A hobbing machine is disclosed having a workpiece spindle, by means of which a workpiece can be rotated about a workpiece axis, a hobbing head, at least one chamfering device, a first slide with a first slide guide system, wherein the hobbing head is arranged on the first slide, and a rail system. The first slide, by means of its first slide guide system, is arranged in a displaceable manner on the rail system. The hobbing machine also has a second slide with a second slide guide system. The at least one chamfering device is arranged on the second slide. Also, the second slide, by means of its second slide guide system, is arranged in a displaceable manner on the rail system, such that the first slide and the second slide can be displaced on an identical portion of the rail system. Presented is a structurally simple hobbing machine by means of which a workpiece can be hobbed and chamfered in a short period of time.

A hobbing machine is disclosed having a workpiece spindle, by means of which a workpiece can be rotated about a workpiece axis, a hobbing head, at least one chamfering device, a first slide with a first slide guide system, wherein the hobbing head is arranged on the first slide, and a rail system. The first slide, by means of its first slide guide system, is arranged in a displaceable manner on the rail system. The hobbing machine also has a second slide with a second slide guide system. The at least one chamfering device is arranged on the second slide. Also, the second slide, by means of its second slide guide system, is arranged in a displaceable manner on the rail system, such that the first slide and the second slide can be displaced on an identical portion of the rail system. Presented is a structurally simple hobbing machine by means of which a workpiece can be hobbed and chamfered in a short period of time.

The present disclosure provides a worm gear machine, including a workbench, a cutter holder and a cutter holder adjusting system, where the cutter holder includes a big bracket, a first slide rail is disposed on the big bracket, a slide seat in sliding fit with the first slide rail is disposed on the first slide rail, a second slide rail is disposed on the slide seat, a small bracket in sliding fit with the second slide rail is disposed on the second slide rail; and a cutter holder spindle is disposed between the big bracket and the slide seat, a cutter bar synchronously rotating with the cutter holder spindle is disposed between an end of the cutter holder spindle facing toward the small bracket and the small bracket, and a gearbox for driving the cutter spindle to rotate is disposed in the big bracket.

Provided is a main spindle mechanism for a machine tool such that even in the case of a small-diameter spindle, it is possible to increase the torque transmitted to a large cutter and it is possible to prevent contact to and collisions with the workpiece. The main spindle mechanism, which is provided to a machine tool that cuts a workpiece by means of a cutter, is characterized by having: a spindle that transmits torque from the drive power source of the machine tool and is formed with outer teeth at the outer periphery of the tip thereof; a large cutter arbor provided with a shaft for attaching the large cutter and a base at which outer teeth are formed having the same diameter as the outer teeth of the spindle; and a gear-coupling-shaped sleeve that is provided in a manner so as to cover the base of the large cutter arbor and the tip of the spindle, and at which are formed inner teeth that mesh with both the outer teeth of the spindle and the outer teeth of the large cutter arbor.

Provided is a main spindle mechanism for a machine tool such that even in the case of a small-diameter spindle, it is possible to increase the torque transmitted to a large cutter and it is possible to prevent contact to and collisions with the workpiece. The main spindle mechanism, which is provided to a machine tool that cuts a workpiece by means of a cutter, is characterized by having: a spindle that transmits torque from the drive power source of the machine tool and is formed with outer teeth at the outer periphery of the tip thereof; a large cutter arbor provided with a shaft for attaching the large cutter and a base at which outer teeth are formed having the same diameter as the outer teeth of the spindle; and a gear-coupling-shaped sleeve that is provided in a manner so as to cover the base of the large cutter arbor and the tip of the spindle, and at which are formed inner teeth that mesh with both the outer teeth of the spindle and the outer teeth of the large cutter arbor.

A gear manufacturing machine for which a machining tool detachably attached to a tool spindle is exchanged by means of an automatic tool changer, wherein the automatic tool changer is provided with: tool holding means for detachably holding a machining tool to be exchanged; moving means for moving the tool holding means in a direction parallel to the axial direction of the tool spindle; and rotating means for rotating the tool holding means.

A manufacturing system including a base and multiple work machine modules that are arranged in an arrangement direction on base to be attachable to and detachable from base, in which one wheel of a pair provided on work machine module is engaged with one rail of a pair provided on base in a state in which positional deviation in the arrangement direction is prohibited, and the other wheel of the pair is engaged with the other rail of the pair in a state in which positional deviation is permitted in the arrangement direction, thereby the position of work machine modules on the base in the arrangement direction is specified, and work machine modules are fixed at a setting position on the base to be restricted so as to be drawn toward the base by a module fixing mechanism that is provided on the base.

A part-holding device includes a holding portion configured to hold an object to be held and a main body configured to detachably connected to the holding portion. The main body has a first surface, a second surface, and a third surface oriented in respective differing directions, and the holding portion has a first abutting surface, a second abutting surface and a third abutting surface capable of abutting against the first surface, the second surface, and the third surface, respectively. The part-holding device further includes pressing means configured to press the holding portion to cause the first abutting surface to abut against the first surface and to cause the second abutting surface to abut against the second surface, and fixing means configured to cause the third abutting surface to abut against the third surface and to fix the holding portion to the main body.

A part-holding device includes a holding portion configured to hold an object to be held and a main body configured to detachably connected to the holding portion. The main body has a first surface, a second surface, and a third surface oriented in respective differing directions, and the holding portion has a first abutting surface, a second abutting surface and a third abutting surface capable of abutting against the first surface, the second surface, and the third surface, respectively. The part-holding device further includes pressing means configured to press the holding portion to cause the first abutting surface to abut against the first surface and to cause the second abutting surface to abut against the second surface, and fixing means configured to cause the third abutting surface to abut against the third surface and to fix the holding portion to the main body.

The invention relates to a method for machining a toothing that is chamfered on a tooth head front edge, in which a material projection resulting on said tooth head front edge chamfer, caused by chamfer formation on a tooth front edge of the toothing by means of plastic deformation, and/or caused by removing a primary/secondary burr produced on said end face during production of the toothing and, if applicable, formation of the tooth front edge chamfer, is removed in a rotational operation by a machining procedure with a machining tool that has a cutting edge.