Rangers Die Casting Co., based in Southern California, produces high quality “no porosity” aluminum die cast parts, including automotive fan clutches, carburetion parts for alternative fuel over the road, and also farm and irrigation equipment. All of which require drilling and tapping thousands of holes. More than 30 Dumore drill units handle secondary operations. The units use hydraulic check systems to control the feed rate of each drill. In the past, hydraulic check systems were prone to fluid leaks, causing fluctuation of the drill speed and down time for maintenance.
Deschner Corp., a leading manufacturer of leak proof shock absorbers and motion controllers, also based in southern California, developed a check unit called a “Drill Demon” exclusively for use on Dumore drills. The Drill Demon worked well but was custom made at significant cost. To save cost and improve efficiency, Ranger’s engineering team sought a way to use a standard Kinechek leak proof hydraulic check unit, also available from Deschner.
The Kinechek serves the same purpose as the Drill Demon, but is more compact. To operate with the Dumore drill, it needed a mounting adapter. Ranger engineers machined their own mounting adaptor bracket, which placed the Kinechek unit on the outside of the drill housing. This mounting placed excessive “side load” pressure on the spindle bearings.
Deschner helped Rangers with the introduction of their new universal adaptor that is compact and mounts within the existing drill casing, the same as the original Dumore check unit or the Deschner Drill Demon. It is versatile and allows use of not only the Kinechek® hydraulic check but the Skipchek (for skip drilling) and Peckchek® (for deep hole drilling) units.
Filed Under: Machine tool industry + subtractive manufacturing, Mechanical, Motion control • motor controls, Safety systems + components, Shocks + vibration control • gas springs