Indexer Workholding
There are a vast range of workholding capabilities for the speed indexer units.
This ranges from standard face plates through to pneumatic chucks and expanding
mandrels. PTG would be pleased to quote for any application.
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STD 125 Indexer
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Fitted with 3 Jaw Chuck
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Using fixture for Casting
|
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Fitted with 5C Collet Chuck
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As well as the methods shown here, the variation of possible workholding systems
is endless. PTG will advise on any application you may have.
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Manually Operated Tailstock
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As an additional benefits to the small CNC Machining Centre user is that as the indexer is relatively small and certainly cost effective compared with 'true' fourth axes. More than one indexer can be mounted on a machine table to give multiple component machining capability. On a multiple set up there is still only a need for one M code function to generate an index, a compact interface unit takes care of the required input and output signals. An example of this is shown below.
A Bridgeport VMC 800/22 Vertical Machining Centre fitted with a bank of four PTG 125 Indexers
PTG 125 Indexer General Data
|
|
|
| TYPE |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
| 125 |
198 |
225 |
125 |
100 |
155 |
15 |
170 |
95 |
40 |
6 |
| 200 |
400 |
380 |
200 |
180 |
230 |
16 |
246 |
190 |
85 |
6 |
|
| STANDARD
INDEX POSITIONS |
15,30,45,60,90,
DEGREES |
| INDEDXER
ROTATION |
COUNTER
CLOCKWISE |
| AIR
PRESSURE REQUIRED |
60
- 80 P.S.I. |
| CONCENTRICITY |
.008MM
TIR |
| ACCURACY |
+
/ - 1 MIN. OF ARC |
| ELECTRICAL
REQUIREMENTS |
24V
DC / 200 MA MAX |
| MINIMUM
INDEX (SPECIAL) |
5
DEGREES |
| SPECIAL
INDEX POSITIONS KITS |
AVAILABLE
UPON REQUEST |
| The
PTG Index Units can be fitted to any cnc vertical machining center which has
a spare 'M' code (M FIN). The end user is responsible for any jard
wiring and softward modifications that may be needed. |
Please note:
As the indexers are mechanically indexed it is preferable that all loads are evenly balanced about the centre.
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