探头和测针系统的设计及质量对接触测量结果具有决定性影响。蔡司测针产品系列包含从红宝石到金刚石球形测针、盘形测针以及星形测针等7,000余种测针,独家提供质量优良的完整测针系统。您定能从中寻获满足您测量过程和工件的解决方案,而我们的计量专家也会竭诚为您提供建议,助您选择正确的测针。

蔡司测针如此独树一帜,原因如下:

  • 精密:我们的测针可实现精密测量,并以出色的精度提供可重复的结果。
  • 优质:由于我们采用前沿生产技术,测针具有高精度、高稳定性及耐用性。
  • 精湛:相比常规M3测量探头,蔡司M3 XXT测针可实现更高的整体系统刚度。
  • 快速方便:我们精湛的标准测针系列和蔡司计量商店可及时为您提供所需测针。
  • 多样性:您可以使用我们的专业测针测量任何对象。除球形测针外,您还可以在我们的产品系列中找到星形测针、柱形测针、T形测针及其他众多测针产品。

每次使用测针皆可达到名副其实的蔡司质量

质量决定一切:测针虽小,但却是三坐标测量机的重要组成部分,其通过探头端部接触待测工件,执行高精度测量。

质量低劣的探头会严重影响测量精度。这会导致严重的测量误差,从而增加废品率。测针使用寿命也受质量的显著影响。使用高质量蔡司测针可有效解决这个问题。

该图显示了一个带有勾选标记的图标式放大镜。

识别质量

如何识别高质量的测针?裸眼很难识别,但在显微镜下,通常会有明显不同。测量探头的质量主要体现在表面光洁度和接头设计。另外,质量也是决定一款测针能否长期保持精确测量结果的重要因素, 而出色的测针刚度、测针元件的几何精度及测球的最大圆度也是检验质量的要素。蔡司凭借严格的制造工艺,促使测针具有有口皆碑的高品质。

该图显示了一个带有数字1的图标式奖丝带。

前沿生产技术

相比传统制造工艺,最新技术(如钎焊和激光加工以及高端材料的使用)可显著提高测针的使用寿命和质量。这节约了宝贵的资源,您可以为客户提供完美无瑕的产品。这样就可长期获得可靠的测量结果和高重复性,我们的高精度测量探头随附合格证,作为承诺精度的保证。

这便是蔡司M3 XXT测针如此独树一帜的原因所在

您是否了解,相较于常规M3测量探头,蔡司M3 XXT测针显著提高了测针系统的整体刚度?XXT接头基体直径增加了1毫米,也就是说具有更大的接触面积,同时还使用了钛合金,这就确保了其刚度。如果没有相应的接头,不建议在M3 XXT系统中使用M3测针。

蔡司专业测针,测量皆有可能

金刚石涂层一体式测针

蔡司Diamond!Scan mono是一款金刚石涂层的一体式测针。由于测球和测针采用一体式制造,消除了测球脱落的风险。一体式测针可采用任意直径和技术上可行的长度。由于金刚石涂层使用寿命长,因此在扫描过程中几乎没有磨损和材料堆积。

星形测针

星形测针为星形与球形组合的测针,可在不同坐标方向执行测量。使用球形测针从侧面进行探测仅在有限范围内可行,而使用星形测针,您可探测与被探测表面垂直的表面。

旋转探头

旋转测量探头可用于测量斜孔或斜面。测针角度变化可达110°。需要使用专用基座固定测针。

盘形测针

盘形测针主要用于测量具有退刀槽或凹槽和内孔的旋转对称工件。但是,这通常会发生表面粗糙度的强滤波。相比盘形测针,球形圆盘测针设计可实现更高的精度。

柱形测针

柱形测针可进行二维测量,尤其适用于薄板。使用柱形测量探头也可很好地测量窄工件边缘。但是,探头轴线必须非常精确地与工件结构轴线对齐。

蔡司提供专用球底柱形测针,该测针主要用于金属板测量和金属板边缘测量。这种测针具有球底,因此也可测定表面的平滑度等。

半球形测针

半球形测针适用于测量退刀槽和需要大尺寸测球直径和低重量的应用。为了增强其功能,蔡司还提供中空半球形专用测针。

T形测针

T形测针包括两个布置在相反方向的测球,测球安装方向与测杆呈90°。这种测针尤其适用于测量相对的退刀槽,如凹槽。另外,T形测针也用于测量难以接近的位置(如工件底面)。

L形测针

L形测针的测球与测杆呈90°夹角。L形测针尤其适用于测量孔内退刀槽。另外,L形测针也用于测量难以接近的位置(如工件底面)。

滚花测针

这种创新测针重量轻,具有易抓握包塑成型的棱纹接头。这样就可轻松用手固定,有效减少了工具导致的损坏。

尖测针

尖测针,也称为锥形测针,用于执行两项测量任务。这种测针用于凹槽或很小内孔的自定心探测。另一方面,这类测针也用于必须接近工件上精确的指定位置以进行点探测的情况。标准尖测针采用整体硬质合金制造。

高精度测针

对于某些应用,需要使用最高精度的测针。具有5级质量和3级测球的标准测针,由于等级的高斯分布,不适合执行高精度测量。蔡司高精度测针(通过蓝色接头可以识别)可确保所保证的测球精度,并随附合格证。例如:可提供经认证的圆度 < 60纳米的测针和保证直径公差± 0.001毫米的测针。

正在寻找理想测针?

我们庞大的全球标准测针产品组合中有任意长度的测针供您挑选

检测测针,防止磨损

即使高质量的测针也是消耗品,必须定期检查。这是防止测量结果不准确的唯一方式 - 因为从长期来看,测针元件磨损和材料脱落是无法避免的。但是,由于蔡司Diamond!Scan测针采用耐用材料,可大大延长该过程。

如果对测针的磨损情况不太确定,则应定期更换测针,以确保始终保持高精度的测量结果。尤其当测针发生碰撞或掉落在地时,更要及时更换。

If a stylus is used over a long period of time, wear is inevitable. If a stylus is used over a long period of time, wear is inevitable.

专家提示

您可通过显微镜和强光源(>1000流明)自行检查测针,并按需更换,非常方便。为此,我们建议使用10到40倍的放大倍率检查2-8毫米直径的测球。要测量小于1毫米的测针元件,应使用40到80倍放大倍率,才能很好地检测材料的磨损情况。

检测并清除探头端部的聚积材料

根据工件材料和探头端部不同,探头端部材料聚积不可避免。因此,必须定期检查和清洁测针,以减少材料聚积,防止测量不准确。对于软工件表面(如:铝),材料聚积问题更严重。在这种情况下,蔡司Diamond!Scan测针是良好的选择,因为该测针采用金刚石测球,更大限度地减少了材料聚积。

与检查测针磨损情况的方法相同,我们建议通过显微镜快速检测材料聚积。

Depending on the material, material build-up on the measuring probe tip is inevitable. Depending on the material, material build-up on the measuring probe tip is inevitable.

专家提示

使用蔡司清洁湿巾以更小的压力清洁测针。这种湿巾同样适用于清洁半球盘和校准球。对于顽固性污渍,可将测针放入适当的清洁液中浸泡片刻,然后使用蔡司超细纤维布擦干,这有助于清除污渍。清洁测针的方法还包括:使用我们的三坐标测量机清洁套装

另外,为避免其他污染,在每次开始测量前,必须确保工件表面、导轨和工件夹具清洁。

与#测量大咖一起,更深入了解测针

测针不仅包括多个构件,而且其本身也是整个测针系统的组成部分。与三坐标测量机和连接件、加长件、基座或夹紧插件相结合,测针可提供高精度及可重复性的测量结果,并具有可靠的蔡司质量。与#测量大咖一起,更深入了解测针的作用和测针生产步骤!

Frequently asked questions about styli

What do I do if my measurement has too much variation?

If a measurement shows strong fluctuations, in 90 % of the cases there is a problem with the stylus system. To fix this, you should check the reproducibility of the stylus system and optimize it if necessary.
 
Other factors can also have an influence on the accuracy of your measurements with styli:
  • Environmental influences, especially temperature
  • Fixture
  • Measuring program
  • Machine

How do I check the reproducibility of my stylus system?

You can check the reproducibility of your stylus system in three steps. Repeat steps 2 and 3 several times and compare the repeatability of the results in an evaluation tool (e.g., Excel or PiWeb):

  1. Calibrate stylus system
  2. Measure the calibration ball with the reference styli and set the position of the ball to zero
  3. Measure the ball with all styli of the stylus system and check for deviations

What ball accuracy is recommended?

The standard accuracy of the probe ball is Grade 5. For form measurements with higher accuracy, balls with better roundness are needed to minimize errors in the measurement. Note, however, that Grade 3 balls are not necessarily better than Grade 5 balls, because the grade of the probe balls is determined in a batch process. So, if a particular manufacturing batch selection is in tolerance, it is assumed that all balls are within that grade. The accuracy distribution of the balls thus corresponds to a Gaussian distribution. That is why poorer ball accuracies may also be sold in Grade 3.

If you need a styli with very accurate roundness, you should use a styli with a certificate. Only then you can be sure that the specified roundness is maintained and meets your requirements.

How do I check my styli for wearing and how often is this recommended?

A styli, like any other tool, is subject to natural wear and tear. Damage, e.g., by abrasion, scratches or chipping, or contamination, e.g., by material application, oil or paint, significantly affect the measuring accuracy. Since this is usually not visible to the bare eye, the styli should be checked under a microscope for damage or contamination. How often you should perform this inspection depends on the styli's application or the environmental parameters.

We recommend getting an overview by means of a kind of tool card, as it is also available for production machines, and to determine an inspection cycle from it.

How long can I use my styli?

How long you can use your styli depends entirely on the type of application. Wearing occurs where the probe ball touches the workpiece being measured. If the same point is always used, for example when scanning a plane, then the styli will have a shorter life than if circles are scanned, for example. This is because the entire equator of the sphere is in use. Other factors that affect styli life include scanning distance, speed, probing force, measuring environment, and the material being measured.

We recommend that you create a quality card for each styli and use it to test the styli on a regular basis. This will provide a reliable average life of the particular styli over time.

Can I continue to use a styli after a collision?

If a collision occurred, the stylus system should be checked on a ring. Since these are high-precision measuring devices, one should not take any risks. Special attention should be paid to styli or extensions with a carbon fiber shaft, as it is possible that individual fibers have been torn. This can only be detected on the ring itself. Styli with a carbide or ceramic shaft can still be used after a collision if the ball is still on the shaft.

Caution: Extreme care must be taken with dovetailed balls! In contrast to the case of glued or soldered balls in a shaft, the balls do not necessarily fall off in a mortised connection. They can remain loose on the trunnions and lead to measurement errors. Unfortunately, this often happens unnoticed, so you should check dovetailed balls immediately after a collision.

What does shaft touching mean?

If there is a contact between the workpiece and the styli shaft instead of the probe ball, there is a shaft touching. Since a shaft touching also triggers a signal at the probe head, but is not defined, shaft touching leads to incorrect measurements that often go unnoticed. When measuring with small probe balls, which usually have thin shafts, there is a risk that the shaft will bend during probing. If the fasteners used, such as angles or cubes, are of poor quality or have been inaccurately adjusted, shaft touching may also occur.

What should I look for when planning a stylus system?

You should pay attention to the following points when planning your stylus system.

The stylus system should

  • be as rigid as possible
  • have as few connection points as possible
  • weigh as little as possible
  • have as little thermal expansion as possible

You should also make sure to use high quality components, as the quality of the stylus system pays 100 % into the accuracy of your measurement results.

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