408-8649 Datasheet, PDF (6/7 Pages) Tyco Electronics – This instruction sheet covers Die Packages used in PCB Singulation systems.

PCB Singulation Systems Die Packages
408-8649
6. After grinding the die bushings, use a depth
micrometer to measure and record the dimension
in the Die Repair and Sharpening Log (found in the
die package documentation package). Measure
from the face of the die bushings to the face of the
lower assembly (die block). Record this number in
the Die Repair and Sharpening Log under bushing
head thickness. Subtract this number from the
previous entry to determine how much material has
been removed. See Figure 11.
C. Stop Block Spacers
1. Remove the screws securing the stop block
assemblies to the lower assembly.
Each stop block assembly consists of a shoulder
screw, stop block spacer, hex stop block, and
spring, as shown in Figure 12.
2. Before sharpening the stop block spacers, be
sure to measure the height of the spacers. The
dimension should be the same as those listed in
the Die Repair and Sharpening Log. If the
dimensions are not the same as those in the Die
Repair and Sharpening Log, refer to the die
package top assembly drawing for starting
dimensions.
NOTE
i
The amount of material removed from the
perforators and the amount of material removed
from the die bushings must equal the amount of
material that needs to be removed from the stop
block spacers.
Grinding
Wheel
Grinding Table/Magnet
Figure 11
Shoulder
Screw
Hex Stop
Block
Figure 12
Depth Micrometer
Stop Block
Spacer
Spacer Height
CAUTION
!
The stop block spacer is the ONLY part of the
stop block assembly that should be
sharpened/modified. NEVER REMOVE
MATERIAL FROM THE HEX STOP BLOCKS.
3. Place all four stop block spacers on a grinding
table. If necessary use safety blocks to hold the
spacers in place. See Figure 13.
4. Grind the stop block spacers. See Figure 13.
5. After grinding the stop block spacers, measure
and record the stop block spacer height in the Die
Repair and Sharpening Log.
D. Rest Pads
If all of the die bushings are sharpened, all of the hex
rest pads and pilot pin rest pads in the lower
assembly (die block) must be modified by the same
amount removed from the die bushings.
5.4. Die Package Re-Assembly
Replace all components in the order of disassembly,
exactly as they were located prior to disassembly. If
necessary, refer to the die package top assembly
drawing for correct component placement.
Grinding
Wheel
Stop Block
Spacer
Safety
Block
Grinding Table/Magnet
Figure 13
CAUTION
!
If components are NOT replaced exactly as they
were originally located, tooling damage could
occur.
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Tyco Electronics Corporation
A Rev