如何使用 Novacam 迄今為止最薄的探頭測量 1 毫米直徑的管子或孔

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

如何使用 Novacam 迄今為止最薄的探頭測量 1 毫米直徑的管或孔

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 正在擴(kuò)展我們的小直徑光學(xué)探頭產(chǎn)品，以包括迄今為止最薄的探頭，直徑為 0.5 毫米！憑借新推出的 0.5 毫米直徑探頭，高精度行業(yè)的質(zhì)量控制專家現(xiàn)在可以快速自動(dòng)測量內(nèi)徑小至 1 毫米的空間。

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 計(jì)量系統(tǒng)使用基于光纖的非接觸式光學(xué)探頭獲取表面。這些探頭有多種直徑尺寸、長度和型號(hào)可供選擇，包括側(cè)視、前視和旋轉(zhuǎn)。根據(jù)每個(gè)檢測應(yīng)用的需要，
探頭要么在采集過程中簡單地進(jìn)出狹窄空間/從狹窄空間縮回，要么在空間內(nèi)旋轉(zhuǎn)以采集整個(gè)內(nèi)徑 (ID) 的測量值。

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

讓我們看一個(gè)具有有趣內(nèi)部特征的機(jī)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)

螺紋螺母 – 更具體地說，六角螺柱 #4-40，長 0.250 英寸（6.35 毫米），小直徑為 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.

在這里，我們使用配備 0.5 毫米探頭的 Novacam TubeInspect系統(tǒng)掃描了一個(gè) 1/4 英寸長的帶 #4-40 螺紋（小直徑 ~ 0.0849 英寸（2.15 毫米））的螺紋六角螺母。

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 點(diǎn)云包含超過 1/4 百萬
微米精度的 3D 測量，如下所示。根據(jù)這一點(diǎn)云數(shù)據(jù)，應(yīng)用軟件可以快速確定關(guān)鍵的內(nèi)部參數(shù)，
例如線程特性，包括：

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

螺距（或交替每英寸螺紋數(shù) (TPI)）

the thread lead

螺紋導(dǎo)線

minor and major diameters, etc.

小徑和大徑等。

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.

使用像這樣的更高密度掃描，甚至可以輕松檢測和測量缺陷。用戶根據(jù)自己的應(yīng)用需求選擇點(diǎn)云的密度。

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

獲取的點(diǎn)云（使用 PolyWorks 幾何尺寸標(biāo)注和公差 (GD&T) 軟件查看）。測量單位為毫米。

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 直徑的探頭很容易進(jìn)入上述測量的六角支架 (#4-40)。在這里，使用了 TubeInspect 系統(tǒng)，因此螺紋螺母在旋轉(zhuǎn)臺(tái)上旋轉(zhuǎn)，同時(shí)探頭下降到內(nèi)部。另一種方法是使用 BoreInspect 系統(tǒng)，該系統(tǒng)旋轉(zhuǎn)并將探頭推進(jìn)到保持靜止的零件中。

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

連同可到達(dá)難以到達(dá)的空間內(nèi)的小直徑探頭，Novacam 系統(tǒng)具有以下重要優(yōu)勢(shì)：

Non-contact, non-destructive measurement

非接觸式、非破壞性測量

Micron or sub-micron precision

微米或亞微米精度

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

高效掃描——每秒獲取 2,100 到 100,000 個(gè) 3D 點(diǎn)——為分析提供豐富的數(shù)據(jù)集

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

甚至能夠測量高縱橫比的特征，如螺紋、凹槽、花鍵或狹小空間內(nèi)的臺(tái)階

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

系統(tǒng)集成和部署的多功能性——包括在生產(chǎn)車間和惡劣環(huán)境（放射性、高溫或低溫）中的自動(dòng)檢查。

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 非接觸式 3D 計(jì)量系統(tǒng)適用于許多高精度行業(yè)，包括航空航天、汽車、醫(yī)療儀器、國防、電子、生物醫(yī)學(xué)、精密模具制造、機(jī)械加工和 3D 打印。通常，它們為計(jì)量應(yīng)用提供了很少有人能夠解決的解決方案：
孔內(nèi)
的非接觸式測量、鉆鉚釘孔、噴射器噴嘴、桶、管、軸、
噴氣發(fā)動(dòng)機(jī)渦輪葉盤或杉木槽、具有內(nèi)部的骨科植入物線程等等。

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.

雖然 Novacam 的兩種產(chǎn)品——TubeInspect和BoreInspect——
通常是涉及難以到達(dá)空間的檢測應(yīng)用的完美匹配，但也可提供定制解決方案。

文件：AN-THICKNESS-1.2（2021-06-03）

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