CNC Milling is to use the rotating multitool to cut workpieces, such processing method is efficient. Tool rotate (background) while working, and the workpieces move (as a feed movement), workpieces can also be fixed, but at the moment, rotate tool must also move (at the same time to complete the main motion and feed motion).Milling machine has a horizontal milling machine or vertical milling machine, large gantry milling machine.The machine tool can be ordinary machine tool, can also be a nc machine tools. With rotating cutter as a cutting tool.Milling is generally conducted on milling and boring machine, suitable for processing plane, groove, all kinds of forming surface (such as spline gear and thread) and special shape mould surface, etc
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The product power covers 175-2000 bhp high-horsepower diesel engines; about 500% of the diesel engines in the domestic market, about 40% are produced here, and the market share is the highest in the country.
Sino-US joint venture, Chongqing Cummins Engine Co., Ltd. is striving to build a world-class high-power diesel engine manufacturing and supply base.
Domestic high-power diesel engine leader
Established in 1951, Chongqing Cummins Engine Co., Ltd. is dedicated to the design and manufacture of diesel engines. Its products include 11-50 litre series high-power diesel engines. Its power range covers 175~2000 horsepower. It is widely used in heavy-duty vehicles, engineering machinery, mining machinery and large scale Passenger cars and other fields.
The company has developed into a medium-sized joint venture with an annual output of 16,000 engines, annual sales revenue of 2.2 billion yuan, and more than 1,300 employees.
According to relevant person in charge of Chongqing Cummins Engine Co., Ltd., in the domestic market, about 40% of high-power diesel engines with a power of 500 horsepower or more were produced from Cummins, and the market share was the highest in the country. In the future, companies will strive to create a world-class high-horsepower diesel engine manufacturing and supply base and strive to double sales revenue in five years.
In addition to gaining greater market share, Cummins's large-horsepower diesel engines will also implement global sales, global warranty and other ancillary service measures to optimize customer value and create a continuous market competitive advantage.
Electronically controlled diesel engine into a fist product
In 2007, Chongqing Cummins introduced the latest full-electric 19-liter (QSK19, inline 6-cylinder, 500-760 hp) and 38-liter (QSK38, V-type 12-cylinder, 900-1500 hp) high-horsepower diesel engine technology synchronously with Europe and the United States. This technology can meet today's European and American non-road mobile equipment emission standards (US EPA Tier 2 and Tier 3 and Europe Stage IIIA).
In September last year, the first locally produced Cummins QSK19L horsepower electronically controlled engine was off the assembly line, marking that Chongqing Cummins completed the leap from machinery to EFI, and also indicated that Chongqing Cummins has taken the lead into the domestic high-horsepower EFI. Engine technology.
The introduction of QSK EFI engine technology fills the blank of the domestic high horsepower engine EFI technology, enriches and improves the Chongqing Cummins high horsepower engine product series, consolidates the leading position of Chongqing Cummins, and forms a new core competitiveness. The development of the equipment manufacturing industry in Chongqing and even China provides a quality heart.
At the same time, the QSK19 and QSK38 series fully electronically controlled diesel engines fully utilize the processing capabilities and manufacturing resources of Chongqing Cummins' existing 19-liter and 38-liter mechanical engines, significantly reducing the preparation period for localized production, lowering manufacturing costs, and taking the lead in acquiring complete Meet the international environmental protection requirements of the high-power engine emissions permit, which will become a new generation of Chongqing Cummins high-end market for domestic and foreign competitive products.
New energy development investment is not capped
In the future development of the automobile, new energy has become a trend. Chongqing Cummins has also accelerated the pace of research in its commitment to new energy. Among them, natural gas engines have become an important step for Cummins in the future exploration of new energy engines.
As the world’s climate deteriorates and oil prices rise, countries around the world are seeking to replace diesel with other fuels. At present, Chongqing Cummins is also actively seeking the feasibility of gas engines using gas, coal bed methane, and biogas as fuel.
Xia Hongbin, general manager of Chongqing Cummins China, said that the company has now started to investigate the market prospects of natural gas engines in China. Although the survey data has not yet been released, it is believed that this engine will cause a new revolution. It is reported that in June of this year, the research results and research and development of this work will be put on the agenda of the company's board of directors.
Mr. Xin Deli, general manager of the company, said that in the research and exploration of new energy engines, such as natural gas engines, the company has adopted the "uncapped" approach. In other words, as long as the research needs of new technologies, the company will be willing to invest more than expected funds, hoping to take the lead in new energy engines.
Business background
Chongqing Cummins Engine Co., Ltd. (hereinafter referred to as CCEC), formerly known as Chongqing New Machinery Factory and Chongqing Automobile Engine Factory, was established in 1951 and has a 59-year history of diesel engine design and manufacturing.
In 1981, Cummins and the original China National Heavy Duty Truck Group formally signed a license agreement and began production of Cummins high-power diesel engines in Chongqing. In October 1995, Sinotruk Group and Cummins Engine Co., Ltd. of the United States each invested 50% to establish a joint venture CCEC. This is the starting point for Cummins' local production in China and Cummins' largest heavy-duty and high-horsepower engine manufacturing plant in China. .
Chongqing Cummins Inc.'s products include the 11-50L high-horsepower engines of the M11, NT, K19, K50, QSK19 and QSK38 series. The products are suitable for heavy-duty vehicles, large passenger cars, mining machinery, track machinery, and construction machinery. The annual output of engines is 16,000 units. Annual sales income exceeds 2.2 billion yuan.
The characteristic of the CNC Milling is:
(1) cutter blade periodically participate in continuous cutting.
(2) each blade in the process of cutting, cutting thickness is variable.
(3) each tooth feeding alpha f (mm/teeth), said cutter every turn a blade workpieces relative displacement of time.
November 22, 2023