AIA NAS909

This specification encompasses machines having the capability of efficiently machining present and predicted future aerospace materials. The specification includes machines with high rigidity characteristics and appropriate speed and feed ranges for use in efficiently machining the entire spectrum of aerospace material including aluminum, magnesium, steels, super alloys, refractories and other thermal resistant materials.

Purpose

This specification provides a standard for the manufacture, performance, reliability, inspection and procurement of a series of horizontal and vertical spindle milling machines, knee and bed types, high and low speed. This standard lists minimum requirements and is not intended to limit design advances.

Classification

The machines shall be of the following type, size and class as specified by the procuring agency.

Type

I Knee Type - Vertical

II Knee Type - Horizontal

III Bed Type - Vertical

IV Bed Type - Horizontal

Size

Small, 28, 34 and 42 inch table travel

Medium, 50 and 60 inch table travel

Large, over 60 inch table travel

Class

I High speed spindle

II Low speed spindle