topic Re: Safe Positions for tool change/rotation in HSM Post Processor Forum

Safe Positions for tool change/rotation

Anonymous — Tue, 20 Apr 2021 23:55:52 GMT

I have attached my post.

I would like the machine to move to the safe position: X 7.5 , Y 0 , Z 0 , B0 , Z0 on tool change.

I also need the machine to move to the same safe position before it rotates to start the next operation.

Currently it's not going to a safe position before it attempts to change the tool or to start the next op and this could cause a crash

Re: Safe Positions for tool change/rotation

KrupalVala — Wed, 21 Apr 2021 08:01:55 GMT

Hi @Anonymous ,

We can call/add X Y Z B home positions but is it safe to call all in a single line?

Thanks,

Re: Safe Positions for tool change/rotation

Anonymous — Wed, 21 Apr 2021 08:08:52 GMT

I'd prefer to retract z, then rotate B 0, then go to X, Y home. I believe
this is safest

Re: Safe Positions for tool change/rotation

KrupalVala — Wed, 21 Apr 2021 08:27:14 GMT

Hi @Anonymous ,

I have added Z and B Homing position in a simple way.

// save tool change position if (insertToolCall && !isFirstSection()) { writeBlock(gFormat.format(53), "Z" + xyzFormat.format(0)); //add the code to get Z safe positon code writeBlock(gFormat.format(53), "B" + xyzFormat.format(0)); //add the code to get B safe position code if (properties.safeToolChangePositionX || properties.safeToolChangePositionY) { writeBlock(gFormat.format(53), conditional(properties.safeToolChangePositionX, "X" + xyzFormat.format(0)), conditional(properties.safeToolChangePositionY, "Y" + xyzFormat.format(0))); } }

please test the post and let me know if you want to add or change in it.

thanks,

Re: Safe Positions for tool change/rotation

Anonymous — Tue, 04 May 2021 23:49:53 GMT

This fix works great for when it does a tool change and a new operation comes up, but we still have an issue where we would like it to do this same series of moves between operations when there is no tool change. Is the "!isFirstSection()"

code specifying a new operation?

Re: Safe Positions for tool change/rotation

KrupalVala — Thu, 06 May 2021 12:25:33 GMT

Hi @Anonymous ,

For that you need to add below codes at the end of a function onSectionEnd() { .

forceAny(); //Add Below codes from here... writeRetract(Z); //Go M140 writeBlock(gFormat.format(53), "Z" + xyzFormat.format(0)); //add the code to get Z safe positon code writeBlock(gFormat.format(53), "B" + xyzFormat.format(0)); //add the code to get B safe position code if (properties.safeToolChangePositionX || properties.safeToolChangePositionY) { writeBlock(gFormat.format(53), conditional(properties.safeToolChangePositionX, "X" + xyzFormat.format(0)), conditional(properties.safeToolChangePositionY, "Y" + xyzFormat.format(0))); } // to here

Thanks,

Re: Safe Positions for tool change/rotation

Anonymous — Thu, 10 Jun 2021 23:05:44 GMT

This post has been working great for several weeks, however I just identified a problem. When two operations in a row utilize the same tool and the same rotation, the machine rotates to our defined home (z0 B0... etc) between the two operations but then it doesn't rotate back and still thinks it's in the correct work plane. It then starts the next operation in a totally incorrect workplane and crashes. Is there any way to fix this?

Attached is our most recent post version

Re: Safe Positions for tool change/rotation

KrupalVala — Fri, 11 Jun 2021 07:00:37 GMT

HI @Anonymous ,

Please add below condition right after the previously added codes.

if (currentSection.isMultiAxis() || (!is3D() && !currentSection.isMultiAxis())) { writeBlock(gRotationModal.format(69)); // cancel frame forceWorkPlane(); }

Thanks,

Re: Safe Positions for tool change/rotation

Anonymous — Fri, 11 Jun 2021 17:14:58 GMT

That seems to work now. Thank you