Bar feeder

In most cases, a sliding head machine is equipped with a 3 or 4 meter bar feeder. In some cases, the machine can work with a short ejection device or even without it, for example, when processing short rods made of sintered or powder metal materials, fluoroplastics, etc.

Most devices use the technology of the hydrodynamic effect that occurs when the rod is rotated in an oil bath. At high rotational speeds, an oil wedge is created between the bar and the guide channel, which reduces vibrations, reduces wear on the channels and improves the quality of workpieces. Therefore, it is important to correctly equip the device with the necessary channels, which requires an analysis of the entire range of the processed bar.

Bars can be round, hexagonal or shaped.

A distinction is made between open channel (type U) and fully closed tube bar feeders. Channel type U is used for relatively large diameters of rods and rods of rigid material. A fully enclosed tube is recommended for small diameter bars (2 mm or less) or plastic bars (such as copper), as these bars tend to twist at high rotational speeds.

For the processing of non-rigid, thin rods, it is important to have a system for synchronizing the movement of the feed of the pusher with the movement of the headstock of the machine.

There is a support device between the bar feeder and the machine. It is important that it is effective. It is also necessary to skillfully select support elements depending on the type of bars being processed.