Counterboring

Type of technology

Machining (by means of tools with defined geometry)

Development phase

declining

Level of innovation

enterprise level

Scale of production

batch, unit

Technology readiness level TRL

Description of the technology

Purpose of use

changing the shape and dimensions of holes

Use in industry

all industries

General characteristics

Counterboring is a method of machining that involves changing the shape and dimensions of a part of a hole or
the face associated with that hole. The counterboring process is carried out using multi-blade tools called counterbores. During counterboring, the primary (rotary) motion is performed by the tool. The feed motion is performed by the tool or the workpiece in a direction parallel to the counterbore axis.

Alternative technologies
  • boring
  • hole milling
  • laser beam machining
  • electron beam machining

Visualisation

Advantages and disadvantages

Advantages

  • a relatively quick technique to change the shape of the hole

Disadvantages

  • use of machining fluids that are not inert to people and the environment
  • significant tooling and fixture costs

Workpiece material types

  • all material groups
  • ferrous metals
  • non-ferrous metals
  • non-ferrous metals alloys
  • hard materials
  • hardened materials

Examples of products

  • engine shaft bushings
  • precision hydraulic components
  • ball bearings
  • surgical instruments
  • aerospace components (such as rotors and turbines)

Implementation of technology

Required resources

  • drilling machine or milling machine
  • cutting tools
  • tooling
  • machining fluids (optional)

Required competences

  • training in machining

Environmental aspects

Water consumption

Energy consumption

Waste generated

Expert evaluation

Competitiveness

Usability

Environmental impact

Development centers

  • none

Legal conditions

  • none

Companies using technology

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