Posted in Lathe Machine

Accessories of Lathe and Their Functions

A general-purpose machine tool is basically comprised of power drive and kinematic system for the essential formative and auxiliary tool – work motions and a rigid body or structure to accommodate all the above. But several additional elements or devices called accessories are also essentially required for that machines’ general functioning, mainly for properly holding and supporting the workpiece and the cutting tool depending upon the type and size of the tool – work and the machining requirements. Before reading this, you should Know basic Information about lathe and Lathe specifications. 1. Chucks Workpieces are held to the headstock spindle…

Posted in Lathe Machine

Work Holding Devices Used in Lathe Machine

The work holding devices are used to hold and rotate the workpieces along with the spindle. Different work holding devices are used according to the shape, length, diameter and weight of the workpiece and the location of turning on the work. They are: Chucks Face plate Driving plate Catchplate Carriers Mandrels Centres Rests Chucks Workpieces of short length, large diameter and irregular shapes, which can not be mounted between centres, are held quickly and rigidly in chuck.There are different types of chucks namely, Three jaw universal chuck, Four jaw independent chuck, Magnetic chuck, Collet chuck and Combination chuck. Three Jaw…

Posted in Machine Tool Maintenance

Methods of Lubrication for Bearings

Lubrication of components plays a vital role in the systematic functioning of the each part of the bearings. Hence, the mechanism that accommodates the lubrication of these components should also be given equal priority. The different types of lubrication system available for lubrication of bearings are: Ring lubrication Wick lubrication Splash lubrication Grease lubrication Bath Lubrication Air Oil Mist Lubrication Jet Lubrication Pulsed Air Oil Lubrication Ring Lubrication System The method of ring lubrication involves a ring hanging from down the rotating shaft. The bottom portion of the ring is immersed in the oil container. When the shaft starts rotating, the…

Posted in Computer Numerical Control

Advantages & Disadvantages of CNC (Computer Numerical Control) Machine

CNC machine basically Computer Numerical Control machine which particularly points at the involvement of computers in controlling machine tools operations. Initially it may seem like a regular functioning PC; however, it is unique and well developed software that is used to control machine tools. Here, the machine tools work through the numerical control, as mentioned above. Again, the computer software or rather program that is employed is customized for an object and then the machines are programmed accordingly with the Computer Numerical Control language. This is often referred to as the G- code. Now this particular code is used to…

Posted in Mechanical Engineering

Foundation Bolts & Its Various Types

Foundation bolts are used for fixing machines to their foundations. Foundation bolts are made by forging from mild steel or wrought iron rods. The bolt size depends upon the size of the machine and the magnitude of the forces that act on them when the machine is in operation. For setting the bolts in position, their positions are marked and then suspended in the holes made in the ground. Afterwards, cement concrete is filled in the space around in the bolts. Once the concrete sets; the bolts are firmly secured to the ground. Eye Foundation Bolt This is the simplest…