CN109458931B - Precision corrector of spiral laser mechanical assembly and correction method thereof - Google Patents
Precision corrector of spiral laser mechanical assembly and correction method thereof Download PDFInfo
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- CN109458931B CN109458931B CN201811599026.7A CN201811599026A CN109458931B CN 109458931 B CN109458931 B CN 109458931B CN 201811599026 A CN201811599026 A CN 201811599026A CN 109458931 B CN109458931 B CN 109458931B
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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
Abstract
The invention relates to a precision corrector of a spiral laser mechanical assembly and a correction method thereof, wherein the precision corrector comprises a control processing chip, a laser measurement unit, a communication module, a serial port module, a functional module interface, a time logic element, a first counter, a second counter, a first crystal oscillator, a second crystal oscillator, a register module, a power supply, a first gravity sensing element, a second gravity sensing element, a vibration sensing element and a plane laser measurement and control unit; the control processing chip judges whether the mechanical assembly is in a stable state or not according to the balance state information and the jitter state information; and the seventh to ninth laser measurement and control elements position the mechanical assembly in a three-dimensional space coordinate, the first to sixth laser measurement and control elements send six groups of laser signals, the control processing chip judges whether the six groups of laser signals are on a logic straight line, and if the six groups of laser signals are stabilized on the logic straight line, the mechanical assembly finishes calibration. The invention can improve the running precision of the equipment and control the fine degree of the whole installation and the processing.
Description
Technical Field
The invention relates to the field of mechanical design and automatic engineering thereof, in particular to a precision corrector of a spiral laser mechanical assembly and a correction method thereof.
Background
At present, the known laser position sensing is formed by end-to-end laser devices in a one-to-one correspondence mode, only one position signal can be tested, but the known laser position sensing cannot be applied to the overall precision control of a mechanical assembly, so that the application planarity and one-sidedness of laser calibration are caused, and the precision of the mechanical device cannot be effectively improved.
The existing laser corresponding correction is to detect three-point coordinates of a component by using a plurality of laser measuring units, a signal control judgment mode is not combined with the running state of equipment, the precision condition cannot be effectively judged, and error signals are easily formed under some complex conditions to cause precision reduction.
The existing laser corresponding correction is independent judgment of a single signal, and a few devices participate in variable calculation. The overall precision distribution condition cannot be judged, and the error is enlarged due to signal distortion. The control means of the measurement signal is single, and a learning system is not formed to optimize the precision correction process. The utilization rate of the laser device is low, and the working signal is not fully utilized. The unreasonable design is assembled on the running mechanical assembly, so that the device is unstable, and the measurement error cannot be effectively reduced because a curing device and a vibration measuring device are not installed.
Disclosure of Invention
In view of the above, the present invention is directed to a precision corrector for a spiral laser mechanical assembly and a correction method thereof, which can improve the overall operation precision of a device, stabilize the rotation speed and the rotation length of a device shaft within a precise value, and control the precision of the assembly and the machining.
The invention is realized by adopting the following scheme: the device comprises a control processing chip, a laser measuring unit, a communication module, a serial port module, a functional module interface, a time logic element, a first counter, a second counter, a first crystal oscillator, a second crystal oscillator, a register module, a power supply, a first gravity sensing element, a second gravity sensing element, a vibration sensing element and a planar laser measurement and control unit;
the laser measuring unit is electrically connected with the control processing chip and used for emitting laser signals on a logic linear track, positioning the mechanical assembly in a three-dimensional space coordinate and sending information of the emitted laser signals and positioning information to the control processing chip; the first gravity sensing element, the second gravity sensing element and the vibration sensing element are electrically connected with the control processing chip and are used for respectively transmitting the measured balance state parameters of the mechanical assembly and the jitter state parameters of the mechanical assembly to the control processing chip; the plane laser measurement and control unit is electrically connected with the control processing chip and used for judging whether the shaft center point of the mechanical assembly is in a three-dimensional coordinate system or not and determining whether the mechanical assembly is stably positioned on an operation plane or not; the time logic element, the first counter, the second counter, the first crystal oscillator, the second crystal oscillator and the register module are electrically connected with the control processing chip and are used for recording and calculating the signal action trigger time of each component and recording the signal receiving times and frequency of the laser measurement and control unit; the control processing chip judges whether the mechanical assembly is in a stable state according to the received balance state parameter of the mechanical assembly and the jitter state parameter of the mechanical assembly, and judges whether the laser signal is irradiated on the same logic straight line track according to the received information for emitting the laser signal and the positioning information;
one end of the laser measurement unit is electrically connected with one end of the plane laser measurement and control unit; the other end of the laser measuring unit is electrically connected with the functional module interface; the other end of the plane laser measurement and control unit is electrically connected with the power supply; one end of the communication module is electrically connected with one end of the serial port module, and the other end of the communication module is electrically connected with the functional module interface; the other end of the serial port module is electrically connected with the power supply;
furthermore, the laser measurement unit comprises a first laser measurement and control element, a second laser measurement and control element, a third laser measurement and control element, a fourth laser measurement and control element, a fifth laser measurement and control element, a sixth laser measurement and control element, a seventh laser measurement and control element, an eighth laser measurement and control element and a ninth laser measurement and control element; the first laser measurement and control element, the second laser measurement and control element and the third laser measurement and control element are connected in parallel and are respectively electrically connected with the control processing chip; the first laser measurement and control element is also electrically connected with the functional module interface; the fourth laser measurement and control element, the fifth laser measurement and control element and the sixth laser measurement and control element are connected in parallel in pairs and are respectively electrically connected with the control processing chip; the seventh laser measurement and control element, the eighth laser measurement and control element and the ninth laser measurement and control element are connected in parallel in pairs and are respectively electrically connected with the control processing chip; the first to sixth laser measurement and control elements send six groups of laser signals, and the control processing chip judges whether the six groups of laser signals are on a logic straight line; and the seventh to ninth laser measurement and control elements position the mechanical assembly in a three-dimensional space coordinate and send positioning information to the control processing chip.
Further, the planar laser measurement and control unit comprises a first laser measurement element, a second laser measurement element and a third laser measurement element; the first laser measuring element is electrically connected with the ninth laser measuring and controlling element, and the third laser measuring element is electrically connected with the power supply; the first laser measuring element, the second laser measuring element and the third laser measuring element are connected in parallel in pairs and are respectively electrically connected with the control processing chip to judge whether the shaft center point of the mechanical assembly is in a three-dimensional coordinate system.
Further, the invention also provides a correction method based on the precision corrector of the spiral laser mechanical assembly, which comprises the following steps:
step S1: the first gravity sensing element and the second gravity sensing element both detect the balance state of the mechanical assembly and send the detected balance state information to the control processing chip; the vibration sensing element detects the shaking state of the mechanical assembly and sends detection information to the control processing chip;
step S2, the control processing chip judges the balance state information and the jitter state information, if the judgment result is that the whole system is in the equipment running state of a rated power, the phenomena of measurement value deviation and numerical value increase and decrease amplitude sliding do not occur in unit measurement time, the mechanical assembly is in a stable state, and step S3 is executed; otherwise, return to step S1;
step S3: the seventh to ninth laser measurement and control elements position the mechanical assembly in a three-dimensional space coordinate and send positioning information to the control processing chip; the first to sixth laser measurement and control elements send six groups of laser signals, the control processing chip judges whether the six groups of laser signals are on one logic straight line or not, and the spatial arrangement offset of each laser signal point on the logic straight line is obtained according to the triggering time and the signal loss condition of the laser signals corresponding to the signals on the double ring surfaces of the signal transmitting end and the signal receiving end; accurately controlling a power supply system of the equipment by using the signal measurement value of each point position so as to realize fine adjustment of the running state of the equipment; if the six groups of laser signals are stabilized on a logic straight line, the mechanical assembly completes calibration; otherwise, the procedure returns to step S1 to continue the calibration.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention effectively improves the utilization rate of laser measurement and control, can complete the integral laser measurement of irregular mechanical components, can realize frequency excitation under high-speed and high-pressure operation, and improves the integral precision.
(2) The invention can realize the function action precision control of the whole machine part through the communication set, reduce the fuzzy error, improve the data reliability, realize the output power correction of the equipment by additionally arranging the acceleration sensing device and matching with the microcomputer for calculation, has wide application range, and can improve the precision control of machinery such as a rear bin gate closing machine part of a conveyor.
Drawings
Fig. 1 is a block diagram of the structure of the embodiment of the present invention.
Detailed Description
The invention is further explained below with reference to the drawings and the embodiments.
As shown in fig. 1, the present embodiment provides a precision corrector for a spiral laser mechanical assembly, which includes a control processing chip, a laser measuring unit, a communication module, a serial port module, a functional module interface, a time logic element, a first counter, a second counter, a first crystal oscillator, a second crystal oscillator, a register module, a power supply, a first gravity sensing element, a second gravity sensing element, a vibration sensing element, and a planar laser measurement and control unit;
the laser measuring unit is electrically connected with the control processing chip and used for emitting laser signals on a logic linear track, positioning the mechanical assembly in a three-dimensional space coordinate and sending information of the emitted laser signals and positioning information to the control processing chip; the first gravity sensing element, the second gravity sensing element and the vibration sensing element are electrically connected with the control processing chip and are used for respectively transmitting the measured balance state parameters of the mechanical assembly and the jitter state parameters of the mechanical assembly to the control processing chip; the plane laser measurement and control unit is electrically connected with the control processing chip and used for judging whether the shaft center point of the mechanical component is in a three-dimensional coordinate system or not, determining whether the mechanical component is stably positioned on a working plane or not and confirming the plane stability of the equipment base; the time logic element, the first counter, the second counter, the first crystal oscillator, the second crystal oscillator and the register module are electrically connected with the control processing chip and are used for recording and calculating the signal action trigger time of each component and recording the signal receiving times and frequency of the laser measurement and control unit; the control processing chip judges whether the mechanical assembly is in a stable state according to the received balance state parameter of the mechanical assembly and the jitter state parameter of the mechanical assembly, and judges whether the laser signal is irradiated on the same logic straight line track according to the received information for emitting the laser signal and the positioning information;
one end of the laser measurement unit is electrically connected with one end of the plane laser measurement and control unit; the other end of the laser measuring unit is electrically connected with the functional module interface; the other end of the plane laser measurement and control unit is electrically connected with the power supply; one end of the communication module is electrically connected with one end of the serial port module, and the other end of the communication module is electrically connected with the functional module interface; the other end of the serial port module is electrically connected with the power supply;
in this embodiment, the laser measurement unit includes a first laser measurement and control element, a second laser measurement and control element, a third laser measurement and control element, a fourth laser measurement and control element, a fifth laser measurement and control element, a sixth laser measurement and control element, a seventh laser measurement and control element, an eighth laser measurement and control element, and a ninth laser measurement and control element; the first laser measurement and control element, the second laser measurement and control element and the third laser measurement and control element are connected in parallel and are respectively electrically connected with the control processing chip; the first laser measurement and control element is also electrically connected with the functional module interface; the fourth laser measurement and control element, the fifth laser measurement and control element and the sixth laser measurement and control element are connected in parallel in pairs and are respectively electrically connected with the control processing chip; the seventh laser measurement and control element, the eighth laser measurement and control element and the ninth laser measurement and control element are connected in parallel in pairs and are respectively electrically connected with the control processing chip; the first to sixth laser measurement and control elements send six groups of laser signals, and the control processing chip judges whether the six groups of laser signals are on a logic straight line; and the seventh to ninth laser measurement and control elements position the mechanical assembly in a three-dimensional space coordinate and send positioning information to the control processing chip.
In this embodiment, the planar laser measurement and control unit includes a first laser measurement element, a second laser measurement element, and a third laser measurement element; the first laser measuring element is electrically connected with the ninth laser measuring and controlling element, and the third laser measuring element is electrically connected with the power supply; the first laser measuring element, the second laser measuring element and the third laser measuring element are connected in parallel in pairs and are respectively electrically connected with the control processing chip to judge whether the shaft center point of the mechanical assembly is in a three-dimensional coordinate system.
Preferably, the embodiment further provides a calibration method based on the precision corrector of the spiral laser mechanical assembly, which includes the following steps:
step S1: the first gravity sensing element and the second gravity sensing element both detect the balance state of the mechanical assembly and send the detected balance state information to the control processing chip; the vibration sensing element detects the shaking state of the mechanical assembly and sends detection information to the control processing chip;
step S2, the control processing chip judges the balance state information and the jitter state information, if the judgment result is that the whole system is in the equipment running state of a rated power, the phenomena of measurement value deviation and numerical value increase and decrease amplitude sliding do not occur in unit measurement time, the mechanical assembly is in a stable state, and step S3 is executed; otherwise, return to step S1;
step S3: the seventh to ninth laser measurement and control elements position the mechanical assembly in a three-dimensional space coordinate and send positioning information to the control processing chip; the first to sixth laser measurement and control elements send six groups of laser signals, the control processing chip judges whether the six groups of laser signals are on one logic straight line or not, and the spatial arrangement offset of each laser signal point on the logic straight line is obtained according to the triggering time and the signal loss condition of the laser signals corresponding to the signals on the double ring surfaces of the signal transmitting end and the signal receiving end; accurately controlling a power supply system of the equipment by using the signal measurement value of each point position so as to realize fine adjustment of the running state of the equipment; if the six groups of laser signals are stabilized on a logic straight line, the mechanical assembly completes calibration; otherwise, the procedure returns to step S1 to continue the calibration.
In particular, in this embodiment, the laser measurement and control element is installed on the rotating shaft of the mechanical assembly by solidifying the shaft precision amplifying fan-shaped or annular mechanical assembly, and the corresponding measurement and control surface is installed on the mechanical fixing surface or the fixed measurement point, so as to realize signal measurement and control. When the mechanical component shaft rotates clockwise or anticlockwise, the shaft rotation speed is calculated, the frequency excitation of the laser measurement and control elements distributed spirally is controlled, six groups of laser signals are emitted on a straight line track, and the overall precision control is realized. At least one gravity sensing element is arranged on the mechanical measurement and control ring weighting assembly, and the vibration sensor is arranged on the central line of the horizontal main shaft of the mechanical assembly. The delay is set at the initial stage of the operation of the equipment, and after the operation reaches a certain speed, the integral error of the signal is reduced through the control of the vibration signal, and the horizontal precision is improved.
In particular, in this embodiment, calculations are performed as needed to determine the anchoring of the 6-point longitudinal axis laser measurement points, the stable operating speed is measured by the analog frequency, and the laser frequency is used to excite the longitudinal axis measurement points to form a logical straight line.
In the preferred embodiment, changes are made to the measurement method and calculation, multiple sensing measurement data are integrated, and the original single measurement data use mode is changed into the measurement data comprehensive use mode in an internal data processing mode. On the basis of single-point measurement distribution, data accuracy and controllability are improved by pressurizing or energizing for increasing magnetism. The spiral measuring structure avoids the sensitivity problem of elements, expands the application of a microcomputer, can realize quick measurement and calculation, achieves the function of automatically learning and adjusting errors, and realizes high-speed and high-precision control.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (4)
1. The utility model provides a spiral laser machine subassembly precision corrector which characterized in that: the device comprises a control processing chip, a laser measuring unit, a communication module, a serial port module, a functional module interface, a time logic element, a first counter, a second counter, a first crystal oscillator, a second crystal oscillator, a register module, a power supply, a first gravity sensing element, a second gravity sensing element, a vibration sensing element and a planar laser measurement and control unit;
the laser measuring unit is electrically connected with the control processing chip and used for emitting laser signals on a logic linear track, positioning the mechanical assembly in a three-dimensional space coordinate and sending information of the emitted laser signals and positioning information to the control processing chip; the first gravity sensing element, the second gravity sensing element and the vibration sensing element are electrically connected with the control processing chip and are used for respectively transmitting the measured balance state parameters of the mechanical assembly and the jitter state parameters of the mechanical assembly to the control processing chip; the plane laser measurement and control unit is electrically connected with the control processing chip and used for judging whether the shaft center point of the mechanical assembly is in a three-dimensional coordinate system or not and determining whether the mechanical assembly is stably positioned on an operation plane or not; the time logic element, the first counter, the second counter, the first crystal oscillator, the second crystal oscillator and the register module are electrically connected with the control processing chip and are used for recording and calculating the signal action trigger time of each component and recording the signal receiving times and frequency of the laser measurement and control unit; the control processing chip judges whether the mechanical assembly is in a stable state according to the received balance state parameter of the mechanical assembly and the jitter state parameter of the mechanical assembly, and judges whether the laser signal is irradiated on the same logic straight line track according to the received information for emitting the laser signal and the positioning information;
one end of the laser measurement unit is electrically connected with one end of the plane laser measurement and control unit; the other end of the laser measuring unit is electrically connected with the functional module interface; the other end of the plane laser measurement and control unit is electrically connected with the power supply; one end of the communication module is electrically connected with one end of the serial port module, and the other end of the communication module is electrically connected with the functional module interface; the other end of the serial port module is electrically connected with the power supply.
2. The precision corrector of the spiral laser mechanical assembly as claimed in claim 1, wherein: the laser measurement unit comprises a first laser measurement and control element, a second laser measurement and control element, a third laser measurement and control element, a fourth laser measurement and control element, a fifth laser measurement and control element, a sixth laser measurement and control element, a seventh laser measurement and control element, an eighth laser measurement and control element and a ninth laser measurement and control element; the first laser measurement and control element, the second laser measurement and control element and the third laser measurement and control element are connected in parallel and are respectively electrically connected with the control processing chip; the first laser measurement and control element is also electrically connected with the functional module interface; the fourth laser measurement and control element, the fifth laser measurement and control element and the sixth laser measurement and control element are connected in parallel in pairs and are respectively electrically connected with the control processing chip; the seventh laser measurement and control element, the eighth laser measurement and control element and the ninth laser measurement and control element are connected in parallel in pairs and are respectively electrically connected with the control processing chip; the first to sixth laser measurement and control elements send six groups of laser signals, and the control processing chip judges whether the six groups of laser signals are on a logic straight line; and the seventh to ninth laser measurement and control elements position the mechanical assembly in a three-dimensional space coordinate and send positioning information to the control processing chip.
3. The precision corrector of the spiral laser mechanical assembly as claimed in claim 2, wherein: the plane laser measurement and control unit comprises a first laser measurement element, a second laser measurement element and a third laser measurement element; the first laser measuring element is electrically connected with the ninth laser measuring and controlling element, and the third laser measuring element is electrically connected with the power supply; the first laser measuring element, the second laser measuring element and the third laser measuring element are connected in parallel in pairs and are respectively electrically connected with the control processing chip to judge whether the shaft center point of the mechanical assembly is in a three-dimensional coordinate system.
4. A correction method based on the precision corrector of the spiral laser mechanical assembly of claim 3, characterized in that: the method comprises the following steps:
step S1: the first gravity sensing element and the second gravity sensing element both detect the balance state of the mechanical assembly and send the detected balance state information to the control processing chip; the vibration sensing element detects the shaking state of the mechanical assembly and sends detection information to the control processing chip;
step S2, the control processing chip judges the balance state information and the jitter state information, if the judgment result is that the whole system is in the equipment running state of a rated power, the phenomena of measurement value deviation and numerical value increase and decrease amplitude sliding do not occur in unit measurement time, the mechanical assembly is in a stable state, and step S3 is executed; otherwise, return to step S1;
step S3: the seventh to ninth laser measurement and control elements position the mechanical assembly in a three-dimensional space coordinate and send positioning information to the control processing chip; the first to sixth laser measurement and control elements send six groups of laser signals, the control processing chip judges whether the six groups of laser signals are on one logic straight line or not, and the spatial arrangement offset of each laser signal point on the logic straight line is obtained according to the triggering time and the signal loss condition of the laser signals corresponding to the signals on the double ring surfaces of the signal transmitting end and the signal receiving end; accurately controlling a power supply system of the equipment by using the signal measurement value of each point position so as to realize fine adjustment of the running state of the equipment; if the six groups of laser signals are stabilized on a logic straight line, the mechanical assembly completes calibration; otherwise, the procedure returns to step S1 to continue the calibration.
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| CN201811599026.7A CN109458931B (en) | 2018-12-26 | 2018-12-26 | Precision corrector of spiral laser mechanical assembly and correction method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2596321Y (en) * | 2002-12-24 | 2003-12-31 | 中国航空工业总公司第三○四研究所 | Large size calibrating device with straightness analysis |
| CN102798377A (en) * | 2012-08-07 | 2012-11-28 | 张东光 | Planar error measurement analysis system and method |
| CN105547468A (en) * | 2016-01-29 | 2016-05-04 | 福建省计量科学研究院 | Device and method for rapid calibration of sensitivity of pyranometer |
| CN205373631U (en) * | 2015-12-04 | 2016-07-06 | 吴江市汇巨机械有限公司 | Elevator guide rail installation laser correcting unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003285098A1 (en) * | 2002-10-29 | 2004-05-25 | Metron Systems, Inc. | Calibration for 3d measurement system |
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- 2018-12-26 CN CN201811599026.7A patent/CN109458931B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2596321Y (en) * | 2002-12-24 | 2003-12-31 | 中国航空工业总公司第三○四研究所 | Large size calibrating device with straightness analysis |
| CN102798377A (en) * | 2012-08-07 | 2012-11-28 | 张东光 | Planar error measurement analysis system and method |
| CN205373631U (en) * | 2015-12-04 | 2016-07-06 | 吴江市汇巨机械有限公司 | Elevator guide rail installation laser correcting unit |
| CN105547468A (en) * | 2016-01-29 | 2016-05-04 | 福建省计量科学研究院 | Device and method for rapid calibration of sensitivity of pyranometer |
Non-Patent Citations (1)
| Title |
|---|
| 现代汽车制造厂总装车间工艺设计;王仲钦;《机械制造》;20031231;第41卷(第464期);第40-41页 * |
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