CN218363255U - Concentric positioning clamp for assembling circulator - Google Patents

Abstract

The utility model relates to a concentric positioning fixture for assembling a circulator, which comprises a base, wherein a cavity positioning groove is arranged in the middle of the base and is radiated outwards to form a plurality of slide block grooves, and a movable positioning slide block component is arranged in each slide block groove; the top surface of the positioning slide block component is provided with a convex driving pin and a working end extending to the center of the base; a plurality of driving grooves are formed in the bottom of the upper cover, the grooves are evenly distributed around the center of the upper cover, and the driving grooves are distance-variable kidney-shaped grooves. When the fixture works, the upper cover and the base are connected through the stud but not fixed, the upper cover is rotated to be placed on the top, the semi-finished product of the annular device is placed into the cavity positioning groove, then the upper cover is rotated, the driving groove of the upper cover drives the driving pin to drive the positioning sliding block assembly to synchronously move towards the center of the base, and the working end of the positioning sliding block assembly simultaneously pushes the central conductor and the ferrite substrate from multiple directions to enable the central conductor and the ferrite substrate to be in concentric positions. The utility model discloses an anchor clamps have concentric positioning accuracy height, the assembly uniformity is good, and simple structure, easy operation, the extensive advantage of usage.

Description

Concentric positioning clamp for assembling circulator

Technical Field

The utility model relates to a circulator technical field especially relates to an equipment circulator's concentric positioning fixture.

Background

The circulator is an important microwave ferrite device and is widely applied to wireless transceiving systems.

The circulator is typically a stack of multiple materials (substrates) within the chamber, with the final (uppermost) cover plate and chamber being connected to contain the materials therein. The stacked material comprises a central conductor, ferrite substrates positioned on the upper side and the lower side of the central conductor and other layered components, assembly gaps are formed among the central conductor, the ferrite substrates and other materials and the inner wall of the cavity, and the conditions of material center position deviation and non-concentricity are easy to occur if no effective centering mode is ensured during assembly. To ensure better performance of the circulator, the ferrite substrate and the middle conductor need to be well matched, and the material has higher concentricity requirement when being assembled.

There are also some clamps in the prior art to ensure the concentricity of the assembly of the circulator. For example, chinese patent CN 213304319U discloses an assembling device for a circulator, which includes at least three centering mechanisms disposed around a circulator to be assembled, taking three centering mechanisms as an example, the three centering mechanisms are arranged at an included angle of 90 °, and pushing mechanisms of the centering mechanisms respectively push rods to contact the middle circulator, so as to perform a positioning function. The push rods of the centering mechanism of the scheme are respectively controlled by the three pushing mechanisms, so that the synchronism cannot be ensured; the operation is complex, and the push rods are arranged at an included angle of 90 degrees and are not directly opposite to the center of the circulator, so that the assembly concentricity precision of the circulator is not high.

There are also positioning mechanisms provided in the automatic assembling machine. For example, CN 210232813U discloses a centering fixture for an automatic assembly machine of an isolator, wherein a cavity of the isolator is placed in the center of a fixture body, three holes are formed in the cavity, and three horizontal push rods are arranged at the opposite positions of the holes; when the ferrite substrate is placed, the cylinder pushes up three synchronous connecting rings to drive three vertical ejector rods to ascend, the vertical ejector rods are in butt joint with the inclined surfaces of the horizontal ejector rods, and the three vertical ejector rods push out the horizontal ejector rods outwards; then, the vertical ejector rod descends, the horizontal ejector rod resets, the head part of the horizontal ejector rod abuts against the ferrite substrate, and the ferrite substrate is adjusted to be concentric with the cavity. In the patent, three synchronous connecting rings drive three horizontal ejector rods, and are still separately controlled, so that the action synchronism cannot be ensured, and the circulator cannot achieve high centering precision; the mechanism is also complicated; three more holes are also formed in the wall body of the circulator, so that the process steps are increased.

In view of the above two examples and other solutions of the assembling jig for the circulator, the assembling jig of the prior art has the following disadvantages: first, the centering push rods (devices) for positioning the center conductor or the substrate of the circulator are respectively controlled by respective power mechanisms, the synchronicity is poor, the push rods are generally provided with return springs and are elastic, the deviation of the center conductor or the ferrite substrate of the circulator relative to a cavity is caused due to the poor synchronicity of the push rods, the concentricity is poor, the assembly precision of the circulator is low, the product consistency is poor, and therefore the electrical performance of the circulator is seriously affected, the first purpose of the assembly fixture is to improve the concentricity precision of the circulator assembly, and obviously, some fixtures in the prior art cannot meet the high-precision requirement. Second, many circulator assembly jigs are very complicated in structure, complicated in operation, and high in cost.

SUMMERY OF THE UTILITY MODEL

The shortcoming or not enough to above-mentioned prior art, the to-be-solved technical problem of the utility model is to provide an equipment circulator's concentric positioning fixture, make the concentric precision that the circulator equipment reached high, product property can the uniformity good, simple structure moreover, with low costs, manual operation or be applied to automated machine and all be suitable for.

In order to solve the above technical problem, the utility model discloses have following constitution:

a concentric positioning clamp for assembling a circulator comprises a base, a plurality of movable positioning sliding block assemblies arranged on the base, and an upper cover connected with the base through a plurality of threaded cylindrical pins and nuts; the base is a disc-shaped part, the bottom surface of the base is placed on the platform, the center of the top surface of the base is provided with a cavity positioning groove for accommodating and positioning the cavity of the circulator, at least three long grooves are radially formed from the cavity positioning groove to serve as slider grooves, a plurality of slider grooves are equally divided into circles, the slider grooves are communicated with the cavity positioning groove, and a movable positioning slider assembly is arranged in each slider groove; the positioning slide block assembly comprises a slide block, a positioning claw and a wave ball screw, the slide block is of a cuboid structure, and the bottom surface of the slide block is in contact with the bottom surface of a slide block groove. The top surface is provided with a convex driving pin and a positioning claw groove which is downwards opened from the top surface, the section of the sliding block, which is far away from the center of the base, is provided with a threaded through hole, and a ball screw is arranged in the threaded through hole; the positioning part of the positioning claw is embedded into a positioning claw groove of the sliding block for positioning, a working end extends out from the positioning part to the center of the base, a slender groove is formed from the end part of the working end to the positioning part direction to serve as a pin groove to accommodate a center conductor pin of the circulator, the end surface of the working end is a matching cambered surface and is matched with the outer edge surface of a ferrite substrate of the circulator, the head of a bead screw is propped against the back of the positioning claw, and the position of the positioning claw in the sliding block is finely adjusted by screwing the bead screw, so that the distance between the working end of each positioning sliding block component and the center of the base is equal; the upper cover is provided with a plurality of waist-shaped through holes through which the threaded cylindrical pins pass; at least three driving grooves with the same size are formed in the bottom of the upper cover, the grooves are uniformly distributed around the center of the upper cover, the distance between the corresponding position of each driving groove and the center of the upper cover is equal, the driving grooves are distance-variable kidney-shaped grooves, and the distance from each point on each driving groove to the center of the upper cover is continuously changed from far to near; an operation hole is formed in the center of the upper cover, and the diameter of the operation hole is larger than the outer diameter of the central conductor of the circulator;

when the clamp is assembled, the positioning sliding block components are placed into the sliding block grooves of the base one by one, the waist-shaped through hole of the upper cover is sleeved into the threaded cylindrical pin arranged on the base, the driving pin of each positioning sliding block component is simultaneously embedded into the driving groove of the upper cover, and then the nut above the upper cover is screwed, so that the upper cover can freely rotate without being completely screwed;

when the clamp works, the upper cover is rotated to be placed on the top, the semi-finished circulator is placed in the cavity positioning groove of the base from the operation hole of the upper cover, the pins of the central conductor are respectively embedded into the pin grooves of the positioning claws, then the upper cover is rotated, the driving grooves drive the driving pins of the sliding blocks so as to drive at least three positioning sliding block assemblies to synchronously move towards the center of the base, the working ends of the positioning claws push the central conductor and the ferrite substrate from multiple directions simultaneously, so that the central conductor and the ferrite substrate are in concentric positions, then the nuts are screwed, the upper cover is fixed, and other materials of the circulator are continuously loaded to complete the assembling work of the circulator.

Preferably, the center line of the variable distance kidney-shaped groove of the driving groove is a circular arc or a multi-segment line.

Preferably, the driving groove is seen from the top perspective of the upper cover, along the clockwise direction, the distance between each point in the driving groove and the center of the upper cover is from far to near, and the center line of the driving groove is an arc.

Preferably, the number of the positioning slide assemblies is equal to the number of the slide grooves of the base and the number of the driving grooves of the upper cover, the positions of the positioning slide assemblies correspond to those of the driving grooves of the base, and the positioning slide assemblies are preferably three and are uniformly arranged around the center of the positioning clamp at equal intervals.

Preferably, a T-shaped positioning claw groove is formed in the top surface of the sliding block, a transverse groove of the T-shaped groove is perpendicular to the vertical groove, the transverse groove of the T-shaped groove is parallel to the cross section, close to the center of the base, of the sliding block, two sides of the transverse groove are opened, and one end of the vertical groove is opened; the T-shaped positioning part of the positioning claw is embedded into the positioning claw groove.

Preferably, the threaded holes of the plurality of mounting threaded cylindrical pins on the base are uniformly distributed on a circle taking the center of the base as the circle center, correspondingly, the waist-shaped through holes of the upper cover are also uniformly distributed on the circle taking the center of the upper cover as the circle center, and the two circles have equal diameters so as to ensure that the centers of the connected base and the upper cover are superposed.

Preferably, the cavity positioning groove of the base and the upper edge of the operation hole of the upper cover are provided with larger chamfers so as to facilitate smooth putting of all parts of the circulator.

Preferably, the nut for tightening the upper cover is a cover type nut.

Furthermore, a plurality of handles are uniformly fixed on the outer circumferential surface of the upper cover, so that the upper cover can be conveniently and manually rotated.

Compared with the prior art, the utility model has the advantages of:

the action of at least three positioning sliding block components of the utility model is driven by the upper cover in a unified way, which can ensure the synchronous movement of the positioning sliding block components, and ensure the equal distance between the working end of each positioning sliding block component and the center of the base in addition to the fine adjustment function of the wave ball screw, thereby having higher positioning precision for the circulator; moreover, the positioning claw is simultaneously provided with a pin slot (matched with the central conductor) and a matched cambered surface (matched with the ferrite substrate), so that the concentricity of the central conductor and the ferrite substrate is improved; therefore, utilize the utility model discloses a center conductor of circulator of concentric positioning fixture preparation and ferrite substrate's concentricity can reach and is less than or equal to 0.05mm, and the equipment uniformity of circulator product is better.

The utility model has fewer parts and simpler structure in the overall design; and the positioning claw is finely adjusted by using a ball screw, so that the positioning claw is very simple and feasible. In operation, the utility model discloses as long as positive and negative small amplitude rotates the upper cover, in addition fixed cap nut, just can accomplish the centering action, the operation is very simple, is fit for being applied to in the automation equipment.

Therefore, the utility model discloses an equipment circulator's concentric positioning fixture has concentric positioning accuracy height, circulator assembly uniformity good, and simple structure, easy operation, the extensive advantage of usage.

Drawings

FIG. 1: the utility model discloses an exploded view of a concentric positioning clamp for assembling a circulator;

FIG. 2 is a schematic diagram: the utility model discloses a top view of a concentric positioning clamp of an assembled circulator;

FIG. 3: an exploded view of a circulator to be assembled;

FIG. 4 is a schematic view of: the utility model discloses a positioning slide block assembly drawing;

FIG. 5: the utility model discloses a bottom perspective view of upper cover.

Detailed Description

The conception, the specific structure and the technical effects produced by the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

The utility model discloses the exploded view of the concentric positioning anchor clamps of equipment circulator is seen in figure 1, and the plan view that the assembly was accomplished is seen in figure 2.

As shown in figure 1, the concentric positioning fixture for assembling the circulator comprises a base 1, a plurality of groups of movable positioning slide block assemblies 2 are arranged on the base 1, and an upper cover 4 is connected with the base 1 through a plurality of threaded cylindrical pins 3 and nuts 6. After the whole clamp is assembled, the circulator semi-finished product 8 is placed in the cavity positioning groove 11 in the middle of the base 1, the upper cover 4 is rotated, at least three positioning slide block assemblies 2 simultaneously perform concentric positioning on the circulator ferrite substrate 82 and the central conductor 83 from respective directions, then the position of the upper cover 4 is locked, other parts of the circulator are continuously installed, and subsequent assembly is performed.

The circulator semi-finished product 8 is formed by sequentially and preliminarily assembling a circulator cavity 81, a ferrite substrate 82 and a central conductor 83 shown in fig. 3.

To further explain with fig. 1 and fig. 3 as an example, the base 1 of the present invention is a disc-shaped part, the bottom surface of the base 1 is placed on the platform, the center of the top surface is provided with a cavity positioning groove 11 to accommodate the semi-finished circulator 8, the shape of the cavity positioning groove 11 is determined according to the shape of the circulator cavity 81, so that the circulator cavity 81 cannot move after being placed, for example, the cavity positioning groove 11 in fig. 1 is suitable for the cavity 81 in fig. 3. Three long grooves are radially formed in the base 1 from the cavity positioning groove 11 to serve as slider grooves 12, the three slider grooves 12 are equally divided into circles, namely, the included angle between every two adjacent grooves is 120 degrees, and the slider grooves 12 are communicated with the cavity positioning groove 11.

In fig. 1, the upper edge of the cavity positioning groove 11 is provided with a larger chamfer so as to facilitate the smooth placement of each part of the circulator.

The base 1 is provided with a plurality of threaded holes for fixing the threaded cylindrical pins 3, and preferably, the threaded holes are uniformly distributed on the same circumference with the center of the base 1 as the circle center. The embodiment of fig. 1 provides three threaded cylindrical pins 3 and three threaded holes.

The three slide grooves 12 of the base 1 are respectively provided with a positioning slide assembly 2.

As shown in fig. 4, the positioning slider assembly 2 includes a slider 21, a positioning pawl 22, and a wave ball screw 23.

As can be seen from fig. 1 and 4, the slider 21 has a rectangular parallelepiped structure, and the surface contacting the bottom of the slider groove 12 is the bottom surface. The cuboid has a cylindrical drive pin 211 protruding from the top surface. The slider 21 is also provided with a T-shaped deep groove which is downwards opened from the top surface and is used as a positioning claw groove 212, and a transverse groove of the T-shaped groove is vertical to a vertical groove and is parallel to the cross section of the slider 21 close to the center of the base 1. The two sides are opened, and the vertical groove is opened towards one end of the center of the base 1. A threaded through hole is formed in the section, away from the center of the base 1, of the sliding block 21, and a ball screw 23 is installed in the through hole.

Structure of the positioning pawl 22 with reference to fig. 1 and 4, the T-shaped positioning portion of the positioning pawl 22 is embedded in the positioning pawl groove 212 of the slider 21 to limit the position of the positioning pawl 22, the working end extends from the positioning portion to the center of the base 1, and is in a strip shape, a long and thin groove is formed from the end of the working end to the positioning portion as a pin groove 221 to accommodate the pin of the center conductor 83 of the circulator, and the end surface of the working end is a matching arc surface 222 to match with the outer edge surface of the ferrite substrate 82 of the circulator.

The T-shaped positioning pawl groove 212 of the slider 21 and the T-shaped positioning portion of the positioning pawl 22 may be modified to have other shapes for the purpose of positioning the positioning pawl groove 212 with respect to the positioning pawl 22.

The pin grooves 221 and the fitting arc faces 222 of the positioning claws 22 are shaped to match with the circulator center conductor 83 and the ferrite substrate 82, and if the structural size of a circulator product to be assembled changes, the matching positioning claws 22 can be replaced.

It can be seen from fig. 1 and 4 that, the assembly of the positioning slide block assembly 2, the head sphere of the wave ball screw 23 is pushed against the back of the positioning pawl 22 (not shown), and the positioning pawl 22 can be finely adjusted in the position of the slider 21 by adjusting the displacement of the wave ball screw 23 screwed into the mounting hole, so that after the assembly of the positioning fixture is completed, the distance between the working end of the three positioning pawl 22 and the center of the base 1 is equal, and the consistency of the distance determines the precision of the positioning fixture, thereby determining the concentricity of the center conductor 83 of the circulator and the ferrite substrate 82. The positioning slide block component 2 uses the ball screw 23 as a fine adjustment structure, so that the purpose of fine adjustment of the position of the working end of the positioning claw 22 is achieved simply and accurately.

The upper cover 4 is arranged above the base 1, three driving grooves 42 with the same size are formed in one side (bottom) of the upper cover 4 facing the base 1, the grooves are uniformly distributed around the center of the upper cover 4, and the distance between the corresponding position of each driving groove 42 and the center of the upper cover 4 is the same; each driving groove 42 has a certain depth, not a through hole, the driving groove 42 is a distance-variable kidney-shaped groove, and the distance from each point on the single driving groove 42 to the center of the upper cover 4 varies continuously from far to near. The center line of the driving groove 42 is a circular arc or a multi-segment line.

Fig. 1, 2, and 5 show the structure of the upper lid 4 of this embodiment, and the driving groove 42 is seen from the top perspective of the upper lid 4, and along the clockwise direction, the distance from each point in the driving groove 42 to the center of the upper lid 4 is from far to near,

the upper cover 4 is provided with a plurality of kidney-shaped through holes 41 through which the threaded cylindrical pins 3 pass, and preferably, the kidney-shaped through holes 41 are uniformly distributed on the same circumference with the center of the upper cover 4 as the center of a circle. The embodiment of fig. 1 is provided with 3 kidney-shaped through holes 41.

The circumference of the center of the waist-shaped through hole 41 of the upper cover 4 is equal to the diameter of the circumference of the threaded hole of the threaded cylindrical pin 3 on the base 1, and the waist-shaped through holes 41 correspond to the threaded holes so as to ensure the concentricity of the upper cover 4 and the base 1.

The center of the upper cover 4 is provided with an operation hole 43 for installing the circulator semi-finished product 8, and the diameter of the operation hole 43 needs to be larger than the outer diameter of the pin of the central conductor 83. The upper edge of the operation hole 43 of the upper cover 4 is provided with a large chamfer so as to facilitate the smooth placement of the components of the circulator.

When assembling the concentric positioning clamp of the circulator of the utility model, firstly, the positioning slide block component 2 is assembled, the positioning claws 22 are placed in the slide block 21, the wave bead screws 23 are screwed into the threaded holes, and the screwing positions of the wave bead screws 23 of each concentric positioning clamp are adjusted, so that the distance from the end part of each positioning claw 22 to the driving pin 211 of the slide block 21 is equal; after the positioning slide block assembly 2 is assembled, the positioning slide block assembly is placed into each slide block groove 12 of the base 1 one by one; one end of each threaded cylindrical pin 3 is screwed into a threaded hole of the base 1, the waist-shaped through hole 41 of the upper cover 4 penetrates through the other end of the threaded cylindrical pin 3, the driving pin 211 of each positioning slide block assembly 2 is embedded into each driving groove 42 of the upper cover 4, and then the nut 6 above the upper cover 4 is screwed, but at the moment, the nut 6 cannot be screwed completely, 2 to 3 threads are reserved, and the upper cover 4 can rotate freely.

After the positioning fixture is assembled, the upper cover 4 is rotated anticlockwise to be placed on top, the ring-shaped semi-finished product 8 is placed in the cavity positioning groove 11 of the base 1 from the operation hole 43 of the upper cover 4, the pins of the central conductor 83 are respectively positioned in the pin grooves 221 of the positioning claws 22, then the upper cover 4 is rotated clockwise, the driving groove 42 in the form of a distance-variable kidney-shaped groove of the upper cover 4 pushes each slider 21 to synchronously move towards the center of the base 1, so that the three positioning slider assemblies 2 are driven to synchronously move towards the center of the base 1, and the working end of the positioning claw 22 simultaneously pushes the central conductor 83 and the ferrite substrate 82 from three directions, so that the central conductor 83 and the ferrite substrate 82 are in concentric positions; screwing any one of nuts 6 above upper cover 4 to fix upper cover 4, and fixing center conductor 83 and ferrite substrate 82 at concentric positions; and continuously loading the rest materials from the upper part to finish the assembly work of the circulator.

From the above assembling and working processes of the positioning jig, the position of the driving groove 42 of the upper cover 4 (the distance from the center of the upper cover 4) is matched with the length of the slider groove 12 of the base 1, so that the driving pin 211 of the positioning slider assembly 2 in the slider groove 12 can be inserted into the driving groove 42 of the upper cover 4, and the positioning slider assembly 2 can move for a certain distance.

The relationship between the direction of rotation of the upper cover 4 and the direction of movement of the positioning slider assembly 2 depends on the shape of the variable distance drive slot 42, and it is equally feasible if the shape of the drive slot 42 is reversed from that of the previous embodiment, i.e. the drive slot 42 is located counterclockwise from the center of the upper cover 4 from the far to the near, as viewed from the top of the upper cover 4, so that, when the clamp is operated, the upper cover 4 is first set, and then the upper cover 4 is rotated counterclockwise to center the circulator, and then the cover type nut is locked to fix the upper cover 4.

If the utility model discloses a positioning fixture is used manually, can evenly arrange fixed a plurality of handles (shown in figure 1 or figure 2) on the outer periphery of upper cover 4, conveniently rotate upper cover 4 repeatedly.

The nut 6 is preferably a cap type nut.

The utility model discloses a positioning fixture also can be used for automatic assembly machine, then sets up the automatic mechanism that rotates upper cover 4 according to automatic assembly machine's actual conditions.

The above embodiment has been described by taking three sets of positioning slider assemblies 2 as an example, and it can be easily found from the above description that the number of positioning slider assemblies 2 is equal to the number of slider grooves 12 of the base 1 and the number of driving grooves 42 of the upper cover 4, the positions thereof are corresponding, the positioning slider assemblies are uniformly arranged around the center of the positioning jig at equal intervals, and the number thereof is at least three. Three sets of positioning slider assemblies 2 are preferred because they achieve a centering effect and are of minimal cost.

To sum up, the actions of the at least three positioning sliding block assemblies of the utility model are driven by the upper cover in a unified way, rather than being driven respectively, so that the synchronous movement of the positioning sliding block assemblies can be ensured, and the distances from the working ends of the positioning sliding block assemblies to the center of the base are ensured to be equal by the fine tuning function of the wave ball screw, so that the circulator has higher positioning precision; moreover, the positioning claw of the utility model is provided with a pin groove (matched with the central conductor) and a matching cambered surface (matched with the ferrite substrate), thereby improving the concentricity of the central conductor and the ferrite substrate; therefore, utilize the utility model discloses a center conductor of circulator of concentric positioning fixture preparation and ferrite substrate's concentricity can reach and is less than or equal to 0.05mm, and the equipment uniformity of circulator product is better.

The utility model has fewer parts and simpler structure in the overall design; and the positioning claw is finely adjusted by using a ball screw, so that the positioning claw is very simple and feasible. In operation, the utility model discloses as long as positive and negative small amplitude rotates the upper cover, in addition fixed cap nut, just can accomplish the centering action, the operation is very simple, is fit for being applied to among the automation equipment.

Therefore, the utility model discloses an equipment circulator's concentric positioning fixture has concentric positioning accuracy height, circulator assembly uniformity good, and simple structure, easy operation, the extensive advantage of usage.

The above embodiments are merely illustrative, and not restrictive, of the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications or equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all shall fall within the scope of the claims of the present invention.

Claims (9)

1. The concentric positioning clamp for assembling the circulator is characterized by comprising a base (1), a plurality of movable positioning sliding block assemblies (2) arranged on the base (1), and an upper cover (4) connected with the base (1) through a plurality of threaded cylindrical pins (3) and nuts (6);

the base (1) is a disc-shaped part, the bottom surface of the base is placed on a platform, a cavity positioning groove (11) is formed in the center of the top surface of the base to accommodate and position a cavity (81) of a circulator, at least three long grooves are formed in the cavity positioning groove (11) in a radiation mode to serve as slider grooves (12), a plurality of slider grooves (12) are equally divided into circles, the slider grooves (12) are communicated with the cavity positioning groove (11), and the slider grooves (12) are internally provided with movable positioning slider assemblies (2);

the positioning slide block assembly (2) comprises a slide block (21), a positioning claw (22) and a wave ball screw (23), the slide block (21) is of a cuboid structure, the bottom surface of the slide block (21) is in contact with the bottom surface of the slide block groove (12), a convex driving pin (211) is arranged on the top surface of the slide block, the positioning claw groove (212) is formed in the top surface of the slide block, the section of the slide block (21) far away from the center of the base (1) is provided with a threaded through hole, and the wave ball screw (23) is arranged in the threaded through hole; the positioning part of the positioning claw (22) is embedded into the positioning claw groove (212) of the sliding block (21) for positioning, a working end extends out from the positioning part to the center of the base (1), a slender groove is formed from the end part of the working end to the positioning part direction to serve as a pin groove (221) to accommodate a pin of a center conductor (83) of a circulator, the end surface of the working end is a matching arc surface (222) and is matched with the outer edge surface of a ferrite substrate (82) of the circulator, the head of the bead screw (23) is propped against the back of the positioning claw (22), and the position of the positioning claw (22) in the sliding block (21) is finely adjusted by screwing the bead screw (23), so that the distance between the working end of each positioning sliding block component (2) and the center of the base (1) is equal;

a plurality of kidney-shaped through holes (41) through which the threaded cylindrical pins (3) pass are formed in the upper cover (4); at least three driving grooves (42) with the same size are formed in the bottom of the upper cover (4), the grooves are uniformly distributed around the center of the upper cover (4), the distance between the corresponding position of each driving groove (42) and the center of the upper cover (4) is equal, the driving grooves (42) are distance-variable kidney-shaped grooves, and the distance from each point on a single driving groove (42) to the center of the upper cover (4) is continuously changed from far to near; an operating hole (43) is formed in the center of the upper cover (4), and the diameter of the operating hole (43) is larger than the outer diameter of the central conductor (83) of the circulator;

the driving pin (211) of each positioning slide block component (2) is simultaneously embedded into the driving groove (42) of the upper cover (4).

2. The concentric positioning jig of an assembled circulator of claim 1, wherein the center line of the variable distance kidney slot of the driving slot (42) is a circular arc or a multi-segment line.

3. The concentric positioning jig for assembling a circulator as claimed in claim 1, wherein the driving groove (42) is seen from a top perspective of the upper cover (4), and each point in the driving groove (42) is located from far to near from a center of the upper cover (4) in a clockwise direction, and a center line of the driving groove (42) is a circular arc.

4. The concentric positioning jig of assembled circulator of claim 1, wherein the number of positioning slider assembly (2) is equal to the number of slider grooves (12) of base (1) and the number of driving grooves (42) of upper cover (4), corresponding in position, three in number, and equally spaced around the center of positioning jig.

5. The concentric positioning jig for assembling the circulator as claimed in claim 1, wherein the top surface of the sliding block (21) is provided with the T-shaped positioning claw groove (212), the transverse groove of the T-shaped groove is perpendicular to the vertical groove, the transverse groove of the T-shaped groove is parallel to the cross section of the sliding block (21) close to the center of the base (1), two sides of the transverse groove are open, and one end of the vertical groove is open; the T-shaped positioning part of the positioning claw (22) is embedded into the positioning claw groove (212).

6. The concentric positioning jig for assembling a circulator as claimed in claim 1, wherein the threaded holes for mounting the threaded cylindrical pins (3) on the base (1) are uniformly distributed on a circle centered on the center of the base (1), and correspondingly, the kidney-shaped through holes (41) of the upper cover (4) are also uniformly distributed on a circle centered on the center of the upper cover (4), and the two circles have equal diameters, so as to ensure that the centers of the base (1) and the upper cover (4) after connection are coincident.

7. The concentric positioning jig for assembling the circulator of claim 1, wherein the cavity positioning groove (11) of the base (1) and the upper edge of the operation hole (43) of the upper cover (4) are chamfered to facilitate smooth insertion of the circulator components.

8. Concentric positioning clamp of an assembled circulator as claimed in claim 1, wherein the nut (6) tightening the upper cap (4) is a cap nut.

9. The concentric positioning jig for assembling a circulator as claimed in claim 1, wherein a plurality of handles are uniformly fixed on the outer circumferential surface of the upper cover (4) to facilitate manual rotation of the upper cover (4).

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