Drive elements - The force- and motion-transmitting elements
So that machines or parts of machines and systems move or "move something", so-called drive elements are required. These are used for the transmission of movement or power (drive technology). Naturally, these parts are subject to high demands and heavy wear. This makes it all the more important that the drive elements are made of high-quality materials, expertly manufactured and durable. The most common elements include gear racks, chain wheels, couplings, V-belt pulleys, gearboxes, bearings and gear wheels. Mechanical special drive elements up to a length of 3,500 mm and a diameter of up to 1,200 mm can be specially manufactured by almost all common manufacturers on customer request.
Lifting gear units
Lifting gear units convert rotary movements into axial movements. An integrated worm shaft is driven by an electric motor. This in turn sets a worm wheel in rotary motion. Drives in the form of lifting systems are used in automated assembly and production facilities.
A coupling connects two shafts rigidly, detachably, movably or elastically. A non-rigid coupling can be either a non-positive or positive connection. The most commonly used couplings are those that are electromagnetically operated. Examples of this are e-magnetic clutches, pole friction clutches and tooth clutches. Bolt couplings and claw couplings belong to the elastic coupling variants. Highly elastic couplings would be flange couplings. Rigid shaft couplings are also available. Torsionally stiff couplings are curved tooth couplings, servo couplings and steel lamina couplings.
Gears are among the most frequently required drive elements. Designs, variants and models are available in a large selection (butted, milled, ground, helix angle up to 45 degrees, gearing qualities according to DIN, process-safe, etc.).
A rack used to be used for the stepwise height adjustment of suspensions of pots over open fire. After industrialisation, racks were used to convert a rotary movement into a linear one. The rack consists of a straight element with teeth that mesh with a gear wheel. Fields of application for this drive technology would be the rack railway, steering gears or weirs. A distinction is made between square and round, wide and narrow racks. Gear racks are available in steel or stainless steel versions.
Sprockets are used to transmit large forces. The fields of application are plant and mechanical engineering. These are used in milled or butted versions. Due to the high requirements, quality counts twice as much. Tolerances are important for individual solutions to achieve the best result.
V-belt pulleys - grooved pulley or V-pulley
V-belt pulleys is the connection of one shaft to another by means of a V-belt. This machine element is one of the essential components of the V-belt drive. This drive element is used in plastic, aluminium, cast iron and aluminium-cast iron (bimetallic) versions. Furthermore, there is a connection between a solid pulley (the connection between the grooved profile and the hub is full-surface.), an arm pulley (webs connect the grooved profile to the hub.) and a bottom pulley (the grooved profile is connected to the hub by a pulley.) The arm pulley is the most commonly used. The field of application and the requirements determine the choice of material.
These drive elements consist of a spacer ring and two conical parts. Due to their thin cones, clamping bushes require very little space. Therefore they are particularly suitable for smaller hubs. Designs for achieving high torques and self-centering are possible. It should be emphasized that the fixing on the hub does not cause any axial displacement to the shaft.
Taper clamping bush
This variant is very easy to install. Finish boring and grooving are not necessary. This saves costs. The bush is clamped onto the shaft at the same time and fixed in the disc with two screws. A feather key connection is only recommended for extremely high loads. Clamping bushes are available in 16 sizes (shaft diameter from 10 mm to 125 mm).
Drive elements are high-quality machine parts and designed for the highest requirements. Nevertheless, they must be handled and maintained with care. "Overloading" (running at higher speeds than permitted) and misuse increase wear. Stainless steel versions are rust-proof and last longer. Especially for machine parts that are in continuous use, it is advisable to use higher priced versions. Repairs almost always pay off.