All You Have to Know about Chuck Lathe

Posted on Jan 18, 2021

Chuck Lathe

These jaws of the chuck on a chuck lathe are usually line up in the arrangement with radially symmetrical patterns, scattered around the chuck like pointing stars. They are able to strictly fix the tool or the workpieces. Normally there would be chuck keys to control the tightness of the chuck, which is made with a similar style to the hand tools.

How does a chuck relate to a lathe chuck?

To define a chuck means to find something tight with a hole to limit the movement of the other object with radial symmetry. You can interpret chuck as clamps to grip things within many shapes. Sometimes you'll see chucks appearing on the power tools like drills and mills as a grip, or lathes. When a chuck is installed on a spindle, it is the so-called lathe chuck, which could limit the rotation in a headstock.

Since the chuck is some kind of specialized tool that is used to hold the object, there must some mechanical element behind it. It is known that jaws are created holes that exist on the chuck since the day they were born in a factory. Lathes are also called chuck lathes or chucker lathes because the chuck is an essential component of it.

These jaws usually line up in the arrangement with radially symmetrical patterns, scattered around the chuck like pointing stars. They are able to strictly fix the tool or the workpieces. Normally there would be chuck keys to control the tightness of the chuck, which is made with a similar style to the hand tools.

However, there are many lathe chucks that are without keys to adjust. Most of the time, the users will have to tighten or loosen these chucks manually with hand force. Although the keyless design provides a more efficient method in chucking and unchecking, the power of keyless lathe chucks holding the workpieces is sometimes considered not sufficient.

Sometimes, such an issue would accordingly create more problems related to cylindrical than hexagonal shanks. When it comes to collet chucks, it is a chuck with a collet that directly fits and grips the workpieces without adding jaws on the chuck.  

The jaws on lathe chucks are able to move individually. That feature allows them to sometimes fix the workpieces or hand tools with irregular shapes. Some designs of chucks are specifically more complicated, depending on the jaws they use on the chucks. There are lathe chucks with more jaws, the special shape of jaws, jaws for quick releasing, and so on. These customized part accessories would depend on the hearts of customers. For example, there are magnetic and vacuum chucks that would firmly attach to the surface of power tools or workpieces with pressure.
 

:: Read More: Have You Ever Heard of a Chucker Lathe?
 

How does a lathe chuck work with hand tools or workpieces?

When you say to chuck the hand tools or workpieces, it means to hold them in a certain position with types of chucks and part accessories. The process of engaging a lathe chuck or individual chuck is normally called chucking work. 

During the bar work, the stock would usually intrude from a chuck. The chuck would firstly work on it and be separated from objects. Some lathe chucks that are able to work automatically usually specialize in chucking. These lathe chucks are also known as chuckers.
 

Different types of chucks

In the few following passages, a few types of chucks that would be seen commonly in the market are expected to be introduced along with the lathe chuck. It wouldn’t be a bad idea to bring about other chucks as purchasing references.
 

Lathe chucks

Normally, the lathe chuck would be applied to fix the workpiece on the lathe for operational uses. In the milling, the lathe chucks also serve the purpose of an indexing fixture. Manual lathe chucks care parts accessories that can only be driven by a pinion or screw. 

Power lathe chucks, on the other hand, are chucks that rely on electrical or hydraulic power to close the jaws. These lathe chucks are designed for mass production, for being highly accurate than average. 

  • Jaws applied to machinable lathe chucks

Soft materials, for instance, mild steel or aluminum, are applied to make this type of lathe chuck jaws so that they can be precisely modified and machined to align the workpiece with less error. They are flexible enough to be cut in order to fit different parts or hand tools. They are specifically perfect for fine-machined parts accessories. 

Jaws applied to hard lathe chucks
This kind of lathe chuck jaws is made of case-hardened steel. It is made to be a serrated surface so that it can fix the workpiece on the machine. It is commonly used during finishing rough parts.
 

Drill chuck

The drill chuck, by its name, serves the purpose of holding the drill bits or other handheld power tools. It usually comes with the style of self-centering and three-jaw chuck. Starting from the cheap, low-cost hand tools to the professional equipment, drill chucks are favored by such popularity. Even the group of people who don’t usually work with power tools would possibly recognize the drill chuck.

The other type of drill chucks would be a pin chuck, which is sometimes applied to keep a small drill in position. Please be aware that this type of drill chuck doesn’t fit a normally scaled drill. The process is to insert the drill into the pin chuck and tighten it. A more secure way would be inserting an extra drill chuck on the pin chuck. Pin chucks also take part in other high-speed power tools, such as jig grinders and die grinders.
 

Independent chuck

The jaws on the independent chuck are allowed to move in a more flexible way. Most of the independent chucks would be equipped with four jaws. They have to be tested as qualified by the machinist. Featuring the independent working of jaws, the independent chuck is ideal parts accessory for gripping the cross-sections with or without circular lineups in extreme precision. 

The independent chuck is rarely used on holding tools or workpieces. It is mostly witnessed on indexing heads or lathes. There are chucks with high precision that uses ball thrust bearings to reduce the fracture produced during the closing mechanism. 

Compared to the non-self-centering independent chucks, there are also the four jaws chucks with self-centering. However, the self-centering independent chuck would sometimes suffer from a few disadvantages, which can only poorly grip on the designated objects, and failure to keep hex stock in position. 

If you choose to self-center the chucks with only three jaws, the out-of-uniform work would result in the failure of gripping. The jaws can be strongly worn out and the accuracy would only drop with permanent damage to the chuck.
 

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