END MACHINING CENTER FOR ROD-SHAPED WORKPIECES

Description

[0001] The invention relates to a system for machining the ends of at least one rod-shaped or tubular workpiece by means of two machining devices, each comprising a sawing device and at least one chamfering device. The at least one rod-shaped or tubular workpiece is fed to the machining devices by means of a conveyor device in a conveying plane oriented transversely to the conveying direction. The present invention is characterized by high machining accuracy of the rod-shaped or tubular workpieces to be machined and by a high machining speed during continuous machining of a plurality of rod-shaped or tubular workpieces.

[0002] A device according to the preamble of claim 1 and a method according to the preamble of claim 13 for machining rod-shaped workpieces are described in US4425062A. There, a rod is inserted between two machining devices via a feed device, and the rod end is then cut and machined in each machining device.

[0003] Furthermore, EP0338015B1 describes a method for cutting and deburring pipes, wherein the starting pipe is held by means of support jaws for processing in order to cut and subsequently deburr the starting pipe. However, both devices describe only a partially satisfactory technical solution with regard to the achievable processing accuracy and, in particular, with regard to the processing speed during the continuous processing of a plurality of rod-shaped or tubular workpieces.

[0004] The object of the present invention was to overcome the disadvantages of the prior art and to provide a device and a method by means of which a user is able to machine the ends of rod-shaped or tubular workpieces in a simple manner and with high manufacturing accuracy while at the same time having a short cycle time.

[0005] This object is achieved by a device and a method according to the claims.

[0006] The system according to the invention for machining a first end and a second end of at least one rod-shaped workpiece comprises a conveying device in which the at least one rod-shaped workpiece can be positioned in a conveying plane transverse to a conveying direction and by means of which conveying device the at least one rod-shaped workpiece can be conveyed in the conveying direction. Furthermore, the system comprises a first machining device and a second machining device, wherein the first end of the at least one rod-shaped workpiece can be fed to the first machining device and the second end of the at least one rod-shaped workpiece can be fed to the second machining device by means of the conveying device. The first machining device and the second machining device each have a clamping device, a sawing device, and at least one chamfering device.It may be advantageous for the sawing device and the at least one chamfering device of a machining device to be aligned with one another in such a way that the respective machining axes of rotation are arranged within a common plane.

[0007] In the first processing device and the second processing device, the sawing device and a machine housing of the at least one chamfering device are each arranged on a common support element and held stationary relative to the common support element. Furthermore, in the first processing device and the second processing device, a tool unit is each formed from the sawing device, the machine housing with the at least one chamfering device, and the common support element. The first tool unit of the first processing device is movable relative to a first machine frame, and the second tool unit of the second processing device is movable relative to a second machine frame, along a first processing direction oriented normal to the conveying plane and along a second processing direction oriented orthogonal to the conveying direction and parallel to the conveying plane.

[0008] If the ends of the at least one rod-shaped workpiece are consequently fed to the respective processing devices, these ends, or the end regions of the rod-shaped workpieces, can be machined by means of the tool unit while held by the clamping device. It is advantageous in this case that the tool unit is movable in the direction of the first processing direction and in the direction of the second processing direction and thus the at least one rod-shaped workpiece can be cut off by means of the sawing unit and machined by means of the chamfering unit, wherein the clamping device is not released between the two processing steps. This results in the simplest possible machinability and precise machining, since the at least one rod-shaped workpiece is always positioned correctly by means of the clamping device and thus simultaneously represents a reference mark for the movements of the tool unit.This subsequently results in a saving in measuring technology for adjusting at least one rod-shaped workpiece.

[0009] Furthermore, the system described here achieves a significant reduction in the cycle time per feeding and processing of a bar-shaped workpiece when machining a large number of bar-shaped workpieces, as well as improved machining tolerances. This results, firstly, from the fact that at least one bar-shaped workpiece to be machined only needs to be clamped once for both operations. Secondly, the cycle time for each bar-shaped workpiece to be machined is reduced because the precise positioning of the workpiece by means of the clamping device with respect to the individual tools of the tool unit eliminates the need for additional, time-consuming measuring effort.

[0010] Also advantageous is an embodiment according to which it can be provided that the conveying device, the first processing device and the second processing device are held on a common base frame, wherein a processing axis of rotation of the at least one chamfering device of the first processing device is aligned with a processing axis of rotation of the at least one chamfering device of the second processing device.

[0011] It may be expedient for the respective clamping device to be fixed in position on the respective machining device, whereby the first and second machining devices can be mounted on the common base frame at the same time. This ensures the correct position of the rod-shaped workpiece to be machined, or of rod-shaped workpieces in general. The aligned machining rotation axes of the chamfering devices of the first and second machining devices further ensures that the adjustment of the respective chamfering device using the respective movable tool unit is simplified and that rapid and precise machining is carried out using the respective chamfering device.

[0012] In particular, it may be advantageous if the conveying device comprises a first conveying means and a second conveying means, which first conveying means is mounted on the first machine frame of the first processing device and which second conveying means is mounted on the second machine frame of the second processing device, wherein the first conveying means and the second conveying means are motion-coupled.

[0013] The feed in the conveying direction of the at least one rod-shaped workpiece can thus be ensured in a coordinated manner by the first conveying means and the second conveying means. It is thus avoidable that the at least one rod-shaped workpiece, when held by the respective clamping device, has an inclined position with respect to the aligned clamping devices, or subsequently with respect to the aligned machining axes of rotation, and is subsequently tensioned by the clamping in the clamping devices. Consequently, it is ensured that the movement coupling of the first conveying means and the second conveying meansrod-shaped workpieces are positioned correctly in the conveying device, i.e. with their longitudinal axis aligned parallel to the first processing direction, and that the first end and the second end of the at least one rod-shaped workpiece are fed simultaneously to the first and the second processing devices.

[0014] According to the invention, the respective clamping device is movable and positionable relative to the first and second machine frames of the respective first and second processing devices along the first processing direction, wherein a first end region and a second end region of the at least one rod-shaped workpiece can be received and positioned in the respective clamping device of the first processing device and the second processing device. It may be advantageous for the first processing direction to be oriented vertically and thus for the respective clamping device to be movable and positionable in the vertical direction.

[0015] This ensures that a geometrically known rod-shaped workpiece can be picked up and positioned by the clamping device in such a way that the machining positioning of the rod-shaped workpiece relative to the machining device is known. This has the advantageous effect of eliminating the need for calibration or determining the exact position in the first machining direction of the rod-shaped workpiece. Thus, machining of at least one rod-shaped workpiece can be started more quickly using the tool unit, which in turn reduces the cycle time when machining a large number of rod-shaped workpieces.Likewise, the positioning of a rod-shaped workpiece along its longitudinal axis does not need to be determined and, if necessary, adjusted, which would make it difficult to determine the position of the rod-shaped workpiece in the first machining direction if it is misaligned. Saving on corresponding measurement technology also brings economic advantages and a reduction in system complexity.

[0016] According to a further development, it is possible for the respective tool unit of the first processing device and the second processing device to comprise, in addition to the at least one chamfering device, at least one second chamfering device with a second machine housing, wherein the machine housings of the at least one chamfering device and the at least one second chamfering device are arranged at a distance from one another on the common support element along the conveying direction.

[0017] Thus, it is possible for the at least one first rod-shaped workpiece and a second rod-shaped workpiece to be machined simultaneously, or in a single machining step, and with a single feed of the tool unit by means of the at least one first chamfering device and the second chamfering device. This results in a reduction in cycle time when machining multiple rod-shaped workpieces.

[0018] Furthermore, it can be provided that the at least one chamfering device can be moved and positioned in a movement-coupled manner relative to the machine housing and the second chamfering device can be moved and positioned in a movement-coupled manner relative to the second machine housing in the direction along the second machining direction.

[0019] This allows the cycle time to be further reduced when machining multiple bar-shaped workpieces, since the feed of the chamfering devices in the second machining direction is achieved partly by the movement of the tool unit and partly by the movement of the chamfering devices themselves. Furthermore, shorter travel distances are required for the tool unit, which offers energy advantages with regard to the mass that must be accelerated with each movement.

[0020] In particular, it may be advantageous if the first end and the second end, or the first end section and the second end section of the at least one first rod-shaped workpiece and a second rod-shaped workpiece can be cut by means of the respective sawing device of the first processing device and the second processing device when the tool unit is moved along the first processing direction.

[0021] Accordingly, it is expedient if the sawing device is arranged relative to the clamping device such that a line of a saw blade or a saw band projected onto the conveying plane overlaps the at least one rod-shaped workpiece and the second rod-shaped workpiece. Thus, at least two rod-shaped workpieces can be cut simultaneously during a machining movement in the first machining direction. This embodiment again offers the advantage of shortening the cycle time per machined rod-shaped workpiece and reducing energy consumption due to the reduction in the number of machining steps per two rod-shaped workpieces to be machined.

[0022] According to a further development, it is possible for the clamping device of the first processing device and the clamping device of the second processing device to each have a lower clamping jaw and an upper clamping jaw with respect to the conveying plane, wherein the lower clamping jaw is formed with at least one workpiece holder with a V-shaped cross section for the at least one rod-shaped workpiece.

[0023] It is advantageous that the at least one rod-shaped workpiece, and in particular a rod-shaped workpiece with a round cross-section, can be positioned in a defined manner in the V-shaped workpiece holder relative to the conveying direction. The relative positions of the clamping device and thus of the lower and upper clamping jaws to the tool unit are known via the arrangement on the common machine frame. Consequently, when the rod-shaped workpiece is positioned in the V-shaped workpiece holder, the position of the rod-shaped workpiece relative to the tool unit is known. The at least one rod-shaped workpiece can therefore be machined effectively and precisely, since no measuring technology is required to determine the correct position of the rod-shaped workpiece.

[0024] An advantageous further development can be that the upper clamping jaw has a workpiece clamping device with a V-shaped cross section in the area of ​​the V-shaped workpiece holder, wherein the cross-sectional geometry of the V-shaped workpiece holder and the V-shaped workpiece clamping device are designed essentially symmetrically with respect to the conveying plane or symmetrically with respect to a horizontal plane.

[0025] The advantage here is that the rod-shaped workpiece is precisely positioned in the clamping device. This precise positioning is achieved even if the rod-shaped workpiece deviates from a straight line along its longitudinal axis, since the V-shaped workpiece clamping allows the end section of the rod-shaped workpiece to be correctly positioned and clamped or held in place in the V-shaped workpiece holder.

[0026] According to one embodiment, it is possible for the upper clamping jaw to be at least partially complementary in shape to the lower clamping jaw, wherein the upper clamping jaw has a pressure surface that is convex or V-shaped in cross section in the region of the V-shaped workpiece holder.

[0027] This makes the system compatible with a wide variety of rod-shaped workpieces with different diameters. If, for example, a rod-shaped workpiece has a diameter larger than the recess of the V-shaped tool holder in the first direction of movement, the rod-shaped workpiece can be held by the upper clamping jaw anyway. If, for example, a rod-shaped workpiece has a diameter smaller than the recess of the V-shaped tool holder in the first direction of movement, the rod-shaped workpiece can still be held by the V-shaped or convex pressure surface. At the same time, this design of the clamping jaws has the advantage, particularly with round workpieces, that the round workpiece is held by the clamping jaws via three points of contact and thus in a statically determined manner.

[0028] This eliminates the need to change individual system components, such as clamping jaws, for rod-shaped workpieces with different diameters. Furthermore, recalibration of the different rod-shaped workpieces is not necessary. A one-time storage of the geometry of the rod-shaped workpiece to be machined is sufficient to subsequently perform the same machining in an effective and precise manner. Since setup time represents a significant cost factor for small series, the inventive system design offers further economic advantages.

[0029] Furthermore, it may be expedient if the respective workpiece holder is designed symmetrically with respect to a vertical plane of symmetry, wherein each workpiece holder of the system is assigned a chamfering device and wherein the machining axis of rotation of the assigned chamfering device lies in the vertical plane of symmetry of the respective workpiece holder.

[0030] This results in precise positioning of rod-shaped workpieces regardless of their diameter. Furthermore, there is no longer any need to store geometric values ​​for the rod-shaped workpieces and the associated positioning values ​​for the clamping devices and tool units, as the machining axes of rotation of the chamfering devices are always aligned with the respective longitudinal axis of the rod-shaped workpiece. This reduces the complexity of controlling the system and continues to ensure or improve precise machining of the rod-shaped workpieces. Particularly with rod-shaped workpieces with a small diameter, applying a precisely manufactured chamfer is difficult without auxiliary measuring devices. This design improves the quality of the applied chamfer on rod-shaped workpieces with a small diameter in terms of low deviation tolerances.

[0031] Furthermore, it can be provided that the clamping device of the first processing device and the clamping device of the second processing device and in particular the respective lower clamping jaw and the respective upper clamping jaw are movable and positionable in a movement-coupled manner relative to the first and second machine frame in the direction along the first processing direction.

[0032] As a result, at least one rod-shaped workpiece can be picked up by the conveying device, which is both correctly positioned in the conveying direction by the V-shaped receptacle and, in the normal direction to the conveying direction, is positioned in a position corresponding to the processing unit by the height adjustment. The motion coupling also ensures that the rod-shaped workpiece can be picked up by both processing devices, i.e., simultaneously at the first end section and the second end section, in order to prevent or at least reduce bending or distortion of the rod-shaped workpiece.

[0033] Furthermore, it may be expedient for the respective clamping device to be movable and positionable relative to the machine frame of the respective processing device in the direction along the first processing direction, wherein the respective first end region and the respective second end region, or the first and the second end section of the at least one rod-shaped workpiece and a second rod-shaped workpiece can be received and positioned simultaneously in the respective clamping device of the first processing device and the second processing device. This results in a further reduction in the necessary movements of the system components and, subsequently, a further increase in the cycle frequency. These advantages are particularly enhanced by high quantities of rod-shaped workpieces.

[0034] Furthermore, it may be expedient for the conveying device to have at least two transport elements, each of which has two or more trough-shaped transport receptacles in cross-section, wherein the trough-shaped transport receptacles are arranged one after the other in the conveying direction and wherein the at least one rod-shaped workpiece can be freely moved in a trough-shaped transport receptacle of each transport element in the conveying direction.

[0035] According to an expedient further development, it can be provided that the first and the second conveying means each have two or more transport receptacles which are trough-shaped in cross section, wherein the trough-shaped transport receptacles are arranged one after the other in the conveying direction and wherein the at least one rod-shaped workpiece can be positioned in a trough-shaped transport receptacle of the first and the second conveying means in a freely movable manner in the conveying direction.

[0036] The at least one rod-shaped workpiece is thus freely movable in the trough-shaped transport receptacles in the conveying direction when it is fed to the first and second processing devices, so that when the at least one rod-shaped workpiece is picked up by means of the respective clamping device or by means of the respective at least one lower clamping jaw of the first and second processing devices, the at least one rod-shaped workpiece can be positioned in the V-shaped workpiece receptacles without any tension. As a result, the conveying device thus has some leeway in the conveying direction for minor inaccuracies when feeding rod-shaped workpieces to the first and second processing devices, which saves on complex measuring and control technology, while at the same time the high quality of the manufacturing accuracy of the chamfers on the rod-shaped workpieces is maintained.

[0037] The invention further relates to a machining method for simultaneously machining a first end and a second end of at least one rod-shaped workpiece using a system comprising a conveyor device, a first machining device, and a second machining device. The first machining device and the second machining device each have a clamping device and a tool unit, which tool units each have at least one chamfering device in a machine housing and a sawing device.

[0038] The processing procedure includes the following steps: Positioning the at least one rod-shaped workpiece in a conveying plane of the conveying device transversely to a conveying direction. Thus, the at least one rod-shaped workpiece, or rod-shaped workpieces, can be conveyed with their longitudinal axis aligned transversely to the conveying direction; simultaneously feeding a first end of the at least one rod-shaped workpiece to the first processing device and a second end of the at least one rod-shaped workpiece to the second processing device by means of the conveying device; positioning a first end region and a second end region of the at least one rod-shaped workpiece in the respective clamping device of the first processing device and the second processing device. The positioning of the first end region and the second end region, orThe first end section and the second end section can be held, for example, by simultaneously picking up the at least one rod-shaped workpiece from the conveying device by means of the clamping device. The picking up can be done by moving the clamping device in a direction along a normal to the conveying plane; holding the first and second end regions, or the first and second end sections of the at least one rod-shaped workpiece, respectively, by means of a lower clamping jaw and an upper clamping jaw of the respective clamping device, wherein the at least one rod-shaped workpiece is positioned in the clamping device between the lower and upper clamping jaws.For example, the lower clamping jaw or the upper clamping jaw can be moved in a direction along a normal to the conveying plane in order to hold the at least one rod-shaped workpiece between the lower and the upper clamping jaw; cutting off a first end section and a second end section, or a first end and a second end of the at least one rod-shaped workpiece by means of the respective sawing device of the first processing device and the second processing device. Preferably, the first end region and the second end region can be cut off simultaneously by the sawing devices of the first and the second processing device; machining to apply at least one chamfer to the first end and to the second end of the at least one rod-shaped workpiece, respectively by means of the at least one chamfering device of the first processing device and the second processing device. The chamfering, orthe application of a chamfer to the first end and to the second end of the at least one rod-shaped workpiece can preferably be carried out by advancing the respective chamfering device of the first and the second processing device in the direction along the longitudinal axis of the at least one rod-shaped workpiece, or in the direction transverse to the conveying direction; .

[0039] The processing method is further characterized by the fact that the sawing device and the machine housing of the at least one chamfering device are moved as a motion-coupled tool unit. Thus, when the respective tool unit of the first and second processing device moves along a first processing direction oriented normal to the conveying plane, the first end section and the second end section of the at least one rod-shaped workpiece are trimmed by means of the respective sawing units in operation. Furthermore, the at least one chamfer is applied to the first end and the second end of the at least one rod-shaped workpiece by means of the respective chamfering devices in operation when the respective tool unit moves along a second processing direction oriented orthogonal to the conveying direction and parallel to the conveying plane.

[0040] The present machining method is advantageous in that two consecutive machining steps are carried out when machining the at least one rod-shaped workpiece or rod-shaped workpieces, whereas the respective at least one rod-shaped workpiece or rod-shaped workpieces are clamped or held by the clamping device only once for both machining steps. Furthermore, it is advantageous that the machining operations are carried out by means of movements of a tool unit in the first and second machining devices. This eliminates the need for extensive measuring requirements to maintain all tolerances when machining the rod-shaped workpieces, since the tool unit has a defined position relative to the clamping device and subsequently to the rod-shaped workpiece at all times.This results in a significant reduction in cycle time per bar-shaped workpiece to be machined, while at the same time achieving higher manufacturing accuracy compared to known state-of-the-art systems.

[0041] Furthermore, it may be expedient for the respective first end section and the respective second end section of two bar-shaped workpieces to be cut simultaneously using the respective sawing device. This results in a further reduction in the cycle time per bar-shaped workpiece, or an increased cycle frequency. Likewise, this configuration results in lower energy consumption per bar-shaped workpiece to be processed due to the reduction in movement sequences compared to a sawing unit that only cuts one bar-shaped workpiece at a time.

[0042] Another advantageous embodiment provides that the first machining device and the second machining device each have two chamfering devices, which are arranged at a distance along the conveying direction, wherein the respective first end and the respective second end of two rod-shaped workpieces are machined simultaneously by means of the two chamfering devices. This is advantageous in that the cycle time for each rod-shaped workpiece to be machined is reduced. The system also operates more efficiently in terms of energy, since individual movement sequences are reduced by the simultaneous feed of two chamfering devices per rod-shaped workpiece to be machined.

[0043] For a better understanding of the invention, it is explained in more detail using the following figures.

[0044] They show in simplified, schematic and exemplary representation: Fig. 1 shows a possible embodiment of the system for end machining of rod-shaped or tubular workpieces; Fig. 2 shows a possible embodiment of a machining device; Fig. 3 shows the lower clamping jaw and the upper clamping jaw of the clamping device in cross section; Fig. 4 shows the first end region and the second end region of a rod-shaped workpiece, respectively; Fig. 5 shows a first chamfering device and a second chamfering device on their common support element of a tool unit; Fig. 6 shows an arrangement of the sawing device, the at least one first chamfering device, and the second chamfering device.

[0045] By way of introduction, it should be noted that in the variously described embodiments, identical parts are provided with identical reference symbols or component designations. The disclosures contained throughout the description can be applied analogously to identical parts with identical reference symbols or component designations. Furthermore, the positional information chosen in the description, such as top, bottom, side, etc., refers to the directly described and illustrated figure, and these positional information must be applied analogously to the new position in the event of a change in position.

[0046] Furthermore, it should be noted that, in accordance with the list of reference symbols, terms from the list of reference symbols are used with and / or without a specific index in the description of the disclosure. If a precise differentiation of the terms with regard to their specific embodiment or positioning is not necessary, no indexes are used. Conversely, for example, a chamfering device 12a is differentiated from a chamfering device 12b according to the respective description, whereby both continue to be chamfering devices 12.

[0047] In the Fig. 11 shows a possibly independent embodiment of the system 1 for end machining of rod-shaped or tubular workpieces. In particular, the system 1 serves to machine a first end 2 and a second end 3 of at least one rod-shaped workpiece 4, wherein the machining of the two ends 2, 3 can be carried out simultaneously for the at least one rod-shaped workpiece 4 on the first machining device 8 and second machining device 9 provided for this purpose. The system 1 comprises a conveying device 5 in which the at least one rod-shaped workpiece 4 can be positioned in a conveying plane 6 transversely to the conveying direction 7.The rod-shaped workpiece 4 can preferably be aligned such that the first end 2 and the second end 3 are simultaneously fed to the respective processing devices 8, 9 by means of the conveying device 5, so that the at least one rod-shaped workpiece 4 is correctly positioned for the subsequent processing.

[0048] The conveying device 5 can comprise a plurality of transport elements 35 in order to support the rod-shaped workpieces 4, particularly in the case of rod-shaped workpieces 4 with a length that is a multiple of the average diameter of a workpiece, in order to limit their deflection due to their own weight. This can further ensure that the ends 2, 3, or a first end region 21 and a second end region 22 of the at least one rod-shaped workpiece 4, are fed to the first processing device 8 and the second processing device 9 in the correct position, i.e., if possible, without deflection along their longitudinal axis and with their longitudinal axis within the conveying plane 6.

[0049] Furthermore, the first processing device 8 comprises a first conveyor 18 and the second processing device 9 comprises a second conveyor 19, which first conveyor 18 is arranged on a first machine frame 20a and which second conveyor 19 is arranged on a second machine frame 20b of the processing devices 8, 9 and are movement-coupled or can be controlled with the same movement. By means of the conveyor 18, 19, it can be ensured that the feeding of the at least one rod-shaped workpiece 4, or the feeding of rod-shaped workpieces, is ensured in the correct position in the direction of conveying direction 7. The correct positional feeding of the rod-shaped workpieces in the direction of conveying direction 7 is particularly important since the processing devices 8, 9 each comprise machines for the precise machining of the end regions or the ends of the rod-shaped workpieces.

[0050] In order to effectively and precisely machine the at least one rod-shaped workpiece 4, the first machining device 8 and the second machining device 9 each comprise a clamping device 10, a sawing device 11, and at least one chamfering device 12, which is arranged in a machine housing 13. The sawing device 11 and the machine housing 13 are arranged on a common support element 14, rigidly coupled relative to one another, and thus, together with the common support element 14, form a tool unit 15 for each machining unit 8 or 9.The tool unit 15a of the first processing device 8 and the tool unit 15b of the second processing device 9 are each movable relative to a respective first and second machine frame 20a, 20b along a first processing direction 16 aligned normal to the conveying plane 6 and along a second processing direction 17 orthogonal to the conveying direction 7 and aligned parallel to the conveying plane 6.

[0051] Furthermore, the processing devices 8, 9 each comprise a clamping device 10 by means of which the at least one rod-shaped workpiece 4 can be positioned and held. For example, it is possible for at least one rod-shaped workpiece 4 or two rod-shaped workpieces 4, 23 or more rod-shaped workpieces to be fed to the processing devices 8, 9 by means of the conveyor device 5 in such a way that the respective end regions are positioned in the clamping devices 10a, 10b. The respective end regions are then held by means of the clamping devices 10a, 10b in order to be able to process the end regions or the ends of the rod-shaped workpieces.

[0052] The machining of at least one rod-shaped workpiece 4 or the rod-shaped workpieces takes place by means of the respective sawing device 11 and the chamfering device 12 of the machining devices 8, 9. First, the ends of the rod-shaped workpiece 4 or the rod-shaped workpieces are cut off by the sawing device 11 in operation when the tool unit 15 is advanced along the first machining direction 16. It is therefore possible that, in addition to cutting off one rod-shaped workpiece 4, several rod-shaped workpieces can also be cut off in this single machining step. To ensure this, the sawing device 11 is arranged in coordination with the clamping device 10 in such a way that the cutting width of the sawing device 11 covers the rod-shaped workpieces to be cut off or their end regions.If a plurality of workpieces are to be cut simultaneously, it is conceivable that a saw blade 36 with a correspondingly large diameter or a band saw blade can be used. At the same time, it should be noted that the diameter of the saw blade 36 of the sawing device 11, in combination with the arrangement of the sawing device 11 on the common support element 14 and the clamping device 10, is selected such that a collision of the sawing device 11 with the clamping device 10 is avoided when the tool unit 15 moves along the first movement direction 16.

[0053] In a second machining step, a chamfer 34 (see Fig. 5a, Fig. 5b) is applied to the capped rod-shaped workpiece 4 by means of the chamfering device 12 in operation while the tool unit 15 is moved in the direction along the second machining direction 17.

[0054] The first processing device 8 and the second processing device 9 are fixedly mounted on a common base frame 33 by means of the respective first and second machine frames 20a, 20b. Furthermore, the transport elements 35 can be mounted on the common base frame 33. The mounting of the processing devices 8, 9 ensures a fixed positioning relative to one another, allowing the rod-shaped workpieces to be cut to their intended length. Consequently, it is possible for the rod-shaped workpieces to be cut to length, or their end regions to be cut, without additional measuring technology according to an intended length value resulting from the positioning of the processing devices 8, 9 relative to one another.At the same time, the intended length of the rod-shaped workpieces can be slightly influenced or changed by the mobility of the respective tool unit 15a, 15b of the processing devices 8, 9 along the second movement direction 17. Furthermore, it is provided that a processing rotation axis 32a of the at least one chamfering device 12a is aligned with a processing rotation axis 32b of the at least one chamfering device 12b by the arrangement of the two processing devices 8, 9 relative to one another on the common base frame 33.

[0055] Furthermore, it is provided that the conveying device 5, or the first conveying means 18, the second conveying means 19 and possibly the transport elements 35 have trough-shaped transport receptacles 29. These trough-shaped transport receptacles 29 are provided for receiving rod-shaped workpieces 4, 23, wherein preferably at least six rod-shaped workpieces can be picked up simultaneously by the conveying device 5 by means of the trough-shaped transport receptacles 29 and transported in the conveying direction 7. It is provided that a single rod-shaped workpiece 4 can be received in each of the trough-shaped transport receptacles 29, which are arranged transversely to the conveying direction 5 in alignment with one another.It is possible that, in addition to the first conveying means 18 and the second conveying means 19, the transport elements 35 are also movement-coupled, or that the conveying means 18 and the transport elements 35 are controlled in a coordinated manner in their movement, so that the rod-shaped workpieces can be fed to the processing devices 8, 9 in the correct position according to their longitudinal axis.

[0056] Furthermore, the rod-shaped workpieces 4, 23 are positioned in the trough-shaped transport receptacles 29 so as to be movable in the conveying direction 7, or the rod-shaped workpieces 4, 23 have in the trough-shaped transport receptacles 29 in the direction along the conveying direction 7 at least a range of movement of a length of up to two average diameters of a rod-shaped workpiece 4, or the rod-shaped workpieces 4, 23 are not fixed or held in the trough-shaped transport receptacles 29 in the direction of the conveying direction 7. It is thus possible that by means of the respective clamping devices 10a, 10b of the processing devices 8, 9, the precise positioning of the rod-shaped workpieces to be processed relative to the respective processing device 8, 9 is possible without tension, since the rod-shaped workpieces are positioned in the trough-shaped transport receptacles 29 so as to be movable in the direction along the conveying direction 7.

[0057] In the Fig. 2 a further and possibly independent embodiment of the processing device 8 or 9 is shown, wherein again the same reference numerals or component designations are used for the same parts as in the previous Fig. 1 To avoid unnecessary repetition, please refer to the detailed description in the previous Fig. 1 pointed out or referred to.

[0058] The clamping device 10 is mounted on the machine frame 20 and comprises a lower clamping jaw 24 relative to the conveying plane 6 and an upper clamping jaw 25, which are movable in the vertical direction or in the direction of the first movement direction 16. If a rod-shaped workpiece 4, or its first or second end region 21 or 22, is conveyed to the respective processing device 8 or 9, it is possible for the rod-shaped workpiece 4 to be picked up by means of the lower clamping jaw 24. The picking up of the rod-shaped workpiece 4 can be accomplished by a movement of the lower clamping jaw 24 in the vertical direction. The rod-shaped workpiece 24 can then be held by means of the upper clamping jaw 25 so that it can then be precisely machined.

[0059] The saw blade 36 can be used as in Fig. 2shown have dimensions such that no collision of the saw blade 36 is possible during a movement in the direction of the second direction of movement 17, or the sawing device 11 is arranged on the common support element 14 in such a way that during a movement of the tool unit 15 in the direction of the second machining direction 17 there is a free space between the clamping device 10, or the upper clamping jaw 25 of the clamping device 10 and the saw blade 36, or the sawing device 11, so that machining of the end 2, or 3, or respectively of the first end region 21, or respectively of the second end region 22 is possible.Furthermore, the positioning of the sawing device 11 on the common support element 14 can be selected such that when cutting at least the at least one rod-shaped element 4, there is a free space between the clamping device 10 and the sawing device 11, so that no collision between components of the tool unit 15 and other machine components is possible.

[0060] Furthermore, it can be provided that the chamfering device 12 is movable relative to its machine housing 13 in the direction of the second machining direction 17. This measure provides an expanded machining range of the tool unit 15, while at the same time, the machining path of the tool unit 15 can be reduced during the feed of the entire tool unit 15.

[0061] In the Fig. 3 , or in Fig. 3a, Fig. 3b and Fig. 3cThree possibly independent embodiments of the lower clamping jaw 24 and the upper clamping jaw 25 of the clamping device 10 are shown, wherein again the same reference numerals or component designations as in the previous illustrations are used for the same parts. The lower clamping jaw 24 has a V-shaped workpiece holder 26 projected onto a cross-sectional area 39. The workpiece holder 26 is oriented such that a rod-shaped workpiece 4 can be received therein, wherein a workpiece longitudinal axis 38 can be aligned normal to the cross-sectional area 39 and the rod-shaped workpiece 4 can be positioned and held in the conveying direction 7 by means of the contact flanks 37a, 37b forming the V-shaped workpiece holder 26.

[0062] The upper clamping jaw 25 can be designed to at least partially complement the lower clamping jaw 24, or to be complementary in shape. As shown in Fig. 3aAs shown, a convex curvature projected onto the cross-sectional area 39 can be formed as a pressure surface 27 in the area of ​​the workpiece holder 26. If the upper clamping jaw 24 is moved toward the upper clamping jaw 25, or vice versa, the rod-shaped workpiece 4 inserted into the workpiece holder 26 is held in the workpiece holder 26 by means of the pressure surface 27. This essentially creates a statically determined holder of the corresponding end region of a rod-shaped workpiece 4 by means of the three contact points between the lower clamping jaw 24, the upper clamping jaw 25, and the rod-shaped workpiece 4.

[0063] It is possible and advantageous if the workpiece holder 26 is designed symmetrically with respect to a vertical plane of symmetry 28. Accordingly, the longitudinal axis 38 of the rod-shaped workpiece 4 positioned in the workpiece holder 26 lies in the plane of symmetry 28, thereby determining the position of the rod-shaped workpiece 4 with respect to the conveying direction 5.

[0064] It is possible that the upper clamping jaw 25 is at least partially designed to be complementary in shape to the lower clamping jaw 24, wherein, as in Fig. 3bAs shown, a V-shaped but complementary pressure cutting edge 40 can be formed in the area of ​​the workpiece holder 26. This allows for the geometry of the V-shaped flanks forming the pressure cutting edge 40 to have a flatter angle to a horizontal than the contact flanks 37a, 37b. This essentially results in a statically determined mounting of the corresponding end region of a rod-shaped workpiece 4 by means of the three contact points between the lower clamping jaw 24, the upper clamping jaw 25, and the rod-shaped workpiece 4.

[0065] Both possible embodiments of the upper clamping jaw 25 have the advantageous effect that rod-shaped workpieces 4 with different average diameters can be accommodated and clamped by means of the clamping device 10. For example, a rod-shaped workpiece 4 with an average diameter that is smaller than the inside depth of the workpiece holder 26 can be held in the clamping device 10 by means of the convex pressure surface 27 or by means of the pressure cutting edge 40.

[0066] Furthermore, an advantageous embodiment can be that the upper clamping jaw 25, with respect to its basic shape, has a workpiece clamp 44 with a V-shaped cross-section. In this case, the V-shaped workpiece clamp 44 can essentially have, with respect to its basic shape, a cross-sectional shape that is the same or similar to that of the V-shaped workpiece holder 26 and that is mirrored in cross section with respect to a horizontal plane or to the conveying plane 6. Thus, the lower clamping jaw 24 and the upper clamping jaw 25 can each have a recess for receiving or clamping the at least one rod-shaped workpiece 4, wherein the respective recesses are aligned opposite one another.

[0067] In the Fig. 4 , or Fig. 4a and Fig. 4bFor better understanding, the first end region 21 and the second end region 22 of a rod-shaped workpiece 4 are shown, wherein the same reference numerals and component designations as in the previous illustrations are used for the same parts. It is possible for the at least one rod-shaped workpiece 4 to be further processed in various ways after cutting along a cutting line 41 using the at least one chamfering device 12. The chamfering device 12 can be a rotating and cutting machine tool. Accordingly, it is possible for a chamfer 34b to be applied as an inner chamfer, for example in the case of a tubular workpiece 4b, in addition to the chamfer 34 or 34a, which is an outer chamfer relative to the rod-shaped workpiece 4.

[0068] In the Fig. 5A further and possibly independent embodiment of a first chamfering device 12 and a second chamfering device 31 on their common support element 14 of a tool unit 15 is shown, wherein again the same reference numerals or component designations are used for the same parts as in the previous illustrations. As shown, a tool unit 15 can comprise two chamfering devices 12, 31, both of which are held on the common support element 14 by means of the machine housing 13 and the second machine housing 31. It can be advantageous for the positioning of the chamfering devices 12, 31 to be arranged in such a way that it corresponds to the lower clamping jaw 24 or to the clamping device 10 that the vertical plane of symmetry 28 of the respective workpiece holders 26c, 26d is aligned with the respective machining axis of rotation 32c, 32d.As a result, the rod-shaped workpieces 4, 23 are positioned such that the workpiece longitudinal axes 38c, 38d are aligned with the machining rotation axes 32c, 32d of the chamfering devices 12, 31 and a precise chamfer is applied to the rod-shaped workpieces simultaneously in one operation when the tool unit 15 is moved in the direction of the second machining direction 17.

[0069] In Fig. 6 A further and possibly independent embodiment of an arrangement of the sawing device 11, the at least one first chamfering device 12 and the second chamfering device 30 is shown, wherein the same reference numerals or component designations are used for the same parts as in the previous illustrations. It shows Fig. 6the at least one first chamfering device 12 and the second chamfering device 30 arranged at a distance along the conveying direction 7 with their machining rotation axes 32a and 32b, respectively. Furthermore, the arrangement of the saw blade 36 of the sawing device 11 is shown, wherein the cutting line 41 of the sawing device 11 covers the at least one rod-shaped workpiece 4 and the second rod-shaped workpiece 23. This ensures that the respective first end section 42 and the respective end section 43 of both rod-shaped workpieces 4 and 23 (see Fig. 5 ) when the tool unit 15 moves in the direction of the first machining direction 16.

[0070] The embodiments show possible embodiments, whereby it should be noted at this point that the invention is not limited to the specifically illustrated embodiments thereof, but rather various combinations of the individual embodiments with each other are also possible and this possibility of variation lies within the skill of the person skilled in the art in this technical field due to the teaching of technical action by means of the objective invention.

[0071] The scope of protection is determined by the claims. However, the description and drawings must be used to interpret the claims. Individual features or combinations of features from the various embodiments shown and described may represent independent inventive solutions. The problem underlying these independent inventive solutions can be derived from the description.

[0072] For the sake of clarity, it should finally be pointed out that, in order to better understand the structure, some elements have been shown out of scale and / or enlarged and / or reduced in size. Reference symbol list

[0073] 30 Second chamfering device 1 Attachment 31 Second machine housing 2 First end 32 Machining rotation axis 3 Second ending 33 Common base frame 4 rod-shaped workpiece 34 chamfer 5 Conveyor device 35 transport organ 6 funding level 36 saw blade 7 Conveying direction 37 Contact edge 8 First processing device 38 Workpiece longitudinal axis 9 Second processing device 39 cross-sectional area 10 clamping device 40 Pressure cutting edge 11 Sawing device 41 Cutting line 12 Chamfering device 42 First final section 13 Machine housing 43 Second final section 14 Common supporting element 44 Workpiece clamping 15 tool unit 16 First processing direction 17 Second processing direction 18 First funding 19 Second funding 20 Machine frame 21 First end area 22 Second end area 23 Second rod-shaped workpiece 24 Lower clamping jaw 25 Upper clamping jaw 26 Workpiece holder 27 Pressure surface 28 Vertical plane of symmetry 29 Tub-shaped transport holder

Claims

1. System (1) for processing a first end (2) and a second end (3) of at least one rod-shaped workpiece (4), comprising - a conveying device (5) in which the at least one rod-shaped workpiece (4) can be positioned in a conveying plane (6) transversely to a conveying direction (7) and by means of which conveying device (5) the at least one rod-shaped workpiece (4) can be conveyed in the conveying direction (7), - a first processing device (8) and a second processing device (9), wherein, by means of the conveying device (5), the first end (2) of the at least one rod-shaped workpiece (4) can be supplied to the first processing device (8) and the second end (3) of the at least one rod-shaped workpiece (4) can be supplied to the second processing device (9), - the first processing device (8) and the second processing device (9) each having a clamping device (10a, 10b), a sawing device (11a, 11b) and at least one chamfering device (12a, 12b), - wherein in the first processing device (8) and in the second processing device (9), in each case the sawing device (11) and a machine housing (13) of the at least one chamfering device (12) are arranged on a joint support element (14) and are held in a fixed position relative to the joint support element (14), - and wherein, in the first processing device (8) and in the second processing device (9), the sawing device (11), the machine housing (13) with the at least one chamfering device (12) and the joint support element (14) each form a first tool unit (15a) and a second tool unit (15b), characterized in that - the first tool unit (15a) of the first processing device (8) is movable relative to a first machine frame (20a) and the second tool unit (15b) of the second processing device (9) is movable relative to a second machine frame (20b) along a first processing direction (16) aligned normal to the conveying plane (6) and along a second processing direction (17) aligned orthogonal to the conveying direction (7) and parallel to the conveying plane (6), and - the respective clamping device (10a, 10b) is movable and positionable relative to the first and second machine frame (20a, 20b) of the respective processing device (8, 9) along the first processing direction (16), a first end region (21) and a second end region (22) of the at least one rod-shaped workpiece (4) being receivable or positionable in the respective clamping device (10a, 10b) of the first processing device (8) and of the second processing device (9).

2. System according to claim 1, characterized in that the conveying device (5), the first processing device (8) and the second processing device (9) are mounted on a joint baseframe (33), a processing rotation axis (32a) of the at least one chamfering device (12a) of the first processing device (8) being aligned with a processing rotation axis (32b) of the at least one chamfering device (12b) of the second processing device (9).

3. System according to any of the preceding claims, characterized in that the conveying device (5) comprises a first conveying means (18) and a second conveying means (19), which first conveying means (18) is mounted on the first machine frame (20a) of the first processing device (8) and which second conveying means (19) is mounted on the second machine frame (20b) of the second processing device (9), wherein the first conveying means (18) and the second conveying means (19) are motion-coupled.

4. System according to any of the preceding claims, characterized in that the respective tool unit (15a, 15b) of the first processing device (8) and of the second processing device (9) comprises, in addition to the at least one chamfering device (12), at least one second chamfering device (30) with a second machine housing (31), the machine housings (13, 31) of the at least one chamfering device (12) and of the at least one second chamfering device (30) being arranged at a distance from one another on the joint support element (14) along the conveying direction (7).

5. System according to claim 4, characterized in that the at least one chamfering device (12) is movable and positionable in a motion-coupled manner relative to its machine housing (13) and the second chamfering device (30) is movable and positionable in a motion-coupled manner relative to its second machine housing (31), each in the direction along the second processing direction (17).

6. System according to any of the preceding claims, characterized in that the first end (2) and the second end (3) of the at least one first rod-shaped workpiece (4) and of a second rod-shaped workpiece (23) can be cut by means of the respective sawing device (11a, 11b) of the first processing device (8) and of the second processing device (9) during a movement of the tool unit (15) along the first processing direction (16).

7. System according to any of the preceding claims, characterized in that the clamping device (10a) of the first processing device (8) and the clamping device (10b) of the second processing device (9) each have a lower clamping jaw (24) and an upper clamping jaw (25) relative to the conveying plane (6), at least one workpiece holder (26) with a V-shaped cross-section being formed in the lower clamping jaw (24) for the at least one rod-shaped workpiece (4).

8. System according to claim 7, characterized in that the upper clamping jaw (25) has a workpiece clamp (44) with a V-shaped cross-section in the region of the V-shaped workpiece holder (26), the cross-sectional geometry of the V-shaped workpiece holder (26) and the V-shaped workpiece clamp (44) being configured essentially symmetrically relative to the conveying plane (6) or symmetrically relative to a horizontal plane.

9. System according to claim 7 or 8, characterized in that the upper clamping jaw (25) is at least partially complementary in shape to the lower clamping jaw (24), the upper clamping jaw (25) having a clamping surface (27) which is convex or V-shaped in cross-section in the region of the V-shaped workpiece holder (26).

10. System according to claim 7, 8 or 9, characterized in that the respective workpiece holder (26) is configured symmetrically relative to a vertical symmetry plane (28), wherein a chamfering device (12) is assigned to each workpiece holder (26) of the system (1) and wherein the processing rotation axis (32) of the assigned chamfering device (12) lies in the vertical symmetry plane (28) of the respective workpiece holder (26).

11. System according to any of the preceding claims, characterized in that the clamping device (10a) of the first processing device (8) and the clamping device (10b) of the second processing device (9) and, in particular, the respective lower clamping jaw (24) and the respective upper clamping jaw (25) are movable and positionable in a movement-coupled manner relative to the first and second machine frame (20a, 20b) in the direction along the first processing direction (16).

12. System according to any of the preceding claims, characterized in that the conveying device (5) has at least two transport components (35), which at least two transport components (35) each have two or more transport holders (29) trough-shaped in cross-section, wherein the trough-shaped transport receptacles (29) are lined up in the conveying direction (7) and wherein the at least one rod-shaped workpiece (4) can be positioned in a freely movable configuration in the conveying direction (7) in a respective trough-shaped transport receptacle (29) of each transport component (35).

13. Processing method for simultaneously processing a first end (2) and a second end (3) of at least one rod-shaped workpiece (4) by means of a system (1), comprising a conveying device (5), a first processing device (8) and a second processing device (9), wherein the first processing device (8) and the second processing device (9) each have a clamping device (10a, 10b) and a tool unit (15a, 15b), which tool units (15a, 15b) each have at least one chamfering device (12) in a machine housing (13) and a sawing device (11), the processing method comprising the steps: - positioning the at least one rod-shaped workpiece (4) in a conveying plane (6) of the conveying device (5) transversely to a conveying direction (7); - simultaneously supplying the first end (2) of the at least one rod-shaped workpiece (4) to the first processing device (8) and the second end (3) of the at least one rod-shaped workpiece (4) to the second processing device (9) by means of the conveying device (5); - positioning a first end region (21) and a second end region (22) of the at least one rod-shaped workpiece (4) in the respective clamping device (10a, 10b) of the first processing device (8) and the second processing device (9); - holding the respective end regions (21, 22) of the at least one rod-shaped workpiece (4) in each case by means of a lower clamping jaw (24) and an upper clamping jaw (25) of the respective clamping device (10a, 10b); - cutting off a first end portion (42) and a second end portion (43) of the at least one rod-shaped workpiece (4) by means of the respective sawing device (11a, 11b) of the first processing device (8) and the second processing device (9); - machining for applying at least one chamfer (34) to the first end (2) and to the second end (3) of the at least one rod-shaped workpiece (4) in each case by means of the at least one chamfering device (12a, 12b) of the first processing device (8) and of the second processing device (9); - wherein the sawing device (11) and the machine housing (13) of the at least one chamfering device (12) are moved as a motion-coupled tool unit (15), characterized in that - the respective tool unit (15a, 15b) is moved relative to a respective machine frame (20a, 20b), - wherein the first end portion (42) and the second end portion (43) of the at least one rod-shaped workpiece (4) are cut by means of the respective sawing units (11a, 11b) in operation during movement of the respective tool unit (15a, 15b) along a first processing direction (16) aligned normal to the conveying plane (6), - and wherein the at least one chamfer is applied to the first end (2) and to the second end (3) of the at least one rod-shaped workpiece (4) by means of the respective chamfering devices (12a, 12b) in operation during movement of the respective tool unit (15a, 15b) along a second processing direction (17) aligned orthogonal to the conveying direction (7) and parallel to the conveying plane (6), - and the first end region (21) and the second end region (22) of the at least one rod-shaped workpiece (4) is received by the conveying device (5) and positioned at the respective processing device (8, 9) respectively by moving or positioning of the clamping device (10a, 10b) relatively to the machine frame (20a, 20b) along the first processing direction (16).

14. Method according to claim 13, characterized in that the respective first end portion (42) and the respective second end portion (43) of two rod-shaped workpieces (4, 23) are cut simultaneously by means of the respective sawing device (11a, 11b).

15. Method according to claim 14, characterized in that the first processing device (8) and the second processing device (9) each have two chamfering devices (12a, 12b), which two chamfering devices (12a, 12b) are arranged spaced apart along the conveying direction (7), the respective first end (2) and the respective second end (3) of two rod-shaped workpieces (4, 23) being machined simultaneously by means of the respective two chamfering devices (12a, 12b).