Form Tool Calculation Program
Form Tool Design Manual

Then as you enter each part diameter, the program calculates the corrected step difference.

FOR RESHARPENABLE QUICK CHANGE SHAVE TOOL INSERTS

All you need to do is enter:
• Front Clearance Angle = 0º
• Top Rake Angle = 0º
• Base Diameter of Part = .000",.125" or .500" depending on holder being used

Then as you enter each part diameter, the program calculates the corrected step difference.

FOR CIRCULAR FORM TOOLS

All you need to do is enter:
• Tool Diameter ---
Tool Offset Distance---
• Top Rake Angle---
• Base Diameter of Part---
Then as you enter each part diameter, the program calculates tool diameter and step difference.

FOR FLAT TYPE FORM TOOLS

All you need to do is enter:
• Front Clearance Angle ---
• Top Rake Angle---
• Base Diameter of Part---
Then as you enter each part diameter, the program calculates the corrected step difference.

FOR RADIUS PROBLEMS

All you need to do is enter:
• Enter any two of the three dimensions of a chord.
The program will calculate the third dimension.

FOR TRIANGLE PROBLEMS

All you need to do is enter:
• Any two of the four dimensions of a right angle triangle.
The program will calculate the remaining two dimensions.

FTSC

Form Tool Design Manual

THE SOMMA FORM TOOL DESIGN MANUAL ANSWERS ALL THE QUESTIONS YOU WANTED TO KNOW ABOUT FORM TOOL DESIGNING