Swivel Design Automates Angle-Head Positioning
IMTS 2018: Available from Koma Precision Inc., Alberti’s Index series of angle heads combines a swiveling module with a standard angle head.
Available from Koma Precision, the Alberti Index series angle head combines a swiveling module with a standard angle head. This enables using the controlled axis of the machine spindle to automatically rotate and position the head. Technology inside the module “anchors” the head with the machine spindle to ensure proper positioning. From there, spindle rotation drives the unit like a standard angle head..
The angle heads are operated by 6 bars of compressed air through the stop pin or by a closed hydraulic circuit controlled by a piston. They can be exchanged by an automatic toolchanger and can mount heads with collet capacity up to 10 mm in diameter. A single head can be used for multiple operations to avoid additional workpiece setups or tool changes and to carry out various machining processes.
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.
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.
The more common twist drill point geometries often are not the best for the job at hand. By choosing the best point for the material being drilled, it is possible to achieve better tool life, hole geometry, precision, and productivity.