CN216746037U - Assembly gap detection equipment - Google Patents

Abstract

The application provides an assembly gap check out test set relates to check out test set technical field. The assembly gap detection equipment is used for detecting the assembly gap when a steel ball is installed between a shaft lever and a shaft tube in the middle shaft, and comprises a rack, a first driving module, a gap detection module and two clamping modules, wherein the first driving module, the gap detection module and the two clamping modules are arranged on the rack; the two clamping modules are oppositely arranged along the vertical direction to clamp two ends of the middle shaft; first drive module can export and predetermine the moment of torsion and rotate with two clamping module relatively, and clearance detection module and jackshaft connection. Among the assembly clearance check out test set that this application provided, the driving shaft pole through a drive module and the relative rotation of central siphon. And then the assembly clearance is indirectly obtained through the clearance detection module. The method provides reference for the selection and matching of the steel balls, improves the adaptability, and further improves the coaxiality of the shaft tube and the shaft rod after the intermediate shaft is assembled and the transmission stability.

Description

Assembly gap detection equipment

Technical Field

The application relates to the technical field of detection equipment, in particular to assembling clearance detection equipment.

Background

In the intermediate shaft of the existing automobile steering system, a steel ball guide rail piece and a spring piece are adopted between a shaft tube and a shaft rod for preassembling, and then the steel ball is assembled in a centralized manner.

Because the inner diameter and the outer diameter of the shaft tube and the shaft rod after being processed have certain errors, although the errors float within the allowable tolerance range, when the shaft tubes with different specifications are matched with the shaft rod, the gaps of the assembling steel balls formed between the shaft tubes and the shaft rod are different. Therefore, if the gap formed between the loaded steel ball and the shaft tube and the shaft rod is not matched, the coaxiality of the shaft tube and the shaft rod and the stability of transmission are directly influenced.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide an assembly gap check out test set for solve exist among the prior art not enough.

In order to achieve the purpose, the application provides an assembly gap detection device which is used for detecting an assembly gap when a steel ball is installed between a shaft lever and a shaft tube in an intermediate shaft, and the assembly gap detection device comprises a rack, and a first driving module, a gap detection module and two clamping modules which are arranged on the rack;

the two clamping modules are oppositely arranged along the vertical direction, wherein the two clamping modules are respectively used for clamping the shaft lever and the shaft tube, and a standard steel ball for detection is arranged between the shaft lever and the shaft tube;

the output end of the first driving module is connected with one of the clamping modules, and the first driving module can output a preset torque to drive the two clamping modules to rotate relatively;

the clearance detection module is used for being connected with the intermediate shaft, and the clearance detection module can indirectly obtain the assembly clearance of the steel ball by detecting the displacement of relative rotation between the shaft lever and the shaft tube.

In a possible implementation manner, the gap detection module comprises a detection seat, a first floating clamping mechanism and a displacement detection mechanism;

the detection seat is arranged on the frame;

the first floating clamping mechanism comprises a first floating seat, a first positioning clamp assembly and a first clamping assembly, the first floating seat is movably arranged on the detection seat, the first clamping assembly is arranged on the first floating seat, the first clamping assembly can clamp one end of the first driving module of the shaft lever and rotate along with the shaft lever, the first positioning clamp assembly is arranged on the detection seat, and the first positioning clamp assembly can selectively clamp the first floating seat so as to limit the movement of the first floating seat;

the displacement detection mechanism is arranged on the rack and corresponds to one end, far away from the intermediate shaft, of the first floating seat, and is used for detecting the rotating displacement of the first floating seat.

In one possible embodiment, the displacement detection mechanism comprises a detection block and two displacement sensors;

the two displacement sensors are arranged on the rack and are arranged oppositely;

the detection block is arranged at one end, far away from the intermediate shaft, of the first floating seat and between the two displacement sensors, and two opposite side faces of the detection block are respectively abutted to detection ends of the corresponding displacement sensors.

In a possible implementation manner, the gap detection module further includes a second floating clamping mechanism, where the second floating clamping mechanism includes a second floating seat, a second clamping assembly, and at least one second positioning clamp assembly;

the second floating seat is movably arranged on the rack, wherein the displacement detection mechanism is arranged on the second floating seat;

the second clamping assembly is arranged on the second floating seat and located below the first clamping assembly and used for clamping the shaft tube, the at least one second positioning clamp assembly is arranged on the detection seat and can selectively clamp the second floating seat so as to limit the movement of the second floating seat.

In a possible embodiment, the gap detection module further includes a lifting mechanism, and the lifting mechanism includes a lifting driving assembly and a lifting platform;

the lifting driving assembly is arranged on the rack;

the lifting platform is arranged at the output end of the lifting driving component, and the lifting driving component is used for driving the lifting platform to lift along the vertical direction;

the detection seat, the first floating clamping mechanism and the displacement detection mechanism are all arranged on the lifting platform.

In a possible embodiment, both ends of the intermediate shaft are provided with swing joint forks, and at least one clamping module is in clamping fit with the swing joint forks.

In a possible implementation manner, the two clamping modules are respectively a first clamping module and a second clamping module;

the first clamping module is fixedly arranged on the rack;

the second clamping module is movably mounted on the rack and located above the first clamping module, and the second clamping module is connected with the output end of the first driving module.

In a possible implementation manner, the first clamping module comprises a clamping seat, a positioning seat and two first clamping mechanisms which are arranged oppositely;

the positioning seat is arranged between the clamping seat and the two first clamping mechanisms and is used for positioning and supporting the intermediate shaft;

the first clamping mechanism comprises a clamping cylinder and a first clamping block assembly, the clamping cylinder is arranged on the clamping seat, the first clamping block assembly is arranged at the output end of the clamping cylinder, and the clamping cylinder is used for driving the first clamping block assembly to move towards the direction close to or far away from the positioning seat.

In a possible implementation manner, the second clamping module comprises a bearing seat, a transmission shaft and a second clamping mechanism;

the bearing seat is arranged on the frame;

the transmission shaft penetrates through the bearing seat, and one end of the transmission shaft is connected with the output end of the first driving module;

the second clamping mechanism is arranged at the other end of the transmission shaft and is used for clamping the intermediate shaft.

In a possible implementation mode, a support frame, a second driving module and a mounting sliding plate are arranged on the rack;

the support frame is vertically arranged on the rack;

the mounting sliding plate is slidably arranged on the rack, and the first driving module and the clamping module connected with the output end of the first driving module are arranged on the mounting sliding plate;

the second driving module is arranged on the supporting frame, and the output end of the second driving module is connected with the installation sliding plate and used for driving the installation sliding plate to move along the vertical direction.

Compare in prior art, the beneficial effect of this application:

the application provides an assembly clearance check out test set, when examining, installs the standard steel ball that detects usefulness between axostylus axostyle and the central siphon, again with the axostylus axostyle and the central siphon clamping back on the clamping module that corresponds, under the drive of first drive module, relative rotation can take place for axostylus axostyle and central siphon in the jackshaft. From this, the relative central siphon corotation of this application accessible first drive module with the same moment of torsion drive axostylus axostyle is once with the reversal, and then turns into the displacement volume that detects through the rotation volume that the clearance detection module produced when revolving shaft pole and central siphon relatively, from this, can indirectly acquire the fitting gap of steel ball in the jackshaft through this displacement volume. And then provide the reference for the selective matching of follow-up steel ball, ensure the assembly clearance match in steel ball and the jackshaft of assembly, further improved the axiality and the driven stability of jackshaft assembly back shaft pipe and axostylus axostyle.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 illustrates a principal view of an intermediate shaft provided by the present application;

FIG. 2 shows a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a perspective view of an assembly gap detecting apparatus according to an embodiment of the present disclosure, showing a perspective view of a shaft;

fig. 4 is a perspective view showing another view of the assembly gap detecting apparatus shown in fig. 3;

FIG. 5 is a partial enlarged schematic view of FIG. 3 at B;

FIG. 6 is a partial enlarged schematic view of FIG. 3 at C;

FIG. 7 is a schematic view of a portion of the enlarged structure shown at D in FIG. 4;

FIG. 8 is a partial schematic structural view of a gap detecting module in the assembly gap detecting apparatus shown in FIG. 3;

FIG. 9 is an exploded view of the first floating fixture of the gap sensing module of FIG. 8;

FIG. 10 is an exploded view of the second floating fixture of the gap sensing module of FIG. 8;

FIG. 11 illustrates a front view of the gap sensing module of FIG. 8;

fig. 12 shows a cross-sectional view along the direction E-E in fig. 11.

Description of the main element symbols:

1-an intermediate shaft; 10-shaft tube; 100-a frame; 11-an axle rod; 12-a spider assembly; 12 a-a fixed yoke; 12 b-a swing yoke; 13-a cage; 14-steel balls; 15-assembly clearance; 200-a support frame; 300-a first driving module; 310-a first drive motor; 320-a motor base; 330-an output shaft; 400-clamping the module; 410-a first clamping module; 411-clamping seat; 412-positioning seat; 413-a first clamping mechanism; 4130-installing a vertical seat; 4131-a first clamping cylinder; 4132-a first clamp block assembly; 4132 a-clamp block body; 4132 b-chuck; 420-a second clamping module; 421-a bearing seat; 422-a transmission shaft; 423-a second clamping mechanism; 4230-a second clamping cylinder; 4231-a second clamp block assembly; 500-torque sensor; 600-gap detection module; 610-gap detection means; 611-detection seat; 6111-lower seat body; 6112-upper seat body; 612-a first floating clamping mechanism; 6120-first floating seat; 6121-first clamping assembly; 6122-yoke support assembly; 6122 a-jacking cylinder; 6122 b-yoke support clip; 6123-weight block; 6124-first positioning clamp assembly; 6125-first universal ball bearing; 6126-a first wear pad; 6127-a first limit shaft; 6128-first limit hole; 613-a second floating clamping mechanism; 6130-second floating seat; 6131-a second clamping assembly; 6132-a second alignment clip assembly; 6133-a second universal ball bearing; 6134-a second wear pad; 6135-a second limit shaft; 6136-second limit hole; 614-displacement detection mechanism; 6140-Jiong shape frame; 6141-displacement sensor; 6142-detection block; 6143-adjusting screw; 615-a material detector; 6150-stent; 620-a lifting mechanism; 700-a second driving module; 710-a second drive motor; 720-screw drive mechanism; 730-a belt drive; 800-installing the sliding plate.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, 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," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

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 application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example one

Referring to fig. 1, 2 and 3, the present embodiment provides an assembly gap detection apparatus for detecting an assembly gap 15 of a steel ball 14 in an intermediate shaft 1.

The intermediate shaft 1 is used in a motor vehicle steering system for transmitting torque and for adjusting the axial distance. Jackshaft 1 includes axostylus axostyle 11, central siphon 10 and holder 13, axostylus axostyle 11 is inserted and is located in central siphon 10, holder 13 sets up between central siphon 10 and axostylus axostyle 11, and install multirow steel ball 14 on the holder 13, be formed with the ball groove of these some steel balls 14 of assembly after central siphon 10 and the 11 cooperation of axostylus axostyle, 14 grooves in the steel ball set up along jackshaft 1's axial extension, therefore, steel ball 14 installs back in the ball groove, can the relative rotation between 11 and the central siphon 10 of axostylus axostyle, but can not restrict the axial displacement of the 11 relative central siphon 10 of axostylus axostyle. Further, a cross yoke assembly 12 is installed at both ends of the intermediate shaft 1, that is, at one end of the shaft tube 10 and the shaft rod 11 away from each other, and the cross yoke assembly 12 includes a fixed yoke 12a and a swing yoke 12b hinged to each other in a cross shape, wherein the fixed yoke 12a is connected to the intermediate shaft 1 through a spline, and the swing yoke 12b is movable relative to the fixed yoke 12a so as to facilitate installation of the intermediate shaft 1 and transmission of power.

Since the shaft 11 and the shaft tube 10 are allowed to have a certain machining error during the machining process, the ball-groove fitting gap 15 formed after different shaft 11 and shaft tube 10 are fitted is different due to the error between the shaft 11 and the shaft tube 10. Therefore, in order to improve the coaxiality of the matching of the shaft lever 11 and the shaft tube 10 and the stability of transmission, the embodiment provides the assembly gap detection device, which detects the size of the assembly gap 15 of the ball groove of the steel ball 14 after the matching of the shaft lever 11 and the shaft tube 10, and further selects and matches the proper steel ball 14 for the corresponding shaft lever 11 and the shaft tube 10.

First, before the assembly gap 15 of the intermediate shaft 1 is detected, the standard steel ball 14 is assembled in the retainer 13 according to the present embodiment, wherein the standard steel ball 14 is designed according to the minimum assembly gap 15 after the shaft rod 11 is assembled with the shaft tube 10. Therefore, the assembling clearance 15 formed after the different shaft levers 11 are matched with the shaft tube 10 is larger than or equal to the spherical diameter of the standard steel ball 14, and further, a certain circumferential rotating clearance exists between the assembled shaft levers 11 and the assembled shaft tube 10. The fitting clearance detecting apparatus provided in the present embodiment can obtain the fitting clearance 15 of the steel ball 14 by detecting the rotation clearance therebetween.

Referring to fig. 1, 3 and 4, the assembly gap detecting apparatus of the present embodiment includes a frame 100, a supporting frame 200, a first driving module 300, a gap detecting module 600 and two clamping modules 400. Wherein, the frame 100 is arranged on the ground, and the supporting frame 200 is vertically installed on the frame 100. Two clamping modules 400 are respectively arranged on the frame 100 and the support frame 200, and the two clamping modules 400 are arranged oppositely along the vertical direction, wherein the two clamping modules 400 are respectively used for clamping two opposite ends of the intermediate shaft 1.

For more clearly describing the technical solution of the present application, in the present embodiment, two clamping modules 400 are defined as a first clamping module 410 and a second clamping module 420, respectively, wherein the first clamping module 410 is fixedly installed on the rack 100, and the second clamping module 420 is movably installed on the supporting frame 200 and located above the first clamping module 410.

Further, the first clamping module 410 is used for clamping the swing yoke 12b at the end of the shaft tube 10 of the intermediate shaft 1, and the second clamping module 420 is used for clamping the swing yoke 12b at the end of the shaft rod 11 of the intermediate shaft 1. The first driving module 300 is disposed on the supporting frame 200, an output end of the first driving module 300 is connected to the second clamping module 420, and the first driving module 300 can output a predetermined torque to drive the two clamping modules 400 to rotate relatively. In the embodiment, the size range of the preset torque is selected and designed to be 1N · M to 3N · M, and the standard steel ball 14 can be prevented from damaging the structures of the shaft lever 11 and the shaft tube 10 within the torque range, and meanwhile, the detection accuracy is ensured.

Referring to fig. 6, in order to ensure that the torque output by the first driving module 300 is a stable torque, in the embodiment, a torque sensor 500 is further disposed between the output end of the first driving module 300 and the second clamping module 420, and the torque sensor 500 is used for detecting the magnitude of the torque output by the output end of the first driving module 300.

The clearance detects module 600 and sets up on frame 100, and the clearance detects module 600 and is connected with the axostylus axostyle 11 and the central siphon 10 of jackshaft 1 respectively, and the clearance detects module 600 through detecting the relative pivoted displacement volume between axostylus axostyle 11 and the central siphon 10, can indirectly acquire the fit-up gap 15 of steel ball 14.

Referring to fig. 1, fig. 3 and fig. 5, in particular, the first clamping module 410 includes a clamping seat 411, a positioning seat 412 and two first clamping mechanisms 413 disposed opposite to each other. The two first clamping mechanisms 413 are disposed on the rack 100 through the clamping seat 411, the positioning seat 412 is disposed on the clamping seat 411, and the positioning seat 412 is located between the two first clamping mechanisms 413. The end of the positioning socket 412 is fitted for the wobble yoke 12b of the shaft tube 10 of the intermediate shaft 1 to support and position the intermediate shaft 1. The two first clamping mechanisms 413 cooperate with each other to clamp the positioned intermediate shaft 1, and in this embodiment, the two first clamping mechanisms 413 clamp the swing yoke 12b at the end of the shaft tube 10.

The first clamping mechanism 413 comprises an installation upright seat 4130, a first clamping cylinder 4131 and a first clamping block assembly 4132, wherein the first clamping cylinder 4131 and the first clamping block assembly 4132 are both installed on the installation upright seat 411 through the installation upright seat 4130, and the first clamping cylinder 4131 is fixedly installed on the installation upright seat 4130. The first clamping block assembly 4132 includes a clamping block body 4132a and a clamping head 4132b, the clamping block body 4132a is slidably disposed on the mounting seat 4130, the clamping block body 4132a is connected to the output end of the first clamping cylinder 4131, and the clamping head 4132b is detachably disposed at an end of the clamping block body 4132a away from the first clamping cylinder 4131. The first clamping cylinder 4131 can drive the clamp block body 4132a to slide the clamp head 4132b, so that the clamp head 4132b moves towards or away from the positioning seat 412, and the clamp head 4132b can be in surface fit with the swing yoke 12 b.

It will be appreciated that the collet 4132b is a removable component whereby different sizes of intermediate shafts 1 can be fitted by replacing different sizes of collet 4132 b; in addition, when the clamp 4132b is damaged, only the clamp 4132b needs to be replaced, and cost is saved. The clamp 4132b is surface-fitted to the wobble yoke 12b, which improves the stability of the clamping and restricts the rotation of the wobble yoke 12b about the axis of the intermediate shaft 1.

As shown in fig. 5, the clamping head 4132b is further formed in an "L" shape, and when clamping the swing yoke 12b, a relief space formed at an upper portion of the clamping head 4132b may accommodate the fixed yoke 12a, thereby preventing interference in movement with the fixed yoke 12 a.

Referring to fig. 1, 3 and 6, the second clamping module 420 includes a bearing seat 421, a transmission shaft 422 and a second clamping mechanism 423. The bearing seat 421 is disposed on the supporting frame 200, the transmission shaft 422 penetrates through the bearing seat 421 and is matched with a bearing in the bearing seat 421, and one end of the transmission shaft 422 is connected with the output end of the first driving module 300. The second clamping mechanism 423 is disposed at the other end of the transmission shaft 422, the second clamping mechanism 423 is located at one end of the transmission shaft 422 close to the first clamping module 410, and the second clamping mechanism 423 is used for clamping the swing yoke 12b at the end of the shaft 11 of the intermediate shaft 1.

Further, the second clamping mechanism 423 includes a second clamping cylinder 4230 and a second clamping block assembly 4231, the second clamping cylinder 4230 is installed on the transmission shaft 422, the second clamping block assembly 4231 is connected with an output end of the second clamping cylinder 4230, the second clamping block assembly 4231 includes two clamping jaws which are arranged oppositely, the two clamping jaws are used for clamping the swing joint fork 12b at the end of the shaft rod 11, and the two clamping jaws and the swing joint fork 12b are in surface fit.

Referring to fig. 3 and 6, the first driving module 300 includes a first driving motor 310 and an output shaft 330, the first driving motor 310 is mounted on the supporting frame 200 through a motor base 320, a motor shaft of the first driving motor 310 is connected to the output shaft 330, and an end of the output shaft 330 far away from the first driving motor 310 is connected to the transmission shaft 422 through a torque sensor 500. Accordingly, the first driving motor 310 may sequentially transmit torque to the second clamping mechanism 423 through the output shaft 330 and the transmission shaft 422, and further drive the second clamping mechanism 423 to rotate.

Referring to fig. 1, 3, 4 and 8, the gap detecting module 600 includes a gap detecting device 610, and the gap detecting device 610 includes a detecting base 611, a first floating fixture 612, a second floating fixture 613 and a displacement detecting mechanism 614. The detecting base 611 includes a lower base 6111 and an upper base 6112 disposed on the lower base 6111, and the lower base 6111 is disposed on the rack 100. The first floating fixture 612 is floatingly disposed on the upper seat 6112, and the first floating fixture 612 is configured to clamp the shaft 11. The second floating clamping mechanism 613 is floatingly disposed on the lower seat 6111, and the second floating clamping mechanism 613 is used for clamping the shaft tube 10. The displacement detecting mechanism 614 is disposed between the first floating fixture 612 and the second floating fixture 613, and the displacement detecting mechanism 614 can detect the relative displacement between the first floating fixture 612 and the second floating fixture 613.

Referring to fig. 9, the first floating fixture 612 includes a first floating seat 6120, a first positioning clamp assembly 6124, and a first clamping assembly 6121. The first floating seat 6120 is movably disposed on the upper seat body 6112, in this embodiment, the first floating seat 6120 is disposed on the upper seat body 6112 through four first universal ball bearings 6125, the first universal ball bearings 6125 are embedded in the upper seat body 6112, and balls in the first universal ball bearings 6125 contact with a bottom surface of the first floating seat 6120, so that the first floating seat 6120 can float relative to the upper seat body 6112.

Optionally, the four first universal ball bearings 6125 are uniformly distributed on the surface of the upper seat body 6112, and are all located below the first floating seat 6120, so as to improve the stability of the support.

Further, in order to improve the wear resistance of the first floating seat 6120, a first wear-resistant cushion block 6126 is arranged at the bottom of the first floating seat 6120, and the first wear-resistant cushion block 6126 corresponds to the first universal ball bearing 6125, so that the service life of the first floating seat 6120 is prolonged.

In order to limit the floating range of the first floating seat 6120 and prevent the first floating seat 6120 from being separated from the upper seat body 6112, the upper seat body 6112 of the present embodiment is further provided with a first limiting shaft 6127, the first floating seat 6120 is correspondingly provided with a first limiting hole 6128 allowing the first limiting shaft 6127 to pass through, and the first limiting shaft 6127 and the first limiting hole 6128 are in clearance fit, so that the first floating seat 6120 floats on the upper seat body 6112. Further, the end of the first limit shaft 6127 is further provided with a limit boss, the diameter of the limit boss is larger than the first limit hole 6128, and the limit boss can limit the axial movement of the first floating seat 6120 along the first limit shaft 6127.

The first clamping assembly 6121 is disposed on the first floating seat 6120, the first clamping assembly 6121 is a pneumatic clamping jaw, and the first clamping assembly 6121 can clamp one end of the shaft 11 close to the first driving module 300. Because the first floating seat 6120 is floatingly disposed on the upper seat 6112, the shaft lever 11 can drive the first clamping assembly 6121 to rotate together when rotating.

The first positioning clamp assembly 6124 is disposed on the upper seat body 6112, and the first positioning clamp assembly 6124 is a pneumatic clamping jaw. Before the first clamping assembly 6121 clamps the shaft 11, the first positioning clamp assembly 6124 clamps the first floating seat 6120 to limit the movement of the first floating seat 6120, so that the first floating seat 6120 is located at an initial position, and when the first clamping assembly 6121 finishes clamping the shaft 11, the first positioning clamp assembly 6124 releases the clamping of the first floating seat 6120, so that the first floating seat 6120 is restored to a movable state, so that subsequent detection work can be performed.

Further, the first floating clamping mechanism 612 further includes a joint fork supporting assembly 6122 and a weight block 6123, wherein the joint fork supporting assembly 6122 is disposed on the first clamping assembly 6121, and the joint fork supporting assembly 6122 is used for abutting against a fixed joint fork 12a at the end of the shaft rod 11 to lift the shaft rod 11. The counterweight block 6123 is disposed at an end of the first floating seat 6120 far from the joint fork support assembly 6122, so that the first floating seat 6120 is prevented from tipping when the joint fork support assembly 6122 lifts the shaft lever 11, and the first floating seat 6120 is kept balanced.

Further, the yoke support assembly 6122 includes a jacking cylinder 6122a and a yoke support clamp 6122b, the jacking cylinder 6122a is disposed on the first clamping assembly 6121, the yoke support clamp 6122b is connected with a piston rod of the jacking cylinder 6122a, and the yoke support clamp 6122b is used for abutting against the fixed yoke 12a at the end of the shaft lever 11. It can be understood that the position of the shaft 11 relative to the shaft tube 10 can be adjusted by the jacking cylinder 6122a to adjust the position of the first clamping assembly 6121 for clamping the shaft 11, thereby facilitating the clamping of the intermediate shafts 1 with different specifications.

Referring to fig. 10, the second floating fixture 613 includes a second floating seat 6130, a second clamping assembly 6131 and at least one second positioning clamp assembly 6132. The second floating seat 6130 is movably disposed on the lower seat body 6111 and is located right below the first floating seat 6120. In this embodiment, the second floating seat 6130 is disposed on the lower seat body 6111 through four second universal ball bearings 6133, the second universal ball bearings 6133 are embedded in the lower seat body 6111, and the balls in the second universal ball bearings 6133 contact with the bottom surface of the second floating seat 6130, so that the second floating seat 6130 can float relative to the lower seat body 6111.

Optionally, the four second universal ball bearings 6133 are uniformly distributed on the surface of the lower seat 6111, and are all located below the second floating seat 6130, so as to improve the stability of the support.

Further, in order to improve the wear resistance of the second floating seat 6130, a second wear-resistant cushion block 6134 is arranged at the bottom of the second floating seat 6130, and the second wear-resistant cushion block 6134 corresponds to the second universal ball bearing 6133, so that the service life of the second floating seat 6130 is prolonged.

In order to limit the floating range of the second floating seat 6130 and prevent the second floating seat 6130 from being separated from the lower seat body 6111, in this embodiment, a second limiting shaft 6135 is further disposed on the lower seat body 6111, the second floating seat 6130 is correspondingly provided with a second limiting hole 6136 allowing the second limiting shaft 6135 to pass through, and the second limiting shaft 6135 and the second limiting hole 6136 are in clearance fit, so that the second floating seat 6130 floats on the lower seat body 6111. Further, the end of the second limit shaft 6135 is further provided with a limit boss, the diameter of the limit boss is larger than the second limit hole 6136, and the limit boss can limit the axial movement of the second floating seat 6130 along the second limit shaft 6135.

The second clamping assembly 6131 is disposed on the second floating seat 6130, the second clamping assembly 6131 is aligned with the first clamping assembly 6121, the second clamping assembly 6131 is a pneumatic clamping jaw, and the second clamping assembly 6131 can clamp the shaft tube 10. Because the second floating seat 6130 is floatingly disposed on the lower seat 6111, the shaft tube 10 slips when rotating, and the second clamping assembly 6131 can move adaptively along with the shaft tube 10, thereby preventing the shaft tube 10 and the second clamping assembly 6131 from moving relatively to each other, which causes a detection error.

The number of the second positioning clamp assemblies 6132 is two, three or other numbers, in this embodiment, the number of the second positioning clamp assemblies 6132 is two, the two second positioning clamp assemblies 6132 are disposed on the lower base 6111, the two second positioning clamp assemblies 6132 correspond to two adjacent sides of the second floating base 6130, respectively, wherein the second positioning clamp assemblies 6132 are pneumatic clamping jaws. Before the second clamping assembly 6131 clamps the shaft tube 10, the second positioning clamp assembly 6132 clamps the second floating seat 6130 to limit the movement of the second floating seat 6130, so that the second floating seat 6130 is located at an initial position; when the second clamping assembly 6131 finishes clamping the shaft tube 10, the second positioning clamp assembly 6132 releases the clamping of the second floating seat 6130, so that the second floating seat 6130 is restored to the active state for subsequent detection work.

Referring to fig. 8, 9, 10, 11 and 12, the displacement detecting mechanism 614 corresponds to an end of the first floating seat 6120 away from the intermediate shaft 1, and since the shaft lever 11 rotates relative to the shaft tube 10 under the driving of the first driving module 300 during the detection, and the shaft lever 11 drives the first floating seat 6120 to rotate together, the displacement of the first floating seat 6120 is detected by the displacement detecting mechanism 614 in this embodiment, so as to indirectly obtain the assembling gap 15 of the steel ball 14 in the intermediate shaft 1.

In the present embodiment, the displacement detecting mechanism 614 includes an Jiong-shaped frame 6140, a detecting block 6142 and two displacement sensors 6141. Wherein, the Jiong-shaped frame 6140 is mounted on the second floating seat 6130 in an inverted way, and the Jiong-shaped frame 6140 is provided with two opposite mounting parts. The two displacement sensors 6141 are mounted on the two mounting portions of the Jiong-shaped frame 6140, respectively, so that the two displacement sensors 6141 are also arranged oppositely. The detection block 6142 is installed at one end of the first floating seat 6120 far away from the intermediate shaft 1, the detection block 6142 passes through the upper seat body 6112 and extends towards the lower seat body 6111, the detection block 6142 is located between the two displacement sensors 6141, and two opposite side surfaces of the detection block 6142 are respectively abutted to the two displacement sensors 6141.

It can be understood that, when the shaft lever 11 rotates relative to the shaft tube 10 during detection, the first clamping assembly rotates along with the shaft lever 11 and drives the detecting block 6142 to rotate through the first floating seat 6120, the detecting block 6142 pushes the displacement sensor 6141 located in the rotation direction, and the displacement sensor 6141 can detect the first displacement of the detecting block 6142. When the shaft 11 rotates reversely relative to the shaft tube 10, the detecting block 6142 pushes against the other displacement sensor 6141, and the displacement sensor 6141 can detect the second displacement of the detecting block 6142. The size of the assembly gap 15 can be calculated through the first displacement and the second displacement which are detected and the sphere diameter of the standard steel ball 14, and then the reference can be made for the matching steel ball 14, so that the matching steel ball 14 is matched with the corresponding intermediate shaft 1, the coaxiality of the shaft lever 11 and the shaft tube 10 in the intermediate shaft 1 is improved, and the transmission stability is improved.

Because the fixture that floats of first unsteady fixture and second is the floating state, so when axostylus axostyle 11 and central siphon 10 appear skidding carrying out relative rotation in-process, the fixture that floats of first unsteady fixture and second can rotate thereupon in order to compensate, and then improves the accuracy that detects, avoids causing the damage to jackshaft 1 simultaneously.

In some embodiments, the displacement detecting mechanism 614 further includes two adjusting screws 6143, the two adjusting screws 6143 are respectively disposed on the two mounting portions of the Jiong-shaped frame 6140, and the two adjusting screws 6143 are in threaded fit with the Jiong-shaped frame 6140. Therefore, by screwing the adjusting screw 6143, the adjusting screw 6143 can push against the detecting block 6142 to adjust the initial position of the detecting block 6142, so that the initial displacement amounts of the detecting blocks 6142 detected by the two displacement sensors 6141 are the same, and the detection accuracy is improved. After the adjustment is completed, the adjustment screw 6143 is screwed in the reverse direction to release the abutment of the detection block 6142, and the detection is started again.

Referring to fig. 8, in some embodiments, the gap detecting module 600 further includes a material detector 615, the material detector 615 is mounted on the upper seat body 6112 through a bracket 6150, and a detecting end of the material detector 615 faces a direction of the clamping intermediate shaft 1, and is configured to detect whether the intermediate shaft 1 is clamped. Alternatively, the material detector 615 may be selected to be a proximity switch or an infrared sensor.

Referring to fig. 4 and 8, in some embodiments, the gap detection module 600 further includes a lifting mechanism 620, the lifting mechanism 620 includes a lifting driving assembly and a lifting platform, and the gap detection device 610 is integrally disposed on the lifting platform. In this embodiment, the lifting platform is directly replaced by the lower seat 6111, which saves material. The lifting driving assembly is disposed on the rack 100, an output end of the lifting driving assembly is connected to the lower base 6111, and the lifting driving assembly is configured to drive the lower base 6111 to drive the first floating clamping mechanism, the second floating clamping mechanism and the displacement detecting mechanism 614 to ascend and descend along a vertical direction, so as to adjust positions of the first floating clamping mechanism and the second floating clamping mechanism in the vertical direction to adapt to the intermediate shafts 1 with different specifications.

In some embodiments, the lift drive assembly is one of a lift cylinder, an electric push rod or servo motor, and a lead screw drive assembly.

Referring to fig. 1 to 12, the present embodiment also provides a detection method using the above assembly gap detection apparatus, where the detection method includes the following steps:

s100: and (3) placing the retainer 13 with the standard steel ball 14 between the shaft lever 11 to be detected and the shaft tube 10 to obtain the intermediate shaft 1 to be detected.

S200: the intermediate shaft 1 to be detected is clamped through the first clamping module 410 and the second clamping module 420.

In some embodiments, the first clamping module 410 can be directly clamped on the shaft tube 10 or the second clamping module 420 can be directly clamped on the shaft rod 11.

In this embodiment, the first clamping module 410 clamps the swing yoke 12b at the end of the axle tube 10, and the second clamping module 420 clamps the swing yoke 12b at the end of the axle rod 11. Because the swing yoke 12b can be moved relative to the fixed yoke 12a, the intermediate shaft 1 to be detected after clamping is in an active state, and therefore, even if the axis of the intermediate shaft 1 to be detected is not coincident with the rotating center line of the second clamping module 420, the shaft rod 11 can be driven to rotate relative to the shaft tube 10, the clamping is more stable, slipping is avoided, meanwhile, the intermediate shaft 1 to be detected cannot be damaged, and the accuracy of a detection result is ensured.

S300: and then the gap detection module 600 and the shaft lever 11 of the intermediate shaft 1 to be detected are connected with the shaft tube 10.

S400: and starting detection. Specifically, the first driving module 300 drives the second clamping module 420 to drive the shaft 11 to rotate forward (e.g., clockwise) with a predetermined torque, and then drives the second clamping module 420 to drive the shaft 11 to rotate backward (e.g., counterclockwise) with the same torque. The clearance detection module 600 detects the forward and reverse displacement of the shaft lever 11, and sums the forward and reverse displacement to obtain the size of the assembly clearance 15, so that the steel ball 14 can be selected and assembled according to the detected size of the assembly clearance 15.

S500: and (5) finishing the detection, replacing the next intermediate shaft 1 to be detected, and repeating the steps S200 and S400.

Example two

Referring to fig. 1, 3, 4, 6 and 7, the present embodiment provides an assembly gap detection apparatus for detecting an assembly gap 15 of a steel ball 14 in an intermediate shaft 1. The present embodiment is an improvement on the technology of the first embodiment, and compared with the first embodiment, the difference is that:

in this embodiment, the assembly gap detecting apparatus further includes a second driving module 700 and a mounting slide 800. The second driving module 700 and the installation sliding plate 800 are both disposed on the supporting frame 200, wherein the installation sliding plate 800 is in sliding fit with the supporting frame 200 through a sliding rail, the sliding rail is arranged on the supporting frame 200 along the vertical direction, and the first driving module 300 and the second clamping module 420 are both installed on the installation sliding plate 800. The output end of the second driving module 700 is connected with the mounting sliding plate 800, and is used for driving the mounting sliding plate 800 to move along the vertical direction, so as to drive the first driving module 300 and the second clamping module 420 to move along the vertical direction, so that the distance between the second clamping module 420 and the first clamping module 410 is realized, and the second driving module 700 is used for adapting to the intermediate shafts 1 with different lengths and specifications.

Specifically, the second driving module 700 includes a second driving motor 710 and a screw transmission mechanism 720, wherein the screw transmission mechanism 720 includes a screw and a transmission nut matched with a screw thread pair of the screw, the screw is rotatably disposed on the supporting frame 200 along a vertical direction, the transmission nut is sleeved on the screw, and the transmission nut is connected with the mounting sliding plate 800. The second driving motor 710 is installed on the supporting frame 200, and an output end of the second driving motor 710 is connected with the screw rod through a belt transmission mechanism 730 to drive the screw rod to rotate. Therefore, the second driving motor 710 can output forward and reverse rotation motion to drive the mounting slide plate 800 to move back and forth along the vertical direction.

In some embodiments, the output of the second drive motor 710 may be coupled to the lead screw via a gear drive, a sprocket drive, or a coupling.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. The assembling clearance detection equipment is used for detecting the assembling clearance between a shaft lever and a shaft tube in an intermediate shaft during installation of a steel ball, and is characterized by comprising a rack, a first driving module, a clearance detection module and two clamping modules, wherein the first driving module, the clearance detection module and the two clamping modules are arranged on the rack;

the two clamping modules are oppositely arranged along the vertical direction, wherein the two clamping modules are respectively used for clamping the shaft lever and the shaft tube, and a standard steel ball for detection is arranged between the shaft lever and the shaft tube;

the output end of the first driving module is connected with one of the clamping modules, and the first driving module can output a preset torque to drive the two clamping modules to rotate relatively;

the clearance detection module is used for being connected with the shaft lever and the shaft tube, and the clearance detection module can indirectly acquire the assembly clearance of the steel ball by detecting the displacement of relative rotation between the shaft lever and the shaft tube.

2. The assembly gap detection device according to claim 1, wherein the gap detection module comprises a detection seat, a first floating clamping mechanism and a displacement detection mechanism;

the detection seat is arranged on the frame;

the first floating clamping mechanism comprises a first floating seat, a first positioning clamp assembly and a first clamping assembly, the first floating seat is movably arranged on the detection seat, the first clamping assembly is arranged on the first floating seat, the first clamping assembly can clamp one end of the first driving module of the shaft lever and rotate along with the shaft lever, the first positioning clamp assembly is arranged on the detection seat, and the first positioning clamp assembly can selectively clamp the first floating seat so as to limit the movement of the first floating seat;

the displacement detection mechanism is arranged on the rack and corresponds to one end, far away from the intermediate shaft, of the first floating seat, and is used for detecting the rotating displacement of the first floating seat.

3. The fit-gap detecting apparatus according to claim 2, wherein the displacement detecting mechanism includes a detecting block and two displacement sensors;

the two displacement sensors are arranged on the rack and are arranged oppositely;

the detection block is arranged at one end, far away from the intermediate shaft, of the first floating seat and between the two displacement sensors, and two opposite side faces of the detection block are respectively abutted to detection ends of the corresponding displacement sensors.

4. The assembly gap detection device according to claim 2, wherein the gap detection module further comprises a second floating fixture, the second floating fixture comprising a second floating seat, a second clamping assembly and at least one second positioning clamp assembly;

the second floating seat is movably arranged on the rack, wherein the displacement detection mechanism is arranged on the second floating seat;

the second clamping assembly is arranged on the second floating seat and located below the first clamping assembly and used for clamping the shaft tube, the at least one second positioning clamp assembly is arranged on the detection seat and can selectively clamp the second floating seat so as to limit the movement of the second floating seat.

5. The assembly gap detection apparatus according to claim 2, wherein the gap detection module further comprises a lifting mechanism, the lifting mechanism comprises a lifting driving assembly and a lifting platform;

the lifting driving assembly is arranged on the rack;

the lifting platform is arranged at the output end of the lifting driving component, and the lifting driving component is used for driving the lifting platform to lift along the vertical direction;

the detection seat, the first floating clamping mechanism and the displacement detection mechanism are all arranged on the lifting platform.

6. The fit-up gap detecting apparatus according to claim 1, wherein swing yokes are provided at both ends of the intermediate shaft, and at least one of the clamping modules is in clamping engagement with the swing yokes.

7. The fit-up gap detecting apparatus according to claim 1, wherein the two clamping modules are a first clamping module and a second clamping module, respectively;

the first clamping module is fixedly arranged on the rack;

the second clamping module is movably mounted on the rack and located above the first clamping module, and the second clamping module is connected with the output end of the first driving module.

8. The assembly gap detection device according to claim 7, wherein the first clamping module comprises a clamping seat, a positioning seat and two first clamping mechanisms arranged oppositely;

the positioning seat is arranged between the clamping seat and the two first clamping mechanisms and is used for positioning and supporting the intermediate shaft;

the first clamping mechanism comprises a clamping cylinder and a first clamping block assembly, the clamping cylinder is arranged on the clamping seat, the first clamping block assembly is arranged at the output end of the clamping cylinder, and the clamping cylinder is used for driving the first clamping block assembly to move towards the direction close to or far away from the positioning seat.

9. The fit-up gap detecting device according to claim 7, wherein the second clamping module includes a bearing seat, a transmission shaft, and a second clamping mechanism;

the bearing seat is arranged on the frame;

the transmission shaft penetrates through the bearing seat, and one end of the transmission shaft is connected with the output end of the first driving module;

the second clamping mechanism is arranged at the other end of the transmission shaft and is used for clamping the intermediate shaft.

10. The assembly gap detection device according to claim 1, wherein a support frame, a second driving module and a mounting sliding plate are arranged on the frame;

the support frame is vertically arranged on the rack;

the mounting sliding plate is slidably arranged on the rack, and the first driving module and the clamping module connected with the output end of the first driving module are arranged on the mounting sliding plate;

the second driving module is arranged on the supporting frame, and the output end of the second driving module is connected with the installation sliding plate and used for driving the installation sliding plate to move along the vertical direction.

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