Dongfeng School Bus reminds us of the most easily overlooked problems in the use of transmissions

The maintenance frequency of the transmission varies according to the degree of use of the car.

Here are some of the issues that we usually easily overlook:


1, the driver's car, whether it is changing to high gear or low gear, should try to shift at the appropriate speed, to avoid the car suddenly slow down or shake between shifts. At the same time, remember that the clutch must be fully depressed when shifting.


2, when the car moves forward, avoid changing to the reverse gear; Similarly, when the car is sliding backwards, avoid shifting to the forward gear, we must wait for the car to completely stop and then shift gear.


3, When you stop on an uphill slope due to red light or other reasons, you should use the brake to stop the car. Never use the power of the engine to drag the car to prevent it from sliding backwards. For example, some drivers like to use half-clutched clutches and half throttles to keep the car from moving backwards, but doing so can cause wear to the engine and transmission.


4. When starting a geared car, don't have the habit of putting your feet on the clutch, because it will also accelerate clutch wear.


5, When you must temporarily stop for a while, you should switch to neutral or turn off the engine.

CNC Turning

CNC Turning is namely Lathe machining, Lathe machining is a portion of mechanical processing.

Lathe machining is always a process that turning tools doing turning machining to a rotary workpiece. On CNC lathes, the operators or the engineers also can use drills, reamers, screw taps, threading dies and knurling tools to make relative machining work. CNC turning is usually applied to machining shafts, plates, bushings and all other workpieces which have rotary surfaces, it is a very widely application in practical mechanical manufacturing.

CNC turning can be divided into rough turning and finish turning, rough turning is for the purpose of machining with big cutting depth and big feed rate, to improve the machining efficiency. However, the precision of rough turning can only be grade IT11, the surface finish can only be Ra 20-10um. On the contrary, semi-finish machining and finish machining usually can only apply high speed but small feeding rate and cutting depth. In this condition, the machining accuracy can be up to grade IT10-7, the roughness can be Ra10-0.6um.

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