Constant temperature and humidity control, windowless factory

Our factory is next to Senboku New Town in the southern hills of Sakai-City, Osaka and surrounded by rich nature with 200,000 square meters of land, 500m of the distance from south to north and 300m of the distance from east to west.

The factory has no window and cuts off outside light. It is also the latest factory that keeps constant temperature and humidity through air conditioner control. Inside the land, there are five production buildings and one technical center and main building.

Constant temperature and humidity factory without window

Constant temperature and humidity factory Precise technology center

We have reviewed the shop environment as well as updating equipments of the shop. Machining accuracy of the machine is largely influenced by surroundings (especially temperature change) even more than the accuracy of the machine itself.

Particularly, as for the machining equipment for large machine, finishing has been done during the time which the accuracy is stable (i.e. temperature changes slightly) traditionally.

Since production efficiency is not good under such circumstances, we worked on for constant temperature factory. In 1982, actual constant temperature and humidity factory that is called as PC center (precise technology center) was built. Since then, other buildings were also changed and in 1997, all shops became to the constant temperature factory.

The first shop

The first shop

SNK prides this first shop (large shop), and in the shop, super large machining tools are assembled and large parts are machined by in-house bridged-type machining tools.
Assembly boards are set up in all floor of assembly place, and the shop keeps temperature at 23±3℃ and humidity at 50%

The second shop

The second shop

In the second shop (middle and small shop), machining tools and canning equipment are assembled, and spindle unit is assembled in clean room. In addition, middle and small parts are machined there.
As same as the assembly line at the first shop, assembly boards are set up in the second shop.

Precise technology center

Precise technology center

3-D coordinate measuring machine and molds for canning equipment are assembled, and highly-precise parts are machined in this precise technology center.Parts inspection that is a key of quality management is also done in the center.
This center was built in 1982 as the complete constant temperature and humidity factory. It was the earliest constant temperature and humidity factory in Japan, and represents SNK with the keyword of accuracy.

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