An intelligent production line simultaneously mixed assembly of three models, the assembly link in front of the completion of the operation of a car, the production line immediately according to the MES system Settings, adjust the equipment and process parameters, seamless assembly of another car... As the conveyor belt moves slowly, a new car rolls off the production line every 180 seconds, each with a different color and interior.
At the Lantu New Energy General Assembly in Wuhan, the machines roar, the calculations are silent and the production lines are getting "smarter".
"This is a flexible, intelligent charm, one production line can meet the production of all models." Lu Fang, CEO of LAN Map Automobile, told reporters that each car has a "digital ID card", and the digital code contains information about all the parts and production sequence of a car. The machine takes a look at the identity and starts grabbing the corresponding parts. Even if it is the same model, according to the individual needs of users, the flexible production line can complete the collinear and mixed flow production of thousands of models with optional schemes to achieve "thousands of cars and thousands of samples" and fast delivery.
In July this year, Lantu delivered a total of 3,412 new cars, up 90% year-on-year and 13% month-on-month, reaching 3,000 units for five consecutive months. Since the birth of the brand in July 2020, Lantu has completed the strategic layout of "three cars in three years, three categories in three years" when the brand was released.
"Process digital design and manufacturability design not only greatly improve efficiency, but also reduce the cost of trial and error for new products." Lantu automotive engineering and technical staff Liu Chang told reporters that for a development model, the enterprise has applied a large number of process simulation technology before mass production, simulate assembly in a digital environment in advance, and then put into actual production after the relevant indicators are mature, and the project cycle of new models is shortened from 36 months to 24 months.
Large vehicle design and production is more intelligent and efficient, small to the production of a screw on the production line, there are "data" to follow.
At the installation station of the final assembly wheel, after the tightening equipment receives the digital instruction issued by the system, the five tightening shafts rotate synchronously, and the tightening torque value data of the screw jumps in real time on the screen beside it.
Too tight screw easy to slip wire, too loose easy to fall off. Therefore, we set the tightening accuracy of ±2.5% in the system to ensure the consistency of the product production." Liu Chang said that the digital torque control system independently developed by the company can control the important torque of each vehicle 100% accurately, even the tightening data of a screw can be traced.
After walking out of the assembly workshop and tracing the production chain of new energy vehicles, the reporter saw that digital intelligent technology has been deeply applied in key links such as stamping, welding, painting, and resin of automobiles.
Among them, welding is an important part of automobile production. In the 23,000 square meters welding workshop, without manual intervention, the AGV car in accordance with the established route orderly delivery of parts, more than 430 models of different robots shaking, turning, welding, sparks splash, here has achieved 100% automation of the welding process.
Liu Chang to a smart electric SUV, for example, a body has more than 6800 solder joints, the quality of the connection points between the components determines the quality of the vehicle. After strict calculation of the diameter and pressing depth of all welding cores of the car body, the parameters are imported into the equipment. After welding is completed, the quality of the welding joint is verified by an ultrasonic detector. In terms of body size control, the biw size is monitored by the robot online measuring device. When the body size fluctuation exceeds the set tolerance range, the device will automatically alarm and send the information to the relevant engineers automatically. Intelligent manufacturing makes product quality more secure and wins more markets for enterprises.
According to reports, at present, Lantu has formed an annual production capacity of 150,000 vehicles, and is carrying out intelligent technology to promote the whole line. The developer platform is planned to be launched in the second half of this year, involving power, cockpit, intelligent driving and body fields, providing a unified interface for software developers and hardware manufacturers to explore more intelligent applications.
"Smart production is a big trend." Lu Fang said that it is necessary to accelerate the in-depth application of intelligent technology in the key links of new energy vehicle research and development, design, manufacturing, warehousing and logistics, operation and management, and after-sales service, and use new technologies and new products to build the competitive advantage of new energy intelligent networked vehicles.
(Source: Economic Information Daily)
