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What is a tooth cutter? Application of PTIR/L carbide internal-hole tooth cutters.
time：
2026-02-04 10:44
source：
Lizhou
What is a dental knife?
The dental knife is also called Thread turning tool It is a specialized cutting tool designed specifically for threading operations. Its primary function is to cut standard-threaded structures on the outer cylindrical or inner bore surfaces of workpieces. Unlike taps, thread-cutting tools form threads one cut at a time through CNC turning processes. They are particularly suitable for machining applications that demand high precision, involve small hole diameters, or require processing of harder materials. In lathe operations and precision machining, thread-cutting tools are indispensable and essential tools for internal threading.
Why is it difficult to machine internal threads in small-diameter holes?
In actual machining, internal threads are often more challenging to produce than external threads for the following reasons: The hole diameter is small, the overhang is long, and the cutting space is severely restricted. Once the rigidity is insufficient, it becomes easy to experience tool chatter, thread misalignment, dimensional instability, or even direct tool breakage. Moreover, certain workpiece materials with high hardness and high stickiness can further exacerbate edge wear and increase machining risks.
PTIR/L Structural features of internal-hole broaches:
PTIR/L The internal thread cutter is designed specifically for machining small-diameter internal threads. This series features an integral carbide-ground structure and all-tungsten steel blades, offering superior rigidity and bending strength. Even under conditions of slender tool shanks, it can still maintain stable cutting performance.
In terms of blade edge design, PTIR/L The dental knife features an optimized rake angle and blade geometry, and its surface is coated with an imported coating that delivers exceptional wear and heat resistance, enabling it to machine materials with hardness levels up to... HRC60 Capable of machining internal threads in a variety of high-strength materials.
What materials is the dental knife suitable for machining?
The internal-thread milling cutter is suitable for use in industries such as aerospace, medical devices, mold manufacturing, and energy equipment. These sectors have extremely high requirements for thread accuracy and precision. Traditional tap tools or conventional threading cutters often struggle to ensure long-term stable machining performance, whereas solid carbide internal-thread milling cutters can significantly improve yield rates and processing efficiency.
Lizhou Tools has long been focused on high-difficulty, small-space cutting applications. PTIR/L The internal thread cutter is specifically designed as a solution for machining small-diameter internal threads.
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