The brake of the CNC lathe is broken, is there a way to program it to stop a little faster

There are ways, but how effective it is depends on your machine. Stop the spindle early. When the last tool is finished, add M5 (stop spindle) before the last G00 retract command, or S0**Speed 0).

That is, stop the spindle before returning to the reference point. In this way, the spindle has stopped when the tool holder returns to the tool change position. I've tried it, and the actual running time of the spindle motor has been shortened by a few seconds, which has saved the boss a lot of electricity bills.

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When programming, the spindle decelerates first and then stops, such as when the tool is just withdrawn, it is lowered to S300 first, and then M5

When the parts are clamped, there are chatter marks in the workpiece, and the root cause is the change in the position of the tool tip relative to the workpiece. There are many reasons for these problems, but the most fundamental problem is that the relative stiffness of the tool is not enough, and the rigidity is insufficient.

Improvement method: improve the strength of the tool, divided into multiple processing (rough knife and fine knife, reduce the cutting force to reduce the vibration of the tool, cutting more smoothly, reduce the method of cutting force, generally reduce the amount of tool and feed rate, as well as the use of sharper tools, increase the rake angle of the tool.

The main reason why the quality of the hole is worse than that of the shaft is that the rigidity of the inner hole turning tool is worse than that of the external turning tool. There is also inconvenient chip removal and inconvenient cold cutting lubrication.

There are many ways to solve these problems, and there are many ways to think about them! I won't explain them all.

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See if the motor has a holding brake, generally the motor will produce a certain torque when it stops to prevent rotation. Generally, it is necessary to confirm the brake that comes with the motor, and generally the gravity shaft will have, which is generally power-off braking, and check whether there is a short circuit in the line. If there is no brake, confirm whether the motor has its own quasi-stop function, such as Siemens' CNC motor will have two kinds of enablement.

Control enable and pulse enable, two kinds of enable two parking modes, one is immediate braking, and the other is free parking. These are not the same as the system, and the situation is different.

There are also hydraulically assisted braking, like some domestic turning centers, in the milling to turn to turn to rely on this external braking, this matter can be from the PLC troubleshooting, to see what conditions have not arrived, resulting in tightening failure. There are many cases, such as solenoid directional valves.

Does not work, hydraulic cylinders.

Modify the parameters of the inverter If you used to rely on the brake pads on the motor to brake, check whether the brake relay is working normally, and check whether the brake pad working voltage is normal.

I checked the brake resistance and the brake resistance is good, but I still can't brake, what is the problem.