Valve shaft end plane grinding device

Abstract

The utility model discloses a valve shaft end plane grinding device which comprises a supporting mechanism, a clamping mechanism, a grinding mechanism and a driving mechanism, the supporting mechanism comprises a moving frame and an overturning frame, one end of the overturning frame is rotationally connected with the middle of the moving frame, and the other end of the overturning frame is rotationally connected with the clamping mechanism. The other ends of the overturning frames are used for being alternately placed at the two ends of the moving frame correspondingly. The clamping mechanism is arranged on the overturning frame and used for clamping or loosening a valve shaft. The grinding mechanism is used for grinding a plane at the end part of the valve shaft; the driving mechanism is connected with the moving frame and used for driving the moving frame to move in a reciprocating mode in the horizontal plane. The utility model has the beneficial effects that in the process of grinding two planes at the end part of the valve shaft, the problem of secondary clamping of the valve shaft is avoided, so that the parallelism of the two ground planes does not deviate, and the machining precision of the planes at the end part of the valve shaft is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve production, in particular to a surface grinding device for the end of a valve shaft. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters of the transported medium (temperature, pressure, and flow). According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc.

[0003] The valve is provided with a valve shaft for controlling the opening and closing of the valve disc. Figure 1 As shown, the end of the valve shaft 100 has two mutually parallel planes 110. In the process of grinding the two planes at the end of the valve shaft using a grinding device (such as a vertical grinder disclosed in application No. 202220378194.9), the valve shaft needs to be clamped twice. After the secondary clamping, the parallelism of the two planes being ground is easily deviated, which reduces the machining accuracy of the plane at the end of the valve shaft. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned technical deficiencies and to propose a valve shaft end surface grinding device to solve the technical problem that in the prior art, during the grinding process of the two planes at the end of the valve shaft by the grinding device, the valve shaft needs to be clamped for the second time, and the secondary clamping easily leads to deviation in the parallelism of the two ground planes.

[0005] In order to achieve the above technical purpose, the technical solution of the utility model provides a valve shaft end surface grinding device, comprising:

[0006] A supporting mechanism, comprising a moving frame and a turning frame, wherein one end of the turning frame is rotatably connected to the middle of the moving frame, and the other end of the turning frame is used to be alternately placed at both ends of the moving frame;

[0007] A clamping mechanism, disposed on the flip frame, for clamping or loosening the valve shaft;

[0008] A grinding mechanism, used for grinding a flat surface on the end of the valve shaft;

[0009] The driving mechanism is connected to the moving frame and is used to drive the moving frame to move back and forth in a horizontal plane so that the end of the valve shaft approaches or moves away from the grinding mechanism.

[0010] Furthermore, the movable frame has an intermediate platform and two placement platforms, the upper surfaces of the two placement platforms are located on the same horizontal plane and are relatively arranged on both sides of the intermediate platform, one end of the flip frame is rotatably connected to the intermediate platform, and the other end of the flip frame is used to be alternately placed on the upper surfaces of the two placement platforms.

[0011] Furthermore, the flip frame is a frame of a circular structure, and the clamping mechanism includes two clamping rods and a clamping drive assembly. A plurality of clamping grooves are provided on the clamping rods and are spaced apart along the length direction thereof. The two clamping rods are relatively arranged in the flip frame up and down and are slidably connected to the flip frame. A clamping channel for the valve shaft to pass horizontally is formed between the two corresponding clamping grooves up and down. The clamping drive assembly is connected to both clamping rods and is used to drive the two clamping rods to approach each other or move away from each other so that each clamping channel can synchronously clamp or release the corresponding valve shaft.

[0012] Furthermore, when the other end of the flip frame is placed on both ends of the moving frame, the central axis of each clamping channel and the central axis of the rotating shaft of the flip frame are all located on the same horizontal plane.

[0013] Furthermore, the clamping drive assembly includes at least two driving shafts, at least two gears, a rack and a telescopic driving member, each of the driving shafts is vertically and spaced apart in the frame of the flip frame, and is rotatably connected to the flip frame, the driving shaft is provided with two sections of threads with opposite rotation directions, and the upper and lower clamping rods are provided with at least two screw holes spaced apart, and are sleeved on the driving shaft through the screw holes, the upper screw hole is screwed with the upper thread, and the lower screw hole is screwed with the lower thread, each of the gears is coaxially and fixedly sleeved on the corresponding driving shaft, the rack is slidably arranged on the flip frame and meshes with each of the gears, and the telescopic driving member is fixedly connected to one end of the rack, for driving the rack to move along the length direction of the clamping rod.

[0014] Furthermore, a slide groove extending along the length direction of the flip frame is provided on the outer side wall thereof, and the clamping drive assembly further comprises a slider, which is fixedly connected to the rack and slidably disposed in the slide groove.

[0015] Furthermore, the support mechanism also includes a horizontally placed workbench, and the movable frame is slidably arranged on the workbench.

[0016] Furthermore, the support mechanism also includes a guide rod, which is horizontally fixed above the workbench along the length direction of the movable frame. The movable frame is provided with a connecting channel, and is slidably mounted on the guide rod through the connecting channel.

[0017] Furthermore, the grinding mechanism is arranged on one side of the movable frame and is located in the middle position of the workbench. It includes a bracket, a grinding wheel and a first rotating driving member. The first rotating driving member is fixed on the bracket. The output end of the first rotating driving member is coaxially fixed to the grinding wheel for driving the grinding wheel to rotate.

[0018] Furthermore, the driving mechanism includes a screw and a second rotating driving member, the screw rotates horizontally above the workbench along the length direction of the movable frame, a threaded channel is opened on the movable frame, and the screw is sleeved on the screw through the threaded channel, the threaded channel is threadedly connected to the screw, and the output end of the second rotating driving member is coaxially fixed to one end of the screw for driving the screw to rotate.

[0019] Compared with the prior art, the beneficial effects of the utility model include: when in use, the other end of the flip frame is first placed on one end of the mobile frame, the valve shaft is clamped by the clamping mechanism, and then the driving mechanism is controlled so that the driving mechanism can drive the mobile frame to move in the horizontal plane, and the end of the valve shaft is brought close to the grinding mechanism, and then the grinding mechanism can grind one of the planes on the end of the valve shaft. After the end of the valve shaft is ground into one of the planes, the end of the valve shaft is moved away from the grinding mechanism, the flip frame is manually rotated, and the other end of the flip frame is placed on the other end of the mobile frame, so that the valve shaft can be flipped. After flipping, the end of the valve shaft is brought close to the grinding mechanism again, and then the grinding mechanism can grind another plane on the end of the valve shaft, so that two mutually parallel planes can be ground at the end of the valve shaft. In the utility model, in the process of grinding the two planes at the end of the valve shaft, the problem of secondary clamping of the valve shaft is avoided, so that the parallelism of the two ground planes will not deviate, thereby improving the processing accuracy of the plane at the end of the valve shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of an existing valve shaft;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of a valve shaft end surface grinding device provided by the utility model;

[0022] Figure 3 yes Figure 2 A top view of a valve shaft end surface grinding device;

[0023] Figure 4 yes Figure 2 A three-dimensional structural diagram of the connection relationship between a turning frame and a clamping mechanism of a valve shaft end surface grinding device;

[0024] In the figure: 100 - valve shaft, 110 - plane, 200 - support mechanism, 210 - moving frame, 211 - middle platform, 212 - placement platform, 213 - connecting channel, 214 - threaded channel, 220 - turning frame, 221 - slide groove, 230 - workbench, 240 - guide rod, 300 - clamping mechanism, 310 - clamping rod, 311 - clamping groove, 312 - clamping channel, 313 - screw hole, 320 - clamping drive assembly, 321 - drive shaft, 3211 - thread, 322 - gear, 323 - rack, 324 - telescopic drive member, 325 - slider, 400 - grinding mechanism, 410 - bracket, 420 - grinding wheel, 430 - first rotating drive member, 500 - driving mechanism, 510 - screw rod, 520 - second rotating drive member. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] The utility model provides a valve shaft end surface grinding device, the structure of which is as follows Figure 2 - Figure 4 As shown, it includes a supporting mechanism 200, a clamping mechanism 300, a grinding mechanism 400 and a driving mechanism 500, wherein the supporting mechanism 200 includes a moving frame 210 and a flip frame 220, wherein one end of the flip frame 220 is rotatably connected to the middle of the moving frame 210, and the other end of the flip frame 220 is used to be alternately placed on the two ends of the moving frame 210; the clamping mechanism 300 is arranged on the flip frame 220 to clamp or loosen the valve shaft 100; the grinding mechanism 400 is used to grind the plane 110 of the end of the valve shaft 100; the driving mechanism 500 is connected to the moving frame 210 to drive the moving frame 210 to reciprocate in the horizontal plane 110 so that the end of the valve shaft 100 is close to or away from the grinding mechanism 400.

[0027] When in use, first place the other end of the flip frame 220 on one end of the mobile frame 210, clamp the valve shaft 100 through the clamping mechanism 300, and then manipulate the driving mechanism 500 so that the driving mechanism 500 can drive the mobile frame 210 to move in the horizontal plane 110, bring the end of the valve shaft 100 close to the grinding mechanism 400, and then grind one of the planes 110 on the end of the valve shaft 100 through the grinding mechanism 400. After one of the planes 110 is ground on the end of the valve shaft 100, manipulate the driving mechanism 500 so that the driving mechanism 500 can drive the mobile frame 210 to move in the horizontal plane 110, move the end of the valve shaft 100 away from the grinding mechanism 400, and manually rotate the flip frame 220 to flip the flip frame 220. The other end of the valve shaft 100 is placed on the other end of the movable frame 210, so that the valve shaft 100 can be flipped. After flipping, the driving mechanism 500 is controlled so that the driving mechanism 500 can drive the movable frame 210 to move in the horizontal plane 110, and the end of the valve shaft 100 is brought close to the grinding mechanism 400 again. Then, the grinding mechanism 400 can grind another plane 110 on the end of the valve shaft 100, so that two parallel planes 110 can be ground at the end of the valve shaft 100. In the utility model, during the grinding of the two planes 110 at the end of the valve shaft 100, the problem of secondary clamping of the valve shaft 100 is avoided, so that the parallelism of the two ground planes 110 will not deviate, thereby improving the machining accuracy of the plane 110 at the end of the valve shaft 100.

[0028] As a preferred embodiment, please refer to Figure 2 The movable frame 210 has an intermediate platform 211 and two placement platforms 212. The upper surfaces of the two placement platforms 212 are both located on the same horizontal plane 110 and are relatively arranged on both sides of the intermediate platform 211. One end of the flip frame 220 is rotatably connected to the intermediate platform 211, and the other end of the flip frame 220 is used to be alternately placed on the upper surfaces of the two placement platforms 212. When the other ends of the flip frame 220 are respectively placed on the upper surfaces of the two placement platforms 212, the upper and lower surfaces of the flip frame 220 will be swapped to achieve flipping. The upper surfaces of the two placement platforms 212 are both located on the same horizontal plane 110, so that the flip frame 220 after flipping can be in the same horizontal plane 110 as the flip frame 220 before flipping.

[0029] As a preferred embodiment, please refer to Figure 4The flip frame 220 is a frame of a circular structure, and the clamping mechanism 300 includes two clamping rods 310 and a clamping drive assembly 320. A plurality of clamping grooves 311 are provided on the clamping rods 310 and are spaced apart along the length direction thereof. The two clamping rods 310 are relatively arranged in the flip frame 220 up and down, and are slidably connected to the flip frame 220. A clamping channel 312 for the valve shaft 100 to pass horizontally is formed between the two corresponding clamping grooves 311 up and down, and the clamping drive assembly 320 is connected to both the clamping rods 310, and is used to drive the two clamping rods 310 to approach each other or move away from each other, so that each clamping channel 312 can synchronously clamp or release the corresponding valve shaft 100, so as to achieve the clamping of multiple valve shafts 100, thereby improving the processing efficiency of the valve shaft 100.

[0030] As a preferred embodiment, please refer to Figure 2 and Figure 4 When the other end of the flip frame 220 is placed at both ends of the moving frame 210, the central axis of each clamping channel 312 and the central axis of the rotating axis of the flip frame 220 are all located on the same horizontal plane 110, so that each valve shaft 100 before flipping and each valve shaft 100 after flipping are all located in the same horizontal plane 110, ensuring that the depths of the two ground planes 110 are the same.

[0031] As a preferred embodiment, please refer to Figure 4The clamping drive assembly 320 includes at least two driving shafts 321, at least two gears 322, a rack 323 and a telescopic driving member 324. Each of the driving shafts 321 is vertically and spaced apart in the frame of the flip frame 220, and is rotatably connected to the flip frame 220. The driving shaft 321 is provided with two sections of threads 3211 with opposite rotation directions. The upper and lower clamping rods 310 are spaced apart and are sleeved on the driving shaft 321 through the screw holes 313. The upper screw hole 313 is screwed with the upper thread 3211, and the lower screw hole 313 is screwed with the lower thread 3211. Each of the gears 322 is coaxially and fixedly sleeved on the corresponding driving shaft 321. The rack 323 is slidably provided on the flip frame 220 and meshes with each of the gears 322. The toothed wheel 324 is fixedly connected to one end of the rack 323 and is used to drive the rack 323 to move along the length direction of the clamping rod 310. By manipulating the telescopic driving member 324, the telescopic driving member 324 can drive the rack 323 to move forward or reversely along the length direction of the clamping rod 310. According to the transmission principle of the rack 323 and the gear 322, each gear 322 will rotate, thereby driving each driving shaft 321 to rotate. Since two sections of threads 3211 with opposite rotation directions are provided on the driving shaft 321, and the screw hole 313 on the upper clamping rod 310 is screwed with the thread 3211 located at the top, and the screw hole 313 on the lower clamping rod 310 is screwed with the thread 3211 located at the bottom, the two clamping rods 310 are moved closer to each other or away from each other, thereby achieving the action of clamping or loosening the valve shaft 100.

[0032] As a preferred embodiment, please refer to Figure 4 A slide groove 221 extending along the length direction of the flip frame 220 is provided on the outer side wall thereof. The clamping drive assembly 320 also includes a slider 325. The slider 325 is fixedly connected to the rack 323 and is slidably disposed in the slide groove 221. The movement of the rack 323 can be guided by the connection between the slider 325 and the slide groove 221.

[0033] As a preferred embodiment, please refer to Figure 2 The support mechanism 200 also includes a horizontally placed workbench 230 , and the movable frame 210 is slidably disposed on the workbench 230 . The movable frame 210 can be supported by the workbench 230 so that the movable frame 210 can move within the horizontal plane 110 .

[0034] As a preferred embodiment, please refer to Figure 2The support mechanism 200 also includes a guide rod 240, and the guide rod 240 is horizontally fixed above the workbench 230 along the length direction of the movable frame 210. A connecting channel 213 is opened on the movable frame 210, and the movable frame 210 is slidably mounted on the guide rod 240 through the connecting channel 213. The movement of the movable frame 210 can be guided by the guide rod 240, and cooperates with the driving mechanism 500, so that the movable frame 210 can reciprocate along its own length direction, so that the grinding mechanism 400 can grind the surface 110 on the end of each valve shaft 100.

[0035] As a preferred embodiment, please refer to Figure 2 The grinding mechanism 400 is arranged on one side of the movable frame 210 and is located in the middle position of the workbench 230. It includes a bracket 410, a grinding wheel 420 and a first rotating driving member 430. The first rotating driving member 430 is fixed on the bracket 410. The output end of the first rotating driving member 430 is coaxially fixed to the grinding wheel 420 for driving the grinding wheel 420 to rotate. By manipulating the first rotating driving member 430, the first rotating driving member 430 can drive the grinding wheel 420 to rotate. The grinding surface 110 at the end of the valve shaft 100 can be processed by the rotation of the grinding wheel 420.

[0036] As a preferred embodiment, please refer to Figure 2 The driving mechanism 500 includes a screw rod 510 and a second rotating driving member 520. The screw rod 510 rotates horizontally above the workbench 230 along the length direction of the moving frame 210. A threaded channel 214 is provided on the moving frame 210, and the screw rod 510 is sleeved on the screw rod 510 via the threaded channel 214. The threaded channel 214 is screwed to the screw rod 510. The output end of the second rotating driving member 520 is coaxially fixed to one end of the screw rod 510 for driving the screw rod 510 to rotate. By controlling the second rotating driving member 520 to rotate forward or reverse, the second rotating driving member 520 can drive the screw rod 510 to rotate forward or reverse. Since the moving frame 210 is screwed to the screw rod 510 via the threaded channel 214, and the guide rod 240 can limit the moving frame 210, the moving frame 210 can reciprocate on the workbench 230.

[0037] In order to better understand the present invention, the following Figure 1 - Figure 4 The working principle of the technical solution of the utility model is described in detail:

[0038] When in use, first place the other end of the flip frame 220 on the upper surface of one of the placement platforms 212, and place each valve shaft 100 in the corresponding clamping channel 312, and manipulate the telescopic drive member 324 so that the telescopic drive member 324 can drive the rack 323 to move forward along the length direction of the clamping rod 310. According to the transmission principle of the rack 323 and the gear 322, each gear 322 will rotate forward, thereby driving each drive shaft 321 to rotate forward. Since the drive shaft 321 is provided with two sections of threads with opposite rotation directions, 3211, and the screw hole 313 on the upper clamping rod 310 is screwed with the thread 3211 on the upper side, and the screw hole 313 on the lower clamping rod 310 is screwed with the thread 3211 on the lower side, so that the two clamping rods 310 can be close to each other to clamp the valve shaft 100, and then the second rotating driving member 520 is controlled to rotate forward, so that the second rotating driving member 520 can drive the screw rod 510 to rotate forward. Since the movable frame 210 is screwed with the screw rod 510 via the threaded channel 214, and the guide rod The movable frame 210 can be limited by the grinding wheel 420 so that the movable frame 210 can move on the workbench 230. The ends of the valve shafts 100 are sequentially close to the grinding wheel 420. The grinding wheel 420 is rotated to grind one of the planes 110 on the ends of the valve shafts 100. After the ends of the valve shafts 100 are grinded to form one of the planes 110, the ends of the valve shafts 100 are moved away from the grinding wheel 420. The flip frame 220 is manually rotated to place the other end of the flip frame 220 on the upper surface of another placement platform 212, so that the valve shafts 100 can be rotated. The shaft 100 is flipped, and after flipping, the end of each valve shaft 100 is brought close to the grinding wheel 420 again, and the grinding wheel 420 is rotated to grind another plane 110 on the end of the valve shaft 100, so that two mutually parallel planes 110 can be ground at the end of the valve shaft 100. In the utility model, in the process of grinding the two planes 110 at the end of the valve shaft 100, the problem of secondary clamping of the valve shaft 100 is avoided, so that the parallelism of the two ground planes 110 will not deviate, thereby improving the machining accuracy of the plane 110 at the end of the valve shaft 100.

[0039] The valve shaft end surface grinding device provided by the utility model has the following beneficial effects:

[0040] (1) It is possible to clamp multiple valve shafts 100, thereby improving the processing efficiency of the valve shafts 100;

[0041] (2) When the other end of the flip frame 220 is placed at both ends of the moving frame 210, the central axis of each clamping channel 312 and the central axis of the rotating shaft of the flip frame 220 are located on the same horizontal plane 110, so that each valve shaft 100 before flipping and each valve shaft 100 after flipping are located in the same horizontal plane 110, ensuring that the depths of the two planes 110 being ground are the same;

[0042] (3) During the grinding process of the two flat surfaces 110 at the end of the valve shaft 100, the problem of secondary clamping of the valve shaft 100 is avoided, so that the parallelism of the two ground flat surfaces 110 will not deviate, thereby improving the machining accuracy of the flat surfaces 110 at the end of the valve shaft 100.

[0043] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A valve shaft end surface grinding device, characterized in that: include: A supporting mechanism, comprising a moving frame and a turning frame, wherein one end of the turning frame is rotatably connected to the middle of the moving frame, and the other end of the turning frame is used to be alternately placed at both ends of the moving frame, and the turning frame is a frame of a round-shaped structure; A clamping mechanism is arranged on the flip frame and is used to clamp or release the valve shaft. The clamping mechanism includes two clamping rods and a clamping drive assembly. A plurality of clamping grooves are arranged on the clamping rods and spaced along the length direction thereof. The two clamping rods are arranged relatively to each other in the flip frame and are slidably connected with the flip frame. A clamping channel for the valve shaft to pass horizontally is formed between the two corresponding clamping grooves. The clamping drive assembly is connected to both clamping rods and is used to drive the two clamping rods to move closer to each other or away from each other, so that each clamping channel can synchronously clamp or release the corresponding valve shaft. A grinding mechanism, used for grinding a flat surface on the end of the valve shaft; The driving mechanism is connected to the moving frame and is used to drive the moving frame to move back and forth in a horizontal plane so that the end of the valve shaft approaches or moves away from the grinding mechanism.

2. The valve shaft end surface grinding device according to claim 1, characterized in that: The movable frame comprises an intermediate platform and two placement platforms, the upper surfaces of the two placement platforms are located on the same horizontal plane and are relatively arranged on both sides of the intermediate platform, one end of the flip frame is rotatably connected to the intermediate platform, and the other end of the flip frame is used to be alternately placed on the upper surfaces of the two placement platforms.

3. The valve shaft end surface grinding device according to claim 1, characterized in that: When the other end of the turning frame is placed on both ends of the moving frame, the central axis of each clamping channel and the central axis of the rotating shaft of the turning frame are all located on the same horizontal plane.

4. The valve shaft end surface grinding device according to claim 3, characterized in that: The clamping drive assembly includes at least two driving shafts, at least two gears, a rack and a telescopic driving member, each of the driving shafts is vertically and spaced apart in the frame of the flip frame, and is rotatably connected to the flip frame, the driving shaft is provided with two sections of threads with opposite rotation directions, and the upper and lower clamping rods are spaced apart with at least two screw holes, and are sleeved on the driving shaft through the screw holes, the upper screw hole is screwed with the upper thread, and the lower screw hole is screwed with the lower thread, each of the gears is coaxially and fixedly sleeved on the corresponding driving shaft, the rack is slidably arranged on the flip frame, and is meshed with each of the gears, and the telescopic driving member is fixedly connected to one end of the rack, and is used to drive the rack to move along the length direction of the clamping rod.

5. The valve shaft end surface grinding device according to claim 4, characterized in that: The outer side wall of the turning frame is provided with a slide groove extending along the length direction thereof. The clamping drive assembly further comprises a sliding block, which is fixedly connected to the rack and slidably disposed in the slide groove.

6. The valve shaft end surface grinding device according to claim 1, characterized in that: The supporting mechanism also includes a horizontally placed workbench, and the movable frame is slidably arranged on the workbench.

7. The valve shaft end surface grinding device according to claim 6, characterized in that: The support mechanism also includes a guide rod, which is horizontally fixed above the workbench along the length direction of the movable frame. The movable frame is provided with a connecting channel and is slidably sleeved on the guide rod through the connecting channel.

8. The valve shaft end surface grinding device according to claim 6, characterized in that: The grinding mechanism is arranged on one side of the movable frame and located in the middle position of the workbench. It includes a bracket, a grinding wheel and a first rotating driving member. The first rotating driving member is fixed on the bracket. The output end of the first rotating driving member is coaxially fixed to the grinding wheel for driving the grinding wheel to rotate.

9. The valve shaft end surface grinding device according to claim 7, characterized in that: The driving mechanism includes a screw and a second rotating driving member. The screw rotates horizontally above the workbench along the length direction of the movable frame. A threaded channel is opened on the movable frame, and the movable frame is sleeved on the screw through the threaded channel. The threaded channel is threadedly connected to the screw. The output end of the second rotating driving member is coaxially fixed to one end of the screw for driving the screw to rotate.

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