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Weight-bearing soft body bionic finger and production technology thereof

A manufacturing process and finger technology, applied in the field of bionic robots, can solve problems such as affecting the effective service life of soft bionic fingers, easy elongation and deformation, and restrictions on the application of soft bionic fingers.

Pending Publication Date: 2020-10-27
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most of the current soft bionic fingers use springs, yarns, ropes, etc. as the support of the silicone-based resin material of the soft bionic fingers, which makes the soft bionic fingers easy to elongate and deform under load, which limits the load-bearing application of the soft bionic fingers , affecting the effective service life of the soft bionic finger

Method used

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  • Weight-bearing soft body bionic finger and production technology thereof
  • Weight-bearing soft body bionic finger and production technology thereof
  • Weight-bearing soft body bionic finger and production technology thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] see Figure 1 to Figure 4 , the load-bearing soft bionic finger of this embodiment includes a skin glue layer 1 , a negative Poisson's ratio knitted layer 2 , a silicon-based resin layer 3 and an air cavity 4 .

[0040] The skin glue layer 1 of this embodiment is the outermost layer of the bionic finger, which is made of a silicone-based resin material with a Shore hardness of 10HA and a Young's modulus of elasticity of 152Ka. It has the characteristics of high hardness and high elasticity to enhance bionic The touch and wear resistance of the fingers, prolonging the service life, the skin glue layer 1 is in the shape of a cylinder with one end closed, similar to the shape of a human finger, the negative Poisson’s ratio knitted layer 2 and the silicone-based resin layer 3 are located on the skin glue layer 1 internal.

[0041] Such as image 3 and Figure 4 As shown, the negative Poisson's ratio knitting layer 2 of the present embodiment is woven by carbon fiber, gla...

Embodiment 2

[0058] The content of this embodiment is basically the same as that of Embodiment 1, and the content of the same part will not be repeated. The difference from Embodiment 1 is that the negative Poisson’s ratio knitted layer 2 and the silicone-based resin layer 3 of this embodiment are molded. The composite structure adopts a 1+2 composite structure, that is, it includes a layer of negative Poisson's ratio knitted layer 2, a layer of silicone-based resin layer 3 and a layer of negative Poisson's ratio knitted layer 2 from the outside to the inside, and the hardness of the bionic finger formed is Both the degree of deformation and the degree of deformation are improved compared with the first embodiment.

[0059] Correspondingly, in the third step of the manufacturing process, the specific operation steps of molding the composite structure of the negative Poisson's ratio knitted layer 2 and the silicone-based resin layer 3 become: laying a layer of negative Poisson's ratio knitte...

Embodiment 3

[0061] The content of this embodiment is basically the same as that of Embodiment 1, and the content of the same part will not be repeated. The difference from Embodiment 1 is that the negative Poisson’s ratio knitted layer 2 and the silicone-based resin layer 3 of this embodiment are molded. The composite structure adopts a 2+2 type composite structure, that is, it includes a negative Poisson's ratio knitted layer 2, a silicone-based resin layer 3, a negative Poisson's ratio knitted layer 2 and a silicone-based resin layer from outside to inside. 3. The hardness and deformation degree of the formed bionic finger are significantly improved compared with the first embodiment.

[0062] Correspondingly, in the third step of the manufacturing process, the specific operation steps of molding the composite structure of the negative Poisson's ratio knitted layer 2 and the silicone-based resin layer 3 become: laying a layer of negative Poisson's ratio knitted layer 2 in the upper mold,...

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Abstract

The invention relates to a weight-bearing soft body bionic finger and a production technology thereof. The weight-bearing soft body bionic finger is characterized by comprising a skin adhesive layer,a negative poisson ratio knitting layer, a silicone resin layer and air cavities, wherein the skin adhesive layer is used as the outermost layer and is in a one end-closed cylindrical shape; the negative poisson ratio knitting layer and the silicone resin layer are arranged inside the skin adhesive layer; the negative poisson ratio knitting layer is characterized in that positive and negative coils are arrayed to form saw-toothed organization; the air cavities formed by square air chambers are positioned inside the negative poisson ratio knitting layer and the silicone resin layer; and the aircavities are connected with an external air cavity through a ventilation hole. The production technology comprises the steps of knitting the negative poisson ratio knitting layer, producing a die, forming the die and curing and demolding. According to the weight-bearing soft body bionic finger and the production technology thereof disclosed by the invention, the tensile strength of the bionic finger is improved by using the binding effect of the negative poisson ratio knitting layer on tensile deformation of the silicone resin layer, and the problem that the bionic finger is easily stretchedto deform during loading is solved; and the stiffness and the deformability of the bionic finger can be adjusted according to different composite structures of the negative poisson ratio knitting layer and the silicone resin layer.

Description

technical field [0001] The invention relates to the technical field of bionic robots, in particular to a load-bearing soft bionic finger and a manufacturing process thereof. Background technique [0002] Bionic finger is one of the important topics in the field of bionic robot research, and it has been widely used in practical engineering. Bionic fingers can be divided into two categories: rigid bionic fingers and soft bionic fingers. Among them, soft bionic fingers are mostly made of soft materials. Compared with rigid fingers, they have a greater degree of freedom and can actively or Passively change its own shape, and the material of the soft bionic finger is similar to the soft biological tissue, which can well simulate the movement of mollusks, and has unique advantages in the fields of movement, grasping, medical treatment, and human-computer interaction. Manipulators made of fingers have broad application prospects in the fields of service robots, special robots, med...

Claims

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Application Information

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IPC IPC(8): B21J15/00B29C69/00
CPCB25J15/0009B29C69/00
Inventor 王金凤丁沫丹
Owner ZHEJIANG SCI-TECH UNIV
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