Simple processing of large and complex molds (3)

8. High pressure coolant

High pressure coolant plays a very important role in large mold processing. For example, when drilling a slant hole with a 2+3 axis machining method, a coolant of 1000 psi (1 psi = 6890 Pa) is required to effectively remove chips and achieve higher precision cutting. If there is no such high-pressure coolant, it is necessary to add additional machine tools when machining the inclined holes, which requires secondary loading, which reduces the machining accuracy and increases the cycle cost.

According to the above analysis, it can be seen that the simple processing of large molds requires more and better functions of the machine tool. The new MCC2516VG3 shaft horizontal machining center developed by Makino has a spindle speed of 15000r/min and adopts the "shaft cooling" method and the "bearing internal pressure lubrication" function to ensure timely and effective cooling of the spindle and its associated bearings. . In addition, the main shaft can move not only in the X-axis in the lateral direction, the Y-axis in the vertical direction, and the Z-axis in the front-rear direction, but also in the A-axis and the C-axis. Thanks to the two indexing functions, it not only reduces the amount of adjustment work, but also cuts complex workpieces such as bumpers, instrument panels and car headlight lenses.

Car dashboard mold processing

Automotive dashboards are the most important component of automotive interiors. The shape of the dashboard and the surface quality of the product are critical to the performance, aesthetics and sales of the vehicle. Makino MCC2516VG machine tool is a horizontal machining center designed for the processing of large and complex mold 2+3 axes. The spindle angle can be changed according to the geometry of the workpiece. The machining precision reaches an ultra-high level, and the surface of the mold after machining is rough. Extremely high, no need for further grinding by the fitter. It can realize all the processing tasks by using the processing head tilting processing and the cutting edge processing under the premise of one machine tool and one loading.

In general, large mold products such as automobile dashboards should use a 3-axis machine tool for roughing, semi-finishing and finishing. Multi-axis machine tools are not suitable for roughing due to structural rigidity. Complete the entire machining process of large molds on multi-axis machine tools. But there are also special circumstances. There is a constant criterion in the machining process: where a smaller diameter geometry is used, a combination of a higher spindle speed and a shorter tool is required. For finishing small, difficult-to-machine parts on large molds, multi-axis machines should be used because they only account for 5% to 10% of the total machining time. However, if such parts are transferred from a 3-axis machine to a multi-axis machine, the machining time of the parts will increase significantly.

Conclusion

The development of the automotive industry has placed increasing demands on the mold industry. For the processing of large mold products, relying on existing technology is completely achievable. As long as we understand the key to mold processing and the design characteristics of the machine tool, we can completely and quickly process large and complex molds like small molds.

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Abrasion-resistant Mill Steel Balls

The electric pulverized coal steel balls produced by our company have the following characteristics:

1. High strength: After special heat treatment process, with high hardness and strength, can withstand greater impact and pressure.

2. Good wear resistance: The surface is specially treated and has good wear resistance, which can withstand the wear and abrasion in the pulverized coal grinding process.

3. Strong corrosion resistance: made of materials with good corrosion resistance, it can be used in a humid environment for a long time without rust or corrosion.

In short, the steel balls we produce have the characteristics of high strength, good wear resistance, strong corrosion resistance, good stability and long service life.

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