Our company started screw cutting processing, then we introduced cold forming technology in 1964. For this reason, we are well versed with both cutting and cold forming processing. Depending on the project, we can combine the advantages of each during processing, thus we can make optimal proposals according to the shape and quality desired.
It is our style to participate from the planning stage of customer project, and to do one-stop till mass production. In 2017, we opened a new development base in our Mito Factory to strengthen R & D activities to create "higher precision, faster, and at a lower cost".
Our strength is also a high-level quality control system that we have cultivated over the years in the critical safety parts field for automobiles, which requires high accuracy of 1/1000 millimeter units. Products to be sent out to the market are subjected to a 100% inspection with skilled inspectors with our in-house developed special inspection devise, aiming for "100% quality products".
We propose optimum processing method according to the shape, size and purpose of use.
It is a processing method in which coil wire material (iron, stainless steel, aluminum, copper, etc.) is compression molded in a room temperature range using a mold. One of its features is in high production efficiency, especially with high cost performance in mass production of small products. We can apply cold forming of a max. 7 stages with the parts formers. In addition, we can propose hybrid processing combined with brazing processing, etc. We will help you achieve high value production in cold forming processing.
Examples:
Brake hose end fittings, stud bolts, general products (including some cutting products), etc.
It is excellent in dimension and shape accuracy, and maintaining accuracy of 1 micron unit.
The fiber structure of the material is not cut and it becomes dense, which improves the strength of the material.
Reduce cutting loss. This increases production efficiency, which leads to cost reduction.
It is a processing method for forming a material into a desired dimensional shape by using a cutting tool. Because it does not require a mold, the merit of delivery time and cost saving in small volume processing can be expected. Our company specializes in precision cutting and possesses all kinds of multi-spindle automatic lathes. In addition to realizing high productivity, it is possible to meet the demands of cutting processes with a high degree of difficulty like complicated shapes, done by technicians who are well versed with the properties of the materials and the machine’s characteristics.
Examples:
Pin balls, pipe sheets, grease nipples, connectors, bearings, plugs, etc.
Various shapes can be processed with a high degree of accuracy.
Even with complicated shapes, the processing efficiency is relatively good and short delivery times can be achievable.
Since it does not require a mold, the initial cost is smaller. It is suitable for processing of small lots.
It is a processing method connecting two identical metals or dissimilar metals with another low melting point alloy (brazing filler) in a nonoxidation heating furnace applying the capillary phenomena. Also it is called brazing processing. The temperature inside the furnace is controlled and adjusted with high precision, our welding process enables efficient processing of very complicated shapes. It can melt and bond only the brazing material without melting the base material, so the finished surface has a high strength and is beautiful.
Examples:
Brake hose end fittings, vacuum connectors, power steering, etc.
It is excellent in bonding hard to weld materials, dissimilar materials, thinner structures or complex shapes.
There is very little heat influence or deformation to the base material, also the appearance shape of the joint is excellent.
Since the brazing material is poured into the gap between the base materials, a high air tightness and high strength can be achievable.
Our main products are critical safety parts for automobiles and motorcycles including brake hose end fittings. Since the defect of these products is directly linked to the life of the person, we are making every effort in our quality control system. Every day, we strive to develop inspectors and improve skills, and also focus on developing original automated inspection system utilizing image processing technology. We deliver reliable quality with highly accurate and efficient inspection system customized to each customer's product.
Examples:
Female metal fitting automated inspection machine, banjo metal fitting automated inspection machine, stud bolt image processing, etc.
An in-house developed device that can be programed for the optimum inspection condition according to product characteristics each time.
It can also detect fine scratches and dirt that cannot be checked visually.
Incorporate the necessary automatic inspection devices required for the production process to increase inspection efficiency.
Here is our exclusive technology "Integral molding of brake hose end fittings".
As a pioneer in cold forming, we have been involved in the manufacturing of critical safety parts for automobiles for many years, introducing parts formers sooner than anybody else in the country. In 1998, we created the exclusive technology "Integrated molding of brake hose end fittings" using our "7 step parts former", in order to meet the needs of customers and society, such as quality improvement, cost reduction, and resource saving.
This idea came from an inspiration of a veteran technician who was in charge of parts formers. When he worked on an ultra-fine pipe by cold forming, he thought "If applying this technology, the assembly of the nipples that are processed separately at this moment may also be possible to process with only one part". From that innovative idea, after 2 years, the integral molding technology of brake hose end fittings was put into practical use for the first time in Japan.
Traditionally, the manufacture of brake hose end fittings requires multiple steps from cold forming processing, cutting to brazing (welding) processing. However, by using our integrated molding technology of our 7 stage parts former, it is possible to drastically reduce man-hours. It also brings various benefits such as cost reduction and improvement of material yield, it has earned high praise from all fields involved.
Cold forming technology is a core development of Okawa Screw Manufacturing. It has made possible to realize mass production of high precision and high quality metal parts, which were considered to be impossible. However, there is no end to our manufacturing. Cold forming that no one has done before. We value inspiration and ideas, and Okawa Screw Manufacturing will continue to pursue innovation.
Sending metal processing technologies created by our hands through cold forming, cutting and brazing processing to many more customers.
Please feel free to contact us regarding any new development or mass production of metal parts.
