# What does Tool Signature Mean?

By K Balaji|Updated : December 3rd, 2022

Tool signature means the various features of a cutting tool when they are stated in a condensed yet uniform way. As a result, the tool signature gives numerous static geometrical characteristics, notably different angles, and nose radii, for that specific cutting tool. For example, it frequently offers figures for rake angles, clearance angles, cutting edge angles, and nose radius. Different standard systems exist for designating cutting tools, each with advantages and disadvantages compared to the others.

## System to Represent Tool Signature

Tool signature provides numbers for nose radius, clearance angles, rake angles, and cutting edge angles. The three accepted techniques for tool signature are as follows: There are two systems to represent the specifications of the tool

• Tool signature in ASA system: The American Standards Association (ASA) system uses the Machine longitudinal plane, Machine transverse plane, and Reference plane as three mutually perpendicular planes for reference. Two rake angles, two clearance angles, two cutting edge angles, and the nose radius of a single-point cutting tool make up the tool signature in the ASA system.
• Tool signature in ORS system: The three mutually perpendicular planes known as the Cutting plane, Orthogonal plane, and Reference plane are also used by the Orthogonal Rake System (ORS) for reference purposes. S Remember that the ASA system measures nose radius in inches, whereas the ORS system measures it in millimetres.
• Tool signature in NRS system: The Normal Rake System (NRS) uses the Cutting plane, the Normal plane, and the Reference plane as three planes for reference, none of which must be perpendicular to one another.

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## FAQs

• The various type of features of a cutting tool when they are stated in a condensed yet uniform way is called tool signature. It provides static geometrical properties for a particular cutting tool, including various angles and nose radii.

• The tool signature contains many static geometrical features for the specific cutting tool, particularly the nose radius and different angles. It frequently gives values for things like rake angles, clearance angles, cutting edge angles, nose radius, etc.

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