Work it out.
Calculators
Cutting data: spindle speed and feed
Skæredata (ISO)
Tolerances and fits
Geometrisk tolerancering
Cutting force in punching/piercing
Presseværktøjsteknik (F = L·t·τ, τ≈k·Rm jf. RoyMech)
Cutting clearance in a punching tool
Presseværktøjsteknik (skær-spalte, branchetommelfingerregel)
Stripper force in a punching tool
Presseværktøjsteknik (afstrejferkraft ≈ 2,5-20% af skærekraften)
Bend allowance with K-factor
Pladebukning (K-faktor, luftbukning – sheetmetal.me)
Material utilisation when laying strips
Forholdsregning (pladeudnyttelse, progressivt stanseværktøj)
Shrinkage compensation in injection moulding
Materialedata (typiske krympningsprocenter, plastdatablade)
Clamping force for an injection moulding machine
Sprøjtestøbningsteknik (klemkraft, materialefaktor jf. tedesolutions.pl)
Cooling time in injection moulding
Sprøjtestøbningsteknik (klassisk afkølingstids-ligning)
Wire EDM: kerf width and programming offset
EDM-teknik (trådgnist-gab, Wire EDM-branchepraksis)
Weight and material cost for a tool steel block
Materialedata (densitet, værktøjsstål/aluminium/messing)
Shot weight and material consumption in injection moulding
Forholdsregning (sprøjtestøbnings-produktionsøkonomi)
Tap drill hole for thread tapping (ISO metric)
Gevindtapning (ISO-metrisk kernehul, D−P tommelfingerregel)
Production capacity of a punching tool
Forholdsregning (produktionskapacitet)
Funnel and hopper
Exact flat pattern
Bent bracket
Exact flat pattern
Flat plate, flange and blank
Exact flat pattern
Stair stringer
Exact flat pattern
Strip layout for a stamping die
Exact flat pattern
Five-pointed star
Exact flat pattern
Spiral staircase
Exact flat pattern
Box and tray
Exact flat pattern
Tools that work in all subjects
Whatever your programme is called, these tools calculate the same — Pythagoras, area, percentages and units are not tied to one trade.
- Pythagorasa² + b² = c²Find the missing side, set out a right angle, check whether a room is square, and find the space diagonal.
- Area and perimeterm²Rectangle, triangle, trapezium, circle and composite shapes — area and perimeter.
- Volume and surface aream³ · lBox, cylinder, cone, sphere, pyramid, prism, pipe and frustum — also in litres.
- Percent%Percentage of, how many per cent, percentage change, discount and VAT.
- Scale and ratios1 : 50From drawing to reality, area and volume to scale, the rule of three and dividing in a ratio.
- Unit convertermm ↔ mFrom mm to km, Pa to bar and kB to GB — with the unit staircase.
- Time calculations and the clockt : minTime between two clock times, add time, and 1.75 h = 1 h 45 min for the timesheet.
- Slope and fall% · ° · 1:xFall from level to level, in per cent, per mille, degrees and mm per metre — and the height difference.
- Material consumption including wastem² + %Boards, paint, battens at c/c spacing and packs — for a composite surface or a whole room, with waste.