CN209986249U - Lathe three-jaw clamp mechanism with automatic tensioning and positioning functions - Google Patents
Lathe three-jaw clamp mechanism with automatic tensioning and positioning functions Download PDFInfo
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- CN209986249U CN209986249U CN201920657905.4U CN201920657905U CN209986249U CN 209986249 U CN209986249 U CN 209986249U CN 201920657905 U CN201920657905 U CN 201920657905U CN 209986249 U CN209986249 U CN 209986249U
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Abstract
A lathe three-jaw clamp mechanism with an automatic tensioning and positioning function comprises a chuck main body (1) and three jaws (2) with the same structure; the chuck body (1) is connected with three clamping jaws (2) in a sliding manner, and the three clamping jaws (2) are uniformly distributed along the circumferential direction of a central shaft of the chuck body (1); the clamping end of each clamping jaw (2) is provided with a wedge (3), a sliding block (4), a spring (5) and a pressing jaw (6); the clamping end of the clamping jaw (2) is fixedly connected with the inclined wedge (3); the inclined wedge (3) is connected with the sliding block (4) in a sliding manner; the spring (5) is abutted between the sliding block (4) and the end face, far away from the chuck body (1), of the clamping jaw (2). The utility model has the advantages of simple structure, can carry out the function of taut location to the tube-shape machined part in the clamping automatically.
Description
Technical Field
The utility model relates to the technical field of machining, specifically a lathe three-jaw anchor clamps mechanism with automatic taut locate function.
Background
When a cylindrical workpiece is machined by a lathe, the workpiece needs to be clamped and positioned firstly, and a three-jaw chuck is adopted in the existing lathe equipment for clamping the workpiece; specifically, the chuck body is connected with three clamping jaws in a sliding manner, and the three clamping jaws are uniformly distributed along the circumferential direction of a central shaft of the chuck body; when the cylindrical workpiece is clamped: firstly, three clamping jaws extend into a cylindrical workpiece; then, the three clamping jaws synchronously open along the radial direction of the chuck body until the clamping ends of the three clamping jaws abut against the inner wall surface of the peripheral side of the cylindrical workpiece, and the workpiece can be clamped.
However, when the three-jaw clamp mechanism is used, an operator is required to manually check the clamping condition of the workpiece, and the central axis of the cylindrical workpiece and the central axis of the chuck body are not overlapped, so that the operator is required to manually adjust the clamping condition of the workpiece to be in place; the method is troublesome to operate, and the problem of misoperation is easily caused after an operator works for a long time, so that the workpiece is processed by mistake.
Thus, the prior art is subject to improvement and advancement.
SUMMERY OF THE UTILITY MODEL
To the weak point in prior art, the utility model provides a lathe three-jaw anchor clamps mechanism with automatic taut locate function for the three-jaw anchor clamps mechanism of lathe can the position of automatic adjustment tube-shape machined part when the clamping tube-shape machined part, and then makes the center pin of tube-shape machined part and the center pin coincidence of chuck main part.
The utility model provides a following technical scheme:
a lathe three-jaw clamp mechanism with an automatic tensioning and positioning function comprises a chuck main body (1) and three jaws (2) with the same structure; the chuck body (1) is connected with three clamping jaws (2) in a sliding manner, and the three clamping jaws (2) are uniformly distributed along the circumferential direction of a central shaft of the chuck body (1); the clamping end of each clamping jaw (2) is provided with a wedge (3), a sliding block (4), a spring (5) and a pressing jaw (6); the clamping end of the clamping jaw (2) is fixedly connected with the inclined wedge (3); the inclined wedge (3) is connected with the sliding block (4) in a sliding manner; the spring (5) is abutted between the sliding block (4) and the end face, far away from the chuck body (1), of the clamping jaw (2); the sliding block (4) is fixedly connected with the pressing claw (6) matched with the inner wall surface on the peripheral side of the cylindrical workpiece; the chuck body (1) is also provided with a plurality of supporting columns (7) which are in the same direction as the clamping jaws (2) and are matched with the inner wall surface of the bottom of the cylindrical workpiece.
Preferably, a groove surface (8) is formed on the end surface of each pressing claw (6) matched with the cylindrical workpiece, and a plurality of anti-skid stripes are arranged in the groove surface (8).
Preferably, blind holes are formed in the end faces, corresponding to the clamping jaws (2), of the sliding block (4), and two ends of the spring (5) are abutted to the blind holes of the sliding block (4) and the clamping jaws (2) respectively.
Preferably, the wedge (3) is formed with a sliding groove (9), and the sliding groove (9) is connected with the sliding block (4) in a sliding manner; the end face, far away from the chuck body (1), of the wedge (3) is further connected with a limiting bolt (10) for limiting the stroke of the sliding block (4) in a threaded mode.
The utility model provides a following technical scheme:
compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a when three jack catch carried out the clamping to the tube-shape machined part, press the claw to constitute a whole with the slider, receive the effort of work piece internal face and slide wedge simultaneously for press the claw to slide along the slide wedge with the slider in step, and then make and press the claw to take up the location with the work piece along the jack catch to the direction of chuck main part.
Drawings
Fig. 1 is a perspective view of the present invention;
FIG. 2 is an exploded view of a portion of the components of the present invention;
fig. 3 is a top view of the present invention;
FIG. 4 is a cross-sectional view taken along A-A of FIG. 3;
FIG. 5 is a cross-sectional view taken along the direction A-A in FIG. 2 after clamping the workpiece according to the present invention;
the reference numbers in the figures are respectively: (1) the clamping chuck comprises a chuck body, (2) clamping jaws, (3) a wedge, (4) a sliding block, (5) a spring, (6) a pressing jaw, (7) a supporting column, (8) an anti-skidding groove, (9) a sliding groove, (10) a limiting bolt, (11) a boss and (B) a cylindrical workpiece.
Detailed Description
The technical solution of the present invention is further explained with reference to the accompanying drawings.
Examples
A lathe three-jaw clamp mechanism with an automatic tensioning and positioning function comprises a chuck body 1 and three jaws 2 with the same structure; the chuck body 1 is connected with three jaws 2 in a sliding manner, the three jaws 2 are uniformly distributed along the circumferential direction of the central shaft of the chuck body 1, and here, it should be noted that the chuck body 1, the jaws 2 are not in a conventional structure and connection relationship in the art. The clamping end of each clamping jaw 2 is provided with a wedge 3, a sliding block 4, a spring 5 and a pressing jaw 6; the clamping end of the clamping jaw 2 is fixedly connected with the inclined wedge (3); the inclined wedge 3 is connected with the sliding block 4 in a sliding manner; the spring 5 is abutted between the sliding block 4 and the end face of the jaw 2 far away from the chuck body 1; the slide block 4 is fixedly connected with the pressing claw 6, and the pressing claw 6 is matched with the inner wall surface of the periphery of the cylindrical workpiece B; chuck body 1 still be equipped with a plurality of with jack catch 2 syntropy's support column 7, in this embodiment: the number of the support columns 7 is three, and the free ends of the three support columns 7 are provided with bosses 11 which are used as support points of the inner wall surface of the bottom of the cylindrical workpiece B; when all three of the bosses 11 abut against the inner wall surface of the bottom of the cylindrical workpiece B, the central axis of the chuck body 1 coincides with the central axis of the cylindrical workpiece B.
Furthermore, a groove surface 8 is formed on the end surface of each pressing 6 claw matched with the cylindrical workpiece B, and a plurality of anti-skid stripes are arranged in the groove surface 8; the friction force between the pressing claw 6 and the inner wall surface of the tubular workpiece B is increased, so that the matching is firmer.
Furthermore, blind holes are formed in the end faces, corresponding to the clamping jaws 2, of the sliding block 4, and two ends of the spring 5 are abutted against the blind holes of the sliding block 4 and the clamping jaws 2 respectively.
Further, a sliding groove 9 is formed in the wedge 3, and the sliding groove 9 is connected with the sliding block 4 in a sliding manner; the end face, far away from the chuck body 1, of the wedge 3 is further in threaded connection with a limiting bolt 10 for limiting the stroke of the sliding block 4, and the sliding block 4 is prevented from being separated from the sliding groove 9.
The working principle of the utility model is as follows:
firstly, after the three jaws 2 extend into the cylindrical workpiece, the three jaws 2 are synchronously far away from the central axis of the chuck body 1 along the radial direction of the chuck body 1; then, when the pressing claw 6 abuts against the inner wall surface on the peripheral side of the cylindrical workpiece, the claw 2 continues to move, and at this time, the cylindrical workpiece B and the wedge 3 jointly press the sliding block 4 and the pressing claw 6, so that the sliding block 4 and the pressing claw 6 can pull the cylindrical workpiece B to move along the claw 2 towards the chuck main body 1; and finally, when the bosses on the three support columns 7 are all abutted against the inner wall surface of the bottom of the cylindrical workpiece B, the cylindrical workpiece B is clamped.
To sum up, the utility model discloses an foretell structural design for three-jaw anchor clamps mechanism of lathe can be when clamping tube-shape work piece B automatic adjustment tube-shape clamping instrument, has simple structure, reliable advantage.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A lathe three-jaw clamp mechanism with an automatic tensioning and positioning function comprises a chuck main body (1) and three jaws (2) with the same structure; the chuck body (1) is connected with three clamping jaws (2) in a sliding manner, and the three clamping jaws (2) are uniformly distributed along the circumferential direction of a central shaft of the chuck body (1); the method is characterized in that: the clamping end of each clamping jaw (2) is provided with a wedge (3), a sliding block (4), a spring (5) and a pressing jaw (6); the clamping end of the clamping jaw (2) is fixedly connected with the inclined wedge (3); the inclined wedge (3) is connected with the sliding block (4) in a sliding manner; the spring (5) is abutted between the sliding block (4) and the end face, far away from the chuck body (1), of the clamping jaw (2); the sliding block (4) is fixedly connected with the pressing claw (6) matched with the inner wall surface on the peripheral side of the cylindrical workpiece; the chuck body (1) is also provided with a plurality of supporting columns (7) which are in the same direction as the clamping jaws (2) and are matched with the inner wall surface of the bottom of the cylindrical workpiece.
2. The lathe three-jaw clamp mechanism with automatic tensioning and positioning functions as claimed in claim 1, wherein: a groove surface (8) is formed on the end surface of each pressing claw (6) matched with the cylindrical workpiece, and a plurality of anti-skid stripes are arranged in the groove surface (8).
3. The lathe three-jaw clamp mechanism with automatic tensioning and positioning functions as claimed in claim 1, wherein: the slider (4) with the terminal surface that the jack catch (2) corresponds all forms the blind hole, the both ends of spring (5) support respectively and lean on slider (4) with in the blind hole of jack catch (2).
4. The lathe three-jaw clamp mechanism with automatic tensioning and positioning functions as claimed in claim 1, wherein: the inclined wedge (3) is formed with a sliding groove (9), and the sliding groove (9) is connected with the sliding block (4) in a sliding manner; the end face, far away from the chuck body (1), of the wedge (3) is further connected with a limiting bolt (10) for limiting the stroke of the sliding block (4) in a threaded mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920657905.4U CN209986249U (en) | 2019-05-08 | 2019-05-08 | Lathe three-jaw clamp mechanism with automatic tensioning and positioning functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920657905.4U CN209986249U (en) | 2019-05-08 | 2019-05-08 | Lathe three-jaw clamp mechanism with automatic tensioning and positioning functions |
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| Publication Number | Publication Date |
|---|---|
| CN209986249U true CN209986249U (en) | 2020-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920657905.4U Active CN209986249U (en) | 2019-05-08 | 2019-05-08 | Lathe three-jaw clamp mechanism with automatic tensioning and positioning functions |
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| CN (1) | CN209986249U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111515726A (en) * | 2020-05-27 | 2020-08-11 | 南京高速齿轮制造有限公司 | Clamping device |
| CN111702197A (en) * | 2020-06-01 | 2020-09-25 | 珠海市润星泰电器有限公司 | Automatic quick-change automatic lathe fixture with automatic positioning function |
| CN115139117A (en) * | 2022-09-01 | 2022-10-04 | 万向钱潮股份公司 | Clamping device for positioning spatial curved surface |
| CN115519150A (en) * | 2022-11-28 | 2022-12-27 | 广东槊精实业有限公司 | Clamping seat for machining hub bearing |
-
2019
- 2019-05-08 CN CN201920657905.4U patent/CN209986249U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111515726A (en) * | 2020-05-27 | 2020-08-11 | 南京高速齿轮制造有限公司 | Clamping device |
| CN111702197A (en) * | 2020-06-01 | 2020-09-25 | 珠海市润星泰电器有限公司 | Automatic quick-change automatic lathe fixture with automatic positioning function |
| CN111702197B (en) * | 2020-06-01 | 2021-12-24 | 珠海市润星泰电器有限公司 | Automatic quick-change automatic lathe fixture with automatic positioning function |
| CN115139117A (en) * | 2022-09-01 | 2022-10-04 | 万向钱潮股份公司 | Clamping device for positioning spatial curved surface |
| CN115139117B (en) * | 2022-09-01 | 2022-12-06 | 万向钱潮股份公司 | Clamping device for positioning spatial curved surface |
| CN115519150A (en) * | 2022-11-28 | 2022-12-27 | 广东槊精实业有限公司 | Clamping seat for machining hub bearing |
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Denomination of utility model: A lathe three claw fixture mechanism with automatic tension positioning function Effective date of registration: 20210128 Granted publication date: 20200124 Pledgee: China Co. truction Bank Corp Dongguan branch Pledgor: DONGGUAN MODERN METAL PRECISION DIE CASTING Co.,Ltd. Registration number: Y2021980000851 |