Lathe - Mplfan post problem

[nickz]

When using C-axis Face Contour, my output has a feedrate appended to every single X,C move, and the feedrates are all different. If there is anyone familiar with the Mplfan post, is there a variable/switch for this situation? I checked everywhere, nothing. Mastercam/Lathe V8.1, Thanks.

[ 08-14-2001: Message edited by: nickz ]

[Guest CNC Apps Guy 1]

Nick,

It is posting correctly. Sure it does not look like a program written manually but feedrates neeed to change as you come closer to center to keep the same feedrate. Think of it as CSS. If you don't want that, you'll have to go into the post and delete a few things. This is best done by contacting your local Mastercam Reseller. That's what they are there for.

[Reece L Gibson]

Are we using Polar coordinate or Y axis Motion?

It is feed per degree, of feed per min.

What control?

[nickz]

The machine does not have a Y-axis, only X,Z, and C with live tooling. We are using FPM (Metric, MM) and the machine is a Hitachi Seiki HT25R with a Seiki-Seicos LIII controller.

The operation that is giving me a hard time is a C-axis Face Contour. I am engraving a part number on the face of the part. It works well but I have to edit the G-code (strip out all the excess feedrates, different start-up G-codes, and include other G/M codes) because its the only post that comes even close to what the controller and operator expect. I have tried with several different places (CNC, my reseller, etc.) looking for a post processor for this controller, doesn't exist, its just a very obscure machine.

[Reece L Gibson]

Are you talking about G121,G17,M43,G50H0,G30U0W0 etc.start up codes in your program? If so I have a Post for You, We have a Hitachi Hicell II here at the school. It has a Y axis,but I use Polar alot. Let me Know and I will send you a copy

Reece