Drilling Spindles

Drilling spindles are one of the important types of spindles used in a number of industries. They are designed for use in drilling purposes, specially with good thrust capacity besides radial load rating. They have found different types of applications in different industries.

Drilling: Meaning
Drilling is the process of producing cylindrical holes in solid materials. In machine and tool industry it has the specific purpose of drilling into metals, inside the earth, under sea-beds etc.. The process of drilling has traveled a long distance from ancient period to the present scenario.


Drilling Spindle: Types
The classification of drilling spindle is done on the basis of the machinery which is used to drive the spindle machines. Basically all spindles have same categories as the drilling spindle.

• High frequency drilling spindles
• Belt driven drilling spindles
• Motorized drilling spindles
• Deep Hole drilling spindles
• Surface drilling spindles

Features of drilling spindles

• Different drilling spindles have different drilling capacities depending on the application.
  
  
• Drilling spindles can be gear driven or belt or motorized driven.
  
  
• They can also be high-frequency drive spindles.
  
  
• Round body, cartridge, or block spindle housing may be configured with suitable drives to perform various operations.
  
  
• The majority of bearings used in rilling spindles are either pre-loaded taper roller or ball bearings.
  
  
• The drilling spindles are also designed as AC frequency-controlled motor spindles, which eliminate external vibrations and reduce required maintenance.

Uses of machine tool drilling spindles

• Used in the drilling of steel and titanium.
  
  
• Particularly suitable for milling and drilling of metallic and non-metallic materials at highest speed and continuous power.
  
  
• Gear driven drilling spindles are useful for extreme, heavy duty applications.
  
  
• These spindles can be used in applications where closely spaced bores or drilled holes are grouped.
  
  
• Drilling spindles are recommended for applications where positional or geometric accuracies are very important.
  
  
• Drilling spindles are used on a variety of lathes, CNC machines and similar machining equipment.
  
  
• A high speed drilling system is mainly used in high speed drilling of very small holes in workpieces like printed circuit boards etc.