German R.G.P springs R.G.P model R.G.P price

R.G.P springs are helical springs that withstand axial tensile forces. Extension springs are generally manufactured from materials with a circular cross-section. When not under load, the coils of an extension spring are usually tightly wound with no gap between them. Many different end fittings or "hooks" are used to ensure the source of tensile force for the extension spring. The working principle of extension springs is opposite to that of compression springs. Compression springs exert a reactive force when compressed, while extension springs exert a reactive force when extended or pulled apart. When the two ends of an extension spring are pulled apart, the spring attempts to pull them back together. Like compression springs, extension springs also absorb and store energy. However, unlike compression springs, most extension springs are typically under a certain degree of tension even when there is no load. This initial tension determines how tightly the extension spring is coiled when there is no load.

R.G.P spring installation and removal

Hydraulic hand pallet 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 1000N, making its installation and removal very difficult. This often delays troubleshooting time and directly affects production progress. Several measures were taken, but the results were unsatisfactory. Therefore, I designed a pressure spring installation and 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. Rotate the pressure nut n to tighten the pull rod 15, causing the upper pressure lever 13 and lower pressure lever 1 to move relative to each other, forcing the pressure spring to compress. 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. At this point, 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 installation/removal 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 fits with the pressure lever via an interference fit. It is required to have good contact with the spherical washer 12 and the ball head of the rod 15. The pressure block 10 and connecting pin 14 have a clearance fit, requiring 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.

R.G.P spring selection

A Selection of spring force: Choose 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 matches 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 in the design. Second, during gas charging, high-pressure gas inevitably suffers throttling losses, causing a slight drop in spring force. Third, gas springs have a long service life; after a period of use, high-pressure nitrogen will have some leakage, causing a slight decrease in spring force. B Selection of the number of gas springs: Based on layout requirements, combined with mold structure and the placement of force application points, ensure that the mold does not experience eccentric loading during operation, while also facilitating mold adjustment. This ensures sufficient service life for the gas springs. C Selection of the boost ratio of gas springs: 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 gas springs, it is desirable that the total height of the gas spring is not too high to avoid instability and overly complex structures during mold installation. 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 adopt a gas spring seat plate system, which can reduce mold height and improve the stability and reliability of the gas springs. Sometimes, for safety and to avoid accidents, a safety stroke of 3-5mm needs to be increased when selecting gas springs. Selection of gas spring structural forms: When designers use gas springs in molds, they first need to decide on their structural form. Comprehensive consideration should be given to stamping process requirements, mold structure, equipment used, working environment, working conditions, mold cost, and adjustment/maintenance factors. A Independent type: The most widely applied is the independent gas spring, which occupies less mold space, is securely mounted, and comes in 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. They use high-pressure pipes to connect individual gas springs together, and install a control instrument to equalize the spring force of each gas spring in the entire system, thereby integrating the whole system into one, equivalent to a single independent gas spring. This achieves a larger spring force and balance in spring force transmission, extends mold life, and ensures the quality of stamped parts.

R.G.P spring features

Suspensions using torsion bar springs have lighter mass, simpler structures, and do not require lubrication. By adjusting the installation angle of the fixed end of the torsion bar spring, automatic adjustment of vehicle height is easily achieved. Torsion bar springs store greater elastic energy per unit volume and have low mass. Compared with helical springs, torsion bar springs are compact and easy to arrange. Torsion bar springs are widely used in off-road vehicles, light passenger cars, and trucks. Torsion bar springs can be classified by cross-sectional shape into circular, tubular, and leaf types. Circular solid torsion bars have simple structures and are the most commonly used. To assemble the torsion bar, both ends are machined into splines, hexagonal, square, etc. Since the spline head dimensions are relatively small, spline connections are mostly used. Generally, the major diameter of the spline is 1.2 to 1.3 times the working diameter of the torsion bar, and the spline length is approximately 1.4 times the major diameter of the spline. As long as the crushing stress of the spline teeth is within permissible limits, the spline teeth should not be selected too long. Torsion bar springs generally use involute splines GB3478. In the JSB2705 standard, the recommended standard pressure angle for splines is 45°; modules are 1mm and 0.75mm. To facilitate the assembly of torsion bar springs, some torsion bar springs have unequal diameters at both ends or a blind tooth machined on the spline teeth at both ends.

Weidou Intelligent Technology professionally sells German R.G.P compression springs, R.G.P extension springs, R.G.P helical springs, R.G.P wave springs, R.G.P constant force springs, R.G.P torsion springs, R.G.P bending springs, R.G.P disc springs, R.G.P ring springs, R.G.P leaf springs, R.G.P torsion bar springs, R.G.P tension springs, R.G.P retaining rings, R.G.P tension springs, R.G.P die springs. All are original imports from Germany. Customers are welcome to inquire and order.