How To Prevent Delamination While Drilling Carbon Fiber and Other Composite Materials

The Deschner Dual Speed Mini-K Kinechek

 During the drilling of an in-line hole, a negative deformation plane forms as chip formation stops and the tool approaches the end of the cut.  The shearing of the negative deformation plane contributes to burr formation and breakout as cracks spread along the plane causing destruction of the desired finished exit hole.  When drilling carbon fiber and other composite materials, this breakout occurs as "delamination" and can be a costly problem. 

Delamination and splintering of various composite materials.

The Dual Speed Mini-K Kinechek Speed Regulator is specially designed for the drilling of carbon fiber and other composite materials, especially in hand-operated drill applications.  The "Dual Speed" function increases production efficiency and reduces worker fatigue, while eliminating delamination and breakout.  The first part of the stroke is the "Fast Feed" (F.F.) feature, which is freely managed by the worker (SPEED 1)* to drill as quickly as possible through the workpiece.  The final 1/4 inch of the stroke is the "Control Feed" (C.F.).  As the drill nears the exit hole, the C.F. engages and slows down the forward motion (SPEED 2)** to minimize delamination and breakout, hence the name “Dual Speed”.   Although our standard C.F. is fixed at 1/4 inch, this distance can be customized to your particular application.  

*    The F.F. (SPEED 1) is not affected by the unit’s adjustment knob.   It is governed by the viscosity of the internal fluid.  For instance, the F.F. of a "Standard Speed" Dual Speed Mini-K unit will have more more resistance (move slower) than a "Fast Speed" Dual Speed Mini-K unit.  In hand-held applications, this translates to the worker having total control of the speed.  The length of the F.F. can be customized to a particular custom application but, once established, it cannot be altered.

**  The C.F. (SPEED 2) is regulated by the adjustment knob just like a regular Mini-K Kinechek.  The overall range of speeds attained by the unit's adjustment knob is also subject to the viscosity of the internal fluid, as defined by it's model number.

Available Speeds: 
Extra Fast (3021D-19-x)
Fast (3023D-19-x)
Standard (3022D-19-x)
Slow (3024D-19-x)

Available Overall Stroke Lengths:
1/2 inch
1 inch
1 ¼ inch
1 ½ inch

Maximum Load Capacity:
400 lbs.

With the exception of the Cushion-Start model (a special combination shock absorber and speed regulator), Kinecheks are not designed to withstand impact from a free-traveling load (force).  See our Kinechek bulletin for more details.  Continual contact between all other Kinechek models and the moving load (force) should be maintained to ensure maximum service life and to retain a valid warranty.

MORE INFORMATION ABOUT THE DESCHNER DUAL SPEED MINI K KINECHEK
Specialty Kinecheks - http://deschner.com/products/specialty-kinecheks
Video Demo - http://deschner.com/wp-content/uploads/Dual-Speed-Mini-K-Animation.swf
Full Video on Youtube -  https://youtu.be/zK5Ff4joVio


DOWNLOAD PDF SPEC SHEET OF DESCHNER DUAL SPEED MINI K KINECHEK
STANDARD http://deschner.com/wp-content/uploads/S-66-Dual-Speed-Mini-K-Spec-Sheet-PG-15-INSERT.pdf


OTHER YOUTUBE VIDEOS USING THE DESCHNER MINI K KINECHEK
ANDREWS TOOLS - https://youtu.be/ru5OUKGiWTY
ANDREWS TOOLS - https://youtu.be/j9PyMWKI3wg 
ANDREWS TOOLS - https://youtu.be/SZqHonGWoN8
BLACKALLOY - https://youtu.be/ncxEHVFb1c8
AUTODRILL - https://youtu.be/99wYTj161l4



Deschner Corporation
714-557-1261
1-800-457-6666
info@deschner.com