microtap is a unique torque controlled tapping machine used for comparative analysis of cutting fluid efficiency and cutting tool geometry. In principle, the advantage of its design gives credible results.

• Electronic torque monitoring directly from the spindle motor.
  
• Direct link from the cutting tool to the spindle motor.
  
• Infinitely variable speeds from 300 to 3,000 RPM for optimum flexibility.
  
• Precision depth measurement and control for consistent operation.
  
• The floating spindle movement follows the pitch of the tap, thus, eliminating axial force errors as seen in conventional lead screw machines.
  
• The use of the automatic spindle advance aids in eliminating error by applying the same downward force for each cut.
  

The X-Y autotable provides precise indexing to the next test hole, which maintains the level of consistency required for comparing tests.

Test Bars are arrayed holes, drilled and reamed in a single 14” x 2” x 1/2” form, available in an assortment of metallurgy and hole diameters.

microtap WinPCA software evaluates all measurements by displaying them in a graphic representation, showing the maximum torque, calculating the mean value and standard deviation, then automatically stores the cut data for future reference.

Equipment
The following equipment is used for the testing procedure outlined below.

• labtap II G8 thread tapping machine (50-700 Ncm torque range) with optional ZAP auto-spindle advance.
  
• X-Y autotable with Pendant and Test Bar fixture.
  
• Test Bar for M6 cutting tap
  
• M6 alignment tool
  
• M6 x 1 spiral point uncoated cutting taps
  
• Computer with WinPCA software
  
• Data collection sheet
  
• Dispensing Pipets, one for each fluid
  
• REFERENCE FLUID as a standard of comparison for the family of FLUID UNDER TEST.
  
• FLUID UNDER TEST in at least 50ml containers
  
• Solvent for cleaning oil-based fluids or alcohol for water-based fluids.

Click here to download the complete Methodology Procedure