Special attention should be paid to the process of mechanical design

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In the process of mechanical design, special attention should be paid to the following points:

1. Kinematic calculation of the machine: according to the determined structural scheme, determine the parameters of the original moving parts (power, rated speed, conversion rate, etc.); Kinematic calculations are then performed to determine the motion parameters (rotational speed, linear velocity, acceleration, etc.) of each moving component.

2. Dynamic calculation of the machine: combined with the structure and motion parameters of each part (torque, pressure, heat, etc.), calculate the size and characteristics of the load and yield strength of each main part, and accurately check and calculate some important or complex shapes and forces.

3. Calculation of the working capacity of the

parts: the calculation criteria must be reasonably formulated with reference to the general failure of the parts and components, working characteristics, environmental conditions, etc., and generally have the criteria of strength, stiffness, vibration stability, and life. By calculation or analogy, it is possible to determine the basic dimensions of zeros, components, material strength, etc.

4. The design of the assembly sketch: the outline and size of all parts need to be structured on the sketch, and the structure and

size of each part and its matching tolerance and other factors need to be well coordinated, and the material, structure, and manufacturability of the designed parts should be comprehensively considered, so that all parts have the most reasonable design.

In order to meet the high requirements of mechanical product performance, it is also very important to choose the appropriate mechanical design software by using computer technology for aided design and system analysis in mechanical design. At present, the mainstream 3D design software in China mainly includes the following types:

SOLIDWORKS: Biased towards mechanical structure design, this software is easy to learn, the drawing efficiency is high, and the assembly design can directly refer to the existing parts to generate new parts. Regardless of whether the design is designed using a "top-down" or "bottom-up" approach to assembly design, SolidWorks will greatly improve the efficiency of the design with its easy-to-use operation.

Pro/Engineer: The design is built on the database of the unified base, and the information in the project comes from a single database, which has been recognized and promoted by the industry as a new standard in the field of mechanical CAD/CAE/CAM in the world today, and is one of the mainstream mechanical design software, especially in the field of domestic product design. Compared with Solidworks 3D software, this software is slightly more difficult, and has great advantages for some surface modeling and more complex structural processing.

UG (UnigraphicsNX): It is powerful, can easily realize the construction of various complex entities and shapes, and provides digital modeling and verification means and synchronous modeling for users' product design and processing processes, so it has become a mainstream application of 3D design in the mold industry.

CATIA: It has advanced hybrid modeling technology, whether it is solid modeling or surface modeling, users can easily and quickly modify the product repeatedly under the intelligent tree structure. CATIA's strength lies in its pleasing interface, ease of use and powerful features in specialized industries such as automotive, aerospace, and shipbuilding.

Mastercam: It combines 2D drawing, 3D solid modeling, surface design, voxel flattening, NC programming, toolpath simulation and photorealistic simulation. Powerful and stable modeling capabilities enable the design of complex curved and curved parts, while reliable toolpath verification simulates the entire process of part machining. Therefore, Mastercam's strength lies in CNC machining, which is easy to use, and the resulting NC program is simple and efficient.

With the increasing development of science and technology, the future of mechanical design will develop in the direction of intelligence, which needs to be comprehensively applied to the theories and ideas of multiple disciplines. Traditional mechanical design relies more on the knowledge, experience and skills of mechanical engineers, while in the era of intelligent big data, engineers can gradually use artificial intelligence, big data, cloud networking, additive manufacturing and other high-tech to speed up the speed of design and improve the quality of design, so as to better meet the needs of increasingly fierce market competition. In the future, there will be a variety of industries need professional, authoritative, standard design libraries, engineers will design requirements together with materials, manufacturing methods and cost constraints and other parameters input can quickly generate design solutions, through the continuous iterative learning of artificial intelligence systems, the production of design solutions will be more and more mature and advanced, and even some complex mechanism forms can not be done by traditional manufacturing methods, while the use of advanced additive technology 3D printing and other manufacturing methods can be easily realized.

Under the influence of various technological revolutions in the new era, mechanical design will become more intelligent and modular, mechanical products will be more lightweight and green, and the possibility of mobile office of mechanical design engineers will be greatly improved. In the future, after the engineer communicates with the customer's opinions and requirements at the customer's site, he can open the artificial intelligence mechanical design interface of the mobile phone on the spot, input the relevant technical parameters and requirements, and the artificial intelligence retrieves the expert database for deep learning exploration, so that he can quickly sketch a set of conceptual design plans and further communicate with the customer. With the blessing of artificial intelligence and big data, the cycle of mechanical design can be greatly reduced, so that products can quickly enter the market!

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