Installation training for metal rubber plastic high and low temperature universal testing machine

1Installation training for metal rubber plastic high and low temperature universal testing machinePreface

Thank you very much for choosing the WDW series electronic universal testing machine. This product is a new generation microcomputer controlled electronic universal testing machine developed by our company based on the reference and adoption of technology. Before use, please read this manual carefully and fully understand it before turning it on for use,

This manual is the overall user manual and must be used in conjunction with the software user manual.

Our company reserves the right to modify all contents of this manual.

Keeping the testing machine you purchased in good operating condition also requires your careful maintenance.

2、 Overview

1.Installation training for metal rubber plastic high and low temperature universal testing machineMain purpose and scope of application

This testing machine is suitable for mechanical property testing and research of metals, rubber, plastics, and other materials, and can be widely used in industries such as machinery, metallurgy, construction, transportation, aviation, aerospace, ships, ceramics, automobiles, pharmaceuticals, and electronics.

2. Performance characteristics

① Loading framework

a. The main frame includes a platform panel, a crossbeam, a moving beam, columns, and ball screws. All parts are made of steel, with a compact structure and firm connections, ensuring the rigidity of the testing machine and the smooth operation of the moving beam.

b. The testing machine is divided into upper and lower testing spaces. The upper space is used for tensile testing, while the lower space is used for compression and bending testing. This reduces the hassle of replacing testing aids for different tests and ensures the accuracy of the testing machine, making it easy to operate.

c. The experimental space is sufficient to meet various testing requirements to the maximum extent possible.

d. The protective cover of the rack ensures the cleanliness of the ball screw, and the limit device of the crossbeam can freely set the limit position of the moving beam up and down, ensuring the safe operation of the testing machine.

② Beam drive

a. The AC servo drive system controls the AC servo motor and drives the ball screw to rotate through a precision planetary reduction system, thereby moving the crossbeam up and down.

b. Adopting seamless circular arc synchronous belt linked with two lead screws, high efficiency, low noise, ball screw

Transmission loading, force value

③ Testing machine controller

a. Collect load, displacement, deformation measurement and display, speed control, and test parameter setting

It integrates functions such as testing machine calibration, data processing, and report output.

b. Magnify the experimental force and deformation in four levels.

c. Fully automated data processing. The main projects include: elasticity measurement, upper and lower yield points

Maximum point, fracture point, non proportional stress point, local curve amplification, etc.

d. Data processing, curve drawing, and output.

e. Display mode: screen display

f. Operation method: Operate through the 101 keyboard and mouse menu.

④ Other characteristics

a. Use 220V mains power.

b. The safety protection device can prevent overtravel, overload, leakage, and current overload, etc

The occurrence of problems.

c. There are various special attachments available as optional items.

3、 Main technical indicators

4、 Working conditions

a. Within the temperature range of 10-35 ℃ at room temperature;

b. Relative temperature ≤ 80%;

c. In an environment without vibration, corrosive media, and strong electromagnetic interference;

d. The variation of power supply voltage is within 10% of the rated voltage;

e. Stable installation on a sturdy foundation.

5、 Working principle

The testing machine consists of a host, a drive motor and control system, a transmission system, an electronic universal machine measurement and control system, a computer, data processing software, and various accessories.

1. Host part

The main structure of the machine adopts a portal structure, divided into upper and lower test spaces. The upper test space is used for tensile testing, and the lower test space is used for compression and bending. The motor controller drives the motor, and after deceleration by a precision planetary reducer, the ball screw is driven to rotate by a gapless circular arc synchronous belt to achieve the up and down movement of the moving beam. The moving beam is equipped with high-precision load sensors, and an extensometer can be clamped on the marking line of the sample to measure the test force and deformation of the sample. There is a red emergency stop switch on the lower right side of the host. When an emergency situation occurs, quickly press the emergency stop switch to stop the movement of the crossbeam.

2. Testing machine measurement and control system and software

The measurement, control, and data processing of the testing machine are all completed by the testing and control system and software of the testing machine. The testing and control system of the testing machine is connected to the host and microcomputer. The testing personnel can input the test parameters through the keyboard, and the microcomputer displays and processes the test parameters and results in real time. The printer prints the test results. Please refer to the "Electronic Universal Software User Manual" for details.

3. Strong electric part

The high-voltage part of the testing machine is installed inside the base of the testing machine and connected to the power grid through a power cord. There is a power switch and emergency stop button located on the lower right side of the front of the base. The power switch is the power supply switch of the host. In case of emergency, pressing the emergency stop switch can cut off the power supply of the host, protect the host, and rotate the emergency stop switch to restore power.

6、 Lifting and transportation

After unboxing the testing machine, please first check whether the random files and accessories of the testing machine are consistent with the packing list.

2. The mainframe of the testing machine is lifted with a soft cable. When lifting, the lifting point (upper crossbeam lifting ring) should be set. Do not lift other positions. If conditions do not allow, use a forklift to lift the middle crossbeam, but wrap it with soft cloth to avoid scratching the testing machine.

According to the laboratory space, the installation positions of other devices can be arranged accordingly.

4. The testing machine should be placed on a solid concrete cement ground.

7、 Usage and Operation

During the initial use of the testing machine, the software user manual should be consulted at all times. The following are brief instructions for use.

1. Operation method and steps:

The steps for starting the whole machine are as follows:

① Connect the power supply and turn on the power switch located on the lower right side of the host. At this point, the electrical system

The system and microcomputer are in a charged state.

② Activate the controller.

③ Preheat for 10 minutes.

④ Adjust mechanical limit: The left two round head handles of the host are used to adjust the upper and lower parts of the middle crossbeam

Lower limit position. The upper limit is used to prevent direct collision of stretching aids, and the lower limit is used to prevent direct collision of compression aids to protect sensors and the host.

⑤ If you need a computer and printer to print reports, power on the computer and printer.

⑥ Select the corresponding test force range, adjust the test force reset button to display the test force as

zero

⑧ Press the "up" or "down" button to quickly move the center crossbeam to the test position,

At this point, the sample can be clamped and the displacement can be displayed as zero.

⑨ Choose the desired speed.

⑩ Press the 'Start' button to start the experiment.

When the specimen fractures or the test is completed, the "stop" button can be pressed to end the test.

Due to the fact that the operation of the machine is mainly carried out through human-machine dialogue, it is necessary to master the above-mentioned opening

After the machine and steps, various tests can be completed by referring to the software manual.

2. Use of attachments

① Installation of stretching device:

Install the lower fixture into the lower joint, connect it with a pin, and tighten it with a locking nut.

Install the upper fixture into the central hole of the connecting shaft and connect it with a pin.

Install the fixturesimpleThe method is to place the upper fixture on the lower fixture and horizontally

Lower the beam and assemble the upper fixture with the connecting shaft. At this point, caution should be exercised to avoid collisions.

1. Data board window

Data is the core of the entire measurement system, as the entire experimental process revolves around data. The process from specimen data to test data, and then to analysis data, is displayed on the data board. The data board can be accessed from the system menu or toolbar.

When the program starts, the default loaded test method is the test method selected by the user last time. If it does not match the actual test method, the user must first select the corresponding test method. After selection, the "data board" will make corresponding changes. The display content of the data board varies with different experimental methods. The system has a built-in database dynamic parser, which defines the experimental methods in the database, including data items, calculation formulas, etc. After selecting a certain experimental method, the system dynamically parses and generates a program interface in real time. Therefore, for the same execution program, configuring different databases will result in different data board interfaces.

2. Data board toolbar

The detailed description of the toolbar is shown in the following figure. The toolbar contains all the functions of data manipulation, including creating, opening, saving, deleting, and printing experimental data. From left to right:

New: Open the window for creating new sample information, which is the first step in starting the experiment;

Open: Retrieve historical data based on specific query criteria;

Save: Save the test curve or any changes made by the user to the data to the database;

Save as txt file: Save data and curves as txt files;

Save as Excel file: Save data and curves as Excel files;

Print: Print and output the current recorded data in the pre-set report format;

Conventional printing: Use the software's built-in printing tools to print, with simple printing operations;

Excel printing: Corresponding data to an Excel template for printing. The production of printed reports is relatively complex, with the advantage of diverse reports. Please refer to the instruction manual for details.

Select the type of experiment

When preparing to start the experiment, first select the type of experiment. As shown in the figure, click the drop-down arrow next to the "Standard" button on the toolbar, and select the appropriate item from the list of test types that appear. As shown in the figure, we choose "Room temperature tensile test of metal materials (GB228-2010)".

New specimen information

Then it is to input the information of the test piece to be inspected into the computer. All specimen information and test data are saved in the same database file by the MaxTest program. In this database, one experimental data is saved as one record. If the database file is treated as a huge data table, one record is equivalent to one row in this table. And this table can be continuously extended.

Click the "New" button on the data board (see data board instructions), and a new window (as shown below) will appear. The new window contains two tabs, namely the "Template Input" option and the "Batch Input" option

1. Single piece information:

The user inputs some relevant information about the experiment on the page, such as specimen batch number, specimen number, test date, tester, specimen shape and size, So (cross-sectional area), Lo (originally gauge length), etc. Note that when entering the corresponding size format based on the shape of the specimen, the system will automatically calculate the cross-sectional area of the specimen.

Users can also directly open the saved specimen template files in the list on the right without having to input them again; Click on the template name with the mouse, and the content of the specimens included in this template will be directly filled in. After filling in the specimen information, you can also click the button on the right side of the page to save the filled data as a template file.

2. Batch creation:

After entering the template information, switch the window to the page.

Click the [New] button on the page to copy the template data to the specimen information data buffer below. At this point, the user can switch back to the original page to start inputting the next specimen information.

In many cases, the specimens are in batches, and for the same batch of specimens, most of their shape characteristic parameters are the same, the only difference may be the number or other identification number. In response to this situation, the system can generate a batch of specimen information data at once and fill it into the data buffer. Click the button, and a window will appear (as shown below).

Firstly, select the sequence of the main change, usually the specimen number, etc. In order to be more flexible, the system divides the sequence into three parts: prefix, change part, and suffix. The prefix and suffix are the unchanged parts, and the middle is the change sequence, which can be specified with a fixed number of digits. The system automatically adds zeros to the front (please read the example below).

In addition to the main variation sequence, another secondary variation sequence can also be selected. Click the [Secondary Sequence Valid] checkbox button in the window to add a secondary variation sequence. The changes in the secondary sequence are similar to those in the main sequence.

Reasonable use of batch creation can help users improve the efficiency of inputting specimen data.

3. Modify specimen information

Copy the data from the input area to the input buffer. At this time, the specimen data has not been saved to the database, and the user can still change the data content in the data buffer according to the actual situation.

Under the input buffer (batch input page), users can modify each column in any newly created row of data. When modifying, the system provides the function of locking columns, which means that when the number of columns to be locked is selected (as shown in the figure below), the first few columns will be locked and cannot be modified or moved in any way. The advantage of locking columns is that when there are many columns of data that cannot be displayed simultaneously in the window, when modifying the data in the following columns, the previously locked columns can also be seen, which is convenient for modification. After modifying the size of the specimen here, press the enter key, and the system can also calculate the cross-sectional area of the specimen.

Note that after modifying the column width, the system will remember the current column width, and when creating new data, the system will load the new data according to the memorized column width.

4. List of Sample Template Names:

Any specimen template records the basic information of a specific specimen, and users can save any type of specimen and its related information as a specimen template. This way, when processing the same specimen in the next experiment, they can directly open (select the specimen template name with the mouse) the corresponding template, and the system will automatically fill in the specimen information; For example, if the user is currently testing a round steel with a diameter of 20mm, they can first fill in the information of one specimen into the specimen data input area. Then select the button below the list of specimen template names, and a dialog box will appear where the user can enter the template name. Generally, a meaningful name can be chosen, such as [Round Material 20]. From this name, the user immediately knows that it corresponds to the information of a 20mm diameter circular specimen. In this way, next time, if the user tests a circular specimen with a diameter of 20mm, he only needs to click on [Round Material 20] in the specimen template list with the mouse, and the information contained in this template will be automatically imported. The user only needs to make slight modifications.

5. Sample information data buffer:

In order to facilitate users to input multiple types of specimen data at once, the system first fills the entered specimen data into this area. Users can check the accuracy of the data here before saving it to the database.

U modification: Double click the data area to be modified with the mouse, modify it, and then press Enter.

Delete: Use the mouse to select the data row to be deleted, and then click the [Delete] button.

6. Confirm:

Save the data in the data buffer to the database and add them to the data board, while closing the new window.

Open historical data

After the user creates a new specimen record, they can immediately start the experiment. But sometimes, we have to use the 'Open Historical Data' buttonFor example, after creating all the test piece records to be tested in the morning, the user completes a portion of the testing work in the morning and continues the unfinished testing in the afternoon. And all the specimen information was entered in the morning, the first step in the afternoon testing is to open the specimen information that was entered in the morning but has not been tested yet. Alternatively, if the user needs to query previously completed test data, they can click the [Open] button on the data board, and an open window will appear (as shown below).

The user first selects the query criteria, then specifies the query range, clicks the "Browse" button, and these data will be filled in the table below. After clicking OK, the system will fill the data into the data board. The system can also open data saved in file format (see the button instructions on the data board), select "by file format", then click the "..." button, and select the saved data text file (data opened in file format is read-only).

If users want to query historical data, the operation method is the same.

8、 Calibration of force values for testing machines

1. Adjust the testing machine to a good condition, following the same normal usage method as the testing machine

Prepare a 0.3 level standard dynamometer.

2. Lower the moving beam according to the height of the dynamometer and stop it at the appropriate position. Measure it

Place the force gauge on the lower pressure plate, select the appropriate speed of the crossbeam movement (usually 0.02mm/min) to drive the crossbeam downwards, observe whether the digital force value is the same as the standard force gauge reading. If the deviation is large, adjust the force coefficient on the software to make the deviation less than ± 1%.

Select the<Force Sensor Calibration>option under the<Adjustment>menu or press F8 to open the calibration window, as shown in the figure. The calibration window corrects the measurement linearity of the sensor by adjusting the readings of multiple different sampling values.

Calibration steps:

1. External standard force gauge, such as pressure ring, measures the force value. In the case of no force, enter 0 in the and click Add;

2. Start the testing machine and apply pressure by manually adding oil or other methods;

3. When the actual load reaches a certain value, such as 10kN, fill in the actual load value at this time in the "Calibration Value" window and press the "Add" button to add it;

Repeat steps 2 and 3, and use multi-point correction to achieve excellent linearity in the measurement of the differential transformer as much as possible. This calibration method allows for the selection of any point for correction, as long as the number of correction points does not exceed 21.

If the machine has already been calibrated, but needs to be recalibrated due to software system reinstallation or other reasons, the original calibrated data can be backed up and copied down, and added directly "manually" in the new system to complete the calibration.

9、 Repair and maintenance

1. The testing machine is a precision equipment. When handling, follow the prescribed lifting method and do not collide.

2. Pay attention to rust prevention for the host and accessories, and apply oil when not in use for a long time.

3. The test machine should not be used for a long time and should be powered on once every week.

4. Pay attention to dedicated computers to prevent virus infections.

10、 Common faults and troubleshooting methods

1. The machine is not working;

a. Restart the power supply once;

b. Check if all connectors are securely plugged in;

c. Check if the emergency stop button has been pressed and if the sensor wiring and socket are in good condition.

During the operation of the testing machine, it suddenly stopped.

a. Unstable power supply;

b. During the experiment, a certain connector fell off.

If any abnormal sound is found during the experiment, immediately stop the vehicle and check the transmission system.

5. For faults that cannot be ruled out, please contact our company's after-sales service.