Page 140 - TPM A Route to World-Class Performance

Applying the TPM irnprovemmf plan 119

L101: 4.12 min including loading
M201: 3 min including loading
M202: 8.5 min including loading
As can be seen from the data in Figure 6.3, the lathe is running three slufts
five days per week; the miller M201 is running two shifts, five days; and the
miller M202 is running two shifts plus overtime. Some cover is provided for
the machines during the shifts, but there are still times when the machines
cannot be m. These planned stoppages are one of the reasons for the difference
between them.
There are some tool changes. Sometimes this is done by maintenance outside
production time. Usually some production time is lost owing to tool breakages.
There seem to be occasional quality problems where much of the output
has to be reworked to remove burrs. However, mostly there are few quality
problems.
Department 50’s financial data are shown in Figure 6.4. The company’s
shopfloor logistics are given in Figure 6.5.

6.3 TPM presentation and plan
The equipment chosen for the pilot project is the M201 milling machine.
The TPM presentation for the M201 team had the following headings:
Introduction
Plan
Equipment description
0 Equipment history
OEE assessment
The six losses
0 Criticality assessment
Condition appraisal
Refurbishment
Future asset care
Best practice routines
Problems/improvements
Lmplementation plan
Concluding remarks
The schedule for the project is shown in Figure 6.6.
As discussed in earlier chapters, the TPM improvement plan has the
following three cycles and nine steps.

Measurement cycle
0 Decide what to record and monitor
Decide the OEE measures: best of best, world class
0 Assess the six losses