WO2012168489A1

WO2012168489A1 - Machine tool and method for a machine tool

Info

Publication number: WO2012168489A1
Application number: PCT/EP2012/061043
Authority: WO
Inventors: Leonidas Chatzikiriakos
Original assignee: Mauser-Werke Oberndorf Maschinenbau Gmbh
Priority date: 2011-06-09
Filing date: 2012-06-11
Publication date: 2012-12-13
Also published as: DE102011050959A1; WO2012168489A4

Abstract

The invention relates to a machine tool having a workpiece carrier (6) and one or a plurality of tool carriers (4) arranged in application trays of the machine tool. The machine tool is used to machine workpieces (16), in particular connecting rods, said workpieces being machined in a machining chamber (20) of the machine tool. The workpiece carrier is loaded and/or unloaded by way of a workpiece feeder device (8). To that end, the workpiece feeder device is provided with a carrier body (14), on which machined and non-machined workpieces can be arranged and exchanged by the workpiece carrier during a loading and unloading process. For a flexible arrangement, in particular for a space-saving arrangement of the workpiece feeder device with respect to the machine tool, the carrier body can be moved, in particular pivoted, along at least two machine axes. Thus, the carrier body can be flexibly inserted into the machining chamber from an external side of the machine tool.

Description

description

The invention relates to a machine tool according to the preamble of

Patent claim 1 and a method for a machine tool.

The document WO 2008/089751 A1 discloses such a machine tool in inverse construction. This has a machine frame for storage of a variety of tool spindle heads and a workpiece carrier. This can be moved along an X-Y-Z guide. For loading and unloading of the workpiece carrier is a

Workpiece supply provided. This has a large number of recordings for the workpiece carrier to be supplied workpieces and for removing from the workpiece carrier machined workpieces. The pictures are on one

Support body of the workpiece feed arranged. The support body can be moved linearly along a machine axis through a functional compartment formed in the machine frame of the machine tool to the workpiece carrier. The

Workpiece feeding device extends away from the machine tool, approximately perpendicular to the functional compartment.

This solution has the disadvantage that such Werkstückzuführeinrichtung has a large space and space requirements. Furthermore, the loading and unloading of workpieces is extremely time consuming. About 25% of a cycle time for machining the workpieces is spent on this.

In contrast, the invention has the object, a

To provide a machine tool which has a small footprint and to provide a method for a machine tool, with which a cycle time is reduced.

This object is with regard to the machine tool according to the features of claim 1 and in terms of the method according to the features of

Patent claim 16 solved. A machine tool according to the invention has a workpiece carrier and one or more tool carriers with which workpieces held by the workpiece carrier are processed. The workpieces are, for example, connecting rods. For feeding unprocessed workpieces to the workpiece carrier and discharging machined workpieces from the workpiece carrier, a workpiece feed device is provided. This has a support body with which at least one workpiece is portable. The support body is forcibly guided from an outside of the machine tool to the interior or working space in the direction of two machine axes and / or moved forcibly guided along a curve. Preferably, the method is carried out by pivoting the supporting body from the outside of the machine tool to the inside to the working space.

This solution has the advantage that the workpiece feeding device can be arranged arbitrarily on the machine tool and, for example, along a lateral

Can extend application of the machine tool. The support body is then pivoted, for example, adjacent to the application surface in the working space. The machine tool can thus be made more compact overall. In a juxtaposition of several such machine tools, these can thus be arranged more flexible and with less distance from each other.

In a further embodiment of the invention, an orientation of the changes

Supporting body by the positively driven method in the direction of two machine axes or along a curve. This allows the support body already during the

Method are brought into a low lying to the workpiece carrier alignment.

An extremely large space gain is achieved when the

Werkstückzuführeinrichtung approximately parallel to an application of the

Machine tool extends.

Preferably, the first working position of the support body is adjacent to the outer application surface of the machine tool, whereby the support body is arranged extremely space-saving to the machine tool. Advantageously, the access area of the support body to the working space is a lower application surface of the machine tool or a lower side, which is used, for example, in addition to the chip removal. Thus, in comparison to the prior art, a further lateral application surface of the machine tool can be used, for example, for receiving a further tool carrier, since the underside of the

Workpiece feed is used. On the other hand, this arrangement leads to an extremely low space requirement of the machine tool. The support body preferably has a receiving side for loading and unloading of the at least one workpiece. This is advantageously brought during the process of the support body in a favorable orientation. In particular, the receiving side facing away from the machine tool in the first working position, whereby the arranged on the support body workpiece is easily accessible from the outside, and in the second working position for loading and unloading of the workpiece carrier facing this.

In order to process several workpieces at the same time, the support body has a plurality of receptacles for workpieces. Preferably, the workpiece carrier has the same number of receptacles, wherein workpieces are arranged on the support body and on the workpiece carrier such that the loading and unloading can take place simultaneously.

For positive guidance of the support body is advantageously a coupling or

Gearbox provided over which this is forcibly guided along a curve pivoted.

Preferably, the coupling gear has a along the first machine axis, in particular the Z-axis, displaceable drive member. This is one

Pivoting member arranged with the support body, via which it is pivotable. The support body is displaceable in the longitudinal direction of the pivot member on this. The support body and the drive member are connected to a rotatably mounted rod member. Furthermore, the pivot member with a during pivoting of the Supporting body fixed holding member connected via a further rotatably mounted rod member. The various members and the support body are thus such

arranged that a linear displacement of the drive member to a

Swiveling or pivoting movement of the support body leads.

For displacing the drive member, a further rod member or a drive rod is preferably connected to a crank arm of a crank drive arranged on the holding member. In a further embodiment of the invention, the crank arm extends in the two working positions along a direction of displacement of the drive member. For pivoting the support body between the working positions of the crank arm performs an approximately 180 ° rotation. This results in a constant

Rotational speed of the crank arm an approximately sinusoidal velocity profile of the drive member.

For loading and unloading of the support body, for example via a handling, the drive member and the holding member are moved together along a guide or a guide rail, whereby, for example, the support body can be moved out from the bottom of the machine tool.

To protect the workpiece feeding device, for example chips, a cover is provided. In this case, the cover can also be forcedly guided and open in the direction of the working space during the movement of the supporting body and in turn close in the opposite direction when the supporting body moves. Instead of the entire cover, only a part of the cover,

For example, a lid, be pivoted according to the support body.

In a method according to the invention for an inventive

Machine tool is moved during a machining process of the at least one workpiece in the working space through the workpiece and tool carrier of the support body of the workpiece feed into the work space or out of it. As a result, the processing of the workpiece does not take place until the Workpiece feeding is carried out completely from the working space, but can be moved by the flexible movement of the support body along two machine axes and / or along a curve thus flexible compared to the prior art in the working space, whereby the movement of the support body of the movement of the tool carrier or vice versa adjusted can be. (Width of the

Workpiece carrier> its height; Thus, the support body is faster away from the working area when the support body is just swiveled down).

Other advantageous developments of the invention are the subject of further subclaims.

In the following, a preferred embodiment of the invention is explained in more detail with reference to schematic drawings. 1 to 5 each show a simplified schematic view of a side view

Representation of a machine tool according to an embodiment; and

Figure 6 in a perspective view of a simplified schematic

Representation of the machine tool according to the embodiment.

FIG. 1 shows a schematic representation of a side view of a

Inventive machine tool 1 according to an embodiment. in the

Below are only essential for the invention elements of

Machine tool 1 explained. For further information, reference is made, for example, to the document WO 2008/089751 A1. The machine tool 1 is designed according to the inverse concept and is used, for example, for connecting rod machining (small, large eye drill, side face mill, screw hole machining, etc.). The machine tool 1 has a not shown in the figure 1 machine frame, in which a plurality of tool spindle heads 4 and a workpiece carrier 6 are mounted. When executed according to the inverse concept machine tools 1 is the

Workpiece carrier 6 along an X-Y-guide and in the Z-direction movable to align one or more workpieces with respect to a tool spindle head provided for the respective manufacturing process. On the workpiece carrier 6 can a variety of workpieces simultaneously be stretched, so that by means of a

Mehrspindelkopfes a simultaneous machining of the workpieces is possible.

About a Werkstückzuführeinrichtung 8, the workpiece carrier 6 with

Workpieces, such as connecting rods, loaded and unloaded.

The machine tool 1 has a plurality of application surfaces. In the left in Figure 1 application surface of the workpiece carrier 6 and in the right are the

Tool spindle heads 4 arranged. A further tool carrier 10 is arranged on an upper application surface seen in FIG. 1 or in the Y direction. Furthermore, two application areas are seen in the Z direction and one

Application area 12 formed below the machine tool 1 as a lower application compartment. The workpiece carrier 6, the tool spindle heads 4 and the tool carrier 10 are arranged in a machine frame, not shown, in which also the

Application surfaces are designed as subjects.

At the lower application compartment 12, the workpiece feed device 8 is arranged, which extends approximately horizontally. The workpiece feeding device 8 is arranged at least in sections underneath the machine tool 1. This has a support body 14 on which a plurality of workpieces 16 are held in the form of connecting rods. The workpiece feed device 8 guides the workpieces 16 to the workpiece carrier 6 via the carrier body 14. In this case, the supporting body 14 can be forcibly guided by means of a coupling mechanism 18 from a first working position shown in FIG. 1 into the working space 20. The pivoting movement can be seen in the following figures 2 to 5.

The coupling mechanism 18 in Figure 1 is along a trained as a rail guide 21 in the Z direction movable to the support body 14 outside the

Machine tool via a handling device with workpieces 16 to load and unload. The coupling mechanism 18 has a drive member 22 which by displacement in the Z direction pivoting of the support body 14 along a curved path in the Working space 20 causes. In an end portion 24 of the drive member 22 facing the support body 14, a pivot member 26 is rotatably supported about the X-axis. On the pivot member 26, the support body 14 is slidably mounted along a longitudinal axis of the pivot member 26, wherein in the figure 1, this longitudinal axis extends radially to the X-axis of the machine tool 1. In the region of the end portion 24, a bearing projection 28 is formed in the drive member 22, which extends in the direction of

Machine tool 1 extends. At this a rod member 30 is rotatably mounted about the X-axis, which in the first working position shown in Figure 1 angled to the Z-axis in the figure 1 down, away from the machine tool 1, extending in the direction of the support body 14 and at its side surface 32 approximately centrally - as seen in the longitudinal direction - rotatable about the X-axis with a rotary bearing 34 is mounted thereon. The pivot member 26 also has a bearing projection 38, which points towards the machine tool 1, on its rear surface 36 facing away from the carrier body 14 and facing the application compartment 12 in FIG. A further rod member 40 is mounted rotatably about the X-axis and, in the first working position, extends horizontally away from the support body 14 and the pivoting member 26 toward a holding member 42 and is rotatably mounted thereon about the X-axis. The rod member 40 is arranged in the figure 1 above the pivot member 30. The holding member 42 is opposite from another end portion 44 of the

Drive member 22, which faces away from the support body 14, arranged on the guide 21 slidably along the Z-axis. The holding member 42 has an approximately horizontally extending holding plate 45 which is mounted on guide receivers 46, 48 on the guide 21, wherein the guide receptacles 46 and 48 in the direction of

Have machine tool 1 and in the direction of the Y-axis. On a bottom 50 of the holding plate 45 of the holding member 42, a crank mechanism 52 is arranged. An axis of rotation of the crank mechanism 52 extends in the parallel distance to the pivot axis of the support body 14 in the direction of the X-axis. The crank mechanism 52 has a crank arm 54 which extends approximately horizontally in the first working position shown in FIG. The crank arm 54 is pivotable about the crank axis, ie about the X-axis. The crank arm 54 is pivoted by a crank drive 56 which is fixed to the underside 50 of the support member 42. The crank drive 56 is, for example, a hydraulic or electric motor. At an end portion 58 facing away from the crank drive 56 of the crank arm 54, another rod member 60 is rotatably supported about the X axis. The rod member 60 extends in the first working position in the horizontal direction or along the Z-axis to the drive member 22 and is rotatably supported on the X-axis on this. For this purpose, the drive member 22 has at its end portion 44 facing away from the machine tool 1 bearing projection 62 on which the rod member 60 is mounted.

With reference to the figures 1-5, the operation of the

Workpiece feeding 8 explained.

In Figure 1, the Werkstückzuführeinrichtung 8 is shown in a first working position, in which the support body 14 is disposed outside of the working space 20, and in Figure 5, a second working position of the Werkstückzuführeinrichtung 8 is shown in which the support body 14 within the working space 20 for loading - And unloading of the workpiece carrier 6 is arranged. FIGS. 2-4 show intermediate positions of the workpiece feed device 8 and of the carrier body 14, in which the carrier body 14 is pivoted along a curve. For pivoting the support body 14, the holding member 42 is firmly held in Figure 1 in the position shown on the guide rail 21.

From the first working position in FIG. 1, the drive member 22 is displaced away from the holding member 42 via the crank drive 56 in the direction of the Z-axis. For this purpose, the crank arm 54 is pivoted clockwise - about the X-axis - down, the pivoting movement via the rod member 60 to an axial displacement of the drive 22 along the guide rail 21, see Figure 2. Together with the drive member 22 which is mounted thereon Swivel member 26 in the figure 2 and the support body 14 also moved in the direction of the Z-axis. Since the pivot member 26 is connected to the support member 42 via the rod member 40 and the support member 42 is held in position, the pivot member 26 performs a pivotal movement about its bearing point in the end portion 24 of the drive member 22. The on the

Swivel member 26 mounted support 14 thus also pivots about this

Bearing axis that extends in the direction of the X-axis. Due to the arrangement of the arranged between the support body 14 and the drive member 22 rod member 30, which is also pivoted upward in Figure 2, the support body 14 moves in addition to its pivotal movement relative to the pivot member 26. Here, the support body 14 along the longitudinal axis of the pivot member 26 - which extends radially to the X axis - moved because he displaceable in this direction on the

Swivel member 26 is mounted.

Upon further pivoting of the crank arm 54, see Figure 3, the

Drive member 22 further moved approximately parallel to the application tray 12 and horizontally along the bottom of the machine tool 1, whereby the support body 14, the pivot member 26, the rod members 30 and 40 further in the figure 3 upwards

be pivoted. Also, the support body 14 is further displaced axially of the longitudinal axis of the pivot member 26 away from the drive member 22. The support body 14 thus pivots further into the working space 20. Figure 4 shows the Werkstückzuführeinrichtung 8 in a position in which the

Supporting body 14 is shown shortly before reaching its second working position in the working space 20.

Figure 5 shows the Werkstückzuführeinrichtung 8 with the support body 14 in its second working position within the working space 20. The crank arm 54 of the

Crankshaft 52 extends approximately in the horizontal direction, as well as the

Bar members 40 and 60. The distance between the drive member 22 and the support member 42 is compared to the first working position in Figure 1 by a length greater, the distance in the horizontal direction between the bearing axis 64 of the rod member 60 on the crank arm 54 and a crank axis 66th of the crank mechanism 52 corresponds.

The pivot member 26 is aligned together with the support body 14 in this second working position approximately perpendicular to the drive member 22, whereby the support body 14 and the drive member 22 approximately in the direction of the Y-axis or in

Vertical direction of the machine tool 1 extend. A receiving side 68 of the supporting body 14, on which the workpieces 16 are arranged, in this case points in the direction of the workpiece carrier 6. The workpiece carrier 6 and the supporting body 14 are thus arranged opposite one another in this second working position. The crank arm 54, the rod member 60 and the drive member 22 are arranged in the first and second operating position of the support body 14 in Figures 1 and 5 approximately in a horizontal direction or approximately linear to each other. This results in that in the semicircular pivoting movement of the crank arm 54 in Figures 1 to 5 with a substantially constant pivoting the

Drive member 22 is driven via the rod member 60 at a travel speed having an approximately sinusoidal course over time. At the beginning of the pivotal movement of the crank arm 54 of this is pivoted from its horizontal orientation, see Figure 1, downwards, see Figure 2. By the deflection of the

Crank arm 54 from the linear arrangement in Figure 1 increases the speed of movement of the drive member 22 until the crank arm 54 reaches its vertical position in Figure 3. From this position, the crank arm 54 is pivoted again in the direction of a linear arrangement with the rod member 60, whereby the travel speed of

Drive member 22 drops again. This sinusoidal course of the travel speed of the drive member 22 has the effect that the support body 14 in the region of its

Working position only a relatively small Verschwenkweg with a

comparatively slow speed and between the working positions a comparatively large Verschwenkweg with a comparatively large

Speed covers. This makes it possible that the crank drive 56, the support body 14 is accurately positioned in its working position by small pivoting movements of the crank arm 54, whereby a fine positioning of the support body 14 is achieved in a simple manner. The workpiece carrier 6 is designed as an XY carriage and can be moved in the X and Y directions. This is used in a sleeve, which is not shown in the figure 5. The workpiece carrier 6 can be further pivoted by the quill around a C-axis. However, this is only an option and not necessarily required. Furthermore, the workpiece carrier 6 can be moved in the Z direction. Thus, this can be aligned exactly to the workpieces 16 and moved to the support body 14 to load and unload workpieces 16. The charging process is explained in more detail in FIG. FIG. 6 shows the machine tool 1 with the workpiece feed device 8, in which the carrier body 14 is arranged in the working space 20 in the second working position, see also FIG. 5. The receiving side 68 of the carrier body 14 is T-shaped. Parallel to the rod member 30 on the side surface 32 facing away from the side surface 70 of the support body 14 is another in the parallel distance to

Rod member 30 extending rod member 72 is arranged, which is connected according to the rod member 30 with the drive member 22, whereby the support body 14 via two rod members 30, 72 is moved. Furthermore, a guide rail 74 of the pivoting member 26 is shown in FIG. 6, which is gripped by the side surfaces 32, 70 of the support body 14 and is slidably mounted thereon. On an upper T-leg 76 of the receiving side 68 of the support body 14 eight workpiece holders 78 are arranged in the horizontal direction in a row. In each second receptacle 78 while a workpiece 16 is supported. The workpiece 16 is a connecting rod with a large connecting rod eye in FIG. 6 and a lower small one

Connecting rod. The workpiece carrier 6 also has eight workpiece holders 80 arranged in a row, wherein only the outermost one is recognizable in FIG. In the workpiece holders 80 of the workpiece carrier 6 four workpieces are also supported, in such a way that the respective workpiece holder 80th

opposite workpiece holder 78 of the support body 14 is free. Thus, only every second workpiece holder 80 of the workpiece carrier 6 is occupied.

For loading and unloading of the workpiece carrier 6, this is moved in the direction of the support body 14 to a transfer position. In this machined workpieces from the workpiece carrier 6 in the free workpiece holders 78 of

Carrying body 14 set and simultaneously unprocessed workpieces 16 in free

Workpiece receivers 80 of the workpiece carrier set. Thus, the

Workpiece carrier 6 loaded simultaneously with unprocessed workpieces 16 and unloaded with his machined workpieces, while the support body 14 is loaded with the machined workpieces and unloaded with the unprocessed workpieces 16. After loading and unloading the support body 14 is swung out of the working space 20 again. Here, in the figures 1-5

described pivoting movement executed exactly in the opposite direction. After swinging out of the support body 14 from the working space 20 and thus upon reaching the first working position, see Figure 1, the

Workpiece feeding 8 out horizontally approximately along the Z-axis from the bottom of the machine tool 1 by the holding member 42 and the drive member 22 along the guide rail 21 are moved by a drive device. The machined workpieces 16 transported by the support body 14 are then removed, for example via a handling device, from the workpiece fixtures 78 and then unprocessed into the unloaded workpiece fixtures 78

Workpieces 16 used. Following this, the support body 14 is again moved to the first working position and then into the second working position in the

Working space 20 pivoted.

The underside of the machine tool 1 is used for chip removal of chips produced during machining of the workpieces. This is here about the

Application compartment 12 discharged. To the workpiece feed 8 before

To protect contaminants, in particular by chips, a cover 82, see Figure 1 and Figure 6, is provided. This has an approximately U-shaped cross-section and completely covers the workpiece feed device 8 in the first working position of the support body 14, which is not shown in FIGS. 1-6 for the sake of simplicity. The cover 82 has in this case in the region of the pivot member 26 and the support body 14 on a pivotable lid. If the supporting body 14 is now pivoted together with the pivoting member 26 into the working space 20, then the lid likewise performs a pivoting movement, whereby the pivoted elements of the workpiece feeding device 8 do not collide with the cover 82. The lid is also positively guided and pivotable via a coupling mechanism. Furthermore, the cover 82 is displaceable in the figure 1 along the Z-axis.

To reduce the cycle time during the machining of workpieces by the machine tool 1, the support body 14 is already pivoted into the working space 20, while the workpiece carriers 6 arranged on the workpieces are still processed. After loading and unloading the workpieces are then already processed on the workpiece carrier 6, while the supporting body 14 with the machined workpieces 16 still swings out of the working space 20. Disclosed is a machine tool with a workpiece carrier and one or more tool carriers, which are arranged in application compartments of a machine frame of the machine tool. The machine tool is used to edit workpieces, in particular connecting rods, which in a working space of the

Machine tool to be processed. By a Werkstückzuführeinrichtung the workpiece carrier is loaded and unloaded. For this purpose, the workpiece feeding device has a supporting body, on which machined and unprocessed workpieces can be arranged and exchanged with the workpiece carrier during a loading and unloading process. For flexible arrangement, in particular for space-saving arrangement, the

Workpiece feed with respect to the machine tool is the support body along at least two machine axes movable, in particular pivotable. Thus, it can be flexibly introduced from an outside of the machine tool into the working space, for example along a curve.

LIST OF REFERENCES

1 machine tool

4 tool spindle heads

6 workpiece carrier

8 workpiece feeding device

10 tool carriers

12 application compartment

14 supporting body

16 workpiece

18 coupling gear

20 workspace

21 guide rail

22 drive member

24 end section

26 pivoting member

28 bearing projection

30 bar member

32 side surface

34 pivot bearings

36 rear surface

38 bearing projection

40 bar member

42 holding member

44 end section

45 holding plate

46 guide shot

48 guide shot

50 bottom

52 crank drive

54 crank arm

56 Crank drive

58 end section 60 bar member

62 bearing projection

64 bearing axis

66 crank axle

68 recording page

70 side surface

72 bar member

74 guide rail

76 thighs

78 workpiece holders

80 workpiece holders

82 cover

Claims

claims

1 . Machine tool with a workpiece and a tool carrier (6, 4) for machining workpieces (16), in particular connecting rods, in one

Working space (20), wherein a Werkstückzuführeinrichtung (8) for loading and unloading of the workpiece carrier (6) on the machine tool (1) is arranged, and wherein the Werkstückzuführeinrichtung (8) has a support body (14) for supporting at least one workpiece (16 ), characterized in that the supporting body (14) between a first working position outside the working space (20) and a second working position within the working space (20) forcibly guided in the direction of two machine axes (Y, Z) is moved and / or forcibly guided along a Curve movable, in particular pivotable, is.

2. Machine tool according to claim 1, wherein an orientation of the supporting body (14) changes by the positively driven method.

3. Machine tool according to claim 1 or 2, wherein the

Workpiece feeding device (8) extends approximately parallel to an application surface (12) of the machine tool (1).

4. Machine tool according to claim 3, wherein the first working position of the supporting body (14) adjacent to the application surface (12).

5. Machine tool according to claim 3 or 4, wherein the at least one application surface (12) is an underside of the machine tool (1).

6. Machine tool according to one of the preceding claims, wherein the support body (14) has a receiving side (68) for loading and unloading of the at least one workpiece (16), wherein these in the first working position outside the working space (20) of the machine tool (1) facing away and in the second

Working position within the working space (20) facing the workpiece carrier (10).

7. Machine tool according to one of the preceding claims, wherein the support body (14) one or more receptacles for the workpiece carrier (6) to be supplied workpieces (16) and one or more receptacles (78) for the workpiece carrier (6) abzunehmende machined workpieces (16). has, wherein the workpiece carrier (6) has the same number of shots.

8. Machine tool according to one of the preceding claims, wherein the supporting body (14) via a coupling or gear transmission (18) is forcibly moved.

9. Machine tool according to claim 8, wherein the coupling gear (18) along the first machine axis, in particular the Z-axis, movable

Drive member (22), wherein on this a rotatable about the second machine axis, in particular the X-axis, mounted pivot member (26) is arranged, which serves as a guide of the support body (14) in the radial direction of the second machine axis, wherein the support body (14 ) and the drive member (22) with a second order

Machine shaft rotatably mounted rod member (30) are connected, and wherein the pivot member (26) via a about the second machine axis rotatably mounted rod member (40) with a holding member (42) is connected.

10. Machine tool according to claim 9, wherein the drive member (22) via a rod member (60) with a crank arm (54) of a holding member (42) arranged crank drive (52) is connected.

1 1. Machine tool according to claim 10, wherein in the two

Working positions of the crank arm (54) is arranged approximately in a same axis.

12. Machine tool according to one of claims 9 to 1 1, wherein the drive member (22) and the holding member (42) along a guide (21), in particular along the first machine axis, are movable.

13. Machine tool according to one of the preceding claims, wherein the Werkstückzuführeinrichtung (8) relative to the working space (20) with a

Cover is coverable.

14. Machine tool according to claim 13, wherein the cover (82) is positively controlled and in the process of the support body (14) opens in the direction of the second working position and closes in the direction of the first working position.

15. A method for a machine tool (1) according to one of claims 1 to 14, wherein during a machining process of the at least one workpiece (16) by the workpiece and tool carrier (6, 10) in the working space (20) of the support body (14) Workpiece feeding device (8) in the working space (20) or is moved out of this.