BRIEF DESCRIPTION ABOUT PROJECT:

Stiffness of the spring means load required for unit deflection, It is also known as spring index and is main parameter for specification of springs. Springs like Compression helical spring, Tension helical spring, Leaf spring of various sizes and shapes are designed and manufactured. But to check their stiffness is very difficult unless we have such machine.

Stiffness checking machine also useful in Engineering college, Polytechnics, for laboratory experiments. Stiffness checking machine is useful for spring manufacturer as well as spring purchasers for checking the stiffness. In Industry quality control department helps much more.
Considering wide application of machine this project is taken for design the simple machine.

1) Title of the project: - Design of hydraulically operated Spring Stiffness Measuring Machine.

2) Objective of the study: - Knowing the stiffness of the spring.

3) Rationale for the Study: -

1. To know the Stiffness of any unknown spring.

2. In Spring manufacturing Industries quality checking.
3. Spring purchaser can check spring stiffness on this machine very
easily.
4. In educational institute this machine helps to compare the
theoretical design and practical spring stiffness.
4) Detailed Methodology to be used for carrying out of the study: - Springs are used in machines for different purpose. Automatic lever return after removing the load, automatic hydraulic cylinder return, spring are used in die cushioning, In pressure relief valve, in shock absorbers, in between railway wagons, Automobile Industry various shapes and sizes of springs are used.
In Industries they purchase the springs for their machines. But they are facing the problem of checking the spring stiffness. Understanding the Industry people problems this simple machine is designed. Machine operation is simple. Only knowing the two readings, load and deflection we can calculate spring stiffness.


5) Expected Contribution from Study: - This study helps to solve the problems of checking the stiffness of spring. This machine can be used in material testing laboratory as stiffness checking machine. Like rock well & Brinell hardness checking machines.

6) List of activities to be carried out to complete the project:-
(With the help of a bar chart attached herewith showing time schedule)
Ref. Page No.7A.
7) Places/Labs/Equipments and tools reqd. and planning of arrangements.
1) Welding shop reqd.for welding main frame.
2) Lathe machine reqd.for machining the components.
3) Hand pump, Hand operated D.C.valve, pressure relief valve, pressure gauge reqd. These equipments are manufactured in Polyhydron Company Belgaum.
4) I am working in Govt.ITI hence all tools and equipments are available.