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Structure and function of the security coupling

Structure and function of the security coupling
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Structure and function of the security coupling

Product catalog summary
Standardized Options
HA-CO offers a variety of standardized options to enhance construction flexibility. These options include keyway DIN 6885, balanced versions per DIN ISO 1940-1, and high-temperature lubricants up to 250°C. Special labeling and ATEX versions are also available, and customers must specify desired options in their orders.
Product Naming and Modifications
Product names can be modified with prefixes or suffixes for specific needs, such as ATEX certification. High rotational speeds are achieved through precise construction and quality manufacturing.
Importance of Safety Couplings
Safety couplings prevent production downtime and damage by disconnecting the drive from the machine during collisions. They are used in machine tools, industrial robots, and transport systems.
Structure and Function of Safety Couplings
FHW series safety couplings are spring-loaded, providing backlash-free torque transmission and protecting machines from overload. They automatically re-engage after repairs.
Adjustment of Disengagement Torque
Couplings are factory-set to customer-specified disengagement torque but can be adjusted by rotating the nut within a specified range.
Dimensioning
Safety couplings are designed based on required disengagement torque, which must exceed operational torque. Calculations are provided for proper dimensioning.
Overview of Indirect and Direct Drives
Indirect drives have non-aligned central axes, while direct drives have aligned input and output shafts. Safety couplings for indirect drives feature a mounting flange, and direct drives require a compensation element for misalignment.
Compensation Elements
Direct drives use metal bellow or elastomer couplings, suitable for various applications, providing accurate and backlash-free torque transmission.
Comparison of Coupling Types
Couplings are compared based on torsional stiffness, temperature resistance, and speed capabilities. Metal bellows offer high stiffness and resistance, while elastomer couplings provide vibration damping.
Sizing and Assembly
Couplings should be sized based on maximum torque, considering peak values. Assembly requires ensuring shaft misalignments do not exceed permissible values.
Applications
Couplings are used in industries like mechanical engineering, metrology, and aviation due to their wear-free and maintenance-free nature.
Specifications
The document emphasizes fit tolerance, with couplings typically supplied with bore-quality H7. Custom bore tolerances and keyways are available upon request.
Product Range
HA-CO offers various couplings, including metal bellows, elastomer, dog clutches, and miniature couplings. They also provide distance couplings for torque transmission over distances up to six meters.
Line Shafts Description
Line shafts bridge axial distances up to 6 meters, featuring a customizable intermediate tube for specific applications.
Performance Features
HA-CO line shafts offer backlash-free torque transfer, high torsional stiffness, ease of installation, stainless steel construction, maintenance-free operation, and high-speed capability.
Rotational Speed
Diagrams are provided to determine permissible rotational speed in relation to shaft length for materials like aluminum, steel, stainless steel, and CFK line shafts.
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Catalog excerpts

Structure and function of the security coupling-1

Legende der standardisierten Optionen Explanation of standardized options Für eine maximale Flexibilität in Ihrem Konstruktionsalltag bietet HA-CO eine Auswahl an standardisierten Optionen. Durch die Vielseitigkeit der Baureihen sind je nach Typ unterschiedliche Optionen verfügbar. Dargestellt werden diese Optionen mit den untenstehenden Piktogrammen in den Produktmerkmalen. HA-CO offers you a choice of standard options to maintain a high flexiblity on your daily construction. Depending on the product group many different options are available. This options are indicated by the listed icons below which you can find in the characteristics on each product page. Erhältlich mit Passfedernut nach DIN 6885 Available with keyway DIN 6885 Beschriftet mit Kundenreferenznummer Labeled with customer reference number Toleranz der standardmäßigen DIN 6885 / JS9 Passfedernut änderbar Tolerance of the standardized DIN 6885 / JS9 keyway changeable Sonderbeschriftung inkl. Kundenlogo (Zeichnung erforderlich) Special labeling incl. customer logo (drawing required) Ausgewuchtet erhältlich (DIN ISO 1940-1) Balanced available (DIN ISO 1940-1) Erhältlich in ATEX Ausführung (II 2 G Ex h c T6 … T3 Gb ) Available as ATEX version (II 2 G Ex h c T6 … T3 Gb ) Erhältlich mit Schmiermittel für Hochtemperaturanwendungen bis 250°C Available with lubricant for high temperature applications up to 250° C Gewünschte Optionen müssen im Bestelltext angeben und ausführlich beschrieben werden. Please mention and describe the required options detailed in your order. Abkürzungen: Ausrastmoment: Anzugsmoment der Schrauben: Disengagement torque: Tightening torque of screws: The HA-CO Product Names Unsere Produktbezeichnungen sind auf den jeweiligen Katalogseiten ersichtlich. Durch gewünschte Modifikationen werden die Bezeichnungen mit vor- oder nachgesetzten Kürzeln erweitert: Our product names can be visible at the respective catalog pages. According the required modifications a pre- or suffix will be extended to the product names: Ausführung ATEX mit spezieller Laserbeschriftung ggf. adaptierte Zeichnung Beispiel: FHW-PLA-160-ATEX Implementation according to ATEX certification with additional laser marking. If required with adaptive drawing E.g: FHW-PLA-160-ATEX Sonderkupplungen (zwingend mit separater Zeichnung) sind, ausgehend von der Ursprungsbaureihe, mit einem vorstehenden S gekennzeichnet. Beispiel: S-FHW-SBK-400 Special couplings (separate drawing mandatory) are marked with the prefix S. Special coupling are always adapted from a standardised coupling E.g: S-FHW-SBK-400 Drehzahlen Der Forderung der Industrie nach immer höheren Geschwindigkeiten und Drehzahlen wird durch eine zweckgemäße Konstruktion erreicht. Rotationssymmetrische Bauteile und eine exzellente Qualitätsfertigung gewährleisten diese Forderungen ohne besondere Nacharbeiten. Höchstdrehzahlen können auf Kundenwunsch jederzeit durch dynamische Wuchtverfahren in allen Wuchtgüten zusätzlich ausgeführt werden. Rotational speed (rpm) In order to reach the industry requests for increasing and rotational speeds and velocities a suitable construction has to be deployed. Rotationally symmetrical components and an excellent quality production ensure these demands without additional rework. According to the customers request high rotational speed can be performed in all balancing qualities. © by HA-CO GmbH • Phone +49 6022 65581

 Open the catalog to page 1
Structure and function of the security coupling-2

Warum Sicherheitskupplungen? Why safety couplings? Produktionsunterbrechungen bei hochwertigen Anlagen und lange Ausfallzeiten von Maschinen nach Kollisionen, sowie hohe Ersatzteilkosten sollten heute unter allen Umständen verhindert werden. Gerade in unserer Zeit des „Just-in-Time” müssen solche Betriebsstörungen, verursacht durch Programmierfehler, Fehlbedienungen usw. vermieden werden. Ebenso fordern ständig steigende Antriebsgeschwindigkeiten eine genauere Betrachtung der Sicherheitselemente einer Maschine bzw. einer Anlage. Nach dem physikalischen Gesetz E = 0,5 x m x v2 nimmt die Bewegungsenergie...

 Open the catalog to page 2
Structure and function of the security coupling-3

Die Sicherheitskupplungen der Reihe FHW sind federbelastete, formschlüssige Kupplungen, welche die Drehbewegung absolut spielfrei übertragen. Sie schützen die Maschine vor mechanischer Überlast. The coupling series FHW are spring-loaded, positive clutches with backlash free transmission of torque. They protect the machine from mechanical overload. Anpressscheibe clamping disc Anbauflansch mounted flange Näherungsschalter proximity switch Klemmnabe clamping hub Kupplungskörper clutch block Betriebszustand normal running Kollisionsfall case of a collision Spezial-Tellerfeder special disc spring...

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Structure and function of the security coupling-4

Einstellen des Ausrastmomentes bei Sicherheitskupplungen Adjustment of the disengagement torque by safety couplings Einstellbereich adjustment range Markierung mark The couplings are set to the disengagement torque specified by the customer at the factory. If it turns out that the release torque is too large or too small, it can be corrected. After loosening the locking screw(s) in the groove nut this is twisted with a spanner wrench. The rotation of the nut is only permitted within the adjustment range. Turning the nut too much the coupling could become blocked. Ausrastmoment (Federkraft) disengagement...

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Structure and function of the security coupling-5

Rated torque of coupling (Nm) Peak torque of the motor (Nm) After disengagement: Die Sicherheitskupplungen werden in der Regel nach dem erforderlichen Ausrückmoment ausgelegt. Dies muss über dem Moment liegen, welches für den regelmäßigen Betrieb der Anlage notwendig ist. Das Ausrückmoment der Sicherheitskupplungen wird in der Regel nach den Antriebsdaten bestimmt. Hierzu hat sich nebenstehende überschlägige Rechnung bewährt: The safety couplings are usually designed according to the required disengagement. This must be above the torque which is necessary for the regular operation of the plant....

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.