CN221270398U - Annular thin shell workpiece clamping fixture - Google Patents
Annular thin shell workpiece clamping fixture Download PDFInfo
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- CN221270398U CN221270398U CN202323083864.8U CN202323083864U CN221270398U CN 221270398 U CN221270398 U CN 221270398U CN 202323083864 U CN202323083864 U CN 202323083864U CN 221270398 U CN221270398 U CN 221270398U
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- guide hole
- annular thin
- centering
- clamping fixture
- shell workpiece
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Abstract
The utility model provides an annular thin-shell workpiece clamping fixture which comprises a base, a centering disc, a push rod and a positioning pin, wherein a horizontal guide hole and a vertical guide hole are formed in the base, the horizontal guide hole and the vertical guide hole are vertically intersected and are mutually communicated, the lower end of the positioning pin is fixedly connected to the edge of the centering disc, the upper end of the positioning pin extends upwards along the vertical direction, a centering column is further arranged on the surface of the centering disc, the centering column is sleeved in the vertical guide hole, one end of the push rod is provided with an inclined wedge surface, the push rod is sleeved in the horizontal guide hole, and the inclined wedge surface is close to the centering column. By adopting the technical scheme of the utility model, when the push rod is applied with force, the centering column ascends along the inclined wedge surface, so that the corresponding positioning pins can simultaneously extend into the corresponding positioning holes on the surface of the workpiece, thereby realizing synchronous positioning of all points of the workpiece, reducing the shape and position errors among the positioning pins, and eliminating assembly operation errors caused by clamping the workpiece point by point as much as possible.
Description
Technical Field
The utility model belongs to the technical field of cutting processing clamps, and particularly relates to an annular thin-shell workpiece clamping clamp.
Background
The annular thin-shell part is a part widely applied to various mechanical equipment or devices, when the outline of the workpiece is cut, in order to prevent the workpiece from deforming in the machining process, a closed annular pressing plate is generally used for pressing and clamping the workpiece, the clamping mode has higher requirements on the flatness and the planeness of the surface of the pressing plate, the machining difficulty is higher, the shape and the size of the pressing plate are gradually increased along with the increase of the outline of the workpiece, the material required by the clamp is correspondingly increased, the manufacturing cost of the clamp is increased, the machining precision of the pressing plate is not easy to ensure, the clamping error of the workpiece is easily increased, and the cutting machining precision of the workpiece is influenced.
In the prior art, the publication number is: the patent literature of CN107263176A discloses a clamp and a processing method of an L-shaped thin-wall annular part, wherein the clamp comprises a clamp body, a positioning sleeve, a pressing plate A, a pressing plate B and a pressing sleeve, the positioning sleeve is connected with the center of the clamp body, the positioning sleeve is connected with a machine tool spindle, the lower end face of the L-shaped thin-wall annular part is flush with the end face of the clamp body, the pressing plate A and the pressing plate B are respectively positioned with the end face of the clamp body by using pins, the pressing plate A and the pressing plate B are respectively connected with the clamp body by using bolts, the pressing plate A flattens the upper end face of the L-shaped thin-wall annular part, and the pressing plate B flattens the pressing sleeve on the step face of the L-shaped thin-wall annular part; according to the technical scheme, one set of clamp and two sets of pressing plates are used for clamping workpieces in sequence, the time for machining procedures and transferring the workpieces is reduced, the workpieces are clamped and aligned quickly, the rigidity of the workpieces is improved, the wall thickness of the workpieces is machined more uniformly, however, when the thin shell workpieces are clamped by the existing clamp, the annular thin shell workpieces are clamped or tightly pressed at a plurality of positions around by bolts generally, so that the clamping positions can keep uniform references as much as possible, however, due to gaps between screw holes and bolts, deviation still exists among clamping holes, when the annular thin shell workpieces are clamped, the workpieces can only be clamped one by one along the circumferential edges of the annular thin shell workpieces, the clamping time of each corresponding point on the workpieces is different, the fastening force applied to the bolts is also different when workers clamp the workpieces, and larger shape and position errors can be caused among the corresponding points.
Disclosure of utility model
In order to solve the technical problems, the utility model provides an annular thin-shell workpiece clamping fixture.
The utility model is realized by the following technical scheme.
The utility model provides an annular thin-shell workpiece clamping fixture which comprises a base, a centering disc, a push rod and a positioning pin, wherein a horizontal guide hole and a vertical guide hole are formed in the base, the horizontal guide hole and the vertical guide hole are vertically intersected and are mutually communicated, the lower end of the positioning pin is fixedly connected to the edge of the centering disc, the upper end of the positioning pin extends upwards along the vertical direction, a centering column is further arranged on the surface of the centering disc, the centering column is sleeved in the vertical guide hole, one end of the push rod is provided with an inclined wedge surface, the push rod is sleeved in the horizontal guide hole, and the inclined wedge surface is close to the centering column.
The inclined wedge surface has an inclination angle of 15 DEG to 30 DEG relative to the horizontal plane.
The surface of base is equipped with the location boss, horizontal guide hole, vertical guide hole all set up in the location boss.
The base is also fixedly connected with the supporting plate, and the surface of the supporting plate is provided with a limiting sink groove, and the shape and the size of the limiting sink groove are consistent with those of the annular thin-shell workpiece.
The notch edge of the limiting sink groove is also provided with a plurality of scale marks, and the included angle between two adjacent scale marks is 1 degree.
The base and the supporting plate are fixedly connected together through a plurality of upright posts.
The annular thin-shell workpiece clamping fixture further comprises a connecting rod, one end of the connecting rod is hinged with the centering column, and the other end of the connecting rod is hinged with the push rod.
The lower end face of the centering column is hemispherical.
The cross section of the push rod is rectangular.
The upper end of the locating pin is also provided with external threads.
The utility model has the beneficial effects that: according to the technical scheme, the annular thin-shell workpiece is positioned through the positioning pins, so that the gap between the screw holes and the bolts is eliminated, then the acting force is applied to the push rod, the centering columns ascend upwards along the inclined wedge, and then the corresponding positioning pins can extend into the corresponding positioning holes on the surface of the annular thin-shell workpiece at the same time, so that the operation time for positioning all points on the workpiece is kept consistent.
Drawings
Fig. 1 is a front view of the present utility model.
In the figure: the device comprises a base, a centering disc, a push rod, a locating pin, a centering column, a wedge surface, a locating boss, a supporting plate, a limiting sinking groove, a thin annular shell workpiece, a vertical column and a connecting rod, wherein the base is a 1-base, the centering disc is a 2-centering disc, the push rod is a 3-push rod, the locating pin is a 4-locating pin, the centering column is a 5-wedge surface, the locating boss is a 7-locating boss, the supporting plate is a 8-supporting plate, the limiting sinking groove is a 9-limiting sinking groove, the thin annular shell workpiece is a 10-annular shell workpiece, and the connecting rod is a 11-vertical column and a 12-connecting rod.
Detailed Description
The technical solution of the present utility model is further described below, but the scope of the claimed utility model is not limited to the above.
As shown in fig. 1, the utility model provides an annular thin-shell workpiece clamping fixture, which comprises a base 1, a centering disc 2, a push rod 3 and a positioning pin 4, wherein a horizontal guide hole and a vertical guide hole are arranged in the base 1, the horizontal guide hole and the vertical guide hole are vertically intersected and are mutually communicated, the lower end of the positioning pin 4 is fixedly connected to the edge of the centering disc 2, the upper end of the positioning pin 4 extends upwards along the vertical direction, a centering column 5 is further arranged on the surface of the centering disc 2, the centering column 5 is sleeved in the vertical guide hole, one end of the push rod 3 is provided with a wedge surface 6, the push rod 3 is sleeved in the horizontal guide hole, and the wedge surface 6 is close to the centering column 5.
According to the technical scheme, the annular thin-shell workpiece is positioned through the positioning pins, so that the gap between the screw holes and the bolts is eliminated, then the acting force is applied to the push rod, the centering columns ascend upwards along the inclined wedge, and then the corresponding positioning pins can extend into the corresponding positioning holes on the surface of the annular thin-shell workpiece at the same time, so that the operation time for positioning all points on the workpiece is kept consistent.
In particular, the angle of inclination of the cam surface 6 with respect to the horizontal is 15 ° to 30 °. The surface of the base 1 is provided with a positioning boss 7, and the horizontal guide hole and the vertical guide hole are both arranged in the positioning boss 7. The base 1 is also fixedly connected with the supporting plate 8, a limiting sink groove 9 is arranged on the surface of the supporting plate 8, and the shape and the size of the limiting sink groove 9 are consistent with those of the annular thin-shell workpiece 10. The outer contour of the annular thin-shell workpiece is preliminarily positioned through the limiting countersink 9, and then a plurality of positioning holes on the inner peripheral surface of the annular thin-shell workpiece are simultaneously positioned through a plurality of positioning pins at one time.
Further, a plurality of scale marks are further arranged at the edge of the notch of the limiting sink 9, and the included angle between two adjacent scale marks is 1 degree. When the workpiece is cut, a datum line can be drawn on the surface of the workpiece, and when the outline of the annular thin-shell workpiece is positioned through the limiting countersink 9, the datum line is aligned with a zero scale mark, at the moment, corresponding shape elements are cut on the surface of the workpiece, when the workpiece needs to be rotated, the datum line on the surface of the workpiece is aligned with the corresponding scale mark, so that the workpiece is controlled to rotate by a precise angle, cutting of other shape elements on the surface of the workpiece is facilitated, and a foundation is laid for improving the machining precision of the shape elements.
In addition, the base 1 and the supporting plate 8 are fixedly connected together through a plurality of upright posts 11. The annular thin-shell workpiece clamping fixture further comprises a connecting rod 12, one end of the connecting rod 12 is hinged with the centering column 5, and the other end of the connecting rod 12 is hinged with the push rod 3. The lower end face of the centering column 5 is hemispherical. The cross section of the centering post 5 is rectangular. The cross section of the push rod 3 is rectangular. Therefore, when acting force is applied to the push rod 3, the push rod 3 or the centering column 5 rotates, the positioning precision of the workpiece is further improved, external threads are further arranged at the upper end of the positioning pin 4, after the positioning pins respectively position the annular thin-shell workpiece, the positioning pin 4 can be connected with the nut, so that the annular thin-shell workpiece is pressed, and in the operation process, as the corresponding positions of the workpiece are completely determined by the positioning pin 4, the processing precision of the workpiece is ensured.
Claims (10)
1. An annular thin shell work piece clamping anchor clamps, its characterized in that: including base (1), centering dish (2), push rod (3) and locating pin (4), be equipped with horizontal guide hole and vertical guide hole in base (1), horizontal guide hole and vertical guide hole intersect perpendicularly and communicate each other, the lower extreme of locating pin (4) link firmly in the border department of centering dish (2), the upper end of locating pin (4) upwards extends along vertical direction, the surface of centering dish (2) still is equipped with centering post (5), centering post (5) suit is in vertical guide hole, the one end of push rod (3) sets up to slide wedge face (6), push rod (3) suit is in horizontal guide hole, and makes slide wedge face (6) with centering post (5) are close.
2. The annular thin-shell workpiece clamping fixture as claimed in claim 1, wherein: the inclined wedge surface (6) has an inclination angle of 15-30 degrees relative to the horizontal plane.
3. The annular thin-shell workpiece clamping fixture as claimed in claim 1, wherein: the surface of base (1) is equipped with location boss (7), horizontal guide hole, vertical guide hole all set up in location boss (7).
4. An annular thin-shell workpiece clamping fixture as claimed in claim 1 or claim 3, wherein: the base (1) is fixedly connected with the supporting plate (8), a limiting sinking groove (9) is formed in the surface of the supporting plate (8), and the shape and the size of the limiting sinking groove (9) are consistent with those of the annular thin-shell workpiece (10).
5. The annular thin-shell workpiece clamping fixture as claimed in claim 4, wherein: the notch edge of the limiting sink groove (9) is also provided with a plurality of scale marks, and the included angle between two adjacent scale marks is 1 degree.
6. The annular thin-shell workpiece clamping fixture as claimed in claim 4, wherein: the base (1) and the supporting plate (8) are fixedly connected together through a plurality of upright posts (11).
7. The annular thin-shell workpiece clamping fixture as claimed in claim 1, wherein: the annular thin-shell workpiece clamping fixture further comprises a connecting rod (12), one end of the connecting rod (12) is hinged with the centering column (5), and the other end of the connecting rod (12) is hinged with the push rod (3).
8. The annular thin-shell workpiece clamping fixture of claim 7, wherein: the lower end face of the centering column (5) is hemispherical.
9. The annular thin-shell workpiece clamping fixture as claimed in claim 1 or 7, wherein: the cross section of the push rod (3) is rectangular.
10. The annular thin-shell workpiece clamping fixture as claimed in claim 1, wherein: the upper end of the locating pin (4) is also provided with external threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323083864.8U CN221270398U (en) | 2023-11-15 | 2023-11-15 | Annular thin shell workpiece clamping fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323083864.8U CN221270398U (en) | 2023-11-15 | 2023-11-15 | Annular thin shell workpiece clamping fixture |
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| Publication Number | Publication Date |
|---|---|
| CN221270398U true CN221270398U (en) | 2024-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323083864.8U Active CN221270398U (en) | 2023-11-15 | 2023-11-15 | Annular thin shell workpiece clamping fixture |
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| Country | Link |
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| CN (1) | CN221270398U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117415645A (en) * | 2023-11-15 | 2024-01-19 | 贵州黎阳国际制造有限公司 | A thin-walled sleeve synchronous positioning fixture |
-
2023
- 2023-11-15 CN CN202323083864.8U patent/CN221270398U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117415645A (en) * | 2023-11-15 | 2024-01-19 | 贵州黎阳国际制造有限公司 | A thin-walled sleeve synchronous positioning fixture |
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