Cutting – By endless band or chain knife – With tool in-feed
Patent
1978-02-28
1979-10-16
Schran, Donald R.
Cutting
By endless band or chain knife
With tool in-feed
83 72, 83 13, 83 76, B26D 504
Patent
active
041709152
ABSTRACT:
In a horizontal bandsaw machine of the type having a base with a worktable for supporting a material, and a cutting head assembly carrying a cutting blade which is operable at varying speeds and which is arranged to perform a cutting operation on the material, the cutting head assembly being movable in one direction away from the material by a fluid-actuated mechanism fed by a pump from a fluid reservoir, and being movable in the opposite direction by means of gravity when feeding the cutting blade into the material, a control system for controlling the movement of the cutting head assembly in the aforesaid opposite direction, comprising a plurality of control valves and associated conduits for returning hydraulic fluid from the fluid actuated mechanism to the reservoir during movement of the cutting assembly in its opposite direction, the control valves being responsive in part to changes in the operating speed of the cutting blade.
REFERENCES:
patent: 2602987 (1952-07-01), Wells
patent: 2649646 (1953-08-01), Remmen
patent: 4016787 (1977-04-01), Sugimoto
Amada Company Limited
Schran Donald R.
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