Multi-Spindle Lathe Completes Complex Parts at High Volumes
IMTS 2018: Index’s MS40-8 multi-spindle automatic lathe with eight CNC spindles has been designed for high-volume precision work in the automotive, fastener, connector and aerospace industries.
Index’s MS40-8 multi-spindle automatic lathe with eight CNC spindles has been designed for high-volume work in the automotive, fastener, connector and aerospace industries. The machine features two back-working spindles with up to 18 X-axis and Z-axis CNC slides and additional Y axes if required.
The machine can process chucked workpieces or bar stock through the company’s MBL40-8 bar loader, also on display. The 110-mm chuck enables machining of pre-formed, forged or extruded parts ranging to 80 mm. For simple parts, the machine can be used as a double four-spindle machine, reducing cycle times.
The compact spindle drum with eight fluid-cooled motorized spindles achieves up to 7,000 rpm, 24 kW and 57 Nm. The spindles are designed for speed control, high torque, compact size and limited maintenance.
Built to complete complex parts in one setup, the machine features as many as two pivoting synchronized spindles able to work on as many as seven rear-side machining tools, four of them live. Two rear-side machining tools can work simultaneously on the workpiece.
Each spindle is independently programmable, enabling users to modify parameters to machine difficult materials. Drum indexing makes speed changes possible. Users can set up live tools on the compound slides, enabling a range of operations such as off-center drilling, thread cutting and more.
Consider these alternatives when conventional drilling can't do the job.
One of the most common methods of tapping in use today on CNC machines is 'rigid tapping' or 'synchronous feed tapping.' A rigid tapping cycle synchronizes the machine spindle rotation and feed to match a specific thread pitch. Since the feed into the hole is synchronized, in theory a solid holder without any tension-compression can be used.
Running rotary milling cutters at the proper speeds and feeds is critical to obtaining long tool life and superior results, and a good place to start is with the manufacturer's recommendations. These formulas and tips provide useful guidelines.