Heidenhain Circular Interpolation

Heidenhain circular interpolation, mm what bullshit, this just means cutting in a circular move.

Very often wrongly called interpolation here is Wikipedia meaning.
Well that’s definitely confused me. But to me interpolation means movement.

Circular interpolation moving in a circular motion, full or part circle.
Linear interpolation moving in a straight line.

Heidenhain circular interpolation, there are four ways to produce a circular move on a Heidenhain control. You will love the flexibility of this control once you take the time to get to know it.

1. You can use the same way as a Fanuc using  which is end point and radius.
2. Using tangent and end point.
3. Using circle centre and end point.
4. Intersecting corners then program the function.

This video explains it all. You’ll have four useful tools in your programming toolbox.

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The Heidenhain control offers multiple choices when it comes to circular moves try to use the information straight from your drawing.

That means that if the drawing gives you the points of intersecting lines and a radius then program using the     function. If you are used to programming Haas or Fanuc try not to just stick with what you know.

The extra functionality of this control should make it easier and it’s well worth the time learning to use it.

It is always much easier to check code if it is programmed in the same manner as your drawing is dimensioned. This leaves less room for error and makes checking much easier. Don’t give yourself unnecessary work.

The graphics on these controls are not brilliant but are very useful for error checking your code.

It means you can play around with the different ways of programming before you actually break anything. Try to test your programs in manageable sections.

If you are not sure of a particular part then try to program it in isolation if possible. That way you won’t be dealing with multiple errors. It will be very easy to see where your problem is and sort it.

It is a good idea to try program your part without cutter compensation if you are having problems. You can add it later when you have run the program in graphics and know that the shape is OK and it all works.

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If you want to learn about rads and chamfers on a Sinumeric Siemens 840D read this

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