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US 4,581,783 AGranted
Base construction for threading machines
AssigneeEmerson Electric Co.
InventorsRobert J. Hayes, James C. Redman, Erich Netzel
Life of this patent
Estimating the term…
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AssigneeEmerson Electric Co.
InventorsRobert J. Hayes, James C. Redman, Erich Netzel
Estimating the term…
A base for supporting a rotatable spindle shaft and chuck assembly of a motor driven threading machine for rotation about a spindle axis is comprised of axially spaced apart upright support members transverse to the spindle axis and rigidly interconnected by means of a torque tube having opposite ends welded thereto. The spindle shaft, which carries chuck units on opposite ends thereof, extends through the torque tube and is rotatably supported by bearings adjacent the upright support members. A pair of support rails extend through openings therefor in the support members and have ends extending radially outwardly from one of the support members to provide a cantilever support arrangement for the tooling carriage of the threading machine. Additionally, the support members, portions of the support rails therebetween, and the torque tube facilitate the mounting of drive motor and gear box units for the machine.
A base for supporting a roatable spindle shaft and workpiece chuck means of a threading machine in which a workpiece to be threaded extends through said spindle shaft and is engaged by said chuck means at opposite ends of said spindle shaft for rotation therewith about an axis, said base comprising axially spaced apart support members transverse to said axis, torque tube means coaxial with said axis and extending between and rigidly connected to said support members, and a pair of support rails parallel to and laterally spaced from said tube means, said rails extending between said support members and axially outwardly beyond one of said support members to support threading machine tool means, said support members and torque tube means providing a passageway through said base for said spindle shaft, and said support members supporting said support rails for equal force loading relative to said axis whereby said torque tube means is torsionally loaded during threading of a workpiece by said tool means.
A threading machine comprising a base, spindle and chuck means supported on said base for rotation about an axis, and means to rotate said spindle and chuck means, said base comprising axially spaced apart support members transverse to said axis, torque tube means coaxial with said axis and extending between and rigidly connected to said support members, and a pair of support rails parallel to and laterally spaced from said tube means, said rails extending axially between said support members and having portions extending axially outwardly beyond one of said support members to support threading machine tool means, said spindle and chuck means including spindle shaft means coaxial with and extending through said torque tube means and chuck means on opposite ends of said shaft means, a workpiece to be threaded extending through said spindle shaft means and being engaged by said chuck means for rotation with said spindle and chuck means, said means to rotate said spindle and chuck means including drive means mounted on said base axially between said support members and said support members supporting said support rails for equal force loading relative to said axis, whereby said torque tube means is torsionally loaded during threading of a workpiece by said tool means.
Dependencies are inferred from the claim text.