Material diameter (d), outer diameter (D) free height (Ho) total circle (n1), the number of working laps (n), pitch (t), helical direction: there is a difference between left and right rotation, commonly used right, the drawings do not specify the general use of the right-hand rotation. There are load requirements note on the load (p1p2pi) and the corresponding value (H1H2Hj) or (F1F2Fj).
Spring rotation for the left-hand rotation should be noted, the right-hand rotation does not need to be noted, when asked to check the inner diameter of the spring, in the value of D2 after the addition of the D1 symbol.
Example of marking: material diameter 3mm, spring mid-diameter 20mm, free height of 80mm, load, inner diameter, free height and axis line and the perpendicularity of the two end loops accuracy of 3, the material is carbon spring steel wire Ⅱ group, surface oxidation treatment of the right-handed springs; compression springs 3 × 20D1 × 80 GB2089-80.
Expanded information< /strong>
Wire springs of compression springs are used for everything from home appliances to motorized equipment, motors, and other types of springs because it is the desired type of spring. By the load acting on them or their ends being compressed, compression springs are designed to compress the wire in an attempt to return the spring back to its original shape, thus pushing the load back. Main application directions: medical respiratory equipment, medical mobility equipment, hand tools, home care equipment, vibration damping, engine valve springs.
Compression springs provide resistance to external load pressures. Compression springs are typically coiled at equal pitches of metal wire and have a fixed wire diameter. Compression springs utilize multiple open coils to provide resistance to external pressures, such as gravity pressing down on a wheel, or a body pressing down on a mattress. Compression springs are generally coiled at a constant pitch and have a fixed wire diameter.
In addition, there are also conical compression springs, or a combination of conical and linear springs. Depending on the area of application, compression springs can be used to resist pressure and/or store energy. Round wires are the most commonly used for compression springs, but there are also compression springs made from square, rectangular and special shaped wires.
Baidu Encyclopedia - Compression Springs
Baidu Encyclopedia - Compression Springs