Is it possible to add a variable cutting feed in trajectory milling

[asifcad]

hello experts this is asif I have a question about variable feed. is it possible to add a variable feed on trajectory milling on different areas of trajectory .for example I have a trajectory whose length is 100mm. So I need the cutting feed from 0 to 25mm to be 50mm/minute then 25 to 50 to be 100mm/minute and so on so....I don't want to add a feed on G-codes manually...but right now manually add a feed on a different portion of G-codes.. need advice.

regards

asif

[JonathanCook]

I included a model (in CREO 10) that should solve your issue.  

1 Create a sketch with a curve split into your distance segments.  

2. add a trajectory

  2a In TOOL MOTIONS add a CURVE CUT for each curve segment.

  2b delete (CUT) the retracts and Auto Plunges between the CURVE CUTS.

  3c open parameters for each curve cut and modify the CUT_FEED.

        you can also see all the curve speed segments in table form. (see below)

[asifcad]

Dear  JonathanbcookEn many thanks for your reply its a tricky idea and it works..but with only 3 axis trajectory.. what I am trying to do using 5 axis trajectory to make a path for 5-axis welding .and to control the axis I am using the pivot curve option. and here your trick is not working correctly due to 5 axis complex path.

[bmuller]

If this is a five-axis tool path, be sure to use INVERSE_FEED=YES  and make sure your post can handle that parameter.

[asifcad]

yes, you are right already using this INVERSE_FEED..but my question is still unanswered . JonathanbcookEn trick is working fine but only 3 axes.. not applicable on 5 axis due  to axis definition 

[JonathanCook]

Here is a method that I believe will give you different feeds along a 5-axis (or 3 or 4-axis) trajectory. 

Note: this example will assume 4 different feed rates at 0% to 25% curve lenght 25% to 50%, 50% to 75% and 75% to 100%. 

1. Create the trajectory

2. In the tool Motions dialog box copy the "Curve Cut"

3. past the Curve Cut three times so you have 4 Curve cuts.

4. Delete the "Auto Plunge" for the 2nd, 3rd, and 4th curve cuts

5. Right click the "Follow Cut id XX" and pick Edit Definition

6 Set Follow Cut to "Ratio"  

7. Set End 1: to 0

8 Set End 2 to .25

9 exit with OK

10 Repeat for the next three Curve Cuts. 

   10 A. 2nd Curve Cut End 1=.25 End 2=.5

   10 B. 3rd Curve Cut End 1=.5 End 2=.75

   10 C. 4th Curve Cut End 1=.75 End 2=1.0

11. Goto Parameters 

12 Click on tools

13 check mark "Show All Value Columns"

14 edit the feed rate for each Curve Cut

[asifcad · Accepted solution]

Problem solved👍

Dear bunch of salutes to you sir very tricky solution thanks for your time and effort to solve my problem.

regards

Fisaasif

[asifcad]

Robot alternative homemade 5-axis welding machine g-codes verification before execution. complete 3d design and 5-axis programming on creo parametric. G-codes verification on vericut.

[JonathanCook]

The project looks great!  What controller do you use to control your machine?

- Jonathan.

[asifcad]

thanks, Jonathan for your appreciation. I did use Mach 3 on this machine.

Regards

Asif

[asifcad]

Concept to reality 5 axis weld machine