如何使用 Novacam 迄今为止最薄的探头测量 1 毫米直径的管子或孔

2023-07-03 18:09

How to measure 1 mm-diameter tubes or bores using Novacam’s thinnest probes yet

如何使用 Novacam 迄今为止最薄的探头测量 1 毫米直径的管或孔

This summer, Novacam is expanding our small-diameter optical probe offering to include the
thinnest probes yet, with diameters of 0.5 mm!
With the newly launched 0.5 mm-diameter probes, quality control specialists in high-precision industries can now quickly and automatically measure spaces with inside diameters as small as 1 mm.

今年夏天,Novacam 正在扩展我们的小直径光学探头产品,以包括迄今为止最薄的探头,直径为 0.5 毫米!凭借新推出的 0.5 毫米直径探头,高精度行业的质量控制专家现在可以快速自动测量内径小至 1 毫米的空间。

As you may know, Novacam’s 3D metrology systems acquire surfaces using
fiber-based non-contact optical probes. The probes are available in a range of diameter sizes, lengths, and models, including side-looking, forward-looking, and rotational.

Depending on the needs of each inspection application, the
probes are either simply advanced into/retracted out of a tight space during acquisition, or they are rotated inside the space to acquire measurements of the entire inside diameter (ID).

您可能知道,Novacam 的 3D 计量系统使用基于光纤的非接触式光学探头获取表面。这些探头有多种直径尺寸、长度和型号可供选择,包括侧视、前视和旋转。根据每个检测应用的需要,
探头要么在采集过程中简单地进出狭窄空间/从狭窄空间缩回,要么在空间内旋转以采集整个内径 (ID) 的测量值。

Let’s look at an example of a machined part with interesting internal features.

让我们看一个具有有趣内部特征的机加工零件示例。

Threaded nut – more specifically, a threaded hex standoff #4-40, which is 0.250″ (6.35 mm) long and with
minor diameter of
0.0849″ (2.15 mm)

螺纹螺母 – 更具体地说,六角螺柱 #4-40,长 0.250 英寸(6.35 毫米),小直径为 0.0849 英寸(2.15 毫米)

Here we scanned a 1/4″ long threaded hex standoff nut with a #4-40 thread (with minor diameter ~ 0.0849″(2.15 mm)) using Novacam’s
TubeInspect
system equipped with the 0.5-mm probe.

在这里,我们使用配备 0.5 毫米探头的 Novacam TubeInspect系统扫描了一个 1/4 英寸长的带 #4-40 螺纹(小直径 ~ 0.0849 英寸(2.15 毫米))的螺纹六角螺母。

The acquired point cloud of the ID, comprising over a 1/4 million
micron-precision 3D measurements, is shown below. From this point cloud data,
application software quickly determines critical inside parameters

such as thread characteristics, including:

采集的 ID 点云包含超过 1/4 百万
微米精度的 3D 测量,如下所示。根据这一点云数据,应用软件可以快速确定关键的内部参数,
例如线程特性,包括:

the thread pitch (or alternately threads-per-inch (TPI))

螺距(或交替每英寸螺纹数 (TPI))

the thread lead

螺纹导线

minor and major diameters, etc.

小径和大径等。

With higher density scans such as this one, even defects can be easily detected and measured. The user selects the density of the point cloud depending on their application needs.

使用像这样的更高密度扫描,甚至可以轻松检测和测量缺陷。用户根据自己的应用需求选择点云的密度。

The acquired point cloud (viewed with PolyWorks geometric dimensioning and tolerancing (GD&T) software). Measurements are in millimeters.

获取的点云(使用 PolyWorks 几何尺寸标注和公差 (GD&T) 软件查看)。测量单位为毫米。

The 0.5-diameter probe easily enters the above measured hex standoff (#4-40).
Here, the TubeInspect system was used, so the threaded nut was spun on a rotational stage while the probe was lowered inside.
An alternate approach is to use the BoreInspect system, which spins and advances the probe into the part that remains stationery.0.5 直径的探头很容易进入上述测量的六角支架 (#4-40)。在这里,使用了 TubeInspect 系统,因此螺纹螺母在旋转台上旋转,同时探头下降到内部。另一种方法是使用 BoreInspect 系统,该系统旋转并将探头推进到保持静止的零件中。

Along with small-diameter probes that reach inside hard-to-reach spaces, Novacam systems offer important benefits:

连同可到达难以到达的空间内的小直径探头,Novacam 系统具有以下重要优势:

Non-contact, non-destructive measurement

非接触式、非破坏性测量

Micron or sub-micron precision

微米或亚微米精度

Efficient scanning – acquiring 2,100 to 100,000 3D points per second – to provide rich data sets for analysis

高效扫描——每秒获取 2,100 到 100,000 个 3D 点——为分析提供丰富的数据集

Ability to measure even high-aspect-ratio features such as threads, grooves, splines, or steps inside tight spaces

甚至能够测量高纵横比的特征,如螺纹、凹槽、花键或狭小空间内的台阶

Versatility of system integration and deployment – including in automated inspection on production floors and in hostile environments (radioactive, very hot or cryogenic).

系统集成和部署的多功能性——包括在生产车间和恶劣环境(放射性、高温或低温)中的自动检查。

Novacam non-contact 3D metrology systems perform in
many high-precision industries,
including
aerospace, automotive, medical instrumentation, defense, electronics, biomedical, precision mold-making, machining, and 3D printing. Often, they provide a
solution
for metrology applications that few others are able to address:
non-contact measurements inside
bores,
drilled rivet holes,
injector nozzles, barrels, tubes, shafts,
jet engine
turbine blisks
or fir tree slots, orthopedic implants with inner threads, and more.

Novacam 非接触式 3D 计量系统适用于许多高精度行业,包括航空航天、汽车、医疗仪器、国防、电子、生物医学、精密模具制造、机械加工和 3D 打印。通常,它们为计量应用提供了很少有人能够解决的解决方案:
孔内
的非接触式测量、
钻铆钉孔喷射器喷嘴、桶、管、轴、
喷气发动机
涡轮叶盘或杉木槽、具有内部的骨科植入物线程等等。

While two of Novacam products – the
TubeInspect
and the
BoreInspect
– are often the perfect match for inspection applications concerning hard-to-reach spaces, custom solutions are also available.

虽然 Novacam 的两种产品——TubeInspectBoreInspect——
通常是涉及难以到达空间的检测应用的完美匹配,但也可提供定制解决方案。


文件:AN-THICKNESS-1.22021-06-03

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