The post gives the Wrong spindle angle and disengaging direction when using boring bar with shift.

[werkplaatsZ45TW]

When i post my operation the post processor automaticly give disengaging direction acording to my given spindle shift orientation, i want (Q336) it to be 90°. Then  i want my boringbar (bb) moving in x-0.5 the direction, then Q214 should be 1. But the post outcome is Q214=2, see the pictures. So, i need to change the spindle angle with 90°. What should i write in the lines 1693 or/and 1694 to change the angle with 90° compared to what Q336 is gonna be.

I hope it is clear what i mean.

Thanks,

 Roald

[a.laasW8M6T]

I dont know if this is the correct way  to do it bit I modified the angle in this part of the Post code to get the disengaging direction correct for my application

/** Returns the best discrete disengagement direction for the specified direction. */
function getDisengagementDirection(direction) {
  switch (getQuadrant(direction + 315 * Math.PI / 180)) {
  case 0:
    return 3;
  case 1:
    return 4;
  case 2:
    return 1;
  case 3:
    return 2;
  }
  error(localize("Invalid disengagement direction."));
  return 3;
}

My spindle 0 position is facing -Y so this disengages with the angle Q336 = 0 and uses disengaging direction 4.

that way i dont mess with anything in the operation in fusion i just select fin boring shift and go.

[werkplaatsZ45TW]

Hello and thanks for your reply!

This could be a solution, but it is not what  i am looking for and also, i don't know where to place this bit of code in the post. I think that the post i have is almost good, accept the disengagementdirection and the spindle angle have a 90° difference. That is what i want to modify.

Thanks!

[a.laasW8M6T]

can you share your actual post processor file here, I can have a look at it and see what I can do.

[werkplaatsZ45TW]

Hello,

First thanks for your reaction, much appreciated!

I dropped the post down here. (lines 1670 till 1682)

The post automaticly chooses a disengaging direction, but not the right one.

When i fill in 90°(plus and minus 45°) it chooses disengaging direction 2 instead of 1

340°(plus and minus 45°) it chooses disengaging direction 1 instead of 2

260°(plus and minus 45°) it chooses disengaging direction 4 instead of 3

170°(plus and minus 45°) it chooses disengaging direction 3 instead of 4

Is this what you need to have and know?

Thanks in advance,

Roald

[a.laasW8M6T · Accepted solution]

Ok I have it figured out.

I modified the Function from lines 1654-1669

/** Returns the best discrete disengagement direction for the specified direction. */
function getDisengagementDirection(direction) {
  switch (getQuadrant(direction + 45 * Math.PI / 180)) {
  case 0:
    return 3;
  case 1:
    return 4;
  case 2:
    return 1;
  case 3:
    return 2;
  }
  error(localize("Invalid disengagement direction."));
  return 3;
}

To the following

/** Returns the best discrete disengagement direction for the specified direction. */
function getDisengagementDirection(direction) {
  switch (getQuadrant(direction + 45 * Math.PI / 180)) {
  case 0:
    return 4;
  case 1:
    return 3;
  case 2:
    return 2;
  case 3:
    return 1;
  }
  error(localize("Invalid disengagement direction."));
  return 3;
}

This now outputs the direction following how you have described

I have uploaded the modified post

[werkplaatsZ45TW · Accepted solution]

Wow, thank you so much for helping me out, it works perfect!!!

Thank you so much, have a great day,

Many thanks,

Roald