Three-dimensional arc-shaped grinding machine for ball valve body

Abstract

The invention discloses a three-dimensional arc-shaped rotating grinding machine for a ball valve body, comprising a workbench, a lifting mechanism is arranged on the workbench, a lifting plate is connected to the lifting mechanism, and an unfolding mechanism is arranged at the lower end of the lifting plate; a moving mechanism is arranged on the workbench, and a clamping mechanism is arranged on the moving mechanism; the unfolding mechanism comprises a first mounting seat and a mounting frame, a driving mechanism is arranged on the mounting frame, a rotating shaft is connected to the output end of the driving mechanism, a center block is rotatably connected to the rotating shaft, and a first connecting rod is connected to the center block; a plurality of sleeves are distributed on the circumference of the side of the center block, a telescopic rod is connected inside the sleeve, a connecting block is connected to the outer end of the telescopic rod, and second connecting rods are rotatably connected to the two sides of the connecting block; a grinding petal is connected between the second connecting rods, and a grinding block is arranged on the grinding petal; a crank structure is arranged on the rotating shaft; and a first motor is fixedly connected to the lower part of the lifting plate. The invention can grind ball valves of various specifications, is simple to operate, and has strong applicability.

Description

Technical Field

[0001] The invention relates to a three-dimensional arc-shaped rotating grinder for a ball valve body, belonging to the technical field of grinders. Background Art

[0002] The main feature of the ball valve is that it has a compact structure and is suitable for general working media such as water, solvents, acids and natural gas, as well as media with harsh working conditions, such as oxygen, hydrogen peroxide, methane and ethylene. It is suitable for frequent operation, quick and easy opening and closing. It has low fluid resistance. It has a simple structure, relatively small size, light weight and is easy to maintain. It has good sealing performance and is not restricted by the installation direction, and the flow direction of the medium can be arbitrary. The ball is a key component as the pressure control opening and closing component of the ball valve, and its processing and grinding have always been the focus and difficulty in the production of ball valves. For hard-sealed ball valves, the spray welding process and coating process of the ball have higher requirements for the roughness and roundness of the ball.

[0003] To this end, the industry has developed a variety of related grinding equipment. For example, the Chinese utility model patent with authorization announcement number CN207710540U discloses a ball valve ball grinding machine, and specifically discloses a motor, gears, shafts, chains and a three-claw chuck. The output end of the first motor is connected to the first shaft, the first gear is fixed on the first shaft, the second gear is fixed on the second shaft, the second gear is meshed with the first gear, the second shaft is connected to the ball valve fixing sleeve, the ball valve fixing sleeve is used to fix the ball valve, the first motor drives the first shaft to rotate after being energized, and the rotation of the first shaft drives the second shaft to rotate and the second gear forms a fan along the first gear. The second axis rotates by itself through the ball valve fixing sleeve to drive the ball valve to be ground to rotate 360 ​​degrees; the output end of the second motor is connected to the fifth axis, the fifth axis is connected to the third axis through the second chain, the third axis is connected to the fourth gear through the first chain, the fourth gear is meshed with the third gear, the third gear is fixed on the fourth axis, the fifth axis is equipped with a compression spring, the fifth axis is close to the ball valve end with the second third grip chuck and pre-compressed compression spring, the second third grip chuck is connected to the second valve seat, the fourth axis is also equipped with a compression spring, the fourth axis is close to the ball valve end with the first third grip chuck and pre-compressed compression spring, the first third grip chuck is connected to the first valve seat. This type of equipment can only grind ball valves of specific specifications. When ball valves of different specifications need to be ground, it can only be solved by replacing the equipment or the corresponding chuck, which is costly and inconvenient. Summary of the invention

[0004] The purpose of the present invention is to provide a three-dimensional arc-shaped rotating grinding machine for a ball valve body. The present invention can grind ball valves of various specifications, is easy to operate, and has strong applicability.

[0005] The technical solution of the present invention is as follows: a three-dimensional arc-shaped rotating grinding machine for a ball valve body comprises a workbench, a mounting column is arranged at the rear end of the workbench, a lifting mechanism is arranged on the mounting column, a lifting plate is connected to the movable end of the lifting mechanism, and an unfolding mechanism is arranged at the lower end of the lifting plate; a moving mechanism is arranged on the workbench, and a clamping mechanism is arranged on the moving mechanism; the unfolding mechanism comprises a first mounting seat, a mounting frame is rotatably connected in the first mounting seat, a driving mechanism is arranged on the mounting frame, a rotating shaft is connected to the rotating shaft with a center block rotatably connected, a first connecting rod is connected to the center block, and the first connecting rod is connected to the mounting seat The mounting frame is fixedly connected; a plurality of sleeves are distributed on the circumference of the side of the central block, a telescopic rod is slidably connected in the sleeve, the outer end of the telescopic rod is connected to a connecting block, and the second connecting rods are rotatably connected on both sides of the connecting block; grinding petals are rotatably connected on adjacent connecting blocks and between adjacent second connecting rods, a second mounting seat is provided on the inner side of the front end of the grinding petal, and a grinding block is installed in the second mounting seat; crank structures are respectively provided on the rotating shaft and located on the front and rear sides of the central block, and the crank structure is rotatably connected to the connecting block; a first motor is fixedly connected to the lower part of the lifting plate, and the output end of the first motor is fixedly connected to the mounting frame.

[0006] The above-mentioned three-dimensional arc-shaped rotating grinding machine for the ball valve body, the driving mechanism includes a second motor fixedly connected to the mounting frame, the output end of the second motor is connected to a worm, the worm is rotatably connected to the mounting frame; a worm wheel is rotatably connected to the mounting frame, the worm wheel is connected to the worm and is externally meshed; the worm wheel is fixedly connected to the rotating shaft.

[0007] The aforementioned three-dimensional arc-shaped rotating grinding machine for the ball valve body, the crank structure includes a first crank fixedly connected to the rotating shaft, the second crank and the third crank are hinged on the upper part of the outer end of the first crank, and the third crank is located on the upper part of the second crank; the third crank is Y-shaped; the center of the third crank is fixedly connected to the rotating shaft; the other two ends of the third crank are respectively hinged to the fourth crank and the fifth crank; the outer ends of the second crank, the fourth crank and the fifth crank are respectively connected to different grinding petals.

[0008] The aforementioned three-dimensional arc-shaped rotating grinding machine for the ball valve body, the lifting mechanism includes a third mounting seat arranged at the upper end of the mounting column and a first nut block arranged on the lifting plate; a third motor is fixedly connected to the third mounting seat, and the output end of the third motor is connected to the first threaded rod through the third mounting seat, and the first threaded rod cooperates with the first nut block; a first slide rail is provided on the side of the mounting column, and the first slide rail is slidably connected to the lifting plate.

[0009] The aforementioned three-dimensional arc-shaped rotating grinding machine for the ball valve body, the moving mechanism includes a second slide rail symmetrically arranged on the workbench, a plurality of first sliders are slidably connected to the second slide rail, and a first moving platform is fixedly connected between the upper parts of the first sliders; a fourth motor is provided on the workbench, and a second threaded rod is connected to the output end of the fourth motor; a second nut block is fixedly connected to the lower part of the first moving platform, and the second nut block cooperates with the second threaded rod.

[0010] The aforementioned three-dimensional arc-shaped rotating grinding machine for the ball valve body, the first movable platform is symmetrically provided with a third slide rail, a plurality of second sliders are slidably connected to the third slide rail, and a second movable platform is fixedly connected between the upper parts of the second sliders; a fifth motor is provided on the first movable platform, and a third threaded rod is connected to the output end of the fifth motor; a third nut block is fixedly connected to the lower part of the second movable platform, and the third nut block cooperates with the third threaded rod.

[0011] The aforementioned three-dimensional arc-shaped rotating grinding machine for the ball valve body, the clamping mechanism includes a fourth mounting seat fixedly arranged on one side of the upper part of the second movable platform and a fourth slide rail symmetrically arranged on the other side of the upper part of the second movable platform; a sixth motor is fixedly connected to the outer side of the fourth mounting seat, the output end of the sixth motor is connected to a worm gear reducer, the output end of the worm gear reducer passes through the fourth mounting seat and is connected to a first rotating disk, the first rotating disk is rotatably connected to the fourth mounting seat; a first connecting cone is provided on the first rotating disk.

[0012] The aforementioned three-dimensional arc-shaped rotating grinding machine for the ball valve body, the fourth slide rail is slidably connected to a third slider, the upper part of the third slider is fixedly connected to a fifth mounting seat, the inner side of the fifth mounting seat is rotatably connected to a second rotating disk, and the second rotating disk is provided with a second connecting cone; the second movable platform is provided with a seventh motor, the output end of the seventh motor is connected to a fourth threaded rod; the lower part of the fifth mounting seat is fixedly connected to a fourth nut block, and the fourth nut block cooperates with the fourth threaded rod.

[0013] The aforementioned three-dimensional arc-shaped rotating grinding machine for the ball valve body, the second mounting seat is symmetrically provided with mounting grooves, and the grinding block is arranged in the mounting grooves; threaded holes are respectively provided on both sides of the second mounting seat, and the threaded holes are connected to the mounting grooves.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the present invention, the grinding flap is unfolded by the unfolding mechanism to adapt to the ball valves of different diameters for grinding. The unfolding mechanism provides power for the unfolding of the grinding flap through the internal driving mechanism. The center block is connected and fixed to the mounting frame by the first connecting rod. The driving mechanism drives the rotating shaft to rotate, and the rotating shaft drives the crank structure fixedly connected to it to rotate and unfold. The crank structure pushes the connecting block outward. Under the cooperation of the telescopic rod and the sleeve, the connecting block is smoothly unfolded outward. The connecting block drives the grinding flap to move outward through the second connecting rod, thereby realizing the expansion of the grinding flap, so that the grinding flap can surround the outside of the larger size ball valve. The ball valve is fixed by the clamping mechanism, and the lifting mechanism moves the grinding flap to the front of the ball valve. The rotation center of the grinding flap and the rotation center of the grinding flap are located in the same horizontal plane by the moving mechanism. Then, under the drive of the first motor, the grinding flap is rotated, and the grinding block on the grinding flap grinds the surface of the ball valve. At the same time, the clamping mechanism also drives the ball valve to rotate, further ensuring the sphericity of the ball valve.

[0016] 2. When the driving mechanism of the crank mechanism of the present invention causes the rotating shaft to rotate, the first crank and the third crank rotate simultaneously with the rotating shaft. While rotating, the first crank and the third crank push the outer ends of the second crank, the fourth crank and the fifth crank outward, so that the connecting blocks connected to them also move outward, thereby realizing the expansion of the grinding petals.

[0017] 3. In the present invention, due to the change in the specification of the ball valve, the distance between the ball valve and the grinding flap needs to be adjusted. The moving mechanism drives the second threaded rod to rotate through the fourth motor, so that the second nut block on the second threaded rod can move forward and backward along the second threaded rod. At the same time, under the coordinated action of the first slider and the second slide rail, the first moving platform can move forward and backward smoothly, thereby adjusting the distance between the ball valve and the grinding flap. And after the specification of the ball valve changes, the clamped ball valve needs to be adjusted left and right, so that the rotation center of the ball valve is aligned with the rotation center of the grinding flap. The moving mechanism drives the third threaded rod to rotate through the fifth motor, so that the third nut block on the third threaded rod can move left and right along the third threaded rod. At the same time, under the coordinated action of the second slider and the third slide rail, the second moving platform can move left and right smoothly, thereby aligning the rotation center of the ball valve with the rotation center of the grinding flap. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the unfolding mechanism;

[0020] Figure 3 It is a schematic diagram of the internal back-end structure of the deployment mechanism;

[0021] Figure 4 is a cross-sectional schematic diagram of the deployment mechanism;

[0022] Figure 5 It is a structural schematic diagram of the crank structure;

[0023] Figure 6 It is a schematic diagram of the rear structure of the crank structure;

[0024] Figure 7 It is a structural schematic diagram of a second mounting base;

[0025] Figure 8 It is a structural schematic diagram of the moving mechanism and the clamping mechanism;

[0026] Fig. 9 It is a connection diagram of the first motor and the mounting frame.

[0027] The marks in the accompanying drawings are: 1-workbench, 2-mounting column, 3-lifting mechanism, 4-lifting plate, 5-unfolding mechanism, 6-moving mechanism, 7-clamping mechanism, 8-first mounting seat, 9-mounting frame, 10-driving mechanism, 11-rotating shaft, 12-center block, 13-first connecting rod, 14-sleeve, 15-telescopic rod, 16-connecting block, 17-second connecting rod, 18-grinding petal, 19-second mounting seat, 20-grinding block, 21-crank structure, 22-first motor, 23-second motor, 24-worm, 25-worm wheel, 26-first crank, 27-second crank, 28-third crank, 29-fourth crank, 30-fifth crank, 31-third mounting seat, 32-first nut block, 33-third motor Machine, 34-first threaded rod, 35-first slide rail, 36-second slide rail, 37-first slider, 38-first moving platform, 39-fourth motor, 40-second threaded rod, 41-second nut block, 42-third slide rail, 43-second slider, 44-second moving platform, 45-fifth motor, 46-third threaded rod, 47-third nut block, 48-fourth mounting seat, 49-fourth slide rail, 50-sixth motor, 51-worm gear reducer, 52-first rotating disk, 53-first connecting cone, 54-third slider, 55-fifth mounting seat, 56-second rotating disk, 57-second connecting cone, 58-seventh motor, 59-fourth threaded rod, 60-fourth nut block, 61-mounting groove, 62-threaded hole. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0029] Embodiment: A three-dimensional arc-shaped rotating grinding machine for a ball valve body, such as Figure 1-9As shown, it comprises a workbench 1, a mounting column 2 is provided at the rear end of the workbench 1, a lifting mechanism 3 is provided on the mounting column 2, a lifting plate 4 is connected to the movable end of the lifting mechanism 3, and a spreading mechanism 5 is provided at the lower end of the lifting plate 4; a moving mechanism 6 is provided on the workbench 1, and a clamping mechanism 7 is provided on the moving mechanism 6; Figure 2-4 As shown, the unfolding mechanism 5 includes a first mounting seat 8, a mounting frame 9 is rotatably connected in the first mounting seat 8, a driving mechanism 10 is provided on the mounting frame 9, a rotating shaft 11 is connected to the output end of the driving mechanism 10, a center block 12 is rotatably connected to the rotating shaft 11, a first connecting rod 13 is connected to the center block 12, and the first connecting rod 13 is fixedly connected to the mounting frame 9; six sleeves 14 are distributed on the circumference of the side of the center block 12, a telescopic rod 15 is slidably connected in the sleeve 14, a connecting block 16 is connected to the outer end of the telescopic rod 15, and second connecting rods 17 are rotatably connected on both sides of the connecting block 16; polishing petals 18 are rotatably connected on adjacent connecting blocks 16 and between adjacent second connecting rods 17, and the six polishing petals 18 are in the shape of a desk lamp when not unfolded; as shown Figure 7 As shown, a second mounting seat 19 is provided at the inner side of the front end of the grinding petal 18, and a mounting groove 61 is symmetrically provided on the second mounting seat 19, and a grinding block 20 is placed in the mounting groove 61; threaded holes 62 are provided on both sides of the second mounting seat 19, and the threaded holes 62 are connected to the mounting groove 61. The grinding block 20 is placed in the mounting groove 61, and then the bolts are screwed in from the outside of the threaded holes 62 so that the inner ends of the bolts collide with the grinding block 20, thereby achieving the installation and fixation of the grinding block 20; the rotating shaft 11 is provided with crank structures 21 located at the front and rear sides of the center block 12, and the crank structure 21 is rotatably connected to the connecting block 16; the lower part of the lifting plate 4 is fixedly connected to the first motor 22, as shown in FIG. Fig. 9 As shown, the output end of the first motor 22 is fixedly connected to the mounting bracket 9 .

[0030] Preferably, if Figure 3 As shown, the driving mechanism 10 includes a second motor 23 fixedly connected to the mounting frame 9, the output end of the second motor 23 is connected to a worm 24, and the worm 24 is rotatably connected to the mounting frame 9; a worm wheel 25 is rotatably connected to the mounting frame 9, and the worm wheel 25 is connected and externally meshed with the worm 24; the worm wheel 25 is fixedly connected to the rotating shaft 11. The driving mechanism 10 drives the screw to rotate through the second motor 23, and the worm 24 drives the worm wheel 25 to mesh and rotate, so that the rotating shaft 11 connected to the worm wheel 25 rotates, and the deployment mechanism 5 is deployed and retracted.

[0031] Preferably, if Figure 5 and 6As shown, the crank structure 21 includes a first crank 26 fixedly connected to the rotating shaft 11, and a second crank 27 and a third crank 28 are hingedly connected to the upper part of the outer end of the first crank 26, and the third crank 28 is located at the upper part of the second crank 27; the third crank 28 is Y-shaped; the center of the third crank 28 is fixedly connected to the rotating shaft 11; the other two ends of the third crank 28 are respectively hingedly connected to the fourth crank 29 and the fifth crank 30; the outer ends of the second crank 27, the fourth crank 29 and the fifth crank 30 are respectively connected to different grinding petals 18. When the driving mechanism 10 rotates the rotating shaft 11, the first crank 26 and the third crank 28 rotate simultaneously with the rotating shaft 11, and the first crank 26 and the third crank 28 push the outer ends of the second crank 27, the fourth crank 29 and the fifth crank 30 outward while rotating, so that the connecting block 16 connected to them also moves outward, thereby realizing the expansion of the grinding petals 18.

[0032] Preferably, if Figure 1 As shown, the lifting mechanism 3 includes a third mounting seat 31 arranged at the upper end of the mounting column 2 and a first nut block 32 arranged on the lifting plate 4; a third motor 33 is fixedly connected to the third mounting seat 31, and the output end of the third motor 33 passes through the third mounting seat 31 and is connected to a first threaded rod 34, and the first threaded rod 34 cooperates with the first nut block 32; a first slide rail 35 is provided on the side of the mounting column 2, and the first slide rail 35 is slidably connected with the lifting plate 4. The lifting mechanism 3 drives the first threaded rod 34 to rotate through the third motor 33, so that the first nut block 32 on the first threaded rod 34 can move up and down along the first threaded rod 34, and at the same time, the first slide rail 35 slidably cooperates with the lifting plate 4, so that the lifting plate 4 can move up and down smoothly, thereby moving the display mechanism in the vertical direction.

[0033] Preferably, if Figure 1 and 8As shown, the moving mechanism 6 includes a second slide rail 36 symmetrically arranged on the workbench 1, a plurality of first sliders 37 are slidably connected to the second slide rail 36, and a first moving platform 38 is fixedly connected between the upper parts of the first sliders 37; a fourth motor 39 is arranged on the workbench 1, and a second threaded rod 40 is connected to the output end of the fourth motor 39; a second nut block 41 is fixedly connected to the lower part of the first moving platform 38, and the second nut block 41 cooperates with the second threaded rod 40. A third slide rail 42 is symmetrically arranged on the first moving platform 38, a plurality of second sliders 43 are slidably connected to the third slide rail 42, and a second moving platform 44 is fixedly connected between the upper parts of the second sliders 43; a fifth motor 45 is arranged on the first moving platform 38, and a third threaded rod 46 is connected to the output end of the fifth motor 45; a third nut block 47 is fixedly connected to the lower part of the second moving platform 44, and the third nut block 47 cooperates with the third threaded rod 46. Due to the change in the specification of the ball valve, the distance between the ball valve and the grinding flap 18 needs to be adjusted. The moving mechanism 6 drives the second threaded rod 40 to rotate through the fourth motor 39, so that the second nut block 41 on the second threaded rod 40 can move forward and backward along the second threaded rod 40. At the same time, under the coordinated action of the first slider 37 and the second slide rail 36, the first moving platform 38 can move forward and backward smoothly, thereby adjusting the distance between the ball valve and the grinding flap 18. And after the specification of the ball valve changes, it is necessary to adjust the clamped ball valve left and right so that the rotation center of the ball valve is aligned with the rotation center of the grinding flap 18. The moving mechanism 6 drives the third threaded rod 46 to rotate through the fifth motor 45, so that the third nut block 47 on the third threaded rod 46 can move left and right along the third threaded rod 46. At the same time, under the coordinated action of the second slider 43 and the third slide rail 42, the second moving platform 44 can move left and right smoothly, thereby aligning the rotation center of the ball valve with the rotation center of the grinding flap 18.

[0034] Preferably, if Figure 1 and 8As shown, the clamping mechanism 7 includes a fourth mounting seat 48 fixedly arranged on one side of the upper part of the second moving platform 44 and a fourth slide rail 49 symmetrically arranged on the other side of the upper part of the second moving platform 44; a sixth motor 50 is fixedly connected to the outer side of the fourth mounting seat 48, and the output end of the sixth motor 50 is connected to a worm gear reducer 51, and the output end of the worm gear reducer 51 passes through the fourth mounting seat 48 and is connected to a first rotating disk 52, and the first rotating disk 52 is rotatably connected to the fourth mounting seat 48; a first connecting cone 53 is provided on the first rotating disk 52. A third slider 54 is slidably connected to the fourth slide rail 49, a fifth mounting seat 55 is fixedly connected between the upper parts of the third slider 54, a second rotating disk 56 is rotatably connected to the inner side of the fifth mounting seat 55, and a second connecting cone 57 is provided on the second rotating disk 56; a seventh motor 58 is provided on the second moving platform 44, and a fourth threaded rod 59 is connected to the output end of the seventh motor 58; a fourth nut block 60 is fixedly connected to the lower part of the fifth mounting seat 55, and the fourth nut block 60 cooperates with the fourth threaded rod 59. The clamping mechanism 7 fixes the two ends of the ball valve by supporting the first connecting cone 53 and the second connecting cone 57 on both sides, and drives the worm gear reducer 51 to operate through the sixth motor 50, and the worm gear reducer 51 drives the first rotating disk 52 to rotate, so that the ball valve rotates, and drives the fourth threaded rod 59 to rotate through the seventh motor 58, so that the fourth nut block 60 on the fourth threaded rod 59 can move along the fourth threaded rod 59, and at the same time, under the coordinated action of the third slider 54 and the fourth slide rail 49, the fifth mounting seat 55 can move left and right smoothly, so that the position of the fifth mounting seat 55 can be adjusted according to the different diameters of the ball valve.

[0035] Working principle:

[0036] The ball valve is fixed by the clamping mechanism 7, and the lifting mechanism 3 moves the grinding flap 18 to the front of the ball valve. The rotation center of the grinding flap 18 and the rotation center of the grinding flap 18 are located in the same horizontal plane through the moving mechanism 6. Then, driven by the first motor 22, the grinding flap 18 rotates, and the grinding block 20 on the grinding flap 18 grinds the surface of the ball valve. At the same time, the clamping mechanism 7 also drives the ball valve to rotate, so as to further ensure the sphericity of the ball valve. When it is necessary to grind ball valves of different specifications, the unfolding mechanism 5 provides power for the unfolding of the grinding petal 18 through the internal driving mechanism 10, and the center block 12 is connected and fixed to the mounting frame 9 through the first connecting rod 13. The driving mechanism 10 drives the rotating shaft 11 to rotate, and the rotating shaft 11 drives the crank structure 21 fixedly connected thereto to rotate and unfold. The crank structure 21 pushes the connecting block 16 outward, and with the cooperation of the telescopic rod 15 and the sleeve 14, the connecting block 16 is smoothly unfolded outward. The connecting block 16 drives the grinding petal 18 to move outward through the second connecting rod 17, thereby realizing the expansion of the grinding petal 18, so that the grinding petal 18 can surround the outside of a ball valve of larger specifications.

Claims

1. A three-dimensional arc-shaped rotating grinding machine for a ball valve body, comprising a workbench (1), a mounting column (2) being provided at the rear end of the workbench (1), a lifting mechanism (3) being provided on the mounting column (2), a lifting plate (4) being connected to the movable end of the lifting mechanism (3), and a spreading mechanism (5) being provided at the lower end of the lifting plate (4); a moving mechanism (6) being provided on the workbench (1), and a clamping mechanism (7) being provided on the moving mechanism (6); the characteristics are: The unfolding mechanism (5) comprises a first mounting seat (8), a mounting frame (9) is rotatably connected inside the first mounting seat (8), a driving mechanism (10) is provided on the mounting frame (9), an output end of the driving mechanism (10) is connected to a rotating shaft (11), a center block (12) is rotatably connected to the rotating shaft (11), a first connecting rod (13) is connected to the center block (12), and the first connecting rod (13) is fixedly connected to the mounting frame (9); a plurality of sleeves (14) are distributed on the circumference of the side of the center block (12), a telescopic rod (15) is slidably connected inside the sleeve (14), an outer end of the telescopic rod (15) is connected to a connecting block (16), and the connecting block (16) The two sides are rotatably connected with second connecting rods (17); grinding flaps (18) are rotatably connected on adjacent connecting blocks (16) and between adjacent second connecting rods (17); a second mounting seat (19) is provided on the inner side of the front end of the grinding flap (18); a grinding block (20) is installed in the second mounting seat (19); the rotating shaft (11) is provided with crank structures (21) located at the front and rear sides of the center block (12), and the crank structure (21) is rotatably connected to the connecting block (16); a first motor (22) is fixedly connected to the lower part of the lifting plate (4), and the output end of the first motor (22) is fixedly connected to the mounting frame (9); the driving mechanism (1 0) comprises a second motor (23) fixedly connected to a mounting frame (9), an output end of the second motor (23) being connected to a worm (24), the worm (24) being rotatably connected to the mounting frame (9); a worm wheel (25) being rotatably connected to the mounting frame (9), the worm wheel (25) being connected to the worm (24) and externally meshing; the worm wheel (25) being fixedly connected to a rotating shaft (11); the crank structure (21) comprising a first crank (26) fixedly connected to the rotating shaft (11), a second crank (27) and a third crank (28) being hingedly connected to the upper portion of the outer end of the first crank (26), the third crank (28) being located above the second crank (27) The third crank (28) is Y-shaped; the center of the third crank (28) is fixedly connected to the rotating shaft (11); the other two ends of the third crank (28) are respectively hinged with a fourth crank (29) and a fifth crank (30); the outer ends of the second crank (27), the fourth crank (29) and the fifth crank (30) are respectively connected to different grinding petals (18); the second mounting seat (19) is symmetrically provided with mounting grooves (61), and the grinding block (20) is arranged in the mounting grooves (61); the second mounting seat (19) is respectively provided with threaded holes (62) on both sides, and the threaded holes (62) are communicated with the mounting grooves (61).

2. The three-dimensional arc-shaped rotating grinding machine for ball valve body according to claim 1, characterized in that: The lifting mechanism (3) comprises a third mounting seat (31) arranged at the upper end of the mounting column (2) and a first nut block (32) arranged on the lifting plate (4); a third motor (33) is fixedly connected to the third mounting seat (31), and the output end of the third motor (33) passes through the third mounting seat (31) and is connected to a first threaded rod (34), and the first threaded rod (34) cooperates with the first nut block (32); a first slide rail (35) is provided on the side of the mounting column (2), and the first slide rail (35) is slidably connected to the lifting plate (4).

3. The three-dimensional arc-shaped rotating grinding machine for ball valve body according to claim 1, characterized in that: The moving mechanism (6) comprises a second slide rail (36) symmetrically arranged on the workbench (1), a plurality of first sliders (37) are slidably connected to the second slide rail (36), and a first moving platform (38) is fixedly connected between the upper parts of the first sliders (37); a fourth motor (39) is provided on the workbench (1), and the output end of the fourth motor (39) is connected to a second threaded rod (40); a second nut block (41) is fixedly connected to the lower part of the first moving platform (38), and the second nut block (41) cooperates with the second threaded rod (40).

4. The three-dimensional arc-shaped rotating grinding machine for ball valve body according to claim 3, characterized in that: The first movable platform (38) is symmetrically provided with a third slide rail (42), a plurality of second slide blocks (43) are slidably connected to the third slide rail (42), and a second movable platform (44) is fixedly connected between the upper parts of the second slide blocks (43); a fifth motor (45) is provided on the first movable platform (38), and an output end of the fifth motor (45) is connected to a third threaded rod (46); a third nut block (47) is fixedly connected to the lower part of the second movable platform (44), and the third nut block (47) is matched with the third threaded rod (46).

5. The three-dimensional arc-shaped rotating grinding machine for ball valve body according to claim 4, characterized in that: The clamping mechanism (7) comprises a fourth mounting seat (48) fixedly arranged on one side of the upper part of the second movable platform (44) and a fourth slide rail (49) symmetrically arranged on the other side of the upper part of the second movable platform (44); a sixth motor (50) is fixedly connected to the outer side of the fourth mounting seat (48), the output end of the sixth motor (50) is connected to a worm gear reducer (51), the output end of the worm gear reducer (51) passes through the fourth mounting seat (48) and is connected to a first rotating disk (52), the first rotating disk (52) is rotatably connected to the fourth mounting seat (48); a first connecting cone (53) is provided on the first rotating disk (52).

6. The three-dimensional arc-shaped rotating grinding machine for ball valve body according to claim 5, characterized in that: The fourth slide rail (49) is slidably connected to a third slider (54), the upper part of the third slider (54) is fixedly connected to a fifth mounting seat (55), the inner side of the fifth mounting seat (55) is rotatably connected to a second rotating disk (56), and the second rotating disk (56) is provided with a second connecting cone (57); the second moving platform (44) is provided with a seventh motor (58), the output end of the seventh motor (58) is connected to a fourth threaded rod (59); the lower part of the fifth mounting seat (55) is fixedly connected to a fourth nut block (60), and the fourth nut block (60) is matched with the fourth threaded rod (59).

Images