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Cometech QC-640 Impact Specimen V-Notcher | 30–700 m/min, ISO/ASTM Block Gauges, Type A/B/C Cutting Knives
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- Specimen notching device used to cut standard V-shape notches for impact testing to help improve repeatability and accuracy.
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- Adjustable notch depth and adjustable cutting speed to suit different materials and reduce cutting effects.
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- Supports ISO and ASTM specimen setups with block gauges and standardized blocks; includes dial indicators for height measurement.
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- Equipped Type A cutter (45°, r=0.25) and supports additional Type B (45°, r=1.0) and Type C (45°, r=0.1) cutting knives.
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Overview
Cometech QC-640 Impact Specimen V-Notcher is designed to cut standard V-shape notches on impact-test specimens.
Because notch geometry strongly affects impact-test results, the QC-640 provides controlled cutting with adjustable speed and adjustable notch settings, helping users achieve steadier and more accurate specimen-test outcomes.
Notch type depends on the standard, so the machine supports different cutter configurations to match ISO/ASTM requirements.
Key Functions
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- Cut standard V-shape notch for impact test specimens.
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- Selectable cutter types (depends on standard).
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- Adjustable notch depth.
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- Adjustable cutting speed.
Specifications
| Model | QC-640 |
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| Cutting speed | 30–700 m/min |
| Speed setting | Finger flicking switch with 5–99 adjustable speeds |
| Specimen size | Max. length: 14 cm Width: 3–13 mm Height (cutting surface): 10–13 mm |
| Specimen length | 8.0±0.2 mm (ISO) 10.16±0.05 mm (ASTM) With block gauges, easily switch to other specimen type |
| Cutting depth / cutter types | Type A cutting knife 45° r=0.25 (equipped) Type B cutting knife 45° r=1.0 Type C cutting knife 45° r=0.1 |
| Accessory | ASTM, ISO standardized blocks Dial indicator ×2 (measuring height of specimen and height after cutting) Cleaning brush, opening wrench, hex wrench |
| Power | Single phase 100–240 VAC |
| Dimension | 48 × 37 × 35 cm |
| Weight | 40 kg |
Support materials
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- Test video, teaching material, SOP, and test case (availability depends on configuration and region).