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|CLAMPS - VEE BLOCKS|
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|Vee Blocks are manufactured from cast iron and accurately machined to produce precise surfaces. Small vee blocks are sometimes manufactured from mild steel and case hardened. They are manufactured in pairs (which are numbered), and should be kept together, as they are identical.
Usually, one vee block has a clamp, allowing round section materials to be clamp in place. The other vee block acts as a support (see the diagram below).
The clamp supplied with the vee block, has a knurled head with a hole through it, for a tommy bar.
|Vee blocks are ideal for marking round section material. In this diagram a ‘key seat rule’, sits on the round section metal, making it easier to mark out.|
|Some vee blocks are capable of holding square section material, as seen opposite. In this case, the thread is fed at a 45 degree angle, on to the surface of the material. The square section fits perfectly into the vee blocks own section.|
|The diagrams below, show how vee blocks can be used to secure material in place, whilst being drilled. Notice, how the block is fixed to the drill table, by bolt clamps.|
|Two vee blocks have been used to clamp round section steel, to the table of a drilling machine. The U-shaped clamp, is ideal for holding the round section in place. Notice the position of the vee blocks. Before drilling, a centre punch is used to put an indentation in the surface of the round section. This helps prevent the drill bit slipping on the surface, ensuring accuracy.|
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