DE102004002968B3 - nut thread - Google Patents
nut thread Download PDFInfo
- Publication number
- DE102004002968B3 DE102004002968B3 DE200410002968 DE102004002968A DE102004002968B3 DE 102004002968 B3 DE102004002968 B3 DE 102004002968B3 DE 200410002968 DE200410002968 DE 200410002968 DE 102004002968 A DE102004002968 A DE 102004002968A DE 102004002968 B3 DE102004002968 B3 DE 102004002968B3
- Authority
- DE
- Germany
- Prior art keywords
- thread
- length
- nut
- threads
- uncompressed
- 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.)
- Expired - Fee Related
Links
- 239000000463 material Substances 0.000 claims abstract description 20
- 238000003860 storage Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 abstract description 4
- 238000005520 cutting process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/02—Shape of thread; Special thread-forms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/16—Thread cutting; Automatic machines specially designed therefor in holes of workpieces by taps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G2210/00—Details of threads produced
- B23G2210/24—Threads having a variable pitch
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G2240/00—Details of equipment for threading other than threading tools, details of the threading process
- B23G2240/36—Methods of threading not otherwise provided for
Abstract
Die Erfindung betrifft ein Muttergewinde mit Gewindegängen (13) mit bereichsweise verdichtetem und unverdichtetem Gewindematerial in einem Kraftfahrzeug-Bauteil. Um das Muttergewinde für dynamische und statische Belastung auszulegen, weist eine erste Gewindelänge (9) verdichtetes Gewindematerial und eine zweite Gewindelänge (10) unverdichtetes Gewindematerial auf.The invention relates to a nut thread with threads (13) with partially compressed and uncompressed thread material in a motor vehicle component. In order to design the nut thread for dynamic and static loading, a first thread length (9) has compacted thread material and a second thread length (10) has uncompressed thread material.
Description
Die Erfindung betrifft ein Muttergewinde nach dem Oberbegriff des Anspruchs 1.The The invention relates to a nut thread according to the preamble of the claim 1.
Bei Schraubenverbindungen übertragen sich in jedem Gewindegang Lasten entsprechend den lokalen Steifigkeiten. Dabei liegt die höchste Belastung im Schraubengewinde im letzten Gewindegrund, der gerade nicht mehr im Muttergewinde ist, da sich dort alle Kräfte aus allen Gewindeflanken zur Gesamtschraubenkraft aufsummieren und die dortige, den Gewindegrund bildende Kerbe lokal einen Ausgangspunkt einer Rissbildung darstellt. Bei einem Muttergewinde in einem Bauteil wird die Schraubenkraft in das Bauteil mit dem Muttergewinde übertragen und muss lokal mit den Gewindekerben ertragen werden.at Transfer screw connections in each thread loads according to the local stiffnesses. This is the highest Load in the screw thread in the last thread root, the straight is no longer in the nut thread, since there all forces out sum all thread flanks to the total screw force and the There local, the thread forming notch locally a starting point represents a cracking. For a female thread in a component the screw force is transmitted to the component with the nut thread and must be endured locally with the thread scores.
Aus
der
Der Erfindung liegt die Aufgabe zugrunde, ein Muttergewinde in einem Kraftfahrzeug-Bauteil anzugeben, das für dynamische und statische Belastungen ausgelegt und besonders als Befestigungsgewinde geeignet ist.Of the Invention is based on the object, a female thread in one Vehicle component to be specified for dynamic and static Loads designed and especially suitable as a mounting thread is.
Die Aufgabe wird erfindungsgemäß durch die Merkmale der Ansprüche 1 und 2 gelöst. Günstige Ausgestaltungen und Vorteile der Erfindung sind der Beschreibung sowie den weiteren Ansprüchen zu entnehmen.The The object is achieved by the Features of the claims 1 and 2 solved. Cheap Embodiments and advantages of the invention are the description and the other claims refer to.
Bei
einem erfindungsgemäßen Muttergewinde
weist eine erste Gewindelänge
verdichtetes Gewindematerial und eine zweite Gewindelänge unverdichtetes
Gewindematerial auf, wobei die zweite Gewindelänge (
Ist die erste Gewindelänge wesentlich kürzer als die zweite Gewindelänge, kann der Kostenvorteil der konventionellen spanabhebenden bzw. schneidenden Gewindeherstellung ausgenutzt werden, während die aufwändig und teuer durch plastische Verformung hergestellte Gewindelänge auf einen minimal notwendigen Bereich beschränkt sein kann. So kann es ausreichend sein, nur wenige Gewindegänge durch plastische Verformung zu bilden. Vorzugsweise ist das verdichtete Gewindematerial durch Furchen erzeugt. Ein wesentlicher Kostenaspekt dieses Verfahrens betrifft die hohen Werkzeugkosten, da insbesondere die Standzeit der Werkzeuge gering ist. Durch die Kombination von verdichteten und unverdichteten Gewindelängen in dem erfindungs gemäßen Muttergewinde wird der Einsatz des Furchwerkzeugs nur für kurze Gewindelängen notwendig, so dass dessen Abnutzung verringert und die Standzeit verbessert werden kann.is the first thread length much shorter than the second thread length, Can the cost advantage of conventional cutting or cutting Thread production can be exploited while the laborious and expensive threaded length produced by plastic deformation may be limited to a minimum necessary area. That's enough be, only a few threads to form by plastic deformation. Preferably, the compacted Thread material generated by furrows. An essential cost aspect of this process concerns the high tool costs, in particular the service life the tools is low. By the combination of compacted and uncompressed thread lengths in the fiction, contemporary mother thread the use of the furrowing tool is only necessary for short thread lengths, so that its wear is reduced and the service life improved can.
Ist bei einer einseitig geschlossenen Ausgestaltung die erste Gewindelänge im Bereich des geschlossenen Endes angeordnet, kann die plastische Verformung auf die wenigen dynamisch am höchsten belasteten Gewindegänge beschränkt werden, während das restliche Gewinde konventionell durch spanabhebende Bearbeitung bzw. Schneiden kostengünstig hergestellt werden kann.is in a closed-sided embodiment, the first thread length in the range arranged the closed end, the plastic deformation on the few dynamically most heavily loaded threads limited be while the remaining thread conventional by machining or cutting cost can be produced.
Bevorzugt ist die Verwendung des Muttergewindes als Befestigungsgewinde in einem Kurbelgehäuse und/oder in einem Lagerdeckel und/oder zum Befestigen eines Lagerdeckels auf einem Lagersattel eines Pleuels mit geteiltem Lager.Prefers is the use of the nut thread as a fastening thread in a crankcase and / or in a bearing cap and / or for securing a bearing cap on a bearing saddle of a connecting rod with split bearing.
Im folgenden wird die Erfindung anhand eines in der Zeichnung beschriebenen Ausführungsbeispiels näher erläutert. Die Zeichnung, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination, die der Fachmann zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen wird.in the Following is the invention with reference to a described in the drawing embodiment explained in more detail. The The drawing, the description and the claims contain numerous features in combination, which the skilled person expediently consider individually and sum up to meaningful further combinations.
Dabei zeigen:there demonstrate:
Der
in der
Eine
erste Gewindelänge
Gewindeflanke
Die
zweite Gewindelänge
Claims (7)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410002968 DE102004002968B3 (en) | 2004-01-21 | 2004-01-21 | nut thread |
PCT/EP2004/014704 WO2005071275A1 (en) | 2004-01-21 | 2004-12-24 | Nut thread |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410002968 DE102004002968B3 (en) | 2004-01-21 | 2004-01-21 | nut thread |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004002968B3 true DE102004002968B3 (en) | 2005-11-10 |
Family
ID=34800844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410002968 Expired - Fee Related DE102004002968B3 (en) | 2004-01-21 | 2004-01-21 | nut thread |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102004002968B3 (en) |
WO (1) | WO2005071275A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7922782U1 (en) * | 1979-08-09 | 1979-11-29 | Gretsch-Unitas Gmbh Baubeschlagfabrik, 7257 Ditzingen | COMBINED TOOL FOR DRILLING AND THREAD FORMING |
DE3419850A1 (en) * | 1984-05-28 | 1985-11-28 | Süddeutsches Präzisionswerk GmbH & Co, 7340 Geislingen | Internal-thread cutting tool |
DE3537087A1 (en) * | 1985-10-18 | 1987-04-23 | Helmut Hofmann | Tap for cutting or chip-free machining thread in holes - in which thread run out of last threads lies outsides envelope of thread core diameters |
WO1997032682A1 (en) * | 1996-03-08 | 1997-09-12 | Sandvik Aktiebolag | Thread-producing tool |
DE19649190A1 (en) * | 1996-11-27 | 1998-05-28 | Bayerische Motoren Werke Ag | Strengthened thread production using cutting and grooving tool |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1912517A (en) * | 1929-03-28 | 1933-06-06 | Roy H Smith | Means for threading nut blanks |
GB2074280A (en) * | 1980-04-02 | 1981-10-28 | Sparling L G M | Screw Thread Fasteners |
-
2004
- 2004-01-21 DE DE200410002968 patent/DE102004002968B3/en not_active Expired - Fee Related
- 2004-12-24 WO PCT/EP2004/014704 patent/WO2005071275A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7922782U1 (en) * | 1979-08-09 | 1979-11-29 | Gretsch-Unitas Gmbh Baubeschlagfabrik, 7257 Ditzingen | COMBINED TOOL FOR DRILLING AND THREAD FORMING |
DE3419850A1 (en) * | 1984-05-28 | 1985-11-28 | Süddeutsches Präzisionswerk GmbH & Co, 7340 Geislingen | Internal-thread cutting tool |
DE3537087A1 (en) * | 1985-10-18 | 1987-04-23 | Helmut Hofmann | Tap for cutting or chip-free machining thread in holes - in which thread run out of last threads lies outsides envelope of thread core diameters |
WO1997032682A1 (en) * | 1996-03-08 | 1997-09-12 | Sandvik Aktiebolag | Thread-producing tool |
DE19649190A1 (en) * | 1996-11-27 | 1998-05-28 | Bayerische Motoren Werke Ag | Strengthened thread production using cutting and grooving tool |
Non-Patent Citations (2)
Title |
---|
"Gleitend gedrückt-Werkzeug zum Gewindefurchen", in: Maschinenmarkt 94(1988) 43 S. 48 * |
BENZ,W.: "Hochwertige Schrauben und Schrauben- verbindungen im Motorenbau", in: Konstruktion, 7 Jg., 1955 H5 S 175-184 * |
Also Published As
Publication number | Publication date |
---|---|
WO2005071275A1 (en) | 2005-08-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of the examined application without publication of unexamined application | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLERCHRYSLER AG, 70327 STUTTGART, DE |
|
8339 | Ceased/non-payment of the annual fee |