With the metal stamping parts die manufacturing skills gradually to scientific development, the original model and the use of graphics to create automotive panel mold, the traditional method is gradually by the CAD/CAM terminal from the digital description of the Automobile panel shape to the processing trajectory of the method to replace
Using the telephone line remote processing process will be the metal stamping parts manufacturing scientific level to a new height. Before the review, in the processing of steel molds with the outer parts of the punching car, a detailed blueprint must be drawn and a master model manufactured in accordance with the precise size of the punching piece. It can be said that the model is the design and manufacture of Hull mold. When making metal stamping die with casting method, it is necessary to arrange the sample of wood mould or auto parts first.
The model, which is made in a certain proportion, is called “the mould”, and is often used as a master in the profiling process or as an auxiliary model to show the machining trajectory of the milling machine. In the shape milling machine, by means of the mould contour, the milling cutter is milled according to the movement of the mould, which imitates the mould cavity. The current processing methods have changed radically. By the CAD data provided by the customer, the machining trajectory of the milling cutter is generated, and the stamping die of the automobile panel is automatically machined and the mould of the molded cavity of the plastic sheet is formed.
Although the new process can be used more accurately than the previous processing method to produce two of the mold of the surface, but for the pressure of the test mold, and the sample to be measured. The main cavity surface of the mould is machined correctly by CAD data, and then the prevention of wear pads and other parts are matched with the main cavities. The characteristics of the new technology of the die casting can be summarized as follows.
Second, test by three coordinate measuring machine The three-coordinate measuring machine used in conjunction with the CAD/CAM system is different from the movable three-coordinate measuring machine, which is suitable for the traditional machining mould. Now the three-coordinate measuring machine is equipped with automatic measuring system. The positioning accuracy of this three-coordinate measuring machine at any point in the 3250 X 1370 measure space is 0.015mm. The quality of the parts of the punching die or plastic mold can be measured at 40 tons. In order to keep the measuring machine at its highest measurement precision, it should be placed in a separate room isolated from the external environment, the room temperature should be maintained 20 Shan.
In order to prevent the vibration from adversely affecting the measurement, the measuring machine should be installed on a concrete base with a mass of 100 tons of air cushion support. In the processing of automatic lathe parts in Shenzhen, the three-coordinate measuring machine can not only be used as a tool to check the quality of the die, but also as a tool to detect the machining process. That is, in the process of processing the various processes after the Half-way inspection. For example, the main mold cavity surface of the spring factory is inspected after processing.
In particular, the machining surfaces should be thoroughly inspected before being thrown out to determine how to achieve more accurate geometrical shapes required for machining surfaces. In the inspection of the mold, you need to use a more dense streamline through parts everywhere. Each mold needs to be inspected two times. Once in stamping parts processing, another after stamping processing. By using the theoretical calculation thickness, the fitting condition of the upper and lower model cavity is measured to grasp the actual condition of the CAD design data precision.
Third, do not need the main model and modulo Although the main model and die are no longer used, the machining accuracy of automatic lathe is improved. For example, when the machining tolerances are very strict and the main cavity surface grinding requires manual polishing, the CAD data processing is better than the main model and the mould. The main difference is that the size control is fundamentally improved. The machining tolerances will change with the daily temperature when the mould of molded plastic parts is processed by traditional method.
For plastic sheet metal stamping molding of Dongguan hardware Although the processing precision is also very good, but the plastic sheet metal hot-pressing molding is not like the stamping sheet of the springback, so the precise control of the CAD data after processing, generally do not need to test mode. For this automatic lathe parts die as long as the regular customer verification can be, generally no longer need to submit the workpiece. This is mainly because the use of CAD data processing to test the results, the mold cavity surface can also be mathematical analysis, so as to ensure that the manufacturing process can be very strictly in accordance with the original design data implementation. It is because of the elimination of the mold manufacturing process of manual operation, improve the compression spring mold precision and processing cycle competitiveness.
The application of CAD data to die processing technology has been popularized in most metal stamping parts processing plants. Now, with the experience of many factories, the application of this technology, although the cam-generated tool trajectory time increased by 14%, but for the time spent in the light is reduced by 33%, the total processing time is shortened by 16.5%, the quality of the mold increased by 12%. Now, a variety of CAD/CAM software can help engineers to mold design and generate CNC milling cutter trajectory. The system can also display 3-D color models on the screen for design tooling and analysis. It can also be used to improve the casting quality of finite element analysis and Die thermal performance analysis. In fact, any customer’s database can be directly used for input, or entered after conversion.
IV. Characteristics of plastic sheet metal forming die Used for molding plastic sheet mold, and stamping parts of the mold metal plate, it has no material rebound problem. So the processing of this power pin sometimes does not need to adjust the mold to the condition, but the eye on the plastic parts to use the surface condition. The focus is on surface precision and shape accuracy.
V. Management of the process Networks that use these systems usually consist of small calculators and personal calculator terminals. An effective management system (Effectivens) software can track and manage the processing process. such as mastering the progress of processing, the status of parts flow, procurement of purchased parts, receiving status and processing quality. This management system also includes material inventory, planning and control, inventory management, standard castings, material vitae, total production schedules, and material planning, order and sales history, arrival quantity, operator’s resume, control status of workshop, planning time, quality evaluation, standard machining route, required production capacity plan, labor cost, outsourcing plan and arrival status, purchase requisition, purchased parts history and deliverable quantity, etc. The application of this kind of stretching spring software can choose the appropriate time for outsourcing goods and save labor.
Complete all processing status information into inventory management to produce a complete list of materials. And then according to the processing route for orderly processing. The system also provides daily data on the working hours of the operators and the running time of the machine tool, as well as the time of the shutdown. This can not only reduce the time of machine tool loss, but also calculate the actual production cost, so as to reduce the production cost.
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