Overview
ISO 10910:1995 establishes a standardized graphical format and a coded classification of approximate chip control zones for indexable inserts fitted with chipbreakers. The standard is intended to help suppliers and users produce and read performance diagrams that show the ranges of feed and depth of cut where chips are controlled. It is explicitly a tool for general pre-selection rather than a detailed application guide for specific chipbreaker products.
Key Topics
- Graph format: A template graph (see standard figure) uses axes for feed (f) and depth of cut (ap) to map insert performance.
- Feed and depth ranges cited in the standard: f = 0.025 mm/rev to 2.5 mm/rev; ap = 0.1 mm to 16 mm.
- Classification zones: The diagram is divided into six classification zones, coded A through F. Each zone identifies the primary intended use where the insert achieves controlled chip formation.
- Test conditions for diagrams: Diagrams are typically produced from a standardized cutting test. The standard specifies key test conditions such as:
- Type of machining: external turning.
- Workpiece material (example in the standard): C45 (see ISO 683-1).
- Normalized hardness example: 180 HB to 200 HB.
- Cutting speed: adapted to the workpiece material and noted on the diagram.
- Minimum part diameter noted in the example: 100 mm.
- Supplier responsibility: Suppliers classify a chipbreaker insert with a single zone code (A–F) that best represents its principal area of use. The standard allows suppliers to provide zone-based pre-selection information alongside their existing insert designations.
Applications
ISO 10910 is useful for:
- Rapid pre-selection of indexable inserts with chipbreakers based on expected feed and depth of cut.
- Creating and interpreting performance diagrams to communicate likely chip control behaviour.
- Assisting tooling engineers and purchasers to shortlist insert families before detailed machining tests.
- Standardizing the way suppliers present chip control data, improving comparability across products.
Practical users should note that actual chip form and control depend on the workpiece material, machining parameters, insert size and geometry; the standard’s diagrams provide a generalized starting point, not definitive application prescriptions.
Related Standards
- ISO 3002-1 / ISO 3002-3: Basic cutting data and geometry references (tool angles, feed definitions).
- ISO 1832: Designation of indexable inserts.
- ISO 3685: Tools life testing methods (reference to chip form descriptions in annexes).
For specification and implementation, consult the full ISO 10910:1995 text and referenced ISO documents to ensure accurate test conditions and correct use of the coded zones.