Jurgen, first check the following: * Under Help, open Technical Support Info. Here you will find lots of information about the installation, including installed modules, floating licenses, date codes and builds. Under Configured Option Modules heading, check to see if you have Mechanism_Design, Mechanism_Dynamics and/or Design_Animation (also possibly Mechanica which you don't actually need for what you want to do, as the first two options are 'junior' Mechanica Motion). If you do not have Mechanism_Design, you'll have to try something more primitive, but it is still possible to do. * Assuming you have MDX, open your assembly of the cylinder and piston. With the assembly of the piston and cylinder open, redefine the cylinder to get the Component Placement interface. You should have placed the cylinder as the base component using the Default placement. At the bottom of the window is an icon for this. Redefine the component placement now if it wasn't placed this way. Also, notice above the familiar constraints window a heading called Connections with an arrowhead pointing right. Click on this arrowhead and the mechanism setup part of assembly opens to show the implicit connection of your Default placement which is a Rigid connection. This is the part which remains stationary. Part of what confuses most people about Mechanisms is that you can't do the assembly and make the connections in 'Applications>Mechanism' (or Mechanica, for that matter). You need to do this with Connections from the Component Placement window. * Now, redefine or place the piston in the assembly. If there are any hard constraints which will prevent the piston form moving, i.e. any constraint which would lock it in a fixed position along the length of the cylinder, remove the constraint. Next, open the Connections setup window. Notice that it gives you a default type of connection as Pin. Click on the Pin type to highlight it and open the drop down list with the arrow. Each of these connection types has different motion attributes (DOF, degrees of freedom; for a description of each what to use them for, check the Help files under 'connections'.) In the case of the piston, you should probably use 'Slider' as the connection type. It provides an axial connection between cylinder and piston and a rotational constraint (plane to plane). * When the connection definition is complete, a message the bottom so indicates. Click OK to close the Component Placement dialogue. You are not ready to start Mechanism from the Applications menu. What remains to be done from this menu is to give a connection or connections drivers, define the motion this driver will create, including such things as speed or limits of motion, then run an analysis which simulates the parts being driven by your 'motor'. When the analysis has been run with no 'crashes' and performs to your satisfaction, you can do a playback of the analysis, save it to disk with the drivers and motion definition and capture the cycle as an mpeg. There is a PTC course available on MDX and it's pretty comprehensive and detailed, much more so than this simplified introduction can convey.
David Janes
"Jurgen" wrote in message news: snipped-for-privacy@posting.google.com... : I've been trying to get this to work for days. Basically, I have a : piston (disc shape) and a cylinder (tube shaped). Both are just : 1-feature parts- the piston is just a 10cm. diameter circle protruded : 5cm., and the cylinder is just a sketch of 2 concentric circles to get : the hollow shape, with the inner cicle having a diameter of 10cm. and : the outer circle having a diameter of 12cm, protruded 30 cm. : : All I want to do is show the piston move to the end and back of the : cylinder. I'm sure someone out there knows how to do it- I am using : Pro/E 2001. Would someone be so kind as to provide a step-by-step : guide of how to do it? Keep in mind that this is my first time trying : to do the "motion" thing- I am very good at regular Pro/E, but know : nothing about "motion". : : Thanks in advance! : : Jurgen