TOOL OFFSET vs. CHANGE THE PROGRAM??

[rjoyner]

Which is better? And why?

[CNCme]

Good Day,

 

Well If you dont touch your tool off correctly,

changing the nominal numbers in the program

will realy kill your trouble-shooting ability

 

DONT change the Program...re-touch your tools

 

 

PATRIOTS ...BABY

 

 

Tony G

Almost Employed Senior Programmer

N.E Massachusetts - Southern New Hampshire

_________________________________________

End mills and tooling are like The "AMMO"

And coolant and chips are like the enemy

Under your boots as you advance in the

Manufacturing Battle

--------------------------------------------------

[CNCme]

Good Day,

 

Sorry 'Bout the re post, but I was thinkin...

 

Why dont we throw Mastercam away, write

programs so all our tool offsets can be

set to zero....you would never have to

touch tools off ever again...(not)

 

AGAIN, dont change the program, touch the tool

CORRECTLY....!!!

 

 

PATRIOTS ...BABY

 

 

Tony G

Almost Employed Senior Programmer

N.E Massachusetts - Southern New Hampshire

_________________________________________

End mills and tooling are like The "AMMO"

And coolant and chips are like the enemy

Under your boots as you advance in the

Manufacturing Battle

--------------------------------------------------

[Rekd™]

Tony, there was a time before fixture offsets, tool or work. Imagine having to guage the length of the tools and program to that tool...

 

'Rekd

[CNCme]

Good Day,

 

I did it too...but I comb thruogh programs

every day where "people", without knoledge,

changed nominal blue printed program dims

to repair parts only to find out that if

you do make an offset change, it throws

everything out of wack...then try to find

the error.

 

This is almost the 22nd Century

( it feels like ) Let Technology do most

of the work!!!

 

AGAIN, dont change the program, touch the tool

CORRECTLY....!!!

 

 

PATRIOTS ...BAABY

 

 

Tony G

Almost Employed Senior Programmer

N.E Massachusetts - Southern New Hampshire

_________________________________________

End mills and tooling are like The "AMMO"

And coolant and chips are like the enemy

Under your boots as you advance in the

Manufacturing Battle

--------------------------------------------------

[chris m]

With spot drills and chamfer tools I always program the tool up about .020 because of the inconsistency of these tools. I also tell my guys to offset these types of tools up .010 when they set up and dial it in with the TLO.

 

There is no excuse for junking a $1,000 part with a giant csink because your spot drill has a big a$$ flat on the tip

 

With turning operations I will often need to use Kentucky windage in the program to get mutliple diameters to follow size together.

 

Programming the 'right' numbers doesn't always give you what you want.

 

C

[Guest CNC Apps Guy 1]

quote:

---

AGAIN, dont change the program, touch the tool CORRECTLY....!!!

---

+1

 

You can only compensate for stupidity so far. Besides, youcan try to make something idiot proof but the world keeps making bigger idiots.

[Fig sign]

I am a lazy man .

It means I hate to create problems and after that work hard to solve them .

I like to work bullet-proof .

That means I always have my tools offseted as it must be and programs to the real values .

Most of time I make one part.

You scrap they shoot you right on the working place .

 

Teh lazy.

[Roger Peterson]

maybe he is talking about diameter offset...

 

rjoyner could you please clarify.

[Fig sign]

4 such things cutter compensation in control or wear exist !

[Diablo God]

Being you program for theoretical perfect numbers, You should check your tooling before changing a program.

 

I had to fire a " top notch programmer / machinist" last october. Seems he was changing his programs to cover up his failed fixture. Making the matters worse, instead of fixing something that was broken and determined to give future problems.

 

I found out after I reprogrammed his job for him. Since it was production, And I figured he did not have alot of production cutting experience. I noticed him on the new program file, changing locations of parts in the computer. I asked him wtf he was doing? He told me my program was bad and the blends where off.

 

I asked him how they can be off if we cut into our fixtures fitted pockets to do second op work to the parts. I said those parts in the computer should be dead nuts, if anything change the wear comp if the tool radius was different size. So i looked at the fixture. And noticed the radius was cutting heavy on the outside of the parts with a uniforce mitee bite clamp in the center. Then it all clicked he left no material to help hold back the force of the clamps. And the parts were moving outwards by the clamp force.

 

 

So to make my point if I changed the program to chase the parts around, we still would have to be changing the program, since the parts were going to move different amounts depending on who was clamping the fixtures for that day.

 

Leaving good programs in tact, can sometimes find flaws in your fixtures.

[Avs_Fan]

Hi All,

quote:

---

With turning operations I will often need to use Kentucky windage in the program to get mutliple diameters to follow size together.

---

When we have problems with multiple diameters we usually find that the tool is off-center.

 

Kentucky windage? Is that like "finagling"?