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In the paper, it is elaborated the problem that chamfer at edge of backup roll is prone to gradually wear to be disappeared during its service and grinding processes more than once on site. In early stage, the manual grinding is adopted to chamfer at edge of backup roll with angle grinder so that the processing efficiency is low, human cost is high as well as accuracy to size and shape of chamfer is difficult to be guaranteed. If they are not repaired in time, there will be crushing stress between backup roll in online use and edge of intermediate roll so that cracks are easily induced and extended further. In late stage, a type of automatic grinding equipment for chamfer at edge of backup roll is designed and developed so that the efficient and high-precision grinding of chamfer could be realized. The labour intensity of operating personnel could be reduced to guarantee operation safety and chamfer could be ensured to be uniform so that dimensional precision could meet the operating requirements.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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