You are here: NEV Parts Riveting Case: How Blind Riveting of Battery Boxes and Structural Parts Raises Efficiency - CHANRUI
Domestic new-energy vehicle manufacturing bases are heavily automated, yet many component makers and tier-2 suppliers still rivet by hand. Taking an anonymized case, this article explains the efficiency logic of moving battery boxes and structural parts over to automatic blind riveting.
I. Riveting pain points for component makers
Battery boxes, battery-pack accessories, seat frames and body stampings carry many points and high consistency requirements; manual blind riveting runs a high risk of night-shift missed rivets, and data cannot be traced, making it hard to pass OEM system audits; aluminum parts also need deformation and sealing control.
II. Retrofit solution and results
| Metric | Prior to Retrofit | Post-Retrofit |
|---|---|---|
| Missed rivets at critical points | Visual inspection, occasional at night shift | Point counting with incomplete prompts, down to zero |
| Labor per line | 4 riveting workers | 2 tending the machine + patrol inspection |
| Traceability of data | No record keeping | IO to PLC/MES, points queryable |
| Aluminum part quality | Inconsistent deformation and scratches | Fixture + scratch-proof nozzle, better consistency |
III. Sealing and pulling-force testing
Battery boxes use a combination of structural adhesive, seal rings and blind rivets/rivet nuts; during the trial, overall pull-out and sealing verification is carried out by section and plate thickness; mass-production trays are advised to use robotic/gantry stations, and seat frames etc. use in-line counting dual-gun models. For the region see, for the industry refer toNEV & Auto Parts Riveting。
After adopting a robotic riveting station and an in-line counting dual-gun riveting machine, missed rivets at key points of battery boxes and seat frames fell to zero, data became traceable, single-line labor dropped by about half, and the plant passed the OEM system audit and picked up new orders.
IV. Advice for component suppliers
Pilot first at the most critical, most strictly audited station, bring a machine for on-site sampling to obtain cycle, pulling-force and missed-rivet data, then roll out in batches to avoid the risk of a one-off large investment.
FAQ
In-line and robotic models provide IO signals and counting data, and can tie into PLC/MES per the customer's system for error-proof traceability.
By means of a combination of sealing rivets, rivet nuts, structural adhesive and seal rings, with sealing verification per the battery-box process during the trial.
Auto-parts customers nationwide: book an automotive-grade trial
Send battery-box or structural-part drawings and fastener specs, and an engineer will measure on-site; consultation hotline +86 13268883882.
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