Tool changers for changing tools on spindles of machine tools and machine tools comprising such tool changers

摘要

A disclosed example tool changer for changing a tool on a spindle of a machine tool comprises a tool drum having a plurality of tool holders to hold tools. The example tool changer also includes an axle carrier on which the tool drum is rotatably supported to align the tool holders with the spindle. A first coupling portion is rotatably supported on the axle carrier. At least one first gear stage is provided via which the first coupling portion is connected to the tool drum. The first coupling portion is adapted to be coupled or uncoupled with a second coupling portion rotatably supported on a spindle stock of the machine tool and connected to the spindle of the machine tool via at least one second gear stage. The tool drum is adapted to be driven, when the first and second coupling portions are in a coupled state, by the spindle of the machine tool via the at least one second gear stage, the second and first coupling portions and the at least one first gear stage to align the tool holders.

主权项

1. A tool changer for changing a tool on a spindle of a machine tool, comprising:
a tool drum having a plurality of tool holders to hold tools adapted to be received by the spindle when the spindle is in a tool receiving position; an axle carrier to rotatably support the tool drum, the axle carrier to rotate about a rotational axis of the tool drum; a first coupling portion rotatably supported on the axle carrier; and a first gear stage to couple the first coupling portion and the tool drum, wherein the first coupling portion is adapted to be coupled or uncoupled with a second coupling portion that is rotatably supported on a spindle stock of the machine tool, the second coupling portion being connected to the spindle of the machine tool via a second gear stage, and wherein the tool drum is adapted to be driven by the spindle of the machine tool via the second gear stage when the first and second coupling portions are in a coupled state, the second and first coupling portions, and the first gear stage to align a longitudinal axis of the tool coupled to one of the tool holders relative to a rotation axis of the spindle when the spindle is in the tool receiving position, the first and the second coupling portions forming a non-gear positive-locking connection when the first and second coupling portions are in the coupled state, the first and second coupling portions to be coupled and uncoupled by moving the second coupling portion relative to the first coupling portion in a displacement direction of the spindle stock of the machine tool.