Machine tool having a multiplicity of stationary tool spindles

Abstract

A machine tool has a multiplicity of stationary tool spindles that are optionally displaceable from a retracted rest position into an extended working position are positioned at various positions in a frame-like stand which defines and comprises machining space, and has a workpiece manipulator by way of which a workpiece support is movable multi-axially in translation and preferably also in rotation. In order to create advantageous loading conditions, it proposed that a loading door is associated with at least one of the leg walls defining the machining space, and that a workpiece support holder, which is equipped with a coupling for the workpiece support, is arranged on at least one, preferably on both, loading door panel fronts.

Claims

1. Machine tool (1) comprising: a tool spindle (3) that is positioned in a stand (2) that defines and delimits a machining space (6), a workpiece manipulator (4) within the machining space (6), for supporting a workpiece and workpiece support (5) while the workpiece is machined by the tool spindle (3), with which workpiece manipulator (4) the workpiece and workpiece support (5) can be moved relative to the tool spindle, wherein the stand (2) includes a plurality of side walls (7) that delimit the machining space (6), the plurality of side walls including a side wall that has an opening therethrough, wherein a loading door (8) having two opposed side panels (9) is provided so as to pivot about a horizontal pivot axis (12) to open and close the opening, and wherein a respective workpiece support holder (10), which is equipped with a respective coupling (11) for coupling to a respective workpiece support (5), is disposed on both of the loading door side panels (9) such that when the opening is closed by the loading door (8), one of the workpiece support holders (10) and its respective workpiece support (5) is located at a transfer position within the machining space (6) while the other of the workpiece support holders (10) and its respective workpiece support (5) is located at a loading position outside the machining space (6), and such that pivoting of the loading door (8) about the horizontal axis (12) is configured to move the one workpiece support holder (10) and its respective workpiece support (5) to said loading position and to move said other of the workpiece support holders (10) and its respective workpiece support (5) to said transfer position; and wherein, from said transfer position, a given one of the workpiece supports (5) and its corresponding workpiece are transferred from the corresponding respective workpiece support holder (10) to the workpiece manipulator (4), for the machining of the corresponding workpiece by the tool spindle (3).

2. Machine tool according to claim 1, wherein a respective additional workpiece support holder (10) is disposed on each of the two loading door side panels (9).

3. Machine tool according to claim 1, wherein the loading door (8) is mounted in the side wall (7) having the opening so as to pivot about the horizontal axis (12), wherein the horizontal pivot axis lies in a plane of symmetry of the loading door (8), and wherein machined workpieces (14) can be freed of chips and/or cooling lubricant when the loading door (8) is pivoted.

4. Machine tool according to claim 1, wherein each of the workpiece support holders (10) are disposed on the loading door (8) in such a manner that each workpiece support holder is disposed lower when in the loading position than when in the transfer position.

5. Machine tool according to claim 1, wherein the loading door (8) is mounted in the side wall (7) so as to pivot by at least 180, using a rotary drive.

6. Machine tool according to claim 1, wherein the loading door (8) is point-symmetrical about the horizontal pivot axis (12).

7. Machine tool according to claim 1, wherein the loading door (8) can be pivoted from the loading position into the transfer position, using a rotary drive.

8. Machine tool according to claim 1, wherein a further door (15) is provided, and wherein the loading door (8) can only be pivoted when the further door is closed.

9. Machine tool according to claim 1, wherein a respective additional workpiece support holder (10) is disposed on each of the two loading door side panels (9), wherein each of the workpiece support holders (10) includes a respective coupling surface for interacting with a corresponding one of the workpiece supports (5), and wherein for the two workpiece support holders (10) that are disposed on one of the side panels (9), the coupling surfaces of those two workpiece support holders (10) lie in a common plane (E).

10. Machine tool according to claim 1, further comprising additional tool spindles.

11. Machine tool according claim 1, wherein the workpiece manipulator (4) can move a workpiece support (5) held thereby multi-axially in translation and also in rotation.

12. Machine tool according to claim 1, further comprising a rotary drive for pivoting the loading door (8) about the horizontal axis.

Description

BRIEF DESCRIPTION OF THE DRAWING

(1) In the drawing, the invention is shown schematically using an exemplary embodiment. The figures show:

(2) FIG. 1 a machine tool according to the invention, in a front view, in partial section,

(3) FIG. 2 a lateral side wall of the apparatus from FIG. 1, with a loading door according to the invention, in an enlarged view at a slant,

(4) FIG. 3 the loading door from FIG. 1 in cross-section, partly in section,

(5) FIG. 4 the loading door from FIG. 3 in section along the line IV-IV from FIG. 3,

(6) FIG. 5 a schematic representation of the rotary drive for pivoting the loading door;

(7) FIG. 6 a schematic representation of a discharge apparatus for conveying machining chips through an opening in the side wall of the frame.

WAY TO IMPLEMENT THE INVENTION

(8) A machine tool 1 is equipped with a multiplicity of stationary tool spindles 3 that are displaceable, if necessary, from a retracted rest position into an extended working position and are positioned at various positions in a frame-like stand 2, and with a workpiece manipulator 4, with which a workpiece support 5 can be moved multi-axially in translation and preferably also in rotation. The frame-like stand defines a machining space 6, which machining space 6 is enclosed by the frame-like stand 2. The frame-like stand particularly comprises four side walls 7, whereby in the exemplary embodiment shown, tool spindles 3 are assigned to three side walls 7.

(9) According to the invention, one side wall, namely the right side wall 7, has a loading door 8 assigned to it.

(10) As can be derived from the exemplary embodiments, workpiece support holders 10 are assigned to both loading door panel fronts 9, which holders are equipped with a coupling 11 for the workpiece support 5. In this connection, two workpiece support holders 10 are disposed on each door loading panel front 9, the coupling surfaces of which holders, interacting with the workpiece support 5, lie in a common plane E. Furthermore, the loading door 8 is mounted in the side wall 7 so as to pivot about a horizontal axis 12 that lies in its plane of symmetry, using a rotary drive that is indicated in FIG. 5. With this rotary drive, the loading door 8 is mounted in the side wall 7 so as to pivot by at least 180. In particular, the loading door 8 as such is symmetrical about the pivot axis 12. As can be derived from FIGS. 1 and 3, the loading door 8 can be pivoted out of a loading position, out of the loading space 13, into a transfer position, in which a workpiece 14 is disposed in the machining space 6, using the rotary drive. Thus, at the same time, a workpiece support 5 with workpiece 14 can be transferred to the workpiece manipulator 4, and a new workpiece can be disposed on the workpiece support holder 10 in the loading space 13, or can be clamped onto the holder. The fact that the loading space 13 forms a kind of loading lock 17 can be derived from FIGS. 3 and 4, for example. For this purpose, as shown in FIG. 1, a further door 15, in the exemplary embodiment shown a roller curtain, is provided on the outside of the loading door 8. Activation of the loading door 8 is only possible when the curtain is closed.