RU2781576C1 - Method for making a cubic lattice - Google Patents

Abstract

FIELD: metal processing.

SUBSTANCE: invention relates to the processing of metals by pressure and can be used in the manufacture of decorative cubic lattice. The method includes preparation for the deformation process, forming a part of the cell fragment by stamping, turning the workpiece 180° and forming the next part of the cell fragment, repeating the fragments the required number of times, assembling the product by rigid connection in rounded side elements. The dimensions and proportions of each element of the cell fragment containing decorative step transitions (DST) between the keeled and rounded side elements are preliminarily determined. A fully formed DST consists of an inclined step with rounded and keeled elements adjacent to it, and a partially formed DST consists of an inclined step with a temporary support section adjacent to it on one side and an adjacent rounded side element of a cell fragment on the other side. A temporary reference area for each DST is located on the axis of symmetry of the cell fragment.

EFFECT: it is possible to manufacture cubic lattices with DST in the form of inclined steps by stamping.

1 cl, 4 dwg

Description

The invention relates to the field of metal processing by deformation, namely, to a method for manufacturing a decorative hoofed lattice (CR), which is an old Russian product made of bars, the report (cell) of which is close to a vertical rhombus, but with rounded side corners and keeled points at the top and bottom

(https://temple_architecture.academic.ru/188/%D0%BA%D0%BE%D0%BF%D1%8B%D1%82%D1%87%D0%B0%D1%82%D0%B0% D1%8F_%D1%80%D0%B5%D1%88%D1%91%D1%82%D0%BA%D0%B0).

A known method of manufacturing CD (https://www.youtube.com/watch?v=9WpMMhnUJoY&app=desktop#menu, accessed 12/04/2021), consisting of cells with rounded side and keel-shaped elements at the top and bottom, including preparation for the deformation process , forming a part of the cell fragment by stamping, turning the blank by 180° and forming the next part of the cell fragment, repeating the fragments as many times as necessary, assembling the product by rigidly connecting the rounded side elements.

The disadvantage of the described method is the impossibility of manufacturing by stamping the CR with a decorative stepped transition (DSP) between the rounded side and keel-shaped elements at the top and bottom due to the mismatch between the axis of symmetry of the cell fragment and its supporting areas, which significantly increases the complexity of manufacturing the product with the manual method of manufacturing each element of the fragment cells.

The closest in technical essence to the claimed method is a method for manufacturing CR (RU 2720146, 07/05/2019), consisting of cells with rounded side and keel-shaped elements at the top and bottom and chipboard between them, including preparation for the deformation process, forming a part of the cell fragment by stamping, turning the workpiece by 180° and forming the next part of the cell fragment, repeating the fragments as many times as necessary, assembling the product by rigidly connecting the rounded side elements, while preparing for the deformation process is carried out by determining the dimensions and proportions of each element of the cell fragment, forming a completely single side chipboard rounded element and the supporting section of another chipboard, turning the workpiece by 180°, finally form the chipboard of the previous part of the cell fragment, the side rounded element and the supporting section of the next chipboard.

The disadvantage of the described method is the impossibility of manufacturing by stamping CR with chipboard in the form of inclined steps between the rounded side and keel-shaped elements at the top and bottom due to the lack of a support area located on the axis of symmetry of the cell fragment, which significantly increases the complexity of manufacturing the product with the manual method of bending each element of the fragment cells.

The technical result to which the invention is directed is to reduce the labor intensity of manufacturing the product due to the possibility of forming cell fragments of a more concise geometry by stamping, due to the presence of chipboard in the form of an inclined step located between the rounded side and keel-shaped elements of the cell fragment, with a preliminary determination of the dimensions and proportions of each cell fragment elements.

The technical result is achieved by the fact that a method for manufacturing a hoofed lattice, consisting of cells containing fragments in the form of rounded side and keel-shaped elements, and decorative stepped transitions between them, including preparation for the deformation process, forming cell fragments by stamping, repeating cell fragments the necessary number of times and assembly of the product by rigid connection of the rounded side elements with the formation of a hoofed lattice.

What is new in the invention is that the decorative stepped transition of the cell of the hoofed lattice is made in the form of an inclined step adjacent to the rounded side and keel-shaped elements, while the preparation for the deformation process is carried out by determining the dimensions and proportions of each element of the cell fragment, with the height A, mm, and width B, mm, cells are set from the condition:

A=WF, where

Ф - the value of the golden section,

side element rounding radius R, mm, is determined from the condition:

R=0.25A,

the width of the inclined step b, mm, is determined by the formula:

b=(0.5А-S):cosα, where

α - the angle of inclination of the diagonal to the height A of the cell, deg,

S is the length of the chord, mm, which is defined as the distance between the intersection points of the circle of radius R with the diagonals of the cell, while when forming the cell fragments, one decorative step transition is initially formed in the form of an inclined step, a rounded side element and partially another decorative step transition in the form inclined step with a temporary reference section adjacent to it, turn the workpiece over 180° and finally form a decorative stepped transition of the previous part of the cell fragment, a rounded side element, a temporary reference section and another decorative stepped transition, and a temporary reference section for each decorative stepped transition is placed on axis of symmetry of the cell fragment, and the middle of each inclined step is located at the intersection of the cell diagonals with the axis of symmetry of each cell fragment from the condition of the location of the inclined steps on the cell diagonals.

The present invention is illustrated by drawings, where:

in fig. 1 - cell KR with chipboard;

in fig. 2 - part of a fragment of a RC cell with chipboard (before flipping by 180°);

in fig. 3 - part of a fragment of a RC cell with an EAF (after a 180° flip);

in fig. 4 - external view of the RC with chipboard in assembled form, made according to the proposed method.

The device for manufacturing CR with chipboard includes a matrix (not shown) and a punch (not shown).

The method is carried out as follows.

Perform preparation for the deformation process.

Cell 1 (Fig. 1) is divided into symmetrical fragments 2 (Fig. 1).

The sizes and proportions of the elements of fragments 2 (Fig. 1) of cell 1 (Fig. 1) are determined. Each fragment 2 (Fig. 1) of cell 1 (Fig. 1) contains a fully formed chipboard in the form of inclined steps 3 (Fig. 1, 2, 3) between the keeled 4 (Fig. 1, 3) and the rounded side 5 (Fig. 1, 3) elements. In this case, the partially formed chipboard has an inclined step 3 (Fig. 2, 3), a temporary support section 6 (Fig. 2, 3) adjacent to it, set the height A (Fig. 1) and the width B (Fig. 1) of the cell 1 (Fig. 1) taking into account the ratio:

A=WF, where

A - height of cell 1 (Fig. 1), mm;

B - width of cell 1 (Fig. 1), mm;

Ф - the value of the golden section,

determine the radius of curvature of the side element by the formula:

R=0.25A, where

R is the radius (Fig. 1, 2, 3) of the rounding of the side element 5 (Fig. 1, 2, 3), mm;

A - cell height 1 (Fig. 1), mm,

the length of the chord S is determined from the construction (Fig. 1), mm is the distance between the intersection points of the circle of radius R (Fig. 1) with the diagonals of cell 1 (Fig. 1), inclined steps 3 (Fig. 1) are placed on the diagonals of cell 1 ( Fig. 1) and set the coordinates of the middle of each inclined step 3 (Fig. 1) at the intersection of the diagonals of cell 1 (Fig. 1) with the axis of symmetry of each fragment 2 (Fig. 1) of cell 1 (Fig. 1),

determine the width of the inclined step by the formula:

b=(0.5А-S):cosα, where

b - width of the inclined step 3 (Fig. 1, 2, 3), mm;

A - height of cell 1 (Fig. 1), mm;

S - chord (Fig. 1), mm;

α - the angle of inclination of the diagonal to the height A of cell 1 (Fig. 1), deg,

at the same time, when forming fragments 2 (Fig. 1), cells 1 (Fig. 1) initially form completely one decorative stepped transition in the form of an inclined step 3 (Fig. 2), a rounded side element 5 (Fig. 2) and partially another decorative stepped a transition in the form of an inclined step 3 (Fig. 2) with a temporary support section 6 adjoining it (Fig. 2) turn the workpiece 180° and finally form a decorative stepped transition of the previous part of fragment 2 (Fig. 1) of cell 1 (Fig. 1) ), a rounded side element 5 (Fig. 3), a temporary support section 6 (Fig. 3) and another decorative stepped transition, with a temporary support section 6 (Fig. 2, 3) for each decorative stepped transition located on the symmetry axis of the fragment 2 (Fig. 1) of cell 1 (Fig. 1), and the middle of each inclined step 3 (Fig. 1) is located at the intersection of the diagonals of cell 1 (Fig. 1) with the axis of symmetry of each fragment 2 (Fig. 1) of cell 1 (Fig. 1) from the condition of the location of the inclined steps 3 (Fig. 1) on the diagonals of cell 1 (Fig. 1).

Thus, the proposed manufacturing method provides a reduction in the complexity of manufacturing the resulting product (Fig. 4) due to the proportioning of each element of the fragment of the RC cell with chipboard and the transition from manual manufacturing to stamping.

Claims (9)

A method for manufacturing a hoofed lattice consisting of cells containing fragments in the form of rounded side and keel-shaped elements, and decorative stepped transitions between them, including preparation for the deformation process, forming cell fragments by stamping, repeating the cell fragments the necessary number of times and assembling the product by rigidly connecting the rounded side elements with the formation of a hoofed lattice, characterized in that the decorative step transition of the cell of the hoofed lattice is made in the form of an inclined step adjacent to the rounded side and keeled elements, while preparation for the deformation process is carried out by determining the dimensions and proportions of each element of the cell fragment, and the height A, mm, and width B, mm, cells are set from the condition A=WF, where Ф - the value of the golden section, side element rounding radius R, mm, is determined from the condition: R=0.25A, the width of the inclined step b, mm, is determined by the formula b=(0.5А-S):cosα, where α - the angle of inclination of the diagonal to the height A of the cell, deg, S is the length of the chord, mm, which is defined as the distance between the intersection points of the circle of radius R with the diagonals of the cell, while when forming the cell fragments, one decorative step transition is initially formed in the form of an inclined step, a rounded side element and partially another decorative step transition in the form inclined step with a temporary reference section adjacent to it, turn the workpiece over 180° and finally form a decorative stepped transition of the previous part of the cell fragment, a rounded side element, a temporary reference section and another decorative stepped transition, and a temporary reference section for each decorative stepped transition is placed on axis of symmetry of the cell fragment, and the middle of each inclined step is located at the intersection of the cell diagonals with the axis of symmetry of each cell fragment from the condition of the location of the inclined steps on the cell diagonals.

Images