VAP

yes, a .001"-.002" interference fit. With Acetron it'll self-lube. With Delrin it "may" squeak

CrazyCab

NCL files a.k.a. CL Data files are whats produced by all CAD/CAM packages like Pro/E. But along with a Manufacturing license (needed to produce a CL Data file) comes a copy of Austin NC Gpost Post Processor program which will convert a Pro/ENGINEER CL Data file into Post Processed G-Code which is then read in on the machine level.

I can not only model them in our 3-D solid modeling program, but can also create a helical toolpath within Pro/NC (our MFG software) which will yield me a NCL (CL Data) file which I can then Post Process through GPost into useable G-Code which can then be fed into the machine.

Austin NC's GPOST will not only translate CL Data files but is also a Program with an Advanced User Interface that can be used to configure your machine type and controller. Within the UI is a window in which custom programming can be created a.k.a FIL Language or "Factory Interface Language" which can be used to tranlate any specific line of CL Data and output any form of custom G-Code based on whatever? It a machine programming language.

Along with all this as well comes Vericut (CGTech) which is a machine simulation program. This will basically take your CL Data or G-Post Code and virtually simulate what that sequence will look like with a tool and material removal on that machine. It starts with your solid workpiece and allows you to machine (remove material) until you yield your finished part. You can then use this to see if your toolpath will cause your tool to break or the reference model to become gouged.

Its pretty complicated and highly advanced.I work with bigtime MFG companies such as Toyota and John Deere to Lockheed Martin and Raytheon.Toyota's drivetrains are all designed and manufactured using Pro/ENGINEER and Pro/NC, last time I checked they didn't call them Yoda's for nothing.

dragon-ryder

the vericut that is. I noticed while playing around with the tool path generation tools in it that you can verify the Gcode in 3D representation once you have it all programmed. Unfortunately the Hasp file is corrupted on mine so I can't post process the work i've done within the program. I have a few very complex parts I need to mill out of aluminum stock (6061), some parts lathed too.

Are there any resources that you are aware of that I could use to gain a better knowledge about programming CNC's with the proper code? I have access to just about every manufacturing machine I could ever want (CNC mills, lathes, routers, Hydrojets, laser scanners, Rapid Prototypers, etc...), but no way to ever use them because I only have the faintest knowledge of G-Code. Thanks

Jretal

I installed the bushings on monday and put them on the car yesterday.

The SS guide pins were REALLY tight in the bushings... that suppose to happen? I realized I should have pressed the bushings in with the guide pins already installed, but I was able to slip them in with a lil persuasion. I put an a$$ ton of antiseize all over the bushins inside and out, so I think I should be good coverage wise There is no visible delrin anywhere... haha.

They were a tight fit in the subframe, but with a lil playing around I got them in. Can't wait to try them out. the strut is now rock solid in place, unlike before where it would move 1/4" each direction.

Now I just need to get the brake reservoir cleaned out, flush with fresh fluid, and toss the seats in and I can test everything out... then get tires, alignment and turn the insurance on and get the puppy registered. Soooo close.

VAP

<center><img src="http://pictureposter.audiworld.com/711/ssbushing.jpg"></center><p>
The reasons are several; hole is NEVER perfectly centered within the tubing and extruded tubing is never perfectly round. Given this the solid bushing manufacturers opt for an under-size fit in all instances. This compensates for out-of-round tubing and bore eccentricity.

Thats why I ALWAYS have my tubing center-less ground before machining then bore my holes once I have a perfectly concentric O.D. to work with. Anything else is "schlock" work and Mance dont play dat ;-) Plus, you havent truly lived until you try to make a precision fixture to spin a bushing &amp; machine a helix into material that is eccentric and doesnt spin "on-axis."

Pic above is one of my precision ground/center-bored helix'd bushings compared to one of Power Flex's helix'd non-ground/non center-bored bushings. I wont tell you which is which as a "picture is worth a thousand words" and you can easily tell which looks like a piece of "pipe" and which looks like a "hydraulic rod." PowerFlex is the world's largest aftermarket bushing manufacturer and could easily have their bushings precision ground then bored on-center but due to extreme costs involved they choose to go the "cheap route." I'm more concerned with ultra-precision, long life and the "if you're gonna be a dog, why be a chihuahua" philosophy. I'm a LOT less greed-motivated/profit driven than the common bushing manufacturer. My tastes are "simple"... I "simply" want the BEST!!

Jretal

not extruded. I picked them up from billzcat. I can see the machining marks from where he center drilled the middle hole, and the OD itself isn't of an extruded dimension (.733" iirc)... and is smooth like yours (so obviously machined)

Regardless, me hammering it into place probably freed up enough space so that it will eventually twist in place lol. Not exactly the way you want to do it... but what have ya.

And I think I used nearly half a bottle of anti-seize b/n the 2 control arms... so hopefully that will do the trick squeak wise... for a bit at least.

BTW, do you think I need to put a heat shield over the pass side bushings? It's pretty close to the downpipe, and I don't want to melt anything...