1、Introduction:

The XT-50 impact specimen projector is an optical instrument developed by our company based on the actual needs of users and the notch requirements of impact specimens in GB/T229 "Metal Charpy Impact Test Method". It is specifically designed to test the machining quality of Charpy V-shaped and U-shaped notches. This instrument uses optical projection methods to magnify the V-shaped and U-shaped notch contours of the tested impact specimens by 50 times and project them onto the projection screen, Compare the V-shaped and U-shaped notch standard sample drawings on the projection screen to determine whether the tested sample notch is qualified. Its advantages are easy operation and intuitive comparison.

2、 Plan description:

The light emitted by the light source of this projector is projected onto the measured object through a condenser, and then the magnified outline of the illuminated object is projected onto the projection screen through the objective lens. As needed, this instrument is a single projection illumination, where the light source is projected onto the workbench through a series of optical elements, and then the contour of the tested sample notch is clearly projected onto the projection screen through a series of optical elements. The object is magnified and reflected twice to form a positive image, and the pattern seen on the projection screen is consistent with the orientation of the actual sample placement. Place the measured sample on the worktable, rotate the worktable lifting handwheel, focus until the image is clear, and then adjust the circular worktable and longitudinal and transverse adjustment handwheel to compare the magnified V-shaped (or U-shaped) notch projection of the sample with the standard size diagram of the impact sample notch provided by this instrument, which has also been magnified by 50 times, to determine the geometric dimension processing quality of the V-shaped (or U-shaped) notch of the impact sample.

3、 Main technical parameters:

1. Projection screen diameter: 180mm 

2. Light source (halogen tungsten lamp): 12V 100W 

3. Workbench size: 

a. Square workbench size: 110 × 125mm; b. Circular worktable diameter: 90mm; c. Workbench glass diameter: 70mm 

4. Workbench travel:

Vertical: ± 10mm; Horizontal: ± 10mm; C lifting: ± 12 mm (without scale) 

5. Workbench rotation range: 0-360 ° (without scale) 

6. Power supply: 220V 50Hz 

7. External dimensions: 515 × two hundred and twenty-four × 603mm

8. Weight: approximately 18kg

9. Instrument magnification: 50x 

Objective magnification: 2.5x; Projection objective magnification: 20x 

4、 Quality assurance 

The equipment warranty period is one year from the official delivery date. During the warranty period, the supplier provides timely and free maintenance services for various equipment malfunctions. Timely and free replacement of all types of parts damaged by non-human factors. If the equipment outside the warranty period malfunctions during use, the supplier actively assists the ordering party in completing maintenance tasks.