PURPOSE: To provide a saw whose two blades are not detachable during the use thereof by equipping the saw with a reciprocator to reversely reciprocate two paralleled blades to the elongated direction and a generator to generate a force to integrally press the blades at its tooth section.
CONSTITUTION: When an armature axis 11 is driven by a motor 10, a gear 24 is rotated via a pinion 12 by which a cutting tool holder 15 for a blade 7' is moved to the left from the outside right position and a cutting tool holder 18 for a blade 7' position, to the right from the outside left position. That is, the cutting tool holders 15 and 18 reciprocate reversely. When the teeth 46, 47 and 50 for a blade are geared with the work piece, the blade is pushed toward a support plate 6. However, the blade' s displacement to the support plate 6 is protected by the blade-elongated shoulder sections 51 and 52. The support sections 53 and 54 apply the downward supporting forces to the elongated shoulder sections 51 and 52, and said forces become a torque to integrally press the blade at the lower section region with the teeth thereof, the saw teeth 50 being pressed each other.
GROSSMANN HORST (DE)
SCHMID KARL (DE)
STAAS ERNST (DE)
| JPS63147601A | 1988-06-20 |