Spm is the abbreviation of strokes per minute, which means: strokes per minute, strokes per minute.

For example, the stroke of the cold punching machine is 40~80spm, which means that the maximum working frequency of the stroke is 40 ~ 80spm, which means that the maximum working frequency (punching times) of this punch is recommended to be 40 ~ 80 times per minute.

The design principle of punching machine is to convert circular motion into linear motion, and the flywheel is driven by the main motor, and the gear, crankshaft (or eccentric gear) and connecting rod are driven by the clutch to realize the linear motion of the slider. The motion from the main motor to the connecting rod is circular.

For circular motion and linear motion, there must be a connection point between the connecting rod and the slider. There are two kinds of mechanisms in its design, one is ball type, and the other is pin type (cylindrical type). Through these two mechanisms, the circular motion is transformed into the linear motion of the slider.

The punch presses the material to plastically deform it, thus obtaining the required shape and accuracy. Therefore, it is necessary to cooperate with a set of molds (divided into an upper mold and a lower mold) to put the material between them, and the machine exerts pressure to deform it. The reaction force caused by the force applied to the material during machining is absorbed by the main body of the punching machine.

Extended data:

Precautions before work:

1, check the lubrication condition of each part, and fully lubricate each lubrication point.

2. Check whether the mold installation is correct and reliable.

3. Check whether the compressed air pressure is within the specified range.

4. Check whether the switch button is sensitive and reliable, and make sure that the flywheel and clutch are disengaged before starting the motor.

5. Let the printing machine idle for several times, and check the working conditions of brakes, clutches and control components.

6. Check the main motor for abnormal fever, vibration and sound.

7. Add lithium ester oil to the slider with a manual oil pump.

8. Check and adjust the roller gap of the feeder to the process requirements.

9. Check and keep the oil quantity of the oil mist ejector in line with the specified requirements.

10, when the motor is started, check whether the rotating direction of the flywheel is consistent with the rotating sign.

Baidu encyclopedia -SPM