Positioning equipment special for cutting precision manufacturing valve casting

Abstract

The invention relates to the technical field of valve casting machining, in particular to positioning equipment special for cutting of precisely-manufactured valve castings. According to the technical scheme, the special positioning equipment for cutting the precisely manufactured valve casting comprises a positioning table, a pipe diameter positioning assembly, a transmission screw rod, a linkage control mechanism and an outer diameter clamping assembly; when a single group of branch pipes are encountered, the inner claw goes deep into the pipe orifice for radial positioning, deep tools are sequentially and additionally arranged to enter the vertical adjusting groove and the transverse adjusting groove, secondary positioning installation is completed, the limiting claw is fixed on the outer side of the inner claw, and the outer diameter of the valve is limited and protected. The driving motor drives the rotating shaft to drive the driving bevel gear and the driven bevel gear to be in meshing transmission so that the conveying screw can rotate, the four-axis linkage state is formed, the multiple sets of outer diameter clamping assemblies sequentially and synchronously slide to position and clamp the valve casting branch pipe, therefore, positioning installation is better conducted, and the overall stability performance is improved.

Description

Technical Field

[0001] The invention relates to the technical field of valve casting processing, in particular to special positioning equipment for cutting precision-manufactured valve castings. Background Art

[0002] Valves are important components in fluid control systems, used to control the flow of fluids. Valve castings are an important part of valve manufacturing and have precise shapes and sizes. In order to ensure cutting accuracy, special cutting positioning equipment is an important tool in valve manufacturing.

[0003] Valves are shaft-shaped and are usually fixed with clamping blocks using fixing holes and fixing rods. The clamping position is adjusted according to the thickness of the valve casting. During the one-piece casting process, two or three sets of branch pipes may extend from the valve casting. If the clamping block fails to clamp to the valve outer diameter in time, it will cause the clamping to loosen, which will make the cutting prone to deviation and affect the overall valve molding effect.

[0004] Therefore, in view of the fact that two or three sets of branch pipes may extend from the above-mentioned valve castings during the one-piece casting process, if the clamping block fails to clamp to the valve outer diameter in time, it will cause the clamping to loosen, and then the cutting will be prone to deviation. Therefore, special positioning equipment for cutting valve castings can be designed and manufactured with precision. Summary of the Invention

[0005] In order to overcome the problem that two or three sets of branch pipes may extend from the existing valve casting during the one-piece casting process, if the clamping block fails to clamp to the valve outer diameter in time, it will cause the clamping to loosen, which will make the cutting prone to deviation and affect the overall valve molding effect.

[0006] The technical solution of the present invention is: precision manufacturing special positioning equipment for valve casting cutting, including a positioning platform, a pipe diameter positioning component, a transmission screw, a linkage control mechanism and an outer diameter clamping component; the positioning platform is provided with outer diameter clamping components that can be displaced from far to near to position and clamp the outer diameter of the valve casting, and the positioning platform is provided with pipe diameter positioning components that can be slidably operated to clamp and position the pipe diameter on the valve near the corners on all four sides. The positioning platform is provided with a linkage control mechanism that controls the sliding synchronous belt linkage displacement of the outer diameter clamping component with the pipe diameter positioning component, and a transmission screw that controls the far and near displacement is provided between the linkage control mechanism and the pipe diameter positioning component.

[0007] Preferably, when encountering multiple groups of branch pipes, the driving motor drives the push rod to drive the connecting sleeve to move up and down, and the universal joint, follow-up bogie and steering wheel drive the conveying screw to rotate synchronously to form a four-axis linkage state, and multiple groups of outer diameter clamping components slide synchronously in turn to position and clamp the valve casting branch pipes. When the valve casting surface is curved due to the influence of the shape, the pipe diameter positioning component gradually approaches the valve casting along the slide rail through the sliding sleeve, and the curved fitting plate is successively abutted against the outer diameter of the valve casting. As the degree of extrusion and fitting is different, the cylinder drives the push column to drive the curved fitting plate to form a reaction force support, and transmits vibration through the spring sleeve to form a reverse mitigation effect to prevent contact loosening.

[0008] Preferably, pillars are provided at the corners around the bottom of the positioning platform, a positioning plate is provided at the top center of the positioning platform, auxiliary slide grooves for the sliding operation of the pipe diameter positioning assembly are symmetrically opened near the corners around the positioning platform, guide grooves for the sliding of the outer diameter clamping assembly are opened at the four sides of the positioning platform, positioning holes are opened along both sides of the guide groove, through holes are opened around the outside of the positioning platform to connect to the guide groove, and a shock-absorbing protective plate is provided on the outer cover of the through holes, a mounting groove is opened at the bottom center of the positioning platform, an inner cavity connected to the guide groove is opened inside the center of the positioning platform, and a top sleeve is provided on the top of the inner cavity.

[0009] Preferably, a rotating shaft is provided inside the inner cavity, and a connecting column corresponding to the top sleeve is coaxially provided on the connecting sleeve. A driving bevel gear is fixedly connected between the rotating shaft and the connecting column. A driving motor is provided at the bottom of the driving bevel gear. Four sets of driven bevel gears in transmission meshing are provided on the driving bevel gear. A connecting shaft is provided at one end of the driven bevel gear, and a conveying screw is provided at one end of the connecting shaft. A positioning collar for protection and support is provided on the connecting shaft. A corresponding disk is provided at the end of the conveying screw away from the driven bevel gear, and a conduction column is provided in the center of the corresponding disk. The driving motor drives the rotating shaft to drive the driving bevel gear and the driven bevel gear to engage and transmit the conveying screw to rotate.

[0010] Preferably, the pipe diameter positioning assembly includes a shock-absorbing box, a shock-absorbing cavity is opened inside the shock-absorbing box, a sliding sleeve is provided at the bottom center of the shock-absorbing box, a sliding rail fixedly connected to the positioning platform is provided at the bottom of the sliding sleeve, and two sets of guide wheels are symmetrically provided at the bottom of the shock-absorbing box.

[0011] Preferably, a plurality of shock-absorbing sleeves are provided in a linear array on a side of the shock-absorbing box close to the center of the positioning platform, a pushing column is provided at one end of the shock-absorbing sleeve, a curved bonding plate is provided at one end of the pushing column, a balancing sleeve is provided at the end of the pushing column away from the curved bonding plate, a spring sleeve is provided between the balancing sleeve and the pushing column, a spring damper is provided inside the spring sleeve, and a cylinder corresponding to the pushing column is provided on the balancing sleeve.

[0012] Preferably, the linkage control mechanism includes a first turntable, a connecting box and a second turntable. The first turntable and the second turntable are arranged in parallel. The outer sleeves of the first turntable and the second turntable are provided with a first transmission belt. The center of the second turntable is provided with a center disk. A deflection block is eccentrically provided on the center disk. There are four groups of connecting boxes. The four groups of connecting boxes are located at the corners around the positioning platform. A protective sleeve is provided on the top of the connecting box, which is sleeved on the outside of the transmission screw.

[0013] Preferably, a third turntable is provided in the center of the connecting box, a curved push rack is provided between the third turntable and the second turntable, a rebound sleeve is provided between the curved push rack and the deflection block, a spring rubber damper is provided inside the rebound sleeve, a fourth turntable is provided above the third turntable and is sleeved on the end of the transmission screw, and a second transmission belt is provided on the outer sleeve of the fourth turntable and the third turntable.

[0014] Preferably, the outer diameter clamping assembly includes a reinforcing plate, a stabilizing plate is provided at the bottom of the reinforcing plate, an adjustment vertical slot is opened in the center of the reinforcing plate, and adjustment horizontal slots are linearly opened from bottom to top in the adjustment vertical slot, and special limit holes are opened at both ends of the adjustment horizontal slot.

[0015] Preferably, a threaded sleeve is provided at the bottom of the stabilizing plate, and multiple sets of fixed limiting claws are linearly provided on both sides of the reinforcing plate. Inclined brackets are linearly provided on both sides of one side of the reinforcing plate, and an adapter plate is provided at the lower end of the inclined bracket. An adapter hole is opened in the center of the adapter plate.

[0016] Preferably, movable grooves are provided at the edges on both sides of the side of the reinforcing plate away from the oblique bracket, a rotating rod is provided inside the movable groove, an inner claw is linearly provided on the rotating rod, a guide hole is provided in the center of the inner claw, a fixing frame is provided on the top of the reinforcing plate, an adjusting spring extending to the rotating rod is laterally provided on the top of the fixing frame, a spring rubber damping layer is provided inside the adjusting spring, and a positioning bolt is provided at the middle of the adjusting spring corresponding to the position of the fixing frame.

[0017] Beneficial effects of the present invention:

[0018] 1. According to the previous one-piece casting process of valve castings, two or three groups of branch pipes may be extended. The outer diameter clamping assembly is set up, and it can limit the valve casting with the sliding displacement of the guide groove. When encountering a single group of branch pipes, the inner claw goes deep into the pipe mouth for radial positioning, and the deep tooling is installed in turn to enter the adjustment vertical groove and the adjustment horizontal groove to complete the secondary positioning installation. The outer side is fixed with a limiting claw to limit the outer diameter of the valve. When encountering multiple groups of branch pipes, the driving motor drives the rotating shaft to drive the active bevel gear and the driven bevel gear to engage and transmit the conveying screw to rotate, forming a four-axis linkage state. Multiple groups of outer diameter clamping assemblies slide synchronously in turn to position and clamp the branch pipes of the valve casting, thereby better positioning and installation, and increasing overall stability.

[0019] 2. When the surface of the valve casting is curved due to the influence of the shape, the pipe diameter positioning component gradually approaches the valve casting along the slide rail through the sliding sleeve, and the curved fitting plate is successively abutted against the outer diameter of the valve casting. As the degree of extrusion and fitting varies, the cylinder drives the push column to drive the curved fitting plate to form a reaction force support, and transmits the vibration through the spring sleeve to form a reverse reduction effect to prevent contact loosening.

[0020] 3. With each rotation of the conveying screw, the linkage control mechanism is used. The first turntable drives the second turntable through the first conveyor belt. The second turntable rotates through the curved push frame to drive the third turntable to rotate. When the third turntable rotates one circle, it drives the fourth turntable to rotate, so that its transmission screw pushes the pipe diameter positioning component to move step by step. This can better control the movement posture, meet the clamping operation of the valve casting, and increase the overall positioning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the dedicated positioning device of the present invention;

[0022] Figure 2 A schematic diagram of a positioning platform for a dedicated positioning device of the present invention;

[0023] Figure 3 A schematic diagram of the positioning platform of the special positioning device of the present invention from another angle;

[0024] Figure 4 This is a schematic diagram of the assembly of the positioning platform and outer diameter clamping assembly of the special positioning device of the present invention;

[0025] Figure 5 A schematic diagram of a conveying screw of the special positioning device of the present invention;

[0026] Figure 6 This is a schematic diagram of the assembly of the pipe diameter positioning component and the linkage control mechanism of the special positioning device of the present invention;

[0027] Figure 7 A schematic diagram of the pipe diameter positioning assembly of the special positioning device of the present invention from another angle;

[0028] Figure 8 A schematic diagram of the outer diameter clamping assembly of the special positioning device of the present invention;

[0029] Figure 9 This is a schematic diagram from another angle of the outer diameter clamping assembly of the special positioning device of the present invention.

[0030] Explanation of reference numerals: 1. Positioning platform; 2. Pipe diameter positioning assembly; 3. Drive screw; 4. Linkage control mechanism; 5. Outer diameter clamping assembly; 101. Pillar; 102. Positioning plate; 103. Auxiliary slide; 104. Guide groove; 105. Positioning hole; 106. Through hole; 107. Shock-absorbing plate; 108. Mounting groove; 109. Inner cavity; 110. Top sleeve; 111. Drive motor; 112. Rotating shaft; 113, connecting column; 114, driving bevel gear; 115, driven bevel gear; 116, connecting shaft; 117, positioning collar; 118, conveying screw; 119, corresponding plate; 120, conducting column; 201, shock absorber box; 202, shock absorber chamber; 203, balancing sleeve; 204, cylinder; 205, slide rail; 206, limit block; 207, guide wheel; 208, sliding sleeve; 209, Shock-absorbing sleeve; 210, curved laminating plate; 211, spring sleeve; 212, push column; 401, first turntable; 402, first conveyor belt; 403, second turntable; 404, center disk; 405, deflection block; 406, curved push rack; 407, rebound sleeve; 408, third turntable; 409, fourth turntable; 410, second conveyor belt; 411, connection box; 412, protective sleeve; 501 , reinforcing plate; 502, adjusting vertical slot; 503, adjusting horizontal slot; 504, special limiting hole; 505, stabilizing plate; 506, threaded sleeve; 507, fixed limiting claw; 508, oblique bracket; 509, adapter plate; 510, adapter hole; 511, rotating rod; 512, inner claw; 513, guide hole; 514, fixing frame; 515, adjusting tension spring; 516, positioning bolt; 517, movable slot. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and examples.

[0032] See also Figure 1-2 The present invention provides an embodiment: a precision manufacturing positioning device for valve casting cutting, comprising a positioning platform 1, a pipe diameter positioning component 2, a drive screw 3, a linkage control mechanism 4 and an outer diameter clamping component 5; the positioning platform 1 is provided with outer diameter clamping components 5 that can be displaced from far to near for positioning and clamping the outer diameter of the valve casting, and the positioning platform 1 is provided with pipe diameter positioning components 2 that can be slidably operated to clamp and position the pipe diameter on the valve near the corners on all four sides, and the positioning platform 1 is provided with a linkage control mechanism 4 that controls the sliding of the outer diameter clamping component 5 and the linkage displacement of the pipe diameter positioning component 2 synchronously, and a drive screw 3 that controls the far and near displacement is provided between the linkage control mechanism 4 and the pipe diameter positioning component 2.

[0033] See also Figure 2-4In this embodiment, pillars 101 are provided at the corners around the bottom of the positioning platform 1, a positioning plate 102 is provided at the top center of the positioning platform 1, auxiliary sliding grooves 103 for the sliding operation of the pipe diameter positioning component 2 are symmetrically opened near the corners on the positioning platform 1, guide grooves 104 for the sliding of the outer diameter clamping component 5 are opened at the four sides of the positioning platform 1, and positioning holes 105 are opened along the two sides of the guide groove 104. Through holes 106 are opened on the outside of the positioning platform 1 to communicate with the guide groove 104, and shock-absorbing protective plates 107 are provided on the outer cover of the through holes 106. A mounting groove 108 is opened at the bottom center of the positioning platform 1, and an inner cavity 109 connected to the guide groove 104 is opened in the center of the positioning platform 1. A top sleeve 110 is provided on the top of the inner cavity 109, and a rotating shaft 114 is provided inside the inner cavity 109. A connecting column 113 corresponding to the top sleeve 110 is coaxially provided on the connecting sleeve 114, and a driving bevel gear 114 is fixedly connected between the rotating shaft 114 and the connecting column 113. A driving motor 111 is provided at the bottom of the driving bevel gear 114, and four sets of driven bevel gears 115 that are engaged in transmission are provided on the driving bevel gear 114. A connecting shaft 116 is provided at one end of the driven bevel gear 115, and a conveying screw 118 is provided at one end of the connecting shaft 116. A positioning collar 117 for protection and support is sleeved on the connecting shaft 116, and a corresponding disk 119 is provided at the end of the conveying screw 118 away from the driven bevel gear 115. A conductive column 120 is provided at the center of the corresponding disk 119. The driving motor 111 drives the rotating shaft 114 to drive the driving bevel gear 114 to engage with the driven bevel gear 115 to rotate the conveying screw 118.

[0034] Specifically, the valve casting is placed on the positioning plate 102, and the valve casting has several branch pipes. The adjustment direction corresponds to the pipe diameter positioning component 2 and the outer diameter clamping component 5. The driving motor 111 drives the rotating shaft 114 to drive the active bevel gear 114 and the driven bevel gear 115 to engage and transmit the conveying screw 118 to rotate, forming a four-axis linkage state.

[0035] See also Figure 3-5 In this embodiment, the pipe diameter positioning assembly 2 includes a shock-absorbing box 201, a shock-absorbing chamber 202 is opened inside the shock-absorbing box 201, a sliding sleeve 208 is provided at the bottom center of the shock-absorbing box 201, and a sliding rail 205 fixedly connected to the positioning platform 1 is correspondingly provided at the bottom of the sliding sleeve 208, and two groups of guide wheels 207 are symmetrically provided at the bottom of the shock-absorbing box 201. A plurality of shock-absorbing sleeves 209 are linearly arrayed on a surface of the shock-absorbing box 201 close to the center of the positioning platform 1, and a pushing column 212 is provided at one end of the shock-absorbing sleeve 209, and a curved fitting plate 210 is provided at one end of the pushing column 212. A balancing sleeve 203 is provided at the end of the pushing column 212 away from the curved fitting plate 210, and a spring sleeve 211 is provided between the balancing sleeve 203 and the pushing column 212. A spring damper is provided inside the spring sleeve 211, and a cylinder 204 corresponding to the pushing column 212 is provided on the balancing sleeve 203;

[0036] Specifically, the cylinder 204 drives the push column 212 to drive the curved fitting plate 210 to abut against the outer diameter of the valve casting pipe in turn. As the degree of extrusion and fitting varies, the cylinder 204 drives the push column 212 to drive the curved fitting plate 210 to form a reaction force support, and transmits the vibration through the spring sleeve 211 to form a reverse mitigation effect.

[0037] See also Figure 4-6 In this embodiment, the linkage control mechanism 4 includes a first turntable 401, a connection box 411 and a second turntable 403. The first turntable 401 and the second turntable 403 are arranged in parallel. The outer periphery of the first turntable 401 and the second turntable 403 is provided with a first transmission belt 402. The center of the second turntable 403 is provided with a center disk 404. The center disk 404 is eccentrically provided with a deflection block 405. There are four groups of connection boxes 411. The four groups of connection boxes 411 are arranged at the corners around the positioning platform 1. The top of the connection box 411 A protective sleeve 412 is provided that is sleeved around the outside of the transmission screw 3. A third turntable 408 is provided at the center of the connecting box 411. A curved push rack 406 is provided between the third turntable 408 and the second turntable 403. A rebound sleeve 407 is provided between the curved push rack 406 and the deflection block 405. A spring rubber damper is provided inside the rebound sleeve 407. A fourth turntable 409 is provided above the third turntable 408 and sleeved around the end of the transmission screw 3. A second transmission belt 410 is provided around the outer periphery of the fourth turntable 409 and the third turntable 408.

[0038] Specifically, as the conveying screw 118 turns to the first turntable 401, it drives the second turntable 403 through the first conveyor belt 402. The second turntable 403 rotates through the curved push rack 406 to drive the third turntable 408 to turn. When the third turntable 408 rotates one circle, it drives the fourth turntable 409 to rotate, so that its transmission screw 3 drives the shock absorber box 201 to move along the slide rail 205 through the sliding sleeve 208, and the synchronous guide wheel 207 guides the operation through the auxiliary slide groove 103.

[0039] See also Figure 5-8 In this embodiment, the outer diameter clamping assembly 5 includes a reinforcing plate 501, a stabilizing plate 505 is provided at the bottom of the reinforcing plate 501, an adjusting vertical slot 502 is provided in the center of the reinforcing plate 501, and an adjusting horizontal slot 503 is linearly provided in the adjusting vertical slot 502 from bottom to top, and a dedicated limiting hole 504 is provided at both ends of the adjusting horizontal slot 503, a threaded sleeve 506 is provided at the bottom of the stabilizing plate 505, and multiple sets of fixed limiting claws 507 are linearly provided on both sides of the reinforcing plate 501, and oblique brackets 508 are linearly provided on both sides of the upper edge of the reinforcing plate 501, and an adapter plate 509 is provided at the lower end of the oblique bracket 508, and an adapter hole 510 is provided in the center of the adapter plate 509;

[0040] Specifically, the conveying screw 118 turns so that its threaded sleeve 506 drives the reinforcing plate 501 to move to the corresponding position, and the inner claw 512 penetrates into the pipe mouth for radial positioning, and the deep-diving tooling is installed in turn to enter the adjustment vertical groove 502 and the adjustment horizontal groove 503 to complete the secondary positioning installation.

[0041] See also Figure 7-9 In this embodiment, movable grooves 517 are formed on both sides of the edge of the side of the reinforcing plate 501 away from the oblique bracket 508. A rotating rod 511 is provided inside the movable groove 517. An inner claw 512 is linearly provided on the rotating rod 511. A guide hole 513 is formed in the center of the inner claw 512. A fixing frame 514 is provided on the top of the reinforcing plate 501. An adjustment spring 515 extending to the rotating rod 511 is laterally provided on the top of the fixing frame 514. A spring rubber damping layer is provided inside the adjustment spring 515. A positioning bolt 516 is provided in the middle of the adjustment spring 515 at a position corresponding to the fixing frame 514.

[0042] Specifically, the limiting claw 507 is fixed to limit the outer diameter of the valve, and the adapter plate 509 at the end of the inclined frame and the adapter hole 510 are used to position it in the positioning hole 105 for installation. The positioning bolt 516 drives the adjustment spring 515 to tighten and support its inner claw 512, thereby providing inward buckle support for the pipeline and completing the reinforcement.

[0043] Through the above steps, when encountering multiple sets of branch pipes, the driving motor 111 drives the rotating shaft 114 to drive the active bevel gear 114 and the driven bevel gear 115 to engage and transmit the conveying screw 118 to rotate, forming a four-axis linkage state. Multiple sets of outer diameter clamping components 5 slide synchronously in turn to position and clamp the branch pipes of the valve casting, thereby better positioning and installing, and increasing the overall stability performance.

[0044] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A positioning device for precision manufacturing valve casting cutting, comprising a positioning table (1); characterized in that: The invention also includes a pipe diameter positioning component (2), a transmission screw (3), a linkage control mechanism (4) and an outer diameter clamping component (5); the positioning platform (1) is provided with outer diameter clamping components (5) that can be displaced from far to near for positioning and clamping the outer diameter of the valve casting; the positioning platform (1) is provided with pipe diameter positioning components (2) that can be slidably operated to clamp and position the pipe diameter on the valve at the four corners; the positioning platform (1) is provided with a linkage control mechanism (4) that controls the linkage displacement of the outer diameter clamping component (5) and the sliding synchronous belt pipe diameter positioning component (2); and a transmission screw (3) that controls the far and near displacement is provided between the linkage control mechanism (4) and the pipe diameter positioning component (2).

2. The precision manufacturing valve casting cutting special positioning equipment according to claim 1 is characterized by: The bottom corners of the positioning platform (1) are all provided with pillars (101), the top center of the positioning platform (1) is provided with a positioning plate (102), auxiliary sliding grooves (103) for the sliding operation of the pipe diameter positioning component (2) are symmetrically opened near the corners on the positioning platform (1), guide grooves (104) for the sliding of the outer diameter clamping component (5) are all opened on the positioning platform (1), positioning holes (105) are opened along both sides of the guide groove (104), through holes (106) are opened on the outside of the positioning platform (1) and connected to the guide groove (104), and a shock-absorbing protective plate (107) is provided on the outer cover of the through hole (106), a mounting groove (108) is opened at the bottom center of the positioning platform (1), an inner cavity (109) connected to the guide groove (104) is opened in the center of the positioning platform (1), and a top sleeve (110) is provided on the top of the inner cavity (109).

3. The precision manufacturing valve casting cutting special positioning equipment according to claim 2 is characterized by: A rotating shaft (114) is provided inside the inner cavity (109), a connecting column (113) corresponding to the top sleeve (110) is coaxially provided on the connecting sleeve (114), a driving bevel gear (114) is fixedly connected between the rotating shaft (114) and the connecting column (113), a driving motor (111) is provided at the bottom of the driving bevel gear (114), four groups of driven bevel gears (115) in transmission engagement are provided on the driving bevel gear (114), one end of the driven bevel gear (115) is provided with a connecting shaft (116), and the connecting shaft (116) is provided at the bottom of the driven bevel gear (115). A conveying screw (118) is provided at one end of the connecting shaft (116), a positioning collar (117) for protection and support is sleeved on the connecting shaft (116), a corresponding disk (119) is provided at one end of the conveying screw (118) away from the driven bevel gear (115), a conducting column (120) is provided at the center of the corresponding disk (119), and a driving motor (111) drives the rotating shaft (114) to drive the active bevel gear (114) and the driven bevel gear (115) to mesh and transmit the conveying screw (118) to rotate.

4. The precision manufacturing valve casting cutting special positioning equipment according to claim 1 is characterized by: The pipe diameter positioning assembly (2) includes a shock-absorbing box (201), a shock-absorbing cavity (202) is provided inside the shock-absorbing box (201), a sliding sleeve (208) is provided at the center of the bottom of the shock-absorbing box (201), a sliding rail (205) fixedly connected to the positioning platform (1) is correspondingly provided at the bottom of the sliding sleeve (208), and two sets of guide wheels (207) are symmetrically provided at the bottom of the shock-absorbing box (201).

5. The precision manufacturing valve casting cutting special positioning equipment according to claim 4 is characterized by: A plurality of groups of shock-absorbing sleeves (209) are provided in a linear array on a side of the shock-absorbing box (201) close to the center of the positioning platform (1); a push column (212) is provided at one end of the shock-absorbing sleeve (209); a curved laminating plate (210) is provided at one end of the push column (212); a balancing sleeve (203) is provided at one end of the push column (212) away from the curved laminating plate (210); a spring sleeve (211) is provided between the balancing sleeve (203) and the push column (212); a spring damper is provided inside the spring sleeve (211); and a cylinder (204) corresponding to the push column (212) is provided on the balancing sleeve (203).

6. The precision manufacturing valve casting cutting special positioning equipment according to claim 1 is characterized by: The linkage control mechanism (4) comprises a first turntable (401), a connection box (411) and a second turntable (403). The first turntable (401) and the second turntable (403) are arranged in parallel. A first transmission belt (402) is provided on the periphery of the first turntable (401) and the second turntable (403). A center disk (404) is provided at the center of the second turntable (403). A deflection block (405) is eccentrically provided on the center disk (404). Four groups of connection boxes (411) are provided. The four groups of connection boxes (411) are arranged at the corners around the positioning platform (1). A protective sleeve (412) is provided on the top of the connection box (411) and is sleeved on the outside of the transmission screw (3).

7. The precision manufacturing valve casting cutting special positioning equipment according to claim 6 is characterized by: A third rotary disk (408) is provided at the center of the connecting box (411), a curved push rack (406) is provided between the third rotary disk (408) and the second rotary disk (403), a rebound sleeve (407) is provided between the curved push rack (406) and the deflection block (405), a spring rubber damper is provided inside the rebound sleeve (407), a fourth rotary disk (409) is provided above the third rotary disk (408) and is sleeved on the end of the transmission screw (3), and a second transmission belt (410) is provided on the outer periphery of the fourth rotary disk (409) and the third rotary disk (408).

8. The precision manufacturing valve casting cutting special positioning equipment according to claim 1 is characterized by: The outer diameter clamping assembly (5) includes a reinforcing plate (501), a stabilizing plate (505) is provided at the bottom of the reinforcing plate (501), an adjusting vertical slot (502) is provided at the center of the reinforcing plate (501), and adjusting transverse slots (503) are linearly provided in the adjusting vertical slot (502) from bottom to top, and dedicated limiting holes (504) are provided at both ends of the adjusting transverse slot (503).

9. The precision manufacturing valve casting cutting special positioning equipment according to claim 8, characterized in that: A threaded sleeve (506) is provided at the bottom of the stabilizing plate (505), multiple sets of fixed limiting claws (507) are linearly provided on both sides of the reinforcing plate (501), and oblique brackets (508) are linearly provided at both edges of the upper side of the reinforcing plate (501), an adapter plate (509) is provided at the lower end of the oblique bracket (508), and an adapter hole (510) is opened in the center of the adapter plate (509).

10. The precision manufacturing valve casting cutting special positioning equipment according to claim 9, characterized in that: A movable groove (517) is provided at both edges of one side of the reinforcing plate (501) away from the oblique bracket (508), a rotating rod (511) is provided inside the movable groove (517), an inner claw (512) is linearly provided on the rotating rod (511), a guide hole (513) is provided at the center of the inner claw (512), a fixing frame (514) is provided on the top of the reinforcing plate (501), an adjusting spring (515) extending to the rotating rod (511) is provided laterally on the top of the fixing frame (514), a spring rubber damping layer is provided inside the adjusting spring (515), and a positioning bolt (516) is provided at the middle of the adjusting spring (515) corresponding to the position of the fixing frame (514).

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