CN111390588B

CN111390588B - Special processing upper assembling positioning device for valve body

Info

Publication number: CN111390588B
Application number: CN202010273871.6A
Authority: CN
Inventors: 钱俊; 周杰; 庄阳
Original assignee: Wenzhou Qionglong Technology Co ltd
Current assignee: Chongqing Yuanhua Technology Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2021-07-27
Anticipated expiration: 2040-04-09
Also published as: CN111390588A

Abstract

The invention relates to the technical field of valve machining, in particular to a special machining upper-mounting positioning device for a valve body, which comprises a rotating motor, wherein a rotating shaft of the rotating motor is provided with a mounting base, a mounting vertical plate vertically mounted on the mounting base, a first port of the valve body is attached to the mounting vertical plate, a clamping mechanism and a deviation correcting mechanism are mounted on the mounting vertical plate, the clamping mechanism is used for clamping and fixing the valve body on the mounting vertical plate, and in the process of clamping and fixing the valve body by using the clamping mechanism, a clamping claw and a positioning claw in the deviation correcting mechanism are synchronously used for clamping and fastening connecting ends on two sides of the valve body, so that the axis of the connecting end part is horizontally arranged, the flanging of the connecting end part is ensured to be vertically arranged, the subsequent accurate machining is facilitated, and the technical problem of low machining precision of the connecting end caused by clamping and fixing is solved.

Description

Special processing upper assembling positioning device for valve body

Technical Field

The invention relates to the technical field of valve machining, in particular to a special machining, loading and positioning device for a valve body.

Background

The valve body needs to be locked and positioned through the positioning tool before being machined, but due to the shape specificity of the valve body, in the process of locking and positioning the valve body, the interface ends on two sides of the valve body are extremely easy to cause that the axis of the interface ends cannot be kept horizontal in the loading process, and errors occur when the interface ends are turned or drilled.

In chinese patent No. CN201710561184.2, a fourth-axis rotary indexing processing device of a pump cover special processing center is disclosed, which includes a rotary indexing component for realizing the function of rotary indexing of a workpiece according to a preset angle requirement; the fixture body part is fixedly connected to the rotary indexing part to realize the mounting, positioning and clamping functions of the workpiece; the auxiliary supporting component is connected with the fixture body component, so that the effect of improving the system rigidity of the rotary indexing processing device is realized; the electric control component connected with the servo motor, the proximity switch, the micro switch and the like on the rotary indexing component realizes the functions of setting the initial zero position of the whole device, rotating and indexing positioning at corresponding angles according to the preset program requirement and controlling the start and stop of a machine tool of a machining center, and the whole device finally solves the problem of continuous automatic machining of the pump cover on a large scale with different position machining characteristics on the same machining surface.

However, the above patent still has the technical problems existing in the above background art when applied to the valve body processing in the valve field.

Disclosure of Invention

In order to solve the problems, the invention provides the special processing upper-mounting positioning device for the valve body, which is characterized in that in the process of clamping and fixing the valve body by using the clamping mechanism, the clamping claws and the positioning claws in the deviation correcting mechanism are synchronously used for clamping and fastening the interface ends on two sides of the valve body, so that the axis of the interface end is horizontally arranged, the vertical arrangement of the flanging of the interface end is ensured, the subsequent accurate processing is facilitated, and the technical problem of low processing precision of the interface end caused by clamping and fixing is solved.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a special processing facial make-up positioner of valve body for fixed valve body waiting to process, this valve body include the interface end that main part and this main part of perpendicular set up, this interface end branch is located the both sides of main part, the both ends of main part are first port and second port respectively, include:

the rotating shaft of the rotating motor is provided with a mounting base;

the mounting vertical plate is vertically mounted on the mounting base, and the first port of the valve body is attached to the mounting vertical plate;

the clamping mechanism is arranged on the mounting vertical plate, is used for clamping and fixing the valve body on the mounting vertical plate, and comprises a centering grasping assembly, an edge buckling assembly, a driving assembly for synchronously driving the centering grasping assembly and the edge buckling assembly, and a locking assembly for locking the edge buckling assembly; and

the deviation correcting mechanism is installed on the installation base and comprises a holding component and a deviation correcting component, the holding component comprises holding claws which are arranged correspondingly and synchronously slide below the interface end, the holding claws hold the flanging part of the interface end tightly, the deviation correcting component comprises positioning claws which are arranged correspondingly and rotatably swing below the interface end, and the positioning claws fasten the neck part of the interface end.

As a refinement, the centering gripping assembly comprises:

the three-jaw chuck is arranged at the central position of the mounting vertical plate, a plurality of positioning fingers capable of moving synchronously are arranged at the same distance along the circumference of the axis of one end of the three-jaw chuck, which is abutted against the first port, back to the first port, a rotary socket is arranged at one end of the first port, the rotary socket is arranged in a hexagonal shape, and the rotary socket is correspondingly spliced with a motor shaft in the driving assembly.

As an improvement, the buckle edge assembly comprises:

the clamping blocks are symmetrically arranged at the upper end and the lower end of the valve body in the vertical direction and are arranged in a sliding way along a sliding groove formed in the mounting vertical plate, and a bayonet which is clamped with the edge of the valve body is arranged at one end, which is opposite to the valve body, of each clamping block; and

and the locking screw is vertically arranged on the clamping block and is in threaded fit with the threaded hole in the mounting vertical plate, so that the clamping block is fixed on the mounting vertical plate.

As an improvement, the drive assembly comprises:

the driving motor is arranged on the mounting vertical plate, and a motor shaft on the driving motor is inserted into the rotary socket to drive the three-jaw chuck to work;

the screw rod is vertically arranged, the top of the screw rod is in transmission connection with the driving motor through a belt transmission unit, and the two axial ends of the screw rod are respectively provided with a positive thread and a negative thread; and

the screw rod nut is sleeved on the screw rod, slides oppositely or back to back along the axial direction of the screw rod, and is connected with the corresponding clamping block.

As an improvement, the locking assembly comprises:

the locking gears are connected with the locking screws in a one-to-one correspondence manner;

the locking cylinder is horizontally arranged on the mounting vertical plate and horizontally pushes;

and the locking rack is arranged on the pushing end of the locking cylinder and matched with the corresponding locking gear to lock the locking screw.

As an improvement, the clasping assembly further comprises:

the driving gear is rotatably arranged on the mounting base; and

the driving rack is connected with the holding claws in a one-to-one correspondence mode and is arranged on two sides of the driving gear in a divided mode, the driving rack is arranged on the installation base in a sliding mode, the driving rack is correspondingly matched with the driving gear, and the holding claws are driven to slide along the axial direction of the interface end in the opposite direction or in the opposite direction.

As an improvement, the driving gear is in transmission connection with the driving assembly through a belt transmission unit, and the driving gear is driven to rotate by the driving assembly.

As an improvement, the deviation rectifying assembly further comprises:

the back plate is vertically arranged on the mounting base, an arc-shaped opening for supporting the valve body is formed in the back plate, and the positioning clamping jaw is rotatably and swingably arranged on the back plate; and

the extrusion block, the extrusion block with the setting of location jack catch one-to-one, it is the triangle-shaped setting, and the hypotenuse extrusion on it corresponds the location jack catch makes the rotatory swing of location jack catch.

As an improvement, the extrusion blocks are connected with the driving racks in a one-to-one correspondence mode and slide synchronously along with the driving racks.

As an improvement, the positioning clamping jaw comprises a jaw part matched with the neck part and a handle part arranged on the back plate, and the back plate is provided with a limiting column for limiting the positioning clamping jaw.

The invention has the beneficial effects that:

(1) in the process of clamping and fixing the valve body by using the clamping mechanism, the clamping claws and the positioning claws in the deviation correcting mechanism are synchronously utilized to clamp and fasten the interface ends on the two sides of the valve body, so that the axis of the interface end is horizontally arranged, the vertical arrangement of the flanging of the interface end is ensured, the subsequent accurate processing is facilitated, and the processing precision of the interface end is improved;

(2) according to the invention, the screw rod is in transmission connection with the driving motor by using the belt transmission unit, and the bidirectional screw rod is rotated to drive the clamping block to move to clamp and press the edge of the valve body while the driving motor drives the three-jaw chuck to center the valve body;

(3) according to the invention, the clamping block is provided with the locking screw, the locking cylinder is used for pushing the locking rack to be meshed with the locking gear, so that the locking screw rotates to be locked with the mounting vertical plate, the clamping block is locked on the mounting vertical plate, and the valve body is fixed on the mounting vertical plate;

(4) the driving motor is used for driving the clamping claws to slide oppositely or reversely along the axial direction of the interface end, the flanging of the interface end is clamped, the interface end is positioned, and the interface end is stabilized, so that the interface end cannot be twisted or misplaced and moved due to uneven stress during turning or drilling, and the processing precision is improved;

(5) the deviation rectifying claw is driven by the extrusion block to extrude the deviation rectifying claw through the sliding of the holding claw, so that the deviation rectifying claw is buckled with the neck of the interface end to rectify and rectify the deviation of the valve body, the axis of the interface end part on the valve body is horizontal, and the deviation rectifying claw always supports the interface end in the processing process and is matched with the holding claw to stabilize the whole valve body.

In conclusion, the valve machining device has the advantages of good stability, good balance, high machining precision and the like, and is particularly suitable for the technical field of valve machining.

Drawings

FIG. 1 is a first perspective view of the present invention;

FIG. 2 is a schematic perspective view of the valve body of the present invention;

FIG. 3 is a schematic perspective view of the second embodiment of the present invention;

FIG. 4 is a partial cross-sectional structural schematic of the present invention;

FIG. 5 is a perspective view of a centering-grip assembly according to the present invention;

FIG. 6 is a schematic perspective view of a clamping block according to the present invention;

FIG. 7 is a schematic view of a backside perspective of the present invention;

FIG. 8 is a partial perspective view of the first embodiment of the present invention;

fig. 9 is a partial sectional structural schematic view of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The first embodiment is as follows:

as shown in fig. 1 to 3, a special machining upper-mounting positioning device for a valve body is used for fixing a valve body 1 to be machined, the valve body 1 includes a main body 11 and an interface end 12 arranged perpendicular to the main body 11, the interface end 12 is respectively arranged at two sides of the main body 11, two ends of the main body 11 are respectively a first port 13 and a second port 14, and the special machining upper-mounting positioning device includes:

a rotating shaft of the rotating motor 2 is provided with a mounting base 21;

the mounting vertical plate 3 is vertically mounted on the mounting base 21, and the first port 13 of the valve body 1 is attached to the mounting vertical plate 3;

the clamping mechanism 4 is mounted on the mounting vertical plate 3, is used for clamping and fixing the valve body 1 on the mounting vertical plate 3, and comprises a centering grasping assembly 41, a trimming assembly 42, a driving assembly 43 for synchronously driving the centering grasping assembly 41 and the trimming assembly 42, and a locking assembly 44 for locking the trimming assembly 42; and

the deviation correcting mechanism 5 is mounted on the mounting base 21, and includes a clasping component 51 and a deviation correcting component 52, the clasping component 51 includes a clasping claw 511 which is arranged below the corresponding interface end 12 and slides synchronously, the clasping claw 511 clasps the flanging part 121 of the interface end 12, the deviation correcting component 52 includes a positioning claw 521 which is arranged below the corresponding interface end 12 in a rotating and swinging manner, and the positioning claw 521 clasps the neck part 122 of the interface end 12.

It should be noted that the valve body 1 is sleeved on the centering grasping assembly 41 of the clamping mechanism 4, the centering grasping assembly 41 is expanded to tension and center the valve body 1, the edge fastening assembly 42 fastens the flange of the first port 13 of the valve body 1, meanwhile, the fastening claws 511 in the fastening mechanism fasten the flange portions 121 of the interface end 12 on the two sides of the valve body, and the positioning claws 521 adjust the axis of the interface end 12 to make the axis of the interface end 12 in a horizontal position.

As shown in fig. 5, as a preferred embodiment, the centering gripping member 41 includes:

the three-jaw chuck 411 is arranged at the center of the mounting vertical plate 3, a plurality of synchronously movable positioning fingers 412 are equidistantly arranged at one end, which is abutted against the first port 13, along the circumference of the axis of the first port, of the three-jaw chuck 411, the rotating socket 413 is arranged at one end, which is opposite to the first port 13, of the three-jaw chuck, the rotating socket 413 is arranged in a hexagonal shape, and the rotating socket 413 is correspondingly inserted into a motor shaft in the driving assembly 43.

It should be noted that the motor shaft in the driving assembly 43 rotates to drive the positioning fingers 412 in the three-jaw chuck 411 to synchronously expand outwards to perform tensioning and centering on the valve body 1.

As shown in fig. 3 to 7, as a preferred embodiment, the buckle edge assembly 42 includes:

the clamping blocks 421 are symmetrically arranged at the upper end and the lower end of the valve body 1 in the vertical direction, and are arranged in a sliding manner along the sliding groove 30 formed in the mounting vertical plate 3, and a bayonet 422 clamped with the edge of the valve body 1 is arranged at one end, opposite to the valve body 1, of the clamping blocks 421; and

and the locking screw 423 is vertically arranged on the clamping block 421, is in threaded fit with a threaded hole in the mounting vertical plate 3, and fixes the clamping block 421 on the mounting vertical plate 3.

Further, the driving assembly 43 includes:

the driving motor 431 is installed on the installation vertical plate (3), and a motor shaft on the driving motor 431 is inserted into the rotary socket 413 to drive the three-jaw chuck 411 to work;

the screw rod 432 is vertically arranged, the top of the screw rod 432 is in transmission connection with the driving motor 431 through a belt transmission unit 433, and the two axial ends of the screw rod are respectively provided with a positive thread 434 and a negative thread 435; and

the lead screw nut 436 is sleeved on the lead screw 432, slides oppositely or reversely along the axial direction of the lead screw 432, and is connected with the corresponding clamping block 421.

Further, the locking assembly 44 includes:

the locking gears 441 are correspondingly connected with the locking screws 423 one by one;

the locking cylinder 442 is horizontally arranged on the mounting vertical plate 3 and is used for horizontally pushing;

a locking rack 443, the locking rack 443 being mounted on the pushing end of the locking cylinder 442, which cooperates with the corresponding locking gear 441 to lock the locking screw 423.

It should be noted that, while the three-jaw chuck 411 is driven to be tensioned by the rotation of the driving motor 431, the driving motor 431 drives the screw rod 432 to rotate through the belt transmission unit, so that the screw rod nut 436 moves oppositely along the axial direction of the screw rod 432, so that the clamping block 421 buckles the flanging of the first port 12 of the valve body 1, and then the locking screw 423 is rotated by the cooperation of the locking rack 443 and the locking gear 441 through the pushing of the locking cylinder 442, and is in threaded engagement with the threaded hole on the mounting upright plate 3 to lock the clamping block 421.

As shown in fig. 8 and 9, as a preferred embodiment, the clasping assembly 51 further comprises:

a driving gear 512, wherein the driving gear 512 is rotatably mounted on the mounting base 21; and

the driving rack 513, the driving rack 513 and the clasping claws 511 are connected in a one-to-one correspondence manner, are respectively arranged on two sides of the driving gear 512, and are arranged on the mounting base 21 in a sliding manner, and the driving rack 513 is correspondingly matched with the driving gear 512 to drive the clasping claws 511 to slide in opposite directions or in a back direction along the axial direction of the interface end 12.

Further, the driving gear 512 is in transmission connection with the driving assembly 43 through a belt transmission unit, and the driving gear 512 is driven to rotate by the driving assembly 43.

Further, the deviation rectifying assembly 52 further includes:

the back plate 522 is vertically arranged on the mounting base 21, an arc-shaped opening 523 for supporting the valve body 1 is arranged on the back plate 522, and the positioning claw 521 is rotatably and swingably arranged on the back plate 522; and

the extrusion blocks 524 are arranged in one-to-one correspondence with the positioning claws 521, are arranged in a triangular shape, and the inclined edges on the extrusion blocks 524 extrude the corresponding positioning claws 521 to enable the positioning claws 521 to swing in a rotating manner.

The pressing blocks 524 are connected to the driving racks 513 in a one-to-one correspondence, and slide synchronously with the driving racks 513.

The positioning pawl 521 includes a pawl portion 5211 fitted to the neck portion 122 and a handle portion 5212 attached to the back plate 522, and the back plate 522 is provided with a stopper post 5221 for restricting the positioning pawl 521.

It should be noted that the driving motor 431 synchronously drives the driving gear 512 to rotate through the belt transmission unit, and through the cooperation of the driving rack 513, the clasping claw 511 slides back along the axial direction of the interface end 12 to clasp the flanging part 121 of the corresponding interface end 12, and the clasping claw 511 completes clasping action before the three-jaw chuck 411.

Further, in the process of sliding the clasping claws 511, the pressing blocks 524 connected with the clasping claws 511 are in press fit with the handle portions 5212 of the positioning claws 521, so that the positioning claws 521 are turned over, the neck portions 122 of the interface ends 12 are buckled, and the axis of the interface end 12 is adjusted through the fit of the positioning claws 521 on both sides, so that the axis is in a horizontal state, and the interface end 12 does not have deflection errors in the process of processing.

The working process is as follows:

firstly, the valve body 1 is sleeved on the centering grasping component 41 of the clamping mechanism 4, the motor shaft in the driving component 43 rotates to drive the positioning fingers 412 in the three-jaw chuck 411 to synchronously expand outwards to tension and center the valve body 1, meanwhile, the driving motor 431 drives the screw rod 432 to rotate through the belt transmission unit, so that the screw rod nut 436 moves oppositely along the axial direction of the screw rod 432, the clamping block 421 buckles the flanging of the first port 12 of the valve body 1, the driving motor 431 synchronously drives the driving gear 512 to rotate through the belt transmission unit, the clasping jaws 511 slide backwards along the axial direction of the port 12 through the matching of the driving racks 513 to clasp the flanging parts 121 of the corresponding port 12, the clasping jaws 511 complete clasping action before the three-jaw chuck 411, and in the process of sliding the clasping jaws 511, the extrusion blocks 524 connected with the clasping jaws 511 are in extrusion matching with the handle parts 5212 of the positioning jaws 521, the positioning claws 521 are turned over to buckle the neck part 122 of the interface end 12, the axis of the interface end 12 is adjusted through the matching of the positioning claws 521 at the two sides to enable the axis to be in a horizontal state, and then the locking screw 423 is rotated through the pushing of the locking cylinder 442 and the matching of the locking rack 443 and the locking gear 441 to enable the locking screw 423 to be in threaded matching with the threaded hole on the mounting vertical plate 3 to lock the clamping block 421.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a special processing facial make-up positioner of valve body for fixed valve body (1) of treating processing, this valve body (1) include interface end (12) that main part (11) and perpendicular this main part (11) set up, and this interface end (12) branch is located the both sides of main part (11), the both ends of main part (11) are first port (13) and second port (14) respectively, its characterized in that includes:

the device comprises a rotating motor (2), wherein a rotating shaft of the rotating motor (2) is provided with a mounting base (21);

the mounting vertical plate (3), the mounting vertical plate (3) is vertically mounted on the mounting base (21), and the first port (13) of the valve body (1) is attached to the mounting vertical plate (3);

the clamping mechanism (4) is arranged on the mounting vertical plate (3), is used for clamping and fixing the valve body (1) on the mounting vertical plate (3), and comprises a centering grasping assembly (41), an edge buckling assembly (42), a driving assembly (43) for synchronously driving the centering grasping assembly (41) and the edge buckling assembly (42), and a locking assembly (44) for locking the edge buckling assembly (42); and

the deviation rectifying mechanism (5), the deviation rectifying mechanism (5) is arranged on the mounting base (21), which comprises a clasping component (51) and a deviation rectifying component (52), wherein the clasping component (51) comprises clasping claws (511) which are arranged below the corresponding interface ends (12) and synchronously slide, the holding claw (511) holds the flanging part (121) of the interface end (12), the enclasping component (51) further comprises a driving gear (512) and a driving rack (513), the driving gear (512) is rotatably mounted on the mounting base (21), the driving racks (513) are correspondingly connected with the clasping claws (511) one by one, which are respectively arranged at two sides of the driving gear (512) and are arranged on the mounting base (21) in a sliding way, the driving rack (513) is correspondingly matched with the driving gear (512) to drive the holding claws (511) to slide towards or away from each other along the axial direction of the interface end (12);

the correcting component (52) comprises a positioning claw (521) which is rotationally and swing arranged below the corresponding interface end (12), the positioning claw (521) fastens the neck (122) of the interface end (12), the correcting component (52) further comprises a back plate (522) and an extrusion block (524), the back plate (522) is vertically arranged on the installation base (21), an arc-shaped opening (523) for supporting the valve body (1) is arranged on the back plate, the positioning claw (521) is rotationally and swing arranged on the back plate (522), the extrusion block (524) and the positioning claw (521) are arranged in a one-to-one correspondence mode and are arranged in a triangular shape, and the bevel edge on the extrusion block extrudes the corresponding positioning claw (521), so that the positioning claw (521) swings rotationally.

2. A valve body specific tooling top-mount positioning device according to claim 1 wherein said centering-grip assembly (41) comprises:

three-jaw chuck (411), three-jaw chuck (411) set up in the central point department of installation riser (3) puts, its with be provided with a plurality of synchronous movement's location finger (412) for the one end that first port (13) are contradicted along its axis circumference equidistance, and it dorsad be the one end of first port (13) provided with rotatory socket (413), this rotatory socket (413) are the hexagon setting, its with motor shaft among drive assembly (43) corresponds the grafting.

3. The valve body-specific tooling top-mount positioning device of claim 2, wherein the clinch edge assembly (42) comprises:

the clamping blocks (421) are symmetrically arranged at the upper end and the lower end of the valve body (1) in the vertical direction and are arranged in a sliding manner along a sliding groove (30) formed in the mounting vertical plate (3), and a bayonet (422) clamped with the edge of the valve body (1) is arranged at one end, opposite to the valve body (1), of each clamping block (421); and

and the locking screw (423) is vertically arranged on the clamping block (421) and is in threaded fit with a threaded hole in the mounting vertical plate (3) to fix the clamping block (421) on the mounting vertical plate (3).

4. A valve body specific tooling top-loading positioning device according to claim 3 wherein said drive assembly (43) comprises:

the driving motor (431) is installed on the installation vertical plate (3), and a motor shaft on the driving motor (431) is inserted into the rotary socket (413) to drive the three-jaw chuck (411) to work;

the screw rod (432) is vertically arranged, the top of the screw rod (432) is in transmission connection with the driving motor (431) through a belt transmission unit (433), and the two axial ends of the screw rod are respectively provided with a positive thread (434) and a negative thread (435); and

the lead screw nut (436) is sleeved on the lead screw (432), slides oppositely or back to back along the axial direction of the lead screw (432), and is connected with the corresponding clamping block (421).

5. A valve body specific tooling top-loading positioning apparatus as set forth in claim 3 wherein said locking assembly (44) comprises:

the locking gears (441) are correspondingly connected with the locking screws (423) one by one;

the locking cylinder (442) is horizontally arranged on the mounting vertical plate (3) and is used for horizontally pushing;

a locking rack (443), the locking rack (443) being mounted on a pushing end of the locking cylinder (442), which cooperates with the corresponding locking gear (441) to lock the locking screw (423).

6. The valve body special machining assembling and positioning device is characterized in that the driving gear (512) is in transmission connection with the driving assembly (43) through a belt transmission unit, and the driving gear (512) is driven to rotate by the driving assembly (43).

7. The valve body special machining assembling and positioning device as claimed in claim 1, wherein the extrusion blocks (524) are connected with the driving racks (513) in a one-to-one correspondence manner and slide synchronously with the driving racks (513).

8. The valve body special-purpose machining assembling and positioning device according to claim 1, characterized in that the positioning claw (521) comprises a claw portion (5211) matched with the neck portion (122) and a handle portion (5212) mounted on the back plate (522), and the back plate (522) is provided with a limiting column (5221) for limiting the positioning claw (521).