A few years ago, I met with General Manager Zhang Fengming of Zhengzhou Diamond Precision Manufacturing Co., Ltd. (Zheng Drill). At the time, I really didn't associate him with a superhard tool manufacturing technology expert. It didn't feel like he was born in the class. At best, at best. It is a rich boss. The specific affairs are the responsibility of the company's subordinates. If it wasn’t for the recent visit of Zheng Cheng’s old president to Zheng Zheng’s in-depth visit, it is estimated that my understanding of Zhang’s and Zheng’s “true face†will take time.
Thoughtful Zhang total
Exploring how Zhang always does the superhard tool manufacturing, Zhang always said humblely that he was halfway. In fact, it is really not entirely. Zhang has a relationship with the tool, especially with the tool material diamond. Because Zhang was a diamond trader when he was young, although he had experienced the rough but the wind and water, the properties of diamonds were clearly understood by him. In addition to Zhang’s extreme intelligence, he was able to endure hardships. Zhengzhou Diamond Precision Manufacturing Co., Ltd. was established in 1997 after a rich initial accumulation.
Although the diamond is well known, but the tool is made, especially the tool, the knowledge is big. Although Zhang is not a graduate of the class, it is definitely a good idea to delve into the tool technology. At present, the 160 patented technologies owned by Zheng Drill and the more than 4,500 kinds of tools developed by the company have emboldened Zhang’s efforts and called it “the tool expertâ€. Not only personally involved in product research and development, Zhang Zong, who is in his 60s this year, visited customers to run the market and collect information. It is also unambiguous. The employees of the company kindly call him a "salesman."
According to the employees, Mr. Zhang is very caring for the company's employees, covering all aspects of the employee's body, life and work. For example, every employee of the company has a dormitory, can take a nap at noon, and can live when it is not convenient to go home at night; the refrigerator, TV, and air-conditioning in the dormitory are all available, and the minimum standard is three-star hotels; The food company is free of charge, and the cooking oil and ingredients used are very particular. They don't fool employees, just like family members. There is a coffee break at work, free coffee is free to drink. If you are on a business trip, you must sleep in a sleeper to ensure that employees go to the restaurant. The user site can work mentally and so on, and it reflects the care of employees everywhere.
Zheng Drill's characteristics and technical advantages
In Zheng Zheng, the technology is not high or low, because 20 years of experience tells them that every technical detail involved in a small tool will determine the cutting efficiency and service life of the tool. From the selection and determination of cutting material grades, microstructure design, cutting geometry to tool manufacturing and inspection, every step can not be slack, because they must ensure that the accuracy of each knife is controlled within 0.005mm, which is the basic Claim.
High level of customer personalized design
Zheng Drill uses its high level of design capabilities to design products based on the individual needs of customers. The key technologies of tool design mastered by Zheng Drill include: PCD tool structure precision design technology; PCD tool high-speed milling dynamic balance key technology; tool blade process key technology; PCD tool geometry parameter calculation and setting (for tool parameter design calculation) Tightly combined with temperature and stress distribution factors when cutting workpiece materials; PCD tool material failure mechanism verification method; PCD tool chip breaker structure design technology (different groove structure will affect workpiece material chip shape and chip removal effect); PCBN material Configuration with tool geometry parameters; tool setting method design, main cutting edge shape design technology. It has a high level from the design stage.
Taking the automobile ball cage type isometric high speed milling special cutter as an example, the PCBN ball end milling cutter was successfully developed and put into the market in 2013. This product solves the reliability and stability of the operation of the automobile manufacturing transmission system. The issue of sex and safety was the only manufacturer in China that had the design and manufacturing capabilities of PCBN ball-end milling cutters (only three in the world). The product calculates the contour of the cutting edge by establishing a mathematical model of the fairway, thereby realizing the cross-sectional shape of the fairway and completing the design and processing of the contour shape of the tool used for processing the fairway. The successful development of this tool has broken through the technical barriers that have not been overcome in China's car manufacturing industry for 20 years.
Advanced technology and equipment
Since the hardness of tool materials such as PCD, PCBN, CBN is significantly higher than that of conventional tool materials, the manufacturing processes such as sharpening, electro-erosion, welding, negative chamfer passivation, polishing, edge strengthening and refining are more difficult. Accuracy and reliability of use are difficult to meet design requirements. To this end, Zheng Drill purchased more than 200 imported equipment, valued at nearly 400 million, creating the necessary conditions for the high level of process manufacturing. This kind of generous investment is rare in the same industry.
Difficult, multi-variety, small batch production mode
The personalized demand (order system) is destined to be a multi-variety, small-batch, and highly difficult production model. If you want to meet the individual needs of your customers, you must have strict management to match this production model.
Strict and perfect product quality inspection system
Unlike other companies, Zheng Drill can see the detectors everywhere, whether it is a processing workshop or a testing room. General Zhang said that there are no more than 300 types of testing instruments of all sizes, up and down the whole company. Not only do each operator in the processing shop need a detector, but the quality inspectors need to use it. In addition to the final inspection before leaving the factory, three tests are indispensable. The combination of self-inspection and sampling inspection, not a trace of luck, strict quality control, never send unqualified products to customers. This strict quality control system makes the customer acceptance of Zheng Diamond products very high.
Guaranteed 24-hour service
"The best products can't guarantee that there will be no problems, even if the problem is not on the product, it may be caused by improper use of the user." Zhang’s words are not without reason. In order to help customers solve problems within 24 hours and minimize user losses, Mr. Zhang stipulates that after-sales personnel can never take the train by plane, and taxis never take the bus. The number of Zheng Drilling after-sales service personnel is far more than that of sales personnel. All these measures are to get to the scene as soon as possible to serve customers with high quality and efficiency.
Look at the world
Although Zheng Diamond's products are selling well in the domestic market, especially in the automotive sector, Zheng Diamond began to prepare for the opening of the international market 10 years ago. The annual exhibitions that must be attended are the four major exhibitions of international machine tools, namely Beijing CIMT, Chicago IMTS, European EMO and Tokyo JIMTOF. Zheng Diamond also has the strength to participate in international competition. At present, Zheng Diamond has established long-term and stable cooperative partnership with hundreds of well-known dealers at home and abroad, and is well prepared for going global.
Technical advantages
After painstaking efforts, Zheng Drilling Co., Ltd., 20 years after its establishment, has the ability to provide comprehensive tooling products and technical solutions for all semi-finishing and finishing operations of automotive engine blocks and cylinder heads. Customization of non-standard tools. More than 90% of the super-hard tools involved in the engine's key components can be localized and replaced.
Taking all-aluminum engine block processing as an example, a total of 15 processes involve more than 150 kinds of tools, including 38 kinds of PCD finishing tools and 2 kinds of honing tools, including combustion chamber surface, oil bottom surface, tile cover joint surface and clutch surface. , controller surface, crankshaft hole, cylinder hole rough, semi-precision, fine boring, cylinder hole honing process. The average service life of the face milling cutter is more than 10,000 pieces, and the average life of the hole machining tool can reach more than 30,000 pieces.
The cylinder head is processed in a total of 16 processes, involving more than 160 kinds of tools, including 49 kinds of PCD tools, CBN tools occupy 14 tools, including the inlet and exhaust faces and the milling of each end face, the bottom and bottom of the intake and exhaust pipe, the race Bottom hole, tappet hole, positioning pin hole, spark plug hole, nozzle hole and other processes.
In 2014, as one of the tool bidders, Zheng Drilling and bidding with the German and American counterparts to bid for the red flag flagship power v12 engine overall matching tool plan, the drilling tool provided by Zheng Drill has been repeatedly and rigorously demonstrated by practice, which is more than twice that of the same industry. The efficiency stood out and won the bid. In the same year, Zheng Ding won the competition with foreign counterparts and entered the China Aviation Collection Platform.
Application of advanced technology
(1) Micro-processing and detection technology of diamond cutting edge
Diamond tool blunt technology is recognized in the industry as a difficult process for manufacturing superhard tools. The traditional blunt round uses a brush tool, the blunt circle is rough, and the cutting edge of the tool has a poor microstructure. Zheng Drill uses advanced special blunt round equipment to match the special blunt round detection instrument. It can detect in real time during the blunt round process, accurately control the accuracy of the blunt circle (up to the micron level), and ensure the advanced nature of the micro-processing process of the diamond cutting edge. Tool accuracy.
(2) 3D forming processing technology for the edge of the superhard tool blade
The chip breaker is the key structure of the super-hard tool. During the high-speed cutting process, the chip can be chipped in time to prevent the chip from being scrapped and scratched. However, it is very difficult to process a microscopic groove structure with complicated shapes on a super-hard material, and an ordinary grinding machine cannot complete the chip breaker forming process. By introducing advanced equipment and applying laser technology, the company realizes 3D forming of the chipbreaker of the super-hard tool. At the same time, this laser 3D forming technology belongs to non-contact processing, and the machining process does not damage the tool, thereby improving the surface quality of the super-hard tool and greatly improving the production efficiency.
The development and mastery of these top technologies has made Zheng Diamond stand out in the cutting tool industry in China. "There are problems, looking for Zheng Drill" has formed a tacit understanding between Zheng Drill and the majority of users. It is also based on the trust of users. In the case of many orders and tight delivery times, in the face of difficult bones, Zheng Drill can conduct on-the-spot investigation, analyze the causes of problems, determine research ideas, conduct basic research and a large number of cutting tests, etc. To solve many problems of users.
Future development ideas
As a national brand, “Zheng Drill†has taken the responsibility of revitalizing China's manufacturing industry as its mission and began to plan for the longer term: from non-standard tool customization to system technology matching solutions, so that the service level will be upgraded and replaced.
At present, Zheng Diamond has set up a new factory in Tianjin and Chengdu. The future division of labor is: Tianjin factory mainly produces PCD/PCBN standard blades, Zhengzhou factory produces non-standard tools for automotive fields, and Chengdu factory produces non-standard tools for aerospace industry. . I believe that after unremitting efforts, Zheng Diamond will shine like a diamond in its name.
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