WO2008076608A1 - Method and system for measuring an object - Google Patents
Method and system for measuring an object Download PDFInfo
- Publication number
- WO2008076608A1 WO2008076608A1 PCT/US2007/085994 US2007085994W WO2008076608A1 WO 2008076608 A1 WO2008076608 A1 WO 2008076608A1 US 2007085994 W US2007085994 W US 2007085994W WO 2008076608 A1 WO2008076608 A1 WO 2008076608A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- range sensor
- accordance
- scan
- cutting tool
- optical sensor
- Prior art date
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Classifications
-
- 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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
Definitions
- This invention relates generally to measurement systems and, more particularly, to methods and systems for measuring cutting tools.
- Cutting tools are an essential component used in manufacturing aircraft parts, such as engine blades. At least some known cutting tools are manufactured with complex geometric shapes and sharp and/or curved edges. As such, maintaining quality control of cutting tools during their fabrication may be essential to controlling a quality of components manufactured using the cutting tools. Specifically, if a plurality of tools is used to manufacture a plurality of identical engine blades, it is essential each of the cutting tools be fabricated with accurately controlled contours and dimensions. However, because of known manufacturing techniques, often it is common for known cutting tools to be manufactured with dimensions and contours that are not always adequately inspected or controlled. Accordingly, at least some known engine blades may be manufactured with different dimensions and contours.
- Figure 1 illustrates a design model for use in manufacturing a cutting tool and two exemplary cutting tools manufactured based on the design model. More specifically, Figure l(a) illustrates a cutting tool manufactured with a first grinding machine, Figure l(b) illustrates a cutting tool manufactured with a second grinding machine and Figure l(c) illustrates the design model for the cutting tool.
- cutting tools are often fabricated with contours and dimensions that differ from the design model. More specifically, a cutting tool manufactured with a first grinding machine may include contours and dimensions that differ from a cutting tool manufactured with a second grinding machine. [0004] Accordingly, it is common to inspect cutting tools to ensure uniformity.
- a method of measuring an object includes positioning the object on a moveable stage, performing a rotary scan of the object with a range sensor, and determining geometric parameters of the object based on the rotary scan.
- a system for measuring an object includes a range sensor for performing a rotary scan of the object to determine geometrical parameters of the object, and a movable stage for retaining the object.
- a method for scanning an object with known helical configuration may be scanned with a helical scan motion of the object.
- a range sensor for performing a rotary scan of an object to determine geometrical parameters of the object.
- the range sensor includes an optical sensor and a periscope coupled to the optical sensor. At least one of the optical sensor and the periscope is configured to rotate. The range sensor is configured to move relative to the object.
- Figure 1 is an exemplary cutting tool design model and two cutting tools manufactured based on the design model;
- Figure 2 is a view of an exemplary measurement system that may be used to measure a cutting tool;
- Figure 3 is an alternative view of the measurement system shown in Figure 2;
- Figure 4 is a view of an exemplary stage that may be used with the measurement system shown in Figures 2 and 3;
- Figure 5 is a view of an exemplary range sensor that may be used with the measurement system shown in Figures 2 and 3.
- the present invention provides exemplary methods and a system for use in measuring an object.
- the system includes a range sensor for performing a rotary scan of the object, and a movable stage for retaining the object.
- the range sensor includes an optical sensor and a periscope coupled to the optical sensor. At least one of the optical sensor and the periscope is configured to rotate.
- the range sensor is configured to move relative to the object. Accordingly, the system provides a method of helically scanning the object to facilitate gathering point cloud data and automatically measuring each parameter of an object in such a manner that reproducibility of the measurements is facilitated.
- Figure 2 is a view of an exemplary system 100 that may be used to measure a cutting tool 102.
- Figure 2 is a view of system 100 oriented to measure an end 140 of a cutting tool 102.
- Figure 3 is an alternative view of system 100.
- Figure 3 illustrates system 100 oriented to scan a side 142 of cutting tool 102.
- system 100 includes a base 104, a stage 106, and a range sensor 108.
- Figure 4 is a view of stage 106
- Figure 5 is a perspective view of range sensor 108.
- system 100 is electronically coupled to at least one of a computer, a database, and/or a processor to store and analyze data. Moreover, in the exemplary embodiment, system 100 is electronically coupled to at least one monitor (not shown) to display data.
- stage 106 is moveable relative to base 104, and in the exemplary embodiment, includes a first stage 120 and a second stage 122.
- First stage 120 is oriented to retain cutting tool 102 thereon. More specifically, in the exemplary embodiment, first stage 120 includes a rotary axis 124 that is oriented to retain cutting tool 102 thereon.
- system 100 is sized and shaped to retain and measure any cutting tool 102 thereon that has a length Li within a range of approximately zero millimeters to approximately 200 millimeters.
- system 100 is sized and shaped to retain and measure any cutting tool 102 thereon that has a diameter Di within a range of approximately zero millimeters to approximately 25.4 millimeters.
- system 100 may be sized and shaped to retain and measure any cutting tool having any length Li and/or diameter Di that is capable of being retained and measured by system 100.
- cutting tool 102 is retained using any suitable coupling mechanism and/or retention mechanism that enables system 100 to operate as described herein.
- first stage 120 is an X-Y stage. Specifically, first stage 120 is configured to translate along an X-axis and a Y-axis. More specifically, in the exemplary embodiment, first stage 120 is configured to translate along the X-axis within a range of approximately zero millimeters to approximately 50 millimeters with a resolution of approximately 0.1 micrometers. Further, in the exemplary embodiment, first stage 120 is configured to translate along the Y-axis within a range of approximately zero millimeters to approximately one hundred millimeters with a resolution of approximately 0.1 micrometers.
- first stage 120 is configured to translate along the X-axis and/or the Y-axis within any suitable range having any suitable resolution that enables system 100 to operate, as described herein.
- rotary axis 124 is configured to rotate cutting tool 102 about a Z-axis. More specifically, rotary axis 124 rotates cutting tool 102 about a cutting tool centerline C 1 .
- rotary axis 124 is configured to rotate approximately 360° with a resolution of approximately 0.0001 degrees.
- rotary axis 124 is configured to rotate within any suitable range with any suitable resolution that enables system 100 to operate, as described herein.
- range sensor 108 is coupled to second stage 122.
- second stage 122 is an X- Y-Z-stage that is configured to translate range sensor 108 along at least one of an X- axis, a Y-axis, and a Z-axis.
- second stage 122 is configured to translate range sensor 108 along the Z-axis within a range of approximately zero millimeters to approximately 250 millimeters with a resolution of approximately 0.1 micrometers.
- stage 122 is configured to translate range sensor 108 along the Z-axis within any suitable range and with any suitable resolution that enables system 100 to operate, as described herein.
- second stage 122 may be configured to translate range sensor 108 along the X and Y axis within a range that is substantially similar to the range of first stage 120 and with a resolution that is substantially similar to the resolution of first stage 120.
- second stage 122 is configured to translate range sensor 108 along the X and Y axis within any suitable range with any suitable resolution that enables system 100 to operate, as described herein.
- range sensor 108 is positionable at variable distances from first stage 120.
- range sensor 108 is positionable at variable distances D 2 from cutting tool 102.
- first stage 120 is oriented to move and/or rotate cutting tool 102
- second stage 122 is oriented to position range sensor 108 at a desired distance Di from cutting tool 102.
- first stage 120 and second stage 122 facilitate measuring any point of cutting tool 102, as described below.
- the X, Y, and Z translation of stage 106 has an absolute accuracy of approximately one micrometer to approximately two micrometers. Further, in the exemplary embodiment, the X, Y, and Z translation of stage 106 has a repeatability of approximately 0.5 micrometers to approximately 1 micrometer. In addition, in the exemplary embodiment, the X, Y, and Z translation of stage 106 has an orthogonality of approximately 0.0015 degrees. In an alternative embodiment, the X, Y, and Z translation of stage 106 has any suitable absolute accuracy, repeatability, and/or orthogonality that enables system 100 to operate, as described herein.
- range sensor 108 includes an optical sensor 200 and a periscope 202 that is coupled to optical sensor 200.
- range sensor 108 is configured to perform a rotary scan of cutting tool 102.
- optical sensor 200 is a conoscopic sensor, for example, the Optimet Smart Probe described in U.S. Patent 5,953,137.
- optical sensor 200 is any ranging type sensor that is capable of operating as described herein.
- optical sensor 200 is configured to direct a beam of light 204 through periscope 202, such that light 204 is directed toward a portion of cutting tool 102.
- light 204 reflects off of cutting tool 102, such that a beam of light 206 is directed towards optical sensor 200.
- Optical sensor 200 receives light 206, forms an interference pattern of said light and measures a wavelength thereof.
- optical sensor 200 determines a distance between optical sensor 200 and cutting tool 102 based on a difference between a wavelength of the pattern of light 204 and a wavelength of the pattern of light 206. In one embodiment, optical sensor 200 determines the distance with an accuracy of approximately ⁇ 1.5 microns.
- optical sensor 200 determines the distance with any suitable accuracy that enables system 100 to operate, as described herein. Moreover, in the exemplary embodiment, optical sensor 200 uses a frequency of up to approximately 3000 kilohertz to acquire data. In an alternative embodiment, optical sensor 200 uses any suitable frequency to acquire data that enables system 100 to operate, as described herein.
- system 100 By determining a distance to a plurality of points of cutting tool 102, system 100 identifies various geometric parameters of cutting tool 102. Specifically, the distance determinations enable system 100 to generate a scanned point cloud that is used to generate an accurate cross section or three dimensional model of cutting tool 102.
- range sensor 108 includes a rotation mechanism 210 that is coupled to periscope 202.
- rotation mechanism 210 rotates periscope 202 within a range of approximately 0° to approximately 90°.
- rotation mechanism 210 rotates periscope 202 within any suitable range that enables system 100 to operate, as described herein.
- rotation mechanism 210 is configured to rotate periscope 202, to enable a periscope lens 212 to align with an end 140 of cutting tool 102, as shown in Figure 2, or to align with a side 142 of cutting tool 102, as shown in Figure 3.
- rotation mechanism 210 is configured to rotate periscope 202, such that lens 212 is aligned with any point between end 140 of cutting tool 102 and side 142 of cutting tool 102.
- Rotation mechanism 210 may be any suitable rotation mechanism that enables system 100 to operate, as described herein.
- optical sensor 200 is also configured to rotate. As such, lens 212 is enabled to align with any portion of cutting tool 102 by rotating periscope 202 and/or rotating optical sensor 200.
- periscope 202 and/or optical sensor 200 is rotated to align lens 212 with a point of cutting tool 102 that is to be measured.
- Light 204 from optical sensor 200 is directed through periscope lens 212 towards cutting tool 102.
- Light 206 reflects off of cutting tool 102 and is directed through periscope lens 212 towards optical sensor 200.
- cutting tool 102 is positioned on rotary axis 124 and is aligned with lens 212.
- first stage 120 and second stage 122 are manipulated to position cutting tool 102 in relation to range sensor 108.
- Periscope 202 and/or optical sensor 200 are then rotated to align lens 212 with an individual point of cutting tool 102
- Light 204 from optical sensor 200 is directed through periscope lens 212 towards the individual point of cutting tool 102 to facilitate producing reflected light 206.
- Light 206 is directed through periscope lens 212 towards optical sensor 200, such that a distance between optical sensor 200 and cutting tool 102 may be determined.
- the determined distance is stored in a computer (not shown) or some other similar device.
- At least one axis of first stage 120, second stage 122, third stage 124, optical sensor 200, and periscope 202 is then manipulated to enable a second point of cutting tool 102 to be scanned.
- the process of scanning individual points is repeated until a desired portion of cutting tool 102 has been measured.
- system 100 is automated to measure a plurality of individual points without user intervention.
- system 100 can perform pre-scanning to facilitate motion planning to drive system 100 to facilitate a more accurate scan, in comparison to known measurement systems. Simultaneously, each axis of stage 106 and range sensor 108 can be simultaneously triggered to achieve data synchronization. Accordingly, system 100 generates a point cloud from which geometric parameters of cutting tool 102 can be determined. As such, system 100 is enabled to perform three-dimensional modeling for downstream CAE analysis and cutting physics simulation.
- the data acquired while measuring cutting tool 102 enables a scanned point cloud to be generated from which parameters of cutting tool 102 can be extracted.
- the scanned point cloud provides three-dimensional modeling capability and is utilized to perform CAD modeling for downstream CAE analysis and cutting physics simulation.
- system 100 utilizes the acquired data to perform at least one of correcting mechanical errors associated with measuring cutting tool 102, calculating parameters of cutting tool 102 and generating a three-dimensional model of cutting tool 102.
- the cutting parameters of cutting tool 102 may be automatically stored in a spreadsheet, interactively displayed in a graphical window, or printed in hardcopy form.
- a method of measuring an object includes positioning the object on a moveable stage, performing a rotary scan of the object with a range sensor, and determining geometric parameters of the object based on the rotary scan.
- the present invention provides a method and system for measurement of an object that enables a greater reproducibility than known measurement systems.
- the system enables a user to obtain at least one of a section scan and a scanned point cloud and determine multiple geometric parameters of an object.
- the initial rough scanning enables the system to perform motion planning to efficiently guide the motion of the system.
- the system provides a more accurate determination of a cutting tool's dimensions and contours, in comparison to known measurement systems.
- the improved measurements enable the system to automatically display parameters of the cutting tool in a spreadsheet and/or graphical window and/or automatically produce a three dimensional model of the cutting tool.
- the present invention provides a reproducibility that facilitates providing more uniform cutting tools for manufacturing engine blades. As such, the engine blades manufactured with such cutting tools are facilitated to be more uniform and/or accurately manufactured. Accordingly, the present invention facilitates improving engine blade manufacturing, such that an efficiency and/or useful life of the engine blades and/or an engine including the engine blade is facilitated to be increased.
- an element or step recited in the singular and proceeded with the word "a” or “an” should be understood as not excluding plural said elements or steps, unless such exclusion is explicitly recited.
- references to "one embodiment" of the present invention are not intended to be interpreted as excluding the existence of additional embodiments that also incorporate the recited features.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002672475A CA2672475A1 (en) | 2006-12-20 | 2007-11-30 | Method and system for measuring an object |
MX2009006226A MX2009006226A (en) | 2006-12-20 | 2007-11-30 | Method and system for measuring an object. |
EP07864943A EP2095066A1 (en) | 2006-12-20 | 2007-11-30 | Method and system for measuring an object |
CN2007800515862A CN101611291B (en) | 2006-12-20 | 2007-11-30 | Method and system for measuring an object |
JP2009543020A JP2010513927A (en) | 2006-12-20 | 2007-11-30 | Object measurement method and system |
AU2007334217A AU2007334217A1 (en) | 2006-12-20 | 2007-11-30 | Method and system for measuring an object |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/642,076 | 2006-12-20 | ||
US11/642,076 US7768655B2 (en) | 2006-12-20 | 2006-12-20 | Methods and system for measuring an object |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008076608A1 true WO2008076608A1 (en) | 2008-06-26 |
Family
ID=39154015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2007/085994 WO2008076608A1 (en) | 2006-12-20 | 2007-11-30 | Method and system for measuring an object |
Country Status (8)
Country | Link |
---|---|
US (1) | US7768655B2 (en) |
EP (1) | EP2095066A1 (en) |
JP (1) | JP2010513927A (en) |
CN (1) | CN101611291B (en) |
AU (1) | AU2007334217A1 (en) |
CA (1) | CA2672475A1 (en) |
MX (1) | MX2009006226A (en) |
WO (1) | WO2008076608A1 (en) |
Cited By (1)
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JP2010261941A (en) * | 2009-04-29 | 2010-11-18 | General Electric Co <Ge> | Method and system for extracting gash parameter of cutting tool |
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US7876454B2 (en) * | 2006-12-20 | 2011-01-25 | General Electric Company | Method and system for measurement of a cutting tool |
CN101358825B (en) * | 2007-08-01 | 2010-09-29 | 鸿富锦精密工业(深圳)有限公司 | End pulsation measurement instrument |
WO2009113068A1 (en) * | 2008-03-12 | 2009-09-17 | Optimet, Optical Metrology Ltd. | Intraoral imaging system and method based on conoscopic holography |
US7924439B2 (en) * | 2008-09-29 | 2011-04-12 | General Electric Company | Method and system for parameter extraction of a cutting tool |
US10274263B2 (en) | 2009-04-09 | 2019-04-30 | General Electric Company | Method and apparatus for improved cooling of a heat sink using a synthetic jet |
US9478479B2 (en) | 2010-10-26 | 2016-10-25 | General Electric Company | Thermal management system and method |
US9615482B2 (en) * | 2009-12-11 | 2017-04-04 | General Electric Company | Shaped heat sinks to optimize flow |
WO2012168904A2 (en) * | 2011-06-07 | 2012-12-13 | Creaform Inc. | Sensor positioning for 3d scanning |
CN102322818A (en) * | 2011-08-11 | 2012-01-18 | 武汉材料保护研究所 | Method for measuring VB (visual basic) value of mechanical processing turning insert by optical three-dimensional shape instrument. |
CN103017677B (en) * | 2011-09-23 | 2015-07-15 | 通用电气公司 | Method for measuring profile of edge of cutting tool |
JP6429772B2 (en) | 2012-07-04 | 2018-11-28 | クレアフォーム・インコーポレイテッドCreaform Inc. | 3D scanning and positioning system |
JP6267700B2 (en) | 2012-07-18 | 2018-01-24 | クレアフォーム・インコーポレイテッドCreaform Inc. | 3D scanning and positioning interface |
KR101448510B1 (en) * | 2014-04-10 | 2014-10-14 | 순환엔지니어링 주식회사 | System of measuring orthogonality of stage and home positioning method using the same |
DE102014111240A1 (en) * | 2014-08-07 | 2016-02-11 | Walter Maschinenbau Gmbh | Method and device for determining at least one model parameter of a virtual tool model of a tool |
DE102015105999B4 (en) * | 2015-04-20 | 2016-11-10 | Walter Maschinenbau Gmbh | Method and device for material-removing machining of a tool |
JP6691837B2 (en) * | 2016-06-27 | 2020-05-13 | 株式会社キーエンス | measuring device |
EP3496806B1 (en) | 2016-08-08 | 2022-07-06 | Deep Brain Stimulation Technologies Pty. Ltd. | Systems and methods for monitoring neural activity |
WO2018213872A1 (en) | 2017-05-22 | 2018-11-29 | The Bionics Institute Of Australia | "systems and methods for monitoring neural activity" |
DE102017106741B4 (en) * | 2017-03-29 | 2019-11-14 | Jenoptik Industrial Metrology Germany Gmbh | surface measuring instrument |
DE102018103420A1 (en) | 2018-02-15 | 2019-08-22 | Jenoptik Industrial Metrology Germany Gmbh | Measuring instrument for surface or contour measurement |
CN109444937B (en) * | 2018-08-08 | 2021-04-02 | 北京木业邦科技有限公司 | Tree modeling and tending method and device, electronic equipment and storage medium |
DE102020108182A1 (en) | 2019-05-07 | 2020-11-12 | Jenoptik Industrial Metrology Germany Gmbh | Surface measuring device |
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- 2007-11-30 CA CA002672475A patent/CA2672475A1/en not_active Abandoned
- 2007-11-30 CN CN2007800515862A patent/CN101611291B/en not_active Expired - Fee Related
- 2007-11-30 AU AU2007334217A patent/AU2007334217A1/en not_active Abandoned
- 2007-11-30 JP JP2009543020A patent/JP2010513927A/en active Pending
- 2007-11-30 EP EP07864943A patent/EP2095066A1/en not_active Withdrawn
- 2007-11-30 MX MX2009006226A patent/MX2009006226A/en active IP Right Grant
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Also Published As
Publication number | Publication date |
---|---|
CN101611291B (en) | 2012-04-18 |
US20080148590A1 (en) | 2008-06-26 |
CN101611291A (en) | 2009-12-23 |
EP2095066A1 (en) | 2009-09-02 |
CA2672475A1 (en) | 2008-06-26 |
MX2009006226A (en) | 2009-06-22 |
AU2007334217A1 (en) | 2008-06-26 |
JP2010513927A (en) | 2010-04-30 |
US7768655B2 (en) | 2010-08-03 |
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