Manual processing, accuracy up to millimeter (craftsman's skill)

【 Key points 】

Engaged in the machining industry for 35 years, Fu Guotao can skillfully operate all kinds of machine tools, drill two sheets of thin paper with twist drill, can ensure that the upper layer of paper smoothly through, and the lower paper does not damage. Over the years, he has successfully improved more than 10 kinds of tools and constantly improved the processing accuracy of products. In addition, the research group led by him participated in solving a number of machining problems in Marine low-speed machines, and realized the localization of key components.

Chongqing Hongjiang Machinery Co., LTD. Processing center technician Fu Guotao (see photo, Peng Yun photo) is a person who loves to think.

From turning, milling, boring and machining center operator, Fu Guotao is 35 years. Always struggling with machining, his study notes fill the shelves. "Technology is changing and we need to keep up and learn new skills." Fu Guotao said.

In the workshop workshop, Fu Guotao showed his "unique work" to reporters - he saw his left hand press the drilling machine operating table tightly fit two pieces of thin paper, the right hand grip the operation handle, manually control the amount of twist drill down cutting, twist drill high-speed rotation, blink of an eye, the drill through the upper white paper, leaving a round hole, while the lower paper intact.

"The test of the drilling paper is the sharpening of the tool and the control of the hand, the accuracy should be controlled within 0.01 mm, if the drill is equivalent to 1/5 of the thickness of the hair, it will scratch the lower paper." Fu Guotao said, "Our company mainly produces Marine engine fuel injection system, which is a key component to ensure the efficient and safe operation of ships, and the control of machining accuracy is extremely strict."

Growing up in a factory, Fu Guotao has had a strong interest in machinery since childhood. In 1986, Fu Guotao entered a technical school, determined to become a skilled worker. After 3 years of study, he joined Chongqing Hongjiang, starting from a lathe worker, engaged in mechanical processing work in the workshop production line.

After entering the factory for half a year, Fu Guotao passed the assessment and turned into a boring worker. Although never touched the boring machine during the school, but by studying hard, in the era of CNC boring machine is not yet popular, he has been able to process high-precision products with ordinary boring machines, and hand-grinding tools can replace high-value imported non-standard tools.

"My life is very simple, two points one line, except at home is in the company." Fu Guotao said with a smile. He immersed himself in research and gradually grew into the technical backbone of the factory.

In 2003, the factory introduced an imported horizontal machining center worth tens of millions of yuan, using all English operating procedures, equipment acceptance and debugging is a big challenge. When we are at a loss, Fu Guotao, who just entered the processing center, volunteered.

"The device comes with a '20mm thick' manual in English." Years of machining experience let Fu Guotao in life to develop the habit of "millimeter" measurement, "a positive or negative error in the program, it may cause major quality accidents, and the processing of a process to enter thousands of program instructions, no error." Fu Guotao said.

Check information on the Internet every night, explore advanced processing methods, check complex programming data... Through continuous learning, Fu Guotao gradually mastered the English version of the milling cycle program, which broke through the multi-end, multi-size and multi-thread hole processing that could not be completed by the ordinary program, and greatly improved the work efficiency.

For many years, Fu Guotao has cracked many technical problems, broken a number of processing "bottlenecks", improved more than 10 kinds of tools such as drill, turning tool and tap, and realized the localization of key components of key projects. The tool processing method figured out by Fu Guotao can make the rough milling cutter completely replace the fine milling cutter, and achieve zero cost of fine milling, which saves more than 60% of the tool cost for the company in this processing.

In 2016, Fu Guotao National skill Master Studio was established. He imparts his experience to the company's front-line workers in the form of mentors, on-site guidance, training lectures, etc., and constantly improves their operational level. In addition, he also took the initiative to make professional courseware, share experience and provide technical guidance to partner units, so that more people can master advanced processing technology.

With good guidance, Fu Guotao led the team members to solve many problems such as drilling ultra-deep holes and complex hole systems in horizontal machining centers, complex cavity sets of Marine low-speed machinery and high-pressure sealing surface processing.

Looking back on his 35-year career, growing from an ordinary mechanic to a national skill master, in Fu Guotao's view, craftsmen need to pursue perfection and continuous innovation. "We must vigorously promote the spirit of craftsmanship to cultivate more highly skilled talents." Fu Guotao said.