2. What is SMED
A particular setup that we must make before beginning a next set
of operation .
The TOTAL time from LAST GOOD piece to FIRST GOOD piece
3. Why do we need SMED
Increased Equipment Effectiveness
OEE %
Advantages:
- Reduced lead-time
- Less work-in-process
- Less transport
- Less space needed
- Less cash needed
Increased OEE
Potential Problems:
-Frequent change-overs
- Machine breakdowns
- Late Deliveries
- Customer pressure
6. STEPS FOR IMPROVING CHANGEOVER
Changeover Begins and Ends with 5S
Discard: If in doubt, throw it out.
Indicate: Put up signs showing exactly where a
particular thing belongs.
Color-code for orderliness.
Consolidate/Eliminate tools for orderliness.
Specialize: Develop specialized carts, tools, etc to improve efficiency.
7. STEP FOR IMPROVING CHANGEOVER
Change Internal Changeover to External Changeover
•Analyze current changeover operations.
•Ask “Why?” again and again: See if an internal C/O operation can be changed
to an external one.
8. STEP FOR IMPROVING CHANGEOVER
Bolts are our Enemies.
•Take the “boltless” approach: Consider substitutes like knock
pins, fasteners with levers on top, etc.
•Use fewer bolts: See whether the number of bolts can be
reduced.
•Make bolts shorter: Only the last turn of the bolt or screw does
the actual fastening and only the first turn does the loosening.
9. STEP FOR IMPROVING CHANGEOVER
If you have to use your Hands, make sure
your Feet stay put.
Specialize: Keep all tools within arm’s reach during the changeover operation.
Keep all switches close at hand: Move switches closer, even if that means
modifying the equipment.
Establish parallel operations: Use several workers if necessary.
10. STEP FOR IMPROVING CHANGEOVER
Don’t Rely on Special Fine-Tuning Skills
Abolish fine-tuning: Give up the notion that fine tuning is
necessary. Standardize the work and make it simple
11. STEP FOR IMPROVING CHANGEOVER
Standards are Standard; they are
not Flexible.
Avoid making position adjustments: Use stoppers, notches,
centering cross lines, etc.
Avoid making height adjustments: Make the height of the
component uniform by using spacer blocks, uniform bases, etc.
