The main parts of the lathe are:
- Headstock: The headstock is usually located on the left side of the lathe and is equipped with gears, spindles, chucks, gear speed control levers, and feed controllers.
- Tailstock:
- Bed:
- Carriage:
- Lead Screw.
- Feed Rod.
- Chip Pan.
- Hand Wheel.
The term Machine includes wide variety of machinery, whereas Machine Tools are all such machines that possess the following characteristics. Machine Tools must be power driven (human operated machines are not machine tools). Machine Tools must be non-portable (portability is irrespective of size).
Explanation: Three jaw chuck is also known as universal or self centering chuck.
Following are the 5 different types of lathe attachments:
- Taper Turning attachments.
- Grinding attachments.
- Gear cutting attachments.
- Milling attachment.
- Thread chasing dials.
Regardless of how many axes of motion are required, in evaluating the purchase of any lathe, a shop must first consider the size, weight, geometric complexity, required accuracy and material of the parts being machined. The expected number of parts in each batch also should be taken into account.
A lathe is a machining tool that is used primarily for shaping metal or wood. It works by rotating the workpiece around a stationary cutting tool. The main use is to remove unwanted parts of the material, leaving behind a nicely shaped workpiece.
Lathe machine is one of the most important machine tools which is used in the metalworking industry. It operates on the principle of a rotating work piece and a fixed cutting tool. The cutting tool is feed into the work piece which rotates about its own axis causing the workpiece to form the desired shape.
There are two major components to the carriage, the saddle and the apron.
A chuck is a specialized type of clamp used to hold an object with radial symmetry, especially a cylinder. In a drill or a mill, a chuck holds the rotating tool; in a lathe, it holds the rotating workpiece. Chucks commonly use jaws to hold the tool or workpiece.
Lathes can be roughly divided into three types, engine lathes, turret lathes, and special lathes. The basic engine lathe is used for most lathes, with the smaller bench or portable machines, or larger vertical tables standing on the floor.
Which type of lathe is also known as centre lathe? Explanation: Engine lathe is also known as the centre lathe. This centre lathe is generally used for the production of cylindrical surfaces. Explanation: Wheel lathe is the type of special purpose lathe.
Uses. Lathes are used in woodturning, metalworking, metal spinning, thermal spraying, parts reclamation, and glass-working. Lathes can be used to shape pottery, the best-known design being the Potter's wheel.
The size of an engine lathe is determined by the largest piece of stock that can be machined. Before machining a workpiece, the following measurements must be considered: the diameter of the work that will swing over the bed and the length between lathe centers (Figure 7-1 ).
The Key Difference between Capstan and Turret Lathe is that Capstan Lathe is a light-duty machine. Turret Lathe is a heavy-duty machine.
The metal lathe is divided into four major components: the bed, the carriage, the tailstock and the head stock.
Further considerations. Size – In the US, you'll find lathes described as “8 in. by 24 in.” lathes. The latter number refers to the distance between centers (i.e., the headstock and tailstock), or the longest piece of material that lathe can handle.
The main spindle is generally hollow to allow long bars to extend through to the work area. This reduces preparation and waste of material. The spindle runs in precision bearings and is fitted with some means of attaching workholding devices such as chucks or faceplates.
All Geared Light Duty Lathe Machines
| Model | tagl-5 | tagl-6 |
|---|
| Capacity |
| Height of center | 190 mm | 190 mm |
| Swing over bed | 380 mm | 380 mm |
| Swing over cross slide | 250 mm | 250 mm |
Feed, Speed, and Depth of Cut
Feed rate is defined as the distance the tool travels during one revolution of the part. Cutting speed and feed determines the surface finish, power requirements, and material removal rate. The primary factor in choosing feed and speed is the material to be cut.What two functions can the lathe tailstock perform? The tailstock can be used to secure work holding accessories to help support the workpiece in many operations. It can also hold cutting tools for performing standard hole making operations.
Distance between centers. The longest piece of work that be held between a center in the headstock and a center in the tailstock. (see glossary below for more information). This is the second of the two numbers used to describe the lathe size.
Steady rests and follower rests hold a long workpiece steady during turning. They are also used to keep the workpiece from wobbling and to ensure that a drilled hole will be concentric with the outside diameter (OD) of the part.
