Vertical saw machine

A vertical saw machine comprising:

• a column including a rear body which has upper and lower ends opposite to each other in a longitudinal direction, and upper and lower supports which respectively extend from said upper and lower ends forwardly and in a first direction transverse to the longitudinal direction, and which are spaced apart from each other in the longitudinal direction to confine a working space therebetween;
• a motor having an output shaft to deliver a drive force;
• a saw blade driven by the drive force of said output shaft, and having a sawing portion which is running along a running route that extends from said upper support to said lower support and that is spaced apart from said rear body in the first direction;
• a table including a horizontal support wall which is adapted to support a workpiece and which extends into said working space, said table being mounted relative to said column such that said sawing portion intersects said horizontal support wall with an included angle facing towards said rear body, and at a centerline which is oriented in a second direction that is transverse to both the longitudinal direction and the first direction, and such that said column is turnable about the centerline between a normal position, where the included angle is 90 degrees, and an inclined position, where the included angle is an obtuse or acute angle;
• a frame post including a bottom end adapted to be positioned on a ground surface, and a major mounting wall extending from said bottom end in an upright direction which is parallel to the longitudinal direction when said column is in the normal position, and terminating at an upper end which is proximate to said horizontal support wall, said major mounting wall having right and left lateral surfaces opposite to each other in the second direction, said right lateral surface being disposed to confront said column, and having a key slot which extends towards said left lateral surface and which is configured to confine a guiding route that is arcuate about the centerline;
• and
• a key member having a proximate end secured to said column, and a distal end extending from said proximate end in the second direction such that said distal end is retainingly guided to move along said guiding route and between first and second points which correspond to the normal and inclined positions.