AfM - Accuracy for Machines
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1 Praxisbericht / Case Study / Gantry type AfM - Accuracy for Machines Page 1
2 Volumetric Compensation Volumetrische Vermessung und Kompensation einer Gantry Fräsmaschine mit FIDIA CNC C20 und Option VAC Volumetric Calibration and Compensation of a gantry type machine tool with FIDIA CNC C20 and option VAC Verbesserung der volumetrischen Genauigkeit um: 92% 359µm Improvement of volumetric accuracy by: 92% 359µm Page 2
3 Zeitplan / Schedule Montag Monday Anreise / journey there Aufbau LaserTRACER / setup of the LaserTRACER system in the machine tool Installation der volumetrischen Korrekturoption durch den Steuerungshersteller / Installation of the Volumetric Compensation Option by the control manufacturer Erstellung / Anpassung der Messstrategie an das Maschinenvolumen und die Gegebenheiten vor Ort / Creation and modification of the measurement strategy Temperaturmesssystem an Maschinenmaßstäben installieren / setup of the temperature measuring system Dienstag Tuesday Mittwoch Wednesday Donnerstag Thursday Kalibriermessung der Maschine / Calibration measurement of the machine tool Auswertung der volumetrischen Abweichung / Evaluation of the volumetric deviation Erstellung des Korrekturfiles / Creation of the compensation file for the CNC Control Verifizierungsmessung des kompensierten Volumens / Verification measurement of the compensated machine tool Auswertung der volumetrischen Restabweichung / Evaluation of the remaining volumetric deviation Dokumentation / Documentation Abreise / Return trip Page 3
4 Maschine / Machine tool Kompensationsvolumen / Compensated workspace: 15m³ X-Achse / X-Axis: 5000mm Y-Achse / Y-Axis: 2500mm Z-Achse / Z-Axis: 1200mm Maschine ohne Temperaturkompensation Machine without temperature compensation Page 4
5 Ergebnisse / Results Verification of VolumetricAxisCalibration on 5 axis machine tool 400,0 300,0 200,0 100,0 0,0-100,0-200,0 Without VolumetricAxisCalibration With VolumetricAxisCalibration Page 5
6 Ergebnisse / Results Parameter position deviation [µm] straightness deviation [µm] rotational deviation [µrad] orthogonality [µrad] spatial deviation (Simulation) Without With U (max) Improvement VolumetricAxisCalibration VolumetricAxisCalibration Tracer absolut percentage xtx / EXX 77,4 18,6 0,8-58,9-76% yty / EYY 53,6 9,6 0,8-44,0-82% ztz / EZZ 59,9 6,8 0,8-53,1-89% xty / EYX 52,3 7,1 1,0-45,3-87% xtz / EZX 80,4 7,3 1,2-73,0-91% ytx / EXY 52,7 7,0 0,3-45,7-87% ytz / EZY 43,0 4,0 0,9-39,0-91% ztx / EXZ 16,9 2,9 0,4-14,0-83% zty / EYZ 132,4 3,5 0,3-128,9-97% xrx / EAX 153,6 5,2 0,7-148,4-97% xry / EBX 88,3 5,5 0,5-82,7-94% xrz / ECX 28,0 2,4 0,4-25,6-91% yrx / EAY 69,5 7,2 0,6-62,3-90% yry / EBY 100,7 6,6 0,3-94,1-93% yrz / ECY 83,3 28,5 1,3-54,8-66% zrx / EAZ 123,4 6,3 1,0-117,0-95% zry / EBZ 44,2 5,8 1,1-38,4-87% zrz / ECZ 30,8 7,3 1,2-23,6-76% xwy / COY -52,5 1,7 0,3-50,8-97% xwz / BOZ -120,9 7,3 0,5-113,6-94% ywz / AOZ -30,1 1,5 0,4-28,6-95% L mea 180,0 40,0 2,0-140,0-78% 1D sim 180,0 33,0 2,0-147,0-82% 3D sim 389,0 30,0 2,0-359,0-92% Page 6
7 Positionsabweichungen / Position deviations 0,070 0,060 0,050 0,040 0,030 0,020 0,010 0,000-0,010-0,020-0,030-0,040-0,050-0,060 0,040 0,030 0,020 0,010 0,000-0,010-0,020-0,030-0,040-0,050-0,060 xtx xtx with VAC ztz ztz with VAC 0,060 0,050 0,040 0,030 0,020 0,010 0,000-0,010-0,020-0,030-0,040 Abweichungen bezogen auf 20 C Deviations related to 20 C yty yty with VAC Page 7
8 Geradheitsabweichungen / Straightness dev. X-Achse / x-axis 0,040 0,020 0,000-0,020-0,040 0,040 0,020 0,000-0,020-0,040-0,060-0,080 xty xty with VAC xtz xtz with VAC Page 8
9 Geradheitsabweichungen / Straightness dev. Y-Achse / y-axis 0,040 0,020 0,000-0,020-0,040 0,040 0,020 0,000-0,020-0,040-0,060-0,080 ytx ytx with VAC ytz ytz with VAC Page 9
10 Geradheitsabweichungen / Straightness dev. Z-Achse / Z-axis 0,040 0,020 0,000-0,020-0,040 ztx ztx with VAC 0,060 0,040 0,020 0,000-0,020-0,040-0,060-0,080-0,100 zty zty with VAC Page 10
11 Rotationsabweichungen / Rotational deviation 0, , , , , , , , , , , , , , , , , , xrx xrx with VAC xrz xrz with VAC 0, , , , , , X-Achse / x-axis -0, xry xry with VAC Page 11
12 Rotationsabweichungen / Rotational deviation 0, , , , , , , , , , , , , , , , , yrx yrx with VAC yrz yrz with VAC 0, , , , , Y-Achse / y-axis -0, , yry yry with VAC Page 12
13 Rotationsabweichungen / Rotational deviation 0, , , , , , , , , , , , , , zrx zrx with VAC zrz zrz with VAC 0, , , , , Z-Achse / z-axis -0, , zry zry with VAC Page 13
14 Rechtwinkligkeiten / Orthogonality 1, deviation xwy 1, deviation ywz xwy without VAC xwy with VAC ywz ohnevac ywz mit VAC 0, , , , deviation xwz xwz without VAC xwz with VAC Definition Vorzeichen: Positiver Winkel ist größer 90 Definition of sign: Positive angle is greater than 90 Page 14
15 1D Abweichung / 1D deviation without Volumetric Compensation maximum 180 µm deviation 1D deviation: The maximum deviation of measuring lines along the axes, in all planes and spatial diagonals of the machine tool with Volumetric Compensation maximum 33 µm deviation 1D Abweichung: Es wurden die Abweichungen entlang achsparalleler Geraden, in allen Ebenen- und Raumdiagonalen berechnet. Page 15
16 3D Abweichung / 3D volumetric deviation without Volumetric Compensation maximum 389 µm deviation 3D deviation: The maximum volumetric deviation in the whole workspace of the machine tool with Volumetric Compensation maximum 31 µm deviation 3D Abweichung: Es wurde die maximale volumetrische Abweichung im gesamten Arbeitsraum berechnet Page 16
17 volumetrisches Umkehrspiel / volumetric backlash Position 1 0,0150 0,0100 0,0050 0,0000-0,0050-0,0100-0,0150 3D backlash and drift [mm] Xq - 3s [mm] Xq [mm] Xq + 3s [mm] thermal drift 0,0150 0,0100 0,0050 0,0000-0,0050-0,0100-0,0150 Position 3 Position 2 0,0150 0,0100 0,0050 0,0000-0,0050-0,0100-0,0150 3D backlash and drift [mm] Xq - 3s [mm] Xq [mm] Xq + 3s [mm] thermal drift 0,0150 0,0100 0,0050 0,0000-0,0050-0,0100-0,0150 Position 4 3D backlash and drift [mm] Xq - 3s [mm] 3D backlash and drift [mm] Xq - 3s [mm] Xq [mm] Xq + 3s [mm] Xq [mm] Xq + 3s [mm] thermal drift thermal drift Page 17
18 volumetrisches Umkehrspiel / volumetric backlash 0,0150 0,0100 0,0050 0,0000-0,0050-0,0100-0,0150 Position 5 0,0150 0,0100 0,0050 0,0000-0,0050-0,0100-0,0150 Position 6 0,0150 0,0100 0,0050 0,0000-0,0050-0,0100-0,0150 3D backlash and drift [mm] Xq - 3s [mm] Xq [mm] Xq + 3s [mm] thermal drift Position 7 3D backlash and drift [mm] Xq [mm] thermal drift Xq - 3s [mm] Xq + 3s [mm] 3D backlash and drift [mm] Xq [mm] thermal drift Xq - 3s [mm] Xq + 3s [mm] Page 18
19 Temperatur Bedingungen / Temperature conditions Calibration Measurement Position Actual Nominal Date Start time End time Duration tp [s] Start temp. End temp. Temp. diff. Gradient [ C/h] Average :47:21 10:18:00 0:30:39 2,91 22,319 22,370 0,051 0,100 22, :40:55 13:11:03 0:30:08 2,88 22,691 22,810 0,119 0,237 22, :04:08 14:34:47 0:30:39 2,93 23,148 23,120-0,028-0,055 23, :00:44 15:31:28 0:30:44 2,94 23,462 23,260-0,201-0,393 23, :03:51 17:35:06 0:31:15 2,85 23,604 23,570-0,034-0,065 23, :44:19 18:03:33 0:19:14 2,68 23,444 23,500 0,056 0,174 23, :14:31 18:33:34 0:19:03 2,65 23,507 23,480-0,027-0,086 23,494 Verification Measurement Position Actual Nominal Date Start time End time Duration tp [s] Start temp. End temp. Temp. diff. Gradient [ C/h] Average :25:03 10:45:12 0:20:09 2,81 20,414 21,370 0,956 2,847 20, :51:21 11:12:17 0:20:56 2,91 21,981 22,590 0,609 1,746 22, :17:32 11:51:23 0:33:51 3,08 22,562 22,620 0,058 0,104 22, :02:57 12:35:47 0:32:50 3,12 22,750 22,930 0,180 0,328 22, :02:39 13:34:54 0:32:15 3,09 23,201 23,390 0,189 0,352 23, :56:00 14:27:47 0:31:47 3,04 23,415 23,500 0,085 0,161 23, :24:35 15:57:35 0:33:00 3,16 23,785 23,780-0,005-0,009 23,783 Measuring schedule Duration [hh:mm:ss] Calibration Verification measurement time 3:11:42 3:24:48 setup time 5:34:31 2:07:44 total time 8:46:13 5:32:32 Page 19
20 16:47:00 17:39:00 18:31:00 19:23:00 20:15:00 21:07:00 21:59:00 22:51:00 23:43:00 00:35:00 01:27:00 02:19:00 03:11:00 04:03:00 04:55:00 05:47:00 06:39:00 07:31:00 08:23:00 09:15:00 10:07:00 10:59:00 11:51:00 12:43:00 13:35:00 14:27:00 15:19:00 16:11:00 17:03:00 17:55:00 18:47:00 19:39:00 20:31:00 21:23:00 22:15:00 23:07:00 23:59:00 00:51:00 01:43:00 02:35:00 03:27:00 04:19:00 05:11:00 06:03:00 06:55:00 07:47:00 08:39:00 09:31:00 10:23:00 11:15:00 12:07:00 12:59:00 13:51:00 14:43:00 15:35:00 16:27:00 28 Temperatur Bedingungen / Temperature conditions 27 Calibration Verification 26 Z- Achse 25 Y- Achse 24 X- Achse 23 Page 20
21 Thank you for your attention Vielen Dank für Ihre Aufmerksamkeit AfM Technology GmbH Gartenstraße Aalen Fon: +49 (0) Fax: +49 (0) Page 21
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