Engineering Calculator MM

Engineering Calculator MM is a tool for CNC programmers, machine operators, toolmakers and manufacturing engineers. Tolerances, threads, speeds and feeds, materials, machine elements, shop calculations, machine timers and attendance – all on your iPhone, clear and fully offline. It works even on a shop floor with no signal. TOLERANCES AND FITS • Holes and shafts to ISO 286 – fields A … Z and a … z, grades IT1 – IT18, sizes up to 500 mm • Upper and lower limits, mean size and a clear drawing • Clearance, interference and transition fits (e.g. H7/g6) • ISO 2768 general tolerances • Favourite fields (H7, h6 …) one tap away THREADS • Metric coarse and fine, UNC, UNF, UNEF, trapezoidal Tr and Pg conduit threads • Pipe threads G, R/Rc/Rp, NPT and Whitworth BSW/BSF • Internal and external dimensions, tolerance classes and recommended tap drill • Thread turning: thread depth and final diameter X SPEEDS, FEEDS AND TIME • Turning, milling, end mills, drilling and tapping • Cutting data by material group, limited to your machine's max RPM • Metric and inch units MATERIALS • Material groups, equivalent designations and properties – just type C45, 1.4301 or 42CrMo4 MACHINE ELEMENTS • Screws: clearance holes, counterbores, tap drills and tightening torques for classes 8.8, 10.9 and 12.9 • Hardness conversion HRC / HV / HB / tensile strength • Parallel keys with keyway tolerances, retaining ring grooves and O-ring grooves • Common G and M codes with search, for mills and lathes SHOP CALCULATIONS • Bolt circle with X/Y coordinates and a drawing • Blank weight and material cost • Theoretical turning roughness and the feed for a required Ra • Tapers, sine bar and measuring threads over wires A TIMER FOR EVERY MACHINE • Any number of machines with your own name and icon (mill, lathe, wire EDM …) • Set the warning before the end for each machine • Rings at the end even when your iPhone is locked, with vibration • 11 original tones and adjustable ringing time • Running countdowns are visible on every screen ATTENDANCE AND SHIFTS • Clock-in and out, breaks, overtime and working-time fund • Estimated gross pay from your hourly rate and bonuses • Shift calendar including 4-crew operation and public holidays TOOLS • Calculator with history, angle functions and a triangle solver • Notes in folders with numbering and bullets • One search for everything: H7, 25H7, M10, G 1/2, C45 … LOOK AND COMFORT • 22 themes, 20 backgrounds, light and dark mode, adjustable corner rounding and text size • Your own shortcuts on the home screen • 11 languages: Slovak, Czech, English, German, Spanish, Polish, Ukrainian, Russian, Hindi, Japanese and Chinese • Back up and restore your data to a file PRIVACY No ads, no sign-up and no tracking. All your data stays on your phone. Note: calculated cutting data are a guide only. Real values depend on clamping, the tool, the machine and other factors.