Deep Discussion: Analysis of the Development Trend of Mini Commercial Vehicles
Vertical machining center refers to a machining center with a spindle perpendicular to the worktable. Its structural form is mostly a fixed column, and the worktable is rectangular without indexing rotation function. It is suitable for machining disk, sleeve, and plate parts. The vertical machining center worktable is a T-groove worktable with a cross slide structure, which has two sets of motion mechanisms responsible for moving perpendicular to each other. The X-axis feed worktable is covered by the guide rail responsible for Y-axis feed. Vertical Machining Centers generally have three linear motion coordinate axes and can be equipped with a rotary table rotating along the horizontal axis on the workbench for machining spiral parts. Vertical Machining Center,Cnc Milling Machining Center,Machining Center For Metal,Vertical Machine Dongguan Liyang Intelligent Technology Co., Ltd , https://www.leyocncmachine.com
In the mini-vehicle market, the first camp consists of SAIC-GM-Wuling, Changan Automobile and Hafei. The second camp consists of Dongfeng Xiaokang, Changhe, FAW Jiabao and other companies. The third camp consists of newly entered Chery and Hainan Mazda. And Chongqing Lifan and other components. The products of these micro-vehicle manufacturers learn from each other technically, but each has its own characteristics.
Changan Product Analysis
There are four series of Changan mini-cars: Changan Star, Changan Starlight, Changan Star Card and Changan CM8. Among these four series, Changan Star Card is a minivan and the rest are minivans. The specific structural parameters are shown in the following table.
As can be seen from the table below, Changan Xingguang Chang’an Star has improved its performance. The length of the car changes from 3826mm to 3940mm, and the width of the car changes from 1500mm to 1580mm. The internal space of the vehicle increases, and the comfort of the rear seat increases. .
The Changan CM8 is a high-end product of Chang'an. It is an MPV model. This model has a large number of safety, economy, environmental protection, and electronic intelligence, in addition to the comfort, power, and other long security starlight. Promote. Jiangling Electronically Controlled Multi-point Injection III engine was selected to improve the fuel economy and environmental protection of the vehicle. The brakes were equipped with ABS (Anti-lock Braking System) and EBD (Electronic Brake Force Distribution System) to improve the safety of the vehicle. Sex.
The Changan Star Card (single and double row) was changed to a double beam on the basis of Chang'an Star to improve the carrying capacity. The specific parameters are as follows.
From the analysis of the structure of commercial vehicles and passenger vehicles in Chang’an, the drive type is rear-wheel drive, the front suspension is a car-type independent suspension, and the rear suspension adopts a variable stiffness and a small leaf spring to increase the load and enhance the ride comfort of the vehicle. Enhance the adaptability of the entire vehicle passenger and cargo; the brake is the front disc rear drum type, dual loop control system; the air intake adopts the air filter whose air temperature is automatically adjusted, which improves engine performance and fuel consumption. , improve the economic efficiency of the vehicle.
Chery Product Analysis
Chery's products include Ruiqi 2 minivans and Kairui 3 minivans. The specific parameters are shown in the table below.
As can be seen from the above table, Chery’s two models are more than 4m in length, more than 1.6m in width, and have a maximum speed of 140km/h and a wheel length of more than 1.4m. Judging from the performance of the entire vehicle, the vehicle's space size, power, economy, and safety are higher than those of other manufacturers.
In the entire vehicle structure, the vehicle layout of Ruiqi 2 and Kairui 3 is the front of the engine, the drive type is front-wheel drive, and the arrangement of the front-precursor has one more engine compartment at the front front, which can be more in the event of a frontal collision. Absorbing more energy can effectively prevent the external force from directly acting on the driver and improve the passive safety of the vehicle. In addition, a completely independent front engine compartment can better avoid engine noise and direct exhaust gas into the vehicle. Inside, it makes riding and driving more comfortable, which is not possible with the mid-engine structure that places the engine in the driver's seat.
SAIC-GM-Wuling product analysis
SAIC-GM-Wuling has formed two series of miniature commercial vehicles and mini passenger vehicles. Micro commercial vehicle products include miniature double-row trucks and miniature single-row trucks; micro-passenger vehicles include mini-business vehicles and mini-buses, for a total of four Large series of more than 200 varieties of models.
Among the micro-passenger vehicles, there are three product lines of Wuling Brilliance, Wuling Light and Wuling Hongtu. The specific structural parameters are shown in the right table.
It can be seen from the table that the light of Wuling is higher than Wuling's prosperity in various performance indicators. The length of the vehicle is changed from 3515mm to 3730mm, and the width of the vehicle is changed from 1445mm to 1510mm. The internal space of the vehicle increases, especially in the rear seats. People's comfort is improved; the track length is increased, and the lateral stability of the vehicle is improved; the maximum speed is increased from 93km/h to 105km/h, and the power performance of the vehicle is greatly improved.
Vertical machining centers characteristics:
1. Vertical machining centers structural characteristics: Vertical machining centers refer to spindle perpendicular to the workbench, with a relatively simple structure, small footprint, and relatively low price. However, due to the spindle being perpendicular to the worktable, the rotation axis of the spindle is perpendicular to the worktable, making the clamping and machining operations of the workpiece more convenient. Vertical machining centers are usually suitable for processing small workpieces and parts that require high precision.
2. Vertical machining centers application characteristics: Due to its simple structure, small footprint, and low price, vertical machining centers are usually suitable for processing small and medium-sized parts. It can perform various machining operations such as drilling, milling, turning, and grinding, as well as precision and semi precision machining with high precision requirements. Due to the fact that the spindle of a vertical machining center is perpendicular to the worktable, it is more convenient to clamp the workpiece and also helps to protect the tool and workpiece from damage.
3. Vertical machining centers processing characteristics: Due to its simple structure, small footprint, and low price, vertical machining centers are usually suitable for fine machining of small and medium-sized parts and high-precision machining of parts. It can perform various machining operations such as high-precision drilling, milling, turning, and grinding, as well as precision and semi precision machining with high precision requirements. Due to the fact that the spindle of a vertical machining center is perpendicular to the worktable, it is more convenient to clamp the workpiece and also helps to protect the tool and workpiece from damage.