VMC 5 axis toolpath

[RICARDO_GOMES]

Hi there folks!

I´m new to 5 axis machining and i need to get a part done using a 5 axis machine. I can do it without the 5 axis simultanesly working but i wanted to learn how to do it. I´ve tried several 5 axis strategies but i do not know how to control the tool, for example, it goes down at the table...

Please, note the part atached. To machine that surface using 4 axis or even 5, wich toolpath can one use? Thanks.

Mastercam 2017

Best regards!

part_jj.mcam

[nickbe10]

1 hour ago, RICARDO_GOMES said:

Hi there folks!

Just out of curiosity, how did you end up so far out of your depth? Is this for work or college?

We will need to know a lot more, like what machine etc.

[crazy^millman]

2 hours ago, RICARDO_GOMES said:

Hi there folks!

I´m new to 5 axis machining and i need to get a part done using a 5 axis machine. I can do it without the 5 axis simultanesly working but i wanted to learn how to do it. I´ve tried several 5 axis strategies but i do not know how to control the tool, for example, it goes down at the table...

Please, note the part atached. To machine that surface using 4 axis or even 5, wich toolpath can one use? Thanks.

Mastercam 2017

Best regards!

part_jj.mcam

Unless the post you have is setup to use a BASE WCS then you haven't gone about creating your WCS correctly, your WCS is where you will be creating your Work Offset on the machine at. I guess you could go about setting up a Work Offset like that on a 5 Axis machine, but not something just starting would normally attempt. I have been doing this for 30 years and not how I was go about creating my workoffset position on the machine. Then your C and T-Planes would use the plane you created. Now depending on the machine and control you will get a mapped position from your Workoffset for the machine you want (WCS) to your machining plane (C-T Plane) in your posted NC code and good to go.

[crazy^millman]

I reviewed the file more and you will have to use a Swarf Toolpath to cut that surface, but need to pay close attention to the Kinematics and closeness of the part to your work holding. I see a possible crash coming.

[RICARDO_GOMES]

42 minutes ago, nickbe10 said:

Just out of curiosity, how did you end up so far out of your depth? Is this for work or college?

We will need to know a lot more, like what machine etc.

Regular stuff at the company i work for but done by 3 progamators, none of them will be at company next 2 weeks so i will have to do the jobs that come in. This one of those jobs.

[RICARDO_GOMES]

26 minutes ago, 5th Axis CGI said:

Unless the post you have is setup to use a BASE WCS then you haven't gone about creating your WCS correctly, your WCS is where you will be creating your Work Offset on the machine at. I guess you could go about setting up a Work Offset like that on a 5 Axis machine, but not something just starting would normally attempt. I have been doing this for 30 years and not how I was go about creating my workoffset position on the machine. Then your C and T-Planes would use the plane you created. Now depending on the machine and control you will get a mapped position from your Workoffset for the machine you want (WCS) to your machining plane (C-T Plane) in your posted NC code and good to go.

First of all, thank you. 

Yes, you are correct, i normaly use WCS at a fixed and straigth position, but in this scenario i don´t even know how to look at it and i am making it more confusing than probably should be...

However, even with correct WCS and planes, i can´t find a toolpath doing the profile aroud the tubular part without a crash, as you can see at your picture, that is the kind of stuff i also get. Wich one did you use to do that?

At my original file i have a 3D with 2 contour toolpaths, and one fixed 5th axe. I do not want that, i want only one pass, 5 axis continuos and where  i can control the sides not allowing the tool going down touching the table. Is it possible? What toolpath should i use?

Thank you all for the responses. 

Best regards

[RICARDO_GOMES]

32 minutes ago, 5th Axis CGI said:

I reviewed the file more and you will have to use a Swarf Toolpath to cut that surface, but need to pay close attention to the Kinematics and closeness of the part to your work holding. I see a possible crash coming.

I will try it again with swarf, thank you.

[So not a Guru]

Why does this need to be 5X?

part_jj-flowline.mcam

[RICARDO_GOMES]

17 hours ago, So not a Guru said:

Why does this need to be 5X?

part_jj-flowline.mcam

Why not? If the machine can do it i need to know how.

[crazy^millman]

1 hour ago, RICARDO_GOMES said:

Why not? If the machine can do it i need to know how.

Good attitude you will do well in this trade. Keep pushing and asking those kind of questions.

[So not a Guru]

2 hours ago, RICARDO_GOMES said:

Why not? If the machine can do it i need to know how.

Ok, I was just pointing out that it wasn't necessary, in this case. It was not meant in a derogatory manner.

I absolutely agree that you should be able to use all of your machines capability. That being said, I generally use 3+2, over 5X, unless I have a specific need for 5X (such as 5X being a faster solution).

[crazy^millman]

1 hour ago, So not a Guru said:

Ok, I was just pointing out that it wasn't necessary, in this case. It was not meant in a derogatory manner.

I absolutely agree that you should be able to use all of your machines capability. That being said, I generally use 3+2, over 5X, unless I have a specific need for 5X (such as 5X being a faster solution).

Good points sir. 

[RICARDO_GOMES]

6 hours ago, So not a Guru said:

Ok, I was just pointing out that it wasn't necessary, in this case. It was not meant in a derogatory manner.

I absolutely agree that you should be able to use all of your machines capability. That being said, I generally use 3+2, over 5X, unless I have a specific need for 5X (such as 5X being a faster solution).

Thank you for the final point you made at this reply, maybe you should have started by that in the previous answer.

When we use 5 axis continuos we low down the probability of having to use specific tooling to achieve a countour, for example. Time, G0 moves, tool changes, precision, M5 avoidances, etc, are all avoided if we can make the machine work as we need and not as easy to program at first glance as it can be.

 

[RICARDO_GOMES]

7 hours ago, 5th Axis CGI said:

Good attitude you will do well in this trade. Keep pushing and asking those kind of questions.

Why are you assuming i have started working today?

This is simple: any one asks for help, i will help if i can. I will not be a smart xxxx over someone because i know how to help and laugh about it. If i do not know how to help i will not answer or i will search to also learn and after can answer. That is how i do 5 axis on mastercam without  even having a simple qualification on it. Thank you. Best regards.

[crazy^millman]

5 hours ago, RICARDO_GOMES said:

Why are you assuming i have started working today?

This is simple: any one asks for help, i will help if i can. I will not be a smart xxxx over someone because i know how to help and laugh about it. If i do not know how to help i will not answer or i will search to also learn and after can answer. That is how i do 5 axis on mastercam without  even having a simple qualification on it. Thank you. Best regards.

I didn't assume anything about when you started working. I liked what you had to say and commented in that regard nothing more and nothing less.