Punch and die regrind fixture
OwnerLee A. Warnckeinventor
Life of this patent
Estimating the term…
Abstract
A block having first and second permanent cavities. The first cavity includes a first vertical, continuous V-groove from the rop of the block to a pocket which has a permanent horizontal bottom wall. The second cavity includes a second V-groove that is parallel to the first V-groove, and which is continuous from the top of the block to a second permanent horizontal bottom wall that is at a predetermined height with respect to the bottom wall of the first cavity. Each cavity includes a bar pivotally attached to the block, which includes a flat surface for pressing normally to the bottom of the V-groove, along a vertical line of contact with the vertical cylindrical portion of a tool in the V-groove when the bar is positioned horizontally across the V-groove and is drawn to the block.
Claims10
A punch and die grinding fixture for a punch having a front cutter face and shank toward the front of the punch and a spring head assembly toward the back of the punch, and a mating die having a front cutter face and a back, said fixture comprising:
- a block having a top, a bottom, a first side, a second side, and comprising a first permanent cavity and a second permanent cavity,
- said first cavity being in said first side and comprising an upper portion and a lower portion, said upper portion comprising a pair of walls forming a first vertical V-groove for receiving the punch shank, said lower portion comprising a permanent pocket that is wider and deeper than said first vertical V-groove, for receiving with clearance, the spring head assembly of the punch, and a first permanent horizontal bottom wall in said pocket, for supporting the spring head assembly of the punch,
- said second cavity being in said second side and comprising a pair of walls forming a second vertical V-groove having an axis parallel to the axis of the first vertical V-groove, and a second permanent horizontal bottom wall higher than said first bottom wall, and
- a first means and a second means for pressing respectively said punch shank and said die into the respective first and second V-grooves by bearing respectively on said punch shank and said die normally to the center of the V-groove.
A punch and die grinding fixture for a punch having a cutter face and shank toward the front of the punch and a spring head assembly toward the back of the punch, and a mating die having a front cutter face and a back, said fixture comprising:
- a block having a top, a bottom, a first side, a second side, a third side, and comprising a first permanent cavity, a second permanent cavity, and a third permanent cavity,
- said first cavity being in said first side and comprising an upper portion and a lower portion, said upper portion comprising
- a first vertical V-groove for receiving the punch shank, said lower portion comprising a permanent pocket that is wider and deeper than said first vertical V-groove, for receiving with clearance, the spring head assembly of the punch, and a first permanent horizontal bottom wall in said pocket, for supporting the spring head assembly of the punch,
- said first vertical V-groove being continuous from the top of said block to said permanent pocket,
- said second cavity being in said second side and comprising a second vertical V-groove having an axis parallel to the axis of the first vertical V-groove, and a second permanent horizontal bottom wall of predetermined height with respect to said first bottom wall,
- said second vertical V-groove being continuous from the top of said block to said second bottom wall, and
- a first means and a second means for pressing respectively said punch shank and said die into the respective first and second V-grooves by bearing in a vertical contact line, that is generally normal to the center of the V-groove, along a portion of said shank and said die, and
- said third cavity being in said third side and comprising an upper portion and a lower portion, said upper portion comprising
- a third vertical V-groove for receiving a punch shank, said lower portion comprising a second permanent pocket that is wider and deeper than said third vertical V-groove, for receiving with clearance, a spring head assembly of a punch, and a third permanent horizontal bottom wall in said second pocket, for supporting the spring head assembly of the punch,
- said third vertical V-groove being continuous from the top of said block to said second permanent pocket.
Dependencies are inferred from the claim text.