Overview
A surface roughness tester fixture is an essential accessory for precision metrology, designed to immobilize workpieces during surface texture analysis. These fixtures interface between the roughness tester and the measured object, eliminating human-induced errors from hand-holding. They are widely used in automotive, aerospace, and precision engineering sectors where micron-level surface finish validation is critical. Modern fixtures often incorporate modular designs, allowing adaptation to irregular geometries. High-end versions may include integrated leveling systems or temperature-stable materials to minimize thermal expansion effects during prolonged measurements.
Structure and Working Principle
The fixture typically consists of a base plate, adjustable clamping mechanisms, and sometimes a magnetic or vacuum attachment system. The base provides a flat reference plane, while the clamps apply controlled pressure without distorting the workpiece. Some advanced models feature spring-loaded probes that maintain consistent contact force. Working principle revolves on three axes of stability: preventing lateral movement during tracer travel, eliminating vertical bounce, and minimizing angular deflection. Many industrial-grade fixtures incorporate damping materials like polyurethane to absorb environmental vibrations that could affect measurement accuracy.
Key Features
1. Material selection: Aircraft-grade aluminum offers lightweight rigidity, while stainless steel fixtures withstand harsh environments. 2. Compatibility: Many fixtures are brand-specific, with dovetail mounts or threaded holes matching popular tester models like Mitutoyo or Taylor Hobson. 3. Adjustability: Fine-thread screws enable micron-level positioning, crucial for measuring small or curved surfaces. Specialized variants include rotary fixtures for cylindrical parts and temperature-controlled versions for laboratory use. Anti-static models prevent dust attraction during measurements of sensitive components like silicon wafers or optical lenses.
Application Areas
Primary applications include production line quality control of machined parts, tool wear monitoring, and surface finish validation in injection molding. In the automotive industry, fixtures measure cylinder bore roughness with special internal expansion adapters. The electronics sector uses miniature fixtures for PCB copper trace analysis. Research institutions employ high-precision fixtures for material science studies, often integrating them with automated measurement systems. Recent growth in additive manufacturing has driven demand for fixtures capable of handling rough as-printed surfaces without damaging the probe.
Maintenance and Precautions
Regular maintenance involves cleaning contact surfaces with isopropyl alcohol to remove oil films, checking clamp alignment with dial indicators, and lubricating adjustment screws with light machine oil. Avoid using abrasive cleaners that could alter the fixture's reference surfaces. Critical precautions include never exceeding the maximum workpiece weight rating, as this can deform the fixture. When measuring magnetic materials, ensure any magnetic holders are properly demagnetized between uses to prevent particle accumulation affecting measurements.
B2B Procurement Guide
For bulk purchasing, verify OEM compatibility through test reports showing measurement repeatability with your specific roughness tester model. Request material certifications for fixtures used in regulated industries like medical devices. Consider lead times - custom fixtures for unique applications may require 6-8 weeks manufacturing. Total cost analysis should include potential productivity gains from faster sample loading versus basic fixtures. Some suppliers offer calibration services for high-end fixtures - factor this into long-term maintenance costs. For global operations, check if the design meets regional metrology standards like ISO 3274 or ASME B46.1.
Related Manufacturers
- 主营：三坐标测量机、金相显微镜、量具、粗糙度仪、轮廓仪、圆度仪、影像测量仪、二次元影像仪、光电自准直仪、薄膜测厚仪、激光粗糙度仪、圆柱度仪、二次元投影仪、表面粗糙度仪、三坐标测量仪、光学影像仪、三维扫描仪、关节臂测量仪、自准直仪、硬度计、金相切割机、磨抛机、三丰量具、马尔量具
- 主营：测量机、轮廓测量站、表面测量站、轮廓仪、测量仪、圆度仪、粗糙度仪、计量仪器、激光扫描仪、显微硬度计、齿轮测量中心
- 主营：马尔测针、马尔Mahr维修、三丰量具、轮廓仪卡盘、位置度检具、量具经销
- 主营：圆度仪、度仪标准、标准半球
- 主营：接触角测量仪、水滴角测试仪、动态接触角测量仪、静态接触角测量仪、全自动接触角测量仪、接触角测试仪、手持便携型接触角测量仪、大样品台接触角测量仪、光学接触角测量仪、非标接触角测量仪
- 主营：二次元测量仪、影像测量仪、龙门影像仪、2.5次元测量仪、光学影像仪、测量影像仪、三坐标测量机
- 主营：注射针测试仪、注射器测试仪、鲁尔圆锥接头性能综合测试仪、注射器药液推挤力测试仪、抓取钳传递系数测试仪、牙钻颈部强度测试仪、牙钻端侧刃切削试验仪、手术刀片弹性测试仪、牙钻径向跳动测试仪、手术刀片锋利度测试仪、牙科治疗机压头损失测试仪、缝合线线径测试仪、针尖刺穿力测试仪、锋利度测试仪、堵转扭矩测试仪、阴道扩张器挠度测试仪、输液器泄漏正负压测试仪、器身密合性测试仪、针管刚性测试仪、针尖锋利度测试仪、缝合针测试仪、鲁尔圆锥接头多功能测试仪、抓取钳锁合啮合力测试仪、导丝抗弯曲测试仪、牙科手机综合测试台
- 主营：强力机、织物强力机、拉力机、透气仪、日晒色牢度老化仪、透湿仪、儿童玩具测试仪、色牢度仪、防水性仪器、电磁静电类仪器、阻燃类仪器、织物缩水率、医用防护服、过滤效率检测、计数器传感器、医用口罩气体、恒温恒湿试验箱、恒温烘箱、耐磨起球
- 主营：夹具清洗机、pcba清洗机、钢网清洗机
- 主营：测试机、检验机、护目镜、仪测试、测验仪、耐磨仪、强力仪、检测仪、试验仪、测定仪、性测试仪、卫生巾、astmf2992、测定机、nbs橡胶、织物胀、卫生纸、老化箱、灼热丝、试验机、纸尿裤、能检验、呼吸气密、测试温度、口罩耳带
- 主营：数显水浴锅、动力粘度计、抗折试验机、试验仪、电动击实仪、湿度控制仪、承载比测定仪、混凝土抗渗仪、凝结时间测定仪、耐磨试验机、无侧限压力、反复弯曲试验机、恒温恒湿养护箱、沥青设备、混凝土设备、土工设备、粗粒土设备、建筑设备
- 主营：检测仪、测厚仪、壁厚仪、硬度计
- 主营：休止角测定仪、安息角测定仪、松装密度仪、振实密度仪、堆积密度测定仪、表观密度测定仪、压实密度仪、粉末电阻率测试仪、粉末流动性测试仪、粉体特性测试仪、堆密度仪、四探针测试仪、表面电阻率测试仪、体积电阻率测试仪、方阻仪、电压降测试仪、四探针电阻测试仪、方块电阻测试仪、颗粒强度测定仪、粉体综合特性测试仪、电阻率测试仪、粉体流动性测试仪、材料电阻率测试仪、霍尔流速计、方阻计
- 主营：养护箱、试验箱、集装箱、测定仪、试验仪器、试验机、养护室、混凝土、恒温恒湿、水泥压力、抗压一体机、移动式标准
- 主营：钢筋弯曲试验机、钢筋反复弯曲试验机、金属线材反复弯曲试验机、防水卷材不透水仪、胶粘剂拉拔试验仪、持粘性测定仪、抗静态荷载试验仪、压缩剪切夹具、砂浆拉拔试验仪、拉拔仪、框式拉拔试验仪、电子拉力试验机、微机控制电子万能试验机、低温试验箱、低温柔度一体机、多功能拉拔试验机、钢塑管弯曲试验机、48脚手架钢管弯曲试验机、砂浆拉力机、橡胶拉力机、冲片机、哑铃裁刀、直角撕裂裁刀、砂浆腻子多功能拉拔试验机
- 主营：折断力测试仪、密封性测试仪、密封强度测试仪、热封试验仪、瓶盖扭力仪、穿刺力测试仪、垂直轴偏差测试仪、瓶子底厚测厚仪、铝箔针孔度测试仪、剥离强度测试仪、玻璃瓶耐内压测试仪、玻璃瓶冲击试验仪、摩擦系数测试仪、片剂硬度测试仪、纸张白度仪、瓶子壁厚测厚仪、泄露测试仪、纸张白度测试仪、玻璃瓶内压测试仪、测试仪、测定仪、氧指数测定仪、水平垂直燃烧仪、拉力试验机、反压高温灭菌锅
- 主营：拉力试验机、定制化凝胶强度测试、实验室专用质构分析、二氧化碳气容量测试仪、揉搓试验仪、热封仪、密封仪、落镖冲击实验仪、热粘拉力试验仪、摩擦系数仪、扭矩仪、玻璃颗粒制备仪、泄漏与密封强度测试仪、撕裂度仪、摆锤冲击实验仪、安瓿瓶折断力测试仪、药用明胶全项目检测仪、强度弹性测试仪、导管摩擦系数测定仪、氯化铵强度仪、研发用颗粒强度仪、无菌器械密封测试仪、针刺穿测试仪、多功能针刺穿测试仪、注射针穿刺力测试
- 主营：芯片测试座、芯片老化座、芯片烧录座、芯片测试夹具、IC测试座、IC老化座、IC烧录座、芯片测试治具、定制IC测试座、功率器件测试座、模块测试座、BGA测试座、QFN烧录座、QFP老化座、SOP测试座、显卡芯片测试治具、SOT测试座、芯片测试socket
- 主营：包装密封仪、热封仪、玻璃瓶壁测厚仪、瓶盖扭力仪、初粘 持粘性测试仪、纸杯杯身挺度仪、纸张厚度测试仪、微生物密封仪 正负压一体、摩擦系数测定仪、密封试验仪、包装密封检测仪、拉力试验机、压缩试验机