WO1986007557A1

WO1986007557A1 - Wood shaping machine

Info

Publication number: WO1986007557A1
Application number: PCT/EP1986/000349
Authority: WO
Inventors: Adalbert Lachhammer
Original assignee: Georg Ott Werkzeug- Und Maschinenfabrik Gmbh + Co.
Priority date: 1985-06-18
Filing date: 1986-06-11
Publication date: 1986-12-31
Also published as: DE3521729C2; EP0259329A1; DE3521729A1

Abstract

A universal wood shaping machine, with a machine bed (1) and a vertically-adjustable cutter spindle (3), the positioning of which in relation to a support table (94) can be varied by means of a setting device. The spindle (3) is oriented parallel to the support table (4) which is in the form of a rotary table (4) and carries, as the workpiece support, a two-part sliding table (25, 26), the parts of which can be rotated and adjusted by at least 45o around a pivot axis (37, 38) perpendicular to the support table (4). The shaping machine can be used for rectangular transverse shaping, for angular-transverse shaping, for longitudinal shaping and semi-circular shaping. Only a few manual movements are required for the re-setting operations.

Description

Wood milling machine

The invention relates to a 'wood milling machine according to the preamble of claim 1, as used primarily for the processing of solid wood

Is used and e.g. For the production of

Profiled wood or rung connections is used.

A known milling machine of this type is the table milling machine, in which a horizontal table is penetrated by a substantially vertical spindle which can accommodate a set of profile milling cutters and can be pivoted in a vertical plane. The workpiece, such as a blank to be profiled, is guided along the tool in a horizontal direction, which, for example, creates a groove. The spindle can be inclined to expand the range of profiles that can be produced with a milling cutter set. This milling machine is not only relatively limited in terms of its working width, which is approximately 100 mm, but also in terms of its working area. For example, with this table milling machine it is not possible to produce profiled timber, for example balcony balusters, in which the profile varies in the longitudinal direction without an elaborate support structure and in an economical manner. In order to be able to machine such workpieces economically, special wood profiling machines had to be used, but these could not be used for other purposes.

This represents a considerable economic burden, in particular for a woodworking company of medium and small size, since both machines cannot generally be fully utilized. The invention is therefore based on the object of providing a wood milling machine which can be used universally and economically for all common milling work in a carpentry or carpentry.

This object is achieved by the features specified in the characterizing part of patent claim 1.

According to the invention, a universal wood milling machine is created, which, by means of the simplest conversion steps, is used both for right-angled cross-milling, which is required for conventional rung milling, and for double-sided angular cross-milling, moreover for longitudinal milling to produce a groove in a profiled timber and Finally, round arch milling with simplified and safe workpiece guidance can also be used. This has the particular advantage that the two-part sliding table can be used to ensure the operational safety of the milling machine to be raised by limiting the displaceability of a sliding table part when inserting the workpiece to be machined in such a way that the milling tool remains covered by this sliding table part. Another particular advantage of the universal milling machine according to the invention is that the working width of the spindle can be increased considerably, which further benefits the economy of the milling machine. In addition, the sliding table parts can be used in a variety of ways, for example in the case of right-angled transverse milling as clamping tables for ^" fixing the workpiece and in longitudinal profile milling or throats as lateral workpiece guidance. In conjunction with a suitable pressure bridge, the universal Use milling machines as a multi-blade circular saw, which can further increase the economy of this machine.

The arrangement of the machine parts according to the invention not only benefits the economy of the machine, but also operational reliability, which has already been described above in connection with the transverse milling processes. Particularly when the milling machine according to the invention is operated as a round arch milling machine, the special effect in the field of operational safety is shown that even very difficult to handle workpieces such as, for example, arched doors, are completely safe, and with little effort by the operator can be processed, since the workpieces can lie flat on the tool table. This has the additional advantage that the degree of accuracy of production can also be increased, the production process also being independent of the profile width. Another particular advantage of the subject matter of the invention is that it is possible to produce stair railing balusters with very little effort, in which the profile profile is adapted to the inclination of the stairs. It is not necessary to form the provided on the milling-spindle cutter set particularly and also the setting of the inclination angle can be made very safe and precisely by the two sliding table parts is suitably determined only the setting ^'.-

Advantageous embodiments of the invention are the subject of the dependent claims.

In order to make the feed of the workpiece as smooth as possible during the cross milling process, it is advantageous to fasten the sliding table parts on guide heads. which, for example, have a spherical sleeve bearing. In this case, it is particularly advantageous to develop the milling machine according to claim 2. The displaceability of the guide shaft relative to the support table makes it possible to work with a relatively short guide shaft, since this can be moved telescopically out of the support table as required, so that a sufficient feed path is provided even with inclined sliding table parts.

With the development according to claim 3, there is a clear separation of the guide elements, which opens up the possibility of optimally coordinating the individual functional surfaces with the respective mode of operation, as a result of which the operational reliability of the machine can be increased. A very clean and safe guidance of the sliding table parts is obtained when they are supported by two guide heads on different sides of the support table, as is the subject of claim 4. Due to the displaceability of the further guide shaft, which in turn can be carried out via a guide rod and a guide carrier according to claim 3, a relatively short guide shaft can also be used on this side, as a result of which not only the expenditure on device technology can be kept small, but can also be ensured. that no cantilevered machine parts contribute to an unnecessary increase in the risk of injury.

If the further guide head is part of a sliding block guide for the respective sliding table parts, the conversion process of the milling machine is additionally simplified.

The development according to claim 6 is particularly advantageous in the event that the milling machine is used for longitudinal profile milling or fillets of a solid wood. By locking the guide heads, the distance between the two sliding table parts can be matched exactly to the size of the workpiece to be machined, which also gives the possibility of locking the sliding table parts at any point, so that the sliding table parts can also be used in this work phase. The sliding table parts are preferably moved to where the milling cutter (s) in question are to engage the workpiece, thereby ensuring good utilization of the generally double-sided usability of a milling cutter. The further developments according to patent claims 7 to 9 are intended to reliably clamp the sliding table parts, which can also have a considerable weight, with the relevant guide head.

If the guide heads carrying the pivot axes of claim 10 are further developed, the pivot bearing is relieved on the one hand and on the other hand the prerequisite is created for using. simplest means an adjustment scale can be integrated in the area of the swivel axis.

With the clamping nuts according to claim ll ^, in particular in cooperation with the clamping nuts according to claim 9, a secure fixation of the sliding table parts in relation to the guide heads can be realized.

The gradual rotation of the turntable according to claim 13 enables the tool to be converted from longitudinal milling operation to cross milling operation and vice versa in the simplest of steps, for which purpose a manually actuable locking pin is preferably provided, which engages in a recess in a turntable.

The development according to claim 15 not only facilitates the operation of the milling machine according to the invention, but it also contributes to a substantial increase in operational reliability, in particular in the event that the milling machine is used to cross-mill at right angles or at an angle. With the locking and setting rail, it is in fact possible to completely lock the sliding table part facing the operator before the start of the milling feed, for example by the locking and setting rail is attached to the guide shaft or on the guide rod, and to limit the still free displacement stroke of the sliding table part facing away with the adjustable stop so that this sliding table part always covers the already rotating milling tool when the workpiece is inserted between the mutually facing end faces of the sliding table parts. When the workpiece is inserted, the part of the sliding table removed. moved against the workpiece, so that the workpiece 0 is now clamped between the two sliding table parts, for which purpose, for example, a push handle is used. If the locking and setting rail is released, both table parts can be guided together with the workpiece over the milling tools. 5

The development according to claim 18 ensures with very simple cost-engineering measures that the clear height of the sliding table parts 0 above the support table is adjustable so that an adjustment to the milling depth can be made. The flange plate is preferably designed in such a way that it does not protrude beyond the level of the support table when the sliding table parts are removed, “which simplifies the conversion handles for operation as a round arch milling machine.

If a recess claim is in the table for receiving a table insert provided according to 19, _Q is a prerequisite for a very light Zugänglich¬ ness of the tool created so that the tool change can be made faster. This recess also serves to accommodate various tool inserts, such as those used for operation

, κ are required as a round arch milling machine.

If the sliding table parts have devices for fastening a hold-down bridge, which on the the support table facing side preferably has pressure rollers, even very wide workpieces can be processed completely safely. In addition, this configuration even opens up the possibility of operating the universal milling machine as a multi-blade circular saw.

Further advantageous embodiments are the subject of the remaining claims.

Several exemplary embodiments of the invention are explained in more detail below with the aid of mathematical drawings. Show it:

1 is a perspective view of a first embodiment of the wood milling machine,

2 is a perspective view of the in Fig.

1 shown milling machine from a viewing direction offset by 90 ^° with respect to the view according to FIG. 1, the sliding table parts being one intended for angular transverse milling

3, a perspective view corresponding to FIG. 2 of a further embodiment of the wood milling machine according to the invention, FIG. 4 a schematic diagram with which the kinematics of the wood milling machine according to the invention is to be illustrated, FIG. 5 a perspective partial view a central region of the support table of the milling machine shown in Fig.l, and Fig.6 is a perspective view of the detail "V" in Fig.l.

Fig.l shows a universal wood milling machine, which with a machine bed 1, in which a drive motor 2 is accommodated, which drives a milling tool spindle 311. The milling tool spindle 3 is adjustable in height Machine picture 1 arranged and is driven for example at a speed of βOOOU / min. The spindle 3 runs parallel to the output shaft of the motor 2, and it has, for example, a useful length LN of 26θmm.

The machine bed 1 has a cuboid structure and carries a rectangular or square rotary table 4, which rotates about a vertical axis 5, which is schematically shown in FIG

Fig. 1 and Fig. 4 is indicated, rotatable and lockable in angular positions of 0 ^" , 90 ^* , 180 ^* , 270 ^* and 360 ^° . In the middle of the support table 4 designed as a turntable, a recess 6 is provided, in which - as can be seen in detail from FIG. 6 - a table insert 7 is interchangeably received.

The milling tool spindle ^' 3 is capable; to accommodate a plurality of form set milling cutters with which a predetermined profile contour can be milled into the solid wood workpiece to be processed. As can also be seen from FIG. 6, the table insert 7 has a multiplicity of adjustable and displaceably guided lips 8a to 8d, with which selected areas of the milling tool spindle can be covered if necessary. In the illustration according to FIG. 6, only the lips 8b fulfill this covering function, which increases the operational reliability of the milling machine.

In the following, the machine according to Fig.l will be discussed in more detail, in which the turntable 4 is locked in such a position that a lateral longitudinal edge 9 runs parallel to the milling tool spindle. The longitudinal edges 10 and 11 perpendicular to this (see in particular Fig. 5) form a receptacle for a displaceable mounted guide rod 12 or 13, the length of which corresponds approximately to the edge length of the turntable 4. As can be seen from FIG. 5, the turntable 4 carries guide supports 14 in the corner regions, which have an essentially C-shaped cross section. This guide bracket 14, like the guide cross section in the central region of the longitudinal edge of the rotary table 4, positively engages around the respective guide rods 12 and 13, so that a type of T-guide is formed for the guide rods. The guide supports 14 also have clamping devices 15 in the form of star grip screws with which the guide rods 12 and 13 can be locked or clamped relative to the rotary table 4 after telescopic movement.

Trusses 16 are fastened to the end sections of the "guide rods 12 and 13, on which a guide shaft or guide axis 17 or 18 aligned parallel to the guide rod is fastened. On each guide shaft 17 and 18, two guide heads are each slidably supported, whereby in the Drawings only two guide heads 19 and 20 are shown in the region of the longitudinal edge 10 of the rotary table 4.

The guide heads 19 and 20 each have a cylindrical tube 21, which is preferably guided on the guide shafts 17 and 18 via a roller bearing. At one end, this tube 21 merges into a clamping sleeve Z2, which receives a star grip clamping screw 23. A flange plate 24 is provided on the tubular body 21, as can be seen in detail from FIG. 5, via which one side of a sliding or clamping table part 25 or 26 is supported in a height-adjustable manner. The sliding table parts 2 and 26 form a holder for the workpiece to be machined and for this purpose each have a clamping and guide bar 27 or 28 on which a push handle 28 or 29 is formed. For height-adjustable support. he sliding table parts are provided in the flange plate 24 with two elongated holes 30, through which a threaded bolt 31 projects, which sits firmly on an angle plate 32, which can be fastened to the relevant sliding table part via three clamping screw bolts 33, 34 and 35. The threaded bolts 31 carry a star grip or on the outside

Wing nut 36 um. the angle plate 32 in the desired

To clamp height with the flange plate. 24, which is shown in detail in the illustration according to FIG.

On the side of the sliding table parts 25 and 26 facing the guide rod 12, the clamping screw bolts 34 protrude through a cylindrical recess, so that these clamping screw bolts define a pivot axis 37 and 38 for the relevant sliding table part 25 and 26, respectively. The ^■ other two Klemmschrauben¬ bolt on this side of the sliding table parts protrude by a circle segment slot 39 and 40. All three clamping bolts bear on the top of a star grip nut 41, 42 and 43, with the not shown through a detail thrust washer a strain with the Angle plate 32 can be effected.

On the other side of the sliding table parts 25 and 26, the three clamping screw bolts 33 to 35 are in contact with the sliding table parts as follows. Contact: The respective central clamping screw bolt 34 projects through a central slot 44, the axis 45 of which extends through the pivot axis 25 and 26, respectively. The other two clamping screw bolts 33 and 35 engage in additional stabilizing slots 46 and 7 which, as can be seen from the figures, run inclined at a certain angle to the central slot 44 such that when the sliding table parts are pivoted about their respective pivot axis 25 or 26, the clamping screw bolts 33 and 35 cannot become jammed. As can be seen from the illustration according to FIGS. 2 and 3, the three clamping screw bolts 33 to 35 project through a pressure plate 48 on this side of the sliding table parts, which can be pressed against the upper side of the sliding table parts 25 and 26 by three star grip nuts 49 to 51.

It can be seen from the above description that when the star grip nuts 41 to 43 and 49 to 51 are loosened, the sliding table parts 25 and 26 can be pivoted freely about the respective pivot axes 37 and 38, the clamping screw bolts 33 and 35 in the circular segment slots 39 and 40 on the one hand and in the stabilizing slots 46 and 47 on the other hand can slide. The pivotability is preferably selected so that it is at least 45 ° in both directions and for this purpose it is advantageous to provide an angle scale in the region of the pivot axes 25 and 26. The machine according to FIG. 1, in which the sliding table parts are pivoted through an angle of approximately 45 ^° , is shown in FIG. From this figure it can also be seen that if the sliding table parts are pivoted sufficiently large, provision must be made for the guide rods 12 and / or 13 to be unlocked with respect to the guide carrier 14 so that the one guide rod is moved to one side (according to FIG. 2 to the front) ) and the other guide rod can be pulled out to the other side. As soon as the desired swivel angle is set, the guide rods can be clamped again in the guide carrier.

From the above description it is clear that a so-called right-angled cross-milling process is carried out with the milling machine structure according to FIG can be. To this end 27 of the operator's left slide table part is applied to the clamping and guide strip facing, that is, ^'according to Fig.l 25 applied an to be processed solid wood and then the second sliding table portion 26, 5 is used according to which the workpiece is clamped between the two shift handles. Finally, the entirety of the sliding table parts 25 and 26 and the workpiece is pushed over the support table 4, the workpiece 0 coming into engagement with the set milling cutters. To the

To increase the operating safety of the milling machine according to the invention, an additional securing device is described below.

This safety device mainly consists of 5 a locking and adjustment rail 52, which is provided on at least one side of the turntable 4. This adjustment rail is formed by a flat rail, .the on one .pages two Klemmverbin¬ compounds in the form of clamping screws or clamping nuts 0 53 _nd 54 with the underside of said one Schiebetisch¬ part 25 associated guide head 19 is connected. Otherwise, the locking and adjusting rail 52 is provided with a central slot 55 through which a pin or bolt 56 protrudes, which is firmly connected to the underside 25 of the other guide head 20 of the same guide shaft 17. Beyond the pin or bolt, the locking and setting rail 52 carries an adjustable stop 57, which can be adjusted at any point by means of a clamping screw 58. As will be described in more detail below, it is advantageous if the pin or bolt 56 is provided with a thread in the region in which it extends through the slot 55, so that it can receive a clamping nut 59. 35

1 and 5, the locking and adjusting rail 52 bears one on the side facing away from the stop 57, for example Resilient locking tab 60, which has a recess 61 for engaging in a locking pin 62 on the cross member 16 and an operating handle

63 has. The method of operation of this security device is described below with the aid of the schematic sketch according to FIG. 1, for reasons of simplification only the mechanism on one side of the turntable 4 is to be discussed. Provided that the guide rod 12 is jammed in a predetermined position in the longitudinal edge 10 of the turntable 4, the locking tab 60 can be coupled to the locking pin 62 by means of the handle 63, as a result of which the guide head adjacent to the handle 63 and thus the associated slide - Or clamp table part 25 is immovable. The stop 57 on the locking and adjusting rail is now set so that the displacement movement of the other guide head 20 is limited, for example, by the sift or bolt 56. The maximum possible displacement is set so that there is a maximum opening dimension Mg for the sliding table part 26 facing away from the operator, which is adapted on the one hand to the width of the workpiece to be machined and is positioned with respect to the position so that when the gap between the both Kiemm¬ and guide strips 27 still all milling tools

64, which are indicated by dash-dotted lines in FIG. 4, remain covered by the sliding table part 26 facing away. In this way it is completely reliably prevented that the operator can accidentally reach into the already rotating tool.

When the workpiece is inserted, the sliding table part 26 facing away is moved in the direction of the arrow designated 65 in FIG. 4 against the workpiece, which is now clamped between the two push handles is. Now the actuation handle 63 of the

Locking pin 62 out of engagement with the recess

6l brought, whereby both sliding table parts 25 and

26 can be moved freely on the ball bushing guide and thus can carry out the machining feed.

The safety device works in the same way in the event that the sliding table parts 25 and 26 have a certain angle of attack with respect to the milling tool spindle 3, which e.g. is shown in FIG. In this case "it is only necessary to ensure that the telescopically extendable guide rod 12 is displaced sufficiently, which is to be indicated by the double arrow 66 in FIG. 4. If the displacement is sufficient, the guide rod is then locked so that the locking means as well and adjustment rail 5 can be fixed in the correct place, which is shown schematically in FIG. 2, from which it can be seen that the guide rod 12 is moved towards the operator and the other guide rod 13 is displaced away from the operator.

The various modes of operation of the universal wood milling machine will now be described.

1. Right-angled cross milling

This process is required, for example, for the production of balcony balustrades or banisters, but also for normal rung milling. The turntable 4 is set so that it assumes the position shown in FIG. 1 with respect to the machine bed 1 and thus the milling tool spindle 3. In this position, the turntable is locked over the turntable, so that the sliding table parts 25 and 26 perpendicular to a vertical plane through the spindle axis can be moved. Depending on which set milling cutters are attached to the spindle, there are now different ones

Lips 8a to 8d of the table insert 7 are displaced relative to one another in order to cover all those areas of the tool which should not come into engagement with the workpiece. Now the height of the tool spindle is set with the dash-dot hand crank 67 and then the sliding or clamping table parts 25 and 2 ^' 6 are set in height, for which purpose the angle plates 32 are displaced via the wing nut clamping connection 31 or 36. As soon as this setting process has been carried out, the limit position of the sliding table part 26 facing away from the operator is determined such that it just barely covers the tool; Now the other sliding table part

25 move so far that a maximum space for receiving the workpiece to be inserted remains between the two sliding table parts. In this position, the two guide rods 12 and 13 are now jammed. 0 After the locking pin 62 has been snapped into the recess 61, the stop 57 'can be ascertained, so that the milling machine is ready for this work operation and is operated as described above with reference to FIG. 5

2. Angle cross milling

This process is to be carried out, for example, if banister balusters are to be produced with a predetermined profile, which adapts to the gradient of the stairs. However, this operation is also to be used when a rung connection is to be made for windows in which the windows are divided into diamond segments. This 5 process is also referred to as helical rung milling.

In order to be able to carry out this operation, the star grip nuts 41 to 3 and 49 to 51 are loosened. Furthermore, the clamping devices 15 for the guide rods 12 and 13 are released, after which the two sliding table parts with the aid of the ones not shown

Angle scale can be pivoted into a desired Angle. Now the above-mentioned star grip nuts are tightened again and, after a suitable adjustment of the required displacement stroke, the guide rods 12 and 13 are clamped again with the sliding table, after which the same adjustment of the stop of the locking and adjustment rail 5 can be carried out as above has already been described.

3. Longitudinal milling

This procedure is used, for example, when a longitudinal profile is to be milled into a solid wood, which is also referred to as a ^' fillet. For this purpose, the turntable is pivoted from the ^* dargestellten- in Fig.l position by an angle 'of 90 to the positions shown in Figure 3 position and locked again in this position. Now depending on which cutter set is carried by the spindle and which work is to be carried out, the two sliding table parts 25 and 26 are shifted and adjusted so that between 5 the two clamping and guide strips 27 a working space 68 is created, which is a suitable guide for the workpiece to be inserted. For this purpose, the guide heads 19 and 20 are fixed on the guide shafts 17 and 18 via the clamping sleeves 22, so that when the guide rods 12 and 13 are clamped securely, lateral guidance of the workpiece to be inserted is provided. Now the individual lips 8a to 8d are again set so that only those sections of the tool that are absolutely necessary for processing 5 the workpiece are exposed and the workpiece, for example the bar to be grooved, is now between pushed the two clamping and guide strips 27 so that they can be processed safely, for which purpose only the operator has to press the solid wood from above.

A particular advantage of this mode of operation of the machine is that the working space 68 can be freely adjusted so that it can be moved exactly where the milling tool is to be engaged with the workpiece. In this way, the usually double-sided usability of a form milling cutter can be optimally used.

In this position of the universal milling machine, very wide masquerade wood can also be processed, which is required, for example, when manufacturing a chair seat. For this purpose, the machine has additional equipment in the form of a hold-down or pressure bridge 69 which can be screwed to the two sliding tables 25 and 26 via threaded holes 70 (see FIGS. 1 and 2). The pressure bridge 69 is preferably attached to the table parts 25 and 26 in a height-adjustable manner in order to be able to adapt to the height of the solid wood to be processed. On the tools facing side of the nip bridge preferably sprung mounted Ahdruckrollen 71 are provided, ^'the Betriebs¬ safety of the milling machine further benefit.

With the setting of the milling machine shown in FIG. 3, it is even possible to operate it as a multi-blade circular saw.

A pressure spring device in the form of a helical spring can be used as further accessories for the milling machine in the above-described mode of operation find that ensures that the inserted tool does not kick back and rattles. This accessory is particularly advantageous when round or corner bars are processed.

4. Round arch milling

A further mode of operation of the milling machine described above is made possible when the sliding table parts 25 and 26 are completely removed from the rotary table 4. For this purpose, only the star grip nuts 41 to 43 and 49 to 51 have to be removed, as a result of which the support turntable 4 is freely accessible. Now the table insert 7 is removed and replaced by ° a special insert which has spring-mounted guide rollers for a straight or curved bar to be profiled. The bar to be processed, for example the arch of a window or. Door case is now introduced in the special-use _U 0 nd lying, that is pushed in a horizontal plane through the insert, wherein a processing of the solid wood from below. This machining increases both the accuracy and the operational safety, since the operator only has to exert small forces to move the workpiece to be machined through the special milling insert. The large forces are reliably absorbed by the rotary table 4.

The invention is not restricted to the exemplary embodiments described above. In a departure from the illustrated embodiments, the support turntable can also be inclined or its inclination can be adjusted.

5 It has been found that the above-described wood milling machine easily with tool speeds around 6000 rpm with a useful length of the milling spindle of 26θmm. The maximum tool diameter can be at least 160 mm, the adjustment range of the tool holder being at least 120 mm. In the case of a prototype that had already been completed, the working width for longitudinal milling could be set to 500mm and the working width for transverse milling to 24θmm.

The invention thus creates a universal wood milling machine with a machine bed and a height-adjustable milling tool spindle, the pitch of which can be changed relative to a support table by means of an adjusting device. The spindle is aligned parallel to the support table, which is formed by a turntable and carries a two-part sliding table as a workpiece holder, the parts of which can each be rotated and adjusted by at least 45 ^° 'about a swivel axis perpendicular to the support table. This milling machine can be used for right-angled cross-milling, for angular cross-milling, for longitudinal milling and for round-arch milling, only a few operations being required for the respective setup processes.

Claims

1. Wood milling machine, with a machine bed and a ^' vertically adjustable milling tool- _c spindle whose pitch relative to a support table which carries a workpiece holder can be changed via a Einteilvor¬ device, characterized in that -. : the spindle (3) is aligned parallel to the support table (4) _n , the support table is formed by a rotary table (4), and the workpiece holder has a two-part sliding table (25, 26), the parts of which are each one by ₅ pivot axis (25 or 26) running perpendicular to the support table (4) can be rotated and adjusted by at least 45 ^° .

2. Milling machine according to claim 1, characterized gekennzeich¬ 0 net that the pivot axes (37, 38) of the sliding table parts (25, 26) are each formed on a guide head (19 or 20) which is slidably on a first guide shaft (17) sits, which in turn can be moved parallel to the support table (4). 5

3. Milling machine according to claim 2, characterized gekennzeich¬ net that the guide shaft (17) is carried by a guide rod (12) which runs in a guide carrier (14) "of the turntable (4).

4. Milling machine according to claim 2 or 3, characterized in that each sliding table part (25, 26) is assigned a further guide head which is slidably mounted on a further guide shaft (18) which is displaceable parallel to the first guide shaft (17).

5. Milling machine according to claim 4, characterized gekennzeich¬ net that the further guide head part of a link guide for the pivot axis (25 or

26) opposite end of the respective sliding table part (25, 26).

6. Milling machine according to one of claims 2 to 5, characterized in that the guide heads (19, 20) relative to the guide shaft (17, 18) and the guide rods (12, 13) can be locked relative to the rotary table (4).

7. Milling machine according to claim 5- or 6, characterized in that the further guide head carries a sliding pin ..34) which engages in a guide slot (44) of the sliding table part (25, 26).

8. Milling machine according to claim 7, characterized gekennzeich¬ net that the further guide head carries at least one additional stabilizing pin (33, 35) which engages in a further guide slot (46, 47).

9. Milling machine according to claim 7 or 8, characterized in that the projecting through the slots pins (33 to 35) on the guide slots (44, 46, 47) projecting side carry a thread, by means of which a clamping element (48) on each Clamping nuts (49 to 51) can be pressed against the sliding table part (25, 26).

10. Milling machine according to one of claims 2 to 9, characterized in that the guide heads (19, 20) carrying the swivel axes (37, 38) carry at least one further guide pin (33, 35) for the in the sliding table part (25, 26 ) an arcuate backdrop (39, 40) is formed.

11. Milling machine according to claim 10, characterized gekenn¬ characterized in that two guide pins are provided which have a thread on their link - (39, 40) projecting end portion, each carrying a clamping nut (41 or 43).

12. Milling machine according to one of claims 2 to

11, characterized in that the sliding table part (25 or 26) carries an angle setting scale in the region of the pivot axis (37 or 38).

13. Milling machine according to one of claims 1 to

12, characterized in that the turntable (4) can be rotated in steps by an angle of 90 ^° .

14. Milling machine according to claim 13, characterized gekenn¬ characterized in that in a locked rotational position, the direction of displacement of the sliding table parts 025, 26) runs parallel to the milling tool spindle (3).

15- Milling machine according to one of claims 4 to 13, characterized in that the guide heads (19) associated with a sliding table part (25) carry a locking and adjusting rail (52) which extends parallel to the guide shaft (17) and has a slot

(55) for receiving a bolt fastened to the guide head (20) of the other sliding table part (26)

(56) is provided, and on the end section projecting beyond the bolt (56) carries an adjustable stop (57) for the associated guide head (20).

16. Milling machine according to claim 15, characterized gekenn¬ characterized in that the bolt (56) on the slot (55) projecting portion carries a thread on which a clamping nut (59) is seated.

17- milling machine according to claim 15 or 16, characterized in that> the locking and adjusting rail (52) carries at least on the side facing away from the stop (57) a locking body (60) which manually engages and disengages with a locking Pin (62) of the relevant guide rod (12) can be brought.

18. Milling machine according to one of claims 4 to 17, characterized in that the guide heads (19, 20) each have a tubular sliding element (21) on which a flange plate (24) is provided, via which the sliding table parts (25, 26) can be fastened.

19-milling machine according to one of claims 1 to 18, characterized by a recess (6) in the rotary table (4) for receiving a table insert (7) with a plurality of adjustable tool cover lips (8a to 8d).

20. Milling machine according to one of claims 1 to

19, characterized in that the sliding table parts

(25, 26) devices (70) for fastening a

Have hold-down bridge (69).

21. Milling machine according to one of claims 1 to

20, characterized by the use as a multi-blade circular saw.

22. Milling machine according to one of claims 1 to 20, characterized by the use as a round arch milling machine with horizontal machining of the workpiece.