This is an example of a frame (mass production type) assembled using angle-shaped steel materials manufactured by Mitsuya Co., Ltd., along with a top plate and surrounding cover.
This case involves a frame for industrial machinery and equipment. Initially, two units were to be produced, but later an additional 19 units were added. While this is not a particularly difficult type of product for Mitsuya Co., Ltd., producing 19 units in mass production is unusual. Due to the short production period, typically one or two units can be made by one or two people without much difficulty in maintaining quality, but with 19 units, about eight people were involved in the production, which made it a bit challenging to ensure consistent quality. However, since we had already produced the initial two units, we were able to establish processing points and quality standards, allowing us to somewhat unify the quality of the two units and the 19 additional units. Regarding shipping, we initially arranged for a 4-ton truck since the size of the 19 products could fit in one. However, when the transportation company came to inspect the products beforehand, they found that the weight of the 19 units exceeded 3,000 kg. Since a 4-ton truck can only carry a maximum load of 2,750 kg, we realized it would not work and quickly switched to a 10-ton truck to accommodate the shipment.
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basic information
The top board is made up of two 9t materials. The frame requires painting treatment, but due to compatibility with other products, Mitsuya Co., Ltd. does not perform painting treatment; however, the top board has undergone trivalent chromium plating (white) surface treatment. At the time of shipment, the top board is assembled with the frame and other covers, so we processed the top board first and requested the trivalent chromium plating (white) surface treatment. However, after the treatment, numerous scratches were discovered on the surface, so we sent photos to the customer to confirm the reason for the scratches and where they were located, asking them to indicate the visible areas when the equipment is assembled onto the frame. We then performed scratch removal treatment and re-applied the trivalent chromium plating (white), which made the delivery very tight and caused us to break into a cold sweat. As Mitsuya Co., Ltd., we investigated the cause of where the scratches occurred in the process and gained an opportunity to learn how to package such thick plates properly when shipping in the future.
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Applications/Examples of results
At Mitsuya Co., Ltd., we have various examples of frame structures produced from single items to mass production. For shipping, we use courier services for smaller items, and for slightly larger ones, we can arrange mixed transport. For larger quantities or depending on the loading weight, we can also arrange 4-ton or 10-ton trucks, or trailers. If you have any concerns regarding frame structures, please feel free to consult with Mitsuya Co., Ltd.
Company information
We were founded as a company that handles everything from design to installation of safety covers for dedicated work machines in-house. Currently, based on the technology and knowledge cultivated within this field, we provide a wide variety of sheet metal products, can manufacturing products, machined products, painting, and plating in total collaboration with partner companies, in addition to safety covers. Our in-house design utilizes 3D CAD, which has received positive feedback for being easy to understand when we ask customers to confirm specifications. We specialize in small-lot production of various types, and we strive for continuous technical improvement to respond to customer needs, including short delivery times, quality enhancement, and cost reduction through value analysis proposals.
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