Split type eccentric valve body positioning device and positioning method

Abstract

The invention provides a split type eccentric valve body positioning device and a positioning method.The positioning device comprises an eccentric positioning plate and a pressing plate, a plurality of eccentric grooves are machined in the eccentric positioning plate, and the shapes and the sizes of the eccentric grooves are consistent with those of a split type eccentric valve body; a circular protruding part corresponding to the bottom structure of the split type eccentric valve body is arranged in the eccentric groove, and a plurality of positioning bolt holes are machined in the surface of the eccentric positioning plate. A plurality of product mounting holes are formed in the pressing plate, and each product mounting hole corresponds to the structure of the cylindrical part at the top of the split type eccentric valve body; a plurality of stepped holes are machined in the surface of the pressing plate, the positioning bolts are inserted into the stepped holes and then are in threaded connection with the positioning bolt holes in the eccentric positioning plate, the pressing plate is connected with the eccentric positioning plate, and the split type eccentric valve body located between the eccentric positioning plate and the pressing plate is pressed. The device can assist in completing clamping and positioning during machining, is high in positioning precision and clamping efficiency, is simple and convenient to operate, can reduce the alignment difficulty, and effectively shortens the product machining time.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a split eccentric valve body positioning device and a positioning method. Background Art

[0002] The valve body is an important component of the fuel system, cooling system, exhaust system and other parts of special vehicles. Its function is to control the flow of fluid or gas. The processing quality of this product affects the stable operation of the entire vehicle. Since a certain type of valve body has an eccentric structure, a three-jaw chuck is usually used for clamping and alignment in one of the processing procedures. The alignment process is very time-consuming, and only one workpiece can be clamped at a time, resulting in difficulty in product clamping and alignment and low efficiency. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] The present invention provides a split eccentric valve body positioning device and a positioning method to solve the technical problems of great difficulty and low efficiency in clamping and positioning of the split eccentric valve body.

[0005] (II) Technical solution

[0006] In order to solve the above technical problems, the present invention proposes a split eccentric valve body positioning device, which includes an eccentric positioning plate and a pressure plate; wherein,

[0007] The eccentric positioning plate is processed with multiple eccentric grooves, the shape and size of the eccentric grooves are consistent with those of the split eccentric valve body, and a circular protrusion corresponding to the bottom structure of the split eccentric valve body is arranged in the eccentric groove; the surface of the eccentric positioning plate is processed with multiple positioning bolt holes; the pressure plate is processed with multiple product installation holes, each product installation hole corresponds to the top cylindrical part structure of the split eccentric valve body; the surface of the pressure plate is processed with multiple step holes, and the positioning bolts are inserted into the step holes and threadedly connected with the positioning bolt holes on the eccentric positioning plate, so as to connect the pressure plate with the eccentric positioning plate and press the split eccentric valve body between the eccentric positioning plate and the pressure plate.

[0008] Furthermore, four eccentric grooves are processed on the eccentric positioning plate.

[0009] Furthermore, five positioning bolt holes are processed on the surface of the eccentric positioning plate.

[0010] Furthermore, four product installation holes are processed on the pressing plate.

[0011] Furthermore, the surface of the pressing plate is processed with five stepped holes.

[0012] Furthermore, guide holes corresponding to the positioning holes on the bottom flange of the split eccentric valve body are processed around each product installation hole on the pressure plate, and the guide column can be inserted into the positioning hole on the bottom flange after passing through the guide hole.

[0013] Furthermore, four guide holes are processed around each product installation hole.

[0014] In addition, the present invention also proposes a split eccentric valve body positioning method, which adopts the above-mentioned positioning device, places the split eccentric valve body product into the eccentric groove on the eccentric positioning plate, and uses the eccentric groove to preliminarily position the product; adjusts the position of the product so that the bottom of the product coincides with the center line of the circular protrusion in the eccentric groove to ensure accurate positioning; places the pressure plate on the product, and connects the pressure plate to the eccentric positioning plate through positioning bolts; gradually tightens the positioning bolts so that the pressure plate applies a clamping force to the product.

[0015] Further, the press plate is placed on the product using guide pins.

[0016] (III) Beneficial effects

[0017] The present invention proposes a split eccentric valve body positioning device and positioning method. The positioning device includes an eccentric positioning plate and a pressure plate. The eccentric positioning plate is processed with a plurality of eccentric grooves. The shape and size of the eccentric grooves are consistent with the split eccentric valve body. A circular protrusion corresponding to the bottom structure of the split eccentric valve body is arranged in the eccentric groove. The surface of the eccentric positioning plate is processed with a plurality of positioning bolt holes; the pressure plate is processed with a plurality of product installation holes, each product installation hole corresponds to the top cylindrical part structure of the split eccentric valve body; the surface of the pressure plate is processed with a plurality of step holes. After the positioning bolts are inserted into the step holes, they are threadedly connected with the positioning bolt holes on the eccentric positioning plate, and the pressure plate is connected with the eccentric positioning plate to press the split eccentric valve body between the eccentric positioning plate and the pressure plate. The device can assist in completing the clamping and positioning during processing, has high positioning accuracy, high clamping efficiency, and is easy to operate. It can reduce the difficulty of alignment and effectively shorten the product processing time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure decomposition of the split eccentric valve body positioning device of the present invention;

[0019] Figure 2 This is a front view of the eccentric positioning plate structure in the present invention;

[0020] Figure 3 This is a front view of the pressure plate structure of the present invention;

[0021] Figure 4a This is a front view of the split eccentric valve body positioning method of the present invention, Figure 4b is a side view, Figure 4c This is the rear view. DETAILED DESCRIPTION

[0022] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples.

[0023] This embodiment provides a split eccentric valve body positioning device, the structure of which is as follows: Figures 1 to 3 As shown, it mainly includes an eccentric positioning plate 1 and a pressing plate 2.

[0024] The eccentric positioning plate 1 is processed with a plurality of eccentric grooves, the shape and size of which are consistent with the split eccentric valve body, and the eccentric grooves are provided with circular protrusions corresponding to the bottom structure of the split eccentric valve body. The surface of the eccentric positioning plate 1 is processed with a plurality of positioning bolt holes.

[0025] The pressing plate 2 is processed with a plurality of product installation holes, each of which corresponds to the top cylindrical structure of the split eccentric valve body. The surface of the pressing plate 2 is processed with a plurality of step holes, and the positioning bolts 3 are inserted into the step holes and threadedly connected with the positioning bolt holes on the eccentric positioning plate 1, thereby connecting the pressing plate 2 with the eccentric positioning plate 1 and pressing the split eccentric valve body between the eccentric positioning plate 1 and the pressing plate 2.

[0026] Four guide holes corresponding to the positioning holes on the bottom flange of the split eccentric valve body are processed around each product installation hole on the pressure plate 2, and the guide column can be inserted into the positioning hole on the bottom flange after passing through the guide hole.

[0027] When using the positioning device of the present invention for processing positioning, Figures 4a to 4c As shown, place the split eccentric valve body product into the eccentric groove on the eccentric positioning plate 1, and use the eccentric groove to preliminarily position the product; adjust the position of the product so that the bottom of the product coincides with the center line of the circular protrusion in the eccentric groove to ensure accurate positioning; use the guide column to place the pressing plate 2 on the product, and connect the pressing plate 2 to the eccentric positioning plate 1 through the positioning bolts 3; gradually tighten the positioning bolts 3 so that the pressing plate 2 applies a clamping force to the product. Check the clamping condition of the workpiece to ensure that the workpiece will not move or deform during the processing. Therefore, using this positioning device to process the eccentric valve body can greatly improve the clamping efficiency and clamping accuracy.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A split eccentric valve body positioning device, characterized in that: The split eccentric valve body positioning device comprises an eccentric positioning plate and a pressure plate; wherein, The eccentric positioning plate is processed with a plurality of eccentric grooves, the shape and size of the eccentric grooves are consistent with the split eccentric valve body, and a circular protrusion corresponding to the bottom structure of the split eccentric valve body is arranged in the eccentric groove; the surface of the eccentric positioning plate is processed with a plurality of positioning bolt holes; The pressure plate is processed with a plurality of product installation holes, each of which corresponds to the top cylindrical part structure of the split eccentric valve body; the surface of the pressure plate is processed with a plurality of step holes, and the positioning bolts are inserted into the step holes and threadedly connected with the positioning bolt holes on the eccentric positioning plate, so as to connect the pressure plate with the eccentric positioning plate and tighten the split eccentric valve body between the eccentric positioning plate and the pressure plate.

2. The split eccentric valve body positioning device according to claim 1, characterized in that: The eccentric positioning plate is machined with four eccentric grooves.

3. The split eccentric valve body positioning device according to claim 1, characterized in that: The surface of the eccentric positioning plate is processed with five positioning bolt holes.

4. The split eccentric valve body positioning device according to claim 1, characterized in that: Four product installation holes are processed on the pressing plate.

5. The split eccentric valve body positioning device according to claim 1, characterized in that: The surface of the pressing plate is processed with five step holes.

6. The split eccentric valve body positioning device according to claim 1, characterized in that: The pressure plate is processed with guide holes corresponding to the positioning holes on the bottom flange of the split eccentric valve body around each product installation hole, and the guide column can be inserted into the positioning hole on the bottom flange after penetrating the guide hole.

7. The split eccentric valve body positioning device according to claim 6, characterized in that: Four guide holes are processed around each product installation hole.

8. A method for positioning a split eccentric valve body, characterized in that: The split eccentric valve body positioning method adopts the positioning device described in any one of claims 1 to 7, places the split eccentric valve body product into the eccentric groove on the eccentric positioning plate, and uses the eccentric groove to preliminarily position the product; adjusts the position of the product so that the bottom of the product coincides with the center line of the circular protrusion in the eccentric groove to ensure accurate positioning; places the pressure plate on the product, and connects the pressure plate to the eccentric positioning plate through positioning bolts; gradually tightens the positioning bolts so that the pressure plate applies a clamping force to the product.

9. The method for positioning a split eccentric valve body according to claim 8, characterized in that: Use the guide pins to position the platen on the product.

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