Bar Feeder
Bar Feeders are the most common automation accessories used in metalworking. Generally applied to turning machines, they are designed to deliver a continuous supply of raw machining stock in the form of round, hex, square, and extruded shapes for the manufacture of parts of rotation.
The Bar Feeder is attached to the machine tool at its headstock end. There are two common types of bar feeds available: Hydrostatic and Hydrodynamic. In hydrostatic bar feeds, the bar rests in a series of channels that clamp down on the top and bottom of the stock to hold it in place. In the hydrodynamic bar feeds, the stock is held in a feed tube surrounded by pressurized oil. This allows for faster spindle speeds, but it also increases change-over time from one bar diameter to another. Increasingly, bar feeders are being equipped with "magazine" storage units that are capable or significantly increasing the amount of stock that can be run unattended through the machine tool.
Bar Feeder Main Parameters
For the Bar Feeder definition, refer to section: Common Main Parameters
Bar Feeder Options
The Bar Feeder Options are defined by the following parameters:
| Dwell | Option to handle bar feeder dwell. | NONE/VALUE |
| Rotation | Option to handle spin rotation direction by GCode function. | NONE, CW/CCW, CW/CCW/OFF |
| Spindles Synchronization | Option to synchronize the bar feeder spindle with other device’s spindle by GCode function | NONE, ON/OFF |
| Axes Synchronization | Option to synchronize the bar feeder axes with other device’s axes by GCode function | NONE, ON/OFF |
| Act | Option of activating the bar feeder to advance and retract | NONE, ADVANCE/RETRACT, ON/OFF, ON |
| Lid | Option to handle opening and closing the lid of the bar feeder by GCode function | NONE, OPEN/CLOSE |
Bar Feeder Coordsys
Refer to the Turret CoordSys.