Roughness measuring machine features and technical indicators

Roughness meter introduction

Moulds are called "the mother of industry" and are mainly used for efficient and mass production of related parts in industrial products. With the development of modern industry, molds have been widely used in automobiles, home appliances, consumer electronics, instrumentation, aerospace and medical equipment and other products, of which about 60%-80% of parts and components need to be processed by molds.

The core part of the mold is the mold core, and the shape of the mold core is mostly curved. Its contour, roughness, dimensional accuracy, etc. have an important impact on the final part size, finish, and even the injection molding process, so it is very important to accurately measure the mold.

Roughness profilometers are the most economical and efficient way to measure core surfaces.

Features of SJ5701 profilometer surface roughness

1. Powerful hardware support

① Integrated measurement of contour shape and surface roughness---share the main body, switch between different modules, can measure the contour shape and roughness of the same surface, or use an optional module, which can analyze the contour shape and roughness at the same time in one measurement;

② High precision, high reliability and high repeatability---using high-precision grating system as the measurement benchmark; grinding guide rail as the guiding system; linear motor as the driving system;

③ Automatically adjust the force measuring system---using the voice coil motor force measuring system, the measuring force can be adjusted from 10-150mN, and the resolution can reach 0.2mN;

④Intelligent protection system---the instrument has protection in all directions, which can effectively reduce the damage caused by personnel operating errors;

2. Professional measurement and analysis software

① Simple and easy-to-use measurement annotations---various contour measurement annotations to meet measurement needs; various roughness evaluation standards can be switched at will.

② Powerful software management and analysis---in line with Chinese habits, using centralized management data, simplifying personnel operations, intelligent analysis and recording;

③ Comparison of theoretical drawings and physical measurements --- CAD drawings can be imported into the measurement records, and the theoretical features and dimensions can be compared and analyzed with the actual measurement results;

④ CNC function and statistical analysis---can realize batch measurement of the same type of parts in the same batch, and has the function of SPC statistical analysis.

Main technical indicators of SJ5701 surface roughness meter

1. Roughness measurement:

Measuring range: X axis: 200mm, Z1 axis: ±80µm, ±40µm, ±20µm

Straightness error: ≤0.15µm/20mm, ≤0.5µm/200mm

Indication error: ±5%

Resolution: Z1 axis 0.004µm(±80µm), 0.002µm(±40µm), 0.001µm(±20µm)

Measuring speed: 0.5mm/s, 0.1mm/s, 0.05mm/s adjustable

2. Profile measurement:

(1) X-axis

Measuring range: 0～200mm;

Indication error: ±(0.8+2L/100)μm, where L is the horizontal measurement length, unit: mm;

Resolution: 0.01μm;

Straightness: 2μm/200mm;

Measuring speed: 0.1～5mm/s;

Moving speed: 0～30mm/s.

(2) Sensor Z1 axis:

Measuring range: ±25mm;

Indication error: ±(1.6+|2H|/100)μm, where H is the vertical measurement height, unit: mm;

Resolution: 0.01μm;

(3) Z axis:

Measuring range: 0～450mm;

Moving speed: 0～30mm/s;

(4) Measuring force: 10～150mN;

(5) Climbing ability: uphill 77º, downhill 83º;

Optional module - one measurement of profile roughness:

Measuring range: X axis: 200mm, Z1 axis: 800µm

Straightness error: ≤0.15µm/20mm, ≤0.5µm/200mm

Indication error: ±5%

Resolution: Z1 axis 0.001µm

Stylus: 2μm, diamond, 90°

Measuring force: <1mN

Difference and connection between profiler and roughness meter

The words profilometer and roughness meter often appear together, so are they the same product? In fact, both the profiler and the roughness tester are surface topography measuring instruments, but the profiler and the roughness tester are not the same product.

First of all, the functions of the two are different: the profilometer is an instrument for testing and inspecting the contour, two-dimensional size and two-dimensional displacement of an object. As a precision measuring instrument, it is widely used in the automobile manufacturing and railway industries. It is mainly used to measure the contour shape of the surface of the part, which reflects the macro contour of the part, such as: groove depth, groove width, chamfering (including chamfering position, chamfering size, angle, etc.) of grooves in automobile parts ), the straightness of the cylindrical surface element line and other parameters. In short, the profiler reflects the macro profile of the part.

Roughness meter is also called surface roughness meter, surface finish meter, surface roughness detector, roughness measuring instrument, roughness tester and other names. It is mainly to measure the surface processing quality of the grinding/finishing process of the surface of the part. In layman's terms, it means that the surface of the part is not polished (the old national standard for roughness is called smoothness), that is, the roughness reflects the microscopic condition of the machined surface of the part.

Although the profiler and the roughness meter are not the same product, they are closely related. Very arrogant, many brands of measuring instruments have produced a roughness and contour all-in-one machine on this basis, that is, a roughness measuring module is installed on the profilometer, which can measure both the contour size and the roughness. The German Jenoptik JENOPTIK Group Huo HOMMEL's roughness profile measuring system is one of the most typical representatives.