CN107687835B - Multi-row floating contact type coaxiality detection device for steering knuckle - Google Patents
Multi-row floating contact type coaxiality detection device for steering knuckle Download PDFInfo
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- CN107687835B CN107687835B CN201710885570.7A CN201710885570A CN107687835B CN 107687835 B CN107687835 B CN 107687835B CN 201710885570 A CN201710885570 A CN 201710885570A CN 107687835 B CN107687835 B CN 107687835B
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- contact
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
- G01B21/24—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes for testing alignment of axes
Abstract
The invention relates to the technical field of steering knuckle processing, in particular to a multi-row floating contact type coaxiality detection device for a steering knuckle, which comprises an indicating meter and a detection rod, wherein the detection rod comprises a circular sleeve rod, a rotating detection head and a connecting rod, the circular sleeve rod is used for extending into one main pin hole, the rotating detection head is used for extending into the other main pin hole, the connecting rod is connected with the sleeve rod and the rotating detection head, two rows of contacts are uniformly distributed on the circumference of the sleeve rod, at least one contact is arranged on the side surface of the rotating detection head, the contacts are positioned on the same cylindrical surface, the outer part of each contact protrudes out of the sleeve rod or the outer part of the rotating detection head, the inner part of each contact is telescopically connected with a sensor, the sensor is used for detecting the radial displacement of the contacts along with the rotation of the rotating detection head, the sensor is electrically, through the shape of two king pin hole inner walls of fit, obtain king pin hole axiality testing result fast, convenient to use to it is accurate to measure.
Description
Technical Field
The invention relates to the technical field of steering knuckle processing, in particular to a multi-row floating contact type coaxiality detection device for a steering knuckle.
Background
The steering knuckle is one of important parts in an automobile steering axle, and can enable an automobile to stably run and sensitively transmit the running direction. The steering knuckle is used for transmitting and bearing the front load of the automobile, supporting and driving the front wheel to rotate around the main pin so as to steer the automobile. The ear of the knuckle has two coaxial holes, called king pin holes, for the installation of king pins, which are connected to the fist-shaped parts at both ends of the front axle through the king pins, so that the front wheel can be deflected around the king pins by a certain angle to steer the car. Therefore, the requirement on the machining size of the main pin hole is very high, one requirement is that the coaxiality error of the two main pin holes is required to be smaller than a certain value, but due to the complex structure of the knuckle ear part, the tool for machining the hole generally needs to be longer in extension length, and the machining is a difficult problem in the machining of the knuckle. Therefore, the coaxiality of the main pin holes needs to be detected to ensure that the main pin holes meet the requirements.
The existing coaxiality measurement is generally performed by a dial indicator, and specifically comprises the following steps: placing a part to be measured on two equal-height blade-shaped V-shaped blocks, installing a dial indicator, an indicator seat and an indicator frame, adjusting the dial indicator to enable a measuring head to be in contact with the measured outer surface of the workpiece, enabling the workpiece to rotate slowly and uniformly for a circle with 1-2 circles of compression, observing the fluctuation of an indicator of the dial indicator, and taking half of the difference value between the maximum reading and the minimum reading as the coaxiality error of the section. The different sections are measured according to the method, and the maximum value (absolute value) in half of the difference between the maximum reading and the minimum reading measured by each section is taken as the coaxiality error of the part.
The detection method is complex to operate, two main pin holes of the steering knuckle are difficult to detect, and a tool capable of rapidly detecting the coaxiality of the two main pin holes of the steering knuckle is lacked in the prior art.
Disclosure of Invention
The invention aims to provide a multi-row floating contact type coaxiality detection device for a steering knuckle, which is scientific in structure and can be used for rapidly detecting the coaxiality of two main pin holes of the steering knuckle, aiming at overcoming the defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a multi-row floating contact type coaxiality detection device for a steering knuckle comprises an indicating gauge and a detection rod, the detection rod comprises a round loop rod extending into one main pin hole, a rotary detection head extending into the other main pin hole, and a connecting rod connecting the loop rod and the rotary detection head, two rows of elastically telescopic first contacts are uniformly distributed on the circumference of the loop bar, at least one elastically telescopic second contact is arranged on the side surface of the rotary detection head, the first contact and the second contact are positioned on the same cylindrical surface, the outer parts of the first contact and the second contact protrude out of the loop bar or the rotation detection head, the inside of the second contact is connected with a sensor, the sensor is used for detecting radial displacement of the second contact along with rotation of the rotation detection head, and the sensor is connected with the indicating meter.
Preferably, the sensor is a probe of the indicator gauge and a mandrel arranged inside the detection rod, and the mandrel presses the probe along with the extension and contraction of the second contact.
Preferably, the sensor is a displacement sensor, and the displacement sensor is electrically connected with the indicating meter.
Preferably, a displacement sensor for detecting the displacement of the first contact is arranged in the loop bar, and the displacement sensor is electrically connected with the indicating meter.
Preferably, the connecting rod is a telescopic rod with adjustable length.
Preferably, one end of the connecting rod can rotatably penetrate through the loop bar to be connected with the indicating meter, and the connecting rod is fixedly connected with the rotation detection head.
Preferably, at least one protrusion is disposed on a side surface of the rotation detection head, and the contact of the rotation detection head is disposed on the protrusion.
Preferably, the side of the rotary detection head is provided with N protruding parts, N is a positive integer, the side of the rotary detection head is provided with N or 2 × N contacts, and each protruding part is provided with 1 or 2 contacts.
Preferably, the indicating meter or the connecting rod is provided with an encoder for detecting the rotation angle of the connecting rod, and the encoder is electrically connected with the indicating meter.
Preferably, one side of the loop bar, which is close to the indicator, is provided with a limiting boss, and the diameter of the limiting boss is larger than that of the loop bar.
The invention has the beneficial effects that: the multi-row floating contact type coaxiality detection device for the steering knuckle can extend into the main pin hole of the steering knuckle, the sleeve rod extends into the first main pin hole, the rotary detection head extends into the second main pin hole, the sleeve rod and the floating contact on the side face of the rotary detection head are abutted against the inner wall of the main pin hole under the action of the spring, and the rotary detection head can contact the inner walls of the second main pin hole at different positions after rotating, so that the shapes of the inner walls of the two main pin holes can be fitted simultaneously, the main pin hole coaxiality detection result can be obtained quickly, and the multi-row floating contact type coaxiality detection device is convenient to use.
Secondly, can use the multiseriate contact, for example first king pin hole uses two contacts of being listed as, and the second king pin hole uses one or multiseriate contact, can detect a plurality of periphery simultaneously to, use two contacts in the first king pin hole, solved how to set for the loop bar diameter promptly, so that loop bar and king pin hole reach coaxial purpose, also make even the loop bar takes place the slight slope, also can correct through the position change numerical value of contact.
Drawings
Fig. 1 is a schematic structural view of a multi-row floating contact type coaxiality detection apparatus for a knuckle according to the present invention.
Fig. 2 is a schematic structural view of the rotary detection head of the present invention.
Fig. 3 is a schematic view of the structure of the contact displacement change in the rotary detection head of the present invention.
Description of reference numerals:
1-indicator 2-loop bar
3-rotation detecting head 4-connecting rod
5-first contact 6-second contact
7-limiting boss.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific examples, which are not intended to limit the scope of the invention.
As shown in fig. 1, 2 and 3, the multi-row floating contact type coaxiality detection device for the steering knuckle of the present embodiment includes an indicator 1 and a detection rod, wherein the detection rod includes a circular loop bar 2 for extending into one main pin hole, a rotary detection head 3 for extending into another main pin hole, and a connection rod 4 for connecting the loop bar 2 and the rotary detection head 3, two rows of elastically stretchable first contacts 5 are uniformly distributed on the circumference of the loop bar 2, at least one elastically stretchable second contact 6 is arranged on a side surface of the rotary detection head 3, the first contacts 5 and the second contacts 6 are located on the same cylindrical surface, the outer portions of the first contacts 5 and the second contacts 6 protrude out of the loop bar 2 or out of the rotary detection head 3, the inner portion of the second contact 6 is connected with a sensor, the sensor is used for detecting radial displacement of the second contacts 6 along with rotation of the rotary detection head 3, the sensor is connected with the indicating table 1.
The multi-row floating contact type coaxiality detection device for the steering knuckle can extend into a main pin hole of the steering knuckle, wherein the sleeve rod 2 extends into a first main pin hole, the rotary detection head 3 extends into a second main pin hole, floating contacts (a first contact 5 and a second contact 6) on the side surfaces of the sleeve rod 2 and the rotary detection head 3 are abutted against the inner wall of the main pin hole under the action of the spring, the second contact 6 can contact the inner wall of the second main pin hole at different positions after the rotary detection head 3 rotates to fit the shape of the inner wall of the main pin hole, the first contacts 5 are distributed on the circumference to play a centering role, the sleeve rod 2 is ensured to be positioned at the center position of the main pin hole, the main pin hole coaxiality detection result can be quickly obtained, and the use is convenient.
To facilitate the collection of the displacement data of the second contact 6, a probe of the indicating meter can be used, and this embodiment can adopt an implementation mode that: the sensor is the probe of the indicator table 1 and a mandrel arranged in the detection rod, the mandrel presses the probe along with the extension and contraction of the second contact 6, as shown in fig. 3, the second contact 6 penetrates through the mandrel, the contact surface of the second contact 6 and the mandrel is an inclined surface, and when the second contact 6 moves radially, the mandrel moves axially.
Yet another embodiment is: the displacement information can be transmitted to the indicating gauge 1 by using a displacement sensor which is not a probe but a built-in displacement sensor and is electrically connected with the indicating gauge 1.
Further, the displacement data of the first contact 5 can be obtained in the same manner, a displacement sensor for detecting the displacement of the first contact 5 is arranged in the loop bar 2, and the displacement sensor is electrically connected with the indicating meter 1. After the displacement data of the first contact 5 and the second contact 6 are obtained, a plurality of circumferential surfaces can be detected simultaneously, and two rows of contacts are used in the first main pin hole, so that the problem of how to set the diameter of the loop bar 2 is solved, the loop bar 2 and the main pin hole are coaxial, and the loop bar 2 can be corrected through the position change value of the contacts even if slightly inclined.
More importantly, the detection device of the invention can be used in a plurality of ways, for example, any one main pin hole (even other holes) can be detected quickly by directly using 2 rows of first contacts on the sleeve 2, and the roundness, the diameter and the like of the main pin hole can be detected.
Furthermore, the connecting rod 4 is a telescopic rod with adjustable length, and can be used for detecting steering knuckles with different distances between two main pin holes, and also can adjust the position of the second contact 6 to detect the coaxiality of different positions of the main pin holes.
Furthermore, one end of the connecting rod 4 can rotatably penetrate through the loop bar 2 to be connected with the indicating meter 1, and the connecting rod 4 is fixedly connected with the rotation detecting head 3.
Further, at least one protrusion is disposed on a side surface of the rotation detection head 3, and a contact of the rotation detection head 3 is disposed on the protrusion.
Furthermore, the side of the rotation detection head 3 is provided with N protruding parts, N is a positive integer, the side of the rotation detection head 3 is provided with N or 2 × N contacts 5, and each protruding part is provided with 1 or 2 contacts 5.
Furthermore, instruction list 1 or connecting rod 4 are provided with and are used for detecting connecting rod 4 turned angle's encoder, the encoder with instruction list 1 electricity is connected, can learn to rotate through this encoder and detect the first 3 pivoted angles of detection.
Furthermore, one side of the loop bar 2 close to the indicator 1 is provided with a limiting boss 6, and the diameter of the limiting boss 6 is larger than that of the loop bar 2.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. A multiseriate floating contact formula axiality detection device for knuckle, its characterized in that: the detection device comprises an indicating meter (1) and a detection rod, wherein the detection rod comprises a circular sleeve rod (2) extending into one main pin hole, a rotary detection head (3) extending into the other main pin hole, and a connecting rod (4) connected with the sleeve rod (2) and the rotary detection head (3), two rows of elastically telescopic first contacts (5) are uniformly distributed on the circumference of the sleeve rod (2), at least one elastically telescopic second contact (6) is arranged on the side surface of the rotary detection head (3), the first contacts (5) and the second contacts (6) are positioned on the same cylindrical surface, the outer parts of the first contacts (5) and the second contacts (6) protrude out of the sleeve rod (2) or the outer part of the rotary detection head (3), a displacement sensor for detecting the displacement of the first contacts (5) is arranged in the sleeve rod (2), and the displacement sensor is electrically connected with the indicating meter (1), the inside of the second contact (6) is connected with a sensor, the sensor is used for detecting the radial displacement of the second contact (6) along with the rotation of the rotation detection head (3), and the sensor is connected with the indicating meter (1).
2. The multi-row floating contact coaxiality detection apparatus for a knuckle according to claim 1, wherein: the sensor is a probe of the indicator (1) and a mandrel arranged in the detection rod, and the mandrel presses the probe along with the extension and contraction of the second contact (6).
3. The multi-row floating contact coaxiality detection apparatus for a knuckle according to claim 1, wherein: the sensor is a displacement sensor, and the displacement sensor is electrically connected with the indicating meter (1).
4. The multi-row floating contact coaxiality detection apparatus for a knuckle according to claim 1, wherein: the connecting rod (4) is a telescopic rod with adjustable length.
5. The multi-row floating contact coaxiality detection apparatus for a knuckle according to claim 1, wherein: one end of the connecting rod (4) can rotatably penetrate through the loop bar (2) to be connected with the indicating meter (1), and the connecting rod (4) is fixedly connected with the rotation detecting head (3).
6. The multi-row floating contact coaxiality detection apparatus for a knuckle according to claim 5, wherein: the side of the rotary detection head (3) is provided with at least one protruding part, and the contact of the rotary detection head (3) is arranged on the protruding part.
7. The multi-row floating contact coaxiality detection apparatus for a knuckle according to claim 6, wherein: the side of the rotary detection head (3) is provided with N protruding parts, N is a positive integer, the side of the rotary detection head (3) is provided with N or 2N contacts (6), and each protruding part is provided with 1 or 2 contacts (6).
8. The multi-row floating contact coaxiality detection apparatus for a knuckle according to claim 1, wherein: the indicating meter (1) or the connecting rod (4) is provided with an encoder for detecting the rotation angle of the connecting rod (4), and the encoder is electrically connected with the indicating meter (1).
9. The multi-row floating contact coaxiality detection apparatus for a knuckle according to claim 1, wherein: one side of the loop bar (2) close to the indicator (1) is provided with a limiting boss (7), and the diameter of the limiting boss (7) is larger than that of the loop bar (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710885570.7A CN107687835B (en) | 2017-09-27 | 2017-09-27 | Multi-row floating contact type coaxiality detection device for steering knuckle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710885570.7A CN107687835B (en) | 2017-09-27 | 2017-09-27 | Multi-row floating contact type coaxiality detection device for steering knuckle |
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| Publication Number | Publication Date |
|---|---|
| CN107687835A CN107687835A (en) | 2018-02-13 |
| CN107687835B true CN107687835B (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710885570.7A Active CN107687835B (en) | 2017-09-27 | 2017-09-27 | Multi-row floating contact type coaxiality detection device for steering knuckle |
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| CN (1) | CN107687835B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108571942B (en) * | 2018-06-29 | 2023-09-15 | 广西玉柴机器股份有限公司 | Cylindricity detection device for engine cylinder sleeve |
| CN112985344B (en) * | 2021-04-13 | 2022-11-22 | 贵州黎阳国际制造有限公司 | Internal thread coaxiality detection device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3114207A (en) * | 1960-06-10 | 1963-12-17 | Eisele Andrew | Dual bore alignment and concentricity gauge |
| US3732624A (en) * | 1971-10-20 | 1973-05-15 | Dunn Tool Co | Spindle for dial indicator gauge |
| JP3268200B2 (en) * | 1996-06-14 | 2002-03-25 | 三菱重工業株式会社 | Pipe bore diameter measurement probe |
| CN201392171Y (en) * | 2009-04-23 | 2010-01-27 | 上海汽车变速器有限公司 | Scanning gauge for detecting hole |
| CN103372666B (en) * | 2012-04-26 | 2015-05-13 | 昆山江锦机械有限公司 | Processing method and concentricity measuring tool for coaxial hole of diesel engine oil supply unit casing |
| CN202719963U (en) * | 2012-06-06 | 2013-02-06 | 沈阳飞机工业（集团）有限公司 | Self-centering integrated measuring head device of hole series part coaxiality measurement |
| CN205279920U (en) * | 2015-12-08 | 2016-06-01 | 山西北方机械制造有限责任公司 | Deep hole internal diameter alignment detection device |
| CN206311052U (en) * | 2017-01-06 | 2017-07-07 | 苏康 | A kind of coaxality measuring mechanism in adjustable hole |
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