Hammer

Hammer: Hammers are used to strike a job or a tool. They are made of forged steel of various sizes (weight) and shapes to suit various purposes. Parts namely are:- Peen, Wedges, Eye, Head, Face, Handle.

The eye is normally made oval or elliptical in shape and it accommodates the handle or shaft. The end of the handle which fits into the eye is spread or split by forcing a metal wedge into it to prevent the hammer’s head from flying off the handle is made of elastic wood or bamboo and is so shaped and sizes that when gripped it gives an easy feel to the hand. This ‘fee, is known as the “balance of the hammer”. The handle of hammer should be 250 to 325 mm long. The length of handle for light hammers is 200 to 260 mm that for heavy hammer is 380 to 450 mm.

HAMMER: हथौड़ों का उपयोग वर्कपीस या किसी उपकरण को मारने के लिए किया जाता है। वे विभिन्न आकार (वजन) के इस्पात (Forged Steel) के बने होते हैं और आकार विभिन्न उद्देश्यों और कार्यो के अनुरूप होते हैं।

Classified of hammers:

1. Ball peen hammer: This is most common form of hammer and is sometimes called engineer‘s hammers of chipping hammer. The peen has a shape of a ball which is hardened and polished.

This is hammer is chiefly used for chipping and riveting. This size of base peen hammer varies from 0.11 to 0.91 kg.

2. Cross peen hammer: This is similar to ball peen hammer in shape and size except the peen which is across the shaft or eye.

This is mainly used for bending, stretching, hammering into shoulders, inside curves, etc. the size varies from 0.22 to 0.91 kg.

Warrington hammer: A hammer with a blade-like peen at tight angles to the haft, used by carpenters. Cross peen hammer also called warrington hammer.

3. Straight peen hammer: This hammer has a peen straight with the shaft, i.e., parallel to the axis of the shaft.

This is used for stretching or penning the metal. The size varies from 0.11 to 0.91 kg. 

4. Soft hammer: The mallet is a wooden- headed hammer of round or rectangular cross-section. The striking face is made flat to the work.

A mallet is used to give light blows and gauges.

5. Claw hammer: A claw hammer is a tool primarily used for driving nails into, or pulling nails from, some other object.

Generally, a claw hammer is associated with woodworking but is not limited to use with wood products.

6. Riveting hammer: A hammer usually wth a flat face and cross peen used for driving rivets and beating metal.

7. Setting hammer: A light hand-hammer used for swaging the teeth of saws in setting them.

It has a special shape to enable one tooth to be hit without striking the next also.

8. Raising hammer: A hammer with a rounded face used in raising sheet metal.

9. Sledge hammer: A sledge hammer is a tool with a large, flat, often metal head, attached to a long handle.

The long handle combined with a heavy head allows the sledgehammer to gather momentum during a swing and apply a large force compared to hammers designed to drive nails.

10. Set hammer:

1 : A hammer used as a swage or flatter in blacksmithing. 

2 : A hammer with a hollowed-out face used as a swage in riveting.