CN111536875B - Rapid detection system and detection method for form and position tolerance at edge of airplane floor beam - Google Patents
Rapid detection system and detection method for form and position tolerance at edge of airplane floor beam Download PDFInfo
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- CN111536875B CN111536875B CN202010440690.8A CN202010440690A CN111536875B CN 111536875 B CN111536875 B CN 111536875B CN 202010440690 A CN202010440690 A CN 202010440690A CN 111536875 B CN111536875 B CN 111536875B
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- 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
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Abstract
The application provides a rapid detection system and a rapid detection method for form and position tolerance at the edge of an airplane floor beam. Arranging a measuring device containing a plurality of groups of high-precision laser displacement sensors which work in a cooperative manner at the position of the cross section of the part, and rapidly moving the measuring device by using a precision guide rail along the length direction of the part, wherein the measuring device continuously collects real-time data in the moving process; and the measuring device can move back and forth along the transverse direction while moving along the length direction. The planar motion can ensure that the measuring device can complete the measurement of all the measuring elements in one round-trip period.
Description
Technical Field
The invention relates to the field of three-dimensional digital measurement, in particular to a form and position tolerance rapid detection system and a detection method.
Background
Floor beams are a class of parts that are long (up to 20m) in size and thin (up to 3mm) at their edges. Because the floor is formed by welding floor beams one by one, the dimensional accuracy of the edge part directly determines the quality of the whole floor after welding. Therefore, the requirements on the flatness, the thickness and the side straightness of the edge of the welding position are high in part detection.
The existing detection means is to use a measuring tool to carry out pure manual detection: (1) the straightness is detected whether the parts are parallel and level or not by using a feeler gauge after the parts are tightly leaned against the side faces of the edges by using a standard plane; (2) the flatness is evaluated by detecting the flatness of a plurality of sections in a standing mode, and the flatness of each standing position is also detected in a standard plane clearance gauge adding mode; (3) the thickness is also detected in a standing mode by adopting a micrometer (micrometer screw) at each standing position.
The existing detection means has the problems of low detection efficiency and poor reliability of detection results. The inefficiency is manifested in that for such very long parts, the number of set stations is so great that the inspection of a single part takes several hours. The low reliability of the result is shown in that the measurement result is influenced by human factors, so that the result fluctuation is large; the way of evaluating the whole with results of a limited number of cross sections is not itself accurate.
Therefore, the technical problems to be solved in the prior art mainly include the following three points:
(1) when different stations are selected on the part for measurement, sample collection is possibly insufficient, and measurement data are insufficient to reflect the overall processing quality of the part, so that the measurement result is inaccurate;
(2) when the parts are manually measured, human errors are easily introduced, and the accuracy and the reliability of a measuring result are influenced;
(3) when the form and position tolerance of the part is judged, a large amount of measurement data needs to be manually recorded, calculated and analyzed, errors are easy to occur, and the efficiency is low.
Disclosure of Invention
In order to solve the problems, the invention provides a system and a method for rapidly detecting form and position tolerance at the edge of an airplane floor beam, wherein a measuring device containing a plurality of groups of high-precision laser displacement sensors working cooperatively is arranged at the position of the cross section of a part, the measuring device is rapidly moved by utilizing a precision guide rail along the length direction of the part, and the measuring device continuously collects real-time data in the moving process; and the measuring device can move back and forth along the transverse direction while moving along the length direction. The planar motion can ensure that the measuring device can complete the measurement of all the measuring elements in one round-trip period.
A rapid detection system for form and position tolerance at the edge of an airplane floor beam comprises a double-guide-rail sliding table device, a manual adjusting lifting device, a leveling device, a ball screw mechanism and a measuring device, wherein the double-guide-rail sliding table device comprises a motor power supply, a smooth guide rail, a rack, a gear, a sliding rail base, a motor controller, a sliding table and a stepping motor; the manual adjustment lifting device comprises an upper table top, a knob, a sliding block, a lower table top and an X-shaped connecting rod mechanism, wherein the sliding block is arranged in a sliding groove of the upper table top and the lower table top; the leveling device comprises a tightening nut, an adjusting nut, a threaded strut, a connecting seat and a fixing bolt, wherein the threaded strut is fixed on the connecting seat through the fixing bolt; the measuring device comprises a supporting frame, a positioning pin and a laser displacement sensor, wherein the supporting frame is provided with a positioning hole, the laser displacement sensor is fixed inside the supporting frame through the positioning pin, the supporting frame is fixed on a ball screw mechanism, the ball screw mechanism is arranged between an adjusting nut and a tightening nut, and the ball screw mechanism drives the measuring device to move along the Y direction of the detection system; the ball screw mechanism comprises a ball screw sliding block, a ball screw motor, a base, a screw guide rail and a ball screw, the ball screw motor and the screw guide rail are fixed on the base, the ball screw is connected with the ball screw motor, the ball screw sliding block is installed on the screw guide rail and matched with the ball screw, and the base is installed between the adjusting nut and the tightening nut.
A method for rapidly detecting form and position tolerance at the edge of an aircraft floor beam comprises the following steps:
step 2, rotating 4 adjusting nuts to enable laser lines of 2 vertically placed laser displacement sensors to be in a vertical state and enable laser lines of 1 transversely placed laser displacement sensor to be in a horizontal state;
step 3, rotating the knob to enable the laser focuses of the 3 laser displacement sensors to be located at the center of the side face of the edge of the part in the vertical direction;
step 4, starting the 3 laser displacement sensors, enabling the sliding table to continuously move to the farthest end from the zero position, completing the outward movement stage, and enabling the 3 laser displacement sensors to always acquire data;
step 5, closing the laser displacement sensor which is transversely arranged, and enabling the sliding table to intermittently move to a zero point position from the farthest end to finish a return stroke stage;
step 6, in the return stroke stage, the sliding table stops moving every time the sliding table moves for a certain distance, at the moment, the ball screw sliding block is set to reciprocate for a specific distance according to a program, 2 laser displacement sensors which are vertically placed collect data, and after the ball screw sliding block completes one reciprocating movement, the sliding table resumes moving;
and 7, importing all data into software for analysis, and obtaining measurement data.
The invention has the following beneficial effects:
(1) the sensor acquisition frequency is high, and the slider is fast with the moving speed of slip table, therefore can gather a large amount of data fast high-efficiently, and the data volume is big more then the measuring result is more close to actual conditions.
(2) The sensor has high measurement precision, the whole system automatically runs in the whole process, and no error is introduced by manual operation, so that the reliability and repeatability of the measurement result are high.
(3) A large amount of data collected by the sensor can be automatically processed, analyzed and judged through software, a measurement report is automatically generated, manual data processing is avoided, and the working quality and efficiency are obviously improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the detecting device
FIG. 2 is a schematic view of a dual-track sliding table device
FIG. 3 is a schematic view of a manual lifting device
FIG. 4 is a schematic view of a leveling device
FIG. 5 is a schematic view of a ball screw mechanism
FIG. 6 is a schematic view of the structure of the measuring device
The numbering in the figures illustrates: 1. a dual rail slide table arrangement; 2. a manually adjustable lifting device; 3. a leveling device; 4. a ball screw mechanism; 5. a measuring device; 11. a motor power supply; 12. a smooth guide rail; 13. a rack; 14. a gear; 15. a slide rail base; 16. a motor controller; 17. a sliding table; 18. a stepping motor; 21. an upper table top; 22. a knob; 23. a slider; 24. a lower table top; an X-shaped linkage; 31. screwing down the nut; 32. adjusting the nut; 33. a threaded post; 34. a connecting seat; 35. fixing the bolt; 41. a ball screw slider; 42. a ball screw motor; 43. a base; 44. a lead screw guide rail; 45. a ball screw; 51. a support frame; 52. positioning pins; 53. a laser displacement sensor;
Detailed Description
As shown in fig. 1-6, a system for rapidly detecting form and location tolerance at an edge of an aircraft floor beam comprises a dual-guide-rail sliding table device 1, a manual lifting device 2, a leveling device 3, a ball screw mechanism 4 and a measuring device 5, wherein the dual-guide-rail sliding table device 1 comprises a motor power supply 11, a smooth guide rail 12, a rack 13, a gear 14, a sliding rail base 15, a motor controller 16, a sliding table 17 and a stepping motor 18, the sliding rail base 15 is fixed on a horizontal ground, the smooth guide rail 12 and the rack 13 are fixed on the sliding rail base 15 in parallel, the sliding table 17 is installed on the smooth guide rail 12 and can move along the smooth guide rail 12 in the X direction of the detection system, the stepping motor 18, the motor power supply 11 and the motor controller 16 are fixed on the sliding table 17, and the gear 14 is connected with the stepping motor 18 and matched with the rack 13; the manual lifting device 2 comprises an upper table top 21, a knob 22, a sliding block 23, a lower table top 24 and an X-shaped link mechanism 25, wherein the sliding block 23 is arranged in a sliding groove between the upper table top 21 and the lower table top 24, the X-shaped link mechanism 25 is connected with the sliding block 23 and a fixed shaft of the upper table top 21 and the lower table top 24, the knob 22 is arranged outside the upper table top 21 and connected with the sliding block 23 of the upper table top 21, the lower table top 24 is fixed on the sliding table 17, the knob 22 is rotated, the X-shaped link mechanism 25 drives the upper table top 21 to move along the Z direction of the detection system, the upper table top 21 is in a cavity-shaped structure, and a lead screw structure connected with the sliding block 23 is arranged in the upper table top to drive the sliding block 23 to move along the sliding groove; the leveling device 3 comprises a tightening nut 31, an adjusting nut 32, a threaded strut 33, a connecting seat 34 and a fixing bolt 35, the threaded strut 33 is fixed on the connecting seat 34 through the fixing bolt 35, the adjusting nut 32 and the tightening nut 31 are installed on the threaded strut 33 through threads, and the connecting seat 34 is fixed on the upper table surface 21 through threaded connection; the measuring device 5 comprises a supporting frame 51, a positioning pin 52 and a laser displacement sensor 53, wherein the supporting frame 51 is provided with a positioning hole, the laser displacement sensor 53 is fixed inside the supporting frame 51 through the positioning pin 52, the supporting frame 51 is fixed on the ball screw mechanism 4, the ball screw mechanism 4 is arranged between the adjusting nut 32 and the tightening nut 31, and the ball screw mechanism 4 drives the measuring device 5 to move along the Y direction of the detection system; the ball screw mechanism 4 includes a ball screw slider 41, a ball screw motor 42, a base 43, a screw guide 44, and a ball screw 45, the ball screw motor 42 and the screw guide 44 are fixed on the base 43, the ball screw 45 is connected to the ball screw motor 42, the ball screw slider 41 is mounted on the screw guide 44 and is engaged with the ball screw 45, and the base 43 is mounted between the adjusting nut 32 and the tightening nut 31.
A method for rapidly detecting form and position tolerance at the edge of an aircraft floor beam comprises the following steps:
step 2, rotating 4 adjusting nuts 32 to enable the laser lines of 2 vertically placed laser displacement sensors 53 to be in a vertical state, and enabling the laser lines of 1 transversely placed laser displacement sensor 53 to be in a horizontal state;
step 3, rotating the knob 22 to enable the laser focuses of the 3 laser displacement sensors 53 to be located at the vertical center position of the side face of the edge of the part;
step 4, starting the 3 laser displacement sensors 53, enabling the sliding table 17 to continuously move from the zero position to the farthest end, completing the outward movement stage, and enabling the 3 laser displacement sensors 53 to always acquire data;
step 5, closing the laser displacement sensor 53 which is transversely arranged, and enabling the sliding table 17 to intermittently move to a zero point position from the farthest end to finish a return stroke stage;
step 6, in the return stroke stage, the sliding table 17 stops moving every time the sliding table moves for a certain distance, at the moment, the ball screw sliding block 41 is set to reciprocate for a specific distance according to a program, 2 laser displacement sensors 53 which are vertically placed collect data, and after the ball screw sliding block 41 completes one reciprocating movement, the sliding table 17 resumes moving;
and 7, importing all data into software for analysis, and obtaining measurement data.
Claims (4)
1. A rapid detection system for form and position tolerance at the edge of an airplane floor beam is characterized by comprising a double-guide-rail sliding table device, a manual-adjustment lifting device, a leveling device, a ball screw mechanism and a measuring device, wherein the double-guide-rail sliding table device comprises a motor power supply, a smooth guide rail, a rack, a gear, a sliding rail base, a motor controller, a sliding table and a stepping motor; the manual lifting device comprises an upper table top, a knob, a sliding block, a lower table top and an X-shaped connecting rod mechanism, wherein the sliding block is arranged in a sliding chute between the upper table top and the lower table top; the leveling device comprises a tightening nut, an adjusting nut, a threaded strut, a connecting seat and a fixing bolt, wherein the threaded strut is fixed on the connecting seat through the fixing bolt; measuring device includes the carriage, the locating pin, 3 laser displacement sensor, be equipped with the locating hole on the carriage, laser displacement sensor passes through the locating pin to be fixed inside the carriage, it makes 2 laser displacement sensor's that stand to place laser line be in vertical state to rotate 4 adjusting nut, make 1 laser displacement sensor's that transversely places laser line be in the horizontality, it makes 3 laser displacement sensor's laser focus be located the vertical direction central point of part edge side to rotate the knob, the carriage is fixed on ball screw mechanism, ball screw mechanism installs between adjusting nut and screw up the nut, ball screw mechanism drives measuring device and follows detecting system's Y to the motion.
2. The system of claim 1, wherein the ball screw mechanism comprises a ball screw slider, a ball screw motor, a base, a screw guide rail, and a ball screw, the ball screw motor and the screw guide rail are fixed on the base, the ball screw is connected to the ball screw motor, the ball screw slider is mounted on the screw guide rail and engaged with the ball screw, and the base is mounted between the adjusting nut and the tightening nut.
3. The system for rapidly detecting the geometric tolerance of the edge of the aircraft floor beam according to claim 1, wherein the upper table top is a cavity-shaped structure, and a screw rod structure connected with the sliding block is arranged in the upper table top and drives the sliding block to move along the sliding groove.
4. The method for detecting the geometric tolerance quick detection system at the edge of the aircraft floor beam as claimed in claim 1, is characterized by comprising the following steps:
step 1, returning the sliding table and the ball screw sliding block to a zero position;
step 2, rotating 4 adjusting nuts to enable laser lines of 2 vertically placed laser displacement sensors to be in a vertical state and enable laser lines of 1 transversely placed laser displacement sensor to be in a horizontal state;
step 3, rotating the knob to enable the laser focuses of the 3 laser displacement sensors to be located at the center of the side face of the edge of the part in the vertical direction;
step 4, starting the 3 laser displacement sensors, enabling the sliding table to continuously move to the farthest end from the zero position, completing the outward movement stage, and enabling the 3 laser displacement sensors to always acquire data;
step 5, closing the laser displacement sensor which is transversely arranged, and enabling the sliding table to intermittently move to a zero point position from the farthest end to finish a return stroke stage;
step 6, in the return stroke stage, the sliding table stops moving every time the sliding table moves for a certain distance, at the moment, the ball screw sliding block is set to reciprocate for a specific distance according to a program, 2 laser displacement sensors which are vertically placed collect data, and after the ball screw sliding block completes one reciprocating movement, the sliding table resumes moving;
and 7, importing all data into software for analysis, and obtaining measurement data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010440690.8A CN111536875B (en) | 2020-05-22 | 2020-05-22 | Rapid detection system and detection method for form and position tolerance at edge of airplane floor beam |
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| CN202010440690.8A CN111536875B (en) | 2020-05-22 | 2020-05-22 | Rapid detection system and detection method for form and position tolerance at edge of airplane floor beam |
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| CN111536875B true CN111536875B (en) | 2021-09-14 |
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| CN112504120A (en) * | 2020-12-04 | 2021-03-16 | 潍坊学院 | Screw rod measuring machine |
| CN112781523A (en) * | 2021-01-04 | 2021-05-11 | 江苏徐工工程机械研究院有限公司 | Portable surface defect detection device and method based on laser displacement ranging |
| CN114670245B (en) * | 2022-04-11 | 2023-06-06 | 北京航空航天大学 | Precision adjusting device and method for ball screw assembly |
| CN115139190B (en) * | 2022-07-12 | 2024-04-12 | 中国科学院上海光学精密机械研究所 | Detection device for polishing die surface type |
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| JP4336781B2 (en) * | 2006-12-07 | 2009-09-30 | 大学共同利用機関法人 高エネルギー加速器研究機構 | Flatness measuring device |
| CN203837663U (en) * | 2014-05-30 | 2014-09-17 | 温州大学 | Apparatus for testing dynamic displacement characteristic of electromagnet |
| CN205843615U (en) * | 2016-06-27 | 2016-12-28 | 北京奥普科星技术有限公司 | A kind of vacuum interrupter form and position tolerance automatic detection device |
| CN112286233B (en) * | 2017-02-17 | 2021-09-14 | 南通大学 | Working method of double-measuring-head automatic alignment system based on laser displacement sensor |
| CN207963779U (en) * | 2018-02-12 | 2018-10-12 | 苏州市计量测试研究所 | A kind of laser displacement sensor calibrating installation |
| CN109253693B (en) * | 2018-11-07 | 2019-10-29 | 燕山大学 | Elongate structure detection device |
| CN109352422A (en) * | 2018-11-22 | 2019-02-19 | 北京理工大学 | A kind of multi-functional on-position measure method and device of dual-headed laser scanning |
| CN110044299A (en) * | 2019-05-29 | 2019-07-23 | 吉林大学 | A kind of cylindrical parts excircle size and Form and position error non-contact intelligent detection instrument |
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