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Basic information

Smart Fastening

Smart Optics

Rroduct

Zmart is a representative organization of Kistler Remscheid (formerly Schatz) in Germany and AFS Advanced Connection Technology Research Institute in China. It was funded by Zwick China and has a German enterprise background. Its headquarters are located in Shanghai, and it has a joint laboratory for fastening connection technology with Huace Testing in Shanghai.

Smart Fastening

Committed to introducing advanced fastening assembly design, testing and verification technology to assist China in intelligent design and manufacturing. We specialize in providing software and hardware products and services for fastening connections throughout their entire lifecycle.

Smart Optics

Zimao Intelligent Optical Dimension Measurement is rooted in providing an overall solution for fasteners, strip steel, threaded steel, and round steel. As an industrial foundation, threaded steel has a basic tone for people's livelihood. The fully automatic intelligent optical reinforcement detection system breaks through traditional detection and lays a solid foundation for high-precision intelligent manufacturing.

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Friction coefficient testing machine

The quality characteristics of bolts and nuts during installation have a direct impact on the quality of bolted connections. Functional testing is the most important analytical method used in the assembly process. It determines the mechanical characteristics and functions of the fastening parts to ensure their quality. Simultaneously determine the friction coefficient, preload, and torque. And in this process, comply with international standards and simulate usage conditions as realistically as possible.

Ultrasonic axial force testing and analysis system

Unlike ordinary ultrasonic equipment, the Ifast ultrasonic axial force analysis and testing system Digital acquisition can be performed on the entire tightening process Short or long-term axial force monitoring of bolts Using the German professional fastener analysis and testing software TestXpert in conjunction with Kistler tightening equipment ® Conduct and process analysis

Thread Assembly Tool Testing System

In order to achieve reliable bolt connections in modern industrial production processes, a reliable tightening gun is crucial. Not only must the tightening gun be calibrated and certified before assembly, but it must also be repeatedly tested during the assembly process. The purpose is to ensure continuous high performance in order to achieve optimal assembly results and meet established standards.

Smart fastening wrench

Whether it is a soft connection tightening point or a hard connection tightening point, the torque decreases to varying degrees after completing the tightening process. How to find residual torque and how to find residual axial force has become an urgent problem that every tightening process engineer hopes to solve. The detection of residual torque values requires good tools to ensure the reliability and repeatability of the detection results. KISTLER's New Generation Intelligent Wrench Inspector has comprehensive residual torque testing function There are various built-in testing methods that can customize the detection mode according to customer needs.

Lateral vibration test bench

The lateral vibration test bench is equipped with an adjustable amplitude driving device, which is used for force sensors for lateral loads, high-precision displacement sensors, and sensors that can be replaced according to bolt size to measure clamping force and thread friction. During the vibration test, the test product is installed on the test bench according to the actual construction process, and the test conditions, such as test frequency and amplitude, are set using Kistler software. The experimental system will monitor and record in real-time the attenuation of clamping force, lateral thrust magnitude, thread torque, and other data that you are concerned about. The amplitude and frequency information during the lateral vibration testing process are controlled by the measurement and control unit.

Simulated assembly test system

In assembly testing, it is required that the test results obtained must be free of any "false evidence" - especially, if the position of the fasteners on the required test components is the actual installation conditions, this type of testing is considered challenging.

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Fully automatic steel bar shape and size measuring instrument

Zimao Intelligent Optical Dimension Measurement is rooted in providing an overall solution for fasteners, strip steel, threaded steel, and round steel. As an industrial foundation, threaded steel has a basic tone for people's livelihood. The fully automatic intelligent optical reinforcement detection system breaks through traditional detection and lays a solid foundation for high-precision intelligent manufacturing Breaking through the pain points of traditional manual offline measurement, switching between multiple measuring tools, and the inability to effectively save and trace data, we aim to create a new scenario for intelligent optical detection. The fully automatic intelligent optical steel bar size detection system (RM) can accurately and quickly measure the transverse and longitudinal ribs, width, height, and other dimensions of various types of ribbed steel bars in multiple scenarios through built-in rich steel bar detection standards. The developed data interface enables the sharing and export of test data in multiple ways

Fully automatic bolt size measuring instrument

A fully automatic optical bolt size measuring instrument developed from Germany for measuring the overall dimensions of fasteners in different industries. This device can automatically measure the geometric shape of rotating samples such as screws and bolts. Whether placed on site or in the laboratory, this equipment can greatly integrate conventional measurement methods, improving measurement efficiency. The convenient management mode of measuring big data will become a reliable choice for fastener enterprises to make a leap in quality.

Imess

Imess is an independent manufacturer of laser and optical camera inspection equipment. Since 1998, the Imess team has solved demanding inspection tasks in optical quality assurance and developed innovative inspection technologies to support your production line in achieving efficient, high yield, and high-quality levels.
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生产过程中计量的品质控制用语:


Classification: Media News

Release Time:2026-05-13 16:05

生产过程中计量的品质控制用语:

品质控制(Quality Control, QC)

为经济实惠地制造品质符合客户要求的产品或服务而采取的方法体系。

过程质量控制(Process Quality Control)

通过过程控制减少产品的分散性,并保持较佳的分散性。
促进改进工艺、标准化以及技术经验的积累。

统计过程控制(Statistical Process Control, SPC)

通过统计方法处理的过程控制。

总体(Population)

考虑改进和控制过程和产品品质的一组具有特征的对象全体。基于样本的抽样结果来评估其代表性。

批次(Lot)

在同等条件下生产的产品集合。

样品(Sample)

从样本中挑选出的产品或项目中的一件,供研究调查其特性。

样品量(Sample Size)

是指样品中所包含的抽样单位的数量。

偏差(Bias)

当执行多次测量时,由测量值得到均值减去真值计算而得。

散布(Dispersion, Imprecision)

目标特性的值相对于平均值的变动。标准偏差通常用来表示测量结果的波动情况。

直方图(Histogram)

直方图将最大和最小测量值的范围划分为多个区间以表示数据分布。
直方图可以显示数据的集中趋势、离散程度等特性。

  • 当数据分布不均匀时,可以通过调整直方图的宽度来改善。

  • 当数据分布均匀时,可以通过调整直方图的形状来改善。

过程能力(Process Capability)

过程能力是指满足以下条件时发挥的表示过程的性能:

  • 充分实现了工序的标准化

  • 已排除异常原因

  • 在统计管理状态下运行

当过程的规格性能超出公差范围时,过程能力用平均值 ± 3σ 表示(σ 表示标准偏差)。

过程能力指数(Cp)

单边公差 —— 只有公差上限

单边公差 —— 只有公差下限

双边公差(典型例子)

过程能力指数(Cpk)

单边公差 —— 只有公差上限

单边公差 —— 只有公差下限

双边公差(典型例子)

当  时,过程中心与公差中心重合,且过程能力与公差极限基本一致,处于临界状态;
当  时,过程能力不足,存在超出公差范围的风险;
当  时,过程能力充足,能够稳定生产合格产品。

控制图(control chart)

通过将过程变化分为由于偶然原因和由于故障引起的变化来控制过程。控制图由一条中心线(CL)以及在其上方和下方(UCL和LCL)合理确定的控制限制线组成。可以说,在绘制表示过程输出的特征值时,如果所有点都在无明显趋势的控制上限线和控制下限线以内,则过程处于统计控制状态。控制图是控制过程输出以及品质的有用工具。

偶然原因(chance causes)

这些变化原因的重要性相对较低。即使可以找到原因,也无法从技术或经济上消除原因。

X-R控制图(X-R control chart)

用于过程控制的控制图,在整个过程中提供绝大部分的信息。-R控制图由以下构成。

· 监视过程平均值的偏差,根据各子组的平均值管理的控制图。

· 监视偏差的异常,根据范围管理的R管理图。

通常情况下,两个图表一起使用。

如何读取控制图

如下所示的控制图中的连续点位的典型趋势,是不希望出现的。这些趋势意味着一个“特殊原因”正在影响过程和需要操作员采取措施去纠正。这些判定规则只提供一个引

导。当实际确定规则时,要考虑到过程中的具体变化。假设控制上限和控制下限距离中心线3σ处,将控制图划分成六个区,每1σ个间隔,适用下列规定。这些规则适用于X

控制图和X控制图。需要注意的是,这些“措施趋势规则”是在假设正态分布的情况下而制定的。可以制定适应任何其他分配的规则。

兹懋Zmart是一家专注于引进德国先进紧固装配设计和测试验证技术的公司,致力于推动智能制造和设计的发展。我们提供紧固连接全生命周期的软硬件产品及服务,涵盖设计、验证、装配和质量控制的各个环节。公司与华测检测(CTI)合作,在上海设立了紧固连接实验中心,提供专业的测试和验证服务。同时,我们还设立了中德连接技术学院,提供紧固件专业培训及人员资质认证的核心课程。兹懋Zmart凭借专业的技术实力和丰富的行业经验,致力于成为智能制造领域的重要合作伙伴。