Working Principle:
The ADM 4E is aligned in centerline with the valve guide by means of a pilot inserted into the valve guide. The counterbore is machined in a lathe-type turning action to the preset diameter by the simultaneous application of both a circular and an axial feed motion to the single point cutter. While the cutter rotates around the counterbore, a feed gear mechanism ensures a continuous axial feed motion which is defined by a slideway in the tool head.
Features:
The machine is fitted with two motors providing a smooth cutting action.The speed of the motors is infinitely variable so that the circular motion of the cutter around the counterbore can be adapted to the diameter and the material to be cut.The motors are of the low voltage type to eliminate electric hazards. The control circuits are housed in a separate power supply unit to reduce the weight of the machine for ease of handling.
Various tool heads are available to cover a broad diameter range. For instance, a typical tool head covers a diameter range from 150 to 190 mm.The tool slide guided in the tool head for axial feed motion is fitted with a fine boring head for coarse adjustment of the turning diameter as well as precise radial setting of the cutter by means of a circular scale to ensure high precision machining to IT6 tolerances.
The tool head includes a friction coupling so that axial feed motion of the cutter is automatically halted in case of a collision.
