CN116818314A

CN116818314A - Differential mechanism assembly detection line

Info

Publication number: CN116818314A
Application number: CN202310817583.6A
Authority: CN
Inventors: 沈国双; 李明军; 杜强; 王长阳; 李保廷
Original assignee: Shanghai Jingzhi Industry Co ltd
Current assignee: Shanghai Jingzhi Industry Co ltd
Priority date: 2023-07-05
Filing date: 2023-07-05
Publication date: 2023-09-29

Abstract

The application discloses a differential assembly detection line, which comprises a part feeding station, a manual assembly station, an axial float detection station, a dragging torque detection station, an angular clearance detection station, a cotter pin press-fitting station, a flange surface marking station, a circumferential surface marking station, a cotter pin detection NG blanking station and an OK piece blanking station.

Description

Differential mechanism assembly detection line

Technical Field

The application relates to the technical field of automobile accessory detection, in particular to a differential mechanism assembly detection line.

Background

The differential is a component of an automotive transmission system and is used for transmitting torque generated by an engine to wheels and allowing the wheels to rotate at different rotational speeds, and is usually arranged on a driving shaft of an automobile, so that the differential is mainly used for solving the problem of difference between the inner wheel speed and the outer wheel speed of the automobile when the automobile turns.

In the assembly production process of the differential mechanism, the matching precision of the differential mechanism is required to be detected, the existing detection means mainly depend on operators to detect all matching indexes of the differential mechanism through detection tools, the detection efficiency is low, the integral production beat of the differential mechanism is greatly affected, errors existing in detection results are difficult to control, and the integral quality of the differential mechanism is affected.

Disclosure of Invention

Aiming at the defects of the prior art, the application provides the differential mechanism assembly detection line with high detection efficiency and strong detection result reliability.

In order to achieve the above object, the present application is achieved by the following technical scheme.

The application provides a differential assembly detection line, comprising:

part feeding station for feeding differential mechanism component parts

The manual assembly station is used for receiving the differential mechanism accessory conveyed by the part feeding worker and executing the integral assembly of the differential mechanism;

the axial float detection station is used for detecting the axial float of the two half shaft gears of the differential mechanism in a rotating state;

the dragging torque detection station is used for detecting the maximum torque of the half shaft gear in the differential mechanism in a rotating state;

the angular gap detection station is used for detecting the rotation gap of the two side gears in the differential mechanism in the clockwise and anticlockwise directions;

The cotter pin press-fitting station is used for automatically press-fitting cotter pins on the differential mechanism;

the flange face marking station is used for automatically marking the flange face of the differential mechanism;

the circumferential surface marking station is used for automatically marking the circumferential surface of the differential mechanism;

the cotter pin detection and blanking station is used for detecting the press fitting of cotter pins on the differential mechanism and executing the NG blanking of the differential mechanism which does not reach the standard by the press fitting of the cotter pins;

and the OK piece blanking station is used for executing OK blanking of the differential mechanism which is detected to reach the standard integrally.

Further limited, the differential assembly detection line described above, wherein the axial play detection station is capable of applying a force along a first direction to the two side gears respectively when the differential housing is in a fixed state, applying a torque to the two side gears respectively, recording play values of the two side gears in the first direction, screening maximum play values of the two side gears in the first direction, and averaging the two maximum play values to obtain a high-point average value;

the axial float detection station can also apply acting force along the second direction to the two side gears respectively under the condition that the differential case is in a fixed state, apply torque to the two side gears respectively, record the float values of the two side gears in the second direction, screen the maximum float values of the two side gears in the second direction and average the two maximum float values to obtain a low-point average value;

The first direction and the second direction are respectively the directions of two sides of the half-shaft gear in the axial direction.

Further limited, the differential assembly detection line comprises an axial movement detection frame, wherein the axial movement detection frame is provided with an movement auxiliary tool for positioning the shell, an upper movement detection assembly and a lower movement detection assembly for applying axial acting force and torque to the two side gears respectively.

Further limited, the differential assembly detection line comprises a first lifting plate which is arranged on the movement detection frame in a lifting manner, and a first mounting table is fixedly arranged on the first lifting plate;

the first mounting table is fixedly provided with a first detection cylinder and a displacement sensor for detecting the telescopic distance of the first detection cylinder, a first ball spline assembly is mounted on the telescopic end of the first detection cylinder, and the first ball spline assembly is connected with a first tensioning assembly;

the first tensioning assembly is fixedly arranged at one end, far away from the first detection cylinder, of the inner spline shaft of the first ball spline assembly;

The upper movement detection assembly further comprises a first detection motor fixedly arranged on the first mounting table, a first driving gear is fixedly arranged at the power output end of the first detection motor, and a first driven gear meshed with the first driving gear is fixedly arranged on the outer sleeve of the first ball spline assembly.

Further limited, the differential assembly detection line further comprises a lifting cylinder fixedly arranged on the first mounting table, a lifting table is fixedly arranged at the telescopic end of the lifting cylinder, two clamping cylinders are symmetrically and fixedly arranged on the lifting table relative to the central axis of the first tensioning assembly, and the telescopic axis of each clamping cylinder is perpendicular to the central axis of the first tensioning assembly and a limiting clamping jaw is fixedly arranged at the telescopic end of each clamping cylinder;

the limiting clamping jaw can extend into the shell and axially abut against the side gear.

Further defined, the differential assembly inspection line is provided, wherein the drag torque inspection station is capable of rotating one of the side gears in a fixed state of the housing, and recording a maximum torque value of the actively rotating side gear during rotation.

Further defined, the differential assembly detection line comprises a mounting base, a torque detection assembly and a positioning assembly, wherein the torque detection assembly is arranged on the mounting base and is used for applying torque to the side gear at the top position of the shell, and the positioning assembly is used for positioning the shell;

the torque detection assembly comprises a second lifting plate which is arranged on the mounting base in a lifting manner, a second mounting table is fixedly arranged on the second lifting plate, a second detection motor is fixedly arranged on the second mounting table, and a power output end of the second detection motor is connected with a second tensioning assembly through a first torque sensor;

the power output end of the second detection motor is coaxial with the second tensioning assembly, and the two sensing ends of the first torque sensor are respectively connected with the power output end of the second detection motor and the second tensioning assembly.

Further limited, the above-mentioned differential assembly detection line, wherein, the angular clearance detection workstation can respectively apply the axial effort that deviates from to two side gears under the casing is in fixed state, to one of them side gear, and to another side gear in proper order apply clockwise torque, record the angular clearance value of the side gear of initiative rotation in anticlockwise.

Further defined, the differential assembly detection line comprises a gap detection frame, wherein the gap detection frame is provided with a gap auxiliary tool for positioning the shell, an upper gap detection assembly for applying axial force and clockwise and anticlockwise torque to the side gear at the top of the shell, and a lower gap detection assembly for applying axial force and limiting rotation to the side gear at the bottom of the shell;

the upper gap detection assembly comprises a lifting bracket which is arranged on the gap detection frame in a lifting manner, a horizontal floating assembly is arranged on the lifting bracket, a support frame is fixedly connected to the output end of the horizontal floating assembly, a third detection cylinder is fixedly arranged on the support frame, and the telescopic end of the third detection cylinder is connected with the tensioning mechanism through a second ball spline assembly;

the upper gap detection assembly further comprises an angle encoder which is fixedly arranged on the lifting support and is coaxial with the tensioning mechanism, a third detection motor is fixedly arranged on the support frame, the power output end of the third detection motor is connected with a transition shaft through a second torque sensor, a second driving gear is fixedly arranged on the transition shaft, and a second driven gear meshed with the second driving gear is fixedly arranged on an outer cylinder body of the second ball spline assembly;

The angle encoder is used for monitoring the rotation angle of the tensioning mechanism, the inner spline shaft of the second ball spline assembly is rotationally connected with the telescopic end of the third detection cylinder, the tensioning mechanism is fixedly arranged at one end, far away from the third detection cylinder, of the inner spline shaft of the second ball spline assembly, and the two sensing ends of the second torque sensor are connected with the power output end and the transition shaft of the third detection motor.

Further defined, the differential assembly detection line is characterized in that the upper gap detection assembly further comprises a tension and pressure detection assembly, the tension and pressure detection assembly comprises a fixed support fixedly arranged on the gap detection frame, a fixed sleeve is fixedly arranged on the fixed support, and a spring is arranged inside the fixed sleeve;

the tension and pressure detection assembly further comprises a connecting block fixedly arranged on the lifting support, a fisheye connector is hinged to the connecting block, and a tension and pressure sensor is connected between the fisheye connector and the spring;

the two sensing ends of the pulling and pressing sensor are respectively connected with the fish eye joint and one end of the spring, which is far away from the fixed sleeve.

The invention has at least the following beneficial effects:

1. under the condition that the differential mechanism is assembled, the differential mechanism is automatically detected in the axial movement, the dragging torque and the angular clearance, so that the measuring efficiency and the measuring precision are improved, on the one hand, the detection data are bound with the business card information of the differential mechanism, the traceability of the data in the assembly and detection process is realized, and the intelligent management of products is facilitated;

2. The upper and lower movement detection assemblies respectively apply axial acting force and torque to the two half-shaft gears in the shell, and the displacement sensor is used for acquiring the axial movement value in the rotation process of the half-shaft gears, so that the detection parameters in the axial movement detection process of the two half-shaft gears are completely the same, and the reliability and accuracy of detection data are effectively ensured;

3. the shell is positioned through the positioning component, and meanwhile, the torque detection component drives the half-shaft gear at the top of the shell to obtain torque values in the transmission process of the two half-shaft gears, so that the maximum dragging torque value is screened out to judge whether the matching precision meets the standard, the structure is simple, and the detection efficiency is greatly improved;

4. the axial acting force deviating from is applied to the two side gears through the upper clearance assembly and the lower clearance assembly respectively, the side gears at the bottom of the shell are simultaneously limited in rotation, and the limit angle of the side gears at the top of the shell under clockwise rotation is obtained through the angle encoder, so that the angular clearance maximum value between the two side gears is calculated and obtained.

Drawings

FIG. 1 is a schematic diagram of a specific structure of a differential assembly inspection line according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a differential mechanism in an embodiment of the present application;

FIG. 3 is an exploded view of a differential in accordance with an embodiment of the present application;

FIG. 4 is a cross-sectional view of the structure of the "differential" in an embodiment of the application;

FIG. 5 is a schematic view of a part of the structure of an "axial float detection station OP30" in the differential assembly line according to an embodiment of the present application;

FIG. 6 is a schematic view of a part of the structure of an "axial float detection station OP30" in the differential assembly line according to an embodiment of the present application;

fig. 7 is a schematic diagram of a detection principle of an axial float detection station OP30 in a differential assembly detection line according to an embodiment of the present application;

fig. 8 is a schematic diagram of a detection principle of an axial float detection station OP30 in a differential assembly detection line according to an embodiment of the present application;

FIG. 9 is a schematic diagram of a "drag torque detection station OP40" in a differential assembly line according to an embodiment of the disclosure;

FIG. 10 is a schematic view of a portion of a "torque detection assembly 420" of a differential assembly line according to an embodiment of the present application;

FIG. 11 is a schematic view of a portion of a "torque detection assembly 420" of a differential assembly line according to an embodiment of the present application;

Fig. 12 is a schematic diagram of a detection principle of a "drag torque detection station OP40" in a differential assembly line according to an embodiment of the present application;

FIG. 13 is a schematic view of a part of the structure of an "angular gap detection station OP50" in the differential assembly line according to an embodiment of the present application;

FIG. 14 is a schematic view of a part of the structure of an "angular gap detection station OP50" in the differential assembly line according to an embodiment of the present application;

FIG. 15 is a schematic view of a part of the structure of an "angular gap detection station OP50" in the differential assembly line according to an embodiment of the present application;

fig. 16 is a schematic diagram of a detection principle of an "angular gap detection station OP50" in a differential assembly line according to an embodiment of the present application.

Reference numerals

OP10, part feeding work station; OP20, manual assembly station; OP30, axial float detection station; 301. a first lifting plate; 302. lifting the sliding rail; 303. a clamping cylinder; 304. limiting clamping jaws; 305. a positioning frame; 306. a first tensioning assembly; 307. a first drive gear; 308. a first decelerator; 309. a first mounting table; 310. a first detection motor; 311. a displacement sensor; 312. a first detection cylinder; 313. a lifting cylinder; 314. a lifting table; 315. a first driven gear; 316. a first ball spline assembly; OP40, drag torque detection station; 410. a mounting base; 420. a torque detection assembly; 421. a second lifting plate; 422. a second mounting table; 423. a fixed table; 424. a second decelerator; 425. a second detection motor; 426. a first torque sensor; 427. a second tensioning assembly; 428. a first coupling; 430. a positioning assembly; OP50, angular gap detection station; 501. a lifting bracket; 502. a joint block; 503. a fish eye joint; 504. a pull-press sensor; 505. a spring; 506. a fixed sleeve; 507. a third detection cylinder; 508. a third detection motor; 509. a third decelerator; 510. a support frame; 511. a second torque sensor; 512. a second coupling; 513. a first connector plate; 514. a transverse slide block; 515. a transverse floating guide rail; 516. a transition shaft; 517. a longitudinal floating rail; 518. a longitudinal slide block; 519. a second connector plate; 520. a second ball spline assembly; 521. a fixed bracket; 522. a first support plate; 523. a connecting plate; 524. a rotating seat; 525. inserting a shaft; 526. a tensioning head; 527. a second support plate; 528. a second drive gear; 529. a second driven gear; OP60, cotter pin press-fitting work station; OP70, flange surface marking station; OP80, circumferential surface marking station; OP90 and cotter pin detection NG blanking work stations; OP100, OK piece blanking work station; 101. a housing; 102. a side gear; 103. a planetary gear; 104. a straight shaft; 105. a flat gasket; 106. ball pad.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the present application, fall within the scope of protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The differential assembly detection line provided by the embodiment of the application is described in detail through specific embodiments and application scenes thereof with reference to the accompanying drawings.

The embodiment of the application provides a differential assembly detection line, as shown in fig. 2 to 4, the differential comprises a shell 101, side gears 102 and planetary gears 103, a cavity for accommodating the side gears 102 and the planetary gears 103 is arranged in the shell 101, the side gears 102 are symmetrically and coaxially arranged in two, the two side gears 102 are respectively and rotatably arranged on the inner cavity of the shell 101, the planetary gears 103 are symmetrically and coaxially arranged in two, the two planetary gears 103 are respectively and rotatably arranged on the inner cavity of the shell 101, and the central axes of the two side gears 102 are perpendicular to the central axes of the two planetary gears 103.

Flat gaskets 105 are abutted between the side gears 102 and the inner walls of the inner cavities of the shell 101, planetary gears 103 are abutted between the planetary gears 103 and the inner walls of the inner cavities of the shell 101, a straight shaft 104 communicated with two groups of 130 and ball gaskets 106 is inserted into the shell 101, and the straight shaft 104 is used for limiting the planetary gears 103.

It will be appreciated that since the differentials are interfitted in each component configuration, the accuracy of the fit between the components needs to be checked after assembly.

As shown in fig. 1, the differential assembly detection line provided by the application sequentially comprises the following steps:

The part feeding station OP10 is used for feeding all the components of the differential and comprises a shell 101, a half-shaft gear 102, a planetary gear 103, a linear shaft 104, a flat gasket 105 and a ball gasket 106;

the manual assembly station OP20 is used for receiving the differential mechanism accessories conveyed by the part feeding station OP10 and integrally assembling the differential mechanism by manpower;

the axial float detection station OP30 is used for detecting the axial float of the two side gears 102 of the differential mechanism under rotation;

a drag torque detection station OP40 for detecting the maximum torque of the side gear 102 in the differential in a rotating state;

an angular gap detection station OP50 for detecting a rotational gap of the two side gears 102 in the differential in the clockwise and counterclockwise directions;

the cotter pin press-fitting station OP60 is used for automatically press-fitting cotter pins on the differential mechanism;

a flange face marking station OP70 is used for automatically marking the flange face of the differential mechanism;

a circumferential surface marking station OP80 for automatic marking on the circumferential surface of the differential mechanism;

the cotter pin detection and blanking station OP90 is used for detecting the press fitting of cotter pins on the differential mechanism and executing the blanking of the differential mechanism NG which does not reach the standard in the press fitting of the cotter pins;

and the OK piece blanking station OP100 is used for executing differential OK blanking which is detected to reach the standard integrally.

As shown in fig. 7 and 8, in the axial float detection station OP30, the detection principle adopted is specifically:

s1, respectively applying force along a first direction to two side gears 102 when a shell 101 is in a fixed state;

s2, respectively rotating the two side gears 102 and recording the play value of the two side gears 102 in the first direction;

s3, screening the maximum play values of the two side gears 102 in the first direction and averaging the two maximum play values to obtain a high-point average value;

s4, respectively applying a force along a second direction to the two side gears 102 when the shell 101 is in a fixed state;

s5, respectively rotating the two side gears 102 and recording the play value of the two side gears 102 in the second direction;

s6, screening the maximum play values of the two side gears 102 in the second direction and averaging the two maximum play values to obtain a low-point average value;

the first direction and the second direction are directions on two sides of the side gear 102 in the axial direction.

It will be appreciated that the play values of the two side gears 102 in the first direction or the second direction can be set to be obtained continuously, or can be set to be obtained periodically, the largest play value screened out by the former is more accurate, but the sampled data amount is larger, and the largest play value screened out by the latter has errors, but the sampled data amount is less, and the screening speed is faster.

As shown in fig. 12, in the drag torque detection station OP40, the detection principle adopted is specifically:

s1, rotating one of the side gears 102 in a fixed state of the housing 101;

s2, recording the torque value of the side gear 102 which actively rotates in the rotating process, and screening the maximum torque value.

It can be understood that, in the same way as the above, the torque value obtaining manner can be continuous obtaining or periodic obtaining, and the specific setting manner is formulated based on the requirement of the maximum torque value obtaining precision, which is not described in detail herein.

As shown in fig. 16, in the angular gap detection station OP50, the detection principle adopted is specifically:

s1, respectively applying a force to one side of a flat gasket 105 close to a corresponding position to two side gears 102 when a shell 101 is in a fixed state;

s2, fixing one side gear 102, sequentially rotating the other side gear 102 clockwise and anticlockwise, and recording the maximum rotation angle of the side gear 102 in the clockwise and anticlockwise directions;

and S3, adding the maximum rotation angle values of the side gears 102 in the clockwise and anticlockwise directions to obtain the angular clearance values of the two side gears 102.

It will be appreciated that the force applied to the side of the side gear 102 close to the flat washer 105 at the corresponding position is to set the positioning reference on the housing 101, because the accuracy of the engagement between the housing 101 and the side gear 102 is more reliable, and if the force applied to the side gear 102 away from the flat washer 105 at the corresponding position is applied, the detection of the angular gap between the two side gears 102 is affected due to the fact that the planetary gears 103 themselves have an error in engagement with the housing 101 and the side gear 102.

It can be appreciated that in the axial float detection station OP30, the drag torque detection station OP40, and the angular gap detection station OP50, the unqualified workpieces can be directly fed, or all detection processes can be performed on the differential and the unified feeding can be performed in the cotter pin detection NG feeding station OP90, the former can reduce unnecessary detection amounts, the latter can obtain complete precision data of the differential, and the differential can be comprehensively reworked after the feeding.

It can be understood that, for the axial play detection station OP30, the drag torque detection station OP40, and the angular play detection station OP50, the detection sequence is not limited to the above-mentioned one, for example, the differential may perform the angular play detection first and then perform the axial play detection or the drag torque detection, or may be configured to perform the drag torque detection first and then perform the angular play detection or the axial play detection, so long as it is ensured that the differential completes all the detection processes, and the detection sequence of each index is not particularly limited.

In the cotter press station OP60, the cotter press is used for limiting each component, and includes fixing a spool 104 on the housing 101.

In the flange surface marking station OP70 and the circumferential surface marking station OP80, the differential is marked to mark the product number and the information, so that the detection result of the differential is bound with the information of the differential, and further the data tracing of the detection information is realized.

According to the differential assembly detection line, the differential assembly detection line is adopted to automatically detect the axial movement, the dragging torque and the angular clearance under the condition that the assembly of the differential is completed, so that the measurement efficiency and the measurement precision are improved on one hand, and on the other hand, the detection data are bound with the business card information of the differential, so that the traceability of the data in the assembly detection process is realized, and the intelligent management of products is facilitated.

In a preferred embodiment, as shown in fig. 5 and 6, the axial play detection station OP30 includes a play detection frame, on which play auxiliary tools for positioning the housing 101, an upper play detection assembly and a lower play detection assembly for applying axial force and torque to the two side gears 102, respectively, are provided.

The upper movement detection assembly comprises a first lifting plate 301 which is arranged on a movement detection frame in a lifting manner, a first mounting table 309 is fixedly arranged on the first lifting plate 301, a first detection cylinder 312 and a displacement sensor 311 for detecting the telescopic distance of the first detection cylinder 312 are fixedly arranged on the first mounting table 309, a first ball spline assembly 316 is arranged on the telescopic end of the first detection cylinder 312, wherein an inner spline shaft of the first ball spline assembly 316 is rotationally connected with the telescopic end of the first detection cylinder 312, and a first tensioning assembly 306 is fixedly connected with one end of the inner spline shaft of the first ball spline assembly 316, which is far away from the first detection cylinder 312.

The upper play detection assembly further comprises a first speed reducer 308 fixedly arranged on the first mounting table 309, a power input end of the first speed reducer 308 is connected with a power output end of the first detection motor 310, a first driving gear 307 is fixedly arranged at the power output end of the first speed reducer 308, and a first driven gear 315 meshed with the first driving gear 307 is fixedly arranged on an outer sleeve of the first ball spline assembly 316.

It can be appreciated that the internal spline shaft of the first ball spline assembly 316 is slidably disposed in the outer cylinder, and when the first detection cylinder 312 stretches, the internal spline shaft of the first ball spline assembly 316 can be driven to axially move relative to the outer sleeve, so as to drive the first tensioning assembly 306 to axially move; when the first detection motor 310 drives the first driving gear 307 to rotate through the first speed reducer 308, the first driving gear 307 drives the first driven gear 315 to rotate, thereby driving the first ball spline assembly 316 to rotate and further driving the first tensioning assembly 306 to rotate.

The upper movement detection assembly further comprises a lifting cylinder 313 fixedly arranged on the first mounting table 309, a lifting table 314 is fixedly arranged on the telescopic end of the lifting cylinder 313, two clamping cylinders 303 are symmetrically and fixedly arranged on the lifting table 314 relative to the central axis of the first tensioning assembly 306, and a limiting clamping jaw 304 is fixedly arranged on the telescopic end, perpendicular to the central axis of the first tensioning assembly 306, of the telescopic axis of the clamping cylinder 303.

It can be appreciated that, after the housing 101 is positioned by the play auxiliary tool, the two clamping cylinders 303 stretch and retract to drive the limiting clamping jaw 304 to extend into the inner cavity of the housing 101, and when the lifting cylinder 313 drives the lifting table 314 to lift, an axial force can be applied to the side gear 102 inside the housing 101 by the limiting clamping jaw 304.

During detection, the shell 101 is fixed through the play auxiliary tool, then the first lifting plate 301 descends or the first detection cylinder 312 stretches out to drive the first tension component 306 to tension the side gear 102 at the top of the shell 101, along with the descending of the first lifting plate 301 or the stretching out of the first detection cylinder 312, the side gear 102 at the top of the shell 101 is subjected to axial downward pressure, at the moment, the first lifting plate 301 drives the first tension component 306 to rotate, so that the side gear 102 at the top of the shell 101 is driven to rotate, and in the rotating process of the side gear 102, the displacement sensor 311 can record the length change of the telescopic end of the first detection cylinder 312, so that the rotating axial play value of the side gear 102 at the top of the shell 101 when the side gear 102 is subjected to the downward pressure is calculated; when the limiting clamping jaw 304 abuts against the bottom of the side gear 102 at the top of the shell 101 and the lifting cylinder 313 is lifted to drive the limiting clamping jaw 304 to apply an axial upward pushing force to the side gear 102, the first lifting plate 301 drives the first tensioning assembly 306 to rotate at the moment, so that the side gear 102 at the top of the shell 101 is driven to rotate, in the rotating process of the side gear 102, the displacement sensor 311 can record the length change of the telescopic end of the first detection cylinder 312, so that the rotating axial play value of the side gear 102 at the top of the shell 101 when the top pushing force is applied is calculated, and the final high-point average value and the low-point average value can be obtained by combining the maximum rotating axial play value obtained by the lower play detection assembly through screening the maximum rotating axial play value of the side gear 102 at the top of the shell 101 under the conditions of lower pressure and the upper pushing force.

It will be appreciated that the lower play detection assembly can be provided as a mirror image of the upper play detection assembly through which rotational play detection is performed on the side gear 102 at the bottom of the housing 101.

In the embodiment of the present application, with the above axial play detection workstation OP30, an axial force and a torque are applied to two side gears 102 in a housing 101 by an upper play detection assembly and a lower play detection assembly, and an axial play value in the rotation process of the side gears 102 is obtained by a displacement sensor 311, and the magnitude of the applied force or torque to the side gears 102 is controllable, so that the detection parameters in the axial play detection process of the two side gears 102 are completely the same, and the reliability and accuracy of the detection data are effectively ensured.

It is to be understood that the structural forms of the upper and lower play detection assemblies are not limited to the above-mentioned one, so long as the axial force and torque can be applied to the side gear 102 at the corresponding position, and the axial play value in the rotation process of the side gear 102 can be obtained at the same time, which is not described herein in detail.

In a preferred embodiment, as shown in fig. 5 and 6, two lifting slide rails 302 are symmetrically and fixedly arranged on the first lifting plate 301 about the first tensioning assembly 306, and the two lifting slide rails 302 are respectively parallel to the telescopic axial direction of the lifting cylinder 313.

Wherein, the lifting platform 314 is slidably connected with the two lifting slide rails 302, and when the lifting cylinder 313 drives the lifting platform 314 to lift, the lifting platform 314 can be guided by the lifting slide rails 302, so as to improve the lifting stability of the lifting platform 314.

In a preferred embodiment, as shown in fig. 5 and 6, the positioning frame 305 is fixedly connected to the first mounting table 309, and the first tensioning component 306 is penetrated and is disposed on the positioning frame 305 in a clearance fit manner.

In a preferred embodiment, as shown in fig. 9 to 11, the drag torque detection station OP40 includes a mounting base 410, and a torque detection assembly 420 and a positioning assembly 430 disposed on the mounting base 410, wherein the torque detection assembly 420 is used to apply torque to the side gear 102 at the top position of the housing 101, and the positioning assembly 430 is used to position the housing 101.

The torque detection assembly 420 comprises a second lifting plate 421 which is arranged on the mounting base 410 in a lifting manner, a second mounting table 422 is fixedly arranged on the second lifting plate 421, a fixing table 423 is fixedly arranged on the second mounting table 422, a second speed reducer 424 is fixedly arranged on the fixing table 423, a power input end of the second speed reducer 424 is connected with a power output end of a second detection motor 425, and a second tensioning assembly 427 is connected with a power output end of the second speed reducer 424 through a first torque sensor 426.

The power output end of the second speed reducer 424 is coaxial with the second tensioning assembly 427, two sensing ends of the first torque sensor 426 are respectively connected with the power output end of the second speed reducer 424 and the second tensioning assembly 427 through a first coupling 428, and when the second detection motor 425 rotates, the second detection motor 425 can drive the first torque sensor 426 and the second tensioning assembly 427 to rotate through the second speed reducer 424.

During detection, the shell 101 is positioned through the positioning assembly 430, the second lifting plate 421 is lifted to drive the second tensioning assembly 427 to extend into the side gear 102 at the top position of the shell 101, so that tensioning of the second tensioning assembly 427 to the side gear 102 is achieved, at the moment, the second detection motor 425 rotates to drive the second tensioning assembly 427 to rotate, so that the side gear 102 at the top position of the shell 101 is driven to rotate, and because the two sensing ends of the first torque sensor 426 are respectively connected with the power output end of the second speed reducer 424 and the second tensioning assembly 427 through the first coupling 428, when the second tensioning assembly 427 drives the side gear 102 to rotate, the two sensing ends of the first torque sensor 426 can acquire torque changes between the power output end of the second speed reducer 424 and the second tensioning assembly 427, so that the maximum dragging torque of the side gear 102 is obtained.

In the embodiment of the application, the drag torque detection station OP40 is adopted, the positioning component 430 is used for positioning the shell 101, and the torque detection component 420 is used for driving the side gears 102 at the top of the shell 101 to obtain the torque values in the transmission process of the two side gears 102, so that the maximum drag torque value is screened out to judge whether the matching precision meets the standard, the structure is simple, and the detection efficiency is greatly improved.

It is to be understood that the arrangement form of the drag torque detection station OP40 is not limited to the above-described one, and for example, it is possible to apply torque to the side gears 102 at the bottom position of the housing 101 to obtain the maximum drag torque of the side gears 102, so long as it is possible to obtain the torque value by rotating one of the side gears 102, and detailed description thereof is omitted.

In a preferred embodiment, as shown in fig. 13 to 15, the angular gap detection station OP50 includes a gap detection frame, on which a gap auxiliary tool for positioning the housing 101, an upper gap detection assembly for applying an axial force and a clockwise and counterclockwise torque to the side gear 102 at the top position of the housing 101, and a lower gap detection assembly for applying an axial force and a rotation limit to the side gear 102 at the bottom position of the housing 101 are provided.

Go up clearance detection subassembly and include liftable setting up the lifting support 501 on the clearance detection frame, be equipped with horizontal floating subassembly on the lifting support 501, horizontal floating subassembly's output fixedly connected with is equipped with support frame 510, and the fixed third that is equipped with on the support frame 510 detects cylinder 507, and the flexible end of third detection cylinder 507 is connected with the tight mechanism that rises through second ball spline subassembly 520.

Wherein, the inner spline shaft of the second ball spline assembly 520 is rotationally connected with the telescopic end of the third detection cylinder 507, and the tensioning mechanism comprises a rotating seat 524 fixedly arranged on the lifting bracket 501, an inserting shaft 525 fixedly arranged at one end of the second ball spline assembly 520 far away from the third detection cylinder 507 and rotationally connected with the rotating seat 524, and a tensioning head 526 fixedly arranged at one side end of the inserting shaft 525 far away from the second ball spline assembly 520.

The upper gap detection assembly further comprises an angle encoder which is fixedly arranged on the lifting support 501 and is coaxial with the tensioning head 526, the angle encoder is used for monitoring the rotation angle of the tensioning head 526, a third speed reducer 509 is fixedly arranged on the support 510, the power input end of the third speed reducer 509 is connected with the power output end of the third detection motor 508, and the power output end of the third speed reducer 509 is connected with the transition shaft 516 through a second torque sensor 511.

Specifically, the two sensing ends of the second torque sensor 511 are respectively connected with the power output end of the third reducer 509 and the transition shaft 516 through the second coupling 512, the second driving gear 528 is fixedly arranged on the transition shaft 516, and the second driven gear 529 meshed with the second driving gear 528 is fixedly arranged on the outer cylinder of the second ball spline assembly 520.

It can be understood that the internal spline shaft of the second ball spline assembly 520 is slidably disposed in the outer cylinder, and when the second support plate 527 stretches, the internal spline shaft of the second ball spline assembly 520 can be driven to axially move relative to the outer sleeve, so as to drive the tensioning mechanism to axially move; when the third detection motor 508 drives the transition shaft 516 and the second driving gear 528 to rotate through the third reducer 509, the second driving gear 528 drives the second driven gear 529 to rotate, so as to drive the second ball spline assembly 520 to rotate, and further drive the tensioning mechanism to rotate.

During detection, the shell 101 is fixed through the clearance auxiliary tool, then the lifting bracket 501 descends or the third detection cylinder 507 stretches out to drive the tensioning head 526 to tension the side gear 102 at the top of the shell 101, at the moment, the lifting bracket 501 ascends or the third detection cylinder 507 retracts to apply an axial upward pulling force to the side gear 102 at the top of the shell 101, meanwhile, the lower clearance detection assembly limits the rotation of the side gear 102 at the bottom of the shell 101 and applies an axial downward pulling force to the side gear 102, at the moment, the third detection motor 508 drives the second ball spline assembly 520 to rotate clockwise to drive the side gear 102 at the top of the shell 101 to synchronously rotate clockwise, and in the process of rotating the side gear 102, the second torque sensor 511 can obtain the torque change between the transition shaft 516 and the output end of the third speed reducer 509, thereby judging whether the side gear 102 at the top of the housing 101 reaches the limit position in the clockwise direction, i.e., the gap between the two side gears 102 in the clockwise direction is zero, when the second torque sensor 511 judges that the side gear 102 at the top of the housing 101 rotates clockwise to the limit position, the angle encoder records the rotation angle of the side gear 102 at the top of the housing 101 in the clockwise direction at this time, and simultaneously drives the second ball spline assembly 520 to rotate counterclockwise by the third detection motor 508, thereby driving the side gear 102 at the top of the housing 101 to rotate counterclockwise synchronously, and during the rotation of the side gear 102, judges whether the side gear 102 at the top of the housing 101 reaches the limit position in the counterclockwise direction by the second torque sensor 511, when the second torque sensor 511 judges that the side gear 102 at the top of the housing 101 rotates counterclockwise to the limit position, the angle encoder records the rotation angle of the top side gear 102 of the housing 101 in the counterclockwise direction at this time, and adds the rotation angle values of the top side gear 102 of the housing 101 in the clockwise and counterclockwise directions, thereby obtaining the maximum value of the angular gap between the two side gears 102.

It will be appreciated that the zero point of the angle encoder is the initial angular position of the tensioning head 526 when the side gear 102 is tensioned, and the order of acquiring the clockwise and counterclockwise rotation angle values of the side gear 102 is not limited to the above, for example, the rotation angle in the counterclockwise state can be acquired first, and then the rotation angle in the clockwise state can be acquired, which has no influence on the finally obtained maximum value of the angular gap.

It will be appreciated that the arrangement of the upper and lower gap detecting assemblies is not limited to the above-mentioned one, and for example, the upper gap detecting assembly can be configured to rotate and limit the side gear 102 at the top of the housing 101 and apply an axial force and a clockwise and counterclockwise torque to the side gear 102 at the bottom of the housing 101 under the axial action of the upper gap detecting assembly, so long as it is ensured that the two side gears 102 are subjected to an axial force near the flat washer 105 at the corresponding position, one side gear 102 is in a rotation limit state, a clockwise and counterclockwise torque is applied to the other side gear 102, and the maximum value of the angular gap between the two side gears 102 can be calculated by obtaining the limit rotation angle of the rotating side gear 102 and the clockwise and counterclockwise direction.

In the embodiment of the application, the angular gap detection station OP50 is adopted, the upper gap component and the lower gap component are used for respectively applying opposite axial acting force to the two side gears 102, meanwhile, the rotation of the side gears 102 at the bottom of the shell 101 is limited, and the limit angle of the side gears 102 at the top of the shell 101 under clockwise rotation is obtained through the angle encoder, so that the maximum value of the angular gap between the two side gears 102 is calculated and obtained, and the second torque sensor 511 can ensure the torque uniformity of the side gears 102 under the limit rotation angle, so that the error of manual detection is avoided, and the finally obtained maximum value of the angular gap is more accurate.

In a preferred embodiment, as shown in fig. 13 to 15, the horizontal floating assembly comprises two sets of transverse floating rails 515 fixedly arranged on the lifting support 501 and parallel to each other, each set of transverse floating rails 515 comprises two transverse sliding blocks 514 which are collinear, longitudinal floating rails 517 are fixedly arranged between the two transverse sliding blocks 514 on the same side of the two sets of transverse sliding blocks 514 respectively, the two longitudinal floating rails 517 are parallel to each other and perpendicular to the transverse floating rails 515, and longitudinal sliding blocks 518 are slidably arranged on the longitudinal floating rails 517.

A connecting plate 523 is fixedly arranged on the longitudinal sliding block 518, a first connecting plate 513 and a second connecting plate 519 are fixedly arranged on the connecting plate 523, wherein an outer cylinder body of the second ball spline assembly 520 is rotationally connected with the second connecting plate 519, and the transition shaft 516 is rotationally connected with the second connecting plate 519.

The longitudinal sliding block 518 is fixedly provided with a first support plate 522 and a second support plate 527, and the first support plate 522 and the second support plate 527 are respectively fixedly connected with the support frame 510.

It will be appreciated that when the tensioning mechanism is lifted to tension the side gear 102, because the tensioning head 526 may deviate from the side gear 102 in the axial direction, the horizontal floating assembly may enable the tensioning head 526 to move in the horizontal plane to fine the axial deviation from the side gear 102, thereby ensuring the reliability of the positioning of the tensioning assembly to the side gear 102.

In a preferred embodiment, as shown in fig. 13 to 15, the tension and pressure detecting assembly further comprises a fixing bracket 521 fixedly arranged on the gap detecting frame, a fixing sleeve 506 is fixedly arranged on the fixing bracket 521, and a spring 505 is arranged inside the fixing sleeve 506.

The tension and pressure detection assembly further comprises a connecting block 502 fixedly arranged on the lifting support 501, a fisheye connector 503 is hinged to the connecting block 502, and a tension and pressure sensor 504 is connected between the fisheye connector 503 and the spring 505.

Specifically, one end of the spring 505 is connected to the top wall of the fixed sleeve 506, the other end is connected to the tension and compression sensor 504, and two sensing ends of the tension and compression sensor 504 are respectively connected to the spring 505 and the fisheye joint 503.

It can be appreciated that when the lifting support 501 is lifted relative to the gap detection frame to apply an axial force to the half gears 102, a specific value for applying the axial force can be obtained through the tension and compression sensor 504, so that uniformity of the applied force on the two half gears 102 is ensured, consistency of detection parameters is ensured, meanwhile, the tension and compression sensor 504 adopts a floating suspension arrangement mode, and can adapt to a stroke error in the lifting process of the lifting support 501, and stability of a detection structure is improved.

In a preferred embodiment, as shown in fig. 1, pallet transmission is adopted between the stations, so that the circulation of the differential between the stations is realized, and the overall assembly and detection beats are further reduced.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. A differential assembly inspection line, comprising:

part feeding station for feeding differential mechanism component parts

2. The differential assembly inspection line according to claim 1, wherein the axial play detection station is capable of applying forces in a first direction to the two side gears respectively, applying torques to the two side gears respectively, recording play values of the two side gears in the first direction, screening maximum play values of the two side gears in the first direction, and averaging the two maximum play values to obtain a high-point average value when the differential housing is in a fixed state;

3. The differential assembly inspection line of claim 2, wherein the axial play detection station comprises a play detection frame provided with a play auxiliary tool for positioning the housing, an upper play detection assembly and a lower play detection assembly for applying axial force and torque to the two side gears, respectively.

4. The differential assembly inspection line of claim 3, wherein the upper tamper detection assembly includes a first lifting plate liftable on the tamper detection frame, the first lifting plate having a first mounting table fixedly mounted thereon;

5. The differential assembly inspection line according to claim 4, wherein the upper movement detection assembly further comprises a lifting cylinder fixedly arranged on the first mounting table, a lifting table is fixedly arranged on a telescopic end of the lifting cylinder, two clamping cylinders are symmetrically and fixedly arranged on the lifting table with respect to a central axis of the first tensioning assembly, a telescopic axis of each clamping cylinder is perpendicular to the central axis of the first tensioning assembly, and a limiting clamping jaw is fixedly arranged on the telescopic end of each clamping cylinder;

6. The differential assembly inspection line of claim 1, wherein the drag torque inspection station is capable of rotating one of the side gears while the housing is in a stationary state, registering a maximum torque value of the actively rotating side gear during rotation.

7. The differential assembly line of claim 6, wherein the drag torque detection station comprises a mounting base and a torque detection assembly disposed on the mounting base for applying torque to the side gear at a top position of the housing, a positioning assembly for positioning the housing;

8. The differential assembly inspection line of claim 1, wherein the angular gap inspection station is capable of applying an axial force to the two side gears in a fixed state of the housing, applying a rotational limit to one of the side gears, and sequentially applying a clockwise torque to the other side gear, and recording an angular gap value of the actively rotating side gear in a clockwise direction.

9. The differential assembly inspection line of claim 8, wherein the angular gap inspection station comprises a gap inspection frame provided with a gap auxiliary tool for positioning the housing, an upper gap inspection assembly for applying an axial force and a clockwise and counterclockwise torque to the housing top position side gear, and a lower gap inspection assembly for applying an axial force and a rotational limit to the housing bottom position side gear;

10. The differential assembly inspection line of claim 9, wherein the upper gap inspection assembly further comprises a pull pressure inspection assembly comprising a fixed bracket fixedly disposed on the gap inspection frame, a fixed sleeve fixedly disposed on the fixed bracket, and a spring disposed inside the fixed sleeve;