RU2016614C1 - Method and apparatus for forming a 3d body - Google Patents

Abstract

FIELD: consumer goods; cultural and general goods. SUBSTANCE: method for forming a 3D body consists in forming the 3D body of a parallelepiped which is beforehand separated into two parts: a cube and a cube half. The cube forms the core in the form of a cube having its apexes removed up to the middle of each edge. The cube half is separated into four little cubes. Each of little cubes is then separated into four triangular pyramids and a tetrahedron. The removed apexes and triangular pyramids are attached to the core faces having the form of reduced squares in sets of four. The apparatus for forming a 3D body has a core made in the form of a cube having its apexes removed up to the middle of each edge and twenty four triangular pyramids. EFFECT: increased efficiency of the process. 2 cl, 10 dwg

Description

 The invention relates to the production of cultural goods, in particular to objects obtained by folding and assembling blanks, to entertaining bodies, constructive sets, games, puzzles.

 A known method of forming a three-dimensional body, which consists in the fact that cylindrical washers or parallelepipeds are glued to each of its faces in the form of a cube [1].

 The disadvantage is the formation of a stepped face of the body with the invariable position of the parts.

 The famous game-pyramid in the form of a three-sided pyramid, assembled from an octahedron and four small pyramids with marking faces [2].

 The disadvantage is the invariability of the shape of the folding object.

 A known puzzle containing a frame with a cavity filled with a ball, volumetric elements mounted on the frame, forming a polyhedron with it in the assembled position [3].

 The disadvantage is the complexity of the device.

 A known method of assembling an educational toy from rod elements connected to each other with the formation of the core frame (body) in the shape of a polyhedron using hinged nodes and with the possibility of changing the shape of the core frame (body).

 The disadvantage is the formation of a trellised volumetric body of many small parts.

 Known ball containing the core in the form of a sphere with protrusions, the ends of which are made coinciding with the vertices of the cube.

 The disadvantages are the invariability of the form, the complexity of manufacturing.

 Of the closest technical solutions, there is known a device for forming a three-dimensional body, characterized in that it contains a set of polyhedrons made with the possibility of connection with each other [6].

 The aim of the invention is to improve manufacturability.

The goal is achieved in that the method of forming a three-dimensional body, which consists in assembling from elements interconnected to form a body in the shape of a polyhedron and with the possibility of changing the shape of the body, includes the fact that they form part of a parallelepiped in the form of a half cube and the core in the form cube whose vertices are removed to the middle of each edge and the vertex is attached to a nucleus, forming a composite cube, or rotated through 180 ^o and is connected to the core, placing them together four on opposite faces of the core in the form of reduced vadrata, divide a half-cube part into four small cubes, each of which in turn is divided into four triangular pyramids and a tetrahedron and mounted on triangular pyramids together four to the other opposite faces of the core in the form of a reduced square, forming a composite octahedron, while tetrahedra are connected in two, forming other additional composite volumetric bodies.

 The goal is also achieved by the fact that the volumetric body device contains a core made in the form of a cube with removed angles to the middle of each edge, and triangular pyramids made in the form of distant vertices of the cube to the middle of the cube edge with the possibility of forming a composite cube or composite octahedron.

 Such a method of formation and a device for forming a three-dimensional body make it possible to form three-dimensional bodies in the form of a cube with six faces and an octahedron with six vertices, mutually exclusive, from the same parts.

 In FIG. 1 shows a blank in the form of a parallelepiped; in FIG. 2 - the same side view; in FIG. 3 - a core in the form of a cube with removed corners to the middle of each edge of the cube; in FIG. 4 - a blank in the form of a half cube of four small cubes, divided into parts in the form of the corners of the cube and tetrahedrons; in FIG. 5 - a small cube; in FIG. 6 - part of the cube in the form of a remote angle; in FIG. 7 - tetrahedron obtained from a small cube; in FIG. 8 - composite cube; in FIG. 9 - composite octahedron; in FIG. 10 - composite volumetric bodies of two tetrahedra each.

The method of forming a three-dimensional body, which consists in assembling from polyhedral elements interconnected to form a body in the shape of a polyhedron and with the possibility of changing the shape of the body, involves the formation of parallelepiped 1 (with dimensions 1.5 V˙B˙V) of part 2 in the form of half cube and core 3 in the form of a cube, the vertices of which are removed to the middle of each edge of the cube, attach these vertices to the core 3, forming a composite cube 5, or rotate 180 ^° and connect to the core 3, placing them together four on opposite sides of the core in the form dim square 6, divide part 2 in the form of a half cube into four small cubes 7, each of which in turn is divided into four triangular pyramids 4 and tetrahedron 8 and these triangular pyramids 4 are placed together in four on the other opposite sides of the core in the form of a reduced square 6, forming a composite octahedron 9, while the tetrahedra 8 are connected in two, forming other additional composite volumetric bodies 10.

 The volumetric body device contains a core 3 made in the form of a cube with the vertices removed to the middle of each edge of the cube, and triangular pyramids 4 in the form of removed vertices of the cube to the middle of the cube edge in an amount of twenty-four with the possibility of forming a composite cube 5 or composite octahedron 9. Identical parts the composite cube and the composite octahedron can be made of various materials, for example, metal, plastic, glass, wood, polyurethane foam, rubber, etc., and are detachably connected, for example, using pins, an adhesive layer, etc., or one-piece, for example by welding, gluing, soldering, etc. Composite cube 5 and composite octahedron 9 can be made from the same parts simultaneously from two sets of parts, or alternately from the same set of parts with detachable connection. Parts of a volumetric body can be made from a single workpiece by cutting, pressing parts in molds, etc. depending on their material.

 A device for forming a volumetric body is used as follows.

 In the presence of a core 3 and triangular pyramids (pyramidal elements) 4 in the form of distant vertices of the cube to the middle of the cube edge, if necessary, form a composite cube 5, a composite octahedron 9, composite additional volumetric bodies 10 of two tetrahedrons 8, a composite small cube 7 of a tetrahedron 8 and peaks.

 Using the method of formation and the device for forming a three-dimensional body allows one to form volumetric bodies that are mutually exclusive from the same parts in the form of a composite cube and a composite octahedron.

Claims (2)

1. The method of forming a volumetric body, which consists in the fact that the volumetric body is formed by connecting polyhedrons, characterized in that, in order to improve manufacturability, the volumetric body is formed from a parallelepiped, which is first divided into a cube and half a cube, while the core is formed from a cube in the form of a cube, wherein the vertices previously removed to the middle of each edge of the cube, and then the top or is attached to the nucleus to its original location, forming a composite cube, or rotated through 180 ^o and is attached to the core by setting cos There are four, on opposite sides of the nucleus, in the shape of a reduced square, and half the cube is divided into four small cubes, each of which is first divided into four triangular pyramids and a tetrahedron, after which the triangular pyramids are joined together in four to the other opposite faces of the nucleus having the shape reduced square, forming a composite octahedron, and tetrahedrons are connected in two, forming additional composite volumetric bodies.  2. A device for forming a three-dimensional body, containing a set of polyhedrons made with the possibility of connection with each other, characterized in that, in order to improve manufacturability, the set consists of a core made in the form of a cube with vertices removed to the middle of each edge, and twenty-four triangular pyramids, the edges of each of which, equal in length to half the edges of the cube, are perpendicular to each other.

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