German HERZOG springs HERZOG model HERZOG price

HERZOG springs are mechanical energy storage structures, primarily used in ancient ballistae and other crossbow-type weapons. Torsion springs store energy by twisting or rotating elastic materials that are soft and highly tough, thereby imparting a certain amount of mechanical energy to the projectile. Modern torsion spring torque bars are mostly made of steel with good elasticity, and their forms have varied greatly; examples include hairsprings in mechanical watches, power springs in toy gyro guns, and torque bars in tanks and automobiles. With their small volume and high torque, torque bars are ideal as shock absorption components for transportation vehicles. Torsion spring torque bars are mostly made of steel with good elasticity, and their forms have varied greatly; examples include hairsprings in mechanical watches, power springs in toy gyro guns, and torque bars in tanks and automobiles.

HERZOG 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 pump piston rod and the truck's pressure arm to their original positions has a wire diameter of n and stores elastic force up to 1000N, making its installation and removal very difficult. This often delays troubleshooting and directly affects production progress. Several measures were attempted with poor results. Therefore, I designed the pressure spring installer/remover shown in Figure 1. The tool consists of a lower pressing rod 1, pressing blocks 10, connecting pins 14, nuts 1, spherical washers 12, upper pressing rods 13, positioning sleeves 16, and rods. During operation, rotate the nut 11 to an appropriate position so that the cylindrical head claw of the lower pressing rod 1 contacts the truck body 2. The two pressing blocks 10 press symmetrically on the washer 6. Rotate the tightening nut n; via the tie rod 15, this causes the upper pressing rod 13 and lower pressing rod 1 to move relative to each other, compressing the pressure spring. When the washer 6 clears 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 installer/remover, and take out the pressure spring to disassemble, inspect, and repair the pressure oil pump. The positioning sleeve 16 on the installer/remover is a critical component. During manufacturing, one end features an internal spherical surface with a slot-shaped hole in the middle, and the other end is an inclined flat surface; it fits onto the pressing rod with an interference fit. It must make good contact with the spherical washer 12 and the ball head of the rod 15. The pressing block 10 and connecting pin 14 have a clearance fit to ensure flexible rotation. The connecting pin 14 and upper pressing rod 13 have an interference fit. The connecting shaft 18 and pressing rod have a clearance fit.

HERZOG spring material

Disc springs are mostly manufactured using cold-rolled or hot-rolled strip steel, plate steel, or forged blanks (forging ratio not less than 3). Common materials include spring steels such as 60S2MA and 50CVA; for thicknesses less than 1.1, high-carbon steel may also be used. Performance requirements for disc spring materials dictate that after heat treatment, they must possess high ultimate strength, yield limit, elastic limit, and fatigue limit, while also requiring high impact toughness, plasticity, and the highest possible yield-to-tensile strength ratio. To meet these performance criteria, most domestic and international manufacturers use high-quality cold-rolled or hot-rolled steel strips or plates. For disc springs with thicknesses greater than 6 mm, forged blanks are used, primarily consisting of medium-carbon low-alloy spring steels (silicon-manganese or chromium-vanadium spring steels) and high-quality carbon spring steels. Due to the high silicon-manganese content and low chromium-vanadium availability in China, disc springs mainly use 60Si2MnA. Comparing the two, 50CrVA offers better hardenability, temper stability, and impact toughness than 60Si2MnA, but 50CrVA is more expensive and suitable for applications with high fatigue requirements.

HERZOG spring manufacturing process

1) Cold forming process automation capability. Cold forming machines have developed up to 12 claws. Wire within the 0.3–14 mm range can be formed in a single step on a 8-claw forming machine. Development directions for forming process equipment: (1) Increase forming speed, with the main trend being improved equipment forming speed, i.e., production efficiency; (2) Improve equipment durability by enhancing the precision of equipment parts and strengthening heat treatment effects; (3) Add length sensors and laser rangefinders to implement automatic closed-loop control of the manufacturing process for CNC forming machines. 2) Cold forming process range capability. Large wire diameter spring coiling machines can handle maximum specifications of 20mm, =2000MPa, with a winding ratio of 5. Cold forming processes for variable-diameter or constant-diameter Minic-Block springs and eccentric springs still have limitations. 2) Hot forming process speed capability. In China, forming capabilities for 9–25 mm specifications rely solely on CNC2-axis hot coiling machines, with a maximum speed of 17 pieces per minute. There is a significant gap compared to developed countries. 2) Control capability for large spring hot forming processes. Due to the exclusive use of CNC2-axis hot coiling machines, shape control lacks action in three directions, resulting in poor precision; furthermore, the absence of automatic bar stock rotation control and adjustment mechanisms leads to lower levels and capabilities in hot coiled spring forming processes. Consequently, the precision level and surface oxidation/decarburization level of the springs are also relatively low.

Weidou Intelligent Technology specializes in selling German HERZOG compression springs, HERZOG extension springs, HERZOG helical springs, HERZOG wave springs, HERZOG constant force springs, HERZOG torsion springs, HERZOG bending springs, HERZOG disc springs, HERZOG ring springs, HERZOG leaf springs, HERZOG torsion bar springs, HERZOG tension springs, HERZOG retaining rings, HERZOG tension springs, HERZOG die springs, HERZOG original German imports. We welcome inquiries and orders from customers.