DE102017213985A1 - Cutting device and energy absorption device - Google Patents

Abstract

In order to provide a cutting device which allows a defined deceleration of guided carriage systems, it is proposed that the cutting device comprises: a base body having a longitudinal central axis which is parallel to a cutting direction of the cutting device; and two or more cutting elements for cutting an element to be cut, the two or more cutting elements extending outwardly from the longitudinal central axis of the base body.

Description

The present invention relates to a cutting device for an energy absorbing device.

Energy absorption devices can for example be mounted on vehicles or vehicle components, in order to be able to absorb energy in the event of an impact of the vehicle or the vehicle component on an obstacle by deformation and / or friction and / or cutting, in particular with brittle fracture.

The present invention has for its object to provide a cutting device, which is simple in construction and allows a reliable and uniform cutting of an element to be cut.

• - einen Grundkörper, welcher eine Längsmittelachse aufweist, die parallel zu einer Zerschneiderichtung der Schneidvorrichtung verläuft; und
• - zwei oder mehrere Schneidelemente zum Zerschneiden eines zu zerschneidenden Elements, wobei die zwei oder die mehreren Schneidelemente sich von der Längsmittelachse des Grundkörpers nach außen weg erstrecken.

This object is achieved according to the invention by a cutting device, which comprises:

• a main body having a longitudinal central axis which is parallel to a cutting direction of the cutting device; and
• - Two or more cutting elements for cutting an element to be cut, wherein the two or more cutting elements extend away from the longitudinal central axis of the base body to the outside.

The fact that the cutting elements extend outwardly, a uniform impact of the cutting elements can be realized on the element to be cut and a uniform cutting of the element to be cut.

By means of, in particular uniform, cutting of the element to be cut, a crash of a first test part, for example of an impactor element, onto a second test part, for example a vehicle component, may preferably be delayed in crash tests.

Preferably, the cutting device comprises three or more cutting elements. A number of three or more cutting elements, which are arranged in particular symmetrically with respect to the longitudinal central axis, may preferably offer the advantage that a stability of the cutting device is increased.

The "stability" is preferably defined by the amount of torque that must act on a body to overturn it.

The vehicle component is, for example, a part of a vehicle body.

The test pieces preferably comprise slide elements and / or are attached to slide elements. The carriage elements are in particular components of test devices for crash tests.

It may be favorable if the cutting device is fixed to a slide element, for example a stand slide.

It can be provided that a tube, which comprises slots, is pushed onto the cutting device or becomes. In particular, a number of slots of the tube correspond to the number of cutting elements of the cutting device.

Preferably, a further slide element, for example an accelerated impactor slide, is supplied on rails to the slide element, for example the stand slide, and / or can be fed thereto. At the further carriage element, for example the accelerated impactor carriage, in particular the element to be cut and / or a catching cone of the element to be cut is defined.

In particular, the cutting of the element to be cut enables a reproducible conversion of an amount of energy when the cutting device impacts (impact energy) on the element to be cut into a cutting energy quantity (cutting energy).

The cutting of the element to be cut by means of the cutting device preferably allows a constant force curve during cutting, in particular with respect to an oscillating force curve in conventional energy absorption devices, in which substantially exclusively Faltenbulung a tube is used for energy absorption.

The cutting energy preferably comprises deformation energy and / or heat energy and / or friction energy and / or cutting energy.

The cutting energy received by the cutting device for cutting the element to be cut preferably corresponds substantially to an amount of energy absorbed by the energy absorbing device.

The aforementioned structure of the cutting device preferably has the advantage that the element to be cut in at least one approximately constant force curve of a cutting force can be cut.

It may be favorable if the cutting elements extend radially away from the longitudinal central axis of the main body.

It can be provided that the cutting elements protrude beyond the main body of the cutting device to the outside.

Preferably, the cutting elements protrude freely away from the main body of the cutting device.

In particular, "free" means that the cutting elements extend substantially radially away from the longitudinal central axis of the main body of the cutting device without radial guidance of the cutting device.

By virtue of the fact that the cutting elements preferably protrude outwardly away from the main body of the cutting device, in particular by means of the cutting elements, cut material of the element to be cut can be pressed outwardly away from a longitudinal central axis of the element to be cut.

It may be favorable if the cutting elements are formed without a frame that is radially outer with respect to the longitudinal central axis of the main body and / or without a frame of the cutting device that is radially outer with respect to the longitudinal central axis of the main body.

"Radial guide", "socket" and / or "frame" preferably do not comprise the element to be cut or cut parts of the element to be cut during cutting.

This preferably has the advantage that frictional forces, which arise when pinching of parts of the element to be cut in a cut state between cutting elements and a radially outer guide, can be avoided. Thus, in particular force fluctuations in the force curve, which occur through the emergence of these frictional forces, can be avoided.

The cutting elements are preferably separate components and / or individually exchangeable.

It may be favorable if the cutting device comprises two, three, four, five or six cutting elements.

By means of a variation of the number of cutting elements, a variation of the cutting force in stages is preferably possible.

In particular, the cutting device can be individually adapted to particular requirements by means of a variable number of cutting elements.

The cutting elements are formed for example as a knife.

In particular, the cutting elements each have a cutting edge. The cutting edge of the respective cutting element has, in particular, a main extension direction, which is arranged at least approximately perpendicular to the cutting direction of the cutting device.

Preferably, the cutting device comprises a cutting element receptacle for receiving the cutting elements, in which the cutting elements are held. In particular, the cutting element receptacle is arranged adjacent to the longitudinal center axis of the main body of the cutting device.

The cutting element holder is in particular a knife holder.

It can be advantageous if the cutting element receptacle is arranged at least approximately centrally relative to the longitudinal central axis of the main body of the cutting device.

It can be provided that the cutting element holder holds the cutting elements substantially immovably and / or immovably with respect to a circumferential direction of the main body of the cutting device.

Preferably, the cutting device comprises a cutting element receptacle for the positive reception of the cutting elements.

It may be advantageous if the cutting elements of the longitudinal center axis of the main body facing the cutting device each having an end portion. In particular, the end section has one or more projections.

Preferably, the end portions have two projections. Main extension directions along which the two projections extend are, for example, arranged substantially parallel to the circumferential direction of the main body of the cutting device.

The end portions of the cutting elements are for example received in complementary to the end portions of the cutting elements formed grooves of the cutting element recording.

It may be favorable if, in the assembled state of the cutting device, the cutting elements undercut the cutting element receptacle in the circumferential direction of the main body of the cutting device.

It can be provided that the cutting elements are each held in the cutting element receptacle by means of a T-end section T-slot connection or a dovetail connection.

The cutting elements preferably each have an at least approximately T-shaped end section facing the longitudinal central axis of the main body. The at least approximately T-shaped end portion is held in particular in a direction parallel to the longitudinal center axis of the body extending complementarily shaped groove of the cutting element recording.

A transverse bar of the at least approximately T-shaped end section forms in particular a base, which is anchored, for example, in a groove of the cutting element holder.

Alternatively, it can be provided that the cutting elements each have an at least approximately dovetail-shaped end section on an end facing the longitudinal center axis. The at least approximately dovetailed end portion is held in particular in a direction parallel to the longitudinal center axis of the body extending complementarily shaped groove of the cutting element recording.

This preferably offers the advantage that the cutting elements are individually exchangeable.

For example, the end portion of the respective cutting element of the cutting elements for insertion and / or replacement in complementary to the end portion formed grooves of the cutting element recording along a sliding direction can be inserted or removed.

The sliding direction runs, for example, parallel to the longitudinal center axis of the main body of the cutting device.

Preferably, the sliding direction is opposite to or along the cutting direction.

In particular, one of the cutting elements is held in each case in a groove of the cutting element holder and / or inserted into a respective groove.

Alternatively, it can be provided that the cutting elements have at least approximately T-shaped or at least approximately dovetail-shaped grooves on an end facing the longitudinal central axis, in which complementary projections of the cutting element holder are held.

• - ein hohles Stützelement zum Abstützen der Schneidelemente; und/oder
• - ein Mittelelement zum Fixieren der Schneidelemente an dem Stützelement; und/oder
• - die Schneidelemente, welche in der Schneidelementaufnahme gehalten sind; und/oder
• - ein Abschlusselement, welches ein vorne liegendes Ende der Schneidvorrichtung bildet.

Preferably, viewed along the cutting direction of the cutting device, one or more of the following elements are arranged one behind the other:

• - A hollow support member for supporting the cutting elements; and or
• a central element for fixing the cutting elements to the support element; and or
• - The cutting elements, which are held in the cutting element recording; and or
• - A closure element, which forms a front end of the cutting device.

It can be provided that the middle element and the end element form components of a clamping device for clamping the cutting elements to the support element of the cutting device. In particular, the cutting elements are clamped by means of the clamping device to a cavity of the support element.

The support element is in particular cylindrical and preferably serves for supporting and / or supporting the cutting elements. For example, the support element facilitates the guidance of the cutting device along the cutting direction.

It can be provided that the support element forms part of a secondary energy absorption device, which serves to receive an additional amount of energy in addition to the amount of energy absorbed by the cutting.

The middle element is used in particular for fixing the cutting elements on a front edge region of the support element lying in front of the cutting direction. For example, the middle element forms a support surface on the edge region of the support element.

The closing element serves in particular for centering the cutting device along the cutting direction immediately before the cutting of the element to be cut.

The clamping device is used in particular for the clamping fixing of the cutting elements and / or partially in the support element.

It may be favorable if the middle element is sunk completely or partially in the cavity of the support element. In particular, the cutting elements are clamped with respect to the longitudinal central axis of the main body of the cutting device between the closing element and the central element.

It can be provided that the closing element and / or the central element limit a linear displaceability of the cutting elements along and / or opposite to the sliding direction parallel to the cutting direction of the cutting device.

The middle element is, for example, a middle plate. A main extension direction of the central element and / or the center plate is in particular arranged substantially perpendicular to the longitudinal central axis of the main body.

Preferably, the clamping device comprises a ring element and / or an intermediate element. The intermediate element is in particular surrounded by the ring element.

In particular, the ring element and / or the intermediate element is fixed on a side facing away from the end element of the central element between the central element and a clamping element of the clamping device of the cutting device.

It may be favorable if the clamping element and / or the ring element are arranged completely or partially within the cavity of the support element.

For example, the intermediate element and / or the ring element are clamped in the cavity of the support element.

It may be advantageous if the clamping device is completely or partially inserted into the support element and / or is guided by the support element.

By means of the clamping device, which is completely or partially countersunk in the support element, the cutting elements are preferably stabilized and / or fixed around the cutting direction of the cutting device.

Preferably, by means of the determination of the cutting elements on the support element by the clamping device necessary bending and supporting forces are ensured so that the cutting elements and the longitudinal central axis of the main body of the cutting device are arranged coaxially.

It can be provided that the intermediate element is designed as an additional cutting element holder and receives additional cutting elements.

Preferably, the cutting device comprises further, for example three, cutting element holders, in each of which two or more cutting elements are held.

For example, the cutting device has three or more variants of cutting element receptacles with different numbers of grooves for receiving the cutting elements, which can alternatively be used in the cutting device. The number of receivable and / or received cutting elements can thus be varied in particular between 3, 4, 5 or 6 cutting elements.

The ring element is preferably annular, in particular annular, formed.

It may be favorable if the ring element comprises or is formed from a plastic material. In particular, the ring element comprises polyurethane or is formed therefrom. For example, the ring element comprises polyurethane of the type 90A or is formed from it.

It can be provided that the ring element is a plastic ring and / or rubber ring which is inserted into a region of the support element.

The ring element is preferably compressed in the clamped state of the clamping device in the axial direction with respect to the longitudinal central axis of the base body and in particular expanded in the radial direction with respect to the longitudinal center axis of the base body.

The clamping element is in particular a clamping plate. A main extension direction of the clamping element and / or the clamping plate is arranged in particular substantially perpendicular to the longitudinal central axis of the base body.

In particular, the cutting elements held in the cutting element holder are screwed between the closure element and the center plate by means of a screw and a counterpart.

• - die Klemmplatte; und/oder
• - das Ringelement; und/oder
• - die Mittelplatte; und/oder
• - die Schneidelementaufnahme und die darin eingeschobenen Schneidelemente; und/oder
• - das Abschlusselement.

Preferably, a screw is made through openings provided in one or more of the following elements, and / or one or more of the following elements are arranged one behind the other as seen along the cutting direction:

• - the clamping plate; and or
• - the ring element; and or
• - the middle plate; and or
• - The cutting element holder and the cutting elements inserted therein; and or
• - the final element.

One or more of the elements listed above are preferably screwed by means of the screw, for example a clamping screw, and arranged on a side facing away from the end element of the clamping plate counterpart, such as a nut.

In a clamped state, the ring element is preferably held between the clamping plate and the middle plate and / or arched outwards.

As a result, in particular, a clamping action of a cutting part with respect to the front part and / or head part of the cutting device is achieved on the support element.

Preferably, the cutting device comprises a closing element at a front end with respect to a cutting direction. The closing element preferably has a shape tapering towards the front end of the cutting device. For example, the end element has an at least approximately conical shape or an at least approximately truncated pyramidal shape.

The closing element forms in particular the front of the cutting device with respect to the cutting direction.

In particular, the closing element is at least approximately frustoconical. For example, a top surface of the at least approximately frusto-conical end element forms an impact plate of the cutting device.

The impact plate forms in particular a front side of the cutting device and / or is pierced by an opening for receiving a screw. The opening is, for example, a countersunk screw.

For example, a height of the at least approximately frusto-conical end element is arranged substantially parallel to the longitudinal central axis of the cutting device.

It can be provided that the closing element is a cone, in particular a guide cone.

The support element is preferably arranged at a rear end of the cutting device with respect to the cutting direction and / or forms the rear end.

The support element is for example a hollow body which surrounds a cavity.

In particular, the support element is at least approximately hollow cylindrical or at least approximately hollow cuboid.

It may be favorable if the support element is pushed onto a holding element on a rear end with respect to the cutting direction of the cutting device. The holding element is preferably at least approximately cylindrical or at least approximately cuboid.

For example, the support element is fixed non-positively by means of the holding element to a holding device of the cutting device.

Additionally or alternatively, the support element is fixed by means of the holding element form-fitting manner on the holding device of the cutting device.

Additionally or alternatively, the support element by means of the retaining element is firmly bonded to the holding device of the cutting device.

For example, the holding device comprises a connection plate, on which a retaining element formed as a cylinder neck is fixed in a material-locking manner, for example by means of welding.

The support element is in particular pushed onto the retaining element configured as a cylinder neck and / or fixed in a rotationally fixed manner to the retaining element formed as a cylinder neck. For example, the support member is bolted to the formed as a cylinder neck holding element.

It may be favorable if the support element comprises an emergency tube and / or forms.

Preferably, a plurality of half-planes extend radially away from the longitudinal center axis of the main body. In particular, one of the cutting elements extends in each case along one of the several half-planes.

Preferably, the cutting elements each comprise two mutually opposite flanks, which are arranged symmetrically with respect to the respective half-plane. In particular, the two flanks each have an outer surface. The outer surfaces of the two flanks are in particular concave with respect to the respective half-plane formed.

"Concave" means in particular that the outer surfaces of the two mutually opposite flanks are curved inwardly towards the respective half-plane of the corresponding cutting element.

For example, the two flanks are arranged laterally on the respective cutting element.

The cutting elements preferably each have two bevelled sections of a cutting edge facing a front end with respect to a cutting direction of the cutting device. In particular, surfaces of the two chamfered portions enclose an acute angle with each other.

Preferably, the two chamfered portions of the cutting edge subtend an angle of about 40 ° or less, more preferably about 30 ° or less, for example, about 20 ° or less.

Preferably, the two beveled portions of the cutting edge subtend an angle of about 5 ° or more, more preferably about 10 ° or more, for example, about 15 ° or more.

It may be favorable if all cutting edges of the cutting elements are arranged at least approximately perpendicular to the longitudinal central axis of the main body of the cutting device.

The cutting edges form blades in particular.

The cutting edges of the cutting elements are in particular curved. In particular, the cutting edges of the cutting elements each taper from a radially outer edge of the respective cutting element to the longitudinal central axis of the main body of the cutting device along the cutting direction seen.

Preferably, the longitudinal center axis of the main body of the cutting device forms an axis of rotation of the cutting device.

It may be favorable if a longitudinal center plane of the main body of the cutting device, which runs through the longitudinal central axis of the main body of the cutting device, forms a mirror plane for the cutting elements.

The cutting elements preferably each have a radially outer edge with respect to the longitudinal center axis of the main body of the cutting device. The radially outer edge has, for example, an at least approximately arrow-shaped cross section. The cross-section is preferably taken perpendicular to the half-plane along which the respective cutting element extends.

The present invention further relates to an energy absorption device for absorbing energy.

Energy absorption devices are preferably used in test devices for crash tests.

The invention is in this respect the task of providing an energy absorption device, which allows a reliable and uniform energy absorption.

This object is achieved by an energy absorption device which comprises at least one cutting device according to the invention and at least one element to be cut, wherein the at least one cutting device and the at least one element to be cut are designed and arranged such that for absorbing the energy, the at least one to be cut Element can be cut by means of the at least one cutting device.

In particular, the energy absorption device has one or more of the features and / or advantages explained in connection with the cutting device.

Preferably, an end of the element to be cut with respect to the cutting direction in an assembled state of the energy absorbing device faces a front end of the cutting device with respect to the cutting direction.

In the mounted state of the energy absorption device, a front end of the element to be cut with respect to the cutting direction is averted, in particular, from a front end of the cutting device with respect to the cutting direction.

Preferably, the element of the energy absorbing device to be cut is sliced along the cutting direction.

Preferably, the energy absorbing device comprises a rail guided guide device, by means of which the cutting device and the element to be cut along a Guide axis are fed to each other. The guide axis is arranged in particular at least approximately parallel to the longitudinal central axis of the main body of the cutting device.

Preferably, the guide axis corresponds to the longitudinal central axis of the main body of the cutting device.

The guide axis is preferably parallel or identical to a longitudinal central axis of the element to be cut.

It can be provided that the guide device comprises a guide element, for example a guide plate, which minimizes or prevents contact between parts of the element to be cut in the cut state and rails of the guide device.

Preferably, a radial extent of the element to be cut away from the guide axis in regions in which one of the cutting elements acts is smaller than a radial extent of the cutting device away from the longitudinal central axis of the main body of the cutting device.

It may be advantageous if at least the radially outer edges of the cutting elements along the cutting direction project beyond the radial extent of the element to be cut away from the guide axis.

The radial extent of the cutting device away from the longitudinal center axis of the main body of the cutting device preferably corresponds to a radial distance between the longitudinal central axis of the main body of the cutting device and a radially outer edge of a cutting element of the cutting device with respect to the longitudinal central axis of the main body of the cutting device.

Preferably, the radial extent of the element to be cut away from the guide axis corresponds to a radius of the element to be cut in the region in which the element to be cut acts.

It may be favorable if an outer diameter of the element to be cut is smaller than a distance between the longitudinal central axis of the main body of the cutting device and the radial outer edge of one, in particular each, cutting element with respect to the longitudinal central axis.

Preferably, the cutting edges of all the cutting elements protrude outwardly beyond an outer diameter of the terminating element in a cross section taken perpendicular to the longitudinal central axis.

It can be provided that the cutting device comprises a secondary energy absorption device for absorbing an additional amount of energy.

The additional amount of energy is in particular beyond an amount of energy absorbed by the cutting of the element to be cut.

The secondary energy absorption device preferably comprises a foldable tube, which is arranged on an end of the cutting device which lies behind with respect to a cutting direction. The foldable tube is formed in particular by the support element and in particular has a hollow profile.

For example, in the case of an impact on the secondary energy absorption device, the foldable tube can be folded with an additional amount of energy along the cutting direction.

Preferably, the foldable tube is a thin-walled hollow body, which is deformed and / or deformed upon application of force along the cutting direction, in particular in the form of folds. The additional amount of energy is convertible especially in Faltenbeulenenergie. The Faltenbeulenenergie includes, for example, deformation energy and / or kinetic energy and / or heat energy.

So that the additional amount of energy can be absorbed by means of Faltenbeulung of the foldable tube, a fastening element of the cutting elements, for example, the clamping device, in particular fixed directly to the foldable tube.

For example, by means of a triggering of the secondary energy absorption device, in particular in the form of a chamfer, it is ensured that a fold bulge begins in a front region of the foldable tube and / or the support element with respect to the cutting direction.

For example, the support element, in particular in a front region with respect to the cutting direction, has a triggering in the form of a bevelled edge section.

Preferably, the element to be cut is made of a material having a lower hardness than a material from which the cutting elements are made.

Hardness is especially measured by Brinell, Martens, Rockwell, Vickers, Knoop, Shore, Barcol, Buchholz, Leeb or Mohs.

• EN ISO 6506-1 bis EN ISO 6506-4 .

For example, Brinell hardness is determined according to one or more of the following standards:

• EN ISO 6506-1 to EN ISO 6506-4 ,

Additionally or alternatively, a toughness of the cutting elements is selected so that a cutting process can take place without the cutting elements breaking brittle.

Preferably, the cutting device of the energy absorption device comprises a closing element, which is arranged in the cutting direction forward and has a tapering in the cutting direction shape. The closing element has, for example, an at least approximately conical or at least approximately truncated pyramidal shape.

In particular, the element of the energy absorption device to be cut comprises a catch element, which is arranged in the front in the cutting direction and is designed as a hollow body and / or complementary to the closing element of the cutting device. In particular, the cutting device can be centered by means of the closing element and / or the catching element along the cutting direction.

The catch element preferably forms a front with respect to the cutting direction end of the element to be cut. In particular, the catch element of the element to be cut is fixed to the further carriage element, for example the accelerated impactor carriage.

Preferably, the cutting device by means of Fangelements on the guide axis is centered.

In the case of an additional amount of energy, which exceeds the amount of energy that can be absorbed by cutting the element to be cut, the cutting device preferably strikes the catching element after a large part of the element to be cut has been cut.

By means of the centering of the cutting device along the guide axis, a controlled operation of a secondary absorption device is preferably realized, by means of which the additional amount of energy can be absorbed by Faltenbeulung.

It can be provided that the catching element comprises or forms a catching cone. For example, the catching element has a shape that tapers along the cutting direction.

In particular, the cutting device in the region of the closing element of the catching element of the element to be cut is receivable.

It can be provided that the element to be cut has an at least approximately constant wall thickness along the cutting direction.

Alternatively, the element to be cut has a varying wall thickness along the cutting direction.

It may be provided that a force profile of a cutting force along a cutting path through the element to be cut along the cutting direction by means of a variation of a wall thickness of the element to be cut is variable. For example, the force curve is flexibly adaptable and / or adjustable by means of the variation of the wall thickness of the element to be cut.

In particular, an outer contour of the wall of the element to be cut along the cutting direction is qualitatively imaged and / or imaged in a plot of the cutting force as a function of the cutting path.

Preferably, a waveform of the application of the cutting power depending on the cutting path qualitatively corresponds to the variation of the wall thickness of the element to be cut along the cutting path along the cutting direction.

By means of the variation of the wall thickness of the wall of the element to be cut in particular acceleration curves can be readjusted in crash tests. For example, acceleration pulses which act on mechanisms of a vehicle component, for example a vehicle door, can be represented and / or represented in acceleration curves.

It may be beneficial if the cutting device is introduced along the cutting direction in the element to be cut and the element to be cut is thereby cut by means of the cutting elements of the cutting device.

By means of the cutting of the element to be cut, in particular in a crash resulting energy can be reproduced and at be absorbed at least approximately constant course of force.

• - Verzögern eines Schlittenelements relativ zu einem weiteren Schlittenelement mittels einer erfindungsgemäßen Energieabsorptionsvorrichtung.

The invention further relates to a method for operating an energy absorption device, the method comprising:

• Delaying a carriage element relative to another carriage element by means of an energy absorption device according to the invention.

In particular, the method has one or more of the features and / or advantages mentioned in connection with the cutting device and / or the energy absorption device.

Further features and advantages of the invention are the subject of the following description and the diagrammatic representation of a preferred embodiment.

• 1: eine perspektivische Darstellung einer Schneidvorrichtung einer Energieabsorptionsvorrichtung, wobei die Schneidvorrichtung sechs Schneidelemente umfasst, welche von einem Grundkörper der Schneidvorrichtung nach außen weg ragen;
• 2: eine schematische Draufsicht der Schneidvorrichtung aus 1;
• 3: eine vergrößerte Darstellung des mit III gekennzeichneten Bereichs aus 2;
• 4: einen schematischen Querschnitt durch die Schneidvorrichtung aus 1 im Bereich der Schneidelemente;
• 5: einen schematischen Längsschnitt durch die Schneidvorrichtung aus 1, wobei zusätzlich ein zu zerschneidendes Element der Energieabsorptionsvorrichtung im Längsschnitt zu sehen ist; und
• 6 bis 8: unterschiedliche Varianten von Wänden eines zu zerschneidenden Elements und dazugehörige Diagramme, in welchen eine Zerschneidekraft abhängig von einem Zerschneideweg aufgetragen ist.

In the drawings show:

• 1 Fig. 3 is a perspective view of a cutting device of an energy absorbing device, the cutting device comprising six cutting elements projecting outwardly from a main body of the cutting device;
• 2 : a schematic plan view of the cutting device 1 ;
• 3 : an enlarged view of the area marked III 2 ;
• 4 : a schematic cross section through the cutting device 1 in the area of the cutting elements;
• 5 : a schematic longitudinal section through the cutting device 1 in addition, a section of the energy absorbing device to be cut is to be seen in longitudinal section; and
• 6 to 8th different variants of walls of an element to be cut and associated diagrams in which a cutting force is applied depending on a Zerschneideweg.

Identical or functionally equivalent elements are provided with the same reference numerals in all figures.

One in the 1 to 5 illustrated cutting device 102 one as a whole with 100 designated energy absorption device comprises a main body 104 , which is preferably at least approximately cylindrical, in particular at least approximately circular cylindrical, is formed.

The cutting device 102 preferably extends from one with respect to a cutting direction 106 front end 108 with respect to the cutting direction 106 rear end 110 ,

As in particular in 1 and 5 can be seen, includes the cutting device 102 at the front end 108 preferably a closing element 112 , The final element 112 is preferably at least approximately conical and / or tapers along the cutting direction 106 ,

Preferably, a ratio of a radius r ₁ a top surface 114 of the conclusion element 112 to a radius r ₂ a base area 116 of the conclusion element 112 1 : 10 or more, especially 3:10 or more, for example 4:10 or more (cf. 2 ).

It may be favorable if a ratio of the radius r ₁ the top surface 114 of the conclusion element 112 to the radius r ₂ the base area 116 of the conclusion element 112 9 : 10 or less, especially 7:10 or less, for example 6:10 or less.

It can be provided that the closing element 112 a Leitkonus 113 forms. By means of the guide cone 113 is particularly in a mounted state and in operation of the energy absorption device 100 an element to be cut 115 on a tapered area 117 the Leitkonus 113 around a longitudinal central axis 120 of the basic body 104 the cutting device 102 alignable and / or aligned.

In case of a large ratio of r ₁ : r ₂ , for example, 1: 2 or more, is preferably a guide at the tapered portion 117 of the element to be cut 115 maximized.

In particular, in the case of a small ratio of r ₁ : r ₂ , for example, less than 1: 2, a guide at the tapered area 117 of the element to be cut 115 minimized.

It can be provided that the top surface 114 an impact plate 118 forms. Preferably, the impact plate forms 118 a respect to the cutting direction 106 furthest forward section of the cutting device 102 ,

For example, the terminating element 112 in the region of the longitudinal central axis 120 the cutting device 102 an opening 122 , in particular in the form of a countersunk screw, for receiving a fastening element, by means of which the closing element 112 on a support element 124 the cutting device 102 fixed and / or fixed.

It may be favorable if the opening 122 the impact plate 118 breaks through and / or the opening 122 is closed by the fastener, such as a screw.

The cutting device 102 preferably comprises a cutting element holder 126 which are opposite to the cutting direction 106 seen, in particular directly, to the final element 112 borders.

The cutting element holder 126 is preferably a knife holder.

The cutting element holder 126 is preferably at least approximately cylindrical, in particular at least approximately circular cylindrical, formed.

The cutting device 102 preferably comprises two or more cutting elements 130 , which in provided for recesses in the cutting element holder 126 are included. For example, the cutting device comprises 102 six cutting elements 130 ,

It may be favorable if the cutting elements 130 in parallel to the cutting direction 106 extending grooves 128 the cutting element holder 126 are recorded positively.

In particular, in the mounted state of the cutting device 102 with respect to the cutting direction 106 seen front portion of the cutting elements 130 at the base 116 of the conclusion element 112 at. In particular, there is, for example, direct, material contact between the cutting elements 130 and the base area 116 of the conclusion element 112 ,

A regarding the cutting direction 106 Rear area of the cutting elements 130 preferably adjoins a central element 132 at. In particular, there is, for example, direct, material contact between the cutting elements 130 and the middle element 132 ,

The middle element 132 is especially as a center plate 134 trained and / or limited together with the final element 112 in the assembled state of the cutting device 102 a movement of the cutting elements 130 along and / or opposite to the cutting direction 106 ,

Preferably, the middle element is adjacent 132 opposite to the cutting direction 106 seen, in particular directly, to the support element 124 the cutting device 102 at. In particular, the middle element lies 132 on an edge of the support element 124 which is the front end 108 the cutting device 102 facing, and / or is clamped to it.

The support element 124 is preferably designed as a hollow body, for example as a hollow cylinder.

The back end 110 the cutting device 102 faces facing the support element 124 preferably an opening 136 for fixing to a holding element 138 the cutting device 102 on.

For example, the support element 124 by M8er screws on a designed as a cylinder neck holding element 138 screwed.

In one of the formed as a hollow body support element 124 formed cavity 137 is in particular a clamping device 140 clamped down (cf. 5 ).

Preferably, by means of the clamping device 140 , which in particular a part of the cutting device 102 forms, the cutting elements 130 on the support element 124 established.

The clamping device 140 preferably comprises the closing element 112 and the middle element 132 , In particular, the clamping device comprises 140 a ring element 142 the cutting device 102 and / or an intermediate element 144 the cutting device 102 ,

Preferably as a center plate 134 trained middle element 132 is with respect to its main extension direction in particular substantially perpendicular to the longitudinal central axis 120 of the basic body 104 the cutting device 102 oriented.

For example, the middle plate forms 134 a support surface for supporting the cutting elements 130 and / or the cutting element holder 126 on the support element 124 , In particular, by means of the middle plate 134 a clamping force and / or clamping force when clamping the cutting elements 130 acts, evenly distributable.

It may be favorable if the ring element 142 and / or the intermediate element 144 and / or the support element 124 are formed substantially coaxially.

Preferably, the ring element lie 142 and / or the intermediate element 144 and / or the support element 124 in a cross section concentric, in particular. The cross section is for example perpendicular to the longitudinal central axis 120 the cutting device 102 taken.

The ring element 142 is preferably a piece of pipe which fits into the at least approximately hollow cylindrical support element 124 is inserted.

It may be favorable if one within the ring element 142 formed volume completely or partially from the intermediate element 144 is filled.

It may be provided that the ring element 142 is designed as a ring. Preferably, the ring element comprises 142 a plastic material or is formed from it.

For example, the ring element 142 as a plastic ring of polyurethane, in particular polyurethane of the type 90A , educated.

It can be provided that the ring element 142 a rubber ring is.

It may be advantageous if the intermediate element 144 at least approximately disc-shaped and / or at least approximately cylindrical.

In particular, the intermediate element 144 along a circumferential direction 146 the cutting device 102 completely or partially from an inner side of the at least approximately annular ring element 142 enclosed.

An extension of the intermediate element 144 in cutting direction 106 is preferably less than or equal to an extension of the ring element 142 in cutting direction 106 ,

It may be favorable if the expansion of the intermediate element 144 in cutting direction 106 an extension of the cutting element holder 126 essentially corresponds.

It can be provided that the intermediate element 144 as another cutting element holder 126 for receiving further cutting elements 130 serves (not shown).

It may be favorable if the ring element 142 and / or the intermediate element 144 at least approximately flush with a front end 108 facing edge of the support element 124 complete and / or form a common termination edge.

This is preferably in particular as a middle plate 134 trained middle element 132 on the terminal edge and / or is by means of the clamping device 140 clamped on the terminal edge.

The clamping device 140 preferably comprises a clamping element 148 , which in particular as a clamping plate 150 is trained.

A main extension direction of the clamping plate 150 is preferably at least approximately perpendicular to the cutting direction 106 arranged.

Preferably, the ring element 142 and / or the intermediate element 144 regarding the cutting direction 106 between the middle element 132 and the clamping element 148 established.

For example, the final element 112 , the cutting element holder 126 , the middle plate 134 , the intermediate element 144 and / or the clamping plate 150 by means of a screw which is opposite to the cutting direction 106 is performed by the elements, and a counterpart on a rear end 110 facing side of the clamping plate 150 screwed. The counterpart is, for example, a mother.

It can be provided that by means of the ring element 142 the middle plate 134 and the clamping plate 150 regarding the cutting direction 106 are kept at a distance. In one by means of the ring element 142 formed distance between the middle plate 134 and the clamping plate 150 is preferably the intermediate element 144 arranged.

In a clamped state of the clamping device 140 is the ring element 142 preferably arched outward and / or tension between the central element 132 and the clamping element 148 held.

Preferably, the ring element 142 in the clamped state along the longitudinal central axis 120 compressed and / or deformed.

This jams a headboard 152 the cutting device preferably in the support element 124 ,

Preferably, it clamps by means of a compression of the ring element 142 in the axial direction with respect to the longitudinal central axis 120 and / or an expansion of the ring element 142 in the radial direction with respect to the longitudinal central axis 120 the headboard 152 the cutting device 102 in the support element 124 ,

A clamping action is in particular by the pinching of the ring element 142 between the middle plate 134 and the clamping plate 150 achieved.

It may be favorable if the cutting device 102 the headboard 152 and a recording part 154 includes. The headboard 152 is preferably outside of the support element 124 formed cavity 137 arranged. The recording part 154 is especially within the of the support element 124 formed cavity 137 arranged.

• - das Abschlusselement 112; und/oder
• - die Schneidelementaufnahme 126; und/oder
• - die Schneidelemente 130; und/oder
• - das Mittelelement 132.

The headboard 152 preferably comprises one or more of the following elements:

• - the final element 112 ; and or
• - The cutting element holder 126 ; and or
• - The cutting elements 130 ; and or
• - the middle element 132 ,

• - das Ringelement 142; und/oder
• - das Zwischenelement 144; und/oder
• - das Klemmelement 148.

The recording part 154 preferably comprises one or more of the following elements:

• - the ring element 142 ; and or
• - the intermediate element 144 ; and or
• - The clamping element 148 ,

The headboard 152 is preferably by means of the receiving part 154 on the support element 124 the cutting device 102 established.

In particular, the receiving part 154 in the support element 124 pushed in and / or holds the headboard 152 opposite to the cutting direction 106 essentially immovable.

The headboard 152 sits in particular along the cutting direction 106 seen on the support element 124 on. Preferably by means of the support element 124 recorded recording part 154 a bending force and / or a supporting force given to a longitudinal central axis of the head part 152 essentially along the longitudinal central axis 120 the cutting device 102 to keep.

By means of the in the support element 124 inserted and / or clamped clamping device 140 is preferably given a support force which the head part 152 on the longitudinal central axis 120 of the basic body 104 essentially centered.

Preferably, by means of the insertion and / or clamping of the head part 152 in the support element 124 a bending force reduced so far that the headboard 152 essentially on the longitudinal central axis 120 of the basic body 104 the cutting device 102 is aligned.

As in particular in 4 can be seen, are the cutting elements 130 in particular positive and / or non-positive of the cutting element recording 126 added. It may be advantageous if the cutting elements 130 one end section each 156 which has the longitudinal central axis 120 is facing.

The end sections 156 preferably have an at least approximately T-shaped cross-section. The cross section is in particular perpendicular to the longitudinal central axis 120 of the basic body 104 the cutting device 102 taken.

Preferably, two transverse bars of the at least approximately T-shaped end portion 156 of protrusions 158 formed, which is at least approximately parallel to the circumferential direction 146 and / or parallel to the longitudinal central axis 120 the cutting device 102 extend.

Preferably, the cutting elements 130 in the assembled state of the cutting device 102 along a sliding direction 160 in grooves 128 the cutting element holder 126 inserted.

The grooves 128 are in particular complementary to the end sections 156 the cutting elements 130 educated. In particular, a movement of the cutting elements 130 in the circumferential direction 146 of the basic body 104 the cutting device 102 partially or completely prevented.

The sliding direction 160 is preferably at least approximately parallel to the longitudinal central axis 120 of the basic body 104 the cutting device 102 ,

It may be favorable if a movement of the cutting elements 130 along the sliding direction 160 in the assembled state of the cutting device 102 by means of the end element 112 and the middle element 132 , in particular completely, is blocked.

It can be provided that an extension of the two projections 158 a cutting element 130 in the circumferential direction 146 the cutting device 102 in each case 1:10 or more, in particular 2:10 or more, for example 3:10 or more, one with respect to the longitudinal central axis 120 radial expansion of the respective cutting element 130 is.

It can be provided that an extension of the two projections 158 a cutting element 130 in the circumferential direction 146 the cutting device 102 in each case 9:10 or less, in particular 8:10 or less, for example 7:10 or less, one with respect to the longitudinal central axis 120 radial expansion of the respective cutting element 130 is.

As in particular in the 2 and 3 can be seen, the cutting elements protrude 130 over an outer radius of the end element 112 , in particular over the radius r ₂ the base area 116 , outward from the longitudinal central axis 120 the cutting device 102 path.

Preferably, a radial extent 162 the cutting device 102 in the field of cutting elements 130 from the longitudinal central axis 120 away bigger than the radius r ₂ the base area 116 of the conclusion element 112 ,

The radial extent 162 corresponds in particular to a distance of the longitudinal central axis 120 and one with respect to the longitudinal central axis 120 the cutting device 102 radially outer edge 164 a cutting element 130 ,

Main directions of extension of the outer edges 164 preferably run substantially parallel to the circumferential direction 146 the cutting device 102 ,

It may be favorable if the cutting elements 130 two flanks each 166 each having from the outer edge 164 of the respective cutting element 130 to the main body 104 the cutting device 102 fall off curved.

The flanks 166 of the respective cutting element 130 are preferably symmetrical with respect to a half plane 170 arranged along which the respective cutting element 130 extends.

The half-levels 170 preferably extend radially from the longitudinal central axis 120 of the basic body 104 the cutting device 102 path.

The flanks 166 are preferably with respect to the respective half-plane 170 arranged symmetrically to each other. In particular, the flanks 166 a cutting element 130 mirror-symmetric with respect to the respective half-plane 170 arranged.

It may be beneficial if surfaces 168 the flanks 166 the cutting elements 130 concave with respect to the respective half-plane 170 are arranged.

In a front end 108 the cutting device 102 facing area, the cutting elements 130 preferably bevelled sections 172 on.

Preferably, each forms a beveled section 172 a recess in a flank 166 a cutting element 130 ,

For example, the two bevelled sections run 172 a cutting element 130 along the cutting direction 106 , in particular curved, towards each other.

The two beveled sections 172 a cutting element 130 in particular close a cutting edge 174 of the cutting element 130 one another.

It can be provided that the cutting device 102 with respect to their longitudinal central axis 120 is formed rotationally symmetrical.

Preferably, the outer edge 164 in a plan view of a cutting element 130 an at least approximately arrow-shaped cross section (see. 1 ).

The two beveled sections 172 a cutting element 130 preferably include an acute angle of 80 ° or less, more preferably 60 ° or less, for example, 40 ° or less, with each other.

The two beveled sections 172 a cutting element 130 preferably include an acute angle of 5 ° or more, more preferably 10 ° or more, for example 15 ° or more, with each other.

Preferably, the cutting edge 174 formed curved.

By means of the cutting device 102 is in particular an element to be cut 115 zerschneidbar.

In operation of the energy absorption device 100 penetrate the elements to be cut 130 the cutting device 102 along the cutting direction 106 into the element to be cut 115 and cut the element to be cut 115 by converting an energy produced by an impact into cutting energy.

As in particular in 5 can be seen, has the element to be cut 115 preferably an at least approximately hollow cylindrical shape.

The element to be cut 115 preferably extends from one with respect to the cutting direction 106 front end 180 with respect to the cutting direction 106 rear end 178 ,

For example, in an assembled state, the energy absorbing device 100 the back end 178 of the element to be cut 115 the front end 108 the cutting device 102 arranged facing.

The element to be cut 115 preferably comprises and / or is formed from a metallic material. For example, the element to be cut comprises 115 one or more of the following materials: stainless steel, sheet metal and / or aluminum.

The element to be cut 115 is preferably made of a material having a lower hardness than a material from which the cutting elements 130 the cutting device 102 are made.

The material of the cutting elements 130 is preferably chosen with respect to its toughness so that a brittle breaking of the cutting elements 130 the cutting device 102 when cutting the element to be cut 115 is prevented.

A longitudinal central axis of the element to be cut 115 and the longitudinal center axis 120 the cutting device 102 are preferably identical.

It may be favorable if a radial extent 182 of the element to be cut 115 from the guide axis 184 away in areas where the cutting elements 130 cut, smaller than the radial extent 162 the cutting device 102 from the longitudinal central axis 120 path.

The extension 182 of the element to be cut 115 is, for example, an outer radius of the element to be cut 115 ,

It may be favorable if the element to be cut 115 is fixed to a first guide element, for example a slide element. The element to be cut 115 is in particular along a guide axis 184 on the cutting device 102 fed.

It can be provided that two elements to be cut 115 are fixed to a carriage element, for example an accelerated impactor carriage, and / or that two cutting devices 102 on a carriage element, for example one along the guide axis 184 essentially static floor sled.

Preferably, the two elements to be cut are 115 by means of the impactor slide on rails on the two cutting devices 102 fed.

In particular, by means of the use of two energy absorption devices 100 realized a symmetrical energy absorption.

Preferably, the guide axis 184 substantially parallel to the longitudinal central axis 120 and / or the cutting direction 106 ,

The element to be cut 115 includes at its forward end 180 in particular a catch element 186 ,

Preferably, the catch element forms 186 the front end 180 which is in an operation of the energy absorption device 100 first on the cutting device 102 meets when much of the element to be cut 115 was cut.

It may be favorable if the catch element 186 one opposite to the cutting direction 106 has tapering shape and / or at least approximately conical.

It can be provided that the catch element 186 as a fishing cone 187 is trained.

The catch element is used in particular for centering the cutting device 102 after the element to be cut 115 until the catch element 186 from the cutting device 102 was cut.

In the case that the longitudinal central axis 120 the cutting device 102 not essentially on the guide axis 184 is, is the cutting device 102 by means of the fishing cone 187 on the guide axis 184 aligned. This offers the particular advantage that an energy absorption of an additional amount of energy in the form of Faltenbeulung is receivable. In an energy absorption by means of Faltenbulung is an orientation of the cutting device 102 Of particular importance, so that the large forces acting are controlled ingestible.

By means of the centering of the cutting device 102 is preferably the absorption of an additional amount of energy by a secondary absorption device 190 in controlled form possible.

By means of the catchment 186 and / or the conclusion element 112 the cutting device 102 is the cutting device 102 in particular along the cutting direction 106 centered.

The catch element 186 is in particular at least partially complementary to the final element 112 the cutting device 102 educated.

By means of the cutting elements 130 , in particular their cutting edges 174 , becomes the element to be cut 115 preferably cut into strips whose width is at least approximately a distance of the cutting elements 130 in the circumferential direction 146 the cutting device 102 equivalent.

In operation of the energy absorption device 100 is the element to be cut 115 preferably along the guide axis 184 on the cutting device 102 moved toward.

The cutting device 102 is in particular by means of an at least approximately cylindrical retaining element 138 a holding device 188 on a guide element, such as a carriage element, can be fixed and / or fixed.

The holding element 138 is especially at the back end 110 the cutting device 102 in the support element 124 pushed in and on a connection plate of the holding device 188 established.

It may be favorable if the retaining element 138 on the one hand on the support element 124 the cutting device 102 and on the other hand to a connection plate of the holding device 188 is fixed.

The connection plate of the holding device 188 forms, for example, a part of a carriage element on which the cutting device 102 is fixed.

In particular, the connection plate comprises a guide element, for example a guide plate, which makes contact between strips of the element to be cut 115 after cutting and rails on which the carriage elements are guided prevents or minimizes.

Preferably, the element to be cut is 115 via a connection plate on a carriage element, for example an impactor carriage.

The carriage elements, by means of which the element to be cut 115 on the cutting device 102 can be fed, preferably form components of a guide device 183 for guiding the cutting device 102 and the element to be cut 115 ,

By cutting the element to be cut 115 In particular, an amount of energy generated and / or generated in the event of a crash is converted into kinetic energy and / or friction energy and / or heat energy and / or deformation energy and in particular absorbed.

It may be favorable if the cutting device 102 a secondary energy absorption device 190 comprising, in the case of an additional amount of energy, the one by means of the cutting of the element to be cut 115 absorbed amount of energy that absorbs additional amount of energy.

The secondary energy absorption device 190 preferably comprises a foldable tube 192 which, in the event of exposure to the energy absorption device 100 with an additional amount of energy along the cutting direction 106 is foldable.

It may be favorable if the secondary absorption device 190 by means of a trigger in the form of a chamfer on the foldable tube 192 is specifically manipulated so that in particular a Faltenbeulung in respect of the cutting direction 106 front area of the foldable tube 192 and / or the support element 124 starts.

The wrinkle bulge begins in the cutting direction 106 for example, in a region between the holding element 138 and the clamping element 138 of the foldable tube 192 and / or the support element 124 ,

It can be provided that the secondary energy absorption device 190 the support element 124 comprises or is formed from. For example, form the foldable tube 192 and / or the support element 124 an emergency tube.

It may be favorable if the additional amount of energy from the secondary energy absorption device 190 by means of substantially regular fold buckling in the foldable tube 192 is recorded and / or is recordable.

In embodiments without a secondary energy absorption device 190 can the support element 124 preferably by means of pressing or screwing on the holding element 138 be set.

The cutting elements 130 the cutting device 102 are in particular in several Crahstests and / or applications of the energy absorption device 100 reusable.

As in particular in the in 6 to 8th shown diagrams is by means of a variation of a wall thickness 200 of the element to be cut 115 an adaptation of a force curve possible.

In the 6 to 8th qualitative diagrams are shown, which each have an abscissa 194 and an ordinate 196 exhibit.

On the abscissa 194 each is a cutting path s through a wall 198 of the element to be cut 115 specified. On the ordinate 196 is a cutting force F depending on the cutting path s applied.

Above the diagram is in each case schematically the associated wall 198 of the element to be cut 115 shown, wherein a variation of the wall thickness 200 you can see.

The cutting power F is preferably the force along the cutting direction 106 on the cutting path s must be applied to the element to be cut 115 by means of the cutting elements 130 the cutting device 102 to cut up.

6 shows a diagram of the force curve of the cutting force F when cutting a piece to be cut 115 , which has a constant wall thickness 200 along the cutting path s having.

7 a diagram of the force curve of the cutting force F when cutting a piece to be cut 115 , which is a uniformly increasing wall thickness 200 along the cutting path s having.

8th shows a diagram of the force curve of the cutting force F when cutting a piece to be cut 115 which has an irregular wall thickness 200 along the cutting path s having.

The diagrams of 6 to 8th show that preferably the force curve of the cutting force F qualitatively the course of the wall thickness 200 along the cutting path s equivalent.

As in the diagrams of 6 to 8th is seen in particular by means of a variation of the wall thickness 200 of the element to be cut 115 a continuous force course adaptation possible.

Preferably, a variation of a force level in stages is by means of a variation of the number of cutting elements 130 possible.

Preferably, by means of several energy absorption devices 100 For example, two energy absorption devices 100 , a stabilization of the crash tests can be realized.

Preferably, by means of the cutting of the element to be cut 115 through the cutting elements 130 the cutting device 102 a reproducible conversion of impact energy into cutting energy can be realized with an at least approximately constant force curve.

Preferably, in cutting elements 130 With curved geometry a lesser influence of the speed on the force curve can be measured, especially in comparison with cutting elements 130 with a straight cross section.

LIST OF REFERENCE NUMBERS

100

The energy absorbing device

102

cutter

104

body

106

Zerschneiderichtung

108

front end

110

rear end

112

termination element

113

guide cone

114

cover surface

115

to be cut element

116

Floor space

117

rejuvenating area

118

impact plate

120

Longitudinal central axis

122

opening

124

support element

126

Cutting element receptacle

128

groove

130

cutting element

132

middle element

134

center plate

136

opening

137

cavity

138

retaining element

140

clamping device

142

ring element

144

intermediate element

146

circumferentially

148

clamping element

150

clamp

152

headboard

154

receiving part

156

end

158

head Start

160

sliding direction

162

extension

164

outer edge

166

flank

168

surface

170

Half-level

172

bevelled section

174

cutting edge

178

rear end

180

front end

182

extension

183

guiding device

184

guide axis

186

catching element

187

Collecting cone

188

holder

190

Secondary energy absorption device

192

foldable tube

194

abscissa

196

ordinate

198

wall

200

Wall thickness

r ₁

Radius of the top surface

r ₂

Radius of the base area

s

Zerschneideweg

F

Zerschneidekraft

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 non-patent literature

• EN ISO 6506-1 [0139]
• EN ISO 6506-4 [0139]

Claims (15)

A cutting device (102) for an energy absorbing device (100), the cutting device (102) comprising: - A base body (104) having a longitudinal central axis (120) which is parallel to a cutting direction (106) of the cutting device (102); and - Two or more cutting elements (130) for cutting a to-be-cut element (115), wherein the two or more cutting elements (130) extending outwardly from the longitudinal central axis (120) of the base body (104). Cutting device (102) after Claim 1 , characterized in that the cutting device (102) comprises a cutting element receptacle (126) for the positive reception of the two or more cutting elements (130). Cutting device (102) after Claim 1 or 2 characterized in that one or more of the following elements are arranged one behind the other along the cutting direction (106) of the cutting device (102): - a hollow support element (124) for supporting the two or more cutting elements (130); and / or - a central member (132) for fixing the two or more cutting elements (130) to the support member (124); and / or the two or more cutting elements (130) held in a cutting element receptacle (126); and / or a termination member (112) forming a forward end (108) of the cutting device (102), the center member (132) and the termination member (112) being integral with a clamping device (140) for clamping the two or the first a plurality of cutting elements (130) on the support element (102) of the cutting device (102) and wherein the two or more cutting elements (130) by means of the clamping device (140) are clamped to the support member (124). Cutting device (102) after Claim 3 , characterized in that the clamping device (140) comprises a ring element (142) and / or an intermediate element (144), wherein the intermediate element (144) is surrounded by the ring element (142), wherein the ring element (142) and / or the Intermediate element (144) on a side facing away from the end element (112) of the central element (132) between the central element (132) and a clamping element (148) of the clamping device (140) of the cutting device (102) are fixed and preferably wherein the clamping element (148) and / or the ring member (142) are clamped in a cavity (137) of the support member (124). Cutting device (102) according to one of Claims 1 to 4 characterized in that the cutting device (102) comprises a termination member (112) at a forward end (108) relative to the cutting direction (106), the termination member (112) extending towards the forward end (108) of the cutting device (102 ) has a tapered shape, in particular an at least approximately conical or an at least approximately truncated pyramidal shape. Cutting device (102) according to one of Claims 1 to 5 , characterized in that extending radially from the longitudinal central axis (120) of the base body (104) of the cutting device (102) away a plurality of half-planes (170), each along one of the plurality of half-planes (170) one of the two or the plurality of cutting elements (130), the two or more cutting elements (130) each including two opposing flanks (166) which are symmetrically disposed with respect to the respective half-plane (170) and wherein the two flanks (166) each having an outer surface (168), which is preferably concave with respect to the respective half-plane (170) is formed. Cutting device (102) according to one of Claims 1 to 6 characterized in that the two or more cutting elements (130) each have two bevelled portions (172) of a cutting edge (174) facing a front end (108) with respect to the cutting direction (106) of the cutting device (102) two beveled portions (172) enclose an acute angle with each other. Cutting device (102) according to one of Claims 1 to 7 , characterized in that the two or more cutting elements (130) each have a relative to the longitudinal center axis (120) of the base body (104) of the cutting device (102) radially outer edge (164) which has an at least approximately arrow-shaped cross-section. An energy absorption device (100) for absorbing energy, comprising at least one cutting device (102) according to any one of Claims 1 to 8th and at least one element (115) to be cut, wherein the at least one cutting device (102) and the at least one element (115) to be cut are designed and arranged in such a way that, for absorbing the energy, the at least one element (115) to be cut by means of at least one cutting device (102) can be cut. Energy absorption device (100) after Claim 9 , characterized in that the energy absorption device (100) comprises a rail guided guide device (183), by means of which the cutting device (102) and the element to be cut (115) along a guide axis (184) are fed to each other, wherein the guide axis (184 ) runs at least approximately parallel to the longitudinal central axis (120) of the main body (104) of the cutting device (102). Energy absorption device (100) after Claim 9 or 10 , characterized in that a radial extent (182) of the element (115) to be cut away from a guide axis (184) in areas in which one of the two or more cutting elements (130) engages is smaller than a radial extent (162 ) of the cutting device (102) away from the longitudinal central axis (120) of the main body (104) of the cutting device (102). Energy absorption device (100) according to one of Claims 9 to 11 characterized in that the cutting device (102) comprises a secondary energy absorption device (190) for absorbing an additional amount of energy, the secondary energy absorption device (190) comprising a foldable tube (192) disposed at a rear relative to a cutting direction (106) the foldable tube (192) is formed in particular by the support element (124), wherein the foldable tube (192) has in particular a hollow profile and wherein the foldable tube (192) in Case of an impact of the energy absorbing device (100) with an additional amount of energy along the cutting direction (106) is foldable. Energy absorption device (100) according to one of Claims 9 to 12 , characterized in that the cutting device (102) comprises a closing element (112), which is arranged in the cutting direction (106) front and a in the cutting direction (112) tapered shape, in particular an at least approximately conical or at least approximately truncated pyramidal shape wherein the element (115) to be cut comprises a catching element (186) disposed in the cutting direction (106) at the front and formed as a hollow body and / or complementary to the closing element (112) of the cutting device (102) and wherein by means of the closing element (112) and / or the catching element (186), the cutting device (102) along the cutting direction (106) is centered. Energy absorption device (100) according to one of Claims 9 to 13 , characterized in that the element (115) to be cut along the cutting direction (106) has a varying wall thickness (200). A method of operating an energy absorbing device (100), the method comprising: - delaying a carriage member relative to another carriage member by means of an energy absorbing device (100) according to any one of Claims 9 to 14 ,

Images