CN219953865U - Bonding tool for air bearing support rod - Google Patents

Abstract

The utility model provides an air bearing support rod bonding tool which can solve the problems that in the prior art, when a sphere of a split support rod is bonded with a rod body, contact is incomplete, bonding is unreliable and test precision is affected. The air bearing support rod bonding tool comprises a bottom plate, a support rod and an elastic pressurizing component, wherein a containing groove is formed in the bottom plate, a support rod body is vertically inserted into the containing groove, the elastic pressurizing component comprises an elastic arm, and the elastic pressurizing component can move to a first position and a second position; when in the first position, the elastic arm generates elastic deformation, and the free end of the elastic arm is propped against the top of the sphere to apply pressure to the sphere; in the second position, the elastic arm resumes its deformation and disengages from the sphere. When the air bearing support rod bonding tool is used for bonding support rods, the bottom of the support rod sphere can be tightly bonded with the conical concave part at the top end of the rod body, the influence of the change of adhesive on the measurement accuracy of the measuring machine is reduced, and the measurement accuracy is improved.

Description

Bonding tool for air bearing support rod

Technical Field

The utility model relates to the technical field of tool clamps, in particular to a tool clamp used for bonding an air bearing support rod.

Background

High-end precision test equipment generally adopts an air bearing matched with a precision guide rail as a supporting and guiding mechanism. The air bearing is connected with the equipment through a supporting rod. The guide rail plane cannot meet the ideal high-precision planeness requirement under the influence of processing factors, so flexible connection is usually adopted between the air bearing and the support rod to compensate planeness errors of the guide rail plane.

Specifically, a small hemispherical concave feature is usually machined on the air bearing, and a supporting rod connected with the air bearing usually adopts a hemispherical and rod integrated structure, namely, one end of the supporting rod connected with the air bearing is machined with a hemispherical body, and the other end of the supporting rod is machined with external threads to be connected with equipment to provide support. The structural support rod is characterized in that the hemispheroids are integrated with the rod, so that the processing difficulty is relatively high, the processing cost is relatively high, the efficiency is relatively low, and the processing precision of the hemispheroids is relatively low compared with that of the whole hemispheroids.

In order to solve the problems of the integral support rod, a split support rod is formed by two parts, namely a sphere is an independent part, a rod body is an independent part, and the two parts are connected by adhesive. The sphere adopts a standard steel ball, so that the precision is easy to ensure; the top end of the rod body is processed into a concave conical characteristic, and the standard ball is adhered into the concave conical characteristic of the rod body by adopting adhesive. The implementation mode has the advantages that the processing difficulty is small, the processing efficiency is improved, the cost is reduced, and the precision of parts is improved.

However, for the split type air bearing support rod, the ideal condition is that the ball body and the rod body are in hard contact and fit, but in actual production, the fact that the bottom of the standard steel ball is only in hard contact with the conical concave characteristic of the rod body due to the solidification of glue and the like occurs between the ball body and the support rod. In the long-term practical use process of the whole support rod produced in this way, the solidified adhesive can change the relative positions of the standard steel ball and the rod body due to the change of the environment, which further causes the change of the gap between the air bearing and the guide surface in the ventilation state, generally causes the air gap to be enlarged, reduces the rigidity, causes the resonance amplitude of the air bearing to be enlarged, causes inaccurate test, and has measurement jump points for example. If the air-floating gap is further increased, air vibration may be caused.

Disclosure of Invention

The utility model provides an air bearing support rod bonding tool which can solve the problem that in the prior art, the bonding of a sphere and a rod body of a split support rod is unreliable and the testing precision is affected.

In order to solve the technical problems, the technical scheme adopted by the utility model is that the bonding tool for the support rod of the air bearing comprises the following components:

the bottom plate is provided with a horizontal supporting surface, a containing groove is formed on the horizontal supporting surface, and the axis of the containing groove is perpendicular to the horizontal supporting surface;

the support rod comprises a rod body and a ball body, the rod body is vertically inserted into the accommodating groove, a conical concave part is formed at the top end of the rod body, the ball body is arranged in the conical concave part, and the bottom of the ball body is adhered to the conical concave part;

an elastic pressing member including an elastic arm, the elastic pressing member being movable to a first position and a second position; in a first position, the resilient arms are elastically deformed with their free ends resting against the spherical top of the sphere to exert pressure on the sphere; in the second position, the elastic arm resumes its shape and disengages from the sphere.

The resilient arm is pivotally movable to the first position and the second position.

The elastic pressing component further comprises a cylindrical guide part which is in sliding fit with the guide post, and the fixed end of the elastic arm is fixedly connected to the guide part.

The guide post is a cylindrical column, the guide part is cylindrical correspondingly, and the guide part can rotate relative to the guide post.

The fixed end of the elastic arm is fixedly connected to the top of the guide part, and the height of the elastic arm from the fixed end to the free end of the elastic arm is gradually reduced.

The elastic pressurizing component is of an integrated structure, and the fixed end of the elastic arm and the guide part are in arc transition.

The elastic arm is a spring piece.

The accommodating groove is internally provided with a cylindrical supporting component, the top end of the supporting component is positioned above the horizontal supporting surface, and the rod body is vertically inserted into the supporting component.

The guide post comprises a post part and a root part, wherein the cross section diameter of the root part is larger than that of the post part, a mounting hole is formed in the top surface of the root part, the bottom end of the post part is in interference fit with the mounting hole, a stud is formed in the bottom end of the root part, a threaded connection hole is formed in the bottom plate, and the stud is in threaded fastening connection with the threaded connection hole.

The number of the accommodating grooves is multiple, the supporting rods are arranged in one-to-one correspondence with the accommodating grooves, and the elastic pressurizing parts are arranged in one-to-one correspondence with the accommodating grooves;

the bottom plate is provided with a handle, and/or the bottom plate is provided with a plurality of limiting rods, the limiting rods are arranged at the corners of the bottom plate, and the top end positions of the limiting rods are higher than the top end positions of the supporting rods and the top end positions of the elastic pressurizing parts.

Compared with the prior art, the utility model has the following advantages and positive effects: when the split type supporting rod bonding tool for the air bearing is adopted for bonding the split type supporting rods of the air bearing, the rod bodies of the supporting rods are vertically inserted into the accommodating grooves on the bottom plate, then after the conical concave parts of the rod bodies are coated with adhesive, the spheres are placed in the conical concave parts, so that the elastic pressing parts move to the first positions, the elastic arms of the elastic pressing parts elastically deform, the free ends of the elastic pressing parts abut against the spherical tops of the spheres of the supporting rods to apply pressure to the spheres, under the continuous pressure action of the elastic arms, the bottoms of the spheres of the supporting rods are tightly attached to the conical concave parts at the top ends of the rod bodies, the contact between the spheres and the rod bodies is ensured to be complete, the condition that the spheres float in the conical concave parts of the rod bodies due to the adhesive is eliminated, namely the separation between the spheres and the rod bodies due to the adhesive is eliminated, the influence of the change of the adhesive on the measurement accuracy of a measuring machine is reduced, and the measurement accuracy is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a perspective view of an air bearing support rod bonding tool in an embodiment of the utility model;

FIG. 2 is a front view of FIG. 1;

fig. 3 is an enlarged view of a portion a of fig. 2;

FIG. 4 is a schematic cross-sectional view of FIG. 3;

FIG. 5 is a schematic diagram showing the structure of two air bearing support rod bonding tools stacked up and down in an embodiment of the present utility model;

FIG. 6 is a schematic cross-sectional view of the elastic pressing member and the support bar on the base plate according to another embodiment of the present utility model.

Reference numerals: 100-a bottom plate; 110-a horizontal support surface; 120-accommodating grooves; 130-a threaded connection hole; 200-supporting rods; 210-sphere; 220-rod body; 221-a conical recess; 300-an elastic pressing member; 310-elastic arms; 311-free end; 312-fixed end; 320-a guide; 400-guide posts; 410-column part; 420-root; 421-mounting holes; 430-stud; 500-handle; 600-limit rod; 700-support member.

Detailed Description

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Referring to fig. 1 to 4, an air bearing support bar 200 bonding tool of the present embodiment includes a base plate 100, a support bar 200 and an elastic pressing member 300.

The bottom plate 100 has a horizontal supporting surface 110, in this embodiment, the bottom plate 100 is exemplified by a rectangular plate, the horizontal supporting surface 110 is a top surface thereof, a receiving groove 120 is formed on the horizontal supporting surface 110, the receiving groove 120 is opened upwards, and an axis thereof is perpendicular to the horizontal supporting surface 110, namely, a vertical groove.

The support bar 200 is used to connect with an air bearing to mount the air bearing on a device, such as a three-coordinate measuring machine. The support bar 200 comprises a bar body 220 and a ball body 210, wherein the bar body 220 is vertically inserted into the accommodating groove 120, a conical concave part 221 is formed at the top end of the bar body 220, the ball body 210 is arranged in the conical concave part 221, and the bottom of the ball body 210 is adhered to the conical concave part 221; the sphere 210 adopts a standard steel ball, and the precision is easy to ensure.

The elastic pressing component 300 is located at one side of the supporting rod 200, that is, at one side of the accommodating groove 120, the elastic pressing component 300 comprises an elastic arm 310, the elastic arm 310 is in a cantilever structure and can generate elastic deformation, and the elastic pressing component 300 can move to a first position and a second position; in the first position, the elastic arm 310 is elastically deformed, with its free end 311 resting against the dome of the sphere 210 to exert pressure on the sphere 210; in the second position, the resilient arms 310 resume their shape and disengage from the balls 210.

When the split type supporting rod 200 of the air bearing is bonded by adopting the bonding tool of the air bearing supporting rod 200 of the embodiment, the elastic pressing component 300 can be moved to the first position to enable the elastic arm 310 of the split type supporting rod to elastically deform, the free end 311 of the split type supporting rod abuts against the top of the spherical body 210 of the supporting rod 200 to apply pressure to the spherical body 210, under the continuous pressure action of the elastic arm 310, the bottom of the spherical body 210 of the supporting rod 200 is tightly attached to the conical concave part 221 at the top end of the rod 220, so that the adhesive is pressure-maintaining and solidifying, the hard contact between the spherical body 210 and the rod 220 is ensured, the condition that the spherical body 210 is floated in the conical concave part 221 of the rod 220 due to the adhesive is eliminated, namely the isolation between the spherical body 210 and the rod 220 due to the adhesive is eliminated, the influence of the change of the adhesive on the measuring accuracy of a measuring machine is reduced, and the measuring accuracy is improved.

Further, the resilient arm 310 may be rotationally movable to the first and second positions, or otherwise movable to the first and second positions.

In this embodiment, the base plate 100 is fixedly provided with a guide post 400, the guide post 400 is perpendicular to the horizontal supporting surface 110 and extends upwards, the elastic pressing component 300 further includes a cylindrical guide portion 320, the guide portion 320 is slidably matched with the guide post 400, the elastic arm 310 is in a strip shape, and has two ends, one end is a fixed end 312, the other end is a free end 311, and the fixed end 312 is fixedly connected to the guide portion 320. The elastic pressing member 300 is slidably engaged with the guide post 400 by the guide portion 320 thereof, so as to be movable up and down along the axial direction of the guide post 400, thereby moving to the first position or the second position.

The sliding fit clearance between the guide portion 320 and the guide post 400 is not too large, so that when the elastic pressing member 300 is in the first position, the elastic arm 310 is elastically deformed, and under the action of the acting force and the reaction force, the ball 210 applies upward force to the free end 311 of the elastic arm 310, so that the fixed end 312 of the elastic arm 310 drives the guide portion 320 to be held on the guide post 400 by being "held" so as to keep the position, and therefore, the elastic arm 310 can continuously press the ball 210, so that the ball 210 and the rod 220 are reliably bonded, and the floating of the adhesive is avoided as much as possible. When the elastic pressing member 300 needs to be moved to the second position, the free end 311 of the elastic arm 310 is manually lifted to be further elastically deformed to be separated from the sphere 210 of the support bar 200, and then released.

To further facilitate the position switching of the elastic pressing member 300 between the first position and the second position, in this embodiment, the guide post 400 is a cylindrical column, the guide portion 320 is correspondingly cylindrical, and the guide portion 320 can rotate relative to the guide post 400. The guide part 320 can slide axially relative to the guide post 400 and rotate relative to the guide post 400, so that the elastic pressing component 300 can move from the first position to the second position or from the second position to the first position more conveniently, and the tool is convenient to use.

In order to facilitate the elastic deformation of the elastic arm 310, in this embodiment, the fixed end 312 of the elastic arm 310 is fixedly connected to the top of the guiding portion 320, and the height of the elastic arm 310 from the fixed end 312 to the free end 311 thereof is gradually reduced, so as to facilitate the elastic deformation of the elastic arm 310.

In this embodiment, the elastic pressing member 300 is an integrally formed structure, and the fixing end 312 of the elastic arm 310 and the guiding portion 320 are in arc transition, so as to improve the overall structural strength.

The elastic arm 310 is specifically a spring piece, i.e., a spring steel piece, and has good elastic deformation capability and structural strength, and can bear a certain load without permanent deformation after the load is removed.

For the installation of the guide post 400 on the bottom plate 100, in this embodiment, the bottom end of the guide post 400 has an external thread, the bottom plate 100 is formed with a threaded connection hole 130, and the bottom end of the guide post 400 is in threaded fastening connection with the threaded connection hole 130, so as to implement the installation of the guide post 400 on the bottom plate 100.

The number of the accommodating grooves 120 is preferably a plurality, and accordingly, the supporting rods 200 are arranged in one-to-one correspondence with the accommodating grooves 120, the elastic pressurizing members 300 are arranged in one-to-one correspondence with the accommodating grooves 120, and the guide columns 400 are arranged in one-to-one correspondence with the elastic pressurizing members 300, so that the bonding work of the plurality of supporting rods 200 can be realized at the same time, and the working efficiency and the utilization rate of the bonding tool of the embodiment are improved. The plurality of accommodating grooves 120 are arranged in a matrix for processing, and correspondingly, the elastic pressing member 300 and the guide post 400 are correspondingly arranged in a matrix and are positioned at one side of the accommodating groove 120.

Handles 500 are disposed on both sides of the base plate 100 to facilitate flexible handling of the entire tool. The bottom plate 100 may further be provided with a plurality of limit rods 600, for the rectangular bottom plate 100, the limit rods 600 are four in number and are respectively arranged at four corners of the bottom plate 100 and also located on the horizontal supporting surface 110, the top end positions of the limit rods 600 are higher than the top end positions of the supporting rods 200 and also higher than the top end positions of the elastic pressurizing members 300, namely, for each member on the bottom plate 100, the height of the limit rods 600 is highest, and when a plurality of tools are provided, the tools can be placed in a vertically stacked manner. As shown in fig. 5, the two tools are stacked up and down to form a schematic structure, the bottom plate 100 of the upper tool is supported on the limit rod 600 of the lower tool, so that the influence on other structural components on the bottom plate 100 is avoided, the bonding work of the support rod 200 can be normally performed, the bonding efficiency is further improved, and the space occupation is reduced.

Further, as shown in fig. 3 and 4, the accommodating groove 120 is internally provided with a cylindrical supporting member 700, the top end of the supporting member 700 is located above the horizontal supporting surface 110, that is, the supporting member 700 protrudes upward from the horizontal supporting surface 110 and the accommodating groove 120, the height of the supporting member 700 is greater than the depth of the accommodating groove 120, and the rod 220 is vertically inserted into the supporting member 700. The provision of the support member 700 corresponds to an increase in the depth of the receiving groove 120, and is applicable to the bonding of the support bar 200 having a larger height or a smaller diameter of the bar body 220. When the rod 220 of the support rod 200 has a larger height or a smaller diameter, so that the stability of the support rod in the accommodating groove 120 is poor, the cylindrical support member 700 can be placed in the accommodating groove 120, and the rod 220 of the support rod 200 is vertically inserted into the support member 700 for auxiliary support, so that the placement stability of the support rod 200 and the universality of the tool in the embodiment are further improved.

As another embodiment of the mounting of the guide post 400 on the base plate 100, referring to fig. 6, the guide post 400 includes a post portion 410 and a root portion 420, the root portion 420 having a larger cross-sectional diameter than the post portion 410, i.e., the root portion 420 is thicker, a mounting hole 421 is formed on the top surface of the root portion 420, and the bottom end of the post portion 410 is interference fit with the mounting hole 421. The bottom end of the root 420 is formed with a stud 430, the bottom plate 100 is formed with a threaded connection hole 130, and the stud 430 is in threaded fastening connection with the threaded connection hole 130, thereby realizing the installation of the guide post 400 on the bottom plate 100. The guide post 400 with the structural form has strong root 420 stability and is beneficial to improving the overall structural strength.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. An air supporting bearing bracing piece bonding frock, its characterized in that includes:

the bottom plate is provided with a horizontal supporting surface, a containing groove is formed on the horizontal supporting surface, and the axis of the containing groove is perpendicular to the horizontal supporting surface;

the support rod comprises a rod body and a ball body, the rod body is vertically inserted into the accommodating groove, a conical concave part is formed at the top end of the rod body, the ball body is arranged in the conical concave part, and the bottom of the ball body is adhered to the conical concave part;

an elastic pressing member including an elastic arm, the elastic pressing member being movable to a first position and a second position; in a first position, the resilient arms are elastically deformed with their free ends resting against the spherical top of the sphere to exert pressure on the sphere; in the second position, the elastic arm resumes its shape and disengages from the sphere.

2. The bonding tool for the air bearing support rod according to claim 1, wherein,

the resilient arm is pivotally movable to the first position and the second position.

3. The bonding tool for the air bearing support rod according to claim 1, wherein,

the elastic pressing component further comprises a cylindrical guide part which is in sliding fit with the guide post, and the fixed end of the elastic arm is fixedly connected to the guide part.

4. The bonding tool for the air bearing support rod according to claim 3, wherein,

the guide post is a cylindrical column, the guide part is cylindrical correspondingly, and the guide part can rotate relative to the guide post.

5. The bonding tool for the air bearing support rod according to claim 3 or 4, wherein,

the fixed end of the elastic arm is fixedly connected to the top of the guide part, and the height of the elastic arm from the fixed end to the free end of the elastic arm is gradually reduced.

6. The bonding tool for the air bearing support rod according to claim 3, wherein,

the elastic pressurizing component is of an integrated structure, and the fixed end of the elastic arm and the guide part are in arc transition.

7. The bonding tool for the air bearing support rod according to claim 1, wherein,

the elastic arm is a spring piece.

8. The bonding tool for the air bearing support rod according to claim 1, wherein,

the accommodating groove is internally provided with a cylindrical supporting component, the top end of the supporting component is positioned above the horizontal supporting surface, and the rod body is vertically inserted into the supporting component.

9. The bonding tool for the air bearing support rod according to claim 3, wherein,

the guide post comprises a post part and a root part, wherein the cross section diameter of the root part is larger than that of the post part, a mounting hole is formed in the top surface of the root part, the bottom end of the post part is in interference fit with the mounting hole, a stud is formed in the bottom end of the root part, a threaded connection hole is formed in the bottom plate, and the stud is in threaded fastening connection with the threaded connection hole.

10. The bonding tool for the air bearing support rod according to claim 1, wherein,

the number of the accommodating grooves is multiple, the supporting rods are arranged in one-to-one correspondence with the accommodating grooves, and the elastic pressurizing parts are arranged in one-to-one correspondence with the accommodating grooves;

the bottom plate is provided with a handle, and/or the bottom plate is provided with a plurality of limiting rods, the limiting rods are arranged at the corners of the bottom plate, and the top end positions of the limiting rods are higher than the top end positions of the supporting rods and the top end positions of the elastic pressurizing parts.