KR20010082406A - Auto mesuring system for DTV of brake disk/drum in car - Google Patents

Abstract

PURPOSE: An automatic DTV(Disk Thickness Variation) measuring system of disk/drum in a vehicle brake is provided to automatically measure DTV/run-out of the disk/drum. CONSTITUTION: A disk thickness measuring unit(7) is installd with upper/lower sensors. A drum-measuring unit(5) mounts a drum sensor to detect run out of the drum by elevating in a body. The DTV measuring system controls the driving of the drum/disk thickness-measuring units with a monitor and a keyboard by being contained in an upper side of a body. Then, the DTV measuring system analyzes data detected by the upper/lower sensors and the drum sensor. A computer outputs DTV, SRO and run-out of the drum. If a brake disk of a vehicle is installed on a disk holder of the system body, the DTV and the drum run-out is finely measured to improve convenience of the automatic DTV measuring system.

Description

Auto mesuring system for DTV of brake disk / drum in car}

The present invention relates to a system for automatically measuring a vehicle brake disk / drum, which is particularly effective when the disk / drum is mounted on a disk / drum holder, while automatically measuring the disk thickness variation (DTV). SRO) and drum runout are measured precisely and quickly to obtain useful information for comparing and analyzing the causes of cold judder during braking by distance.

The disc brake applied to the disc brake braking method of the vehicle is a brake pad in which a friction material is attached to a disk-shaped disc that rotates integrally with a wheel, and is tightened from both sides to generate a braking force.

The disk has a high temperature due to friction with the brake pads when braking, which causes partial wear on the surface of the disk, which causes vibration and noise in the handle or instrument channel when the brake pedal is pressed during the medium and high speed driving of the vehicle. This so-called curl judder phenomenon occurs.

The cold judder phenomenon is mainly caused by the shaking of the disc brake due to uneven wear of the brake disc.

Therefore, in the related art, the deflection (deflection) of the disk surface as described above, that is, the cone shape with the radial angle inclined outward from the center and the wear of the disk surface, and the horizontal surface of the disk surface A technique for detecting a runout occurring to analyze a disc's TV, runout, and the like is known from Korean Patent Application Laid-Open No. 1999-0055933.

This is because the disk is mounted on the brake dynamo that executes the driving conditions, and the thickness sensor is installed on both surfaces of the disk, and this sensor is connected to the sensor control part, and this sensor control part is connected to the electronic control part having an output device. It is a type.

However, in the case of this type, the disc's dive / runout measurement and analysis are proposed, but the method of performing the above measurement by automatically seating the disc in the device is not presented. There is a problem that means for measuring drums, which are mainly used for rear wheels, are not devised.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic measurement system for a vehicle brake disc / drum that enables automatic measurement and analysis of the disc / drum dive / runout in one device to solve the above problems. .

Another object of the present invention is to provide an automatic measurement system for a disc brake of a vehicle brake disc / drum, which enables a disc jig of various sizes to be measured and analyzed using a universal jig.

1 is a reference view from the front of the present invention

2 is a disc dive according to the present invention installed in an automatic measuring system main body.

Reference view from the side of the disk thickness measurement section and the drum measurement section

Figure 3 is a reference diagram showing in more detail the disk thickness measurement unit of the present invention

Figure 4 is a reference diagram showing in more detail the drum measuring unit of the present invention

FIG. 5 is a reference view of FIG. 4 viewed in plan

Figure 6 is a reference diagram showing a drive system of the disk / drum measurement unit according to the present invention

Figure 7 is a universal jig jig for mounting the workpiece (disk / drum) in the present invention

One embodiment configured as

8 is a reference diagram illustrating a method of measuring the accuracy of the universal jig of FIG.

9A and 9B are operational flows in which the computer of the present invention controls measurement / analysis tasks

An embodiment also shows

Explanation of symbols on the main parts of the drawings

1. Control unit 2. Computer

3. Monitor 4. Keyboard

5. Drum Measuring Unit 51. Timing Belt

52.Guide Pin 53.Adjustment Guide

55. Rent

56. Base 57. Up-down frame

59.Slide Beam 60,61. Frame up / down position sensor

6. Workpiece holder 7. Disk thickness measurement part

71,72. Up / Down thickness sensor 77. Position adjusting knob

79. Sensor support frame 80. Proximity switch

81. Proximity switch support 82. Sensor movement motor

83. Thickness measurement sensor Body guide

9. Work piece drive section 91. Work piece holder support

92. Aero rotor 93. Drive motor

95. Driving support

100. Universal jig 101. Reference center jig

102. Rotor center fixing jig 104. Rotor mounting jig

105. Adapter Jig 106. Air Bearing

In particular, the present invention provides a disk thickness measurement unit provided with a thickness up / down sensor for automatically approaching an outer circumferential surface of a disk and measuring a disk thickness, and a drum sensor for detecting a drum runout inside a drum to be measured while coming out from the main body. Is installed on the upper side of the main body and the drum measuring unit installed on the main body and controls the up, down, left and right driving of the disk thickness measuring unit and the drum measuring unit together with the monitor / keyboard and analyzes the data detected by the thickness up / down sensor and the drum sensor. The automatic measurement system features a dive of the brake disc of the vehicle, which consists of a computer that outputs the RAL and the drum runout and outputs it to a printer or monitor.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 shows a front view of a dive automatic measurement system of a vehicle brake disc / drum according to the present invention.

Here, the control unit 1, the computer 2, and the monitor 3 for controlling the system are arranged in the main body.

In addition, the inside of the main body is shown from the side as shown in FIG.

Here, the drum measuring unit 5, the workpiece (disk / drum) holder 6, the disk thickness measuring unit 7, and the workpiece driving unit 9 are provided in the main body.

The workpiece holder 6 is designed to be mounted on the drum / disc thickness measuring part 5, 7 in the main body by a sensor when the workpiece holder is mounted from the usual inspection stand and the disc or the drum is mounted thereon.

On the other hand, Figure 3 shows the disk thickness measuring unit 7 according to the present invention in more detail.

Here, the upper and lower thickness measuring sensors 71 and 72 provided above and below the sensor support frame 79 for the thickness of the disk which is the workpiece | work 10, and the sensor which supports this thickness measuring sensor 71 and 72. Left and right to guide the sensor support frame 79 to move left and right by the support frame 79, the sensor moving motor 82 to move the sensor support frame 79 to the left and right, and the sensor moving motor 82. When the movement guide portion 83, the sensor support frame 79 moves to the left and right, the proximity switch 80 for properly sensing the movement position from the right side, and the proximity switch support 81 for supporting the proximity switch 80 It consists of.

In the figure, reference numeral 77 is a manual positioning knob, and 84 is a support for a measuring bench.

In addition, Figure 4 shows an excerpt of the drum measuring unit 5, which is a sliding beam 59 for moving the workpiece holder 6 up and down, and an up-down frame which is guided by the sliding beam 59 and moved up and down. (57), the guide pin 52 for placing the disk / drum in the workpiece holder (6), the adjustment guide 53 and the workpiece holder (6) on which the disk / drum, and the up-down frame (57) And a pedestal 56 which is integrally coupled with the support holder 6 to support the abutment 55 and the timing belt 51 which holds the position when the up-down frame 57 is moved up and down in the sliding beam 59. )

In addition, the workpiece holder 6 is provided with a workpiece sensor 63 for sensing the workpiece as shown in Figure 5 and the upper position detecting sensor 60 is provided on the upper side of the up-down frame 57. .

6 shows a workpiece driving portion 9 for mounting the disk 10 which is the workpiece 10 in the workpiece holder 6 and for driving at low speed / medium speed / high speed to measure the runout. When the workpiece 10 is mounted on the holder 6, the power transmission shaft 91 which transmits the rotational force generated from the driving motor 93 to the workpiece holder 6 and the air is transferred to the power transmission shaft 91. It consists of the air rotor 92 which provides rotational power by a bearing, the drive motor 93 which drives this air rotor 92, and the base 95.

On the other hand, Figure 7 shows an example in which the workpiece holder 6 as shown in FIG.

Here is a universal jig type for mounting the workpiece 10 to the system according to its various diameters when the workpiece 10 is a disk, which is a central holding jig 101 and a central axis of the central holding jig 101. A rotor mounting jig 104 coupled to the rotor and having a rubbing rotor fixing jig 102 for holding disk diameters of various diameters, a rubbing groove for seating the rubbing rotor fixing jig 102, and an adapter; Jig 105 and air bearing 106 are included.

The present invention of such a configuration uses the various keys of the control unit 1 as shown in Figs. 1 and 2 to power the system and to make the computer 2 and the monitor 4 operate.

Then, when the workpiece of the disk or the drum is mounted on the workpiece holder 6, the workpiece sensor 63 as shown in Figure 5 detects the workpiece, the upper and lower thickness measurement sensor (71, Automatically descend to the position of 72).

At this time, the up / down operation of the workpiece 6 is guided up and down by the slide beam 59 of the up and down frame 57 of the base 56 supporting the workpiece holder 6, as shown in FIG. On the frame, the lower position sensors (60, 61) is to stop at an appropriate position.

In this state, when the workpiece is a drum measurement, a plurality of inner diameter sensors disposed inside the drum of the drum measuring unit 5 are operated to measure the drum inner diameter. In the case of measuring the disk thickness, FIG. The sensor moving motor 82 of the disk thickness measuring unit 7 is driven as described above, and the sensor support frame 79 is guided by the left and right moving guide part 83 and moved from right to left to be installed on the sensor support frame 79. The upper and lower thickness measuring sensors 71 and 72 are positioned close to the upper and lower surfaces of the disk, which is the workpiece 10 mounted on the workpiece holder 6.

In this state, when the drive motor 93 is operated as shown in FIG. 6, when the workpiece holder 6 is rotated through the air rotor 92 and the power transmission shaft 91, the disc or drum as the workpiece 10 is rotated. Is to rotate at a predetermined speed.

On the other hand, the series of operations are performed through the operation of the computer 2, the monitor 3, the keyboard 4 as shown in Figs. 1 and 2, and these measurement operations are performed in the measurement workflow as shown in Figs. 9A and 9B. It is done.

That is, when the initialization state of the system is completed, the work lifter checks whether it is in top dead center or operates to go to top dead center, and in case of top dead center, it checks whether the lower and lower thickness measuring sensors 71 and 72 are in a predetermined position, or moves to a predetermined position. The disk is mounted on the workpiece holder 6 when it is moved to the predetermined position.

When the disk is mounted and the mounting is completed, press the start button on the control unit 1, the workpiece holder 6 is lowered to a predetermined position, the air valve is opened to clean the jig for about 2 seconds, and the air spins are removed. It drives up to 360 degrees and outputs the marking start signal.

After checking the seating of the disk, if it is seated, the upper and lower thickness measurement sensors (71, 72) are relaxed, and when the relaxation is completed, the upper and lower thickness measuring sensors (71, 72) are advanced to the disk side. The drive motor 93 is rotated to be at a predetermined position.

After the measurement is finished, the driving motor 93 is stopped, the upper and lower thickness measuring sensors 71 and 72 are relaxed, and the workpiece holder 6 is restored to the initial position after restoring to the normal position. .

When the universal jig of FIGS. 7 and 8 is used, the disc is placed on the rotor mounting jig 104 having a conical groove according to the inner diameter of the disc, and the rotor center fixing jig 102 is referred to as the reference center jig 101. Hold the disc in the center position while inserting it in the slot.

After that, the adapter jig 105 and the air bearing 106 is connected to operate the workpiece.

The upper and lower thickness measuring sensors 71 and 72 can measure the disk thickness of the workpiece 6 in a rotational state to obtain a DTV, which is analyzed by a computer 2 to monitor SRO, BTV and the like. You can check with (3) or get the printer output.

When the disk and drum of the vehicle brake are placed on the workpiece holder of the system, the present invention automatically measures and analyzes the TV, SAL, and BITV by a computer according to the type of the work, and monitors and analyzes them by a monitor or a printer. By outputting it is possible to achieve the automation of these measurements.

Claims (1)

A disk thickness measuring unit 7 provided with thickness upper / lower sensors 72 and 75 for automatically approaching the outer circumferential surface of the disk to measure the thickness of the disk, and the drum runout is detected inside the drum to be measured as it emerges from the main body up and down. A drum measuring unit (5) having a drum sensor (63) provided therein, and a disk thickness measuring unit (7) and a drum measuring unit (5) built in the upper side of the main body together with a monitor (3) / keyboard (4). After controlling the up, down, left and right driving of the sensor, and analyzing the data detected by the thickness up / down sensors 72, 75 and the drum sensor 63, the runout of the target, SAL, and drum can be obtained, 3) The automatic measurement system of the vehicle brake disc / drum, which consists of a computer (2) which outputs to 3).