German atz springs, atz models, atz prices

atz spring is a new type of elastic component that uses high-pressure nitrogen as the working medium. It features compact size, high spring force, long stroke, smooth operation, precision manufacturing, long service life (one million cycles), flat force curve, and no need for pre-loading. It performs tasks that are difficult for conventional elastic components such as metal springs, rubber, and air cushions. It simplifies mold design and manufacturing, facilitates mold installation and adjustment, extends mold service life, ensures stable product quality, and can be designed as a nitrogen spring system to operate as part of the mold. The system can easily achieve constant pressure and delayed action, making it an ideal new-generation elastic component with flexible performance.

atz spring installation and removal

Hydraulic lift hand trucks are widely used in production. During maintenance of their pressure oil pumps, we found that the pressure spring responsible for returning the piston rod of the pressure oil pump and the pressure arm of the truck has a wire diameter of n and stores a spring force of up to 1000N. Installation and removal are very difficult, often delaying troubleshooting and directly affecting production progress. Previous measures yielded poor results. Therefore, I designed a pressure spring installation/removal tool as shown in Figure 1. The tool consists of a lower pressure lever 1, pressure blocks 10, connecting pins 14, nuts 1, spherical washers 12, upper pressure lever 13, positioning sleeves 16, and levers. During operation, rotate the nut 11 to the appropriate position so that the cylindrical head claw of the lower pressure lever 1 contacts the vehicle body 2. The two pressure blocks 10 press symmetrically on the washer 6. Tighten the nut n to pull the tie rod 15, causing the upper pressure lever 13 and lower pressure lever 1 to move relative to each other, compressing the pressure spring. When the washer 6 separates from the cylindrical pin 7, the pressure roller shaft 9, pressure roller 8, and cylindrical pin 7 can be removed. Then, loosen the nut 11, remove the installation/removal tool, and take out the pressure spring to disassemble, inspect, and repair the pressure oil pump. The positioning sleeve 16 on the tool is a key component. During manufacturing, one end has an internal spherical surface with a slot hole in the middle, and the other end has an inclined flat surface. It has an interference fit with the pressure lever. It must make good contact with the spherical washer 12 and the ball head of the lever 15. The pressure block 10 and connecting pin 14 have a clearance fit to ensure flexible rotation. The connecting pin 14 and upper pressure lever 13 have an interference fit. The connecting shaft 18 and pressure lever have a clearance fit.

atz spring selection

A. Selection of spring force: Select the quantity, model, and spring force of each nitrogen spring based on the calculated punching force. Generally, the spring force should be selected by adding an increase of 15% to 20% to the calculated punching force, which better reflects actual conditions. First, mold wear leads to changes in clearance, dulling of cutting edges, and other process parameter changes. Inconsistencies in mold thickness and sheet metal deformation resistance cause changes in workpiece deformation resistance, so allowance should be made in the design. Second, during charging, high-pressure gas inevitably experiences throttling losses, causing a slight decrease in spring force. Third, nitrogen springs have a long service life, but after a period of use, high-pressure nitrogen leakage causes a slight drop in spring force. B. Selection of nitrogen spring quantity: Based on forming requirements, combined with mold structure and force application points, ensure no eccentric loading occurs during mold operation and facilitate mold adjustment. This ensures sufficient service life for the nitrogen springs. C. Selection of nitrogen spring boost ratio: Select based on the nitrogen spring characteristic curve and stamping process requirements to determine the model. Determining the boost ratio is particularly important when stable force change, basically constant working force, or high initial force is required. D. Selection of nitrogen spring stroke: Regardless of the process, when selecting nitrogen springs, keep the total height low to avoid instability and overly complex installation structures. Larger strokes result in higher prices, which is especially important for independent nitrogen springs. If a large stroke is required by the process, it is recommended to use a nitrogen spring manifold plate system to reduce mold height and improve stability and reliability. For safety and to avoid accidents, increase the safety stroke by 3-5mm when selecting nitrogen springs. Selection of nitrogen spring structural form: When using nitrogen springs in molds, designers must first decide on the structural form, considering stamping process requirements, mold structure, equipment, working environment, working conditions, mold cost, and adjustment/maintenance factors. A. Independent type: The most widely used is the independent nitrogen spring. It occupies little mold space, is securely mounted, and comes in various structural forms. Several different installation forms require no accessories and can be directly installed in the mold. It is the preferred design form for designers today. B. Pipe-connected type: Pipe-connected types are generally used for large stamping parts and large coverings. High-pressure pipes connect individual nitrogen springs, and a control instrument is installed to equalize the spring force of all nitrogen springs in the system, integrating the entire system into one equivalent independent nitrogen spring. This achieves greater spring force and balance in force transmission, extending mold life and ensuring the quality of stamped parts.

atz spring classification

1) ISO International Standard Type: ISO nitrogen springs are the most common typical type of nitrogen spring. All technical parameters comply with the ISO11901 international standard for nitrogen springs and Chinese national standards; B type nitrogen springs also comply with the nitrogen spring standards of companies such as FORD-WDX3560 (Ford), GM-M-150 (GM), and Renault (Renault). 2) Compact Structure Type: Also known as J type nitrogen spring, this is a series of products fully named J type compact structure nitrogen spring. J type compact structure nitrogen springs are popular among mold designers. Compared to the B series, they have a shorter cylinder base length and thus a shorter total length, reducing mold design height. They are one of the preferred types for specialized mold nitrogen springs. 3) Ultra-compact Type: This model has the shortest base length among nitrogen springs worldwide. Its outer diameter is one size smaller than other types (except T type extra-slim structure), but the piston rod diameter is the same, resulting in a compact size and high force. C type nitrogen springs perform no worse than ISO standard type nitrogen springs when the required working stroke is not too long. 4) Extra-slim Structure Type: This is the most compact cylinder diameter type among nitrogen springs, featuring piston sealing and an outer diameter even smaller than the ultra-compact type. The working stroke of the H type nitrogen spring series generally does not exceed 50mm, and its performance is no worse than that of C type nitrogen springs.

Weidou Intelligent Technology specializes in selling German atz compression springs, atz extension springs, atz helical springs, atz wave springs, atz constant force springs, atz torsion springs, atz bending springs, atz disc springs, atz ring springs, atz leaf springs, atz torsion bar springs, atz tension springs, atz retaining rings, atz tension springs, atz mold springs. atz original imports from Germany. Welcome inquiries and orders.