The eight-seat electric sightseeing car is a medium-sized sightseeing vehicle. The vehicle is of a moderate size and is suitable for sightseeing and sightseeing in scenic spots. It can carry less than 8 passengers at a time. It is safe and comfortable to ride. What are the characteristics of such a sightseeing car in terms of design? Take a look at the specific introduction.
First, from the perspective of vehicle chassis design. The eight-seat electric sightseeing car has strong practicality and is comfortable to ride and can meet the needs of sightseeing and sightseeing. The design of the chassis is the key design content of the vehicle and it plays an integral supporting role. In general, its front axle suspension is spring energy storage, rear suspension is a leaf spring type, and the vehicle has a rack steering gear, which can well control the overall direction. The technical parameters of the chassis of the eight-seat electric sightseeing car should be strictly implemented in accordance with the relevant standards. In order to ensure safety, it must be strictly tested before it can be used.
Second, from the perspective of the powertrain design of the vehicle. The design of the eight-seat electric sightseeing vehicle power system is mainly for the design and selection of motors and batteries. In terms of motor selection, we rarely use DC motors, because although this kind of motor has a mechanical steering gear, it will cause sparks on the surface of the steering gear at high speeds, which is very large for safety. Hidden dangers, at the same time, this type of motor is also costly to maintain. Generally used is an AC asynchronous motor, which is widely used for its small size and high efficiency. The battery of the eight-seat electric sightseeing car is a battery, and the main use is a lead-acid TV. This type of battery is relatively cheap, but it has a long service life and a relatively good electric energy saving, and can provide a larger battery life for an electric sightseeing car.
Third, from the perspective of the overall architectural design of the vehicle. The structure of the eight-seat electric sightseeing car mainly includes front and rear suspensions, axle frames and car tires. The suspension structure is composed of elastic elements, guide mechanisms and shock absorbers. These components can keep the vehicle running smoothly and reduce the impact of start and stop on the occupants. Axle frames are now made of light steel, which reduces the overall quality of the car and is safe enough to use. Radial tires are used for the selection of tires. It has a large area of ​​contact with the ground. The tires are thick and have bundle layers, which is an ideal tire configuration.
High Precision Machining is defined as a process of changing the dimensions or the performance of workpiece with machining facilities.
According to the temperature of the workpiece while in machining, high precision machining can be divided into cold working and hot working. Usually, machining under indoor temperature, and won't change cause chemical change or phisical phase change is named cold working. On the other hand, if under temperature, higher or lower than room temperature, which will lead to chemical changes or phase changes, it will be called as hot working.
For high precision machining, the machining tolerance can be up to 0.0001-0.001mm, the surface finish Ra can be 0.02-0.1um.
Machining precision is to describe the actual geometrical parameter of the part after machining, such as the size, the form, the position, comparing with the theoretical geometry parameter. The difference from these two parameters is the machining tolerance. The number of the difference show the machining accuracy, the bigger, the lower of the machining precision, the smaller, the higher machining precision.
High Precision Machining
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