CN215588543U - High-pressure ball valve shaft semicircular groove machining clamp - Google Patents
High-pressure ball valve shaft semicircular groove machining clamp Download PDFInfo
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- CN215588543U CN215588543U CN202122263666.4U CN202122263666U CN215588543U CN 215588543 U CN215588543 U CN 215588543U CN 202122263666 U CN202122263666 U CN 202122263666U CN 215588543 U CN215588543 U CN 215588543U
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Abstract
The utility model relates to a high-pressure ball valve shaft semicircular groove machining clamp which comprises a shaft, wherein the section of one end of the shaft is a first end with a square shape, and the other end of the shaft is a second end provided with four semicircular grooves along the axis direction of the shaft; the middle part of the positioning body is provided with a positioning hole for the first end to insert, one side of the positioning body is milled to form an alignment surface, and the alignment surface is parallel to one plane of the first end; the three-jaw chuck is fixed on the positioning body, and the middle part of the three-jaw chuck is used for the shaft to pass through; and the three-jaw chuck is movably arranged on the three-jaw chuck and is suitable for clamping the shaft. The workbench is positioned below the positioning body and is detachably and fixedly connected with the positioning body; one end of the shaft is inserted into the positioning hole, the shaft and the positioning body are fixed by the three claws, the alignment surface is parallel to one end surface of the first end, and when the alignment surface is in a horizontal or vertical state, the accurate positioning of the second end can be realized, and the positioning and clamping of the shaft are realized.
Description
Technical Field
The utility model relates to a clamp, in particular to a high-pressure ball valve shaft semicircular groove machining clamp.
Background
As shown in figure 1, the high-pressure ball valve is a ball valve with the pressure grade not less than that of Class600/PN100, and the high-pressure ball valve is used under the high-pressure working condition, the transmission torque of a shaft is larger, so that the section of one end of the shaft is square, the torque is transmitted to an actuating mechanism, the other end of the shaft is provided with four semicircular grooves, and four cylindrical pins are used for transmitting the torque to a ball core to ensure that the ball valve completes opening and closing actions.
The machining precision of the semicircular grooves of the shaft has an important influence on the quality of the ball valve, and firstly, the position precision of the four semicircular grooves relative to the center of the shaft and the position precision among the four semicircular grooves influence the assembly and the service life of the ball valve; and secondly, the position precision of the four semicircular grooves relative to the four directions of the other end influences the opening and closing position of the ball valve.
In conclusion, how to realize the positioning and clamping of the shaft, the semicircular groove is conveniently processed into a problem which needs to be solved urgently by researchers of the company.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: how to achieve the positioning and clamping of the shaft;
in order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model relates to a high-pressure ball valve shaft semicircular groove machining clamp which comprises a shaft, wherein the section of one end of the shaft is a first end with a square shape, and the other end of the shaft is a second end provided with four semicircular grooves along the axis direction of the shaft; the middle part of the positioning body is provided with a positioning hole for the first end to insert, one side of the positioning body is milled to form an alignment surface, and the alignment surface is parallel to one plane of the first end; the three-jaw chuck is fixed on the positioning body, and the middle part of the three-jaw chuck is used for the shaft to pass through; and the three-jaw chuck is movably arranged on the three-jaw chuck and is suitable for clamping the shaft. The workbench is positioned below the positioning body and is detachably and fixedly connected with the positioning body;
in the scheme, the workbench, the positioning body and the three-jaw chuck are fixedly connected in sequence, the shaft passes through the positioning body, the first end of the shaft is inserted into the workbench of the positioning body, and the three jaws clamp the shaft tightly; the alignment face parallel to one end face of the first end is formed in the milling position, so that the accurate positioning of the second end can be realized when the alignment face is in a horizontal or vertical state in actual operation, and the milling cutter can mill a semicircular groove conveniently.
How to realize the connection of the three-jaw chuck and the positioning body, the utility model adopts the upper end surface of the positioning body to be circumferentially provided with a plurality of threaded holes; the screw penetrates through the threaded hole, and the tail end of the screw is fixed with the bottom of the three-jaw chuck;
the utility model relates to a positioning device for a three-jaw chuck, which aims to realize accurate positioning of the three-jaw chuck and a positioning body.
How to realize the connection of the workbench and the positioning body, the utility model adopts the connection of the workbench and the positioning body through the pressing plate; the pressing plate is provided with a through hole for the three-jaw to pass through, the pressing plate is fixed on the workbench through a T-shaped screw, and the lower end face of the horizontal section of the pressing plate is pressed against the upper end face of the three-jaw chuck.
The utility model has the beneficial effects that: the utility model relates to a high-pressure ball valve shaft semicircular groove machining clamp, which is characterized in that one end of a shaft is inserted into a positioning hole, the shaft and a positioning body are fixed by three claws, an alignment surface is parallel to one end surface of a first end, and when the alignment surface is in a horizontal or vertical state, the accurate positioning of a second end can be realized, and the positioning and clamping of the shaft are realized.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of the construction of the shaft of the present invention and a cross-sectional view of the first and second ends;
FIG. 2 is a top view of the positioning body of the present invention;
FIG. 3 is a cross-sectional view of the positioning body of the present invention;
FIG. 4 is a schematic structural view of the present invention;
FIG. 5 is a schematic view of the overall assembly structure of the present invention;
in the figure: 1-shaft, 2-first end, 3-semicircular groove, 4-second end, 5-positioning body, 6-positioning hole, 7-alignment face, 8-three-jaw chuck, 9-three-jaw, 10-workbench, 11-threaded hole, 12-screw, 13-bulge, 14-pressing plate, 15-through hole and 16-T-shaped screw.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1-4, the utility model relates to a high-pressure ball valve shaft semicircular groove processing clamp, which comprises a shaft 1, wherein the section of one end of the shaft is a first end 2 with a square shape, and the other end of the shaft is a second end 4 which is provided with four semicircular grooves 3 along the axial direction; a positioning hole 6 for inserting the first end 2 is formed in the middle of the positioning body 5, an alignment surface 7 is arranged at the milled position of one side of the positioning body, and the alignment surface 7 is parallel to one plane of the first end 2; a three-jaw chuck 8 fixed on the positioning body, wherein the middle part of the three-jaw chuck is used for the shaft 1 to pass through; the three-jaw chuck 8 is movably arranged on the shaft 1 and is suitable for clamping the shaft; the workbench 10 is positioned below the positioning body 5 and is detachably and fixedly connected with the positioning body 5;
in the scheme, the workbench, the positioning body and the three-jaw chuck are fixedly connected in sequence, the shaft passes through the positioning body, the first end of the shaft is inserted into the workbench of the positioning body, and the three jaws clamp the shaft tightly; the alignment face parallel to one end face of the first end is formed in the milling position, so that the accurate positioning of the second end can be realized when the alignment face is in a horizontal or vertical state in actual operation, and the milling cutter can mill a semicircular groove conveniently.
As shown in fig. 4, how to connect the three-jaw chuck with the positioning body, the utility model adopts the positioning body 5 with a plurality of threaded holes 11 arranged on the circumference of the upper end surface; the screw 12 passes through the threaded hole 11, and the tail end of the screw is fixed with the bottom of the three-jaw chuck 8;
as shown in fig. 3, how to accurately position the three-jaw chuck and the positioning body, the top surface of the positioning body 5 is provided with a protrusion 13, and the bottom surface of the three-jaw chuck is provided with a groove matched with the protrusion.
As shown in fig. 5, how to connect the workbench and the positioning body, the workbench 10 and the positioning body 5 are connected by a pressing plate 14; the pressure plate 14 is provided with a through hole 15 for the three-jaw to pass through, the pressure plate 14 is fixed on the workbench 10 through a T-shaped screw 16, and the lower end surface of the horizontal section of the pressure plate 14 is pressed against the upper end surface of the three-jaw chuck 8.
The utility model relates to a high-pressure ball valve shaft semicircular groove machining clamp, which is characterized in that one end of a shaft is inserted into a positioning hole, the shaft and a positioning body are fixed by three claws, an alignment surface is parallel to one end surface of a first end, and when the alignment surface is in a horizontal or vertical state, the accurate positioning of a second end can be realized, and the positioning and clamping of the shaft are realized.
As shown in fig. 1-5, the semi-circular groove of the high-pressure ball valve shaft is machined on a vertical machining center, and during field work, an alignment surface 7 of an alignment device is parallel to the X axis of a machine tool, and a pressure plate 14 compresses the technical equipment. The shaft 1 is placed into a positioning hole 6 of the process equipment, the three claws 9 clamp the upper end of the shaft 1, the phi Af9 excircle of the shaft 1 is aligned, and the vertical machining center is provided with a phi 2b milling cutter (the radius of the semicircular groove is RbH9), so that four semicircular grooves 3 can be machined smoothly. Due to the positioning of the lower positioning hole 6 and the alignment of the phi A f9 excircle of the shaft 1, the position accuracy of the four semicircular grooves relative to the square excircle and the shaft excircle meets the requirements of a drawing, and the position accuracy among the four semicircular grooves 3 is also ensured by the processing accuracy of the vertical processing center.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (4)
1. High-pressure ball valve shaft half slot adds clamping apparatus, its characterized in that: comprises that
The cross section of one end of the shaft is a first end with a square shape, and the other end of the shaft is a second end provided with four semicircular grooves along the axis direction;
the middle part of the positioning body is provided with a positioning hole for the first end to insert, a milling part on one side of the positioning body is provided with an alignment surface, and the alignment surface is parallel to one plane of the first end;
the three-jaw chuck is fixed on the positioning body, and the middle part of the three-jaw chuck is used for the shaft to pass through;
the three-jaw chuck is movably arranged on the shaft and is suitable for clamping the shaft;
and the workbench is positioned below the positioning body and is detachably and fixedly connected with the positioning body.
2. The clamp for processing the semicircular groove of the high-pressure ball valve shaft according to claim 1, wherein: a plurality of threaded holes are circumferentially arranged on the upper end surface of the positioning body;
and a screw passes through the threaded hole, and the tail end of the screw is fixed with the bottom of the three-jaw chuck.
3. The high-pressure ball valve shaft semicircular groove machining clamp as claimed in claim 2, wherein: the top surface of the positioning body is provided with a bulge, and the bottom surface of the three-jaw chuck is provided with a groove matched with the bulge.
4. The clamp for processing the semicircular groove of the high-pressure ball valve shaft according to claim 1, wherein: the workbench is connected with the positioning body through a pressing plate;
the pressing plate is provided with a through hole for the three-jaw to pass through, the pressing plate is fixed on the workbench through a T-shaped screw, and the lower end face of the horizontal section of the pressing plate is pressed against the upper end face of the three-jaw chuck.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022347486X | 2020-10-09 | ||
| CN202022347486 | 2020-10-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215588543U true CN215588543U (en) | 2022-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122263666.4U Active CN215588543U (en) | 2020-10-09 | 2021-09-17 | High-pressure ball valve shaft semicircular groove machining clamp |
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| Country | Link |
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| CN (1) | CN215588543U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113655000A (en) * | 2021-08-02 | 2021-11-16 | 贵州航天风华精密设备有限公司 | Preparation method and clamping structure of alloy chemical composition spectrum detection test piece |
-
2021
- 2021-09-17 CN CN202122263666.4U patent/CN215588543U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113655000A (en) * | 2021-08-02 | 2021-11-16 | 贵州航天风华精密设备有限公司 | Preparation method and clamping structure of alloy chemical composition spectrum detection test piece |
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