Device for cutting frustoconical plugs from a board
AssigneeWolfcraft GmbH
InventorWinfried Ebert
Life of this patent
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Abstract
A device for cutting truncated dowels from a board, with a device including a one-piece cutting body shaped as a hollow cylinder and having a concentric clamping shank. The cutting body is provided with only one recess which forms a knife edge, with the recess opening toward a front of a cutting body and merging into a wider dowel ejection opening. The cutting body has an inside annular cutting edge which determines the larger outside diameter of the truncated dowel to be cut and from which the knife edge originates. The inside circumferential surface of the jacket tapers conically toward the clamping shank, and the knife edge is inclined obliquely inwardly in accordance with the conicity of the inside circumferential surface.
Claims41
A device for cutting frustoconical plugs from a board comprising:
- a concentric shank, a cutting body extending from the concentric shank including a jacket, the jacket having a recess opening at one end of the jacket, a cutting edge extending axially along the jacket, the recess merging with a plug expulsion opening, an annular cutter determining a maximum diameter of the frustoconical plug to be cut located at an end of the jacket and from which the cutting edge departs, the jacket having an inner circumferential surface tapering conically toward the concentric shank and an aperture angle of the expulsion opening being larger than 180.degree., and the jacket having a contact surface, tapering conically toward the concentric shank with a tapper greater than the tapper of the inner circumferential surface, for contacting the frustoconical plugs to eject the frustoconical plugs from the expulsion opening.
A device for cutting truncated dowels from a board, the device comprising a one-piece cutting body shaped as a hollow cylinder and having a concentric clamping shank, the cutting body comprising:
- a jacket provided with only one recess forming a knife edge, the recess being open toward a front of the cutting body and merging into a front of the cutting body and merging into a dowel injection opening having a width greater than a width of the recess;
- and
- an inside annular cutting edge for determining a larger outside diameter of a truncated dowel to be cut, the knife edge originating from said annular cutting edge;
- and wherein
- an inside circumferential surface of the jacket tapers conically toward the clamping shank;
- and
- wherein the knife is inclined obliquely inwardly in accordance with a conicity of the inside circumferential surface.
Dependencies are inferred from the claim text.