CN102554549A - Precision detection and correction method of seamless tube roller rack - Google Patents
Precision detection and correction method of seamless tube roller rack Download PDFInfo
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- CN102554549A CN102554549A CN2010105883807A CN201010588380A CN102554549A CN 102554549 A CN102554549 A CN 102554549A CN 2010105883807 A CN2010105883807 A CN 2010105883807A CN 201010588380 A CN201010588380 A CN 201010588380A CN 102554549 A CN102554549 A CN 102554549A
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Abstract
The invention provides a precision detection and correction method of a seamless tube roller rack. A three-dimensional coordinate measuring instrument is adopted to carry out monomer machining precision detection and correction on a seamless tube roller rack and an oscillating arm before the seamless tube roller rack and the oscillating arm are out off a factory, and combination precision detection and correction is carried out on an assembled roller rack, so that center deviation with a hole shape formed by three rollers can be ensured to meet standard requirements, one-time investment can be reduced, and localization degree of the seamless tube roller rack is improved. The method is simple and practical, convenient to master and operate and high in detection precision; and the largest hole-shaped center deviation error is 0.054mm, and the smallest hole-shaped center deviation error is only 0.008mm, so that the largest hole-shaped center deviation value is further less than that of an import roller rack, quality and product percent of pass of the seamless tube roller rack are improved, production quality of the seamless tube is improved correspondingly, repair work load is reduced, and economic losses due to detection in different places or repair by returning to the factory can be avoided.
Description
Technical field
The invention belongs to the mechanical detection field, relate in particular to a kind of drift correction method that the machining accuracy of seamless pipe roll stand before dispatching from the factory detects that is used for.
Background technology
At present, domestic many seamless pipe tandem mills all adopt 63 roller mills, and this milling train is the complete set of equipments from external introduction mostly.Because the roll stand of import costs an arm and a leg, and need to use foreign exchange to buy, therefore domestic milling train manufacturer falls over each other on the basis that digestion is introduced technology, to domesticize and form a complete production network.
Yet,, therefore lack pass station and the special equipment that is specifically designed to the detection of seamless pipe roll stand because seldom there is the special manufacturer of special production seamless pipe roll stand in domestic roll manufacturer; Can't carry out accuracy detection and drift correction to the roll stand before dispatching from the factory; Thereby making the formed pass off-centring of three rolls after the assembling, its side-play amount reached ± more than the 0.5mm, cause the pass torsional deformation; Precision is overproof, and is off quality and can't use.For addressing the above problem, though each roll stand factory tries every means, all effect is not remarkable, and it is still of common occurrence that the roll stand of producing is all returned the multiple phenomenon of repair in shop, has directly influenced the localization process of seamless pipe roll stand.Therefore, how under the condition of not introducing and set up the pass station, realize the accuracy detection before the seamless pipe roll stand dispatches from the factory, thereby produce qualified roll stand, just become the important topic that the seamless pipe roll stand is produced.
Summary of the invention
The object of the invention aims to provide a kind of simple, and is convenient and reliable, can carry out comprehensive accuracy detection and drift correction to the seamless pipe roll stand before dispatching from the factory, and avoids the pass off-centring overproof, thereby produces the method for qualified roll stand.For this reason, the present invention has taked following technical solution:
A kind of seamless pipe roll stand accuracy detection modification method; Adopt three-dimensional coordinate measuring instrument that seamless pipe roll stand before dispatching from the factory and swing arm are carried out detection of monomer machining accuracy and correction; And the roll stand after the assembling made up accuracy detection and correction, guarantee that the pass centre deviation that three rolls form reaches standard-required.
Step is revised in its concrete detection and method is:
1, pass design centre point is confirmed to detect correction with frame:
Frame is placed on the monitor station; Utilize the three-dimensional coordinate measuring instrument gauge head to detect the position of three swing arm axle axis hole outer walls on the frame; Computer generates and writes down the position measured data of each swing arm axle axis hole central point automatically; And three swing arm axles of line axis hole actual measurement central point justifies, and this centre point is pass design centre point.
Position data and design drawing contrast with each the swing arm axle axis hole central point that records:
Whether a, three axle axis holes of contrast meet the tolerance on the drawing to the center of circle apart from size;
Whether b, three axle axis holes of contrast meet the tolerance on the drawing to the angle between the line in the center of circle.
More than two any one overproofly all to former arbor hole be strengthened with machining process, the edge method of overlapping again bore hole is revised again, until reaching designing requirement.
2, the swing arm monomer detects and revises:
Three swing arms are placed on the monitor station; Detect X axle, Y shaft size and each swing arm axle axis hole central point that each swing arm axle axis hole central point is fitted to each other the face central point apart from roll shaft are fitted to each other the face central point apart from roll shaft air line distance one by one with three-dimensional coordinate measuring instrument; Computer is automatically with measured data and design size contrast, if actual measurement size and design size deviation are less than the permissible variation value
δ, it is qualified that this swing arm is regarded as; If deviation is greater than the permissible variation value
δ, then need the machining correction is carried out in overproof swing arm, and detect again, until up to standard.
3, combination accuracy detection correction:
After frame that above-mentioned detection correction is qualified and the swing arm assembling, utilize three-dimensional coordinate measuring instrument to make up the accuracy detection correction.
A, make the cylinder that 3 swing arm axle axis surround with three-dimensional coordinate measuring instrument, if pass design centre point overlaps with this cylinder axis or deviation less than the permissible variation value
δ, it is qualified then to be regarded as; Otherwise then be defective, and after detecting again and revise according to step 1,2, assembling detect to up to standard again.
B, with 3 swing arm axle central points respectively with pass design centre point line, measure 3 roll shafts respectively and be fitted to each other face to the vertical range of this swing arm axle line, and with the design size contrast, if dimensional discrepancy is less than the permissible variation value
δ, it is qualified then to be regarded as; Otherwise, need overproof swing arm is pulled down, set by step 1,2 detect processing again after, give assembling again and detect to up to standard.
C, make vertical vertical plane that 3 roll shafts are fitted to each other the face central point respectively with three-dimensional coordinate measuring instrument; And 3 vertical planes are intersected in twos; Form three vertical plane intersections; Detect the deviate of pass design centre point and three intersections respectively, if two intersections overlap and pass design centre point also on the intersection of coincidence, then assert zero deflection.If the distance of two intersections and pass design centre point is all less than the permissible variation value
δ, it is qualified then to be regarded as; If two in the intersection distance of arbitrary intersection and pass design centre point greater than the permissible variation value
δ, all according to overproof processing, need overproof swing arm is pulled down, set by step 1,2 detect processing again after, give the assembling detection again until reaching standard-required.
4, positioner size and positional precision detect and revise:
After the correction of combination accuracy detection is qualified, also will position device is that locating piece and slide plate size, position and form accuracy detect correction.
Whether a, detect 4 locating pieces respectively and adhere to specification to pass design centre point vertical range size, size is adjusted within the margin of tolerance less than the cushioning of tolerance; Size greater than tolerance then need locating piece is carried out grinding within the margin of tolerance.
Whether b, detect 2 slide plates respectively and adhere to specification to pass design centre point vertical range size, size is adjusted within the margin of tolerance less than the cushioning of tolerance; Size then need be machined within the margin of tolerance slide plate greater than tolerance.
Described permissible variation value
δ≤0.1mm.
Beneficial effect of the present invention is:
Adopt three-dimensional coordinate measuring instrument to replace the pass station that the seamless pipe roll stand before dispatching from the factory is detected, can reduce one-time investment, improve the production domesticization degree of seamless pipe roll stand.Method is simple and practical, be convenient to grasp and operation, and accuracy of detection is higher; Its pass center peak excursion error is 0.054mm, and the smallest offset error only has 0.008mm, and the pass center peak excursion error amount of import roll stand is 0.3mm; Thereby in the quality and product percent of pass that improve the seamless pipe roll stand; The corresponding product quality that improves seamless pipe reduces the repair amount, has avoided detecting or return the multiple economic loss that is caused of repair in shop because of the strange land.
Description of drawings
Accompanying drawing detects sketch map for the assembling of seamless pipe roll stand.
Among the figure: axle 1, axle sleeve 2, swing arm 3, locating piece 4, pass design centre point 5, frame 6, roll shaft are fitted to each other face 7, slide plate 8.
The specific embodiment
With φ 177 mm hot seamless tube roll stands is example, the permissible variation value of regulation
δ≤0.1mm.Visible by accompanying drawing, the seamless pipe roll stand mainly is made up of swing arm 3 and 6 of frames, and swing arm 3 links together through axle 1 with frame 6, needs swing arm 3 is opened to make things convenient for the dismounting of roll when dismounting or installation roll.Before and after the bottom of frame 6, be separately installed with a slide plate 8, frame respectively is installed on a locating piece 4 in the both sides, front and back of left end head about in the of 6, promptly is provided with 4 locating pieces 4 altogether.Simultaneously, on frame 6, be evenly equipped with 3 arbor holes, as axle 1 is installed.Swing arm 3 has 3, and its shape, measure-alike is the shape of cranking arm, and a thinner end is provided with axis hole, is inlaid with axle sleeve 2 in the axis hole, be connected through axle 1 in the arbor hole of frame 6, and bigger another of section section has roll shaft and is fitted to each other face 7.
Seamless pipe roll stand accuracy detection modification method; It is [LMAGE203315] planer-type three-dimensional coordinate measuring instrument that system adopts model; Seamless pipe roll stand 6 before dispatching from the factory and 3 swing arms 3 are carried out detection of monomer machining accuracy and correction respectively; And the roll stand 6 after the assembling carried out aggregate erection accuracy detection and correction, thereby guarantee that pass centre deviation that three rolls form within the permissible variation scope, satisfies seamless pipe production technology and quality requirement.
Concrete detection correction step of the present invention and method are:
1, the detection correction of the definite and frame 6 of pass design centre point 5:
(1), pass design centre point 5 is confirmed:
The frame that swing arm 3 is not installed as yet 6 is placed on the monitor station of three-dimensional coordinate measuring instrument next door.At first be to utilize the three-dimensional coordinate measuring instrument gauge head to detect the position of confirming three swing arm axle axis hole outer walls on the frame 6, computer can generate and write down the physical location of each swing arm axle axis hole central point automatically according to measured data.Then, computer, is made the connection circle of actual measurement central point, and is determined home position three swing arm axles of automatic connecting axis hole actual measurement central point according to instruction.This centre point is the pass design centre point 5 of frame 6.
(2), frame 6 precision are judged:
Actual location data and design drawing contrast with actual each the swing arm axle axis hole central point that records should meet the following conditions:
A, three axle axis holes to the center of circle apart from 900 ± 0.045 tolerances on the size conforms drawing;
B, three axle axis holes meet tolerance α≤0.0056 ° on the drawing to the angle between the circle center line connecting.
Having any one not satisfy like above-mentioned two conditions all will strengthen former arbor hole with machining process; Inlay the method for overlapping again bore hole again and process correction; Axle axis hole position until frame 6 reaches standard-required, thereby guarantees the machining accuracy of frame 6 itself.。
2, swing arm 3 monomers detect and revise:
According to the design drawing dimensional requirement; The axle axis hole central point of φ 177 mm hot seamless tube roll stand swing arms 3 is 900 mm apart from the X shaft size that roll shaft is fitted to each other face 7 centers; The Y shaft size is 730 mm, and axle axis hole central point is fitted to each other the air line distance L=1158.8 mm of face 7 central points to roll shaft.
Place a swing arm 3 on the monitor station separately; The axle axis hole central point that detects this swing arm 3 with three-dimensional coordinate measuring instrument is fitted to each other face 7 apart from roll shaft X axle, Y shaft size and each swing arm axle axis hole central point is fitted to each other the air line distance L of face central point apart from roll shaft, and computer contrasts measured data and design size automatically.If the axle axis hole central point of actual measurement swing arm 3 is fitted to each other face 7 centers apart from roll shaft X shaft size between 899.93～900.07 mm, the Y shaft size between 729.938～730.062mm, L between 1158.7～1158.9 mm then this swing arm 3 be regarded as qualified.If X axle, Y axle or the arbitrary dimensional discrepancy＞0.1mm of L all need the machining correction is carried out in overproof swing arm 3, and detect again as stated above, until up to standard.After first swing arm 3 monomers have detected, can carry out monomer to second and third swing arm 3 again by this way and detect and drift correction, to guarantee the monomer machining accuracy of 3 swing arms 3.
3, the accuracy detection correction after swing arm 3 is made up with frame 6:
After above-mentioned detection and revising qualified frame 6 and swing arm 3 assemblings, utilize three-dimensional coordinate measuring instrument to make up the accuracy detection correction.Concrete grammar is:
At first; Make vertical vertical plane that 3 roll shafts are fitted to each other face 7 central points respectively with three-dimensional coordinate measuring instrument; And 3 vertical planes are intersected in twos, and form three vertical plane intersections, detect the deviate of pass design centre point 5 and three intersections respectively; If two intersections overlap and pass design centre point 5 also on the intersection of coincidence, then assert zero deflection.If the distance of two intersections and pass design centre point 5 is all less than the permissible variation value
δ, it is qualified then to be regarded as; If two in the intersection distance of arbitrary intersection and pass design centre point 5 greater than the permissible variation value
δ, all according to overproof processing, need overproof swing arm is pulled down, set by step 1,2 detect processing again after, give assembling again and detect until up to standard, thus the installation accuracy of assurance swing arm 3.
Secondly, the axle central point of 3 swing arms 3 is put 5 lines with the pass design centre respectively, measure 3 roll shafts respectively and be fitted to each other the vertical range of face 7, and contrast with design size to these swing arm 3 axle lines.3 swing arms, the 3 axle lines of design are 730 ± 0.062mm apart from the vertical range that 3 roll shafts are fitted to each other face 7, if survey dimensional discrepancy within 729.938～730.06 mm, it is qualified then to be regarded as; If deviation is within 729.938～730.06 mm, then need overproof swing arm 3 is pulled down, set by step 3 detect processing again after, give assembling again and detect to up to standard, guarantee that axle 1 and roll shaft are fitted to each other the installation accuracy of face 7.
In addition, make vertical vertical plane that 3 roll shafts are fitted to each other face 7 central points respectively, and 3 vertical planes are intersected in twos, form the intersection of two vertical planes with three-dimensional coordinate measuring instrument; Detect the deviate of pass design centre point 5 and two intersections respectively, if two intersections overlap and pass design centre point 5 also on the intersection that overlaps, explanation installation zero deflection then.If two intersections and the distance of pass design centre point 5 be equal≤0.1mm, and it is qualified then to be regarded as.If two the distance＞0.1mm of arbitrary intersection and pass design centre point 5 in the intersection all need pull down overproof swing arm 3, set by step 3 detect processing again after, give assembling again and detect to reaching standard-required.
4, locating piece 4 detects with slide plate 8 sizes and positional precision and revises:
After the correction of combination accuracy detection is qualified, also will position device is that locating piece 4 detects correction with slide plate 8 sizes, position and form accuracy:
Whether a, detect 4 locating pieces 4 respectively and put 5 vertical range sizes to the pass design centre and adhere to specification, size is adjusted within the margin of tolerance less than the cushioning of tolerance; Size greater than tolerance then need locating piece is carried out grinding within the margin of tolerance.
Whether b, detect 2 slide plates 8 respectively and put 5 vertical range sizes to the pass design centre and adhere to specification, size is adjusted in the margin of tolerance less than the cushioning of tolerance; Size then need be machined within the margin of tolerance slide plate 8 greater than tolerance, and is consistent with the mill housing center to guarantee roll stand 6.
Size, position or the shape of above-mentioned frame axle axis hole or swing arm arbor hole is overproof to need to adopt the method that former axis hole increasing edge is overlapped again bore hole to revise.
Claims (3)
1. seamless pipe roll stand accuracy detection modification method; It is characterized in that; Adopt three-dimensional coordinate measuring instrument that seamless pipe roll stand before dispatching from the factory and swing arm are carried out detection of monomer machining accuracy and correction; And the roll stand after the assembling made up accuracy detection and correction, guarantee that the pass centre deviation that three rolls form reaches standard-required.
2. seamless pipe roll stand accuracy detection modification method according to claim 1 is characterized in that, step is revised in concrete detection and method is:
(1), pass design centre point is confirmed to detect correction with frame:
Frame is placed on the monitor station; Utilize the three-dimensional coordinate measuring instrument gauge head to detect the position of three swing arm axle axis hole outer walls on the frame; Computer generates and writes down the position measured data of each swing arm axle axis hole central point automatically; And three swing arm axles of line axis hole actual measurement central point justifies, and this centre point is pass design centre point;
Position data and design drawing contrast with each the swing arm axle axis hole central point that records:
Whether a, three axle axis holes of contrast meet the tolerance on the drawing to the center of circle apart from size;
Whether b, three axle axis holes of contrast meet the tolerance on the drawing to the angle between the line in the center of circle;
More than two any one overproofly all to former arbor hole be strengthened with machining process, the edge method of overlapping again bore hole is revised again, until reaching designing requirement;
(2), the swing arm monomer detects and revises:
Three swing arms are placed on the monitor station; Detect X axle, Y shaft size and each swing arm axle axis hole central point that each swing arm axle axis hole central point is fitted to each other the face central point apart from roll shaft are fitted to each other the face central point apart from roll shaft air line distance one by one with three-dimensional coordinate measuring instrument; Computer is automatically with measured data and design size contrast, if actual measurement size and design size deviation are less than the permissible variation value
δ, it is qualified that this swing arm is regarded as; If deviation is greater than the permissible variation value
δ, then need the machining correction is carried out in overproof swing arm, and detect again, until up to standard;
(3), combination accuracy detection correction:
After frame that above-mentioned detection correction is qualified and the swing arm assembling, utilize three-dimensional coordinate measuring instrument to make up the accuracy detection correction;
A, make the cylinder that 3 swing arm axle axis surround with three-dimensional coordinate measuring instrument, if pass design centre point overlaps with this cylinder axis or deviation less than the permissible variation value
δ, it is qualified then to be regarded as; Otherwise then be defective, and after detecting again and revise according to step (1), (2), assembling detect to up to standard again;
B, with 3 swing arm axle central points respectively with pass design centre point line, measure 3 roll shafts respectively and be fitted to each other face to the vertical range of this swing arm axle line, and with the design size contrast, if dimensional discrepancy is less than the permissible variation value
δ, it is qualified then to be regarded as; Otherwise, need overproof swing arm is pulled down, after (1), (2) are detected processing again set by step, give assembling again and detect to up to standard;
C, make vertical vertical plane that 3 roll shafts are fitted to each other the face central point respectively with three-dimensional coordinate measuring instrument; And 3 vertical planes are intersected in twos; Form three vertical plane intersections; Detect the deviate of pass design centre point and three intersections respectively, if two intersections overlap and pass design centre point also on the intersection of coincidence, then assert zero deflection; If the distance of two intersections and pass design centre point is all less than the permissible variation value
δ, it is qualified then to be regarded as; If two in the intersection distance of arbitrary intersection and pass design centre point greater than the permissible variation value
δ, all according to overproof processing, need overproof swing arm is pulled down, after (1), (2) are detected processing again set by step, give assembling again and detect until reaching standard-required;
(4), positioner size and positional precision detect and revise:
After the correction of combination accuracy detection is qualified, also will position device is that locating piece and slide plate size, position and form accuracy detect correction;
Whether a, detect 4 locating pieces respectively and adhere to specification to pass design centre point vertical range size, size is adjusted within the margin of tolerance less than the cushioning of tolerance; Size greater than tolerance then need locating piece is carried out grinding within the margin of tolerance;
Whether b, detect 2 slide plates respectively and adhere to specification to pass design centre point vertical range size, size is adjusted within the margin of tolerance less than the cushioning of tolerance; Size then need be machined within the margin of tolerance slide plate greater than tolerance.
3. seamless pipe roll stand accuracy detection modification method according to claim 1 is characterized in that described permissible variation value
δ≤0.1mm.
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| CN201010588380.7A CN102554549B (en) | 2010-12-15 | 2010-12-15 | Precision detection and correction method of seamless tube roller rack |
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| CN201010588380.7A CN102554549B (en) | 2010-12-15 | 2010-12-15 | Precision detection and correction method of seamless tube roller rack |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107252826A (en) * | 2017-06-22 | 2017-10-17 | 太原重工股份有限公司 | Tandem rolling tube machine pass calibrating installation |
| CN107626752A (en) * | 2016-07-18 | 2018-01-26 | 鞍钢股份有限公司 | A kind of bearing calibration of roll pass station |
| CN114880794A (en) * | 2022-04-25 | 2022-08-09 | 华侨大学 | Repair method, device, medium and equipment for prolonging service life of section steel roller |
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|---|---|---|---|---|
| JPS6123906A (en) * | 1984-07-13 | 1986-02-01 | Toyota Motor Corp | Method and device for measuring deviation of work |
| CN1892175A (en) * | 2005-07-08 | 2007-01-10 | 鸿富锦精密工业（深圳）有限公司 | Three-coordinate measuring machine-tool error compensation system and method |
| CN101694374A (en) * | 2009-10-20 | 2010-04-14 | 西安交通大学 | Rapid detecting device and detecting method of precision of blades of gas turbine |
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2010
- 2010-12-15 CN CN201010588380.7A patent/CN102554549B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6123906A (en) * | 1984-07-13 | 1986-02-01 | Toyota Motor Corp | Method and device for measuring deviation of work |
| CN1892175A (en) * | 2005-07-08 | 2007-01-10 | 鸿富锦精密工业（深圳）有限公司 | Three-coordinate measuring machine-tool error compensation system and method |
| CN101694374A (en) * | 2009-10-20 | 2010-04-14 | 西安交通大学 | Rapid detecting device and detecting method of precision of blades of gas turbine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107626752A (en) * | 2016-07-18 | 2018-01-26 | 鞍钢股份有限公司 | A kind of bearing calibration of roll pass station |
| CN107252826A (en) * | 2017-06-22 | 2017-10-17 | 太原重工股份有限公司 | Tandem rolling tube machine pass calibrating installation |
| CN107252826B (en) * | 2017-06-22 | 2018-11-23 | 太原重工股份有限公司 | Tandem rolling tube machine pass calibrating installation |
| CN114880794A (en) * | 2022-04-25 | 2022-08-09 | 华侨大学 | Repair method, device, medium and equipment for prolonging service life of section steel roller |
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| CN102554549B (en) | 2014-04-02 |
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