CN107966231B - Automatic arm moment performance adjusting automatic detection table - Google Patents
Automatic arm moment performance adjusting automatic detection table Download PDFInfo
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- CN107966231B CN107966231B CN201711160725.7A CN201711160725A CN107966231B CN 107966231 B CN107966231 B CN 107966231B CN 201711160725 A CN201711160725 A CN 201711160725A CN 107966231 B CN107966231 B CN 107966231B
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- 239000003638 chemical reducing agent Substances 0.000 claims description 20
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/28—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for testing brakes
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Abstract
The invention provides an automatic detection table for the moment performance of an automatic adjusting arm, which comprises a product clamping mechanism, a moment detection mechanism, a detection sliding table and a computer control unit, wherein the moment detection mechanism can slide on the detection sliding table, the moment detection mechanism comprises a sleeve for being connected with a hexagonal head of the automatic adjusting arm, the moment detection mechanism comprises a universal floating adjusting mechanism and an independent front-back free sliding device, the sleeve can slide on the independent front-back free sliding device, and the sleeve is connected with the universal floating adjusting mechanism; the torque detection mechanism further comprises a servo motor A, and the servo motor A is used for driving the sleeve and the universal floating adjustment structure to rotate; a compression spring B is arranged in the sleeve; and/or the universal floating adjusting mechanism comprises a cylindrical hole aligning ball bearing B which is vertically connected with the main body structure of the universal floating adjusting mechanism. The hexagonal heads of the automatic adjusting arm worms with different specifications and types are smoothly and automatically aligned with the detection sleeve to be sleeved and/or the moment is perpendicular to the sleeve.
Description
Technical Field
The invention belongs to the field of vehicle testing, and particularly relates to an automatic detection table for automatically adjusting arm moment performance.
Background
The automatic clearance adjusting arm is an accessory of a braking part on a vehicle and is used for adjusting the clearance between a brake pad and a brake drum to keep a constant value so as to ensure reliable braking and safe running of the vehicle. Before the automatic clearance adjusting arm leaves the factory, the separation clearance, the separation force and the moment are detected, and the separation force is adjusted. The traditional automatic clearance adjustment arm manufacturer adopts a manual mode to carry out the detection and adjustment, the parameters are fuzzy, the detection precision is difficult to achieve, and the detection is complex and can be completed only by repeated times.
Chinese patent application publication No. CN101216374a discloses a device for detecting the separation gap, separation force and moment of an automatic gap adjustment arm and adjusting the separation force, which has an automatic gap adjustment arm clamping mechanism and a stroke sensor on a work table. An electric numerical control screw driver is arranged on the left side of the workpiece table, can axially move under the drive of an electric numerical control screw driver displacement cylinder, and is controlled to rotate by a numerical control device according to a signal from a force sensor. The force sensor is arranged on a thrust cylinder on the right side of the workpiece table, and the other end of the push rod is provided with a rotary compression cylinder.
The device in the prior art can not automatically align and sleeve the hexagonal heads of the adjusting arm worm with the detection sleeves for different specifications and types, and/or the output moment of the hexagonal heads of the adjusting arm is not perpendicular to the detection sleeves, so that the detection moment is not truly detected.
Disclosure of Invention
In order to solve the technical problem that the hexagonal heads of the worms of the adjusting arms with different specifications and types cannot be automatically aligned and sleeved with the detection sleeve in the prior art, the invention provides the automatic detection table for the moment performance of the automatic adjusting arm.
In order to achieve the above purpose, the invention adopts the following technical scheme: the automatic detection table for the moment performance of the automatic adjusting arm comprises a product clamping mechanism, a moment detection mechanism, a detection sliding table and a computer control unit, wherein the moment detection mechanism can slide on the detection sliding table, the moment detection mechanism comprises a sleeve and is used for being connected with a hexagonal head of the automatic adjusting arm, the moment detection mechanism comprises a universal floating adjusting mechanism and an independent front-back free sliding device, the sleeve can slide on the independent front-back free sliding device, and the sleeve is connected with the universal floating adjusting mechanism; the torque detection mechanism further comprises a servo motor A, and the servo motor A is used for driving the sleeve and the universal floating adjustment structure to rotate; a compression spring B is arranged in the sleeve, so that the sleeve and the hexagonal head of the automatic adjusting arm are automatically aligned and sleeved; and/or
The universal floating adjusting mechanism comprises a cylindrical hole aligning ball bearing B which is vertically connected with the main body structure of the universal floating adjusting mechanism, so that output torque is ensured to be vertical to the sleeve, and the reliability of a torque detection result is ensured.
Preferably, the universal floating adjusting mechanism comprises a cross universal joint coupler, a universal joint mounting seat, a conversion shaft A, a conversion shaft B and a cylindrical hole aligning ball bearing B; one end of the conversion shaft A is fixedly connected with the sleeve; the other end of the conversion shaft A is connected with the cross universal joint coupler; the cylindrical hole aligning ball bearing B is arranged in the cross universal joint coupler in the direction perpendicular to the conversion shaft, and a universal joint sheath is arranged on the cylindrical hole aligning ball bearing B; the universal joint sheath is firmly fixed with the universal joint mounting seat, the universal joint mounting seat is mounted on the moving plate, and a pair of double-joint angular contact ball bearings A and the conversion shaft B are mounted in the middle of the universal joint mounting seat; the other end of the cross universal joint coupler, which is parallel to the conversion shaft, is connected with one end of the conversion shaft B.
In any of the above schemes, it is preferable that bearing end caps B are mounted at both ends of the paired double angular contact ball bearings a.
Either of the above solutions is preferred to fix the axial movement of the conversion shaft B with a collar a, so that the conversion shaft B is subjected to both axial and radial loads, eliminating mechanical loads.
In any of the above schemes, preferably, the torque detection mechanism comprises an automatic adjusting arm hexagonal head access mechanism, the outward floating adjustment mechanism, a quincuncial coupling A, a torque rotation speed sensor, a quincuncial coupling B, a speed reducer and a servo motor A which are connected in sequence; the sleeve mounting seat, the universal joint mounting seat, the torque and rotation speed sensor mounting seat and the speed reducer mounting seat are mounted on the moving plate.
Preferably, in any of the above solutions, the independent front-rear free sliding device includes a single-lining linear bearing, a guide plate, a compression spring a and a precision shaft a; the single lining type linear bearing is arranged in the guide plate and fixed on the moving plate together, the fine shaft A and the compression spring A are sleeved in the middle of the single lining type linear bearing, and the single lining type linear bearing and the compression spring A are pressed and fixed in the adjusting plate together through the fine shaft A.
In any of the above aspects, preferably, holes are formed at both ends of the adjusting plate, and the fine shaft is pressed into the holes.
In any of the above aspects, preferably, the structure of the automatic adjusting arm hexagonal head access mechanism is as follows: the movable plate is provided with a dovetail groove, the dovetail groove is internally provided with the regulating plate, the regulating plate is internally provided with a cylindrical hole aligning ball bearing A, two ends of the cylindrical hole aligning ball bearing A are provided with bearing end covers A, the sleeve is arranged in the cylindrical hole aligning ball bearing A in a sliding manner, the sleeve is internally provided with a compression spring B, and the sleeve is sleeved on the conversion shaft A.
In any of the above schemes, preferably, the detection sliding table includes a proximity switch, and is used for sensing the determination of the joint position of the hexagonal head and the sleeve, and when the proximity switch senses the indication lamp to be on, the detection sliding table stops moving forward and enters a self-locking state.
In any of the above embodiments, the proximity switch is preferably mounted on the sensor, and the sensor is fixed on the slide mount a. Under the control of the proximity switch, the sliding table can be adjusted to stop moving forward.
In any of the above aspects, preferably, the detection sliding table has a structure as follows: a base plate, a sliding table mounting seat A and a sliding table mounting seat B are combined into a sliding table main body; the ball screw provided with the ball screw nut mounting seat, the deep groove ball bearing and the paired double-joint angular contact ball bearings B are arranged in the sliding table mounting seat A and the sliding table mounting seat B together, the bearing end covers C and the shaft rings B are arranged at the two ends of the paired double-joint angular contact ball bearings B, and the ball screw is adjusted and fixed by nuts, so that the ball screw shafts can bear larger loads in the left-right direction and not axially displace; the servo motor B, the speed reducer B and the speed reducer mounting seat are connected in series on the slipway mounting seat B for fixing, one end of the quincuncial coupling B for the middle is connected with the output shaft of the speed reducer B, and the other end is connected with the ball screw, so that a complete transmission power device is formed; the linear bearing box type unit is sleeved into the fine shaft B, and the fine shaft B is fixed at two ends of the sliding table mounting seat A and the sliding table mounting seat B; the sensor mounting plate with the proximity switch is fixed on the sliding table mounting seat A to form a complete detection sliding table, so that the rotating motion of the servo motor drives the ball screw nut mounting seat to do direct translational motion through the ball screw, and the sliding table can be adjusted and stopped in advance under the control of the proximity switch.
In any of the above aspects, preferably, the moving plate of the torque detection mechanism is assembled with a ball screw nut mount on the detection slide table and four linear bearing box units. And under the drive of the detection sliding table, the moment detection mechanism moves forwards and backwards at a constant speed.
In any of the above schemes, preferably, the product clamping mechanism comprises a compression power source assembled by a cylinder supporting seat, a thin cylinder, a cylinder connecting seat and a product positioning seat which are sequentially arranged from bottom to top.
The product clamping mechanism further comprises an adjusting positioning seat and an adjusting plate which are connected with the cylinder connecting seat in sequence, and the adjusting arms with different specifications are adjusted, positioned and supported.
The product clamping mechanism further comprises a hinge pressing plate combination and a pull rod which are movably connected, the hinge pressing plate combination and the pull rod are mounted on the thin type air cylinder piston rod together, and the hinge pressing plate combination is driven by the thin type air cylinder piston rod to enable the tested adjusting arm product to be fast pressed and loosened.
Preferably, in any of the above schemes, the computer control unit integrates a data digital acquisition subunit for acquiring the torque rotation speed sensor signal.
Preferably, in any of the above schemes, the computer control unit further comprises a servo motor control subunit, for controlling the output pulse signal to control the operation of the servo motor.
Preferably, any of the above aspects, the computer control unit further comprises a data processing subunit.
Preferably, in any of the above schemes, the data processing subunit can automatically generate a moment curve, automatically read the highest and lowest peaks, and compare the moment curve with a set standard curve.
Preferably, in any of the above aspects, the automatic inspection station further comprises a pass status indicating device. And prompting passing or failing (buzzing) according to the comparison result with the set standard curve.
According to the automatic detection table for the moment performance of the automatic adjusting arm, the moment detection mechanism is used for moving forwards leftwards on the detection sliding table, so that the sleeve moves forwards to be in contact with the hexagonal head of the automatic adjusting arm, the hexagonal head generates rightward acting force on the compression spring B, the compression spring B also generates leftward reacting force on the hexagonal head, meanwhile, the servo motor A starts to rotate clockwise for one circle, under the cooperation of the driving of the servo motor A, the universal floating adjustment mechanism and the independent front-rear free sliding device, when the sleeve rotates to a proper position, the sleeve is instantly aligned and sleeved with the hexagonal head under the reacting force of the compression spring B, the automatic alignment and the sleeving of the sleeve and the hexagonal head are realized, then the servo motor A of the moment detection mechanism is switched to rotate anticlockwise for one circle, and under the action of the servo motor, the sleeve drives the hexagonal head to rotate to generate torque, and the torque is detected through the torque rotation speed sensor; meanwhile, the output torque is perpendicular to the sleeve due to the arrangement of the cylindrical hole aligning ball bearing B in the universal floating adjusting structure; the automatic alignment sleeving of the sleeve and the hexagonal head is realized, the output moment of the hexagonal head of the arm worm is vertical to the detection sleeve, the detection moment is high in efficiency, real and reliable, and the working intensity is reduced; the device has compact mechanical structure, reasonable design and high technical content of the whole machine; the installation, the debugging and the maintenance are convenient. Meanwhile, by combining an industrial computer, automatic detection is realized, and efficiency is improved.
The automatic detection table improves the detection technical means, reduces the torque transfer loss, improves the product quality detection degree, reduces the labor intensity, simplifies the operation steps, realizes the automatic detection of an online finished product terminal, improves the production efficiency, improves the stability and consistency of the delivery performance of the product, breaks through the traditional operation method, and is suitable for the automatic arm torque adjustment performance terminal detection (delivery detection) of an automobile in the automobile manufacturing industry.
Drawings
Fig. 1 is a schematic view showing the construction of a preferred embodiment of an automatic arm moment performance adjustment detection stage according to the present invention.
Fig. 2 is a front view of a product clamping mechanism of the automated inspection station of fig. 1.
Fig. 3 is a left side view of the product clamp mechanism of fig. 2.
Fig. 4 is a top view of the product clamp mechanism of fig. 2.
Fig. 5 is a front view of the torque detection mechanism of the automated inspection station of fig. 1.
Fig. 6 is a top view of the torque detection mechanism shown in fig. 5.
Fig. 7 is a front view of a detection slide of the automatic detection table of fig. 1.
Fig. 8 is a top view of the inspection slip shown in fig. 7.
Fig. 9 is a front view of the automated inspection station shown in fig. 1.
Fig. 10 is a left side view of the automated inspection station of fig. 1.
Fig. 11 is a partial enlarged view of the moment detection mechanism shown in fig. 5.
Fig. 12 is a partial enlarged view of the moment detecting mechanism shown in fig. 6.
Wherein, the meanings of each reference numeral are as follows:
101. the product clamping mechanism; 102. a torque detection mechanism; 103. detecting a sliding table;
1. a cylinder support base; 2. a thin cylinder; 3. a cylinder connecting seat; 4. adjusting the positioning seat; 5. a product positioning seat; 6. a pull rod; 7. a hinged pressing plate combination; 8. an adjusting plate; 9. compressing the spring A; 10. a guide plate; 11. a single-lining linear bearing; 12. a precision axis A; 13. a dovetail groove; 14. an adjusting plate; 15. a cylindrical hole aligning ball bearing A; 16. a compression spring B; 17. a sleeve; 18. a bearing end cover A; 19. a moving plate; 20. a switching shaft A; 21. a cross universal joint coupling; 22. a cylindrical hole aligning ball bearing B; 23. a gimbal boot; 24. a bearing end cover B; 25. a universal joint mounting seat; 26. paired double-linked angular contact ball bearings A; 27. a collar A; 28. a switching shaft B; 29. plum blossom type coupling A; 30. a torque rotation speed sensor; 31. a speed reducer mounting seat; 32. a speed reducer A; 33. a servo motor A; 34. a bottom plate; 35. a slipway mounting seat A; 36. deep groove ball bearings; 37. a ball screw; 38. a sensor mounting plate; 39. a proximity switch; 40. a ball screw nut mounting seat; 41. a precision axis B; 42. a linear bearing box unit; 43. a slipway mounting seat B; 44. paired double-linked angular contact ball bearings B; 45. a bearing end cover C; 46. a collar B; 47. a hexagonal thin nut; 48. quincuncial coupling B; 49. a speed reducer mounting seat; 50. a speed reducer B; 51. a servo motor B;
61. a working air pressure display; 62. a gas pressure regulator; 63. starting the button A; 64. an emergency stop button; 65. a start button B; 66. the cylinder clamps the air pipe perforation; 67. air pressure relaxing tracheal perforation; 68. a data signal line hole; 69. an operating voltage display; 70. a pass indicator; 71. a failure indicator (beep); 72. a liquid crystal display; 73. an industrial personal computer; 74. drawer (mouse); 75. and a power switch.
Detailed Description
For a clearer understanding of the present invention, the present invention will be further explained below with reference to specific examples and drawings.
The automatic arm moment performance adjusting and detecting table is shown in fig. 1, and consists of a product clamping mechanism 101 shown in fig. 2-4, a moment detecting mechanism 102 shown in fig. 5-6, a detecting sliding table 103 shown in fig. 7-8 and a computer control unit.
The structure of the product clamping mechanism 101 is as follows: as shown in fig. 2 to 4, a compressing power source is assembled by a cylinder supporting seat 1, a thin cylinder 2, a cylinder connecting seat 3 and a product positioning seat 5 which are sequentially arranged from bottom to top, and an adjusting positioning seat 4 and an adjusting plate 8 are sequentially connected with the cylinder connecting seat 3, so that the adjusting, positioning and supporting functions of automatic adjusting arms with different specifications are realized; the hinge pressing plate combination 7 is movably connected with the pull rod 6 and is installed on the piston rod of the thin air cylinder 2, and the hinge pressing plate combination 7 is driven by the piston rod of the thin air cylinder 2 to quickly press and loosen the tested automatic adjusting arm product, so that a complete product clamping mechanism is formed.
The torque detection mechanism 102 has a structure of: as shown in fig. 5 and 6, the moving plate 19 is used as a main body, a force moment detection power source is formed by combining a servo motor a 33, a speed reducer a 32 and a speed reducer mounting seat 31, and the force moment detection power source is mounted on the moving plate 19; the torque and rotation speed sensor 30 is connected with the plum blossom-shaped coupling A29 at two ends, the torque and rotation speed sensor 30 is arranged on the moving plate 19, one end of the plum blossom-shaped coupling 29 is connected with the speed reducer A32, and the other end is connected with the conversion shaft B28; the universal joint mounting seat 25 is mounted on the moving plate 19, a pair of double-joint angular contact ball bearings A26 and a conversion shaft B28 are mounted in the middle of the universal joint mounting seat 25, bearing end covers B24 are mounted at two ends of the pair of double-joint angular contact ball bearings A26, and the conversion shaft B28 is fixed to move axially by a collar A27, so that the conversion shaft B28 is subjected to axial and radial loads at the same time, and mechanical loads are eliminated; the cross universal joint coupler 21 is connected with one end of a conversion shaft B28, a cylindrical hole aligning ball bearing B22 provided with a universal joint sheath 23 is arranged in the cross universal joint coupler 21 along with the direction perpendicular to the conversion shaft A, the cylindrical hole aligning ball bearing B22 is firmly fixed with a universal joint mounting seat 25, and the conversion shaft A20 is connected with the cross universal joint coupler 21 to form a universal floating adjusting mechanism; the enlarged views of the automatic adjusting arm engaging mechanism are shown in fig. 11 and 12, a dovetail groove 13 is arranged on a moving plate 19, an adjusting plate 14 is in sliding fit with the dovetail groove 13, a cylindrical hole aligning ball bearing A15 is arranged in the adjusting plate 14, bearing end covers A18 are assembled at two ends of the cylindrical hole aligning ball bearing A15, a sleeve 17 is assembled in the cylindrical hole aligning ball bearing A15 in a sliding fit manner, a compression spring B16 is assembled in the sleeve 17, and the sleeve 17 is assembled in a conversion shaft A20; the single lining type linear bearing 11 is arranged in the guide plate 10 and is fixed on the moving plate 19 together, the middle part of the single lining type linear bearing is sleeved with the fine shaft A12 (phi 12) and the compression spring A9, and the single lining type linear bearing is fixed in holes at two ends of the adjusting plate 14 through the fine shaft A12 in a pressing mode, so that an independent front-back free sliding device is formed.
The detection sliding table 103 has the structure that: as shown in fig. 7 and 8, a base plate 34, a slide mount a 35, and a slide mount B43 are combined into a slide main body; the ball screw 37 provided with the ball screw nut mounting seat 40, the deep groove ball bearing 36 and the paired double-joint angular contact ball bearings B44 are put into the sliding table mounting seat A35 and the sliding table mounting seat B43 together, the two ends of the paired double-joint angular contact ball bearings B44 are provided with the bearing end covers C45 and the shaft collars B46, and the ball screw 37 is adjusted and fixed by the hexagonal thin nuts 47, so that the ball screw 37 can bear larger load in the left-right direction and cannot axially displace; the servo motor B51, the speed reducer B50 and the speed reducer 49 are connected in series and fixed on the slipway mounting seat B43, one end of the quincuncial coupling B48 is connected with the output shaft of the speed reducer B50, and the other end is connected with the ball screw 37, so that a complete transmission power device is formed; the linear bearing box type unit 42 is sleeved into the fine shaft B41 (phi 25), and the fine shaft B41 is fixed at two ends of the sliding table mounting seat A35 and the sliding table mounting seat B43; the sensor 38 mounting plate provided with the proximity switch 39 is fixed on the slipway mounting seat A35 to form a complete detection slipway, so that the rotary motion of the servo motor 51 drives the ball screw nut mounting seat 40 to directly translate through the ball screw 37, and the forward displacement of the slipway can be regulated and stopped under the control of the proximity switch 39.
The detection sliding table 103 shown in fig. 7 and 8 is taken as a main body, the moving plate 19 of the moment detection mechanism 102 shown in fig. 5 and 6 is assembled with the ball screw nut mounting seat 40 and the four linear bearing box units 42 on the detection sliding table 103 shown in fig. 7 and 8, and the moment detection mechanism 102 shown in fig. 5 and 6 is driven by the detection sliding table 103 shown in fig. 7 and 8 to advance and retreat at a uniform speed; then the product of the automatic adjusting arm is arranged on the product positioning seat 5 of the product clamping mechanism 101 shown in fig. 2-4, the whole product clamping mechanism 101 is adjusted, the axial center of the hexagonal head of the worm of the automatic adjusting arm is aligned with the axial center of the sleeve 17 of the torque detecting mechanism 102 shown in fig. 5-6, and then the automatic adjusting arm is fixedly arranged on the bottom plate 34 of the detecting sliding table 103 shown in fig. 7-8; the automatic detection of the moment performance of the automobile adjusting arm assembly of various types is realized by being matched with a computer control unit to form a whole machine.
The automatic detection platform adopts an industrial computer, integrates a data digital acquisition card and a servo motor control card, acquires torque sensor signals by using a data acquisition card analog port through software, controls a peripheral relay, an electromagnetic valve and the like through a digital input/output port, and operates the servo motor control card to output pulse signals to control the servo motor to operate. All the function detection is automatically completed by pressing one key, the operation is simple, the measurement data is directly displayed by a computer, and the product is judged to be unqualified (with beep) and qualified by red and green indicator lamps directly through the qualified indicator 70 and the unqualified indicator 71.
The automatic detection platform also comprises a working air pressure display 61, an air pressure regulator 62, an emergency stop button 64 for an emergency stop device, an air cylinder clamping air pipe perforation 66, an air cylinder loosening air pipe perforation 67, a data signal wire hole 68, a drawer 74 for placing a mouse and an industrial personal computer 73; the data signal first hole 68 is connected with a sensor and the like and the industrial personal computer 73, and the cylinder clamping air pipe perforation 66 and the cylinder loosening air pipe perforation 67 are connected with electromagnetic valves of the cylinder and the servo motor.
The operation principle steps of the whole machine are as follows:
1) Debugging before detection: loading the automobile adjusting arm product to be detected on a product positioning seat 5 in a product clamping mechanism 101 shown in fig. 2-4, adjusting the adjusting positioning seat 4 in the product clamping mechanism 101 shown in fig. 2-4 left and right to enable the axial center of a hexagonal head of an automatic adjusting arm worm to be detected to be basically aligned with the axial center of a sleeve 17 of a moment detecting mechanism 102 shown in fig. 5-6, and then adjusting the free state of the product contacted with the automatic adjusting arm by an adjusting plate 8 in the product clamping mechanism 101 shown in fig. 2-4 up and down to be basically horizontal and slightly lower than the product; the method comprises the steps of turning on a power supply of a computer control unit and starting a computer detection main program, entering an automatic detection table debugging program, clicking a movement button of a detection sliding table 103 to adjust the forward and backward rotation of a servo motor B51 in the detection sliding table 103 shown in fig. 7 and 8, driving a ball screw 37 to drive a moment detection mechanism 102 shown in fig. 5 and 6 to move forwards and backwards, clicking the movement button of the detection sliding table 103 to adjust the gap between the end face of a sleeve 17 and the end face by 5-10 mm according to different adjusting arms of different specifications and types, at the moment, adjusting a proximity switch 39 in the detection sliding table 103 shown in fig. 7 and 8 to be in an induction mode (the proximity switch 39 indicates that a lamp is on), clicking the storage and closing in the automatic detection table debugging program, entering a main test program and enabling the debugging to finish a mode to be detected, and enabling the working flow to be controlled by industrial computer software programming.
2) Moment detection of an automatic adjusting arm assembly: an automobile adjusting arm product is illustrated as the following operation steps: the adjusting arm to be detected is arranged on a product positioning seat 5 in a product clamping mechanism 101 shown in fig. 2-4, one end of the product is contacted with the adjusting positioning seat 4 by clockwise swinging, the hinge pressing plate 7 is manually moved to rotate from vertical to horizontal (90 degrees), two starting buttons 63 and 65 connected with a computer control unit on an automatic detection table board shown in fig. 9 are pressed by two hands, a thin air cylinder 2 in the product clamping mechanism 101 shown in fig. 2-4 drives the hinge pressing plate 7 to be pressed down to a product to be detected, and at the moment, the product enters an automatic joint detection mode, and a detection starting button in a main program of computer detection can be clicked; the moment detection mechanism 102 shown in fig. 5 and 6 is driven by the detection sliding table 103 shown in fig. 7 and 8 to move left horizontally at a uniform speed until the sleeve 17 is engaged with the hexagonal head of the worm of the adjusting arm, and then the sleeve moves to the proximity switch 39 to sense that the indication lamp is turned on and stopped, and the detection sliding table 103 shown in fig. 7 and 8 enters a self-locking state; at this time, the sleeve 17 moves to the right to compress the compression spring B16, the servo motor a 33 of the torque detection mechanism 102 shown in fig. 5 and 6 starts to rotate clockwise for one circle, drives the universal floating adjustment mechanism, automatically generates a torque curve under the mutual automatic adjustment coordination of the cross universal joint coupling 21, the cylindrical hole aligning ball bearing B22, the cylindrical hole aligning ball bearing a15 and the front and rear free sliding devices, and under the thrust of the compression spring B16 to the left, the hexagonal inside the sleeve 17 and the hexagonal head of the adjusting arm worm are completely in butt joint fit, the servo motor a 33 of the torque detection mechanism 102 shown in fig. 5 and 6 is switched to rotate counterclockwise for one circle to automatically detect the torque of the adjusting arm, during the detection, the torque rotation speed sensor 30 detects the torque signal output by each tooth of the adjusting arm and accurately transmits the torque signal to the analog port of the data acquisition card of the computer control unit in real time, processes the computer data, automatically generates the torque curve, displays the highest and lowest peak value on the screen, and compares with the set standard curve, after the servo motor a 33 rotates counterclockwise, the servo motor controls the sliding table to automatically move to the right for one circle to the moment detection 103, the end of the sliding table automatically, the product is automatically pushed out of the product is automatically moved to the original point of the cylinder 102, and the product is automatically loaded into the original point of the thin type (the product is automatically pulled out by the cylinder 102, and the product is ready to be automatically clamped by the original point of the cylinder).
After the whole detection process is finished, the detection result automatically stores the number codes of the detected products which are input into a computer hard disk in an Excel format, meanwhile, the number codes are also displayed in a product detection column below a page, detection data are called out at any time, the computer detection program is directly displayed to be qualified and unqualified, meanwhile, a detection table panel is provided with a qualified and unqualified (beep) indicator lamp for display, and after one detection period is finished, the system accumulates one product and directly displays the qualification rate.
During detection, the servo motor rotates for one circle, the torque of each tooth of the adjusting arm is accurately transmitted to the torque rotating speed sensor through the universal floating transmission torque detection mechanism, a detection output signal is processed by computer data to automatically generate a torque curve, the torque curve is displayed on a screen of the liquid crystal display 72, the highest and lowest peak values are automatically read, and the highest and lowest peak values are compared with a set standard curve to confirm; the product quick clamping mechanism is designed, the belt is adjustable, and the product quick clamping mechanism is suitable for clamping various products; the torque detection universal floating adjusting mechanism is designed, universal automatic adjustment and compensation are carried out according to the shape and position errors of each adjusting arm, the torque output by the hexagonal head of the worm of the adjusting arm is not perpendicular to the detection sleeve, the generated lateral friction resistance is eliminated, and the torque accurate real-time detection of various types of automobile adjusting arms is met; after the brake is installed on an automobile, the wheels are ensured to have constant brake gaps, and the brake push rod is always positioned at the initial position before braking, so that the optimal brake moment is ensured, and the braking effect of all the wheels is consistent, stable and safe and reliable. A detection sliding table is designed; the control debugging system is designed, so that the system can be suitable for products with various similar structures and different sizes; the system designs a product number input address bar and a two-dimensional code scanning system, has the statistics of the total detection number and the statistics of the qualification rate, inputs the product number when detecting one product, or scans the two-dimensional code set on the product by using a scanning gun, the detected product number is automatically input into the address bar, and data is automatically stored into a computer system in an Excel format by taking the product number as a file name after the detection is finished, so that the traceability of the product is realized; the automobile adjusting arm product is effectively controlled after being put on the market, and the detection table uses the mechanical, electrical and gas integration technology, so that the performance is stable and reliable.
The detection sliding table in the automatic detection table can also adopt a linear guide rail combination or an electric cylinder and the like to realize the aim of linear motion.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. Automatic adjustment arm moment performance automatic check out test table, including product clamping mechanism, moment detection mechanism and detection slip table, computer control unit, moment detection mechanism can detect slip table on the slip table, moment detection mechanism includes the sleeve for with the hexagonal head joint of automatic adjustment arm, its characterized in that: the torque detection mechanism comprises a universal floating adjustment mechanism and an independent front-back free sliding device, the sleeve can slide on the independent front-back free sliding device, and the sleeve is connected with the universal floating adjustment mechanism; the torque detection mechanism further comprises a servo motor A, and the servo motor A is used for driving the sleeve and the universal floating adjustment structure to rotate; a compression spring B is arranged in the sleeve;
the universal floating adjusting mechanism comprises a cylindrical hole aligning ball bearing B which is vertically connected with the main body structure of the universal floating adjusting mechanism; the computer control unit is integrated with a data digital acquisition subunit and is used for acquiring the signals of the torque and rotation speed sensor.
2. The automatically adjustable arm moment performance automatic test stand of claim 1, wherein: the universal floating adjusting mechanism comprises a cross universal joint coupler, a universal joint mounting seat, a conversion shaft A, a conversion shaft B and a cylindrical hole aligning ball bearing B; one end of the conversion shaft A is fixedly connected with the sleeve; the other end of the conversion shaft A is connected with the cross universal joint coupler; the cylindrical hole aligning ball bearing B is arranged in the cross universal joint coupler in the direction perpendicular to the conversion shaft B, and a universal joint sheath is arranged on the cylindrical hole aligning ball bearing B; the universal joint sheath is firmly fixed with the universal joint mounting seat, the universal joint mounting seat is mounted on the moving plate, and a pair of double-joint angular contact ball bearings A and the conversion shaft B are mounted in the middle of the universal joint mounting seat; and the other end of the cross universal joint coupler, which is parallel to the conversion shaft A, is connected with one end of the conversion shaft B.
3. The automatically adjustable arm moment performance automatic test stand of claim 2, wherein: bearing end covers B are arranged at two ends of the paired double-joint angular contact ball bearings A; the axial movement of the conversion shaft B is fixed with a collar a.
4. The automatically adjustable arm moment performance automatic test stand of claim 1, wherein: the torque detection mechanism comprises an automatic adjusting arm hexagonal head access mechanism, an outward floating adjusting mechanism, a quincuncial coupling A, a torque rotation speed sensor, a quincuncial coupling B, a speed reducer and a servo motor A which are connected in sequence; and the sleeve mounting seat, the universal joint mounting seat, the torque and rotation speed sensor mounting seat and the speed reducer mounting seat are arranged on the moving plate.
5. The automatically adjustable arm moment performance automatic test stand of claim 1, wherein: the independent front-back free sliding device comprises a single-lining type linear bearing, a guide plate, a compression spring A and a precision shaft A; the single lining type linear bearing is arranged in the guide plate and fixed on the moving plate together, the fine shaft A and the compression spring A are sleeved in the middle of the single lining type linear bearing, and the single lining type linear bearing and the compression spring A are pressed and fixed in the adjusting plate together through the fine shaft A.
6. The automatically adjustable arm moment performance automatic test stand of claim 1, wherein: the hexagonal head access mechanism of the automatic adjusting arm has the following structure: the movable plate is provided with a dovetail groove, an adjusting plate is arranged in the dovetail groove, a cylindrical hole aligning ball bearing A is arranged in the adjusting plate, two ends of the cylindrical hole aligning ball bearing A are provided with bearing end covers A, the sleeve is arranged in the cylindrical hole aligning ball bearing A in a sliding manner, a compression spring B is arranged in the sleeve, and the sleeve is sleeved on the conversion shaft A.
7. The automatically adjustable arm moment performance automatic test stand of claim 1, wherein: the detection sliding table comprises a proximity switch and is used for sensing the joint position of the hexagonal head and the sleeve to be determined, and when the proximity switch senses that the indicator lamp is on, the detection sliding table stops moving forward and enters a self-locking state; the proximity switch is arranged on the sensor and fixes the sensor on the slipway mounting seat A.
8. The automatically adjustable arm moment performance automatic test stand of claim 1, wherein: the structure of the detection sliding table is as follows: a base plate, a sliding table mounting seat A and a sliding table mounting seat B are combined into a sliding table main body; the ball screw provided with the ball screw nut mounting seat, the deep groove ball bearing and the paired double-joint angular contact ball bearings B are arranged in the sliding table mounting seat A and the sliding table mounting seat B together, the two ends of the paired double-joint angular contact ball bearings B are required to be provided with the bearing end covers C and the shaft rings B, and the ball screw shafts are adjusted and fixed by hexagonal thin nuts, so that the ball screw shafts can bear larger loads in the left-right direction and cannot axially displace; the servo motor B, the speed reducer B and the speed reducer mounting seat are connected in series on the slipway mounting seat B for fixing, one end of the quincuncial coupling B for the middle is connected with the output shaft of the speed reducer B, and the other end is connected with the ball screw, so that a complete transmission power device is formed; the linear bearing box type unit is sleeved into the fine shaft B, and the fine shaft B is fixed at two ends of the sliding table mounting seat A and the sliding table mounting seat B; the sensor mounting plate with the proximity switch is fixed on the sliding table mounting seat A to form a complete detection sliding table, so that the rotating motion of the servo motor drives the ball screw nut mounting seat to do direct translational motion through the ball screw, and the sliding table can be adjusted to stop in advancing displacement under the control of the proximity switch.
9. An automatically adjusting arm moment performance automatic test stand according to any one of claims 2-8, wherein: and the moving plate of the moment detection mechanism is assembled with the ball screw nut mounting seat on the detection sliding table and the four linear bearing box-type units.
10. The automatically adjustable arm moment performance automatic test stand of claim 1, wherein: the product clamping mechanism comprises a compression power source formed by assembling a cylinder supporting seat, a thin cylinder, a cylinder connecting seat and a product positioning seat which are sequentially arranged from bottom to top; the product clamping mechanism further comprises an adjusting positioning seat and an adjusting plate which are sequentially connected with the cylinder connecting seat, and the adjusting positioning seat and the adjusting plate are used for adjusting and supporting adjusting arms with different specifications; the product clamping mechanism further comprises a hinge pressing plate combination and a pull rod which are movably connected, the hinge pressing plate combination and the pull rod are installed on a thin type air cylinder piston rod together, and the hinge pressing plate combination is enabled to rapidly press and loosen a tested adjusting arm product under the driving of the thin type air cylinder piston rod.
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| CN111413104B (en) * | 2020-03-20 | 2021-09-17 | 重庆凯装自动化设备有限公司 | Adjusting device and method for simulating replacement of brake lining by four-degree-of-freedom automobile self-adjusting arm |
| CN111579231B (en) * | 2020-05-20 | 2022-03-29 | 中国重汽集团济南动力有限公司 | Brake clearance automatic adjusting arm performance detection device and performance detection method |
| CN113567017B (en) * | 2021-07-30 | 2023-03-14 | 郑州机械研究所有限公司 | Measuring mechanism for measuring static moment of object |
| CN113884050B (en) * | 2021-08-09 | 2024-09-17 | 昆山和博芯创电子科技有限公司 | Sleeve detection equipment |
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