Drilling tool and method for producing port seals

Details Drilling tool and method for producing port seals Drilling tool and method for producing port seals

2006-01-10

2009-12-15

Howell, Daniel W (Department: 3726)

Cutting by use of rotating axially moving tool

Tool or tool with support

Having stepped cutting edges

C408S713000, C408S227000

Reexamination Certificate

active

07632050

ABSTRACT:
The present invention provides a new drilling tool useful in machining hydraulic port seals for fluid power ports. The drilling tool drills the port hole to size in a solid material for the minor thread diameter in combination with forming the port in a single operation. The drilling tool has a tool holder having a rotational axis, a first drilling insert having cutting surfaces on a first side and a mounting surface on a second side, at least one second drilling insert having a predetermined cutting surface portion and a mounting portion which is mounted on the holder at a location from the rotational axis of the holder. The at least one second drilling insert has first and second portions which engage and machine a work piece in a drilling operation to form a spot face and a seal form.

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