Drilling Jigs and Fixtures

Drilling Jigs are utilized to machine holes in mechanical items to get positional exactness of the gaps solidify drills bushes or jig bushes used to locate or guide the reamer or the drill tool.  In connection to the work piece these these guide bushes are not necessary but these prove to be economical and technical. The position of the jig into which the solidify/hardened bushes are mounted is called bush plate. Drilling jigs are either clipped to the work piece in which holes are to be bored or the work piece is housed and clamped in the jig or fixture body. If many holes  to be drilled , the drill jig is made to slide on the table to drilling machine. Such a drill jig is moved by hand into position under the drill so that the drill radially enters the bush.During this operation the jig is held by hand. If the  drill size is sufficiently larger to create a high torque , either stops ought to be given or the drill jig is clipped to the table of the drilling machine. A drill jig  is given feet which lay or slide on the table of drilling machine. These feet ought to be outside of the cutting powers, in this way giving strong backing.Drilling jigs make practically the drilling of holes at higher velocity with more noteworthy precision and with less talented laborer. At that point is conceivable when the holes are laid out and drilled by hand.Then is possible when the holes are laid out and drill by hand. Also they produce inter changeable parts because each part drilled in a drilling jig should have the same hole pattern as every other parts.It is clear that during drilling operations chips or burs  will be created. The chip or bur created at the short of the hole is smaller than the created at the end of the hole.The first type is called minor burs and second type is called major burr. (when the drill makes through the material).At the point when planning a drill jig these two sorts of burr ought to be thought about since they might bring about trouble in emptying the work piece from the jig or fixture after a hole has been bored.