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machine vision

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Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006439
EISBN: 978-1-62708-190-0
... Abstract Machine vision, also referred to as computer vision or intelligent vision, is a means of simulating the image recognition and analysis capabilities of the human eye and brain system with digital techniques. The machine vision functionality is extremely useful in inspection, supervision...
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Published: 01 August 2018
Fig. 2 Schematic illustration of the key components of a machine vision system More
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Published: 01 August 2018
Fig. 3 Overview of the machine vision process. CCD, charge-coupled device; CMOS, complementary metal oxide semiconductor; CAD, computer-aided design; CAM, computer-aided manufacturing More
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Published: 01 August 2018
Fig. 5 Schematics of commonly used illumination techniques for machine vision systems. (a) Backlighting. (b) Frontlighting, diffuse. (c) Frontlighting, direct dark field. (d) Frontlighting, direct bright field. (e) Frontlighting, polarized. (f) Structured light. Source: Ref 1 More
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Published: 01 August 2018
Fig. 10 Machine vision inspection of an automotive fuel sender tube with a cycle time of 2 s per part. (a) Schematic of one end of the fuel tube assembly showing the three critical dimensions in the workpiece. A-A, back of bead to front of tube; B-B, maximum bead diameter; C-C, microfinished More
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Published: 01 August 2018
Fig. 15 The machine vision system detects and records the bore hole and guides a robot to grab and assemble a part. Source: Ref 4 . Courtesy of Vision Systems Design More
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0009152
EISBN: 978-1-62708-186-3
... sensors, photoelectric sensors, and ultrasonic sensors. The article provides information on the sensors used for detecting tool breakages and flaws in parts, the measurement of material flow during sheet metal forming, and lubrication. It also describes the operating stages of machine vision systems used...
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Published: 01 August 2018
Fig. 28 (a) Detail of sensor ring showing the kind of defect that is checked. (b) Components used in the machine vision system to check the antilock brake system (ABS) sensor ring. Source: Ref 32 More
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Published: 01 August 2018
Fig. 13 Polar coordinate vision used to inspect roller bearing assemblies by verification of roller placement. (a) Actual machine vision monitor image of two bearing assemblies on a conveyor belt. (b) The first step, requiring <70 ms, is to locate bearing within the image as indicated More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003228
EISBN: 978-1-62708-199-3
... calipers, and dial gages, have been supplemented with modern high-technology metrology tools, such as laser inspection, coordinate measuring machines, and machine vision and robotic inspection systems ( Ref 4 , 5 , 6 ). The selection of a metrology system is highly dependent on the specific...
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Published: 01 January 1989
Fig. 7 Ultrasonic impact grinding machine with computer numerical control and camera vision. Courtesy of Bullen Ultrasonics More
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005292
EISBN: 978-1-62708-187-0
... with the capability for a high degree of automation. The process is adaptable to the use of metal-saving designs and can also replace an assembly of separate parts with a single casting. Usually, a minimum of machining or finishing is needed to turn a raw part into a finished component. One basic process limitation...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006445
EISBN: 978-1-62708-190-0
... to be used in-line for typical production rates. Considerable effort is required for setup and system training. Examples of the use of automated visual examination of PM parts using machine vision are presented in Ref 32 . One of the examples shows the detection of a chipped tooth on an antilock brake...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006447
EISBN: 978-1-62708-190-0
... colored reconstruction of a pit hole point cloud Other Visual Methods Automated Optical Inspection Systems Visual inspection involves human vision alone or combines various optical aids. Machine vision replaces human vision in some industries where high-volume production of high-quality parts...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006954
EISBN: 978-1-62708-439-0
... in directed-energy deposition (DED) and electron beam PBF (E-PBF) are mentioned. Temperature metrology adds an additional layer of complexity, in contrast to high-speed imaging, machine vision, photogrammetry, and so on. A basic theoretical background on radiation thermometry is provided, with notes on how...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002159
EISBN: 978-1-62708-188-7
... for tool wear to ensure repeatable depth of cut Complete computer numerical control (CNC) of all axes, and camera vision ( Fig. 7 ) An ultrasonic frequency display to indicate any deviation from 20 kHz due to excessive tool wear or breakage Automatic control of the complete machining cycle...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006336
EISBN: 978-1-62708-179-5
... provide a digital readout or completely automate the process with software and programmed axes control. Vision system is a somewhat imprecise term and is an amalgam of technologies to perform specific tasks. Generically, vision systems use digital imaging technology to allow the machine to see...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005355
EISBN: 978-1-62708-187-0
... the orientation of the part. The robot picks up the part and takes it to the grinding machines. This method eliminates the need for costly fixturing. Vision systems, along with quick-change grippers, provide a quick changeover between jobs, which makes a cell very productive. A large area of cost savings...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006532
EISBN: 978-1-62708-207-5
... Abstract This article focuses on a variety of laser beam machining (LBM) operations of aluminum and its alloys, namely, laser cutting, laser drilling, laser milling, laser turning, laser grooving, laser scribing, laser marking, and laser micromachining. It presents different approaches...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006764
EISBN: 978-1-62708-295-2
... Laser/dimensional metrology photogrammetry, laser total station, laser tracker, coordinate measurement machines Either angle/angle stereo image or angle/time-of-flight allows measurement of surface profile of the object. Reverse engineering, dimensional metrology, crack and pit detection Limited...