Die Springs

Die springs are mainly used in die machinery. However, they are also well-suited for many applications where high-static or shock-load stresses are required or when maximum cycle-life is important. Rectangular wire is used to reduce the solid height and increase the space efficiency of the design.

Introduction to springs

A spring is electric members which store energy and provides a force over a distance by elastic compression. Spring have ability to withstand relatively large compression elastically. Today springs find tremendous applications in engineering and other areas, which makes wide variety of springs both in size and shapes. Springs are mainly used for following functions.

• To cushion, absorb or control the energy either due to shocks, vibration as in railway wagons, automobiles, shock absorbs, press tools etc.
• To exert force as in spring loaded safety value, clutches etc.
• To support moving masses or to isolate vibrations.
• To store energy as in clocks, toys, machines etc.

Springs are classified as:

• Compression springs
• Tension springs
• Spiral Springs
• Disc Springs
• Spring Rings and Bars

In this catalogue we are mainly provided details of compression springs used for following applications

• Press toll dies for sheet metal working
• Moulds for plastic injection modeling.
• Jigs, Fixtures and machines tool.

The springs which are commonly us in such applications mention above are made of rectangular Wire. This spring are known as Die Springs. The advantage of Die Springs over round wire spring is it can give higher compression as compare to the round wire spring & also generate higher force at same compression resulting into higher life of spring in operation. It is always recommended to use spring at its long life compression & shall never be used above average life compression.

This catalogue covers Die Springs as per ISO1024 & JIS12B Standard. The color of the spring identifies its Compression & Load Characteristics. The spring covered in the catalogue are Stock items.

Die Spring CATALOGUES as per ISO and JIS Standards : Click below

• ISO1024 (Click Here)
• JIS12B (Click Here)

Guide line - spring selection and operating condition

• Select the spring carefully at the design stage.
• For long stroke - select light load or medium load spring.
• For more load - select heavy load or extra heavy load springs.
• Calculate spring stroke (required compression)
• Pre loading compression should be equal to 5% of the length.
• Use guide pin, a locating board as a guide - this is essential for springs having a free length / diameter ration exceeding 3.5.
• If possible use longer springs for lower loads.
• Never compress springs beyond the average life load and compression.
• Always check spring holder heights and working strokes of moving elements after die tools has been reground.
• Protect springs from corrosive agents.
• Do not exceed a working temperature of 2500 C. No significant load reduction occurs up to 1200 C, beyond this temperature an average loss of 1% for every 400 C must be calculated.
• Do not one spring at a time, if they are multiple in use.
• Do not alter physical characteristics of springs like cutting of coils, grinding of internal or external diameter.