1 NC machining method
Dongguan CNC processing factory for sheet metal processing, there are mainly the following processing methods:
(1) Single stamping, that is, single completion of the stamping process including arc distribution, grid hole, etc.
(2) Continuous blanking is divided into the same direction and multi direction. The continuous blanking in the same direction is mostly processed by overlapping the mold, which is particularly suitable for the processing of long-shaped holes. The continuous punching with multi directions is more suitable for small die for large hole processing.
(3) Sericulture processing, small circular mold, small step distance for arc continuous punching processing.
(4) Single or continuous forming process, single forming is a sheet metal processing which is shallow stretch once forming according to the nature of the die. However, if the forming is larger than the size of the mold, it is necessary to adopt the continuous forming processing method.
(5) Array forming, this kind of processing method is suitable for processing multiple workpieces on large plate, and the types of workpieces can be the same or different.
2. The technological characteristics of NC sheet metal processing
Dongguan CNC processing factory in sheet metal processing, showing unique advantages and characteristics, summed up mainly as follows:
(1) It is simple and convenient to use, and the cost of investment is low.
Dongguan CNC processing factory has its own unique advantages in the processing of various sheet metal parts, especially for the complex shape or sheet metal parts processing can automatically complete the processing of parts. According to the drawing requirements, the holes with different size and shape requirements can be processed automatically, or the larger holes and contour curves of various shapes can be produced and processed by small punch with small step step. The simple structure of the die for sheet metal parts with special processing technology, such as: shallow drawing, flanging hole, etc. can also be processed. Compared with traditional stamping, the die is simpler, the processing range is wide, and the processing ability is significantly improved. It is particularly suitable for mass production or product processing with various forms. This is very beneficial for processing enterprises to keep pace with the development of the market and meet the product demand. Moreover, the economic benefits of the enterprises are effectively improved because of the decrease of various costs.
(2) Stable product quality and high machining accuracy.
Dongguan CNC processing factory has good flatness and higher precision for sheet metal parts processing. Besides, burr brother, the forming quality is stable and the products have good consistency.
(3) Effectively improve production efficiency.
The automatic control system can realize the small batch processing of workpiece and the simultaneous processing of different parts, and the processing speed is fast. Because of the reduction of the processing and other links of the NC integrated processing of sheet metal parts, greatly improved the production, reduced the production cost investment.
3 NC stamping process
3.1 processing technology of cutting material first and then processing
When cutting materials in Dongguan CNC processing factory, the plate must be cut first. According to the requirements of the overall dimension of the parts, the plate cutting machine is used to cut the plate, and then the NC program is edited to enter the processing stage. For the processing of sheet metal parts, the clamp shall clamp the plate firmly and then process the parts. Pay attention to trimming the plate when cutting. The four sides shall have good verticality. If the plate to be processed is a rectangle with a length of 410mm and width of 400mm, 18 rectangular plates can be processed on a large plate with a length of 2500mm and a width of 1250mm, and the material utilization rate is below 9%. If the single blanking time of the part is 30 seconds, the total processing time is 9 minutes. In this process, a worker is required to place the cut and cut sheet on the punch for processing. The processing of a single workpiece requires 6 kinds of dies and 93 stamping times. In addition, the time consuming for loading and unloading the workpiece will take 1 minute to process the single workpiece.