Although they all go by the name "CNC automatic lathe," these machines vary widely in structure.
The fastest way to determine which model fits your shop is to understand the structures along a few selection axes.
This category organizes CNC automatic lathe structures from three perspectives — whether the main spindle moves or is fixed, the type of tool post, and the number of spindles — and explains the differences and best uses of each.
The first axis is whether the machine is a "Swiss-type" (sliding-headstock) lathe, whose headstock moves along the longitudinal axis, or a "fixed-headstock" lathe, whose headstock stays in place.
On a Swiss-type, the guide bushing in front of the main spindle supports the material right next to the cutting tool, suppressing deflection so small-diameter, long parts can be machined with high precision.
The fixed-headstock type, which works without a guide bushing and keeps remnant stock short, machines larger-diameter, shorter parts with better material efficiency.
The two are compared in detail in Swiss-Type vs. Fixed-Headstock Lathes.
The second axis is the tool post type.
The "gang type" lines up multiple tools like the teeth of a comb and switches tools quickly with nothing more than a slide movement, while the "turret type" rotates a circular turret to index among many tools. Which is more suitable depends on the number and complexity of your machining operations.
The third axis is the number of spindles: machines fall broadly into highly versatile "single-spindle" machines and "multi-spindle" machines, which excel in ultra-high-volume production.
Three Axes for Choosing a Structure
(1) Sliding-headstock Swiss-type or fixed type (strong on small-diameter, long parts vs. efficient on larger-diameter, short parts); (2) gang or turret tool post (high-speed volume production vs. many operations); (3) single- or multi-spindle (flexibility vs. production speed).
Thinking along these three axes brings the structure that fits your parts into focus.
These axes may look independent, but they interact.
For example, high-speed volume production of long, slender precision parts points to "Swiss-type with a gang tool post," while complex shapes with many operations point to a "turret type" — work out the combination based on part geometry, dimensions, lot size, and material cost.
The articles below walk through each structure in turn.
Related Articles
Swiss-Type vs. Fixed-Headstock Lathes
A thorough comparison of sliding-headstock (Swiss-type) and fixed-headstock machines — structure, strengths, and material yield — from a machine-selection perspective.
Learn more →What Is a Swiss-Type CNC Automatic Lathe?
The structure and strengths of Swiss-type (sliding-headstock) CNC automatic lathes, which deliver high precision in volume production of long, slender parts.
Learn more →The Role of the Guide Bushing
The role of the guide bushing, which supports the material near the cutting point to suppress deflection and runout — including rotary and fixed types and removable/convertible machines.
Learn more →Types of Tool Posts
The two main tool post designs on CNC automatic lathes — gang type and turret type — and how their structures, advantages, and drawbacks differ.
Learn more →Single-Spindle vs. Multi-Spindle
Productivity vs. cost and setup trade-offs.
How single-spindle and multi-spindle automatic lathes differ, and how to choose between them.