Doug, The manual that came with the HAAS says for live 5 axis machining to have setting 85 no less than .050 the default was .025. If I still have the jerky movement after setting the dia for the 4th and 5th axis to 9.000, I will try turning setting 85 down to a lower value. I will keep you posted. Ed

From cnc magazine. quote: cnc magazine Dear Applications, I have a ’97 model VF-3 vertical machining center with the fourth-axis option and an HRT 310 rotary table. Up until now I have only used the rotary table for indexing operations on simple parts. I recently bid on a job that will require full four-axis motion. My CAD/CAM system will support both feed-per-minute and inverse-time-feed modes but I am not familiar with inverse-time feed. Should I use inverse-time feed on full fourth-axis parts? What exactly is inverse-time-feed mode? Sincerely, Mark Curry Dear Mark, Inverse-time feed is not as complicated as it sounds. Inverse-time-feed rates simply dictate the amount of time a particular stroke will take to complete. To calculate the time for a stroke, divide the inverse-time-feed rate into 60. For example, an inverse-time-feed rate of F1000 dictates that the commanded motion of that line will take 0.06 seconds. This method of feed-rate command allows for more precise control of the feed rate when combining rotary and linear axes. With the Haas control you have the option of running in either inverse-time-feed mode or feed-per-minute. The Haas control can convert linear-feed-per-minute rates to approximated angular-feed-rates based on the user-definable part diameter stored in the 4th- and/or 5th-axis diameter setting(s). This feature allows the user to program a combination of linear and rotary axis motions in feed-per-minute mode, but the rotary feed rate will only be exactly correct at the diameter set by the user. Therefore, inverse-time feed is preferred when mixing linear and rotary axes because it is not a linear-feed-rate command, but rather a time-based feed command. Sincerely, Haas Applications I will change this setting in the control on Monday. I know it is set to the default of 1.0000, the part is no less than 9. Let’s see if this fixes the max inverse feed of F1000. from running slow. Ed

Hi all, thanks for the replies. We have the VF-4SS with the TR160. It has the HSM turned on, Machine control setting 85 is at .050, and I think it is setting 191 to smooth. I changed the control def. to 3 axis to unit and the rest to inverse. Now the max feed rate is F1000. inverse and it seems really slow. I have a email into in-house telling them of the max feed rates of A,B are 80. DPS. X,Y,Z are 833 IPM and the rapids 1400 IPM on the XYZ, I think we are close to getting it ironed out. Here are a few of the specs. 30 hp 12000 rpm direct drive spindle. 1.2 second tool changer. HSM programmable coolant nozzle. Auto air blast. 300 psi thru the spindle coolant, cutting mostly composites so no need for the 1000 psi. Glass scales on XYZ. TR160 4th and 5th axis 1400 IPM rapids, 833 ipm cutting. Auto doors. coolant filter. chip auger. high intensity lighting. 16 MB of memory. USB port. Ed

As far as Toyota Making a better car Than US or any foren car for that matter, I have not seen one yet that can touch my 03 Mustang Mach 1!

Thanks for the Fadal Help guys! lol Ed

Yes the baud rate is 9600 max. And yes the machine gets really jumpy in 3d contours where X,Y,Z,A,B are moving at once (Swarf tool paths)I tried filtering the tool path but it came back from DA .010 O.O.T. Quote: -------------------------------------------------------------------------------- Doesn't this procedure require a freshly signed PO, a forklift and a dumpster? -------------------------------------------------------------------------------- Yes As I stated in my first post Jim@Gentex got the freshly signed PO, (Deckel Maho 5 Axis CNC) I know I'm beating a dead horse with these machines but when your told make sh!t shine you have to at least put on the rubber gloves a face mask and give it a go. Thanks guys!

The post puts the G8 in the program. I also thought it was the buffer. I guess I'll have to start looking for a buffer upgrade. thanks Ed

I have some questions about MCX,Cimco DNC Max4, and My two Fadals. Here is what I have 2 Fadal 4020 VMC’s Cimco DNC max 4 (one five axis one 3 axis) both with the Fadal C.N.C 88 control which I received after Jim@Gentex Received his brand spanking new Deckel Maho 5 Axis CNC (lucky dog) . Here is my question, When using DNC (which I use a lot because of large programs) I cannot program the feed more than 20. IPM if I go above that feed rate I get very choppy motion in the machine and data compression in the control is evident (two lines of code scroll instead of hole page) Jim had the same problem when he had the fadals but really never needed to fix it because he wasn’t doing much production just R&D stuff, Now that I have them they want production and want everything yesterday. The max baud rate on the machine is 9600. Does any one know if there is a fix for this ? Thanks Ed