1. Flatness Calibration
(A) First, check the flatness to confirm the degree of deformation and whether there are local warps;
(B) For blades with significant deformation, assess the internal and external softness based on shaking rigidity. If the inside is soft, adjust the edges; if the outside is soft, adjust the middle; generally, soften between the processing holes and the teeth;
(C) For local warps: first, oil the platform, rotate the blade on the platform once, then flip it and press the warped area gently.
2. End Runout Calibration
(A) First, check with the runout gauge to confirm the high and low points;
(B) Determine the adjustment based on the size of the high and low points, raising the low point;
(C) Generally, avoid touching the teeth and try to lower the adjustment.
3. Tension Calibration
The method for tension calibration varies by condition:
(A) When tension is insufficient: adjust the negative or zero-tension blade to positive tension.
a. Set the tension ring approximately 1/3 from the center;
b. Determine the position based on the previously mentioned (90-degree tension value);
c. The rolling pressure must be sufficiently high.
(B) When tension is excessive: reduce or eliminate the excessive tension.
a. Set the tension ring approximately 1/3 from the outer edge;
b. Reduce the rolling pressure;
c. Create uniform tension.
Tension must be consistent in all directions, but achieving uniform tension requires experienced technical expertise. Additionally, the circular gauge displaying tension status can be used for assessment. It is important to measure the deflection at the 90-degree position from the force application point and the stress state within that area.