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Pragati-Automation


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BTP-50   BTP-63  BTP-80   BTP-100   BTP-125  BTP-160


TOOL TURRETS
Picture of 3 Pragati CNC lathe turrets
SPECIAL FEATURES

Three piece face gear coupling allows tool disc to be indexed without lifting. It also ensures high repeat positioning accuracy an rigidity.

'Parallel Index' cam mechanism allows fast and smooth indexing of heavy tool disc's. Computer generated cam profiles ensure shock-free indexing action.

Totally enclosed, robust mechanism, with oil bath lubrication.

Electrical elements are conveniently located in a separate area, free from oil and coolant.

Bidirectional working can index in either direction to allow shortest indexing time.

Mechanical drawing of Pragati CNC lathe turret

PRINCIPLE OF WORKING
    Electric motor drives the cam shaft through a system of gears. Cam shaft indexes the follower shaft through a 'parallel index' drive mechanism. Cam shaft is also geared to the 'drum cam' which controls clamping and release of the 3 piece coupling.
    One revolution of cam shaft completes one indexing cycle of 'declamping - indexing - clamping'.
    Absolute position encoder gives feedback of the turret position. Proximity switch inspects the clamped position of the turret.

 

Click on a model below for dimensioned drawings and loading capacity
Turret Model  
BTP-160
BTP-125
BTP-100
BTP-80
BTP-63
BTP-50
Version  
Std
Std
Slow
Std
Slow
Std
Slow
Std
Slow
Std
Inertia of Transportable masses kg.m2
15
5
9
3
5
1
2
0.5
0.8
0.25
Total Indexing time for adjacent station ( 30° or 45°) sec.
1.0
0.75
1.1
0.6
0.9
0.45
0.55
0.4
0.5
0.25
Indexing Frequency 1/min.
8
12
15
15
15
15
Repeat Positioning Accuracy deg
±2"
± 2"
± 2"
± 2"
± 2"
± 2"
Indexing Accuracy deg
±6"
± 6"
± 6"
± 6"
± 6"
± 6"
Total Weight ( Without tool disk) kg.
245
140
91
58
38
22