CN214769653U

CN214769653U - Machine tool for tube machining

Info

Publication number: CN214769653U
Application number: CN202120512956.5U
Authority: CN
Inventors: T·豪格; T·波普
Original assignee: Trumpf Werkzeugmaschinen SE and Co KG
Current assignee: Trumpf Werkzeugmaschinen SE and Co KG
Priority date: 2020-03-11
Filing date: 2021-03-11
Publication date: 2021-11-19
Anticipated expiration: 2031-03-11
Also published as: DE202020101342U1

Abstract

The utility model relates to a lathe (810) for pipe machining, it has: a feeding station (816) having a chuck (818) for gripping a tube; a tool (812) for machining the tube; an aspiration device (824) for aspirating tube processing byproducts from the tube through the chuck (818).

Description

Machine tool for tube machining

Technical Field

The utility model relates to a lathe for pipe processing, this lathe have and feed station and instrument, feed station has the (holding) chuck that is used for the tight pipe of clamp, the instrument is used for processing the pipe.

Background

Such machine tools are known and are well known from the prior art.

By-products (abdallprodukte) such as swarf, nose, dust, cutting slag etc. are often produced when machining pipes with tools. Process gases used to assist in the processing or gases formed when processing the tube can also be formed as by-products.

SUMMERY OF THE UTILITY MODEL

The task of the utility model is to improve the mode of sending away of the accessory substance of pipe processing.

According to the utility model discloses, this task is through according to the utility model discloses a lathe solves. The invention also provides an advantageous embodiment.

According to the utility model discloses set up a lathe for pipe machining. The machine tool has a feed station with a chuck for gripping the tube. The machine tool also has a tool for machining the tube. The feed station enables the tube clamped in the chuck to be moved relative to the tool. The feed station enables the tube to be moved in particular in translation along its longitudinal axis. Furthermore, the feed station can be configured to rotate the tube about its longitudinal axis. By moving the tube relative to the tool, the tube can be machined in a desired manner, in particular along a predetermined contour, by means of the tool. A "tube" is to be understood in particular as an elongated object having a slot which runs continuously along a longitudinal axis. In principle, the continuous slot is completely surrounded by the tube wall of the tube. The cuts can be introduced into the tube wall when the tube is being processed. The cross section, in particular the outer cross section, can have a basically arbitrary shape, and in general the cross section of the continuous slot can also have a basically arbitrary shape. The tube can in particular be a round tube. Alternatively, the tube can also have a polygonal cross section, for example a rectangular cross section, and in particular be designed with a square cross section.

According to the utility model discloses, the lathe still has the suction device, and this suction device is used for passing the accessory substance that the pipe processing was drawn out to the (holding) chuck from the pipe. The suction device makes it possible to remove the by-products formed during the machining process from the machining site so that they do not interfere during the machining process, nor are they removed from the machine tool together with the finished pipe part. The aspiration device makes it possible in particular to discharge the slag produced during the laser cutting process. By suction, the opposite side of the tube (Rohrgegenseite) is protected from adhering particles (slag) or adhesion is reduced. Furthermore, the suction device can suck out the gas in the working chamber. Due to the suction through the tube and the chuck, the suction device is decoupled from the machining section of the tube and can be flexibly configured and arranged at a suitable location of the machine tool. The suction device sucks out the by-products in principle in the following manner: a negative pressure is applied on the end of the tube clamped in the chuck, so that an air flow is generated through the tube towards and through the chuck. The air flow causes the byproducts to be transported through the tube and chuck. In general, an "air flow" is a flow of gas, usually ambient air, which, depending on the tool, is enriched with or replaced by process gas, for example protective gas and/or cutting gas, for assisting the tube machining.

Preferably, the suction device has a separating device for separating coarse by-products from finely divided by-products. The coarse and fine by-products can thus be discharged and removed separately or used further. Coarse by-products can be, in particular, so-called nibs, larger chips or pieces cut from the tube. The finely divided by-products can be, in particular, dust, cutting slag or smaller swarf.

The separating apparatus can have baffles. In particular, the coarse by-products bounce back more strongly at the baffle, so that a mechanical separation is achieved.

The separating apparatus can have a screen element. In principle, the screen element has a plurality of openings through which only finely divided by-products can pass. The coarse by-products are retained by the screen elements. The screen element can be configured as an aperture plate. This enables a particularly robust configuration.

Particularly preferably, the separating apparatus is arranged on the feed station. In this way, the separation of coarse and fine by-products can take place directly behind the chuck. This simplifies further discharge or temporary storage of the corresponding by-products.

The aspiration device can have an aspiration hose. A negative pressure generating device capable of engaging the suction device via a suction hose. Furthermore, the suction hose can be used to flexibly carry away the by-products.

Preferably, the aspiration hose is engaged on the feeding station. This simplifies the application of the underpressure required for suction to the end of the chuck or the tube clamped in the chuck. The connection of the negative pressure generating device with the feeding station via the aspiration hose allows to arrange the negative pressure generating device remote from the feeding station. In particular, a common vacuum generating device can be provided for a plurality of machine tools.

Particularly preferably, the aspiration hose is guided together with the at least one supply line of the feed station in a cable guide. This simplifies the structure of the machine tool and ensures a reliable guidance of the suction hose. The at least one supply line or one of the plurality of supply lines can be an electric cable for supplying electric energy to the feeding station, a pneumatic hose for supplying compressed air to the feeding station or a hydraulic hose for supplying hydraulic liquid to the feeding station. The cable guide can also be referred to as an energy chain. The cable guide can be configured in a chain with chain links which are articulated to one another and in or on which the aspiration hose and the at least one supply line are guided.

It is very particularly preferred if an aspiration hose is arranged on the separating device for aspirating the finely divided by-product. The finely divided by-product can thus be discharged from the separating apparatus in a simple manner by means of the suction hose. The coarse by-products are not discharged here via the suction hose, but are usually temporarily retained in a collection chamber on the separating device.

Advantageously, it is further provided that the suction device has a collection chamber for collecting the by-products. If the aspiration device has a separating apparatus, the collection chamber is preferably arranged on the separating apparatus for collecting the coarse by-products. The coarse by-products are thus retained in the collection chamber, while the finely divided by-products are usually discharged from the separating apparatus, preferably via a suction hose.

The collection chamber can be arranged on the feed station. The by-product can then be received immediately after being discharged from the clamped end of the tube or after passing through the chuck. This simplifies the construction of the suction device.

Preferably, the collection chamber is closed with a flap that can be opened. During operation, the flap is in principle closed in order to suck off the by-products. To remove the byproducts from the collection chamber, the flap can be opened. This makes it possible to discharge the collected by-products from the collection chamber, for example during an interruption in operation, such as when a new tube is clamped.

An actuator, preferably a hydraulic or pneumatic cylinder, can be provided for automatically opening the flap. This simplifies the emptying of the collection chamber.

The machine tool can have a receiving chamber for receiving the byproduct from the collection chamber. The by-product can thus be temporarily stored in the receiving chamber. The receiving chamber is typically larger than the collection chamber. The volume of the receiving chamber is preferably at least five times, particularly preferably at least ten times, very particularly preferably at least twenty times the volume of the collecting chamber. The collection chamber is usually emptied at short intervals, preferably automatically, while the receiving chamber can be emptied at larger intervals, for example once a day, in particular manually.

An evacuation device for evacuating the receiving chamber into the byproduct container can be provided on the receiving chamber. The by-product container enables reliable transport away of the by-product. The evacuation device can be configured for manual or automated manipulation.

The feed station and the tool can be arranged on a machine bed of a machine tool. The machine bed usually forms a stable basic structure of the machine tool, on which other components of the machine tool can be held or guided. Preferably, the feed station is movable on a machine bed of the machine tool.

The tool can be arranged on the machine bed fixedly with respect to the longitudinal axis of the pipe to be machined. This simplifies the attachment of the tool to the machine bed. The tool can be mounted on the machine bed so as to be movable transversely to the longitudinal axis in one or two directions, preferably orthogonal to one another. This can simplify the processing of the tube. The tools arranged on the machine bed can be supported in a pivotable manner. Thereby, an additional degree of freedom is provided in the process of machining the tube.

In order to simplify the structure of the machine tool, it is possible to provide: the receiving chamber is fixedly arranged on the machine bed. In order to empty the collecting chamber into the receiving chamber, the feed station and the collecting chamber are usually moved above the receiving chamber.

The chuck can have a plurality of, preferably four, clamping segments. The clamping section enables clamping of the tube on the chuck. Preferably, the clamping section is configured for abutting against the tube in a sealing manner. This simplifies the aspiration of by-products from the tube through the chuck.

The tool is preferably a laser machining head. The laser machining head enables flexible and rational tube machining.

Other advantages of the invention emerge from the description and the drawings. The features mentioned above and those yet to be explained further can also be used in any suitable combination, individually or together, in each case individually or in multiple. The embodiments shown and described are not to be understood as exhaustive enumeration but rather have exemplary character for the description of the invention.

Drawings

The invention is presented in the figures and explained in detail by means of an embodiment. The figures show:

fig. 1 shows a machine tool according to the invention in a schematic top view, with a tool in the form of a laser processing head, a feed station that can be moved along the machine bed, a chuck for gripping a tube and an aspiration device for byproducts of the tube processing, which is arranged on the feed station;

fig. 2 shows in a schematic perspective view a feed station of the machine tool of fig. 1 from the perspective of a chuck, wherein the chuck has four clamping segments for clamping the tube;

fig. 3 shows a schematic top view of a feed station of the machine tool of fig. 1, wherein a separating device is arranged in a container on the feed station, from which a suction hose extends in a cable guide;

fig. 4 shows a schematic perspective view of the feed station of the machine tool of fig. 1, wherein it can be seen that the separating device is configured with an insert that can be removed and the collection chamber for coarse by-products is closed by a flap that can be opened automatically;

fig. 5 shows the feed station of the machine tool of fig. 1 in a schematic longitudinal section, wherein it can be seen that the separating apparatus has a baffle and a screen element in the form of a perforated plate;

fig. 6 shows a schematic longitudinal section of the feed station as in fig. 5, however, in the opposite viewing direction, wherein it can be seen that the suction hose for sucking out the finely divided by-products is arranged behind the screen plate and the screen elements of the separating apparatus.

Detailed Description

Fig. 1 shows a machine tool 810. The machine tool 810 is used for machining pipes not represented in detail. The tube can have in principle any cross section. For example, the cross section of the tube can be circular, elliptical or polygonal, in particular rectangular or square. The tube has in principle a slot running in the longitudinal direction and a tube wall surrounding the slot. For machining the pipe, the machine tool 810 has a tool 812, here a laser machining head shown in a very abstract manner. The tool 812 can be arranged on a machine bed 814 of the machine tool 810.

To move the tube relative to the tool 812, a feed station 816 is provided. The feeding station 816 has a chuck 818 (see also fig. 2) for gripping the tube. In the clamped state, the tube extends along the longitudinal axis 820 from the feeding station 816 to the tool 812 or past the tool 812. The feed station 816 is movable relative to the machine bed 814 and the tool 812 along a longitudinal axis 820. The chuck 818 is capable of rotating (with the clamped tube) about a longitudinal axis 820. The chuck 818 can have a plurality, here four, clamping segments 822. The clamping segments 822 are each guided so as to be movable in a radial direction relative to the longitudinal axis 820. By bringing the gripping segments 822 closer to each other or the gripping segments 822 closer to the longitudinal axis 820, the tube can be clamped between the gripping segments 822.

In order to remove the byproducts of the pipe machining, such as cut-off pipe wall sections, stubs, chips, dust, cutting slag, etc., and/or process gases or gases formed during the machining process, from the machining region of the tool 812, the machine tool 810 has an extraction device 824. By way of the suction device 824, byproducts can be sucked out of the tube through the chuck 818. In order to be able to apply the underpressure required for sucking out the byproducts from the tube to the clamped tube end, the clamping section 822 is designed to bear in a sealing manner against the tube. For this purpose, the clamping section 822 can have an abutment element 826 for abutment against the tube wall of the tube from the outside.

The suction device 824 can have a vacuum generating device, not shown in detail, which provides the vacuum required for sucking out the byproducts. The negative pressure generating device can be connected to the feeding station 816 via a suction hose 828 (see also fig. 3 to 4). The aspiration hose 828 is preferably guided together with supply lines, not shown in detail, such as electrical and/or pneumatic hoses, in a cable guide 830. The cable guide 830 ensures that the aspiration hose and the supply line are not jammed or even damaged in the event of a movement of the feed station 816 on the machine bed 814. In this regard, the cable guide 830 ensures the following of the aspiration hose 828 and the supply line.

The suction device 824 has a separation apparatus 832 (see fig. 5 and 6). Separation apparatus 832 is used to separate the coarse and fine byproducts from each other. Separation apparatus 832 can be configured with an removable insert 834 (see fig. 4).

In operation of the aspirator 824, byproducts exiting the chuck 818 are drawn through the connecting tube 836 into the container 838 of the aspirator 824. The separation device 832 is arranged in the container 838 and can be releasably secured to the container wall 840. The container 838 and separating apparatus 832 are disposed behind the chuck 818 in the presented embodiment of the machine tool 810 (on the feeding station 816 as viewed from the tool 812).

Separation device 832 has a baffle 842. The flap 842 is arranged on the extension of the connecting tube 836 so that, in particular, larger by-products fly against the flap 842 due to their inertia and are deflected downwards by the flap. To this end, the baffles 842 can be oriented at an angle of about 45 ° (plus/minus 20 °) relative to horizontal.

Separating apparatus 832 also has a screen element 844. The screen element 844 can be a perforated plate. The perforated plate is bent several times. A section of the perforated plate rests against the stop 842 and can be fastened, for example screwed, thereto. The screen elements 844 have apertures through which only finely divided byproducts can pass. Coarser by-products are retained by the screen elements 844.

The baffle 842 and the screen element 844 are fastened on the removable insert 834 in the presented embodiment of the machine tool 810. This makes it possible to adapt the separating device 824 to other size separations of the by-product in a simple manner by exchanging the insert 834.

Together with the cover element 845, which is U-shaped here, the baffle 842 and the sieve element 844 enclose a space 846 into which only fine by-products can reach. Transversely to the longitudinal axis 820, the space 846 is bounded on one side by the fastening plate 847 of the insert 834 and the container wall 840 (see fig. 4 and 5). On the other side, the space 846 is bounded transversely to the longitudinal axis 820 by a further vessel wall 848 (see fig. 6). On the vessel wall 848, the suction hose 828 leads into the vessel 838. The suction hose 828 is here connected to a space 846 which can only be reached by the finely divided by-product. In other words, the suction hose 828 is arranged such that the finely divided by-products can be sucked out of the separation device 832 via the suction hose 828. To this end, the finely divided by-products bypass the baffle 842 and are drawn through the screen element 844.

The coarse by-products that cannot pass through the screen element 844 fall from the separating device 832 downwards into a collection chamber 850, which is built up in the container 838 on the feeding station 816. Collection chamber 850 is closed by an openable flap 852. In the closed state (represented in fig. 4 to 6), flap 852 prevents by-products from falling out of collection chamber 850. To empty the collection chamber 850, the flap 852 can be opened. An actuator 854 can be provided for opening flap 852. The actuator 854 can be, for example, a pneumatic cylinder. It can be provided that the actuator 854 is configured for: when the collection chamber 850 is located above a receiving chamber (not shown in detail) fixedly arranged on the machine bed 814, the flap 852 is automatically opened.

List of reference numerals

810 a machine tool;

812 tools;

814 a machine bed;

816 a feeding station;

818 a chuck;

820 longitudinal axis;

822 a clamping section;

824 aspiration means;

826 an abutment element;

828 suction hose;

830 a cable guide;

832 separate devices;

834 an insert;

836 connecting tube;

838 container;

a container wall 840;

842 a baffle plate;

844 screen elements;

845 a cover member;

846 space;

847 fastening plates;

848 a container wall;

850 a collection chamber;

852 with a removable cover;

854 an actuator.

Claims

1. A machine tool (810) for pipe machining having:

a feeding station (816) having a gripping chuck (818) for gripping the tube,

-a tool (812) for machining the tube,

-an aspiration device (824) for aspirating tube processing byproducts from the tube through the chuck (818).

2. Machine tool (810) according to claim 1, characterized in that the suction device (824) has a separation apparatus (832) for separating coarse by-products from fine by-products.

3. The machine tool (810) according to claim 2, wherein the separation device (832) has a baffle (842).

4. Machine tool (810) according to claim 2 or 3, characterized in that the separating device (832) has a sieve element (844).

5. The machine tool (810) according to claim 2 or 3, characterized in that the separation device (832) is arranged on the feeding station (816).

6. The machine tool (810) of claim 2, wherein the aspiration device (824) has an aspiration hose (828).

7. The machine tool (810) of claim 6, wherein the aspiration hose (828) is engaged on the feed station (816).

8. The machine tool (810) according to claim 6 or 7, wherein the aspiration hose (828) is guided together with the supply line of the feeding station (816) in a cable guide (830).

9. The machine tool (810) according to claim 6, wherein the aspiration hose (828) is arranged on the separation device (832) for aspirating finely divided by-products.

10. The machine tool (810) of claim 2, wherein the aspiration device (824) has a collection chamber (850) for collecting byproducts.

11. The machine tool (810) according to claim 10, wherein the collection chamber (850) is arranged on the feeding station (816).

12. Machine tool (810) according to claim 11, characterized in that said collection chamber (850) is closed by means of a flap (852) that can be opened.

13. Machine tool (810) according to claim 12, characterised in that an actuator (854) is provided for automatically opening the flap (852).

14. The machine tool (810) of claim 10, wherein the machine tool (810) has a receiving chamber for receiving byproducts from the collection chamber (850).

15. The machine tool (810) according to claim 14, wherein an emptying device for emptying the receiving chamber into a by-product container is provided on the receiving chamber.

16. The machine tool (810) according to claim 14 or 15, wherein the feed station (816) and the tool (812) are arranged on a machine bed (814) of the machine tool (810).

17. The machine tool (810) of claim 16, wherein the feed station (816) is movable on a machine bed (814) of the machine tool (810).

18. The machine tool (810) according to claim 16, characterized in that the tool (812) is movably and/or pivotably arranged on the machine bed (814).

19. The machine tool (810) according to claim 16, wherein the receiving chamber is fixedly arranged on the machine bed (814).

20. The machine tool (810) according to any of claims 1 to 3, wherein the chuck (818) has a plurality of clamping segments (822) configured for bearing in a sealing manner against the tube.

21. The machine tool (810) according to any of claims 1 to 3, wherein the tool (812) is a laser machining head.

22. The machine tool (810) of claim 4, wherein the screen element (844) is a perforated plate.

23. The machine tool (810) of claim 10, wherein the collection chamber (850) is configured to collect coarse byproducts.

24. The machine tool (810) of claim 13, wherein the actuator (854) is a hydraulic cylinder or a pneumatic cylinder.

25. The machine tool (810) according to claim 18, wherein the tool (812) is movably arranged on the machine bed (814) transversely to the longitudinal axis of the tube to be machined.

26. The machine tool (810) of claim 20, wherein the chuck (818) has four clamping segments (822).