Gear cutting tool
AssigneeBucyrus-Erie Company
InventorsHeinz G. Britsch, Harvey H. Cords, Larry S. Gallett, John G. Lawton
Life of this patent
Estimating the term…
Abstract
A gear cutting tool has a series of separate cutter inserts removeably clamped to the front ledge of a holder block. Each cutter insert has a forward cutting edge that extends beyond the ledge and a rear positioning portion that includes a central projection extending rearwardly from side faces. The central projection mates with a respective one of a series of parallel tracks formed in the holder block and the rear faces mate with upright front walls at the rear of the ledge on either side of the track. The arrangement precisely locates the cutter insert in the holder block. The holder block may be formed of a single piece or may be built up of identical interlocking block elements.
Claims15
A gear cutting tool comprising:
- a tool holder block having a forward ledge and a plurality of spaced parallel tracks extending rearwardly from the ledge, the tracks being defined by parallel upright side walls and the side walls of adjacent tracks being joined by an upright front wall that is perpendicular to the side walls and rises from the ledge;
- a removable cutter insert for each track, each insert having a forward cutting edge that extends beyond the ledge and a rear locating portion;
- said rear locating portion including upright rear faces disposed against the front walls on either side of a track and a central projection extending rearwardly of the rear faces and having parallel side faces that mate with the side walls of the track;
- and
- a clamp for removably clamping each insert onto the holder block.
A gear cutting tool comprising:
- a plurality of tool holder block elements each having a forward ledge and a track extending rearwardly from the ledge, the track being defined by parallel upright side walls, the rear of the ledge being defined by upright front walls on either side of the track that are perpendicular to the track side walls and rise from the ledge, the block elements being joined together in side by side relation with the tracks being parallel to each other and the front walls aligned in a single upright plane;
- a removeable cutter insert for each track, each insert having a forward cutting edge that extends beyond the ledge and a rear locating portion;
- said rear locating portion including upright rear faces disposed against the front walls on either side of a track and a central projection extending rearwardly of the rear faces and having parallel side faces that mate with the side walls of the track;
- and
- a clamp for removably clamping each insert onto the holder block element.
Dependencies are inferred from the claim text.