topic Re: Force spindle percentage instead of RPM in HSM Post Processor Forum

Force spindle percentage instead of RPM

Anonymous — Fri, 07 Apr 2017 16:01:41 GMT

I'm currently working on an HSMWorks post for an older Bostomatic SPC II control.

The current max RPM spindle speed range is 400 - 4000. (If I change the belt, the range would change to 700 - 7000.)

How can I post to convert the rpmFormat into the required percentage?

The integer representing the percentage following the S in the output should be from 10 to 100, with no decimals. (S10 - S100)

Can HSMWorks use the RPM data from the tool library, limited to 400 - 4000 rpm, and post the S code as a percentage?

...any help appreciated....

Re: Force spindle percentage instead of RPM

pdelioussine — Mon, 10 Apr 2017 03:40:28 GMT

  if (insertToolCall ||
      isFirstSection() ||
      (rpmFormat.areDifferent(tool.spindleRPM, sOutput.getCurrent())) ||
      (tool.clockwise != getPreviousSection().getTool().clockwise)) {
		  
		var percentSpeed = 100*tool.spindleRPM/4000; // Variable for percent mode
		  
//    if (tool.spindleRPM < 1) {
    if (percentSpeed < 10) {	// Lower limit of percentage
      error(localize("Spindle speed out of range."));
    }
//    if (tool.spindleRPM > 99999) {
    if (percentSpeed > 100) {	// Upper limit of percentage
      warning(localize("Spindle speed exceeds maximum value."));
    }

    writeBlock(
      //gFormat.format(141), sOutput.format(tool.spindleRPM), mFormat.format(tool.clockwise ? 3 : 20) // RPM mode
	  gFormat.format(141), sOutput.format(percentSpeed), mFormat.format(tool.clockwise ? 3 : 20) // Percent mode
    );
  }

The above should do the trick. I have also included a few screenshots, as reference (used a fresh Bostomatic post for this).

All it does is substitutes the original spindleRPM with the percentage, which is a calculated variable at the start of the "S" output code block.

In addition to performing the arithmetic, it also binds the value between 10 and 100(%).

Once its past all that, just ended up reusing the sFormat as it proved very convenient.

A note: Just be careful with ridgid tapping with this one, as I do not know how well percentage will correlate with actual spindle speed.

Plus you can get even fancier with it, you could add a user option for the post which would ask if you are using the 7k belt.

Then it would use the appropriate denominator...

Re: Force spindle percentage instead of RPM

pdelioussine — Mon, 10 Apr 2017 04:36:00 GMT

// user-defined properties
properties = {
  writeMachine: true, // write machine
  writeTools: true, // writes the tools
  preloadTool: false, // preloads next tool on tool change if any
  showSequenceNumbers: true, // show sequence numbers
  sequenceNumberStart: 10, // first sequence number
  sequenceNumberIncrement: 1, // increment for sequence numbers
  optionalStop: true, // optional stop
  separateWordsWithSpace: true, // specifies that the words should be separated with a white space
  belt7k: false // specifies if the 7000rpm belt is in use
};

		var sDenom = (properties.belt7k ? 7000 : 4000); // Set the denominator per belt setting		
		var percentSpeed = 100*tool.spindleRPM/sDenom; // Variable for percent mode

Well here it is... now there is a setting in the post processor menu for 7k belt, default is false.

Based on this it will set the correct denominator, and output the correct percentage.

Like last time screenshots attached, both of code and test NC.

Hope this works out, let me know if you have any questions.

Best,

Peter

Re: Force spindle percentage instead of RPM

Anonymous — Mon, 10 Apr 2017 12:40:27 GMT

pdelioussine : Thank you very much... This did the trick...much appreciated

Re: Force spindle percentage instead of RPM

pdelioussine — Mon, 10 Apr 2017 16:27:35 GMT

You are welcome, glad I could help