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COMMUTATOR TURNING LATHE
SCTL/XL-90
DESCRIPTION
The Model SCTL/XL-90 is a heavy duty, high production output machine designed to finish turn the commutator brush track area of relatively small fractional horsepower motor armatures, starter armatures and in some cases alternator slip rings.
Turning of the commutator brush track area is accomplished through the use of a diamond-tipped tool mounted onto a precision machine slide driven by a A.C. servo motor with closed loop tackometer feedback control. The armature is rotated on its own bearing journals in half bearings or vees during the turning operation. The belt rotational system is driven by an A.C. servo drive motor.
On the manual load/unload models, the operator loads the part onto the bearing supports, depresses a set of palm buttons which causes the guard to close, the drive carriage to move down until the belt drive contacts the armature lamination O.D. and the drive motor to start. When the drive carriage is completely down and the armature rotation is at proper speed, this signals the tool slide, with diamond tool, to feed into and across the commutator brush track surface. Upon completion of the cutting operation, the drive motor instantly stops, the slides return to start position and the drive carriage raises allowing the operator to remove the finished part and reload a new one.
Fully automatic machines come equipped with either walking beam or turret type load/unload from pallet or chain-type conveyor systems, and on these style machines, it is simply necessary to keep the conveyor or beam supplied with armatures.
FEATURES
Heavy duty machine base and frame.
Heavy duty precision tool slide.
Servo drive system.
Quick change tooling
Adjustable drive belt tension.
Electroluminescent touch screen operator interface.
Smart valves with noise immune serial communications to machine control. Eliminates bulky wire bundles and junction boxes.
Readily available (off the shelf) control components.
Stand alone or machine mounted control enclosure.
A.C. servo controlled machining slides.
Automatic bearing journal lubrication.
Rapid traverse to cut position.
Programmable with prompting.
Program storage/recall
OPTIONS
Automatic load/unload.
Machine diagnostics.
Rotational speed indicator.
Dual cutting slides (rough and finish).
Automatic tool position setting.
Vacuum system for swarf removal.
Commutator brush station.
Skim cut of lamination O.D.
TECHNICAL SPECIFICATIONS *
Capacity*
Stack Diameter: ¾” (19.1mm) to 4-½” (114mm)
Stack Height: ¾” (19.1mm) to 3-¼” (89mm)
Shaft Length: 1-½” (38.1mm) to 9” (228.6mm)
Commutator Dia: 0.68” (17mm) to 1.5” (38mm)
Power Requirements
One (1) KVA
Air Supply
One (1) SCFM @ 80 PSI (Approximately 0.03 cubic meters/minute)
Cutting Speed
Rotation speed of the commutator is programmable. The optimum cutting speed for the particular commutator copper being turned can be reached by programming appropriately.
Linear speed of the precision cutting slide is controlled by a closed loop servo motor. This allows for rapid speed to cutting position and automatic transfer to cutting speed.
Tolerances
The following tolerances can be achieved:
Bar to bar deviation = .0001” (.00254mm)
T.I.R. = .0003” (.00762mm)
Surface finish:
Single cut = 32 micro inch (0.8 micro meter)
Double cut = 16 micro inch (0.4 micro meter)
Note: These represent the finest surface finishes achievable under normal production conditions, which allow from 3 to 5 seconds for actual cutting time.
Machine Dimensions (approximate)
Manual load/unload = 40” x 40” x 55” (1 x 1 x 1.4m)
Automatic load/unload (approximate)
Walking beam = 40” x 64” x 55” (1.0 x 1.65 x 1.4m)
Chain transfer = 60” x 64” x 55” (1.5 x 1.65 x 1.4m)
*Alteration rights reserved
+For other sizes contract Micafil
