This article describes a new breakthrough in the sheet metal processing technology - the use of CNC punching and compounding machine tools for punching. Through the analysis and comparison of processes using conventional CNC punching equipment, lists the advantages and disadvantages of different processes, and CNC punching The application prospects of the equipment in the processing technology are described.
1 Introduction
With the development of CNC stamping equipment, the sheet metal blanking and processing technology has been diversified. In this paper, through the study and analysis of the traditional processing technology and the characteristics of the "CNC punching and compounding machine tool" processing technology, it is proposed how to rationally use the equipment in the sheet metal blanking process, and the development of the CNC punching and cutting compound machine tool in the processing technology. prospect.
The CNC punching and laminating machine tool is a new breakthrough in the sheet metal processing technology. It has created a brand new field in sheet metal processing and is particularly suitable for small and medium batch production and flexible processing.
2 Analysis of processing technology
There are many processing methods for parts. Selecting a reasonable processing technology according to the existing equipment and processing ability is the first condition for completing the parts processing.
For example, the computer embroidery machine panel components shown in Figure 1: Dimensions L * W (410mm * 400mm) production and processing technology is the first cutting, and then placed on the CNC punching machine programming or CNC punching machine for the cut.
In the traditional process flow chart, there are two different production and processing technologies at the time of process preparation:
(1) First cutting and post processing
First, the plate is used to cut the plate according to the part's external dimensions, and then the NC program is edited. As shown in Fig. 2 , the cut-out plate is clamped and processed by the clamp of the CNC punching machine. When trimming, and to ensure that the four sides of the verticality, according to the ideal state in a 1250 * 2500 plate can process 18 410mm * 400mm rectangular sheet material, usually in accordance with the width of less than 5mm slats for the waste, The material utilization rate is less than 9%. The average time for each part is calculated according to 30 seconds. It takes 9 minutes and requires 1 man-hour: The plate after cutting will be processed on CNC punching machine, and 6 molds will be required for each workpiece. A total of 93 punches were used to complete the machining of this part. In addition to the process of setting up and removing the workpiece, each part took 1 minute to complete and required 1 person.
2.2 Processing technology based on CNC punching and compounding machine tools
In the use of CNC punching and compounding machine tool to process this part using the first punching after the cutting process, completely different from the CNC punching process, the entire plate in the processing process of programming once completed, eliminating the need for cutting process , Cut and trim to save material. As shown in Fig. 3, the 18 parts are closely arranged on the entire board, and the parts are sheared off from the entire board with right-angled shears.
(2) After a secondary positioning, transfer to the CNC right-angle shear working state, first trim the long side away from the clamp side, and cut the full-cut 3 knife to cut the width of 5mm and 2400mm in length. Trimming, cutting at right angles Cut 1 knife to cut 5mm wide and 1235mm long sheets; then cut all the parts away from the side of the caliper to the first row and the right side to the first piece, cut 18 dies in sequence and cut all parts. under. The material utilization rate is 99.4%, which takes 2 seconds.
(3) The trimmed scraps and parts are entered into different bins through the two sorting belts. The sorting process and the trimming process are processed in parallel. The trimming and side sorting are performed, and the right-angle trimming and cutting work is postponed for 5 seconds. The sorting work was also completed one after another. At this point, the waste material fell into the first channel box; the 18 pieces were processed and fell into the second channel box.
2.3 When processing 18 computerized embroidery machine panels. Comparison of CNC punch press and CNC punching and compounding machine usage
The advantages of CNC cutting and punching compound machine tool cutting technology: (1) High material utilization rate. (2) The process is simple and can be programmed once. (3) A CNC punching and cutting compound machine tool can complete the processing with high degree of integration, less transportation links, and low overall failure rate; (4) high workpiece accuracy and good section quality. (5) Low labor intensity; (6) Short processing cycle. The disadvantage is that CNC punching and CNC right angle shearing cannot work in parallel.
3 Conclusion
The use of CNC punching and laminating machine tools greatly simplifies the production process and increases production efficiency. Plate punching, forming and shearing processes are completed at one time, and the workpieces are directly generated from raw materials, which replaces traditional punching and separating processes, reduces processing time by more than 60%, saves materials by 6%-10%, and greatly improves materials. The utilization rate, processing efficiency and production cost are reduced. It is a new star in the sheet metal processing industry. Several interfaces are reserved for warehouses, automatic feeding robots, stackers, etc., which further expands the degree of automation and constitutes a numerical control system. Punching shear plate flexible processing production line. This will be the trend of the development of highly integrated devices in the future.
1 Introduction
With the development of CNC stamping equipment, the sheet metal blanking and processing technology has been diversified. In this paper, through the study and analysis of the traditional processing technology and the characteristics of the "CNC punching and compounding machine tool" processing technology, it is proposed how to rationally use the equipment in the sheet metal blanking process, and the development of the CNC punching and cutting compound machine tool in the processing technology. prospect.
The CNC punching and laminating machine tool is a new breakthrough in the sheet metal processing technology. It has created a brand new field in sheet metal processing and is particularly suitable for small and medium batch production and flexible processing.
2 Analysis of processing technology
There are many processing methods for parts. Selecting a reasonable processing technology according to the existing equipment and processing ability is the first condition for completing the parts processing.
For example, the computer embroidery machine panel components shown in Figure 1: Dimensions L * W (410mm * 400mm) production and processing technology is the first cutting, and then placed on the CNC punching machine programming or CNC punching machine for the cut.
In the traditional process flow chart, there are two different production and processing technologies at the time of process preparation:
(1) First cutting and post processing
First, the plate is used to cut the plate according to the part's external dimensions, and then the NC program is edited. As shown in Fig. 2 , the cut-out plate is clamped and processed by the clamp of the CNC punching machine. When trimming, and to ensure that the four sides of the verticality, according to the ideal state in a 1250 * 2500 plate can process 18 410mm * 400mm rectangular sheet material, usually in accordance with the width of less than 5mm slats for the waste, The material utilization rate is less than 9%. The average time for each part is calculated according to 30 seconds. It takes 9 minutes and requires 1 man-hour: The plate after cutting will be processed on CNC punching machine, and 6 molds will be required for each workpiece. A total of 93 punches were used to complete the machining of this part. In addition to the process of setting up and removing the workpiece, each part took 1 minute to complete and required 1 person.
2.2 Processing technology based on CNC punching and compounding machine tools
In the use of CNC punching and compounding machine tool to process this part using the first punching after the cutting process, completely different from the CNC punching process, the entire plate in the processing process of programming once completed, eliminating the need for cutting process , Cut and trim to save material. As shown in Fig. 3, the 18 parts are closely arranged on the entire board, and the parts are sheared off from the entire board with right-angled shears.
(2) After a secondary positioning, transfer to the CNC right-angle shear working state, first trim the long side away from the clamp side, and cut the full-cut 3 knife to cut the width of 5mm and 2400mm in length. Trimming, cutting at right angles Cut 1 knife to cut 5mm wide and 1235mm long sheets; then cut all the parts away from the side of the caliper to the first row and the right side to the first piece, cut 18 dies in sequence and cut all parts. under. The material utilization rate is 99.4%, which takes 2 seconds.
(3) The trimmed scraps and parts are entered into different bins through the two sorting belts. The sorting process and the trimming process are processed in parallel. The trimming and side sorting are performed, and the right-angle trimming and cutting work is postponed for 5 seconds. The sorting work was also completed one after another. At this point, the waste material fell into the first channel box; the 18 pieces were processed and fell into the second channel box.
2.3 When processing 18 computerized embroidery machine panels. Comparison of CNC punch press and CNC punching and compounding machine usage
The advantages of CNC cutting and punching compound machine tool cutting technology: (1) High material utilization rate. (2) The process is simple and can be programmed once. (3) A CNC punching and cutting compound machine tool can complete the processing with high degree of integration, less transportation links, and low overall failure rate; (4) high workpiece accuracy and good section quality. (5) Low labor intensity; (6) Short processing cycle. The disadvantage is that CNC punching and CNC right angle shearing cannot work in parallel.
3 Conclusion
The use of CNC punching and laminating machine tools greatly simplifies the production process and increases production efficiency. Plate punching, forming and shearing processes are completed at one time, and the workpieces are directly generated from raw materials, which replaces traditional punching and separating processes, reduces processing time by more than 60%, saves materials by 6%-10%, and greatly improves materials. The utilization rate, processing efficiency and production cost are reduced. It is a new star in the sheet metal processing industry. Several interfaces are reserved for warehouses, automatic feeding robots, stackers, etc., which further expands the degree of automation and constitutes a numerical control system. Punching shear plate flexible processing production line. This will be the trend of the development of highly integrated devices in the future.