6.5　Rotary Trimming Shears

6.5.1　Installation of rotary trimming shears shall be in accordance with the following requirements:

1　Measure and adjust the longitudinal and horizontal centerline for base plate.

2　Measure the elevation and levelness of top sliding rail of base plate.

3　Measure and adjust the deviation of the centerline of cutting edge relative to the centerline of mill unit when installing shear body at the fixed side.

4　Measure the longitudinal and horizontal levelness of the fixed shear body.

5　Take the fixed shear body as a reference to measure and adjust the deviation of cutting edge centerline of shear body at moving side relative to the mill unit centerline.

6　Measure the height difference and levelness deviation of shear body at moving side relative to shear body at fixed side.

7　Take the shear body at fixed side as a reference to measure and adjust the centerline，elevation and levelness of the intermediate carrying roller.

8　The drive device installation of rotary trimming shears shall meet the requirements of technical design documents and current national standard，i.e.，"General code for construction and acceptance of mechanical equipment installation engineering"（GB 50231）.

6.5.2　Allowable deviation for rotary trimming shears installation shall be in accordance with those specified in Table 6.5.2.

Table 6.5.2　Allowable deviation for rotary trimming shears installation

6.5.3　The run-out at end-face of shear knife of rotary trimming shears shall meet the requirements of technical design documents.If there is no specification in the aforementioned documents，shall be in accordance with those specified in Table 6.5.3.

Table 6.5.3　Allowable deviation for run-out at end-face of shear knife of rotary trimming shears