Stamping production is mainly aimed at sheet metal. Through the die, blanking, punching, forming, stretching, trimming, fine punching, shaping, riveting and extruding parts can be made. , widely used in various fields. For example, we use switch sockets, cups, cabinets, plates, computer cases, and even missile planes ... there are many accessories that can be produced by punching machines through molds.

Second, the working principle of the punch

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.

Third, punch

Longmen high-speed punch

Four. Original drawing of electrical control principle of punching machine

Intuitively, the following circuit principles are not applicable to gantry high-speed punch.

Verb (abbreviation of verb) symbol description

The purpose of each control electrical component:

1.sb1-+0-self-locking grinding head button. When this button is pressed, all control circuits have no power supply.

2.SB2- main motor stop button,

3.SB3- Main motor start button, which can only be used for stamping after the main motor is started.

4.SA —— the choice of stamping or pressing with both hands of the foot switch.

5. Square foot switch, used when operated by one person.

6 6.SB4/SB5-Two-hand button, used when two people operate.

7. TV lighting transformer BZ-50VA

8.km —— Start contactor of main motor.

9.ka- intermediate relay connected to the stamping electromagnet.

10.CT electromagnet.

1 1.KH- main motor overload thermal relay.

Sixthly, the starting and stopping electrical control principle of F8 modified punch.

12. qf1-+0-main power switch and line short circuit protection

13.qf2-control circuit switch and line short circuit protection.

14.qf3-short circuit protection of lighting switch and line.