Cutterhead gap adjusting method and device for disk shear
A gap adjustment method and a technology of a gap adjustment device, which are applied in the direction of shearing devices, shearing machine attachments, feeding devices, etc., can solve problems such as continuous cutting, burrs on the edge of strip steel, and changes in the gap between cutter heads, so as to avoid burrs Effect
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[0071] As an implementation manner of the embodiment of the present invention, the second calculation module may also include:
[0072] The fourth calculation module is used to substitute the T0 and the Tn into the formula Hn=(Tn-T0)×α×L1 to obtain the first length variation of the upper tool axis;
[0073] The fifth calculation module is used to substitute the B0 and the Bn into the formula Bn=(Bn-B0)×α×L2 to obtain the second length variation of the lower cutter shaft;
[0074] Among them, α represents the coefficient of linear expansion, L1 represents the length from the fixed position of the upper cutter head on the upper cutter shaft to the fixed end of the upper cutter shaft when the initial temperature of the upper cutter shaft is obtained, and L2 represents the length obtained when the initial temperature of the upper cutter shaft is obtained. The length from the fixed position of the lower cutter head on the lower cutter shaft to the fixed end of the lower cutter shaf...
Embodiment 1
[0078] 1. After assembling and calibrating the cutting blades of the disc shears, measure the initial temperature, L1 and L2 of the upper and lower cutter shafts on the same side of the strip steel. The temperature of the lower cutter shaft on the operating side of the strip is 25°C, and the length of L2 is 550mm; the temperature of the upper cutter shaft on the driving side of the strip is 25°C, and the length of L1 is 500mm; the temperature of the lower cutter shaft on the driving side of the strip is The temperature is 25°C, the length of L2 is 550mm, the gap between the upper cutter head and the lower cutter head on the operation side is 0.1mm, and the gap between the upper cutter head and the lower cutter head on the transmission side is 0.14mm.
[0079] 2. Turn on the machine for trimming of the strip steel. The width before trimming of the strip steel is 1280mm, the trimming edge of each side is 15mm, the thickness of the strip steel is 1.0mm, and the gap between the upp...
Embodiment 2
[0093] Continue trimming production on the basis of embodiment 1, specifically as follows:
[0094] 1. Measure the temperature of the upper and lower cutter shafts on the same side at the end of the rolling of the fifth coil, as follows: the temperature of the upper cutter shaft on the operating side is 30°C, and the temperature of the lower cutter shaft is 35°C; The temperature of the upper cutter shaft is 30°C, and the temperature of the lower cutter shaft is 40°C.
[0095] 2. Calculate the length change of the upper cutter shaft and the lower cutter shaft on the operating side as follows:
[0096] 0.5×(30-25)×15×10 -6 =37.5×10 -6 m, 0.55×(35-25)×15×10 -6 =82.5×10 -6 m
[0097] The length variation of the upper cutter shaft on the transmission side and the length variation of the lower cutter shaft are respectively:
[0098] 0.5×(30-25)×15×10 -6 =37.5×10 -6 m, 0.55×(40-25)×15×10 -6 =123.75×10 -6 m.
[0099] 3. Calculate
[0100] The gap compensation amount between ...
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