DC motors use direct current to produce mechanical force. Most common types rely on magnetic forces from coil currents. Internal mechanisms periodically change current direction. Speed controlled by voltage or field winding current strength
Machine industry produces machines for consumers, industry, and companies. Traditionally belongs to heavy industry, now includes light industry. Most manufacturers are called machine factories
Laser cutting vaporizes materials using high-power laser beams. First production laser cutting machine created by Western Electric in 1965. Laser beam focuses to spot size less than 0.0125 inches. Typical surface finish ranges from 125 to 250 micro-inches
Large multiblock reactor producing steam for massive power. Requires 292 superconducting magnets and 64 central magnet pieces. Functions as 3D model without access hatches. Needs power, water, reactor blanket, and plasma for operation
Founded in 1969 in Castello di Godego, Treviso, Italy. Started as small workshop by Ampelio Stangherlin. Now operates in natural stone processing and ceramic sectors
KL 624/625 machines for heavy fabrics like transport belts and tire cords. PFAFF 333/335 machines for tacking and basting of jackets and leather goods. PFAFF 337 machines with drop feed for sleeves on jackets