Product Description

Equipment Solution

M12-M36 high strength bolt tightening axial force torque coefficient tester

Appearance of the whole machine (for reference only)

Product name: M12-M36 high-strength bolt tightening axial force and torque coefficient tester

Product model: NCW-8000SE

Main features and scope of use:

This test system is designed according to the user’s test requirements. It is mainly used for the detection of large-scale high-strength bolt connection pairs such as wind energy equipment. It is used for static torsion testing of high-strength bolts and meets the requirements of GB1231-2006 “High-strength large hexagonal head bolts and large bolts for steel structures”. “Technical Conditions for Hexagonal Nuts and Washers” and the requirements of GBT_32076.8-2017. The test system mainly consists of a host machine, a testing mechanism, a loading mechanism, a system, a control data acquisition system, a computer and its testing software, and other necessary loading brackets and accessories. . It is a high-performance ideal testing equipment for factories and mines, quality inspection units, scientific research units, and universities. It is suitable for torsion-tensile mechanical performance testing of high-strength bolts and large hexagonal head bolts. It can detect the torque, rotation angle and axial force of bolt and nut pre-tightening. It can detect the torque coefficient of large-sized and high-strength bolt connection pairs and automatically display it. and data storage and output. For torsion-shear type high-strength bolts, the bolt torsion axial force and its average value, standard deviation and coefficient of variation can be detected. The detector will automatically record the test data, and automatically calculate the average axial force, average torque, average torque coefficient, standard deviation and coefficient of variation of the sample through a microcomputer. Technical indicators such as the relationship between torque coefficient, torque-axial force, and rotation angle, and curves such as torque-axial force-torque coefficient.

lUsers can also provide relevant technical standards, such as ISO, ASTM, DIN, and JIS, to implement control of test methods and related data collection and processing according to the standards provided by users.

lThis machine is designed and manufactured according to the test requirements of GB/T32076.8-2017.

Main Technical Parameter:

4.1 Host part

4.1.1Maximum torque: 8000Nm

4.1.2 Effective torque measurement range: 500~8000Nm

4.1.3 Axial force measurement range: 30-1000kN

4.1.4 Maximum speed: 1r/min聽(0.5-5 RPM variable )

4.1.5 Testing machine torsional error and repeatability error: 1%

4.2 Axial loading part

4.2.1 Maximum axial bolt axial force: 1000kN

4.2.2 Effective measurement range of bolt axial force: 30-1000 kN

4.2.3 Testing machine axial force tolerance and repeatable error: 1%

4.3 Twist angle part

4.3.1 Torsion angle measurement range: (1~9999)掳

4.3.2 Tolerance of rotation angle measurement value: 1%

4.3.3 Test angle accuracy 鈮ぢ?.1掳

4.4 The tolerance for elongation measurement is: 卤1/100mm.

4.5 Bolt specifications: Large hexagon/torsion shear bolt BS-EN 14399

M12/M16/M20/M22/M24/M27/M30/M33/M36

Length range: 50-350mm聽(the shortest length for large hexagonal M16 is 40 mm, the shortest length for M20 is 45 mm, the shortest length for 22 mm is 50 mm, and the shortest length for twist shear type M16 is 45 mm)

4.6 Power supply voltage:聽聽380V 聽50hz 聽3P 聽or customzied 415V 聽50Hz聽聽3 Phases

4.7 Control mode: microcomputer control.

4.8 The system has protection functions such as overload and specimen breakage.

4.9 The computer screen displays real-time values of various test parameters and related curves.

4.10 The printer prints test reports and curves.

Main Configuration:

No. Item Qty Remark

1 Main workbench, frame 1

Torsion test device 1

Axial bolt axial force testing device 1

Bolt axial overall deformation device 1

2 Test tooling 1

3 Load speed control system 1

4 High-precision symmetrical torque sensor 1

5 High-precision bolt axial force sensor 1

6 High-precision angle collection 1 Inner install

7 Low speed and high torque reducer 1

8 Control System 1

9 Electrical control and data acquisition system 1

10 software 1

11 printer 1

12 computer 1

13 Linear Guides 1

14 Bolt torsion attachment 1

15 protecting mask 1

16 Random data 1 Manual, certificate, packing list

17 big hexagon

Special accessories 聽 1Group M12/M16/M20/M22/M24/M27/M30/M33/M36聽Test accessories

18 Torsional shear test聽fixtures 聽 1 M12/M16/M20/M22/M24/M27/M30 /M33/M36

Main Description:

6.1 Host: The host has a platform structure, and all loading devices are installed on the platform. The host has high enough rigidity to ensure the accuracy of test data.

6.1.1 A deceleration loading mechanism composed of a motor and a low-speed and high-torque planetary gear reduction device is installed on the platform.

6.1.2 The other end of the platform is equipped with a rigidly fixed torsion mechanism. This mechanism can move along the linear guide rail on the flat plate and is suitable for testing and installation of high-strength bolts of different lengths.

6.1.3 The low-speed torque drive device consists of a motor and a cycloidal pinwheel reduction mechanism. Its output end is equipped with a high-precision torque sensor and a bolt axial force sensor to ensure the accuracy of the data.

6.1.4 Wear safety protection devices such as protective covers. It has protection or automatic shutdown functions such as overload, sample breakage, and test end.

6.1.5 As needed, key components are mainly processed through CNC machine tools, machining centers and other precision machine tools as the main equipment, ensuring the processing accuracy and assembly accuracy requirements.

6.1.6 Testing equipment

In addition to using general measuring tools for testing equipment, more advanced testing instruments are used to detect key technical components.

6.2 Control and data acquisition system:

The digital acquisition system configuration includes torque, bolt axial force, rotation, and other loop channels. In the axial direction, the bolt axial force of high-strength bolts during the test can be measured, and at the same time, the torque and rotation angle of high-strength bolts can be measured. , the torsion coefficient can be calculated through the data processing system.

By controlling the entire test process, the data acquisition system installed in the computer collects test data. The computer screen displays the test torque, bolt axial force, and torque coefficient in real time. In addition, the system’s test parameter file system makes it easy to upgrade.

6.3 Computer and test software:

The computer screen displays the test data and draws the torque-bolt axial force, angle-bolt axial force, torque coefficient-time test curves. The computer automatically processes the data according to the standards and prints the test report.

6.4 Torsion mechanism:

The torsion mechanism is a special torsion mechanism specially designed and produced for bolts. This mechanism includes two parts: torsion and axial tension, and the torsion and axial tension test data can be tested from the testing device connected to the torsion mechanism. In addition, the rotation and elongation can also be measured simultaneously through a special device. . During the test, the bolt is installed on the attachment of the mechanism, and the force is transmitted to the bolt through the connector by controlling the low-speed and high-torque reducer connected to the motor. The nut moves in the tightening direction through the rotation of the bolt. While twisting, the axial tensile force is transmitted to the pressure measuring end face of the bolt axial force sensor, so that the torque and axial bolt axial force can be measured while completing the test.

7. Data collection and display system:

It mainly completes the