Positioning tool for improving machining concentricity of valve body

Abstract

The utility model discloses a positioning tool for improving the machining concentricity of a valve body. The positioning tool is characterized by comprising a positioning base, a positioning block arranged on the positioning base and an inner hole positioning block which is detachably mounted on the positioning block and is used for improving the machining concentricity of the valve body, and an inner hole positioning boss is arranged on the inner hole positioning block. The two ends of the valve body are positioned through the positioning blocks, the inner hole of the valve body is positioned through the inner hole positioning bosses on the inner hole positioning blocks, the positioning and mounting precision of the valve body is improved, and therefore the machining concentricity of flange screw holes in the valve body is improved; the inner hole positioning block 3 is detachably installed on the positioning block 2, and when valve bodies of different specifications are machined, the inner hole positioning block 3 of the corresponding specification can be replaced to position the valve bodies, so that the use range is expanded, and the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of valve body processing positioning tools, and specifically refers to a positioning tool for improving the concentricity of valve body processing. Background Technique

[0002] When processing a three-way valve body, a positioning tool is needed for positioning and then placing it on the processing equipment to process the screw holes on the three flanges of the valve body. In the existing technology, the positioning tool for the valve body only positions the outer surface of the three-way valve body, but most of the outer surfaces of the valve body are uneven and unprocessed, which is likely to cause the valve body to shift during the positioning of the three-way valve body, thus reducing the concentricity of the screw hole processing on the flange. Moreover, the existing positioning tools are all of an integral structure, and corresponding positioning tools need to be replaced when processing valve bodies of different specifications, thus increasing the use cost. Therefore, a positioning tool for improving the concentricity of valve body processing is proposed, which can accurately position the valve body and improve the concentricity of valve body processing. Summary of the Invention

[0003] The purpose of the utility model is to propose a positioning tool for improving the concentricity of valve body processing to solve the above problems.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A positioning tool for improving the concentricity of valve body processing, which is characterized by including a positioning base, a positioning block arranged on the positioning base, and an inner hole positioning block that is detachably installed on the positioning block to improve the concentricity of valve body processing; an inner hole positioning boss is arranged on the inner hole positioning block.

[0005] Preferably, a plurality of machining avoidance holes distributed in a circle are further arranged on the inner hole positioning block.

[0006] Preferably, a plurality of positioning pins for facilitating the installation of the inner hole positioning block are installed between the inner hole positioning block and the positioning block.

[0007] Preferably, a positioning groove for positioning both ends of the valve body is arranged on the positioning block.

[0008] The beneficial effects of the utility model: By using the positioning block to position both ends of the valve body and the inner hole positioning boss on the inner hole positioning block to position the inner hole of the valve body, the positioning and installation accuracy of the valve body is improved, thereby improving the concentricity of the flange screw hole processing on the valve body;

[0009] By detachably installing the inner hole positioning block on the positioning block, when processing valve bodies of different specifications, the corresponding inner hole positioning block can be replaced to position the valve body, thereby expanding the scope of use and reducing the use cost. Description of the Drawings

[0010] Figure 1It is a structural schematic diagram of the present utility model.

[0011] Figure 2 It is the left view of the present utility model.

[0012] Figure 3 It is a structural schematic diagram of another perspective of the present utility model.

[0013] Legend Explanation: 1. Positioning base; 2. Positioning block; 201. Positioning groove; 3. Inner hole positioning block; 301. Inner hole positioning boss; 302. Machining avoidance hole; 303. Positioning pin. Specific Embodiment

[0014] Next, we will further explain a positioning tooling for improving the concentricity of valve body machining of the present utility model in conjunction with the attached drawings.

[0015] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture as shown in the attached drawings. If this specific posture changes, then the directional indications will also change accordingly.

[0016] Participate in the attached Figures 1-3 As shown, a positioning tooling for improving the concentricity of valve body machining in this embodiment includes a positioning base 1, a positioning block 2 provided on the positioning base 1, and an inner hole positioning block 3 for improving the concentricity of valve body machining detachably installed on the positioning block 2 by screws; an inner hole positioning boss 301 is provided on the inner hole positioning block 3; by using the positioning block 2 to position both ends of the valve body and the inner hole positioning boss 301 on the inner hole positioning block 3 to position the inner hole of the valve body, the positioning and installation accuracy of the valve body is improved, thereby improving the concentricity of the flange screw hole machining on the valve body; by detachably installing the inner hole positioning block 3 on the positioning block 2, when machining valve bodies of different specifications, the corresponding inner hole positioning block 3 can be replaced to position the valve body, thereby expanding the scope of use and reducing the use cost.

[0017] Participate in the attached Figure 1 As shown, a plurality of machining avoidance holes 302 are further provided on the inner hole positioning block 3; by using the machining avoidance holes 302, the normal machining of the valve body by the equipment can be not interfered, and the valve body can be machined at one time, thereby facilitating the machining of the valve body and improving the machining consistency.

[0018] Participate in the attached Figure 1 As shown, a plurality of positioning pins 303 for facilitating the installation of the inner hole positioning block 3 are installed between the inner hole positioning block 3 and the positioning block 2; by using the positioning pins 303 to position and install the inner hole positioning block 3 on the positioning block 2, the positioning and installation of the inner hole positioning block 3 are facilitated.

[0019] Participate in the appendix Figures 2-3 As shown in Figures 2-3 , the positioning block 2 is provided with positioning grooves 201 for positioning both ends of the valve body. By using the positioning grooves 201 on the positioning block 2 to position both ends of the valve body respectively, the positioning of the valve body is facilitated.

[0020] In the assembly process of the present utility model, first, the inner hole positioning block 3 is positioned and installed on the positioning block 2 through the positioning pin 303, and the inner hole positioning block 3 is fixed by screws. Then, both ends of the valve body to be processed are placed in the positioning grooves 201 on the positioning block 2 to position both ends of the valve body. At the same time, the inner hole positioning boss 301 on the inner hole positioning block 3 is installed into the processed inner hole of the valve body, so that the valve body is positioned at three points on the positioning fixture. During processing, only the positioning fixture with the valve body placed thereon needs to be installed on the workbench of the processing equipment, and the valve body is fixed by using a pressing plate.

[0021] The above embodiments are illustrative of the present utility model and not restrictive thereof. Any solution obtained by simply transforming the present utility model falls within the protection scope of the present utility model.

Claims

1. A positioning tool for improving the concentricity of valve body processing, which features include positioning A base (1), a positioning block (2) arranged on the positioning base (1), and an inner hole positioning block (3) detachably mounted on the positioning block (2) to improve the concentricity of the valve body during machining; the inner hole positioning block (3) is provided with an inner hole positioning boss (301).

2. A positioning tool for improving the concentricity of valve body processing according to claim 1, characterized in that: The inner hole positioning block (3) is also provided with a plurality of machining avoidance holes (302) distributed along a circumference.

3. A positioning tool for improving the concentricity of valve body processing according to claim 2, characterized in that: A plurality of positioning pins (303) are installed between the inner hole positioning block (3) and the positioning block (2) to facilitate the installation of the inner hole positioning block (3).

4. A positioning tool for improving the concentricity of valve body processing according to claim 3, characterized in that: The positioning block (2) is provided with positioning grooves (201) for positioning the two ends of the valve body.

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