Title: Boring rod extension with two counter-rotating boring tool carriers

Abstract: An extension for a boring rod with two counter-rotating boring tool carriers. The boring tools of the carriers are arranged at opposite ends of the boring tool carrier and displaced through 180.degree. relative to each other. The boring tool carriers have a cylindrical shaft and are each guided within a chuck socket, which sockets have a cone on their external ends and both sockets are arranged within a through longitudinal bore in a housing capable of being mounted within the boring rod. Threaded rings are screwed into each end of the longitudinal bore and act in conjunction with the chuck socket through their internal conical part to effect an axial seating between the inner end of the chuck socket and an adjusting bushing, movable within the longitudinal bore, which engages by means of two threads running counter to each other with the corresponding threads of the boring tool carrier. A centering device is provided between the housing and the boring rod.

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Inventors: Eckle, Otto (Lochgau, DT)

Application Number: 527225
Filing Date: 1974-11-26
Publication_date: 1977-03-29
Assignee: KOMET Stahlhalter-und Werkzeugfabrik, Robert Breuning GmbH (Besigheim, DT)
Primary Class(es): 408/183 408/713
Other Classes:
US Patent Ref:

1563108	Nov, 1925	Prance	408/154.
3697187	Oct, 1972	Faber et al.	408/154.
3700346	Oct, 1972	Eckle	408/153.
3724965	Apr, 1973	Green	408/183.
3738767	Jun, 1973	Benjamin et al.	408/161.
3767317	Oct, 1973	Ortlieb	408/183.

Other Refs:
Primary Examiner: Yost, Frank T.
Assistant Examiner: Bilinsky, Z. R.
Attorney: Woodhams, Blanchard and Flynn