CN212761173U - Floating three-jaw chuck - Google Patents
Floating three-jaw chuck Download PDFInfo
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- CN212761173U CN212761173U CN202020631265.2U CN202020631265U CN212761173U CN 212761173 U CN212761173 U CN 212761173U CN 202020631265 U CN202020631265 U CN 202020631265U CN 212761173 U CN212761173 U CN 212761173U
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- claw
- floating
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- chuck
- jaw
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Abstract
The utility model provides a floating three-jaw chuck, include: the flexible claw is fixed with the floating claw through a rotary positioning pin, and products are arranged on the upper surface of the flexible claw and the inner side of the floating claw. The utility model provides a pair of three-jaw chuck floats can press from both sides tight product, makes the product be difficult for droing in the course of working, is equipped with the floating claw of floating about can controlling 2 on every soft claw, thereby the floating claw can laminate the product face more and improve the machining precision.
Description
Technical Field
The utility model relates to a machine-building production field especially relates to a floating three-jaw chuck.
Background
Chucks are mechanical devices used to clamp workpieces on machine tools. The machine tool accessory clamps and positions a workpiece by utilizing the radial movement of movable clamping jaws uniformly distributed on a chuck body. The chuck generally comprises a chuck body, movable jaws and a jaw driving mechanism 3. The diameter of the chuck body is 65 mm at least and can reach 1500 mm at most, and a through hole is formed in the center of the chuck body so as to facilitate the workpiece or bar stock to pass through; the back part is provided with a cylindrical or short conical structure and is connected with the end part of a main shaft of the machine tool directly or through a flange plate. Chucks are commonly used in lathes, cylindrical grinders and internal grinders, and may also be used in conjunction with various indexing devices for milling and drilling machines. The chuck jaws can be divided into: two-jaw chucks, three-jaw chucks, four-jaw chucks, six-jaw chucks and special chucks.
When turning large-batch workpieces, in order to improve the positioning precision of the workpieces during processing and save the auxiliary time of workpiece installation, a three-jaw soft jaw chuck can be used. In order to change the diameter and the shape of the arc of the jaw face at any time according to actual needs, the jaws quenched by the three-jaw chuck are changed into low-carbon steel, copper or aluminum alloy jaws. If the chuck jaw is two-body, the jaw part can be changed into soft metal; if the claw is integrated, a soft metal block can be fixed on the claw. After the jaws of the soft jaw chuck are machined, the positioning precision of a workpiece can be improved, and if the soft jaw chuck is a new three-jaw chuck, the positioning precision of the workpiece after installation is less than 0.01 mm. If the plane thread of the three-jaw chuck is seriously worn and has poor precision, the positioning precision of the installed workpiece can still be kept within 0.05mm after the soft jaw is replaced for light processing. The soft jaw chuck clamps the machined surface or soft metal, so that the surface is not easy to be damaged. For thin-wall workpieces, fan-shaped claws can be used for increasing the contact area with the workpiece and reducing the deformation of the workpiece. The soft jaw chuck is suitable for the machined surface as a positioning precision reference, and semi-precision turning and precision turning of workpieces are carried out during mass production. The accurate adjustment and turning of the soft jaw chuck are the primary conditions for ensuring the accuracy of the soft jaw chuck. The bottom surface of the soft claw and the positioning table are matched with the claw base in a sliding way and positioned correctly. The part of the soft claw used for clamping the workpiece is lengthened by 10-15 mm compared with the hard claw for multiple turning and is required to be assembled in a number matching manner; the diameter of the turning soft claw is consistent with that of a workpiece to be clamped, and the clamping precision can not be ensured if the diameter is larger or smaller. The turning diameter of a common claw is about 0.2mm larger than the diameter of a workpiece, namely the diameter of the workpiece to be clamped is controlled within a certain tolerance range; when the soft claw is turned, in order to eliminate the clearance, a cylinder or a circular ring with proper diameter must be arranged in or outside the claw, and the position of the cylinder or the circular ring at the installation position of the soft claw is consistent with the clamping direction of the workpiece, otherwise, the positioning precision of the workpiece cannot be ensured. When the workpiece is clamped, the cylinder is clamped in the chuck jaw to machine the soft jaw surface, and when the workpiece is tensioned, the circular ring is arranged outside the chuck jaw to machine the soft jaw surface.
With the development of equipment, a customer has higher requirement on the precision of a product, but a three-jaw soft jaw chuck in the prior art often easily causes product deformation in the die-casting process, and because the product is thin in thickness, irregular in clamping surface and short in clamping surface, a common soft jaw easily causes the product to fall off during clamping to cause damage to a cutter and a machine tool, and the flatness cannot meet the requirement easily due to the unstable size or the cutter vibration phenomenon in machining.
Therefore, the prior art has yet to be developed.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a floating three-jaw chuck, which is used for solving the problems existing in the prior art and has certain beneficial effects.
To achieve the above and other related objects, the present invention provides a floating three-jaw chuck, including: chuck, soft claw and unsteady claw, be equipped with soft claw on the chuck, the one end that the claw of floating is close to the chuck center is equipped with sunkenly, the claw of floating inlays inside the recess of soft claw through the rotational positioning round pin, soft claw upper surface and unsteady claw inboard are equipped with the product.
In an embodiment of the present invention, a groove is formed in the soft claw at a position away from the center of the chuck, and the bottom end of the floating claw is arranged in the corresponding position of the groove to form an inward recessed pi-shaped shape.
In an embodiment of the present invention, the size of the soft claw groove is larger than the size of the floating claw.
In an embodiment of the present invention, the number of the soft claws is 3, and the soft claws are equidistantly distributed on the upper surface of the chuck.
In an embodiment of the present invention, the floating claws are provided with 3 claws, and are fixed on the outer edges of the upper surfaces of the 3 soft claws respectively.
In an embodiment of the present invention, the floating claws are fixed on the upper surface of the soft claws in an embedded manner.
In an embodiment of the present invention, the floating claws have a length of 85 mm.
As described above, the utility model discloses a three-jaw chuck floats has following beneficial effect: the utility model provides a pair of three-jaw chuck floats can press from both sides tight product, makes the product be difficult for droing in the course of working, is equipped with the floating claw of floating about can controlling 2 on every soft claw, thereby the floating claw can laminate the product face more and improve the machining precision. The utility model discloses a three-jaw chuck machining precision that floats is high, and the product is difficult for droing in the course of working, and size precision is stable.
Drawings
Fig. 1 is a schematic side view of a floating three-jaw chuck according to an embodiment of the present invention.
Fig. 2 is a schematic top view of a floating three-jaw chuck according to an embodiment of the present invention.
Fig. 3 is a perspective view of a floating three-jaw chuck disclosed in an embodiment of the present invention without the chuck.
Description of the element reference numerals
1 chuck
2 Soft claw
3 rotating positioning pin
4 floating claw
5 products of
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1 to 3. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
Referring to fig. 1 to 3, the present invention provides a floating three-jaw chuck, including: chuck 1, soft claw 2 and unsteady claw 4, be equipped with soft claw 2 on the chuck 1, the one end that the unsteady claw 4 is close to the chuck center is inwards sunken, forms and treats the surface that the centre gripping product laminated mutually for place product 5, unsteady claw 4 inlays inside the recess of soft claw 2 through rotational positioning round pin 3, soft claw 2 upper surface and unsteady claw 4 inboard are equipped with product 5.
Specifically, a groove is formed in the position, far away from the center of the chuck 1, of the soft claw 2, and the bottom end of the floating claw 4 is arranged in a shape of an inwards-recessed pi in the corresponding position of the groove. The Pi-shaped concave part of the floating claw 4 is correspondingly embedded with the groove part of the soft claw 2.
Specifically, the size of the groove of the soft claw 2 is larger than that of the floating claw 4.
Specifically, the number of the soft claws 2 is 3, and the soft claws are distributed on the upper surface of the chuck 1 at equal intervals.
Specifically, 3 floating claws 4 are arranged and are respectively fixed on the outer edges of the upper surfaces of the 3 soft claws 2.
Specifically, the floating claws 4 are fixed on the upper surface of the soft claw 2 in an embedded mode.
Specifically, the length of the floating claw 4 is 85 mm.
When the device is used, the chuck 1 is installed on a lathe, the soft claw 2 is fixed on the chuck 1 through a screw, then the rotary positioning pin 3 and the floating claw 4 are installed on the soft claw 2, finally, a product is installed, and the device starts to operate.
By adopting the technical scheme, the position of the floating claw 4 can be adjusted within the range of about 2 degrees.
To sum up, the utility model provides a pair of three-jaw chuck floats can press from both sides tight product, makes the product be difficult for droing in the course of working, is equipped with about can controlling the unsteady claw about 2 on every soft claw, thereby the unsteady claw can laminate the product face more and improve the machining precision, the utility model discloses a three-jaw chuck machining precision that floats is high, and the product is difficult for droing in the course of working, and size precision is stable.
Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. A floating three-jaw chuck comprising: chuck (1), soft claw (2) and floating claw (4), its characterized in that, be equipped with soft claw (2) on chuck (1), the one end that floating claw (4) are close to the chuck center is inside sunken, floating claw (4) are inlayed inside the recess of soft claw (2) through rotation locating pin (3), soft claw (2) upper surface and floating claw (4) inboard are equipped with product (5).
2. The floating three-jaw chuck according to claim 1, wherein: the soft claw (2) is provided with a groove far away from the center of the chuck (1), and the bottom end of the floating claw (4) is arranged in a concave pi shape at the corresponding position of the groove.
3. The floating three-jaw chuck according to claim 1, wherein: the size of the groove of the soft claw (2) is larger than that of the floating claw (4).
4. The floating three-jaw chuck according to claim 1, wherein: the number of the soft claws (2) is 3, and the soft claws are distributed on the upper surface of the chuck (1) at equal intervals.
5. The floating three-jaw chuck according to claim 2, wherein: the number of the floating claws (4) is 3, and the floating claws are respectively fixed on the outer edges of the upper surfaces of the 3 soft claws (2).
6. The floating three-jaw chuck according to claim 1, wherein: the floating claws (4) are fixed on the upper surface of the soft claw (2) in an embedded mode.
7. The floating three-jaw chuck according to claim 1, wherein: the length of the floating claw (4) is 85 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020631265.2U CN212761173U (en) | 2020-04-23 | 2020-04-23 | Floating three-jaw chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020631265.2U CN212761173U (en) | 2020-04-23 | 2020-04-23 | Floating three-jaw chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212761173U true CN212761173U (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020631265.2U Active CN212761173U (en) | 2020-04-23 | 2020-04-23 | Floating three-jaw chuck |
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| CN (1) | CN212761173U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113084270A (en) * | 2021-03-31 | 2021-07-09 | 徐州徐工传动科技有限公司 | Thin-wall gear ring machining clamp mechanism |
-
2020
- 2020-04-23 CN CN202020631265.2U patent/CN212761173U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113084270A (en) * | 2021-03-31 | 2021-07-09 | 徐州徐工传动科技有限公司 | Thin-wall gear ring machining clamp mechanism |
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