Deschner 3222-19-1 Speed Regulator, 1" Stroke for Mini-K

Drilling to a depth of more than three drill diameters often requires peck drilling where the drill is repeatedly withdrawn to remove waste cuttings while being advanced in steps deeper and deeper during each feed movement. For efficient peck drilling, the Kinechek hydraulic feed control must be arranged to act only while the drill is cutting. This requires the Kinechek plunger to remain virtually stationary during the intermittent retractions and reinsertions of the drill bit. After the hole is completed and the drill retracts for the last time before beginning a hole, then and only then should the Kinechek plunger fully extend to be in position to repeat the checking sequence. Kinecheks with PECKCHEK CONTROL are designed to operate in this manner. In addition, the Deschner PECKCHEK CONTROL protects the cutting tool by slightly overlapping the checking action. Each time the cutting tool is retracted to clear chips, the Kinechek plunger rod is allowed to move out slightly (typically .005 inch). When the cutting tool reenters the hole, it is checked just ahead of its last stopping place, preventing the drill from impacting the work piece each time it reenters the hole. The production time lost by the slight overlapping of working strokes is negligible and more than offset by increased tool life and a reduction in down time to replace chipped or broken cutting tools. This feature is especially important when using carbide tooling. Please contact factory if increased stroke overlap is required for special applications

Long hard-rod models for use with A12019 PeckChek Control