3results about How to "Dimensionally stable structure" patented technology

The invention discloses a film plate and an optimization method thereof and a film container, the film plate comprises a plate body, the plate body is provided with a first corrugated structure, a second corrugated structure and at least one intersecting curved surface, the first corrugated structure is arranged in a convex manner, the second corrugated structure is arranged in a concave manner, and the first corrugated structure and the second corrugated structure are arranged in an intersecting manner through the intersecting curved surface; wherein a design curved surface is defined, the design curved surface is of a curved surface structure formed in the mode that the first convex curve translates along the first concave curve and the vertex of the first convex curve slides on the first concave curve, the first corrugated structure and the second corrugated structure can penetrate through the design curved surface, and an intersecting curved surface is defined by intersecting lines. The corrugated structure and the intersecting curved surface are matched together to improve the displacement compensation capacity of the film plate, and the liquid tightness and the air tightness of the film container can be improved; the plate body is low in ductility, small in forming thinning amount and small in residual stress; the design and manufacturing cost and difficulty are reduced, and the forming precision is easy to control; and the performance optimization of the thin film plate can be realized.

This invention discloses a drilling device for processing and producing wrought iron railings, relating to the field of wrought iron railing processing technology. It includes a support leg, a drilling mechanism, and a fourth transmission rail. The drilling mechanism is located on the top of the support leg, and the fourth transmission rail is installed on the top of the support leg. The drilling mechanism includes multiple positioning frames that slide on the top of the fourth transmission rail. Each positioning frame has a railing placement groove on its top to ensure the holes are at the same horizontal position. After drilling, the railings are directly welded and fixed, ensuring that the holes of the connecting pieces align with the connecting posts during subsequent bolt connections. This improves installation quality and avoids enlarged holes and misalignment of the railings after installation. This process ensures that the holes of the connecting pieces and connecting posts correspond perfectly, improving hole accuracy. Direct welding after drilling reduces process steps, increases processing efficiency, and ensures overall structural dimensional stability.

This application belongs to the technical field of high-temperature resistant foam materials, and specifically relates to a high-temperature resistant polymethacrylamide (PMI) foam material, its preparation method, and its applications. Addressing the deficiency of existing PMI foam materials where mechanical properties rapidly degrade at high temperatures, this application introduces maleimide monomers into the PMI foam material to improve the rigidity of the molecular chain segments. Then, through a crosslinking reaction between carboxyl groups and polyisocyanates, a high-temperature resistant PMI foam material is obtained. The PMI foam material exhibits excellent mechanical strength and a low rate of mechanical property degradation at high temperatures, enabling it to withstand loads and maintain structural dimensional stability under high-temperature conditions, making it suitable for use as a structural core material in the aerospace field.