A HSM manufacturing process for the arm of a carbon fiber manipulator

Abstract

The invention discloses an HSM manufacturing process for an arm rod of a carbon fiber mechanical arm. The method comprises the steps that firstly, heat self-expanding high-energy gel, fiber presoakedcloth and a pre-buried pipe are cut; the heat self-expanding high-energy gel wrapped pre-buried pipe is put into a core material mold; the mold is closed and heated to 80-100 DEG C, and the mold is maintained for 3-30 minutes at 80-100 DEG C; at the temperature, the heat self-expanding high-energy gel is micro-expanded in advance and is filled with the core mold cavity, and cooling demolding is carried out to take out the pre-shaped core material; then the fiber pre-soaked cloth wraps the pre-shaped core material, and a prefabricated part is obtained; the prefabricated part is put into a forming mold, the mold is closed and heated to the forming temperature of 120-180 DEG C, and the forming time is 10-60 minutes; and cooling and demolding is carried out, the part is taken out, and the armrod of the carbon fiber mechanical arm is obtained. The arm rod of the carbon fiber mechanical arm is large in bearing capacity and good in rigidity, and the self-weight is light; and the action is stable when the workpiece is grabbed, the moving speed is high, and the positioning precision is good.

Description

technical field [0001] The invention belongs to the field of automatic mechanical devices, and in particular relates to an HSM manufacturing process of a carbon fiber mechanical arm arm. Background technique [0002] The robotic arm is the most widely used automatic mechanical device in the field of robotics. It can be seen in industrial manufacturing, medical treatment, entertainment services, military, semiconductor manufacturing, and space exploration. Although their shapes are different, they all have a common feature, that is, they can accept instructions and precisely locate a certain point in three-dimensional (or two-dimensional) space for operation. [0003] During the design process of the mechanical arm, it is required that the arm should have a large load-carrying capacity, good rigidity, and light weight. The rigidity of the arm directly affects the smoothness of the movement, the speed of movement and the positioning accuracy when the arm grabs the workpiece. ...

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Problems solved by technology

[0006] 1. Hand lay-up process requires less investment in equipment and good product appearance, but there are also the following problems: 1. Solvent volatilization pollutes the environment, and at the same time endangers health and is not environmentally friendly; 2. The bonding force between fiber material layers is not good, and the product strength is not high enough; 3. The curing process is slow and the production efficiency is low. Although the cost is low, it is easy for individuals to DIY production, but it is not suitable for mass production

[0007] 2. Core material molding process. The pressure of the product during molding comes from an external press, that is, the hard foam core material is used to outsource the cement layer and then the fiber prepreg is preformed. The hard foam materials used include PMI, PU, PVC, balsa wood, etc. need to be cut into pre-shaped core materials by CNC, put into the mold cavity, heated and pressurized, and the resin is cured and formed to obtain products. The efficiency is high. Existing problems: 1. The process is complex and rigid foam The core material needs to be cut by CNC in advance, which increases equipment investment. 2. The foam material and fiber prepreg must be additionally added with a cement layer, which increases the material cost. 3. Due to uneven force, it is difficult to obtain an excellent product appearance; 4. The core material is in the There is no expansion force from the inside to the outside in the molding process, so the interlayer bonding force of the fiber is not good, the bonding is uneven, and the overall strength of the product is easily delaminated; 5. Large-sized workpieces require large-tonnage presses. Large investment in equipment is not conducive to popularization

This method can realize the hollow structure of the mechanical arm by blowing air in the middle of the nylon air pipe. There are problems at this stage: 1. Air blowing and hot pressing molding. In this industry, there is a 3-5% defective rate due to air leakage; 2. The investment of air blowing equipment is required; 3. The non-stereoscopic support structure of the preform obtained by wrapping the high-energy adhesive with fiber prepreg makes it difficult to control the product size stably, and it is easy to cause defective rates such as dislocation of the fiber layup in the final product; 4. It belongs to the intermittent production mode, and the production efficiency is low; 5. Due to the limitation of the shape of the air duct, it is difficult to apply complex products

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