GB/T 20323-2020Milling cutters designation - Shank-type and bore-type milling cutters of solid or tipped design or with indexable cutting edges (English PDF)

1 Scope

This standard specifies the code names of shank and hole milling cutters with integral or inserted tooth structure or with indexable cutting edges to simplify users and supply

The supplier's communication with this type of tool.

This standard applies to shank and hole milling cutters with integral or inserted tooth structure or with indexable cutting edges.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article

Pieces. For undated references, the latest version (including all amendments) applies to this document.

ISO 3002-1 Basic Parameters of Cutting and Grinding Processing Part 1.General Terms and Basics of Geometric Parameters of the Working Part of the Tool

Quasi-coordinate system, tool angle and working angle, chip breaker (Basicquantitiesincuttingandgrinding-Part 1.Geometryof theactivepartofcuttingtools-Generalterms,referencesystems,toolandworkingangles,chip breakers)

ISO 3002-3 Basic parameters of cutting and grinding. Part 3.Geometric parameters and motion parameters in cutting (Basicquan- titiesincuttingandgrinding-Part 3.Geometricandkinematicquantitiesincutting)

ISO /T S13399-60 Cutting tool data expression and exchange Part 60.Connection system reference dictionary (Cuttingtooldata representationandexchange-Part 60.Referencedictionaryforconnectionsystems)

3 Brief description of code

The code of shank and hole milling cutters is composed of codes containing several symbols. These codes are used to identify important features of milling cutters.

Additional information about the manufacturer or supplier is specified in Chapter 5.

The symbols of this standard are defined as follows.

Definition of number symbol

1 Number symbol phi to identify diameter (see 4.1)

2 Letter symbols to identify the type of milling cutter (see 4.2)

3 Number signs for identifying the number of effective cutting edges (see 4.3)

4 Letter symbols to identify the cutting direction (see 4.4)

5 Identify the digital sign of the entering angle kappar (see 4.5)

6 Letter symbols to identify milling cutter structure (see 4.6)

7 Identify the number sign of the maximum cutting depth or width ap (see 4.7)

8 Letter symbols to identify the helix angle or blade shape (see 4.8)

9 Letter symbols to identify the type of handle (see 4.9)

10 Number symbols to identify the handle type (see 4.10)

11 Number symbols to identify the size of the handle (see 4.10)