Calypso - Blind Hole Depth

This is an excerpt from the Calypso Handbook

To measure the depth of a blind hole we must calculate the depth by using this process.

Preparations

After creating the Base Alignment and Clearance Planes as normal create a secondary Alignment by measuring the Plane on the top surface on which the bore lies. Define the middle of the bore as the origin.

We will measure a point at the bottom of the bore.

Point:

·        Self-Centering Point

·        Evaluation to Mid-Point

Measurement Process

Measure a point at the bottom of the bore.

When you create the point, you may have to adjust the point I, J, K vectors to drive straight into the bottom of the bore. Be sure to select the secondary alignment with the bore as origin.

Hole Depth Formula

Create a Result Elements Characteristic and right click in the Formula box.

The below formula is for a 118° drill bit angle.

(getActual(“Point1”).z)+((getProbe().diameter*0.5833)-(getNominal(“Cylinder1”).diameter*0.3004)

The below formula is for a 130° drill bit angle.

(getActual(“Point1”).z)+((getProbe().diameter*0.5517)-(getNominal(“Cylinder1”).diameter*0.2332)