CN106441190B - Cross axle size measuring device - Google Patents
Cross axle size measuring device Download PDFInfo
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- CN106441190B CN106441190B CN201610891793.XA CN201610891793A CN106441190B CN 106441190 B CN106441190 B CN 106441190B CN 201610891793 A CN201610891793 A CN 201610891793A CN 106441190 B CN106441190 B CN 106441190B
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- measuring
- displacement sensor
- measuring head
- driving
- shaft
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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
- G01B21/02—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 length, width, or thickness
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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
- G01B21/10—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 diameters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention provides a cross axle size measuring device which comprises a bottom plate for supporting a cross axle, wherein a measuring mechanism for measuring the axial length and the diameter of a shaft neck of the cross axle is arranged on the bottom plate, the measuring mechanism comprises two first measuring heads which can be respectively contacted with the end parts of the two shaft necks in the axial direction of the cross axle, two second measuring heads which can be respectively abutted against the side walls of the two shaft necks, a displacement sensor for measuring the displacement quantity of the first measuring head and the second measuring head, a driving component for driving the two first measuring heads and the two second measuring heads, and a driving device for driving the displacement sensor to move towards/away from the first measuring head and the second measuring head. The measuring device adopts an indirect measuring means, prevents the displacement sensor from directly contacting with the cross shaft, effectively protects the displacement sensor and prolongs the service life; the measuring device realizes point contact, and avoids the problems of high processing precision and difficult precision guarantee of the measuring device during surface contact or line contact.
Description
Technical Field
The invention relates to a measuring device, in particular to a cross axle size measuring device.
Background
The cross shaft is also called a cross joint, is a part for realizing variable-angle power transmission, is used for changing the position of the direction of a transmission axis, and is a joint part of an automobile driving system. At present, the axial length of a cross shaft and the diameter of a shaft neck are mainly in surface contact and linear contact during measurement, so the processing requirements on a measuring head and a fixed surface (a machined part) for measurement are high, the precision is difficult to guarantee, the manufacturing period is long, and the adjustment and maintenance cost is high; in the prior art, the size measurement is carried out by directly contacting a product through a displacement sensor, and no corresponding protective measures exist, so that the displacement sensor has short service life, higher damage frequency and increased maintenance cost.
In view of the above-mentioned drawbacks, the present designer has made active research and innovation to create a cross shaft dimension measuring device, which has industrial application value.
Disclosure of Invention
In order to solve the above-mentioned technical problems, an object of the present invention is to provide a cross shaft dimension measuring device which employs a point contact measuring means and can effectively protect a displacement sensor.
The invention discloses a cross shaft size measuring device which comprises a bottom plate used for supporting a cross shaft, wherein a measuring mechanism used for measuring the axial length and the shaft neck diameter of the cross shaft is arranged on the bottom plate, the measuring mechanism comprises two first measuring heads which can be respectively contacted with the end parts of two shaft necks in the same axial direction of the cross shaft, two second measuring heads which can be respectively abutted against the side walls of the two shaft necks in the same axial direction, a displacement sensor used for measuring the displacement quantity of the first measuring head and the second measuring head, a driving component used for driving the two first measuring heads and the two second measuring heads to move, and a driving device used for driving the displacement sensor to move towards/away from the first measuring head and the second measuring head.
Furthermore, a positioning mechanism for positioning the cross shaft is further arranged on the bottom plate, the positioning mechanism comprises two supporting blocks which are distributed along the same axial direction of the cross shaft, and a first reference shaft and a second reference shaft which form a V-shaped groove are arranged on the supporting blocks.
Furthermore, still be equipped with stop gear on the bottom plate, stop gear includes two edges another axial of cross distribution's backup pad, the tip of one of them backup pad has first V type groove, the tip of another backup pad is the curved surface, two the tip of backup pad is less than the horizontal tangent plane after the cross contacted with positioning mechanism.
Furthermore, the bottom plate is also provided with a jacking limiting mechanism for driving the cross shaft to lift, the jacking limiting mechanism comprises a supporting plate and a first cylinder for driving the supporting plate to support the cross shaft, and the supporting plate is provided with two second V-shaped grooves which are respectively contacted with two shaft necks in the same axial direction of the cross shaft.
Furthermore, the driving assembly comprises a base, a linear slide rail arranged on the base, a measuring head fixing seat which slides along the linear slide rail and is connected with the first measuring head/the second measuring head, and a second air cylinder which drives the measuring head fixing seat to slide, wherein the output end of the second air cylinder is connected with a connecting block which slides along the linear slide rail, the base is provided with a spring fixing seat, the connecting block is connected with a spring, and the spring penetrates through the measuring head fixing seat and is connected with the spring fixing seat.
Furthermore, the driving device comprises a displacement sensor fixing seat arranged on the base, a guide sleeve penetrates through the displacement sensor fixing seat, the displacement sensor is sleeved in the guide sleeve, and a pneumatic part for driving the displacement sensor to stretch is arranged on the guide sleeve.
Furthermore, the measuring mechanism further comprises a protective cover covering the displacement sensor and the driving assembly.
Furthermore, the bottom plate is also provided with a plurality of adjusting plates connected with the measuring mechanism, and the adjusting plates are provided with a plurality of kidney-shaped grooves.
Furthermore, a graduated scale for marking the position of the measuring mechanism is arranged on the bottom plate.
Furthermore, the end of the first measuring head is spherical, the end of the second measuring head is flat-plate-shaped, and the end of the second measuring head is curved.
Furthermore, a damping mechanism is arranged below the bottom plate.
By the scheme, the invention at least has the following advantages:
the measuring device adopts an indirect measuring means, prevents the displacement sensor from directly contacting with the cross shaft but contacting with the cross shaft through the measuring head, and converts the size of the displacement sensor by sensing the displacement of the measuring head, thereby effectively protecting the displacement sensor and prolonging the service life; the positioning mechanism of the measuring device is provided with the reference shaft forming the V shape, and the measuring head is a curved surface, so that point contact is realized, and the problems of high processing precision and difficult precision guarantee of the measuring device during surface contact or line contact are avoided.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of the structure of the apparatus of the present invention;
FIG. 2 is a schematic view of the indirect measuring mechanism of the apparatus of the present invention;
fig. 3 is a schematic structural diagram of a positioning mechanism in the device of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1 to 3, a cross shaft size measuring device according to a preferred embodiment of the present invention includes a bottom plate 1 for supporting a cross shaft 2, wherein a measuring mechanism for measuring an axial length of the cross shaft 2 and a diameter of a journal 3 is disposed on the bottom plate 1, the measuring mechanism includes two first measuring heads 16 capable of contacting end portions of the two journals 3 in a same axial direction of the cross shaft 2, two second measuring heads 15 capable of abutting against side walls of the two journals 3 in the same axial direction, a displacement sensor 4 for measuring displacements of the first measuring head 16 and the second measuring head 15, a driving assembly for driving the two first measuring heads 16 and the two second measuring heads 15 to move, and a driving device for driving the displacement sensor 4 to move toward/away from the first measuring head 15 and the second measuring head 16.
In order to ensure the accuracy of measurement, a positioning mechanism for positioning the cross shaft 2 is further arranged on the bottom plate 1, the positioning mechanism comprises two supporting blocks 12 distributed along the same axial direction of the cross shaft 2, and a first reference shaft 13 and a second reference shaft 14 which form a V-shaped groove are arranged on the supporting blocks 12. The journals 3 of the cross 2 are perpendicular to the first 13 and second 14 reference axes and are in point contact, and the V-shaped design is suitable for fixing cross 2 with different journal 3 diameters due to the effect of gravity.
Preferably, still be equipped with stop gear on the bottom plate 1, stop gear includes two edges the backup pad 21 of another axial distribution of cross 2, the tip that one of them backup pad 21 has first V type groove 17, another backup pad 21 is the curved surface, two the tip of backup pad 21 is less than cross 2 and the horizontal tangent plane after the positioning mechanism contact, avoid cross 2 unsettled on first reference shaft 13 and second reference shaft 14, lead to measuring to have the mistake.
In order to facilitate the cross shaft 2 to rotate 90 degrees after one axial direction is measured, and measure the length of the other axial direction and the diameter of the shaft neck 3, the bottom plate 1 is further provided with a jacking limiting mechanism for driving the cross shaft 2 to lift, the jacking limiting mechanism comprises a supporting plate and a first cylinder 22 for driving the supporting plate to support the cross shaft 2, and the supporting plate is provided with two second V-shaped grooves 24 which are respectively contacted with the two shaft necks 3 in the same axial direction of the cross shaft 2.
In order to realize the movement of the first measuring head 16/the second measuring head 15, the driving component comprises a base 29, a linear slide rail 7 arranged on the base 29, a measuring head fixing seat 5 which slides along the linear slide rail 7 and is connected with the first measuring head 16/the second measuring head 15, and a second cylinder 23 which drives the measuring head fixing seat 5 to slide, wherein the output end of the second cylinder 23 is connected with a connecting block 6 which slides along the linear slide rail 7, the base 29 is provided with a spring fixing seat 8, the connecting block 6 is connected with a spring 9, and the spring 9 penetrates through the measuring head fixing seat 5 and is connected with the spring fixing seat 8, so that the first measuring head 16/the second measuring head 15 is ensured to be in close contact with the cross shaft 2, and the springback after rigid collision is avoided, and a gap is formed between the first measuring head.
In order to realize that the displacement sensor 4 moves towards/away from the first measuring head 16 and the second measuring head 15, the driving device comprises a displacement sensor fixing seat 11 arranged on the base 29, a guide sleeve 25 penetrates through the displacement sensor fixing seat 11, the displacement sensor 4 is sleeved in the guide sleeve 25, and a pneumatic piece 26 for driving the displacement sensor 4 to stretch and retract is arranged on the guide sleeve 25.
In order to further protect the displacement sensor 4, the measuring mechanism further comprises a protective cover 19 covering the displacement sensor 4 and the driving assembly.
For the convenient cross axle 2 that adapts to measure different sizes, adjust the position of measuring mechanism on bottom plate 1, still be equipped with on bottom plate 1 and connect measuring mechanism's a plurality of regulating plates 27, be equipped with a plurality of kidney-shaped grooves 28 on the regulating plate 27.
Preferably, a graduated scale 18 for marking the position of the measuring mechanism is arranged on the bottom plate 1.
In order to realize point contact measurement, the end of the first measuring head 16 is spherical, the end of the second measuring head 15 is flat, and the end of the second measuring head is a curved surface, so that the measured size is the longest diameter.
For further accurate measurement, a damping mechanism 20 is arranged below the bottom plate 1.
The working principle of the invention is as follows:
first, the displacement sensor 4 is corrected by the correction tool to set a reference point (point 0).
When the cross shaft 2 slides downwards, the cross shaft 2 stops moving and is positioned, and when the cross shaft 2 slides downwards, the cross shaft is contacted with the first V-shaped groove 17 at the end part of one support plate 21 and the curved surface at the end part of the other support plate 21, the curved surfaces are contacted with the first V-shaped groove 17 at the end part of the other support plate 21, but cannot be contacted simultaneously; when measuring, the second cylinder 23 is out of position, the spring 9 contracts to drive the measuring head fixing seat 5 and the first measuring head 16/the second measuring head 15 on the linear slide rail 7 to do linear motion until the point contact with the cross shaft 2 is achieved, and the displacement sensor 4 extends out under the driving of the pneumatic piece 26 and contacts with the measuring head fixing seat 5 to measure the displacement of the first measuring head 16/the second measuring head 15.
Axial length measurement calculation: respectively adding the numerical values of the two displacement sensors 4 at the end parts of the shaft necks 3 (the numerical values have positive and negative values), adding the actual value of the correcting element, and if the numerical values are within the error range, determining that the dimension is qualified, otherwise, determining that the dimension is unqualified;
journal diameter measurement calculation: and adding the actual value of the correcting part to the value of the single displacement sensor 4 on the side of the shaft neck 3, wherein if the value is within the error range, the size is qualified, and otherwise, the size is unqualified.
After the measurement is finished, the displacement sensor 4 returns under the drive of the pneumatic part 26, a groove is formed in the connecting block 6, an adjusting screw 10 is clamped in the groove, the adjusting screw 10 is connected with the output end of the second air cylinder 23 through a screw rod, the second air cylinder 23 returns, the connecting block 6 and the measuring head fixing seat 5 are pulled to return through the adjusting screw 10, meanwhile, the first measuring head 16/the second measuring head 15 returns, the first air cylinder 22 jacks up, the cross shaft 2 is supported by the second V-shaped groove 24, the cross shaft 2 is rotated by 90 degrees and then placed again under the matching of the manipulator, the first air cylinder 22 returns, and the other axial length of the cross shaft 2 and the diameters of the rest two shaft necks 3 are measured.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A cross axle size measuring device is characterized in that: the measuring mechanism comprises two first measuring heads which can be respectively contacted with the end parts of two journals on the same axial direction of the cross shaft, two second measuring heads which can be respectively abutted against the side walls of the two journals on the same axial direction, a displacement sensor for measuring the displacement of the first measuring heads and the second measuring heads, a driving component for driving the two first measuring heads and the two second measuring heads to move, and a driving device for driving the displacement sensor to move towards/away from the first measuring heads and the second measuring heads; the bottom plate is also provided with a positioning mechanism for positioning the cross shaft, the positioning mechanism comprises two supporting blocks which are distributed along the same axial direction of the cross shaft, and the supporting blocks are provided with a first reference shaft and a second reference shaft which form a V-shaped groove;
the driving assembly comprises a base, a linear slide rail arranged on the base, a measuring head fixing seat which slides along the linear slide rail and is connected with the first measuring head/the second measuring head, and a second air cylinder which drives the measuring head fixing seat to slide, wherein the output end of the second air cylinder is connected with a connecting block which slides along the linear slide rail, the base is provided with a spring fixing seat, the connecting block is connected with a spring, and the spring penetrates through the measuring head fixing seat and is connected with the spring fixing seat; the end part of the first measuring head is spherical, the second measuring head is flat-plate-shaped, and the end part of the second measuring head is a curved surface;
when the displacement sensor is driven by the pneumatic part to extend out, the displacement sensor is in contact with the measuring head fixing seat and measures the displacement of the first measuring head or the second measuring head.
2. The measurement device of claim 1, wherein: the bottom plate is further provided with a limiting mechanism, the limiting mechanism comprises two supporting plates which are distributed along the other axial direction of the cross shaft, the end part of one supporting plate is provided with a first V-shaped groove, the end part of the other supporting plate is a curved surface, and the end parts of the two supporting plates are lower than a horizontal tangent plane of the cross shaft after being contacted with the positioning mechanism.
3. The measurement device according to any one of claims 1-2, wherein: the bottom plate is further provided with a jacking limiting mechanism for driving the cross shaft to lift, the jacking limiting mechanism comprises a supporting plate and a first cylinder for driving the supporting plate to support the cross shaft, and the supporting plate is provided with two second V-shaped grooves which are respectively contacted with two shaft necks in the same axial direction of the cross shaft.
4. The measurement device of claim 1, wherein: the driving device comprises a displacement sensor fixing seat arranged on the base, a guide sleeve penetrates through the displacement sensor fixing seat, the displacement sensor is sleeved in the guide sleeve, and a pneumatic piece for driving the displacement sensor to stretch is arranged on the guide sleeve.
5. The measurement device of claim 1, wherein: the measuring mechanism further comprises a protective cover covering the displacement sensor and the driving assembly.
6. The measurement device of claim 1, wherein: the bottom plate is further provided with a plurality of adjusting plates connected with the measuring mechanism, and the adjusting plates are provided with a plurality of kidney-shaped grooves.
7. The measurement device of claim 6, wherein: and the bottom plate is provided with a graduated scale for marking the position of the measuring mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610891793.XA CN106441190B (en) | 2016-10-13 | 2016-10-13 | Cross axle size measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610891793.XA CN106441190B (en) | 2016-10-13 | 2016-10-13 | Cross axle size measuring device |
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| Publication Number | Publication Date |
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| CN106441190A CN106441190A (en) | 2017-02-22 |
| CN106441190B true CN106441190B (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610891793.XA Active CN106441190B (en) | 2016-10-13 | 2016-10-13 | Cross axle size measuring device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844434A (en) * | 2018-05-25 | 2018-11-20 | 南京埃斯顿智能***工程有限公司 | Novel cross shaft detection device |
| CN109238192B (en) * | 2018-11-07 | 2023-12-12 | 南京马波斯自动化设备有限公司 | Special-shaped groove size measuring device |
| CN114234892A (en) * | 2021-12-21 | 2022-03-25 | 万向钱潮股份有限公司 | Special detection tool and detection method for rapidly detecting taper of journal of universal joint pin |
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| CN203940846U (en) * | 2014-06-23 | 2014-11-12 | 杭州新松机器人自动化有限公司 | The diameter of axle pick-up unit of cylindrical work |
| CN105698731A (en) * | 2016-04-14 | 2016-06-22 | 上海精智实业有限公司 | Apparatus for detecting inner and outer diameters of ball cage |
| CN105698727A (en) * | 2016-03-16 | 2016-06-22 | 杭州正强万向节有限公司 | Full automatic intelligent detector for cross axle axis universal joint |
| CN205580417U (en) * | 2016-04-21 | 2016-09-14 | 苏州博众精工科技有限公司 | Subassembly of measurationing |
| CN206177268U (en) * | 2016-10-13 | 2017-05-17 | 苏州玻色智能科技有限公司 | Cross axle size measurement device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1157405B (en) * | 1982-01-15 | 1987-02-11 | Finike Italiana Marposs | COMPARATOR FOR THE CONTROL OF LINEAR DIMENSIONS OF MECHANICAL PIECES |
| IT1232878B (en) * | 1989-07-21 | 1992-03-05 | Prima Ind Spa | DEVICE AND METHOD FOR THE AUTOMATIC MEASUREMENT OF DIAMETERS AND LUN GHEZZE ON REVOLUTION SOLIDS |
| CN201034569Y (en) * | 2007-03-30 | 2008-03-12 | 攀钢集团攀枝花钢铁研究院 | Measuring apparatus |
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2016
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203940846U (en) * | 2014-06-23 | 2014-11-12 | 杭州新松机器人自动化有限公司 | The diameter of axle pick-up unit of cylindrical work |
| CN105698727A (en) * | 2016-03-16 | 2016-06-22 | 杭州正强万向节有限公司 | Full automatic intelligent detector for cross axle axis universal joint |
| CN105698731A (en) * | 2016-04-14 | 2016-06-22 | 上海精智实业有限公司 | Apparatus for detecting inner and outer diameters of ball cage |
| CN205580417U (en) * | 2016-04-21 | 2016-09-14 | 苏州博众精工科技有限公司 | Subassembly of measurationing |
| CN206177268U (en) * | 2016-10-13 | 2017-05-17 | 苏州玻色智能科技有限公司 | Cross axle size measurement device |
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| CN106441190A (en) | 2017-02-22 |
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