Trigonometric Functions; Definitions; Programming Trigonometric Functions - HEIDENHAIN TNC 620 User Manual

Programming Q parameters | Trigonometric functions
9.4

Trigonometric functions

Definitions

Sine: sin α = a / c
Cosine: cos α = b / c
Tangent: tan α = a / b = sin α / cos α
where
c is the side opposite the right angle
a is the side opposite the angle α
b is the third side.
The control can find the angle from the tangent:
α = arctan (a / b) = arctan (sin α / cos α)
Example:
a = 25 mm
b = 50 mm
α = arctan (a / b) = arctan 0.5 = 26.57°
Furthermore:
a² + b² = c² (where a² = a x a)
c = √ (a + b )
2 2

Programming trigonometric functions

You can also calculate trigonometric functions with Q parameters.
Select the Q parameter function: Press the Q key
in the numeric keypad
The Q parameter functions are displayed in the
soft key row.
Press the TRIGONOMETRY soft key
The control displays the soft keys for
trigonometric functions.
HEIDENHAIN | TNC 620 | Klartext Programming User's Manual | 01/2022
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