The BHO-CB notch cutting machine is designed for preparing polymer specimens for Charpy and Izod impact testing by semi-automatically machining standardized V-shape notches in compliance with relevant international standards.
A notch is intentionally introduced into an impact specimen to create a controlled stress concentration point ensuring that fracture initiates at the specified location during testing
The critical performance factors of a V-notch cutting machine include the use of a high-hardness precision cutting blade with a specified geometry, including notch angle, root radius, and rotational speed (RPM). To ensure accurate and repeatable impact test results, the specimen must be free from cracks or defects before notching, and the machined notch must comply with the specified depth, angle, and root radius requirements.
During operation, the specimen is securely clamped on the machine stage and precisely positioned using a three-axis adjustment mechanism (X, Y, and Z). The notch depth is accurately adjusted and verified using a height adjustment mechanism (bolts) equipped with a dial gauge with a resolution of 0.01 mm, ensuring precise notch preparation.
The machine is equipped with a transparent Plexiglas safety guard to protect the operator from cutting chips and accidental specimen ejection. The safety interlock system prevents machine operation when the guard is not properly closed.