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Processing method of valve inclined flow passage
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A processing method, oblique flow technology, applied in the field of mechanical processing
Active Publication Date: 2009-10-07
CHENGDU HANGTIAN PHOTOELECTRIC TECH
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[0005] The purpose of the present invention is to solve the problem existing in the prior art that manufacturers with advantages in mechanical processing cannot obtain a valve body inclined flow channel with good performance through mechanical processing, and to provide a processing method for a valve body inclined flow channel. method, the inclined flow channel with smooth transition can be made in the valve body by machining, the processing is simple and easy to realize, and it can meet the requirements of mechanical processing enterprises to manufacture the inclined flow channel of the valve body at a lower cost
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Embodiment 1
[0022] Embodiment 1: In this embodiment, the inclined flow channel to be processed is not communicated with the cavity except at both ends, and its middle part is not communicated with the cavity. The processing steps are as follows:
[0023] a. First, mill out the inclined flow path on the end face of the valve body according to the designed flow path direction;
[0024] b. Then, on the end face of the valve body where the side wall of the inclined flow channel is located, a step matching the shape of the inclined flow channel is milled along the direction of the inclined flow channel;
[0025] c. Embed the first insert whose shape matches the shape of the inclined runner and place it on the step;
[0026] d. Use the same solder as the base material of the valve body to form a surfacing layer on the first insert to fill up the reserved groove between the first insert and the end surface of the valve body;
[0027] e. Grind off the excess solder that is higher than the end fa...
Embodiment 2
[0028] Embodiment 2: as figure 1 , figure 2 As shown, in this embodiment, the middle part of the inclined flow channel 2 to be processed needs to communicate with the cavity 3, and the processing steps are as follows:
[0029] a. First, mill out the inclined flow channel 2 on the end surface of the valve body 1 according to the designed flow channel direction;
[0030] b. Then, on the end face of the valve body 1 where the side wall of the inclined flow channel 2 is located, a step 7 matching the shape of the inclined flow channel 2 is milled out along the direction of the inclined flow channel 2;
[0031] c. Embed the first insert 4 whose shape matches the shape of the inclined flow channel 2, and place it on the step 7;
[0032] d0. Place a second insert 6 whose width is compatible with the sum of the thickness of the first insert 4 and the surfacing layer 5 at the connection between the inclined flow channel 2 and the cavity 3;
[0033] d. Use the same solder surfacing ...
Embodiment 3
[0037] Embodiment 3: In this embodiment, the oblique flow passage of the valve body to be processed is the same as that in embodiment 1, but the oblique flow passage is wider than that of embodiment 1, and the processing steps are as follows:
[0038] a. First, mill out the inclined flow path on the end face of the valve body according to the designed flow path direction;
[0039] b. Then, on the end face of the valve body where the side wall of the inclined flow channel is located, a step matching the shape of the inclined flow channel is milled along the direction of the inclined flow channel;
[0040] c. Embed the first insert whose shape matches the shape of the inclined runner and place it on the step;
[0041] d. Use the same solder as the base material of the valve body to form a surfacing layer on the first insert to fill up the reserved groove between the first insert and the end surface of the valve body, such as image 3 As shown, the height of the first insert 4 i...
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Abstract
The invention relates to a processing method of a valve inclined flow passage, which relates to a mechanical processing method of a flow passage inside a valve. Aiming to solve the problem that the production enterprise with the advantage of mechanical processing can not obtain the valve inclined flow passage of good performance in a mechanical processing mode in prior art, the processing method of the valve inclined flow passage includes the following steps: the inclined flow passage is milled on the end surface of the valve according to the designed direction of the flow passage; a step with the shape matched with the shape of the direction of the inclined flow passage is milled on the end surface of the valve along the direction of the inclined flow passage, and the side wall of the inclined flow passage is at the end surface of the valve; a first insert with the appearance matched with the shape of the direction of the inclined flow passage is embedded and placed on the step; a welding material same as the master batch of the valve is piled and welded on the first insert to form a piling and welding layer to level a groove previously left between the first insert and the end surface of the valve; and the surplus welding material of the piling and welding layer higher than the end surface of the valve is polished off to level the end surface. The invention is suitable for enterprises with the advantage of mechanical processing to product the valve with the inclined flow passage of good performance in a mechanical processing mode.
Description
technical field [0001] The invention belongs to the field of mechanical processing, and in particular relates to a mechanical processing method of a flow channel in a valve body. Background technique [0002] In hydraulic control valves, there are generally liquid flow cavities, and flow passages are usually used to communicate between any two or more cavities that need to communicate. In order to reduce the pressure loss at the valve port, avoid sharp turns of flow passages and It is easy to generate the sharp edge of the vortex area and avoid interference with other nearby flow channels or holes. A certain section of the flow channel is neither parallel nor perpendicular to the axis of the valve core hole to form an inclined flow channel. The cross section of the inclined flow channel is rectangular. There are rounded corners with smooth transitions at the joints of each section, which are usually produced by casting technology. It is difficult to achieve smooth rounded co...
Claims
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Application Information
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