CN107976165A - The method of three coordinate measuring machine automatic measurement stabiliser bar - Google Patents
The method of three coordinate measuring machine automatic measurement stabiliser bar Download PDFInfo
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- CN107976165A CN107976165A CN201610937798.1A CN201610937798A CN107976165A CN 107976165 A CN107976165 A CN 107976165A CN 201610937798 A CN201610937798 A CN 201610937798A CN 107976165 A CN107976165 A CN 107976165A
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- stabiliser bar
- measuring machine
- coordinate measuring
- coordinate
- measured
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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
- G01B21/04—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 by measuring coordinates of points
Abstract
The invention discloses the method for three coordinate measuring machine automatic measurement stabiliser bar, including：A, three coordinate measuring machine is according to stabiliser bar 3-dimensional image model and the physical quantity planning survey path to be measured；B, first stabiliser bar to be measured is positioned on fixture；C, measurement is positioned at the first and second benchmark cylinders of shaft, respectively inner side plane, medial plane and the end holes of the third and fourth benchmark cylinder in two lateral bending portions and each termination in the middle part of stabiliser bar；D, two termination datum marks and first, second shaft datum mark are obtained；E, the workpiece coordinate system of three coordinate measuring machine is established, is then adjusted to consistent with the coordinate system of stabiliser bar workpiece drawing；F, generation workpiece coordinate system establishes program；G, according to first stabiliser bar to be measured of measuring route automatic measurement.Time of measuring of the present invention is short, high certainty of measurement.
Description
Technical field
The present invention relates to the method for three coordinate measuring machine automatic measurement automobile stabilizer bar.
Background technology
Automobile stabilizer bar is the important composition component of automobile suspension system, its workmanship is directly related to automotive suspension system
The performance of system and service life.Therefore, it is necessary to carry out very accurate detection in automobile stabilizer bar production process, to ensure product
Precision and tolerance coordinates.At present, the detection to automobile stabilizer bar mainly or by manual gauge detects, not only detection time
It is long, it is time-consuming and laborious, and since the factor by human interference is more, cause measurement accuracy also not high.
Three coordinate measuring machine is the common device for measuring accessory size data, and tested part is placed in three-dimensional coordinates measurement space
In, the coordinate position of each measuring point on tested part can be obtained, according to the spatial value of these points, tested part can be obtained
Physical dimension, shape and position.Although three coordinate measuring machine has been obtained for being widely applied at present, it is often limited to
The contour shape of tested part, when the contour shape of part is more complicated, it is necessary on some datum level projection or repeatedly into
Row transformation of criterion so that gratifying measurement accuracy and measurement speed can not be reached when being measured using three coordinate measuring machine
Degree.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of side with three coordinate measuring machine automatic measurement stabiliser bar
Method, this method time of measuring is short, high certainty of measurement.
In order to solve the above technical problems, the technical solution used in the present invention is：
The method of three coordinate measuring machine automatic measurement stabiliser bar, comprises the following steps：
Step a, the 3-dimensional image model of stabiliser bar is imported into three coordinate measuring machine；Three coordinate measuring machine is steady according to this
The 3-dimensional image model of fixed pole and the stabiliser bar physical quantity planning survey path to be measured, make the stylus of three coordinate measuring machine exist
It will not be interfered in measurement process with stabiliser bar；
Step b, first stabiliser bar to be measured is positioned on the fixture of three coordinate measuring machine, makes it in measurement process
It will not shake；
Step c, manual control three coordinate measuring machine, makes the stylus of three coordinate measuring machine measure positioned at shaft in the middle part of stabiliser bar
The first benchmark cylinder and the second benchmark cylinder, the 3rd base in the middle part of the stabiliser bar in two lateral bending portions of shaft both sides respectively
Inner side plane, medial plane and the end holes of director circle column and the 4th benchmark cylinder and each stabilizer bar end；
Step d, three coordinate measuring machine is according to the inner side plane of each stabilizer bar end and the measuring coordinate value of medial plane,
The split of each stabilizer bar end is constructed, the center of circle of the end holes of each stabilizer bar end is projected to the stabilizer bar end
Split, obtain two termination datum marks；Also, by by the center line and the 3rd benchmark cylinder of the first benchmark cylinder
Heart line, which intersects, obtains the first shaft datum mark, and the center line of the second benchmark cylinder is intersected with the center line of the 4th benchmark cylinder and is obtained
Obtain the second shaft datum mark；
Step e, three coordinate measuring machine is built with two termination datum marks, the first shaft datum mark and the second shaft datum mark
The midpoint of the line of two termination datum marks, is projected to the line of the first shaft datum mark and the second shaft datum mark by one plane
It is upper to be used as coordinate origin, three-dimensional coordinates measurement is established by 321 rules based on the coordinate origin and constructed plane
The workpiece coordinate system of machine, then the workpiece coordinate system of three coordinate measuring machine is adjusted to the coordinate system one with stabiliser bar workpiece drawing
Cause；
Step f, three coordinate measuring machine records above-mentioned step c to step e, and generates workpiece coordinate system and establish program；
Step g, three coordinate measuring machine obtains first according to described first stabiliser bar to be measured of path planning automatic measurement
The measurement data of root stabiliser bar to be measured.
After adopting the above technical scheme, the present invention has at least the following advantages：
The method of the present invention can carry out automatic measurement to the stabiliser bar product of same model more than one piece time, with conventional measurement side
Formula is compared, and substantially reduces time of measuring, improves measurement efficiency, and alleviates the work load of survey crew.In addition, with showing
Some detects the situation for causing the fluctuation of testing result larger because being often subject to interference from human factor and compares manually, the present invention by
Then measured using machine, it is reproducible, thus more accurate measurement result can be obtained.
Brief description of the drawings
Fig. 1 show the automobile stabilizer bar that method according to an embodiment of the invention is obtained two termination datum marks,
First shaft datum mark and the second shaft datum mark.
Fig. 2 shows the split for the automobile stabilizer bar termination that method according to an embodiment of the invention is obtained.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
The method of three coordinate measuring machine automatic measurement stabiliser bar according to an embodiment of the invention, comprises the following steps：
Step a, the 3-dimensional image model of stabiliser bar is imported into three coordinate measuring machine；Three coordinate measuring machine is steady according to this
The 3-dimensional image model of fixed pole and the stabiliser bar physical quantity planning survey path to be measured, make the stylus of three coordinate measuring machine exist
It will not be interfered in measurement process with stabiliser bar to be measured.The above-mentioned stabiliser bar physical quantity to be measured includes but not limited to take turns
Wide degree, flatness, depth of parallelism etc., above-mentioned measuring route includes detection range, retract the parameters such as distance.
Step b, first stabiliser bar to be measured is positioned on the fixture of three coordinate measuring machine, makes it in measurement process
It will not shake；
Step c, incorporated by reference to shown in Fig. 1 and Fig. 2.Manual control three coordinate measuring machine, surveys the stylus of three coordinate measuring machine
Amount is located at the first benchmark cylinder 111 of shaft 11 and the second benchmark cylinder 112 in the middle part of stabiliser bar, respectively positioned at bar in the middle part of stabiliser bar
The 3rd benchmark cylinder 113 and the 4th benchmark cylinder 114 and each stabilizer bar end 13 in two lateral bending portions 12 of body both sides
Inner side plane 131, medial plane 132 and end holes 130.
Any one cylinder between the midpoint and stabiliser bar side turning position of shaft 11 in the middle part of stabiliser bar can be chosen
Part is used as the first benchmark cylinder 111, chooses in the middle part of stabiliser bar between the midpoint and stabiliser bar opposite side turning position of shaft 11
Any one column part as the second benchmark cylinder 112, any one circle in two lateral bending portions 12 can be chosen respectively
Post part is respectively as the 3rd benchmark cylinder 113 and the 4th benchmark cylinder 114.In the present embodiment, bar in the middle part of stabiliser bar is chosen
That cylinder close to stabiliser bar side turning position is located at stabiliser bar side as the first benchmark cylinder 111, selection with it
Lateral bending portion on close to stabiliser bar side turning position that cylinder as the 3rd benchmark cylinder 113, choose in stabiliser bar
That cylinder on portion's shaft close to stabiliser bar opposite side turning position is chosen positioned at stabilization as the second benchmark cylinder 112
That cylinder in the lateral bending portion of bar opposite side close to stabiliser bar opposite side turning position is as the 4th benchmark cylinder 114.It is logical
The center line that measuring basis cylinder is known that the benchmark cylinder is crossed, end holes 130 are known that by measuring end holes 130
The center of circle.
Step d, three coordinate measuring machine is according to the inner side plane 131 of each stabilizer bar end and the measurement of medial plane 132
Coordinate value, constructs the split 133 (being represented by dashed line in Fig. 2) of each stabilizer bar end, by the end of each stabilizer bar end
The center of circle of head bore is projected to the split of the stabilizer bar end, obtains two terminations datum mark PT1, PT2；Also, by by
The center line X1 and the center line X3 of the 3rd benchmark cylinder 133 of one benchmark cylinder 111, which intersect, obtains the first shaft datum mark PT3,
The center line X2 of second benchmark cylinder 112 is intersected with the center line X4 of the 4th benchmark cylinder 114 and obtains the second shaft datum mark
PT4。
Step e, three coordinate measuring machine two termination datum mark PT1, PT2, the first shaft datum mark PT3 and the second shaft
Datum mark PT4 builds a plane, and the midpoint PT0 of the line L1 of two terminations datum mark PT1, PT2 are projected to the first shaft base
Coordinate origin O is used as on the line L2 of PT3 and the second shaft datum mark PT4 on schedule, based on coordinate origin O and constructed
Plane the workpiece coordinate system of three coordinate measuring machine, then the workpiece coordinate system tune by three coordinate measuring machine are established by 321 rules
It is whole extremely consistent with the coordinate system of stabiliser bar workpiece drawing.Step d and step e is realized by the software of three coordinate measuring machine.
Step f, three coordinate measuring machine records above-mentioned step c to step e, and generates workpiece coordinate system and establish program.
Step g, first stabiliser bar to be measured of measuring route automatic measurement that three coordinate measuring machine is planned according to step a,
Obtain the measurement data of first stabiliser bar to be measured.
Step h, first stabiliser bar to be measured for completing measurement is removed from fixture, will be with first stabilization to be measured
Remaining identical stabiliser bar to be measured of rod-type number is positioned on the fixture one by one, for remaining each stabiliser bar to be measured, three
Coordinate measuring machine establishes the workpiece coordinate system that program establishes three coordinate measuring machine automatically according to workpiece coordinate system, and according to step a
The measuring route automatic measurement stabiliser bar of planning, obtains the measurement data of stabiliser bar.
Generate after workpiece coordinate system establishes program, when measuring any automobile stabilizer bar to be measured of other same models,
The automobile stabilizer bar need to be only navigated on fixture, three-dimensional coordinates measurement chance establishes program foundation according to the workpiece coordinate system of generation
The workpiece coordinate system consistent with workpiece drawing coordinate system, and the coordinate value of each measuring point of measuring route measurement according to planning, because
And substantially reduce time of measuring.
The method of the present invention can carry out automatic measurement to the stabiliser bar product of same model more than one piece time, with conventional measurement side
Formula is compared, and substantially reduces time of measuring, improves measurement efficiency, and alleviates the work load of survey crew.By hand in the past
A piece stabiliser bar of measurement will be about spending 7 hours, and after applying the present invention, except when measuring first stabiliser bar to be measured
Because establishing workpiece coordinate system, to establish the time that program results in the need for spending slightly long outer than remaining stabiliser bar, measurement remove first it is to be measured
Remaining each stabiliser bar beyond stabiliser bar only needs or so 1 hour.In addition, with existing detection manually because being often subject to people
The situation for causing the fluctuation of testing result larger for factor interference is compared, and the present invention is due to being measured using machine, repeatability
It is good, thus more accurate measurement result can be obtained.
Claims (3)
1. the method for three coordinate measuring machine automatic measurement stabiliser bar, it is characterised in that comprise the following steps：
Step a, the 3-dimensional image model of stabiliser bar is imported into three coordinate measuring machine；Three coordinate measuring machine is according to the stabiliser bar
3-dimensional image model and the stabiliser bar physical quantity planning survey path to be measured, measuring the stylus of three coordinate measuring machine
During will not be interfered with stabiliser bar；
Step b, first stabiliser bar to be measured is positioned on the fixture of three coordinate measuring machine, makes it will not in measurement process
Shake；
Step c, manual control three coordinate measuring machine, makes the stylus of three coordinate measuring machine measure the of in the middle part of stabiliser bar shaft
One benchmark cylinder and the second benchmark cylinder, respectively positioned at the 3rd basic circle in the middle part of stabiliser bar in two lateral bending portions of shaft both sides
Inner side plane, medial plane and the end holes of column and the 4th benchmark cylinder and each stabilizer bar end；
Step d, three coordinate measuring machine is according to the inner side plane of each stabilizer bar end and the measuring coordinate value of medial plane, construction
Go out the split of each stabilizer bar end, the center of circle of the end holes of each stabilizer bar end is projected into the stabilizer bar end
Facet, obtains two termination datum marks；Also, by by the center line of the center line of the first benchmark cylinder and the 3rd benchmark cylinder
It is intersecting to obtain the first shaft datum mark, the center line of the second benchmark cylinder is intersected with the center line of the 4th benchmark cylinder to acquisition the
Two shaft datum marks；
Step e, three coordinate measuring machine is flat with two termination datum marks, the first shaft datum mark and the second shaft datum mark structure one
Face, the first shaft datum mark is projected to making on the line of the second shaft datum mark by the midpoint of the line of two termination datum marks
For coordinate origin, three coordinate measuring machine is established by 321 rules based on the coordinate origin and constructed plane
Workpiece coordinate system, then the workpiece coordinate system of three coordinate measuring machine is adjusted to consistent with the coordinate system of stabiliser bar workpiece drawing；
Step f, three coordinate measuring machine records above-mentioned step c to step e, and generation workpiece coordinate system establishes program；
Step g, three coordinate measuring machine obtains first according to first stabiliser bar to be measured of measuring route automatic measurement of planning
The measurement data of stabiliser bar to be measured.
2. the method for three coordinate measuring machine automatic measurement stabiliser bar as claimed in claim 1, it is characterised in that including：
Step h, first stabiliser bar to be measured for completing measurement is removed from the fixture, will be with first stabilization to be measured
Remaining identical stabiliser bar to be measured of rod-type number is positioned on the fixture one by one, for remaining each stabiliser bar to be measured, institute
State three coordinate measuring machine program is established according to the workpiece coordinate system and establish the workpiece coordinate system of three coordinate measuring machine automatically, and press
According to the measuring route automatic measurement stabiliser bar of planning, the measurement data of stabiliser bar is obtained.
3. the method for three coordinate measuring machine automatic measurement stabiliser bar as claimed in claim 1, it is characterised in that in the step
In rapid c, that cylinder in the middle part of stabiliser bar on shaft close to stabiliser bar side turning position is chosen as first benchmark
Cylinder, chooses that cylinder in the lateral bending portion of stabiliser bar side close to stabiliser bar side turning position as described the
Three benchmark cylinders, choose in the middle part of stabiliser bar that cylinder on shaft close to stabiliser bar opposite side turning position as described the
Two basic circle columns, choose in the lateral bending portion of stabiliser bar opposite side close to that cylinder at stabiliser bar opposite side turning position
As the 4th benchmark cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610937798.1A CN107976165B (en) | 2016-10-24 | 2016-10-24 | The method of three coordinate measuring machine automatic measurement stabiliser bar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610937798.1A CN107976165B (en) | 2016-10-24 | 2016-10-24 | The method of three coordinate measuring machine automatic measurement stabiliser bar |
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| CN107976165A true CN107976165A (en) | 2018-05-01 |
| CN107976165B CN107976165B (en) | 2019-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610937798.1A Active CN107976165B (en) | 2016-10-24 | 2016-10-24 | The method of three coordinate measuring machine automatic measurement stabiliser bar |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112507283A (en) * | 2020-12-10 | 2021-03-16 | 易思维（杭州）科技有限公司 | 321-rule-based conversion matrix calculation method |
| CN112923830A (en) * | 2021-01-26 | 2021-06-08 | 中国航发贵州黎阳航空动力有限公司 | Device and method for measuring space size of balancing rod |
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| CN102564368A (en) * | 2010-09-27 | 2012-07-11 | 株式会社三丰 | Coordinates measuring head unit and coordinates measuring machine |
| CN102679922A (en) * | 2012-05-09 | 2012-09-19 | 无锡市计量测试中心 | Method for measuring coordinates of curve point by using coordinate measuring machine |
| CN202470937U (en) * | 2011-12-21 | 2012-10-03 | 上海中国弹簧制造有限公司 | Special measure gauge for automobile stabilizer bar |
| CN103925902A (en) * | 2014-04-08 | 2014-07-16 | 北京工业大学 | Profile tolerance error measurement device and method based on arc surfaced cam isometric model |
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2016
- 2016-10-24 CN CN201610937798.1A patent/CN107976165B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101014826A (en) * | 2004-06-28 | 2007-08-08 | 六边形度量衡股份公司 | Measurement probe for use in coordinate measurng machines |
| CN102564368A (en) * | 2010-09-27 | 2012-07-11 | 株式会社三丰 | Coordinates measuring head unit and coordinates measuring machine |
| CN202470937U (en) * | 2011-12-21 | 2012-10-03 | 上海中国弹簧制造有限公司 | Special measure gauge for automobile stabilizer bar |
| CN102679922A (en) * | 2012-05-09 | 2012-09-19 | 无锡市计量测试中心 | Method for measuring coordinates of curve point by using coordinate measuring machine |
| CN103925902A (en) * | 2014-04-08 | 2014-07-16 | 北京工业大学 | Profile tolerance error measurement device and method based on arc surfaced cam isometric model |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112507283A (en) * | 2020-12-10 | 2021-03-16 | 易思维（杭州）科技有限公司 | 321-rule-based conversion matrix calculation method |
| CN112507283B (en) * | 2020-12-10 | 2023-07-07 | 易思维（杭州）科技有限公司 | Conversion matrix resolving method based on 321 rule |
| CN112923830A (en) * | 2021-01-26 | 2021-06-08 | 中国航发贵州黎阳航空动力有限公司 | Device and method for measuring space size of balancing rod |
| CN112923830B (en) * | 2021-01-26 | 2022-06-03 | 中国航发贵州黎阳航空动力有限公司 | Device and method for measuring space size of balancing rod |
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| CN107976165B (en) | 2019-11-08 |
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