Common ISO Insert Designations and What They Mean
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Common ISO Insert Designations and What They Mean
ISO insert designations are an essential part of the ISO 10312-1:2012 standard, which outlines the design and dimensions of metric inserts for workpiece holders. These designations are used to specify the exact type and size of the insert required for a particular application. Understanding these designations can help in selecting the right insert for a specific machine tool and workpiece holder. Below are some of the common ISO insert designations and what they mean:
1. A, B, C, and D Designations:
The A, B, C, and D designations refer to the type of insert. Each type has different features and is suited for different applications:
- A Type: This type features a cutting edge that is perpendicular to the insert body. It is commonly used for face milling operations.
- B Type: The B type has a cutting edge that is parallel to the insert body. It is suitable for end milling operations.
- C Type: C type inserts have a cutting edge that is at a 45-degree angle to the insert body. They are ideal for corner rounding and chamfering applications.
- D Type: D type inserts are used for drilling operations, featuring a straight cutting edge and a shank that is typically used in drills and boring bars.
2. R and T Designations:
The R and T designations refer to the material from which the insert is made:
- R Type: R type inserts are made from high-speed steel (HSS). They are versatile and can be used in a variety of cutting conditions.
- T Type: T type inserts are made from tungsten carbide. They are harder and more wear-resistant than HSS inserts, making them suitable for more aggressive cutting conditions and longer tool life.
3. E Designation:
The E designation refers to the cutting edge of the insert. There are two main types:
- Face Milling Inserts
- E1 Type: This type has a single cutting edge and is used for standard cutting operations.
- E2 Type: E2 type inserts have a wavy cutting edge, which helps reduce cutting forces and improve chip evacuation. They are suitable for roughing and finishing operations.
4. H and J Designations:
The H and J designations refer to the insert holder size. They are used to ensure compatibility between the insert and the holder:
- H Type: H type holders are used for small diameter inserts and are commonly found in face milling applications.
- J Type: J type holders are used for larger diameter inserts and are typically used in end milling applications.
Understanding these ISO insert designations will help you choose the correct insert for your specific machining requirements. It is essential to refer to the ISO 10312-1:2012 Seco Inserts standard for detailed information on the dimensions and specifications of each insert type.
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