Engine Code Help-45degree cut (YZ & XZ)

[GTmike400]

I am definately doing this the hardway since I havent sat down to figure out MasterCAM yet and Im not sure if it is capable of doing what I need, so Im writing it all my hand. What am I writing? Im writing a code for a 1/12 Scale V8 (502 Chevy). All 13+ sides, 4 programs per side, all by hand just for the engine block; nothing else.. Yeah, its a pain, but I cant really sit down and learn MasterCAM right now and afford breaking tools by learning how the hell to use it.

So, I need to know if how to make cut where the X and Z axis move at the same time. Such as, a line parallel to the X axis going up at a 45.

Any help would be much appreciated. Or any suggestions on how to mill the engine.

[psychomill]

WOW! Handcoding an engine block.... That's some work. Are you going to cut to detail? internals and everything?

Anyway, most machines just use coding something like this:

G1X1.566Z1.492F100.

You just have to calculate for the angles, start and stop points, with or without comp.

What machine are you doing this on?

[GTmike400]

Thanks. All the internals will be cut, but seperately. The engine block will have all the spots for the interals so its a bit more challenging.

I thought the code would be something like that, but NCPlot didnt show it so I thought I'd ask. Calculating the angles is easy since I am doing all the drawings in AutoCAD, its basically a quesiton of "How do I cut on multiple axes?".

I'm doing this on a Sherline mill equipped by Denford for the CNC stuff with a Fanuc controller.

[rweatherly]

I am a novice at this, but wouldn't somthing like:

G00 X0 Y0 Z0
G01 X10 Z10

accomplish what you want?

[NC Cams]

Consider fixtures for doing the deck and bore machining.

A scaled down version of "block-tru" as sold by BHJ Products (they do have a website) for "real" Chevies might be of assistance.

In fact , they have a number of fixtures which could be helpful in machining your project.