movement relative to the chuck 7 by moving up and down through the first through hole.
The utility model further comprises a driving device 4, wherein the driving device 4 is arranged in the second through hole 61, the driving device 4 is connected with the connecting part of the locking slide block 8, and the driving device 4 pushes the locking slide block 8 to move up and down.
The working principle of the utility model is as follows:
during specific clamping, the workpiece 1 is sleeved into the outer side of the clamping jaw 71, the locking slide block 8 is pressed downwards through the driving device 4, when the locking slide block 8 is pressed downwards, the axial downward force of the locking slide block 8 is converted into the radial force of the clamping jaw 71 through the interaction of the wedge-shaped inclined surfaces of the locking slide block 8 and the clamping jaw 71, then the radial free outward expansion of the clamping jaw 71 is realized, and the clamping of the workpiece 1 is realized. When the locking slide block 8 is ejected out by the driving device 4, the locking slide block 8 is separated from the wedge-shaped inclined surface of the jaw 71, the axial pressure is lost, and the original compressed spring 3 pushes the jaw 71 to recover to the initial position, so that the workpiece 1 is loosened.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (7)
1. A pneumatic expansion chuck device is characterized by comprising a chuck seat (6) and a chuck (7), the chuck (7) is positioned above the chuck seat (6), the chuck (7) is axially provided with a first through hole, a second through hole (61) is arranged on the chuck seat (6), the position of the second through hole (61) corresponds to that of the first through hole, the chuck (7) is composed of jaws (71) and also comprises a locking slide block (8), the locking slide block (8) passes through the first through hole and the second through hole (61), the locking sliding block (8) moves up and down to enable the clamping jaws (71) to do circumferential expansion and contraction movement relative to the clamping chuck (7), the jack catch (71) is connected with the spring (3), and the spring (3) can move along with the jack catch (71) relative to the chuck (7) in a circumferential expansion and contraction mode.
2. The pneumatic expansion chuck device according to claim 1, wherein the locking slider (8) comprises a driving part (81) and a connecting part (82), the driving part (81) is a circular truncated cone, the upper bottom surface of the circular truncated cone is connected with the connecting part (82), the cross-sectional area of the lower bottom surface of the circular truncated cone is larger than that of the lower surface of the first through hole, and when the driving part (81) moves downwards through the first through hole, the jaws (71) perform circumferential expansion motion.
3. A pneumatic expansion chuck device according to claim 2, wherein the side of the chuck (7) adjacent to the first through hole is provided with a wedge-shaped inclined surface, and the circular truncated cone can slide up and down along the wedge-shaped inclined surface.
4. A pneumatic expansion chuck device according to claim 3, wherein the chuck (7) is a four-jaw pneumatic chuck (7), four jaws (71) of which are respectively connected with four springs (3), and the four springs (3) synchronously perform circumferential expansion or contraction movement relative to the chuck (7) under the action of the jaws (71).
5. A pneumatic expansion chuck device according to claim 4, wherein the chuck seat (6) is provided with a slide rail groove (62) on the upper surface, the slide rail groove (62) passes through the center of the chuck (7), the jaws (71) are provided with slide blocks (72) on the lower surface, and the slide blocks (72) can slide along the slide rail groove (62).
6. A pneumatic expansion chuck device according to claim 5, characterized by further comprising a stop seat (2), wherein the stop seat (2) is arranged at one end of the slide rail groove (62) far away from the center of the circle, the spring (3) is arranged in the slide rail groove (62), one end of the spring (3) is connected with the stop seat (2), and the other end of the spring is connected with the clamping jaw (71).
7. A pneumatic expansion chuck device according to any one of claims 2-6, further comprising an actuating device, said actuating device being disposed in said second through hole (61), said actuating device being connected to said connecting portion (82) of said locking slide (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122277920.6U CN216065595U (en) | 2021-09-18 | 2021-09-18 | Pneumatic expansion chuck device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122277920.6U CN216065595U (en) | 2021-09-18 | 2021-09-18 | Pneumatic expansion chuck device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216065595U true CN216065595U (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122277920.6U Active CN216065595U (en) | 2021-09-18 | 2021-09-18 | Pneumatic expansion chuck device |
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|---|---|
| CN (1) | CN216065595U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114833366A (en) * | 2022-05-19 | 2022-08-02 | 鹰普航空科技有限公司 | Pneumatic self-centering clamp with adjustable clamping jaw pressure |
-
2021
- 2021-09-18 CN CN202122277920.6U patent/CN216065595U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114833366A (en) * | 2022-05-19 | 2022-08-02 | 鹰普航空科技有限公司 | Pneumatic self-centering clamp with adjustable clamping jaw pressure |
| CN114833366B (en) * | 2022-05-19 | 2023-08-22 | 鹰普航空科技有限公司 | Claw-adjustable pneumatic self-centering clamp |
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