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GullySystem
A practical guide

Tooling life tracker template for press tools and plastic moulds

Ganesh HSStrategy and Technology, GullySystem
Practical advice · 5 min read

In this guide 6 sections
The short answer

A tooling life tracker logs one line per tool: its identity, total strokes or shots, last sharpening or repair, and the limit that triggers work. Set amber before the limit. Red sits at the limit, so the tool room books maintenance well before dimensions drift out of tolerance and the customer finds burrs in the box.

What the tracker holds for each tool

Give every tool a permanent number stamped on the body and repeated in the tracker, then add the part number, customer, press and shelf location. Staff find any tool in a minute.

Record the type, because a progressive die, a compound die and a plastic mould each wear in a different place and at a different rate. Punches and die buttons lose edge. Moulds suffer at the parting line, the vents, the ejector pins and the gate, where flash and short shots first appear.

Then add the counters. Count strokes for press tools and shots for moulds, then add the cavity count so that shots convert into parts made on that run.

  • Tool number, part number and customer
  • Type: progressive, compound, draw or mould
  • Cavities and press or machine tonnage
  • Storage location and current status

Read the counter, never estimate it

Read the machine counter at the end of each run and write it on the run sheet, never estimating from the parts made. Scrap, trial parts and setup strokes all wear the tool, so every one of them belongs in the total, even the ones nobody ships.

Enter it the same shift. A count updated at month-end is a count nobody trusts, so the tracker should show total life, life since sharpening and life since major repair as separate columns.

If a counter fails, mark the gap, estimate it from the run sheets and label the figure estimated so nobody mistakes it for a reading.

Set trigger points before the dimension drifts

Pick a life limit for each tool from its history: for a press tool, the strokes between sharpenings that kept burr height within the drawing. For a mould, use the shots between cleaning, venting and polishing jobs that kept flash and short shots off the part, measured on the last three runs.

Set two flags. Amber appears when the remaining life covers fewer than two planned runs, and red appears at the limit set from the tool’s own history. Amber books the tool room. Red stops the tool being issued. A toolmaker must check it first.

Pair the count with a measurement. A first-off check of the key dimension or burr height can pull the flag forward when wear is faster than the count suggests.

  • Sharpening interval and burr height limit
  • Cleaning, venting and polishing interval for moulds
  • Spring, ejector and guide pin replacement points
  • Key dimension check at first-off
  • Amber and red flags tied to planned runs

Log every repair and what it cost the schedule

Add the downtime to each line. Each sharpening, weld repair, regrind or polish is a line in the tool history with the date, the work done, who did it and the grind amount. Add the count at that point. Grinding takes steel away, and the grind amounts on record show how much steel is left before the die must be rebuilt.

If the tool was out for four days, which jobs waited, and would a spare die set or earlier maintenance have saved them?

Keep failure notes in plain words such as cracked punch, flash at parting line and galled draw radius, because after a year they reveal patterns by part and press.

From sheet to system

A spreadsheet works for a few dozen tools if one person updates it daily, but it breaks when counts arrive late or two copies circulate. The planner never sees the red tool.

Software lets the planner see tool status when scheduling, tells the tool room which tools are amber, and carries the history with the tool across customers and part revisions. It can also raise a request for a replacement insert, a spare punch or a second tool when the red flag lands.

Start with your five busiest tools. Fill the template this week, then check whether the counts match the run sheets and whether anyone disagrees with the flags.

Tool life log

One page covers a single tool. The top block holds tool number, part, customer, type and cavities, and a middle table logs date, run number, strokes or shots, total life and life since service. A lower table records each repair with work done, grind amount, downtime and tester, and a side block sets amber and red limits.

Open a blank worksheet to print

Questions owners ask

How do I choose the life limit for a new tool?

Start with the toolmaker’s guidance, then adjust after the first three service events, when you can see how many strokes or shots kept the dimension in tolerance.

Should scrap strokes be counted?

Yes, count scrap strokes. Every stroke and every shot wears the tool, whether the part is good or not, so read the machine counter and not the parts shipped.

What is the difference between life and life since service?

Total life shows when the tool nears the end of its use, and life since service shows when the next sharpening or cleaning falls due. Track both.

Who should own the tracker?

The tool room supervisor should own it. Press and moulding operators enter the counts, and the planner reads the status when scheduling jobs for the week, so a red tool never reaches a press by surprise.

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