Patent ID: 8413563
Filing Date: 2013-04-09
Classification: B23D,B26D,Y10T

Abstract:
1. A height adjustment device for adjusting the height where a saw blade guiding device of a band saw is located, the height adjustment device comprising: a base having a through hole running through top and bottom sides thereof; a guide rod passing through the through hole of the base for connection with the saw blade guiding device, the guide rod being axially movable relative to the base; a first gear rack mounted to the guide rod and passing through the through hole of the base; a first driving unit having a wheel, a first gear disposed in the base, and a linking rod having two ends respectively connected to the wheel and the first gear, the linking rod being movable along a direction perpendicular to an axial direction of the guide rod for enabling the first gear to be engaged with the first gear rack through the movement of the linking rod; a second gear rack mounted to the guide rod and passing through the through hole of the base; and a second driving unit having a motor mounted to the base, a second gear rotatably disposed in the base and engaged with the second gear rack, and a worm connected to the motor and engaged with the second gear.