A valve body machining positioning fixture

Abstract

This utility model relates to the field of valve body processing technology, specifically a positioning fixture for internal cutting of valve bodies. It includes a mounting base, a support block fixed to the top surface of the mounting base, a rotating shaft rotatably connected to the upper end of the support block, a connecting block fixed to the outer peripheral wall of the rotating shaft, and a positioning component fixed to the end of the connecting block away from the rotating shaft. The positioning component includes a cross block with multiple limiting grooves arranged in a circular array on the cross block. A slider is slidably connected inside the limiting grooves, and a cylinder is mounted on the side wall of the slider. The outer peripheral wall of the piston rod of the cylinder is slidably connected to the slider, and a positioning catch block is fixed to the piston rod of the cylinder. A valve body is located outside the cross block. Through the multi-faceted pressure formed by the cylinder and the positioning catch block, a wrap-around clamping effect is achieved for right-angle and bent parts of the valve body, adapting to irregularly shaped valve bodies and overcoming the limitations of traditional planar clamping. This facilitates rotation of the valve body after clamping and positioning, and is suitable for internal cutting of valve bodies at different angles.

Description

Technical Field

[0001] This utility model relates to the field of valve body processing technology, and in particular to a positioning tool for internal cutting of valve body. Background Technology

[0002] In the field of internal machining of valve bodies, the stability and adaptability of positioning fixtures directly affect machining accuracy and production efficiency. As industrial pipeline systems become more complex and diversified, valve body structures have evolved from traditional single circular interfaces to irregular structures with right angles or bends, such as T-shaped, L-shaped, and cross-shaped interfaces.

[0003] According to the search, Chinese patent CN222289462U provides a valve body internal cutting and positioning device, which quickly clamps and fixes the valve body on the top surface of the worktable for rapid positioning and processing of the valve body. By clamping and fixing the two sides of the valve body to the pipe connection parts, it can prevent the valve body from loosening during processing, thereby improving not only the processing efficiency of the valve body, but also the positioning effect of the valve body.

[0004] However, during use, it was found that the device uses a fixed plane clamping method, which only clamps the valve body and the pipeline connection on both sides. It has poor adaptability to valve bodies with right angles or bends, such as T-shaped and L-shaped valve bodies, and it is difficult to achieve stable clamping in multiple directions. After clamping, it is difficult to adjust the valve body posture according to the cutting requirements. When machining complex internal cavity structures, it is necessary to disassemble and assemble the workpiece multiple times to adjust the angle, which affects the machining efficiency of cutting inside the valve body. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a positioning fixture for internal cutting of valve bodies. By using a cylinder and a positioning block to form multi-faceted pressure, it achieves wrap-around clamping of right-angle and bent parts of the valve body, adapting to irregularly shaped valve bodies, overcoming the limitations of traditional planar clamping, facilitating the rotation of the valve body after clamping and positioning, and adapting to internal cutting of valve bodies at different angles.

[0006] To solve the above technical problems, the present invention provides the following technical solution: a valve body cutting and positioning fixture, including a mounting base, a support block fixedly provided on the top surface of the mounting base, a rotating shaft rotatably connected to the upper end of the support block, a connecting block fixedly provided on the outer peripheral wall of the rotating shaft, and a positioning component fixedly provided at the end of the connecting block away from the rotating shaft;

[0007] The positioning component includes a cross block, on which multiple limiting grooves are formed in a circular array. A slider is slidably connected inside the limiting grooves. A cylinder is installed on the side wall of the slider. The outer peripheral wall of the piston rod of the cylinder is slidably connected to the slider. A positioning block is fixed on the piston rod of the cylinder.

[0008] The valve body is located on the outside of the cross block, and the outer peripheral wall of the piston rod of the cylinder and the outer wall of the positioning block abut against the outer wall of the valve body.

[0009] Preferably, a first servo motor is mounted on the upper end of the support block, and the output shaft of the first servo motor is coaxially connected to the rotating shaft.

[0010] Through the above technical solution, after the first servo motor is powered on, it drives the rotating shaft to rotate, which in turn drives the fixed connecting block and positioning component to rotate, thereby realizing the 360° angle adjustment of the cross block in the horizontal plane and rotating the valve body to a suitable internal cutting angle.

[0011] Preferably, the outer end of the cross block is provided with multiple brackets, and a lead screw is rotatably connected to the bracket. A second servo motor is respectively installed on the outer end of the bracket, and the output shaft of the second servo motor is coaxially connected to the lead screw.

[0012] Preferably, the outer peripheral wall of the end of the plurality of lead screws away from the bracket is rotatably connected to the connecting block, and the lead screws are threadedly connected to the slider.

[0013] Through the above technical solution, the second servo motor drives the lead screw to rotate. Since the lead screw is threadedly connected to the slider, the slider slides along the limit groove of the cross block, driving the cylinder and positioning block to move synchronously.

[0014] Preferably, the outer peripheral wall of the positioning block has multiple slots, which are arranged in a ring array structure.

[0015] Preferably, a plug is inserted into the slot, and a pressure block is fixed at one end of the plug.

[0016] The above technical solution involves inserting the insert block into the corresponding slot, and then using connecting bolts to pass through the insert block and connect with the positioning block via threads, thereby achieving the fixed installation of the pressure block.

[0017] Preferably, the insert block is fitted with connecting bolts, and the plurality of connecting bolts are threadedly connected to the positioning block respectively.

[0018] Preferably, the length of the pressing block is not unique.

[0019] By using the above technical solution, and by disassembling the connecting bolts and replacing the pressure block with one of suitable length, the clamping surface of the positioning block can be flexibly adapted to the contours of various valve bodies.

[0020] The beneficial effects of this utility model are:

[0021] The mounting base fixes the support block, and the rotating shaft can rotate on the upper end of the support block, driving the connecting block and positioning component to rotate, thereby adjusting the angle of the positioning component and allowing the valve body to rotate to a suitable cutting angle. The cylinder and the positioning block form multi-faceted pressure, achieving a wrap-around clamping of the right angle and bent parts of the valve body, adapting to irregularly shaped valve bodies, solving the limitations of traditional planar clamping, facilitating the rotation of the valve body after clamping and positioning, and adapting to the internal cutting processing of valve bodies at different angles.

[0022] After the first servo motor is powered on, it drives the rotating shaft to rotate, which in turn drives the fixed connecting block and positioning component to rotate, realizing the 360° angle adjustment of the cross block in the horizontal plane, so that the valve body body can be rotated to a suitable internal cutting machining angle. The second servo motor drives the lead screw to rotate. Since the lead screw is threadedly connected to the slider, the slider slides along the limiting groove of the cross block, which drives the cylinder and positioning block to move synchronously. When the piston rod of the cylinder extends, the positioning block and the outer peripheral wall of the piston rod abut against the outer wall of the valve body body. Through the ring array of multiple sets of positioning blocks forming a wrap-around clamping, stable clamping is achieved, which improves the processing efficiency.

[0023] The annular array of slots on the outer periphery of the positioning block provides a pluggable installation interface for the insert. Based on the shape characteristics of the valve body, pressure blocks of different lengths are selected, and the insert is inserted into the corresponding slot. The pressure block is fixedly installed by passing the connecting bolt through the insert and threading it with the positioning block. After installation, when the cylinder drives the positioning block to press against the valve body, the pressure block fits against the surface of the valve body, increasing the clamping contact area and enhancing the clamping effect. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a rear perspective view of the cross-shaped block structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the slider structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the positioning block structure assembly of this utility model.

[0028] In the diagram: 100, mounting base;

[0029] 200. Support block; 201. Rotating shaft; 202. Connecting block; 203. First servo motor;

[0030] 300. Positioning component; 301. Cross block; 302. Limiting groove; 303. Connecting bolt; 304. Slider; 305. Cylinder; 306. Positioning block; 307. Bracket; 308. Lead screw; 309. Second servo motor; 310. Slot; 311. Insert block; 312. Pressure block;

[0031] 400. Valve body. Detailed Implementation

[0032] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0033] Example 1: As Figure 1 , Figure 2 and Figure 3 As shown, this embodiment provides a valve body machining positioning fixture, including a mounting base 100, a support block 200 fixedly provided on the top surface of the mounting base 100, a rotating shaft 201 rotatably connected to the upper end of the support block 200, a connecting block 202 fixedly provided on the outer peripheral wall of the rotating shaft 201, and a positioning component 300 fixedly provided at the end of the connecting block 202 away from the rotating shaft 201.

[0034] The positioning component 300 includes a cross block 301. The cross block 301 has multiple limiting grooves 302 arranged in a ring array. A slider 304 is slidably connected inside the limiting groove 302. A cylinder 305 is installed on the side wall of the slider 304. The outer peripheral wall of the piston rod of the cylinder 305 is slidably connected to the slider 304. A positioning block 306 is fixed on the piston rod of the cylinder 305.

[0035] A valve body 400 is provided on the outside of the cross block 301. The outer peripheral wall of the piston rod of the cylinder 305 and the outer wall of the positioning block 306 respectively abut against the outer wall of the valve body 400.

[0036] A first servo motor 203 is installed on the upper end of the support block 200. The output shaft of the first servo motor 203 is coaxially connected to the rotating shaft 201. After the first servo motor 203 is powered on, it drives the rotating shaft 201 to rotate, which in turn drives the fixed connecting block 202 and the positioning component 300 to rotate, thereby realizing the 360° angle adjustment of the cross block 301 in the horizontal plane, so that the valve body 400 rotates to a suitable internal cutting angle.

[0037] Multiple supports 307 are provided at the outer end of the cross block 301. A lead screw 308 is rotatably connected to the support 307. A second servo motor 309 is installed at the outer end of the support 307. The output shaft of the second servo motor 309 is coaxially connected to the lead screw 308. The outer peripheral wall of the end of the multiple lead screws 308 away from the support 307 is rotatably connected to the connecting block 202. The lead screw 308 is threadedly connected to the slider 304. The second servo motor 309 drives the lead screw 308 to rotate. Since the lead screw 308 is threadedly connected to the slider 304, the slider 304 slides along the limiting groove 302 of the cross block 301, driving the cylinder 305 and the positioning block 306 to move synchronously.

[0038] Working principle: The mounting base 100 fixes the support block 200, and the rotating shaft 201 can rotate on the upper end of the support block 200, driving the connecting block 202 and the positioning component 300 to rotate, thereby realizing the angle adjustment of the positioning component 300, so that the valve body 400 can be rotated to a suitable cutting angle.

[0039] Within the limiting groove 302 on the cross block 301, the slider 304 slides along the limiting groove 302, and the piston rod is driven to move by the cylinder 305, causing the positioning block 306 to abut against the outer wall of the valve body 400. At the same time, the outer peripheral wall of the piston rod of the cylinder 305 slides and engages with the slider 304 to form a multi-faceted clamping of the valve body 400, so that the piston rod abuts against one side of the valve body 400, and the positioning block 306 abuts against the outer wall of the valve body 400 away from the cross block 301, thereby achieving stable fixation of the valve body 400. Through the multi-faceted pressure formed by the cylinder 305 and the positioning block 306, a wrap-around clamping is achieved for the right angle and bent parts of the valve body 400, which is suitable for valve bodies with irregular structures, solves the limitations of traditional planar clamping, facilitates the rotation of the valve body 400 after clamping and positioning, and is suitable for internal cutting and machining of valve bodies at different angles.

[0040] By sliding the slider 304 in the limiting groove 302, the relative position of the positioning block 306 and the piston rod of the cylinder 305 can be adjusted to adapt to valve body bodies 400 with different outer diameters, and clamping and positioning can be completed without changing the fixture.

[0041] After the first servo motor 203 is powered on, it drives the rotating shaft 201 to rotate, which in turn drives the fixed connecting block 202 and the positioning component 300 to rotate, realizing the 360° angle adjustment of the cross block 301 in the horizontal plane, so that the valve body 400 rotates to a suitable internal cutting angle.

[0042] The second servo motor 309 drives the lead screw 308 to rotate. Since the lead screw 308 is threadedly connected to the slider 304, the slider 304 slides along the limiting groove 302 of the cross block 301, driving the cylinder 305 and the positioning block 306 to move synchronously. When the piston rod of the cylinder 305 extends, the positioning block 306 and the outer peripheral wall of the piston rod abut against the outer wall of the valve body 400. The multiple sets of positioning blocks 306 in the ring array form a wrap-around clamping, achieving stable clamping and improving processing efficiency.

[0043] For valve bodies of different sizes, the second servo motor 309 controls the number of rotations of the lead screw 308 and adjusts the position of the slider 304 in the limit groove 302 so that the clamping range of the positioning block 306 adapts to the change in valve body diameter and ensures uniform clamping force.

[0044] Example 2: Figure 1 , Figure 3 and Figure 4 As shown, based on Embodiment 1, the outer peripheral wall of the positioning block 306 is provided with multiple slots 310, which are arranged in a ring array. Inserts 311 are inserted into the slots 310, and a pressure block 312 is fixed at one end of the inserts 311. The inserts 311 are inserted into the corresponding slots 310, and the pressure block 312 is fixedly installed by passing the connecting bolts 313 through the inserts 311 and threadedly connecting them to the positioning block 306.

[0045] Connecting bolts 303 are inserted into the insert block 311. Multiple connecting bolts 303 are threadedly connected to the positioning block 306. The length of the pressure block 312 is not unique. By disassembling the connecting bolts 313 and replacing the pressure block 312 with a suitable length, the clamping surface of the positioning block 306 can flexibly adapt to the contours of various valve body bodies 400.

[0046] In use, the annular array slots 310 on the outer peripheral wall of the positioning block 306 provide a pluggable installation interface for the insert block 311. According to the shape characteristics of the valve body 400, pressure blocks 312 of different lengths are selected, and the insert block 311 is inserted into the corresponding slot 310. The pressure block 312 is fixedly installed by passing through the insert block 311 and threadedly connecting it to the positioning block 306 through the connecting bolt 313. After installation, when the cylinder 305 drives the positioning block 306 to press against the valve body 400, the pressure block 312 fits against the surface of the valve body 400, which increases the clamping contact area and enhances the clamping effect.

[0047] When processing valve body bodies 400 with different shapes, by disassembling the connecting bolts 313 and replacing the pressure block 312 with a suitable length, the clamping surface of the positioning block 306 can flexibly adapt to the contours of various valve body bodies 400, ensuring that the clamping force of the pressure block 312 is evenly distributed on the surface of the valve body body 400, and reducing the damage to the outer wall of the valve body body 400 when the pressure block 312 clamps it.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A positioning fixture for machining a valve body, characterized in that, include: Mounting base (100), the top surface of the mounting base (100) is fixedly provided with a support block (200), the upper end of the support block (200) is rotatably connected with a rotating shaft (201), a connecting block (202) is fixedly provided on the outer peripheral wall of the rotating shaft (201), and a positioning component (300) is fixedly provided at the end of the connecting block (202) away from the rotating shaft (201). The positioning component (300) includes a cross block (301), and the cross block (301) has multiple limiting grooves (302) arranged in a ring array. A slider (304) is slidably connected inside the limiting groove (302). A cylinder (305) is installed on the side wall of the slider (304). The outer peripheral wall of the piston rod of the cylinder (305) is slidably connected to the slider (304). A positioning block (306) is fixed on the piston rod of the cylinder (305). The valve body (400) is provided on the outside of the cross block (301), and the outer peripheral wall of the piston rod of the cylinder (305) and the outer wall of the positioning block (306) respectively abut against the outer wall of the valve body (400).

2. The valve body machining positioning fixture as described in claim 1, characterized in that: The support block (200) is equipped with a first servo motor (203) at its upper end, and the output shaft of the first servo motor (203) is coaxially connected to the rotating shaft (201).

3. The valve body machining positioning fixture as described in claim 2, characterized in that: The outer end of the cross block (301) is provided with multiple brackets (307), and a lead screw (308) is rotatably connected to the bracket (307). A second servo motor (309) is installed on the outer end of the bracket (307), and the output shaft of the second servo motor (309) is coaxially connected to the lead screw (308).

4. The valve body machining positioning fixture as described in claim 3, characterized in that: The outer peripheral wall of one end of each of the multiple lead screws (308) away from the bracket (307) is rotatably connected to the connecting block (202), and the lead screw (308) is threadedly connected to the slider (304).

5. The valve body machining positioning fixture as described in claim 4, characterized in that: The positioning block (306) has multiple slots (310) on its outer peripheral wall, and the slots (310) are arranged in a ring array structure.

6. The valve body machining positioning fixture as described in claim 5, characterized in that: A plug (311) is inserted into the slot (310), and a pressure block (312) is fixed at one end of the plug (311).

7. The valve body machining positioning fixture as described in claim 6, characterized in that: A connecting bolt (303) is inserted into the insert block (311), and multiple connecting bolts (303) are threadedly connected to the positioning block (306).

8. The valve body machining positioning fixture as described in claim 7, characterized in that: The length of the pressure block (312) is not unique.

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