亚洲日本一区二区在线-亚洲日本一区二区三区在线不卡-亚洲日本一区二区三区高清在线-亚洲日本香蕉视频观看视频-精品国产自在天天线2019-精品国产自在久久

Sales Hotline

+86-13812297748

The history of stone machinery development process

Stone processing machinery has a long history. Since the human activities on the earth, there have been stone processing, so that archaeologists have divided the ages of ancient humans into the Paleolithic and Neolithic eras. In the Paleolithic period of 2.5 million years, stone tools were human labor. 8000 years ago, humans began to use stone axe, stone shovel, stone chisel and stone shovel, and the grinding discs and stone hammers, stone tablets and stone tools made by the human body are important things. Later, with the appearance of metal things, humans gradually grasped the methods of excavation and processing of various stone materials.

The stone wool board processing began to use a pendulum sand saw, the sawing machine structure was selected by rope hanging, and the feeding system was finished by gravity weight. The saw blade tensioning structure is tensioned by the wedge block. The abrasive is mainly selected from river sand, which is finished by artificial sand and water. The sawn plate has a small scale, uneven thickness and a large surface roughness. The processing technology is relatively simple, the product is single, the labor intensity is high, and the quality is poor.

In industrial innovation, all stone excavation and processing were completed by hand. It was not until the 19th century that Europe presented machinery for processing stone, which brought an innovation to the stone processing profession. In the future, stone machinery will be freed from the deep physical labor. Since then, the beginning of stone processing has been carried out from the technical operation to the mechanization.

Following the development of stone processing equipment and processing materials, a diamond structure sawing machine was presented for the processing of marble blocks. The feed structure and the tensioning structure are hydraulic, and the saw frame is selected for translation. The granite structure sand saw adopts the synchronous screw feed structure, and the sand adding system selects the active mixing sandblasting and water spraying system, and the processing power and processing quality are greatly improved.

Stone processing equipment has been developed with the introduction of new technologies, and its processing technology has also been continuously improved. The stone processing is carried out from the plate to the special shape, and then a series of special-shaped stone processing equipment such as a circular plate cutting machine, an arc plate grinding machine, a stone cutting machine and a numerical control engraving machine are presented. Stone processing equipment has also been continuously improved with the development of science and technology, from simple electrical control to PLC control and numerical control. The processing method is also carried out from machining to high-pressure abrasive water processing, laser processing, flame processing, and sandblasting. The auxiliary equipment is also moving from a single mechanical device to a numerical control and intelligent direction.

In the middle of the 20th century, the mechanized production and processing equipment of stone was rapidly developed in European countries such as Germany, France and Spain, which promoted the technological progress of stone processing machinery. In the late 1980s, Italy became a developed country for stone machinery manufacturing operations. In the future, many good stone equipment companies have been born in Japan, Taiwan, and China.

Since the 1980s, China's stone machinery manufacturing operations have continuously introduced advanced national technology, and has begun to form a complete stone processing machinery production system.
主站蜘蛛池模板: 国产精自产拍久久久久久蜜 | 国产伦精品一区二区三区免费 | 极品少妇高潮啪啪无码吴梦 | 一级毛片免费下载 | 欧美三级不卡在线观线看 | 一级毛片全部免 | 亲伦在线观看 | 亚洲无吗视频 | 中国农民真实bbwbbw | 亚洲欧美日韩一级特黄在线 | 欧美精品成人一区二区在线观看 | 老板揉搓秘书丰满大乳 | 国语自产视频在线不卡 | 三级在线网址 | 国产午夜精品一区理论片飘花 | 秋霞电影网午夜鲁丝片无码 | 成人毛片手机版免费看 | 18国产精品白浆在线观看免费 | 亚洲日韩国产精品乱-久 | 翁公与小莹在客厅激情 | babesvideos性欧美| 伊人久久大线蕉香港三级 | 日本人作爰啪啪全过程 | 国产无遮挡色视频免费观看性色 | 曰本少妇高潮久久久久久 | 九九99热久久精品在线6 | WWW国产色情在线观看APP | 在线亚洲视频无码天堂 | 在线免费观看毛片网站 | 日本护士性生活 | 国产亚洲精品久久久久久无码网站 | 老色哥网站 | 一边啪啪的一边呻吟声口述 | 国产精品亚洲精品日韩电影 | 亚洲日韩欧美国产中文在线 | 日本久久免费大片 | 国产高清美女一级毛片久久 | 超碰在线vip | 国产精品嫩草影视在线观看 | 国产性夜夜春夜夜爽1A片 | 97干97吻 |