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How many rivets can an automatic riveting machine drive per minute? Riveting cycle and capacity calculation method
"How many rivets can an automatic riveting machine drive per minute?" is a high-frequency question. BISUDI common models run at a riveting cycle of about 80 cycles/minute under standard conditions, i.e. about 4800 theoretical points/hour, but this is a reference value for continuous machine action; for a specific product you must also deduct workpiece pick-and-place, repositioning and changeover time. This article explains how real capacity is calculated and what factors slow the cycle.
I. Difference between rated cycle and real capacity
The rated cycle is the time of a single "feed - insert - pull-rivet - withdraw" loop, about 0.7-0.8 seconds/cycle (about 80 cycles/minute). Real per-piece work time also adds auxiliary time for loading/unloading, workpiece flipping and point-to-point movement, so capacity calculation should be based on the measured cycle of one complete workpiece rather than simply multiplying 80 by working minutes.
| Basis | Value (reference) | Note |
|---|---|---|
| Single riveting cycle | About 0.7-0.8 s/rivet (about 80/minute) | Under standard rivets and standard feed distance |
| Theoretical points/hour | About 4800 points | Excluding loading and repositioning |
| Real effective output | Subject to on-site measurement | Including pick-and-place, flipping, changeover and other auxiliary time |
| Dual-gun one-out-of-two | Two guns run in parallel, efficiency nearly doubled | Suitable for standardized shells with dense points |
II. Four factors affecting speed
Rivet specification.The longer the rivet and the larger the head diameter, the longer sorting and feeding take; stainless and structural rivets have a larger pull-riveting stroke, increasing per-rivet time.
Feed distance and tubing.The distance between main unit and gun body, and the feed tube length and curvature affect feeding time; when laying out the station, minimize tubing and sharp bends.
Equipment form.The handheld gun's cycle is affected by operator movement speed; fixed/fixture-positioned models have the highest consistency; the one-out-of-two dual gun runs two guns in parallel, suitable for simultaneous work on two columns of points on the same workpiece; robot cells have a stable cycle and can run unattended and continuously.
Feeding stability.Jams and missed nails cause stoppage and rework, and real efficiency depends on "stable speed" rather than peak speed. BISUDI provides automatic replenishment and smart correction, passing a 30,000-cycle continuous test without jamming, with a long-term fault rate of about 0.3%.
III. How much faster than manual work
Manual riveting requires picking, inserting, aligning and then pull-riveting, taking several seconds per rivet with unstable quality; on an automatic machine the feed system delivers the nail directly to the gun nozzle and the worker only aligns and pulls the trigger, so one machine replaces about 3 workers and overall efficiency is up to about 3 times. More importantly, the cycle is stable and independent of skilled or temp workers, making peak-season capacity predictable.
IV. Use trial data for capacity decisions
At the line planning stage, estimate per-piece work time as "points per piece / measured cycle + auxiliary time", then combine the shift system to calculate daily capacity and the number of machines needed. The BISUDI manufacturer can bring machines on site to time the customer's real rivets and workpieces, giving per-rivet cycle, per-piece work time and yield data, and then produce a solution and quotation accordingly, avoiding decisions based on advertised peaks.
V. How to accurately measure cycle and capacity on site
Planning a line with the peak speed in a brochure easily distorts reality; it is recommended to measure on site during the trial as follows, and the data can be used directly for machine count and payback calculation:
| Measurement Item | Method |
|---|---|
| Per-rivet cycle | Rivet 50-100 rivets consecutively, divide total time by rivet count and take the average |
| Per-piece work time | Actual time to complete one full workpiece (including pick-and-place, flipping, repositioning) |
| Yield | Count the proportion of missed rivets, thread stripping, scratches and unbroken mandrels |
| Operating rate | Share of actual running time after deducting changeover, replenishment and breaks |
| Daily capacity | Shift duration x operating rate / per-piece work time, then leave an appropriate margin |
It is recommended to measure two groups of data on the same workpiece - "skilled-worker manual" and "automatic machine" - and compare per-piece work time and yield differences; when a dual-gun solution exists, measure a third dual-gun group to judge the dual gun's real gain on that workpiece. BISUDI on-site trials record these data on site and form a written conclusion as the basis for solution and quotation.
Cycle FAQ
Speed FAQ
80/minute is a reference value for a single riveting loop, and real capacity includes loading and repositioning; the larger the rivets and the more scattered the points, the higher the per-piece time, which is normal.
The dual gun nearly doubles efficiency on workpieces with two symmetric, dense columns of points; if points are scattered or require frequent repositioning, the gain is discounted, so a trial comparison is recommended.
The robot's advantages are a stable cycle and unattended continuous work, suiting fixed-point large-batch workpieces; multi-variety small-batch production is more flexible and economical with handheld or fixed machines.
Rated values are mostly ideal single-loop values, and the real gap lies mainly in feed stability (jam stoppage), changeover time and human-machine coordination; timing a complete workpiece during a trial is more revealing than per-rivet speed.
Nationwide customers: send specs, get a solution and price range in 10 minutes
We can bring machines on site for timing, making capacity decisions with measured cycle and yield, consultation hotline +86 13556668682.
Further reading:Automatic Riveting Machine Buying Guide (Full) · Sheet Metal and Stainless Steel Processing Automation Efficiency Improvement · Automatic Riveting Machine Product Center
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