Apparatuses and Methods for Cutting a Reverse Spot-Face in a Workpiece

摘要

A reverse spot-facing tool for cutting a reverse spot-face in a workpiece using a reverse spot-facing cutter configured to engage a pilot shaft having a first end and a second end is disclosed. The workpiece comprises a through hole having a central axis. The reverse spot-facing tool comprises a stop configured to be located between the first end and the second end of the pilot shaft; a biasing assembly that generates a first thrust force and an equal and opposite second thrust force when the reverse spot-facing cutter is cutting the reverse spot face; and a thrust bearing configured to be positioned between the biasing assembly and the stop. When the reverse spot-facing cutter is cutting the reverse spot-face, the thrust bearing transmits the second thrust force from the biasing assembly to the stop, and the biasing assembly transmits the first thrust force to the workpiece.

主权项

1. A reverse spot-facing tool (100) for cutting a reverse spot-face (R) in a workpiece (W) using a reverse spot-facing cutter (102) configured to engage a pilot shaft (104) having a first end (101) and a second end (105), the workpiece (W) comprising a through hole (H) having a central axis (A), the reverse spot-facing tool (100) comprising:
a stop (132) configured to be located between the first end (101) and the second end (105) of the pilot shaft (104); a biasing assembly (109) that generates a first thrust force (F1) and a second thrust force (F2) equal and opposite to the first thrust force (F1) when the reverse spot-facing cutter (102) is cutting the reverse spot face (R); and a thrust bearing (126) configured to be positioned between the biasing assembly (109) and the stop (132), wherein, when the reverse spot-facing cutter (102) is cutting the reverse spot-face (R), the thrust bearing (126) transmits the second thrust force (F2) from the biasing assembly (109) to the stop (132) and the biasing assembly (109) transmits the first thrust force (F1) to the workpiece (W).