GB/T 6403.3-2008Knurl (English PDF)

Foreword

GB/T 6403 is divided into five parts.

- GB/T 6403.1 Radii of sphere surfaces;

- GB/T 6403.2 Lubricating grooves;

- GB/T 6403.3 Knurl;

- GB/T 6403.4 Rounding and chamfer of parts;

- GB/T 6403.5 Relief grooves for grinding wheels. This part is the part 3 of GB/T 6403. This part is a revision of GB/T 6403.3-1986 "Knurl".

The main differences between this part and GB/T 6403.3-1986 are as follows.

- MAKE editorial changes in accordance with the requirements of GB/T 1.1-2000;

- ADD the foreword to the standard;

- ADD the scope of application of the standard;

- ADD the standard technical requirements.

1 Scope

This part of GB/T 6403 specifies the general-purpose cylindrical surface knurling type and size.

This part applies to cylindrical knurling for general purposes.

2 Knurl pattern

The pattern of knurl is shown in Figure 1.

3 Knurl shape

The shape of the knurl pattern is a vertical section of the pattern assuming that the working diameter is infinite, as shown in Figure 2.

4 Knurl size specifications

The size specifications of the knurl shall comply with the requirements of Table 1.

5 Marking

Straight knurl with modulus number m = 0.3 mm.

6 Technical requirements

6.1 The average arithmetic deviation of the surface roughness profile before knurling is Ra <= 12.5 µm. […]