Types of presses classified by structure



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Types of presses classified by structure

The press can be divided according to the frame structure:
- C-shaped frame or gap frame
- Compression frame or O-shaped frame
C-type stamping is commonly used for small-capacity presses. Advantages are compact, easy to move for quick installation. However, this advantage does not compensate for its disadvantage is the shape of the frame to force each time the force to deflect the structure. With today's new machines, many ligaments or reinforcement measures are used to ensure the rigidity and accuracy of the machine.
The two types may also be classified according to the one column, two column or support pillars (Figure 5-7).

Figure 5-5. Shaped section of the press eliminated the reduction (1) Frame (2) Control valve. (3) clutches and brakes / (4) flywheels. (5) Clutch and win. (6) Eccentric axis. (7) Adjust the stroke travel. (8) Slider adjustment. (9) Safe overload. (10) Slider. (11) Locking clamp.

Figure 5-6. Shaped section of die with dielectric: (1) Frame. (2) Control Valves. (3) Clutches and brakes. (4) flywheels. (5) Clutch and win. (6) Reducers. (7) Eccentric axis. (8) Slider adjustment (9) Slider adjustment. (10) Safe overload. (11) Slider. (12) Locking clamp

Figure 5-7. Types of press chassis: (a) C-shaped one column. (b) Two-C column. (c) Two-Column O (d) Column supports two columns
Also depending on the ratio of width and length, as well as the vertical distance, the press can be classified in vertical or horizontal type, tilt type or tilt type, and customized stand (Figure 5-8). . Figures 5-9 to 5-14 describe different types of presses. Fig. 5-15 shows different types of motors.
The "straight edge" press consists of a press die on which the mold is pressed, the top of the press, the two pillars and the hammer. Two pillars are connected to the base through the bolt or bracket. Straight-line presses are often more reliable than open-frame presses. Often they are not deviated from the corner, and if the force causes the machine to deviate vertically, it often also deviates symmetrically. For this reason, the straight-edge punching machine is least damaging to the straightness of the punch and mold.
On the other hand, the open frame press machine has a disadvantage caused by the nature of their open frame. These machines usually have to use a brace to fix the machine to avoid deviation from work, but often the braces too tight to the machine has been subjected to heavy load by the bar leading to the hammer and the mold is deviated. Damage to the machine. The transmission mechanism can also be used to classify presses. Fig. 5-17 describes a single-point drive system, where the connecting rod between the hammer and the drive shaft has only one, two-point system. The hammer is connected to the shaft via two points and the four-point system has four connecting points. Often, the drive system is located on the top of the machine, but there are some cases where the drive is located below the machine.

Figure 5-8. Horizontal presses: (a) Tilting type (b) tilting type. (c) vertical type. (d) Horizontal type.

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