90results about "Work trasfer apparatus" patented technology

A machine tool (1, 1′), in particular a drilling and milling machine, comprising a housing (20) having a machine bed (2), together with side walls (3, 4) and doors (5, 6, 7), comprising a fixed, pivotable or rotatable work table (8, 9), and comprising a slide (10), transportable in the y direction, for the reception of a spindle head (11), transportable in the x-z direction, for the reception of tools (12), wherein the front door (5), for the enlargement of the working and loading area (21) in the upward direction, is of transomless configuration, the roof region (13) of the machine (1, 1′) has an automatically operable cover (16), the rear region (22) of the machine (1, 1′) has an integrable automatic pallet changer (14), and the machine (1, 1′) is assigned an automatic tool changer (15).

Machine tool simplifying maintenance, reducing manufacturing costs, and enabling high precision machining. The machine tool is equipped with: a bed furnished with a rectangular base, right and left sidewalls provided standing either side of the base, and a rear sidewall provided standing along the back of the base; a table disposed in the space surrounded by the three sidewalls; a first saddle shaped in the form of a rectangular frame shape, provided free to shift back and forth supported on the tops of the left and right sidewalls; a second saddle penetrated by a perpendicular through-hole and arranged free to shift sideways inside the first saddle frame; and a spindle head arranged free to shift perpendicularly inside the through-hole in the second saddle; and a main spindle arranged over the table and supported by the spindle head free to rotate centered on its axis.

The invention relates to a method for tooth-machining of workpieces (3), especially gear wheels, comprising milling, deburring by hobbing and integrated secondary deburring. The method proceeds on a machine tool (1) having two workpiece spindles (11, 12) which may exchange places. A workpiece (3) is mounted on a first workpiece spindle (11), followed by the workpiece spindles (11, 12) exchanging places, followed by pre-milling and, where applicable, cutting (=deburring by shaving) of the workpiece (3), followed by a further exchange of places, followed by chamfering and cutting of the workpiece (3), followed by a further exchange of places, followed by a finish-milling of the workpiece (3), followed by a further exchange of places, followed by a workpiece change. At the same time, the same procedure takes place on the second workpiece spindle (12), staggered in time by an exchange of places of the workpiece spindles (11, 12). With the method according to the invention, well-deburred toothed workpieces (3) may be produced quickly and at low cost.

The invention relates to a machine tool for machining workpieces (P), wherein the machine tool (10) has a first spindle assembly (21) and at least one second spindle assembly (22) each having at least two working spindles (24) which are arranged in a common spindle housing (26, 126) and on which in each case a machining tool (25) for workpiece machining is arrangeable, wherein the machine tool (10) has a workpiece holding device (50) for holding workpieces (P) for the purpose of workpiece machining by way of the machining tools (25), wherein the machine tool (10) has a guide arrangement (30) for the relative positioning of the workpiece holding device (50) holding the workpieces (P) and the first and the at least one second spindle assembly (22) for workpiece machining. In the machine tool (10), provision is made for the first spindle assembly (21) to be guided on a first spindle-assembly guide (31) of the guide arrangement (30) and for the at least one second spindle assembly (22) to be guided on a second spindle-assembly guide (32), separate from the first spindle-assembly guide (31), of the guide arrangement (30), such that the spindle assemblies are movable independently of one another into a working region (A), in which the workpieces (P) are provided for workpiece machining by the workpiece holding device (50), and a tool changing region (W) provided for changing machining tools (25) on the working spindles (24).