DE102015114051A1 - Apparatus and method for producing spokes - Google Patents

Abstract

The present invention relates to a device (1) and a method for producing spokes (100), in particular for at least partially muscle-powered two-wheeled vehicles (200). The device comprises a forming device (2) for forming a wire material (3). The shaping device comprises a molding tool (4) acting on a machining section (13) of the wire material (3) and an actuating device (5) for actuating the molding tool (4). In this case, the molding tool (4) comprises four tool units (14, 24, 34, 44). The actuating device (5) is suitable and designed to allow the tool units (14, 24, 34, 44) to act in a pairing fashion on the processing section (13) of the wire material (3) in pairs.

Description

The present invention relates to an apparatus and a method for producing spokes, in particular for at least partially muscle-powered two-wheeled vehicles. The device comprises at least one forming device for forming a wire material.

Durable and reliable spokes are an essential feature of high quality wheels for two-wheelers. In addition to spokes made of wire spoke some spokes are made of non-metallic materials such. B. fiber reinforced plastics. However, metallic wire spokes still have many advantages over spokes made of other materials and therefore offer good opportunities for the construction of lightweight and durable wheels especially in the field of sports bikes.

With metal spokes, the reduction of the spoke wire to different diameters is a particularly important step, as it can save considerable weight. In this case, the method used or the machines used are of great importance, as this greatly influences the durability and the stability of the spokes. So z. B. pulling the spoke wire, as from the DE 466 866 described, rather disadvantageous for the material structure and thus the load capacity. Reducing machines which reduce the diameter by hammering have proved to be particularly advantageous. This improves the toughness of the wire material and strengthens the load capacity of the spoke.

The known in the art machines allow time decades reliable production of heavy-duty spokes. However, with these machines or methods, the time required for the production is very high and therefore expensive. An increase in the throughput by increasing the feed rate and stroke rate or reducing speed, however, generally has an adverse effect on the quality and dimensional stability in the case of the known machines. With the previous machines an improvement in the economics of spoke production is therefore not meaningfully possible.

It is therefore the object of the present invention to make the production of especially high quality spokes more economical.

This object is achieved by a device for producing spokes having the features of claim 1 and by a device according to claim 20 and by a method having the features of claim 21. Preferred developments of the invention are the subject of the dependent claims. Further advantages and features of the invention will become apparent from the embodiment.

The device according to the invention serves to produce spokes. The device according to the invention comprises at least one forming device for forming a wire material. The forming device comprises at least one forming tool acting on at least one processing section of the wire material. The shaping device comprises at least one actuating device for actuating the molding tool. In this case, the molding tool comprises at least four tool units. The actuating device is suitable and designed to allow the tool units to act in a pairing fashion on the processing section of the wire material in pairs.

The device according to the invention has many advantages. A significant advantage is that at least four tool units are provided with which the wire material is formed in pairs. As a result, a considerably faster processing of the wire material is possible. At the same time, the quality standard can be maintained or even improved. In the production of spokes so a much higher throughput of high quality spokes can be achieved. As a result, economical production of high quality wire spokes is possible.

The spokes made with the device are particularly suitable for at least partially powered by muscle power two-wheelers and preferably for muscle power powered bicycles. The spokes are also for bicycles, which support motor power, such as pedelecs. The spokes can also be provided for pure electric bicycles. It is also possible that the spokes are provided for tricycles and / or four-wheeled vehicles or motorcycles. The spokes are particularly suitable for tangential and radial lacing.

The finished spokes can z. B. as round spokes and / or as z. B. aerodynamic flat spokes may be formed. The spokes shafts can be reduced to different diameters and z. B. be designed as thickening, double-thickness and / or 3D spokes. The wire material is in particular a spoke wire and preferably a metallic or a metal wire existing spoke wire. In the context of the present invention, the term wire material can preferably be replaced by the term spoke wire. As a material suitable metal materials are used, such. As steel, aluminum, titanium, magnesium and / or composite materials.

The actuating device is particularly suitable and designed in each case to allow two of the at least four tool units to act on the machining section of the wire material in a shaping manner. During the forming, the molding tool in particular acts directly and / or directly on the wire material. In particular, during forming, the molding tool contacts the wire material at least temporarily.

Particularly preferably, the actuating device is suitable and designed to actuate a pair consisting of two tool units at a time. Such a deformation, in which simultaneously two tool units act on the wire material, allows a particularly uniform and precise shaping of the spokes. But it is also possible that a temporal offset is provided when operating the tool units of a pair. Furthermore, it is possible that a "pair" comprises at least three or four or a plurality of tool units.

It is also particularly preferred that the pair-wise operated tool units are arranged opposite one another. Such a configuration has the advantage that the tool units of the pair serve each other as an abutment. But it is also possible that the pair-operated tool units are arranged in a different way. For example, the tool units can be offset from each other at a certain angle or arranged side by side. In such an arrangement, it is preferred that the respective tool unit is opposite to an abutment suitable for shaping and, for example, an anvil.

The actuator is particularly preferably adapted and adapted to simultaneously disengage or disengage another pair of two tool units during actuation of a pair. This means that the other pair is unactuated at this moment of actuation of a pair or is kept in engagement unactuated. In particular, the actuator is adapted and configured to position the unactuated or unactuated engaged tool units for future operation. Such an unactuated engagement is in particular characterized in that the tool units do not act on the wire material reshaping and preferably have no direct contact with the wire material. In particular, the unactuated tool units are arranged at a distance from the wire material. This has the advantage that the actuated tool units an enlarged access area to the wire material is available and they can thus act over a larger area.

The actuator is preferably adapted and adapted to operate the pairs alternately. In particular, the actuating means is adapted and adapted to move the one pair from an actuated to an unactuated state and to enable the other pair in particular at the same time from an unactuated state or engagement in an actuated state or engagement. Such a configuration allows a particularly high throughput, since the dead time occurring after a successful operation is significantly shortened until re-actuation. During the dead time of one pair, the other pair can already be actuated for forming. This allows a continuous flow of processing.

In all embodiments it is preferred that the actuating device is suitable and designed to rotate the tool units about a longitudinal axis of the wire material. In this case, the actuating device is preferably suitable and designed to move the tool units along the circumference. This allows for uniform machining along the entire circumference of the wire material.

Preferably, the device comprises at least one feeding device. The feeding device is particularly suitable and designed to move the wire material through the forming device. For example, the wire material can be pulled and / or pushed by the forming device. In particular, the feed device is suitable and designed to move the wire material so that the tool units are aligned in the axial direction along the wire material.

Preferably, the device is suitable and designed to operate the feed device and the actuating device synchronized. In particular, the machining in the axial direction depends on the machining along the circumference. In particular, the synchronous operation is designed so that a complete and homogeneous deformation takes place over the entire circumference and / or the desired length of the wire material. At least one transition between two thickness ranges can be made with an improved tolerance range.

The invention not only enables increased machining speed and thus more economical production of spokes, but also faster production of improved spokes. It not only increases the quantity, but at the same time improves the quality. The larger number of tool units can be doubled compared to the prior art Lead the number of strokes. This is at in comparison to the prior art z. B. constant or even reduced impact force of the individual tool units total achieved an increased processing speed, while at the same time an even better structure and thus a higher durability of the metallic wire material can be achieved.

The actuating device comprises in particular at least one impact roller device. The impact roller device comprises in particular at least a plurality of impact roller units. For example, a striking roller unit comprises at least one impact roller and at least one bearing and / or an axle and / or a shaft. The impact roller device has at least one (in particular at least in the circumferential direction) movable impact roller unit. In particular, the impact roller device comprises at least one and in particular a plurality of (in particular at least in the circumferential direction at least substantially) stationary impact roller units. In particular, the impact roller unit comprises a larger number of (in particular at least substantially in the circumferential direction) stationary impact roller units than on movable impact roller units. For example, the stationary impact roller units are arranged in a circle. Inside the circle are in particular the movable and preferably rotatable impact roller units.

Consequently, the impact roller device comprises in particular fixed impact roller units and movable impact roller units, wherein preferably a number of movable impact roller units correlates with a number of tool units and in particular equal to an integer multiple of the number of movable impact roller units plus two.

Particularly preferably, each tool unit is assigned at least one impact roller unit. The movable impact roller units are rotatably arranged together with the tool units within the circle of fixed Schlagrolleneinheiten. In this case, the fixed and the movable impact roller units are positioned to each other so that they overlap at least partially on at least one circumferential line. The movable impact roller units are arranged in particular displaceable in the radial direction. As a result, the movable impact roller units undergo a targeted displacement radially inward when passing the fixed impactor roller units, which displacement is transmitted indirectly and / or directly as a shock to a tool unit arranged radially further inwardly. Such a roller bearing device allows a very uniform and reliable deformation of the wire material and a very short processing time.

Particularly preferably, the forming device comprises four tool units and an actuating device designed as a knocking roller device with a plurality of substantially fixed or fixed in the circumferential direction impact roller units and movable (in particular rotatable about the spoke wire) impact roller units. The number of rotatable impact roller units preferably correlates with the number of tool units and / or the number of fixed impact roller units. The number of rotatable impact roller units is particularly preferably greater than the number of fixed impact roller units. Preferably, the number of rotatable impact roller units is an even number. Preferably, the number of movable impact roller units is not an integer multiple of the number of fixed impact roller units. Particularly preferably, the number of movable impact roller units differs by the number 2 of an integer multiple of the number of fixed impact roller units.

The number of fixed impact roller units is preferably 4 and the number of rotatable impact roller units is greater than or equal to 6. The number of rotatable impact roller units is particularly preferably 14.

In all embodiments, it is also particularly preferred that the molding tool is suitable and designed to reshape the wire material by abrupt action of the tool units. The molding tool is particularly suitable and designed to reduce a transverse dimension of the wire material in particular stepwise.

Preferably, the mold is also suitable and adapted to reduce a diameter of the wire material. The diameter can be, for example, a mean diameter and / or a maximum and / or minimum diameter of a round cross section, as is the case, for example, with cylindrically shaped spokes. The tool units are actuated in particular abruptly by the impact roller device. In the sudden action both tool units of the pair make a particular radial movement. The sudden action is designed, for example, as a reduction and / or a compression and / or preferably a forging and / or embossing.

The direction of impact is in particular transversely to the longitudinal direction of the wire material. Preferably, the direction of impact is at least in Essentially in the radial direction. Preferably, the sudden action is effected by a pair with at least two tool units. It is also possible that one of the paired tool units acts abruptly and the other tool unit serves as an abutment in the manner of an anvil.

It is possible and preferred that the actuating device comprises at least one adjusting device. The adjusting device is particularly suitable and designed to set at least one characteristic measure for the deformation. Such an adjustment has the advantage that the deformation of the wire material for the production of different types of spokes can be set once or even during operation, without, for example, the molds must be elaborately removed and replaced. In addition, spokes can be produced which have different cross sections along their spokes shafts. The adjustment device is also particularly suitable and designed to be operated in dependence on the axial positioning of the wire material in relation to the molding tool. Such embodiments allow, for example, a very precise working out of spoke shaft sections with different diameters and / or the transitions therebetween.

Preferably, the adjusting device is suitable for setting a Reduziermaßes and formed. In particular, the reducer relates to a distance between the actuator and the tool unit. In this way it is possible to set how far the tool unit is pressed (maximum) by the actuating device into the wire material. The Reduziermaß concerns in particular the reduction of a transverse dimension and / or a diameter of a cross section of the wire material. For this purpose, the adjusting device preferably comprises at least one wedge, which is arranged between the actuating device and in particular a fixed impact roller unit and the respective tool unit. In particular, at least one wedge device is provided for each tool unit and / or each movable impact roller unit.

In particular, in each case a tool unit comprises at least one head section designed for forming the wire material. The head section comprises at least one shaping machining groove. The machining groove extends in particular in an axial direction. The machining groove extends in particular axially to a direction of rotation of the molding tool. The machining groove is in particular designed such that at least one radial section of the wire material is encompassed. By virtue of such an embodiment, the wire material can be reliably guided on the processing section and precisely shaped.

The machining groove is preferably concave. In particular, the machining groove extends over an angle arc of at least 90 °. Preferably, the machining groove extends over an angle arc of at least 100 ° and more preferably of at least 120 °. Also possible is a larger angle arc, for example, more than 130 ° or 160 °. Such elbows allow a particularly extensive radial encompassing of the wire material. The angle arc can also be less than 90 °. It is also possible that the head section is flat or convex. For example, the head section may also have a puncture or a hallmark. The machining groove preferably has an angular arc with a constant radius. It is also possible that the machining groove has an angular arc with a variable radius, for example for producing oval and / or parabolic spoke cross sections.

The head section extends in particular in a ramp shape at at least one axial end. Such an embodiment has the advantage that a well-defined and particularly uniform transition in the spouts is achieved. Such an outlet, for example, exists between two spoke shaft sections, which have cross sections with different diameters. By appropriately shaped extensions a continuous transition of the two spoke shaft sections is achieved, so that in particular a disadvantageous notch effect is counteracted. Preferably, the ramp-shaped course is formed at both ends of the head portion. With such a mold then spouts can be processed both from a larger to a smaller and from a smaller to a larger diameter.

Preferably, the circumferential length of the angle arc is formed variable in the ramp-shaped head portion. In particular, the circumferential length of the angle arc increases toward the axial end of the head portion. It is also possible that the circumferential length of the angle arc decreases in the direction of the axial end of the head portion. In particular, the circumferential length is continuously increasing and / or decreasing. Such embodiments allow the formation of particularly uniform spouts.

The tool units can adjoin each other at least in sections. In particular, the contiguous form Tool units around a closed circumference around the wire material. As a result, the machining in the circumferential direction is very even at high processing speeds.

The tool units preferably have side portions along which they are disposed adjacent to one another. The side sections of a tool unit are preferably arranged at an angle of 90 ° to each other. The tool units border in particular directly on each other at their side sections. It can also be provided smaller and / or larger angle. Preferably, an angle is selected which results at least approximately from 360 ° divided by the number of tool units.

It is also possible that the tool units each have different angles with respect to their side sections. Preferably, the angles of the side portions are formed identically in opposite or paired tool units.

It is preferred that the tool units are identical. Particularly preferably, the pairwise operated tool units are identical. In particular, all tool units of the molding tool are identical. It is also possible that the tool units are designed differently. For example, the tool units can then be designed in opposite directions and / or complementary. For example, a tool unit of one pair may have a convex head portion and the other a concave head portion.

In all embodiments, it is particularly preferred that an even number of tool units is provided.

Another device according to the invention also serves for the production of spokes, in particular for at least partially muscle-powered two-wheeled vehicles. The device comprises at least one forming device for forming a wire material. The forming device comprises at least one forming tool acting on at least one processing section of the wire material. The shaping device comprises at least one actuating device for actuating the molding tool. In this case, the mold comprises three tool units. The actuating device is suitable and designed to allow the three tool units to act on the machining section of the wire material to work together.

This device also has the advantage that economical and possibly also more precise machining of wire spokes is possible. The interaction of three tool units can also be used to increase production throughput. In particular, the three tool units are actuated at the same time. Particularly preferably, the three tool units act in a striking and in particular reducing manner on the machining section. Preferably, the tool units are configured as previously described. The shaping device comprises in particular at least one feed device and / or at least one adjusting device. The actuating device is preferably designed as at least one impact roller device.

The inventive method is used for the production of spokes, in particular for at least partially powered by muscle power two-wheelers. In this case, a wire material is reshaped with at least one forming device. With at least one mold is acted upon at least one processing section of the wire material. The mold is actuated by at least one actuator. In this case, the mold comprises at least four tool units with which is transformed. With the tool units is acted in pairs on the processing section of the wire material forming.

The method according to the invention has the advantage that it is formed in pairs with at least four tool units. As a result, a particularly high throughput in the production of spokes can be achieved.

Preferably, the tool units of a pair are operated simultaneously. The actuation takes place in particular by means of the actuating device.

In particular, another pair consisting of two tool units remains unactuated in engagement. The two pairs are preferably operated alternately. As a result, a considerable reduction in the processing speed is achieved.

In all embodiments of a device and the method according to the invention, a feed rate or a relative speed of the relative movement between the wire material and the forming device can be controlled and is preferably changed during the processing of a spoke. The relative speed can at times be very low, equal to 0 or even negative, z. B. to allow a particularly intensive processing of one or more sections.

In all embodiments, a stepwise forming and in particular forging of the spoke wire. The final shape of the spoke is achieved by a variety of punches. After forming by hammering, the spoke regularly has a round outer contour over the spoke length. Thereafter, at least one embossing step can be provided, which brings about at least one longitudinal portion of the spoke, the substantially round spoke in a desired cross-sectional shape, for. B. knife shape. There, the spoke is formed as a flat spoke and / or flattened like a knife.

It is preferred in developments of all embodiments that the forming device is designed as a Reduzierkopf or includes such. The reducing head comprises (at least) an outer head and (at least) an inner head, which are rotatable relative to each other. In particular, the inner head is rotatable. Preferably, a speed of the inner head is between about 500 and 2000 revolutions per minute (rpm). Particularly preferably, a rotational speed of the inner head is between approximately between approximately 750 and 1500 rpm. A preferred speed is about 925 U / min.

In a specific embodiment, the speed of the inner head between about 800 and 1400 rev / min can be varied.

In four tool units, which are respectively in pairs engaged with the spoke wire, and 14 movable in the circumferential direction impact roller units and four circumferentially stationary impact roller units results in z. B. 900 U / min. a strike rate of 210 beats per second on the spoke wire, enabling effective and high-quality spokes production.

The (axial) feed rate or relative speed between spoke and forming device is in particular between 0.005 and 0.04 m / s and more preferably between 0.0075 and 0.025 m / s.

With a spoke length of 300 mm, depending on the initial diameter and reduced diameter, machining times of between 5 and 40 seconds result.

The reduction of the diameter serves not only the weight reduction, but in particular also an improvement of the mechanical properties according to the principle of an expansion screw, where by a refraction stress peaks on the head and the screw shaft are reduced by the "elastic" middle part. Here, the reduced diameter section acts as an "elastic" middle part.

Further advantages and features of the present invention will become apparent from the description of the embodiment, which will be explained with reference to the accompanying figures below.

In the figures show:

1 a schematic view of a bicycle;

2 a schematic view of a spoke;

3 a highly schematic representation of a device according to the invention;

4 a highly schematic forming device;

5 a tool unit in a side view;

6 the tool unit of 5 in a sectional view taken along the line AA;

7 a schematic view of a mold; and

8th another highly schematic view of a mold;

The 1 shows a schematic representation of a bicycle designed as a bicycle 200 , The bike has two wheels 201 on, namely a front wheel and a rear wheel. Furthermore, a frame 203 , a fork 204 , a handlebar 206 and a saddle 207 intended. As a drive pedals and here a derailleur are provided. The front wheel and the rear wheel are each at dropouts on the fork 204 or the frame 203 attached. The front wheel and the rear wheel 101 . 102 each have a rim 210 and spokes made with the device according to the invention 100 on which with a hub 208 are connected. The spokes 1 are shown schematically only on the basis of the magnification and are described with reference to FIG 2 shown in more detail.

In the 2 is a spoke 100 shown in a schematic longitudinal view, which with the device according to the invention 1 was produced. The image is not to scale to better illustrate the principle. Two exemplary cross sections 103 the spoke are hatched. The cross sections 103 have different diameters 33 on. As a transition between the areas of different diameters 33 There are spouts here 104 intended. The spouts 104 have a different length and a different slope. An arrow outlines the longitudinal axis 23 the spoke.

The spoke 100 is by forming from a wire material 3 manufactured. As a wire material, a special spoke wire was used, which has, for example, a tensile strength of 1200 N / mm ² and more. The spoke wire was striking on the corresponding cross sections 103 or diameter 33 reduced.

The spoke 100 has a spider head here at one end 105 and here at another end via an external thread 106 , which is used for screwing with a spoke nipple, not shown. Between the two ends of the spokes shaft extends 101 , The first end 105 will be at the hub 208 attached. The spoke 200 extends from the hub 208 out to the second end 106 where the external thread then with a spoke nipple on the rim 210 is attached.

The spoke 100 is here exemplified as a double-thick spoke. Are also possible other spoke shapes, such. B. thickening spokes or flat spokes. Here is the spokes shaft 101 in different shank sections 111 . 121 . 131 . 141 . 151 specifically transformed. The two at the ends 105 . 106 lying shaft sections 111 . 151 are cylindrical here and have a cross section 103 with a diameter of 2.0 mm. The intermediate shaft section 131 is also cylindrical and has a cross section 103 with a diameter 33 of 1.5 mm.

By such a reduction of the spoke shaft 101 The weight can be significantly reduced, while maintaining the necessary stability or even increased. The spouts 104 are designed so that an unfavorable notch effect is counteracted and a particularly stable transition is possible. The head 105 lying shaft section 121 here has a shorter spout 104 as the other end 106 lying shaft section 141 on. This embodiment takes into account the impeller 201 occurring forces on the spoke 100 ,

In the 3 is the device according to the invention 1 for the production of spokes 100 shown by way of example. The device 1 can be operated by the method according to the invention. The device 1 includes a forming device 2 for forming a spoke wire made of a metallic wire material 3 consists. The wire material 3 is by means of a feed device designed here as a feed device 8th through the forming device 2 guided.

The forming device 2 includes a mold 4 with four tool units, with only one tool unit for a better overview 14 is drawn. The other tool units 14 are arranged substantially symmetrically. For actuating the molding tool 4 an actuator is provided. The actuating device 5 is here as a club roll facility 15 formed having a plurality of fixed Schlagerolleneinheiten 25 as well as movable impact roller units 35 includes.

To set a Reduziermaßes is an adjustment 6 intended. The adjusting device 6 has a wedge device 16 on which between the impact roller unit 35 and the tool unit 14 is arranged. By an axial displacement of the wedge device 16 is the distance between the impact roller unit 35 and the tool unit 14 adjusted, so that the reduction depth can be adjusted accordingly.

The 4 zei the forming device 2 with the impact roller device 15 and the mold 4 with the four tool units 14 . 24 . 34 . 44 , The forming device 2 is here as a reducing head 12 with an outside head 22 and an inner head 32 educated. At the outer head 22 are the fixed impact roller units 25 attached. The impact roller units 25 are arranged in a circle and each rotatably mounted about its own axis. The inner head 32 is rotatable in the reducing head 12 stored. At the inner head 32 is the mold 4 attached with the tool units.

Also on the inner head 32 attached are the movable impact roller units 35 which are each rotatably mounted about its own axis. In addition, the movable impact roller units 35 radially displaceable on the inner head 32 added. By turning the inner head 32 (about the central axis through the spoke) are the impact roller units 35 process and around the wire material 3 rotates. The fixed and movable impact roller units 25 . 35 overlap along a common perimeter.

Will the inner head 32 turned, so are the movable impact roller units 35 when passing the fixed impact roller units 25 from these radially in the direction of the axis of rotation of the inner head 32 postponed. As a result, pushes the impact roller unit 35 over an underlying pestle 45 and the wedge device 16 on the respective tool unit 14 . 24 . 34 . 44 , At a corresponding speed of the inner head 32 learn the tool units 14 . 24 . 34 . 44 so when passing the fixed impact roller units 25 targeted blows, which for forming the wire material 3 be used. The wire material 3 is located in the center of the inner head 32 and is not shown here for clarity.

The tool units 14 . 24 . 34 . 44 are arranged here in pairs opposite one another. Together with the pestle 45 , the wedge devices 16 are the tool units 14 . 24 . 34 . 44 in a leadership facility 94 added. By the arrangement of the impact roller units 25 at the outer head 22 this results in an alternating operation of the paired tool units 140 . 240 , During one of the two couples 140 through the impact roller device 15 is pressed, the other pair remains 240 unconfirmed. These are the impact roller units 25 in the outer head 22 arranged so that the impact roller units 35 of a couple 140 fixed impact roller units 25 happen while the impact roller units 35 the other, unconfirmed couple 240 between 2 fixed impact roller units 25 are positioned.

The 5 shows a single tool unit 14 , In the 6 is the tool unit 14 of the 5 shown in a cut along the line AA side view. The tool unit comprises one to the wire material 3 directed head section 54 which is axially in the longitudinal direction of the wire material 3 running machining groove 64 having. The machining groove 64 is to the desired shape of the memory 100 customized. The machining groove 64 is designed here by way of example concave.

The machining groove 64 runs in a central area of the head section 54 linear and substantially parallel to the wire material to be processed 3 , At the two axial ends 541 . 542 is the head section 54 formed ramp-shaped. The machining groove extends in the central area 64 over an angle arc 640 of 120 °. In the ramped ends 541 . 542 is the angle arc 640 the machining groove 64 also 120 °. However, the circumferential length of the angle arc in the direction of the axial end of the 541 . 542 in the ramp in the head section 54 to. By such a configuration can spouts 104 between cross sections with smaller and larger diameters 33 be formed particularly uniform and precise.

In the 7 is an enlarged view of the tool units 14 . 24 . 34 . 44 from the 4 shown. The tool units are identical here. In the area of their head sections 540 the tool units are bounded along their respective side sections 74 directly to each other. In the middle of the circumference of the not drawn here wire material runs 3 , The side sections 74 a single tool unit 14 here are at an angle of 90 ° to each other, so that by using four tool units a (substantially or even completely) closed circumference around the central wire material 3 results.

In the position shown here are the upper and the lower tool unit 14 . 24 in the actuated engagement of the actuator 5 , The two lateral tool units 34 . 44 are here unconfirmed in the engagement of the actuator 5 , In the position shown here thus affects the pair 140 consisting of the tool unit 14 and 24 striking on the wire material. The other couple 240 consisting of the tool units 34 and 44 , does not affect the wire material here 3 one.

In the 6 are the tool units 14 . 24 . 34 . 44 from the 1 shown after a change of operation. Now the two side tool units are located 34 . 44 in pairs in the engaged engagement, so that they transform the wire material. The other couple 140 is now unchecked. During the rotation of the inner head 32 opposite the outside head 22 Now continues to be a constant change in the pairwise actuation of the tool units 14 . 24 . 34 . 44 ,

LIST OF REFERENCE NUMBERS

1

contraption

2

reshaping

3

Wire material

4

mold

5

actuator

6

adjustment

8th

feeding

12

 reducing head

13

 machining section

14

 tool unit

15

 Impact roller device

16

 wedge device

22

 out of head

23

 longitudinal axis

24

 tool unit

25

 Impact roller unit

32

 inner head

33

 diameter

34

 tool unit

35

 Impact roller unit

44

 tool unit

45

 tappet

54

 header

64

 machining groove

74

 side portion

94

 guide means

100

 spoke

101

 spoke shaft

103

 cross-section

104

 outlet

105

 spoke head

106

 external thread

111

 shank portion

121

 shank portion

131

 shank portion

140

 Pair

141

 shank portion

151

 shank portion

200

 bicycle

201

 Wheel

203

 frame

204

 fork

206

 handlebars

207

 saddle

208

 hub

210

 rim

240

 Pair

540

 angle

541

 The End

542

 The End

640

 angular arc

QUOTES INCLUDE IN THE DESCRIPTION

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

Cited patent literature

• DE 466866 [0003]

Claims (23)

Contraption ( 1 ) for the production of spokes ( 100 ), in particular for at least partially muscle-powered two-wheelers ( 200 ), with at least one forming device ( 2 ) for forming a wire material ( 3 ) comprising at least one on at least one processing section ( 13 ) of the wire material ( 3 ) acting mold ( 4 ) and at least one actuating device ( 5 ) for actuating the molding tool ( 4 ), characterized in that the molding tool ( 4 ) at least four tool units ( 14 . 24 . 34 . 44 ) and that the actuating device ( 5 ) is suitable and designed to handle the tool units ( 14 . 24 . 34 . 44 ) in pairs on the processing section ( 13 ) of the wire material ( 3 ) to have a shaping effect. Contraption ( 1 ) according to claim 1, wherein the actuating device ( 5 ) is suitable and designed to be a pair ( 140 . 240 ) consisting of two tool units each ( 14 . 24 . 34 . 44 ) at the same time. Contraption ( 1 ) according to one of the preceding claims, wherein the pair-operated tool units ( 14 . 24 . 34 . 44 ) are arranged opposite one another. Contraption ( 1 ) according to one of the preceding claims, wherein the actuating device ( 5 ) is suitable and designed at the same time at least one other pair ( 140 . 240 ) consisting of two tool units ( 14 . 24 . 34 . 44 ) not to have engaged. Contraption ( 1 ) according to the two preceding claims, wherein the actuating device ( 5 ) is suitable and adapted to the couples ( 140 . 240 ) to operate alternately. Contraption ( 1 ) according to one of the preceding claims, wherein the actuating device ( 5 ) is suitable and designed to handle the tool units ( 14 . 24 . 34 . 44 ) about a longitudinal axis ( 23 ) of the wire material ( 3 ) to turn. Contraption ( 1 ) according to one of the preceding claims, wherein the actuating device ( 5 ) at least one impact roller device ( 15 ) with a plurality of impact roller units ( 25 ). Contraption ( 1 ) according to the preceding claim, wherein the impact roller device ( 15 ) fixed impact roller units ( 25 ) and movable impact roller units ( 35 ). Contraption ( 1 ) according to the preceding claim, wherein a number of the movable impact roller units ( 35 ) is correlated with a number of the tool units and in particular equal to an integer multiple of the number of movable impact roller units ( 35 ) plus two equals. Contraption ( 1 ) according to one of the preceding claims, wherein the molding tool ( 4 ) is suitable and adapted to the wire material ( 3 ) by abrupt action of the tool units ( 14 . 24 . 34 . 44 ) and in particular a transverse dimension and / or a diameter ( 33 ) of the wire material ( 3 ) to reduce. Contraption ( 1 ) according to one of the preceding claims, wherein the actuating device ( 5 ) at least one adjusting device ( 6 ), which is suitable and designed, at least one characteristic measure ( 16 ) for forming. Contraption ( 1 ) according to the preceding claim, wherein the adjusting device ( 6 ) is suitable and designed for setting a Reduziermaßes. Contraption ( 1 ) according to one of the preceding claims, wherein the tool units ( 14 . 24 . 34 . 44 ) for forming the wire material ( 3 ) at least one head section ( 54 ) with an axially extending, shaping machining groove ( 64 ) exhibit. Contraption ( 1 ) according to the preceding claim, wherein the machining groove ( 64 ) is concave and extends over an angle arc ( 640 ) of more than 90 ° and in particular 120 °. Contraption ( 1 ) according to one of the two preceding claims, wherein the head section ( 54 ) extends ramp-shaped at least one axial end. Contraption ( 1 ) according to the preceding claim, wherein in the ramp-shaped head section ( 54 ) the circumferential length of the angle bend ( 640 ) increases. Contraption ( 1 ) according to one of the preceding claims, wherein the tool units ( 14 . 24 . 34 . 44 ) adjoin each other at least in sections and a closed circumference around the wire material to be processed ( 3 ) around. Contraption ( 1 ) according to one of the preceding claims, wherein the tool units ( 14 . 24 . 34 . 44 ) Page sections ( 74 ), along which they are arranged adjacent to each other and wherein the side sections ( 74 ) a tool unit ( 14 . 24 . 34 . 44 ) at an angle ( 540 ) of 90 ° to each other. Contraption ( 1 ) according to one of the preceding claims, wherein the tool units ( 14 . 24 . 34 . 44 ) are formed identically. Contraption ( 1 ) for the production of spokes ( 100 ), in particular for at least partially muscle-powered two-wheelers ( 200 ), with at least one forming device ( 2 ) for forming a wire material ( 3 ) comprising at least one on at least one processing section ( 13 ) of the wire material ( 3 ) acting mold ( 4 ) and at least one actuating device ( 5 ) for actuating the molding tool ( 4 ), characterized in that the molding tool ( 4 ) three tool units ( 14 . 24 . 34 ) and that the actuating device ( 5 ) is suitable and designed to hold the three tool units ( 14 . 24 . 34 ) together on the processing section ( 13 ) of the wire material ( 3 ) to have a shaping effect. Method for producing spokes ( 100 ), in particular for at least partially muscle-powered two-wheelers ( 200 ), wherein with at least one forming device ( 2 ) a wire material ( 3 ) and wherein with at least one mold ( 4 ) on at least one processing section ( 13 ) of the wire material ( 3 ) and the molding tool ( 4 ) with at least one actuating device ( 5 ), characterized in that at least four tool units ( 14 . 24 . 34 . 44 ) of the molding tool ( 4 ) and that with the tool units ( 14 . 24 . 34 . 44 ) in pairs on the processing section ( 13 ) of the wire material ( 3 ) is acted transforming. Method according to the preceding claim, wherein a pair ( 140 . 240 ) consisting of two tool units each ( 14 . 24 . 34 . 44 ) is operated at the same time. Method according to one of the two preceding claims, wherein at the same time another pair ( 140 . 240 ) consisting of two tool units ( 14 . 24 . 34 . 44 ) remains engaged unoperated.

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