Introduction to The Classification of CNC Lathe Turning Tools

CNC lathe can normal processing, in addition to machine tool hardware, system software and the most important tool is CNC cutting tool, CNC cutting tool is used for machining production of important tools, cutting tools including blades, grinding tools, tool bar, handle, etc. CNC lathe tool types are many, according to the use can be divided into outer circle turning tool, end tool, cutting tool, thread turning tool, and hole turning tool, according to the structure and divided into integral, welding type, machine clamp type, and special type.

In this article, YIJIN Hardware a CNC machining parts manufacturer will introduce the turning tools of the lathe for you according to the turning tool structure classification, turning tool material classification, and turning tool process classification:

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1. Classification by Tool Structure

①Integral Structure of Turning Tool: The main body of the tool is made of a blank without separation, and it is easy to grind into a sharp cutting edge. The tool has good rigidity and is suitable for small turning tools and processing non-ferrous metal turning tools.

②Welding Type of Turning Tool Structure: It is connected by the welding method, and the tool head and the tool holder are separated. The structure is compact and the manufacturing is convenient. It is suitable for all kinds of turning tools, especially small tools that are more prominent.

③Machine-Clamping Tool Structure: The blade is fixed on the tool holder with a mechanical holder, and the blade can be replaced after being blunt. It is a commonly used tool for CNC lathes, and the tool holder is reused.

④A Special Type of Turning Tool Structure: such as compound tools, shock-absorbing tools, etc.

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2. Classification by Turning Tool Material

①High-Speed Steel Tool: It is made of high-speed steel and can be continuously reground. It is a general-purpose tool for roughing and semi-finishing.

②Cemented Carbide Tool: Cemented carbide cutting tool: The blade is made of cemented carbide, used for cutting cast iron, non-ferrous metal, plastic, chemical fiber, graphite, glass, stone, and ordinary steel, also can be used to cut heat-resistant steel, stainless steel, high strength steel, tool steel, and other difficult materials.

③Diamond: The blade is inlaid with diamond, which has the advantages of extremely high hardness and wears resistance, low friction coefficient, high elastic modulus, high thermal conductivity, low thermal expansion coefficient, and low affinity with non-ferrous metals.Which can be used for non-metallic brittle hard materials such as graphite, high wear-resistant materials, materials, high silicon aluminum alloy, and other ductile non-ferrous metal materials precision processing.

④Other Materials: such as cubic boron nitride tools, ceramic tools, etc., are developing in the direction of rough machining and interrupted cutting of high-hardness alloy cast iron.

3. Classification by Turning Tool Process

①External Turning Tool: 93-degree external turning tool is mainly used for processing external circles and end faces, and the 35-degree offset tool is mainly used for external contour profiling.

②Inner Hole Turning Tool: 93-degree inner hole turning tool is mainly used for internal machining.

③Thread Turning Tools: Thread turning tools mainly include external thread turning tools and internal thread turning tools. Among them, external thread turning tools are mainly used for external thread processing, and internal thread turning tools are mainly used for internal thread processing.

④Grooving Tool: External grooving turning tool is mainly used for external grooving and cutting, and the internal grooving turning tool is mainly used for internal groove processing.

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4. Common Tools and Selection of CNC Lathes

Common Tools for CNC Lathes

The tools used on CNC lathes include cylindrical turning tools, drills, boring tools, cutting tools, threading tools, etc. Among them, cylindrical turning tools, boring tools, and drills are the most commonly used.

Tool Selection

  1. In actual production, the CNC turning tool is mainly determined from the tool sample according to the tool installation size, workpiece material, processing type, processing requirements, and processing conditions of the CNC lathe rotary tool holder. The steps are roughly as follows:
  2. Determine workpiece material and machining type (excircle, hole, or thread);
  3. Determine the grade and geometry of the insert according to the roughing and finishing requirements and processing conditions;
  4. Choose a holder based on holder size, blade type, and size.

Tool Installation

After selecting the appropriate blade and shank, first, install the blade on the shank, then install the shank on the rotary tool holder in turn, and then check the tool installation size through the tool interference diagram and the machining stroke diagram.

5. Matters Needing Attention

The following problems should be paid attention to during tool installation:

  1. Before installation, ensure that the arbor and the positioning surface of the blade are clean and free from damage;
  2. When installing the tool holder on the tool holder, make sure that the direction of the tool holder is correct;
  3. When installing the tool, make sure that the tool tip is higher than the rotation center of the spindle.


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