Can screwdriving be automated?

Screwdriving automates well and fails on feeder reliability, not on the robot. Ask about the feeder before you ask about the arm.

Free, about two minutes, no phone number. You get an honest no when a robot is the wrong answer.

What the job actually is

An operator drives a series of fasteners into an assembly, often with a torque requirement and sometimes with documentation. Long fastener runs cause wrist strain and quality escapes when someone misses one.

Signs it is worth automating

• Units carry a meaningful number of fasteners each.
• Torque needs to be documented for a customer or a standard.
• You have wrist and hand complaints from manual drivers.
• Missed or under torqued fasteners are causing rework or escapes.

What the cell looks like

A 3 to 10 kg class arm with a screwdriving end effector and a screw feeder, over a fixture that locates the part. Torque control and recording usually come from the driver system rather than the robot.

This is one job inside a bigger family. The assembly and screwdriving guide covers the equipment classes, the cost ranges, and the disqualifiers for all of it.

When the answer is no

• Low volume mixed assembly where a person with a smart driver is faster and far cheaper.
• Parts cannot be fixtured repeatably.
• Your fastener or presentation is one no feeder handles reliably, and nobody has tested it.
• Product design is still changing, so fixtures and paths will churn.

What an engineer has to verify

• Feeder reliability tested on your exact fastener, not a similar one.
• Fastener count, sizes and types per unit.
• Torque specification and whether traceability must be recorded per unit.
• Part fixturing and location repeatability.
• What the cell does when a screw cross threads or a feed fails.

Safety is not on that list because it is not ours to determine. Cell design, guarding and the risk assessment belong to an independent certified integrator, every time.

What the research says

Peer reviewed work from our research library on this application. These are studies of other plants and other settings, not a prediction about yours, and the excerpts are the authors' own words. Every title links to the source so you can check us.

• Design of Human-Centered Collaborative Assembly Workstations for the Improvement of Operators’ Physical Ergonomics and Production Efficiency: A Case Study Luca Gualtieri et al. (2020), Sustainability

  From the abstract: “Industrial collaborative robotics is one of the main enabling technologies of Industry 4.0.”

• Friend or Foe? Understanding Assembly Workers’ Acceptance of Human-robot Collaboration Antonia Meißner et al. (2020), ACM Transactions on Human-Robot Interaction

  From the abstract: “Due to rising demands on productivity and flexibility, assembly processes are currently experiencing a substantial transformation.”

• Balancing collaborative human-robot assembly lines to optimise cycle time and ergonomic risk Kathryn E. Stecke and Mahdi Mokhtarzadeh (2021), International Journal of Production Research

  From the abstract: “Human-robot collaboration can enhance productivity of production lines and reduce human ergonomic risk.”

• Safety Design and Development of a Human-Robot Collaboration Assembly Process in the Automotive Industry Sahar Heydaryan et al. (2018), Applied Sciences

  From the abstract: “Human-robot collaboration (HRC) is a complex procedure in manufacturing due to the problems posed by compatibility and operational safety among humans and robots, and by task definitions among them in a collaborative order.”

• Development and validation of guidelines for safety in human-robot collaborative assembly systems Luca Gualtieri et al. (2021), Computers & Industrial Engineering

  From the abstract: “Industrial collaborative robotics is one of the most promising technologies of Industry 4.0.”

The full assembly, screwdriving and fastening shelf has 14 works.

Someone has already done this

See it run

Two clips of this job actually running, from two different manufacturers. Both are the makers' own marketing footage, showing a cell under good conditions with a part it was set up for, so watch them for what the motion looks like rather than as evidence of what your rate would be.