The exceptional versatility of the TB-DECO and vast kinematics available for the DECO machines allow the operators to perform very clever operations...
In this particular case, operation milling is impossible owing to the fragile nature of the part and because the number of tools for the DECO 10 limits machining facilities with tools working in counter-operation.
1. DESCRIPTION
Machining a part clamped in a counter-spindle with the miller on platen 2.
To machine the part below, it is impossible to mill the flats and slots as a main operation, because in this particular case, holding the part causes a problem.
On the other hand, it is possible to carry out turning and drilling as a main operation and then proceed with milling with the part in the counter-spindle and the cutters on platen 2.
In this example, the slot will be executed with a circular cutter mounted in position T21 and the flats will be executed with an end miller, in position T22.
To machine these two operations, position T24 (blank position) must be facing the guide bush to avoid any collision between the tools from platen 1 and those of platen 2.
The millers are positioned by axis X2 and the milling operations are executing by displacing (X4) the counter spindle.
2. POSITIONING THE MILLERS AND COUNTER-SPINDLE
3. TOOL CATALOGUE
For this particular example, 4 tools will have to be created:
We would like to point out that when machining with a circular miller or end miller, platen 2 will be in the following position: T24 facing the guide bush.
This is why it is necessary to create 2 fictitious tools in position T24.
The first tool will be used when working with the circular miller and the second, when working with the end miller.
Comment: For points a) and b), only the X and Y geometries are needed.
a) T24/T24
defines the position of platen 2 for milling the slot
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b) T60/T24
defines the position of platen 2 for milling flats
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c) T70/T40
defines the position of the counter-spindle for milling the slot
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d) T72/T40
defines the position of the counter-spindle for milling flats
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Comment:
The distance between positions T24 and T21 is 90 mm. Consequently, the geometry X4 is 90mm x 2 = 180 mm (diameter value).
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Comment:
The distance between positions T24 and T22 is 60 mm. Consequently, the geometry X4 is 60 mm x 2 = 120 mm (diameter value).
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4. PROGRAM
| PROGRAM : |
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| Operation 2:2 |
Indexing of position T60 support T24
G1 G100 Y2=0 T60
G1 G100 X2=6 (In this example, the width over flats is 6mm) |
| Operation 4:3 |
Displacing the counter-spindle to face the end miller T72
G1 G100 X4=0 Z4=10 T72 |
| Operation 4:4 |
Milling flats |
| Operation 2:3 |
Indexing position T24 support T24
G1 G100 Y2=0 T24
G1 G100 X2=0 |
| Operation 4:5 |
Displacing the counter-spindle to face the circular miller T70
G1 G100 X4=0 Z4=10 T70 |
| Operation 4:6 |
Milling the slot |
| Operation 1:6 |
Front turning T11 |
| Operation 1:8 |
Rear turning T12 |
| Operation 4:7 |
Position of the counter-spindle for extraction |
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