The automotive industry has seen rapid growth, leading to increasingly stringent demands on production equipment. For manufacturers like Dongfeng Nissan, high efficiency, performance, and reliability have become essential in meeting the needs of modern vehicle production. The company aims to deliver the latest and most reliable driving experiences to Chinese consumers through advanced technology and world-class manufacturing. As Mr. Gao Zhenghao, Deputy Minister of the PT Department at Dongfeng Nissan Passenger Vehicle Company, stated, "Our future focus is always on providing customers with the most valuable products and services, enabling them to experience a rich and humanized mobile life. Our demand will also center on manufacturing the most valuable products. Therefore, when selecting production equipment, high quality and efficiency are our top priorities."
**Cost-effective automated machine tools offer efficient solutions**
Dongfeng Nissan’s strong position in the passenger car market and the intense competition in the industry mean that their requirements for production equipment are both high and carefully considered. “We first contacted EMAG in 2011, and since then, we decided to use EMAG’s laser welding equipment mainly because of its excellent cost-performance,†recalled Mr. Gao Zhenghao.
It was eventually decided to go with EMAG’s ELC 160 machine tool, which is used for press fitting, welding, and flaw detection of three gears—JR1, JR2, and JR4. The welding diameters are 61.565 mm (for the 1/2 gear) and 55.985 mm (for the 4 gear), using materials such as 20MC5 and 27MC5. The design requires a cycle time of 0.85 minutes, but the actual cycle time has been reduced to 0.7 minutes. Currently, the overall equipment efficiency reaches 90%.
Mr. Gao explained, “Before choosing EMAG’s machine tools, our main challenge was how to perform press fitting, welding, and flaw detection on a single piece of equipment. Previously, we were considering purchasing three separate machines for each process.†He added, “EMAG’s solution perfectly addressed our problem.â€
In the welding of the first gear, for example, the ELC 160 machine tool functioned as a multi-purpose unit, significantly reducing costs. It not only cut down on capital investment and floor space, but also reduced labor input by 0.5 employees per shift. Additionally, the machine achieved high-quality welding by properly selecting interference, welding power, and speed ratio. There was no need for post-welding turning, saving time and improving production efficiency.
“Having modern production equipment is a crucial part of implementing Dongfeng Nissan’s strategy,†said Mr. Gao. “EMAG equipment is stable and ensures high-quality products. At the same time, its high level of automation reduces labor costs and operator workload.â€
The ELC 160 integrates workpiece loading/unloading systems and the laser welding process, using CNC joint stamping technology to press the coupling body. All quality-related parameters are controlled by CNC and can be restored. During welding, the CNC system automatically identifies the welding object, and during testing, it performs one-to-one inspections of different workpieces. This results in a highly automated production process, lowering labor costs while ensuring high efficiency and product quality.
*The EMAG ELC 160 machine tool has realized a multi-purpose machine, reducing the capital investment and floor space of the three equipments, and greatly saving the cost for Dongfeng Nissan.*
Diesel Water Pump
Diesel Engine water pump is a common industrial equipment, which is widely used in agriculture, construction, engineering, fire protection and other fields. Its main function is to convert the power generated by the diesel engine into the power of water, so as to realize the delivery and supply of water. This article will introduce the working principle, structural characteristics, application fields and maintenance of diesel engine water pump.
The working principle of the diesel engine water pump is to use the power generated by the combustion capacity of the diesel engine to transmit the power to the water pump through the connecting rod mechanism, so as to drive the water pump to work. The working process of diesel engine water pump can be divided into three stages: water absorption, water pressure and drainage. In the suction stage, the diesel engine generates negative pressure through the up and down movement of the piston to draw water from the water source into the water inlet of the water pump; in the pressurized water stage, the piston of the diesel engine moves upwards to press the water into the pressurized water chamber of the water pump; in the drainage stage, the piston of the diesel engine moves downward to discharge the water from the outlet of the water pump.
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Vibropac Machinery Co.,Ltd , https://www.vibropac-power.com
