UNDERCUTTING MACHINE FOR MICANITE INSULATION OF CYLINDRICAL COMMUTATORS
OF DC MOTOR ARMATURES (ACM48)
|
The ACM48 automatic machine is designed for the undercutting of the micanite insulation between the cylindrical commutator bars of starters and other DC electric motors. It is especially suitable for processing of new or rebuilding of old car starter armatures.
The machine is equipped with highly reliable indexing mechanism with photo-electric sensor and step-motor drive, ensuring automatic determination of the commutator bar number and perfect alignment of mica segment with the tool. Automatic detection and ignoring of fault signals. A pneumo-mechanical sensoring mechanism is provided, ensuring the automatic maintaining of the pre-set depth of cutting, irrespective of the commutator O.D. variations.
Capacity:
90 armatures/hour for commutator of 38 mm diameter and 23 bars |
 |
|
| # |
Parameter
|
Value |
| 1 |
Workpiece |
Cylindrical commutator of DC motor armature
|
| Maximum arnmature shaft length, mm |
500 |
| Maximum armature stack O.D., mm |
96 |
| Maximum work travel, mm |
50 |
| Maximum commutator O.D., mm |
60 |
| Minimum commutator O.D., mm |
38, 26 |
| Note:
Commutators of diameter under Ø38 are machined using collet chuck with reduced outside diameter. |
| 2 |
Spindle unit |
| Rotation speed, RPM |
6000 ..
15000 |
| AC drive motor power, kW |
0.37 |
| 3 |
Milling tool |
Ô12.7
x Ô4.76 x 1.1 mm or
Ô8 x Ô2.5 x 1.3 mm
carbide slitting saw |
| 4 |
Feeding unit |
pneumo-hydraulic actuator |
| Total slide stroke, mm |
90 |
| Maximum working stroke, mm |
50 |
| Feed rate range, m/min |
0.014...5 |
| 5 |
Cutting depth setting-up mechanism |
Pneumatically counter-balanced cradle with feeler and brake |
| Maximum vertical travel of the spindle, mm |
22 |
| Maximum adjustable depth of cutting, mm |
2 |
| Depth adjusting screw dial reading, mm |
0.1 |
| 6 |
Armature indexing mechanism |
Step motor with toothed belt drive |
| Step motor type |
KML062F07
WARNER ELECTRIC |
| Motor resolution, steps/rev |
2000 |
| Belt drive ratio |
4.5:1 |
| 7 |
Tailstock quill drive |
Pneumatic |
| |
Quill stroke, mm |
42 |
| |
Thrust, N |
3000 |
| 8 |
Workpiece axis height above floor, mm |
1000 |
| 9 |
Power supply, V |
upon request |
| 10 |
Air pressure supply, MPa |
0.6 |
| 10 |
| Overall dimensions: length/width/height, mm |
1275/960/1400 |
| 10 |
Weigth, kg |
500 |
