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.); Then do kinematic calculation to determine the motion parameters of each moving member (speed, linear speed, acceleration, etc.).

2. Dynamic calculation of the machine: combined with the structure and motion parameters (torque, pressure, heat, etc.) of each part, calculate the size and characteristics of the load and yield strength of each main part, and carry out accurate check calculation on some important or complex main parts with shape and force.

3. Calculation of working capacity of parts: The calculation criteria shall be reasonably drawn up with reference to the general failure conditions, working characteristics and environmental conditions of parts and components, and generally have criteria such as strength, stiffness, vibration stability and life. By calculation or analogy, you can determine the basic size of zero, components and material strength.

4. Design of assembly sketch: The sketch needs to carry out structural design on the shape and size of all parts, and needs to coordinate the structure and size of each part and its fitting tolerance and other factors, and comprehensively consider the material, structure and manufacturability of the designed parts, so that all parts have a more reasonable design.

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

Solidworks: In favor of mechanical structure design, this software is easy to learn, high efficiency drawing, assembly design can be directly referred to the existing parts to generate new parts. Regardless of the design with the "top-down" method or "bottom-up" method of assembly design, the SolidWorks will greatly improve the efficiency of the design with its easy-to-use operation.

Pro/Engineer: Design is based on a unified database at the grassroots level. All the information in the project comes from a single database. As a new standard in the field of mechanical CAD/CAE/CAM in the world today, it has been recognized and promoted by the industry. It is one of the mainstream mechanical design software, especially in the field of domestic product design. Compared with Solidworks three-dimensional software, this software is a little more difficult, and has great advantages for some surface modeling and more complex structure processing.

UG(UnigraphicsNX): It has powerful functions, 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 process, so it has become a mainstream application of 3D design in 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. The advantage of CATIA lies in its pleasing interface, easy-to-use and powerful functions, which has strong advantages in automotive, aerospace, shipbuilding and other special industries.

Mastercam: It sets two-dimensional drawing, three-dimensional solid modeling, surface design, voxel assembly, NC programming, tool path simulation and realistic simulation and other functions in one. Powerful and stable modeling function can design complex curves and curved surface parts, while reliable tool path verification function simulates the whole process of parts processing. So Mastercam strengths in CNC machining, easy to use, the 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 applied to the theories and ideas of multiple disciplines. Traditional mechanical design relies more on the knowledge, experience and skills of mechanical engineers. In the era of intelligent big data, engineers can gradually use high and new technologies such as artificial intelligence, big data, cloud networking, and additive manufacturing to speed up the speed and improve the quality of design to better meet the increasingly fierce market competition. In the future, professional, authoritative and standard design libraries required by various industries will appear. Engineers can quickly generate design solutions by inputting design requirements together with parameters such as materials, manufacturing methods and cost constraints. Through continuous iterative learning of artificial intelligence systems, the produced design solutions will become more and more mature and advanced, and even some complex institutional forms cannot be achieved by traditional manufacturing methods, however, manufacturing methods such as 3D printing using advanced additive technology can be easily implemented.

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 mechanical design engineers moving office will be greatly improved. In the future, after the engineer has completed the on-site communication and docking of the customer's opinions and requirements, he can open the artificial intelligence mechanical design interface of the mobile phone on the spot, input relevant technical parameters and requirements, and the artificial intelligence can retrieve the expert database and conduct in-depth learning and exploration, so that he can quickly outline a set of conceptual design schemes 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!