EP3102349A1 - Nietstempel - Google Patents
NietstempelInfo
- Publication number
- EP3102349A1 EP3102349A1 EP14719510.1A EP14719510A EP3102349A1 EP 3102349 A1 EP3102349 A1 EP 3102349A1 EP 14719510 A EP14719510 A EP 14719510A EP 3102349 A1 EP3102349 A1 EP 3102349A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rivet
- state
- punch
- sensing device
- riveting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/10—Riveting machines
- B21J15/36—Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow rivets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/10—Riveting machines
- B21J15/14—Riveting machines specially adapted for riveting specific articles, e.g. brake lining machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/10—Riveting machines
- B21J15/28—Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups
Definitions
- the invention relates to a riveting punch for riveting a rivet at least in the vicinity of a torque transmission device.
- This torque transmission device may in particular be a clutch, a double clutch or a brake.
- the riveting punch comprises a body which extends along a longitudinal axis of the riveting punch, which is designed at least partially for engagement with the rivet and is designed at least partially for conducting power from the rivet to a sensing device.
- the invention relates to a system consisting of a drive train of a motor vehicle, a rivet for connecting two components, at least two components which are provided in the vicinity of this drive train and further a riveting punch, as described above.
- a corresponding method for riveting a rivet is included in the invention.
- riveting punches are also used when riveting clutches, such as friction clutches, double clutches and lever actuators.
- DE 32 24 404 C2 discloses a friction clutch and a method for its assembly.
- This publication discloses a friction clutch with a pressure plate acted upon by at least one energy storage in the direction of a drive plate, which is non-rotatably by means of leaf springs and a coupling component, such as a clutch housing, but hinged in achsrichtig displaceable, wherein the leaf springs are articulated via a fastening means on the pressure plate, in each of which a fastening means by opening the leaf springs protrudes, wherein the fastening means on the side facing away from the pressure plate of the leaf springs before the setting of a rivet already formed radial extension for holding the leaf springs and provided in a within the radial extent of the friction surface of the pressure plate Blind hole is anchored by at least a portion of a located in the blind hole pin-like portion is
- HSS material an alloyed tool steel with up to 2.06% carbon content and up to 30% content of alloying elements such as tungsten, molybdenum, vanadium, cobalt, nickel and titanium.
- the riveting punches used so far are made in a material that numerous disadvantages occur. So it often comes to incorrect measurements by touching the Nietstkovs with electrically conductive components, such as the riveting tool, which leads to an erroneous determination of the state after the riveting process. Such problems are exacerbated in particular if little space is available, since then increases the probability that the riveting in contact with adjacent components. The rivet then gets too early in contact with these components, such as a pressure plate, which leads to unwanted conditions, so that technically flawless components, such as double clutches, which have just been riveted, must be dismantled due to such an error again, although Instead of the faulty rivet training is actually a component that is in order.
- a riveting punch which has a body within the riveting punch, which can assume at least two states. In the first state of the body, a power line from the body to a sensor device is interrupted, while in a second state, the body is connected directly or indirectly to the sensor so that an electrical contact is produced, so that a current flows through the body can flow to the sensing device.
- the body can at least partially come into contact with the rivet and recognize a proper rivet or an improper rivet via electrical conductivity.
- Embodiment be designed so that it comprises a core which consists of an electrically conductive material, wherein in a contact between body and rivet, an electric current can flow through this core to the sensing device.
- This core can be ner in particular pressure-resistant, electrically insulating cover layer at least partially, preferably at least in rivet near end of the body to be surrounded.
- the core may for example consist of a metallic, electrically conductive material, or an electrically conductive ceramic material.
- the metallic material may be, for example, a steel alloy, in particular an HSS material.
- the insulating cover layer may have ceramic particles to increase its compressive strength, or may be formed entirely from a ceramic material, in this case an insulating. In this way it is possible to equip both areas, ie core and insulating cover layer, with similar pressure-resistant properties.
- a surmountable spacer element is provided, which in the first state makes electrical contact between the body and the sensing device or optionally between the core and the sensor device stops, and at least no longer prevents electrical contact in the second state, these states are reversibly converted into each other, that can be changed.
- the overcoming of the spacer is so reversible many times feasible.
- the spacer element is a spring element which is provided at a remote from the riet end of the body.
- a spring force exerts on the body in the direction of the hinge axis of the riveting punch.
- this spring force is so great that in the first state it separates the body electrically from the sensing unit or from elements correspondingly connected to the sensing device. This is made possible for example by the fact that there is a distance, that is, a separation of two elements involved in the conduction path between the body and the sensing device.
- the spring force of the spring element may in particular be set or a corresponding spring element may be selected such that an expansion or a compression of the spring element, which is sufficient to produce an electrical contact between body and sensing device, only above a force input in the form of a pressure is made possible on the body or the spring element. In this way, a secure detection of a proper or just not proper rivet can be achieved.
- the body in a preferred, simple embodiment of the riveting punch, provision is made for the body to have a contact surface remote from the rivet, which may be substantially perpendicular to the longitudinal axis of the riveting punch, and a contact surface corresponding therewith within the riveting punch in the region remote from the rivet, at least for connection to a sensing device is.
- This corresponding contact surface may in particular be part of a conductive connection part which can establish contact with the sensing device.
- the contact surfaces of each of the body and the connecting part by the spring or the spring force of the spring element spatially separated from each other, so that they are spaced apart and after overcoming the spring force, the contact surfaces abut each other so that it is a Current flow through the body or through the core of the body and the connection part can come to the sensing device.
- an electrical line from the rivet over the body of Nietstempels or over the core of Nietstkovs be achieved by the two contact surfaces and the connecting part to the sensing device.
- a drive train of a motor vehicle at least two components within this drive train, for example components of a double clutch, a clutch, a lever actuator or a dual mass flywheel and a rivet, which is to connect these two components and the riveting tool according to the invention for riveting the Rivets a corresponding system is formed.
- the object of the invention is achieved by a method in which a riveting punch according to the invention is used to at least check a connection of at least two components.
- a riveting punch according to the invention is used to at least check a connection of at least two components.
- the riveting tool according to the invention with a connection supporting at least rivet is brought into connection.
- Figure 2 is a longitudinal section of the riveting punch of Figure 1, wherein the riveting punch is in abutment with a rivet, and Figure 3 shows a detail in the foot of the riveting punch.
- FIG. 1 shows an embodiment of a riveting punch 1 according to the invention for riveting a rivet 2 of a coupling, such as a double clutch 3.
- the riveting punch 1 can also be used when riveting a lever actuator or a dual-mass flywheel.
- the riveting punch 1 is elongate and extends along a longitudinal axis 4. Its body 5 is at least partially surrounded by insulating sections 8 within the riveting punch 1.
- the body 5 itself is electrically conductive.
- the body 5 itself may be substantially insulating, optionally with an electrically insulating cover layer, and having an electrically conductive core which extends completely through the longitudinal axis 4.
- the core may consist of a metallic conductive material and the insulating cover layer of an insulating ceramic material.
- an insulation end piece (not shown here) can be provided which protects the core region of the body 5 from undesired contact. Care should be taken here that this insulation end piece and the core of the body 5 consist of similar materials, preferably with the same or at least similar modulus of elasticity. For example, it is possible to use as the insulation end piece a non-conductive ceramic having the same modulus of elasticity as a conductive ceramic selected as the core of the body 5.
- no contact, at least on the body 5 with force acting contact between the body 5 and the rivet 2 is given at the nietnahen end 9 of the riveting punch 1.
- At nietfernen end 1 1 of the body 5 is located on the body 5, a contact surface 6, which a corresponding contact surface 7 of a connecting part 12th opposite.
- the connection part 12 itself is conductively connected to a sensing device 14, as shown in FIG. Due to a spring element 10 in the connection part 12, the contact surfaces 6 of the body 5 and 7 of the connection part 12 are spaced apart from each other and have a distance 19.
- the body 5 is also enclosed in the remote area, ie at the remote end 1 1, by an insulating section 8, while the connection part 12 is provided in a cup-like isolation device 13.
- the spring force of the spring element 10 acts in the direction of the longitudinal axis 4 to the rivet 2. If the body 5 is not yet subjected to force by the rivet 2, as shown here, the contact surfaces 6, 7 from the body 5 and connector 12 spaced from each other and an electrical contact between the body 5 and connector 12 and about an electrical contact between body. 5 and Sensing device 14 is not given.
- FIG. 2 shows the riveting punch 1 according to FIG. 1, whereby a force is applied to the body 5 by means of a contact force 18 via the rivet 2.
- the spring element 10 is pressed together with a sufficiently large contact pressure 18 in the direction of the arrow 20 against the spring force, whereby it comes to a conductive contact of the contact surfaces 6 and 7 of the body 5 and connector 12. In this way, a current in the direction of arrow 16 through rivet 2, body 5 and connector 12 in the direction of sensing device 14 flow.
- the sensing device 14 is in contact with the connection part 12.
- the situation is illustrated that the body 5 has been subjected to force by the rivet 2 and the spring element 10 has been pressed into the connection part 12 such that the contact surfaces 6, 7 of FIG Body 5 and connector 12 are on top of each other.
- An electrical contact between body 5 and connector 12 and thus an electrical line to the sensing device 14 is given here and it can flow from the rivet 2 via the body 5 in the direction of arrow 16 to the connector 12 and here in the direction 17 to the sensing device 14 ,
- the sensing device 14 is surrounded by a corresponding insulating ring 15.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/DE2014/200034 WO2015113531A1 (de) | 2014-02-03 | 2014-02-03 | Nietstempel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3102349A1 true EP3102349A1 (de) | 2016-12-14 |
| EP3102349B1 EP3102349B1 (de) | 2017-11-15 |
Family
ID=50555029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14719510.1A Active EP3102349B1 (de) | 2014-02-03 | 2014-02-03 | Nietstempel |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3102349B1 (de) |
| WO (1) | WO2015113531A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110365074B (zh) | 2016-09-20 | 2022-02-11 | 华为技术有限公司 | 一种电池、终端以及充电系统 |
| DE102017200087A1 (de) * | 2016-12-30 | 2018-07-05 | Robert Bosch Gmbh | Mundstück |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB483663A (en) * | 1936-10-22 | 1938-04-22 | Becker Emil | Improvements in or relating to flush or counter-sunk riveting |
| DE3224404A1 (de) | 1982-06-30 | 1984-01-05 | LuK Lamellen und Kupplungsbau GmbH, 7580 Bühl | Reibungskupplung sowie verfahren zu deren montage |
| DE102012221532B4 (de) * | 2011-12-09 | 2019-05-02 | Schaeffler Technologies AG & Co. KG | Keramiknietstempel mit leitendem Kern |
-
2014
- 2014-02-03 EP EP14719510.1A patent/EP3102349B1/de active Active
- 2014-02-03 WO PCT/DE2014/200034 patent/WO2015113531A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015113531A1 (de) | 2015-08-06 |
| EP3102349B1 (de) | 2017-11-15 |
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