CN204449915U - A kind of frock clamp for processing gate valve sealing surface - Google Patents

Abstract

The utility model provides a kind of frock clamp for processing gate valve sealing surface, and it matches with valve body, comprises subbase, gradient circle ring disk, rotating disc and positioning disk; Wherein, gradient circle ring disk is fixed on subbase, is formed with one and has the inclined-plane with the angle of wedge equal angular of valve body sealing surface above it; Described rotating disc is fixed on the inclined-plane of gradient circle ring disk; Positioning disk is fixed on rotating disc, is provided with locating slot above it; Load-bearing balancing device is positioned at the cavity of gradient circle ring disk, and its one end is fixed on subbase, and the other end and rotating disc lean, and realize rotating disc can around the radial phase rotatable engagement of load-bearing balancing device.Implement the utility model embodiment, to the sealing surface flexible processing in different size valve body, working (machining) efficiency can be improve, reduce mismachining tolerance.

Description

A fixture for processing the sealing surface of a gate valve body

technical field

The utility model relates to the technical field of gate valve body processing equipment, in particular to a fixture for processing the sealing surface of a gate valve body.

Background technique

Gate valves are widely used in the industrial field, and their purpose is to control the flow of fluid in the valve body pipeline through the gate valve. Therefore, in order to ensure the reliable sealing of the gate valve, the relative sealing surfaces of the gate plate and the valve seat are usually designed as a wedge-shaped structure with a wide top and a narrow bottom. Tight to ensure a reliable seal.

In the prior art, as shown in Figure 1, when processing the valve seat sealing surface of valve body a, the end flange of valve body a is usually used for clamping and positioning. The channel is not vertical, but has a wedge angle, so that the sealing surface of the valve seat of the valve body a and the sealing surface of the end flange are not parallel to each other, so in order to process the sealing surface of the valve body a, it is necessary to make the sealing surface of the valve body a horizontal position, usually place a sloping fixture b between the end flange of the valve body a and the installation platform of the vertical lathe, and the bevel angle of the sloping fixture b ^/ is the same as the wedge angle of the sealing surface of the valve body a . When using the above fixtures to process the valve seat sealing surface of the valve body, the different end flanges on both sides of the valve body are used as the processing benchmark. The specific method includes: after processing the valve body sealing surface on one side, Then take the other side flange of the valve body as the positioning reference, reinstall the valve body on the inclination tooling fixture, and process the sealing surface of the other side of the valve body after alignment.

The inventor of the utility model has found that the above method has disadvantages, and the disadvantages are: 1. When the two end flanges on both sides of the valve body are not parallel or not on the same axis, the two sealing surfaces of the valve body will appear. Processing error; 2. Since the two end flanges on both sides of the valve body need to be exchanged as positioning references during processing, the re-clamping of the valve body requires repeated measurement and calibration, resulting in low processing efficiency and large processing errors; 3 , It is impossible to realize flexible processing of sealing surfaces in valve bodies of different sizes.

Contents of the invention

The technical problem to be solved by the embodiment of the utility model is to provide a fixture for processing the sealing surface of the valve body of the gate valve, which can flexibly process the sealing surfaces of the valve body of different sizes, improve the processing efficiency and reduce the processing error.

In order to solve the above technical problems, the embodiment of the utility model provides a tooling fixture for processing the sealing surface of the gate valve body, which is matched with the valve body and includes a chassis seat, a slope ring disc, a rotating disc and a positioning disc; in,

The slope ring disk is fixed on the chassis seat, and an inclined surface having the same angle as the wedge angle of the sealing surface of the valve body is formed above it;

The rotating disk is fixed on the inclined surface of the inclined ring disk;

The positioning disc is fixed on the rotating disc, and a positioning groove for positioning the valve body is arranged above it.

Wherein, a T-shaped circular groove with a circular distribution and a T-shaped longitudinal section is arranged on the slope circular disk, and a plurality of sets of screw and nut assemblies are arranged in the T-shaped circular groove, and each screw and nut assembly is connected to the The inclination ring disk is fixed with the rotating disk.

Wherein, the rotating disk is provided with a circular boss matching with the T-shaped circular groove, so as to realize the centering and positioning of the inclined circular disk and the rotating disk.

Wherein, a positioning taper hole is formed on the side wall of the rotating disk, and a positioning mechanism matched with the positioning taper hole is provided on the sloped circular disk.

Wherein, there are two positioning taper holes, and the two positioning taper holes are oppositely arranged on the side wall of the rotating disk.

Wherein, the rotating disc, the positioning disc and the valve body are fixed by at least one clamping component; wherein, each clamping component includes a pressure plate, a bolt and nut component and an adjustment block.

Wherein, a first positioning hole is provided above the rotating disk, and a second positioning hole opposite to the first positioning hole is provided below the positioning disk, and a positioning block is installed in the first positioning hole and the positioning hole. In the second positioning hole, the positioning of the rotating disk and the positioning disk is realized.

Wherein, the chassis seat is provided with a limit mechanism.

Implementation of the utility model embodiment has the following beneficial effects:

1. In the embodiment of the utility model, since the rotating disk and the positioning disk in the fixture can rotate and cooperate around the load-bearing balance device, there is no need to turn over after the first sealing surface of the valve body is processed, and the other end flange is used as the Positioning datum To process the second sealing surface of the valve body, it is only necessary to rotate the rotating disk together with the positioning disk and the valve body by 180°, so that the other unprocessed sealing surface is in a horizontal position, thereby improving the processing efficiency and reducing the processing error ;

2. In the embodiment of the utility model, due to the use of various positioning methods (such as positioning blocks, positioning mechanisms, adjustment structures and limit mechanisms, etc.) Improve the machining accuracy and reduce the machining error;

3. In the embodiment of the utility model, since the positioning plate in the fixture can be replaced according to the size of the valve body, flexible processing of the sealing surface of the valve body with different sizes can be realized.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model. For those skilled in the art, obtaining other drawings based on these drawings still belongs to the scope of the present utility model without any creative effort.

Fig. 1 is the schematic cross-sectional structural view of the tooling and fixture used for processing the sealing surface of the gate valve body in the prior art;

Fig. 2 is a three-dimensional structural schematic diagram of a fixture for processing the sealing surface of a gate valve body provided by an embodiment of the present invention;

Fig. 3 is the A-A direction sectional view of Fig. 2;

Fig. 4 is the B-B direction sectional view of Fig. 2;

In the figure: a-valve body, b-fixture, 1-chassis seat, 11-limiting mechanism, 12-adjustment structure, 121-fixing seat, 122-screw rod, 123-handle, 124-guide pin, 2-oblique Degree ring disc, 21-cavity, 22-T-shaped ring groove, 23-positioning mechanism, 231-tapered positioning pin, 24-guiding groove, 3-rotary disc, 31-first positioning hole, 32-circle Ring boss, 33-positioning taper hole, 4-positioning plate, 41-positioning groove, 42-second positioning hole, 5-load-bearing balance device, 51-spring, 52-support block, 521-flange, 522-arc Surface, 53-thrust bearing, 6-positioning block, 7-valve body, 8-screw and nut assembly, 9-clamping assembly, 91-pressing plate, 92-bolt and nut assembly, 93-adjusting block.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings.

The direction and position terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", " "Bottom", "side", etc., are only referring to the direction or position of the drawings. Therefore, the terms used in direction and position are used to illustrate and understand the utility model, rather than to limit the scope of protection of the utility model.

As shown in Figure 2 to Figure 4, in the embodiment of the utility model, it is a tooling fixture for processing the sealing surface of the gate valve body, which is matched with the valve body 7, including the chassis seat 1, the slope ring plate 2 , rotating disc 3, positioning disc 4 and load-bearing balance device 5; wherein,

The slope ring disc 2 is fixed on the chassis seat 1, and a slope with the same angle as the wedge angle of the sealing surface of the valve body 7 is formed above it, so that the valve body 7 is fixed in a horizontal position after being fixed on the fixture, which is convenient for processing;

The rotating disk 3 is fixed on the inclined surface of the inclined ring disk 2;

The positioning disc 4 is fixed on the rotary disc 3, and a positioning groove 41 for positioning the valve body 7 is provided above it;

The load-bearing balance device 5 is located in the cavity 21 of the inclined ring disk 2, one end of which is fixed on the chassis seat 1, and the other end is abutted against the rotating disk 3, and the rotating disk 3 can rotate radially around the load-bearing balance device 5 Cooperate.

It should be noted that the positioning plate 4 can be replaced according to the size of the valve body, so that the size of the positioning groove 41 matches the size of the valve body, so as to achieve the purpose of flexibly processing the sealing surface of the valve body of different sizes.

It can be understood that since the rotating disk 3 and the positioning disk 4 in the tooling fixture can rotate around the load-bearing balance device 5, there is no need to turn over the other end flange after processing the first sealing surface of the valve body 7. To process the second sealing surface of the valve body 7 as a reference, it is only necessary to loosen the fixing piece between the inclination ring disc 2 and the rotary disc 3, and rotate the rotary disc 3 together with the positioning disc 4 and the valve body 7 by 180° as a whole. The other processed sealing surface will be in a horizontal position, thereby improving processing efficiency and reducing processing errors.

In order to realize the rotation of the rotating disk 3 together with the positioning disk 4 and the valve body 7 more easily as a whole, the load-bearing balance device 5 includes a spring 51, a support block 52 and a thrust bearing 53; wherein, one end of the spring 51 is fixed on the chassis seat 1, and the other One end abuts against one end of the support block 52; the other end of the support block 52 forms a flange 521, and the end of the flange 521 facing the rotating disk 3 is formed with an arc surface 522 abutting against the rotating disk 3, and the arc surface 522 lowers the The contact surface with the rotating disk 3 is conducive to rotation; the thrust bearing 53 is arranged between the spring 51 and the end of the flange 521 away from the rotating disk 3, and the thrust bearing 53 is conducive to forming a thrust on the rotating disk 3 after the spring 51 is compressed and released , thereby reducing the pressure on the inclined annular disk 2.

In the embodiment of the utility model, a T-shaped annular groove 22 with a circular distribution and a T-shaped longitudinal section is arranged on the inclined annular disk 2, and multiple sets of screw and nut assemblies 8 are arranged in the T-shaped annular groove 22. The inclination ring disk 2 and the rotary disk 3 are fixed by the screw nut assembly 8, so when the rotary disk 3 needs to be rotated, the screw nut assembly 8 only needs to be loosened.

In order to improve machining accuracy and reduce machining errors, the rotating disk 3 is provided with a circular boss 32 matching with the T-shaped circular groove 21, so as to ensure that the rotating disk 3 is accurately centered and positioned with the sloped circular disk 2 after rotation.

In order to further ensure the accuracy of the rotation angle, a positioning taper hole 33 is formed on the side wall of the rotating disk 3, and a positioning mechanism 23 matched with the positioning taper hole 33 is provided on the inclination ring disc 2. The pin 231 is positioned through the tapered positioning pin 231 and the positioning tapered hole 33 .

In order to further ensure that parts such as the rotating disk 3 can rotate accurately by 180°, there are two positioning cone holes 33, and the two positioning cone holes 33 are relatively arranged on the side wall of the rotating disk 3, such as two positioning cone holes 33 distributed On the sidewalls at opposite ends of the rotating disk 3 at an angle of 180°.

In the embodiment of the present utility model, the rotating disk 3, the positioning disk 4 and the valve body 7 are fixed by at least one clamping assembly 9; wherein, each clamping assembly 9 includes a pressure plate 91, a bolt and nut assembly 92 and an adjustment block 93 .

In order to further improve the machining accuracy, the rotating disk 3 and the positioning disk 4 need to be positioned, so the top of the rotating disk 3 is provided with a first positioning hole 31, and the bottom of the positioning disk 4 is provided with a second positioning hole 31 opposite to the first positioning hole 31. The hole 42 is installed in the first positioning hole 31 and the second positioning hole 42 through the positioning block 6 to realize the alignment and positioning of the rotating disk 3 and the positioning disk 4 .

When the sealing surface on one side of the valve body 7 in the horizontal position is processed, the rotating disk 3, the positioning disk 4 and the valve body 7 are rotated 180° as a whole. At this time, the sealing surface on the other side of the valve body 7 is in the horizontal position, but the rotation The sealing surface, which is in the horizontal position at the end, has a lateral offset in its position, so the position of the sealing surface needs to be adjusted. For this reason, an adjustment mechanism 12 is set on the base plate 1, and the adjustment mechanism 12 includes a fixed seat 121, a screw rod 122, a handle 123 and a guide pin 124, wherein the fixed seat 121 is fixed with the base plate 1; It is connected with the handle 123, and the other end passes through the inclination ring disc 2 and the fixing seat 121 successively and is located in the cavity 21 of the inclination ring disc 2, and can rotate and cooperate with the inclination ring disc 2 and the fixing seat 121; The pin 124 cooperates with the guide groove 24 provided below the slope ring disc 2 . The screw rod 122 can only rotate in the inclination ring disc 2 and cannot move. When the screw rod 122 is rotated by the handle 123, the screw rod 122 will drive the inclination ring disc 2 to move left or right, and the guide groove 24 and the guide pin The 124 fit will ensure that the slope annulus 2 can accurately move to the left or right.

Furthermore, adjustable limit mechanisms 11 are provided on the left and right sides of the base plate 1. When the valve body sealing surface on the first side is processed, the valve body sealing surface is adjusted to the center position by measurement. The limit mechanism 11 on the side defines the position. When processing the sealing surface of the valve body on the second side, the sealing surface of the valve body is adjusted to the center position by measurement. At this time, the limit mechanism 11 on the second side will The position is well defined, so that when processing the second valve body with the same size and specification, it is not necessary to adjust the center position of the sealing surface by means of measurement, as long as the limit mechanism 11 on the left and right sides can be used to quickly and accurately locate the valve body. The center position of the two valve body sealing surfaces during processing, so that the valve body sealing surfaces can be processed quickly and accurately.

Implementation of the utility model embodiment has the following beneficial effects:

1. In the embodiment of the utility model, since the rotating disk and the positioning disk in the fixture can rotate and cooperate around the load-bearing balance device, there is no need to turn over after the first sealing surface of the valve body is processed, and the other end flange is used as the Positioning datum To process the second sealing surface of the valve body, it is only necessary to rotate the rotating disk together with the positioning disk and the valve body by 180°, so that the other unprocessed sealing surface is in a horizontal position, thereby improving the processing efficiency and reducing the processing error ;

2. In the embodiment of the utility model, due to the use of various positioning methods (such as positioning blocks, positioning mechanisms, adjustment structures and limit mechanisms, etc.) Improve the machining accuracy and reduce the machining error;

3. In the embodiment of the utility model, since the positioning plate in the fixture can be replaced according to the size of the valve body, flexible processing of the sealing surface of the valve body with different sizes can be realized.

What is disclosed above is only a preferred embodiment of the utility model, and of course it cannot limit the scope of rights of the utility model. Therefore, the equivalent changes made according to the claims of the utility model are still covered by the utility model. scope.

Claims (8)

1. A tool clamp for machining a sealing surface of a gate valve body is matched with a valve body (7) and is characterized by comprising a chassis base (1), an inclination ring disc (2), a rotating disc (3) and a positioning disc (4); wherein,

the inclination ring disc (2) is fixed on the chassis seat (1), and an inclined plane with the same angle as the wedge angle of the sealing surface of the valve body (7) is formed above the inclination ring disc;

the rotating disc (3) is fixed on the inclined plane of the inclined ring disc (2);

the positioning disc (4) is fixed on the rotating disc (3), and a positioning groove (41) for positioning the valve body (7) is arranged above the positioning disc.

2. The tooling fixture for machining the sealing surface of the gate valve body according to claim 1, wherein the inclination circular ring disc (2) is provided with a T-shaped circular ring groove (22) with distributed circular rings and T-shaped longitudinal section, a plurality of groups of screw and nut assemblies (8) are arranged in the T-shaped circular ring groove (22), and the inclination circular ring disc (2) and the rotating disc (3) are fixed through each screw and nut assembly (8).

3. The tool clamp for machining the sealing surface of the gate valve body according to claim 2, wherein the rotating disc (3) is provided with a circular boss (32) which is matched with the T-shaped circular groove (21), so that the inclination circular disc (2) and the rotating disc (3) are centered.

4. The tooling clamp for machining the sealing surface of the gate valve body according to claim 1, wherein a positioning taper hole (33) is formed in the side wall of the rotating disc (3), and a positioning mechanism (23) matched with the positioning taper hole (33) is arranged on the inclined annular disc (2).

5. A tool clamp for machining a sealing surface of a gate valve body according to claim 4, wherein the number of the positioning tapered holes (33) is two, and the two positioning tapered holes (33) are oppositely arranged on the side wall of the rotating disc (3).

6. A tool clamp for machining a sealing surface of a gate valve body according to claim 1, wherein the rotary plate (3), the positioning plate (4) and the valve body (7) are fixed by at least one clamping assembly (9); wherein, each clamping component (9) comprises a pressure plate (91), a bolt and nut component (92) and an adjusting block (93).

7. The tooling fixture for machining the sealing surface of the gate valve body according to claim 1, wherein a first positioning hole (31) is formed above the rotating disc (3), a second positioning hole (42) opposite to the first positioning hole (31) is formed below the positioning disc (4), and the rotating disc (3) and the positioning disc (4) are centered and positioned by installing positioning blocks (6) in the first positioning hole (31) and the second positioning hole (42).

8. A tool clamp for machining a sealing surface of a gate valve body according to claim 1, wherein a limiting mechanism (11) is arranged on the base plate (1).