Angle 4C - standard variant

This function is used to determine the lead of twisted coolant bores of raw

bars for the production of inner coolant drills with two or more round coolant

bores which have an equal diameter.

After positioning and focussing the raw bar in the prism, activate the function

"Angle 4C ".

Start to construct a circle with three points either left or right. Then click

on the second bore with tree points. Automatically an auxiliary construction appears.

Now rotate the prism with the bar 180° about the horizontal axis.

ATTENTION:  The measurement of the second side of the bar has to be

startedfrom the same bore as on the first front face.

Set again three points per bore and finish the measurement by pushing the

right mouse button. The angular dimension is indicated now.

To calculate the "Is-thread" enter the determined angle into the table element

B9 of the excel protocol and the "Is-value" will be computed automatically.

It is a pre-condition for a correct determination of the value, that the

manufacturers`instructions about the "nominal thread" and the correct length

have been prompted into the table elements B3 and B5 before. 

Angle 4C - advanced variant

This function is used to determine the lead of twisted coolant bores of raw

bars for the production of inner coolant drills with two or more round coolant

bores which have an equal diameter, as well as the following measurements:

Diameter of the raw bar

Distance between the centres of the coolant bores

Centre-offset of the coolant bores 

Diameter of coolant bore 1 and 2