cnc machining fabrication

CNC Machining Fabrication Part Accuracy

The requirement of machining accuracy is generally measured in “μ”. The editor accidentally heard a colleague sigh “in Japan, CNC can already achieve nano-scale machining”. Japan has deep attainments in precision machining. Today, I would like to give gold powders an overview of the ultra-precision machining technologies of neighboring countries.

What machine tool is used for F22 processing in the United States? ——SNK gantry pentahedron

SNK was founded in 1898. The main products include: FMS, FMC, gantry type machining center, gantry type boring and milling machine, and other machining centers, various automatic machines and various special machine tools. With 691 employees, it is a small and medium-sized enterprise.

SNK Osaka・Shitayama Factory

At present, it can manufacture the world’s largest processing equipment – a total length of 60 meters;

Processing equipment capable of handling the world’s largest working weight – 400 tons;

The accuracy of its machine tools with a size of tens of meters can reach the micron level.

SNK’s Gantry Pentahedron

The mother machine with the highest precision in the field of ultra-precision machining in the world

JTEKT owns JTEKT, KOYO, TOYODA and other brands. It is a company that provides technical support for “moving things” such as automobiles, Shinkansen, aircraft, and robots, and is closely related to daily life.

The AHN15-3D free-form surface diamond processing machine from Jtket, Japan, is mainly used for ultra-precision turning and grinding of various optical lenses and blue lens molds. The performance of this machine has reached 30nm part formation accuracy and 1nm grade ra surface roughness, which is only nearly higher than the three military artifacts (LODTM and DTM-3 of LLNL in the United States, OAGM2500 of CUPE in the United Kingdom) in terms of machining accuracy. 8 times.

Sodick, Japan: Wire-feeding EDM that breaks through nanoscale machining accuracy

CNC wire EDM processing includes fast wire processing and slow wire processing. With the continuous improvement of the manufacturing accuracy and surface quality requirements of precision, complex and long-life stamping dies, the fast wire processing technology can no longer meet the manufacturing requirements of precision molds. This situation has promoted the rapid development of slow wire processing technology. It has reached a very high level and is irreplaceable by other processing technologies.

Slow-moving wire processing machine tools are divided into four grades: top, high-end, mid-range and entry-level. Typical manufacturers of slow wire-feeding machine tools include Swiss GF Machining Solutions (formerly Agie Charmilles), Japan Makino, Japan Mitsubishi, Japan Sodick, Japan West, Japan Frank and so on.

Top-level slow-moving wire processing machine tools, which represent the current highest level, are mainly made by Switzerland and Japan. The machining accuracy of this type of machine tool can be guaranteed within ±0.002 mm, the maximum machining efficiency can reach 400-500 mm/min, and the surface roughness can reach Ra0.05 μm. The electrode wire of Φ0.02 mm is micro-finished. Most of the main machines have a thermal balance system, and some machine tools use oil for cutting. This type of machine tool has complete functions and a high degree of automation, and can directly complete the precision machining of molds. The life of the processed molds has reached the level of mechanical grinding.

Japan’s Sodick has produced the world’s first slow-moving wire EDM that breaks through the nanoscale machining accuracy. In addition, sodick also combined EDM and waterjet machining to successfully develop the world’s first hybrid wire-cut EDM.

Japan’s FANUC recently released a new ultra-precision nano-processing machine

This ultra-precision machining machine called FANUC ROBONANO α-NMiA uses FANUC’s latest CNC technology and Hilco’s system to challenge the processing limit. Processing machines are mainly used for the processing of complex shaped parts and high-precision components such as automobiles, watches, optoelectronic components, as well as in the biotechnology and pharmaceutical industries. The machine can also be used for milling and scoring workpieces up to A4 size.

In addition to the above companies, Japan has a lot to say in the field of finishing, such as:

Hitachi: One of the most important master machines in the optical field is a large diffraction grating scribing machine. Only 3-4 countries in the world can manufacture it. Hitachi has the highest scribing accuracy of 10,000g/mm, and is used by NASA in the United States for extreme ultraviolet spectroscopy.

Okamoto Machine Tool Works: The world’s largest gantry type surface grinder. This machine tool company UDG10035NC is equipped with a variable static pressure guide rail system, one of okamoto’s housekeeping skills. The main purpose of developing it is to strive for more accurate and efficient polishing. Large-size semiconductor components (liquid crystal panels, photomasks, photomasks, etc.).

Matsuura, Japan: The supercar brand Bugatti Veyron W16 and the Ferrari V8 engine use the MAM72-42V 5-axis automatic machining center of Japan’s Matsuura Machinery.


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