Some new features in the mold manufacturing process:

1. parallelism of production organization;

At present in the mold production organization, parallel engineering is widely used. Generally in the mold development process of technical preparation, production preparation, mold processing and commissioning of the process as much as possible between the parallel, that is, production preparation, processing technology and numerical control program design in parallel. Production plan must first arrange the drawing, forming mold, followed by the flanging integer mold, and then the trimming punching die, and finally blanking punching mold, the only way to do a balanced production, ahead of time Provide samples to the car factory.

2. Real CNC machining

At present, the mold manufacturers have been basically using the real-type production process. (Such as: processing surface paste processing margin, model hierarchical editing, etc.), and then through the NC programming, foam blank cutting, CNC machining, manual bonding and the production of digital processing, Dressing and other processes completed. Which will be real production staff from hand-made to a large number of NC programming up, the scene of a simple manual bonding and dressing work, by the temporary workers as. The NC production of the real type directly improves the precision of the casting, which brings great advantage to the fine processing of the sequence.

3. Machining in the rough finishing separately

The outstanding characteristics of the processing equipment of automobile mold enterprises are "more, big and fine". The so-called "more", because the car mold structure is complex, processing processes, the process requires a certain number of processing equipment. Large-scale key equipment mainly three-axis CNC milling machine, research and development presses, test presses, five-axis CNC laser cutting machine, coordinate measuring machine. The so-called "big", because now the level of automobile manufacturing is getting higher and higher, body welding process more and more simple, stamping parts block growing, making stamping die is also growing, more and more complex, so the development Mold a variety of processing equipment are large, the scope of work is generally more than 2000mm × 4000mm. The so-called "fine", mold processing equipment must have high precision, multi-functional features, such as five-axis CNC milling machine and high-speed precision CNC milling.

By adjusting the production organization and processing processes can ease the investment pressure and reduce the mold development costs. Using roughing and finishing separately to meet this requirement, rough processing in the mainland or Taiwan equipment, finishing in Europe and the United States equipment. Mainland or Taiwan's CNC milling machine is good rigidity, low price (for Europe and the United States equipment prices 1/5 to 1/3), ram size, spindle motor power, low speed, for roughing. Five-axis linkage high-speed milling machine is mainly imported from Europe and the United States, with large equipment input, high spindle speed, feed speed, high precision machining, to meet the fine processing requirements, only for finishing. Generally consists of four roughing equipment and a finishing equipment to form a processing unit, that is, a mold business to achieve a reasonable scale and a certain level, CNC milling machine should not be less than 5, according to the processing capacity of CNC milling machine to configure the staff and other devices.

4. Fine processing once in place

The purpose of fine processing is to greatly reduce the fitter training, a processing in place, reduce the repeated processing, the order to make up, artificial dressing and mold quality depends on the skills of fitter. Such as the upper and lower die edge gap directly processed in place, no fitter open gap; punching convex / die directly installed without debugging; drawing model surface of the high smooth without a knife trace, reduce the research; To the knife marks, not grinding grinding; concave fillet over the cutting process, do not clear roots and so on. Through the fine processing and the use of high standards of standard parts, and then make the parts of the processing benchmark and assembly benchmarks to achieve the fitter manufacturing only do not pretend to repair, the so-called "direct assembly method" is the modern mold production management direction.

To achieve the fine processing from the mold design, CNC programming and CNC machining start, such as the use of CAE technology for the fine design of the mold. Drawing a variety of different feeding capacity of the design of a variety of drawing tendons, with a different set of different parts of the drawing section of different drawing, anti-rebound over the drawing and the minimum pressure surface design, can greatly reduce the surface processing, Clamp repair and test work hours. Fine processing is mainly reflected in the improvement of mold surface machining accuracy and processing in place, need to have high stiffness, high precision, high speed high-speed precision CNC milling machine and high-speed cutting tools, but also attach importance to CNC programming technology. The processing method includes contour processing, the maximum length of the forward processing (horizontal step distance of 0.3mm), 30 ° tilt angle finishing (to avoid "zero cutting") to improve the surface accuracy of the mold, the use of concave fillet Do not clean the root and so on.

5. Surface treatment

At present, the surface treatment of the drawing surface requires a higher use of electroplating, other molds, flanging, trim edge inserts are basically flame quenching. Heavy thickness of the thick material of the edge of the material, but also the use of special steel for flame quenching. The first processing molding, after the whole method of quenching, due to the deformation caused by quenching can only rely on artificial dressing, has been basically not used.

6. First supply

To further shorten the mold development cycle, in the late mold development, the current mold factory in the drawing, forming, flanging integer mold after the completion of the use of five-axis CNC laser cutting machine to complete blanking, trimming, punching, etc. Process, first to provide stamping samples to the vehicle manufacturers, allowing them to assemble the screw body, test loader, reliability test, verify the design, the car product announcement, commissioning welding line, etc., until the small batch trial production, market Development. And then the car mold factory can then use this time to complete the trimming, punching, blanking mold development, and all the mold adjusted to the commercialization of the state.