如何测量航空航天铆钉孔

2023-07-03 18:07

How to measure aerospace rivet holes – 3D, non-contact and with micron-precision

如何测量航空航天铆钉孔 - 微米级精度3D非接触式测量

Why should we care about measuring aircraft rivet holes?

我们为什么要关心测量飞机铆钉孔?

Rivets are the most common fastener used in aircraft assembly. The high-precision riveting process comprises drilling, counter sinking, and fastener installation. It is repeated hundreds of thousands of times on large aircraft – the largest passenger airliners are held together by over a million rivets!

铆钉是飞机装配中最常用的紧固件。高精度铆接工艺包括钻孔、锪孔和紧固件安装。它在大型飞机上重复了数十万次——最大的客机由超过一百万个铆钉固定在一起!

Since fasteners like rivets help ensure the structural integrity and aerodynamics of aircraft, their installation must be done not only fast, but also very precisely.
Strict quality control standards are set out for aircraft assembly facilities to ensure that aircraft panel joints can withstand the repeated stress of flight.

由于铆钉等紧固件有助于确保飞机的结构完整性和空气动力学性能,因此它们的安装不仅必须快速,而且必须非常精确。飞机装配设施制定了严格的质量控制标准,以确保飞机面板接头能够承受飞行的反复应力。

Rivets help ensure the structural integrity and aerodynamics of aircraft

铆钉有助于确保飞机的结构完整性和空气动力学性能

Quality control (QC) of
drill-and-fill riveting process

钻填铆接工艺质量控制(QC)

Several aspects of the process are subject to QC inspections:

QC 检查需要控制一下几个方面

The geometry of the aerospace rivet holes and countersinks must be within tight tolerances.

航空航天铆钉孔和埋头孔的几何形状必须在严格的公差范围内。

Their inside diameters must be free of defects such as burrs or excessive chatter (rifling) that could cause structural weaknesses under the stress of flight.

它们的内径必须没有毛刺或过度颤动(膛线)等缺陷,这些缺陷可能会在飞行压力下导致结构缺陷。

Flushness of rivet head with the surface is measured to ensure acceptable level of aerodynamic drag.

测量铆钉头与表面的齐平度以确保可接受的气动阻力水平。

GD&T parameters on this diagram were measured within several seconds. The callout parameters shown include the rivet hole diameter, the concentricity of the rivet bore hole and countersink, runout, and the countersink included angle.

此图上的 GD&T 参数是在几秒钟内测量的。显示的标注参数包括铆钉孔直径、铆钉孔和埋头孔的同心度、跳动以及埋头孔夹角。

Measurements delivered by the RIVETINSPECT system

RIVETINSPECT 系统提供的测量结果

NOVACAMTM
RIVETINSPECT
TM
3D metrology systems deliver all the required measurements to enable aircraft assemblers to integrate 100% inspection right into their automated drill-and-fill process.
Integrated with our aerospace assembly machines (robots, CNCs or gantrys), the RIVETINSPECT system delivers:

NOVACAM
TM
RIVETINSPECT
TM
3D 计量系统提供所有必需的
测量来确保飞机装配商能够将 100% 检查直接集成到他们的自动化钻孔和填充过程中。RIVETINSPECT 系统与我们的航空航天装配机械(机器人、CNC 或龙门架)集成,可提供:

Dimensional measurements
– diameter, ID length (grip length, countersink depth, etc.), cylindricity, roundness (circularity), conicity, taper, concentricity of rivet hole and countersink, included angle of countersink, angle between rivet hole and countersink axes, perpendicularity of rivet hole axis to surface plane, radius of ID grooves, rivet hole axial straightness, as well as flushness of the installed rivet head.

尺寸测量- 直径、内径长度(夹持长度、埋头孔深度等)、圆柱度、圆度(圆度)、锥度、锥度、铆钉孔和埋头孔的同心度、埋头孔的夹角、铆钉孔和埋头孔轴之间的角度、垂直度铆钉孔轴线与表面平面的距离、内径槽的半径、铆钉孔轴向直线度以及安装的铆钉头的齐平度。

Roughness
measurements

粗糙度测量

Detection and visualization of
defects
such as rifling (chatter), burrs, interlaminar gaps, offsets, tool-mark defects, dents.

缺陷的检测和可视化,例如膛线(颤振)、毛刺、层间间隙、偏移、工具痕迹缺陷、凹痕。

In most cases (and depending on rivet hole dimensions) all the above measurements can be acquired with the same probe and within the same scan as dimensional measurements.

在大多数情况下(并且取决于铆钉孔尺寸)所有上述测量都可以使用相同的探头在尺寸测量的同一扫描中获得

With this rivet ID, the following were measured: inside diameter, countersink included angle, angle between the rivet hole and countersink, and angle between the countersink and rivet hole axes.

使用此铆钉 ID,测量以下内容:内径、埋头孔夹角、铆钉孔与埋头孔之间的角度以及埋头孔与铆钉孔轴线之间的角度。

Key features and benefits of the RIVETINSPECT

RIVETINSPECT 的主要特点和优势

To support today’s increasingly data driven, robotized and automated drill-and-fill riveting process, NOVACAM RIVETINSPECT system offers:

为了支持当今日益数据驱动、机器人化和自动化的钻孔和填充铆接工艺,NOVACAM RIVETINSPECT 系统提供:

Non-contact 3D measurement of hard to access rivet hole IDs

难以接近的铆钉孔 ID 的非接触式 3D 测量

Fast dimensional measurements, typically a few seconds per hole

快速尺寸测量,通常每个孔只需几秒钟

Ability to also measure roughness and defects with the same probe

还能够使用同一探头测量粗糙度和缺陷

Ability to measure different materials (CFRP, aluminum, titanium alloys, etc.) within the same scan

能够在同一次扫描中测量不同材料(CFRP、铝、钛合金等)

Easy integration with robots for deployment right on the plant floor

与机器人轻松集成,以便直接部署在工厂车间

Immunity to the effects of ambient lighting and air perturbation.

不受环境照明和空气扰动的影响。

Scanned ID of a rivet hole and countersink shown as 3D deviation map from cylinder. A burr defect and inter-laminar gaps are visible on the rivet hole ID.

铆钉孔和埋头孔的扫描 ID,显示为圆柱体的 3D 偏差图。在铆钉孔 ID 上可以看到毛刺缺陷和层间间隙。


文件:AN-THICKNESS-1.22021-06-03

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