Machine tool with plural tool spindles
AssigneeSchaudt Maschinenbau GmbH
InventorFrank Reichel
Life of this patent
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Abstract
A circular grinding machine wherein a reciprocable carriage supports a first rotary tool spindle for a relatively large grinding wheel and the housing including the bearing for the first spindle mounts a carrier which is pivotable about the axis of the first spindle by a fluid-operated motor and supports a second tool spindle for a relatively small grinding wheel. The carriage can be advanced to a first position to move the relatively large grinding wheel into coarse material removing contact with a rotary workpiece (such as a camshaft), and the carriage is thereupon retracted to a second position in which the carrier can be pivoted about the axis of the first spindle to move the relatively small grinding wheel into precision-finishing engagement with the pretreated workpiece.
Claims9
A grinding machine comprising a support movable back and forth along a predetermined path;
- a first tool spindle rotatable about a first axis;
- a bearing assembly provided on said support, rotatably mounting said first spindle and comprising a first bearing surrounding said first spindle and a housing receiving said first bearing and movable with said support;
- a carrier movable relative to said bearing assembly about said first axis;
- means for movably mounting said carrier on said bearing assembly, said means for movably mounting being rotatably supported by said housing and including a second bearing mounted in said carrier;
- and a second tool spindle supported by said second bearing and rotatable about a second axis, said support being movable between a first position in which a workpiece is engageable by a grinding tool carried by said first spindle and a second position in which said workpiece is engageable by a grinding tool carried by said second spindle.
Dependencies are inferred from the claim text.