Machine Parts

                                                          The additional considerations applied to the lathe fixtures are given below: 1. Clamps and other holding devices should be designed in such a way that they will not be loosened by centrifugal force. 2. The workpiece should be gripped on its largest diameter,and whenever possible the gripping diameter should be larger than the diameter being machined. 3. The fixture should be well balanced.Irregular –shaped workpieces may have to be counter weighted to prevent vibration .It is not necessary to achieve perfect balance unless the workpiece is rotating at high speeds. 4. The fixtures should be as lightweight as possible since it is rotating. 5. projections and sharp corners should be avoided as the operator may not be able to see them while the tool is rotating. 6. Thin sections of the workpiece may require support to resist the pressure of the lathe tool

Definition of Drill Jig: Drill Jig defined as a device which is ensuring that a hole to be reamed, tapped or drilled in a workpiece   will be machine in the proper phase.    In this work place should lighting as soon as possible. Should be large enough for holding.   Eliminates the sharp center’s for operator safety. Mention the Advantages of the Drill Jigs : It make possible to drill room or tap holes at much greater speeds and with greater accuracy. When Drill Jigs are used skill workers no need to operate it. The path of cutting tool control by Drill Jigs. Difference between the Drill Jigs and Fixtures: Drill Jig may be remedy around on the table and is not so fast with machine table. But Fixture always fastened with machine bed. Drill Jigs are physically limited and control the path of cutting tool. But fixtures do not guide by cutting tool generally. Drill Jigs applications is drilling, tapp