German ONDRIVES springs, ONDRIVES models, ONDRIVES prices

ONDRIVES springs are elastic elements with several peaks and valleys on a thin metal ring. They are typically used in applications where the load and deformation are small, requiring low spring stiffness and the application of axial preload. Wave springs are particularly suitable for weight-sensitive applications and those constrained by limited installation space. Typical application areas include aerospace, precision machinery, hydraulic seals, and high-end motors. They are thin, ring-shaped elastic metal elements composed of several peaks and valleys. This product uses high-quality spring steel 65Mn (60Si2MnA/50CrVA /0Cr17Ni7Al /SUS304), heat-treated using specific methods. Depending on the specific conditions, the hardness is generally controlled between HRC44 and 55. The surface is blackened, providing good elasticity. Wave springs are widely used in industries such as motors, textile machinery, hydraulic equipment, and automotive. They are mainly installed in bearing housings or bores suitable for their nominal dimensions. They require very little installation space and have special functions such as noise reduction and vibration damping.

ONDRIVES Spring Applications

Extension springs, also known as helical extension springs, generally have uniform pitch and circular cross-sections. They can be used in many occasions, such as production assembly, testing, R&D, and maintenance. Extension springs hold an important position in the global market and are widely used in national defense, marine, computer, electronics, automotive, mold, medical, biochemistry, aerospace, railway, nuclear power, wind power, thermal power, construction machinery, mining machinery, building machinery, elevators, and other fields.

ONDRIVES Spring Selection

A. Selection of spring force: Select the quantity, model, and spring force of each gas spring based on the calculated punching force. Generally, the spring force of the gas spring should be selected by adding an increase of 15% to 20% to the calculated punching force, which better reflects actual conditions. First, after mold wear, gaps change. Changes in process parameters such as blunt cutting edges, inconsistencies in mold thickness and sheet metal deformation resistance, cause changes in workpiece deformation resistance, so allowance should be made for deformation resistance in the design. Second, during charging of the gas spring, high-pressure gas inevitably suffers throttling losses, causing the spring force to float downward. Third, gas springs have a long service life; after a period of use, there will be certain leakage of high-pressure nitrogen, causing a slight decrease in spring force. B. Selection of the number of gas springs: Based on layout requirements, combined with the mold structure and the position of force application points, ensure that no eccentric loading occurs during mold operation, while also making mold adjustment convenient. This ensures sufficient service life for the gas springs. C. Selection of the boost ratio of the gas spring: The boost ratio can be selected based on the characteristic curve of the gas spring and stamping process requirements to determine the gas spring model. Determining the boost ratio is particularly important when stable force change, basically constant working force, or large initial force is required. D. Selection of gas spring stroke: Regardless of the process, when selecting a gas spring, it is preferred that the total height of the gas spring is not too high to avoid instability and overly complex structure during installation in the mold. Moreover, the larger the stroke, the higher the price of the gas spring, which is especially important for independent gas springs. If a large stroke is indeed required due to process needs, it is recommended to use a gas spring seat plate system, which can reduce mold height and improve the stability and reliability of the gas spring. Sometimes, for safety and to avoid accidents, a safety stroke of 3-5mm should be added when selecting the gas spring. Selection of gas spring structural form: When designers use gas springs in molds, they first need to decide on the structural form. Comprehensive consideration should be given to the stamping process requirements of the required parts, the structural form of the mold, equipment used, working environment, working conditions, mold cost, and adjustment and maintenance factors. A. Independent type: The most widely used is the independent gas spring, which occupies less mold space, is securely placed, and has various structural forms. The following different installation forms do not require any accessories and can be used by placing them directly in the mold. It is the preferred design form for designers today. B. Pipeline connection type: Pipeline connection types are generally applied to large stamping parts and large coverings. It uses high-pressure pipes to connect individual gas springs together, and installs a control instrument to equalize the spring force of each gas spring in the entire system, thus integrating the entire system into one, equivalent to an independent gas spring. This achieves a larger spring force and balance of spring force transmission, improves mold life, and ensures the quality of stamped parts.

ONDRIVES Spring Precautions

Due to product structure limitations, multi-strand springs generally have the characteristics of high strength and good performance. The material must guarantee final performance in terms of spring strength and toughness. During the processing of multi-strand springs, attention should be paid to: 1. Support coils can use cold coiling or hot coiling methods according to product requirements. When using hot coiling, the spring must not be heated to the point of sparking or whitening; the temperature for silicon-manganese steel must not exceed 850℃. Support coils and effective coils must have effective contact, and the gap must not exceed 10% of the nominal inter-coil gap. 2. Multi-strand spring characteristics can be determined by adjusting the lead; the pitch can be adjusted as necessary during winding. The pitch can be 3 to 14 times the wire diameter, but generally 8 to 13 times is preferred. The spring force is also closely related to free height, closed ends, outer diameter, and wire performance, and can be changed by adjusting one or more of these items. 3. Springs without support coils and springs with excessively fine wire diameters should not have welded ends, but the end strands should not be obviously loose and burrs should be removed. For multi-strand springs requiring welded heads, the welding length should be less than 3 times the strand diameter (maximum not greater than 10 mm). The heating length should be less than one coil, and it should be polished smooth after welding. During gas welding, the welded part should undergo local low-temperature annealing. 4. Spring surface treatment generally involves phosphating, but other treatments are also possible. For zinc and cadmium plating, dehydrogenation treatment must be performed after electroplating. After dehydrogenation, 3% (no fewer than 3 pieces) should be sampled for re-testing of presetting treatment, and no fractures should occur during re-testing. Springs should be cleaned of surface dirt, salt marks, and oxide scale, using methods such as sandblasting or gasoline cleaning, but acid pickling must not be used. 5. The compression time for important springs is 24 hours, and for ordinary springs, it is 6 hours or continuous compression 3 to 5 times, holding for 3 to 5 seconds each time. During compression, the gap between the spring and the mandrel should be 10% of the mandrel diameter; if the gap is too small, operation is difficult, and if too large, the spring is prone to bending deformation. If one spring breaks during compression, the others should be reprocessed.

Weidou Intelligent Technology professionally sells German ONDRIVES compression springs, ONDRIVES extension springs, ONDRIVES helical springs, ONDRIVES wave springs, ONDRIVES constant force springs, ONDRIVES torsion springs, ONDRIVES bending springs, ONDRIVES disc springs, ONDRIVES ring springs, ONDRIVES leaf springs, ONDRIVES torsion bar springs, ONDRIVES tension springs, ONDRIVES retaining rings, ONDRIVES tension springs, ONDRIVES mold springs. ONDRIVES original imports from Germany. Welcome customers to inquire and order.