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FT 100

- Measurement of feed force and torque


Technical Description

Investigation of cutting forces during drilling is fundamental to the teaching of cutting techniques. The setup comprises a transducer, which also holds the specimen being machined, and an amplifier unit with digital displays. The axial force (feed force) and torque occurring during cutting are measured using strain gauge transducers and digitally displayed on the amplifier unit. 

The experiments must be conducted in a workshop environment, as a suitable drilling machine is required.

The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.

Learning Objectives / Experiments

- measuring feed force and torque at the cutting surface
  * influence of rotational speed, rate of feed, lubrication and cooling conditions
- influence of the cutting geometry of the drill
- influence of the material being machined


[1] drilling measurement device
[2] measurement of feed force and torque 
[3] strain gauge type measuring transducer
[4] strain gauge amplifier with digital displays for axial force and torque
[5] splash-proof stainless steel housing for transducer
[6] GUNT software for data acquisition via USB under Windows Vista or Windows 7

Technical Data

Drilling diameter: max. 16mm
- square LxW: 25x10...25x20mm
- possible materials: steel, brass, aluminium, copper, plastic
Measuring ranges
- axial force: 0...10kN
- torque 0...50Nm
Strain gauge in half-bridge configuration

Dimensions and Weight

LxWxH: 220x150x230mm (transducer housing)
LxWxH: 230x210x120mm (amplifier)
Weight: approx. 20kg
Required for Operation 230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase

Scope of Delivery
1 measurement kit for drilling experiments, comprising transducer and strain gauge amplifier
1 GUNT software CD + USB cable
1 set of instructional material

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