TORSION SPRINGS are helical springs that exert a torque or rotary force. The ends of torsion springs are attached to other components, and when those components rotate around the center of the spring, the spring tries to push them back to their original position. Although the name implies otherwise, torsion springs are subjected to bending stress rather than torsional stress. They can store and release angular energy or statically hold a mechanism in place by deflecting the legs about the body centerline axis.
This type of spring is normally close wound but can have pitch to reduce friction between the coils. They offer resistance to twist or rotationally applied force. Depending on the application, torsion springs can be designed to work in a clockwise or counter-clockwise rotation, thus determining the direction of the wind.
Applications: Common torsion springs are used in clothes pins, clipboards, swing-down tailgates and garage doors. Torsion springs are used for hinges, counterbalances and lever return applications. Sizes range from miniature, used in electronic devices, to large torsion springs used in chair control units. Load should be applied in the direction of wind; unwinding from the free position is not recommended. As they wind up, torsion springs reduce in diameter and their body length becomes longer. This should be considered when design space is limited. Torsion Springs perform best when supported by a rod or tube. The designer should consider the effects of friction and arm deflection on the torque.
Configurations: Torsion springs are designed and wound to be actuated rotationally, and to provide an angular return force. There are many options for leg configuration so the spring can be attached in different ways. Leg specifications to consider for torsion springs include leg angle, equal leg length, and leg end style. Springs that are straight or parallel on the same side are considered to have a 0º leg angle the increasing angle is in the unwinding direction. Leg end style choices include straight torsion, straight offset, hinged, short hook ends, and hook ends. Torsion spring ends can be bent, twisted, hooked or looped to suit your project needs.
The double torsion spring consists of one set of coils coiled right hand and one set of coils coiled left hand. These coils are connected, usually with an unwound section between the winds and work in parallel. The sections are designed separately with the total torque being the sum of the two.
Dimensions: Inner Diameter, Outer Diameter, Wire Diameter, and Spring Length.
The Inner Diameter is specified when the spring is required to slip over a mandrel with sufficient clearance to operate freely.
The Outer Diameter is specified when the spring is required to fit into a circular hole with sufficient exterior clearance to operate freely, or if there are outer housing clearance issues.
The Spring Length is the length of the spring coil.
Jiangxi Lihuan Spring Co., Ltd. Was set up in 2002, conveniently located in Guixi Industrial Park, Jiangxi. Lihuan manufactures high precision springs with the various wire diameters from0.15mm to80mm, plate thickness from S0.2mm to S20mm in material from standard music wire to whatever exotic material you may require. These springs are being widely applied in automobile, motorcycle, electronic, electrical household appliances, office equipment, railway, power support, engineering, mining and constructing machinery. The most importantly, the products for automobile, railway, mining engineering and other press parts have reached to the highest level in China.
Lihuan occupies more than 50, 000 sq. M area, and have a set of advanced and complete manufacturing facilities, up to 312 sets of producing equipments, testing and inspection instruments. The company has accomplished the certification of ISO/TS16949 while has already processed the quality control system based on ISO9001: 2000. Lihuan believes that strictly quality control management is the centre of the enterprise all the time.
Lihuan owns advanced technologies and R & D, using CAD/CAE/CAM, PRO-E and SOLIDWORKS from the product design to the whole production. Now it has 35 professional technicians including 5 engineers and 227 well-trained staffs.
Lihuan insists on continuous developing and improvement, rated as a technology-innovating model enterprise and Quality Guarantee Enterprise of provincial level, and AAA level contract-focusing and promise-keeping enterprise of provincial level.
High quality, Honesty and integrity, Sincere Service makes Lihuan growing steady these years. The products are sold well domestically and exported to Europe, the U. S. A and southeastern Asia, deeply loved and trusted by the customers, and has established stable trading and cooperating relationship with many clients and companies.
Warmly welcome customers from all over the world to visit our company at any time.
