CN105716510A - Device for comprehensively detecting planeness and roundness of rear axle passive gear - Google Patents
Device for comprehensively detecting planeness and roundness of rear axle passive gear Download PDFInfo
- Publication number
- CN105716510A CN105716510A CN201610212309.6A CN201610212309A CN105716510A CN 105716510 A CN105716510 A CN 105716510A CN 201610212309 A CN201610212309 A CN 201610212309A CN 105716510 A CN105716510 A CN 105716510A
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- lever
- flatness
- support
- pull bar
- detecting
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Classifications
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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
- G01B5/28—Measuring arrangements characterised by the use of mechanical techniques for measuring roughness or irregularity of surfaces
-
- 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
- G01B5/20—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures
- G01B5/201—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures for measuring roundness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to a device for comprehensively detecting the planeness and roundness of a rear axle passive gear. The device comprises a positioning block roundness detecting slide rail and a planeness detecting slide rail connected to a support, wherein a meter stand is connected to the roundness detecting slide rail, a roundness detecting meter and a first pull rod are respectively connected to the meter stand, a lever seat and a second pull rod are connected to the planeness detecting slide rail, the first pull rod and the second pull rod are locked and fixed to the support through corresponding locking devices, the lower side of the lever seat is in swinging connection with a detecting lever through supporting rods, the inner sides of the supporting rods extend out of the lever seat, a detecting ball for detection is arranged on the upper side of the inside of the detecting lever, and a planeness detecting meter with a meter pointer in contact with the upper surface of the detecting lever is installed on the outer side of the lever seat. The device had the advantages that the device is suitable for online detection, is elaborate in design, easy to carry, small in labor amount, simple in operation, easy to use, accurate in measurement, low in cost and good in universality, makes gear replacement rapid and convenient and meets the planeness detection requirements of various parts.
Description
Technical field
The present invention relates to gear testing field, particularly to a kind of back axle comprehensive detection device by tooth flatness and circularity.
Background technology
When automobile axle driven gear carries out the machining of tooth base before the heat treatment, set according to processor, bottom surface should be plane, and after Overheating Treatment high-temperature carburizing quenches, due to gear material, carburization process, the reasons such as quenching, unavoidably cause and deformed by bottom surface after tooth heat treatment, gear lapping can be carried out after driven gear heat treatment, the operations such as SFT, these working procedure processing are all with Internal hole positioning, bottom surface is supporting surface, end product is reflected in and can be there are differences with being assembled to the Contact Tooth print subtracted under shelly state by the contact trace on tooth, because bottom surface can be subject to the pulling force of attachment bolt and pulls by force and flatten during driven gear assembling, cause that producing qualified Gear Contact trace can offset, so will affect the precision of gear, easily cause early mill, beat tooth, noise is big and reduces service life of gear etc..
Traditional is be positioned over by driven gear on marble flat board to driven gear flatness detection mode, then uses clearance gauge that inner ring gear and outer ring are detected for one week, the maximum data of record inner ring and outer ring, and detection data are accurate not, complex operation.
Summary of the invention
The invention aims to solve present stage at back axle by the detection complex operation of tooth flatness and circularity, the shortcomings such as detection data are accurate not, and a kind of back axle proposed is by the comprehensive detection device of tooth flatness and circularity.
To achieve these goals, present invention employs following technical scheme:
A kind of back axle is by the comprehensive detection device of tooth flatness and circularity, it is characterized in that: include support, upper side at described support connects locating piece, opening slot to make way it is provided with in locating piece, connect a roundness measurement slide rail on the bracket, support is also at least connected with a flatness detection slide rail, the slide block of described roundness measurement slide rail connects dial framework, dial framework is correspondingly arranged in described opening slot to make way, described dial framework connects roundness measurement table and the first pull bar respectively, first pull bar is locked on the bracket by locking device, the upside of the slide block detecting slide rail in described flatness connects lever seat, it is provided with lever mounting groove in the downside of described lever seat, connection detection lever is swung by pole at described lever mounting groove, lever seat is stretched out in the inner side of described detection lever, outside mounting plane degree detection table at described lever seat, upper surface outside the indicator of described flatness detection table and described detection lever, upside within described detection lever is provided with a detection ball for detecting, the slide block that described flatness detects slide rail is also connected with the second pull bar, described second pull bar is locked on the bracket also by locking device.
On the basis of technique scheme, it is possible to have technical scheme further below:
Described support includes fixing plate, described fixing plate is provided with one group of first mounting groove, side below described fixing plate is symmetrical arranged two the first support bars, and the opposite side below fixing plate is symmetrical arranged two the second support bars, and the length of described first support bar is more than the length of the second support bar.
Install one on the bracket for placing by the platform of tooth, platform is provided with one group of second mounting groove.
Described locating piece is the platy structure that lateral surface is provided with circular arc.
Described circular arc is semi arch.
Described locking device includes the latch being fixedly connected on described support, described latch is provided with the through hole for installing described first pull bar or the second pull bar, it is additionally provided with opening from described through hole to the side of latch, connects at described opening part and be used for locking the first pull bar or the second draw lever locking part.
On described first pull bar and the second pull bar, equal clamping is for spacing spacing jump ring.
Described roundness measurement table and flatness detection table all adopt dial gauge.
It is an advantage of the current invention that: this device is suitable for on-line checking, and it has deft design, it is easy to carrying, the amount of labour is little, facilitate rapidly with gear changing, simple to operate, it is easy to use, measure accurately, cost is low, it is adaptable to the requirement that flatness is detected by various parts, and versatility is good.
Accompanying drawing explanation
Fig. 1 is the basic structure schematic diagram of the present invention；
Fig. 2 is the sectional view of Fig. 1.
Detailed description of the invention
In order to make the present invention clearly understand, below in conjunction with accompanying drawing, this device being described in detail, specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
As depicted in figs. 1 and 2, a kind of back axle provided by the invention is by the comprehensive detection device of tooth flatness and circularity, it is characterized in that: include support 1, described support 1 includes a square fixing plate 19, described fixing plate 19 is provided with the first mounting groove 19a of three rectangular configuration, two of which the first mounting groove 19a is arranged in same perpendicular, and the two the first mounting groove 19a is symmetricly set on described fixing plate 19, another first mounting groove 19a is arranged in the perpendicular perpendicular with the first two.Side below described fixing plate 19 is symmetrical arranged two the first support bars 20, fixing plate 19 opposite side below is symmetrical arranged two the second support bars 21, the length of described first support bar 20 is more than the length of the second support bar 21, and said two the first support bar 20 and two the second support bars 21 are separately positioned on four corners of fixing plate 19.
Described support 1 is connected by screw one for placing by the platform 3 of tooth, described platform 3 is a circular slab, platform is provided with three the second mounting groove 3a, each described second mounting groove 3a is all correspondingly arranged at the top of corresponding first mounting groove 19a, and the width of the second mounting groove 3a is more than the first mounting groove 19a.
On the upside of described platform 3 centrally through screw connect a locating piece 2, described locating piece 2 is for fixing by tooth, described locating piece 2 is provided with the platy structure of circular arc 2b for lateral surface, described circular arc 2b is semi arch, the opening being provided with U-shaped opening slot to make way 2a, a described slot to make way 2a in locating piece 2 is arranged on the home position of locating piece 2.
Owing to gear kind is more, driven gear internal diameter magnitude range is bigger, so the locating piece 2 according to the big little makings different-diameter size of driven gear internal diameter produced, a kind of internal diameter size makes a part block of remodeling, when detected needed by tooth to detect time, the locating piece 2 of replaceable corresponding internal diameter size, can realize workpiece and be accurately positioned.Locating piece 2 and described platform 3 are positioned by two alignment pins and four bolts and to be connected, with changing conveniently, and processing ease.
Described support 1 is arranged in the first mounting groove 19a in same perpendicular and connects flatness detection slide rail 5 each through screw, in another first mounting groove 19a, be connected by screw roundness measurement slide rail 4.
The slide block of described roundness measurement slide rail 4 connects dial framework 6, dial framework 6 is correspondingly arranged in described opening slot to make way 2a, described dial framework 6 is a T-shaped plate, a roundness measurement table 7 is connected in the upside of described dial framework 6, a through hole it is provided with in the upside of dial framework 6, the mark post of roundness measurement table 7 is arranged in through hole and is fixed by screw, the dial plate of described roundness measurement table 7 and indicator are separately positioned on the both sides of dial framework 6, and the dial plate of roundness measurement table 7 is correspondingly arranged in described opening slot to make way 2a, described roundness measurement table 7 adopts dial gauge.In the downside of described dial framework 6 also by threaded first pull bar 8, described first pull bar 8 is a circular pin, it is provided with screw rod in one end of the first pull bar 8, the other end is provided with spheroidal handle, the first pull bar 8 described fixing corresponding sidewall of plate 19 of traverse, being arranged in corresponding first mounting groove 19a, the outside clamping at described first pull bar 8 is used for spacing spacing jump ring 13.First pull bar 8 is locked on described support 1 by locking device 9, described locking device 9 includes the latch 10 of a rectangle, latch 10 is fixed by screws on the fixing corresponding sidewall of plate 19, described latch 10 is provided with the through hole for installing described first pull bar 8 or the second pull bar 12, side from described through hole to latch 10 is additionally provided with opening, connecting at described opening part and be used for locking the first pull bar 8 locking member 11, described locking member 11 adopts the bolt with spanner.
The upside of the slide block detecting slide rail 5 in described flatness connects lever seat 14, described lever seat 14 is a rectangular slab, it is provided with lever mounting groove 14a in the downside of described lever seat 14, described mounting groove 14a is a U-shaped open slot, connecting detection lever 16 at described lever mounting groove 14a by pole 15, detection lever 16 can swing in lever mounting groove 14a around pole 15.Outside mounting plane degree detection table 17 at described lever seat 14, described flatness detection table 17 adopts dial gauge, upper surface outside the indicator of described flatness detection table 17 and described detection lever 16, lever seat 14 is stretched out in the inner side of described detection lever 16, upside within described detection lever 16 is provided with a detection ball 18 for detecting, being also connected with the second pull bar 12 on the slide block that described flatness detects slide rail 5, described second pull bar 12 is locked on described support 1 also by locking device 9.On described second pull bar 12, equal clamping is for spacing spacing jump ring 13.
This device is to be undertaken detecting by the flatness of tooth by lever principle, it is placed on described platform 3 by tooth by described locating piece 2, the flatness < 0.005mm of plane on platform 3, before detection, first the detection ball 18 of the detection lever 16 of both sides is arranged on corresponding to the diverse location inside and outside tooth, one is used for detecting by the flatness of tooth inner ring, and another is surveyed the flatness of outer ring for detecting by tooth.Described detection ball 18 adopts wolfram steel material, wear-resisting, conveniently replaced.When place by tooth time, detection ball 18 contact tested by described in tooth underrun detect lever 16 feed back on flatness detection table 17, flatness detection table 17 exist beat reading can be flatness numerical value.
This device adopts and positions from gravity mode: be designed as semi-circular shape due to locating piece 2, semicircle is only had by locating piece 2 contact area of tooth endoporus Yu location, if datum plane is horizontal plane, then workpiece location is not firm, there is situation about rocking, testing result is inaccurate, therefore this device is by arranging the first support bar 20 and the second support bar 21 that length is different, described platform 3 is obliquely installed, the angle of its inclination is 10 °, after be placed on locating piece 2 by tooth, by tooth owing to the gravity of self is subjected to the region supports power that contacts with locating piece 2, this ensure that workpiece is in stable state.
The operating procedure of this device:
A, prepare to be detected by tooth.
B, select the locating piece 2 of respective model, and be installed on platform 3.
C, select respective model checking part, be put on platform 3.
D, move that detection checking part inner ring is beated, beat and three pull bars of endoporus circularity in outer ring respectively, the suitable position that the gauge head that will measure inside and outside circle and the gauge outfit measuring endoporus circularity adjust, and lock.
E, three dial gauges zeros of checking part outer ring, inner ring and endoporus will be measured respectively.
F, take off checking part, change to be detected by tooth.
G, turn clockwise and enclosed by tooth one, record detection inner ring, outer ring, three dial gauges of endoporus are beated respectively maximum and minima.
H, the maximum of record on each table is deducted the circularity of flatness that minima is then inside and outside circle and endoporus.
I, take off by tooth.
Described checking part is according to by tooth diameter of bore and basal diameter design, and beat≤0.005mm, endoporus cylindricity≤0.002mm in checking part bottom surface.Every kind of product design one checking part, is used for the table school zero of beating to cubing before detection workpiece, it is ensured that the accuracy of detection.
Claims (8)
1. a back axle is by the comprehensive detection device of tooth flatness and circularity, it is characterized in that: include support (1), upper side at described support (1) connects locating piece (2), opening slot to make way (2a) it is provided with in locating piece (2), described support (1) one roundness measurement slide rail (4) of upper connection, support (1) is also at least connected with flatness detection slide rail (5), the slide block of described roundness measurement slide rail (4) connects dial framework (6), dial framework (6) is correspondingly arranged in described opening slot to make way (2a), described dial framework (6) connects roundness measurement table (7) and the first pull bar (8) respectively, first pull bar (8) is locked on described support (1) by locking device (9), the upside of the slide block detecting slide rail (5) in described flatness connects lever seat (14), it is provided with lever mounting groove (14a) in the downside of described lever seat (14), connection detection lever (16) is swung by pole (15) described lever mounting groove (14a), lever seat (14) is stretched out in the inner side of described detection lever (16), outside mounting plane degree detection table (17) at described lever seat (14), the upper surface in the indicator of described flatness detection table (17) and described detection lever (16) outside, the upside that described detection lever (16) is internal is provided with a detection ball (18) for detecting, the slide block that described flatness detects slide rail (5) is also connected with the second pull bar (12), described second pull bar (12) is locked on described support (1) also by locking device (9).
2. a kind of back axle according to claim 1 is by the comprehensive detection device of tooth flatness and circularity, it is characterized in that: described support (1) includes fixing plate (19), described fixing plate (19) is provided with one group of first mounting groove (19a), it is symmetrical arranged two the first support bars (20) in the following side of described fixing plate (19), fixing plate (19) opposite side below is symmetrical arranged two the second support bars (21), and the length of described first support bar (20) is more than the length of the second support bar (21).
3. a kind of back axle according to claim 1 and 2 is by the comprehensive detection device of tooth flatness and circularity, it is characterised in that: the upper installation of described support (1) for placing by the platform (3) of tooth, platform is provided with one group of second mounting groove (3a).
4. a kind of back axle according to claim 1 is by the comprehensive detection device of tooth flatness and circularity, it is characterised in that: described locating piece (2) is provided with the platy structure of circular arc (2b) for lateral surface.
5. a kind of back axle according to claim 4 is by the comprehensive detection device of tooth flatness and circularity, it is characterised in that: described circular arc (2b) is semi arch.
6. a kind of back axle according to claim 1 is by the comprehensive detection device of tooth flatness and circularity, it is characterized in that: described locking device (9) includes the latch (10) being fixedly connected on described support (1), described latch (10) is provided with the through hole for installing described first pull bar (8) or the second pull bar (12), side from described through hole to latch (10) is additionally provided with opening, connects at described opening part and is used for locking the first pull bar (8) or the second pull bar (12) locking member (11).
7. a kind of back axle according to claim 1 or 6 is by the comprehensive detection device of tooth flatness and circularity, it is characterised in that: in the upper equal clamping of described first pull bar (8) and the second pull bar (12) for spacing spacing jump ring (13).
8. a kind of back axle according to claim 1 or 6 is by the comprehensive detection device of tooth flatness and circularity, it is characterised in that: described roundness measurement table (7) and flatness detection table (17) all adopt dial gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610212309.6A CN105716510B (en) | 2016-04-07 | 2016-04-07 | A kind of back axle is by the comprehensive detection device of tooth flatness and circularity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610212309.6A CN105716510B (en) | 2016-04-07 | 2016-04-07 | A kind of back axle is by the comprehensive detection device of tooth flatness and circularity |
Publications (2)
| Publication Number | Publication Date |
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| CN105716510A true CN105716510A (en) | 2016-06-29 |
| CN105716510B CN105716510B (en) | 2018-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610212309.6A Active CN105716510B (en) | 2016-04-07 | 2016-04-07 | A kind of back axle is by the comprehensive detection device of tooth flatness and circularity |
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| CN (1) | CN105716510B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106395214A (en) * | 2016-11-16 | 2017-02-15 | 新昌县海格赛斯贸易有限公司 | Logistics packing case fixing and locking device |
| CN106595456A (en) * | 2017-02-07 | 2017-04-26 | 上海交大中京锻压有限公司 | Flatness and coaxiality jumpiness composite gauge of automobile steering system triangular flange |
| CN106767355A (en) * | 2016-11-30 | 2017-05-31 | 河南机电高等专科学校 | Automobile axle is by tooth flatness checking device |
| CN109073351A (en) * | 2017-03-26 | 2018-12-21 | 株式会社阿迪泰克工程 | Flatness measuring method and pin method for adjusting height |
| CN109668501A (en) * | 2019-01-25 | 2019-04-23 | 佛山职业技术学院 | A kind of surface roughometer bracket and measuring device for surface roughness |
| CN114001632A (en) * | 2021-11-02 | 2022-02-01 | 中国科学院光电技术研究所 | Flatness detection device and detection method for large ultra-precise annular plane |
| CN114562926A (en) * | 2020-11-27 | 2022-05-31 | 北京福田康明斯发动机有限公司 | Crankshaft oil seal press-fitting depth and jumping detection tool |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6446496B1 (en) * | 1999-11-01 | 2002-09-10 | Mitutoyo Corporation | Surface texture measuring instrument |
| CN201615737U (en) * | 2010-02-09 | 2010-10-27 | 苏州工业园区艺达精密机械有限公司 | Multifunctional detector |
| CN105066846A (en) * | 2015-08-11 | 2015-11-18 | 苏州鸿普精密模具有限公司 | Detection device of automobile window-lifting guide rail test machine |
| CN205642265U (en) * | 2016-04-07 | 2016-10-12 | 合肥美桥汽车传动及底盘系统有限公司 | Rear axle is by comprehensive testing device of tooth plane degree and circularity |
-
2016
- 2016-04-07 CN CN201610212309.6A patent/CN105716510B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6446496B1 (en) * | 1999-11-01 | 2002-09-10 | Mitutoyo Corporation | Surface texture measuring instrument |
| CN201615737U (en) * | 2010-02-09 | 2010-10-27 | 苏州工业园区艺达精密机械有限公司 | Multifunctional detector |
| CN105066846A (en) * | 2015-08-11 | 2015-11-18 | 苏州鸿普精密模具有限公司 | Detection device of automobile window-lifting guide rail test machine |
| CN205642265U (en) * | 2016-04-07 | 2016-10-12 | 合肥美桥汽车传动及底盘系统有限公司 | Rear axle is by comprehensive testing device of tooth plane degree and circularity |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106395214A (en) * | 2016-11-16 | 2017-02-15 | 新昌县海格赛斯贸易有限公司 | Logistics packing case fixing and locking device |
| CN106395214B (en) * | 2016-11-16 | 2018-08-21 | 镇江兴港国际物流有限公司 | A kind of logistics container locking device |
| CN106767355A (en) * | 2016-11-30 | 2017-05-31 | 河南机电高等专科学校 | Automobile axle is by tooth flatness checking device |
| CN106595456A (en) * | 2017-02-07 | 2017-04-26 | 上海交大中京锻压有限公司 | Flatness and coaxiality jumpiness composite gauge of automobile steering system triangular flange |
| CN109073351A (en) * | 2017-03-26 | 2018-12-21 | 株式会社阿迪泰克工程 | Flatness measuring method and pin method for adjusting height |
| CN109073351B (en) * | 2017-03-26 | 2021-06-04 | 株式会社阿迪泰克工程 | Flatness measuring method and pin height adjusting method |
| CN109668501A (en) * | 2019-01-25 | 2019-04-23 | 佛山职业技术学院 | A kind of surface roughometer bracket and measuring device for surface roughness |
| CN109668501B (en) * | 2019-01-25 | 2023-11-07 | 佛山职业技术学院 | Surface roughness appearance support and surface roughness measuring device |
| CN114562926A (en) * | 2020-11-27 | 2022-05-31 | 北京福田康明斯发动机有限公司 | Crankshaft oil seal press-fitting depth and jumping detection tool |
| CN114562926B (en) * | 2020-11-27 | 2023-11-28 | 北京福田康明斯发动机有限公司 | Crankshaft oil seal press fitting depth and runout detection tool |
| CN114001632A (en) * | 2021-11-02 | 2022-02-01 | 中国科学院光电技术研究所 | Flatness detection device and detection method for large ultra-precise annular plane |
| CN114001632B (en) * | 2021-11-02 | 2023-09-19 | 中国科学院光电技术研究所 | Flatness detection device and detection method for large ultra-precise annular plane |
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