Cautions for installation on machining center

For installation of Magic Drill DRA

1st choice 2nd choice

Hydro chuck, power chuck, collet chuck, etc. Side lock arbor

Hydro chuck

Power chuck Install Magic Drill DRA to the chucks

Collet chuck

Example of side lock arbor

Cautions for machining with 8D/12D holder Precautions for KM chipbreaker

Recommended machining Machining on casting surface

1 Make a center spot using DRA 1.5D/3D/5D type. Decrease feed to 0.15 mm/rev until full drill diameter has entered the workpiece (Center spot should be at least half of cutting diameter) 2 Then drill the hole using DRA (8D/12D type). Decrease feed rate as chisel point

1 DRA 2 DRA 8D/12D enters the workpiece until full

diameter is achieved KK

Spot drilling

Applicable workpieces Not recommended workpieces

Shape of Applications Shape of workpiece Applications Shape of workpiece

Applications workpiece Caution for machining

1. When machining stainless steel, for hole depths of up to Plain 0.5DC, keep feed rate at 0.15mm/rev or less. *Hole expansion *Slant surface surface 2. Internal coolant is recommended for smooth chip

removal. For stainless steel, the combination of internal and external coolant is recommended. 1. Fix stacked plates securely to ensure they do not slip

while machining. Applications Shape of workpiece Applications Shape of workpiece

Stacked plates

Half cylindrical *Cored hole 1. When machining concave holes, set the feed rate at half of Concave recommended feed or less for continuous hole machining. surface 2. Utilize a step feeding if chips are not broken short at the inlet. * Machining possible with FTP and 1.5D toolholder 1. Hole machining above the centerline Pipe material of the pipe is possible. 2. Do not machine on

curved surface areas. Center portion *Curved surface

machining portion machining * Machining possible with FTP and 1.5D toolholder