Some customers mentioned: "In Zhongwang 3D, when the range of processing is too much, it is difficult to find when you want to use the range that was used before (you must find it one by one). Can you let it be used directly? The mouse selects the range (surface, wheel, etc.). This is convenient." The scope mentioned by the customer here is the processing feature we refer to. When programming with 3D CAD software, it is normal for the machining features to be reused. It is convenient to reuse the machining features, and it can also reflect the ability of a software to have efficient programming. Here I have to answer affirmatively: "Zhongwang 3D this 3D CAD software can do this, and it does a good job." When there are many features, we can define the name of the processing feature, which is convenient for us to use repeatedly. 1. Add new processing features. Left mouse click on the feature in the process. At this time, because it is adding a new feature, please click the middle mouse button. At this time, we will select according to the popup feature type corresponding to the process type, and then select new machining features as needed, as shown below. : The compression spring (compression spring) is a spiral spring which is subjected to pressure. It is usually made of a circular cross-section of material, and is also made of rectangular and multi-ply steel, the shape of compression spring is cylindrical, conic, convex and Concave, and a few non-circular. There is a certain gap between the circle and the circle of compression spring, when subjected to external load, the spring shrinks and deforms, storage of deformation energy. Compression spring introduction to compression spring introduction to compression spring characteristics of helical spring subjected to compressive pressure to external pressure provides resistance to external pressure application of household appliances to power equipment pressure spring compression spring parameter compression spring specification compression spring selection compression spring specification parameter compression spring design compression spring fixed mode compression spring calculation compression spring size specification table introduction compression spring (compression spring) is a helical spring subjected to compressive pressure, most of the materials used are circular in cross-section, and some are rolled in rectangular or multi-ply steel. The springs are generally of equal pitch. The shapes of compression springs are: cylindrical, conical, medium convex and medium concave, and a few non-circular, etc. , there is a certain gap between the circle and the circle of the compression spring. When the spring is subjected to external load, the spring shrinks and deforms, and the deformation energy is stored. Compression Springs provide resistance to external pressure. Compression Springs are generally metal wires with equal pitch winding and a fixed wire diameter. Compression Springs use multiple open coils to provide resistance against external forces, such as the weight of the wheel or the weight of the body on the mattress. That is, they push back against external pressure. Compression Springs are generally metal wires with equal pitch winding and a fixed wire diameter. In addition, there are conic compression springs, or conic and linear combination of springs. Compression Springs can be used to resist pressure and/or store energy, depending on the application area. Round wire is the most commonly used compression spring, but there are square, rectangular and special shapes of wire manufacturing compression spring. Wire Springs with compression springs are used for everything from home appliances to power equipment, motors, etc. because they are the desired type of spring. By the load acting on them or their ends being compressed, the compression spring is compressed by the design of the wire in an attempt to return the spring to its original shape so that the load is pushed back. Main application: medical respiratory equipment, medical mobile equipment, hand tools, home care equipment, shock absorption, engine valve spring. Production Design 1. Look at the actual product requirements to choose the spring material. 2. According to product requirements, determine the internal and external diameter of the spring, the number of effective turns, and the value range of wire diameter. 3. The relevant parameters are substituted into the design parameter formula. Associated Standard Gb/t [1] . 2-2009 technical requirements for cold rolled cylindrical helical springs, GB/T2089-94, etc. . Conical Spring,Small Compression Springs,Volute Spring,Helical Compression Spring Nantong Safe Yawl Import &Export Co.,Ltd , https://www.ntsyspring.com
In addition, there is an easier way to reuse the machining features, and it's quick and easy to improve your programming efficiency: 
2. Reuse existing processing features. Similarly, the left mouse click on the feature in the process, at this time, instead of pressing the middle mouse button, the machining feature is directly selected on the entity. If the machining feature has been used before, the "select feature" dialog box will pop up automatically, " All feature items related to this are listed under the Select Features dialog. It is very convenient to use in conjunction with the method we have previously named for processing features. As shown below: 
Did it feel convenient after the trial? There will be no more features, more processes, and it is difficult to distinguish and select processing features. Here you need to remind everyone to pay attention to the use of filters when selecting old features. 
Reuse of 3D machining features in the CAD speed-up tutorial