recmd to mark steel part with changing lot code?

I'd like some suggestions on the best way to mark a lot code on stamped steel part. Its a drawn steel wheel half used to make a golf cart wheel. We need to put a code on the bare steel part indicating date of manf and the steel coil number it was made from. We will probably need to change the code a few times a shift since we change coils that often.

I was leaning toward a Telesis pin marking engraving device in a separate marking station with some kind of automated load/unload pick and place mechanism. A colleague suggests adding marking punches to the forming die. Can anyone suggest a tooling supplier of such a device that is quickly changeable, since we will have to change the coil number code about 3 times per shift.

Thanks in advance for any tips.

Doug Danielson

recmd to mark steel part with changing lot code?

Reply to
William Danielson
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We used to dot peen that kind of stuff, but you could make a punch insert up yerself easy enough.

I dont have any links to die stamps, but you might find this informative. You could make something like this but in male form.

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I've also made our own. A sleeve with the major markings, keyed in and a core pin in the center with a velour screw in the back and ridges to locate. I put an o-ring in-between the pin heel and the sleeve counterbore to hold it. There is a small screwdriver slot in the top of the pin to rotate until the markings line up.

HTH Bing

Reply to
Bing

Depending on how formal you want to mark the part you could use a code of marks ground on the stamping die which would appear on the stamped part or even get a stamp for the die.

John

Reply to
john

Gunner,

Thanks for those links, they are very applicable. Here are more detailed reqs of mine:

My reqs are:

Total Cycle time: 7 sec

1018 steel, .070 in thick matl code: 12345 5 digits long part # 12345678 8 digits long must print both on each part matl code will change 4 times per shift, at each coil change want to stamp bare steel, but have it readable after powder painting

Do you think I am better off with a separate marking station with an auto load/unload system, or should we try to fit low tech number wheels into the die like one of the vendors you showed me sells?

Thaks again for the good advice,

Doug Danielson

Reply to
William Danielson

Bing,

Thanks for the link to the cool date stamping die inserts.

Do you prefer the stamp in die to the, I suppose, external dot peening gadgets? I'm sure the stamps are cheaper, are there other reasons you prefer that approach.

Thanks,

Doug Danielson

Reply to
William Danielson

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