Valve body positioning fixture

Abstract

The utility model belongs to valve body part positioning fixture technical field, especially a valve body part positioning tool, including the bottom plate, 4 support blocks are fixedly installed on the bottom plate, still install diagonal distribution's no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups no. The two groups

Description

Technical Field

[0001] This utility model belongs to the technical field of valve body part positioning fixtures, specifically relating to a valve body part positioning tooling. Background Technology

[0002] Valve body part positioning fixture is a precision mechanical device. Its core function is to quickly and accurately position irregularly shaped valve body blanks or semi-finished products with complex machining datums using carefully designed V-blocks, support plates and adjustable positioning pins, and apply uniform and reliable locking force using a spiral or pneumatic clamping mechanism to firmly constrain them in the predetermined machining position.

[0003] However, most existing fixtures use a longitudinal clamping method, relying on longitudinal clamping to achieve synchronous lateral positioning, thus requiring a large clamping force; there is a cylinder workpiece 8, such as... Figure 5 As shown, its surface is formed by casting with positioning groove 81 and flow channel 82, and then a connecting hole 83 connected to the flow channel 82 needs to be machined on the workpiece 8.

[0004] In order to reduce weight and material consumption, the overall thickness of workpiece 8 is reduced compared to the traditional type. This makes it easy to deform during clamping. If the longitudinal clamping force is reduced, workpiece 8 will experience lateral displacement during drilling, tapping or milling processes, which will lead to machining errors.

[0005] To address the aforementioned issues, this application proposes a valve body positioning fixture. Utility Model Content

[0006] To address the aforementioned problems in the existing technology, this utility model provides a valve body positioning fixture that can disperse clamping force and clamping direction, ensuring stable clamping of lightweight workpieces.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a valve body positioning fixture, including a base plate, on which four support blocks are fixedly installed. A first pressure claw and a second pressure claw, diagonally distributed, are also installed on the base plate, with the two sets of first and second pressure claws corresponding to the support blocks. The second pressure claw includes a second hydraulic cylinder and a second pressure plate. The second pressure plate and the support blocks are vertically aligned to clamp the workpiece longitudinally. A side plate is fixed to the side of the second pressure plate, forming a surface contact with the side of the workpiece, thereby laterally positioning the workpiece.

[0008] As a preferred technical solution of this utility model, a T-shaped block is fixed on the side plate near the second pressure plate, and a T-shaped groove is opened on the second pressure plate to be inserted and connected with the T-shaped block, with the insertion direction being longitudinal.

[0009] As a preferred embodiment of this utility model, the side plate and the second pressure plate are fixed by bolts.

[0010] As a preferred technical solution of this utility model, two anti-foolproof blocks corresponding to the workpieces are fixed on the base plate, and a positioning pin corresponding to the positioning groove is also fixed on the base plate.

[0011] As a preferred technical solution of this utility model, the first pressure claw includes a first hydraulic cylinder and a first pressure plate, and the first pressure plate and the support block are vertically aligned to clamp the workpiece longitudinally.

[0012] As a preferred embodiment of this utility model, the base plate is provided with a chip discharge port and a tool setting hole, and the chip discharge port corresponds to the connecting hole on the workpiece.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention uses two sets of No. 1 clamping jaws and two sets of No. 2 clamping jaws to achieve longitudinal clamping at four points on the workpiece. At the same time, a side plate is set on the No. 2 pressure plate of the No. 2 clamping jaw. The side plate can position the workpiece laterally. Then, with the interaction of the anti-fooling block and the positioning pin, the clamping force of the No. 1 clamping jaw can be reduced while preventing lateral displacement of the part and controlling the processing error. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the workpiece clamping structure of this utility model; Figure 3 for Figure 2 Rear view structural diagram; Figure 4 This is a structural diagram showing the disassembly of the No. 2 pressure plate and the side plate; Figure 5 This is a schematic diagram of the workpiece's structure; In the diagram: 1. Base plate; 101. Chip discharge port; 102. Tool setting hole; 2. Support block; 3. No. 1 pressure claw; 31. No. 1 hydraulic cylinder; 32. No. 1 pressure plate; 4. No. 2 pressure claw; 41. No. 2 hydraulic cylinder; 42. No. 2 pressure plate; 421. T-slot; 5. Side plate; 51. T-block; 6. Anti-fooling block; 7. Positioning pin; 8. Workpiece; 81. Positioning groove; 82. Flow channel; 83. Connecting hole. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0016] Please see Figure 1 - Figure 5 The present invention provides the following technical solution: a valve body positioning fixture, including a base plate 1, on which four support blocks 2 are fixedly installed. A first pressure claw 3 and a second pressure claw 4 are also installed on the base plate 1 in a diagonally distributed manner, with the two sets of first pressure claw 3 and second pressure claw 4 corresponding to the support blocks 2. The second pressure claw 4 includes a second hydraulic cylinder 41 and a second pressure plate 42. The second pressure plate 42 and the support blocks 2 are vertically aligned to clamp the workpiece 8 longitudinally. A side plate 5 is fixed on the side of the second pressure plate 42 to form a surface contact with the side of the workpiece 8, and the workpiece 8 is laterally positioned by the side plate 5.

[0017] Furthermore, in order to ensure that the side plate 5 and the second pressure plate 42 are reliably fitted, a T-shaped block 51 is fixed on the side of the side plate 5 near the second pressure plate 42. A T-shaped groove 421 is provided on the second pressure plate 42 to be inserted and connected with the T-shaped block 51 in the longitudinal direction.

[0018] Furthermore, in order to stably connect the side plate 5 and the second pressure plate 42, the side plate 5 and the second pressure plate 42 are fixed by bolts; specifically, the side plate 5 is provided with a connecting hole, and the second pressure plate 42 is provided with a threaded hole. After the bolt passes through the connecting hole, it is screwed and tightened with the second pressure plate 42.

[0019] Furthermore, two anti-foolproof blocks 6 corresponding to the workpiece 8 are fixed on the base plate 1, and a positioning pin 7 corresponding to the positioning groove 81 is also fixed on the base plate 1. In this embodiment, the two anti-foolproof blocks 6 achieve the purpose of anti-foolproofing from the bottom and side of the workpiece 8, respectively, and also play a lateral limiting role while preventing fooling.

[0020] Furthermore, the first clamping claw 3 includes a first hydraulic cylinder 31 and a first clamping plate 32. The first clamping plate 32 and the support block 2 correspond vertically to clamp the workpiece 8 longitudinally. The clamping position of the first clamping plate 32 matches the clamping surface of the workpiece 8.

[0021] Furthermore, the base plate 1 is provided with a chip discharge port 101 and a tool setting hole 102. The chip discharge port 101 corresponds to the connecting hole 83 on the workpiece 8 and is used to quickly discharge chips when the connecting hole 83 is opened. The tool setting hole 102 determines the milling cutter machining position before the connecting hole 83 is opened, thereby reducing machining errors.

[0022] The working principle and usage process of this utility model: When the No. 1 pressure claw 3 and the No. 2 pressure claw 4 are in the open state, the No. 1 pressure plate 32 and the No. 2 pressure plate 42 are in the upward flip state. At this time, the workpiece 8 is placed on the base plate 1. The placement position of the workpiece 8 is determined by the action of the two anti-fooling blocks 6, and the placement position is determined by the action of the positioning pin 7. After the workpiece 8 is accurately placed, it is also supported by 4 and the support block 2. Start hydraulic cylinder 31 and pressure plate 42. Pressure plate 32 and support block 2 are aligned vertically to clamp workpiece 8. Pressure plate 42 and support block 2 are also aligned vertically to clamp workpiece 8. At this time, side plate 5 flips down to the side of workpiece 8 with pressure plate 42. The inner side of side plate 5 contacts the end face of workpiece 8, achieving synchronous positioning in the longitudinal and transverse directions. The side plate 5 is connected by inserting a T-shaped block 51 into a T-shaped groove 421 and then fixed to the second pressure plate 42 with bolts.

[0023] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A valve body positioning fixture, comprising a base plate (1), characterized in that: Four support blocks (2) are fixedly installed on the base plate (1). A first pressure claw (3) and a second pressure claw (4) are also installed on the base plate (1) in a diagonal arrangement. The two sets of first pressure claws (3) and second pressure claws (4) correspond to the support blocks (2). The second pressure claw (4) includes a second hydraulic cylinder (41) and a second pressure plate (42). The second pressure plate (42) and the support block (2) are vertically aligned to clamp the workpiece (8) longitudinally. The second pressure plate (42) has a side plate (5) fixed on its side to form a surface contact with the side of the workpiece (8). The workpiece (8) is laterally positioned by the side plate (5).

2. The valve body positioning fixture according to claim 1, characterized in that: A T-shaped block (51) is fixed on the side plate (5) near the second pressure plate (42). A T-shaped groove (421) is provided on the second pressure plate (42) to be inserted into the T-shaped block (51) in the longitudinal direction.

3. The valve body positioning fixture according to claim 1, characterized in that: The side plate (5) and the second pressure plate (42) are fixed by bolts.

4. The valve body positioning fixture according to claim 1, characterized in that: Two anti-foolproof blocks (6) corresponding to the workpiece (8) are fixed on the base plate (1), and a positioning pin (7) corresponding to the positioning groove (81) is also fixed on the base plate (1).

5. The valve body positioning fixture according to claim 1, characterized in that: The first clamping claw (3) includes a first hydraulic cylinder (31) and a first pressure plate (32). The first pressure plate (32) and the support block (2) are vertically aligned to clamp the workpiece (8) longitudinally.

6. The valve body positioning fixture according to claim 1, characterized in that: The base plate (1) is provided with a chip discharge port (101) and a tool setting hole (102), and the chip discharge port (101) corresponds to the connecting hole (83) on the workpiece (8).

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