DE212017000094U1 - Device for supporting a tool unit for handling a workpiece - Google Patents

Abstract

Apparatus (100) for supporting a tool unit (3) for handling, such as machining, and in particular chamfering tubular and round rod-like workpieces (1) having a longitudinal axis, said apparatus comprising a clamping mechanism (2) having a longitudinal axis and thereto is adapted to be rotatably mounted on the workpiece (1) so that the longitudinal axis is substantially perpendicular to the longitudinal axis of the workpiece (1), and wherein the clamping mechanism (2) is adapted to the tool unit (3) with a handling device wherein the clamping mechanism (2) comprises adjustment means (4) for displacing the tool unit (3) relative to the clamping mechanism (2) towards or away from the workpiece (1), and wherein the clamping mechanism (2) comprises a frame member (5 ) and a first and second arm (6, 7) extending therefrom, the arms (6, 7) hinged at one end to the frame member (5) of the tensioning mechanism (2) and at the free end of each arm (6, 7) is mounted an axle (31, 32) provided with at least one guide element (15, 16), and wherein the device further comprises at least one second axle (33, 34) provided with at least one second guide member (35, 36), the frame member (5) of the tensioning mechanism (2) being provided with a tensioning device (20) operable with an operating member (23) Tensioning device having first and second movable portions (21, 22) adapted to be simultaneously moved relative to each other during operation of the operating element (23), and wherein the first arm (6) and the first movable portion (21) by means of a first suspension arm (24) are hinged together, and the second arm (7) and the second movable portion (22) by means of a second suspension arm (25) are hinged together, characterized gekenn characterized in that at least one of the axles (31, 32, 33, 34) is arranged with at least one guide element (15, 16, 35, 36) at an angle with respect to the longitudinal axis of the tensioning mechanism (2), the angle of the deviates from vertical angle.

Description

SCOPE OF THE INVENTION

The invention relates to a device for supporting a tool unit for handling a workpiece, such as cutting, and in particular chamfering tubular and round rod-like workpieces, in particular pipes.

BACKGROUND OF THE INVENTION

Various devices for supporting a cutting tool, such as a milling or chamfering tool, for machining a tubular workpiece are known in the art. The chamfering of an end portion of round tubes, for example with a chamfering cutter, either rotating the tube or rotating the cutting tool around a tube and providing the chamfer in the end portion of the tube, is previously known.

For example, disclosed US2015202699A1 an apparatus for milling workpieces adapted to engage the workpiece at at least four surface engagement points. The apparatus has a tensioning mechanism adapted to be attached to the workpiece. Attached to the clamping mechanism is a tool unit that includes adjustment members for moving the tool unit relative to the clamping mechanism toward or away from the workpiece. The tensioning mechanism has a frame member and arms extending from the tensioning mechanism. Each of the four arms contains a bearing wheel. Each of the wheels may be used to engage a workpiece so that it maintains its position while it is being milled.

Also revealed US2015306682A1 a chip device for machining the side surface of an approximately cylindrical object including in portions thereof a chain for annularly surrounding the object to be cut. The chain consists of at least two articulated links, one of which is a tool holder having at least one tool for cutting the side surface. The device also includes support rollers for rolling on the side surface. The at least one other chain link is a chain link. The chain links are connectable such that they form a closed chain ring around the object to be cut. The chip device further includes a feed adjusting device capable of reversibly adjusting an axial position of facing ends of two chain links parallel to the axis of the closed chain ring relative to each other.

However, there are some drawbacks with respect to the prior art, such as that the support of the chip tool against the pipe to be cut, in particular milling forces induced by chamfering, in particular in an axial direction of the pipe to be cut, tends to be strong to divert or release the cutting tool from the contact of the pipe end to be cut. Due to very large axial milling forces, it is very difficult and problematic to compensate for the tendency to deflect, and in particular in a controlled manner, since there is also a risk that the deflection effect will be compensated or over-forced, causing the cutting tool to move to another Direction in the longitudinal direction of the tube to be picked moves, resulting in an unwanted Spiralfibung in the end portion of the tube.

BRIEF SUMMARY OF THE INVENTION

An object of the invention is to alleviate and overcome the problems with respect to the known art. In particular, it is the object of the invention to provide a device which presses and holds the device with a tool unit during operation in a simple and secure manner in contact with a surface of a workpiece to be cut.

The object of the invention can be achieved by the features of the independent claims.

The invention relates to a device for supporting a tool unit for handling tubular and round rod-like workpieces according to claim 1.

According to one embodiment of the invention, a device for supporting a tool unit for handling tubular and round bar-like workpieces having a longitudinal axis, such as in particular pipes, is developed. Handling involves machining, and in particular chamfering, an end portion of the tube to produce a suitable chamfer, for example, for welding purposes, to weld together two tubes. The apparatus advantageously includes a tensioning mechanism having a longitudinal axis and being adapted to be rotatably mounted on the workpiece such that the longitudinal axis of the tensioning mechanism is substantially perpendicular to the longitudinal axis of the workpiece.

The tensioning mechanism is also adapted to receive the tool unit with a handling device, such as a chamfering unit, so that, for example, the end of the tube can be chamfered. The clamping mechanism additionally comprises adjusting means for displacing the tool unit relative to the clamping mechanism in the direction of the workpiece or away therefrom to thereby facilitate handling. The tensioning mechanism also includes a frame member and first and second arms extending therefrom. The arms are hingedly connected at one end to the frame member of the tensioning mechanism, with an axle attached to the free end of each arm, which with at least one guide member, such as a wheel or rail or other member, for properly guiding the apparatus during the handling along the surface of the workpiece is provided. The device further comprises at least one second axis provided with at least one second guide member.

In addition, the frame member of the tensioning mechanism is provided with a tensioning device, such as a threaded shaft, operable with an operating member, such as a knob. The jig has first and second movable portions to which the first and second arms are pivotally connected by means of first and second suspension arms, so that when the movable portions are simultaneously moved relative to each other during operation of the operating member, the apparatus around the workpiece can be stretched and stretched.

Furthermore, at least one of the axes of the device is arranged with at least one guide element, such as a wheel, at an angle with respect to the longitudinal axis of the clamping mechanism. The angle is chosen such that it deviates from the vertical angle with respect to the longitudinal axis of the clamping mechanism. The angle is advantageously between 0.5 ° -5 °, more preferably between 1 ° -3 ° and most preferably about 2 °. It should be noted that one or more axes are / are inclined with the guide element.

The embodiment with the inclined axis with the guide element offers significant advantages over prior art solutions, in particular, the device can be pressed by the inclined axis with the guide member against the end of the workpiece and so that the milling forces caused by the chamfering in particular an axial direction of the pipe to be cut can be effectively compensated. During operation, and in particular during the movement of the device along the surface of the workpiece, the inclined axis with the guide element pushes the device against the end of the workpiece, whereupon the handling, such as chamfering, can be carried out very simply and accurately and so that the Quality of chamfering accurate, sharp and at a desired angle and in addition so that there is no deviation in the direction of the longitudinal axis of the workpiece, for. B. the chamfer is not a spiral track.

In addition, it should be noted that the angle, but also the material and the type and number of the inclined guide element, the force (in the axial direction of the workpiece) and their strength to press the device against the end of the tube and the "inclination angle" of Guide element in the direction of the longitudinal axis of the workpiece influence, which can be an important factor when the device is driven towards the end of the workpiece. According to one embodiment, the angle of the axis with at least one guide element with respect to the longitudinal axis of the clamping mechanism is advantageously fixed, but may also be arranged to be adjustable, whereby the force component parallel to the longitudinal axis of the workpiece can be easily adjusted.

In one embodiment, at least one of the axle-mounted guide members is a wheel. Most preferably, the wheel is a rotating wheel. In addition, according to one embodiment, the wheel is adapted to rotate in one direction only, whereby the handling of the workpiece is very simple That is, since when a first operating area is traversed (the length of the arc along the surface of the workpiece within reach of the user), the user must move the device backwards but at the same time also rotate the workpiece so that the unhandled portion of the workpiece is in an appropriate position Handling is positioned. If at least one of the wheels is adapted to rotate in one direction only, the wheel will stick in the workpiece as the device is moved back, thereby simultaneously rotating the workpiece without requiring additional user action.

It has been noted that when the guide element is a wheel, and in particular a rotating wheel, the optimum angle is about 2 ° to push the device against the pipe (workpiece) with a suitable force. The material of the wheel is advantageously metal that may have a pattern thereon.

The device may also be adapted to be locked in the handling position around the workpiece in a detachable manner. The lock can z. B. mechanically implemented by a hook and at least one recess, wherein the recess is a counterpart for the hook and is adapted to lock the tool unit in a specific handling position. Alternatively, the lock may be electrically locked by an electromagnet and its counterpart, which are adapted to lock the tool unit in a certain handling position; be implemented. In addition, a hydraulic or pneumatic cylinder can be used as well as a locking element and a recess as a counterpart for the bolt.

The exemplary embodiments illustrated herein are not to be construed as limiting the applicability of the appended claims. The verb "to include" is used in this specification as an open limitation that does not exclude the existence of unrecited features. The claims listed in the dependent features are freely combinable, unless expressly stated otherwise.

The novel features which are considered to characterize the invention are set forth with particularity in the appended claims. However, the invention itself, both as to its construction and method of operation, together with additional objects and advantages thereof, will best be understood from the following detailed description of exemplary embodiments when read in conjunction with the accompanying drawings.

list of figures

• Die 1-4 veranschaulichen Grundsätze einer beispielhaften Vorrichtung zum Abstützen einer Werkzeugeinheit zur Handhabung eines Werkstücks gemäß einer vorteilhaften Ausführungsform der Erfindung,
• 5 veranschaulicht einen Grundsatz einer beispielhaften Vorrichtung mit Führungselementen gemäß einer vorteilhaften Ausführungsform der Erfindung, und
• die 6-7 veranschaulichen ein Beispiel für eine Handhabungsvorrichtung, die eine Anfasvorrichtung gemäß einer vorteilhaften Ausführungsform der Erfindung aufweist, und

Next, the invention will be described in greater detail with reference to exemplary embodiments according to the attached drawings, in which:

• The 1-4 illustrate principles of an exemplary apparatus for supporting a tool unit for handling a workpiece according to an advantageous embodiment of the invention,
• 5 illustrates a principle of an exemplary device with guide elements according to an advantageous embodiment of the invention, and
• the 6-7 illustrate an example of a handling device having a chamfering device according to an advantageous embodiment of the invention, and

DETAILED DESCRIPTION

The 1-4 illustrate principles of an exemplary device 100 for supporting a tool unit 3 for handling a tubular and round rod-like workpiece 1 according to an advantageous embodiment of the invention, wherein the workpiece 1 , such as in particular a tube, a longitudinal axis 1a having ( 6 ). The device advantageously comprises a clamping mechanism 2 , which is a longitudinal axis 2a ( 5 ) and is adapted to the workpiece 1 rotatably mounted so that the longitudinal axis 2a the clamping mechanism is substantially perpendicular to the longitudinal axis of the workpiece.

The clamping mechanism 2 is also designed to handle the tool unit 3 with a handling device 101 such as picking up a chamfering unit so that, for example, the end of the tube can be chamfered. The tensioning mechanism additionally comprises an adjustment means 4 such as a hinge, for moving the tool unit relative to the clamping mechanism towards or away from the workpiece and thereby facilitating handling. The tensioning mechanism also includes a frame member 5 and a first and second arm 6 . 7 that extend from it. The poor 6 . 7 are at one end with the frame element 5 hingedly connected to the tensioning mechanism, wherein at the free end of each arm an axis 31 . 32 is attached, with at least one guide element 15 . 16 , such as a wheel or rail or other element, for properly guiding the device 100 during handling along the surface of the workpiece 1 is provided. The device further comprises at least a second axis 33 . 34 provided with at least one second guide element 35 . 36 is provided.

In addition, the frame element 5 the clamping mechanism 2 with a tensioning device 20 , such as a threaded shaft, with an operating element 23 , such as a knob is operable provided. The tensioning device has first and second movable portions 21 . 22 on, with the first and the second arm 6 . 7 by means of a first and second suspension arm 24 . 25 are hinged, so if the moving sections 21 . 22 during operation of the operating element 23 be moved simultaneously in relation to each other, the device 100 around the workpiece 1 can be stretched and stretched.

5 illustrates a principle of an exemplary device 100 with guide elements 15 . 16 according to an advantageous embodiment of the invention, wherein at least one of the axes 31 . 32 the device with the at least one guide element 15 . 16 at an angle with respect to the longitudinal axis 2a the clamping mechanism 2 is arranged. The angle of the axis 31 . 32 with at least one guide element 15 . 16 is arranged such that the axis 31 . 32 with at least one guide element 15 . 16 When used, exerts a force on a component 102 substantially parallel to the longitudinal axis 1a of Workpiece is. Equally and additionally or alternatively, any other (second) axis may also be used 33 . 34 with at least one second guide element 35 . 36 at an angle with respect to the longitudinal axis 2a the clamping mechanism 2 be arranged.

The 6-7 illustrate an example of a chamfering device 103 as a handling device 101 according to an advantageous embodiment of the invention, wherein the Anfasvorrichtung 103 for chamfering an end section 104 of the workpiece 1 is used. The end section to be started 104 comprises or generates during chamfering at least one section, in particular a chamfer 104 whose normal is an angle, that of the longitudinal axis 1a of the workpiece 1 differs. The chamfering force induced by the chamfering and in particular its directional component parallel to the axial direction of the tube 1a Strongly tends to the chip tool and the device from the contact of the pipe end to be cut 1 to distract or solve. To compensate for this deflection force is the angle of at least one axis 31 . 32 . 33 . 34 with at least one guide element 15 . 16 . 35 . 36 arranged so that when using the axis 31 . 32 . 33 . 34 with at least one guide element 15 . 16 . 35 . 36 exerts a force of which one component 102 the handling device 1 . 101 . 103 against the end section 104 essentially in the direction of the longitudinal axis 1a of the workpiece 1 suppressed.

The chamfering device 103 may include a milling or grinding or knife or blade element for chamfering the material of the pipe to be picked. In addition, the handling device comprises 101 a support element 105 (such as a rolling support element that may be implemented, for example, by a suitable bearing element).

The device or handling device may also include a fine adjustment element 106 ( 3 . 4 ) for moving the handling device 101 or chamfering device 103 and / or the support element 105 in a substantially vertical direction 107 in the direction of the longitudinal axis 1a of the workpiece to be handled 1 include. The fine adjustment element 106 Advantageously, a threaded shaft whose rotation is adapted to the handling device 101 or the chamfering device 103 and / or the support element 105 to shift in a stepless manner.

The device may also include a control 108 , such as a stop member, which is adapted to the displacement movement of the handling device 101 or the chamfering device 103 to limit such that a first non-chamfered section 109 ( 6 ) on the workpiece 1 is left. The first not chamfered section 109 advantageously has a side whose normal substantially parallel to the longitudinal axis 1a of the workpiece 1 is.

According to one embodiment, the extension of the support element 105 in the direction of the longitudinal axis 1a of the workpiece to be cut 1 adjustable, leaving a second non-chamfered section 110 having a side whose normal is substantially perpendicular to the longitudinal axis 1a of the workpiece 1 is, can be left on the workpiece ( 7 ). The length of the second non-chamfered section 110 can about the extension of the support element 105 in the direction of the longitudinal axis 1a of the workpiece to be cut 1 be set.

The adjustability of the extension of the support element 105 in the direction of the longitudinal axis 1a of the workpiece 1 can by changing the outer dimension of the support element 111 and / or by a later adjustment element 111 for moving the support element 105 essentially in the direction of the longitudinal axis 1a be implemented of the workpiece. In addition, the support element 105 according to one embodiment may be arranged in an eccentric manner, whereby the extent to which the portion is to abut the workpiece, can be adjusted by the support element 105 is rotated about the eccentric axis.

In addition, it should be noted that the second axes 33 . 34 to be adjusted by means of the tensioning device 20 (such as a threaded shaft 20 ) simultaneously with the axes 31 . 32 at the ends of the arms 6 . 7 are present, to be adjusted, with each of the second axes 33 . 34 advantageously with one of the movable sections 21 . 22 the tensioning device is connected or wherein each of the second axes 33 . 34 with one of the arms 6 . 7 connected is.

In addition, according to one embodiment, at least two of the second axes 33 . 34 , each with at least one guide element 35 . 36 are provided, either in terms of their mutual distance between the arms 6 . 7 and the frame element 5 be adjustably mounted, or fixed to the frame element 5 to be appropriate.

In addition, the frame element 5 the clamping mechanism 2 according to an exemplary embodiment in a rotatable and axially immovable manner with a threaded shaft 20 (as a clamping device 20 ), the first end of which is provided with a first nut 21 (as the first movable portion) provided provided right-hand thread and the second end having a second mother 22 (as a second movable portion) provided left-hand thread, wherein the threaded shaft 20 with the element 23 for turning the threaded shaft 20 is provided, the first arm 6 and the first mother 21 by means of a first suspension arm 24 articulated with each other, and the second arm 7 and the second mother 22 by means of a second suspension arm 25 are hinged together.

The invention has been explained above with reference to the aforementioned embodiments, and several advantages of the invention have been demonstrated.

It is obvious that the invention is not limited only to these embodiments, but includes all possible embodiments falling within the spirit and scope of the inventive idea and the following claims. The claims listed in the dependent features are freely combinable, unless expressly stated otherwise.

Even if the chamfering is described as a detailed example of handling, the device may also be used for other handling in which the device must be pressed against the end of the workpiece. In addition, it should be appreciated that the apparatus may also be used such that the force components parallel to the longitudinal axis of the workpiece are also used to move the apparatus along the surface of the workpiece both in the direction of the longitudinal axis of the workpiece in addition to moving the apparatus around the workpiece can.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 2015202699 A1 [0003]
• US 2015306682 A1 [0004]

Claims (15)

Apparatus (100) for supporting a tool unit (3) for handling, such as machining, and in particular chamfering tubular and round rod-like workpieces (1) having a longitudinal axis, said apparatus comprising a clamping mechanism (2) having a longitudinal axis and thereto is adapted to be rotatably mounted on the workpiece (1) so that the longitudinal axis is substantially perpendicular to the longitudinal axis of the workpiece (1), and wherein the clamping mechanism (2) is adapted to the tool unit (3) with a handling device wherein the clamping mechanism (2) comprises adjustment means (4) for displacing the tool unit (3) relative to the clamping mechanism (2) towards or away from the workpiece (1), and wherein the clamping mechanism (2) comprises a frame member (5 ) and a first and second arm (6, 7) extending therefrom, the arms (6, 7) hinged at one end to the frame member (5) of the tensioning mechanism (2) and at the free end of each arm (6, 7) is mounted an axle (31, 32) provided with at least one guide element (15, 16), and wherein the device further comprises at least one second axle (33, 34) provided with at least one second guide member (35, 36), the frame member (5) of the tensioning mechanism (2) being provided with a tensioning device (20) operable with an operating member (23) Tensioning device having first and second movable portions (21, 22) adapted to be simultaneously moved relative to each other during operation of the operating element (23), and wherein the first arm (6) and the first movable portion (21) by means of a first suspension arm (24) are hinged together, and the second arm (7) and the second movable portion (22) by means of a second suspension arm (25) are hinged together, characterized gekenn characterized in that at least one of the axles (31, 32, 33, 34) is arranged with at least one guide element (15, 16, 35, 36) at an angle with respect to the longitudinal axis of the tensioning mechanism (2), the angle of the deviates from vertical angle. Device after Claim 1 , wherein the angle of the axis (31, 32, 33, 34) with at least one guide element (15, 16, 35, 36) is arranged such that the axis (31, 32, 33, 34) with at least one guide element (15 , 16, 35, 36) in use exerts a force of which a component is substantially parallel to the longitudinal axis of the workpiece (1). Device according to one of the preceding claims, wherein the tool unit (3) comprises a handling device for handling an end portion of the workpiece (1), wherein the angle of the axis (31, 32, 33, 34) with at least one guide element (15, 16, 35 , 36) is arranged such that the axis (31, 32, 33, 34) with at least one guide element (15, 16, 35, 36) in use exerts a force, of which a component of the handling device against the end portion substantially in the direction of the longitudinal axis of the workpiece (1) presses. Device according to one of the preceding claims, wherein the handling device comprises a chamfering device and a support element, wherein the angle of the axis (31, 32, 33, 34) with at least one guide element (15, 16, 35, 36) is arranged such that the Axis (31, 32, 33, 34) with at least one guide element (15, 16, 35, 36) in use exerts a force, of which a component at least the support element against the end portion substantially in the direction of the longitudinal axis of the workpiece (1 ) presses. Device according to one of the preceding claims, wherein the handling device comprises a chamfering device and a support element, and wherein the device comprises a fine adjustment for moving the Anfasvorrichtung and / or the support member in a substantially vertical direction in the direction of the longitudinal axis of the workpiece to be handled (1) , Device after Claim 5 wherein the fine adjustment element comprises a threaded shaft, the rotation of which is designed to move the chamfering device and / or the support element in a stepless manner. Device according to one of Claims 5 - 6 wherein the device comprises a control element, such as a stop element, configured to limit the displacement movement of the chamfering device such that a first non-chamfered portion is left on the workpiece (1), the first ungestacked portion having a side whose normal is substantially parallel to the longitudinal axis of the workpiece (1). Device according to one of Claims 5 - 7 wherein the extension of the support member in the direction of the longitudinal axis of the workpiece to be cut (1) is adjustable such that a second non-chamfered portion having a side whose normal is substantially perpendicular to the longitudinal axis of the workpiece (1) the workpiece (1) is left, and wherein the length of the second non-chamfered portion on the extension of the support element in the direction of the longitudinal axis of the workpiece to be machined (1) is adjustable. (3C) Device after Claim 8 wherein the adjustability of the extension of the support member in the direction of the longitudinal axis of the workpiece (1) may be implemented by changing the outer dimension of the support member and / or by a later adjustment member for displacing the support member substantially in the direction of the longitudinal axis of the workpiece. Device according to one of the preceding claims, wherein the angle of the axis (31, 32, 33, 34) with at least one guide element (15, 16, 35, 36) with respect to the longitudinal axis of the clamping mechanism (2) is either fixed or so arranged is that it is adjustable, whereby the force component can be adjusted parallel to the longitudinal axis of the workpiece (1). Device according to one of the preceding claims, wherein the device comprises at least two of the second axes (33, 34), wherein each of the axes is provided with at least one guide element (35, 36), wherein the second axes (33, 34) either: - With respect to their mutual distance between the arms (6, 7) and the frame member (5) adjustable (100) or - Fixed (200) on the frame member (5) are mounted. Device according to one of the preceding claims, wherein the frame element (5) of the clamping mechanism (2) is provided in a rotatable and axially immovable manner with a threaded shaft (20) whose first end has a right-hand thread provided with a first nut (21) and whose second end having a left hand nut provided with a second nut (22), the threaded shaft (20) being provided with the element (23) for rotating the threaded shaft (20), the first arm (6) and the first nut 21) by means of a first suspension arm (24) are hinged together, and the second arm (7) and the second nut (22) are hinged together by a second suspension arm (25). Apparatus according to any one of the preceding claims, wherein the apparatus (100) is adapted to be locked in the handling position in a releasable manner (400A-404D). Device according to one of the preceding claims, wherein at least one (15) of the guide elements (15, 16, 35, 36) mounted on the axles (31, 32, 33, 34) is a wheel and is adapted to itself and one of the rotatable wheels is adapted to rotate in one direction only. Device according to one of the preceding claims, wherein at least one of the guide elements (15, 16, 35, 36) is a rotatable guide element, such as a wheel or a roller, and wherein the device is adapted to rotate about the guide element and thereby rotatably moving the device (100) along the surface of the workpiece (1) substantially about the longitudinal axis of the workpiece (1).

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