| 摘要 |
A tool block comprises plates providing therebetween a tool holder guide channel for preventing movement of a tool holder along two of three orthogonal axes while permitting slidable adjustment relative to a workpiece along the third or adjustment axis. A pair of preload blocks normally clamp the tool holder against movement along the adjustment axis. A pair of forked shaped wedges straddle the tool holder and are adjustably received in recesses cut in opposite sides of the tool holder. Each wedge has a set of ramp shaped cam surfaces inclined along the adjustment axis for cooperating with a set of mating ramp shaped cam follower surfaces on the tool holder recesses to overcome the clamping preload of the preload block and slide the tool holder in one direction along the adjustment axis.
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