CN212159073U - Detection device for operation performance of automobile steering column - Google Patents

Abstract

The utility model relates to a detection device, concretely relates to a detection device for auto steering tubular column operating performance. The device comprises a frame, a clamping fixed table, an angle detection head, a central shaft detection head and a handle detection head, wherein the clamping fixed table is arranged on the frame, and the handle detection head is arranged on the frame on one side of the clamping fixed table; an angle detection head is arranged on the machine frame in front of the clamping fixing table, and a central shaft detection head is arranged on the machine frame above the angle detection head. The device can display all detection parameters on a display screen in the detection process so as to visually observe and compare all aspects of the operation performance of the workpiece, further parameterize and accurately detect the operation performance of the workpiece, namely detect the quality of the workpiece; the problems that an existing detection device is inaccurate in detection result, large in labor intensity and low in working efficiency, and cannot parameterize a detection process are solved, and the device is particularly suitable for detecting the operation performance of a steering column.

Description

Detection device for operation performance of automobile steering column

Technical Field

The utility model relates to a detection device, concretely relates to a detection device for auto steering tubular column operating performance.

Background

The operation performance of the automobile steering column needs to be confirmed in the general assembly process so as to ensure the quality of the automobile steering column, and the important process in the general assembly process is an important link for ensuring the consistency of the loading process in the large-scale online manufacturing and the early stage of the mass production of products.

The traditional performance detection is to manually and repeatedly confirm the operation performance of the steering column, and has the following disadvantages: 1. due to the individual difference among operators, the performance of the steering column after detection is greatly different, namely the detection result is inaccurate; 2. the process of detecting performance cannot be parameterized, and further, the difference of performance cannot be displayed intuitively; 3. the detection process is that the different aspects of steering column performance are detected for many prefaces, need confirm repeatedly simultaneously, lead to intensity of labour big and work efficiency lower.

Disclosure of Invention

The utility model aims at: the detection device for the operation performance of the automobile steering column can parameterize the detection process, effectively reduce labor intensity and improve working efficiency.

The technical scheme of the utility model is that:

the utility model provides a detection apparatus for be used for car steering column operating performance, it detects head, center pin by frame, clamping fixed station, angle and detects the head and the handle detects the head constitutes its characterized in that: a clamping fixed table is arranged on the frame, and a handle detection head is arranged on the frame on one side of the clamping fixed table; an angle detection head is arranged on the machine frame in front of the clamping fixing table, and a central shaft detection head is arranged on the machine frame above the angle detection head; a control cabinet is arranged on one side of the rack, and a display screen is arranged on the rack between the control cabinet and the central shaft detection head; the display screen, the clamping fixed table, the angle detection head, the central shaft detection head and the handle detection head are respectively connected with the control cabinet.

The clamping fixing table is composed of a clamping fixing plate, an extrusion cylinder, a pressing block and a positioning pin, the extrusion cylinder is symmetrically and fixedly arranged on the front end face of the clamping fixing plate through a mounting seat, and the extrusion cylinder is connected with the control cabinet; an extrusion block is fixedly arranged at the end of a piston rod of the extrusion cylinder, a pressing block is movably arranged on a clamping fixing plate above the inner side of the extrusion block through a fixing seat and a pin shaft, and a plurality of positioning pins are arranged on the clamping fixing plate between the extrusion cylinders.

The cross section of the clamping fixing plate is triangular.

The extrusion block is a conical body, and the pressing block is in sliding contact connection with the end of the extrusion block so as to force the pressing block to rotate around the pin shaft and control the extrusion force applied by the extrusion block to the pressing block.

The handle detection head consists of an assembly seat, a driving motor, a clamping block and a torque detector, wherein the end head of one end of the assembly seat is provided with the driving motor through a reduction gearbox, and the other end of the assembly seat is provided with a driving gear box; an input shaft of the driving gear box is connected with an output shaft of the reduction gearbox through a torque detector, and a clamping block is arranged on the output shaft of the driving gear box through a rotating handle; the driving motor and the torque detector are respectively connected with the control cabinet.

The clamping block comprises an installation rod and a clamping head, the clamping head is U-shaped, the installation rod is arranged on the clamping head, and the installation rod is movably inserted into the rotary handle so as to be connected with the workpiece handle.

The angle detection head consists of a supporting seat, a pushing block, an electric cylinder of the pushing block and a pressure sensor, and the pushing block is arranged on the top end face of the supporting seat through symmetrically arranged sliding rails so as to ensure the stability of the pushing block during movement; a piston rod of the electric pushing block cylinder is fixedly connected with the pushing block through a pressure sensor; the electric cylinder of the pushing block and the pressure sensor are respectively connected with the control cabinet.

The top end face of the supporting seat is arranged in an inclined shape.

The central shaft detection head is composed of a mounting seat, a rotating motor, a motor moving electric cylinder, a detection clamping jaw and a connecting sleeve, the rotating motor is movably mounted on the top end face of the mounting seat through a sliding rail, the motor moving electric cylinder is arranged on the mounting seat on one side of the rotating motor, and a piston rod of the motor moving electric cylinder is fixedly connected with the rotating motor; the other side of the rotating motor is provided with a detection clamping jaw which is fixedly connected with the rotating motor through a tension and pressure sensor; a connecting sleeve is arranged between the detection clamping jaws and is fixedly connected with an output shaft of a rotating motor penetrating through the tension pressure sensor through a torque sensor; the rotating motor, the motor moving electric cylinder, the tension pressure sensor and the torque sensor are respectively connected with the control cabinet.

The top end surface of the mounting seat is in a slope shape.

The beneficial effects of the utility model reside in that:

the detection device for the operating performance of the automobile steering column can conveniently clamp and fix a workpiece through the clamping and fixing table in the detection process, can detect the handle opening force and the locking force of the workpiece through the handle detection head, can detect the rotation angle and the rotation resistance of the workpiece column and the holding force of the handle through the angle detection head, can detect the telescopic adjusting force and the no-load moment of the central shaft of the workpiece through the central shaft detection head, can display all detection parameters on a display screen, and can visually observe and compare the handle opening force and the locking force of the workpiece, the rotation angle and the rotation resistance of the column, the telescopic adjusting force and the no-load moment of the central shaft, further can parametrically and accurately detect the operating performance of the workpiece, namely detect the quality of the workpiece; the problems that an existing detection device is inaccurate in detection result, large in labor intensity and low in working efficiency, and cannot parameterize a detection process are solved, and the device is particularly suitable for detecting the operation performance of a steering column.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

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

FIG. 3 is a schematic left side view of FIG. 1;

fig. 4 is a schematic structural view of the clamping and fixing table of the present invention;

FIG. 5 is a schematic front view of FIG. 4;

FIG. 6 is a schematic left side view of FIG. 4;

FIG. 7 is a schematic structural view of the handle detecting head of the present invention;

FIG. 8 is a schematic front view of FIG. 7;

FIG. 9 is a schematic top view of FIG. 7;

fig. 10 is a schematic structural view of the angle detecting head of the present invention;

FIG. 11 is a schematic right view of FIG. 10;

fig. 12 is a schematic structural view of the center shaft detecting head of the present invention;

FIG. 13 is a front schematic view of FIG. 12;

FIG. 14 is a schematic left side view of FIG. 12;

fig. 15 is a graph of the opening force and the locking force of the handle of the present invention;

fig. 16 is a graph of the central shaft expansion adjusting force of the present invention;

figure 17 is a graph of the center pin no-load torque of the present invention;

fig. 18 is a graph of the rotation resistance and rotation angle of the pipe column of the present invention;

figure 19 is a graph of handle retention of the present invention;

fig. 20 is a graph of the center pin to pipe string clearance of the present invention.

In the figure: 1. the device comprises a rack, 2, a clamping fixing plate, 3, an extrusion cylinder, 4, a pressing block, 5, a positioning pin, 6, an extrusion block, 7, an assembly seat, 8, a driving motor, 9, a clamping head, 10, a torque detector, 11, a reduction gearbox, 12, a driving gear box, 13, an installation rod, 14, a rotating handle, 15, a supporting seat, 16, a pushing block, 17, an electric cylinder of the pushing block, 18, a pressure sensor, 19, the installation seat, 20, a rotating motor, 21, an electric cylinder of a motor moving, 22, a detection clamping jaw, 23, a connecting sleeve, 24, a pulling pressure sensor, 25, a torque sensor, 26, a control cabinet, 27, a display screen, 28, a workpiece, 29 and a floating adapter.

Detailed Description

The detection device for the operating performance of the automobile steering column comprises a rack 1, a clamping fixing table, an angle detection head, a central shaft detection head and a handle detection head, wherein the rack 1 is a frame body, the clamping fixing table is arranged on the rack 1 and consists of a clamping fixing plate 2, an extrusion cylinder 3, a compression block 4 and a positioning pin 5, the section of the clamping fixing plate 2 is triangular, the extrusion cylinder 3 (FESTO CDM2F25-75-M9PL type) is symmetrically and fixedly arranged on the front end face of the clamping fixing plate 2 through a mounting seat, the extrusion cylinder 3 is communicated with an air source through a connecting pipe, an extrusion block 6 is fixedly arranged at the end of a piston rod of the extrusion cylinder 3, and the extrusion block 6 is a conical body; a pressing block 4 is movably mounted on the clamping fixing plate 2 above the inner side of the extrusion block 6 through a fixing seat and a pin shaft, the pressing block is in sliding contact with the end of the extrusion block to force the pressing block to rotate around the pin shaft and control the extrusion force applied by the extrusion block to the pressing block, and during work, the extrusion cylinder 3 can drive the extrusion block 6 to move, so that in the process that the extrusion block 6 extrudes the pressing block 4, the pressing block 4 can rotate around the pin shaft as an axis under the action of the inclined surface of the extrusion block 6 to compress a workpiece 28; a plurality of positioning pins 5 are arranged on the clamping fixing plate 2 between the extrusion cylinders 3, the positioning pins 5 are used for being matched with positioning holes in the workpiece 28 to position the workpiece 28, and therefore the workpiece 28 is fixed on the clamping fixing plate 2 through the matching of the positioning pins 5 and the pressing blocks 4, and the workpiece 28 is prevented from moving in the detection process.

A handle detection head is arranged on the rack 1 on one side of the clamping fixing table, the handle detection head is composed of an assembly seat 7, a driving motor 8, a clamping block and a torque detector 10, a reduction gearbox 11 (planet GPL70(i = 10)) is arranged at one end of the assembly seat 7, the driving motor 8 is installed at the upper end of the reduction gearbox 11, and an output shaft of the driving motor 8 is connected with an input shaft of the reduction gearbox 11 through a coupler; a driving gear box 12 (planet GPL10 type) is arranged at the other end of the assembling seat 7, a clamping block is arranged on an output shaft of the driving gear box 12 through a rotating handle 14, the clamping block is composed of an installation rod 13 and a clamping head 9, the clamping head 9 is U-shaped, the installation rod 13 is arranged on the clamping head 9, and the installation rod 13 is movably inserted and connected with the rotating handle 14 so that the clamping head 9 can be conveniently connected with a handle of a workpiece 28; an input shaft of the driving gear box 12 is connected with an output shaft of the reduction box 11 through a torque detector 10 (a CYB-806S \ B (0 to +/-10 N.m) S1A1D1J1 type torque detector produced by Weister Zhongguang), and the torque detector 10 is respectively connected with the output shaft of the reduction box 11 and the output shaft of the driving gear box 12 through a coupler; when the device works, the driving motor 8 drives the input shaft of the reduction gearbox 11 to rotate, so that the output shaft of the reduction gearbox 11 drives the torque detector 10 to rotate through the coupler, further the torque detector 10 drives the input shaft of the driving gear box 12 to rotate through the coupler, the rotating handle 14 is driven to rotate by taking the output shaft of the driving gear box 12 as an axis, the mounting rod 13 is driven to rotate by taking the output shaft of the driving gear box 12 as the axis during the rotation process of the rotating handle 14, further the clamping head 9 is driven to rotate by taking the output shaft of the driving gear box 12 as the axis, the driving motor 8 is a servo motor, so as to control the output torque, the rotating number and the rotating speed, further the acting force of the clamping head 9 on a handle of the workpiece 28 can be controlled, and the rotating angle and the rotating speed of the clamping head 9 relative to the output shaft of the driving gear box 12 when the clamping head 9, to prevent the workpiece 28 from rotating too much or too fast a handle angle without damaging the workpiece 28.

An angle detection head is arranged on the rack 1 in front of the clamping fixed table and consists of a supporting seat 15, a pushing block 16, a pushing block electric cylinder 17 and a pressure sensor 18, the top end face of the supporting seat 15 is arranged in an inclined manner, sliding rails are symmetrically arranged on the top end face of the supporting seat 15, the pushing block 16 is movably mounted on the sliding rails and used for limiting the displacement of the pushing block 16, so that the pushing block 16 can only move along the sliding rails and can not deviate relative to the sliding rails in the movement process, and the direction of acting force on a workpiece 28 in the process of pushing the workpiece 28 by the pushing block 16 is ensured to be consistent; the pushing block 16 is U-shaped to prevent the workpiece 28 and the pushing block 16 from sliding relative to each other when the workpiece 28 is pushed by the pushing block 16, and the workpiece 28 and the pushing block 16 are not separated; a pushing block electric cylinder 17 (Lingde LOE50-200-L10-P-T750W-T3-FB type) is arranged on a supporting seat 15 between the sliding rails, a pressure sensor 18 is arranged between the end of a piston rod of the pushing block electric cylinder 17 and the pushing block 16, the pressure sensor 18 is fixedly connected with the end of the piston rod of the pushing block electric cylinder 17 and the pushing block 16 respectively, and then the pushing block electric cylinder 17 can drive the pushing block 16 to move through the pressure sensor 18 (CAS SBA200gf type).

A central shaft detection head is arranged on the rack 1 above the angle detection head, the central shaft detection head is composed of a mounting seat 19, a rotating motor 20, a motor moving electric cylinder 21, a detection clamping jaw 22 and a connecting sleeve 23, the top end face of the mounting seat 19 is arranged in a slope shape, a sliding rail is arranged on the top end face of the mounting seat 19, the rotating motor 20 is movably mounted on the sliding rail, and the rotating motor 20 is a servo motor; a motor moving electric cylinder 21 (Lingde LOE50-200-L10-P-T750W-T3-FB type) is arranged on the mounting seat 19 at one side of the rotating motor 20, a piston rod of the motor moving electric cylinder 21 is fixedly connected with the rotating motor 20, and the motor moving electric cylinder 21 drives the rotating motor 20 to move along a slide rail; a detection clamping jaw 22 is arranged on the other side of the rotating motor 20, a pulling pressure sensor 24 is arranged on the rotating motor 20, a clamping jaw 22 is movably mounted on the pulling pressure sensor 24 through an air cylinder, and the detection clamping jaw 22 is fixedly connected with the rotating motor 20 through the pulling pressure sensor 24; a connecting sleeve 23 is arranged between the detection clamping jaws 22, an output shaft of the rotating motor 20 extends to the position between the detection clamping jaws 22 through a tension pressure sensor 24, a torque sensor 25 is arranged between the end of the output shaft of the rotating motor 20 extending to the position between the detection clamping jaws 22 and the connecting sleeve 23, and the connecting sleeve 23 is fixedly connected with the output shaft of the rotating motor 20 passing through the tension pressure sensor 24 (CAS SBA200 gf) through the torque sensor 25 (CYB-806S \ B (0 to +/-10 N.m) S1A1D1J1 type torque detector produced by Wister Navigator).

A control cabinet 26 (BECKHOFF production, C640 type industrial control computer) is arranged on one side of the rack 1, a display screen 27 is arranged on the rack 1 between the control cabinet 26 and the central shaft detection head, and the display screen 27 is connected with the control cabinet 26; the torque detector 10, the pressure sensor 18, the tension pressure sensor 24 and the torque sensor 25 are respectively electrically connected with the control cabinet 26, the torque detector 10, the pressure sensor 18, the tension pressure sensor 24 and the torque sensor 25 respectively upload signals to the control cabinet 26, and the control cabinet 26 respectively uploads the processed signals to the display screen 27 after processing the signals, and the processed signals are displayed on the display screen 27; the extrusion cylinder 3, the driving motor 8, the pushing electric cylinder 17, the rotating motor 20 and the motor moving electric cylinder 21 are respectively electrically connected with a control cabinet 26, and the extrusion cylinder 3, the driving motor 8, the pushing electric cylinder 17, the rotating motor 20 and the motor moving electric cylinder 21 are respectively controlled by the control cabinet 26.

When the detection device for the automobile steering column operation performance works, a workpiece 28 is placed on a clamping and fixing table of the detection device for the steering column operation performance;

in the process of placing the workpiece 28 on the assembly fixing table, inserting the positioning pin 5 on the assembly fixing table into the positioning hole on the bottom plate of the workpiece 28, and enabling the end of the pressing block 4 to be positioned above the bottom plate of the workpiece 28; after a workpiece 28 is placed on the assembly fixing table, the control cabinet 26 starts the extrusion cylinder 3, so that a piston rod of the extrusion cylinder 3 extends forwards to drive the extrusion block 6 to extrude the pressing block 4, the pressing block 4 presses a bottom plate of the workpiece 28, and the workpiece 28 is clamped and fixed by matching with the positioning pin 5;

after a workpiece 28 is clamped and fixed on a clamping and fixing table, the mounting rod 13 is pushed to move towards one side of the driving motor 8, the clamping block 9 is enabled to move towards one side of the driving motor 8, the clamping block 9 and a handle of the workpiece 28 are enabled to be separated by a certain distance, after the clamping block 9 and the clamping block 9 are enabled to be separated by a certain distance, the handle of the workpiece 28 is pulled, the handle of the workpiece 28 is enabled to be aligned between the clamping blocks 9, the clamping block 9 is pushed to move towards the handle of the workpiece 28, the handle of the workpiece 28 is enabled to be inserted between the clamping blocks 9, and the handle of the workpiece 28 is enabled to be connected;

after a handle of a workpiece 28 is inserted between the clamping blocks 9, the bottom end of a central shaft of the workpiece 28 is fixed through a wrench, and after the bottom end of the central shaft of the workpiece 28 is fixed, a floating adapter 29 is installed at the end head, connected with a steering wheel, of the central shaft of the workpiece 28 through the wrench, so that the detection clamping jaw 22 and the connecting sleeve 23 are respectively connected with the central shaft of the workpiece 28 through the floating adapter 29;

after the floating adapter 29 is installed, the control cabinet 26 controls the driving motor 8 to rotate clockwise, the driving motor 8 drives the input shaft of the reduction box 11 to rotate clockwise in the clockwise rotation process, so that the output shaft of the reduction gearbox 11 rotates clockwise, the torque detector 10 drives the input shaft of the driving gear box 12 to rotate clockwise in the process that the output shaft of the reduction gearbox 11 rotates clockwise, and the output shaft of the driving gear box 12 rotates clockwise, and then drive the rotation handle 14 and rotate clockwise, the rotation handle 14 rotates clockwise in-process, drive the grip block 9 through the installation pole 13 and rotate clockwise, make the grip block 9 drive the work piece 28 handle and use the output shaft of driving gear box 12 as the axle center and rotate clockwise after the speed reduction of reducing gear box 11, the handle rotates clockwise in-process, locks the steering gear tubular column gradually, in the handle locking process, the locking force of the grip block 9 of torque detector 10 pair handle is detected: after the handle is locked, the handle cannot rotate any more, the reaction force of the handle on the clamping block 9 is increased sharply, when the reaction force of the handle on the clamping block 9 is increased sharply, the steering gear is locked by the handle, the force corresponding to the abrupt change point of the reaction force of the handle on the clamping block 9 is the locking force of the handle, the torque detector 10 uploads the change signal of the locking force to the control cabinet 26, and the control cabinet 26 records the curve of the locking force and displays the curve on the display screen 27; when the reaction force of the handle on the clamping block 9 exceeds a set value, the control cabinet 26 controls the driving motor 8 to stop, and the clockwise rotation of the handle is completed; after the handle clockwise turning is accomplished, switch board 26 control driving motor 8 anticlockwise rotation, and drive handle anticlockwise rotation, and open the steering gear tubular column, the handle is opened the in-process, and the opening power of torque detector to the handle detects: after the handle is opened, the reaction force of the handle on the clamping block 9 is sharply reduced, when the reaction force of the handle on the clamping block 9 is sharply reduced, the steering gear is loosened by the handle, the force corresponding to the catastrophe point of the reaction force of the handle on the clamping block 9 is the opening force of the handle, the torque detector 10 uploads the change signal of the opening force to the control cabinet 26, and the control cabinet 26 records the curve of the opening force and displays the curve on the display screen 27; when the locking force and the opening force are displayed on the display screen in the form of a data table and a curve, the control cabinet synchronously displays a standard data table and a standard data curve of the handle locking force and the opening force on the display screen (refer to fig. 15);

after the detection curve of the handle of the workpiece 28 is displayed on the display screen 27, the detection curve of the handle of the workpiece 28 and the standard curves of the locking force and the opening force of the handle are evaluated: when the detection curve of the handle of the workpiece 28 is between the handle locking force and the opening force standard curve, if the opening force is 45N-60N and the handle locking force is less than or equal to 100N, the handle locking force and the opening force of the workpiece 28 are evaluated to be qualified; when the detection curve of the handle of the workpiece 28 partially or totally exceeds the standard curve between the handle locking force and the opening force, such as the locking force is larger than 100N or the opening force is larger than 60N, the handle locking force and the opening force of the workpiece 28 are evaluated as unqualified (refer to FIG. 15);

after the locking force and the opening force of the handle of the workpiece 28 are evaluated, the control cabinet 26 starts the motor to move the electric cylinder 21, so that the motor moves the electric cylinder 21 to drive the rotating motor 20, the detection clamping jaw 22 and the connecting sleeve 23 to move downwards to the distance, set by the control cabinet 26, of the detection clamping jaw 22, and the detection clamping jaw 22 is connected with the upper end of a floating adapter 29 on the central shaft of the workpiece 28; after the detection clamping jaw 22 descends to the right position, the control cabinet 26 controls the detection clamping jaw 22 to act, so that the detection clamping jaw 22 clamps the floating adapter 29;

after the floating adapter 29 is clamped by the detection clamping jaw 22, the control cabinet 26 controls the motor to move the electric cylinder 21 to drive the floating adapter 29 to move upwards to the control cabinet 26 for a set distance sequentially through the rotating motor 20, the pulling pressure sensor 24 and the detection clamping jaw 22, so that the detection clamping jaw 22 drives the central shaft of the workpiece 28 to move upwards along the axial direction through the floating adapter 29, the pulling pressure sensor 24 detects the pulling force between the central shaft of the workpiece 28 and the detection clamping jaw 22 in the process that the central shaft of the workpiece 28 moves upwards along the axial direction, and the resistance of the central shaft of the workpiece 28 during moving upwards is detected; after the motor moves the electric cylinder 21 to drive the central shaft of the workpiece 28 to move upwards to the control cabinet 26 for a set distance, the control cabinet 26 controls the motor to move the electric cylinder 21 to drive the central shaft of the workpiece 28 to move downwards, the central shaft of the workpiece 28 moves downwards along the axial direction, the pull pressure sensor 24 detects the resistance of the central shaft of the workpiece 28 when moving downwards, and the telescopic adjusting force of the central shaft of the workpiece 28 is detected by detecting the resistance of the central shaft of the workpiece 28 when moving upwards and downwards; the pulling pressure sensor 24 uploads a detection signal to the control cabinet 26 in the detection process, the control cabinet 26 processes the signal uploaded by the pulling pressure sensor 24 and then transmits the processed signal to the display screen 27, the processed signal is displayed on the display screen 27 in a data table and curve mode, and meanwhile, the control cabinet 26 synchronously displays a central shaft telescopic adjustment force standard data table and curve on the display screen 27 (refer to fig. 16);

after the detection curve of the central shaft stretching and retracting adjustment force of the workpiece 28 is displayed on the display screen 27, the detection curve of the central shaft stretching and retracting adjustment force of the workpiece 28 and the standard curve of the central shaft stretching and retracting adjustment force are evaluated: when the detection curve of the central shaft telescopic adjusting force of the workpiece 28 is between the central shaft telescopic adjusting force standard curves, if the telescopic adjusting force is less than or equal to 100N (the moving speed is 20 mm/s), the central shaft telescopic adjusting force of the workpiece 28 is evaluated to be qualified; when the part of the detection curve of the central axis stretching and retracting adjusting force of the workpiece 28 exceeds or completely exceeds the central axis stretching and retracting adjusting force standard curve, such as the stretching and retracting adjusting force is more than 100N (the moving speed is 20 mm/s), the central axis stretching and retracting adjusting force of the workpiece 28 is evaluated as unqualified (refer to FIG. 16);

after the central shaft stretching adjusting force of the workpiece 28 is evaluated, the control cabinet 26 controls the driving motor 8 to rotate clockwise to enable the handle to lock the steering gear column so as to prevent the central shaft from shaking; after the steering gear column is locked, the control cabinet 26 controls the detection clamping jaw 22 to reset, and controls the rotating motor 20 to rotate anticlockwise for 1 circle at the rotating speed set by the control cabinet 26, and after the anticlockwise rotation for 1 circle is completed, the control cabinet 26 controls the rotating motor 20 to rotate clockwise for 1 circle at the rotating speed set by the control cabinet 26; in the process that the rotating motor 20 rotates anticlockwise for 1 circle and clockwise for 1 circle, the rotating motor 20 drives the connecting sleeve 23 to rotate through the torque sensor 25, and further the connecting sleeve 23 drives the central shaft of the workpiece 28 to rotate anticlockwise for 1 circle and clockwise for 1 circle through the floating adapter 29; the torque sensor 25 detects the rotation resistance of the central shaft of the workpiece 28 in the process of rotating the central shaft of the workpiece 28 counterclockwise by 1 turn and rotating the central shaft of the workpiece clockwise by 1 turn, namely, detects the no-load moment of the central shaft of the workpiece 28; the torque sensor 25 uploads a detection signal to the control cabinet 26 in the detection process, the control cabinet 26 processes the signal uploaded by the torque sensor 25 and then transmits the processed signal to the display screen 27, the processed signal is displayed on the display screen 27 in a data table and curve mode, and meanwhile, the control cabinet 26 synchronously displays a central shaft no-load moment standard data table and curve on the display screen 27 (refer to fig. 17);

after the detection curve of the no-load moment of the central shaft of the workpiece 28 is displayed on the display screen 27, the detection curve of the rotation of the central shaft of the workpiece 28 and the standard curve of the no-load moment of the central shaft are evaluated: when the detection curve of the no-load moment of the central shaft of the workpiece 28 is between the no-load moment standard curves of the central shaft, if the mean value of the no-load moment is less than or equal to 0.27Nm, the maximum value is less than or equal to 0.4Nm and the peak-valley difference is less than or equal to 0.14Nm, the no-load moment of the central shaft of the workpiece 28 is evaluated to be; when the part of the detection curve of the no-load moment of the central shaft of the workpiece 28 exceeds or completely exceeds the part between the standard curves of the no-load moment of the central shaft, if the maximum value of the no-load moment is more than 0.4Nm, the no-load moment of the central shaft of the workpiece 28 is evaluated to be unqualified (refer to FIG. 17);

after the no-load moment of the central shaft of the workpiece 28 is evaluated, the control cabinet 26 controls the driving motor 8 to rotate anticlockwise so that the handle loosens the tube column of the steering gear; after the tube column of the steering gear is loosened, the control cabinet 26 controls the motor to move the electric cylinder 21 to reset, so that the floating adapter 29 on the workpiece 28 is separated from the connecting sleeve 23; after the floating adapter 29 is separated from the connecting sleeve 23, the control cabinet 26 controls the electric cylinder 17 of the pushing block to drive the pushing block 16 to move upwards through the pressure sensor 18, so that the central shaft of the workpiece 28 is gradually inserted between the pushing blocks 16, the central shaft of the workpiece 28 is gradually inserted into the pushing block 16, then the pushing block 16 continues to move upwards, the pushing block 16 pushes the central shaft of the workpiece 28 to drive the pipe column to rotate relative to the bottom plate, and the pressure sensor 18 detects the rotation resistance of the pipe column of the workpiece 28 in the process that the pipe column of the workpiece 28 rotates relative to the bottom plate; the pressure sensor 18 uploads a detection signal to the control cabinet 26 in the detection process, when the control cabinet 26 detects that the rotation resistance of the pipe column is increased rapidly through the pressure sensor 18, the pipe column cannot rotate relative to the bottom plate, in the process, the pushing block electric cylinder 17 uploads stroke data to the control cabinet 26, the control cabinet 26 calculates the rotation angle of the pipe column relative to the bottom plate through the stroke of the pushing block electric cylinder 17, and the rotation angle of the pipe column is detected, namely the adjustable angle of the pipe column is detected; when the rotation resistance of the pipe column exceeds a set value, the control cabinet 26 controls the electric cylinder 17 of the push block to gradually reset, so that the push block 16 resets; in the process of resetting the pushing block 16, the pipe column resets under the elastic force action of a resetting spring of the workpiece 28; after the pressure sensor 18 and the electric cylinder 17 of the pushing block upload data to the control cabinet 26, the control cabinet 26 processes the data, displays the pipe column rotation angle and the rotation resistance curve on the display screen 27, and synchronously displays the standard curve of the pipe column rotation angle and the rotation resistance (refer to fig. 18);

after the detection curves of the pipe column rotation resistance and the rotation angle of the workpiece 28 are displayed on the display screen 27, the detection curves of the pipe column rotation resistance and the rotation angle of the workpiece 28 and the standard curves of the pipe column rotation resistance and the rotation angle are evaluated: when the detection curve of the pipe column rotation resistance and the rotation angle of the workpiece 28 is between the pipe column rotation resistance and the rotation angle standard curve, if the pipe column rotation resistance is less than or equal to 100N (the rotation speed is 30 mm/s), the pipe column rotation resistance and the rotation angle of the workpiece 28 are evaluated to be qualified; when the parts of the detection curves of the workpiece 28 pipe column rotation resistance and the rotation angle exceed or completely exceed the parts between the pipe column rotation resistance and the rotation angle standard curve, such as the pipe column rotation resistance is more than 100N (the rotation speed is 30 mm/s), the workpiece 28 pipe column rotation resistance and the rotation angle are evaluated as unqualified (refer to FIG. 18);

after the pipe column is reset, the control cabinet 26 controls the driving motor 8 to rotate clockwise, and drives the handle to rotate clockwise to lock the pipe column, so that the pipe column can not rotate relative to the bottom plate; after the pipe column is locked, the control cabinet 26 starts the electric cylinder 17 of the pushing block, so that the electric cylinder 17 drives the pushing block 16 to move upwards, in the process of moving upwards the pushing block 16, the pushing block 16 applies an upward force to the pipe column of the workpiece 28, in the process, the pressure sensor 18 detects the reaction force of the central shaft to the pushing block 16, namely, the holding force of the handle to the pipe column; the electric cylinder 17 of the push block uploads the stroke data to the control cabinet 26, the control cabinet 26 calculates the clearance between the central shaft and the pipe column through the stroke of the push block 16, namely, the clearance between the central shaft and the pipe column is detected, meanwhile, the displacement of the pipe column relative to the handle is detected, the control cabinet 26 processes the data and displays the curve of the handle holding force and the clearance between the central shaft and the pipe column on the display screen 27, and simultaneously synchronously displays the standard curve of the holding force and the clearance (refer to fig. 19 and 20);

after the detection curves of the handle holding force of the workpiece 28 and the clearance between the central shaft and the pipe column are displayed on the display screen 27, the detection curve of the handle holding force of the workpiece 28 and the standard curve of the handle holding force are evaluated, and the detection curve of the clearance between the central shaft and the pipe column and the standard curve of the clearance between the central shaft and the pipe column are evaluated: when the detection curve of the handle holding force of the workpiece 28 is between the standard curves of the handle holding force, if the holding force 490N and the displacement is less than 4.5mm, the handle holding force of the workpiece 28 is evaluated to be qualified; when the portion of the detection curve of the handle holding force of the workpiece 28 exceeds or entirely exceeds the standard curve of the handle holding force, such as holding force < 490 and displacement > 4.5mm, the handle holding force of the workpiece 28 is evaluated as unqualified (refer to fig. 19); when the detection curve of the clearance between the central shaft of the workpiece 28 and the pipe column is between the standard curves of the clearances between the central shaft and the pipe column, if the thrust is 50N, the clearance is less than 1mm, the thrust is 90N, and the clearance is less than 2.5mm, the clearance between the central shaft of the workpiece 28 and the pipe column is evaluated to be qualified; when the detection curve of the clearance between the central axis of the workpiece 28 and the pipe column partially or completely exceeds the standard curve of the clearance between the central axis and the pipe column, such as 50N thrust, clearance > 1mm, 90N thrust, and clearance > 2.5mm, the clearance between the central axis of the workpiece 28 and the pipe column is evaluated as unqualified (refer to FIG. 20);

after the handle holding force of the workpiece 28 and the gap between the central shaft and the pipe column are detected, the control cabinet 26 enables the pushing block electric cylinder 17 to reset, the control cabinet 26 controls the extrusion cylinder 3 to reset after the pushing block electric cylinder 17 resets, the workpiece 28 bottom plate is loosened by the pressing block 4, and the workpiece 28 is taken down from the clamping fixing table after the pressing block 4 is loosened.

The detection device for the operating performance of the automobile steering column can conveniently clamp and fix a workpiece through the clamping and fixing table in the detection process, can detect the handle opening force and the locking force of the workpiece through the handle detection head, can detect the rotation angle and the rotation resistance of the workpiece column and the holding force of the handle through the angle detection head, can detect the telescopic adjusting force and the no-load moment of the central shaft of the workpiece through the central shaft detection head, can display all detection parameters on a display screen, and can visually observe and compare the handle opening force and the locking force of the workpiece, the rotation angle and the rotation resistance of the column, the telescopic adjusting force and the no-load moment of the central shaft, further can parametrically and accurately detect the operating performance of the workpiece, namely detect the quality of the workpiece; the problems that an existing detection device is inaccurate in detection result, large in labor intensity and low in working efficiency, and cannot parameterize a detection process are solved, and the device is particularly suitable for detecting the operation performance of a steering column.

Claims (7)

1. The utility model provides a detection apparatus for be used for car steering column operating performance, it detects head, center pin by frame (1), clamping fixed station, angle and detects the head and the handle detects the head constitutes its characterized in that: a clamping fixed table is arranged on the machine frame, and a handle detection head is arranged on the machine frame (1) on one side of the clamping fixed table; an angle detection head is arranged on the frame (1) in front of the clamping fixing table, and a central shaft detection head is arranged on the frame (1) above the angle detection head; a control cabinet (26) is arranged on one side of the rack, a display screen (27) is arranged on the rack (1) between the control cabinet (26) and the center shaft detection head, and the display screen (27), the clamping fixing table, the angle detection head, the center shaft detection head and the handle detection head are respectively connected with the control cabinet (26).

2. The apparatus for detecting the steering column operability of the automobile according to claim 1, wherein: the clamping fixing table is composed of a clamping fixing plate (2), an extrusion cylinder (3), a pressing block (4) and a positioning pin (5), the section of the clamping fixing plate (2) is triangular, the extrusion cylinder (3) is symmetrically and fixedly arranged on the front end face of the clamping fixing plate (2) through a mounting seat, and the extrusion cylinder (3) is connected with a control cabinet (26); an extrusion block (6) is fixedly arranged at the end of a piston rod of each extrusion cylinder (3), a pressing block (4) is movably arranged on the clamping fixing plate (2) above the inner side of each extrusion block (6) through a fixing seat and a pin shaft, and a plurality of positioning pins (5) are arranged on the clamping fixing plate (2) between the extrusion cylinders (3).

3. A detecting device for an operation performance of a steering column of an automobile according to claim 2, characterized in that: the extrusion block (6) is a conical body, the extrusion block (6) is in sliding contact connection with the end of the compression block (4) so as to force the compression block (4) to rotate around the pin shaft and control the extrusion force applied to the compression block (4) by the extrusion block (6).

4. The apparatus for detecting the steering column operability of the automobile according to claim 1, wherein: the handle detection head consists of an assembly seat (7), a driving motor (8), a clamping block and a torque detector (10), wherein the driving motor (8) is installed at one end of the assembly seat (7) through a reduction gearbox (11), and a driving gear box (12) is installed at the other end of the assembly seat (7); an input shaft of the driving gear box (12) is connected with an output shaft of the reduction gearbox (11) through a torque detector (10), and a clamping block is arranged on the output shaft of the driving gear box (12) through a rotating handle (14); the driving motor (8) and the torque detector (10) are respectively connected with the control cabinet (26).

5. The apparatus for detecting the steering column operability of the automobile according to claim 4, wherein: the clamping block comprises an installation rod (13) and a clamping head (9), the clamping head (9) is U-shaped, the installation rod (13) is arranged on the clamping head (9), and the installation rod (13) is movably inserted into and connected with a rotating handle (14) so that the clamping head (9) is connected with a handle of a workpiece (28).

6. The apparatus for detecting the steering column operability of the automobile according to claim 1, wherein: the angle detection head is composed of a supporting seat (15), a pushing block (16), an electric pushing block cylinder (17) and a pressure sensor (18), and the pushing block (16) is mounted on the end face of the top of the supporting seat (15) through symmetrically arranged sliding rails so as to ensure the stability of the pushing block during movement; a pushing block electric cylinder (17) is arranged on a supporting seat (15) between the sliding rails, and a piston rod of the pushing block electric cylinder (17) is fixedly connected with a pushing block (16) through a pressure sensor (18); the electric cylinder (17) of the pushing block and the pressure sensor (18) are respectively connected with a control cabinet (26).

7. The apparatus for detecting the steering column operability of the automobile according to claim 1, wherein: the central shaft detection head is composed of a mounting seat (19), a rotating motor (20), a motor moving electric cylinder (21), a detection clamping jaw (22) and a connecting sleeve (23), the rotating motor (20) is movably mounted on the end face of the top of the mounting seat (19) through a sliding rail, the motor moving electric cylinder (21) is arranged on the mounting seat (19) on one side of the rotating motor (20), and a piston rod of the motor moving electric cylinder (21) is fixedly connected with the rotating motor (20); a detection clamping jaw (22) is arranged on the other side of the rotating motor (20), and the detection clamping jaw (22) is fixedly connected with the rotating motor (20) through a tension and pressure sensor (24); a connecting sleeve (23) is arranged between the detection clamping jaws (22), and the connecting sleeve (23) is fixedly connected with an output shaft of a rotating motor (20) penetrating through a tension and pressure sensor (24) through a torque sensor (25); the rotating motor (20), the motor moving electric cylinder (21), the tension and pressure sensor (24) and the torque sensor (25) are respectively connected with the control cabinet (26).

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