What is need in the CNC machining?
The required tools for the operation of CNC machining equipment include diamond cutting tools, tool arc detection devices, cutting oil, chip collecting devices, etc. The influence factors of diamond cutting tool on work piece error in CNC are arc shape, radius and waviness. In general, diamond cutting tools will be shaped as circular arc, and the radius and center of the arc are detected by the tool detection device. The detection results are entered into the controller, and the cutting tool is compensated for turning with the radius of the cutter arc. If the arc of the tool is not circular or the radius of the detection, error is related to the center, the shape error of the work piece will be caused. Blade ripple will affect the surface roughness of the work piece. When the center of the cutter is circular arc, the position of the axis of rotation of the main axis of the work piece should be the same as the height of the axis of the cutting center. In addition to the error of the machining shape.
During the operation of CNC machining equipment, cutting oil is often supplied to reduce the temperature of the cutting point and to remove chips. Most of the diamond turning is supplied by cutting oil with oil mist. Therefore, the nozzle angle and the flow and speed of oil and gas will affect the cooling and chip removal effect. The most common condition is that the chip is stacked on the diamond edge and is rubbed with the surface of the cutting material, which will have a great influence on the surface roughness of the work piece. In order to avoid producing chips or even scraps during the process of CNC machining, the chip collecting device can be applied. The principle of chip collecting device is to use high pressure air to blow into the chip collecting tube to produce vacuum. The use of a chip device will disturb the air near the cutting point, and at the same time the chip tube will vibrate because of the flow of the gas, and then cause the vibration of the machine and affect the surface roughness of the work piece. Therefore, in addition to the chip collecting effect, the influence of air disturbance and vibration should also be taken care of when using chip collector.
Key words:China CNC machined parts
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