Perpetual motion machine

Perpetual motion machine
Perpetual motion machine remains a dream unattainable.


As a manufacturer, APPORO has quite an understanding of design of machine tools and the way they work. We figure how to optimize our CNC manufacturing procedures and to enhance the efficiency all the time, so as to reduce the manufacturing costs. Hence, when knowing there is so-called machine design which could conserve energy or enhance efficiency, APPORO surely looks into its operating principle in details and evaluates if it matches its advertised performance. Not surprisingly, the actual test result often falls short. Speaking of that, several well-known scams in history also adopted this kind of conceptual design, claiming to have created perpetual motion machine(*Ref) to defraud.


What is a Perpetual Motion Machine?

Perpetual motion machine refers to a machine that does motions constantly and works without energy input. There are two major categories in terms of perpetual motion machine. The first kind violates the first law of thermodynamics as it does work without energy sources. The first law of thermodynamics states conservation of energy, indicating the total energy stays constant in an isolated system, and that no extra energy emerges in that system. Any machine that claims to produce energy from nowhere falls into this category.

While the first kind of perpetual motion machine was proved to be impossible, discussions about the second kind of perpetual motion machine were put on table right away. Its design makes use of the energy outside of the isolated system such as heat and wind energy, striking the balance so that the system could operate perpetually. However, energy would eventually be exhausted from the working machines. The just balance could only be reached if there is energy input, so it still failed to forever motion without additional energy.


After Perpetual Motion Machine

The idea of perpetual motion machine has existed for centuries. Based on the scientific understanding nowadays, it remains a dream unattainable. However, there are still a lot of “scientists” engaged in the invention of perpetual motion machine, one after another. Basically these “scientists” are:

1.) Rookies: They barely know a thing about the concept of perpetual motion machine. They often mistake certain device for perpetual machine, which, in fact are device that absorb energy in the dark. For example, human body.

2.) Genuine scientists: They hold the firm belief that science has to be challenged all the time, thinking that thermodynamics could also be wrong or should be revised, as Newton’s law of motion was revised by theory of relativity quantum mechanics. It is never easy to overthrow a law, but their attitudes are admirable. These people are the most likely to invent perpetual motion machine.

3.) Fraud: Even in this era of information explosion, we can still see those who claim to have invented perpetual motion machine. They use sophisticated physics terms and fancy words to convince other to take their scientific results and defraud them of investment. But, until now, all perpetual motion machines are proved to be fraudulent.


Will The Dream Come True?

Perpetual motion machine has always been the dream in the field of science. Just like alchemy for development of chemicals, as many efforts are put into this probably impossible techniques, many relevant techniques are then created. As a pragmatic CNC manufacturer, although we might not believe the concept perpetual motion machine would be ever realized, we could not deny the fact that the progress of science and mechanic design derives from the constant efforts of researchers. Holding the same attitude, APPORO will non-stop updates and introduces new techniques and shares more case studies, hoping to have in depth academic exchange and to contribute to the manufacturing field.


*Ref: Learn more about Perpetual motion.

Fine Blanking Press Can Save 90% of Manufacturing Cost

How to reduce the cost of production?
Instead of using poor-quality materials, look for advanced production techniques!

Stamping is a manufacturing method which shapes sheet materials rapidly through procedures like shearing, blanking and bending. Stamping features the precise, mass, economic and effective production that it can produce fast and repetitively. We will talk about the difference between regular stamping die and fine blanking press later. Before, APPORO also shared a case study on progressive stamping die here:

The cut edge of a finished product of regular stamping die is usually rough and deformed with obvious cracks, and of parts with more thickness this condition becomes more apparent. This happens because when regular stamping dies function, they push the punches to bend and cut the materials, and then remove the finished cut part or waste materials from the sheet materials. If there is a need for precise assembly on the cut edge, a secondary processing work will then be inevitable to fix the cut edge. Otherwise, if there is no need for the precise assembly or cosmetic purpose on the cut edge, regular stamping dies will be an utility option for mass production.

The cut edge of a finished product of regular stamping die is usually rough and deformed with obvious cracks.

For example, the picture below is a counterweight part in a measuring device. As the counterweight part is not for cosmetic purpose and its cut edge is not for assembly, it is appropriate to use regular stamping dies to mass produce.

The counter weight part is made of SPHC materials with 10mm thickness. Manufactured with regular stamping dies, the cut edge of the part is rough with the bend and deformation.

Fine Blanking Press

Fine blanking press provides parts with smooth and vertical cut edge with precise dimension tolerance. Compared with regular stamping dies, the design of dies of fine blanking press has many differences. Take the blanking dies for fine blanking press as an example. There will be V-shaped convex rings designed around the upper stamping plate near the fringe of the cut edge. While blanking, the upper and lower plates will clamp the parts. After that, the blanking punches will fall to cut the sheet materials. Meanwhile, there will be ejectors same size of the blanking punches with counter-pressure below to withstand the sheet materials upward, ensuring that the cut edge of the sheet materials will not bend and deform after cut. Generally speaking, the width of the cracks between the blanking punches of fine blanking press and the upper/lower plates will roughly be 0.5% as much thickness of the sheet materials. That is almost 1/10 as much width of the cracks of traditional stamping dies, so as to prevent the cut edge from tearing.

The pole piece is made of SPHC materials with 6mm thickness. Manufactured with fine blanking press, the cut edge of the part are smooth and vertical, which is not second to the quality manufactured with milling or laser cutting.

With the numerous features above, fine blanking press dies are quite suitable for manufacturing 2-dimensional parts. Also, when it comes to mass production, fine blanking press has an advantage in its low cost compared to CNC milling and laser cutting. As what is stated above, if we use CNC milling for 2-dimensional parts with precise assembly and cosmetic purposes, the parts will have high precision but with high manufacturing cost and low efficiency. If we use laser cutting, although the manufacturing cost is low and the efficiency is high, the dimension precision is lower, only +/-0.2mm tolerances. Besides, it is easy to have burned marks, sharp edges, and burrs on the cut edge when we use laser cutting, so we will need secondary processing to reach enough precision and cosmetic requirements, and the manufacturing costs and procedures will then increase. If you plan to cut down the manufacturing cost, increase the manufacturing efficiency, and have the needs of precise assembly and cosmetic appearance, take fine blanking press into consideration for your projects.

Learn more about stamping: Progressive Stamping Mold: Spacing Limitation