A machine tool includes a frame with two opposite frame sections, a number of leg elements arranged on the frame, and a first carriage having a first linear axis. The first carriage is guided on the two opposite sections of the frame and is displaceable in a first direction. A second carriage of a second linear axis is guided on the first carriage and is displaceable in a second direction A tower element has a third linear axis, which is retained on the second carriage. A machining element is retained on the tower element and is displaceable in a third direction, and a tool spindle is arranged on the machining element for receiving a tool.

The invention relates to a toothing processing machine comprising a machine frame and a spindle carrier having a first spindle. The spindle comprises a first spindle housing and a first spindle shaft, which is arranged in the first spindle housing such that it can rotate about a first spindle axis, and a free end for receiving a work piece or a tool. A second spindle is also provided having a second spindle housing and a second spindle shaft for receiving a tool or work piece, wherein the second spindle shaft is mounted in the second spindle housing such that it can rotate about a second spindle axis. In addition, at least one wall of the machine frame forms a part of the casing of a closable working chamber, in which the work piece can be processed and which can be closed in order to prevent the release of a material removal, a processing liquid and/or a processing mist from the working chamber into other machine regions or to the outside. The spindle carrier is also arranged on the machine frame such that it can move in the direction of the first spindle axis. In addition, the closable working chamber includes the free end of the first spindle shaft and at least sections of the second spindle shaft. According to the invention, the toothing processing machine comprises a bellows, securely connected to the spindle carrier on a first side and to the at least one wall of the machine frame on a second side, wherein the bellows borders the closable working chamber at at least one point in such a way that a part of the spindle carrier is permanently positioned outside of the working chamber. In this way, the bellows is able to commence a relative movement in the direction of the first spindle axis between the spindle carrier and the machine frame, via a moving apart and together.

A numerical-control machine tool is provided and includes a load-bearing beam which extends horizontally, has two axial ends resting in sliding manner on two lateral shoulders that rise from a basement and extend horizontally side by side so as to define a longitudinal corridor orthogonal to the longitudinal axis of the beam; a spindle-holding carriage which is movable on the load-bearing beam parallel to the longitudinal axis of the beam; a spindle-holding shaft which is fixed to the spindle-holding carriage in a vertical position, and is movable on the spindle-holding carriage parallel to its longitudinal axis; a front wall and a rear wall that close the two ends of the longitudinal corridor; an upper cover which closes the longitudinal corridor at the top; and an ambient conditioning unit which is adapted to bring and maintain the temperature of the air present inside the machining chamber around a given target value.

The invention relates to a protective cover (01) comprising at least one protective cover element (02), which is variable in length, and comprising a frame element (04), said frame element (04) being capable of being connected to the protective cover element (02), said protective cover element (02)comprising at least one holding means (03) and said frame element (04) comprising at least one fastening means (06) in the area of a first longitudinal edge (05a), the connection between the holding means (03) and the fastening means (06) being a detachable, in particular force-fitting and/or interlocking, snap connection.

A protective cover having at least one protective-cover element adjustable in length and having at least one frame element, the protective-cover element adjustable in length having at least one holding means, the frame element having a first longitudinal edge, and at least one fastening means being disposed at the first longitudinal edge, and the holding means and the fastening means being connectable in a detachable manner, in particular a force-fitting and/or form-fitting manner. An installation aid is disposed on the fastening means, the installation aid comprising a positioning edge and a guide edge, and the positioning edge and the guide edge essentially being opposite edges at the installation aid.

The invention relates to a toothing processing machine comprising a machine frame and a spindle carrier having a first spindle. The spindle comprises a first spindle housing and a first spindle shaft, which is arranged in the first spindle housing such that it can rotate about a first spindle axis, and a free end for receiving a work piece or a tool. A second spindle is also provided having a second spindle housing and a second spindle shaft for receiving a tool or work piece, wherein the second spindle shaft is mounted in the second spindle housing such that it can rotate about a second spindle axis. In addition, at least one wall of the machine frame forms a part of the casing of a closable working chamber, in which the work piece can be processed and which can be closed in order to prevent the release of a material removal, a processing liquid and/or a processing mist from the working chamber into other machine regions or to the outside. The spindle carrier is also arranged on the machine frame such that it can move in the direction of the first spindle axis. In addition, the closable working chamber includes the free end of the first spindle shaft and at least sections of the second spindle shaft. According to the invention, the toothing processing machine comprises a bellows, securely connected to the spindle carrier on a first side and to the at least one wall of the machine frame on a second side, wherein the bellows borders the closable working chamber at at least one point in such a way that a part of the spindle carrier is permanently positioned outside of the working chamber. In this way, the bellows is able to commence a relative movement in the direction of the first spindle axis between the spindle carrier and the machine frame, via a moving apart and together.

A numerical-control machine tool is provided and includes a load-bearing beam which extends horizontally, has two axial ends resting in sliding manner on two lateral shoulders that rise from a basement and extend horizontally side by side so as to define a longitudinal corridor orthogonal to the longitudinal axis of the beam; a spindle-holding carriage which is movable on the load-bearing beam parallel to the longitudinal axis of the beam; a spindle-holding shaft which is fixed to the spindle-holding carriage in a vertical position, and is movable on the spindle-holding carriage parallel to its longitudinal axis; a front wall and a rear wall that close the two ends of the longitudinal corridor; an upper cover which closes the longitudinal corridor at the top; and an ambient conditioning unit which is adapted to bring and maintain the temperature of the air present inside the machining chamber around a given target value.

[Subject] To provide a novel bellows with protective plate members, which allows replacement of only damaged slat(s), rather than total replacement of the bellows, when damaged or deformed only in a part of a large number of fixed slats (protective plate members). [Solving Means] The bellows includes a bellows body 2 having ridge parts 2a and valley parts 2b alternately formed therein, and having a bellows supporting plate 5 fixed inside thereof; a fixing plate 3 fixed to the bellows body 2; protective plate members 4 each having a fitting plate part 41 detachably attached to the fixing plate 3, and a protective plate 44; wherein the fixing plate 3 having formed therein one engagement parts 33, 34, the fitting plate part 41 having formed thereon other engagement part 45, 46, thereby making it possible to attach or detach the protective plate member 4 to and from the fixing plate 3.

A dust-proof device for machine tool worktable comprises a worktable, a worktable base, a stainless steel dust cover, organ-type dust covers and L-shaped dust-proof plates. The worktable base is installed on a machine tool bridge. The upper portion of the worktable base is provided with a U-shaped through groove. Two ends of the stainless steel dust cover are sealed by the L-shaped dust-proof plates. The upper portion of each L-shaped dust-proof plate is fixed on the lower side of the stainless steel dust cover, and the lower portion of the L-shaped dust-proof plate is fixed on the machine tool bridge. Each organ-type dust cover is disposed under the stainless steel dust cover and has one end connected to the worktable base and the other end connected to the L-shaped dust-proof plate. The worktable covers the stainless steel dust cover and is connected to the worktable base by means of bolts.

A machine tool has a frame, a tool spindle with a tool holder, a workpiece holder and a protective bellows. The tool spindle and the workpiece holder are movable relative to one another in at least two translatory axes in a working space. The working space is delimited by at least one partition wall, which has at least one travel opening and, adjacent to the travel opening, a mounting collar, which surrounds the travel opening at least partially. At least the tool spindle or the workpiece holder is coupled to the frame through the travel opening. The protective bellows has a mounting edge adapted to the mounting collar, which is provided with a tension member. The protective bellows is mountable on the mounting collar in a relaxed state of the tension member and is secured to the mounting collar in a tensioned state of the tension member when in a mounted state.