CN219005303U - Self-centering clamp for center hole - Google Patents
Self-centering clamp for center hole Download PDFInfo
- Publication number
- CN219005303U CN219005303U CN202222747735.3U CN202222747735U CN219005303U CN 219005303 U CN219005303 U CN 219005303U CN 202222747735 U CN202222747735 U CN 202222747735U CN 219005303 U CN219005303 U CN 219005303U
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- sliding sleeve
- guide cone
- sleeve
- steel ball
- fixed
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Abstract
The self-centering clamp for the center hole can automatically position the axle center after clamping a workpiece and form firm contact with the axle center by means of the pushing force exerted by the fixing screw along with the downward sliding of the upper guide cone, a steel ball ring formed by the 8 steel balls and the 8 tension springs simultaneously moves outwards on the conical surfaces of the upper guide cone and the lower guide cone, and the clamp is used for clamping the workpiece with the center hole, can automatically determine the center position after clamping, and can effectively ensure the clamping precision without manual detection and adjustment.
Description
Technical Field
A self-centering clamp for a center hole relates to the technical field of machining, in particular to a center hole clamp for automatic precision machine tool equipment.
Background
At present, a common method for clamping a workpiece with a central hole is to directly place the workpiece on a three-jaw chuck, and the three jaws are used for clamping the inner hole of a cylindrical gear, so that automatic centering cannot be realized, and the repeated positioning accuracy of clamping cannot be ensured.
Disclosure of Invention
The utility model aims to provide a self-centering clamp for a center hole, which is used for loading a workpiece with the center hole, can automatically determine the center position after clamping, effectively ensures the clamping precision, and does not need manual detection and adjustment.
A self-centering fixture for a center hole, comprising: the device comprises a lower guide cone 1, an upper guide cone 2, a fixed screw sleeve 3, an inner slide sleeve 4, an outer slide sleeve 5, an inner steel ball retaining sleeve 6, an outer steel ball retaining sleeve 7, an outer slide sleeve limiter 8, an inner slide sleeve limiter 9, a pressure spring 10, a steel ball 11, a tension spring 12, a workpiece 13 and a fixed screw 14.
A self-centering clamp for a center hole is characterized in that: the lower guide cone is fixed on the fixed screw sleeve, the outer sliding sleeve is fixed on the lower guide cone, the inner sliding sleeve is fixed on the upper guide cone, the inner sliding sleeve is sleeved on the fixed screw sleeve, the inner steel ball retaining sleeve is placed between the inner sliding sleeve and the fixed screw sleeve, the outer steel ball retaining sleeve is placed between the upper guide cone and the outer sliding sleeve, the outer sliding sleeve limiter is fixed on the outer sliding sleeve, the inner sliding sleeve limiter is in threaded connection on the inner sliding sleeve, the pressure spring is placed between the inner sliding sleeve and the lower guide cone, the fixed screw passes through the upper guide cone and is in threaded connection on the fixed screw sleeve, 8 tension springs sequentially pass through the centers of 8 steel balls to form a steel ball ring formed by one steel ball and the tension spring and simultaneously clamped on two conical surfaces of the lower guide cone and the upper guide cone, at the moment, the steel balls are simultaneously tangent with the two conical surfaces of the travel of the lower guide cone and the upper guide cone, and the inner hole of the workpiece is clamped on the outer side of 8 steel balls.
The self-centering clamp for the center hole is characterized in that a steel ball ring consisting of 8 steel balls and 8 tension springs simultaneously moves outwards on the conical surfaces of the upper and lower guide cones along with the downward sliding of the upper guide cone through the thrust exerted by a fixing screw, so that the device can automatically position the axle center after clamping a workpiece and form firm contact with the axle center. The self-centering clamp for the center hole has the advantages that the inner and outer double-layer steel ball retaining sleeve structure is used, so that the upper guide cone can ensure the rectilinear motion precision of the upper guide cone on the axis when the upper guide cone slides up and down, and the clamping precision of a workpiece on a steel ball ring is ensured. The inner sliding sleeve limiter is connected to the inner sliding sleeve through threads, and can limit the sliding distance of the upper guide cone, so that the clamping range of the device can be adjusted. The compression spring is placed between the inner sliding sleeve and the lower guide cone, so that the upper guide cone and the lower guide cone generate pretightening force, and the fixing screw plays a damping role when in tightness.
Drawings
Fig. 1 is a front view in the present embodiment;
fig. 2 is a perspective view of the present embodiment.
Detailed Description
As shown collectively in fig. 1 and 2, a self-centering jig for a center hole comprises: the device comprises a lower guide cone 1, an upper guide cone 2, a fixed screw sleeve 3, an inner slide sleeve 4, an outer slide sleeve 5, an inner steel ball retaining sleeve 6, an outer steel ball retaining sleeve 7, an outer slide sleeve limiter 8, an inner slide sleeve limiter 9, a pressure spring 10, a steel ball 11, a tension spring 12, a workpiece 13 and a fixed screw 14.
A self-centering clamp for a center hole is characterized in that: the lower guide cone 1 is fixed on the fixed screw sleeve 3, the outer sliding sleeve 5 is fixed on the lower guide cone 1, the inner sliding sleeve 4 is fixed on the upper guide cone 2, the inner sliding sleeve 4 is sleeved on the fixed screw sleeve 3, the inner steel ball retaining sleeve 6 is placed between the inner sliding sleeve 4 and the fixed screw sleeve 3, the outer steel ball retaining sleeve 7 is placed between the upper guide cone 2 and the outer sliding sleeve 5, the outer sliding sleeve limiter 8 is fixed on the outer sliding sleeve 5, the inner sliding sleeve limiter 9 is connected on the inner sliding sleeve 4 in a threaded manner, the pressure spring 10 is placed between the inner sliding sleeve 4 and the lower guide cone 1, the fixed screw 14 passes through the upper guide cone 2 to be connected on the fixed screw sleeve 3 in a threaded manner, the centers of the 8 tension springs 12 sequentially pass through the centers of the 8 steel balls 11 to form a steel ball ring formed by the steel balls 11 and the tension springs 12 and simultaneously clamped on the two conical surfaces of the lower guide cone 1 and the upper guide cone 2, at this time, the steel balls 11 are simultaneously tangential to the two conical surfaces of the lower guide cone 1 and the upper guide cone 2, the inner hole of the workpiece 13 is clamped on the outer side of the 8 steel balls.
Claims (1)
1. A self-centering fixture for a center hole, comprising: lower guide cone (1), go up guide cone (2), fixed swivel nut (3), inner sliding sleeve (4), outer sliding sleeve (5), interior steel ball keeps cover (6), outer steel ball keeps cover (7), outer sliding sleeve stopper (8), interior sliding sleeve stopper (9), pressure spring (10), steel ball (11), extension spring (12), work piece (13), set screw (14), its characterized in that: the lower guide cone (1) is fixed on the fixed screw sleeve (3), the outer sliding sleeve (5) is fixed on the lower guide cone (1), the inner sliding sleeve (4) is fixed on the upper guide cone (2), the inner sliding sleeve (4) is sleeved on the fixed screw sleeve (3), the inner steel ball retaining sleeve (6) is placed between the inner sliding sleeve (4) and the fixed screw sleeve (3), the outer steel ball retaining sleeve (7) is placed between the upper guide cone (2) and the outer sliding sleeve (5), the outer sliding sleeve limiter (8) is fixed on the outer sliding sleeve (5), the inner sliding sleeve limiter (9) is connected on the inner sliding sleeve (4) in a threaded mode, the pressure spring (10) is placed between the inner sliding sleeve (4) and the lower guide cone (1), the fixing screw (14) penetrates through the upper guide cone (2) in a threaded mode and is connected on the fixed screw sleeve (3), the centers of the 8 steel balls (11) in sequence, a steel ball ring formed by the steel balls (11) and the steel balls (12) is clamped between the lower guide cone (1) and the upper guide cone (2), and the two steel balls (11) are clamped on the two guide cones (13) simultaneously, and the two guide cones (11) are clamped on the two guide cones are tangential to the two guide cones (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222747735.3U CN219005303U (en) | 2022-10-19 | 2022-10-19 | Self-centering clamp for center hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222747735.3U CN219005303U (en) | 2022-10-19 | 2022-10-19 | Self-centering clamp for center hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219005303U true CN219005303U (en) | 2023-05-12 |
Family
ID=86234465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222747735.3U Active CN219005303U (en) | 2022-10-19 | 2022-10-19 | Self-centering clamp for center hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219005303U (en) |
-
2022
- 2022-10-19 CN CN202222747735.3U patent/CN219005303U/en active Active
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| GR01 | Patent grant |