CN102513410B - Radial runout measuring method for straightening machine long axis workpiece, and device thereof - Google Patents
Radial runout measuring method for straightening machine long axis workpiece, and device thereof Download PDFInfo
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- CN102513410B CN102513410B CN201110445111.XA CN201110445111A CN102513410B CN 102513410 B CN102513410 B CN 102513410B CN 201110445111 A CN201110445111 A CN 201110445111A CN 102513410 B CN102513410 B CN 102513410B
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Abstract
The present invention relates to a radial runout measuring device for a straightening machine long axis workpiece, and belongs to the field of straightening machine manufacturing. According to the device, a left top tip and a right top tip are arranged on a work platform; the work platform forms a slidable connection with a work table; a motor forms a rotary connection with the left top tip; a photoelectric encoder and the right top tip are fixedly connected; and a tappet type displacement measuring device 1, a tappet type displacement measuring device 2 and a tappet type displacement measuring device 3 are respectively and fixedly connected with the work table. The method and the device of the present invention have the following advantages that: the full automatic measuring calculations of the whole radial runout and the local radial runout of the long axis workpiece on the straightening machine can be achieved, such that the total length radial runout measurement and the local radial runout measurement of the long axis workpiece can be achieved while the cost can be reduced; the method is simple and universal.
Description
Technical field
The invention belongs to straightener field, for long axis workpiece radial beat eccentricity measuring technique, mainly propose a kind of measuring method, be applied to the long axis workpiece whole and part heat treatment of factory's straightener after radial beat eccentricity measure.
Background technology
At present, during domestic straightener alignment long axis workpiece, 3 meters of above long axis workpiece radial beat eccentricitys are measured main employing by hand and are played dial gauge, and operator is according to the demonstration of the different measuring point of dial gauge, observe by rule of thumb high point, then on forcing press, height point is carried out to alignment.Because workpiece is long, on workpiece, there will be many places crooked, and degree of crook, direction is not identical, and institute in this way requires high to operator, and certainty of measurement is very low, and often there is current some alignment, and other put the overproof situation that goes wrong.Workpiece of alignment is consuming time very long.
Summary of the invention
The invention provides a kind of straightener long axis workpiece circular runout measuring method and device, low to solve manual alignment certainty of measurement, measuring speed is slow, needs gauger to have the drawback of a large amount of practical experiences.
The technical solution used in the present invention is: on workbench, have left top and right top, workbench and table rest are slidably connected, motor and left top being rotationally connected, photoelectric encoder and right top being fixedly connected with, tappet rod type displacement measuring device one, tappet rod type displacement measuring device two, tappet rod type displacement measuring device three are fixedly connected with table rest respectively.
Measuring method of the present invention, is that workpiece on straightener is divided several times and measured in the measurement data of various piece, measures the data that 3 groups of workpiece rotate a circle at every turn, finally forms the data of all measurement points of workpiece.And then the data that gather are carried out to calculating and the FFT processing of relative measurement method, and finally form the result needing, comprise the following steps:
(1), by long axis workpiece with the left side on workbench top and right top clamping;
(2), movable straightening machine workbench is to the rightmost side, long axis workpiece also moves to the rightmost side thereupon; With the top rotation long axis workpiece in a left side one week, with tappet rod type displacement measuring device one, tappet rod type displacement measuring device two, tappet rod type displacement measuring device three below long axis workpiece, record a weekly data of three points of this workpiece;
(3), the workbench of movable straightening machine to the left, use again left top rotation long axis workpiece one week, with tappet rod type displacement measuring device one, tappet rod type displacement measuring device two, tappet rod type displacement measuring device three below long axis workpiece, record a weekly data of these three points of this workpiece;
(4), continue above-mentioned process, until long axis workpiece moves to left-most position on straightener, thereby the data of all measurement points of this workpiece are all measured;
(5), these data are carried out to the after-treatment of relative measurement algorithm, concrete grammar is as follows:
A. obtain sensor in some tappet rod type displacement measuring devices with respect to the relative variation of sensor in the tappet rod type displacement measuring device of both sides, home position is at A, B, C, reposition is at a, b, c, from formula below, can calculate the variation that the relative a point of b point and c are ordered:
Y=Xb?-（Xa+L1×（Xc-Xa）/（L1+L2））
Wherein: Y is the absolute deformation that b is ordered, Xa be a point to A point distance, Xb be b point to B point distance, Xc be c point to C point distance, L1 be A to B distance, L2 is that B is to the distance of C;
B. selected current measurement point is b, and two-sided measurement point is respectively a and c, according to relative measurement method formula, a weekly data of these 3 points is calculated respectively, forms one group of new data; By this method, measure long axis workpiece with respect to the radial beat eccentricity of two ends reference point and measure long axis workpiece local radial jerk value;
C. constantly repeat b step, until form the relative measurement data of many group leaders shaft-like work whole and part;
(6) many groups of obtaining cenotype of step (five) is analyzed measurement data, to obtain peak and the angle corresponding to peak of many suites line, the impact bringing in order to eliminate oval error, burr error, adopt FFT to process data, take out amplitude and the peak angle of the sinusoidal line of 1Hz, like this, just realized the analytic process to all data of alignment workpiece.
The invention has the advantages that to realize all automatic measurement of the long axis workpiece whole and part radial beat eccentricity on straightener is calculated, tappet rod type displacement measuring device only adopts 3, and method is general, is applicable to very much computer and carries out the processing of corresponding data.By controlling, straightener workbench moves and left top rotation, can realize the measurement of long axis workpiece, and the quantity of tappet rod type displacement measuring device only there are 3, when reducing costs, long axis workpiece total length and local radial beat eccentricity measurement have been realized, method simple general-purpose.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention, is the state diagram of tappet rod type displacement measuring device during near the workpiece leftmost side;
Fig. 2 is that workbench is moved to the left state diagram once;
Fig. 3 is that the location of workpiece changes schematic diagram;
Fig. 4 is that FFT is to error exploded view.
The specific embodiment
On workbench 6, have left top 2 and right top 8, workbench 6 is slidably connected with table rest 7, motor 1 is rotationally connected with left top 2, photoelectric encoder 9 is fixedly connected with right top 8, and tappet rod type displacement measuring device 1, tappet rod type displacement measuring device 24, tappet rod type displacement measuring device 35 are fixedly connected with table rest 7 respectively.
Fig. 1 is the schematic diagram that the long axis workpiece of straightener is measured, two top can clamp long axis workpiece 10, workbench 6 can drive long axis workpiece 7 to move to the left or to the right, realize the measurement of long axis workpiece different measuring point, motor 1 drives left top 2 to realize long axis workpiece 7 rotations, right top 8 servo-actuated, drive photoelectric encoder 9 rotations.
The present invention is work like this:
(1), the left side top 2 on long axis workpiece 10 use workbenches 6 and right top 8 is clamped;
(2), movable straightening machine workbench 6 is to the rightmost side, long axis workpiece 10 also moves to the rightmost side thereupon; With a left side top 2, rotate long axis workpiece 10 1 weeks, with long axis workpiece 10 tappet rod type displacement measuring device 1, tappet rod type displacement measuring device 24, tappet rod type displacement measuring device 35 below, record a weekly data of three points of this workpiece;
(3), the workbench 6 of movable straightening machine to the left, with left top 2, rotate long axis workpiece 10 1 weeks again, with long axis workpiece 10 tappet rod type displacement measuring device 1, tappet rod type displacement measuring device 24, tappet rod type displacement measuring device 35 below, record a weekly data of these three points of this workpiece, referring to Fig. 2;
(4), continue above-mentioned process, until long axis workpiece 10 moves to left-most position on straightener, thereby the data of all measurement points of this workpiece are all measured;
(5), these data are carried out to the after-treatment of relative measurement algorithm, concrete grammar is as follows:
A. obtain sensor in some tappet rod type displacement measuring devices with respect to the relative variation of sensor in the tappet rod type displacement measuring device of both sides, referring to Fig. 3, home position is at A, B, C, and reposition is at a, b, c, from formula below, can calculate the variation that the relative a point of b point and c are ordered:
Y=Xb?-（Xa+L1×（Xc-Xa）/（L1+L2））
Wherein: Y is the absolute deformation that b is ordered, Xa be a point to A point distance, Xb be b point to B point distance, Xc be c point to C point distance, L1 be A to B distance, L2 is that B is to the distance of C;
B. selected current measurement point is b, and two-sided measurement point is respectively a and c, according to relative measurement method formula, a weekly data of these 3 points is calculated respectively, forms one group of new data; By this method, measure long axis workpiece 10 with respect to the radial beat eccentricity of two ends reference point and measure long axis workpiece 10 local radial jerk values;
C. constantly repeat b step, until form the relative measurement data of many group leaders shaft-like work 10 whole and parts;
(6) many groups of obtaining cenotype of step (five) is analyzed measurement data, to obtain peak and the angle corresponding to peak of many suites line, in order to eliminate oval error, the impact that burr error is brought, adopt FFT to process data, take out amplitude and the peak angle of the sinusoidal line of 1Hz, like this, just realized the analytic process to all data of alignment workpiece, FFT can form 2Hz, the amplitude of the signal of the multiple rates such as 3Hz and maximum amplitude point angle, if have ellipse and burr on workpiece, all belong to signal more than 2Hz, if we only extract the data of 1Hz signal, just can eliminate oval error and surface of the work burr error, referring to Fig. 4.
Claims (1)
1. a straightener long axis workpiece circular runout measuring method, is characterized in that comprising the following steps:
(1), by long axis workpiece with the left side on workbench top and right top clamping, on described workbench, have left top and right top, this workbench and table rest are slidably connected, motor and left top being rotationally connected, photoelectric encoder and right top being fixedly connected with, tappet rod type displacement measuring device one, tappet rod type displacement measuring device two, tappet rod type displacement measuring device three are fixedly connected with table rest respectively;
(2), movable straightening machine workbench is to the table rest rightmost side, long axis workpiece also moves to the table rest rightmost side thereupon; With the top rotation long axis workpiece in a left side one week, with tappet rod type displacement measuring device one, tappet rod type displacement measuring device two, tappet rod type displacement measuring device three below long axis workpiece, record a weekly data of three measurement points of this workpiece;
(3), to the workbench of table rest left side movable straightening machine, use again left top rotation long axis workpiece one week, with tappet rod type displacement measuring device one, tappet rod type displacement measuring device two, tappet rod type displacement measuring device three below long axis workpiece, record a weekly data of these three measurement points of this workpiece;
(4), continue said process, until long axis workpiece moves to table rest left-most position on straightener, thereby the data of all measurement points of this long axis workpiece are all measured;
(5), these data are carried out to the after-treatment of relative measurement algorithm, concrete grammar is as follows:
A. the sensor in the middle of obtaining in tappet rod type displacement measuring device is with respect to the relative variation of sensor in the tappet rod type displacement measuring device of both sides, the home position of the sensor in the tappet rod type displacement measuring device of three of left, center, right is respectively at A, B, C, reposition is respectively at a, b, c, from formula below, can calculate the variable quantity that the relative a point of b point and c are ordered:
Y=Xb-（Xa+L1×（Xc-Xa）/（L1+L2））
Wherein: Y is the variable quantity that the relative a point of b point and c are ordered, and this value is the absolute deformation that b is ordered, Xa be a point to A point distance, Xb be b point to B point distance, Xc be c point to C point distance, L1 be A to B distance, L2 is that B is to the distance of C;
B. the reposition b of the sensor in selected middle tappet rod type displacement measuring device is current measurement point, and its two-sided measurement point is respectively a and c, according to relative measurement method formula, a weekly data of these 3 points is calculated respectively, forms one group of new data; By this method, measure the current measurement point of long axis workpiece with respect to overall radial jerk value and the local radial beat eccentricity of left end measurement point a and right-hand member measurement point c;
C. constantly repeat b step, until form the current measurement point of many group leaders shaft-like work with respect to the relative measurement data of overall radial jerk value and the long axis workpiece local radial jerk value of left end measurement point a and right-hand member measurement point c;
(6), many groups of the obtaining relative measurement data analysis to step (five), to obtain peak and the angle corresponding to peak of many suites line, the impact bringing in order to eliminate oval error, burr error, adopt FFT to process described relative measurement data, take out amplitude and the peak angle of the sinusoidal line of 1Hz, like this, just realized the analytic process to all data of long axis workpiece.
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| CN201110445111.XA CN102513410B (en) | 2011-12-27 | 2011-12-27 | Radial runout measuring method for straightening machine long axis workpiece, and device thereof |
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| CN201110445111.XA CN102513410B (en) | 2011-12-27 | 2011-12-27 | Radial runout measuring method for straightening machine long axis workpiece, and device thereof |
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| CN102513410B true CN102513410B (en) | 2014-01-29 |
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Families Citing this family (9)
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| CN103394550A (en) * | 2013-07-29 | 2013-11-20 | 长春机械科学研究院有限公司 | Non-contact straightening point confirming method for straightness of rectangular-section long-rail work piece |
| CN104482848A (en) * | 2014-12-10 | 2015-04-01 | 南通瑞力体育用品有限公司 | Measuring and straightening integrated equipment and measuring method |
| CN105598753A (en) * | 2015-12-28 | 2016-05-25 | 常熟市尚高机械设备有限公司 | Device special for grinding thin and long stainless steel shaft |
| CN108500837B (en) * | 2017-09-19 | 2019-08-27 | 万向钱潮股份有限公司 | A kind of shaft aligning method that flawless generates |
| CN108856367A (en) * | 2018-05-24 | 2018-11-23 | 哈尔滨汽轮机厂有限责任公司 | A kind of valve rod bending deformation straightening technology |
| CN110586698A (en) * | 2019-10-29 | 2019-12-20 | 重庆和坊机械有限责任公司 | Ultralong shaft straightening machine |
| CN111842553B (en) * | 2020-07-30 | 2022-04-01 | 成都光明派特贵金属有限公司 | Method for straightening main shaft of noble metal stirring rod |
| CN112192320B (en) * | 2020-09-23 | 2021-10-22 | 常州机电职业技术学院 | Device and method for detecting maximum deformation of workpiece in four-axis numerical control machine tool machining |
| CN113231492B (en) * | 2021-07-08 | 2021-09-28 | 南通市力行机械制造有限公司 | Straightening device for production and processing of weight lifting rod |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201329377Y (en) * | 2008-11-28 | 2009-10-21 | 成都鼎胜科技发展有限责任公司 | Drilling tool hydraulic full automatic straightening machine |
| CN101862767A (en) * | 2010-05-27 | 2010-10-20 | 中国海洋石油总公司 | Automation straightener for drilling tool |
| CN201644560U (en) * | 2010-03-23 | 2010-11-24 | 龙岩市山力工程液压有限公司 | Hydraulic corrector |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201329377Y (en) * | 2008-11-28 | 2009-10-21 | 成都鼎胜科技发展有限责任公司 | Drilling tool hydraulic full automatic straightening machine |
| CN201644560U (en) * | 2010-03-23 | 2010-11-24 | 龙岩市山力工程液压有限公司 | Hydraulic corrector |
| CN101862767A (en) * | 2010-05-27 | 2010-10-20 | 中国海洋石油总公司 | Automation straightener for drilling tool |
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