Metal working – Method of mechanical manufacture – Shaping one-piece blank by removing material
Reexamination Certificate
2006-09-19
2006-09-19
Cadugan, Erica (Department: 3722)
Metal working
Method of mechanical manufacture
Shaping one-piece blank by removing material
C409S073000, C409S074000, C409S066000, C409S132000, C408S224000, C470S199000, C407S033000
Reexamination Certificate
active
07107664
ABSTRACT:
A thread cutting milling tool comprises a shank with a working portion formed with a recess for receiving a thread cutting insert. The thread cutting insert has one edge formed with a line of thread-form teeth of identical profile. The thread cutting teeth project laterally for cutting engagement with a work-piece while the tool spins about its axis. The tool also orbits within or about a work piece, and in one orbit of the tool in a helical cutting path relative to the work piece a number of complete turns of the screw-thread are formed which is equal to the number of teeth of the insert in engagement with the work-piece. A secondary cutter carried on the thread cutting milling tool provides for formation of a pilot portion or counter bore on the work piece at an end of the screw thread. The pilot portion or counter bore provides for alignment of a threaded member which is to engage the screw thread. Also, the secondary cutter provides for formation of a blunt or scalloped full-thread starting end for the screw thread at the pilot portion. The blunt starting end for the screw thread is robust, resists damage, and resists cross threading.
REFERENCES:
patent: 1140130 (1915-05-01), Dies
patent: 3829921 (1974-08-01), Delaney
patent: 4125057 (1978-11-01), Cox
patent: 4409868 (1983-10-01), Huddle et al.
patent: 4913604 (1990-04-01), Zaengerle
patent: 5098232 (1992-03-01), Benson
patent: 5733078 (1998-03-01), Matsushita et al.
patent: 5873684 (1999-02-01), Flolo
patent: 5944462 (1999-08-01), Woodward
patent: 6012882 (2000-01-01), Turchan
patent: 6200078 (2001-03-01), Kubota
patent: 6565297 (2003-05-01), Schmitt
patent: 6901642 (2005-06-01), Rydberg
patent: 4010075 (1991-10-01), None
patent: 10252040 (2004-01-01), None
patent: 3-196915 (1991-08-01), None
Kesl Richard J.
Weise Gary K.
Cadugan Erica
Miller Terry L.
LandOfFree
Screw thread cutting apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Screw thread cutting apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screw thread cutting apparatus and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3555937