Talking about the design of mechanical products (2)
July 24 06:01:34, 2024
The right proportions and scales are the foundation and frame of a perfect shape. In general, the ratio can be varied and combined as long as it does not violate the product's function and material technical conditions, showing the quantitative relationship between the overall shape and local or local and local, such as the size of the length and thickness. Scale is relatively fixed, it refers specifically to the size of the shape and size of the human body or a certain degree of adaptation between the extent and scope. If the shape is only a good ratio without the correct fixed scale to the constraints, then the design will certainly fail. Therefore, the correct shape design order should first determine the scale, and then determine and adjust the proportion of modeling objects based on the scale. For example: bridge barricade, machine guards, car car, bike seat, fountain pen pen, are first to take into account the shape of the object that the size of the body to adapt to the length, width, height, diameter And so on, and then is the proportion of the shape and detail adjustments. The scale of modeling should be based on various factors that affect the combination of reasonable arrangements and coordination. These factors include the basic functions, material and technical conditions, aesthetic fashion and other three factors. The proportion of the coordinated shape of the object is not only beautiful, but the use of reasonable, give people a comfortable, intimate feeling. Mechanical product modeling commonly used in several proportion of relationship: (1) Golden Section Golden section since ancient times, has been recognized as the most beautiful scale, the composition of many beautiful nature, are reflected in the ratio of the golden section. Hua Luogeng, China mathematician to promote the preferred method, the preferred value is 0.618. The ratio of the golden section is based on the preferred number of 0.618 as the base ratio, so that the proportion of the two segments constituting the ratio is 0.618. This ratio has the human visual characteristics and internal scales. Its proportion of beautiful harmony, full of changes and have a certain regularity and stability. (2) If the short side is 1 in the rectangle with a square root ratio, and when these irrational series are applied to the long-side design, a very strict and natural and very regular repetition will be reflected in the geometry, that is, This is the root mean square ratio. This kind of proportional relationship has a harmonious and harmonious dynamic equilibrium aesthetics, so it is widely used. (3) Model Theory Model theory is a school of art in the perspective of modeling. They think the beauty of the shape from the whole to the local, from the part to the detail, are derived from one or several kinds of modulus, the size series containing a common scale factor, is an inherent law. It is from the absolute scale of the human body, the selected person's hand raised high, head high, high navel, down high for the four basic points (they are 2 260 mm, 1 830 mm, 1 130 mm, 860 mm) After the corresponding other values, two sets of Fibonacci numbers are formed as follows: (in mm) The first set is ... 1 830,1 130,700,430,270,170 ... The second set of red rulers As ... 2 260,1 400,860,530,330,200 ... called the blue ruler These values ​​not only contain the relationship between the median ratio constraints, and basically in line with various scales of human activity range, can Achieve a harmonious man-machine relationship as one. So modulus theory is a kind of practical value of the proportion of the body design patterns. 3 mechanical product modeling outlook and "parallel engineering" for a long period of time in the future, more simple, more concise, more clever, more rigorous structure, more sophisticated technology, the pursuit of rational beauty is the main symbol of mechanical product modeling. On-line type will be more use of straight lines or large curvature of the arc plus a small round corner modeling. In color will be light, bright and clever low-color cold, warm-based. A machine, the main color will be "two sets of color" or "three sets of color-based", a broken past dark or "kaleidoscope" -style color style. With the rapid development of science and technology and the continuous improvement of human culture, the life cycle of modern industrial products has become shorter and shorter. General machine tool product modeling life cycle of 5 years to 10 years, electronics and daily machinery products less than 2 years to 3 years, but also faster and faster innovation, especially home appliances, almost all internal movement are Without major changes, re-launched with a new style. In such a high-speed product replacement competition, as the main part of modern product design, the main part of design, structural design and mold design, according to the traditional work style, usually by the three professional and departmental designers Division of labor, work together to complete the task of industrial design. However, this design is too slow, very suited to the rapid development of today's new situation. Foreign countries are now pressing a new type of "concurrent engineering", the concept of a wide range of design and implementation of integrated model. "The concept of concurrent engineering suggests that the problems associated with the modeling, structure and die design of industrial products occur simultaneously, but not sequentially, and that they are complex, closely intertwined, and mutually constrained, creating a" parallel project. " Want to quickly and scientifically solve these problems, styling, structure and mold designers should learn, master and familiar with each other's work objectives, content, points, combined with their own work self-coordination, synthesis, in an attempt to reduce some of the design aspects and Impractical design mistakes, so as to improve the quality of our work and economic benefits.
High lumens solar street light with PIR /Remote /Time /Light sensor /
install by pole and wall mounted solar light street light is most popular item
Fast charging!Big Hight-efficiency Solar panelMonocrystalline Silicon Solar PanelsEfficiency up to 25%
Applicable for main application of LED street, main roads, secondary roads andbranches, factories, schools, gardens, city square, garden pathway lighti
ngs, etc.
solar street led light,solar light.street light ,all in one solar led street light