| 摘要 |
A saw chain grinding machine has a disc-shaped grinding wheel mounted for rotation in a fixed position on the base of a grinding machine. A saw chain holder is mounted at one end of a support arm extending across and beneath the wheel, with the opposite end of the support arm being mounted on the base for swinging movement about a pivot axis parallel to the axis of rotation of the grinding wheel. Swinging movement of the support arm causes a corresponding swinging movement of the saw chain holder along the periphery of the wheel. A stop fixed to the machine base limits swinging movement of the support arm in one direction to determine a grinding position for the saw chain holder along the periphery of the wheel. The support arm is adjustable lengthwise for moving the holder and thus a saw chain cutter element toward and away from the wheel in a line extending generally toward the axis of rotation of the wheel when the arm is in grinding position against its stop. In this way movement of the holder along the arm toward the wheel to grind a cutter tooth automatically compensates for wheel wear without changing appreciably the angular positioning of sharpening along the wheel periphery. Apparatus are also provided for adjusting the height and angle of the saw chain holder relative to the peripheral edge of the wheel and for adjusting the position of sharpening of a cutter link on the saw chain holder.
|
