阅读说明：本技术 一种螺旋曲面结构、保险杠、机床立柱及净化器 (Spiral curved surface structure, bumper, lathe stand and clarifier ) 是由 李峰勋 王建新 于 2019-11-05 设计创作，主要内容包括：本发明涉及一种螺旋曲面结构,包括至少两个曲面单体,相邻两个所述曲面单体对称设置,曲面单体包括第一曲面、第二曲面及圆筒形曲面,圆筒形曲面螺旋上升或螺旋下降,所述第一曲面与圆筒形曲面的下断面连接,圆筒形曲面的上断面与所述第二曲面连接；制造成本低,吸能率高；还涉及一种上述螺旋曲面结构的制造方法,包括：步骤1、将圆柱放置在平面板材的一端,圆柱的轴线与平面板材的长度方向的夹角为θ,且圆柱的竖向中心平面经过平面板材的首端下部顶角；将板材沿圆柱螺旋向上弯折360°,得到一个曲面单体；步骤2、将圆柱抽出逆时针转动180°-2θ后,使板材沿圆柱螺旋向上弯折360°；步骤3、重复步骤1和步骤2；制造成本较低。(The invention relates to a spiral curved surface structure, which comprises at least two curved surface single bodies, wherein every two adjacent curved surface single bodies are symmetrically arranged, each curved surface single body comprises a first curved surface, a second curved surface and a cylindrical curved surface, the cylindrical curved surface spirally rises or spirally falls, the first curved surface is connected with the lower section of the cylindrical curved surface, and the upper section of the cylindrical curved surface is connected with the second curved surface; the manufacturing cost is low, and the energy absorption rate is high; also relates to a manufacturing method of the spiral curved surface structure, which comprises the following steps: step 1, placing a cylinder at one end of a planar plate, wherein the included angle between the axis of the cylinder and the length direction of the planar plate is theta, and the vertical central plane of the cylinder passes through the lower vertex angle of the head end of the planar plate; bending the plate upwards by 360 degrees along the cylindrical spiral to obtain a curved surface monomer; step 2, drawing out the cylinder, rotating the cylinder counterclockwise by 180 degrees to 2 degrees, and bending the plate upwards by 360 degrees along the cylinder spiral; step 3, repeating the step 1 and the step 2; the manufacturing cost is low.)

1. A spiral curved surface structure is characterized by comprising at least two curved surface single bodies, wherein two adjacent curved surface single bodies are symmetrically arranged, each curved surface single body comprises a first curved surface, a second curved surface and a cylindrical curved surface connected with the first curved surface and the second curved surface, the cylindrical curved surface spirally rises or spirally falls, the first curved surface is connected with the lower section of the cylindrical curved surface, and the upper section of the cylindrical curved surface is connected with the second curved surface; and two adjacent curved surface single bodies are connected through respective second curved surfaces.

2. The toroidal curved surface structure of claim 1, wherein said cylindrical curved surface is formed by spirally rising or spirally falling a flat plate material.

3. The toroidal curved surface structure of claim 2, wherein said cylindrical curved surface has a slope of between 0.5 and 2 when spirally rising.

4. The toroidal curved structure of claim 2, wherein said first curved surface and said second curved surface are both triangular structures.

5. The helical curved structure of claim 2, wherein the included angle between the axes of the cylindrical curved surfaces of the two curved individual bodies is between 60 ° and 150 °.

6. The toroidal curved structure of claim 5, wherein the axes of the cylindrical curved surfaces of said two curved single bodies form an included angle of 90 °.

7. A method for manufacturing a helical curved surface structure is characterized by comprising the following steps:

step 1, a cylinder is placed at one end of a planar plate, the planar plate is of a rectangular structure, an included angle between the axis of the cylinder and the length direction of the planar plate is theta, the theta is an acute angle, and the vertical central plane of the cylinder passes through the lower vertex angle of the head end of the planar plate; bending the plate upwards by 360 degrees along the cylindrical spiral to obtain a curved surface single body;

step 2, after the cylinder is drawn out, the cylinder is rotated by 180 degrees to 2 degrees in an anticlockwise direction by taking the intersection point of the vertical central plane of the cylinder and the upper edge of the plane plate as the center of a circle; bending the plate upwards by 360 degrees along the cylindrical spiral to obtain another curved surface monomer; forming two symmetrically arranged curved surface single bodies;

and 3, if a longer spiral curved surface structure is needed, repeating the step 1 and the step 2 until the planar plate is completely curled into the spiral curved surface structure containing a plurality of curved surface monomers.

8. The method of manufacturing a helical curved surface structure according to claim 7, wherein θ is between 15 ° and 60 °.

9. The method of manufacturing a helical curved surface structure according to claim 7, wherein θ is 45 °.

Technical Field

The invention relates to a curved surface structure, in particular to a spiral curved surface structure, a bumper, a machine tool upright post and a purifier.

Background

The energy-absorbing filling material is mainly divided into a metal foam structure, a dot matrix sandwich structure and a prism sandwich structure according to the shape of a light structure. Metal foams are classified into open-cell type and closed-cell type according to the closed state of the pores, but their use is limited to the aviation industry and sound insulation materials due to the low mechanical strength of the metal foam structure. The lattice sandwich structure has higher mechanical strength and mainly comprises structures such as pyramids, octets, Kagome and the like. The lattice sandwich structure is a single cell structure formed by connecting nodes and rod pieces of the nodes, and the single cell structure is arranged according to a certain rule to form a space lattice structure. Although the lattice sandwich structure has higher mechanical strength, the manufacturing method is complex and the manufacturing cost is high. The honeycomb structure is taken as a typical prismatic sandwich structure, has higher specific strength and is widely applied to the field of aerospace, but the internal space utilization rate is limited by the closed internal structure of the prismatic structure, and the honeycomb structure has the defects of lower heat efficiency and the like. Lightweight structures, as fillers for structures, not only require a certain mechanical strength, but also the energy-absorbing properties of the structure are of similar importance. As a novel bionic light structure, the double-sine curved surface structure is a front turtle of mantis shrimps as a prototype. Although the mechanical strength of the structure is not as good as that of a triangular prism sandwich structure and a single sine structure, the energy absorption rate of the structure is far higher than that of other two structures. However, the structure has a complex shape, and actual manufacturing has certain difficulty.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the spiral curved surface structure which has certain mechanical strength and can ensure the energy absorption rate.

The technical scheme for solving the technical problems is as follows: a spiral curved surface structure comprises at least two curved surface single bodies, wherein every two adjacent curved surface single bodies are symmetrically arranged, each curved surface single body comprises a first curved surface, a second curved surface and a cylindrical curved surface connected with the first curved surface and the second curved surface, the cylindrical curved surface spirally rises or spirally falls, the first curved surface is connected with the lower section of the cylindrical curved surface, and the upper section of the cylindrical curved surface is connected with the second curved surface; and two adjacent curved surface single bodies are connected through respective second curved surfaces. And two adjacent curved surface monomers are symmetrically arranged about the connecting surface of the curved surface monomers, and the connecting surface is the connecting surface of two second curved surfaces.

Further, the spiral curved surface structure is integrally formed.

Further, the cylindrical curved surface is formed by spirally rising or spirally falling a planar plate.

Further, the slope of the cylindrical curved surface when spirally rising is between 0.5 and 2.

Further, the first curved surface is of a triangular structure.

Further, the second curved surface is of a triangular structure.

Further, the included angle between the axes of the cylindrical curved surfaces of the two curved surface single bodies is 60-150 degrees.

Furthermore, the axes of the cylindrical curved surfaces of the two curved surface monomers form an included angle of 90 degrees.

The spiral curved surface structure has the beneficial effects that: the three-dimensional spiral curved surface structure can be manufactured at low cost, and the aim of lightening the structure can be fulfilled

The invention also relates to a manufacturing method of the spiral curved surface structure, which comprises the following steps:

step 1, a cylinder is placed at one end of a planar plate, the planar plate is of a rectangular structure, an included angle between the axis of the cylinder and the length direction of the planar plate is theta, the theta is an acute angle, and the vertical central plane of the cylinder passes through the lower vertex angle of the head end of the planar plate; bending the plate upwards by 360 degrees along the cylindrical spiral to obtain a curved surface single body;

step 2, after the cylinder is drawn out, the cylinder is rotated by 180 degrees to 2 degrees in an anticlockwise direction by taking the intersection point of the vertical central plane of the cylinder and the upper edge of the plane plate as the center of a circle; bending the plate upwards by 360 degrees along the cylindrical spiral to obtain another curved surface monomer; forming two symmetrically arranged curved surface single bodies;

and 3, if a longer spiral curved surface structure is needed, repeating the step 1 and the step 2 until the planar plate is completely curled into the spiral curved surface structure containing a plurality of curved surface monomers.

Further, θ is between 15 ° and 60 °.

Further, θ is 45 °.

The manufacturing method has the advantages that: simple manufacture and low cost.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the first curved surface element of the present invention;

FIG. 3 is a schematic view of a second curved surface element according to the present invention;

FIG. 4 is a schematic view showing a state in which the present invention is arranged in multiple layers;

FIG. 5 is a schematic view of a bumper according to the present invention;

in the drawings, the parts names represented by the respective reference numerals are listed as follows: 1. the energy absorption bumper comprises a first curved surface, a cylindrical curved surface, a second curved surface, a cylindrical curved surface, a connecting surface, a cylinder, a bumper 6-1 and an energy absorption box.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

As shown in fig. 1-3, a helical curved surface structure includes at least two curved surface units, two adjacent curved surface units are symmetrically disposed, each curved surface unit includes a first curved surface 1, a second curved surface 3 and a cylindrical curved surface 2 connected to the first curved surface 1 and the second curved surface, the cylindrical curved surface 2 spirally rises or spirally falls, the first curved surface 1 is connected to a lower cross section of the cylindrical curved surface 2, and an upper cross section of the cylindrical curved surface 2 is connected to the second curved surface; the two curved surface monomers are connected by their respective second curved surfaces 3. Two adjacent curved surface monomers are symmetrically arranged about the connecting surface 4.

The spiral curved surface structure is integrally formed.

The cylindrical curved surface 2 is formed by spirally ascending or spirally descending a plane plate.

The slope of the cylindrical curved surface 2 in the spiral ascending is 1, and the slope of the cylindrical curved surface 2 in the spiral descending is-1. The first curved surface 1 and the second curved surface 3 are both triangular structures.

The axes of the cylindrical curved surfaces 2 of the two curved surface monomers form an included angle of 90 degrees.

When the invention is used for the automobile bumper, as shown in fig. 4-5, the invention also relates to a bumper 6, which comprises a beam and energy absorption boxes 6-1 arranged at two sides of the beam, wherein a plurality of layers of the spiral curved surface structures are arranged in the energy absorption boxes 6-1.

The invention also relates to a manufacturing method of the spiral curved surface structure, which comprises the following steps,

step 1, placing a cylinder at one end of a planar plate, wherein the planar plate is of a rectangular structure, the axis of the cylinder forms an included angle of 45 degrees with the length direction of the planar plate, and the vertical central plane of the cylinder passes through the lower vertex angle of the head end of the planar plate; bending the plate upwards by 360 degrees along the cylindrical spiral to obtain a curved surface single body;

step 2, after the cylinder is drawn out, the cylinder is rotated 90 degrees anticlockwise by taking the intersection point of the vertical central plane of the cylinder and the upper edge of the plane plate as the center of a circle; bending the plate upwards by 360 degrees along the cylindrical spiral to obtain another curved surface monomer; forming two symmetrically arranged curved surface single bodies;

and 3, if a longer spiral curved surface structure is needed, repeating the step 1 and the step 2 until the planar plate is completely curled into the spiral curved surface structure containing a plurality of curved surface monomers.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.