Definition

Noun: A tailstock is the movable component of a lathe machine. It is mounted on the lathe bed, opposite the headstock, and can be slid along the bed to accommodate workpieces of different lengths. Its primary function is to support the free, non-driving end of a rotating workpiece, providing stability during machining operations like turning. Once positioned, it is locked securely in place.

Usage

The tailstock is a critical part of a lathe setup. * The machinist adjusted the tailstock to support the long metal shaft. * For precise drilling on the lathe, a drill bit can be held in the tailstock. * Ensure the tailstock is properly aligned with the headstock to avoid machining errors.

Advanced Usage

• Live Tailstock vs. Dead Tailstock: A "dead" tailstock has a stationary center point, while a "live" tailstock contains a center that rotates with the workpiece, reducing friction and heat.
• Tailstock Quill: The internal, telescoping spindle of the tailstock that extends and retracts is called the quill. Tools or centers are mounted in the quill.

Variants and Related Words

• Headstock (n): The fixed, powered end of a lathe that holds and rotates the workpiece.
• Lathe Bed (n): The heavy, rigid base on which the headstock and tailstock are mounted.
• Center (n): A pointed tool mounted in the tailstock (or headstock) to support the workpiece.

Synonyms

• Popper (n): A less common, informal term used in some workshops.
• Loose headstock (n): A descriptive synonym highlighting its movable nature relative to the fixed headstock.

Related Phrases

• To set over the tailstock: A technique where the tailstock is deliberately offset laterally from the lathe's centerline to machine tapered workpieces.
• Tailstock alignment: The process of ensuring the tailstock center is perfectly in line with the headstock spindle axis.

Noun

1. support consisting of the movable part of a lathe that slides along the bed in alignment with the headstock and is locked into position to support the free end of the workpiece