How to reduce the cost of CNC machined parts through structural design
CNC machining parts, that is, parts processed by CNC equipment, CNC machining, usually refers payment gateways for shopifyto the precision machining method digi...
CNC machining parts, that is, parts processed by CNC equipment, CNC machining, usually refers payment gateways for shopifyto the precision machining method digitally controlled by a computer, has now become a common processing method.
CNC processing equipment, called CNC machine tools, also called CNC system machine tools, in different development areas are also some companies called different, such as the Yangtze River Delta region around people usually called processing technology center, the Pearl River Delta around is usually called computer gongs.
Typical CNC machine tools.
CNC lathe-lathe works by rotating the material in the lathe chuck. The tool is then moved along 2 axes into the workpiece to cut the cylindrical part.
CNC Milling Machines - CNC milling machines are typically used to make flat parts, but more complex machines with greater freedom can create complex shapes; the material remains stationary and the spindle rotates with cnc milling prototypethe tool, which moves or rotates along three axes (about 4 or 5) to cut into the material; in some cases, the spindle is stationary and the material enters.
CNC Drilling Machines - These machines are similar to CNC milling machines, but they are specifically designed to cut along only one axis, i.e. the drill bit only moves down into the material along the Z-axis, never cutting along the X- and Y-axes.
CNC Grinders - These state of the art machines move the grinding wheel into the material to produce an economical high quality surface finish. They are studied with the aim of removing hardened as well as small amounts of construction material from the metal; therefore, they are used as finishing technology operations.
CNC machining is widely used in a variety of industries for its high precision. However, CNC machining services can also be a bit expensive when compared to other manufacturing methods such as injection molding, die casting, stamping, etc. The main factors affecting the cost of CNC machining are.
Equipment costs include initial purchase costs, operating costs, maintenance costs, etc. There may also be some other costs, such as tooling costs, CNC system use costs, etc. These costs affect the antminer s17 pluscost of each processing, so the higher the cost of buying, operating and maintaining a machine, the higher the cost of using it to make parts.
Milling machines are typically more expensive than lathes because they have more complex moving parts; are more difficult to set up, operate, and maintain; and can perform more complex processing. So, if not necessary, parts are designed to accommodate the lathe's machining structure.
Figure: Parts suitable for lathe machining and the main features of the social structure
Milling machines are of different types and have different degrees of complexity and capability. The more axes a milling machine has, the more expensive it is. Most modern CNC machines have three or five axes. While 5-axis machines can create very complex geometries more accurately and faster (so they require less machining time), they are typically more expensive than 3-axis machines.
2. Design Costs
Design cost is the cost of preparing for the actual machining, mainly including CAD (structural, engineering drawing design), CAE (optimization analysis), cam (manufacturing programming) process cost. The cost of computer-aided design (cad) and computer-aided design (cae) is not necessarily allocated to the cost of each part. It depends on the way A and B work together. Also, the design cost is fixed. When the number of computer-aided design and cad is larger, the design cost allocated to each part is lower.
The material cost involved in manufacturing the part is one of the most important components of the part cost. Material cost consists of raw material cost, material consumption and material processing time.
Raw materials for cost: the market economic price of raw materials varies from enterprise to enterprise, while the price through different countries market development region is also different, in choosing a raw material for parts parts, should be based on the use and function of the parts can choose their own suitable materials, rather than we choose excessively beyond the performance aspects of the requirements of expensive materials, such as the same stainless steel, 316 stainless steel prices than 304 Stainless steel products are much more expensive.
Material quantity: In the design of the structure of the parts and manufacturing process, the number of materials should be as low as possible, if necessary, two relatively simple parts can be assembled into a complex part by way of disassembly and subsequent assembly (requiring more material use and processing time).
Material processing time: The cost of a part is directly proportional to the processing time. Material processing time is related to the machinability of the material. Materials with low machinability take more time to machine and consume more resources such as cutting fluid, power and cutting tools. (For example, softer materials like aluminum are easier to cut, which means shorter machining times, while harder materials like stainless steel require more expensive tools and are more prone to damage and wear, making parts more expensive to machine.)
4, production volume
As the number of parts increases, the unit cost of a group of identical parts decreases significantly. This proportional cost reduction is primarily due to the elimination of duplicate design costs as well as machine setup and commissioning. the CAD design, CAM preparation and machine setup are all done at once and are used for all parts to be manufactured. (That is, design costs and machine setup costs are all included in one part. If 1000 parts are produced, the design cost and machine setup cost will be shared equally among those 1000 parts.)
CNC machining parts before processing, the need for clear tolerance requirements, surface roughness requirements, more stringent tolerance requirements will lead to companies more difficult to process, and increase the scrap rate, which will also lead to higher costs for students; higher surface roughness requirements we may affect lead to CNC milling machine processing technology can not really do, it is necessary to study the use of grinding machines or even no other teaching methods, increasing the process of Natural resources to increase the cost of the company.
After CNC machining is complete, post-treatment such as heat treatment and surface treatment may be required to improve the function, performance and aesthetics of the part. All of these post-treatment requirements add to the cost of the part to some degree.
For surface treatments, another serious cost driver is the application of different surface treatment requirements to different areas of the part. For example, partial plating, partial anodizing, two-color sample oxidation, oxidation in one area, and plating in another area. Therefore, in order to reduce costs, consistency in surface treatment requirements should be maintained throughout the part as much as possible if not necessary.
The more complex the part structure, the higher the manufacturing cost. Highly complex parts may require more advanced machinery, they also require more machining time, multiple disassembly and equipment setup, more resources and closer inspection. All of this affects the cost of the part.
In CNC machining, certain important part features and designs will inevitably add to the cost of the business.