- Email: [email protected]
Metrology
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programming system" designed to help operators produce simple component programmes, and a scanning probe. The scanning probe is claimed to enable detailed scanning of contours and profiles quicker and more accurately than any other form of scanning previously used. Based on the Sony Magnescale system, the probe comprises a head which is spring loaded, providing a constantsurface contact with the component being measured and a digital readout with inch/metric switching and zero reset facilities. The readout is in turn connected to the Maxi-Check's computer for the processing of inspection data and to enable the probe to be automatically driven over and around irregular surface profiles. A typical application of the scanning probe would be in the aeronautical industry where contours on turbine blades require checking. The probe automatically traverses the blade surface sampling the X, Y and Z co-ordinates between 10 and 50 times a second. Because of the limited computer
memory capacity the sampling rate varies according to the surface profile. The computer recognises an uneven surface and stores more co-ordinates around that particular area. When the probe traverses a relatively flat sur. face, fewer points are taken. Each time a position is stored in the computer, an audible warning is produced by the vdu. 1=hisefficient data storage system is said to enable comprehensive statistical analysis to be made of inspection data. Development work is at present being carried out on the application of a graphics terminal and plotter to produce a line drawing of a profile as the probe scans. Gauging
Machsize 6 were showing a multichannel programm~!ble gauging system which can not only measure size but also other parameters such a~ taper, concentricity, circularity and position. Statistical evaluators can be provided and a turning facility included. This could be particularly useful for moni-
j
toring drift, for example thermal distortion in a machine tool. Herbert Sigma ~ demonstrated their new Sigmasize Digital Model 202 single dimension electronic gauging indicator. Available for inch/metric indication, it will operate with any of the Sigma series of linear displacement transducers and gauging heads to check such features as length, diameter, thickness, taper, squareness and out-ofroundness. It is available with a choice of measuring ranges, reading to 0.1 /~m or 10/~in on the higher magnifications. 1. Advanced Metrology SystemsLtd, Kimberley House, Vaughan Way,.Leicester LE1 4SG, UK 2. FederalProducts Corporation, 1144 Eddy Street, Providence,Rhode Island 02901, USA or Federal Ayreid, Brick Knoll Park, Ashley Road, St Albans, Hertfordshire ALl 5PL, UK 3. Otto Wolpert-Werke GmbH, D~700 Ludwigshofen, Kopernikusstresse 11, West Germany. Sole UK agents Hahn and Kolb Great Britain Ltd, LeicesterRoad, Rugby, Warwickshire CV21 1NY, UK 4. C. StiefetmayerKG, Eberhard-BauerStrasse 32, D-7300 Esslingen,West Germany. Sole UK agents: Hahn and Kolb Great Britain Ltd. 5. Notsa, Lodge Works, Aston-on-Trent, Derby DE7 2A J, UK 6. MachsizeLtd, 4th Floor, York House, Clarendon Avenue, Leamington Spa, Warwickshire CV32 5PP, UK 7. HerbertSigma Ltd, Spring Road, Letchworth, Hertfordshire SG9 4A J, UK
Metr~y
An acrylic dialyser block being fine lapped to a surface finish better than 0.4 tJrn (16 pin) to ensure flatness of the face adjacent to the track. Williaam Cox L td specialise in the production of high quality engineered components in thermo-plastic materials for the scientific and medical engineering industries Williaam Cox Ltd., 14 Summer Lane, Birmingham B19 3TH, UK
174
The National Physical Laboratory are organising a Summer School on Mechanical and Optical Metrology to be held on 24-28 September, 1979. The aim is to provide a Critical review of traditional and modern measurement techniques used for dimensional inspection and quality control and will include consideration of future trends. The Summer school is intended for staff in industrial standards laboratories with practical experience in metrology. During the course, the following topics will be covered: length, interferometry, straightness and flatness, angle, alignment, multi-axis measurement, and errors and uncertainties. Practical laboratory work will illustrate and supplement the lectures. Further information from Summer School Secretary, Division of Mechanical and Optical Metrology, National Physical Laboratory, Teddington, Middlesex "I-W11 0LW, UK.
PRECISION ENGINEERING
programming system" designed to help operators produce simple component programmes, and a scanning probe. The scanning probe is claimed to enable detailed scanning of contours and profiles quicker and more accurately than any other form of scanning previously used. Based on the Sony Magnescale system, the probe comprises a head which is spring loaded, providing a constantsurface contact with the component being measured and a digital readout with inch/metric switching and zero reset facilities. The readout is in turn connected to the Maxi-Check's computer for the processing of inspection data and to enable the probe to be automatically driven over and around irregular surface profiles. A typical application of the scanning probe would be in the aeronautical industry where contours on turbine blades require checking. The probe automatically traverses the blade surface sampling the X, Y and Z co-ordinates between 10 and 50 times a second. Because of the limited computer
memory capacity the sampling rate varies according to the surface profile. The computer recognises an uneven surface and stores more co-ordinates around that particular area. When the probe traverses a relatively flat sur. face, fewer points are taken. Each time a position is stored in the computer, an audible warning is produced by the vdu. 1=hisefficient data storage system is said to enable comprehensive statistical analysis to be made of inspection data. Development work is at present being carried out on the application of a graphics terminal and plotter to produce a line drawing of a profile as the probe scans. Gauging
Machsize 6 were showing a multichannel programm~!ble gauging system which can not only measure size but also other parameters such a~ taper, concentricity, circularity and position. Statistical evaluators can be provided and a turning facility included. This could be particularly useful for moni-
j
toring drift, for example thermal distortion in a machine tool. Herbert Sigma ~ demonstrated their new Sigmasize Digital Model 202 single dimension electronic gauging indicator. Available for inch/metric indication, it will operate with any of the Sigma series of linear displacement transducers and gauging heads to check such features as length, diameter, thickness, taper, squareness and out-ofroundness. It is available with a choice of measuring ranges, reading to 0.1 /~m or 10/~in on the higher magnifications. 1. Advanced Metrology SystemsLtd, Kimberley House, Vaughan Way,.Leicester LE1 4SG, UK 2. FederalProducts Corporation, 1144 Eddy Street, Providence,Rhode Island 02901, USA or Federal Ayreid, Brick Knoll Park, Ashley Road, St Albans, Hertfordshire ALl 5PL, UK 3. Otto Wolpert-Werke GmbH, D~700 Ludwigshofen, Kopernikusstresse 11, West Germany. Sole UK agents Hahn and Kolb Great Britain Ltd, LeicesterRoad, Rugby, Warwickshire CV21 1NY, UK 4. C. StiefetmayerKG, Eberhard-BauerStrasse 32, D-7300 Esslingen,West Germany. Sole UK agents: Hahn and Kolb Great Britain Ltd. 5. Notsa, Lodge Works, Aston-on-Trent, Derby DE7 2A J, UK 6. MachsizeLtd, 4th Floor, York House, Clarendon Avenue, Leamington Spa, Warwickshire CV32 5PP, UK 7. HerbertSigma Ltd, Spring Road, Letchworth, Hertfordshire SG9 4A J, UK
Metr~y
An acrylic dialyser block being fine lapped to a surface finish better than 0.4 tJrn (16 pin) to ensure flatness of the face adjacent to the track. Williaam Cox L td specialise in the production of high quality engineered components in thermo-plastic materials for the scientific and medical engineering industries Williaam Cox Ltd., 14 Summer Lane, Birmingham B19 3TH, UK
174
The National Physical Laboratory are organising a Summer School on Mechanical and Optical Metrology to be held on 24-28 September, 1979. The aim is to provide a Critical review of traditional and modern measurement techniques used for dimensional inspection and quality control and will include consideration of future trends. The Summer school is intended for staff in industrial standards laboratories with practical experience in metrology. During the course, the following topics will be covered: length, interferometry, straightness and flatness, angle, alignment, multi-axis measurement, and errors and uncertainties. Practical laboratory work will illustrate and supplement the lectures. Further information from Summer School Secretary, Division of Mechanical and Optical Metrology, National Physical Laboratory, Teddington, Middlesex "I-W11 0LW, UK.
PRECISION ENGINEERING