Timing chart maker & cycle time calculator
The tool schedules each step from its selected start mode, derives every step duration from an entered time or a trapezoidal motion profile, then takes the latest end point as the cycle time.
How to use
- Enter the calculation conditions
Enter the dimensions, loads, speeds or operating conditions requested by the form.
- Run the calculation
The tool applies the formulas shown on this page to the entered values.
- Review the result
Review the resulting specification and checks, then verify them against the cited source, current standard and real operating conditions before use.
Core formula
t_move = L/v + v/a (trapezoid, 2·v²/(2a) ≤ L); t_move = 2·√(L/a) (triangle); Tact = max(end_i)
Example using default values
L = 100 mm, v = 300 mm/s, a = 3 m/s² → t = 100/300 + 300/3000 = 0.433 s
Source: Trapezoidal motion profile (運転パターン) per Oriental Motor and THK technical calculation; timing-chart (タイムチャート) practice in machine sequence design.
Frequently asked questions
What is the critical path on the timing chart?
It is the chain of linked steps that sets the latest end point. Shortening a step on that chain reduces the cycle time by the same amount; shortening a step off the chain leaves the cycle time unchanged.
How is a move time derived from stroke and speed?
With a trapezoidal profile: if the acceleration and deceleration distances together fit inside the stroke, t = L/v + v/a; if they do not, the axis never reaches the set speed and t = 2·√(L/a). Leaving acceleration blank gives t = L/v.
Can the result replace measurement on the real machine?
No. The result is a theoretical cycle time from the entered data; PLC scan time, valve and air delay, signal handshake, residual vibration and real variation are not included. Measure on the machine before committing to a throughput figure.
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