BRIGHT-STRATO SERIES

Transcription

1 Coordinate Measuring Machines BRIGHT-STRATO SERIES CNC Coordinate Measuring Machine Bulletin No Moving-bridge type CMM with excellent measuring accuracy. Its measuring envelope is suitable for medium-to-large workpieces.

2 High-accuracy measuring in the 1µm class*1 Improved Machine Rigidity Provides Excellent Accuracy *1 : Bright-STRATO 700/900 Series World-class measuring accuracy from a moving-bridge type CMM. A model with a maximum measuring envelope of x x59.25 (3005 x 5005 x 1505mm) is available to cover the medium-to-large workpiece range. The FEM analysis below shows a stress distribution comparison within the XZ structure of the previous Bright- STRATO models when the same force is applied to each. This shows that this new Bright-STRATO is more rigid and stable than the previous model. [Comparison of XZ structure rigidity] Old model New model The Y-axis guide is machined into the granite base and the high-rigidity air bearing developed by Mitutoyo retains a stable linear-motion performance for an extended period of time. All parts are produced at Mitutoyo s own CMM plant. DC motor and ball-screw drive mechanisms on each axis allow this CMM to perform continuously at high speed maximums of /s (430mm/s)*1 with high acceleration maximums of /s2 (1700mm/s2 )*1 Machining the measuring table Base/bridge structure Y-axis guide Machining air bearings 2

3 High-accuracy Glass Scales Each axis is fitted with a highly accurate glass scale produced at Mitutoyo s lab quality, underground linear scale plant. Condenser lens Scale unit principle diagram Index scale Light source Photoelectric device Main scale Digital Servo Technology The position and speed of Bright-STRATO s moving elements are controlled by digital processing circuits and servos. Digital servo control has the advantages of minimum drift, wide dynamic range and easy installation of alternate control algorithms. An analog drive system generally has a resonant frequency in its response as shown in graph (a). The presence of this resonant frequency causes mechanical vibration that results in the deterioration of accuracy. Graph (b) shows that this resonant frequency is absent from the digital servo system. Also, Mitutoyo has developed LSI circuits specifically for digital servo control, making a significant contribution to size and price reduction of the servo system. [Amplitude/Frequency response of control systems] 30 dbv (a) Analog drive system Resonant Freq 30 dbv (b) Digital servo system dbmag 10dB/ -70 dbv LOG FREQ (khz) 5 dbmag 10dB/ -70 dbv LOG FREQ (khz) 5 Resistance to External Vibration Vibrations transmitted up through the floor cause measurement variations in a CMM. The auto-leveling pneumatic vibration-damping unit available as an option for the previous model is supplied as a standard accessory with the Bright-STRATO 700/900/1600 series. This vibration-damping unit has the functions of not only isolating the machine from floor vibrations, but also returning it to horizontal quickly by detecting the load variation due to the travel of the bridge or setting of a workpiece with sensors. Auto-leveling pneumatic vibration-damping unit Vibration-damping unit installation 3

4 Temperature Compensation (Patent Pending) Eliminating Geometric Errors in the Machine Due to Temperature Change Structurally, a CMM does not have the problems a machine tool has with heat generation from motors, bearings, cutting tool, main spindle and coolant. Therefore the potentially negative effects on machine geometry caused by internal heat sources can be eliminated easily by good thermal design. Variations in ambient temperature, however, as well as radiated heat received from external sources, will greatly affect measuring accuracy due to unequal thermal deformation of the CMM elements unless precautions are taken in the machine design. Thermal influence Heat source Heat conduction Thermal change Thermal distribution Errors Room environment (Air conditioning, lighting, geothermal heat, etc.) Heat conduction (within the same object) Temperature gradient Uniform temperature distribution (except for 20 C) Machine main unit Geometric error Dimensional error Human Machine main unit (Control unit, motors, etc.) Heat transfer (between adjacent objects) Thermal radiation Temperature variation Non-uniform temperature distribution Workpiece/ reference gage Geometric error Dimensional error Overall error The following measures are implemented in the Bright-STRATO series to minimize thermally-generated geometry errors due to ambient temperature change. A material with high thermal conductivity is used for major structural members to make the temperature distribution uniform and improve temperature tracking ability. Strains in the joints between structural members due to differential expansion are avoided by using the same material throughout. A thermal expansion relief mechanism is used for components, such as glass scales. Extensive FEM thermal analysis was used to design a thermally symmetric structure that ensures the measuring machine expands evenly. Heat accumulation inside the control unit or covers has been practically eliminated. Relationship between ambient temperature change and squareness errors TEMPERATURE ( C ) Ambient temperature 30 air C/h 2 C/h XY Squareness error XZ Squareness error These graphs show test data for squareness errors between the X, Y and Z axes caused by variation in ambient temperature. The results show that squareness errors in the Bright-STRATO series are held to less than +/-1 arc-second over a wide range of temperature. YZ Squareness error time (hour) 4

5 Temperature Compensation The Temperature Compensation Function uses information from temperature sensors located on each X, Y and Z axis scale, and the workpiece, to calculate length compensations that are then applied to the scale readings. This system works in conjunction with the design of the main unit that ensures the measuring envelope deforms evenly with change of temperature. This is very different from a system that simply provides a length compensation for a measurement. The system allows high-accuracy measurements to be made while the Temperature compensation system ambient temperature varies within the range specified for guaranteed accuracy.. Temperature sensor Temperature sensors for a workpiece Temperature sensor Temperature sensor Temperature sensor Workpiece Controller Temperature reader error Relationship between ambient temperature change and the resulting change in measured length TEMPERATURE ( C ) Ambient temperature 1 C/h Difference between measured length and standard length (at 20ºC) Temperature compensation ON 2 C/h air Temperature compensation OFF The lower graph shows that the difference between the length actually measured and the standard length (at 20ºC) due to a changing ambient temperature is practically eliminated (no measurement error) if the temperature compensation function is used time (hour) 5

6 A model for any application Bright-STRATO 700/900 Series Specifications Inch (Metric) Item Bright-STRATO 776 Bright-STRATO 7106 Bright-STRATO 9106 Bright-STRATO 9166 Measuring range X (705mm) (905mm) Y (705mm) (1005mm) (1605mm) Z (605mm) Resolution (0.0001mm) Maximum drive speed /s (430mm/s) Maximum drive acceleration 0.17g Work table Material Granite Size (table surface) x x x x91.34 (840x1320mm) (840x1620mm) (1040x1720mm) (1040x2320mm) Workpiece Maximum height (740mm) Maximum mass 1,102 lbs. (500kg) 1,764 lbs. (800kg) 2,644 lbs. (1200kg) Machine mass (including the stand and controller) 3,097 lbs. (1405kg) 3,605 lbs. (1635kg) 4,277 lbs. (1940kg) 6,526 lbs. (2960kg) Air supply Pressure 0.4MPa Consumption 50L/min typical (100L/min max) Main unit accuracy ISO (2001), (2003) Unit (µm) Probe used Maximum permissible Maximum permissible Maximum permissible displacement error (MPEE) probing error (MPEP) scanning probing error (MPETHP) MPP-100 (Stylus: Ø4 20mm) 1.2+3L/1000 (1.3+3L/1000)* SP25M (Stylus: Ø4 50mm) 1.2+3L/1000 (1.3+3L/1000)* TP200 (Stylus: Ø4 10mm) 1.4+3L/1000 (1.5+3L/1000)* 1.8 * Bright-STRATO 9106s/9166 Guaranteed accuracy temperature environment Temperature range 64.4 to 71.6 F (18 to 22 C) Temperature change Per hour 1.8 F (1.0K) Stylus: (Ø4 20mm) Per 24 hours 3.6 F (2.0K) Temperature gradient Vertical 1.8 F/m (1.0K/m) Stylus: (Ø4 50mm) Horizontal 1.8 F/m (1.0K/m) 6

7 Bright-STRATO Bright-STRATO 1600 Series Specifications Inch (Metric) Item Bright-STRATO Bright-STRATO Bright-STRATO [Bright-STRATO ] [Bright-STRATO ] [Bright-STRATO ] Measuring range X (1605mm) Y (2005mm) (3005mm) (4005mm) Z [59.25 ] (1205mm [1505mm]) Resolution (0.0001mm) Maximum drive speed /s (500mm/s) Maximum drive acceleration 0.13g Work table Material Granite Size (table surface) x x x (1850x3280mm) (1850x4280mm) (1850x5280mm) Workpiece Maximum height [64.96 ] (1350mm [1650mm]) Maximum mass 7,716 lbs (3500kg) 8,818 lbs (4000kg) 9,921 lbs (4500kg) Machine mass (including the stand and controller) 20,943 lbs [21,164 lbs] 30,864 lbs [30,974 lbs] 55,115 lbs [55,225 lbs] (9500kg [9600kg]) (14000kg [14050kg]) (25000kg [25050kg]) Air supply Pressure 0.4MPa Consumption 150L/min typical (200L/min max) Main unit accuracy ISO (2001), (2003) Unit (µm) Used probe Maximum permissible Maximum permissible Maximum permissible displacement error (MPEE) probing error (MPEP) scanning probing error (MPETHP) MPP-100 (Stylus: Ø4 20mm) 3.8+4L/1000 (4.8+5L/1000)* 3.0 (3.5) 3.0 (4.0) SP25M (Stylus: Ø4 50mm) 3.8+4L/1000 (4.8+5L/1000)* 2.8 (3.3) 2.8 (3.8) TP200 (Stylus: Ø4 10mm) 3.8+4L/1000 (4.8+5L/1000)* 4.0 (5.5) * Z=59.25 (1505mm) models Guaranteed accuracy temperature environment Temperature range 64.4 to 71.6 F (18 to 22 C) Temperature change Per hour 1.8 F (1.0K) Stylus: (Ø4 20mm) Per 24 hours 3.6 F (2.0K) Temperature gradient Vertical 1.8 F/m (1.0K/m) Stylus: (Ø4 50mm) Horizontal 1.8 F/m (1.0K/m) 7

8 Software packages and expansion modules to meet every requirement MCOSMOS is the MiCAT Technology modular software system for professional control, measurement and evaluation in dimensional inspection. MCOSMOS MCOSMOS 1 MCOSMOS 2 MCOSMOS 3 Software packages Expansion modules The MiCAT software suite developed by Mitutoyo puts the capabilities of a variety of powerful software packages at your fingertips. Available to suit any purpose, from basic geometry measurement to scanning complex profiles and surfaces, measurement results can be presented in a professional manner using a powerful protocol design function to give concise reports in a variety of adaptable formats. MiCAT promotes real cost-effectiveness by allowing you to purchase only the software functionality you want. MCOSMOS 1 is supplied as standard equipment with all coordinate measuring machines and you have the choice of using the product as is, upgrading with optional modules or buying extra functionality from the outset with MCOSMOS 2 or MCOSMOS 3, both of which can be upgraded to suit your needs. 8

9 Professional Software package features MCOSMOS 1 MCOSMOS 2 MCOSMOS 3 PartManager The center that manages the MCOSMOS software modules. Geometry (GEOPAK) For easy part-program generation (online/offline) and measurement of geometric components combined with flexible protocol reporting. Online/offline programming (CAT 300) Allows easy part-program generation (online/offline) supported by the use of CAD data for rapid programming and collision detection. 3D Freeform Surface Analysis (3D-TOL) Enables automatic analysis of surface form using CAD data to provide nominal/actual comparisons. 2D profile Evaluation and 3D Digitizing (SCANPAK) Combines automatic scanning of workpiece profiles and 3D surface digitizing capabilities. Support for all available probe systems, rotary/swivel heads as well as probe-change systems comes as standard (see following page). MCOSMOS expansion modules Statistical evaluation module (MeasurLink) 2D Profile evaluation module (SCANPAK) Measuring and evaluation module for involute gear profiles (GEARPAK) 3D freeform surface evaluation module (3D-TOL) Coordinate measuring instruments - standard interface module (Pure DMISPAK/I++) Airfoil evaluation module (MAFIS) NC Compensation value module (CORRECT PLUS) further modules on request 9

10 Quality and versatility: Mitutoyo measuring systems Contact measuring systems Touch-trigger probe heads for single point or multipoint measurement Dynamically measuring probe heads for single point or multipoint measurement Manual, stepless, Rotating measuring head with separate measuring probe. Rigid measuring system. Measuring head with separate measuring probe. Motorized rotating and swivelling measuring system. Measuring head with separate measuring probe. Compact measuring system. Motorized rotating and swivelling measuring system. PH1 PH6M PH10M PH10T MPP-100 SP80 PH10M TP200 TP7 PAA1 Adapter TP200 TP200 PAA1 Adapter TP7 TP200 Special measuring probes for effective thread length measurement MPP-10 SP25M SCR200 ACR1 / MRS-ACR3 / SCR200 SCR200 MRS-SCRMPP MRS-SCP80 ACR1 / FCR25 / MRS-ACR3 Probe changing systems Probe changing system overview: ACR1 SCR200 MRS- SCP80 MRS- FCR25 SCRMPP MRS- ACR3 10

11 Versatile Optical (non-contact) measuring systems Video measuring head for single point or multipoint measurement. Video measuring heads, also in combination with other measuring systems. Laser measuring systems for single point measuring, contour measuring and digitization. Laser-scan measuring heads, also in combination with other measuring systems. PH10M PH10M QVP METRIS ACR1 / MRS-ACR3 Probe changing systems 11

12 Bright-STRATO Dimensions Bright-STRATO 700 Series Inch (Metric) Y=27.76"/39.57" (705/1005) 30.79" (782) 21.26" (540) 3.94" (100) 17.24" (438) X=27.76" (705) A* A* 31.65" (804)* B** 46.30" (1176)** C Controller 55.83" (1418) 62.48" (1587) Z=23.82" (605) 7.87" (200) ** 27.56" (700) 5.51" (140) 59.49" (1511) " (2715) D " (* ) E 31.50" (800) 3.94" (100) Controller17.24"(438) 30.79"(782) PC 55.83" (1418) Main unit Air hose and connecting cables Model A 14.57" (370) 20.47" (520) B 51.97" (1320) 63.78" (1620) C 60.67" (1541) 72.48" (1841) D (min. of) " (2800) " (3100) E 60.67" (1541) 72.48" (1841) *: Support legs pitch **: Base dimension 23.62" 600) 62.48" (1587) " ( ) min. of (2800) Bright-STRATO " (15) 33.07" (840) 4.53" (115) Base cover Bright-STRATO " (15) 33.07" (840) 4.53" (115) Base cover 9 M8x M8x1.25 Y X 9.17" (233) 9.21" (234) 9.17" (233) 51.97" (1320) 9.17" (250) 9.17" (250) 9.17" (250) 63.78" (1620) 5.55" (141) 6.89" 6.89" (175) (175) 6.89" 6.89" 7.62" 6.89" (175) (175) (193.5) 6.89" (175) (175) Front 6.89" 6.89" (175) (175) Workpiece loading area Y X Front 7.62" (193.5) 9.17" (250) 5.55" (141) 12

13 Bright-STRATO Dimensions Bright-STRATO 900 Series Inch (Metric) Y=39.57"/63.19" (1005/1605) E 21.26" (540) 3.94" (100) 17.24" (438) X=35.63" (905) F** Z=23.82" (605) 5.51" (140) 27.56" (700) " (2715) A* A* B** C Controller D* 54.17" (1376)** 63.70" (1618) 70.35" (1787) G " ( ) H 31.50" (800) Controller 30.79" (782) 3.94" (100) 17.24" (438) PC 63.70" (1618) Main unit Air hose and connecting cables Model A 22.44"(570) 31.50"(800) B 67.72"(1720) 91.34"(2320) C 76.42"(1941) "(2681) D 39.53"(1004) 39.37"(1000) E 30.79" (782) 32.52"(826) F 7.87"(200) 9.84"(250) G (min. of) "(3200) "(3900) H 76.42"(1941) "(2681) *: Support legs pitch **: Base dimension 23.62" (600) 70.35" (1787) " ( ) min. of " (3000) Bright-STRATO 9106 Bright-STRATO " (15) 40.94" (1040) 4.53"(115).59" (15) 40.94" (1040) Base cover Base cover 13 M8x " (250) 9.84" (250) 9.84" (250) 67.72" (1720) 18 M8x " (191) Y X 9.84" (250) 8.86" 8.86" 8.86" 8.86" 7.62" (225) (225) (225) (225) (193.5) Front Workpiece loading area Y X 8.86" (225) 8.86" 8.86" (225) (225) Front 13

14 Bright-STRATO Dimensions Bright-STRATO 1600 Series Inch (Metric) 31.50" (800) Y=78.94"/118.31"/157.68" (2005/3005/4005) 3.94" (100) 21.06" (535) Z=49.21" [59.25"] (1250 [1505]) E J 3.94" (100) "(2732) X=63.19" (1605) D 11.22" (285) F G H 21.06" (535) Controller 31.50" (800) 32.52" (826) PC Air hose and connecting cables 32.52" A* A* (826) Controller B** 7.87" C (200) 15.83" 402) 11.81" (300) 69.29"(1760)* 90.55"(2300)** "(2732) "(2803) 9.45" (240) 23.62" 600) *: Support legs pitch **: Base dimension Bright-STRATO / Bright-STRATO / Bright-STRATO / " (2937) " (5040) 31.50" (800).79" (20) 72.83" (1850) 7.48" (190).79" (20) 72.83" (1850) 7.48" (190).79" (20) 72.83" (1850) 30-M8x M8x M8x " (3280) Workpiece loading area 11.81" (300) 11.81" (300) Y cover Y X Front 15.22" (386.5) Model [162015] [163015] [164015] A 39.37"(1000) 53.15"(1350) 64.96"(1650) B "(3280) "(4280) "(5280) C "(3685) "(4685) "(5685) D 25.59"(650) 27.56"(700) 27.56"(700) E "(4340) "(4390) "(4490) [194.49"(4940)] [196.46"(4990)] [200.39"(5090)] F "(5985) "(6985) "(7985) G "(3685) "(4685) "(5685) H 78.74"(2000) "(2700) "93300) J 33.07"(840) 38.98"(990) 46.85" (1190) *: Support legs pitch **: Base dimension Y cover Y X Front 15.22" (386.5) " (4280) Y cover X Y Front 14

15 Bright-STRATO Bright-STRATO x x59.25 (3005x5005x1505mm) Bright-STRATO 2000/3000 series One of the largest moving-bridge type CNC CMMs in the world Item Bright-STRATO Bright-STRATO Bright-STRATO Bright-STRATO Measuring range X (2005mm) (2005mm) (2005mm) (3005mm) Y (3005mm) (4005mm) (5005mm) (5005mm) Z (1505mm) (1505mm) (1505mm) (1505mm) *Accuracy MPEE 4.8+5L/1000µm 5.5+5L/1000µm *ISO :

16 Specifications are subject to change without notice. Note: All our product details, in particular the illustrations, drawings, dimensional and performance details and other technical specifications contained in this publication are to be considered to be approximate average values. To this extent, we reserve the right to make changes in design, technical data, dimensions and weight. Our specified standards, similar technical rules and technical specifications, descriptions and illustrations of the products are correct at the time of printing. The current version of our general terms and conditions also apply. Only offers which we have submitted can considered to be definitive Mitutoyo America Corporation, Aurora IL We reserve the right to change specifications and prices without notice Printed in USA July 2005