CN212019778U - A frock clamp for carbon-fibre composite laser system hole - Google Patents

Abstract

The utility model discloses a frock clamp for carbon-fibre composite laser system hole, the anchor clamps hypoplastron of the anchor clamps upper plate and middle fretwork of middle fretwork, the anchor clamps upper plate is installed and is used for clamping carbon-fibre composite on the anchor clamps hypoplastron, and the bolt rigid coupling is passed through with the both sides of anchor clamps hypoplastron to the anchor clamps upper plate. The utility model discloses a when frock clamp cooperation picosecond pulse laser scanning system hole, can effectively dispel the heat, reduce the processing district temperature, reduce the heat radiation district, ensure system hole quality and precision. The utility model discloses a frock clamp can improve the processing effect of laser system hole method. Compared with the existing working clamp, the heat radiation area can be reduced, the roughness of the inner wall of the round hole is reduced, and the hole making precision is improved.

Description

A frock clamp for carbon-fibre composite laser system hole

Technical Field

The utility model relates to a frock clamp for carbon-fibre composite laser system hole belongs to carbon-fibre composite laser beam machining technical field.

Background

Carbon Fiber composite materials (CFRP) have the advantages of high specific strength, large specific stiffness, small density, stable structure size, strong designability, good fatigue resistance and corrosion resistance and the like, and are superior properties of incomparable and replaceable other traditional materials, so that the Carbon Fiber composite materials are widely applied to the fields of aviation, automobiles, rail transit and the like.

After CFRP is formed, a large amount of hole making processing is needed in most cases to meet the requirements of assembly, connection and the like, and the processing quality of a connecting hole directly relates to the assembly quality and the service life of parts. The CFRP is a two-phase or multi-phase structure composed of carbon fibers and a matrix, has non-homogeneity and anisotropy, and the hardness of the carbon fibers is very high, so that the problems such as cutter abrasion, composite material layering, fiber breakage, performance deterioration after processing and the like easily occur by adopting a traditional mechanical processing mode. Laser machining can overcome various difficulties faced in the technical aspects, such as the need of contact machining, expensive vacuum equipment, incapability of machining dense materials and non-lithographic samples, and the like, and thus has great preference in the field of special machining.

However, the carbon fiber reinforcement in the CFRP has considerable difference from the matrix in terms of thermal expansion coefficient, vaporization temperature and other thermal mechanical properties, so that defects such as a heat affected zone, fiber extraction, composite material delamination, fiber end expansion and the like are easily caused in the laser processing process, the static strength of the CFRP is seriously affected, and the laser processing of the CFRP faces huge challenges. In view of this, the applicant adopts a picosecond pulse laser combined with a well-designed scanning track hole making method, and because the picosecond pulse laser has typical ultrashort pulse width and ultrahigh peak power characteristics, the defects of thermal effect and the like easily caused by long pulse laser processing can be avoided, and compared with femtosecond laser, the processing cost is low, and the processing efficiency is higher. However, when the existing tool clamp is used for drilling the carbon fiber composite material in cooperation with picosecond laser, the heat dissipation performance needs to be improved, and the processing quality of the drilling method is affected to a certain extent.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a frock clamp for carbon-fibre composite laser system hole is provided, picosecond pulse laser can effectively improve the system hole quality to CFRP.

The technical scheme for solving the problems can be implemented as follows:

the fixture comprises an upper fixture plate with a hollow middle part and a lower fixture plate with a hollow middle part, wherein the upper fixture plate is arranged on the lower fixture plate and used for clamping the carbon fiber composite material, and the upper fixture plate is fixedly connected with two sides of the lower fixture plate through bolts.

Further, the clamp upper plate and the clamp lower plate are both made of carbon fiber composite materials.

And the hollow area between the upper clamp plate and the lower clamp plate is square.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the utility model discloses a frock clamp sets up the fretwork district in the centre of anchor clamps upper plate and anchor clamps hypoplastron, and when cooperation picosecond pulse laser scanning system hole, can effectively dispel the heat, reduces the processing district temperature, reduces the heat radiation district, ensures system hole quality and precision.

2. The utility model discloses a frock clamp can improve the processing effect of applicant's laser system hole method. Through the working clamp and reasonable process parameters and matching with the scanning track of circling from outside to inside, the prepared hole has good surface appearance, neat edge and no obvious defect. Compared with the existing working clamp, the heat radiation area can be reduced, the roughness of the inner wall of the round hole is reduced, and the hole making precision is improved.

3. The clamp upper plate and the clamp lower plate are both made of carbon fiber composite materials, and heat radiation can be further reduced.

Drawings

Fig. 1 is a schematic structural view of a tool clamp according to a preferred embodiment of the present invention. In the figure: 1 is a carbon fiber composite material; 2, a clamp upper plate; 3 is a lower clamp plate; 4 is a bolt; and 5, laser beams.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments. The objects, aspects and advantages of the present invention will become more apparent from the following description. It should be understood that the described embodiments are presently preferred, but not all embodiments of the invention.

The utility model provides a frock clamp for carbon-fibre composite laser system hole, anchor clamps hypoplastron 3 including the anchor clamps upper plate 2 and the middle fretwork of middle fretwork, anchor clamps upper plate 2 is installed on anchor clamps hypoplastron 3 for with 1 clamping of clamping carbon-fibre composite between the two, 4 rigid couplings of bolt are passed through on anchor clamps upper plate 2 and the both sides of anchor clamps hypoplastron 3, and laser beam 5 is processed in the middle fretwork district of anchor clamps upper plate 2 and anchor clamps hypoplastron 3. The middle hollow area between the upper clamp plate 2 and the lower clamp plate 3 is preferably square.

The utility model discloses a frock clamp sets up the fretwork district in the centre of anchor clamps upper plate and anchor clamps hypoplastron, and when cooperation picosecond pulse laser scanning system hole, can effectively dispel the heat, reduces the processing district temperature, reduces the heat radiation district, ensures system hole quality and precision.

The above description is only for the purpose of illustration of the preferred embodiments of the present invention, and it is not intended to limit the scope of the present invention, and it is obvious that any person skilled in the art can easily conceive of alterations and modifications to obtain other embodiments based on the above embodiments, and these should be covered by the scope of the present invention.

Claims (3)

1. The utility model provides a frock clamp for carbon-fibre composite laser system hole which characterized in that:

the fixture comprises an upper fixture plate with a hollow middle part and a lower fixture plate with a hollow middle part, wherein the upper fixture plate is arranged on the lower fixture plate and used for clamping carbon fiber composite materials, and the upper fixture plate is fixedly connected with two sides of the lower fixture plate through bolts.

2. The tooling clamp for laser drilling of the carbon fiber composite material according to claim 1, characterized in that:

the clamp upper plate and the clamp lower plate are both made of carbon fiber composite materials.

3. The tooling clamp for laser drilling of the carbon fiber composite material according to claim 1, characterized in that:

and the hollow area between the upper clamp plate and the lower clamp plate is square.

Images