title: “Collaborative Robot Engine Bolt Fastening: Oil-Pan & Vacuum-Pump Final Torque, Fully Automated”
slug: collaborative-robot-engine-bolt-fastening-oil-pan-vacuum-pump-video
meta_description: “How a 10 kg six-axis collaborative robot automates final bolt tightening on engine oil pans and vacuum pumps — ±0.03 mm repeatability, 98% yield, 50% faster cycle, traceable torque. Video + breakdown.”
primary_keyword: collaborative robot bolt tightening
keywords:
- collaborative robot screw fastening
- automated engine bolt tightening
- robotic torque gun station
- automatic socket changing
- powertrain assembly automation
target_site: evsint.com
og_image: og.jpg
youtube_id: “{{YOUTUBE_ID_EN}}”
A 10 kg six-axis collaborative robot with a servo torque gun and an automatic socket-changing station performs final bolt tightening on engine oil pans and vacuum pumps with ±0.03 mm repeatability, reaching 98% yield, replacing two operators per station, and cutting line cycle time by 50% — with every torque value logged and traceable.
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At a glance
| Spec | Value |
|---|---|
| Robot | 10 kg payload, 6-axis collaborative robot |
| End-effector | Servo torque gun + automatic socket changer |
| Repeatability | ±0.03 mm |
| Stations shown | Oil-pan tightening · vacuum-pump / blow-feed screw fastening |
| Yield | 98% |
| Cycle-time gain | +50% |
| Labor | 2 operators replaced per station (day + night shift) |
| Traceability | Per-bolt torque logged in real time |
The problem: manual torque guns don’t scale
Final bolt tightening is one of the most safety-critical steps in engine assembly. Done manually, it carries three structural problems:
- Constant socket changes. A single engine carries dozens of bolts in different sizes, so an operator has to swap sockets by hand throughout the cycle — slow and error-prone.
- Operator fatigue. Long standing shifts with a heavy torque gun create real physical strain and inconsistent output across a day.
- Torque consistency. When tightening depends on human feel, a missed or under-torqued bolt can slip through — and on an engine, that is a direct safety risk.
The solution: one cobot, automatic socket change, full traceability
The cell replaces the manual station with a 10 kg six-axis collaborative robot carrying a servo torque gun, paired with an automatic socket-changing platform. Socket selection, positioning, and final torque all run without human intervention, and each fastening event is recorded.
Station 1 — Oil-pan final tightening
The cobot steps through the oil-pan bolt pattern in sequence at ±0.03 mm repeatability. Every bolt’s torque is captured in real time, giving a complete, auditable quality record for each engine.
Station 2 — Vacuum-pump & blow-feed screw fastening
The same robot switches to the matching socket, blow-feeds each screw into position, and tightens. One cell handles multiple parts and mixed models — no second station required.
The results
- 98% yield, locked in by full monitoring and per-bolt logging.
- +50% line cycle time, by removing manual socket changes and wait.
- 2 operators replaced per station, with continuous day- and night-shift running.
- Stable capacity through seasonal demand swings, because the cell runs unmanned.
Flexible changeover
New engine variants need only a program edit and a socket swap — no line rebuild. Drag-to-teach programming and standardized tooling interfaces make the cell easy to redeploy across small batches and mixed models.
Full transcript
- Final bolt tightening on an engine — still done by hand, one bolt at a time with a torque gun?
- Three pain points of manual fastening: dozens of different bolts per engine mean constant manual socket swaps; long standing shifts bring heavy fatigue; and torque by feel makes consistency hard — a missed or wrong bolt is a safety risk.
- This line uses a 10 kg six-axis collaborative robot with a servo torque gun at the wrist, plus an automatic socket-changing station. Socket swap, positioning and tightening all run automatically.
- Station one, oil-pan final tightening: the cobot steps through the bolt pattern at ±0.03 mm repeatability, and every bolt’s torque is logged in real time and fully traceable.
- Station two, vacuum-pump and blow-feed screw fastening: the same robot switches sockets, blow-feeds each screw, then tightens — flexible across small batches and mixed models.
- Results: running both shifts, one station replaces two operators; with full monitoring, yield reaches 98% and cycle time improves by 50%.
- Changeover is simple: drag-to-teach plus standardized tooling means a new model needs only a program edit and a socket swap.
- From oil pan to vacuum pump, collaborative robots turn engine fastening into an unmanned, traceable, flexible standard process.
FAQ
Can one robot handle different bolt types? Yes. With an automatic socket-changing station, the cobot swaps sockets mid-cycle, so a single cell covers the mix of bolts on one engine.
Is the torque traceable for quality audits? Every fastening event is logged in real time, producing a per-bolt record for each unit.
How hard is it to add a new engine model? A program edit and a socket change — no mechanical line rebuild — thanks to drag-to-teach and standardized tooling interfaces.
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