• Simpletech Instruments

Spring testing machine, manual

Bangalore-based Simpletech Instruments manufactures tabletop model spring testing machines. These machines are available as manually operated ones or numerically controlled (automatic with DC servo drive) ones. Short stroke machines of 300 mm suitable for spring testing, or longer stroke machines suitable for tensile testing of wire, rubber and plastic, are available. In the manually operated machine, the handle provided on the right side of the base enclosure ensures ease and convenience of operation. Self-holding nature of the machine ensures ease, fineness and stability in adjusting the load or length. The load or length can be adjusted to the desired value and held for long duration without change. The force is displayed digitally with a very fine resolution of 1/50,000 of the capacity. This is possible due to the provision of a dual auto ranging measurement. Length is displayed digitally with a resolution of 10 microns for the full stroke. The design is such that the structural and load cell deflection are the minimum. However small deflections caused due to elastic deformation of the structure and load cell are measured and automatically compensated by software. This ensures very high accuracy of the length measurement. Applications are for testing tension and compression springs. An extra attachment is offered for testing of torsion springs. Applications other than testing of springs, are failure strength testing of components, crimped cables, insertion or pull force finding for electrical connectors, switches, buttons, tensile testing of rubber, plastic, finding the crushing strength for tablets, capsule, and finding torque versus angular deflection characteristics of clutch plate.