CN112050716A - Brake disc DTV measuring device - Google Patents
Brake disc DTV measuring device Download PDFInfo
- Publication number
- CN112050716A CN112050716A CN202011033927.7A CN202011033927A CN112050716A CN 112050716 A CN112050716 A CN 112050716A CN 202011033927 A CN202011033927 A CN 202011033927A CN 112050716 A CN112050716 A CN 112050716A
- Authority
- CN
- China
- Prior art keywords
- support rod
- adjusting support
- bracing piece
- brake disc
- bolt
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0025—Measuring of vehicle parts
Abstract
The invention relates to a brake disc DTV measuring device, and belongs to the field of automobile part detection equipment. The brake disc to be measured is clamped between two side arms of the U-shaped measuring body, the first support can adjust the position of the first support in the axial direction of the brake disc along the length direction of the axial adjusting support rod, one end of the axial adjusting support rod can be adjustably fixed on the radial adjusting support rod, and the lower end of the radial adjusting support rod can be adjustably fixed on the transverse adjusting support rod; the inner side of the side arm of the U-shaped measuring body close to the radial adjusting support rod is fixedly provided with a measuring head, the inner side of the other side arm of the U-shaped measuring body is fixedly provided with a dial indicator matched with the measuring head for use, a measuring needle of the dial indicator is opposite to the measuring head, and the measuring head and the measuring needle of the dial indicator are on the same axis. The device has the advantages of low cost, simple structure and accurate and comprehensive measurement result.
Description
Technical Field
The invention belongs to the field of automobile part detection equipment, and relates to a brake disc DTV measuring device.
Background
Brake discs are the core part of automotive disc brakes. One of the key functional indexes of the brake disc is the thickness variation difference of the braking surfaces at two sides of the brake disc, which is called DTV for short. The DTV out-of-tolerance easily causes the unstable braking process of the vehicle, namely the braking torque has periodic fluctuation change, and the periodic fluctuation torque easily excites the vibration of a suspension system, so that the vehicle body resonance, particularly the circumferential swing of a steering wheel, is caused, and the driving comfort of the vehicle is greatly reduced;
at present, a spiral micrometer, a brake disc comprehensive measuring instrument or a displacement sensor which is installed in a split mode are mainly used for measuring the brake disc DTV. The thickness micrometer is low in measurement accuracy, the number of measurement points is limited, the measured positions may not be the thickest and thinnest limit positions of the brake disc, and therefore the DTV of the brake disc cannot be accurately measured. The brake disc comprehensive measuring instrument is accurate in measurement, but only can measure a single brake disc, cannot measure the brake disc in an assembly installation state, is huge in equipment, cannot move randomly, and is only suitable for detection of line-unloading parts of a brake disc production line.
The displacement sensor which is installed separately measures, generally adopts a capacitance or inductance displacement sensor, is provided with sensor driving and data acquisition equipment and a computer, can measure a continuous change curve of the DTV, is used for vehicle-mounted detection or matched with an efficiency bench for use, and is also provided with a driving device of a brake disc when being used on a vehicle, can measure in an assembly installation state, but has longer preparation time for measurement and installation, larger equipment volume and poor portability; the above methods are not suitable for detection where rapid detection and fault diagnosis are desired.
Disclosure of Invention
In view of the above, the present invention is directed to a brake disc DTV measuring device to solve the problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a brake disc DTV measuring device, include that the U type that connects through the support one measures body and axial adjustment bracing piece, the measuring brake disc card that awaits measuring is between two side arms of the U type measurement body, the support one can be along the axial adjustment bracing piece length direction on the axial direction of brake disc adjusting position, the one end of axial adjustment bracing piece can be adjusted fix on radial adjustment bracing piece, the lower extreme of radial adjustment bracing piece can be adjusted fix on horizontal adjustment bracing piece, horizontal adjustment bracing piece is perpendicular with radial adjustment bracing piece, horizontal adjustment bracing piece also is perpendicular with axial adjustment bracing piece.
The measuring head is fixed on the inner side of a side arm of the U-shaped measuring body close to the radial adjusting supporting rod, the dial indicator matched with the measuring head is fixed on the inner side of the other side arm of the U-shaped measuring body, a measuring needle of the dial indicator is opposite to the measuring head, the measuring head and the measuring needle of the dial indicator are on the same axis, and the measuring head and the measuring needle of the dial indicator can be guaranteed to be always attached to the disc surface of the brake disc during measurement.
Furthermore, one end of a tension spring is fixed on an outer side arm of the U-shaped measuring body, a connecting arm perpendicular to the middle plate is integrally arranged in the middle of the outer side wall of the middle plate of the support, the connecting arm extends towards the direction far away from the middle plate, the installed connecting arm is parallel to the axial adjusting support rod, and the other end of the tension spring is fixed at the free end of the connecting arm.
Further, the sleeve is integrally fixed outside the middle connecting plate of the U-shaped measuring body, the axis of the sleeve is perpendicular to the middle connecting plate, the first support is of a U-shaped structure, a rotating shaft is arranged between the two side walls of the first support, the two ends of the rotating shaft are fixed at the free ends of the two side walls of the first support through the first bolts after the rotating shaft penetrates through the sleeve, the size of the sleeve corresponds to the rotating length between the first support, and the U-shaped measuring body can freely swing around the rotating shaft in a zero-gap mode.
Furthermore, the end part of a side arm of the U-shaped measuring body for mounting the dial indicator is provided with an integrated chuck of a U-shaped structure, semicircular grooves used for wrapping dial indicator rods are formed in the chuck and the side arm respectively and oppositely, corresponding internal thread holes are formed in the chuck above the semicircular grooves and the side arm respectively, and the dial indicator rods are locked by bolts after being inserted into the semicircular grooves.
Further, the middle part of the axial adjusting supporting rod is provided with a square groove, a square boss is fixed on the outer side of the connecting plate at the middle part of the support, the square boss can slide in the square groove, the lower end face of the square boss is fixed at the middle part of the connecting plate at the middle part of the support, the upper end face of the square boss is provided with an internal thread hole, and the square boss is locked by a bolt five and a cushion block after passing through the square groove.
Further, the middle part of radial adjustment bracing piece is opened there is the square groove that extends along length direction, the tip that axial adjustment bracing piece and radial adjustment bracing piece are connected is provided with integrative bracing piece connecting plate, the bracing piece connecting plate is perpendicular with axial adjustment bracing piece, the outside of bracing piece connecting plate is integrative to be fixed with can be at square inslot gliding square boss, the bracing piece connecting plate is opened with the middle part of square boss has the internal thread through-hole, square boss passes and dies axial adjustment bracing piece with six and cushion blocks of bolt behind the square groove.
Further, the middle part of the transverse adjusting support rod is provided with a square groove extending along the length direction of the transverse adjusting support rod, the outer side surface of the lower end of the radial adjusting support rod is fixed with an integrated square boss capable of sliding in the square groove, the middle part of the square boss is provided with an internal thread hole penetrating through the square boss and the radial adjusting support rod, and the square boss penetrates through the square groove and then is locked on the transverse adjusting support rod through a bolt seven and a cushion block.
Further, the end of the transverse adjusting support rod outside the square groove on the transverse adjusting support rod is provided with an internal thread hole, a third bolt is assembled in the internal thread hole, a fourth bolt is installed in one end, far away from the third bolt, of the groove above the transverse adjusting support rod, the radial adjusting support rod is located between the third bolt and the fourth bolt, and the position of the fourth bolt can be adjusted in the square groove.
The invention has the beneficial effects that:
this measuring device low cost, small in size, simple and convenient, portable, the installation is quick, the measuring pin of gauge head and amesdial is laminated with the quotation of brake disc all the time, and measuring result is accurate comprehensive, and this device is radial and transversely can both adjust, and application scope is wider, and this device can be used for production line short-term test to and road test field and end user's quick failure diagnosis etc..
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic structural view of the apparatus;
FIG. 2 is a schematic diagram of the apparatus in partial explosion;
FIG. 3 is a schematic view of the present apparatus during detection.
Description of reference numerals:
1. a third bolt; 2. transversely adjusting the supporting rod; 3. a seventh bolt; 4. a fourth bolt; 5. a U-shaped measuring body; 51. a sleeve; 52. clamping a head; 6. a sixth bolt; 7. a rotating shaft; 8. a radial adjusting support rod; 9. a fifth bolt; 10. a first bracket; 101. a connecting arm; 11. an axial adjustment support rod; 12. a tension spring; 13. a first bolt; 14. a dial indicator; 15. a second bolt; 16. a measuring head; 17. a brake disc; 18. a steering knuckle assembly.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1 to 3, a brake disc DTV measuring device includes a U-shaped measuring body 5 and an axial adjusting support rod 11 connected by a bracket one 10, wherein a brake disc 17 to be measured is clamped between two side arms of the U-shaped measuring body 5. A sleeve 51 is integrally fixed outside the middle connecting plate of the U-shaped measuring body 5, the axis of the sleeve 51 is perpendicular to the middle connecting plate, the first support 10 is of a U-shaped structure, a rotating shaft 7 is arranged between two side walls of the first support 10, two ends of the rotating shaft 7 are fixed at free ends of the two side walls of the first support 10 through a first bolt 13 after penetrating through the sleeve 51, the size of the sleeve 51 corresponds to the rotating length between the first support 10, and the U-shaped measuring body 5 can freely swing around the rotating shaft 7 in a zero gap mode and does not have axial movement and radial movement. The first bracket 10 can adjust the position along the length direction of the support rod 11 along the axial direction.
One end of the axial adjusting support rod 11 is adjustably fixed on the radial adjusting support rod 8, the axial adjusting support rod 11 is perpendicular to the radial adjusting support rod 8, the lower end of the radial adjusting support rod 8 is adjustably fixed on the transverse adjusting support rod 2, the transverse adjusting support rod 2 is perpendicular to the radial adjusting support rod 8, and the transverse adjusting support rod 2 is also perpendicular to the axial adjusting support rod 11.
A measuring head 16 is fixed on the inner side of a side arm of the U-shaped measuring body 5 close to the radial adjusting support rod 8, a dial indicator 14 matched with the measuring head 16 is fixed on the inner side of the other side arm of the U-shaped measuring body 5, a measuring needle of the dial indicator 14 is opposite to the measuring head 16, and the measuring head 16 and the measuring needle of the dial indicator 14 are on the same axis.
The end part of the side arm of the U-shaped measuring body 5, which is provided with the dial gauge 14, is provided with an integrated U-shaped chuck 52, semicircular grooves used for wrapping gauge rods of the dial gauge 14 are respectively and oppositely formed in the chuck 52 and the side arm, corresponding internal thread holes are respectively formed in the chuck 52 and the side arm above the semicircular grooves, and the gauge rods of the dial gauge 14 are locked by bolts two 15 after being inserted into the semicircular grooves.
One end of a tension spring 12 is fixed on an outer side arm of the U-shaped measuring body 5, a connecting arm 101 perpendicular to the middle plate is integrally arranged in the middle of the outer side wall of the middle plate of the first support 10, the connecting arm 101 extends towards the direction far away from the middle plate, the connecting arm 101 is parallel to the axial adjusting support rod 11 after being installed, the other end of the tension spring 12 is fixed on the free end of the connecting arm 101, and the tension spring 12 keeps in a stretching state during testing.
A square groove is formed in the middle of the axial adjusting support rod 11, a square boss is fixed to the outer side of a connecting plate in the middle of the first support 10, the lower end face of the square boss is fixed to the middle of the connecting plate in the middle of the first support 10, an internal thread hole is formed in the upper end face of the square boss, and the first support 10 is locked at a required position through a bolt five 9 and a cushion block after the square boss penetrates through the square groove.
The middle part of radial regulation bracing piece 8 is opened there is the square groove that extends along length direction, the tip that axial regulation bracing piece 11 and radial regulation bracing piece 8 are connected is provided with integrative bracing piece connecting plate, the bracing piece connecting plate is perpendicular with axial regulation bracing piece 11, the outside of bracing piece connecting plate is integrative to be fixed with square boss, the bracing piece connecting plate is opened with the middle part of square boss has the internal thread through-hole, square boss passes and dies axial regulation bracing piece 11 lock required position with six 6 of bolt and cushion after the square groove.
The middle part of the transverse adjusting support rod 2 is provided with a square groove extending along the length direction, the outer side surface of the lower end of the radial adjusting support rod 8 is fixed with an integrated square boss, the middle part of the square boss is provided with an internal thread hole running through the square boss and the radial adjusting support rod 8, and the square boss passes through the square groove and then is locked at a required position on the transverse adjusting support rod 2 by using a bolt seven 3 and a cushion block.
The end part of the transverse adjusting supporting rod 2 outside the square groove on the transverse adjusting supporting rod 2 is fixed with a third bolt 1, one end of the transverse adjusting supporting rod 2, far away from the third bolt 1, in the groove is arranged above the transverse adjusting supporting rod, a fourth bolt 4 is installed, the radial adjusting supporting rod 8 is located between the third bolt 1 and the fourth bolt 4, and the position of the fourth bolt 4 can be adjusted.
The dial gauge 14 is a high precision mechanical or digital dial gauge 14.
The working principle of the device is as follows:
installing the detection device on a brake knuckle assembly 18 according to the attached drawing 3, adjusting a measuring head 16 on a U-shaped measuring body 5 and a measuring pin of a dial indicator 14 to be in contact with a brake disc 17, adjusting one side of the U-shaped measuring body 5 to be parallel to the surface of the brake disc 17, and enabling the axes of the measuring head 16 and the dial indicator 14 to be perpendicular to the surface of the brake disc 17; the first support 10 can slide in a square groove of the axial adjusting support rod 11, the axial adjusting support rod 11 can slide in a square groove of the radial adjusting support rod 8, the radial adjusting support rod 8 can slide in a groove of the transverse adjusting support rod 2, and the first support is fixed after all the first support is adjusted to a proper detection position; then the brake disc 17 is rotated at a low speed, the change of the indicated value of the dial indicator 14 is observed, the maximum indicated value and the minimum indicated value are respectively recorded, and the difference between the two values is the DTV value of the brake disc 17. Then, the supporting rod 11 is axially adjusted by moving along the radial direction of the brake disc 17, and the DTV values of different radiuses of the surface of the brake disc 17 are tested.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (8)
1. A brake disk DTV measurement device, characterized by: the device comprises a U-shaped measuring body (5) and an axial adjusting support rod (11) which are connected through a first support (10), a brake disc (17) to be measured is clamped between two side arms of the U-shaped measuring body (5), the first support (10) can adjust the position of the brake disc (17) in the axial direction along the length direction of the axial adjusting support rod (11), one end of the axial adjusting support rod (11) can be adjustably fixed on a radial adjusting support rod (8), the lower end of the radial adjusting support rod (8) can be adjustably fixed on a transverse adjusting support rod (2), the transverse adjusting support rod (2) is perpendicular to the radial adjusting support rod (8), and the transverse adjusting support rod (2) is also perpendicular to the axial adjusting support rod (11);
the measuring head (16) is fixed on the inner side of a side arm of the U-shaped measuring body (5) close to the radial adjusting support rod (8), the dial indicator (14) matched with the measuring head (16) for use is fixed on the inner side of the other side arm of the U-shaped measuring body (5), the measuring needle of the dial indicator (14) is opposite to the measuring head (16), the measuring needles of the measuring head (16) and the dial indicator (14) are on the same axis, and the measuring needles of the measuring head (16) and the dial indicator (14) can be guaranteed to be attached to the disc surface of the brake disc (17) all the time during measurement.
2. The brake disc DTV measurement device of claim 1, wherein: one end of a tension spring (12) is fixed on an outer side arm of the U-shaped measuring body (5), a connecting arm (101) perpendicular to the middle plate is integrally arranged in the middle of the outer side wall of the middle plate of the first support (10), the connecting arm (101) extends towards the direction far away from the middle plate, the installed connecting arm (101) is parallel to the axial adjusting support rod (11), and the other end of the tension spring (12) is fixed at the free end of the connecting arm (101).
3. The brake disc DTV measurement device of claim 1, wherein: the outside of the middle connecting plate of the U-shaped measuring body (5) is integrally fixed with a sleeve (51), the axis of the sleeve (51) is perpendicular to the middle connecting plate, the first support (10) is of a U-shaped structure, a rotating shaft (7) is arranged between the two side walls of the first support (10), the two ends of the rotating shaft (7) penetrate through the sleeve (51) and are fixed at the free ends of the two side walls of the first support (10) through a first bolt (13), the size of the sleeve (51) corresponds to the rotating and drawing length between the first support (10), and the U-shaped measuring body (5) can freely swing around the zero clearance of the rotating shaft (7).
4. The brake disc DTV measurement device of claim 1, wherein: the end part of a side arm of the U-shaped measuring body (5) for mounting the dial indicator (14) is provided with an integrated U-shaped chuck (52), semicircular grooves used for wrapping gauge rods of the dial indicator (14) are formed in the chuck (52) and the side arm respectively and oppositely, corresponding internal thread holes are formed in the chuck (52) above the semicircular grooves and the side arm respectively, and the gauge rods of the dial indicator (14) are locked by bolts II (15) after being inserted into the semicircular grooves.
5. The brake disc DTV measurement device of claim 1, wherein: open at the middle part of axial adjustment bracing piece (11) has square groove, and the outside of support (10) middle part connecting plate is fixed with square boss, and square boss can slide in square groove, and the lower terminal surface of square boss is fixed at the middle part of support (10) middle part connecting plate, and open the up end of square boss has the internal thread hole, and square boss passes behind the square groove and dies support (10) lock with bolt five (9) and cushion.
6. The brake disc DTV measurement device of claim 1, wherein: open at the middle part of radial regulation bracing piece (8) has the square groove that extends along length direction, the tip that axial regulation bracing piece (11) and radial regulation bracing piece (8) are connected is provided with integrative bracing piece connecting plate, the bracing piece connecting plate is perpendicular with axial regulation bracing piece (11), the outside of bracing piece connecting plate is integrative to be fixed with can be at the square inslot gliding square boss, the bracing piece connecting plate is opened with the middle part of square boss has female screw thread through-hole, square boss passes behind the square groove and dies axial regulation bracing piece (11) lock with six (6) of bolt and cushion.
7. The brake disc DTV measurement device of claim 1, wherein: open at the middle part of horizontal regulation bracing piece (2) has the square groove that extends along its length direction, the lower extreme lateral surface of radial regulation bracing piece (8) is fixed with integrative square boss that can slide in square groove, open at the middle part of square boss has the internal thread hole that runs through square boss and radial regulation bracing piece (8), square boss passes behind the square groove and dies radial regulation bracing piece (8) lock on horizontal regulation bracing piece (2) with seven (3) of bolt and cushion.
8. The brake disc DTV measurement device of claim 7, wherein: the end of the transverse adjusting support rod (2) outside the square groove on the transverse adjusting support rod (2) is provided with an internal threaded hole, a third bolt (1) is assembled in the internal threaded hole, a fourth bolt (4) is installed in one end, far away from the third bolt (1), of the transverse adjusting support rod (2) above the groove, the radial adjusting support rod (8) is located between the third bolt (1) and the fourth bolt (4), and the position of the fourth bolt (4) can be adjusted in the square groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011033927.7A CN112050716A (en) | 2020-09-27 | 2020-09-27 | Brake disc DTV measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011033927.7A CN112050716A (en) | 2020-09-27 | 2020-09-27 | Brake disc DTV measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN112050716A true CN112050716A (en) | 2020-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011033927.7A Pending CN112050716A (en) | 2020-09-27 | 2020-09-27 | Brake disc DTV measuring device |
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| Country | Link |
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| CN (1) | CN112050716A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112781467A (en) * | 2021-01-08 | 2021-05-11 | 堀扬精密量仪(上海)有限公司 | Fire control steel bottle inner coating detection device |
| CN112833746A (en) * | 2021-01-08 | 2021-05-25 | 中国船舶重工集团公司第七0七研究所 | Special detection tool for ball seat part and use method |
-
2020
- 2020-09-27 CN CN202011033927.7A patent/CN112050716A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112781467A (en) * | 2021-01-08 | 2021-05-11 | 堀扬精密量仪(上海)有限公司 | Fire control steel bottle inner coating detection device |
| CN112833746A (en) * | 2021-01-08 | 2021-05-25 | 中国船舶重工集团公司第七0七研究所 | Special detection tool for ball seat part and use method |
| CN112781467B (en) * | 2021-01-08 | 2022-09-27 | 昌兴科技(长兴)有限公司 | Fire control steel bottle inner coating detection device |
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