| 摘要 |
<p>A method for assembling a timber doorframe, consisting of a main frame and a liner frame, using a worktable 51. After assembly, the main frame is positioned against one side of an opening, and the liner frame is positioned against the other side, with the liner frame engaging a groove in the main frame to form an adjustable co-operation between the two frame to form the full doorframe. The liner frame and main frame include a lintel, architraves and opposed jambs. A door is supported on one side of the main frame. The work table consists of a movable jamb fence 56 and a moveable door saddle fence 58, together with a fixed lintel fence 57. The various components of the main frame and liner frame can be mounted in the worktable, and the frame is mechanically brought together by adjusting the movable fences to exert pressure on the components. The doorframe and door can be pre-assembled off-site to save installation time.</p> |
