When to automate an assembly step
A practical test for whether a manual step is worth automating — and the signals that it is not, yet.
An assembly step is worth automating when it is repetitive, when its quality depends on operator consistency, and when the volume is stable enough that fixturing will not be redesigned every quarter. Volume alone is a poor predictor; repeatability and rework rate are better ones.
Signals it is ready
The same motion is repeated many times per board.
Quality varies measurably by operator or by shift.
Rework is a recurring line item rather than an exception.
The product will exist in roughly this form for long enough to amortise fixturing.
Signals it is not, yet
The design is still changing shape month to month.
Volume is genuinely low and the step is quick.
The real bottleneck is somewhere else — automating a non-bottleneck buys nothing.
The cheapest way to find out
Run the step on a machine before buying one. Measured cycle time and first-pass yield on your own part settle the argument faster than any business case built on estimates.
Commonly asked
What volume justifies automation?
There is no threshold that holds across applications. A low-volume board with forty difficult joints can justify a cell that a high-volume board with four joints cannot. Count joints and rework, not units.
Get the answer for your actual part
A guide can only take you so far. Send us the board, the fluid or the fastener and we will run it, film it, and come back with cycle times and a quote.
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