What is a V block used for?
V-Blocks are precision metalworking jigs typically used to hold round metal rods or pipes for performing drilling or milling operations. They consist of a rectangular steel or cast iron block with a 120 degree channel rotated 45-degrees from the sides, forming a V-shaped channel in the top.
What is V block workshop?
V-Blocks are work holding tools that improve an operators ability to properly hold down a work piece. The sides, base, and contact surface must be precision ground so that the work piece can have reliable and sometimes repeatable reference surfaces on which to machine the work piece.
What are the grades of V block?
Steel V-Blocks are made from hardened and ground alloy steel having hardness 55-60 HRC generally conforming to IS-2949-1992 available in different Grades of accuracies i.e. Grade-0, Grade-1 and Grade-2 accuracy limits, having included Angle 90º± 5′.
Why are small vee blocks supplied with clamps?
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.
When would a vee block be used during a marking out operation?
If a master surface is not accessible, three different surface plates may be checked against each other for comparing inaccuracies. These devices come into play when circular jobs are involved over surface plate tools, Vee Blocks are used for holding and supporting them in place.
What is the standard length of V block?
Stainless Steel Hardened And Ground V” Blocks, Size: 65 L X 150 W X 75 H Mm.
What is the bearing area of V-Blocks?
What is the bearing area of V-Blocks? Clarification: Vee-Blocks have bearing area of greater than or equal to 20%. V-blocks are used for inspection and workshop purposes.
Can roundness be assessed using a V-block?
The V-block methods can be successfully used to measure the roundness and waviness deviations of large cylinders used in paper industry, shipping…
What is induced angle of V-block?
A monolithic kinematic vee block is the most widely used design. There are several variations possible. The included angle between the two plane prismatic surfaces can be varied to achieve a desired result. A 60 degree included angle of the prismatic faces will yield a 120 degree angle of contact with the ball.
What is the size of V block of Grade A?
‘B’ grade V blocks are made from closed-grain cast iron and ‘A’ grade V blocks are made from high-quality steel. V bock of grade A is more accurate and is found only up to 100 mm in length. V block of grade B is used for general work and is found up to 500 mm in length.
What is the bearing area of V block?
What is the bearing area of V-Blocks? Explanation: Vee-Blocks have bearing area of greater than or equal to 20%. V-blocks are used for inspection and workshop purposes.