Overview
A tool turret is a rotating indexing mechanism on CNC lathes holding multiple cutting tools and positioning them for sequential operations. The turret enables quick tool changes without manual intervention, allowing complex parts to be completed in a single setup. Turrets are fundamental to production turning efficiency.
Types and Features
Turrets are classified into servo-driven and hydraulic types. Servo-driven turrets use an electric motor for precise indexing, favored for speed and programmability. Hydraulic turrets use fluid power for robust performance in heavy-duty turning applications with high cutting forces.
Drum turrets hold eight to twelve stations around a cylindrical body while disc turrets offer compact designs. Key features include station count, indexing speed, clamping force, and driven tool capability for live tooling operations like milling.
How to Choose
Determine station count needed for your operations. Complex parts require multiple outer diameter tools, boring bars, grooving and threading tools simultaneously. Select enough stations for your most demanding programs.
Match the clamping system to your tool holder standard including VDI, BMT, and square shank configurations. Evaluate indexing speed since it directly affects non-cutting cycle time.
Installation
Remove the old turret after disconnecting hydraulic lines and electrical connections. Document all connections before disassembly. Clean the mounting surface and install the replacement with proper torque. Initialize in machine control and verify indexing accuracy with a dial indicator.
Maintenance
Lubricate the indexing mechanism per schedule. Monitor hydraulic fluid for hydraulic turrets, replacing fluid and filters at intervals. Inspect coupling teeth for wear. Check clamping bolts regularly since loose tools cause chatter. Schedule bearing inspection to detect early wear.
