2. Multi-machine mechanical feeder: using chain feeding propulsion mechanism for feeding, advantage: relative to the oil film feeding is cheap and can be put more than one material to reduce the intensity of the work of manpower;
3. Oil film type automatic feeder: more than one feed, the surface of the workpiece requires a high level of product must use this feeder;
4. Workpiece surface requirements of higher products must be used in this feeder;
4. Short material feeding machine: there are some work due to the short clamping length, large quantities and the need for two processing of the product, you can use the vibrating plate + double spindle centering machine, the middle of the feeder automatic processing;