CN110057338A - A kind of adaptive setting method of Workpiece zero point based on duplex measurement - Google Patents
A kind of adaptive setting method of Workpiece zero point based on duplex measurement Download PDFInfo
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- CN110057338A CN110057338A CN201910437106.0A CN201910437106A CN110057338A CN 110057338 A CN110057338 A CN 110057338A CN 201910437106 A CN201910437106 A CN 201910437106A CN 110057338 A CN110057338 A CN 110057338A
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
- G01B21/042—Calibration or calibration artifacts
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/20—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring contours or curvatures, e.g. determining profile
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Numerical Control (AREA)
Abstract
The invention belongs to part machining center technical fields, a kind of adaptive setting method of the Workpiece zero point based on duplex measurement is disclosed, it is characterized by comprising following steps, 1) contactless overall picture scanning survey obtains the whole audience 3 d scan data comprising workbench, workpiece blank；2) Model registration and feature identify, obtain initial position of the Workpiece zero point in lathe coordinate system；3) measurement point and measurement path planning determine contact type measurement point and planning survey path according to workpiece blank characters and appearances, the initial position of Workpiece zero point；4) the high-precision measurement of contact obtains accurate Workpiece zero point position coordinates.Have the advantages that the measurement efficiency of Workpiece zero point is high, precision is good, participated in without personnel.
Description
Technical field
The invention belongs to part machining center technical fields, and in particular to a kind of Workpiece zero point based on duplex measurement is adaptive
Answer setting method.
Background technique
Workpiece zero point, that is, workpiece coordinate system origin, for determining position and the numerical control of each element of workpiece geometrical body
The reference point of programming.Workpiece zero point is according to blank shape, can simplify program calculation, easily select to knife as principle.Into
Before row numerical control processing, need to obtain offset of the Workpiece zero point relative to machine origin, to determine Workpiece zero point in machine coordinates
The position of system.The setting of Workpiece zero point is one of more complicated back work in numerical control processing, the direct shadow of the accuracy of measurement
The machining accuracy of part is rung, time of measuring directly occupies lathe reality of work, affects the production efficiency of product.
Currently, the common Workpiece zero point setting method of CNC milling machine are as follows: trial-mix strength method, contact measuring head mensuration etc..
Test-cut met is measurement method the most traditional, is not necessarily to other ancillary equipments, but the requirement to operator is high, and time-consuming, is stablized
Property is poor, and measurement accuracy is not high.With the development of contact measuring head, contact measuring head is installed on main shaft tool apron and replaces cutter,
And measured using measuring head, measurement accuracy and efficiency, but the measurement to existing CNC milling machine Workpiece zero point can be effectively improved
Planning and measurement operation still need artificial participation.How the contexture by self and measurement process of Workpiece zero point measuring route are realized
Be automatically performed, with raising measurement process intelligence, and then guarantee measurement accuracy and improve measurement efficiency, be technical staff
The target seek assiduously.
Summary of the invention
The purpose of the present invention is to solve this problems, need personnel to join for the setting of existing CNC milling machine Workpiece zero point
With the deficiency of measuring technique, a kind of Workpiece zero point based on the compound contactless and contact type measurement adaptively side of setting is proposed
Method.The global pattern for obtaining workpiece is measured by non-contact scanning, and then the profile of workpiece is extracted according to scanning survey data
Feature instructs contact precise measurement, realizes without Workpiece zero point automatic measurement under manual intervention.
This method fusion non-contact measurement energy efficiency obtains workpiece overall picture and contact type measurement is able to achieve high-acruracy survey
The advantages of, feature identification and measurement path planning method are incorporated, and can be seamless with lathe itself by on-machine measurement technology
It is integrated, install convenient, the advantage of accurate positioning are played, so that the measurement efficiency of Workpiece zero point is high, precision is good, joins without personnel
With.
For achieving the above object, the technical scheme is that
The adaptive setting method of a kind of Workpiece zero point based on duplex measurement, it is characterised in that: include the following steps, 1) it is non-
Contact overall picture scanning survey obtains the whole audience 3 d scan data comprising workbench, workpiece blank；
2) Model registration and feature identify, obtain initial position of the Workpiece zero point in lathe coordinate system；
3) measurement point and measurement path planning, according to workpiece blank characters and appearances, the initial position of Workpiece zero point, determination is connect
Touch measurement point and planning survey path；
4) the high-precision measurement of contact obtains accurate Workpiece zero point position coordinates.
Preferably, step 1, contactless overall picture scanning survey, installs non-contact scanner on main axle cutter seat, leads to
The moving interpolation of X, Y linear axis is crossed, non-contact scanning instrument is driven to carry out the measurement of workbench, workpiece blank overall picture data, and
The point cloud data of measurement is transferred on host computer.
Preferably, step 2, Model registration and feature identify, workbench feature is isolated in measurement pointcloud data, will
Isolated work top is registrated with the work top in CNC milling machine virtual prototype, to realize measurement data model and void
Coordinate unification between quasi- model machine；In the point cloud data of measurement, the characteristic face comprising Workpiece zero point, and and this feature are identified
The adjacent regular pattern composite face in face；Workpiece zero point coordinate value is obtained according to work origin characteristic face, is obtained under unified reference frame
The opposite deviant of Workpiece zero point coordinate and machine origin coordinate is obtained, the initial setting up that lathe realizes work origin is passed through.
Preferably, step 3, measurement point and measurement path planning, based on the characteristic face and adjacent regular pattern composite identified
Face obtains workpiece blank characters and appearances and size, according to the initial position of Workpiece zero point, carries out contact type measurement point and measurement road
The planning of diameter, and generate measurement numerical control program.
Preferably, high-precision contact type measurement head, benefit are installed in step 4, the high-precision measurement of contact on main axle cutter seat
With measurement numerical control program, the automatic and accurate measurement of Workpiece zero point is realized.
Compared with prior art, the beneficial effects of the present invention are:
The beneficial effects of the present invention are:
The method of the present invention fusion non-contact measurement is high-efficient to be quickly obtained blank pattern and contact type measurement can be accurate
The advantages of adjustment, and the Seamless integration- with lathe itself is realized by on-machine measurement technology, realize the unmanned of work origin
Autonomous setting.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is that the present invention is based on the structural schematic diagrams of the adaptive setting method of the Workpiece zero point of duplex measurement.
Specific embodiment
Below in conjunction with attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.
As shown in Figure 1, a kind of adaptive setting method of Workpiece zero point based on duplex measurement, includes the following steps, 1) it is non-
Contact overall picture scanning survey obtains the whole audience 3 d scan data comprising workbench, workpiece；
The contactless overall picture scanning survey, workpiece to be processed is installed on the workbench by fixture, in main axle cutter
Non-contact scanner is installed on seat, in table stroke, by the moving interpolation of X, Y linear axis, drives non-contact scanning
Instrument carries out the measurement of workbench, workpiece blank overall picture data, obtains the point cloud data P comprising three-dimensional overall picturetest, and transmitted
Onto host computer.
2) Model registration and feature identify, obtain initial position of the Workpiece zero point in lathe coordinate system；
Data model registration is identified with feature, workbench feature is isolated in measurement pointcloud data, by isolated work
Make table top to be registrated with the work top in CNC milling machine virtual prototype, to realize between measurement data model and virtual prototype
Coordinate unification；In the point cloud data of measurement, the characteristic face comprising Workpiece zero point is identified, and adjacent with this feature face
Regular pattern composite face；Workpiece zero point coordinate value is obtained according to Workpiece zero point characteristic face, it is former that workpiece is obtained under unified reference frame
The opposite deviant of point coordinate and machine origin coordinate, the initial setting up of work origin is realized by lathe.
Model registration, by point cloud data PtestIt is converted into triangle grid model Mtest.It is obtained in triangle grid model data
The rule feature sub-grid data M of work topp, while the work top surface model in CNC milling machine virtual prototype also being turned
Change triangle grid model M intom.M is carried out using principle component analysisp、MmThe registration of two grid models.Thus by scan data model
Coordinate system and the coordinate system of virtual prototype come together.
Feature identification, in triangle grid model MtestIn, separation is free of workbench, only includes the sub-grid model M of blankn,
In MnThe characteristic face of middle identification blank.If blank is rectangle, then four planes of upper surface and surrounding are identified；For example cylinder
Shape then identifies upper surface and circular conical surface.Based on the Workpiece zero point characteristic face identified, Workpiece zero point is obtained, such as rectangle or circle
The upper surface central point p of columnc。
Initial coordinate solves, and under unified reference frame, calculates Workpiece zero point pcWith machine origin coordinate ptBetween difference
Value, pe(x, y, z)=pc-pt.By peX, Y, Z coordinate value be written in 54 coordinate of numerical control system G, i.e. realization initial workpiece is former
The automatic setting of point.
3) measurement point and measurement path planning, according to workpiece blank characters and appearances, the initial position of Workpiece zero point, determination is connect
Touch measurement point and planning survey path；
Measurement point and measurement path planning, based on the blank workpiece origin characteristic face and adjacent regular pattern composite identified
Face is prepared for accurate contact type measurement, carries out the planning of high-precision contact type measurement point and measuring route.
Since non-contact measurement precision is not high enough, the initial workpiece origin value of solution is simultaneously inaccurate, in high request
Occasion need further by contact it is high-precision measurement be modified.
On the tag type face identified, a measurement point is selected so that the positive negative direction of X, Y and Z axis are each forward.It advises respectively
Draw the measurement for carrying out Chosen Point upwardly close to blank from the positive negative direction of X, Y and Z axis losing side.The starting point of measurement is being parallel to X, Y, Z
At the position of axis and distance 50mm, the route of F.F. is not collided then based on the planning of 3-D scanning model with fixture, blank
Straight line.Contact type measurement point and measuring route based on planning generate measurement code by contact type measurement instruction format.
4) the high-precision measurement of contact obtains accurate Workpiece zero point position coordinates.
The high-precision measurement of contact installs high-precision contact type measurement head on main axle cutter seat, utilizes the survey automatically generated
Numerical control program is measured, realizes the measurement of planning point, and calculates the accurate coordinates value for obtaining Workpiece zero point, and corrects setting to numerical control system
X, Y, Z coordinate value in system G54 coordinate, to realize that Workpiece zero point is accurately to be arranged.
Embodiments described above is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
Claims (5)
1. a kind of adaptive setting method of Workpiece zero point based on duplex measurement, it is characterised in that: include the following steps, 1) it non-connects
Touch overall picture scanning survey obtains the whole audience 3 d scan data comprising workbench, workpiece blank；
2) Model registration and feature identify, obtain initial position of the Workpiece zero point in lathe coordinate system；
3) measurement point and measurement path planning determine contact according to workpiece blank characters and appearances, the initial position of Workpiece zero point
Measurement point and planning survey path；
4) the high-precision measurement of contact obtains accurate Workpiece zero point position coordinates.
2. the adaptive setting method of Workpiece zero point according to claim 1 based on duplex measurement, which is characterized in that step
One, contactless overall picture scanning survey installs non-contact scanner on main axle cutter seat, is transported by the interpolation of X, Y linear axis
It is dynamic, drive non-contact scanning instrument to carry out the measurement of workbench, workpiece blank overall picture data, and the point cloud data of measurement is transmitted
Onto host computer.
3. the adaptive setting method of Workpiece zero point according to claim 1 based on duplex measurement, which is characterized in that step
Two, Model registration and feature identify, workbench feature are isolated in measurement pointcloud data, by isolated work top and numerical control
Work top in milling machine virtual prototype is registrated, to realize the coordinate unification between measurement data model and virtual prototype；
In the point cloud data of measurement, the characteristic face comprising Workpiece zero point, and the regular pattern composite face adjacent with this feature face are identified；According to
Workpiece zero point coordinate value is obtained according to work origin characteristic face, Workpiece zero point coordinate and lathe are obtained under unified reference frame
The opposite deviant of origin realizes the initial setting up of work origin by lathe.
4. the adaptive setting method of Workpiece zero point according to claim 1 based on duplex measurement, which is characterized in that step
Three, measurement point and measurement path planning obtain workpiece blank feature based on the characteristic face and adjacent regular pattern composite face identified
Pattern and size carry out the planning of contact type measurement point and measuring route according to the initial position of Workpiece zero point, and generate measurement
Numerical control program.
5. the adaptive setting method of Workpiece zero point according to claim 1 based on duplex measurement, which is characterized in that step
Four, high-precision contact type measurement head is installed in the high-precision measurement of contact on main axle cutter seat, using measurement numerical control program, is realized
The automatic and accurate of Workpiece zero point measures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910437106.0A CN110057338B (en) | 2019-05-24 | 2019-05-24 | Workpiece origin self-adaptive setting method based on composite measurement |
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| CN201910437106.0A CN110057338B (en) | 2019-05-24 | 2019-05-24 | Workpiece origin self-adaptive setting method based on composite measurement |
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| CN110057338B CN110057338B (en) | 2021-04-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111361337A (en) * | 2020-03-27 | 2020-07-03 | 深圳市联合蓝海黄金材料科技股份有限公司 | Shape following measurement processing control method for three-dimensional circular jewelry |
| CN111843609A (en) * | 2020-07-30 | 2020-10-30 | 成都市新都立新金属制造有限公司 | Part machining and positioning method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR910005508B1 (en) * | 1989-05-23 | 1991-07-31 | 박준호 | Measuring and analysing method of numerical controller |
| CN1256990A (en) * | 1999-12-30 | 2000-06-21 | 清华大学 | Intelligent locating working method |
| US20040094711A1 (en) * | 2002-11-14 | 2004-05-20 | Lee Sung Q. | Non-contact scanning apparatus using frequency response separation scheme and scanning method thereof |
| DE102005026022A1 (en) * | 2005-06-03 | 2006-12-07 | Werth Messtechnik Gmbh | Coordinate measuring device and method for measuring an object with a coordinate measuring machine |
| CN101000499A (en) * | 2006-12-18 | 2007-07-18 | 浙江大学 | Contour machining method and system based on multi-sensor integral measuring |
| CN101657767A (en) * | 2007-02-19 | 2010-02-24 | 费劳恩霍弗应用技术研究院 | Method and device for controlling robots for welding workpieces |
| CN102430961A (en) * | 2011-10-28 | 2012-05-02 | 华中科技大学 | Free-form surface part processing system based on multi-sensor integrated measurement technology |
| CN103886600A (en) * | 2014-03-24 | 2014-06-25 | 四川睿光科技有限责任公司 | Continuous phase plate machining error identification method |
| CN105643092A (en) * | 2014-11-13 | 2016-06-08 | 大族激光科技产业集团股份有限公司 | Method for regaining coordinates of workpiece through CCD during combined machining |
| CN106643551A (en) * | 2016-12-07 | 2017-05-10 | 苏州笛卡测试技术有限公司 | Blade shape rapid scanning device and method |
| RU180960U1 (en) * | 2017-10-06 | 2018-07-02 | Общество с ограниченной ответственностью "ИЗОСКАН" (ООО "ИЗОСКАН") | Complex for automated measurement of geometric parameters of moving objects in a non-contact way |
-
2019
- 2019-05-24 CN CN201910437106.0A patent/CN110057338B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR910005508B1 (en) * | 1989-05-23 | 1991-07-31 | 박준호 | Measuring and analysing method of numerical controller |
| CN1256990A (en) * | 1999-12-30 | 2000-06-21 | 清华大学 | Intelligent locating working method |
| US20040094711A1 (en) * | 2002-11-14 | 2004-05-20 | Lee Sung Q. | Non-contact scanning apparatus using frequency response separation scheme and scanning method thereof |
| DE102005026022A1 (en) * | 2005-06-03 | 2006-12-07 | Werth Messtechnik Gmbh | Coordinate measuring device and method for measuring an object with a coordinate measuring machine |
| CN101000499A (en) * | 2006-12-18 | 2007-07-18 | 浙江大学 | Contour machining method and system based on multi-sensor integral measuring |
| CN101657767A (en) * | 2007-02-19 | 2010-02-24 | 费劳恩霍弗应用技术研究院 | Method and device for controlling robots for welding workpieces |
| CN102430961A (en) * | 2011-10-28 | 2012-05-02 | 华中科技大学 | Free-form surface part processing system based on multi-sensor integrated measurement technology |
| CN103886600A (en) * | 2014-03-24 | 2014-06-25 | 四川睿光科技有限责任公司 | Continuous phase plate machining error identification method |
| CN105643092A (en) * | 2014-11-13 | 2016-06-08 | 大族激光科技产业集团股份有限公司 | Method for regaining coordinates of workpiece through CCD during combined machining |
| CN106643551A (en) * | 2016-12-07 | 2017-05-10 | 苏州笛卡测试技术有限公司 | Blade shape rapid scanning device and method |
| RU180960U1 (en) * | 2017-10-06 | 2018-07-02 | Общество с ограниченной ответственностью "ИЗОСКАН" (ООО "ИЗОСКАН") | Complex for automated measurement of geometric parameters of moving objects in a non-contact way |
Non-Patent Citations (3)
| Title |
|---|
| DOHYUN KIM等: "Feed-system autotuning of a CNC machining center: Rapid system identification and fine gain tuning based on optimal search", 《PRECISION ENGINEERING》 * |
| 田建平等: "数控加工中工件原点找正方法的探讨", 《机械》 * |
| 舒启林等: "复合式镗铣加工中心箱体零件原点找正方法", 《工具技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111361337A (en) * | 2020-03-27 | 2020-07-03 | 深圳市联合蓝海黄金材料科技股份有限公司 | Shape following measurement processing control method for three-dimensional circular jewelry |
| CN111361337B (en) * | 2020-03-27 | 2021-05-28 | 深圳市联合蓝海黄金材料科技股份有限公司 | Shape following measurement processing control method for three-dimensional circular jewelry |
| CN111843609A (en) * | 2020-07-30 | 2020-10-30 | 成都市新都立新金属制造有限公司 | Part machining and positioning method |
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