CNMM刀片
CNMM insert angle:0° Negative rake insert with a single-sided chipbreaker;
80°菱形车削刀片;
Primary workpiece material: stainless steel, steel, brass, bronze, aluminium and cast iron;
Breaker application: Rough, heavy, semi-finshing;
Matching TurningTool Holder: PCBNR/L, PCLNR/L, MCLNR/L,MCBNR/L;
Grade: CVD;
Material : Tungsten Carbide
CNMM Insert Specifications
Heavy and semi-heavy machining require chip breakers designed for the task. Wide chip breakers optimize chip control at large depths of cut and high feeds. Cutting edge strength is maximized with a flat, negative land design. Conversely, finishing operations benefit from smaller chip breakers to facilitate chip breaking due to reduced cutting force. In finishing, prioritize cutting edge sharpness with a positive land and small edge honing. CNMM insert excel in roughing applications.
CNMM insert tool holder
MCLNR/L
CNMM insert Introduction
1. Dimensions
- 形状: 夹角为 80 度的菱形(菱形)。
- 间隙角: Negative (typically in the range of -5 to -7 degrees).
- Tolerance: Medium (‘M’) is typical, but other tolerances may exist for specialized needs.
- 内切圆 (IC): Determines the overall insert size (common: 12.7mm, 16mm).
- 厚度: Impacts strength and cutting edge count (common: 4.76mm, 6.35mm).
- 拐角半径: Affects strength and surface finish (common: 0.4mm, 0.8mm, 1.2mm).
2. Chipbreaker Geometries
- Hugely Important: Chipbreakers shape how chips form and break, ensuring efficient chip flow, tool protection, and workpiece finish.
- Manufacturer-Specific: Chipbreaker designations are coded into the CNMM code (the “MM”). Refer to manufacturer catalogs for the specifics.
- Match to Operation: Consider:
- 工件材质
- Depth of cut (light vs. heavy)
- Desired finish
3. Hole Configuration
- Central Hole: For secure clamping on toolholders.
- Hole-less: Rely on alternative clamping mechanisms.
- Toolholder Compatibility: Essential to match the insert’s hole configuration to your toolholder.
4. Coating and Substrate
- 涂层: Common types include TiN, TiAlN, CVD, and PVD. Each offers different wear resistance, thermal properties, and suitability for various materials.
- 基质: The base carbide material the coating is applied to. Compositions vary, offering toughness vs. wear resistance trade-offs.
- Application-Specific: The right grade is crucial for optimal performance and tool life.
CNMM Insert Dimensions (ISO)
ISO 名称 | 内切圆 (IC) | 厚度 | 拐角半径 |
---|---|---|---|
CNMM 120404 | 12.7mm (0.5") | 4.76mm (0.187") | 0.4mm (0.016") |
CNMM 120408 | 12.7mm (0.5") | 4.76mm (0.187") | 0.8mm (0.031") |
CNMM 120412 | 12.7mm (0.5") | 4.76mm (0.187") | 1.2mm (0.047") |
CNMM 160608 | 16mm (0.63") | 6.35mm (0.25") | 0.8mm (0.031") |
Example: CNMM 120408
- Rhombic (diamond) shape with an 80-degree included angle
- Negative clearance angle
- Manufacturer-specific details within the “MM” designation
- 12mm inscribed circle diameter (approx. 0.47″ 以英寸来算)
- 4mm thick (approx. 0.157″ 以英寸来算)
- 0.8mm 刀尖半径(约 0.031″ 以英寸来算)
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硬质合金刀片是目前最通用、最耐用的切削工具之一。但它们是如何制作的呢?是什么让他们如此强大?在本视频中,我们将探索硬质合金刀片背后的科学,从碳化钨的特性到制造工艺。