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An acceptable number of machines, tooling requirements and operation are assumed as tabulated in Tables 1-1 below.
Stages
Operation (for one set)
Machine or process
No. of M/Cs or tool sets required

A
CNC punch inner and outer base plates for heatsink
CNC punch
1

B
Remove metal components from punched sheet and deburr
Grinding and finishing equipment
1

C
Bend all metal sections required for 1 heatsink case
CNC Hydraulic bender
1

D
Drilling of hole for motor intrusion
Drilling m/c with drill bit size 35 dia and counterbore 26.25 dia
1

E
Cutting of grooves along heatsink plate case
Turning m/c with abrasive cutoff saws
1



Fig. 1-2 shows the machine sequence and layout of the entire machining operation of heatsink and grooves. This sequence is the representation of the machine layout per machining line and is referenced to the Table 1-1.

35 DESIGN FOR PRODUCTION CELL LAYOUT
Table 1-3 shows the complete manufacturing for motor, heatsink and base mounting pad. It also shows the assembling of the finished and supplied components to form the complete artefact. The number of machines required for each stage to assemble one complete artefact is drawn out The table 3 below shows the figures for such a production output of 2 cases per line per day.

Stages
Operation (for one set)
Machine or process
No. of M/Cs, tool sets or stations required

A
CNC punch inner and outer base plates for heatsink
CNC punch
1

B
Remove metal components from punched sheet and deburr
Grinding and finishing equipment
1

C
Bend all metal sections required for 1 heatsink case
CNC Hydraulic bender
1

D
Drilling of hole for motor intrusion
Drilling m/c with drill bit size 35 dia and counterbore 26.25 dia
1

E
Cutting of grooves along heatsink plate case
Turning m/c with abrasive cutoff saws
1

F
Inspection of motor - fully assembled from sub-contractor
Motor test rig and magnifying glass for visual inspection
1

G
Assemble of all components
Basic hand tools or robots
1

H
Insert motor and heatsink into position
Basic hand tools or robots
1

I
Inspection of assembled artefact part
Magnifying glass only
1

J
Pack into boxes and onto pallet
Boxes, tape, pallets and shrink wrap
-



The above table indicates that stages A-E comprises of the machining operations for heatsink. Stages F-J are the manual assembly operations of the motor, heatsink and mounting pad. The motor is assumed to be fully assembled and are bought from a third-party sub-contractor. Quality inspections are also done for the motor and after assembly at this stage.