Automatic visual inspection & oiling of slats

Test stations by AUTFORCE

Quality assurance and important production step in one.
The multi-stage testing and oiling system ensures that
we provide our customers with a consistent process flow.

The project

Once again, we have met the complex requirements of our customers. The aim of the project was the fully automated oiling and testing of slats. A completely new type of testing and oiling system was developed for this purpose, which offers numerous advantages and maximum convenience in operation and maintenance.The lamellas, which are discharged from a heating press in two rows, are first cooled and then optically inspected on both sides using camera systems. Any NOK parts that emerge during the tests are ejected separately. The slats are then optionally oiled and stacked in a multi-stack magazine. The system was deliberately designed without a handling system or rotary indexing systems in order to ensure the smoothest possible process flow. A continuous flow of material is generated by connecting the processes in series.


The slats are tested for the following characteristics:

  • Detection of paint residues (e.g. marking paint) on the segments
  • Detection of missing segments, as well as incorrectly stamped segments.
  • Detection of surface defects (adhesive, color stains, punching defects) from an area of 10mm²
  • Detection of missing holes
  • Checking the hammer head width (measuring accuracy +/- 0.1 mm)
  • Testing for coating stains (measuring accuracy +/- 0.1 mm)
  • Checking the segment thickness (3D measurement)
  • Checking for pressure points (3D measurement)
image processing software quality control

Your advantages at a glance

Quality assurance

Consistently high quality thanks to fully automatic in-line quality control of a wide variety of surfaces.

Process reliability

Automatic type detection & high autonomy time offer optimum process reliability.

Low noise development

The continuous process ensures particularly low noise levels.

Return on investment

The testing system guarantees a high output and a rapid return on investment (ROI).

Step 1

The two-track cooling section takes the lamellas from the conveyor belt of the heating press, cools them down and transfers them to the conveyor system in the camera inspection area. The parts are cooled using ambient air, but a cooling section would also be possible as an option.

Cooling of the slats

Visual inspection of the slats

Step 2

The camera systems consist of a color matrix camera and diffuse incident light illumination (dome light). The slats are picked up in a continuous process (approx. 200 mm/sec). While the first side of the component is being evaluated, the slat is moved on to the second camera station and rotated 180 degrees to check the second side of the component.

Step 3

The camera test is followed by the gap gauge test. Here, the slats are fed into a chute inclined at 45 degrees. Two hardened and ground flat plates (gap gauge plates) form a defined gap. All parts that pass the gap gauge during “free” sliding are IO parts and are passed on by the deflector at the end of the chute. Any slats that get caught under the gap gauge are fed directly into a reject box by opening the gap gauge completely.

Gap gauge test

Do you also need a test bench?

AUTFORCE is a specialist in automated quality inspection. When it comes to automating manual or visual quality inspections and relieving your employees in this area, we are the right contact. Get in touch with us. Together we will find the best solution for your project!

Christian Hanbauer
Head of Sales

+43 (664) 88 71 02 50

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