38.5 мм Свердло з конічним хвостовиком по металу DIN 345 RN

Taper Shank Drills DIN 345 RN

DIN 345 taper shank twist drills in RN execution are designed for drilling holes in metal workpieces. The Morse taper shank fits a matching machine spindle socket or suitable adapter sleeve, providing a secure connection for drilling operations.

Applications:

Used for drilling through holes and blind holes on drilling machines, lathes and other equipment with compatible taper toolholding. Suitable workpiece materials depend on the drill material, cutting geometry, surface treatment and manufacturer’s recommendations.

Operating Principle:

The cutting edges remove material through relative rotation between the drill and workpiece, while the spiral flutes carry chips away from the cutting zone. The mating taper surfaces locate the tool and transmit torque through friction when correctly seated.

Diameter and Length:

The drill diameter determines the nominal hole size. Overall length, flute length and Morse taper size vary with the selected drill. Usable drilling depth also depends on chip evacuation, coolant access and the rigidity of the machine setup.

Cutting Section:

The spiral flutes provide space for chip formation and removal. As drilling depth increases, monitor chip flow and use an appropriate withdrawal cycle when necessary. Leave sufficient flute length outside the hole so that chips can escape without packing.

Tool Geometry:

DIN 345 specifies the dimensional series for twist drills with Morse taper shanks. RN identifies the tool execution. The exact point angle, helix angle, cutting material and any coating should be checked in the specifications of the selected drill.

Practical Recommendations:

Clean and inspect both mating taper surfaces before installation, then seat the drill according to the machine manufacturer’s instructions. Confirm that the taper size or adapter sleeve matches the spindle socket. Secure the workpiece, apply a controlled axial feed and use suitable cutting fluid. Remove the drill with the appropriate ejector or drift.

Specifications:

• Tool type: taper shank twist drill for metal
• Standard: DIN 345
• Execution: RN
• Shank type: Morse taper
• Morse taper size: depends on the selected drill
• Diameter: depends on the selected size
• Overall length: depends on the selected size
• Flute length: depends on the selected size

Cutting Characteristics:

A correctly seated taper connection supports stable tool positioning. Hole quality depends on cutting edge condition, spindle alignment, setup rigidity and effective chip evacuation.

Cutting Parameters:

Select spindle speed and feed according to drill diameter, tool material, workpiece material and hardness, hole depth and cooling conditions. Check that the machine and toolholding arrangement can accommodate the required torque and axial force.

Suitable Operations:

• Drilling through holes and blind holes in metal
• Drilling on machines with compatible Morse taper sockets
• Preparing holes for subsequent tapping, boring or reaming
• Workshop and production machining of metal components

Limitations:

The taper shank requires a matching socket or suitable adapter. Dirt, damage or incorrect seating can cause runout, slipping and damage to the taper surfaces. These drills are not intended for side milling. Tight hole tolerances may require a subsequent finishing operation.