Tool Numbering

Introduction

The number given to a tool is not defined in the tool page itself but in the machining cycle using this tool.

Consequently, the tool number can be defined:

• in the Technology page of each machining cycle

• in the list of operations command:

  • in the machining tree

  • in the menu ‘Optimization’.

• Fixed tools can be defined in the machine file.

Pros & Cons

Numbering a tool either on the tool page or cycle page is a CAM philosophy choice, and it has very concrete impacts on the shop floor.

Principle

• Tool-related numbering: T12 = Ø10 end mill, everywhere, all the time.

• Machining cycle-related numbering: T12 = facing operation, T13 = drilling, etc., even if several cycles physically use the same tool.

Advantages of cycle-related numbering

1. Program readability

The tool number becomes a functional reference:

• T1 = roughing

• T2 = finishing

• T3 = drilling

By reading the ISO code, you immediately understand what the machine is doing, not just which tool is mounted.

2. Flexibility in Modification

If you change tools (e.g., Ø10 end mill → Ø12):

• The number remains the same

• Only the tool behind the cycle changes

Less renumbering, fewer errors, especially on complex or reused programs.

3. Easy Reuse of Cycles

Very useful for:

• Part families

• CAM templates

• Automation

You can reapply cycles without worrying about the overall consistency of tool numbers.

4. Improved Management of Machine Variants

If multiple machines:

• Different tool magazines

• Different tool lengths

• Equivalent but not identical tools

The cycle retains its identity, even if the actual tool changes depending on the machine.

5. Conflict Reduction in Large Programs

In parts with:

• many operations

• rework

• multiple setups

Cycle-based numbering avoids:

• duplicates

• offsets

• "ghost" tools that are never called

Disadvantages (honestly)