阅读说明：本技术 碳纤维复合材料细长杆内腔自动修整装置及使用方法 (Automatic trimming device for inner cavity of slender rod made of carbon fiber composite material and using method ) 是由 张娟娟 颛孙晓岩 谢龙 郝玉 贾娜 惠效禹 郭聪 韩文婷 杨赟 于 2020-06-16 设计创作，主要内容包括：本发明提供了一种碳纤维复合材料细长杆内腔自动修整装置及使用方法,包括：导杆、齿轮、固定板和限位标尺；所述第一固定板和第二固定板设置在导杆的中部；所述齿轮设置在第一固定板和第二固定板的上下位置,所述齿轮与电机配合使用,通过两个齿轮连接实现自动连续打磨；所述限位标尺固定在导杆中部碳纤维复合材料细长杆件端口处。本发明降低了劳动强度,提高打磨表面质量,并且定量控制了修整量,提高了产品一致性和可靠性；固定板与导杆之间通过机械连接,满足反复拆卸,且在导杆上的位置可以调节能满足不同长度杆件,通用型强。(The invention provides an automatic trimming device for an inner cavity of a slender rod made of a carbon fiber composite material and a using method, wherein the automatic trimming device comprises the following components: the device comprises a guide rod, a gear, a fixing plate and a limit scale; the first fixing plate and the second fixing plate are arranged in the middle of the guide rod; the gear is arranged at the upper and lower positions of the first fixing plate and the second fixing plate, the gear is matched with the motor for use, and automatic continuous polishing is realized through the connection of the two gears; and the limiting scale is fixed at the port of the slender rod piece made of the carbon fiber composite material in the middle of the guide rod. The invention reduces the labor intensity, improves the quality of the polished surface, quantitatively controls the finishing amount and improves the consistency and reliability of products; through mechanical connection between fixed plate and the guide arm, satisfy and dismantle repeatedly, and the position on the guide arm can be adjusted and can satisfy different length member, and the commonality is strong.)

1. An automatic trimming device for an inner cavity of an elongated rod made of carbon fiber composite materials is characterized by comprising: the device comprises a guide rod, a gear, a first fixing plate, a second fixing plate and a limiting scale;

the first fixing plate and the second fixing plate are arranged in the middle of the guide rod;

the gear is arranged at the upper and lower positions of the first fixing plate and the second fixing plate, the gear is matched with the motor for use, and automatic continuous polishing is realized through the connection of the two gears;

and the limiting scale is fixed at the port of the slender rod piece made of the carbon fiber composite material in the middle of the guide rod.

2. The automatic trimming device for the inner cavity of the slender rod made of carbon fiber composite material as claimed in claim 1, wherein the outer dimension of the guide rod is adjustable.

3. The automatic trimming device for the inner cavity of the slender rod made of carbon fiber composite material as claimed in claim 1, wherein the guide rod is attached with a detachable polishing medium.

4. The automatic trimming device for the inner cavity of the slender rod made of carbon fiber composite material as claimed in claim 1, wherein the guide rod is provided with one or more through holes.

5. The automatic trimming device for the inner cavity of the carbon fiber composite elongated rod of claim 1, wherein the first fixing plate and the second fixing plate are movably connected with the guide rod.

6. The automatic trimming device for the inner cavity of the slender rod made of carbon fiber composite materials as claimed in claim 1, wherein the limiting ruler is movably connected with the guide rod.

7. The automatic trimming device for the inner cavity of the slender rod made of carbon fiber composite materials as claimed in claim 1, wherein the limit ruler is provided with scales, and the precision is 0.02 mm.

8. A method for using an automatic trimming device for an inner cavity of an elongated carbon fiber composite rod, which is characterized in that the automatic trimming device for the inner cavity of the elongated carbon fiber composite rod, which is disclosed by any one or more of claims 1 to 7, is adopted, and comprises the following steps:

step 1: calculating the thickness of a glue layer when the two structural members are glued according to a gluing strength theory, and trimming the inner cavity;

step 2: adjusting the outer dimension of the guide rod to a first scale value according to the scale of the limit scale, and fixing the first fixing plate and the second fixing plate on the guide rod;

and step 3: starting a motor, detecting the pressure of the guide rod on the side wall of the slender rod through a sensor, and if the pressure is smaller than a preset threshold value, judging that the inner cavity reaches a first scale value;

and 4, step 4: adjusting the outer dimension of the guide rod to be a second scale value, starting the motor, detecting the friction force between the guide rod and the slender rod through the sensor, and if the friction force is smaller than a preset threshold value, judging that the inner cavity reaches the second scale value;

and 5: and (5) repeatedly executing the steps 1-4 until the process requirement value is reached, and finishing.

9. The method of using the device for automatically trimming the inner cavity of the carbon fiber composite elongated rod according to claim 8, wherein the first scale value is equal to or greater than an actual inner cavity measurement value, and the second scale value is greater than the first scale value.

10. The use method of the automatic trimming device for the inner cavity of the carbon fiber composite material slender rod according to claim 8 is characterized in that when the thickness of a glue layer is 0.1-0.2 mm, the gluing strength is the largest, and the trimming amount of the inner cavity is 0.2-0.6 mm.

Technical Field

The invention relates to the technical field of composite materials, in particular to an automatic trimming device for an inner cavity of a slender rod made of a carbon fiber composite material and a using method of the automatic trimming device.

Background

The carbon fiber composite material rod piece has strong designability and has the functions of bearing force, providing an installation interface and the like, so that the carbon fiber composite material rod piece is greatly used in a new generation of satellite truss structures. A large number of metal embedded parts are usually arranged in the rod piece, and the inner cavity of the slender rod is usually rough due to a forming method and poor in size uniformity, so that the slender rod cannot be directly glued with the embedded metal embedded parts. The size of the inner cavity needs to be trimmed before the metal embedded part is bonded, the structure of the single long and thin rod is limited, the conventional trimming tool can reach a small size, and the trimming amount cannot be controlled quantitatively.

At present, the current situation of trimming the inner cavity of the slender rod is still in a manual stage, the size precision of the inner cavity cannot be guaranteed by manual trimming, the repeatability of trimming data of the rod pieces in the same batch is poor, and the reliability is poor due to excessive dependence on manual feeling.

Patent document CN109333251A (application No. 201811480756.5) discloses a noncircular cavity grinding apparatus and a grinding method thereof, the apparatus including: the front end of the bracket is connected with an auxiliary bracket, and the auxiliary bracket is connected with a supporting sleeve; the output end of the motor is connected with the transmission, the output end of the transmission is connected with the grinding rod, and the grinding rod extends into one end of the supporting sleeve pipe, extends out of the other end of the supporting sleeve pipe and is connected with the grinding head. The method comprises the following steps: 1) mounting a grinding device; 2) installing a workpiece to be machined; 3) installing an auxiliary device; 4) aligning and aligning a tool; 5) programming trial grinding; 6) trimming the grinding head; 7) and grinding the inner cavity.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an automatic trimming device for an inner cavity of a carbon fiber composite material slender rod and a using method thereof.

The invention provides an automatic trimming device for an inner cavity of a carbon fiber composite material slender rod, which comprises: the device comprises a guide rod, a gear, a first fixing plate, a second fixing plate and a limiting scale;

the first fixing plate and the second fixing plate are arranged in the middle of the guide rod;

the gear is arranged at the upper and lower positions of the first fixing plate and the second fixing plate, the gear is matched with the motor for use, and automatic continuous polishing is realized through the connection of the two gears;

and the limiting scale is fixed at the port of the slender rod piece made of the carbon fiber composite material in the middle of the guide rod.

Preferably, the guide rod is adjustable in external dimension.

Preferably, the guide rod is attached with a detachable grinding medium.

Preferably, one or more through holes are formed in the guide rod.

Preferably, the first fixing plate and the second fixing plate are movably connected with the guide rod.

Preferably, the limit ruler is movably connected with the guide rod.

Preferably, the limiting ruler is provided with scales, and the precision is 0.02 mm.

The use method of the automatic trimming device for the inner cavity of the carbon fiber composite material slender rod provided by the invention comprises the following steps:

step 1: calculating the thickness of a glue layer when the two structural members are glued according to a gluing strength theory, and trimming the inner cavity;

step 2: adjusting the outer dimension of the guide rod to a first scale value according to the scale of the limit scale, and fixing the first fixing plate and the second fixing plate on the guide rod;

and step 3: starting a motor, detecting the pressure of the guide rod on the side wall of the slender rod through a sensor, and if the pressure is smaller than a preset threshold value, judging that the inner cavity reaches a first scale value;

and 4, step 4: adjusting the outer dimension of the guide rod to be a second scale value, starting the motor, detecting the friction force between the guide rod and the slender rod through the sensor, and if the friction force is smaller than a preset threshold value, judging that the inner cavity reaches the second scale value;

and 5: and (5) repeatedly executing the steps 1-4 until the process requirement value is reached, and finishing.

The first scale value is larger than or equal to the measured value of the inner cavity, and the second scale value is larger than the first scale value.

When the thickness of the glue layer is between 0.1mm and 0.2mm, the glue joint strength is the maximum, and the trimming amount of the inner cavity is between 0.2mm and 0.6 mm.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention reduces the labor intensity and improves the quality of the polished surface;

2. the invention quantitatively controls the trimming amount and improves the consistency and reliability of products;

2. the fixing plate is mechanically connected with the guide rod, so that repeated disassembly is met, the positions of the guide rod can be adjusted, rod pieces with different lengths can be met, and the universal type is strong.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural view of an automatic polishing and dust removing device for an inner cavity of a carbon fiber rectangular rod piece.

In the figure: 1-a guide rod; 2-a gear; 3-a first fixing plate; 4-a through hole; 5-second fixing plate 2; 6-limiting scale.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.