CN102628672B - Optical detection method of sticking-mounting transmission system of automatic chip mounter - Google Patents
Optical detection method of sticking-mounting transmission system of automatic chip mounter Download PDFInfo
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- CN102628672B CN102628672B CN201210084986.6A CN201210084986A CN102628672B CN 102628672 B CN102628672 B CN 102628672B CN 201210084986 A CN201210084986 A CN 201210084986A CN 102628672 B CN102628672 B CN 102628672B
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Abstract
The invention discloses an optical detection method and the application of a sticking-mounting transmission system of an automatic chip mounter, which utilize a reference point of a working platform as a detection object. Reference point original position coordinate information is collected through front-stage photographs, sticking-mounting head operation mode and sticking-mounting times are set combined with a main control system, then position coordinate collection of the reference point is conducted on the reference point in the moving state through a plurality of times of simulation sticking-mounting processes in the back stage to obtain displacement change law of relative sticking-mounting times of reciprocating movement of the sticking-mounting head and achieve effective detection of the sticking-mounting transmission system of an automatic chip mounter. The detection results can conduct displacement compensation on a continuous sticking-mounting process of the sticking-mounting head in the back stage and can conduct equipment alignment in the front stage aging process, so that accumulation errors generated in the continuous sticking-mounting process are effectively removed, sticking-mounting quality and sticking-mounting efficiency of the automatic chip mounter can be ensured, and using requirements in the actual sticking-mounting process can be met.
Description
Technical field
The present invention relates to a kind of optical detecting method for automatic placement machine attachment kinematic train, belong to Full Vision technical field.
Background technology
In Full Vision technical field, automatic placement machine is a key equipment, it adopts the mounting head to-and-fro movement under chip controls, in conjunction with image acquisition at any time, the location of optical lens, complete the pickup of various electronic devices and components, and correct rear final accurately attachment on the assigned address of circuit board in pickup.Attachment process accurately, fast, placement speed can reach several ten thousand times per hour, even hundreds of thousands, attachment is carried out completely automatically, substantially increase the attachment process of electronic devices and components, ensure that mounting quality and attachment efficiency, automatic placement machine uses very general in Full Vision technical field, and obtains everybody extensive accreditation.But existing automatic placement machine has in use also manifested deficiency, although it is provided with the check and correction process in pickup, to ensure each pickup accurately, be convenient to accurate attachment, but by the impact of the reciprocal high-speed motion of attachment, in use often can there is cumulative errors along with the increase of attachment number of times in chip mounter.Cumulative errors mainly produces in each motion links such as lead screw transmission, guide rail movement or attachment transmissions, especially when mounting continuously, mounting head does not carry out return, oneself's check and correction again can not be completed, driving error can remain and be accumulated in each attachment process, and along with the accumulation of error, the impact of cumulative errors manifests gradually, mounting quality declines, and attachment efficiency reduces.
Automatic placement machine is improved, overcomes the adverse effect that transmission accuracy and cumulative errors are brought, just become fundamental purpose of the present invention.Simply carry out performance from drive mechanism to improve and do not gear to actual circumstances, can not the continuation generation of effective departure.And consider to carry out tracing detection to transmission accuracy and cumulative errors, analytical error Producing reason and rule, utilize automatic control system to compensate transmission process, the object reaching correction transmission accuracy just becomes a reality and improves a kind of effective means of chip mounter kinematic accuracy.
Summary of the invention
In view of above-mentioned existing situation, the present invention aims to provide a kind of optical detecting method for automatic placement machine attachment kinematic train, thus obtain basic condition and the rule of the generation of mounting head real work medial error, utilize testing result to carry out motion compensation to continuous attachment process, ensure mounting quality and attachment effect.
The present invention is achieved through the following technical solutions:
The optical detecting method of automatic placement machine attachment kinematic train, concrete steps comprise: the reference point of two or more optional positions selected on the table, utilizes the optical lens on mounting head to carry out reference point image acquisition, determine reference point location coordinate; By master control system setting mounting head operational mode and attachment number information, start the image acquisition that mounting head moves back and forth in process to reference point, the corresponding relation list of image position coordinates and number of times is gathered under drawing different operational mode, analysis chart image position changes in coordinates situation, statistic analysis result, show that mounting head to-and-fro movement mounts the change in displacement rule of number of times relatively.
Described reference point is near four edges of worktable, and four reference points are square profile.
Described mounting head operational mode comprises the reciprocal simulation attachment motion process at least two reference points on X-axis, Y-axis and/or XY between centers unspecified angle.
Described corresponding relation list comprises the movement position changes in coordinates situation of at least two reference points on the X-axis of relatively attachment number of times, Y-axis and/or XY between centers unspecified angle.
The optical detecting method of automatic placement machine attachment kinematic train of the present invention, with the reference point on worktable for detected object, taken pictures by earlier position and gather reference point original position coordinate information, later stage is by master control system setting mounting head operational mode and attachment number of times, repeatedly simulating the position coordinates collection constantly reference point being carried out to motion state in attachment process, thus draw reference point location coordinate and the contrast list mounting number of times, after comprehensive analysis, show that mounting head to-and-fro movement mounts the change in displacement rule of number of times relatively, realize the mensuration of automatic placement machine attachment kinematic train.Its process takes full advantage of the structure on existing automatic placement machine, by oppositely achieving the mensuration to attachment kinematic train kinematic accuracy to the measurement of reference point location coordinate, and then provide data foundation for whether the depth of parallelism of determining drive rail or turn-screw or levelness meet design requirement.Testing process is to simulate actual attachment process for foundation, and testing environment is true, effectively, Data Detection accurately, reliably.
Embodiment
Center of the present invention is that the position coordinates utilizing the optical lens on existing automatic placement machine to carry out any reference point on worktable measures, by the to-and-fro movements of more than up to ten thousand times and constantly collection, measure, draw reference point displacement change and attachment number of times relation list, thus analyze and show that automatic placement machine mounts the process attachment actual motion precision of kinematic train, repeatable accuracy and degree of stability continuously, the indirect situation having grasped levelness between automatic placement machine upper driving guide rail or leading screw and the depth of parallelism, does data encasement for ensureing to improve and improve continuous placement accuracy.
The optical detecting method of automatic placement machine attachment kinematic train of the present invention, concrete steps comprise:
Step one selectes a reference point respectively near the position of four corner on the table, and four reference points are square profile, utilize the optical lens on mounting head to carry out reference point image acquisition, determine reference point location coordinate.
Four selected datum point distribution positions are even, and distance is relatively far away, can go out mount the motion process of process mounting head under range by effecting reaction, prepare for weighing detection motion result comprehensively.The optical lens on mounting head is utilized to carry out reference point image acquisition, determine reference point location coordinate, and being stored in master control system, location coordinate information uses as the contrast Back ground Information in later stage, is the standard judging automatic placement machine mounts kinematic train to-and-fro movement precision.
In four selected reference points, its distribution situation and selected number also can be determined as required.During as the precision measure of attachment process need be carried out to a certain ad-hoc location, can by two or more datum point distribution in region to be measured, by repeatedly repeatedly detecting for reference point in this region, obtain kinematic accuracy and repeatable accuracy data that desired location mounts process continuously.
Step 2 operation master control system setting mounting head operational mode and attachment number information.
Mounting head operational mode comprises the reciprocal simulation attachment motion process at least two reference points on X-axis, Y-axis and/or XY between centers unspecified angle.Setting mounting head runs along X-direction, and mounting head only detects the position coordinates that at least two reference points be positioned in X-direction carry out simulating attachment process.In the setting of X axis operational mode, mounting head can detect the position coordinates being positioned at two reference points of top or bottom of square profile, gather the situation of change of X axis two reference point location coordinates in simulation attachment process, thus obtain kinematic accuracy and the multiplicity information of X axis on bench-top or bottom position.
Equally, run along Y-axis or XY between centers unspecified angle direction as set mounting head, the reference point location coordinate information then measured can reflect kinematic accuracy or the repeatable accuracy situation of correspondence direction upper driving system, thus reaches the object detecting the continuous kinematic accuracy of attachment kinematic train on difference attachment direction.
The setting of attachment number of times, need with realistic use and determine, its work is as the criterion in order to the cumulative errors reacting mounting head kinematic train.Under normal circumstances, the setting of number of times is mounted with ten thousand times for benchmark.
Step 3 starts mounting head, image acquisition reference point moved back and forth in process, the corresponding relation list of image position coordinates and number of times is gathered under drawing different mode, analysis chart image position changes in coordinates situation, statistic analysis result, show that mounting head to-and-fro movement mounts the change in displacement rule of number of times relatively.
Mounting head is under the control of master control system, in motion process, constantly position coordinates collection is carried out to two reference points of X axis, position coordinates and the list of number of times corresponding relation is drawn according to image data, wherein, x-axis is number of times, and y-axis is the amplitude curve after the reference point location coordinate information comparison of original storage in the location coordinate information and master control system gathered in motion process.Amplitude curve can be found out in each attachment motion process easily, situation when mounting head is walked along X axis.After situation of change is gathered, adding up, just can analyze the change in displacement rule between X axis mounting head to-and-fro movement position and attachment number of times, thus indirectly obtain the X axis depth of parallelism situation of automatic placement machine upper driving guide rail or leading screw, and their repeatable accuracy and degree of stability.Along with the increase of times of exercise, its data will be more accurate, reliable, also more can reflect the precision situation of change of real work.
Certainly, if reference point location coordinate gatherer process also comprises, the simulation attachment process of at least two reference point location coordinates in Y-axis and/or XY between centers unspecified angle is detected, then at the position coordinates drawn and the amplitude curve that the y-axis of number of times corresponding relation list also there will be corresponding Y-axis and/or XY axle, just can observe the situation of change of reference point location coordinate in mounting head motion process like this, for overall understanding with grasp the attachment kinematic accuracy of kinematic train and repeatable accuracy and degree of stability and provide data foundation by three curves simultaneously.
In actual testing process, first position and the number of detection reference is set, for four reference points in square profile at worktable edge, by the optical lens on mounting head, position coordinates collection is carried out to two reference points being positioned at top, and basis is stored in master control system as a comparison.Position coordinates gatherer process due to mounting head is from chip mounter initial point, and the reference point location coordinate information of collection is relative accurate information, therefore the contrast basis that can be used as the later stage uses.Then, choosing mounting head operational mode by master control system is that X axis simulation attachment process detects, setting attachment number of times is 10,000 times, start mounting head, mounting head brings into operation to simulate mounted state, mounting head carries out the collection of motion process under the control of master control system to the position coordinates of two reference points, the data gathered constantly are aggregated in master control system, and the final corresponding relation list forming image position coordinates and attachment number of times, and then obtain the amplitude curve of simulating reference point location coordinate in attachment process, by analytic curve Changing Pattern, just can show that automatic placement machine kinematic train is in the repeatable accuracy of X axis and degree of stability, and the depth of parallelism of X axis between drive rail or leading screw, levelness state, complete X axis testing process.
Above-mentioned detection method is the process that automatic placement machine detects at X axis, its objective is to realize automatic placement machine adjustment, check and correction and anaphase movement compensation in the mode of software control, to meet practical application needs, ensure mounting quality and the attachment efficiency of automatic placement machine.
Claims (3)
1. the optical detecting method of automatic placement machine attachment kinematic train, it is characterized in that, concrete steps comprise: the reference point of two or more optional positions selected on the table, utilizes the optical lens on mounting head to carry out reference point image acquisition, determine reference point location coordinate; By master control system setting mounting head operational mode and attachment number information, start the image acquisition that mounting head moves back and forth in process to reference point, according to the corresponding relation list of the image position coordinates gathered under different operational mode and number of times, draw based on the amplitude curve after the reference point location coordinate information comparison of original storage, analysis chart image position changes in coordinates situation, statistic analysis result, show that mounting head to-and-fro movement mounts the change in displacement rule of number of times relatively; Described mounting head operational mode comprises the reciprocal simulation attachment motion process at least two reference points on X-axis, Y-axis and/or XY between centers unspecified angle.
2. the optical detecting method of automatic placement machine attachment kinematic train according to claim 1, it is characterized in that, described reference point is near four edges of worktable, and four reference points are square profile.
3. the optical detecting method of automatic placement machine attachment kinematic train according to claim 1, it is characterized in that, described corresponding relation list comprises the movement position changes in coordinates situation of at least two reference points on the X-axis of relatively attachment number of times, Y-axis and/or XY between centers unspecified angle.
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| CN105323977B (en) * | 2014-08-01 | 2018-03-16 | 广州翌贝拓自动化科技有限公司 | Mounting coordinates acquisition methods based on machine vision |
| CN105704944A (en) * | 2015-12-01 | 2016-06-22 | 淮安自然兴电子有限公司 | Circuit board transplantation double-sided automatic alignment device |
| CN107133724A (en) * | 2017-04-18 | 2017-09-05 | 冀月斌 | A kind of chip mounter imports bearing calibration and the system of creation data |
| CN109835519A (en) * | 2017-11-29 | 2019-06-04 | 蓝思智能机器人(长沙)有限公司 | A kind of method, apparatus and computer readable storage medium controlling actuator pad pasting |
| CN109849323A (en) * | 2019-03-25 | 2019-06-07 | 深圳市八零联合装备有限公司 | Chip mounter |
| CN117393655B (en) * | 2023-12-08 | 2024-02-20 | 苏州易缆微光电技术有限公司 | High-precision mounting method and system for silicon optical chip and active device |
| CN118167946B (en) * | 2024-05-16 | 2024-07-05 | 深圳邦德光电科技有限公司 | Control method and system of LED lamp strip production equipment |
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| CN1206161A (en) * | 1997-07-15 | 1999-01-27 | 三星电子株式会社 | Method and apparatus for correcting alignment error of scanning head of shuttle type scanner |
| CN2577250Y (en) * | 2002-11-11 | 2003-10-01 | 曾秉斌 | Automatic measuring device for engineering capacity performance of high-speeding sheet make-up machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100222988B1 (en) * | 1997-07-15 | 1999-10-01 | 윤종용 | Method and apparatus for alignment correction of scanning head in shuttle type scanner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1206161A (en) * | 1997-07-15 | 1999-01-27 | 三星电子株式会社 | Method and apparatus for correcting alignment error of scanning head of shuttle type scanner |
| CN2577250Y (en) * | 2002-11-11 | 2003-10-01 | 曾秉斌 | Automatic measuring device for engineering capacity performance of high-speeding sheet make-up machine |
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Address after: 100016, No. 6, Jiuxianqiao Road, building 1, building 10, Chaoyang District, Beijing, China. 6D Patentee after: BEIJING ZHONGKE TORCH TECHNOLOGY CO., LTD. Address before: 100031 Beijing city Chaoyang District road nine Xianqiao No. 10 seat 6D A International Star City Patentee before: Beijing Zhongke Torch Technology Co., Ltd. |