DE2533058A1 - Cast iron components for motor vehicle brakes - contain steel rods which reinforce highly stressed zones - Google Patents

Cast iron components for motor vehicle brakes - contain steel rods which reinforce highly stressed zones

Info

Publication number
DE2533058A1
DE2533058A1 DE19752533058 DE2533058A DE2533058A1 DE 2533058 A1 DE2533058 A1 DE 2533058A1 DE 19752533058 DE19752533058 DE 19752533058 DE 2533058 A DE2533058 A DE 2533058A DE 2533058 A1 DE2533058 A1 DE 2533058A1
Authority
DE
Germany
Prior art keywords
cast iron
highly stressed
steel rods
motor vehicle
vehicle brakes
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.)
Pending
Application number
DE19752533058
Other languages
German (de)
Inventor
Wilhelm Kamm
Werner Dipl Ing Keiner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Buderus AG
Original Assignee
BuderusSche Eisenwerke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BuderusSche Eisenwerke AG filed Critical BuderusSche Eisenwerke AG
Priority to DE19752533058 priority Critical patent/DE2533058A1/en
Publication of DE2533058A1 publication Critical patent/DE2533058A1/en
Pending legal-status Critical Current

Links

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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
    • F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/02—Casting in, on, or around objects which form part of the product for making reinforced articles
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0016—Brake calipers
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2250/00—Manufacturing; Assembly
    • F16D2250/0007—Casting
    • F16D2250/0015—Casting around inserts
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • F16D65/127—Discs; Drums for disc brakes characterised by properties of the disc surface; Discs lined with friction material

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

The tie rods or anchors with a high modulus of elasticity are inserted in the zone subjected to tensile stress, and are pref. steel bars inserted in the mould cavity prior to casting, esp. using bars bent at their ends and/or coated with a protective layer. The cast material shrinks onto the steel bars. Used e.g. for the brake housings for saddle brakes, where the housings are made of cast iron, but the cast iron is not strong enough for the highly stressed zones.

Description

Gegossenes Werkstück Die Erfindung bezieht sich auf ein gegossenes Werkstück mit auf Zug bzw. Biegung beanspruchten Partien. Damit ein solches Werkstück den gestellten Anforderungen entspricht, ist es zur Zeit üblich, die hochbelasteten Partien entweder besonders zu dimensionieren oder das ganze Werkstück aus einem hochwertigen Material herzustellen. In einzelnen Fällen werden sogar relativ teure und aufwendige Verbundkonstruktionen eingesetzt. Cast Workpiece The invention relates to a cast Workpiece with parts subjected to tension or bending. So that such a workpiece meets the requirements, it is currently common practice to use the highly stressed Parts either to be specially dimensioned or the entire workpiece from one to manufacture high quality material. In some cases they are even relatively expensive and complex composite structures are used.

Als Beispiel für ein solches Werkstück sei das Bremsgehäuse für eine Schwimmsattelbremse in Kraftfahrzeugen genannt. Da hier in den Stegen sehr hohe Biegemomente wirksam werden, ist es üblich, das Gehäuse aus einem hochwertigen Werkstoff (z.B. GGG) herzustellen, obwohl der Werkstoff GGL ausreichen und zu besseren Ergebnissen führen würde. Die Vorteile des GGL bestehen besonders in den besseren Dämpfungseigenschaften, der leichteren Bearbeitbarkeit und dem niedrigeren Preis.As an example of such a workpiece, consider the brake housing for a Called floating caliper brake in motor vehicles. Since here in the jetties very high Bending moments become effective, it is common for the housing to be made of a high-quality material (e.g. GGG), although the GGL material is sufficient and leads to better results would lead. The advantages of the GGL consist particularly in the better damping properties, easier machinability and lower price.

Es wurde bereits versucht, das Bremsgehäuse als Verbundwerkstück herzustellen, um an den entsprechenden Positionen den Werkstoff mit den jeweils günstigsten Eigenschaften zu haben. So wurden die Winkelteile mit den belasteten Stegen aus GTS, GGG oder Stahl und das Bremszylindergehäuse aus GGL hergestellt. Dabei war jedoch eine aufwendige Montage beider Teile notwendig, welche auch technisch nicht befriedigte.Attempts have already been made to manufacture the brake housing as a composite workpiece, to find the material with the most favorable properties at the appropriate positions to have. So the angle parts with the loaded webs made of GTS, GGG or Steel and the brake cylinder housing made of GGL. However, it was a laborious one Assembly of both parts necessary, which was also not technically satisfactory.

Damit Werkstücke aus einem geeigneten Gußwerkstoff hergestellt werden können, dessen Festigkeit nur für einige hochbelastete Partien nicht ausreicht, wird gemäß der Erfindung vorgeschlagen, in die Zugzone Zuganker mit einem hohen Elastizitätsmodul einzufügen.So that workpieces can be made from a suitable cast material whose strength is insufficient for some highly stressed areas, is proposed according to the invention, in the tension zone tie rod with a high modulus of elasticity.

b Als solche Zuganker kommen vor allem Stahlstärke in Frage, welche vor dem Gießen in den Formhohlraum einzufügen sind. b As such tie rods, steel thicknesses come into question, which ones are to be inserted into the mold cavity prior to casting.

Infolge seiner Schwindung schrumpft der Gußwerkstoff auf die Stahlstäbe auf, was zu einer guten Verbindung und Kraftübertragung führt. Durch Umbiegen oder Einkerben der Enden der Stahlstäbe wird die Verbindung noch verbessert. Damit die Bildung von Blaslunkern durch die Stahlstäbe vermieden wird, empfiehlt es sich, die Stäbe vorher zu verkupfern oder zu verzinnen.As a result of its shrinkage, the cast material shrinks onto the steel rods resulting in a good connection and power transmission. By bending or Notching the ends of the steel bars improves the connection. So that The formation of blowholes through the steel rods is avoided, it is advisable to to copper-plate or tin-plate the bars beforehand.

In vielen Fällen werden zufriedenstellende Ergebnisse erzielt, wenn die Stahlstäbe in den beanspruchten Partien liegen, d.h.In many cases, satisfactory results will be obtained if the steel bars lie in the stressed areas, i.e.

wenn sie von dem Gußwerkstoff vollständig umgeben werden.when they are completely surrounded by the cast material.

Es gibt auch Werkstücke, bei denen es nicht möglich ist, die Stäbe ganz einzubetten. Hier können die Stäbe außerhalb der beanspruchten. Partien liegen. Sie dienen dann als freie Zuganker, welche mit ihren Enden in das Werkstück eingreifen.There are also workpieces where it is not possible to use the rods to embed completely. Here the rods can outside of the claimed. Lots are lying. They then serve as free tie rods, which engage with their ends in the workpiece.

Verbundgußstücke, z.B. aus Stahl und Gußeisen, sind bekannt.Composite castings such as steel and cast iron are known.

Dabei hat der Stahl aber in erster Linie eine verbindende Funktion. Aus der DT-PS 748 O65 ist es auch schon bekannt, ein Netallformstück mit anderem Elastizitätsmodul einzugießen.But the steel primarily has a connecting function. From the DT-PS 748 O65 it is already known to use a Netall fitting with another Pour in the modulus of elasticity.

Dadurch soll aber eine über den Gesamtquerschnitt des Werkstückes gleichförmige Kraftliniendichte und damit eine erhöhte Dauerfestigkeit erzielt werden. Es war nicht daran gedacht, durch das Metallformstück Zugkräfte aufzufangen.However, this is intended to cover the entire cross-section of the workpiece Uniform force line density and thus increased fatigue strength can be achieved. It was not intended to use the metal fitting to absorb tensile forces.

Der Erfindung dürfte die Verwendung von Eisenarmierungen bei Stahlbeton am nächsten kommen. Dabei handelt es sich aber um einen völlig anderen Arbeitsbereich. Zudem werden dort große Flächen armiert, die infolge ihres Eigengewichtes durchbrechen könnten. Es handelt sich nicht um Einzelwerkstücke mit Partien die auf Zug oder Biegung beansprucht werden.The invention is likely to include the use of iron reinforcements in reinforced concrete come closest. But this is a completely different area of work. In addition, there will be big ones Reinforced surfaces, which due to their own weight could break through. It is not a question of individual workpieces with parts that be subjected to tension or bending.

Nähere Einzelheiten sind aus der beigefügten Zeichnung zu entnehmen, die ein Bremsgehäuse für eine Schwimmsattelbremse von Kraftfahrzeugen als Ausführungsbeispiel darstellt.Further details can be found in the attached drawing, the a brake housing for a floating caliper brake of motor vehicles as an embodiment represents.

Es zeigt: Fig. 1: Ein Bremsgehäuse in der Draufsicht und Fig. 2: Den Schnitt A-A aus Fig. 1.It shows: FIG. 1: A brake housing in plan view and FIG. 2: The Section A-A from Fig. 1.

Das Bremsgehäuse besteht aus einem Bremszylindergehäuse 1 und einem Winkelteil 2, welche über Stege 3 mit einander verbunden sind. Die Hauptbelastungsrichtung erstreckt sich in Richtung der Pfeile in Fig. 2, sodaß die Stege 3 auf Biegung beansprucht werden. Die Zugzone ist demgemäß im oberen Teil der Stege. In diese Zugzone sind Stahlstäbe (Baustahl) 4 eingefügt, welche die Festigkeitswerte des gesamten Teiles wesentlich erhöhen.The brake housing consists of a brake cylinder housing 1 and a Angle part 2, which are connected to one another via webs 3. The main direction of exposure extends in the direction of the arrows in Fig. 2, so that the webs 3 are subject to bending will. The tension zone is accordingly in the upper part of the webs. Are in this tension zone Steel bars (structural steel) 4 inserted, which the strength values of the entire part increase significantly.

In der Fertigung wird es sich empfehlen, jeweils zwei Gehäuse stirnseitig nebeneinander abzuformen. Es kann dann ein gemeinsamer Stahlstab für beide Gehäuse verwandt werden der auf dem Sandballen dazwischen gelagert ist. Der Stab muß später an den Stirnseiten der Gehäuse abgetrennt werden.In production, it is advisable to have two housings at each end to be taken side by side. There can then be a common steel rod for both housings be used which is stored on the sand ball in between. The staff must be later be cut off at the front of the housing.

Claims (5)

PatentansprücheClaims 1. Gegossenes Werkstück mit auf Zug bzw. Biegung beanspruchten Partien, gekennzeichnet durch in die Zugzone eingefügte Zuganker mit hohem Elastizitätsmodul.1. Cast workpiece with parts subjected to tension or bending, characterized by tie rods with a high modulus of elasticity inserted into the tension zone. 2. Werkstück nach Anspruch 1, dadurch gekennzeichnet, daß als Zuganker vor dem Gießen in den Formhohlraum einzufügende Stahlstäbe dienen.2. Workpiece according to claim 1, characterized in that as a tie rod Steel rods to be inserted into the mold cavity prior to casting are used. 3. Werkstücknach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die Stahlstäbe an ihren Enden umgebogen sind.3. workpiece according to claims 1 and 2, characterized in that the steel bars are bent at their ends. 4. Werkstück nach den Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Stahlstäbe mit einer Schutzschicht umgeben sind.4. Workpiece according to claims 1 to 3, characterized in that the steel bars are surrounded with a protective layer. 5. Werkstück nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß der Gußwerkstoff infolge seiner Schwindung auf die Stahlstäbe aufgeschrumpft ist.5. Workpiece according to claims 1 to 4, characterized in that that the cast material is shrunk onto the steel rods as a result of its shrinkage is.
DE19752533058 1975-07-24 1975-07-24 Cast iron components for motor vehicle brakes - contain steel rods which reinforce highly stressed zones Pending DE2533058A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752533058 DE2533058A1 (en) 1975-07-24 1975-07-24 Cast iron components for motor vehicle brakes - contain steel rods which reinforce highly stressed zones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752533058 DE2533058A1 (en) 1975-07-24 1975-07-24 Cast iron components for motor vehicle brakes - contain steel rods which reinforce highly stressed zones

Publications (1)

Publication Number Publication Date
DE2533058A1 true DE2533058A1 (en) 1977-02-10

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DE19752533058 Pending DE2533058A1 (en) 1975-07-24 1975-07-24 Cast iron components for motor vehicle brakes - contain steel rods which reinforce highly stressed zones

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2950660A1 (en) * 1979-12-15 1981-07-02 Alfred Teves Gmbh, 6000 Frankfurt Disc brake calliper assembly - has heavily-stressed portions made of material with high modulus of elasticity
FR2486198A1 (en) * 1980-07-07 1982-01-08 Teves Gmbh Alfred MOLDED PIECE FOR FLEXION SOLICITATION, IN PARTICULAR A DISC BRAKE CALIPER
FR2668403A1 (en) * 1990-10-30 1992-04-30 Peugeot METALLIC INSERT FOR CASTING IN INTERNAL COMBUSTION ENGINE HEAD.
WO1992017712A1 (en) * 1991-04-04 1992-10-15 Alfred Teves Gmbh Floating caliper, partial lining disk brake with a light metal brake housing
DE4420652A1 (en) * 1993-06-18 1994-12-22 Budd Co Calliper for a disc brake
DE4332744A1 (en) * 1993-09-25 1995-03-30 Friatec Rheinhuette Gmbh & Co Method for casting shaped parts
GB2453655A (en) * 2007-10-08 2009-04-15 Duraloc Ltd Cast and reinforced ISO container corner fitting
DE102008038035A1 (en) 2008-08-16 2010-02-18 Dr.Ing.H.C.F.Porsche Aktiengesellschaft Brake caliper and related manufacturing process
DE102006043855B4 (en) * 2006-09-19 2010-05-20 Audi Ag Composite casting and method of making a composite casting
DE102013212165A1 (en) * 2013-06-26 2014-12-31 Volkswagen Aktiengesellschaft cast housing
WO2015055745A2 (en) * 2013-10-18 2015-04-23 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Casting process and casting mould for producing a brake caliper

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2950660A1 (en) * 1979-12-15 1981-07-02 Alfred Teves Gmbh, 6000 Frankfurt Disc brake calliper assembly - has heavily-stressed portions made of material with high modulus of elasticity
FR2486198A1 (en) * 1980-07-07 1982-01-08 Teves Gmbh Alfred MOLDED PIECE FOR FLEXION SOLICITATION, IN PARTICULAR A DISC BRAKE CALIPER
DE3025636A1 (en) * 1980-07-07 1982-02-04 Alfred Teves Gmbh, 6000 Frankfurt MOLDED WORKPIECE
FR2668403A1 (en) * 1990-10-30 1992-04-30 Peugeot METALLIC INSERT FOR CASTING IN INTERNAL COMBUSTION ENGINE HEAD.
EP0484197A1 (en) * 1990-10-30 1992-05-06 Automobiles Peugeot Cylinder head of an internal combustion engine with cast metallic insert
WO1992017712A1 (en) * 1991-04-04 1992-10-15 Alfred Teves Gmbh Floating caliper, partial lining disk brake with a light metal brake housing
DE4420652A1 (en) * 1993-06-18 1994-12-22 Budd Co Calliper for a disc brake
DE4332744A1 (en) * 1993-09-25 1995-03-30 Friatec Rheinhuette Gmbh & Co Method for casting shaped parts
DE102006043855B4 (en) * 2006-09-19 2010-05-20 Audi Ag Composite casting and method of making a composite casting
GB2453655A (en) * 2007-10-08 2009-04-15 Duraloc Ltd Cast and reinforced ISO container corner fitting
GB2453655B (en) * 2007-10-08 2010-08-18 Duraloc Ltd Reinforced metal casting
US8066134B2 (en) 2007-10-08 2011-11-29 Duraloc Limited Reinforced metal casting
DE102008038035A1 (en) 2008-08-16 2010-02-18 Dr.Ing.H.C.F.Porsche Aktiengesellschaft Brake caliper and related manufacturing process
US8336681B2 (en) 2008-08-16 2012-12-25 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Brake caliper and associated production method
DE102013212165A1 (en) * 2013-06-26 2014-12-31 Volkswagen Aktiengesellschaft cast housing
WO2015055745A2 (en) * 2013-10-18 2015-04-23 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Casting process and casting mould for producing a brake caliper
WO2015055745A3 (en) * 2013-10-18 2015-09-24 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Casting process and casting mould for producing a brake caliper

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