Tool Length Automatic Touch Off Probe Error Analysis LinuxCNC

Automatic tool length probing avoids manual measurements and touch offs and helps verify lengths already in the tool table. Probing tool-length offsets is done into LinuxCNC with an automatic tool length sensor. The sensor has two electrical connections to a Mesa 7i76e board for detecting the tool and for protecting against over travel, and an air solenoid controls an air blast to clear chips between the probe and tool. Reproducibility on a CNC retrofitted mill is high but accuracy is so-so. A good amount of the video is the analysis of sources of error. Channel Love: Likes 👍 are free. https://paypal.me/KentVanderVelden Business Inquiries, I'm a freelance scientific programmer: [email protected] Chapters 00:00 - Introduction 03:08 - Initial testing 04:27 - Backlash and homing error 07:07 - Spindle nose error 08:28 - Modeling tilt error 10:06 - Tramming 12:05 - Probe elevation 13:07 - Following-error 15:14 - Error modeling 18:21- Closing thoughts https://github.com/kentavv/kvvcreates https://www.notion.so/Tool-length-pro... Parts from Amazon (affiliate links): Automatic Tool Sensor: https://amzn.to/31exhhR Air solenoid: https://amzn.to/3l5plHE Silicone Tubbing 2mm ID x 4mm OD: https://amzn.to/3iYTF4M Parts from McMaster: 51835K232 D.O.T. Brass Compression Tube Fitting for Air, Straight Adapter, for 1/4" Tube OD x 1/4 NPTF Male 62005K133 Air Flow Control Valve, Elbow, 1/4" Push-Connect Female Inlet x 1/4 NPT Outlet 5097T41 D. O. T. Hard Nylon Plastic Tubing for Air Opaque Black, 11/64" ID, 1/4" OD, 25 ft. 4429K412 Low-Pressure Brass Threaded Pipe Fitting, Bushing Adapter with Hex Body, 3/8 Male x 1/4 Female NPT 4464K562 Low-Pressure 302 Stainless Steel Plug with Hex Drive, 1/4 NPTF 5975K12 Aluminum Right-Angle Flow Rectangular Manifold, Anodized, 4 Outlets on 1 Side, 3/8 NPT, 6-1/4" Long 4450K3 Muffler, 3/8 NPT Male, Steel, 23 scfm @ 100 PSI Maximum Flow Rate 47865K22 Brass On/Off Valve with Lever Handle, 3/8 NPT Female 44615K463 Standard-Wall Steel Pipe Nipple, Threaded on Both Ends, 3/8 NPT, 4" Long Parts from Northern Tools: Milton M-Style Safety Coupler — Push Button, 1/4in. MNPT, Model# S99706 #KvvCreates, #LinuxCNC, #CNC