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Highfive Mechanical Design
Today, in our lives and work, all products include two aspects, one structure, and the other appearance, and the product structure can be said to indirectly determine the relationship between the appearance and internal functions of the product.
Regardless of whether the product structure design is in industrial design or other aspects, the value embodied is still relatively high. Large airplanes, trains, and small products we usually use require the participation of product structure design. So where is the value of product structure design reflected? What is its importance?
1. The Value of Mechanical Design
For the product itself, the product structure needs to go through a process before it is produced and manufactured. In this process, the structural designer needs to consider the function, appearance, and safety of the product as a whole, so as to design the structure and match various types. In order to realize the various functions of the product, and finally be able to manufacture, this is the value embodiment of the product structure design.
And this is the overall value. In terms of subdivision, the value of product structure design is mainly reflected in the following points
a. Product functionality
There is no doubt about this, the function of the product is the most important value of the product, and at the beginning of the design, it is necessary to consider whether the function of the product is stable and the performance is good. These are all factors that need to be considered at the beginning of the product structure design.
After understanding the product’s function, it is unnecessary to analyze its compact structure and beautiful appearance, which will help improve product stability. And it can also improve the attractiveness of the product, which is one of the value manifestations of the current product structure design.
b. Product reliability
The quality of the structural design directly affects the reliability of the product, especially after the designer designs the structure, if it does not match the accessories provided by the manufacturer or satisfies its production requirements, then the product structure design is difficult to achieve, It is also unreliable, and it cannot make the product operate stably.
Therefore, there are still many points that need to be considered in structural design. Reliability is particularly important in product structural design and is an important manifestation of its value.
c. Craftsmanship and aesthetics
The structure determines the stability of the product and naturally determines the design of the product’s appearance. It can be said that the product structure is a connecting axis between the function of the product and the appearance of the product, connecting its internal structure function and external appearance performance.
A good product structure design can make the product function safe and durable, good performance, beautiful product, and attract consumers to buy. This is also the value of the product structure design.
d. Reduce cost, easy to manufacture
Obviously, the structural design can drive the cost reduction, because if the structural design is not done well, the later maintenance may need to spend several times the price for maintenance.
This is something that manufacturers and merchants are unwilling to see. Therefore, in the product structure design, cost considerations are also necessary, reducing costs and bringing manufacturers more convenient manufacturing, which undoubtedly reflects value.
2. Importance of Mechanical Design
The above four points talk about the structural design value of the product, and we all know that the manifestation of value is the expression of its importance, and the level of value directly determines the degree of importance. The value of structural design here is the manifestation of its importance.
Therefore, the content mentioned above shows the importance of product structure design. This is the current editor’s understanding of the value and importance of product structure in industrial design.
3. Mechanical Design Wall Thickness
The size of the plastic material of the basic design code of wall thickness depends on the product to bear force, whether as other parts of the support, to undertake a number of columns, the number of protruding part as well as the selection of plastic materials and. In general, the wall thickness design of thermoplastics should be based on the project functions.
From an economic point of view, too thick products not only increase material costs, lengthen production cycles, but also increase production costs. From the point of view of product design, the excessive product increases the possibility of producing porosity and greatly weakens the rigidity and strength of products.
Mold temperature higher than the melting temperature of plastic material is low, when the plastic material into the mold from the mouth just pumping, due to lower temperature of the mold, the mold surface will form a layer of crystal layer, about 0.2MM, can cause the compound space is very small, need injection pressure is very large, it may cause to fill, there are some thin wall injection molding technology is designed.
The ideal wall thickness distribution is undoubtedly the uniform thickness of the section in any place, but in order to meet the functional requirements, the wall thickness change is always inevitable. In this case, the transition from a thick material to a thin one should be as smooth as possible. So suddenly the wall thickness transition will lead to unstable size and surface caused by different cooling rates and produce turbulence.
4. Mechanical Design Bar
The role of stiffeners is an integral part of the plastic component. Stiffening ribs increase the rigidity and strength of the product without substantially increasing the cross-sectional area of the product. This is especially true for plastic products which are often subjected to stress, torsion, and bending.
In addition, the stiffener acts as an internal runner and cavity filling and plays a major role in helping the plastic flow into the support section of the component. The design of reinforcement is generally placed on the non-contact surface of plastic products with the extension direction, should follow the product of maximum stress and maximum displacement direction of stiffeners position, also subject to some production considerations such as die cavity filling, shrink and release, etc.
5. Mechanical Design Column
The 1. pillar, which is used for assembling products, separating objects, and supporting other parts, is used for projecting the wall thickness of rubber. 2. hollow pillars can be used to insert parts, tighten screws, etc. Stop
A, stop, and reverse stop is closely related to the use of exergy. The action of the check is opposite to the check, and the check is to prevent the outward deformation of the B housing and prevent the A shell from shrinking inward.
B and reverse are made on the shell where the mother stops.
C, the design of the anti stop opening to the attention of the male buckle from unilateral 8.0MM exergy of at least 6.0MM, because to deformation.
6. Mechanical Design Buckle
Design of buckle is generally cannot do without the so-called method of the cantilever; cantilever is based on the characteristics of plastic deformation of the flexure itself, after the return of the original shape of elastic recovery.
The utility model has the advantages that the buckle position provides a product assembly method that is not only simple and fast but also has low cost and high reliability, and the buckle position is easy to assemble and disassemble so as to fully play the idea of assembly by the designer.
Because of a combination of partial buckle position at the same time the production of finished molding, the assembly does not need to cooperate with other parts such as screws, etc. the locked meson assembly process, buckle position is also very simple, generally only need an insert action, without rotation or assembly before the product positioning work, as long as the two sides need a combination of buttons a buckle can cooperate with each other.
Disadvantages: buckle device weakness is a combination of two parts of a buckle, hook-shaped flange part and protruding part after much-repeated use easy to deform because of fatigue effect, buckle bottom connection parts of products breaking, breaking after buckling is difficult to repair, this situation is more common in brittle the incorporation of fiber or plastic materials. Because the buckle and the product simultaneously molding, so buckle damage, that is, product damage.
The remedy is that the buckle device is designed as a plurality of buckles to be shared at the same time, so that the whole device can not operate because of the damage of the individual buckle, thereby increasing the service life of the device. Another weakness buckle device is fastened size tolerance requirements are very strict, inverted position too easy to form buckling damage, on the contrary, the inverted position is too difficult to control the assembly position, or the combination part appeared loose phenomenon.
7. Mechanical Design Stamping
Commonly used metal materials.
1. cold rolled steel plate, cold rolling is in the room temperature, the steel plate further rolling thin, as the target thickness of steel plate SPCD, calendering, forming quality, advertising box, learning shell, etc.
2. galvanized steel sheet is coated with zinc on the surface of the cold-rolled plate. Fingerprint resistant corrosion resistance, excellent processability, and maintain common grades of the cold-rolled plate, SECC SECD SECE advantages, from the perspective of cost, SGCC and SECC, will be sent to the factory processing parts electroplating, plating time and save transportation costs.
3. stainless steel, anti atmospheric, acid, alkali, salt, and other media corrosive effects of stainless steel, acid-resistant steel collectively. To achieve the corrosion effect of chromium (Cr) amount of not less than 13% in addition to exergy nickel (Ni) and molybdenum (Mo) to increase the effect. Because of the variety and content of the alloy, there are many kinds. Stainless steel features, good corrosion resistance, good brightness, high strength, certain flexibility. Common stainless SUS301 exergy spring steel, SUS302 SUS30
8. Mechanical Design Die-casting
Reinforcement of die casting, the design requirements of reinforced rib, rib role is to increase the strength and rigidity of die castings, reduce the casting shrinkage deformation, avoid the workpiece ejection from the mold deformation, as the melt filling auxiliary loop, melt flow path. We should pay attention to the following requirements: exergy
The stiffening ribs of the die castings shall be less than the thickness of the ribs
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