« Back To Tech papers
Euresys Logo

Component Supplier

Member Since 1999

LEARN MORE

Euresys is a leading and innovative high-tech company, designer and provider of image and video acquisition components, frame grabbers, FPGA IP cores and image processing software. Euresys is active in the computer vision, machine vision, factory automation and medical imaging. The company’s image acquisition expertise covers analog and digital video acquisition, FPGA programming, high-frequency electronics, video compression and also camera cont

Content Filed Under:

Industry:
N/A

Application:
N/A

Precision machining with 'Vision in the Loop'

POSTED 06/08/2023

 Precision machining is often associated with lengthy, highly sensitive, iterative processes, sometime prone to non converging accuracy.
 

DIAMOND TURNING WITH DYNAMIC PART INDEXING®

For about 10 years, Wielandts UPMT have mastered precision diamond turning to reach sub-micron accuracy for the production of lens masters (incl. freeform) for various industries such as Automotive, Medical imagery, Virtual/Augmented Reality, …
Strong of their expertise, they have developed and patented a unique Dynamic Part Indexing (DPI®) technology allowing the precise manufacturing of high-density arrays of lenses on a single master without compromising on the individual lens nor complete array accuracy.

This unique system brings the best ultra-precision machining technique, i.e. on-axis diamond turning, to produce arrays of all kinds. By shifting the workpiece with respect to the main spindle in a dynamic, balanced and ultra-precise way, each surface of an array can be machined sequentially.

With this technique, the outstanding

  • form accuracy,
  • surface finish
  • and geometric freedom

achieved by ultra-precision diamond turning on a single on-axis lens can be obtained on each lens of each array of a fully populated master. It results in outstanding product consistency and production efficiency.

 

(LEFT) DPI Lens array master; (CENTER) DPI Lens array; (RIGHT) Fully populated master with several lens arrays

INTEGRATING MACHINE VISION IN THE MANUFACTURING PROCESS

Beyond the intrinsic performance of the technology (freeform, low surface error, true 100% fill factor,…) Wielandts UPMT make use of the Euresys Open eVision Libraries to introduce “Vision-in-the-loop” to their process and shorten the control-command cycle of their automated production facility.

Wielandts UPMT have picked among the wide range of Euresys libraries, the ones offering the possibility to capture, analyze and return the necessary parameters to the machining process in order to dynamically and on the fly drive the manufacturing process iterations.

examples of Open eVision Libraries functions

Open by nature, the selected Open eVision Libraries can be used individually or combined to achieve a compounded function. Independent from the image sources (frame grabbers, GigE Vision camera, USB3 Vision camera, …) and processing platform (Windows™ or Linux™, x86 or ARM™), they are easy to learn, tune and use.

PRECISION AND HIGH SPEED ARE COMPATIBLE

These libraries have allowed Wielandts UPMT to efficiently integrate machine vision functions into their proprietary control software and hardware, closing the loop in a specific and efficient fashion in terms of visual resolution and processing time.

More on : Euresys - News and articles about Euresys's products in embedded and machine vision.