Definition

1. Noun:
   • Screw-cutting die, threading die: A hand tool used to cut external threads (screws) onto a cylindrical rod or pipe. It is a hardened steel disc with internal cutting teeth and flutes to remove chips.

Usage

• bàn ren is a technical term used in mechanics, metalworking, and plumbing.
• It is used with a tay quay bàn ren (die stock/handle) to hold and turn it.
• The process of using it is called ren (to thread) or cắt ren (to cut threads).

Examples

• Công nhân sử dụng bàn ren để tạo ren ngoài cho trục thép. (The worker uses a screw-cutting die to create external threads on the steel shaft.)
• Trước khi cắt ren, cần bôi trơn bằng dầu. (Before threading, you need to lubricate it with oil.)
• Anh ấy đã mua một bộ bàn ren với nhiều kích cỡ khác nhau. (He bought a set of threading dies with many different sizes.)

Advanced Usage

• bàn ren lỗ or bàn ren trong: Refers specifically to a tap, which is the tool for cutting threads (inside a hole), as opposed to the external threads cut by a bàn ren.
• ren hệ mét / ren hệ inch: Specifies the thread standard (metric or imperial) the die is designed to cut.

Variants and Related Words

• Tay quay bàn ren / tay cầm bàn ren (n): Die stock, die handle. The tool used to hold and turn the die.
• Dao ren (n): Threading tool (often refers to a lathe tool bit for threading).
• Ren (n/v): Thread / to thread.
• Cắt ren (v): To cut threads.
• Tarô / mũi tarô (n): Tap (the tool for cutting internal threads).

Synonyms

• Filière (n): The French technical term, also used in some Vietnamese contexts.
• Threading die (n): The general English term.

Related Phrases / Compound Terms

• Bộ bàn ren và tarô: A tap and die set.
• Bàn ren ống: A pipe threading die.
• Đường kính bàn ren: The die's diameter.

1. (kỹ thuật) Srew-cutter