Patent ID: 6371176
Filing Date: 2002-04-16
Classification: B27C,B27M

Abstract:
A planing machine for planing and shaping a surface of a workpiece, the planing machine comprising:a motor fixedly attached to a carriage assembly said carriage assembly comprising a plurality of lower support members rigidly attached to a rectangular shaped support surface comprising two side support members and two end support members, said side support members being rigidly attached to said end support members thereby forming said support surface having an outer perimeter and an inner perimeter; a base fixedly attached to said lower support members; a cross-member support beam fixedly attached to said base; an upper support member rigidly attached to one of said side support members of said support surface; a rotatable cutting member comprised of a cutting blade and a cutting member base and adapted for cutting a surface of the workpiece, said rotatable cutting member being pivotally attached to one of said side support members of said support surface so as to allow movement up and down; a rocking table top comprising two inner sides and two inner ends and disposed within said inner perimeter of said support surface, said inner ends of said rocking table top pivotably attached to said inner perimeter of said end support members of said support surface; a cylindrical drive pulley fixedly attached to said side support members to pull the workpiece through the planing machine; a rotatable guide wheel pivotably attached to said upper support member and disposed directly above said drive pulley whereby said guide wheel applies pressure to the workpiece; an irregularly shaped cam disk rotatably attached to said base and disposed directly below said cutting member; a piston arm member comprising a lower end and an upper end, said lower end having a rotatably attached wheel resting on said irregularly shaped cam disk and said upper end being slidably attached to said carriage assembly thereby being disposed beneath the cutting member; an adjustable stop attached to said support surface and disposed directly below said cutting member wherein said cutting member rests upon said adjustable stop, thereby limiting the depth of the cut by said cutting member; a spring-loaded brace comprising a second bolt, a brace arm slideably attached to said second bolt, a spring disposed about said second bolt and above said brace arm, and a second nut threadably attached to said second bolt such that said spring forces said brace arm away from said second nut, said spring loaded brace being fixedly attached to said side support member such that said brace arm is disposed above said cutting member base, thereby exerting a downward force on said cutting member base; a first drive chain connecting said motor to said irregularly shaped cam disk; a second drive chain connecting said motor to said drive pulley; whereby the workpiece is pulled through the machine by said drive pulley and is held to said rocking table top by said guide wheel and is cut in a predetermined pattern by the up and down movement of said cutting member as controlled by the rotation of said irregularly shaped cam disk and movement of said piston arm.