Machining device and method for machining workpiece

Abstract

The invention relates to a machining device (10) for machining workpieces (11), preferably at least in sections of wood, wood material, plastic or the like, comprising: at least one machining unit (13, 14) having a tool device (21) for machining the workpieces (11); a sensor device (15) for contactlessly detecting the surface (16) of the workpiece (11) to be machined, the tool device (21) being able to be controlled to carry out the machining process on the basis of the detection result of the sensor device (15).

Description

Technical Field

[0001] The invention relates to a processing device and a method for processing a workpiece, which preferably consists at least in sections of wood, wood material, plastic or the like. Background Art

[0002] The processing machine, in particular the wood processing machine, can be designed as a static processing machine or as a continuous processing machine, wherein in both variants for carrying out the processing process, the processing tool and the workpiece are moved relative to one another.

[0003] In order to provide guidance for the machining tool during the machining process, the machining tool is provided with a sensor device which rests on the tool surface during the movement of the machining tool and / or the workpiece and in this way ensures a constant distance between machining tool and workpiece.

[0004] Especially in the case of sensitive workpiece surfaces, such as coating materials, damage may occur due to the contact between the sensing device and the workpiece, which may lead to a loss of workpiece quality. In addition, such mechanical sensing devices require additional installation space in the processing machine. Summary of the invention

[0005] The invention is based on the object of providing a processing device which has a simplified construction and allows for lower costs. In addition, the invention is based on the object of specifying a method which allows for high processing quality when processing a workpiece.

[0006] This object is achieved by a machining device according to the claims and a method for machining a workpiece according to claim 11. The dependent claims relate to specific embodiments.

[0007] The invention is based on the idea of ​​replacing the contact-based sensing devices that have been required to date by contactless sensing. Thus, during the machining process, i.e. during the relative movement between the tool device, in particular the multi-contour tool and / or the tool changer, and the workpiece to be machined, the tool device, in particular the multi-contour tool and / or the tool changer, can be controlled contactlessly based on the detection results of the sensor device. Thus, mechanical sensing devices, such as sensing rollers or sensing seats for mechanically guiding the machining unit during the machining process, can be omitted. As a result, in addition to precise machining, a simplified construction and a smaller space requirement are achieved.

[0008] By providing the sensor device, the positioning of the tool device, in particular the multi-contour tool, and / or the tool change device relative to the surface to be machined of the workpiece can be controlled contactlessly based on the detection results in order to carry out the machining process.

[0009] The tool can be designed, for example, as a chip-removing tool, in particular as a milling tool or a cutting tool.

[0010] According to a preferred embodiment, it is provided that the tool has a multi-contour tool and / or a tool changing device.

[0011] The multi-contour tool can be configured in particular for machining workpiece surfaces, workpiece edges and / or narrow surfaces of a workpiece. Preferably, the multi-contour tool can realize multi-contour machining of workpiece edges, for example circumferential workpiece edges, in particular circumferential edges delimiting narrow surfaces of plate-like workpieces.

[0012] The tool change device is preferably designed to accommodate different machining tools. Different machining processes can be performed by corresponding machining tools, in particular different machining processes for workpiece surfaces, workpiece edges and / or narrow surfaces of workpieces. The machining tools that can be accommodated can preferably be milling tools, cutting tools, such as scrapers and / or saws, etc.

[0013] In a further development of the machining unit, the sensor device can include at least one distance sensor, at least one camera and / or the like and be configured to detect the distance to the surface of the workpiece and / or the contour of the surface. The detection result can be transmitted to the control device.

[0014] The at least one distance sensor can be formed, for example, by a laser device for distance measurement. Preferably, a plurality of distance sensors can be arranged in such a way that a spatial distance measurement from the surface of the workpiece is provided.

[0015] If the sensor device includes at least one camera, the distance to the surface of the workpiece and / or the contour of the workpiece, i.e. the configuration of the workpiece surface to be processed, the workpiece edge and / or the narrow surface can be determined from the image information. Preferably, a plurality of cameras can be arranged so as to provide a spatial detection of the contour of the surface of the workpiece.

[0016] In this way, the tool device, in particular a multi-contour tool and / or a tool changing device can be controlled based on the detection results of the sensor device, ie based on a determined distance from the workpiece surface and / or a determined contour of the workpiece surface.

[0017] A further embodiment of the machining unit can provide that the sensor device is arranged upstream of a tool device, in particular upstream of a multi-contour tool and / or a tool changing device, in the machining direction.

[0018] The detection of the spacing and / or contour can be carried out in the described manner during the relative movement of the machining unit and the workpiece. Thus, it is possible to precisely and directly control the tool device, in particular the multi-contour tool and / or the tool changer, preferably in real time, based on the detection results of the sensor device.

[0019] Furthermore, it is also possible to provide the sensor device downstream of the tool device in the machining direction, for example for quality monitoring.

[0020] Preferably, provision can be made in the machining unit for the tool device, in particular a multi-contour tool, to have a first machining tool with a first machining contour and at least one further machining contour.

[0021] By means of such a tool device or such a multi-contour tool, a workpiece can be machined with different machining contours, i.e. with defined machining contours, depending on the positioning of the tool device / multi-contour tool relative to the workpiece surface to be machined. The positioning of the defined machining contour of the tool device / multi-contour tool relative to the workpiece is carried out in particular based on the detection results of the sensor device.

[0022] The machining tool is in particular a chip machining tool, preferably a milling tool with at least two different milling contours, a scraper with at least two different cutting contours, etc. The milling contour of the milling tool or the cutting contour of the scraper can be formed, for example, by different milling or cutting radii or milling or cutting chamfers for machining workpiece edges.

[0023] In a development of the machining unit, the tool device, in particular a multi-contour tool, can have a first machining tool with a first machining contour and at least one further machining tool with a further machining contour, and preferably at least one of the machining tools can be moved between a working position and a rest position.

[0024] With such a tool arrangement or such a multi-contour tool, workpieces, in particular workpiece edges, can be machined with different machining contours, in particular different radii or chamfers or projections. In particular, the machining tool is a chip machining tool, preferably a milling tool with different milling contours. Machining with different machining contours is achieved in this case in that at least one further machining tool can be moved axially relative to the first machining tool so that the machining contour of the at least one further machining tool overlaps with the machining contour of the first machining tool used for the machining process in the working position.

[0025] The positioning of the multi-contour tool and / or the control of the axial adjustment movement of at least one further machining tool relative to the first machining tool, ie the control of the axial adjustment movement of the machining tool from the rest position to the working position, can be set based on the detection results of the sensor device.

[0026] Furthermore, another embodiment of the machining unit can provide that the tool changing unit is configured to simultaneously or alternately accommodate at least two machining tools having different machining contours and to carry out a machining process with each of the machining tools.

[0027] The tool change unit is designed in particular to accommodate different chip-removing machining tools with different machining contours, such as different milling tools, cutting tools, etc. For example, the tool change unit can have a simple changing unit or a turret device, by which the machining tools can be accommodated simultaneously or alternately. The tool change unit can also be designed to accommodate other machining tools, such as drilling tools or sawing tools.

[0028] Advantageously, a control device can be provided in the machining unit, which is configured to transfer the tool device, in particular the multi-contour tool and / or the tool changing unit, to a target position based on the detection results of the sensor device and to control the machining process through the first machining contour or at least one further machining contour.

[0029] The control device can include an electronic control mechanism and / or an adjustment device, wherein the adjustment device can be used to perform an adjustment movement of the tool device, in particular the multi-contour tool and / or the tool changing unit relative to the workpiece in the X direction and / or the Y direction and / or the Z direction, and the electronic control mechanism can be used to control the adjustment movement as a function of the detection result. The target position preferably forms a position of the tool device, in particular the multi-contour tool and / or the tool changing unit relative to the workpiece in which machining of the workpiece with a defined machining contour at a defined distance is provided.

[0030] Particularly preferably, the control device of the machining unit can be configured to control a tool device, in particular a multi-contour tool and / or a tool changing unit, so that a defined machining tool and / or machining contour is selected based on the detection result and transferred to a target position and / or the defined machining tool and / or machining contour is maintained at a target distance from the surface of the workpiece during the machining process.

[0031] By means of this control, in particular, machining processes by different machining tools and / or different machining contours can be automatically controlled.By controlling based on the detection results, the precise positioning of the corresponding machining tool or machining contour relative to the surface to be machined of the workpiece can be controlled.

[0032] According to the embodiments described above, the tool can be configured as a multi-contour tool and / or a tool changer. However, according to other improvements, it is possible that the tool has a pressing device (e.g. a pressing roller), an adhesion promoter coating device (e.g. a rubber roller), a further processing tool, in particular a scraper, and / or a milling tool, in particular for contour milling or shape milling.

[0033] The processing device according to the invention can be designed, for example, as a static machine tool, in which the workpiece is accommodated statically and the processing unit can be moved relative to the workpiece by means of a conveying device, in particular a multi-axis adjustment device, for carrying out the processing process. The processing device can be designed as a CNC-controlled processing machine or a CNC-controlled processing center. Likewise, the processing device can be designed as a continuous machine, in which the workpiece is moved relative to the processing unit by means of a conveying device in a conveying direction.

[0034] Furthermore, the object is achieved by a method for machining a workpiece according to claim 11 , the workpiece preferably being composed at least in sections of wood, wood material, plastic or the like.

[0035] By means of this machining method, a high machining quality can be achieved when machining a workpiece by means of a tool device, in particular a multi-contour tool and / or a tool changing device. By controlling the tool device, in particular a multi-contour tool and / or a tool changing unit based on the detection range of the sensor device, it can be maintained at a defined target distance from the workpiece surface to be machined during the machining process. Due to the contactless detection of the workpiece surface by the sensor device, damage to the workpiece surface, for example sensitive workpiece materials or surface coatings, which could be caused by contact of the mechanical sensing device with the workpiece surface, can be avoided.

[0036] Furthermore, by detecting the actual position of the surface of the workpiece and controlling the workpiece and / or the machining unit into a target position, a precise control of the machining process can be achieved, whereby a high machining quality can be achieved.

[0037] In addition, based on the detection results, the control of the tool device, especially the multi-contour tool and / or the tool changing unit can be achieved by selecting a defined machining contour of the tool device, especially the multi-contour tool and / or the tool changing unit, and positioning it relative to the workpiece surface to be machined so as to perform the machining process through the defined machining contour. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Further features and advantages of the device, application and / or method are apparent from the following description of exemplary embodiments with reference to the accompanying drawings. The drawings show:

[0039] Figure 1 A schematic perspective view showing one embodiment of a processing device according to the present disclosure;

[0040] Figure 2 A schematic diagram showing an example of a multi-contour tool;

[0041] Figure 3 A schematic diagram showing an alternative example of a multi-contour tool;

[0042] Figure 4 A schematic perspective view showing a second embodiment of a processing apparatus according to the present disclosure. DETAILED DESCRIPTION

[0043] The same reference numerals in different figures designate identical elements, elements that correspond to one another or elements that function similarly.

[0044] Figure 1 A schematic perspective view shows an embodiment of a machining device 10 according to the invention for machining a workpiece 11 .

[0045] The machining installation 10 is in particular a continuous machine in which a workpiece moves relative to one or more machining units.

[0046] The processing device 10 includes a conveying device 12, which is arranged according to Figure 1 It is configured as a continuous conveying device, such as a conveyor belt, a conveyor chain, a conveyor belt, etc. The workpiece 11 to be processed is positioned on the conveying device 12 and moves relative to one or more processing units 13, 14 along the conveying direction F. The workpiece 11 can move along the conveying direction F through one or more processing units 13, 14 during the processing process.

[0047] In an alternative embodiment of the machining device 10 , it can also be provided that the workpiece 11 lies statically on a workpiece support and that one or more machining units 13 , 14 are moved relative to the workpiece 11 by means of the transport device 12 , in particular by means of an adjusting device.

[0048] Likewise, a hybrid of these two designs is possible, in which the transport device 12 has the task of bringing about a relative movement between the workpiece 11 and one or more machining units 13 , 14 .

[0049] The processing device 10 can thus be designed as a continuous machine or as a stationary processing machine.

[0050] The workpiece 11 to be processed is in particular a workpiece which is at least partially made of wood, wood material, plastic, etc. The workpiece 11 can be a plate-shaped workpiece. Preferably, it can be a different workpiece, such as a solid wood board or a chipboard, a fiberboard, a sandwich board, a profile, etc. However, the present invention is not limited to such workpieces 11.

[0051] according to Figure 1 The processing device 10 includes two processing units 13 and 14, which respectively perform a processing process on the workpiece. Similarly, the processing device 10 can also have only one processing unit 13 or 14 or more than two processing units.

[0052] Furthermore, the machining device 10 comprises a sensor device 15 for contactlessly detecting a surface 16 of the workpiece 11 to be machined.

[0053] The sensor device 15 can preferably be arranged separately from the processing units 13, 14 in the processing device 10. Likewise, the sensor device 15 can be arranged at one or both processing units 13, 14 or be designed integrally with the processing units 13 and / or 14.

[0054] The sensor device 15 comprises two distance sensors 17 , 18 , which are designed, for example, as laser sensors or linear sensors for distance measurement.

[0055] Additionally or alternatively, the sensor device 15 may include one or more cameras in order to optically detect the distance to the surface 16 and / or to detect the contour of the surface 16 of the workpiece 11 , for example a workpiece edge, a narrow face of the workpiece or the like.

[0056] In this manner, the sensor device 15 can measure the spatial distance to the surface 16 of the workpiece 11 and / or determine the shape of the surface 16 to be processed, ie, workpiece edges, narrow surfaces, etc., from the distance information and / or image information.

[0057] The sensor device 15 forms a contactless sensing device for the machining units 13, 14. Based on the detection results of the sensor device 15, the actual position of the surface 16 to be machined of the workpiece 11 can be determined.

[0058] Data about the surface 16 to be machined of the workpiece 11 detected by the sensor device 15 , ie, the detection result of the sensor device 15 , is transmitted to the control device 19 , which controls the machining units 13 , 14 to respectively perform a machining process based on the detection result.

[0059] The control device 9 can include an electronic control mechanism and an adjustment device 20. The adjustment device 20 can be used to perform adjustment movements of the processing units 13, 14 in the X direction, the Y direction and / or the Z direction. The adjustment movement can be controlled by the electronic control mechanism of the control device 19 according to the detection results of the sensor device 15.

[0060] The control device 19 can control the machining units 13, 14 between an actual position and a target position for machining the surface 15 of the workpiece 11. In the actual position, the machining units 13, 14 are positioned at a defined target distance from the surface 16 of the workpiece 11 during the machining process.

[0061] The machining units 13 , 14 each comprise a unit base body which can be coupled to the machining device 10 , for example to a drive of the machining device 10 , via an interface device (not shown in detail).

[0062] The machining units 13, 14 include a tool device, in particular a multi-contour tool 21 or a tool changer, in order to perform a machining process on the workpiece 11. The two machining units 13, 14 can each have a different multi-contour tool 21 or a tool changer. It can also be provided that the machining unit 13 has a multi-contour tool 21 and the other machining unit 14 has a tool changer.

[0063] Figure 2 A schematic diagram of a first specific embodiment of a multi-contour tool 21 is shown.

[0064] The multi-contour tool 21 is formed by a machining tool 22 which has a plurality of machining contours 23 for machining a workpiece 11 .

[0065] Preferably, the machining contour 23 forms a workpiece edge for machining the workpiece 11. In particular, the machining tool 21 is a milling tool having different milling radii or milling chamfers for machining the workpiece 11, in particular for machining a workpiece edge of the workpiece 11. The machining tool 21 can form a rotationally symmetrical body and rotate about the rotation axis R.

[0066] The multi-contour tool 21 can be coupled to a drive shaft (not shown in further detail) of the machining device 10 via an interface device, so that a torque can be transmitted to the machining tool 22 .

[0067] Likewise, the machining tool 21 can be designed as a cutting tool or a scraper having different cutting radii or cutting chamfers for machining the workpiece 11 , in particular for machining a workpiece edge of the workpiece 11 .

[0068] Figure 3 An alternative embodiment of a multi-contour tool 21 is shown.

[0069] The multi-contour tool 21 comprises a basic body 24 which has a first machining tool 25 and a second machining tool 26. The two machining tools 25, 26 are arranged coaxially with respect to one another and are rotatable about a common axis of rotation R.

[0070] The multi-contour tool 21 can be coupled to a drive shaft of the machining device 10 via an interface device, so that a torque can be transmitted to the first machining tool 25 and / or the second machining tool 26 .

[0071] The second machining tool 26 is arranged on the outer circumference of the first machining tool 25 so as to be axially movable relative to the first machining tool 25 , so that the second machining tool 26 can be axially moved between a rest position and a working position.

[0072] The first machining tool 25 forms a first machining contour 27 at the end side of the multi-contour tool 21. The second machining tool 26 forms a second machining contour 28 at the end side in the working position. By axially moving the second machining tool 26 relative to the first machining tool 25, the second machining contour 28 of the second machining tool 26 is superimposed on the first machining contour 27 of the first machining tool 25, so that two different machining contours 27, 28 for machining the workpiece 11 are provided by the multi-contour tool 21.

[0073] In particular, the first and second machining tools 25 , 26 are each milling tools having different milling radii or milling chamfers for machining workpiece edges of the workpiece 11 .

[0074] As already described above, the control device 19 is configured to transfer the machining units 13 , 14 from the actual position into the target position for machining the surface 15 of the workpiece 11 based on the detection results of the sensor device 15 .

[0075] In this case, the control device 19 is in particular configured to move the respective machining tool 22 , 25 , 26 that is to carry out a machining process into a target position at a constant distance from the surface 16 to be machined of the workpiece 11 during the machining process.

[0076] Furthermore, the control device 19 is preferably configured to position the respective machining tool 22 , 25 , 26 in a target position relative to the surface 16 to be machined of the workpiece 11 , so that a machining process can be carried out with the defined machining contours 23 , 27 , 28 .

[0077] The control device 19 can also be configured to select a defined machining contour 23 , 27 , 28 as a function of the detection results of the sensor device 15 and to position the machining tool 22 , 25 , 26 with the defined machining contour 23 , 27 , 28 relative to the surface 16 of the workpiece 11 in order to carry out the machining process.

[0078] If the machining units 13 , 14 have a tool changer, the control device 19 can be configured to control the tool changer in such a way that a defined machining tool is selected as a function of the detection result, for example switched in by the tool changer, and moved into a target position in order to carry out the machining process.

[0079] By means of such a control via the control device 19 , the machining process with the different machining contours 23 , 27 , 28 and / or machining tools can be automatically controlled based on the detection results.

[0080] Figure 4 A second embodiment of a machining device 10 for machining a workpiece 11 according to the present disclosure is shown.

[0081] Second Implementation Method and Reference Figure 1 The first embodiment described differs essentially in that a further surface of the workpiece 11 can be scanned and processed. In addition, reference is therefore made to the description of the first embodiment for the following explanation of the second embodiment in order to avoid repetitions, in particular the above-described refinements of specific features.

[0082] As in the first embodiment, the machining installation 10 comprises a conveying device 12. A workpiece 11 to be machined is positioned on the conveying device 12 and is moved in a transport direction F relative to one or more machining units 13, 14.

[0083] The processing device 10 has two processing units 13 and 14 on the right (in the direction of passage) and two processing units 13 and 14 on the left (in the direction of passage).

[0084] Furthermore, the processing device 10 includes two sensor devices 15 (a sensor device 15 arranged on the left and right in the passing direction, respectively) for contactlessly detecting the surface 16 of the workpiece 11 to be processed. The sensor device 15 can be arranged in the processing device 10 separately from the processing units 13, 14. Likewise, the sensor device 15 can be arranged at one or both processing units 13, 14 or be formed integrally with the processing units 13 and / or 14.

[0085] Each of the sensor devices 15 comprises two distance sensors 17, 18, which are designed, for example, as laser sensors or linear sensors for distance measurement. In addition or as an alternative, the sensor device 15 can comprise one or more cameras in order to optically detect the distance to the surface 16 and / or to detect the contour of the surface 16 of the workpiece 11, such as a workpiece edge, a narrow surface of the workpiece, etc.

[0086] In this manner, the sensor device 15 can measure the spatial distance to the surface 16 of the workpiece 11 and / or determine the shape of the surface 16 to be processed, ie, workpiece edges, narrow surfaces, etc., from the distance information and / or image information.

[0087] The sensor device 15 forms a contactless sensing device for each of the machining units 13, 14. Based on the detection results of the sensor device 15, the actual position of the surface 16 to be machined of the workpiece 11 can be determined.

[0088] Data about the surface 16 to be machined of the workpiece 11 detected by the sensor device 15 , ie, the detection result of the sensor device 15 , is transmitted to the control device 19 , which controls the machining units 13 , 14 to perform the machining process based on the detection result.

[0089] exist Figure 4In the embodiment, the control device 19 is shown intuitively by two separate areas. Instead of the control device 19, however, a separate control device can also be provided. For other aspects, reference is made to the explanation of the first embodiment, wherein according to the second embodiment, a plurality of tool devices 21 are provided or can be provided.

[0090] It is obvious to those skilled in the art that each feature described in different embodiments can also be implemented in a single embodiment, as long as it is not structurally incompatible. Similarly, the different features described in a single embodiment can also be proposed in multiple embodiments individually or in any suitable sub-combination.

Claims

1. A processing device (10) for processing a workpiece (11), the workpiece preferably at least partially consisting of wood, wood material, plastic or the like, the processing device comprising: at least one machining unit (13, 14) having a tool device (21) for machining the workpiece (11); A sensor device (15) for contactlessly detecting a surface (16) of a workpiece (11) to be processed, wherein The tool device (21) can be controlled to perform a machining process based on the detection result of the sensor device (15).

2. The processing equipment according to claim 1, The tool device comprises a multi-contour tool (21) and / or a tool changing device.

3. The processing equipment according to claim 1 or 2, The sensor device (15) is configured to detect a distance from a surface (16) of the workpiece (11) and / or to detect a contour of the surface (16) of the workpiece, and preferably comprises at least one distance sensor (17, 18) and / or at least one camera.

4. A processing device according to any one of the preceding claims, The sensor device (15) is arranged upstream of the tool device in the machining direction.

5. A processing device according to any one of the preceding claims, The tool device (21) has a machining tool (22) having a first machining contour (23) and at least one further machining contour (23).

6. The processing equipment according to any one of claims 1 to 3, The tool device (21) comprises a first machining tool (25) with a first machining contour (27) and at least one further machining tool (26) with a further machining contour (28), and preferably at least one of the machining tools (25, 26) is movable between a working position and a rest position.

7. The processing equipment according to any one of claims 2 to 6, The tool changing unit is configured to simultaneously or alternately accommodate at least two machining tools having different machining contours and to perform the machining process using each of the machining tools.

8. The processing equipment according to any one of claims 5 to 7, A control device (19) is also provided, which is configured to transfer the tool (21) to a target position based on the detection results of the sensor device (15) and to control the machining process via the first machining contour (23, 27) or the at least one further machining contour (23, 28).

9. The processing equipment according to claim 8, The control device (19) is configured to control the tool device (21) so that a defined machining tool (22, 25, 26) and / or a machining contour (23, 27, 28) is selected based on the detection result, and the tool device is transferred to the target position, and / or the defined machining tool (22, 25, 26) and / or the machining contour (23, 27, 28) is maintained at a target distance from the surface (16) of the tool (11) during the machining process.

10. The processing equipment according to any one of the preceding claims 1, The tool device in this case has a pressing device, an adhesion promoter application device, a scraper and / or a milling tool, in particular for contour milling or form milling.

11. A method for machining a workpiece (11), in particular using a machining device (10) according to any one of claims 1 to 10, the workpiece preferably being at least partially made of wood, wood material, plastic or the like, the method comprising the following steps: The surface (16) of the workpiece (11) is detected contactlessly by means of a sensor device (15), determining the actual position of the surface (16) of the workpiece (11) based on the detection results of the sensor device (15), and The workpiece (11) and / or the machining unit (13, 14) are controlled into a target position in order to perform a machining process on the workpiece (11), wherein Based on the detection result, the tool device (21) is controlled so that a machining process is performed by a first machining contour (23, 27) of the tool device (21) or by at least one further machining contour (23, 28) of the tool device.

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