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Die Repair/ACAD

Die Repair/ACAD

Die Repair/ACAD

(OP)
I need to draw some of our dies, and I have no die design experience.  The dies are small--used in 20-45 ton presses to form copper or steel.  My question:  What is the best way to measure the configuration for the drafter, i.e center-line dimensions for the punches, guides, etc.?  Cost is a huge factor here.  We are a small company that cannot afford automated equipment.  I am interested in using tradition tools to achieve the precision we need.  My idea is to lay-out from an arbitrary reference point using a protractor and scale...what do I need to find the true centers of the holes?

Thanks in advance for the help.

RE: Die Repair/ACAD

Since you cannot afford a CMM Coordinate Measuring Machine, I suggest that you get your self a surface plate or reasonable facsimile.  In  pinch I have used a large faceplate from a lathe used as a semi precise surface plate.  You should get yourself a vernier height gauge, and a digital vernier.  Create a datum edge on two sides of the die for X-Y location.  Locate the edges of the holes you referred to, and record them.  Double check the center to center distances with the Vernier.  Machining is all about double-triple checking your results.

P.ENG/Machinist

RE: Die Repair/ACAD

I hope I don't missunderstood your question. As I understod you have a noumber of dies or holes and you whant the coordinates. Set up your part in a milling machine with digital scales and use a dialgauge to find the position of the holes. If you don't have the equipment I guess it's cheaper to ask any workshop to indicate it for you than to buy the equipment.

Leffe

RE: Die Repair/ACAD

let me have a look at the piece you intend to make and i'll see if i can give you a hand

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