JD3 Vertical Projection Optimeter
PURPOSE
The Projection Optimeter is a high precision length-measuring instrument by comparing measures. It is extensively used to measure grade four and five of standard gauge block (JD20 may measure grade three and four of standard gauge block) and precision parts (as steel ball, roller column, precision parts of ladder shaped etc. ) for external dimensions.
Features:
Characteristics
The instrument can drive 5-grade block gauges.
It can be used for the verification of high-precision plain plug gauges, thread plug gauges and precision sphere diameters.
It is equipped with various worktables, convenient for replacement, in accordance with parts of different shapes.
Usages:
Technical parameters:
Range of measurement: 0-180mm
Worktable
Circular plane worktable (D): φ 88mm
Circular grooved worktable (D) φ 88mm
Square grooved worktable (mm) 142× 130mm
Small three-ball worktable: Used for the verification of thin black gauges small three-ball worktable: Parallel tolerance is 0.0015mm
Instrument precision index
Indication error
Within 60μ M range: ± 0.20μ M
Over 60μ M range: ± 0.25μ M
Indication stability: 0.1μ M
Projection optimeter tube
Graduation value of dividing plate: 0.001mm
Graduation range of dividing plate: ± 0.1mm
Measurement force: 2N± 0.2N
Free elevating distance of measuring lever: 0.5mm
Fit outside diameter of projection optimeter tube: φ 28h6
Fit outside diameter of measuring lever and measuring cap: φ 6g6
Ambient environment of the instrument service
Room temperature: 20 centigrade± 3 centigrade
Relative humidity: Not more than 60%
Mainframe weight: 21kg
Overall sizes of the instrument (mm): 340× 160× 750
| Model |
|
JD3 |
| Range of measurement (mm) |
0~180 |
| Worktable |
Circular plane worktable (D) |
φ88mm |
| |
Circular ribbed worktable (D) |
φ88mm |
| |
Square ribbed worktable (mm) |
142×130 |
| Fit outside diameter of measuring spindle and measuring cap of worktable |
φ6g6 |
| Allowable difference of parallelism of small three-poinit worktable |
0.0015mm |
| Indication error |
Within 60μm range |
±0.20μm |
| Over 60μm range |
±0.25μm |
| Indication stability |
0.1μm |
| Projection optimeter tube |
Graduation value of dividing plate |
0.001mm |
| Graduation range of dividing plate |
±0.1mm |
| Measurement force |
2N±0.2N |
| Free evevating distance of measuring lever |
0.5mm |
| Fit outside diameter of projection optimeter tube |
φ28hg |
| Fit outside diameter of measuring lever and cap |
φ6g6 |
| Room temperature |
20 centigrade ±3 centigrade |
| Humidity |
|
60% |
| Overall size (mm) |
340×170×750 |
| Weight |
|
21kg |
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