DE102019005923A1 - One-piece motor vehicle coupling rod - Google Patents

Abstract

The invention relates to a method for producing a coupling rod (100) for a chassis for a motor vehicle, preferably in order to form a one-piece coupling rod (100) formed from a single basic component (10), with the following steps: Providing (S1) a basic component (10) with a first end section (E1) and a second end section (E2), preferably a semi-finished product, trimming (S2) of the basic component (10) and reshaping (S3.1, S3.2, S3.3) of the basic component (10).

Description

The invention relates to a method for producing a coupling rod for a chassis of a motor vehicle, preferably a utility vehicle.

Due to their relatively high center of gravity compared to the roll center, motor vehicles have the property of building up relatively high roll angles when cornering, which is also associated with an undesirable relief of the inner wheels of the curve. To counteract this effect, coupling rods (e.g. stabilizer supports) comprehensive stabilizer devices are usually used in chassis, whereby the roll angle in particular can be reduced and part of the wheel load can be shifted from the outside wheel to the inside wheel. In the case of commercial vehicles such as trucks or buses, due to the very high center of gravity and the mostly small spring track (e.g. twin tires), a particularly high level of stabilization is required with appropriately dimensioned components. In the prior art, coupling rods are known in the most varied of embodiments. It is usual here that several components are joined together in order to form the coupling rods, so that the coupling rods are composed of several components.

One object of the invention is to create an improved and / or alternative method for producing a coupling rod for a chassis of a motor vehicle.

This problem can be solved with the features of the main claim. Advantageous further developments are disclosed in the subclaims or result from the following description of preferred embodiments of the invention.

The invention relates to a method for producing a coupling rod, in particular a stabilizer support, for a chassis for a motor vehicle, e.g. B. to form a preferably one-piece and / or formed from a single basic component coupling rod.

The motor vehicle is preferably a utility vehicle, e.g. B. a truck or a bus.

The method comprises the steps of providing a basic component (e.g. a semi-finished product, in particular a hollow profile semi-finished product), preferably with a first end section and a second end section, trimming the basic component, and reshaping (e.g. bending, twisting) and / or pressing) the basic component.

The trimming can e.g. B. be carried out to preferably produce an incision (z. B. a recess) in the basic component.

The incision can expediently create a weak point in the basic component and / or create space to facilitate or enable subsequent reshaping, in particular twisting, bending and / or pressing.

The reshaping (e.g. bending and / or twisting) is preferably carried out around the incision and thus in particular around the weak point.

The incision can preferably be formed between the first end portion and the second end portion.

The first end section is preferably used to form an assembly structure that includes, in particular, at least one assembly opening and / or the second end section is preferably used to form an assembly structure that includes, in particular, at least one assembly opening.

The method enables z. B. the formation of a preferably one-piece coupling rod made from a single semi-finished product, preferably including an assembly structure on the first end section and / or assembly structure on the second end section.

The trimming can e.g. B. be carried out in order to create an incision (z. B. a recess) between the first end portion and the second end portion in the base component.

It is possible that the forming includes that the basic component is rotated about its longitudinal axis and / or relative to the incision, preferably is rotated on and / or around the incision. The forming can, for. B. include that the basic component is rotated by between 30 ° and 150 °, preferably by substantially 90 ° (expediently plus / minus 15 °).

It is possible that the forming z. B. comprises a preferably transverse to the longitudinal axis of the basic component and / or relative to the incision taking place bending in order to generate a kink or a curve (in particular a change of direction) in the basic component, so that, for. B. the first end portion and the second end portion are arranged in different planes.

The trimming can e.g. B. include that at least one preferably in the circumferential direction closed (through-assembly) hole is produced in the first end section and / or at least one (through-assembly) hole, preferably closed in the circumferential direction, is produced in the second end section.

It is possible for the trimming to include making an incision (e.g. a recess) in an end face of the first end section and / or an incision (e.g. a recess) being made in an end face of the second end section.

The forming can, for. B. a reshaping of the first end section and / or a reshaping of the second end section, preferably to create an assembly structure, in particular two tabs in the first end section, and / or to generate an assembly structure, in particular two tabs in the second end section.

The two tabs of the first end portion can, for. B. be separated from each other by the incision in the end face of the first end portion.

The two tabs of the second end portion can, for. B. separated from one another by the incision in the end face of the second end portion.

The two tabs of the first end portion can, for. B. be aligned substantially parallel to each other and / or be substantially planar (z. B. plate-shaped).

The two tabs of the second end portion can, for. B. be aligned substantially parallel to each other and / or be substantially planar (z. B. plate-shaped).

The deformation of the first end portion and / or the deformation of the second end portion can, for. B. comprise a pressing process and / or take place by means of a (z. B. single-stage) tool, preferably to form the two tabs of the first end section and / or the two tabs of the second end section.

The deformation of the first end portion and the deformation of the second end portion can, for. B. by means of one and the same (z. B. single-stage) tool or z. B. by means of two (z. B. single-stage) tools.

The tool can e.g. B. comprise a die and / or perform a pressing of the first end portion and / or the second end portion, for. B. to form the two tabs of the first end portion and / or the two tabs of the second end portion.

The basic component can, for. B. have a maximum outer circumference between the first end section and the second end section, wherein the two tabs of the first end section and / or the two tabs of the second end section can preferably be deformed by means of the pressing process beyond the outer circumference.

The method can e.g. B. comprise welding, preferably laser welding, of the basic component along the incision.

The trimming can e.g. B. punching, laser cutting, plasma cutting, flame cutting and / or water jet cutting.

The basic component is preferably a hollow profile, e.g. B. a round or rectangular hollow profile.

It is Z. B. possible that the steps are preferably carried out one after the other in the following sequence: providing the basic component, trimming the basic component and reshaping the basic component, and z. B. welding the base member along the cut between the first end portion and the second end portion.

The method, in particular the provision, the trimming and / or the reshaping, is preferably carried out in an automated manner.

The forming is preferably cold forming.

It is possible that the method enables the production of a coupling rod (preferably one-piece and / or formed from a single basic component and suitably manufactured), in particular including an assembly structure on the first end section and / or on the second end section and / or without the requirement of a joining process .

It is possible that e.g. B. a connection component with mounting structure, preferably with (z. B. male or female) connection cone is mounted on the first end portion, so that in particular the method thus also z. B. may include a joining process.

The invention also relates to a coupling rod (e.g. a stabilizer support) manufactured by means of a method as disclosed herein and e.g. B. integrated in a chassis of a motor vehicle, preferably a commercial vehicle such as a truck or a bus.

• 1 zeigt zwei Ansichten eines Grundbauteils zum Herstellen einer Koppelstange für ein Fahrwerk eines Kraftfahrzeugs gemäß einer Ausführungsform der Erfindung,
• 2 zeigt zwei Ansichten des Grundbauteils nach erfolgtem Beschneiden des Grundbauteils,
• 3 zeigt zwei Ansichten des Grundbauteils nach erfolgtem Umformen des Grundbauteils,
• 4 zeigt zwei Ansichten des Grundbauteils nach erfolgtem Umformen des Grundbauteils,
• 5 zeigt zwei Ansichten des Grundbauteils nach erfolgtem Umformen des Grundbauteils, und
• 6 zeigt eine perspektivische Ansicht einer Koppelstange, hergestellt aus einem einzigen Grundbauteil gemäß einer Ausführungsform der Erfindung.

The preferred embodiments and features of the invention described above can be combined with one another. Other advantageous developments of the invention are disclosed in the subclaims or result from the following description in a more preferred manner Embodiments of the invention in connection with the attached figures.

• 1 shows two views of a basic component for producing a coupling rod for a chassis of a motor vehicle according to an embodiment of the invention,
• 2 shows two views of the basic component after the basic component has been trimmed,
• 3 shows two views of the basic component after reshaping of the basic component,
• 4th shows two views of the basic component after reshaping of the basic component,
• 5 shows two views of the basic component after reshaping of the basic component, and
• 6th shows a perspective view of a coupling rod made from a single basic component according to an embodiment of the invention.

The 1 to 5 illustrate a method of making a coupling rod 100 for a chassis of a motor vehicle according to one embodiment of the invention, preferably a method with which a one-piece and / or a single basic component 10 trained appropriately finished coupling rod 100 can be produced.

1 shows two views of the basic component 10 for making the coupling rod 100 and illustrates a step S1 to provide the basic component 10 . The basic component 10 is a semi-finished product with a round or rectangular hollow profile. The basic component 10 has a first end portion E1 and a second end portion E2 on. The two end sections E1 and E2 serve to form an assembly structure for assembly in the chassis.

2 shows two views of the basic component 10 and illustrates a step S2 for trimming the basic component 10 .

The pruning S2 of the basic component 10 includes creating an incision 11 in the basic component 10 between the first end portion E1 and the second end portion E2 . The incision 11 creates a recess and thus a weak point in the basic component 10 to avoid later deformation relative to the incision 11 to enable or facilitate.

The pruning S2 comprises that in the first end portion E1 z. B. two holes 12 and an incision on the face 14th in an end face of the first end section E1 is produced.

The pruning S2 comprises that in the second end portion E2 z. B. two holes 13 and an incision on the face 15th in an end face of the second end section E2 is produced.

3 shows two views of the basic component 10 and illustrates a step S3.1 for reshaping the basic component 10 .

The forming S3.1 that includes the basic component 10 relative to the incision 11 is bent around a kink or curve in the base component 10 to produce so that the first end section E1 and the second end portion E2 are arranged in different levels.

4th shows two views of the basic component 10 and illustrates a step S3.2 for reshaping the basic component 10 .

The forming S3.2 that includes the basic component 10 around its longitudinal axis and / or relative to the incision 11 especially around the incision 11 , is rotated, preferably by essentially 90 °.

The forming S3.2 can e.g. B. also include that in the second end portion E2 two tabs can be created. The two tabs of the second end section E2 are through the incision 15th in the end face of the second end section E2 separated from each other. The two tabs of the second end section E2 are aligned essentially parallel to one another and are essentially planar and in particular are essentially plate-shaped.

The forming S3.2 is preferably carried out by a single-stage tool having a die, by means of which the second end section E2 is pressed to the tabs of the second end portion E2 to create.

5 shows two views of the basic component 10 and illustrates a step S3.3 for reshaping the basic component 10 . 5 shows a suitably completed coupling rod 100 .

The forming S3.3 can e.g. B. comprise that in the first end portion E1 two tabs can be created. The two tabs of the first end section E1 are through the incision 14th in the end face of the first end section E1 separated from each other. The two tabs of the first end section E1 are aligned essentially parallel to one another and are essentially planar and in particular are essentially plate-shaped.

The forming S3.3 is preferably carried out by a single-stage tool having a die, by means of which the first end section E1 is pressed to the tabs of the first end section E1 to create.

The 5 shows that the basic component 10 between the first end portion E1 and the second end portion E2 has a maximum outer circumference.

By forming S3.2 and S3.3 in particular by pressing the two tabs of the first end section E1 and / or the two tabs of the second end section E2 deformed beyond the outer circumference.

The pruning S2 can e.g. B. punching, laser cutting, plasma cutting, flame cutting and / or water jet cutting.

The forming S3.1 , S3.2 and S3.3 is preferably cold forming.

The production sequence preferably corresponds to the sequence of 1 to 5 so that it is expedient to first provide S1 is carried out, followed by the pruning S2 is carried out, then the forming S3.1 is carried out, and then the forming S3.2 and or S3.3 is carried out. A welding of the incision 11 can be expedient after step S3.1 respectively.

6th shows a perspective view of a coupling rod 100 , made from a single basic component 10 . The coupling rod 100 can essentially by means of the method according to 1 to 5 be made, the coupling rod 100 of the 6th in contrast to the coupling rod 100 of the 5 Is executed without kinks.

The invention is not restricted to the preferred embodiments described above. Rather, a large number of variants and modifications are possible which also make use of the inventive concept and therefore fall within the scope of protection. In addition, the invention also claims protection for the subject matter and the features of the subclaims regardless of the features and claims referred to.

List of reference symbols

10

Basic component, preferably a hollow profile

11

Incision, preferably recess, in particular between the first end section and the second end section

12

hole

13

hole

14th

frontal incision, preferably recess

15th

frontal incision, preferably recess

E1

first end section

E2

second end section

100

Coupling rod, preferably stabilizer support

S1

Provide

S2

trimming

S3.1

Forming

S3.2

Forming

S3.3

Forming

Claims (17)

A method for producing a coupling rod (100) for a chassis for a motor vehicle, preferably in order to form a one-piece coupling rod (100) formed from a single basic component (10), with the following steps: Providing (S1) a basic component (10) with a first end section (E1) and a second end section (E2), Trimming (S2) the basic component (10), and Forming (S3.1, S3.2, S3.3) the basic component (10). Procedure according to Claim 1 wherein the trimming (S2) is carried out to create an incision (11) between the first end portion (E1) and the second end portion (E2). Procedure according to Claim 1 or 2 , wherein the forming (S3.1) comprises that the basic component (10) is bent in order to produce a kink or a curvature, preferably at the incision (11) between the first end section (E1) and the second end section (E2). Method according to one of the preceding claims, wherein the forming (S3.2) comprises that the basic component (10) rotates about its longitudinal axis and / or relative to the incision (11) between the first end section (E1) and the second end section (E2) is, preferably by between 30 ° and 150 °, in particular by substantially 90 °. Method according to one of the preceding claims, wherein the trimming (S2) comprises that at least one hole (12) is produced in the first end section (E1) and / or at least one hole (13) is produced in the second end section (E2). Method according to one of the preceding claims, wherein the trimming (S2) comprises that an incision (14) is produced in an end face of the first end section (E1) and / or an incision (15) is produced in an end face of the second end section (E2) becomes. Method according to one of the preceding claims, wherein the forming (S3.2, S3.3) comprises a forming (S3.3) of the first end section (E1) and / or a forming (S3.2) of the second end section (E2), preferably to produce two tabs in the first end section (E1) and / or to produce two tabs in the second end section (E2). Procedure according to Claim 7 - The two tabs of the first end section (E1) are separated from one another by the incision (14) in the end face of the first end section (E1), - the two tabs of the second end section (E2) by the incision (15) in the end face of the second end section (E2) are separated from one another, - the two tabs of the first end section (E1) are aligned essentially parallel to one another and / or are essentially planar, and / or - the two tabs of the second end section (E2) in Are aligned essentially parallel to one another and / or are essentially planar. Procedure according to Claim 7 or 8th , wherein the reshaping (3.3) of the first end section (E1) and / or the reshaping (S3.2) of the second end section (E2) comprises a pressing process and / or takes place by means of a single-stage tool. Procedure according to Claim 9 wherein the tool comprises a die. Method according to one of the preceding claims, wherein the basic component (10) between the first end section (E1) and the second end section (E2) has a maximum outer circumference and the two tabs of the first end section (E1) and / or the two tabs of the second end section (E2) are preferably deformed beyond the outer circumference by means of the pressing process. Method according to one of the preceding claims, comprising the step of: welding, preferably laser welding, the basic component (10) along the incision (11) between the first end section (E1) and the second end section (E2). Method according to one of the preceding claims, wherein the trimming (S2) comprises: punching, laser cutting, plasma cutting, flame cutting and / or water jet cutting. Method according to one of the preceding claims, wherein the basic component (10) is a hollow profile, preferably a round or rectangular hollow profile. Method according to one of the preceding claims, wherein the steps are carried out in the following order: - providing (S1) the basic component (10), - Trimming (S2) the basic component (10), and - Forming (S3.1, S3.2, S3.3) of the basic component (10), and preferably - Welding the base component (10) along the incision (11) between the first end section (E1) and the second end section (E2). Method according to one of the preceding claims, wherein the forming (3.1, 3.2, 3.3) is cold forming. Coupling rod (100), produced by means of a method according to one of the preceding claims and preferably integrated into a chassis of a motor vehicle.

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