CN112857265B - Method for constructing center line of hidden point rolling mill by laser tracker - Google Patents
Method for constructing center line of hidden point rolling mill by laser tracker Download PDFInfo
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- CN112857265B CN112857265B CN202110036259.1A CN202110036259A CN112857265B CN 112857265 B CN112857265 B CN 112857265B CN 202110036259 A CN202110036259 A CN 202110036259A CN 112857265 B CN112857265 B CN 112857265B
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- theodolite
- target
- laser tracker
- rolling mill
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C1/00—Measuring angles
- G01C1/02—Theodolites
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a method for constructing a hidden point rolling mill central line by a laser tracker, which is characterized in that the condition that the center line is lofted by the laser tracker is not met because the shielding of the transmission side of a rolling mill is more, the center line of the rolling mill is lofted by the cooperation of the laser tracker and a theodolite, a control point is established, and the transmission side center point is guided back to be used by the laser tracker by the theodolite during each measurement.
Description
Technical Field
The invention relates to the field of industrial digital measurement, in particular to a method for constructing a center line of a hidden point rolling mill by using a laser tracker.
Background
The invention provides a control point which accords with the measurement of a laser tracker under the condition that more shelters exist in a plurality of shelters (without a communication condition). This method is not required when the visibility condition is satisfied.
Disclosure of Invention
The invention aims to provide a method for constructing a hidden point rolling mill central line by a laser tracker, which utilizes the cooperation of the laser tracker and a theodolite to loft the rolling mill central line because the shielding of the transmission side of a rolling mill is more and the condition of lofting the central line by the laser tracker is not met, and utilizes the theodolite to guide the transmission side central point back for the laser tracker to use during each measurement.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention discloses a method for constructing a center line of a hidden point rolling mill by a laser tracker, which comprises the following steps:
1) firstly, leveling and calibrating a laser tracker, measuring a rolling mill by using the laser tracker, and finding out central points of an operation side and a transmission side of the rolling mill;
2) finding the central points of the transmission side and the operation side by using the target ball and the base of the tracker, respectively and firmly fixing the two bases by using glue, wherein if the operation side has a control point meeting the standard, the operation side can not carry out the step, then the base of the operation side is marked as the position A, and the base of the transmission side is marked as the position B;
3) placing a theodolite hemispherical target on a base at the position A, erecting a theodolite at a position above the position A, and adjusting the theodolite to enable the theodolite to be centered and leveled;
4) placing the theodolite hemispherical target on the position B, aiming at the center of the theodolite hemispherical target on the position B by using a theodolite, and braking the theodolite in the horizontal direction;
5) rotating the theodolite sighting part, projecting points to a stable part with lofting conditions, fixing a base for placing the theodolite hemispherical target to the sighting part, and recording the position as the position C, so that the cross wire of the theodolite is aligned with the central point of the theodolite hemispherical target and is firmly fixed;
6) when the worn rolling mill is measured again by using the laser tracker, the theodolite semispherical target is placed at the position A, the theodolite is erected at the position above the position A, and the theodolite is adjusted to center and level the theodolite;
7) placing the theodolite hemispherical target on the position C, aiming at the center of the theodolite hemispherical target at the position C by using the theodolite, and braking the theodolite in the horizontal direction;
8) rotating the theodolite sighting part, projecting points to a relatively stable part on the transmission side of the rolling mill, fixing a base for placing the theodolite hemispherical target to the sighting part, and recording the position as a D position so that a theodolite cross wire is aligned with the theodolite hemispherical target central point and is firmly fixed;
9) and placing target balls of the laser tracker at the position D and the position A, and detecting corresponding position coordinates through the laser tracker to determine the central position of the rolling mill for the laser tracker to use.
Further, the theodolite is centered with the A-position theodolite hemisphere target center in the step 3).
Further, the theodolite is centered with the A-position theodolite hemisphere target center in the step 6).
Compared with the prior art, the invention has the beneficial technical effects that:
the invention provides a control point which accords with the measurement of a laser tracker under the condition of more shelters, wherein a rolling mill housing is positioned at the center of a rolling mill frame, the shielding of a transmission side is more, and most of control points of a steel mill are lost or damaged, so that the original control points cannot be used in the later measurement.
Drawings
The invention is further illustrated in the following description with reference to the drawings.
FIG. 1 is a schematic flow chart of the steps for building a mill centerline.
FIG. 2 is a schematic illustration of the construction of a mill centerline.
Detailed Description
As shown in fig. 1 and 2, a method for constructing a hidden point rolling mill center line by a laser tracker comprises the following steps:
1) firstly, leveling and calibrating a laser tracker, measuring a rolling mill by using the laser tracker, and finding out central points of an operation side and a transmission side of the rolling mill;
2) the central points of the transmission side and the operation side are found by using the target ball and the base of the tracker, the two bases are firmly fixed by using glue respectively (if the operation side has a control point meeting the standard, the operation side can not carry out the step), the base of the operation side is marked as the position A, and the base of the transmission side is marked as the position B. It is to be noted that the base on the operation side is fixed at a place where the theodolite is erected, the base on the transmission side is fixed at a position where the theodolite and the laser tracker can detect, the base on the A position is a permanent fixed base and needs to be fixed firmly in a welding mode and the like, and the base on the B position can be fixed by glue when the base is zero;
3) placing a theodolite hemispherical target on a base at the position A, erecting a theodolite at a position above the position A, and adjusting the theodolite to enable the theodolite to be centered (centered with the theodolite hemispherical target at the position A) and leveled;
4) placing the theodolite hemispherical target on a B-position base, aiming at the center of the B-position theodolite hemispherical target by using a theodolite, and braking the theodolite in the horizontal direction;
5) the theodolite sighting part is rotated to throw points to a position which is stable and has lofting conditions, and then a base for placing the theodolite hemisphere target is fixed to the sighting position (marked as the position C) so that the theodolite cross wire is aligned with the theodolite hemisphere target central point and is fixed firmly. The C position base is a permanent fixed base and needs to be fixed firmly in a welding mode and the like;
6) when the laser tracker is used for measuring the worn rolling mill again, the theodolite hemispherical target is placed on the base at the position A, the theodolite is erected above the base at the position A, and the theodolite is adjusted to enable the theodolite to be centered (centered with the center of the theodolite hemispherical target at the position A) and leveled;
7) placing the theodolite hemispherical target on the position C, aiming at the center of the theodolite hemispherical target at the position C by using the theodolite, and braking the theodolite in the horizontal direction;
8) the theodolite sighting part is rotated, a point is projected to a relatively stable position on the transmission side of the rolling mill, and then a base for placing the theodolite hemisphere target is fixed to the sighting position (marked as the D position), so that the cross wire of the theodolite is aligned with the theodolite hemisphere target central point and is fixed firmly. It should be noted that the D position base is fixed at the position which can be detected by both the theodolite and the laser tracker, and the D position base can be fixed by glue when the position is zero;
9) and placing target balls of the laser tracker at the position D and the position A, and detecting corresponding position coordinates through the laser tracker to determine the central position of the rolling mill for the laser tracker to utilize.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (3)
1. A method for constructing a center line of a hidden point rolling mill by a laser tracker is characterized by comprising the following steps:
1) firstly, leveling and calibrating a laser tracker, measuring a rolling mill by using the laser tracker, and finding out central points of an operation side and a transmission side of the rolling mill;
2) finding the central points of the transmission side and the operation side by using the target ball and the base of the tracker, respectively and firmly fixing the two bases by using glue, wherein if the operation side has a control point meeting the standard, the operation side can not carry out the step, then the base of the operation side is marked as the position A, and the base of the transmission side is marked as the position B;
3) placing a theodolite hemispherical target on a base at the position A, erecting a theodolite at a position above the position A, and adjusting the theodolite to enable the theodolite to be centered and leveled;
4) placing the theodolite hemispherical target on the position B, aiming at the center of the theodolite hemispherical target on the position B by using a theodolite, and braking the theodolite in the horizontal direction;
5) rotating the theodolite sighting part, projecting points to a stable part with lofting conditions, fixing a base for placing the theodolite hemispherical target to the sighting part, and recording the position as the position C, so that the cross wire of the theodolite is aligned with the central point of the theodolite hemispherical target and is firmly fixed;
6) when the worn rolling mill is measured again by using the laser tracker, the theodolite semispherical target is placed at the position A, the theodolite is erected at the position above the position A, and the theodolite is adjusted to center and level the theodolite;
7) placing the theodolite hemispherical target on the position C, aiming at the center of the theodolite hemispherical target at the position C by using the theodolite, and braking the theodolite in the horizontal direction;
8) rotating a theodolite sighting part, projecting points to a relatively stable part at the transmission side of the rolling mill, fixing a base for placing a theodolite semispherical target to the sighting part, and recording the base as a D position so that a theodolite cross wire is aligned with the theodolite semispherical target central point and is firmly fixed;
9) and placing target balls of the laser tracker at the position D and the position A, and detecting corresponding position coordinates through the laser tracker to determine the central position of the rolling mill for the laser tracker to use.
2. The method for constructing the center line of a blind spot rolling mill by using a laser tracker as claimed in claim 1, wherein the theodolite is centered with the target center of the hemisphere of the theodolite at the A position in the step 3).
3. The method for constructing the center line of a blind spot rolling mill by using a laser tracker in accordance with claim 1, wherein the theodolite is centered with a target center of a hemispherical theodolite at the position A in the step 6).
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| CN202110036259.1A CN112857265B (en) | 2021-01-12 | 2021-01-12 | Method for constructing center line of hidden point rolling mill by laser tracker |
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| CN113917477A (en) * | 2021-10-08 | 2022-01-11 | 安徽创谱仪器科技有限公司 | Method for constructing optical path |
| CN115265362A (en) * | 2022-07-04 | 2022-11-01 | 包头钢铁（集团）有限责任公司 | Measuring method and measuring system for stretch reducer positioning block |
| CN115342742A (en) * | 2022-07-29 | 2022-11-15 | 包头钢铁（集团）有限责任公司 | Bearing clearance measuring method for continuous casting ladle turret |
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