CN102554549B - 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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- CN102554549B CN102554549B CN201010588380.7A CN201010588380A CN102554549B CN 102554549 B CN102554549 B CN 102554549B CN 201010588380 A CN201010588380 A CN 201010588380A CN 102554549 B CN102554549 B CN 102554549B
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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 mechanical detection field, relate in particular to a kind of drift correction method that machining accuracy before dispatching from the factory for seamless tube roller rack detects.
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 is expensive, and need to use foreign exchange to buy, on the basis that therefore domestic milling train manufacturer falls over each other to introduce technology in digestion, domesticize and form a complete production network.
Yet, because seldom there is the special manufacturer of special production seamless tube roller rack in domestic roll manufacturer, therefore lack and be specifically designed to pass station and the special equipment that seamless tube roller rack detects, cannot 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 assembling, its side-play amount reached ± more than 0.5mm, cause pass torsional deformation, precision is overproof, off quality and cannot 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 affected the localization process of seamless tube roller rack.Therefore, how not introduce and to set up under the condition at pass station, the accuracy detection before realizing seamless tube roller rack and dispatching from the factory, thus produce qualified roll stand, just become the important topic that seamless tube roller rack is produced.
Summary of the invention
Object of the present invention aims to provide a kind of simple, convenient and reliable, can carry out comprehensive accuracy detection and drift correction to the seamless tube roller rack before dispatching from the factory, and avoids 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 tube roller rack accuracy detection modification method, adopt three-dimensional coordinate measuring instrument to carry out the detection of monomer machining accuracy and correction to the seamless tube roller rack before dispatching from the factory and swing arm, and the roll stand after assembling is combined to 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 determined and frame detection correction:
Frame is placed on monitor station, utilize three-dimensional coordinate measuring instrument gauge head to detect the position of three swing arm axle axis hole outer walls in frame, computer generates and records the position measured data of each swing arm axle axis hole central point automatically, and three swing arm axle axis holes of line actual measurement central points justify, this centre point is pass design centre point.
The position data of each swing arm axle axis hole central point recording is contrasted with design drawing:
Whether a, three axle axis holes of contrast meet the tolerance on drawing to the distance size in the center of circle;
Whether b, three axle axis holes of contrast meet the tolerance on drawing to the angle between the line in the center of circle.
Above two any one overproofly all former arbor hole to be strengthened with machining process, then the method that edge overlaps again bore hole revises, until reach designing requirement.
2, swing arm monomer detects and revises:
Three swing arms are placed on monitor station, with three-dimensional coordinate measuring instrument, detect one by one X-axis, Y-axis size and each swing arm axle axis hole central point that each swing arm axle axis hole central point is fitted to each other face central point apart from roll shaft and apart from roll shaft, be fitted to each other the air line distance of face central point, computer is automatically by measured data and design size contrast, if actual measurement size and design size deviation are less than permissible variation value
δ, it is qualified that this swing arm is considered as; If deviation is greater than permissible variation value
δ, need overproof swing arm to carry out machining correction, and again detect, until up to standard.
3, combination accuracy detection correction:
Above-mentioned detection is revised after qualified frame and swing arm assembling, utilized three-dimensional coordinate measuring instrument to combine accuracy detection correction.
A, with three-dimensional coordinate measuring instrument, make the cylinder that 3 swing arm axle axis surround, if pass design centre point overlaps with this cylinder axis or deviation is less than permissible variation value
δ, it is qualified to be considered as; Otherwise be defective, and after again detecting and revise according to step 1,2, then assembling detects to up to standard.
B, by 3 swing arm axle central points respectively with pass design centre point line, measure respectively 3 roll shafts and be fitted to each other face to the vertical range of this swing arm axle line, and with design size contrast, if dimensional discrepancy is less than permissible variation value
δ, it is qualified to be considered as; Otherwise, overproof swing arm need be pulled down, by step 1,2, again detect after processing, then give assembling and detect to up to standard.
C, with three-dimensional coordinate measuring instrument, make respectively longitudinal vertical plane that 3 roll shafts are fitted to each other face central point, and 3 vertical planes are intersected between two, form three vertical plane intersections, detect respectively the deviate of pass design centre point and three intersections, if two intersection coincidence and pass design centre point, also on the intersection overlapping, are assert zero deflection.If two the distance of intersection and pass design centre point is all less than permissible variation value
δ, it is qualified to be considered as; If two in intersection, the distance of arbitrary intersection and pass design centre point is greater than permissible variation value
δ, all according to overproof processing, overproof swing arm need be pulled down, by step 1,2, again detect after processing, then give assembling and detect until reach 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.
A, detect 4 locating pieces respectively and whether meet designing requirement to pass design centre point vertical range size, within the cushioning that size is less than tolerance is adjusted to the margin of tolerance; Size be greater than tolerance need locating piece is carried out to grinding within the margin of tolerance.
B, detect 2 slide plates respectively and whether meet designing requirement to pass design centre point vertical range size, within the cushioning that size is less than tolerance is adjusted to the margin of tolerance; Size be greater than tolerance need slide plate is machined to the margin of tolerance within.
Described permissible variation value
δ≤ 0.1mm.
Beneficial effect of the present invention is:
Adopt three-dimensional coordinate measuring instrument to replace pass station to detect the seamless tube roller rack before dispatching from the factory, can reduce one-time investment, improve the degree domestic of seamless tube roller rack.Method simple practical, be convenient to grasp and operation, and accuracy of detection is higher, its pass center peak excursion error is 0.054mm, and smallest offset error only has 0.008mm, and the pass center peak excursion error amount of import roll stand is 0.3mm, thereby when improving the quality and product percent of pass of seamless tube roller rack, the corresponding product quality that improves seamless pipe, reduces repair amount, has avoided detecting or return the multiple economic loss causing of repair in shop because of strange land.
Accompanying drawing explanation
Accompanying drawing is that seamless tube roller rack assembling detects schematic diagram.
In 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
The φ 177 mm hot seamless tube roll stands of take are example, the permissible variation value of regulation
δ≤ 0.1mm.From accompanying drawing, seamless tube roller rack is mainly consisted of swing arm 3 and frame 6, and swing arm 3 and frame 6 link together by axle 1, when dismounting or installation roll, swing arm 3 need be opened to facilitate the dismounting of roll.Before and after the bottom of frame 6, be separately installed with a slide plate 8, frame is respectively installed on a locating piece 4 in the both sides, front and back of left end head Shang Xia 6, is provided with altogether 4 locating pieces 4.Meanwhile, in 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 crank arm type, and thinner one end is provided with axis hole, is inlaid with axle sleeve 2 in axis hole, be connected in the arbor hole of frame 6, and another larger section of section is fitted to each other face 7 with roll shaft by axle 1.
Seamless tube roller rack accuracy detection modification method, it is [LMAGE203315] planer-type three-dimensional coordinate measuring instrument that system adopts model, seamless tube roller rack 6 before dispatching from the factory and 3 swing arms 3 are carried out respectively to the detection of monomer machining accuracy and correction, and the roll stand 6 after assembling is combined to installation accuracy and detect and revise, thereby guarantee that the pass centre deviation of three rolls formation, within permissible variation scope, meets 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 determined:
The frame 6 that swing arm 3 is not yet installed is placed on the monitor station of three-dimensional coordinate measuring instrument side.First be to utilize three-dimensional coordinate measuring instrument gauge head to detect the position of determining three swing arm axle axis hole outer walls in frame 6, computer can generate and record 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 axle axis hole actual measurement central points of automatic connecting according to instruction.This centre point is the pass design centre point 5 of frame 6.
(2), frame 6 precision are judged:
The actual location data of actual each swing arm axle axis hole central point recording is contrasted with design drawing, should meet the following conditions:
A, three axle axis holes are to 900 ± 0.045 tolerances on the distance size conforms drawing in the center of circle;
B, three axle axis holes meet tolerance α≤0.0056 ° on drawing to the angle between circle center line connecting.
As above-mentioned two conditions have any one, do not meet and all former arbor hole will be strengthened with machining process; the method that edge overlaps again bore hole is again processed correction; until the axle axis hole position of frame 6 reaches standard-required, thereby guarantee the machining accuracy that frame 6 is own.。
2, swing arm 3 monomers detect and revise:
According to design drawing dimensional requirement, the X-axis that the axle axis hole central point of φ 177 mm hot seamless tube roll stand swing arms 3 is fitted to each other face 7 centers apart from roll shaft is of a size of 900 mm, Y-axis is of a size of 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.
One swing arm 3 is placed in separately on monitor station, with three-dimensional coordinate measuring instrument, detect X-axis, Y-axis size and each swing arm axle axis hole central point that the axle axis hole central point of this swing arm 3 is fitted to each other face 7 apart from roll shaft and apart from roll shaft, be fitted to each other the air line distance L of face central point, computer is automatically by measured data and design size contrast.If the axle axis hole central point of actual measurement swing arm 3 is fitted to each other face 7 centers X-axis size apart from roll shaft between 899.93～900.07 mm, Y-axis size between 729.938～730.062mm, L between 1158.7～1158.9 mm this swing arm 3 be considered as qualified.If X-axis, Y-axis or L be arbitrary dimensional discrepancy > 0.1mm, all need overproof swing arm 3 to carry out machining correction, and re-start as stated above detection, until up to standard.After first swing arm 3 monomers have detected, can to second and third swing arm 3, carry out monomer detection and drift correction again by this way, to guarantee the monomer machining accuracy of 3 swing arms 3.
3, the accuracy detection correction after swing arm 3 and frame 6 combinations:
By above-mentioned detection and revise qualified frame 6 and swing arm 3 assembling after, utilize three-dimensional coordinate measuring instrument to combine accuracy detection correction.Concrete grammar is:
First, with three-dimensional coordinate measuring instrument, make respectively longitudinal vertical plane that 3 roll shafts are fitted to each other face 7 central points, and 3 vertical planes are intersected between two, form three vertical plane intersections, detect respectively the deviate of pass design centre point 5 and three intersections, if two intersection coincidence and pass design centre point 5, also on the intersection overlapping, are assert zero deflection.If two the distance of intersection and pass design centre point 5 is all less than permissible variation value
δ, it is qualified to be considered as; If two in intersection, the distance of arbitrary intersection and pass design centre point 5 is greater than permissible variation value
δ, all according to overproof processing, overproof swing arm need be pulled down, by step 1,2, again detect after processing, then give that assembling detects until up to standard, thereby guarantee the installation accuracy of swing arm 3.
Secondly, the axle central point of 3 swing arms 3 is put to 5 lines with pass design centre respectively, measure respectively 3 roll shafts and be fitted to each other face 7 to the vertical range of these swing arm 3 axle lines, and contrast with design size.The vertical range that 3 swing arms, the 3 axle lines of design are fitted to each other face 7 apart from 3 roll shafts is 730 ± 0.062mm, if survey dimensional discrepancy within 729.938～730.06 mm, it is qualified to be considered as; If deviation not within 729.938～730.06 mm, needs overproof swing arm 3 to pull down, by step 3, again detect after processing, then give assembling 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, with three-dimensional coordinate measuring instrument, make respectively longitudinal vertical plane that 3 roll shafts are fitted to each other face 7 central points, and 3 vertical planes are intersected between two, form the intersection of two vertical planes; Detect respectively the deviate of pass design centre point 5 and two intersections, if two intersections overlap and pass design centre point 5 also on the intersection overlapping, explanation installation zero deflection.If two the distance of intersection and pass design centre point 5 is all≤0.1mm, and it is qualified to be considered as.If two the distance > 0.1mm of arbitrary intersection and pass design centre point 5 in intersection, all needs overproof swing arm 3 to pull down, by step 3, again detect after processing, then give assembling and detect to reaching standard-required.
4, locating piece 4 detects and revises with slide plate 8 sizes and positional precision:
After the correction of combination accuracy detection is qualified, also will position device is that locating piece 4 detects and revises with slide plate 8 sizes, position and form accuracy:
A, detect 4 locating pieces 4 respectively and to pass design centre, put 5 vertical range sizes and whether meet designing requirement, within the cushioning that size is less than tolerance is adjusted to the margin of tolerance; Size be greater than tolerance need locating piece is carried out to grinding within the margin of tolerance.
B, detect 2 slide plates 8 respectively and to pass design centre, put 5 vertical range sizes and whether meet designing requirement, the cushioning that size is less than tolerance is adjusted in the margin of tolerance; Size be greater than tolerance need slide plate 8 is machined to the margin of tolerance within, consistent with mill housing center to guarantee roll stand 6.
The overproof method that needs employing that former axis hole increasing edge is overlapped again to bore hole of size, position or shape of above-mentioned frame axle axis hole or swing arm arbor hole is revised.
Claims (2)
1. a seamless tube roller rack accuracy detection modification method, it is characterized in that, adopt three-dimensional coordinate measuring instrument to carry out the detection of monomer machining accuracy and correction to the seamless tube roller rack before dispatching from the factory and swing arm, and the roll stand after assembling is combined to accuracy detection and correction, guarantee that the pass centre deviation that three rolls form reaches standard-required; Step is revised in concrete detection and method is:
(1), pass design centre point is determined and frame detection correction:
Frame is placed on monitor station, utilize three-dimensional coordinate measuring instrument gauge head to detect the position of three swing arm axle axis hole outer walls in frame, computer generates and records the position measured data of each swing arm axle axis hole central point automatically, and three swing arm axle axis holes of line actual measurement central points justify, this centre point is pass design centre point;
The position data of each swing arm axle axis hole central point recording is contrasted with design drawing:
Whether a, three axle axis holes of contrast meet the tolerance on drawing to the distance size in the center of circle;
Whether b, three axle axis holes of contrast meet the tolerance on drawing to the angle between the line in the center of circle;
Above two any one overproofly all former arbor hole to be strengthened with machining process, then the method that edge overlaps again bore hole revises, until reach designing requirement;
(2), swing arm monomer detects and revises:
Three swing arms are placed on monitor station, with three-dimensional coordinate measuring instrument, detect one by one X-axis, Y-axis size and each swing arm axle axis hole central point that each swing arm axle axis hole central point is fitted to each other face central point apart from roll shaft and apart from roll shaft, be fitted to each other the air line distance of face central point, computer is automatically by measured data and design size contrast, if actual measurement size and design size deviation are less than permissible variation value δ, it is qualified that this swing arm is considered as; If deviation is greater than permissible variation value δ, needs overproof swing arm to carry out machining correction, and again detect, until up to standard;
(3), combination accuracy detection correction:
Above-mentioned detection is revised after qualified frame and swing arm assembling, utilized three-dimensional coordinate measuring instrument to combine accuracy detection correction;
A, with three-dimensional coordinate measuring instrument, make the cylinder that 3 swing arm axle axis surround, if pass design centre point overlaps with this cylinder axis or deviation is less than permissible variation value δ, it is qualified to be considered as; Otherwise be defective, and after again detecting and revise according to step (1), (2), then assembling detects to up to standard;
B, by 3 swing arm axle central points respectively with pass design centre point line, measure respectively 3 roll shafts and be fitted to each other face to the vertical range of this swing arm axle line, and with design size contrast, if dimensional discrepancy is less than permissible variation value δ, it is qualified to be considered as; Otherwise, overproof swing arm need be pulled down, by step (1), (2), again detect after processing, then give assembling and detect to up to standard;
C, with three-dimensional coordinate measuring instrument, make respectively longitudinal vertical plane that 3 roll shafts are fitted to each other face central point, and 3 vertical planes are intersected between two, form three vertical plane intersections, detect respectively the deviate of pass design centre point and three intersections, if two intersection coincidence and pass design centre point, also on the intersection overlapping, are assert zero deflection; If two the distance of intersection and pass design centre point is all less than permissible variation value δ, it is qualified to be considered as; If two in intersection, the distance of arbitrary intersection and pass design centre point is greater than permissible variation value δ, all according to overproof processing, overproof swing arm need be pulled down, by step (1), (2), again detect after processing, then give assembling and detect until reach 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;
A, detect 4 locating pieces respectively and whether meet designing requirement to pass design centre point vertical range size, within the cushioning that size is less than tolerance is adjusted to the margin of tolerance; Size be greater than tolerance need locating piece is carried out to grinding within the margin of tolerance;
B, detect 2 slide plates respectively and whether meet designing requirement to pass design centre point vertical range size, within the cushioning that size is less than tolerance is adjusted to the margin of tolerance; Size be greater than tolerance need slide plate is machined to the margin of tolerance within.
2. seamless tube roller rack accuracy detection modification method according to claim 1, is characterized in that, described permissible variation value δ≤0.1mm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107626752B (en) * | 2016-07-18 | 2019-08-06 | 鞍钢股份有限公司 | A kind of bearing calibration of roll pass station |
| 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 |
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 |
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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 |
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