阅读说明：本技术 一种航空发动机管路标印位置精准控制方法 (Accurate control method for marking position of aircraft engine pipeline ) 是由 杨茜 李明 苑巍 潘宝山 王忠巍 于 2020-10-30 设计创作，主要内容包括：一种航空发动机管路标印位置精准控制方法,基于管路模型的标印位置定位思路：管路产品为空间复杂形状,但每两个相邻的导管中心线可以形成一个平面,可以此为角向基准,其构成的平面为角度零点；两条中心线的交点为轴向方向的定位零点；管路标印位置通用定位工装结构利用模型提取的标印位置数据,可实现不同规格、结构管路的标印位置定位；通用设计方法：为了实现不同规格、结构管路的标印位置确定,设计了分组的定位夹瓣,只需更换夹瓣,即可实现不同规格管路的装夹。本发明的优点：提高标印效率3倍以上,同时可提高位置精度,满足航空发动机高质量、高效率、低成本的需求,质量及经济效益较大。(An accurate control method for marking positions of aircraft engine pipelines is based on a marking position positioning idea of a pipeline model: the pipeline product is in a space complex shape, but the central line of every two adjacent conduits can form a plane which can be used as an angular reference, and the plane formed by the two adjacent conduits is an angle zero point; the intersection point of the two central lines is a positioning zero point in the axial direction; the universal positioning tool structure for the pipeline marking position can realize the marking position positioning of pipelines with different specifications and structures by utilizing marking position data extracted by the model; the general design method comprises the following steps: in order to realize the determination of the marking positions of pipelines with different specifications and structures, grouped positioning clamping flaps are designed, and the clamping of the pipelines with different specifications can be realized only by replacing the clamping flaps. The invention has the advantages that: the marking efficiency is improved by more than 3 times, the position precision can be improved, the requirements of high quality, high efficiency and low cost of the aero-engine are met, and the quality and the economic benefit are larger.)

1. The precise control method for the marking position of the pipeline of the aircraft engine is characterized by comprising the following steps of: the precise control method for the marking position of the aircraft engine pipeline comprises the following steps of marking position positioning thought based on a pipeline model: the pipeline product is in a space complex shape, but the central line of every two adjacent conduits can form a plane which can be used as an angular reference, and the plane formed by the two adjacent conduits is an angle zero point; the intersection point of the two central lines is a positioning zero point in the axial direction; general location frock structure in pipeline mark position: the structure of the tool mainly comprises three parts, namely an axial positioning module with a scale, a clamping module with graduation and a grouped positioning clamping flap, and the marking position positioning of pipelines with different specifications and structures can be realized by combining marking position data extracted by utilizing a model, wherein the positioning tolerance of the angle direction is not more than +/-5 degrees, and the positioning tolerance of the axial direction is not more than +/-1 mm; the general design method comprises the following steps: in order to realize the determination of the marking positions of pipelines with different specifications and structures, grouped positioning clamping flaps are designed, and the clamping of the pipelines with different specifications can be realized only by replacing the clamping flaps; the angle scale of the clamping module is divided into a front surface and a back surface, and the zero point of the angle is a plane formed by the central lines of the adjacent conduits.

2. The method for accurately controlling the marking position of the aircraft engine pipeline according to claim 1, wherein the method comprises the following steps: the method comprises the following specific steps:

step one

Research and development pipeline marking position general location frock: based on the structural characteristics of the pipeline, the marking tool mainly comprises three parts, namely an axial positioning module with a scale, a clamping module with graduation and grouped positioning clamping flaps, the axial and angle dimensions are determined by combining extracted marking position data, the accurate positioning of the marking positions of the pipeline with different specifications and structures is realized, the positioning tolerance of the angle direction is not more than +/-5 degrees, and the positioning tolerance of the axial direction is not more than +/-1 mm;

step two,

Extracting marking position data: extracting marking position data according to the pipeline model, converting the marking position data into an angle of a plane formed by the central lines of two adjacent guide pipes, and determining an axial marking position by taking the crossed theoretical center of the two guide pipes as a starting point in the axial direction; the guide pipe is clamped into the universal tool, the tool can rotate freely along with the included angle of the guide pipe and forms a plane, and the axial length data extracted from the model and relative to a central point, including the axial size from the center of the tool to the position of a mark, is positioned and locked by the axial positioning module; after the axial position is determined, the direction of the mark positioned on the clamping flap is determined, the projection is determined, the angle is marked, the angle relative to the plane is determined, the mark position can be determined by marking according to the indexing size, and the tool is taken down after marking;

step three,

Marking: determining a marking position according to the second step, and then marking according to the marking direction of the graphic representation; the marking of the design drawing is met, and finally the engine is assembled, so that all marked places can be located in a visible direction.

Technical Field

The invention relates to the technical field of aero-engines, in particular to a method for accurately controlling a marking position of an aero-engine pipeline.

Background

The external pipelines of the aircraft engine are mostly of irregular spatial structures, and have no clear requirements on marking positions, directions and angles for a long time, only the arrow is used for indicating approximate positions, and the approximate positions are always marked by visual observation according to the positions of the images.

At present, specific requirements are put forward on the position of a pipeline mark of an aircraft engine, namely the axial size, the angle size and the direction of the mark need to be ensured. The general method is to determine the approximate angular position visually, and the vernier caliper determines the axial size, so that the position precision required by design cannot be met. The invention is a process method for determining the accurate positioning of the marking position based on the digifax and the structural characteristics of the pipeline, and independently develops process equipment for determining the marking position of the pipeline, belonging to the blank technology in the industry.

Disclosure of Invention

The invention aims to realize accurate control of a marking position of a pipeline product based on a model, and particularly provides an accurate control method of the marking position of an aircraft engine pipeline.

The invention provides a method for accurately controlling a marking position of an aircraft engine pipeline, which is characterized by comprising the following steps of: the precise control method for the marking position of the aircraft engine pipeline comprises the following steps of marking position positioning thought based on a pipeline model: the pipeline product is in a space complex shape, but the central line of every two adjacent conduits can form a plane which can be used as an angular reference, and the plane formed by the two adjacent conduits is an angle zero point; the intersection point of the two central lines is a positioning zero point in the axial direction; general location frock structure in pipeline mark position: the structure of the tool mainly comprises three parts, namely an axial positioning module with a scale, a clamping module with graduation and a grouped positioning clamping flap, and the marking position positioning of pipelines with different specifications and structures can be realized by combining marking position data extracted by utilizing a model, wherein the positioning tolerance of the angle direction is not more than +/-5 degrees, and the positioning tolerance of the axial direction is not more than +/-1 mm; the general design method comprises the following steps: in order to realize the determination of the marking positions of pipelines with different specifications and structures, grouped positioning clamping flaps are designed, and the clamping of the pipelines with different specifications can be realized only by replacing the clamping flaps; the angle scale of the clamping module is divided into a front surface and a back surface, and the zero point of the angle is a plane formed by the central lines of the adjacent conduits.

The method comprises the following specific steps:

step one

Research and development pipeline marking position general location frock: based on the structural characteristics of the pipeline, the marking tool mainly comprises three parts, namely an axial positioning module with a scale, a clamping module with graduation and grouped positioning clamping flaps, the axial and angle dimensions are determined by combining extracted marking position data, the accurate positioning of the marking positions of the pipeline with different specifications and structures is realized, the positioning tolerance of the angle direction is not more than +/-5 degrees, and the positioning tolerance of the axial direction is not more than +/-1 mm;

step two,

Extracting marking position data: extracting marking position data according to the pipeline model, converting the marking position data into an angle of a plane formed by the central lines of two adjacent guide pipes, and determining an axial marking position by taking the crossed theoretical center of the two guide pipes as a starting point in the axial direction; the guide pipe is clamped into the universal tool, the tool can rotate freely along with the included angle of the guide pipe and forms a plane, and the axial length data extracted from the model and relative to a central point, including the axial size from the center of the tool to the position of a mark, is positioned and locked by the axial positioning module; after the axial position is determined, the direction of the mark positioned on the clamping flap is determined, the projection is determined, the angle is marked, the angle relative to the plane is determined, the mark position can be determined by marking according to the indexing size, and the tool is taken down after marking;

step three,

Marking: determining a marking position according to the second step, and then marking according to the marking direction of the graphic representation; the marking of the design drawing is met, and finally the engine is assembled, so that all marked places can be located in a visible direction.

The invention has the advantages that:

the method for accurately controlling the marking position of the pipeline of the aero-engine can improve the marking efficiency by more than 3 times, can improve the position accuracy, meets the requirements of high quality, high efficiency and low cost of the aero-engine, and has high quality and economic benefit. The process method and the marking position universal positioning tool can be popularized and applied to the marking position determination of pipelines with any specification and structure.

Drawings

The invention is described in further detail below with reference to the following figures and embodiments:

FIG. 1 is a top view of a positioning tool structure;

FIG. 2 is a front view of a positioning tool structure;

FIG. 3 is a schematic view of the left and right pinching flaps;

in the figure: 1 right ruler plate, 2 left ruler plates, 3 lower pressing plates, 4 upper pressing plates, 5 right clamping petals and 6 left clamping petals.

Detailed Description

Example 1

The invention provides a method for accurately controlling a marking position of an aircraft engine pipeline, which is characterized by comprising the following steps of: the precise control method for the marking position of the aircraft engine pipeline comprises the following steps of marking position positioning thought based on a pipeline model: the pipeline product is in a space complex shape, but the central line of every two adjacent conduits can form a plane which can be used as an angular reference, and the plane formed by the two adjacent conduits is an angle zero point; the intersection point of the two central lines is a positioning zero point in the axial direction; general location frock structure in pipeline mark position: the structure of the tool mainly comprises three parts, namely an axial positioning module with a scale, a clamping module with graduation and a grouped positioning clamping flap, and the marking position positioning of pipelines with different specifications and structures can be realized by combining marking position data extracted by utilizing a model, wherein the positioning tolerance of the angle direction is not more than +/-5 degrees, and the positioning tolerance of the axial direction is not more than +/-1 mm; the general design method comprises the following steps: in order to realize the determination of the marking positions of pipelines with different specifications and structures, grouped positioning clamping flaps are designed, and the clamping of the pipelines with different specifications can be realized only by replacing the clamping flaps; the angle scale of the clamping module is divided into a front surface and a back surface, and the zero point of the angle is a plane formed by the central lines of the adjacent conduits.

The method comprises the following specific steps:

step one

Research and development pipeline marking position general location frock: based on the structural characteristics of the pipeline, the marking tool mainly comprises three parts, namely an axial positioning module with a scale, a clamping module with graduation and grouped positioning clamping flaps, the axial and angle dimensions are determined by combining extracted marking position data, the accurate positioning of the marking positions of the pipeline with different specifications and structures is realized, the positioning tolerance of the angle direction is not more than +/-5 degrees, and the positioning tolerance of the axial direction is not more than +/-1 mm;

step two,

Extracting marking position data: extracting marking position data according to the pipeline model, converting the marking position data into an angle of a plane formed by the central lines of two adjacent guide pipes, and determining an axial marking position by taking the crossed theoretical center of the two guide pipes as a starting point in the axial direction; the guide pipe is clamped into the universal tool, the tool can rotate freely along with the included angle of the guide pipe and forms a plane, and the axial length data extracted from the model and relative to a central point, including the axial size from the center of the tool to the position of a mark, is positioned and locked by the axial positioning module; after the axial position is determined, the direction of the mark positioned on the clamping flap is determined, the projection is determined, the angle is marked, the angle relative to the plane is determined, the mark position can be determined by marking according to the indexing size, and the tool is taken down after marking;

step three,

Marking: determining a marking position according to the second step, and then marking according to the marking direction of the graphic representation; the marking of the design drawing is met, and finally the engine is assembled, so that all marked places can be located in a visible direction.