Torque Wrench Test Machine
1.1 General Safety Guidelines
Warning:
Failure to comply with these guidelines may result in danger to personnel or damage to the equipment.
1.1.1 Do not touch any switches with wet hands to avoid electric shock. Parts like the electrical cabinet door are marked with lightning symbols, indicating the presence of high-voltage electrical components. Operators should exercise extreme caution when approaching or opening these areas for maintenance to prevent electric shock.
1.1.2 Be thoroughly familiar with the location of the emergency stop button. The control panel is equipped with a red mushroom-shaped emergency stop button. In the event of an accident or other emergency, promptly press this button to cut off the power supply. This will stop the equipment immediately, preventing further damage.
1.1.3 Carefully read the user manual and electrical schematics to understand the functions and operation methods of all controls.
1.1.4 Do not press operation buttons or travel switches arbitrarily. Do not adjust the position of limit switches without consulting the manufacturer. Avoid loosening or disassembling components without authorization to prevent affecting equipment accuracy.
1.1.5 Avoid opening the electrical cabinet door unnecessarily or altering preset controller parameters. If changes are required, they should be performed by trained and manufacturer-authorized professionals, and the original parameter values must be recorded for restoration if needed.
1.1.6 In the event of a sudden power outage, immediately turn off the electrical cabinet switch.
1.1.7 Do not touch live electrical components inside the electrical cabinet when the equipment is powered on.
Warning:
Avoid contact with high-voltage areas inside the electrical cabinet (marked with lightning symbols). High-voltage components can cause severe electric shock, and terminals may also pose an electrocution risk.
1.2 Safety Before Power-On
1.2.1 The cables connecting the workshop power supply and the equipment must be adequately long, protected with a sheath, firmly grounded, and safeguarded against potential damage.
1.2.2 Ensure the equipment's power voltage, current, and switch capacity meet the required specifications. The input power supply is a single-phase three-wire system (live, neutral, and ground), with a voltage of 220V/50Hz, full-load current of 3A, and grounding resistance less than 4Ω. If the user's power grid voltage is insufficient, a voltage stabilizer is recommended to prevent long-term electrical damage.
1.2.3 During operation and after work, keep the doors or covers of electrical devices closed to prevent the ingress of water, dust, or harmful gases into the CNC unit, operation box, or power control board.
1.2.4 Check for debris on the equipment. Ensure no loosened or detached pipes or wires. Clear all obstructions and verify that the equipment is in standby mode and safe before powering on.
1.2.5 Follow the requirements in the corresponding sections of the instruction manual to prepare the equipment for power-on.
1.2.6 Power on sequentially: first turn on the workshop power switch, then the main circuit air switch, and finally the controller switch.
1.3 Safety Checks During Startup
Warning:
Before powering on the machine, ensure the workshop power lines are grounded. Ungrounded lines can damage the electrical equipment.
1.3.1 After switching on the controller, check the indicator lights on all drive devices to ensure their status is correct.
1.3.2 Verify whether the software shows any alarm indications.
1.3.3 Listen for any abnormal noises from motors or other moving parts.
1.3.4 Ensure the rotation direction of all motors is correct.
1.4 Safety During Operation
1.4.1 Use the appropriate fixtures for clamping samples to avoid damaging the equipment.
1.4.2 Always secure the protective cover during operation to prevent harm to personnel.
1.5 Safety After Testing
1.5.1 After testing, remove the load from the force sensor to leave it in a stress-free state.
1.5.2 Shut down the system in sequence: turn off the computer, the controller's power switch, the main circuit switch, and finally the workshop power switch.
1.5.3 Apply dust protection measures.
1.6 Safety During Maintenance
1.6.1 Electrical and mechanical maintenance must be performed by trained professionals.
1.6.2 Maintenance under powered conditions can be dangerous. Ideally, shut off the main circuit switch during maintenance.
1.6.3 Do not alter the positions of limit switches or proximity switches.
Warning:
After power-off, wait for at least 5 minutes before touching terminals, as high voltage may remain on power line terminals for some time. To avoid electric shock, do not touch immediately.
Table of Contents
Product Functions
Main Features
Manufacturing Standards
Main Equipment Parameters
Structure and Working Principles
Operating Conditions
Product Acceptance, Handling, and Storage
Installation and Commissioning
Testing
Maintenance and Servicing
Appendices:
Appendix 1: Built-in Controller Interconnection Diagram
Appendix 2: Control Circuit Schematic
1. Product Functions
The NKNJY-2000 Torque Wrench Tester is a specialized device for verifying torque wrenches and torque screwdrivers. It is primarily used to test various types of torque wrenches, including fixed-force torque wrenches, digital torque wrenches, preset torque wrenches, torque screwdrivers, screwdrivers, and other instruments and products related to tightening forces. This series of testing machines is suitable for metallurgy, building materials, research institutions, quality inspection units, and other organizations for production testing, development, and research of products and materials.
2. Key Features
High Accuracy and Resolution: Fast sampling speed and computer display.
High-Precision Torque Sensor: Usable for both clockwise and counterclockwise directions.
Peak Hold Function: Computer displays include peak retention.
Dual Modes: Seamless switching between real-time and peak modes.
Real-Time Display: Includes curve plotting functionality.
Set Upper and Lower Limits: Overload alert feature.
Data Storage: Capable of storing peak data, which can be viewed or exported via a USB drive.
Customizable Identification: Allows assigning specific IDs for torque wrenches.
3. Manufacturing Standards
The technical requirements and key performance indicators comply with or meet the following current valid standards:
GB/T 2611 "General Technical Requirements for Testing Machines"
JJG 707-2014 "Verification Regulation of Torque Wrenches"
4. Main Specifications
Maximum Torque: 2000 N·m
Measurement Range: 5–2000 N·m
Relative Indication Error of Torque: Better than ±1% of the indicated value.
Torque Measurement Indication Error: Better than ±1% of the indicated value.
Torque Resolution: 0.1 N·m
Maximum Displacement: 245 mm
Relative Indication Error of Displacement: Better than ±1% of the indicated value.
Displacement Resolution: 0.001 mm
Movement Speed: 0.1–200 mm/min, infinitely adjustable.
Control Method: Computer-controlled.
Wrench Testing Direction: Forward and reverse.
Power Supply Voltage: 220V, 50Hz.
5. Main Structure and Working Principle
The torque wrench tester is a mechatronic product comprising the following main parts:
Main Unit:
Consists of a driving assembly, specimen fixture assembly, working table assembly, and sheet-metal enclosure with protective components.
The main unit has a horizontal steel structure with a one-time molded steel plate ensuring high rigidity.
The left side is designated for spatial adjustments and specimen clamping, while the right side executes device operations.
The fixture assembly is adjustable to accommodate torque wrenches with varying lever arms. Different square connectors are used for various wrenches, and a servo motor drives a ball screw to apply force. This ensures uniform torque application with continuous speed adjustment and smooth loading during the test.
Measurement and Control System:
This system collects and measures signals such as torque, displacement, and deformation and controls actuator components like servo motors to achieve automatic test control.
Key components include an integrated control card, high-power circuit board, external handheld control box, and operation button panel.
Sensors located beneath the main unit provide test force signals.
Computer Data Processing System:
This system uses a computer to create test programs, monitor test progress, and process results.
It mainly consists of a computer and dedicated testing machine software, closely integrated with the measurement and control system. Detailed operation instructions are provided in the software manual.
4. Main Equipment Parameters
Maximum Torque: 2000 N·m
Measurement Range: 5–2000 N·m
Relative Error of Torque Displayed Value: Better than ±1%
Torque Measurement Display Error: Better than ±1%
Torque Resolution: 0.1 N·m
Maximum Displacement: 245 mm
Relative Error of Displacement Displayed Value: Better than ±1%
Displacement Resolution: 0.001 mm
Movement Speed: 0.1–200 mm/min, adjustable without steps
Control Method: Computer-controlled
Wrench Testing Torsion Direction: Clockwise and counterclockwise
Power Supply Voltage: 220V 50Hz
5. Main Structure and Working Principle
The torque wrench testing device is a mechatronic product composed of the following components:
Main Unit
Measurement and Control System
Computer Data Processing System
Test Result Output Section
Main Unit
The main unit consists of:
Drive Assembly
Specimen Fixture Assembly
Workbench Assembly
Sheet Metal Protective Housing Assembly
The main unit adopts a horizontal steel plate structure, shaped in one process to ensure high overall rigidity.
Left Section: Space adjustment and specimen clamping components.
Right Section: Execution components of the equipment's motion.
By moving the specimen fixture assembly, the device accommodates torque wrenches of varying arm lengths. Replaceable square connectors adapt to different wrench specifications. A servo motor drives the ball screw to apply force, ensuring uniform torque application and smooth, continuously adjustable speeds throughout the testing process.
Measurement and Control System
This system collects and measures signals such as torque, displacement, and deformation while controlling servo motors and other actuators to automate the testing process.
Key components:
Embedded Control Card: Proprietary system with a resolution of up to 1/500,000 (500,000 codes).
Power Circuit Board: Includes protection against phase loss, overvoltage, and overcurrent.
External Handheld Control Box and Operation Button Panel: For operational adjustments.
Sensors located beneath the main unit provide test force signals.
3. Computer Data Processing System
The system uses a computer to:
Edit test plans.
Monitor the testing process.
Process and output results.
It consists of a computer and specialized testing software closely integrated with the measurement and control system. For detailed instructions, refer to the software user manual.
4. Test Result Output Section
This section displays, prints, and uploads test results for analysis and storage.
6. Operating Conditions of the Testing Machine
Temperature: 10–35°C, with fluctuations ≤2°C/h.
Relative Humidity: ≤80%.
Power Supply Voltage Fluctuation: Within ±10% of the rated voltage.
Power Supply: 220V, 50Hz, single-phase, 1 kW.
Environmental Requirements: No significant electromagnetic interference.
Surroundings: No vibration or corrosive substances.
Space Requirement: Leave at least 0.7 m around the device; maintain a clean, dust-free environment.
Installation: Must be on a stable foundation with a leveling tolerance of 0.2/1000.
7. Product Receipt, Transport, and Storage
Product Receipt
Verify the item count against the delivery note and ensure the packaging is undamaged.
If damage or anomalies are detected, contact the shipper using the details on the delivery note for further instructions.
Transport and Storage
Move the equipment to the testing laboratory promptly to prevent damage from exposure to high temperatures or rain.
Users are responsible for damage caused by prolonged outdoor storage.
Lifting operations must be carried out by qualified personnel following safety protocols.
8. Product Installation and Commissioning
1. Positioning the Equipment
Transport the equipment to the installation area and unpack it, checking against the packing list.
Prepare lifting tools suitable for the equipment's weight.
Hoist the equipment to the foundation and adjust its position according to the lifting diagram.
After positioning the main unit, use a frame level on the workbench surface to ensure the unit is level.
Lifting Diagram
(Refer to the provided diagram for detailed instructions.)
If further assistance or additional translations are required, feel free to ask!
Note:
When using a forklift to move the main unit, ensure the forks are inserted into the designated area of the main unit and widen the spacing between the forks as much as possible.
Protect all components and the painted surface of the main unit during transport.
2.2 Equipment Control Cable Connection
Refer to Figure 2 or Figure 3. Match the connection cables to their respective ports based on the labels and fasten securely.
2.3 Power Connection and Debugging
Connect the provided cable to the pre-installed circuit breaker at the site.
After powering the device:
Open the software.
Turn on the main power switch and the power button.
Test by clicking Forward or Reverse to verify proper operation and direction.
When manually moving the wrench connection, ensure there is a change in torque value.
9. Testing Procedure
1. Test Setup
Select the appropriate fixture for the wrench.
Connect the wrench to the test bench as shown in Figure 1. Position the test as far from the operating direction as possible to ensure accurate force measurement.
2.1 Select Test Standard
On the Test Selection Interface, choose the test type on the left.
Select the specific test on the right.
2.2 Create a New Test
After entering the test, click the New Test button on the toolbar.
In the pop-up New Record window, input relevant information, such as test group number, test quantity, and test shape.
Customize the interface to Standard Mode or Advanced Mode, or manage templates.
Confirm the input and click OK to create the test group.
Template Management:
Templates can be switched, saved, created, or deleted (default templates cannot be deleted).
Group parameter fields can be freely edited in terms of quantity and content.
2.3 Test Process
2.3.1 Test Steps
After preparation, clear the torque and displacement values.
Click the Test button on the control panel.
Follow preloading settings to enter the Preloading Phase.
Once preloading conditions are met, proceed to the Loading Phase.
During loading, observe the curve, channel display values, and step progress. If abnormalities occur, press the Stop button to terminate the test.
2.3.2 Test Completion
Normally, the test ends automatically when the specified conditions are met, saving the data and calculating results.
If forced to stop manually, choose whether to save the data. Ensure reasonable end conditions are set; otherwise, the test may not conclude automatically.
3. Repeat Tests
Repeat the above steps for subsequent tests.
4. Save Results
After completing a test, the program automatically analyzes and saves the test curve and results.
5. Data Analysis
At the end of the test, the system automatically analyzes the test curve, marking key points on the force-deformation graph. Results are displayed on the Data Board.
If automated analysis does not meet requirements, manual analysis or batch analysis after all tests can be performed.
6. Report Printing
Click the Print Icon on the Data Board to open the report printing window.
Select a suitable template and click the Print button.
Typical Test Reports:
Include data and curves.
Decide whether to print curves and specify the type (e.g., force-deformation, stress-strain, force-time, force-displacement, or deformation-time).
10. Product Maintenance and Care
10.1 Main Unit Maintenance
Maintain good operational habits and follow procedures.
After each test session, clean rust particles and debris, store tools, and apply rust prevention as needed.
Regularly lubricate all parts.
Monitor abnormal conditions (e.g., noise or vibration from the gearbox) and address promptly. Contact customer service for further assistance.
Schedule regular inspections and calibrations.
10.2 Computer Maintenance
Use the computer and software exclusively for testing. Seek administrator approval before installing additional applications.
Regularly back up test data, reports, and plans to prevent data loss.
Install antivirus software to protect against malware.
10.3 Measurement and Control System Maintenance
Inspect controller connections and tighten loose cables.
Power down the closed-loop control system and computer if unused for extended periods.
Verify all lights, buttons, and fixtures are functioning correctly.
Contact customer service for unresolved issues.
Attached Figures:
Figure 1: Internal Controller Connection Diagram.
Refer to the software user manual for more details.
NKHJY-2000
Torque Wrench Testing Instrument
Certificate of Conformity
Product Name: Torque Wrench Testing Instrument
Model Specification: NKNJY
Accuracy Level: Grade 1
Product Number:
This testing machine has passed inspection and is approved for shipment.
Inspector:
Inspection Date:
NKHJY-2000
Torque Wrench Testing Instrument
Packing List
|
No. |
Item |
Quantity |
Unit |
|
1 |
Main Unit |
1 |
Unit |
|
2 |
Measurement and Control System |
1 |
Set |
|
3 |
Computer |
1 |
Unit |
|
4 |
Torque Sensors |
3 |
Pieces |
|
5 |
Hand-Control Button Box |
1 |
Piece |
|
6 |
Test Fixtures |
1 |
Set |
|
7 |
Certificate of Conformity |
1 |
Copy |
|
8 |
Packing List |
1 |
Copy |
|
9 |
User Manual |
1 |
Copy |
Note: Ensure quantities are verified during packing.
Hot Tags: torque wrench test machine, China torque wrench test machine manufacturers, suppliers, Digital Torsion Testing Machine, Fastener Torsion Testing Machine, Metal Material Testing Machine, Torsion Testing Machine
You Might Also Like
Send Inquiry