Unit adjustment

1. Technical Field

0001The present invention relates to a einwechselbares tool unit for machining workpieces, particularly in the furniture and construction industries. Such workpieces are preferably made of wood, derived timber products, plastic or the like.

State of the art

0002It is a tool einwechselbares aggregate according to the <patcit id="pcit0001" dnum="EP136385A2"><text>EP 1 36385 A2</text></patcit> known, which permits adjustment of the angle of the tool to the spindle axis A, and pivotal movement of the tool about the tool axis A. The unit for this purpose has a coaxially to the spindle axis A rotatable support member having a pivot about an axis tool holder and a rotationally fixed to the support part or to a machine part connectable adjusting, whereby the adjusting member is connected via a gear to the tool holder and the gear relative motion between the parts translates into a change in the angular position of the tool holder relative to the spindle axis.

0003The <patcit id="pcit0002" dnum="EP1985396B1"><text>EP 985 396 B1 1</text></patcit> relates to a einwechselbares tool assembly comprising a tool holder that a base body of the tool assembly about a first axis C is driven in rotation with respect, and a movably mounted holding element for holding machining tools or tool adapters. The tool unit includes a first pressure fluid channel which communicates with a cavity of the tool holder in connection and in the cavity opens out in a contact area, in which a working tool or tool adapter rests in the clamped state. The pressure fluid passage also communicating with the interface of the tool assembly in conjunction.

0004Compared with known tool aggregates new demands continuously.

0005For example, are to be drilled at different distances when machining workpieces for window elements horizontal drilling. Either this tool aggregates with several drills used at different distances, or the holes are set individually.

0006Furthermore, there are demands for further adjustability of the tools or sensing elements with respect to the workpiece. Although there are here already solutions in which an additional electric motor requires an adjustment to the tool assembly. However, such additional motor increases the weight of the unit, and also requires a separate power supply.

0007In devices that use sensing elements in the form of a touch ring, there is a requirement that on the one hand, the machining tool can be loaded into the unit without interfering with the touch ring, and secondly, the touch ring on this specific router set.

The invention

0008The aim of the present invention is to provide a tool assembly with additional functionality, so adjustments easier and / or new alignment possibilities for the tool unit arise.

0009The subject matter of claim 1 or claim 9 provides this provides a solution. Further preferred embodiments are listed in the dependent claims.

0010The core idea of ​​the present invention, it is here to provide the aggregate itself with an additional adjustment to provide for example an aggregate axis or to define one or more translational degrees of freedom, so that one element of the tool unit can be moved via a transmission in this additional degree of freedom.

0011The respective dependent with respect to the independent claims 1 and 9 dependent claims may be combined with the independent claim each other.

0012A "tool" / "working tool" for the purposes of this application, for example, a machining or non-cutting tool, in particular a drill or milling cutter, cutting blade or the like, or if the tool unit is formed as a gluing unit, a pressure roller or glue spreader.

0013There are various possibilities for driving the gear mechanism:<ul><li>Preferably, the gear mechanism is driven by a rotation of the tool assembly using a locking device about a C-axis of the spindle unit.</li></ul>

0014The transmission mechanism may comprise a clutch which is actuated in particular by means of a compressed air supplied via a C-axle, electromagnetic or motor-driven in order to transmit the rotary motion of a main spindle of the spindle unit in the translational movement of the movable member of the tool unit. The rotation of the main spindle can also be used to drive a processing tool in a different position of the clutch.

0015The transmission mechanism can also be driven by a motor located in the tool unit.

Brief Description of Drawings

0016<dl id="dl0001"><dt>Fig. 1</dt><dd>shows a first embodiment of the present invention</dd><dt>FIG. 2</dt><dd>shows a second embodiment of the present invention</dd><dt>Fig. 3</dt><dd>shows a third embodiment of the present invention</dd><dt>Fig. 4</dt><dd>shows a fourth embodiment of the present invention</dd><dt>Fig. 5</dt><dd>shows a fifth embodiment of the present invention</dd><dt>Fig. 6</dt><dd>shows a first modification of the fifth embodiment of the present invention</dd><dt>Fig. 7</dt><dd>shows a sixth embodiment of the present invention</dd><dt>Fig. 8</dt><dd>shows a first modification of the sixth embodiment of the present invention</dd></dl>

Detailed Description of the Preferred Embodiments

0017Various embodiments of the present invention are explained in detail. Modifications of individual characteristics of certain embodiments can this be combined with other embodiments to provide new configurations.

0018<figref idrefs="f0001">Fig. 1</figref> is a perspective view of an exchangeable tool unit 10, which can be connected via a so-called electronic module 500 with a milling spindle 100th With the electronics module 500, it is possible here to supply the tool unit 10 with electrical energy. However, the arrangement is conceivable even without the electronic module 500th

0019In the area of ​​the lower portion of the electronics module 500, which is attached as a modular unit to the spindle 100, a recording of the spindle 100 is provided in the HSK tool holder 101 can be substituted in the tool assembly 10th

0020Further, the milling spindle in the present embodiment 100 includes a lock 520 for locking an outer portion of the housing 12 of the tool unit 10 relative to the spindle 100. The locking device may also be mounted on the machine frame or carriage which is arranged on a guide device for the milling spindle 100 ,

0021In this embodiment, the tool assembly 10 is at least one axle pin 13 (possibly three axle) connected when loading into a receptacle of the spindle with a recording of the C-axis 102 of the milling spindle 100th As explained below can be transferred to an interior portion of the tool unit 10 by means of the C-joint pin 13 a torque of the generator axis.

0022The tool unit 10 comprises in the present embodiment, three milling tools 200 which are 10 arranged in the installed state of the tool assembly in a horizontal plane. The cutters 200 are operated in rotation, and the relative distance of the respective machining tools to each other can be adjusted as explained below.

0023In order to adjust the distance of the milling tools to each other, a transmission mechanism used in the tool unit 10, via which a rotational movement can be mechanically carried out in a translational adjustment movement. there are various options that are listed below for the drive of the transmission mechanism. According to the invention, the tool assembly comprises at least one of the mechanisms described below.

0024Firstly, the transmission mechanism can be driven by a recorded in the tool unit 10 motor, which is supplied for example by means of the electronics module 500 with energy.

0025The adjusting movement of the milling tools 200 can also be achieved by means of an engagement of the detent 520 at an outer portion of the housing 12 of the tool unit 10 by a rotary motion, which rotary motion by the C-axle pin 13 to an inner housing portion of the tool unit 10 is transmitted. Thus, the inner housing portion of the tool assembly rotates relative to the outer frame portion.

0026A third way to drive the gear mechanism is possible through the drive of the main spindle of the milling spindle 100, with a spindle of the tool unit 10 is rotationally driven. In tool unit a clutch is provided, which is activated, for example controlled by compressed air. In the present embodiment, the compressed air is supplied through a 103 extending within the C-channel of the joint pin of the milling spindle 100 or the C-axis directed into the tool unit 10th Said coupling can also be designed as sliding clutch. Alternatively, it is also possible to operate the clutch motor, the required for the drive of the motor power is supplied for example via the electronics module 500 is available.

0027Overall, therefore, three different options are provided, which can be used to drive the gear mechanism. Each one of these alternatives is at a certain tool unit used. The alternatives mentioned for driving the transmission of a tool assembly are correspondingly implemented also in the embodiments described later.

0028In the case of the latter alternative, the tool unit 10 is provided with a coupling, with the rotational movement of the main spindle (HSK interface) will either be forwarded in an adjusting movement into a rotary movement of the milling tools 200 or. Thus, a drive can be used to either perform a machining operation or to make an adjustment.

0029As mentioned previously, the tool unit 10 includes a HSK holder 101, which is incorporated in a corresponding receptacle of the milling spindle 100th Further, the housing 12 is provided, on which the cover at least a C-axle pin 13 parallel to the orientation of the spindle eleventh At an opposite to the HSK holder 101 side of the housing 12, a guide 14 is provided, are accommodated movable in translation on the toolholders 15th

0030In the same toolholders 15 cutters 200 are in the present embodiments, substantially taken (see also <figref idrefs="f0001">Fig. 1</figref>), To contribute correspondingly large holes in certain distances from each other simultaneously. Depending on requirements, but also different milling tools can be added to the record 200th

0031In <figref idrefs="f0002">FIG. 2</figref> is a second embodiment of the present invention shown with the corresponding elements and components, in which the first and second embodiment is the same or similar, provided with corresponding reference numerals.

0032In particular, the second embodiment differs from the first embodiment, to a housing 22 differs with a view of the tool assembly 10a, which has in the present embodiment, a horizontal probe element 25, an upper, vertically displaceable feeler element 26, and a lower, vertically displaceable feeler element 27, the tool assembly 10a mounted. The horizontal probe element 25 has an elongated opening through which the work spindle 28 of the tool assembly 10a. At the work spindle 28 (not illustrated) is mounted machining tool, with in particular the narrow side of a plate-shaped workpiece can be machined.

0033Again, the tool assembly 10a comprises a gear mechanism that allows alternatively to move the sensing elements, or to operate the processing tool. Thus, a main spindle provided by the rotary movement for either a rotational movement of the machining tool or one of the translational movements of the sensing elements 25-27 are used.

0034Switching between a drive of the machine tool on the one hand and the adjustment of the sensing elements 25-27 is caused for example by an aforementioned coupling. Alternatively, an adjustment will also power tools, or using the lock in combination with a torque transfer on the item or the C-axle 23 ..

0035<figref idrefs="f0003">Fig. 3</figref> shows a further embodiment of the present invention, in which a tool unit 10b is loaded into the receptacle of a spindle 100th

0036The tool assembly 10b comprises a housing 32 to which an adjustable in a translational direction Tastglocke 35 is attached. Starting from the housing 32 extends in a vertical direction, a C-axle 33. In addition to the illustrated C-axle 33 also pivot pin can be provided.

0037Within the housing 32 of the tool unit 10b, a transmission mechanism is provided, the 100 allows, for example, a movement of the main spindle of the spindle in either a rotational movement of the captured in a receptacle of the tool assembly 10b processing tool 200b (for example, router), or in a vertical adjustment of Tastglocke 35th The other two alternative ways to drive the gear mechanism may be eligible for the tool unit 10b applies.

0038The Tastglocke 35 includes a sensing element 36 (touch ring), which is the substitute processing tool surrounds 200b and allows a sampling over a workpiece. The probe element 36 is slidably supported by the movement of Tastglocke 35 relative to the housing 32nd Thus, it is possible to adjust the scanning element 36, for example, during a tool change in translation, and thus expose a greater portion of the machining tool. In this way it is possible to shorten the set-up times for different sized cutting tools. Further, it is not necessary to provide a special Tastglocke for a particular processing tool.

0039It is also possible to perform the relative displacement between the sensing element 36 and the processing tool 200b due to processing. When using set tools can therefore with a machining tool multiple profiles are set without performing a tool change.

0040<figref idrefs="f0004">Fig. 4</figref> shows a fourth embodiment of the present invention, the 10c extends substantially through the tool assembly from the in <figref idrefs="f0001">Fig. 1</figref> Embodiment illustrated differs.

0041The tool unit 10c comprises a housing 42 and a captured in in the tool unit 10c 200c tool, in particular a milling cutter, as well as a Späneleitblech 45 which is attached to the housing 42 of the tool unit 10c. Further, a recordable in a recording of the C-axis of 102 C-pivot pin 43 is provided so that the torque of the generator shaft can be transmitted to the tool assembly 10 about the pivot pin 43 as an alternative to the drive of the gear mechanism.

0042The Späneleitblech 45 is adjustable in the present embodiment, in two translational directions, namely in a substantially vertical direction as well as in a substantially horizontal direction. In this way the Späneleitblech 45 can be set to the tool length and / or the tool diameter. This increases the flexibility of the tool unit 10c facing different tools, without having to perform manual adjustments during a tool change.

0043The adjustment of the Späneleitblechs 45 can be carried out as a way characterized, that the tool unit 10c receives a torque of the generator on the axis C-axle 43rd A non-illustrated transmission mechanism sets the torque absorbed into a translational movement of Späneleitblechs 45th Also other mechanisms mentioned to drive the gear mechanism are for in<figref idrefs="f0004">figure 4</figref> illustrated embodiment possible.

0044<figref idrefs="f0005">Fig. 5</figref> showed a fifth embodiment of the present invention, which essentially differs from the preceding embodiments in that the area of ​​the tool unit 10d, here a so-called 4-spindle with four vertically aligned tool holders 200d, no translational movement is caused by the transmission mechanism, but that a portion of the tool unit 10d is rotatable about a further axis of aggregates relative to its housing 52 (in particular C2-axis).

0045The orientation of the tool unit 10d to the workpiece can thus be effected via the additional degree of freedom by pivoting about the axis aggregates. In this case, holes can be introduced at any angle in a workpiece.

0046The adjustment of the tool unit 10d via a not shown gear mechanism which can be driven by various aforementioned systems.

0047One possible measure to adjust the tool unit 10d to the aggregates axis is in <figref idrefs="f0007">Fig. 7</figref> the present application in more detail. In this case, a detent 520d is provided, which is mounted on the machine frame. To adjust the tool unit 10d is this like in<figref idrefs="f0006">Fig. 6</figref> oriented as shown so that the tool unit 10d has an angle 0 ° in the region of the A-axis is thus oriented substantially vertically. In this state, the detent engages 520d on the tool unit 10d, and the tool unit 10d can be rotated about the C-axis driving, and the C-axle 53 to the axis aggregates.

0048If the rotation of the tool unit 10d on the HSK uptake or via an over the electronics module 500 (not shown here) causes energy provided, the orientation of the tool unit 10d to the A-axis may be arbitrary.

0049In that in <figref idrefs="f0007">Fig. 7</figref> Illustrated embodiment is provided as the tool unit 10e, a gluing unit that 200e for applying edge material by means of a pressure roller is arranged on a narrow side of workpieces. As in<figref idrefs="f0005">Fig. 5</figref> Illustrated embodiment, a housing portion of the tool assembly 10e relative to a housing 62 of the tool unit 10e is rotated around the axis by aggregates of C-axle pin 63, so that new processing options can be implemented. In particular, edges are obliquely stuck on a workpiece.

0050<figref idrefs="f0008">Fig. 8</figref> shows a view of the in <figref idrefs="f0007">Fig. 7</figref> Tool assembly illustrated 10e when in accordance with the procedure <figref idrefs="f0007">Fig. 7</figref> with the detent 520d is in communication and is rotated about the axis aggregates. Also other mechanisms mentioned to drive the gear mechanism are for the<figref idrefs="f0007">figures 7</figref> and <figref idrefs="f0008">8th</figref> illustrated embodiment possible.