There are no accidents in the process of processing. If this premise exists, there is no problem for the engraving machine to work, but in fact, there is no accident in the long-term batch processing. At this time, the work will be "not easy". The main problems are as follows: the difficulty of tool adjustment lies in accurate positioning and the on-site difficulty lies in repairing the defects in processing, which may lead to the low positioning accuracy of tool cutting, affecting the precision of finished products, and the need for repeated processing to reduce the processing efficiency if there is no way to repair on site.

Ball head cutter is the most ideal tool for semi-finishing and finishing of curved surface: the spindle motor we use has a poor ability to resist axial force. Therefore, ball head cutter can not be used for rough machining (axial cutting force is too large) in general, but it is good to use ball head cutter in semi-finishing. After semi-finish machining with ball head cutter, there is less residual material, which is more conducive to the following finishing. The path spacing of semi-finish machining is generally two times of the finish machining spacing. If the method of parallel section is used, it is better to form 90 degrees with the tool path direction of finish machining. Reduces the actual cutting radius: just like the use of the oxnose knife, the use of the ball head knife reduces the actual cutting diameter, reduces the cutting line speed, reduces the cutting power and cutting torque during the cutting process, and is more conducive to the spindle motor processing in a more OK state.

DSP system has the following characteristics: convenient interface, convenient programming, good stability, high reliability, high precision, convenient integration, suitable for portable and embedded products and equipment. Compared with the control system composed of personal computer, it has the following advantages when applied to the CNC engraving system. The driver controls the current of the motor coil and the corresponding electromagnetic field and electromagnetic torque according to the pulse/direction command sent by the controller, so as to make the motor shaft rotate in proportion to the pulse/direction command. Different types of motors need different drivers. If stepping motor is equipped with stepping driver, DC servo motor is equipped with DC servo driver.

Common casting defects of ordinary steel castings include porosity, shrinkage, sand inclusion, slag inclusion, crack, sand adhesion, looseness, segregation, etc. These defects are caused by different wave patterns in the test. In this test. The surface is known to be a crack, but the reflected wave of the internal defects of the workpiece is caused by cracks or other casting defects, so waveform analysis is required. The flaw in this flaw detection is that the amplitude echo height of the reflected wave is large, the amplitude is wide, and there are multiple peaks; When the probe is translational, the reflected wave amplitude changes continuously; When the probe is rotating, the wave peak moves up and down. Therefore, it can be judged that it is the reflection echo of the crack.