Valve body machining tool clamp

Abstract

The utility model discloses a valve body machining tool clamp, relates to the field of valve body machining, and aims at solving the problems that in the prior art, an existing clamp fixes a valve body in a clamping mode, but the clamping mode is not stable, and a valve body workpiece is prone to shaking during machining. A positioning protruding block is fixedly connected to the middle of the front end face of the vertical plate, a plurality of second connecting holes are formed in the position, on the outer side of the positioning protruding block, of the middle of the vertical plate in an annular array mode, two sets of first connecting holes in an annular array mode are formed in the vertical plate, a flange connecting disc is connected to the front end of the vertical plate, and supporting blocks are fixedly connected to the two sides of the rear end face of the vertical plate. The lower end of the vertical plate is connected with a plane plate. The problems that an existing clamp is unstable in clamping mode and prone to shaking are effectively solved, the machining precision and stability of the valve body are remarkably improved, and the quality of the machined valve body is ensured.

Description

Technical Field

[0001] The utility model relates to the field of valve body processing, in particular to a valve body processing tooling fixture. Background Art

[0002] Valve body machining is a machine processing method that processes the valve body into the required shape and size by directly cutting, drilling, reaming, hollowing, grinding and other processes on the valve body workpiece. This processing method has the advantages of high processing precision, low cost and high production efficiency. It is widely used in the field of valve manufacturing. During the valve body processing, it is necessary to formulate a process plan based on factors such as precision requirements, blank condition, workpiece material, and equipment conditions. The material blank of the valve body is generally made of forgings or castings, and pre-treatment processes such as solid solution treatment may be required before processing. During processing, it is necessary to use high-efficiency special machines such as CNC machine tools and machining centers, as well as special tools such as diamond reamers and honing sticks to ensure processing accuracy and surface quality. The valve body needs to be fixed with a clamp during processing.

[0003] For example, authorization announcement number CN 213703220 U discloses a tooling fixture for processing a gate valve body, including a base, fixing parts are provided at the four corners of the bottom of the base, a fixing rod is fixedly installed at the top left end of the base, a cylindrical groove is provided at the right end of the base, a rectangular opening is provided at the top end of the inner wall of the cylindrical groove, a bearing is fixedly installed at the right end of the inner wall of the cylindrical groove, a screw is fixedly installed on the inner wall of the inner ring of the bearing, an internal threaded ring is screwed on the screw, a limit piece is provided at the bottom end of the internal threaded ring, and a moving rod is fixedly installed at the top end of the internal threaded ring. The utility model is provided with a fixing rod on the base and a moving rod controlled by the screw and the internal threaded ring. The top ends of the fixing rod and the moving rod are both equipped with cylindrical blocks with plug-in columns. The plug-in columns are inserted into the flange connection holes of the valve body, and the valve body is clamped and fixed by the two cylindrical blocks, thereby increasing the convenience of installing the valve body and the valve cover. It does not require personnel to hold it, is easy to operate, has a reasonable design, and is highly practical.

[0004] Existing fixtures all fix the valve body by clamping, but the clamping method is not stable and is prone to shaking when the valve body workpiece is processed; therefore, the market urgently needs to develop valve body processing tooling fixtures to help people solve existing problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a valve body processing fixture to solve the problem that the existing fixtures proposed in the above background technology all fix the valve body by clamping, but the clamping method is not stable and is prone to shaking when the valve body workpiece is processed.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a valve body processing fixture includes a vertical plate, a positioning protrusion is fixedly connected to the middle of the front end face of the vertical plate, a plurality of second connection holes are arranged in a circular array in the middle of the vertical plate and on the outside of the positioning protrusion, two groups of first connection holes in a circular array are arranged on the vertical plate, the front end of the vertical plate is connected to a flange connection plate, support blocks are fixedly connected on both sides of the rear end face of the vertical plate, and the lower end of the vertical plate is connected to a flat plate.

[0007] Preferably, a circular positioning groove is provided in the middle of the flange connecting plate, and the positioning protrusion is inserted into the circular positioning groove in the middle of the flange connecting plate.

[0008] Preferably, the flange connection plate and the vertical plate are fixed by a plurality of second connection bolts which pass through a plurality of second connection holes and are then inserted into the inner thread of the flange connection plate.

[0009] Preferably, a group of first connecting holes are inserted with first connecting bolts, and the threaded ends of the first connecting bolts pass through the flange connecting plate and extend out of the front end surface of the flange connecting plate and are fixedly connected to the valve body.

[0010] Preferably, the front ends of the two support blocks are welded to the rear end surface of the vertical plate, and the lower ends of the two support blocks are fixedly connected to the flat plate by screws.

[0011] Preferably, threaded holes are provided on both sides of the lower end surface of the vertical plate, circular grooves are provided on both sides of the middle part of the lower end surface of the flat plate, and spring washers are provided inside the two circular grooves.

[0012] Preferably, the vertical plate and the flat plate are fixed by a third connecting bolt which passes through the inside of the circular groove and the middle of the spring washer therein and then is inserted into the threaded hole on the lower end surface of the vertical plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] (1) This utility model adopts a detachable connection method between the flange connection plate and the vertical plate. The flange connection plate is firmly fixed to the vertical plate by passing through the second connection holes using a plurality of second connection bolts, thereby further enhancing the stability of the connection. In addition, the first connection bolts are passed through the first connection holes to be fixedly connected to the valve body, thereby achieving stable clamping of the valve body during the processing process. This clamping method effectively avoids the problems of instability and easy shaking of the existing clamping method, significantly improves the accuracy and stability of the valve body processing, and ensures the quality of the processed valve body.

[0015] (2) In this utility model, the vertical plate is effectively supported and fixed by providing a support block and a flat plate, thereby preventing the vertical plate from deforming or shaking during processing. At the same time, the third connecting bolt is inserted through the circular groove and the spring washer inside and then inserted into the threaded hole on the lower end surface of the vertical plate for threaded connection and fixation, further enhancing the overall stability of the clamp. The addition of the spring washer not only improves the reliability of the bolt connection, but also effectively prevents the bolt from loosening, thereby extending the service life of the clamp.

[0016] (3) In this utility model, the precise positioning and rapid assembly of the fixture during the valve body clamping process are achieved through the ingenious arrangement of the positioning protrusions. The positioning protrusions not only serve as a preliminary positioning device between the flange connection plate and the vertical plate, ensuring the precise alignment of the two during installation, but also effectively prevent the fixture from loosening or dislocation due to vibration or external force during the processing through its unique structural design. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of the valve body processing fixture of the utility model;

[0018] Figure 2 This is a main sectional view of the vertical plate of the present utility model;

[0019] Figure 3 This is a side sectional view of the positioning protrusion of the utility model;

[0020] Figure 4 It is a side sectional view of the second connecting hole of the present invention.

[0021] In the figure: 1. Vertical plate; 101. First connecting hole; 102. Second connecting hole; 103. Positioning protrusion; 104. Threaded hole; 105. First connecting bolt; 2. Flange connecting plate; 201. Circular positioning groove; 202. Second connecting bolt; 3. Support block; 4. Flat plate; 401. Circular groove; 402. Spring washer; 5. Third connecting bolt. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] See also Figure 1-4, the utility model provides an embodiment: a valve body processing fixture, including a vertical plate 1, a positioning protrusion 103 is fixedly connected to the middle of the front end surface of the vertical plate 1, a plurality of second connecting holes 102 are arranged in a circular array in the middle of the vertical plate 1 and outside the positioning protrusion 103, two groups of first connecting holes 101 in a circular array are arranged on the vertical plate 1, the front end of the vertical plate 1 is connected to the flange connecting plate 2, a circular positioning groove 201 is arranged in the middle of the flange connecting plate 2, the positioning protrusion 103 is inserted into the inside of the circular positioning groove 201 in the middle of the flange connecting plate 2, so that the flange connecting plate 2 and the vertical plate 1 are initially positioned, and the flange connecting plate 2 and the vertical plate 1 are connected by a plurality of second connecting bolts 202 respectively passing through the plurality of second connecting bolts. After the hole 102 is inserted, the internal thread of the flange connecting plate 2 is connected and fixed. A first connecting bolt 105 is inserted into a group of first connecting holes 101. The threaded end of the first connecting bolt 105 passes through the flange connecting plate 2 and extends out of the front end surface of the flange connecting plate 2 and is fixedly connected to the valve body, so that the flange connecting plate 2 and the processed valve body are connected by the first connecting bolt 105, so as to realize the fixed clamping of the valve body and prevent the valve body from shaking due to unstable clamping during processing. At the same time, by replacing flange connecting plates 2 of different specifications and fixing them with the second connecting bolt 202, the valve body is fixed after the first connecting bolt 105 passes through one of the two groups of first connecting holes 101 to realize the clamping of valve bodies of different specifications.

[0024] See also Figure 1-2 , support blocks 3 are fixedly connected on both sides of the rear end face of the vertical plate 1, and the lower end of the vertical plate 1 is connected to the flat plate 4. The front ends of the two support blocks 3 are welded to the rear end face of the vertical plate 1, and the lower ends of the two support blocks 3 are fixedly connected to the flat plate 4 by screws, and the vertical plate 1 is stably supported by the support blocks 3.

[0025] See also Figure 2 , threaded holes 104 are provided on both sides of the lower end surface of the vertical plate 1, and circular grooves 401 are provided on both sides of the middle part of the lower end surface of the flat plate 4, and spring washers 402 are provided inside the two circular grooves 401. The vertical plate 1 and the flat plate 4 are connected and fixed by the third connecting bolt 5 that passes through the inside of the circular groove 401 and the middle part of the spring washer 402 inside the circular groove 401, and then inserted into the internal threaded hole 104 of the lower end surface of the vertical plate 1 to fix the vertical plate 1 and the flat panel 4. The vertical plate 1 and the flat panel 4 can be separated by removing the third connecting bolt 5.

[0026] Working Principle: When in use, first select a suitable flange connection plate 2 according to the specifications of the valve body to be processed, and securely connect it to the vertical plate 1 through the second connection hole 102 using multiple second connection bolts 202. Subsequently, the valve body is placed on the flange connection plate 2 and securely connected to the valve body using the first connection bolt 105, which passes through the appropriate first connection hole 101, to ensure that the valve body is stably clamped. At this time, due to the cooperation between the positioning protrusion 103 and the circular positioning groove 201, as well as the tightening effect of the first connection bolt 105, the valve body is less likely to shake during the processing, ensuring the processing accuracy and stability. At the same time, the stable connection between the vertical plate 1 and the flat plate 4 through the support block 3, and the threaded connection between the third connection bolt 5 and the vertical plate 1 through the spring washer 402, further enhance the stability of the entire fixture. After processing is completed, simply loosen the first connection bolt 105 and the third connection bolt 5 to easily separate the valve body from the fixture, making it convenient for the next process or replacing a valve body of different specifications for processing.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A valve body processing fixture, comprising a vertical plate (1), characterized in that: A positioning protrusion (103) is fixedly connected to the middle of the front end face of the vertical plate (1), a plurality of second connection holes (102) are provided in a circular array in the middle of the vertical plate (1) and outside the positioning protrusion (103), two groups of first connection holes (101) in a circular array are provided on the vertical plate (1), a flange connection plate (2) is connected to the front end of the vertical plate (1), support blocks (3) are fixedly connected to both sides of the rear end face of the vertical plate (1), and a flat plate (4) is connected to the lower end of the vertical plate (1).

2. The valve body processing fixture according to claim 1, characterized in that: A circular positioning groove (201) is provided in the middle of the flange connection plate (2), and the positioning protrusion (103) is inserted into the interior of the circular positioning groove (201) in the middle of the flange connection plate (2).

3. The valve body processing fixture according to claim 1, characterized in that: The flange connection plate (2) and the vertical plate (1) are connected and fixed by a plurality of second connection bolts (202) which pass through the plurality of second connection holes (102) and are then inserted into the internal threads of the flange connection plate (2).

4. The valve body processing fixture according to claim 1, characterized in that: A first connection bolt (105) is inserted into a group of the first connection holes (101), and the threaded end of the first connection bolt (105) passes through the flange connection plate (2) and extends out of the front end surface of the flange connection plate (2) to be fixedly connected to the valve body.

5. The valve body processing fixture according to claim 1, characterized in that: The front ends of the two support blocks (3) are welded to the rear end of the vertical plate (1), and the lower ends of the two support blocks (3) are fixedly connected to the plane plate (4) by screws.

6. The valve body processing fixture according to claim 1, characterized in that: Threaded holes (104) are provided on both sides of the lower end surface of the vertical plate (1), circular grooves (401) are provided on both sides of the middle portion of the lower end surface of the plane plate (4), and spring washers (402) are provided inside the two circular grooves (401).

7. The valve body processing fixture according to claim 6, characterized in that: The vertical plate (1) and the flat plate (4) are connected and fixed by a third connecting bolt (5) which passes through the inside of the circular groove (401) and the middle of the spring washer (402) therein and then is inserted into the threaded hole (104) on the lower end surface of the vertical plate (1).

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