optimization cuts

[PabloPicasso]

I am trying to understand (unsuccessfully) if on inventor there is a function for optimizing cuts and material skewers.

I found some stupid web programs that make the calculation but I'd like to have this function in inventor.

suppose to make a frame consisting of 30 bars of 120cm, 80 from 64cm and 52 from 100cm (it is a simple example, but it makes the idea)

How can I calculate how many bars from 6 meters buy? or how many from 3 meters?

 

[SolidUser]

I am trying to understand (unsuccessfully) if on inventor there is a function for optimizing cuts and material skewers.

I found some stupid web programs that make the calculation but I'd like to have this function in inventor.

suppose to make a frame consisting of 30 bars of 120cm, 80 from 64cm and 52 from 100cm (it is a simple example, but it makes the idea)

How can I calculate how many bars from 6 meters buy? or how many from 3 meters?

Sorry but you can't make length*quantity/x, where x is the length of the bars, all via bom.
I don't know inventor, but I think through the bom you can do this kind of operations on the columns, or if you carry out on excel, you do the rest you miss to get the result you want.

 

[massimo.l]

inventor does not have this possibility to optimize the cutting of the bar.

 

[Tarkus]

Sorry but you can't make length*quantity/x, where x is the length of the bars, all via bom.
I don't know inventor, but I think through the bom you can do this kind of operations on the columns, or if you carry out on excel, you do the rest you miss to get the result you want.

with your method you have only an approximate idea:
8 pieces from 3300 +
14 pieces from 2500 +
11 pieces from 1850 +
11 pieces of 185 = 83.785 meters, which in 6 meters bars make 13.96 bars or 14 bars.
But you'll need 15 bars.

 

[Tarkus]

............... I found some stupid programs on the net that make the calculation but I would like to have this function in inventor................. .

However if these programs, besides being stupid are also free, post the links :biggrin: :biggrin:

 

[PabloPicasso]

I solved by doing a macro in excel.

anyway, there are so many programs that do it (both free and low cost): http://3d2f.com/tags/cutting/nesting/optimization/software/or look for google: "cut nesting optimization software"I used them frequently when I was cutting the plywood panels. positioning the shapes in the optimal way, you saved a lot in the purchase of the material.

 

[PabloPicasso]

with your method you have only an approximate idea:
8 pieces from 3300 +
14 pieces from 2500 +
11 pieces from 1850 +
11 pieces of 185 = 83.785 meters, which in 6 meters bars make 13.96 bars or 14 bars.
But you'll need 15 bars.

you have perfectly understood the problem :finger:

in English it is called "buckets nesting", but in Italian it translates "annidamento dei cestini".... it does not well the idea.

 

[SolidUser]

with your method you have only an approximate idea:
8 pieces from 3300 +
14 pieces from 2500 +
11 pieces from 1850 +
11 pieces of 185 = 83.785 meters, which in 6 meters bars make 13.96 bars or 14 bars.
But you'll need 15 bars.

look that if you go to the workshop and ask for the amount of friction by cutting or by type, they tell you and since it is a constant, you can put in the operation.
I just gave an idea that is feasible.
I believe in inventor you can create a column in the bom with multiplications and divisions. Right?

 

[maxopus]

this function is typical of cams.
for example in the almà cam for laser tube there is nesting for bars or cams for plates and wood find nesting for sheets.
It is very unlikely to find these features in any cad.

 

[PabloPicasso]

this function is typical of cams.
for example in the almà cam for laser tube there is nesting for bars or cams for plates and wood find nesting for sheets.
It is very unlikely to find these features in any cad.

I thought so, thank you.

 

[SolidUser]

on max... you need the cam to order bars... on a little inventive...the multiplications with a coefficient lead you to the result.
The spherical is a known value, also knows the worker who cuts them.
Do you really need a button to do all this or do you even get there with the bom calculated by your cad?

 

[Tarkus]

look that if you go to the workshop and ask for the amount of friction by cutting or by type, they tell you and since it is a constant, you can put in the operation.
I just gave an idea that is feasible.
I believe in inventor you can create a column in the bom with multiplications and divisions. Right?

Yes'ok,+/- can also be done by adding a compensation coefficient for the rub, but always remains an approximate thing.

this function is typical of cams.
for example in the almà cam for laser tube there is nesting for bars or cams for plates and wood find nesting for sheets.
It is very unlikely to find these features in any cad.

But there wouldn't be any of these functions in the machines that work the bars. .

 

[maxopus]

on max... you need the cam to order bars... on a little inventive...the multiplications with a coefficient lead you to the result.
The spherical is a known value, also knows the worker who cuts them.
Do you really need a button to do all this or do you even get there with the bom calculated by your cad?

until things are very simple you manage them as you say.
when operations become a little more complex ... become pains, you must have a small specific application.
Suppose you have 10 orders.
for each order 10 different lengths with 10 different quantities.
and we also suppose to have more sections (or more materials) and not only one.
How do you optimize on bars from 6 meters or on different formats or different materials?

 

[beccamort]

Yes there are so many programs, but of really freeware I found only 1d stock cutter, many are demos, others limited without license, others paid, someone really sucks!

someone tried others freeware? I'm looking for someone who also manages non-orthogonal cuts.

anyway, there are so many programs that do it (both free and low cost): http://3d2f.com/tags/cutting/nesting/optimization/software/or look for google: "cut nesting optimization software"I used them frequently when I was cutting the plywood panels. positioning the shapes in the optimal way, you saved a lot in the purchase of the material.

 

[Alessio_pvs]

I just came across the problem and I'm ashamed
more than 10 years that in the company we have a laser cutting cam and never thought of a nesting bar..... I'm ashamed.

I'm informing myself. There are several.
I like cam for sheet metal I have sigmanest. I was proposed to use that for the nesting bar. without big claims you can do but honestly I think it is worth spending some extra money and finding something that manages cutting on two floors. otherwise it is a little limited.... I put myself on the search....for now I found only something to 2000 euro
I think it's a good press for the operators. so that they think less and go faster doing less blurring.
we work on orders and therefore always small amounts of material. but always 2-3 extra bars we have to buy them because precisely those who cut the material can do it randomly, currently the only directive they have is to start from long pieces..... you can not!
nesting bars is important caspita.

 

[carnemorta]

look that if you go to the workshop and ask for the amount of friction by cutting or by type, they tell you and since it is a constant, you can put in the operation.
I just gave an idea that is feasible.
I believe in inventor you can create a column in the bom with multiplications and divisions. Right?

from the superficiality with which you approach the question you understand that you have never faced the problem in practice. .
we work in the aluminum tightening industry, on a shop you can have up to 80 silhouettes, with different lengths bar, with straight or inclined cuts, in different finishes. the optimizing through specific software makes you dance the tons of material.
we use the optimizer that is inside the software cad/cam owner of the manufacturer of our machines, I fppro and assure you that no online worker can tell you to span a constant of friction that makes the accounts come back.
as free I often use https://migg.it/optcutfree/ that can be adapted to eat a excel file shot out of the inventor bom, defining appropriate properties for cutting length and end angles.
an extension on inventor nesting to manage linear cuts