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Because the workpiece moves along a loop of constant curvature, centrifugal force occurs when the drive wheel rotates at a constant angular velocity. From a qualitative point of view, this centrifugal force plays a positive role in separation. However, runner speed is important for high productivity.

In order to know the quantitative effect of the speed of the runner, the experiment will be studied at three speeds: 10, 30 and 60 rpm (revolutions per minute). However, from the data in Table 5, no significant difference in its independence was found. Considering that the actual speed of the current is about 15 to 30 rpm, it can be seen that the speed of the runner does not affect the separation.

As described in Equations 4 and 14, the coefficient of friction is directly related to the friction and heat generation of the contact surface. Since the direction of friction is the same as the tangential direction of the drive wheel surface, the increase in friction will inevitably reduce the strength of the surface separation.

Since the workpiece follows a constant curvature a circular path.

Moving, centrifugal force exists, even when.

The drive wheel rotates at a constant angular velocity. It is.

Apparently such strength as a positive factor for.

Separation from a qualitative point of view. However, wheel speed is an important factor for high production.

This workpiece is circumnavigated along a circular curved path, so gravity is present even when the driving wheel rotates with sustained angular velocity. Obviously, such gravity plays a positive role from a quality point of view. However, wheel speed is an important factor in high yields.

In order to test the quantitative contribution of wheel speed, three different speeds are 10, 30, and 60 rpmHowever, judging by the results of the numbers shown, there is no noticeable difference.

There are two types of demoulders: fixed or spring-controlled. In either case, its main function is to separate the workpiece from a sheared or non-sheared punch or die.

There is a separator that partially strips off the die and is also called a demolder, an internal demoulder, or a sheller. In addition to its main function, the demoulder can also compress, fix or position sheets, parts or workpieces.

The stripper is usually the same length and width as the slider, and in a simple die, the stripper may be bound to the same screws and dowels as the slider, and the screw head may also drill holes in the stripper. In more complex tooling or assembling die slides, the screws on the slides are often turned over to keep the stripper tightener separate.

The stripper must be thick enough to resist the force required to remove the material from the punch, plus the force of the material channel strip. With the exception of very heavy attacks or large blank spaces, the thickness of the drilled screw head is sufficient in the range of millimeters to 16 millimeters.

The height of the material channel strip should be at least a double of its thickness. If the material is to be raised to be fixed on the dowel pin, this height is to be increased and the different cutting widths require proper headroom.

The choice of how to use springs to demould the material depends on the required pressure, space constraints, the shape of the die, the nature of the work, and product requirements. Figure 9-12 lists a lot of these ways.