JD18 Projecting Universal Microscope
PURPOSE
The universal microscope is a length-measuring instrument that is of precise mechanism, optical system and electrical system. Besides being used to determine the dimensions of workpiece by methods of direct and differential measurements, special accessories of this instrument can be used to deal special measurements. The scope of use is as follows:
External measurements:
*Workpiece with flat-parallel faces;
*Workpiece with spherical face;
*Cylindrical workpiece in vertical position;
*Cylindrical workpiece in horizontal position
Internal measurements:
*Workpiece with flat-parallel face;
*Hole measurement, using yokes;
*Hole measurement, using " Magic Eye"
Screw thread measurements:
*External thread pitch diameter;
*Internal thread pitch diameter
Characteristic:
With changing projection reading for eyepiece type it is convenient for use. With employing wax screen and setting magnifier before the screen, therefore it can improve the imago quality and whole view field obtains even brightness itself.
A heat-insulating glass is set in front of the optical system, the temperature of the instrument will not change very much, and then indication stability is increased. The reading system adopts a method of that the graduation of the mm scale, which can be centered in a set of double lines, thereby sighting accuracy is increased. If an optimeter tube is built on its tail tube, it become a horizontal optimeter.
SPECIFICATION
Specifications:
*Measuring range:
. Direct measuring range 0-100mm
. Comparative measuring
External size 0-500mm
Internal size
With large or small measuring yokes, with insertion
Depths of 4-50mm 10-200mm
With'Magic Eye's device 1 -20mm
. External thread pitch diameter measurement up to 180mm
. Internal thread pitch diameter measurement, with insertion depths of 10-50mm 14-140mm
Minimum scale unit: 0.001mm
*Work stage:
. Vertical travel: 100mm
. Transverse travel: 25mm
. Scale unit of micrometer drum: 0.01mm
*Maximum diameter gripped by the tailstock:
. While length of workpiece is less than 85mm φ 180mm
. While length of workpiece is equal to 200mm φ 20mm
*Maximum inaccuracy:
. External size
If scale correction list is not used: (1.5+L/200)μ M
If scale correction list is used: (1 +L/200)μ M
. Internal size
If scale correction list is not used: (2+L/200)μ M
If scale correction list is used: (1.5+L/200)μ M
(Note: L-Length being measured in mm)
*Repeatability of the instrument:
. External measurement: 0.3μ M
. Internal measurement: 0.5μ M
*Dimensions of the instrument: 1000*370*620mm
*Weight of the instrument: 115Kg
Main Accessories:
Internal measuring device: Large and small measuring yokes, fixed tail sleeve.
" Magic Eye" Device: Ball-tip measuring insert, insulated stage.
External thread measuring device: Three-wire holder, horizontal center cradle, and Φ 14 flat contact tip.
Internal thread measuring device: Floating stage, 9 pairs of thread gauging balls, V-jaw gauge block 600.
Contact tip: Flat contact tip of Φ 2 and Φ 8, knife-edge contact tip of 1.5*8, spherical contact tip of R20.
Horizontal projection optimeter tube
Large and small movable measuring yokes
| Model |
JD18 |
| Measurement range (mm) |
Absolute measurement |
0~100 |
| |
|
| Relative measurement (mm) |
External size |
0~500 |
| Internal size:when using measuring hook |
10~200 |
| Internal size:When using electric measuring hook |
1~20 |
| Intermediate diameters between external screws |
0~180 |
| Intermediate diameters between internal screws |
14~140 |
| Minimum division value |
0.001mm |
| Measuring force |
|
1.5N~2.5N |
| Readout transaction data of the gauging spindle |
Measurement of external size |
0.3μm |
| Measurement of internal size |
0.5μm |
| Measurement accuracy |
Measurement of external size |
≤(1+L/200)μm |
| Measurement of internal size |
≤(1.5+L/200)μm |
| Universal worktable |
Division value of horizontal micro-drum |
0.01mm |
| Horizontal stroke |
25mm |
| Vertical stroke |
100mm |
| load capacity |
10kg |
| Maximum diameter gripped by the tailstock |
When the length between 0~85 |
φ180mm |
| When the length to 200 |
φ20mm |
| Fitting size for the measuring cap's internal diameter |
φ6H7 |
| Size of outer diameter between the reference rod and the measuring cap's internal diameter |
φ6g6 |
|
| Overall size (mm) |
1000×370×620 |
| Weight |
127kg |
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