Mill-Turn Enables Multitasking, Single Setup Machining
Starrag’s Bumotec s191 mill-turn center can reduce lead times by completing a range of different tasks in a single setting.
Starrag’s Bumotec s191 mill-turn machine is capable of turning, milling, drilling, thread forming, grinding, gearcutting and broaching, all in a single setup. The machine can perform accurate (to ± 2.5 microns) machining tolerances within its X-, Y- and Z-axes measuring 410 mm, 200 mm and 400 mm, respectively, due to its linear drives and high-level thermal stability, according to the company.
Its main spindle is complemented by a subspindle that can turn in both horizontal and vertical planes. Tool magazine options extend to up to 90 pockets on a machine that has rapid traverse rates of 50 m/min and a 30,000 (or 40,000)-rpm spindle speed that also contributes to its fast cycle times.
The Bumotec s181 and s191 machines are available for rental, providing potential users with a cost-effective way to capitalize on the benefits of multitasking, single setup machining. The company says this enables customers to avoid relatively high upfront capital expenditure, yet immediately benefit from the machines’ ability to drastically reduce lead times by completing a range of different tasks in a single setting.
Just like a car or a machine, the human body benefits from the technological progress of small parts turning equipment. Precision and stringent requirements for safety and stability are essential in the medical industry. In fact, the demands made on surgical screws (bone screws, maxillary-facial screws, implants and so on) and bio-implants can be much greater for the human body than for many industrial and commercial product applications.
Jake Grainger says he always had a mechanical bent, and 38 years ago when he first walked into a screw machine shop he was hooked.
Introduced to the turn-mill machine tool design in about 1996, the Y axis was first used on a single-spindle, mill-turn lathe with a subspindle. The idea of a Y axis on a CNC originated from the quality limitation of polar interpolation and the difficulty in programming, not from electronic advances in controls or servomotor technology as one might commonly think.