Machine tool with tool magazine

Machine tool for sequentially machining the pieces with different tools which may be clamped in a spindle of the machine tool, with a magazine in which the tools are disposed in a ring pattern around the spindle axis and held in holders, each holder being provided with its own drive which moves it in a position where it is aligned with a spindle axis (clamping position) and into a position outside the spindle axis (magazine position), the said holders being retained in a common carrier which is connected to the spindle head of the machine guiding the spindle in such a manner that the carrier is shiftable parallel to the spindle axis and is in a fixed position relatively to the spindle head during the cutting operation of the machine tool and is moved parallel to the spindle axis relatively to the spindle head during the tool change, wherein the holder remains in alignment with the spindle axis during the cutting operation of the tool associated with that holder, the carrier has only two shift postions relative to the spindle head, namely one shift position, in which the tool is inserted into the spindle and the machine tool works, and the other shift position, in which the tool held by the holder in alignment with the spindle axis is completely free, and the drive for each holder comprises a parallel guide comprising two links, said links with a tool in working position being arranged in parallel with the spindle axis, and in the magazine position the links being swivelled upward by more than 90 in relation to the working position, said carrier being provided with a tubular section guided for displacement in the direction of the spindle axis on a corresponding tubular section of the spindle head, means being provided for keeping said tubular section of said carrier in a fixed position relative to said tubular section of the said spindle head during the working movements of said spindle head, and means also being provided for effecting relative movement parallel to the spindle axis between said tubular section of the said carrier and said tubular section of the said spindle head during tool change, and said carrier being held in contact with a stop of the spindle head with the aid of elastic tensioning means as long as the spindle is in a position where it has been moved out of the tool changing position toward the workpiece in the direction of the spindle axis, and when the spindle reaches the tool changing position, a part of said carrier coming to rest against a stop located at a fixed height, such that the said carrier remains stationary when the spindle is retracted to release the tool.