Präzises und effizientes Bohren mit Bohrern ab 0.2 mm (.008")

CrazyDrill Non-Ferrous NN 5 x d

• No centering or pilot drill is needed thanks to the high degree of self-centering capability
• In case of inclined surfaces, CrazyDrill Crosspilot should be used as pilot drill. 
• When dealing with irregular and/or rough surfaces, to achieve high-precision position accuracy, CrazyDrill Twicenter may be used as a center drill. 

CrazyDrill Non-Ferrous NN/NK 8 x d

Because of the high degree of self-centering capability, CrazyDrill Non-Ferrous can be used on regular and straight surfaces without a centering or pilot hole for drilling depths up to 8 x d.

Higher requirements: for irregular or rough or inclined surfaces or for the highest degree of position accuracy, Mikron Tool recommends:

• CrazyDrill Pilot SST-Inox as pilot drill
• CrazyDrill Twicenter as center drill
• CrazyDrill Crosspilot as pilot drill for inclined surfaces

CrazyDrill Non-Ferrous NN/NK 12 x d

Mikron Tool recommends a pilot or center hole for CrazyDrill Non-Ferrous 12 x d

• CrazyDrill Pilot SST-Inox as pilot drill
• CrazyDrill Twicenter as center drill
• CrazyDrill Crosspilot as pilot drill for inclined surfaces 

Pilot drilling with CrazyDrill Pilot SST-Inox or centering with CrazyDrill Twicenter are the perfect combination for a precise hole (position and alignment accuracy) and a stable machining process.

The pilot drill CrazyDrill Crosspilot does the same when drilling on inclined surfaces.

The hole quality (position and alignment accuracy, no measurable transition from pilot to follow-up hole) and a stable machining process (no jamming) is guaranteed by matched tool tolerances.

Tolerance of the pilot drill CrazyDrill Pilot SST-Inox (m5): +0.002 mm / + 0.006 mm (+ .00008” / + .00024”) 

Tolerance of the pilot drill CrazyDrill Crosspilot (inclined holes) (k6): 0 mm /+ 0.006 mm (.0” /+ .00024”) up to diameter 3.00 mm, + 0.001 mm  / + 0.009 mm (+.00004”  / +.00035”)

Tolerance of follow-up drill CrazyDrill Non-Ferrous NN/NK 8 x d and 12 x d (k5): 0 mm /+ 0.004 mm (.0” /+ .00015”) 

Tolerance of follow-up drill CrazyDrill Non-Ferrous NN 5 x d (k6): 0 mm /+ 0.006 mm (.0” /+ .00024”) up to diameter 3.00 mm, + 0.001 mm  / + 0.009 mm (+.00004”  / +.00035”) 

General information

In the industry of metal work tools, shorter processing times are always in high demand. At the same time, the requirements to the manufacturing precision and the process reliability are extremely high. In order to fulfill these requirements, the "machine tool – spindle – tool – tool holder" system need to be considered as a whole (see additional info).

For the use of the types of drill bits CrazyDrill Non-Ferrous, CrazyDrill Pilot SST-Inox, CrazyDrill Twicenter and CrazyDrill Crosspilot, Mikron Tool has defined a fast and process-reliable procedure which achieves optimum  drilling results.

Non-Ferrous drilling up to 12 x d

1. Pilot resp. center drilling (in one step)
2. Drilling in several pecks (deep-drilling cycle with chip breaking and chip removal)

Drilling according to DIN 66025 / PAL

G83 deep-drilling cycle with chip break and chip removal
Q = depth of the respective peck

1. Centering or pilot drilling:

• With CrazyDrill Twicenter (irregular or rough surfaces) or CrazyDrill Crosspilot (inclined surfaces) for version 5 x d 
• With CrazyDrill Twicenter or CrazyDrill Pilot SST-Inox (irregular or rough surfaces) or CrazyDrill Crosspilot (inclined surfaces) for version 8 x d
• With CrazyDrill Twicenter or CrazyDrill Pilot SST-Inox (straight surfaces) or CrazyDrill Crosspilot (inclined surfaces) for version 12 x d

2. Drilling:

• With CrazyDrill Non-Ferrous up to maximum drilling depth Q1 in one step, followed by peck to remove chips

• Further pecks Qx according to cutting data table, followed by peck to remove chips

Note:

Between pecks, take the drill completely out from the bore. After the drill reached desired cutting depth, return at increased feed rate (or in case of perfect conditions rapid traverse) to safety position.

Mikron Tool has determined the ideal cutting parameters (drilling speed to tool life ratio and process reliability) when using CrazyDrill Non-Ferrous NN and CrazyDrill Non-Ferrous NK. The detailed cutting data tested by Mikron Tool, such as cutting speed Vc, feed rate f and material removal rate Q, permit quick and secure machining.

The overview of the cutting values table according to material group, material type, hardness degree and tensile strength, material number, DIN and AISI/ASTM/UNS permits quick determination of the parameters to be used.

A high-quality, impact-resistant, and user-friendly single package is provided for all CrazyDrill Non-Ferrous drills. 

Please find more information about tool holders, cooling or lubrication under “Additional Info”.

Mikron Tool has an international team of cutting technology experts who  are pleased to answer your questions (how to use a drill, tools, machines, tool holders, cooling, machining process…).

Use this link to contact us directly.