Length Measuring Machine and Length Measuring Instrument

Zhongtu Instrument SJ5100 Series Length Measuring Machine and Length Measuring Instrumentoffers advantages such as high precision, high speed, and non-contact measurement. It utilizes the interference effect of gratings to convert optical signals into electrical signals via a photoelectric detector, and calculates the dimensions of the measured object through computation. Widely applied in fields such as mechanical processing, electronic manufacturing, and semiconductor production, it is commonly used for precise measurement of parameters like object length, angle, and position in industrial production. Its measurement accuracy typically reaches the sub-micron level, meeting the dimensional precision requirements of most industrial production processes.

Product Description

The SJ5100 Series Length Measuring Machine and Length Measuring Instrument employs imported high-precision grating measurement systems, high-precision ground linear guides, high-accuracy temperature compensation systems, bidirectional constant measuring force systems, and high-performance computer control system technology to achieve high-precision measurement of various length parameters. The high-precision ground guide ensures high stability and ultra-high straightness during the movement of the measuring head seat. The imported high-precision grating measurement system records coordinates in the length direction, and the computer synthesizes data by correcting grating data with feedback from the force measurement device, temperature sensors, and Abbe error data (due to the high straightness of the guide, instrument errors caused by Abbe correction are minimal). Analysis is conducted according to the relevant definitions and formulas of the measured object's parameters to calculate the relevant length parameters.

After the operator installs the measured object, selects the standard for the measured object in the detection software, and inputs the specification parameters of the measured object, the head seat is moved to contact the measured object. The five-axis worktable is adjusted to find the inflection point, and sampling is completed to obtain measurement data. The system can display measurement results in real time, automatically calculate various parameters of the measured object (e.g., automatically calculating the pitch diameter when inspecting thread gauges), and perform pass/fail judgments based on the system's built-in standard database. The entire measurement process takes no more than 3 minutes, after which results and record reports are automatically generated.

Main Functions of the Instrument

1. Standard Functions:

Gauge Blocks & Block Gauges: (0.1~300mm);

Smooth Ring Gauges: φ5~φ200mm (wall thickness ≤50 mm, height ≤50mm); Smooth Plug Gauges: φ1~φ220mm;

Thread Ring Gauges: M5~M200 (pitch 0.8~4mm);

Thread Plug Gauges: M1~M220 (pitch 0.25~5.5mm);

Smooth Calipers: Internal calipers 5~200mm, external calipers 1~300mm;

Micrometer Calibration Rods: 25~300mm;

Feeler Gauges: 0.02~1mm;

Pin Gauges: φ0.1~φ10mm;

Three-Wire Thread Measuring Wires: 0.118~6.585mm;

Two-Point Internal Micrometers: 25~300mm;

2. Optional Functions:

Small Smooth Ring Gauges: φ0.8~φ5mm;

Thread Ring Gauges: Specifications M3~M4 (pitch 0.5~0.7mm);

Smooth Taper Ring Gauges: φ5~φ200mm (thickness ≤50mm);

Smooth Taper Plug Gauges: φ5~φ60mm (length 10~100mm); φ60~φ200mm (length ≤50mm);

Thread Taper Ring Gauges: M5~M200mm (thickness ≤50mm);

Thread Taper Plug Gauges: M5~M60mm (length 10~100mm); M60~M200mm (length ≤50mm);

Buttress Threads, Trapezoidal Threads: M3~M400 (pitch 0.5~6mm);

Spline Ring/Plug Gauges & Standard Gears (Span Measurement): Internal φ10~φ200mm, external φ5~φ200mm, module 0.8~6mm;

Manual Calibration of External Micrometer Indication Error: 25~300mm;

Manual Calibration of Digital and Vernier Caliper Indication Error: 75~300mm;

Manual Calibration of Depth Micrometer Indication Error: 0~25, 25~50, 50~75mm;

Manual Calibration of Three-Jaw Internal Micrometers: φ6~φ200mm;

Dial Indicators (Manual Calibration of Dial Indicators, Micrometer Heads, Lever Dial Indicators);

Manual Calibration of Digital Radius Gauges: R5~R700mm;

Measurement of Bearing Inner/Outer Ring Taper, Groove Bottom Diameter Inner/Outer Diameter and Groove Width, Length Dimensions of Precision Components, Inner/Outer Diameter Dimensions;

Main Technical Specifications

Performance Features

1. Full-Range Direct Measurement:

The SJ5100 Series Length Measuring Machine and Length Measuring Instrument uses imported high-precision long glass grating scales for length direction positioning, enabling high-precision full-range direct measurement.

2. High Precision and High Stability:

1) High-precision grating measurement system with resolution up to 0.01μm, ensuring high measurement accuracy;

2) Precision ground guide system with high straightness and wear-resistant material, ensuring high precision, stability, and reliability;

3) Imported special material high-rigidity, non-deforming measuring rods ensure high-precision and true data acquisition;

4) Marble base with optimized instrument base structure through finite element analysis ensures decades of stability without deformation. The high-rigidity marble base structure minimizes deformation during head seat and worktable movement, reduces external vibration interference, and ensures long-term stability and reliability;

5) Compact friction drive structure with low moving friction force ensures stability during head seat movement.

3. Bidirectional Constant Measuring Force:

1) Special sensor bidirectional constant measuring force system reduces the impact of measuring force on results, ensuring high system measurement accuracy;

2) Wide-range continuous adjustment of measuring force;

3) Non-weight loading; the measuring force sensor principle avoids errors caused by non-level instrument tables and environmental vibrations.