What is 'pitch' when talking about cutting lasers ?

[DrSid]

What is 'pitch' when talking about cutting lasers ? I'm doing some translation, and it makes no sense.

 

[Pontiacg5]

Cutting lasers as in making a host? Pitch is the measure of threads per inch of an imperial thread, usually something like this 1/4"-20 (this is the thread of a camera tripod)

Don't confuse pitch and lead though, metric threads are different. The second number of a metric thread is the measure of the advancement of the thread per one revolution. An aixiz lens is 9mmx0.5mm, so one turn of an aixiz lens will move the lens .5mm closer or further from the diode.

Hope this clears things up a little, assuming this is the pitch you are thinking of!

 

[DrSid]

No .. it's laser cutting machine .. and they talk about pitch, or even pitches .. will provide original text later. It's some parameter of the cutting, or beam, or I don't know.

But thanks !

 

[Toke]

Could it be the angle the beam hit the material at?
It is important to get that right when electrode welding, it might matter for laser cutting too.

 

[DrSid]

That was my first idea .. and it's not clearly it.

Hey .. it was probably bad idea to ask without having the text at hand .. just wait few hours please.

Edit:

By a chance I've just got email with some of those pitches:

180 holes at 1º pitch, pattern of 10 holes, 10 spaces. Holes at 0.5º, 1.5º, 2.5º, 3.5º, 4.5º
then 15.5º - 24.5º etc. 5 shots are required per hole:

....

Note: The pattern defined by the segments specified need not add up to one revolution but rather the pattern

would repeat for as many times as necessary to encompass the total of 360o. The pattern must repeat an

even multiple of times however to define a valid pattern.

Example: A row is required with holes on a 1º pitch, according to the following pattern of holes:

Holes between 0º and 9º inclusive (10 pitches)

No holes between 10º to 99º inclusive (90 pitches)

Holes between 100º and 149º inclusive (50 pitches)

No holes between 150º and 219º inclusive (70 pitches)

Holes between 220º and 299º inclusive (80 pitches)

No holes between 300º and 349º inclusive (50 pitches)

Holes between 350º and 359º inclusive (10 pitches)

The pattern must be defined starting with a segment of spaces; the first defined segment

will therefore be the one starting at 350º. The first and last ‘No-Hole’ segments will

therefore be combined into a single segment, defined as the last segment. The part

program code will therefore be as follows:

#100=10;

#101=90;

#102=50;

#103=70;

#104=80;

#105=50;

#106=10

#107=-1; END OF PATTERN

G106 H360 A360 C350 R5;


Now that I look at it looks like some kind of steps of the movement of the material.

 

[pullbangdead]

Pitch is often used to refer to the spacing between elements in a regular, periodic pattern. In this case, it sounds like they're just using radial coordinates (angle/distance on an arc) instead of cartesian coordinates to specify the distance between elements in a periodic pattern of holes.