CN86100397A - Simple and easy three-coordinate measuring method of hole axle part and Computerized measurement instrument - Google Patents
Simple and easy three-coordinate measuring method of hole axle part and Computerized measurement instrument Download PDFInfo
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- CN86100397A CN86100397A CN 86100397 CN86100397A CN86100397A CN 86100397 A CN86100397 A CN 86100397A CN 86100397 CN86100397 CN 86100397 CN 86100397 A CN86100397 A CN 86100397A CN 86100397 A CN86100397 A CN 86100397A
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Abstract
The invention belongs to the three-coordinate measuring method and the instrument of a kind of hole axial workpiece.The microcomputer measurement system of the present invention utilizes before workpiece (1) Rotate 180 ° and constant characteristics of its actual measurement radius R ij afterwards, a pair of by having (or several to) gauge head obtains the cylindrical coordinates Rij of each measuring point of surface of the work.For preventing the radial motion of Workpiece Rotating axis.The special secondary top (2) that between workpiece (1) and instrument back dead centre (13), increases.The present invention can eliminate the parallelism error influence of guide rail (10) to workpiece (1) rotation automatically, realizes the measurement of the degree of precision of tens sizes such as circularity, cylindricity, effect size and morpheme error with low precision instrument.
Description
The invention belongs to the three-coordinate measuring method and the instrument of a kind of hole axle part.
Form and position error measurement method commonly used, its measuring accuracy is lower, and high-precision roundness measuring equipment, three-coordinate instrument are too expensive, some morpheme error projects (such as circularity, cylindricity, right alignment etc.) are also all difficult with accurate measurement in factory so far to making.Therefore in addition, the existing geometric flowmeter can only be surveyed one or two individual error index mostly simultaneously, and is difficult to expand at any time its function, and the comparability between low, the project of efficiency of measurement is poor in the time need carrying out multinomial synthetic geometry precision analysis to workpiece.Though existing three-coordinate instrument can measure multinomial error criterion, complex structure is too high again to the manufacturing accuracy requirement of instrument.
Task of the present invention provides a kind of instrument that can use low-cost, low precision, obtain degree of precision three-dimensional coordinates measurement result's method, and according to said method provide a kind of can from one group of measured data, obtaining simultaneously to take measurements greatly and the simple and easy three-dimensional Computerized measurement instrument of morpheme control information.
Concrete three-coordinate measuring method is: (as shown in Figure 1) utilizes before workpiece (1) Rotate 180 ° and afterwards, its eyeball is to distance (actual measurement radius) R of rotation
IjConstant these characteristics are by from a distance of d
MA pair of (or several to) cantilever (6) in a pair of (or several to) gauge head (2) of placing along workpiece (1) diametric(al) opposite of stretching out, at each equidistant cross section (i=1 of workpiece (1), 2,3 ... m) on the circumference, record each five equilibrium measuring point (j=1,2,3 ... n), before its Rotate 180 ° and gauge head overhang △ afterwards
IjAnd △
' Ij, utilize formula R then
Ij=(d
M-△
Ij-△
' IjCylindrical coordinates (three-dimensional) the numerical value R of each measuring point of surface of the work is tried to achieve in)/2
Ij
Simple and easy three-dimensional Computerized measurement instrument according to above-mentioned measuring method design, it comprises guide rail (10), indexing mechanism (18) (19), sensor (4), computer interface (20), micro computer parts such as (15) is characterized in that having gauge head (2) and a pair of secondary top (12) that a pair of (or several to) placed along diameter of work direction opposite.
The displacement △ that records by above-mentioned two gauge heads (2) in the measurement
IjAnd △
' Ij, become electric weight by sensor (4), become digital quantity input micro computer (15) by computer interface (20) again.In micro computer, at first utilize formula R
Ij=(d
M-△
Ij-△
' IjCylindrical coordinates (three-dimensional) the numerical value R of each measuring point of surface of the work is calculated in)/2
Ij, utilize the calculation procedure finish in advance to calculate various sizes, shape and site error index on the workpiece then.
As shown in Figure 2, in order to prevent that the present invention has increased a secondary top (12) again between workpiece (1) center hole and instrument back dead centre (13) by the not rotation radial motion that brings such as circle, burr, defective of workpiece center hole.The matching part of the center hole of secondary top (12) and workpiece (1) adopts top (for example: with bonding top of methods such as sheep oil) or the chuck structure of no relative motion.Can relatively rotate between the afterbody center hole of secondary top (12) and the instrument back dead centre,, adopt long cone surface or ball face structure for guaranteeing cooperation and rotating accuracy between the two.And guarantee its precision with the facing-up method.
Measure for the inside surface of hole type parts, aforesaid a pair of (or several to) gauge head (2) will stretch in the hole with cantilever, also place along the diametric(al) opposite in hole.In this case, part being installed on dividing head be not with top, but realize with chuck.
Find why roundness measuring equipment is difficult to accurately measure cylindricity in the measurement practice of roundness measuring equipment, its basic reason is to be difficult to eliminate the parallelism error influence of instrument guide rail with respect to the Workpiece Rotating axis.And the principal feature of this measuring instrument is, it can eliminate this error effect at any time automatically, thereby can realize the three-dimensional coordinates measurement of degree of precision on the instrument of low precision.Its concrete principle is as follows:
As shown in Figure 2, though instrument guide rail (10) has gone down in that II-the II section is sunken, as long as when going up lower sensor (4) and moving to herein, its indicating value is no to scale not, can measure △
IjAnd △
' Ij, we just still can utilize formula R
Ij=(d
M-△
Ij-△
' IjR is accurately calculated in)/2
IjValue that is to say, as long as the indicating value that goes up lower sensor (4) no to scale not, guide rail (10) is just had no effect to measurement result with respect to the parallelism error of workpiece (1) rotation so.
The error compensation function of this dependence measuring method itself, and simply calculate the method for eliminating instrument error influence by micro computer is than the manufacturing accuracy of the guide rail of keeping under strict control or adopt the method for cylinder scale much better.Just not saying the manufacture difficulty of back two kinds of methods and cost are exactly accurate produced guide rail or cylinder scale, the oil film thickness of the wearing and tearing of guide rail, thermal deformation, sliding contact surface is changed, influences such as dust also all can't be eliminated.And this method and instrument can all be eliminated above-mentioned influence, thereby make cylindricity, and the measurement of difficult measurement projects such as effect size becomes possibility.
The present invention can not only provide the effect size and the various physical size of workpiece quantitatively, and can also obtain tapering, convex-concave degree simultaneously, axis verticality, circularity, cylindricity, plain line linearity, plain line parallel degree, circle are beated, right alignment and guide rail be with respect to the depth of parallelism of Workpiece Rotating axis and the multiple shape and the site errors such as radial motion of main shaft (or workpiece) rotation.Therefore, the present invention not only can use low precision, instrument is realized the three-dimensional coordinates measurement of degree of precision cheaply, and can also obtain a large amount of sizes and morpheme control information from one group of measured data simultaneously.
The Figure of description explanation:
Fig. 1: measuring method and measurement mechanism synoptic diagram
Fig. 2: the on-line measurement system synoptic diagram of Computerized measurement instrument
(1). workpiece, (2). gauge head, (3). the trip bolt of gauge head, (4). sensor, (5). connect the lead of computer, (6). cantilever, (7). the trip bolt of cantilever, (8). column, (9). base, (10). instrument guide rail, (11). buting iron, (12). secondary is top, (13). the back dead centre on the instrument, (14). tailstock, (15). micro computer, (16). heart folder, (17). shift fork, (18). index plate, (19). the dividing head headstock, (20). computer interface.
Claims (3)
1, the three-coordinate measuring method of a kind of hole axle part, it is characterized in that a pair of (or several to) gauge head (2) by placing along workpiece (1) diametric(al) opposite, on each cross-sectional periphery of workpiece, record each five equilibrium measuring point before its Rotate 180 ° and gauge head overhang △ afterwards
IjAnd △
I ' j, utilize formula R then
Ij=(d
M-Δ
Ij-Δ
Ij ＇The cylindrical coordinates numerical value R of surface of the work each point is tried to achieve in)/2
Ij
2, a kind of three-coordinates measuring machine by the described measuring method design of claim 1, it comprises guide rail (10), indexing mechanism (18) (19), sensor (4), micro computer parts such as (15), it is characterized in that having gauge head (2) and a pair of secondary top (12) that a pair of (or several to) placed along diameter of work direction opposite.
3, by the described measuring instrument of claim 2, it is characterized in that secondary top (12) places between workpiece (1) center hole and the instrument back dead centre (13), secondary matching part top and workpiece (1) adopts the top or chuck structure of no relative motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86100397 CN86100397A (en) | 1986-01-14 | 1986-01-14 | Simple and easy three-coordinate measuring method of hole axle part and Computerized measurement instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86100397 CN86100397A (en) | 1986-01-14 | 1986-01-14 | Simple and easy three-coordinate measuring method of hole axle part and Computerized measurement instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86100397A true CN86100397A (en) | 1987-07-29 |
Family
ID=4801002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86100397 Withdrawn CN86100397A (en) | 1986-01-14 | 1986-01-14 | Simple and easy three-coordinate measuring method of hole axle part and Computerized measurement instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86100397A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782381A (en) * | 2010-03-01 | 2010-07-21 | 洛阳轴研科技股份有限公司 | Horizontal adjusting device for sensor used to measure cylindricity and diameter of workpiece |
| CN101915562A (en) * | 2010-07-20 | 2010-12-15 | 中国航空工业集团公司西安飞机设计研究所 | Calibrating device for tilt angle sensor |
| CN102980461A (en) * | 2012-11-16 | 2013-03-20 | 无锡麦铁精密机械制造有限公司 | Case cover hole location detection tool |
| CN106643600A (en) * | 2016-11-30 | 2017-05-10 | 大连计量检测中心有限公司 | Multifunctional intelligent coordinate detector |
-
1986
- 1986-01-14 CN CN 86100397 patent/CN86100397A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782381A (en) * | 2010-03-01 | 2010-07-21 | 洛阳轴研科技股份有限公司 | Horizontal adjusting device for sensor used to measure cylindricity and diameter of workpiece |
| CN101782381B (en) * | 2010-03-01 | 2011-09-07 | 洛阳轴研科技股份有限公司 | Horizontal adjusting device for sensor used to measure cylindricity and diameter of workpiece |
| CN101915562A (en) * | 2010-07-20 | 2010-12-15 | 中国航空工业集团公司西安飞机设计研究所 | Calibrating device for tilt angle sensor |
| CN102980461A (en) * | 2012-11-16 | 2013-03-20 | 无锡麦铁精密机械制造有限公司 | Case cover hole location detection tool |
| CN102980461B (en) * | 2012-11-16 | 2016-04-06 | 无锡麦铁精密机械制造有限公司 | A kind of case cover hole location detection tool |
| CN106643600A (en) * | 2016-11-30 | 2017-05-10 | 大连计量检测中心有限公司 | Multifunctional intelligent coordinate detector |
| CN106643600B (en) * | 2016-11-30 | 2022-05-27 | 大连计量检测中心有限公司 | Multifunctional intelligent coordinate detector |
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| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |