1. Scope of application:

This testing machine can carry out crushing load test on φ3~φ50mm or φ1/8″~φ2″ steel balls. The test data is accurate and reliable. In order to ensure the higher accuracy of the test force reading of the test machine, this machine uses sensors to measure the force. After magnification, the screen displays the test force, peak force and loading rate. Automatic control, more convenient operation, safe and reliable. The testing machine conforms to the national standard bearing steel ball, and every three steel balls is a group. Put a group of steel balls into the standard special crushed mold. The load test method is widely used in bearing steel balls, ceramic steel balls and other industries. .

2. Functions and features:

1. The testing machine adopts a new design concept and advanced control technology, which truly realizes a high-efficiency, energy-saving, low-noise, pollution-free, and updated product.

2. The test machine adopts a double-column frame structure, the upper pressure plate is installed on the upper fixed beam, the lower pressure plate loads the sample upward under the action of the driving screw, and the AC servo control and transmission system is installed on the lower part of the host . The testing machine adopts AC servo speed control system, which controls high-precision, high-frequency response AC servo motors, and drives precision ball screws for testing. It has the characteristics of small mechanical inertia and high dynamic response speed to ensure high system accuracy, low noise and safety The performance is reliable, the test process is stable, and the test speed can be adjusted in a wide range (0.01-50mm/min).

3. Use the liquid crystal display controller (WDW-Y300S) to test according to the requirements of national standards, and independently complete the test parameter setting, test process control, data collection and display during the test process. Both single-piece tests and group tests can be performed. Control and measurement are precise, accurate, fast, convenient and reliable.

4. An external microcomputer (WDW-Y300) can be connected according to user requirements to perform statistics and processing of test data, and then output and print various required test curves and test reports, which can realize storage and printing networking functions, intelligent and flexible.

5. It has the function of returning to the initial position after the test, which is efficient and fast.

6. With limit protection function of working position and overload and over current protection function, it is reliable and safe.

7. Brand microcomputer and printer, quality assurance (WDW-Y300).

3. Advantages:

Compared with the old electro-hydraulic servo pressure testing machine, this testing machine has the following advantages:

1. The test force measurement range is wider, more accurate and more stable: because the electro-hydraulic servo control valve has a zero cover problem during static control (this is an inherent feature of the electro-hydraulic servo valve itself), and the oil cylinder has sealing and friction The problem is that the output (displacement and test force) is not linear near the zero position, and it is easy to crawl at low speed, poor stability, and high initial pressure. It is impossible to achieve small deformation and small test force output control (short-age sample load is very Small, it cannot be achieved with this control method); using AC servo motor with ball screw control, there is no problem with the above-mentioned electro-hydraulic servo control, and the use of high-precision load sensors for force measurement, so the test force measurement range is wider and more accurate ,more stable. Low noise during the test: the noise of the AC servo motor is much lower than that of the hydraulic pump.

2. The control process is less affected by temperature and the performance is more stable.

3. There is no pollution problem caused by running, emitting, dripping or leaking hydraulic oil (the product is electronic). There is no problem that the servo valve is contaminated and stops working. The power and transmission system are more compact, the structure is more concise and clear, and the reliability is greatly improved. Long-term use has high reliability and maintenance-free (no cumbersome replacement of hydraulic oil).

4. Main technical specifications

1. Display mode: computer screen display (WDW-Y300); LCD digital display (WDW-Y300S)

2. Maximum test force (kN): 300kN

3. Test force measurement range and test accuracy: 6-300kN; no files in the whole process; accuracy better than ±1%

4. Adjustable range of test force speed: 1-10kN/s (precision higher than 5%)

5. Test speed control range: 0.01-50mm/min

6. The maximum distance between the upper and lower pressure plates: 200mm

7. Upper and lower pressure plate size: 140mm in diameter (can be customized)

8. Test method: single test can be done; can be connected into each group of tests