Lathe: Types, Components and Uses

A lathe is a machine that can perform numerous operations such as cutting, drilling, boring, threading, serrating, or beveling. The lathe rotates the workpiece around its axes to manufacture numerous objects, pieces of furniture, and decorations made of wood. 

If you want to purchase or use a quality lathe suitable for your work, but don't know what type you need or how to use it properly, read the following guide and find out everything you need to know about this machine.

What are the types of lathes?

There are numerous woodworking and metalworking operations. As a result, several types of lathes have been developed to handle the different tasks required in your workshop or industry.

The normal lathe

The normal or classic lathe is the first model characterized by the central axis, placed in a vertical position. This machine can perform various operations due to its versatility. It can perform:

• Longitudinal turning,
• Front face turning,
• Drilling the material to be manufactured.

In order for surfaces to be processed properly, the lathe needs the following movements:

• The main cutting movement. This is the rotational movement performed by the spindle and the workpiece.
• Advance movement. The feed movement is achieved thanks to the lathe knife, making it suitable for machining cylindrical, external and internal surfaces.
• Auxiliary movements.

Carousel lathe

The carousel lathe has the main spindle in a vertical position. Thanks to this, parts with short lengths and large diameters can be manufactured.

The turret lathe

The revolver lathe is so named because it has an even number of collets, 6 or 8 positions, arranged similar to a revolver pistol. 

This model is used for machining forged, cast, semi-finished or bar-type parts. It can also perform drilling, reaming, boring and cutting operations.

Semi-automatic lathe

The operations on a semi-automatic lathe are performed by the specialized person by gripping and releasing the material on the one hand, and on the other hand, the machining operations are done automatically.

Automatic lathe

There are two models of automatic lathe:

• Monoaxial. The single-spindle lathe is suitable for turning, drilling, threading and boring operations;
• Multi-axis. The multi-axis machine processes parts in multiple work stations; it can have from five to twelve work shafts.

Material processing is carried out automatically, following the introduction of parameters into the machine's control board.

Specialized lathe

Some parts require special attention. This category includes crankshafts or camshafts and specialized operations for beading and peeling bars.

CNC lathe

The conventional lathe has been replaced in specialized workshops with state-of-the-art equipment that facilitates your projects, regardless of their degree of difficulty.

The CNC lathe consists of a classic lathe along with a computer numerical control device. The machine also has auxiliary components that ensure its interconnectivity and proper functioning. 

There are two models of CNC lathe:

• Horizontal. It is most commonly found in workshops and is used especially for lighter materials.
• Vertical. The workpiece rotates in a vertical position and is used for large and heavy materials.

In other words, the CNC lathe ensures that operations are carried out from an intelligent software program that takes over the commands given by personnel in the field.

What are the components of a lathe present in your workshop?

Currently, machinery and tools are increasingly technologically advanced and offer projects in the field the increased reliability and quality you need. 

So, if you are just starting out or want to expand your knowledge about the uses and niches of a lathe, you need to know its essential components. The following components are compatible with several lathe models.

The frame

The bed is the most significant component of a lathe. The bed runs the entire length of the machine, with the bottom of the bed being covered by the tailstock and gearbox.

The rigidity of a lathe depends on the bed, which is most often made of cast iron, as it is a harder material than steel. There are also beds made of granite, artificial granite, or concrete.

Fixed doll

The tailstock is a complex system that can be considered the brain of the machine. Thanks to it, the lathe's spindle speeds can be set.

Also in this system is the transmission that takes over the mechanical power, transferring it to the universal joint.

The fixed headstock has many handles for adjusting speeds, a process achieved by combining different gears.

universal

The universal is the system that grips the workpiece and holds it tight throughout the cutting process. The lathe can have several jaws, from 2 to 6. The jaw is the component that presses the material to be manufactured.

trolley

The carriage is the moving component of the lathe. It can move back and forth along the entire length of the bed to place the cutter and slide in the correct positions.

The carriage has several levers that perform different tasks, such as selecting tapping screws, engaging the carriage, or cutting the processed material.

The process is similar for both mechanical lathes and CNCs, but for the latter the process is automated and easier to perform.

The moving doll

The tailstock is the component that supports long and heavy parts. It is mobile because it makes short movements towards the universal.

Gearbox

The gearbox is a separate component from the tailstock. It controls the feed rate of the carriage. The gearbox has three bars that perform distinct operations.

The lathe is also equipped with auxiliary components that help the machine function properly:

• Mandrel,
• Tool holder,
• Longitudinal and transverse sled,
• Advance bar,
• Chip and coolant collection tray.

An essential component that sets semi-automatic, automatic and CNC lathes apart from industrial ones is the control panel, which is the most advanced on a CNC lathe.

Using a lathe for wood and metal

Lathes are used to process many materials, but the most common are those for wood and those for metal.

Wood lathe. The wood lathe is used mainly to produce a variety of interior or exterior design elements, such as stair balusters, table or chair legs, and furniture parts.

Metal lathe. Metal lathe models are more robust than wood lathes and are used to perform a wide range of operations on metal materials. Like wood lathes, they have three working parameters: cutting speed, feed rate and depth of cut.

How to use a lathe

Before using a lathe for the first time, make sure you have read the instruction manual carefully. Do not turn on the machine if you do not know how to turn it off! Refer to the following information to understand how to use a wood lathe.

To begin, measure the length and thickness of the pieces of wood and other materials you want to process to know the exact dimensions.

You need to know the motor power and how to choose the appropriate rotation speeds. For example, lower speeds are suitable for asymmetrically shaped wooden pieces, and higher speeds are suitable for precision finishing.

Try to memorize the names of cutting and chipping tools so you can choose the right tools.

If you're just starting out, choose woodwork with soft or resinous essences, then gradually you can move on to coarser wood.

How to clean a lathe

To be able to clean a lathe correctly, without encountering incidents in the process, you will need disposable packaging, special solvents or degreasers for machines, and, of course, protective equipment consisting of glasses and gloves.

First, make sure the machine is not connected to a power source. Then it is recommended to use protective equipment.

Clean the equipment of dust and apply the special solvent for rust and other impurities and let it act for at least 5 minutes before wiping the surface. Repeat this step if the dirt is not gone.

Move the slide and tailstock back and forth to clean each area as thoroughly as possible. Once the entire lathe is clean, apply a quality oil.

Tips for the correct use of a lathe and for your protection

• It is recommended that the work area for the lathe be kept clean and tidy, as well as for the rest of the machinery.
• Do not place foreign objects in the work area or on the lathe, as accidents may occur. Be especially careful with bottles or cans of liquids, keeping them away from appliances or power sources.
• Make sure you know what each lever or button on the lathe does, and as mentioned earlier, make sure you know how to turn it off.
• Auxiliary components must be mounted firmly and correctly.
• The processed materials must be clamped very well in the lathe.
• Before leaving the workshop, turn off the lathe and, preferably, unplug it from the power source.

Lathes are essential machines for a small, medium or large workshop, due to the numerous functions they can perform, such as drilling, cutting, boring, threading, serration or grinding.

Depending on your projects, choose the right lathe model together with other automated machines featuring state-of-the-art components and software, so that your work tasks are pleasant and easy to carry out.