Messages

2041

General Mach Discussion / Re: Opto switches behaving badly

« on: January 19, 2010, 06:19:43 PM »

Good Dan, hopefuly your all set. Simpsons solution may be the most robust though. If setting debouce helps your problem it will tell us it is most likely noise. I should have explained it a little better. Debouce increases the time a signal state change has to be seen to be considered changed. For troubleshootiing you can set the debounce pretty high but if you have to set it very high to make the switches stable I would prefer resistors like simpson said. Other things to consider are wire routing and shielding.

Brett

2042

General Mach Discussion / Re: Anyone Here Have Experience Milling 6061-T651 Wrought Plate?

« on: January 19, 2010, 06:05:59 PM »

Only experience can give you results like that. Your good Bill. 

Brett

2043

General Mach Discussion / Re: Opto switches behaving badly

« on: January 19, 2010, 01:27:38 AM »

Dan, I'm thinking it may be noise. Do you have any debounce set in General config.? I'm a little confused about your post. If it does a homeing routine does the leds stay on after they should have moved off? If you jog away from the switches do the LEDs go out once you clear them? If your BOB is opticaly isolated and the switches that can cause a problem. Dual optical isolation isn't a good thing.

Brett

2044

General Mach Discussion / Re: recommended feed/plunge speeds

« on: January 19, 2010, 01:17:16 AM »

Barry, I have never seen a chart or formula for cutting wood. The best advise I ever heard was to increase the feedrate in small steps until it breaks a bit then back off 10% for max. tool life. It will cost you a few tools to get a feel using this method but it's the best I know of for wood. I have seen bits run for a very long time useing this. If you running woodbase materials with a lot of resin you deffinatley want Carbide. MDF will ruin HSS quick as a wink. You can also get downcut spiral that helps keeps the material from lifting off the table. Also combination up-cut and down-cut in the same cutter. Those are great for materials where edge chipping is a problem like Melamine. Melamine is usualy partical board with a thin laminate on both sides. There are links in the links section for some good suppliers.

Brett

2045

Mach Screens / Re: List of "Intelligent" or System Labels.

« on: January 17, 2010, 03:07:17 PM »

Gerry, do you have Mach Mad? I can't remember for sure but think it had a drop down with all the current ones listed.

Brett

2046

General Mach Discussion / Re: Anyone Here Have Experience Milling 6061-T651 Wrought Plate?

« on: January 17, 2010, 02:03:36 AM »

Hey Ray, I get 4584 RPM for the 1/2 HSS 3 flute at 41.26 IPM.

See if this link helps you any.

http://precisionchaos1.com/support.htm

Brett

2047

Show"N"Tell ( Your Machines) / Re: My CNC pressbrake build

« on: January 17, 2010, 01:54:14 AM »

Nice, very nice. Looking forward to the videos of it in action.

Brett

2048

General Mach Discussion / Re: Anyone Here Have Experience Milling 6061-T651 Wrought Plate?

« on: January 17, 2010, 01:43:50 AM »

Ray, I've used 2 flute Carbide with flood coolant and gotten pretty good results. Coated carbide does a little better. Can't remember using an HSS. What kind of feeds and speeds are you running? Cutter type, diam. and number of flutes? Make sure nothing is vibrating.

Brett 

2049

Show"N"Tell ( Your Machines) / Re: My CNC pressbrake build

« on: January 15, 2010, 11:07:06 PM »

They look good. Parker cylinders are top shelf and evidently they are pretty good to work for as well. 

Brett

2050

General Mach Discussion / Re: What is a "MODERATOR"?

« on: January 15, 2010, 06:14:41 PM »

 

Brett