Due to the modifications of the CNC Tat Transmission chain, in principle, as long as the speed can guarantee that the spindle is turned each week, the tool can move a length distance along the main axis management ( mainly of the Z axis) and should not be restricted. However, when a CNC tour treatment wire, the following aspects will be affected:
1) The distance value of thread (guidance) of the instructions for the thread treatment program is equivalent to the supply speed F represented by the power supply (mm / r).
2) At the beginning / end of its displacement, the tools will be subject to restrictions on the reduction in the lift / frequency of the driving system and the speed of calculation of interpolation of the CNC device. “Advanced” and “LAG” generated by the exercise cause the distance of the screw of certain snail teeth so as not to meet the requirements;
3) The turbine thread must be implemented via the synchronous execution function of the pin, that is to say that the driving thread requires the main axis impulse generator (encoder). When its pin speed is too high, the positioning impulse emitted by the coder (that is to say a reference pulse signal published by the spindle every week) can be “overnight” (especially When the quality of the coder is unstable) causes the wire of the work room to generate a random loop.
Therefore, when the car thread, determining the speed of the spindle must follow the following principles:
1) In the event of normal production and cutting efficiency, you must choose a lower spit;
2) When the import length Δ1 and the cut length Δ2 (as indicated in the figure) in the thread treatment segment (as indicated in the figure) are considered to be abundant, that is to say when the Fil supply distance exceeds the length of the wire on the speed of the pattern;
3) when the authorized working speed stipulated by the coder exceeds the maximum speed of the main axis specified in the tool-tool, you can choose as high as possible from the main axis speed;
4) In normal circumstances, the speed of the main axis (n snail) during the car thread must be determined according to the calculation specified in the instructions of the machine tool or the CNC system.
n snail ≤n authorization / l (r / min) Type n authorized – maximum working speed (r / min) authorized by encoder;
L-Distance (or guide, mm) of the part of the part.
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