Clamping tool for valve body precision machining

Abstract

The utility model relates to the technical field of valve body clamping devices, in particular to a clamping tool for valve body precision machining, which comprises a bottom plate and two support plates A, the two support plates A are respectively and fixedly connected with the left side and the right side of the bottom plate, the clamping tool further comprises a mounting plate, a mounting shell is fixed on the lower side of the mounting plate, and four arc-shaped positioning plates A are arranged on the upper side of the mounting plate; the left side of the moving plate A is provided with two arc-shaped positioning plates B, and the right side of the moving plate A is provided with a C-shaped mounting plate I; two positioning blocks are arranged on the right side of the moving plate B, and a C-shaped mounting plate II is mounted on the left side of the moving plate A; a regulation unit A; b, an adjusting unit; c, an adjusting unit; and a positioning unit. And by arranging an arc-shaped positioning plate, an arc-shaped positioning plate B, a moving plate A, an adjusting unit A, an adjusting unit B and an adjusting unit C, the device can be automatically adjusted, so that valve bodies with different sizes can be clamped, and the machining efficiency and the applicability of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve body clamping devices, in particular to a clamping tool for precision machining of valve bodies. Background Technique

[0002] The valve body is a main component in a valve; there are different mechanical manufacturing methods according to the pressure grade. The definition of a "valve" is a device used to control the direction, pressure, and flow rate of a fluid in a fluid system. A valve is a device that enables the medium (liquid, gas, powder) in a piping and equipment to flow or stop and can control its flow rate. The material of the valve body is selected according to different process media, and different materials are commonly used, such as cast iron, cast steel, stainless steel, carbon steel, plastic, copper, etc.

[0003] When machining the valve body, precision machining is carried out on the connection ports at both ends and the cross-section of the installation port. Other mechanisms of the valve are installed inside the installation port, and the two ends of the valve body are connected to the pipeline, so that the sealing performance after the valve is installed is better.

[0004] When the valve body is subjected to precision machining, the upper end or the installation port of the valve body is positioned. However, due to the different sizes of the valve bodies, the diameter of the upper port of the valve body and the distance position between the port and the connection port are different, so that the fixture needs to be replaced to carry out clamping, which affects the processing efficiency. For this reason, we propose a clamping tool for precision machining of valve bodies to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to solve the problem in the prior art that when the valve body is subjected to precision machining, the upper end or the installation port of the valve body is positioned. However, due to the different sizes of the valve bodies, the diameter of the upper port of the valve body and the distance position between the port and the connection port are different, so that the fixture needs to be replaced to carry out clamping, which affects the processing efficiency, and a clamping tool for precision machining of valve bodies is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] Design a clamping tool for precision machining of valve bodies, including a bottom plate and two A support plates. The two A support plates are respectively fixedly connected to the left and right sides of the bottom plate, and further include:

[0008] An installation plate, an installation shell is fixed to the lower side of the installation plate, and four A arc-shaped positioning plates are arranged on the upper side of the installation plate. The installation shell is fixedly connected to the upper side of the bottom plate;

[0009] An A moving plate, the A moving plate is located on the right side of the installation plate, two B arc-shaped positioning plates are arranged on the left side of the A moving plate, and a C-shaped installation plate one is installed on the right side of the A moving plate;

[0010] The B moving plate, the B moving plate is located on the left side of the mounting plate, and two positioning blocks are provided on the right side of the B moving plate. The left side of the A moving plate is equipped with a C-shaped mounting plate II;

[0011] An A adjusting unit, the A adjusting unit is located between the four A arc-shaped positioning plates and the mounting plate;

[0012] A B adjusting unit, the number of the B adjusting units is two, and the two B adjusting units are respectively located between the C-shaped mounting plate I and the right-end A support plate and between the C-shaped mounting plate II and the left-end A support plate;

[0013] A C adjusting unit, the C adjusting unit is located between the two B arc-shaped positioning plates and the A moving plate;

[0014] A positioning unit, the positioning unit is located between the two positioning blocks and the B moving plate.

[0015] Preferably, the A adjusting unit includes an A motor. An A moving block is fixed inside the A arc-shaped positioning plate. Four A guiding holes are provided on the upper side of the mounting plate. An A driving block slides inside the A guiding hole. The A driving block is fixedly connected to the lower side of the A moving block. Two auxiliary parts are provided between the A moving block and the A driving block. An A threaded hole is provided on one side of the A driving block. An A screw rod is in threaded engagement transmission inside the A threaded hole. Both ends of the outer side of the A screw rod are rotated with a B support plate. The B support plate is fixedly connected to the lower side of the mounting plate. A positioning shaft is fixed at the center of the lower side of the mounting plate. An A bevel gear is rotated on the outer side of the positioning shaft. Four B bevel gears are in tooth engagement transmission on the outer side of the A bevel gear. The B bevel gear is fixedly connected to the outer side of the A screw rod. The A motor is installed on the lower side of the mounting plate. The A motor is connected to the A bevel gear through gear engagement transmission. The A motor is connected to the power supply and the controller through a wire.

[0016] By adopting the above technical solution, the positions of the four A arc-shaped positioning plates on the mounting plate can be automatically adjusted, the diameter of the circle formed by the four A arc-shaped positioning plates can be adjusted, and the valve bodies of different sizes can be positioned.

[0017] Preferably, the auxiliary part includes two limiting plates. Eight B guiding holes are provided on the upper side of the mounting plate. The A guiding hole is located between the two B guiding holes. A guiding block is provided on both sides of the A driving block. The guiding block is fixedly connected to the lower side of the A moving block and the guiding block can slide inside the B guiding hole. The limiting plate is detachably connected to the lower side of the guiding block through a bolt. Two L-shaped positioning grooves are provided on one side of the A driving block. An A positioning strip is fixed on the lower side of the limiting plate. The A positioning strip and the limiting plate can both slide inside the L-shaped positioning groove.

[0018] By adopting the above technical solution, the auxiliary part plays a role in limiting and guiding the movement of the A driving block in the A guiding hole on the mounting plate, making the movement of the A adjusting unit more stable.

[0019] Preferably, the B adjusting unit includes a lifting plate, two A electric telescopic rods and two A electric linear slide rails. A dovetail groove is provided on one side of the A support plate facing the mounting plate. A B guiding block is fixed on one side of the lifting plate facing the A support plate. The B guiding block can slide inside the dovetail groove. The A electric linear slide rails are installed on the front and rear sides of the A support plate. A connecting plate is installed on the sliding end of the A electric linear slide rail. The connecting plate is fixedly connected to the lifting plate. Two A through holes are provided on one side of the lifting plate. The A electric telescopic rod is installed on one side of the lifting plate. The shaft end of the A electric telescopic rod passes through the A through hole and is detachably connected between the first C-shaped mounting plate and the second C-shaped mounting plate.

[0020] By adopting the above technical solution, the B adjusting unit can adjust the height of the lifting plate and the horizontal positions of the first C-shaped mounting plate and the second C-shaped mounting plate, and can better position valve bodies of different sizes.

[0021] Preferably, two B through holes are provided on one side of the lifting plate. A positioning rod slides inside the B through holes. The positioning rod is fixedly connected between the first C-shaped mounting plate and the second C-shaped mounting plate.

[0022] By adopting the above technical solution, the positioning rod plays a role in guiding and limiting the horizontal movement of the first C-shaped mounting plate and the second C-shaped mounting plate.

[0023] Preferably, the C adjusting unit includes a B motor and a B screw rod. A B moving block is fixed inside the B arc-shaped positioning plate. A C guiding hole is provided on one side of the A moving plate. Two B driving blocks slide inside the C guiding hole. A limiting strip is fixed on both the upper and lower sides of the B driving block. A B threaded hole is provided on one side of the B driving block. The B screw rod is in threaded engagement transmission connection with the inside of the B threaded hole. Two C support plates are rotated on both ends of the outside of the B screw rod. The C support plates are fixedly connected to the A moving plate. A C through hole is provided on the rear side of the first C-shaped mounting plate. The shaft end of the B motor passes through the C through hole and is fixedly connected to one end of the B screw rod. The B motor is installed on the rear side of the first C-shaped mounting plate and the B motor is connected to the power supply and the controller through a wire.

[0024] By adopting the above technical solution, the C adjusting unit automatically adjusts the position of the B arc-shaped positioning plate on the A moving plate, so that the two B arc-shaped positioning plates can position different sizes, improving the convenience of the device.

[0025] Preferably, the positioning unit includes four B electric linear slides, a D guide hole is provided on one side of the B movable plate, two C driving blocks are slidingly mounted on the inner side of the D guide hole, the C driving block is fixedly connected to the positioning block, B limit strips are fixed on the upper and lower sides of the C driving block, the B electric linear slide is installed on the inner side of the second C-type mounting plate and one side of the B movable plate, the C driving block is connected to the moving end on the B electric linear slide, a positioning hole is provided on one side of the C driving block, an auxiliary rod is provided on the inner side of the second C-type mounting plate, the auxiliary rod can slide on the inner side of the positioning hole, a D support plate is fixed on the outer side of the auxiliary rod, the D support plate is fixedly connected to the B movable plate, and the B electric linear slide is connected to a power supply and a controller via a wire.

[0026] By adopting the above technical solution, the positioning unit can automatically adjust the positioning block to move on the B movable plate, and can clamp and position valve bodies of different sizes.

[0027] The utility model provides a clamping tool for precision machining of valve bodies, which has the following beneficial effects:

[0028] 1. By setting the arc positioning plate, B arc positioning plate, A movable plate, A adjustment unit, B adjustment unit, and C adjustment unit, the device can be automatically adjusted, so that valve bodies of different sizes can be clamped, thereby improving the processing efficiency and the applicability of the device.

[0029] 2. By setting the B moving plate and the B adjusting unit, the device can better clamp the valve body, thereby improving the clamping effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the front side top view of the three-dimensional structure of a clamping tool for precision machining of a valve body proposed by the utility model;

[0031] Figure 2 The utility model proposed Figure 1 A partial enlarged schematic diagram of the three-dimensional structure of the middle A area;

[0032] Figure 3 The utility model proposed Figure 1 A schematic diagram of the partially enlarged three-dimensional structure of the middle B area;

[0033] Figure 4 The utility model proposed Figure 1 A schematic diagram of the partially enlarged three-dimensional structure of the middle C area;

[0034] Figure 5 It is a schematic diagram of the upper cutaway three-dimensional structure of a clamping tool for precision machining of a valve body proposed by the utility model;

[0035] Figure 6 The utility model proposedFigure 5 A schematic diagram of the partially enlarged three-dimensional structure of the middle D area;

[0036] Figure 7 The utility model proposed Figure 5 A schematic diagram of the partially enlarged three-dimensional structure of the middle E area;

[0037] Figure 8 The utility model proposed Figure 5 A schematic diagram of the partially enlarged three-dimensional structure of the middle F area;

[0038] Figure 9 This is a schematic diagram of the front cutaway three-dimensional structure of a clamping tool for precision machining of a valve body proposed by the utility model;

[0039] Figure 10 The utility model proposed Figure 9 A schematic diagram of the three-dimensional structure of a partial enlargement of the middle G area;

[0040] Figure 11 The utility model proposed Figure 9 A schematic diagram of the partially enlarged three-dimensional structure of the middle H area;

[0041] Figure 12 The utility model proposed Figure 9 Schematic diagram of the partially enlarged three-dimensional structure of area I in the middle.

[0042] In the figure: 1, bottom plate; 2, support plate A; 3, mounting plate; 4, moving plate A; 5, moving plate B; 6, adjusting unit A; 61, motor A; 62, moving block A; 63, driving block A; 64, auxiliary part; 641, limit plate; 642, guide block A; 643, positioning bar A; 65, screw rod A; 66, support plate B; 67, positioning shaft; 68, bevel gear A; 69, bevel gear B; 7, adjusting unit B; 71, lifting plate; 72, electric telescopic rod A; 73, electric linear guide rail A; 74, B guide block; 75, connecting plate; 76, positioning rod; 8, C adjustment unit; 81, B motor; 82, B screw; 83, B moving block; 84, B driving block; 85, A limit strip; 86, C support plate; 9, positioning unit; 91, B electric linear guide; 92, C driving block; 93, B limit strip; 94, auxiliary rod; 95, D support plate; 10, mounting shell; 11, A arc positioning plate; 12, B arc positioning plate; 13, C type mounting plate one; 14, positioning block; 15, C type mounting plate two. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0044] Reference Figures 1-12 , a clamping tooling for precision machining of a valve body, includes a bottom plate 1 and two A support plates 2. The two A support plates 2 are respectively and fixedly connected to the left and right sides of the bottom plate 1. It further includes:

[0045] A mounting plate 3. An installation shell 10 is fixed to the lower side of the mounting plate 3. Four A arc-shaped positioning plates 11 are provided on the upper side of the mounting plate 3. The installation shell 10 is fixedly connected to the upper side of the bottom plate 1;

[0046] An A adjustment unit 6. The A adjustment unit 6 is located between the four A arc-shaped positioning plates 11 and the mounting plate 3. The A adjustment unit 6 includes an A motor 61. An A moving block 62 is fixed to the inner side of the A arc-shaped positioning plate 11. Four A guide holes are provided on the upper side of the mounting plate 3. An A driving block 63 is slidably arranged inside the A guide hole. The A driving block 63 is fixedly connected to the lower side of the A moving block 62. An A threaded hole is provided on one side of the A driving block 63. An A screw rod 65 is in threaded engagement transmission inside the A threaded hole. Both ends of the outer side of the A screw rod 65 are rotatably provided with B support plates 66. The B support plates 66 are fixedly connected to the lower side of the mounting plate 3. A positioning shaft 67 is fixed to the center of the lower side of the mounting plate 3. An A bevel gear 68 is rotatably arranged on the outer side of the positioning shaft 67. Four B bevel gears 69 are in tooth engagement transmission on the outer side of the A bevel gear 68. The B bevel gears 69 are fixedly connected to the outer side of the A screw rod 65. The A motor 61 is installed on the lower side of the mounting plate 3. The A motor 61 is connected to the A bevel gear 68 through gear engagement transmission. The A motor 61 is connected to the power supply and the controller through a wire. The A motor 61 drives the A bevel gear 68 to rotate on the positioning shaft 67 through gears, so that the A bevel gear 68 drives the B bevel gears 69 to rotate together. The B bevel gears 69 will drive the A screw rod 65 to rotate on the B support plates 66. With the rotation of the A screw rod 65, the A driving block 63 is driven to move inside the A guide hole. The A driving block 63 will drive the A moving block 62 to move on the upper side of the mounting plate 3. The mounting plate 3 drives the A arc-shaped positioning plates 11 to move together, so that the four A arc-shaped positioning plates 11 form different diameter sizes. The A arc-shaped positioning plates 11 can enter the inner part of the connection port on the valve body, enabling the device to position valve bodies of different sizes from the lower side, improving the applicability of the device.

[0047] There are two auxiliary parts 64 between the A moving block 62 and the A driving block 63. The auxiliary part 64 includes two limiting plates 641. There are eight B guiding holes on the upper side of the mounting plate 3. The A guiding hole is located between the two B guiding holes. A guiding blocks 642 are provided on both sides of the A driving block 63. The A guiding blocks 642 are fixedly connected to the lower side of the A moving block 62 and the A guiding blocks 642 can slide inside the B guiding holes. The limiting plates 641 and the lower sides of the A guiding blocks 642 are detachably connected by bolts. There are two L-shaped positioning grooves on one side of the A driving block 63. An A positioning strip 643 is fixed to the lower side of the limiting plate 641. The A positioning strip 643 and the limiting plate 641 can both slide inside the L-shaped positioning groove. The A positioning strip 643 connects the limiting plate 641 and the A moving block 62 together, enabling the limiting plate 641 to move unidirectionally only. Slide the limiting plate 641 into the L-shaped positioning groove and then connect it to the A guiding block 642, so that the limiting plate 641 can limit the A moving block 62. At the same time, the A guiding block 642 guides the movement of the A moving block 62, making the movement of the A moving block 62 and the A driving block 63 more stable and improving the operating stability of the A adjusting unit 6.

[0048] An A moving plate 4 is located on the right side of the mounting plate 3. There are two B arc-shaped positioning plates 12 on the left side of the A moving plate 4. A C-shaped mounting plate one 13 is installed on the right side of the A moving plate 4;

[0049] C adjustment unit 8, the C adjustment unit 8 is located between two B arc-shaped positioning plates 12 and the A moving plate 4. The C adjustment unit 8 includes a B motor 81 and a B screw rod 82. A B moving block 83 is fixed inside the B arc-shaped positioning plate 12. A C guiding hole is provided on one side of the A moving plate 4. Two B driving blocks 84 are slidably arranged inside the C guiding hole. A limiting strips 85 are fixed on both the upper and lower sides of the B driving block 84. A B threaded hole is provided on one side of the B driving block 84. The B screw rod 82 is in threaded engagement with the inside of the B threaded hole. Both ends of the outer side of the B screw rod 82 are rotatably provided with C support plates 86. The C support plates 86 are fixedly connected to the A moving plate 4. A C through hole is provided at the rear side of the C-shaped mounting plate one 13. The shaft end of the B motor 81 passes through the C through hole and is fixedly connected to one end of the B screw rod 82. The B motor 81 is installed at the rear side of the C-shaped mounting plate one 13 and the B motor 81 is connected to the power supply and the controller through a wire. The B motor 81 drives the B screw rod 82 to rotate on the C support plate 86. With the rotation of the B screw rod 82, and due to the different thread directions of the double threads outside the B screw rod 82 and the threads on the B threaded holes on the two B driving blocks 84, the two B driving blocks 84 move in opposite directions inside the C guiding hole. The B driving block 84 drives the B moving block 83 to move on the A moving plate 4. Then the A moving plate 4 drives the B arc-shaped positioning plate 12 to move, so that the two B arc-shaped positioning plates 12 form different diameters to position the mounting holes on valve bodies of different sizes. Cooperating with the A arc-shaped positioning plate 11 can limit the position of the valve body, making one of the two ends of the valve body face upward for processing, improving the applicability of the device.

[0050] The B moving plate 5, the B moving plate 5 is located on the left side of the mounting plate 3. Two positioning blocks 14 are provided on the right side of the B moving plate 5. The C-shaped mounting plate two 15 is installed on the left side of the A moving plate 4;

[0051] Positioning unit 9 is located between two positioning blocks 14 and the B moving plate 5. The positioning unit 9 includes four B electric linear slide rails 91. There is a D guiding hole on one side of the B moving plate 5. Two C driving blocks 92 slide inside the D guiding hole. The C driving blocks 92 are fixedly connected to the positioning blocks 14. B limiting strips 93 are fixed on the upper and lower sides of the C driving blocks 92. The B electric linear slide rails 91 are installed inside the C-shaped mounting plate two 15 and on one side of the B moving plate 5. The C driving blocks 92 are connected to the moving ends on the B electric linear slide rails 91. There is a positioning hole on one side of the C driving block 92. An auxiliary rod 94 is provided inside the C-shaped mounting plate two 15. The auxiliary rod 94 can slide inside the positioning hole. The auxiliary rod 94 plays a role in guiding and limiting the movement of the C driving block 92. A D support plate 95 is fixed on the outer side of the auxiliary rod 94. The D support plate 95 is fixedly connected to the B moving plate 5. The B electric linear slide rails 91 are connected to the power supply and the controller through wires. Two B electric linear slide rails 91 drive a C driving block 92 to move inside the D guiding hole, enabling the two C driving blocks 92 to automatically move inside the D guiding hole. The C driving blocks 92 drive the positioning blocks 14 to move together, clamping the valve with the two positioning blocks 14, thereby improving the stability of clamping the valve.

[0052] There are two B adjusting units 7. The two B adjusting units 7 are respectively located between the C-shaped mounting plate one 13 and the right-end A support plate 2, and between the C-shaped mounting plate two 15 and the left-end A support plate 2. The B adjusting unit 7 includes a lifting plate 71, two A electric telescopic rods 72, and two A electric linear slide rails 73. There are two B through holes on one side of the lifting plate 71. A positioning rod 76 slides inside the B through holes. The positioning rod 76 is fixedly connected to the C-shaped mounting plate one 13 and the C-shaped mounting plate two 15. There is a dovetail groove on the side of the A support plate 2 facing the mounting plate 3. A B guiding block 74 is fixed on the side of the lifting plate 71 facing the A support plate 2. The B guiding block 74 can slide inside the dovetail groove. The B guiding block 74 plays a role in guiding the movement of the lifting plate 71 on the A support plate 2, making the movement of the lifting plate 71 more stable. The A electric linear slide rails 73 are installed on the front and back sides of the A support plate 2. The sliding ends of the A electric linear slide rails 73 are equipped with connecting plates 75. The connecting plates 75 are fixedly connected to the lifting plate 71. There are two A through holes on one side of the lifting plate 71. The A electric telescopic rods 72 are installed on one side of the lifting plate 71. The shaft ends of the A electric telescopic rods 72 pass through the A through holes and are detachably connected to the C-shaped mounting plate one 13 and the C-shaped mounting plate two 15. The A electric linear slide rails 73 drive the lifting plate 71 to move up and down on the A support plate 2 through the connecting plates 75, thereby adjusting the height of the lifting plate 71. Then, the A electric telescopic rods 72 drive the A moving plate 4 and the B moving plate 5 to move horizontally through the C-shaped mounting plate one 13 and the C-shaped mounting plate two 15, clamping the valve body with the A moving plate 4 and the B moving plate 5, improving the clamping effect of the device on the valve body, and improving the precision of valve body processing.

[0053] Principle of use:

[0054] Vertically install the valve on the device, and then adjust the positions of the four A-arc positioning plates 11 through the A adjustment unit 6 to position the lower port of the valve. Then, the B adjustment unit 7 adjusts the positions of the A moving plate 4 and the B moving plate 5 respectively to clamp the A moving plate 4 and the B moving plate 5, and make the B-arc positioning plate 12 enter the installation hole. At the same time, the C adjustment unit 8 adjusts the position of the B-arc positioning plate 12 to position the installation hole. Then, the positioning unit 9 moves with the positioning block 14 to clamp the valve, more stably clamp valve bodies of different sizes, and achieve precision machining of valve bodies of different sizes.

[0055] In the description of this patent, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific situations.

[0056] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A clamping tooling for precision machining of a valve body, comprising a bottom plate (1) and two A support plates (2), the two A support plates (2) are respectively fixedly connected to the left and right sides of the bottom plate (1), and it is characterized in that, It further includes: A mounting plate (3), with a mounting shell (10) fixed to the lower side of the mounting plate (3), and four A-arc-shaped positioning plates (11) provided on the upper side of the mounting plate (3). The mounting shell (10) is fixedly connected to the upper side of the bottom plate (1). An A moving plate (4), which is located on the right side of the mounting plate (3). Two B-arc-shaped positioning plates (12) are provided on the left side of the A moving plate (4), and a C-shaped mounting plate one (13) is installed on the right side of the A moving plate (4). A B moving plate (5), which is located on the left side of the mounting plate (3). Two positioning blocks (14) are provided on the right side of the B moving plate (5), and a C-shaped mounting plate two (15) is installed on the left side of the A moving plate (4). An A adjusting unit (6), which is located between the four A-arc-shaped positioning plates (11) and the mounting plate (3). A B adjusting unit (7), the number of which is two. The two B adjusting units (7) are respectively located between the C-shaped mounting plate one (13) and the right-end A support plate (2), and between the C-shaped mounting plate two (15) and the left-end A support plate (2). A C adjusting unit (8), which is located between the two B-arc-shaped positioning plates (12) and the A moving plate (4). A positioning unit (9), which is located between the two positioning blocks (14) and the B moving plate (5).

2. The clamping tooling for precision machining of a valve body according to claim 1, characterized in that, The A adjusting unit (6) includes an A motor (61). An A moving block (62) is fixed to the inner side of the A-arc-shaped positioning plate (11). Four A guiding holes are provided on the upper side of the mounting plate (3). An A driving block (63) slides inside the A guiding hole. The A driving block (63) is fixedly connected to the lower side of the A moving block (62). Two auxiliary parts (64) are provided between the A moving block (62) and the A driving block (63). An A threaded hole is provided on one side of the A driving block (63). An A screw rod (65) is in threaded engagement transmission inside the A threaded hole. Both ends of the outer side of the A screw rod (65) are rotatably provided with B support plates (66). The B support plates (66) are fixedly connected to the lower side of the mounting plate (3). A positioning shaft (67) is fixed to the center of the lower side of the mounting plate (3). An A bevel gear (68) is rotatably provided on the outer side of the positioning shaft (67). Four B bevel gears (69) are in tooth engagement transmission with the outer side of the A bevel gear (68). The B bevel gears (69) are fixedly connected to the outer side of the A screw rod (65). The A motor (61) is installed on the lower side of the mounting plate (3). The A motor (61) is connected to the A bevel gear (68) through gear engagement transmission. The A motor (61) is connected to the power supply and the controller through a wire.

3. The clamping tooling for precision machining of a valve body according to claim 2, characterized in that, The auxiliary part (64) includes two limiting plates (641). There are eight B guiding holes on the upper side of the mounting plate (3). The A guiding hole is located between two B guiding holes. A guiding blocks (642) are arranged on both sides of the A driving block (63). The A guiding blocks (642) are fixedly connected to the lower side of the A moving block (62), and the A guiding blocks (642) can slide inside the B guiding holes. The limiting plates (641) and the lower sides of the A guiding blocks (642) are detachably connected by bolts. Two L-shaped positioning grooves are arranged on one side of the A driving block (63). An A positioning strip (643) is fixed to the lower side of the limiting plate (641). The A positioning strip (643) and the limiting plate (641) can both slide inside the L-shaped positioning grooves.

4. A clamping tooling for precision machining of a valve body according to claim 1, characterized in that, The B adjusting unit (7) includes a lifting plate (71), two A electric telescopic rods (72) and two A electric linear sliding rails (73). A dovetail groove is arranged on one side of the A support plate (2) facing the mounting plate (3). A B guiding block (74) is fixed to one side of the lifting plate (71) facing the A support plate (2). The B guiding block (74) can slide inside the dovetail groove. The A electric linear sliding rails (73) are installed on the front and rear sides of the A support plate (2). A connecting plate (75) is installed on the sliding end of the A electric linear sliding rails (73). The connecting plate (75) is fixedly connected to the lifting plate (71). Two A through holes are arranged on one side of the lifting plate (71). The A electric telescopic rods (72) are installed on one side of the lifting plate (71). The shaft ends of the A electric telescopic rods (72) pass through the A through holes and are detachably connected between the C-shaped mounting plate one (13) and the C-shaped mounting plate two (15).

5. A clamping tooling for precision machining of a valve body according to claim 4, characterized in that, Two B through holes are arranged on one side of the lifting plate (71). A positioning rod (76) slides inside the B through holes. The positioning rod (76) is fixedly connected between the C-shaped mounting plate one (13) and the C-shaped mounting plate two (15).

6. The clamping tooling for precision machining of a valve body according to claim 1, characterized in that, The C adjusting unit (8) includes a B motor (81) and a B screw rod (82). A B moving block (83) is fixed inside the B arc-shaped positioning plate (12). A C guiding hole is arranged on one side of the A moving plate (4). Two B driving blocks (84) slide inside the C guiding hole. A limiting strips (85) are fixed to the upper and lower sides of the B driving blocks (84). A B threaded hole is arranged on one side of the B driving blocks (84). The B screw rod (82) is in threaded meshing transmission connection with the inside of the B threaded hole. C support plates (86) are rotated on both ends of the outside of the B screw rod (82). The C support plates (86) are fixedly connected to the A moving plate (4). A C through hole is arranged on the rear side of the C-shaped mounting plate one (13). The shaft end of the B motor (81) passes through the C through hole and is fixedly connected to one end of the B screw rod (82). The B motor (81) is installed on the rear side of the C-shaped mounting plate one (13), and the B motor (81) is connected to the power supply and the controller through wires.

7. A clamping tooling for precision machining of a valve body according to claim 1, characterized in that, The positioning unit (9) includes four B electric linear sliding rails (91). One side of the B moving plate (5) is provided with D guiding holes, and two C driving blocks (92) are slidably arranged inside the D guiding holes. A fixed connection is established between the C driving blocks (92) and the positioning blocks (14). B limiting strips (93) are fixed on the upper and lower sides of the C driving blocks (92). The B electric linear sliding rails (91) are installed inside the C-shaped mounting plate two (15) and on one side of the B moving plate (5). The C driving blocks (92) are connected to the moving ends on the B electric linear sliding rails (91). A positioning hole is provided on one side of the C driving blocks (92). An auxiliary rod (94) is arranged inside the C-shaped mounting plate two (15). The auxiliary rod (94) can slide inside the positioning hole. A D support plate (95) is fixed on the outer side of the auxiliary rod (94). A fixed connection is established between the D support plate (95) and the B moving plate (5). The B electric linear sliding rails (91) are connected to a power supply and a controller through wires.

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