Parametric Parting Off Tool for lathe using spring

Parametric Parting Off Tool for lathe using spring.

!!! be aware:!!!

• I have made so far the tool for bladeType=bt_HBM_1_5x8_25x73 from metal with wPartingTool = 11.6
• I have made so far the tool for bladeType=bt_HBM_3_32x1_2x4 from metal with wPartingTool = 14.8
• I do not own "bladeType=bt_3_32x1_2x45" and "bladeType=bt_3_32x11_16x5", so I cannot test these.  I recommend to 3D print these and test fit before machining them.

The tool is inspired by the designs of both Winky and NBR Works: https://www.youtube.com/@WinkysWorkshop https://www.youtube.com/@nbrworks

Following blade types have been modeled: 

• 3/32" x 1/2" x 4-1/2" (bladeType=bt_3_32x1_2x45=0) used by NBR Works 
• 3/32" x 11/16" x 5" (bladeType=bt_3_32x11_16x5=1) used by Winky 
• 1.5 x 8.25 x 73 (bladeType=bt_HBM_1_5x8_25x73=2)
• 2,5x10x100 (bladeType=bt_HBM_2_5x10x100 = 3)
• 3/32"x1/2"x4 (bladeType=bt_HBM_3_32x1_2x4 = 4)
   

Machined (3D printed) Parts:

• PartingTool_Top_type.stl
• PartingTool_Bottom_type.stl
• PartingTool_QCTP.stl

Other parts:

• hex screw M5 (7x)
• screw M8 (3x) for MultifixA

Interesting parameters to change (and rerender the model):

• strengthFulcrum = 13.0; // higher value will result in stronger spring
• wPartingTool = 15.0;  // higher value will result in stronger spring
• screwType = stM5;
• bladeType = bt_HBM_1_5x8_25x73;

Remarks:

• PartingTool_QCTP is the connector for attaching the Parting tool to a MultifixA quick change tool post (QCTP).

Category: Machine Tools