Today’s industry does not only verify if a part has the required dimensions. Surface roughness and profile play a role in determining how well a part performs. The use of surface roughness measuring machines in conjunction with profile measurement provides a more holistic approach to the evaluation of product quality.
The combination of these two inspection methods is important in case of precise machining of parts, when the surface texture and profile are specified.
What Does Surface Roughness Measurement Tell Manufacturers?
The surface roughness testing process will determine the microscopic irregularities that are on the manufactured surface. Such irregularities can arise due to machining, grinding, polishing, or any other manufacturing operation.
A surface roughness tester can be used by manufacturers to determine if the surface that is finished meets the desired requirements before the component goes through the next manufacturing step.
This testing process can assist in determining:
- Surface finish
- Component uniformity
- Impact of machining operations
- Quality problems
- Applicability of the component in assembling or functional application.
Proper surface finish is very crucial for components which experience wear, friction, sealing, or sliding motion.
Explore our complete range of precision metrology solutions on the All Products page to find the right system for surface roughness and profile measurement applications.
Why Is Profile Measurement Equally Important?
Surface roughness refers to the texture of the surface, whereas the profile measurement process analyzes the geometric structure of the component. A part may exhibit satisfactory surface finish but still be unsatisfactory because it does not meet the specified geometric requirement.
The profile measuring instrument is capable of analyzing various features such as:
- Contours and profiles
- Angles
- Curvatures and radii
- Heights of steps
- Form characteristics
This analysis allows the manufacturers to gain a better perspective regarding the quality of the components.
How Do Roughness and Profile Measurements Work Together?
The inspections for roughness and profile address various quality control needs. The former determines whether the surface finish meets the specifications, whereas the latter determines if the component is geometrically shaped as per its intended design.
The benefits of a combined inspection process for manufacturers include:
- Confirmation of surface finish specifications.
- Determining accuracy of profile and contour.
- Detection of any machining errors.
- Minimizing the need for repetitive setups for inspection processes.
- Enhancing uniformity between production runs.
Which Industries Need Both Measurements?
There are industrial processes that use the manufacture of parts with very stringent requirements for dimension and surface. They include:
- Automotive parts
- Gears and shafts
- Bearings
- Machined parts
- Tool parts
- Engineering parts
In all these cases, the surface condition and geometry accuracy will affect the performance of the part after assembly.
What Should You Look for in a Measuring Machine?
The choice of inspection machines depends on many criteria such as the type of components to be measured, tolerances, measurement ranges, and production volumes.
Among them are:
- Ability to measure roughness
- Profiling or contouring ability
- Accuracy and repeatability of measurements
- Choice of probe assembly
- Control of axes’ movements
- Measurement software
- Reporting and data analysis capabilities
Inspection machine which will meet both criteria will eliminate the necessity of separate measuring process.
Why Is the TASO LK100C a Practical Solution?
The TASO Metrology LK100C Surface Roughness and Profile Measuring Machine was developed to be able to conduct surface roughness and profile measurement through one measuring machine. Such technology can be advantageous for manufacturers who wish to measure surface and profile features without having to perform separate inspections.
The equipment can be used in the production of automobile parts, bearings, gears, and machined parts.
Manufacturers who wish to enhance their quality control systems may benefit from the combination of roughness and profile measurement technologies.
Conclusion
Both surface roughness and profile measurements are required by manufacturers since they measure different characteristics of parts. A surface roughness tester is used to measure the texture of surfaces, while profile measurement ensures that the necessary geometry is achieved.
This way, manufacturers will be able to ensure that they make good decisions when dealing with precision machined parts.
FAQs
1. What is a surface roughness measuring machine?
Surface roughness measuring machines test for surface irregularity and check if a part has met the required surface finish specification.
2. What is a profile measuring machine?
Profile measuring machines test the shape and contour of a part, including aspects like radius, angle, step, and profile.
3. Why do we need roughness and profile measuring machines?
Because they measure different parameters. Roughness testing checks for surface finish whereas profile checking measures geometric accuracy.
4. Is there a machine which can measure surface roughness and profile?
Yes. There are modern machines which have been designed to measure roughness and profile simultaneously, for instance, the TASO LK100C.
5. Where are roughness and profile measuring machines used?
Roughness and profile measurement is required by automotive, bearing, gear, precision machining, tooling, and engineering industries among others.
6. Does surface roughness affect part performance?
Yes. The surface finish affects things like friction, wear, sealing, lubrication, and fit when the parts are in motion.