Hole saw tube notcher
OwnerChristopher J. Ruschinventor
Life of this patent
Estimating the term…
Abstract
The present is a hole saw tube notcher with a rotary vice that aligns a tubular workpiece and a hole saw aligning assembly with a rotatable arm that aligns a hole saw to form a single or multiple cut notch geometry with a set radial middle that remains fixed when the rotary arm is rotated and when different diameter workpieces and hole saws are secured to the notcher.
Claims17
A hole saw tube notcher adapted for use with conventional hole saws and a source of rotational power, each hole saw having a saw centerline and given diameter, said hole saw tube notcher being further adapted to form radial notches in elongated tubular workpieces, each workpiece having a workpiece centerline and given diameter, said hole saw tube notcher comprising:
- a rotary vice with at least three movable grippers that define a vice centerline, said at least three grippers being selectively movable to grip and hold one elongated tubular workpiece with its workpiece centerline in substantially co-linear alignment with said vice centerline;
- a saw alignment assembly having a rotatable arm with a saw mount that rotatably holds an arbor, said arbor having a first end adapted to hold one of the hole saws and a second end adapted to drivingly connect the source of rotational power, said arbor being slidably held by said saw mount to allow the hole saw to move linearly along a path of travel toward the workpiece, and said arm being selectively rotatable about an axis of rotation through a range of angular positions, said saw mount positioning the saw centerline in intersecting alignment with said axis of rotation;
- and,
- a solid structure with portions that rigidly join said rotary vice and saw alignment assembly, said solid structure fixing said arm axis of rotation in intersecting normal alignment with said vice and hole saw centerlines at a fixed point located a predetermined distance from said rotary vice, said solid structure selectively holding said rotatable arm at a set notch forming angle when forming the notch in the workpiece.
A hole saw tube notcher adapted for use with conventional hole saws and a conventional hand-held power drill, each hole saw having a saw centerline and given diameter, said hole saw tube notcher being further adapted to form radial notches in elongated tubular workpieces, each workpiece having a workpiece centerline and given diameter, said hole saw tube notcher comprising:
- a dual grip rotary vice assembly formed by a solid plate located between two sets of spaced apart grippers and a drive mechanism including two spaced rotary discs, said solid plate and rotary discs having interior openings held in registry to form a common opening with a common center, said spaced apart gripper sets being located radially from said common center and including at least three grippers to define an operable vice centerline, each set of grippers being located on an opposite side of said solid plate and between one of said rotary discs and said solid plate, said grippers being positioned uniformly around and extending partially into said common opening, said gripper drive mechanism being operable to uniformly rotate said rotary discs about said common center to uniformly move said grippers toward said common center and into spaced dual gripping engagement with the elongated tubular workpiece, said spaced dual gripping engagement aligning said workpiece centerline with said vice centerline;
- and,
- a saw alignment assembly including a pivot block secured to said solid plate, a selectively rotatable arm and a sliding saw mount with first and second locations, said arm being selectively rotatable about an arm axis, said pivot block fixing said arm axis in intersecting normal alignment with said vice centerline at a fixed point located a predetermined distance from said plate, and said saw mount rotatably holding one of the hole saws at said first location and drivingly connecting to the drill at its said second location, said sliding saw mount positioning the saw centerline in intersecting alignment with said arm axis.
Dependencies are inferred from the claim text.