CN216227994U - Clamp for finish milling of sealing groove of sealing arc of plug valve - Google Patents
Clamp for finish milling of sealing groove of sealing arc of plug valve Download PDFInfo
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- CN216227994U CN216227994U CN202122779432.5U CN202122779432U CN216227994U CN 216227994 U CN216227994 U CN 216227994U CN 202122779432 U CN202122779432 U CN 202122779432U CN 216227994 U CN216227994 U CN 216227994U
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- pressing plate
- core shaft
- mandrel
- seat
- sealing
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Abstract
The utility model discloses a fixture for finish milling a sealing groove of a sealing arc of a plug valve, which comprises a mandrel, a mandrel seat, a side pressure plate and a chamfer surface pressure plate, wherein the mandrel seat is provided with a plurality of grooves; the core shaft is fixedly connected with the core shaft seat, the side pressing plate is arranged on the surface of the core shaft seat, a horizontal protrusion on one side edge of the side pressing plate and the surface of the core shaft seat form a fixture groove, the chamfer surface pressing plate is arranged on the side surface of the core shaft seat, the chamfer surface of the chamfer surface pressing plate is higher than the top end of the side surface of the core shaft seat, and positioning pins are arranged on two sides of the side pressing plate on the surface of the core shaft seat; the side pressure plate is arranged on the surface of the mandrel base through a fixing piece with a spring. Compared with the prior art, the device disclosed by the utility model can ensure the position relation between the sealing groove and the outer diameter, and simultaneously machine the hole position and the arc sheet width positioning surface, so that the machining process precision is improved on the basis of the traditional clamp, and the deviation of the subsequent fine grinding position is avoided.
Description
Technical Field
The utility model belongs to the technical field of clamps, and particularly relates to a clamp for finish milling a sealing groove of a plug valve sealing arc.
Background
For the finish milling processing of the sealing arc sealing groove of the 3-inch plug valve, the prior art basically processes a sealing ring groove in a four-axis linkage manner, and the coaxiality between the sealing ring groove and the outer diameter is ensured so as to achieve the final use sealing effect; depending on the current process means, the sealing requirements of the sealing groove and the outer diameter can only be guaranteed, the position degree relation between the sealing groove and the hole and between the sealing groove and the positioning surface cannot be completely guaranteed, the position is inconsistent in the assembling process, and the service life of the whole body is influenced.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: aiming at the defects of the prior art, the utility model provides a clamp for finish milling a sealing groove of a plug valve sealing arc.
The technical scheme is as follows: in order to achieve the purpose, the utility model adopts the following technical scheme:
a fixture for finish milling a sealing groove of a sealing arc of a plug valve comprises a mandrel, a mandrel seat, side pressing plates and a chamfer surface pressing plate; the core shaft is fixedly connected with the core shaft seat, the side pressing plate is arranged on the surface of the core shaft seat, a horizontal protrusion on one side edge of the side pressing plate and the surface of the core shaft seat form a fixture groove, the chamfer surface pressing plate is arranged on the side surface of the core shaft seat, the chamfer surface of the chamfer surface pressing plate is higher than the top end of the side surface of the core shaft seat, and positioning pins are arranged on two sides of the side pressing plate on the surface of the core shaft seat; the side pressure plate is arranged on the surface of the mandrel base through a fixing piece with a spring.
As a preferable or improved scheme:
the mandrel is fixedly connected with the mandrel base through two first bolts which are arranged in an up-and-down symmetrical mode.
The chamfer surface pressing plate is arranged on the side surface of the mandrel base through a second bolt.
The clamp also comprises a first stop bolt which penetrates through the chamfer surface pressing plate and is inserted into the side wall of the mandrel seat.
The side pressure plate is arranged on the surface of the mandrel base through a third bolt, a groove is formed in the bottom of the side pressure plate, a spring is placed in the groove, and the third bolt penetrates through the spring.
The clamp further comprises a second stop bolt which penetrates through the side pressure plates and is inserted into the outer wall of the mandrel base.
And the side surface of the mandrel seat is also provided with a fixing groove for fixing and placing the bottom of the chamfer surface pressing plate.
The number of the fixing grooves is 3, and the fixing grooves are uniformly distributed on the same circumferential surface.
Has the advantages that: compared with the prior art, the device disclosed by the utility model can ensure the position relation between the sealing groove and the outer diameter, and simultaneously machine the hole position and the arc sheet width positioning surface, so that the machining process precision is improved on the basis of the traditional clamp, and the deviation of the subsequent fine grinding position is avoided.
Drawings
Fig. 1 is a schematic diagram of the main structure of the device of the present invention.
FIG. 2 is a top view of the apparatus of the present invention.
Fig. 3 is a right side view of the device of the present invention.
Detailed Description
The present invention is further described below with reference to the accompanying drawings, but is not intended to limit the scope of the present invention. Modifications and substitutions to the disclosed structure may be made without departing from the spirit and scope of the utility model.
Example 1
A plug valve sealing arc finish milling sealing groove clamp is shown in figures 1-3 and comprises a mandrel 1, a mandrel seat 2, a side pressing plate 3 and a chamfer surface pressing plate 4; the core shaft 1 is fixedly connected with the core shaft seat 2 through two first bolts 5 which are symmetrically arranged up and down, the side pressure plate 3 is arranged on the surface of the core shaft seat 2, a horizontal protrusion on one side edge of the side pressure plate forms a clamp groove with the surface of the core shaft seat 2, the chamfer surface pressure plate 4 is arranged on the side surface of the core shaft seat 2 through a second bolt 6, the chamfer surface of the chamfer surface pressure plate is higher than the top end of the side surface of the core shaft seat 2, and positioning pins 11 are arranged on two sides of the side pressure plate 3 on the surface of the core shaft seat 2; the side pressure plate 3 is arranged on the surface of the mandrel seat 2 through a fixing piece with a spring.
The clamp also comprises a first stop bolt 7 which penetrates through the chamfered surface pressing plate 4 and is inserted into the side wall of the mandrel seat 2. And a second stop bolt 9 which passes through the side pressure plate 3 and is inserted into the outer wall of the mandrel seat 2.
The side pressure plate 3 is arranged on the surface of the mandrel base 2 through a third bolt 8, a groove is formed in the bottom of the side pressure plate 3, a spring 10 is placed in the groove, and the third bolt 8 penetrates through the spring 10.
The side of the mandrel base 2 is also provided with fixing grooves 12 for fixing the bottom of the chamfer surface pressing plate 4, and the number of the fixing grooves (12) is 3 and the fixing grooves are uniformly distributed on the same circumferential surface.
The use method and the working principle of the utility model are as follows:
the clamp disclosed by the utility model utilizes four-axis machining to finish the finish machining of the sealing groove and the hole, and synchronously finishes the width position control. One end of a machined part 13 is arranged in a fixture groove formed by the horizontal protrusion of one side edge of the side pressing plate 3 and the surface of the mandrel seat 2, the other end of the machined part is in contact with the chamfer surface pressing plate 4 through the chamfer surface and is in contact with the chamfer surface of the machined part for pressing, the third bolt 8 is rotated to enable the side pressing plate 3 to press one end of the machined part 13, and meanwhile, the second bolt 6 is rotated to enable the chamfer surface pressing plate 4 to press the chamfer surface of the other end of the machined part 13. Two positioning pins 11 control the positional relationship of the parts so that the positions of the parts do not deviate. In addition, the first stop bolt 7 and the second stop bolt 9 can limit the vertical running position of the pressing plate, so that the pressing plate is only required to be pressed in the operation process, and the pressing plate does not need to be righted. Because the number of the fixing grooves (12) is 3, 3 workpieces 13 can be placed in the circumferential direction of the mandrel base 2 at the same time during processing, and the efficiency is improved.
The existing milling clamp only controls the position relation of the sealing groove, so that the position relation of the hole and the position relation from the width end face to the center of the hole are difficult to ensure, and the reason is that the arc piece is difficult to assemble and the position is inconsistent after the assembly;
the design of the clamp requires the control precision of the sealing groove, the processing requirements of the hole position and the width end surface are increased, and the traditional clamp cannot synchronously complete the procedures due to the limitation of positioning points. The new clamp completes positioning by means of chamfering surfaces at two ends of the long end, so that secondary finish machining can be performed on the hole and the width surface, and the relation of 3 space dimensions is synchronously ensured.
Although the utility model has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.
Claims (8)
1. The clamp for finish milling the sealing groove of the sealing arc of the plug valve is characterized by comprising a mandrel (1), a mandrel seat (2), a side pressing plate (3) and a chamfer surface side pressing plate (4); the core shaft (1) is fixedly connected with the core shaft seat (2), the side pressing plate (3) is arranged on the surface of the core shaft seat (2), a horizontal protrusion on one side edge of the side pressing plate and the surface of the core shaft seat (2) form a clamp groove, the chamfer surface pressing plate (4) is arranged on the side surface of the core shaft seat (2), the chamfer surface of the chamfer surface pressing plate is higher than the top end of the side surface of the core shaft seat (2), and positioning pins (11) are arranged on two sides of the side pressing plate (3) on the surface of the core shaft seat (2); the side pressure plate (3) is arranged on the surface of the mandrel seat (2) through a fixing piece with a spring.
2. The plug valve sealing arc finish milling sealing groove clamp according to claim 1, wherein the mandrel (1) is fixedly connected with the mandrel seat (2) through two first bolts (5) which are arranged in an up-down symmetrical mode.
3. The plug valve sealing arc finish milling sealing groove clamp according to claim 1, wherein the chamfer surface pressing plate (4) is arranged on the side surface of the mandrel base (2) through a second bolt (6).
4. The plug valve sealing arc finish milling sealing groove clamp according to claim 1, further comprising a first stop bolt (7) which penetrates through the chamfer side pressure plate (4) and is inserted into the side wall of the mandrel seat (2).
5. The plug valve sealing arc finish milling sealing groove clamp according to claim 1, wherein the side pressing plate (3) is arranged on the surface of the mandrel seat (2) through a third bolt (8), a groove is formed in the bottom of the side pressing plate (3), a spring (10) is placed in the groove, and the third bolt (8) penetrates through the spring (10).
6. The plug valve sealing arc finish milling sealing groove clamp according to claim 1, further comprising a second stop bolt (9) which penetrates through the side pressure plate (3) and is inserted into the outer wall of the mandrel seat (2).
7. The plug valve sealing arc finish milling sealing groove clamp according to claim 1, wherein a fixing groove (12) is further formed in the side face of the mandrel seat (2) and used for fixing and placing the bottom of the side plate (4) with the chamfered face.
8. The fixture for finish milling the sealing groove of the sealing arc of the plug valve according to claim 7, wherein the number of the fixing grooves (12) is 3, and the fixing grooves are uniformly distributed on the same circumferential surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122779432.5U CN216227994U (en) | 2021-11-12 | 2021-11-12 | Clamp for finish milling of sealing groove of sealing arc of plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122779432.5U CN216227994U (en) | 2021-11-12 | 2021-11-12 | Clamp for finish milling of sealing groove of sealing arc of plug valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216227994U true CN216227994U (en) | 2022-04-08 |
Family
ID=80940560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122779432.5U Active CN216227994U (en) | 2021-11-12 | 2021-11-12 | Clamp for finish milling of sealing groove of sealing arc of plug valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216227994U (en) |
-
2021
- 2021-11-12 CN CN202122779432.5U patent/CN216227994U/en active Active
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