Общий каталог Yamawa 2022 - 2023 - страница 1223

Features of MC-Helical Thread Mills

Cutting principles

The edge of an MC-helical thread mill does not have lead, like a tap. To tap internal threads with an MC-helical thread mill, you need to use “helical interpolation” on an MC machine. Helical interpolation moves a tool in a helical manner using simultaneous 3-axis control. Right-hand or left-hand is determined by combining the vertical and horizontal moving directions of the shaft (X-axis) as shown in the figure below. The shaft itself rotates clockwise.

【Meanings of arrows】

Rotation direction of the tool Horizontal moving direction Vertical moving direction

of the tool of the shaft Right hand thread

Down-cut Up-cut (Climb) (Conventional)

Left hand thread

Down-cut Up-cut (Climb) (Conventional)

Technical Inf

Note : Basically, conventional milling is recommended due to excellent chip ejection. However, climb milling is recommended in the case of poor horse power and poor rigidity of the machine.