MECAmaster For CATIA V 5 Luca Gentini ENMME
- Slides: 16
MECAmaster For CATIA V 5 Luca Gentini (EN/MME) 03. 2016 Luca Gentini– EN-MME 1
§ § § 03. 2016 What is MECAmaster? How MECAmaster works Practice example MECAmaster at CERN Conclusions Luca Gentini– EN-MME 2
§ § § 03. 2016 3 D Tolerances : Analyse and Optimise assembly architecture, process and tolerances and then master its design at lower cost. 3 D Loads : Analyse with a modelisation and calculation the propagation of static loads in an assembly. Hyperstatism : Identify the overconstraints or mobilities in an assembly and solve them. Luca Gentini– EN-MME 3
… … … Assembly architecture, process Geometrical quality and tolerances Action on the component Action on the assembly During the preliminary design, decrease the 3 D effects optimizing : • Components interfaces (Position / Type) • Assembly process (Assembly procedures / mockup … ) 03. 2016 During the detailed design • Functional definition of tolerances • Specifications Luca Gentini– EN-MME 4
O IT X, Y, Z IT= IT A 2 + IT B 2 + minor shape error [IT A 2 ; IT B 1] INTERFACE 03. 2016 Luca Gentini– EN-MME 5
X, Y, Z O IT ? ? Luca Gentini– EN-MME 6
Point 1 ITx; ITy, ITz Plane 1 X, Y, Z ITx; ITy Point 2 ITx; ITy, ITz 03. 2016 Luca Gentini– EN-MME 7
03. 2016 Luca Gentini– EN-MME 8
Put the constraints between each pieces to fix the 6 degrees of freedom Edit the constraints inserting the drawing tolerance values 03. 2016 Luca Gentini– EN-MME 9
• MECAmaster works simultaneously with CATIA. • One just needs to open it when the CATIA Product is already opened. The MECAmaster’s toolbar appears in front of CATIA. • We cannot work on several products at the same time. 03. 2016 Luca Gentini– EN-MME 10
When we open MECAmaster, it generates simultaneously a new MECAmaster product. Each MECAmaster constraint is considered as a CATIA shape. At each constraint modification (for example a value modification) MECAmaster generates a new CATIA shape which must be saved. 03. 2016 Luca Gentini– EN-MME 11
CAT Product ST 000001_01 Analysis assembly CAT Product ST 000002_01 CATIA Assembly CAT Product ST 000003_01 CAT Part ST 000004_01 CAT Part ST 000005_01 CAT Part ST 000006_01 CAT Product ST 000001_02 MECAmaster Assembly CAT Others ST 000001_03 CAT Others ST 000001_04 Preconized SMARTEAM structure • Analysis assembly and MECAmaster assembly should have the same Item. • It would be nice if the CATIA shapes also have the same Item of the analysis assembly. CAT Others ST 000001_05 03. 2016 Luca Gentini– EN-MME 12
03. 2016 Luca Gentini– EN-MME 13
CERN IS CURRENTLY EVALUATING MECAmaster Training: 3 days training for “specimen” people has been done (4 x designers, 2 x engineers, 1 x Gr. ACQ member). Working stations: We can install MECAmaster on all computers, but we have just ONE license on a USB key. People working on: A new fellow works on MECAmaster at 50% wt. He will work on pilot jobs to evaluate the program. Support: Currently, there is not a MECAmaster support at CERN. Our support takes care only about problems related to SMARTEAM and program installation. 03. 2016 Luca Gentini– EN-MME 14
- Make a whole MECAmaster assembly of complex systems takes a lot of time. - Difficult to create constraints which simulate the reality. It does not manage the hyperstaticity. - The results must be carefully interpreted. They are not valid for qualification. + Very good for series productions. Quality manufacturing class, statistics, feasibility, etc. + Very good to evaluate and improve the design. + Only program at CERN to do this kind of calculation! 03. 2016 Luca Gentini– EN-MME 15
Key people USB licence responsible Marta Garcia Carnero 112 03 -008 161377 Fellow Riccardo Peron 376 01 -001 Fellow supervisor Federico Carra Diego Perini 376 01 -012 167465 112 02 -013 163284 Gr. ACQ reference member Philippe Trilhe 112 02 -003 163957 Thanks for you attention 03. 2016 Luca Gentini– EN-MME 16
