EIS Vision: From PDF Drawing to Measured, True-to-Scale DXF

EIS Vision · Part of the EIS suite for Extrusionsim · Engineering Software & CAD Automation

The Problem

Extrusion quotes usually start with a PDF. Someone emails a profile drawing, and before anyone can price it, a draughtsman has to redraw it in CAD just to find out what values it has — area, perimeters, die type, complexity. That is an hour or two in a conventional CAD package, repeated for every enquiry, with the scale guessed from a dimension line.

The PDF already contains the geometry. It is just locked in a format nobody can measure.

What It Does

EIS Vision is built for aluminium extruders. Upload a PDF or DXF of a profile, set the scale by clicking two points whose real distance you know, and it returns the figures a quote is built on — in seconds, not hours:

{
  "dieType": "PORTHOLE",
  "area": 694,
  "outsidePerimeter": 546,
  "insidePerimeter": 522,
  "circumference": 167.69,
  "mandrels": 1,
  "complexity": "E"
}

• Die type & mandrels — porthole or flat, and how many mandrels the holes imply.
• Area — the cross-section in mm², with holes subtracted.
• Outside & inside perimeter — true arc length, so fillets and bores are exact.
• Circumscribing circle — the smallest circle enclosing the profile, for press and container fit.
• Complexity — a die difficulty score, graded A–E.

Weight per metre follows from the area, and a clean DXF in millimetres comes out alongside the numbers, ready for CAM or CAD at true size.

Only the Profile

Title blocks, dimensions, text and leader lines never make it through, and anything that survives can be erased with a click before export. What remains is the profile outline — with real arcs and circles rebuilt from the PDF's curves, loose fragments joined into closed contours, and the duplicated outlines that exporters leave behind removed.

Built to Be Trusted

The measurements come from the same geometry as the exported DXF, so the figures always describe the file you downloaded — never a second, separate reading of the drawing. Arc lengths and areas are computed exactly, so a bore measures πr² no matter how the PDF drew it. If a contour does not close, the result says so instead of quietly reporting an area with a missing boundary.

The Impact

What used to be an hour of redrawing per enquiry is now an upload and two clicks. The quote comes back the same day, the geometry is CAD-ready rather than approximate, and every profile is measured by the same rules, every time.