Programming instructions

ADT-CNC4620 Programming Manual

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3.6.6. Radial grooving multi-cycle G75

Instruction format: G75 R(e ) ;

G75 X/U _ Z/W_ P(Δi) Q(Δk) R(Δd) F_ ;

R(e ): radial (X axis) tool retreating, radius, unsigned

X/U: groove end coordinates (X is absolute coordinates, and U is the increment from

current coordinates to point coordinates)

Z/W: groove end coordinates (Z is absolute coordinates and W is the increment from

current coordinates to point coordinates)

P(Δi): single radial tool feeding, unsigned, radius. Feeding direction is same to the

radial direction of the end coordinates.

Q(Δk): axial offset of the tool, unsigned. Offset direction is same to the axial direction

of the end coordinates.

R(Δd)

: axial (Z) tool retreating after cutting to the groove end, unsigned. The

retreating direction is opposite to the axial offset direction of the tool.

F: axial grooving cycle feeding speed

Start point

Execution process:

① First grooving cycle: A

→B

→C

1→D1→A2

A1→B1: radially feed to point B1 in pecking style; B1→C1→D1→A2: fast moving (the

cycle B1→C1 doesn’t have tool retreating action)

② Second grooving cycle: A

→B

→C

2→D2→A3

A2→B2: radially feed to point B2 in pecking style; B2→C2→D2→A3: fast moving.

③ The n

grooving cycle: A

→B

→C

n→Dn→A1

An→Bn: radially feed to point Bn in pecking style; Bn→Cn→Dn→A1: fast moving. G75 grooving

cycle ends