Ball valve polishing machining device

Abstract

The ball valve polishing machining device comprises a machine body, an expanding and clamping rotary table and a polishing machining structure, the polishing machining structure comprises an electric push rod, a supporting table and a lantern ring, when the electric push rod pushes a piston rod, liquid in a hydraulic hole channel drives an impeller to rotate through a one-way output liquid channel, and a reciprocating lead screw is driven to make a polishing wheel do centrifugal movement; a lead screw box of an annular array on the outer ring surface of a lantern ring is linked with a grinding wheel and matched with rotation of an expanding and clamping rotary table, the spherical surface of the ball valve can be efficiently ground in all directions, a contact type probe sensor is flush with the grinding surface of the grinding wheel, the detection spherical surface can be covered, and problem area machining can be assisted; the device solves the problem that a traditional device cannot synchronously adjust the grinding radius, the machining period is shortened, the operation complexity and the labor cost are reduced, and the grinding efficiency, the quality consistency and the surface machining precision are improved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, in particular to a ball valve grinding processing device. Background Art

[0002] With the rapid development of industries such as petroleum, chemical, energy, and water supply and drainage, ball valves, as core components of fluid control, have seen their usage scenarios continuously expand and market demand continue to grow. At the same time, the in-depth promotion of Industry 4.0 and intelligent manufacturing concepts has prompted the manufacturing industry to transform and upgrade towards automation, digitalization, and intelligence. In order to meet the needs of large-scale production, improve the surface processing accuracy and quality consistency of ball valves, and ensure the safe and stable operation of fluid systems, the research and development of professional and efficient ball valve grinding and processing equipment has become an important direction for optimizing ball valve production processes and promoting technological innovation in the valve manufacturing industry, helping companies improve production efficiency and product competitiveness in the fierce market competition.

[0003] At present, the mainstream ball valve grinding processing equipment on the market generally has technical limitations. Its grinding motion trajectory can only perform surface grinding within a preset radius. Since the equipment lacks an adaptive adjustment mechanism, it cannot adjust the grinding radius in real time according to the change of the spherical curvature of the ball valve. As a result, when processing the spherical surface of the ball valve, not only is the processing cycle of a single batch of products relatively long, but the operation complexity and manual intervention cost are also high, which has become a technical bottleneck restricting the efficient production of ball valves.

[0004] Therefore, a ball valve grinding device is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a ball valve grinding device to solve the problem in the background art that the ball valve grinding device cannot synchronously change the grinding radius.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a ball valve grinding processing device, comprising: body; The expansion and clamping turntable is connected to the processing table of the machine body by bolts; The grinding processing structure is also connected to the processing table of the machine body by bolts and is located above the expansion and clamping turntable; Wherein, the grinding processing structure includes an electric push rod, which is fixedly arranged on the upper surface of the support platform, and the output of the electric push rod is inserted into the interior of the support platform and fixed with a piston rod with a sliding seal arranged inside the support platform, and the piston end of the piston rod is inserted into the interior of the hydraulic channel with a sliding seal, and the hydraulic channel is opened at the bottom of the interior of the support platform, and a one-way output liquid channel is opened in the interior of the support platform from the lower end of the hydraulic channel to the rear; The open end of the one-way output fluid channel is connected to the input end of the driving fluid channel opened inside the collar by a matching pipeline. A plurality of screw boxes are fixed to the outer ring surface of the collar along an axial ring array, and reciprocating screws are arranged inside the screw boxes in cooperation with the bearing assembly for rotation. One of the axial ends of the reciprocating screws will extend and penetrate into the driving fluid channel inside the collar, and be fixed to the impeller inside the driving fluid channel. A driving seat is provided on the reciprocating screws inside the screw box, and the driving seat will be constrained by the screw box and then perform reciprocating linear motion along the open slide groove opened inside the screw box. The upper surface of the driving seat passes through the screw box and is fixed to a mounting rod with adjustment capability, and one end of the mounting rod is connected to the grinding motor and the contact probe sensor by a matching bolt.

[0007] Preferably, the support is connected to the processing table of the machine body by bolts and is located on the right side of the expansion and clamping turntable. A lifting seat is fixedly provided above the side of the piston rod body, and the lifting seat performs lifting and lowering movements along the front surface of the support according to the constraint slide groove opened on the front side of the support. A connecting bracket is fixedly provided on the side of the lifting seat close to the expansion and clamping turntable.

[0008] Preferably, a one-way valve opening to the outside of the support is installed inside the one-way output liquid channel.

[0009] Preferably, a circulation channel of equal size is opened inside the support platform at the front side of the hydraulic channel, and a circulation fluid channel is opened from the lower inner wall of the circulation channel through the hydraulic channel, and a one-way valve open to the inside of the hydraulic channel is installed inside the circulation fluid channel. A return fluid channel is opened from the lower inner wall of the circulation channel through the front side of the support platform, and a one-way valve open to the inside of the circulation channel is installed inside the return fluid channel.

[0010] Preferably, the open end of the reflux fluid channel is connected to the output end of the driving fluid channel through a matching pipeline.

[0011] Preferably, the side of the collar close to the support is fixed to the connecting bracket, and is thereby driven along with the lifting seat by the traction of the electric push rod. After the collar is fixed to the connecting bracket, it is suspended directly above the expanding and clamping turntable.

[0012] Preferably, at least one grinding motor is provided, and the shaft end of the grinding motor is connected to a grinding wheel through a coupling, and one contact probe sensor is provided, and the probe end is flush with the grinding surface of the grinding wheel.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention sets a grinding processing structure. When the electric push rod pushes the piston rod downward, the liquid in the hydraulic channel flows to the driving channel through the one-way output liquid channel, impacting the impeller to drive the reciprocating screw to rotate, so that the driving seat drives the grinding wheel to move centrifugally, thereby realizing adaptive adjustment of the grinding radius as the curvature of the ball valve spherical surface changes, solving the problem that the traditional device cannot synchronously change the grinding radius, shortening the processing cycle of a single batch of products, reducing operation complexity and manual intervention costs. At the same time, by arranging multiple screw boxes in an annular array on the outer annular surface of the collar, the reciprocating screw in each screw box is linked with the impeller in the driving liquid channel, so that multiple grinding wheels can grind the spherical surface of the ball valve at the same time, and cooperate with the continuous rotation of the expansion and clamping turntable to achieve all-round and efficient grinding of the ball valve, thereby improving the grinding efficiency and quality consistency. 2. The present invention installs the contact probe sensor flush with the grinding surface of the grinding wheel. When grinding the spherical surface of the ball valve, it can achieve synchronous position adjustment with the grinding motor and the grinding wheel, ensuring that the probe probe always points to the polished spherical surface at a specified detection distance during the entire grinding process. It can achieve coverage detection of the entire spherical surface of the ball valve. At the same time, it is convenient for technicians to re-grind or fine-process the problem areas, thereby ensuring the surface processing accuracy of the ball valve and providing a guarantee for the safe and stable operation of the fluid system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an overall structural view of the present invention; Figure 2 It is an overall cross-sectional view of the present invention; Figure 3 A top view of the entire present invention; Figure 4 A top view of the entire present invention; Figure 5 It is a top view of the entire invention.

[0015] In the picture: 1. Body; 2. Expanding and clamping turntable; 3. Grinding and processing structure; 31. Electric push rod; 311. Piston rod; 312. Lifting seat; 313. Connecting bracket; 32. Support platform; 321. Hydraulic channel; 322. One-way output channel; 323. Circulation channel; 324. Circulation channel; 325. Reflux channel; 33. Ring; 331. Drive fluid channel; 332. Impeller; 333. Reciprocating screw; 334. Screw box; 335. Drive seat; 336. Mounting rod; 337. Grinding motor; 338. Grinding wheel; 339. Contact probe sensor. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figures 1 to 5 The present invention provides a technical solution for a ball valve grinding device: A ball valve grinding device, comprising: The body 1, as the basic structure of the equipment, plays the role of controlling, stabilizing and carrying the entire equipment; The expansion and clamping turntable 2 is connected to the processing table of the machine body 1 by bolts, and has the ability to perform internal and external clamping and rotation driving on the workpiece. The grinding structure 3 is also connected to the processing table of the body 1 by bolts and is located above the expansion and clamping turntable 2, and is used for grinding the ball surface of the ball valve; The cam 314 is provided with a screw thread on the top of the workbench 32, and the cam 315 is provided with a screw thread on the top of the workbench 32, and the cam 316 is provided with a screw thread on the top of the workbench 32, and the cam 317 is provided with a screw thread on the top of the workbench 32, and the cam 318 is provided with a screw thread on the top of the workbench 32, and the cam 319 is provided with a screw thread on the top of the workbench 32, and the cam 319 is provided with a screw thread on the top of the workbench 32, and the cam 319 is provided with a screw thread on the top of the workbench 32, and the cam 319 is provided with a screw thread on the top of the workbench 32, and the cam 319 is provided with a screw thread on the top of the workbench 32, and the cam 319 is provided with a screw thread on the top of the workbench 32, and the cam 319 is provided with a screw thread on the top of the workbench 32 Below the interior of the support 32, a one-way output fluid channel 322 is provided inside the support 32, extending rearward from the lower end of the hydraulic channel 321. A one-way output fluid channel 322 is installed inside the one-way output fluid channel 322, which is open to the outside of the support 32. A circulation channel 323 of equal size is provided inside the support 32, in front of the hydraulic channel 321. A circulation fluid channel 324 is provided below the inner wall of the circulation channel 323, extending toward the hydraulic channel 321. A one-way valve is installed inside the circulation fluid channel 324, which is open to the inside of the hydraulic channel 321. A return fluid channel 325 is provided inside the support 32, extending from the inner wall of the circulation channel 323 toward the front side of the support 32. A one-way valve is installed inside the return fluid channel 325, which is open to the inside of the circulation channel 323. The open ends of the one-way output fluid channel 322 and the reflux fluid channel 325 are respectively connected with the input end and output end of the driving fluid channel 331 through the pipeline. The driving fluid channel 331 is opened inside the collar 33 and is C-shaped. The collar 33 is fixed to the connecting bracket 313 on the side close to the support 32, and is driven by the electric push rod 31 along the lifting seat 312. After the collar 33 is fixed to the connecting bracket 313, it is suspended directly above the expansion and clamping turntable 2, and a plurality of screw boxes 334 are fixed to the outer ring surface of the collar 33 along the axial ring array, and the interior of these screw boxes 334 are all equipped with reciprocating screws 333 for rotation with the bearing assembly. One of the axial ends of the reciprocating screws 333 will extend and penetrate into the driving fluid channel 331 inside the collar 33, and be fixed to the impeller 332 inside the driving fluid channel 331, and be fixed in the safety liquid After entering the driving fluid channel 331, it is driven by the flow of the safety liquid to rotate. The reciprocating screw 333 inside the screw box 334 is driven by a drive seat 335, and the drive seat 335 will be constrained by the screw box 334 and then perform reciprocating linear motion along the open slide groove opened inside the screw box 334. The upper surface of the drive seat 335 passes through the screw box 334 and is fixed to the mounting rod 336 with adjustment capability, and one end of the mounting rod 336 is connected to the grinding motor 337 with a bolt. There is at least one grinding motor 337, and the shaft end of the grinding motor 337 is connected to the grinding wheel 338 with a coupling, and the grinding wheel 338 has the ability to deflect. The angle of the grinding wheel 338 is automatically adjusted according to the spherical surface of the ball valve to be polished to ensure that the grinding wheel 338 is in stable contact with the spherical surface of the ball valve.

[0018] The ball valve is put on the clamping part of the expansion and clamping turntable 2. The clamping part clamps the ball valve in the valve hole by expanding outward. The expansion and clamping turntable 2 is started to push the ball valve to the center of the collar 33 and contact the grinding wheel 338. Then the grinding motor 337 is started. At the same time, the expansion and clamping turntable 2 drives the ball valve to rotate around the axis to complete the grinding of the upper edge of the spherical surface. After the ball valve rotates one circle, the electric push rod 31 is started to push the piston rod 311 downward, driving the collar 33 to descend. At this time, the liquid in the hydraulic channel 321 is squeezed and the ball valve is polished. The one-way output liquid channel 322 flows to the driving liquid channel 331, impacting the driving impeller 332 to make it rotate, and then driving the reciprocating screw 333, so that the driving seat 335 drives the grinding motor 337 and the grinding wheel 338 to move in the centrifugal direction, thereby achieving adaptation and adjustment with the spherical surface of the ball valve. Under the continuous push of the electric push rod 31, the grinding wheel 338 completes the centrifugal and then near-centrifugal grinding according to the spherical surface. During the whole process, the expansion and clamping turntable 2 continues to rotate, cooperating with the grinding structure to achieve all-round and efficient grinding of the ball valve.

[0019] In summary, through the setting of the grinding processing structure 3, when the electric push rod 31 pushes the piston rod 311 downward, the liquid in the hydraulic channel 321 flows to the driving liquid channel 331 through the one-way output liquid channel 322, and the impact impeller 332 drives the reciprocating screw 333 to rotate, so that the driving seat 335 drives the grinding wheel 338 to move centrifugally, thereby realizing adaptive adjustment of the grinding radius as the curvature of the ball valve spherical surface changes, solving the problem that the traditional device cannot synchronously change the grinding radius, shortening the single batch product processing cycle, reducing operation complexity and manual intervention cost. At the same time, by arranging multiple screw boxes 334 in an annular array on the outer ring surface of the ring 33, the reciprocating screw 333 in each screw box 334 is linked with the impeller 332 in the driving liquid channel 331, so that multiple grinding wheels 338 can grind the ball surface of the ball valve at the same time, and cooperate with the continuous rotation of the expansion and clamping turntable 2 to achieve all-round and efficient grinding of the ball valve, improving grinding efficiency and quality consistency.

[0020] As an embodiment of the present invention, Figures 1 to 4 As shown, one end of the mounting rod 336 is connected to the contact probe sensor 339 with a bolt. The contact probe sensor 339 is provided with one probe end, and the probe end is flush with the grinding surface of the grinding wheel 338.

[0021] During operation, the contact probe sensor 339 is installed flush with the grinding surface of the grinding wheel 338 and works based on the principle of physical contact measurement. When grinding the spherical surface of the ball valve, the probe contacts the spherical surface. When the curvature of the spherical surface changes, the probe displacement is converted into an electrical signal through the internal conversion mechanism of the sensor and fed back to the control system. Based on the signal analysis results, the technicians re-grind or fine-process the problem area of ​​the ball valve.

[0022] To sum up, by installing the contact probe sensor 339 flush with the polishing surface of the polishing wheel 338, when polishing the spherical surface of the ball valve, synchronous position adjustment with the polishing motor 337 and the polishing wheel 338 can be achieved, ensuring that the probe probe always points to the polished spherical surface at the specified detection distance during the entire polishing process, and coverage detection of the entire spherical surface of the ball valve can be achieved. At the same time, it is convenient for technicians to re-polish or fine-process the problem areas, thereby ensuring the surface processing accuracy of the ball valve and providing a guarantee for the safe and stable operation of the fluid system.

[0023] Working principle: When grinding the ball valve, first put the ball valve on the clamping component of the expansion and clamping turntable 2, then start the clamping component of the expansion and clamping turntable 2 to firmly clamp the ball valve in the valve hole by expanding and supporting it outward through the mechanical structure, then start the expansion and clamping turntable 2, the expansion and clamping turntable 2 will push the clamped ball valve to the center position of the collar 33 and contact the grinding wheel 338, then the grinding motor 337 is started, and at the same time, the expansion and clamping turntable 2 will cooperate with the clamping component to drive the ball valve to rotate around its own axis, so that the upper edge of the spherical surface of the ball valve can be ground. After the ball valve rotates for at least one circle driven by the expansion and clamping turntable 2, the electric push rod 31 is started, converting electrical energy into mechanical energy, and pushing the piston rod 311 downward The ball valve is moved at a fixed distance (the moving distance is set according to the grinding radius of the grinding wheel 338 to ensure that the ball valve can be fully ground). Since the lifting seat 312 connected to the piston rod 311 is connected to the collar 33 through the connecting bracket 313, the collar 33 is lowered synchronously as a whole. In the hydraulic system of the electric push rod 31, when the piston rod 311 moves downward, the liquid in the hydraulic channel 321 is squeezed. Under the action of the pressure difference, it flows to the driving liquid channel 331 through the one-way output liquid channel 322. The one-way valve structure in the one-way output liquid channel 322 ensures that the liquid can only flow in one direction to prevent backflow. After the liquid flows into the driving liquid channel 331, it impacts the driving impeller 332, and the driving impeller 332 is driven by the liquid. The cam 335 is engaged with the reciprocating screw 333 by a threaded joint, and when the reciprocating screw 333 rotates, the cam 335 is driven by the reciprocating screw 333 to move in the centrifugal direction, thereby driving the grinding motor 337 and the grinding wheel 338 fixed on the driving seat 335 to move in the centrifugal direction. In this way, the grinding motor 337 and the grinding wheel 338 can move in the centrifugal direction after the ring 33 moves down. Synchronous adaptive adjustment ensures that the grinding wheel 338 is always in contact with the ball surface of the ball valve at a predetermined pressure. During the above process, the grinding motor 337 and the grinding wheel 338 will perform a centrifugal and then near-centrifugal grinding operation according to the spherical surface of the ball valve under the continuous downward push of the electric push rod 31 at a fixed distance, thereby realizing adaptive adjustment of the grinding radius of the spherical surface of the ball valve, ensuring that the grinding wheel 338 is always in stable contact with the spherical surface of the ball valve during the entire grinding process, ensuring the consistency and efficiency of the grinding effect. During the entire grinding process, the expanding and clamping turntable 2 continues to rotate, cooperating with the grinding action of the grinding processing structure 3, so that the grinding wheel 338 can grind different parts of the ball valve, realizing all-round grinding, and improving the grinding efficiency and quality; At the same time, the contact probe sensor 339 is installed flush with the grinding surface of the grinding wheel 338. When the grinding motor 337 and the grinding wheel 338 perform centrifugal and then approximate grinding operations along the spherical surface of the ball valve, the contact probe sensor 339 will also be adjusted synchronously so that the probe always points to the ball valve at a specified distance. The working principle of the contact probe sensor 339 is based on physical contact measurement. When the grinding wheel 338 grinds the spherical surface of the ball valve, the probe of the contact probe sensor 339 contacts the spherical surface of the ball valve. As the grinding progresses, if the curvature of the spherical surface of the ball valve changes, the probe will be displaced due to the change in contact position. This displacement will be converted into an electrical signal through the conversion mechanism inside the sensor, and then fed back to the control system. After receiving the feedback signal, the control system analyzes and processes the signal. The technicians can re-grind the problem area of ​​the ball valve or perform further finishing operations based on the feedback.

[0024] It should be noted that the expansion and clamping turntable 2 is an existing self-rotating clamping fixture, which will not be described in detail in this application; the contact probe sensor 339 can be a contact spherical detection sensor such as a suitable three-coordinate measuring machine and a profilometer.

[0025] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A ball valve grinding device, comprising: Body (1); The expansion and clamping turntable (2) is connected to the processing table of the machine body (1) by bolts, and is characterized by: The grinding processing structure (3) is also connected to the processing table of the machine body (1) by bolts and is located above the expansion and clamping turntable (2); The grinding structure (3) includes an electric push rod (31), which is fixedly arranged on the upper surface of the support (32), and the output of the electric push rod (31) is inserted into the interior of the support (32) and fixed to the piston rod (311) which is slidingly sealed and arranged inside the support (32). The piston end of the piston rod (311) is slidingly sealed and inserted into the interior of the hydraulic channel (321), and the hydraulic channel (321) is opened below the interior of the support (32). A one-way output liquid channel (322) is opened inside the support (32) from the lower end of the hydraulic channel (321) to the rear; The open end of the one-way output fluid channel (322) is connected to the input end of the driving fluid channel (331) provided inside the collar (33) through a pipeline. A plurality of screw boxes (334) are fixed to the outer ring surface of the collar (33) in an axial annular array, and the interiors of the screw boxes (334) are all provided with reciprocating screws (333) that are rotated in conjunction with the bearing assembly. One of the axial ends of the reciprocating screws (333) extends and penetrates into the driving fluid channel (331) inside the collar (33) and is connected to the impeller inside the driving fluid channel (331). (332) is fixed, and a drive seat (335) is provided on the reciprocating screw (333) inside the screw box (334), and the drive seat (335) is constrained by the screw box (334) and then performs reciprocating linear motion along the open slide groove opened inside the screw box (334). The upper surface of the drive seat (335) passes through the screw box (334) and is fixed to the mounting rod (336) with adjustment capability, and one end of the mounting rod (336) is connected to the grinding motor (337) and the contact probe sensor (339) with a bolt.

2. A ball valve grinding device according to claim 1, characterized in that: The support (32) is connected to the processing table of the machine body (1) by bolts and is located on the right side of the expansion and clamping turntable (2). A lifting seat (312) is fixedly provided above the side of the piston rod (311), and the lifting seat (312) performs lifting and lowering motion along the front surface of the support (32) according to the constraint slide groove opened on the front side of the support (32). A connecting bracket (313) is fixedly provided on the side of the lifting seat (312) close to the expansion and clamping turntable (2).

3. A ball valve grinding device according to claim 1, characterized in that: A one-way valve open to the outside of the support platform (32) is installed inside the one-way output liquid channel (322).

4. A ball valve grinding device according to claim 1, characterized in that: The support platform (32) has an equal-sized circulation channel (323) on the front side of the hydraulic channel (321), and a circulation fluid channel (324) is provided on the lower inner wall of the circulation channel (323) and is connected to the hydraulic channel (321). A one-way valve opening to the inside of the hydraulic channel (321) is installed inside the circulation fluid channel (324). The support platform (32) has a return fluid channel (325) on the lower inner wall of the circulation channel (323) and is connected to the front side of the support platform (32). A one-way valve opening to the inside of the circulation channel (323) is installed inside the return fluid channel (325).

5. A ball valve grinding device according to claim 4, characterized in that: The open end of the reflux fluid channel (325) is connected to the output end of the driving fluid channel (331) through a matching pipeline.

6. A ball valve grinding device according to claim 1, characterized in that: The collar (33) is fixed to the connecting bracket (313) on one side close to the support (32), and is driven by the electric push rod (31) along with the lifting seat (312). After being fixed to the connecting bracket (313), the collar (33) is suspended directly above the expansion and clamping turntable (2).

7. The ball valve grinding device according to claim 1, characterized in that: At least one grinding motor (337) is provided, and a grinding wheel (338) is connected to the shaft end of the grinding motor (337) through a coupling. One contact probe sensor (339) is provided, and the probe end is flush with the grinding surface of the grinding wheel (338).

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