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YRTM150 Rotary Table Bearing With Measuring System
Structure introductionThe Austria AMOSIN steel grade measurement system including three parts: measuring scale, reading-head and electronic assessment. The measuring scale was installed on the inner ring of the bearin. it is a steel ring with grids uniform distribution on. The reading-head was installed on the outer ring of the bearing (figure 1), it is near the measuring scale, but no contact, there is a 0.1--0.2mm clearance between them.
When Working, the bearing rotates, the measuring scale and the reading- head (figure 3) do non-contact relative motion, then transfer the data which was collected by induction to the electronic evaluation (figure 6) through the cable (figure 5). Then the electronic assessment converts the information to square wave or Positive harmonic signal. The signal was put into the numerical control system into the machine tools, to realize the measuring and control to the angular displacement.
Application parameters
AMOSIN steel measuring system has many different kinds of configuration; we can offer the best solution according to your requirement.
When order, the buyer should provide the following information: location accuracy rotary speed for real-time working, the length of the cable, the kinds of the signal output, line number, the number and type marked on the reference point.
The measuring scale has three precision grades of +\-3 μm (Arc length), +\-5 μm(Arc length), +\-10μm(Arc length).
Reference point mark’s quantity and type: Standard feature is every 360 degrees, a reference point mark. We can do as clients’ actual application: more reference point mark
Signal output type :IVPP or TTL.
| Bearing Type | Boundary dimensions (mm) | Inner ring / outer ring (fixing holes) (mm) | |||||||||||||
| d | D | H | H1 | H2 | C | d1 | dn | dm | d0 | ds | TS | quantity | dL | quantity | |
| YRTM150 | 150 | 240 | 41 | 27 | 10 | 12 | 214 | 165 | 225 | 7 | 11 | 6.2 | 34 | 7 | 33 |
| YRTM180 | 180 | 280 | 44 | 30 | 10 | 15 | 244 | 194 | 260 | 7 | 11 | 6.2 | 46 | 7 | 45 |
| YRTM200 | 200 | 300 | 45 | 30 | 10 | 15 | 274 | 215 | 285 | 7 | 11 | 6.2 | 46 | 7 | 45 |
| YRTM260 | 260 | 385 | 55 | 36.5 | 13.5 | 18 | 345 | 280 | 365 | 9.3 | 15 | 8.2 | 34 | 9.3 | 33 |
| YRTM325 | 325 | 450 | 60 | 40 | 15 | 20 | 415 | 342 | 430 | 9.3 | 15 | 8.2 | 34 | 9.3 | 33 |
| YRTM395 | 395 | 525 | 65 | 42.5 | 17.5 | 20 | 486 | 415 | 505 | 9.3 | 15 | 8.2 | 46 | 9.3 | 45 |
| YRTM460 | 460 | 600 | 70 | 46 | 19 | 22 | 560 | 482 | 580 | 9.3 | 15 | 8.2 | 46 | 9.3 | 45 |
Advantages of the steel measuring system:
1. No- contact inductive encoder, no wearing.
2. The precision can match to the optical encoder, highest precision < 2 arc-second
3. Double reading-head measuring system can correct the deviation on bearing radial in real time.
4. High speed, high resolution, high dynamic performance.
5. No magnetic components, no hysteresis reaction, no demagnetization danger.
6. Strong anti-jamming to solid grain, oil etc. Protection grade IP67, resistance to water pressure and dense dust, not sensitive to any type of dirt and pollutants.
7. Compact design, no matter for narrow installation space.
8. Easy for installation, high speed for adjustment, high resistance to impact and vibration, good stability, high reliability.
9. Mounted on the YRT Rotary table bearing, the rotating shaft’s final output end can be measured directly, which can reduce all the flexible connection’s influence to the precision.
10. Can output sine wave (1VPP) and square wave signal (TTL), absolute value signal (SSI), compatible with Siemens, Mitsubishi and Fanuc numerical control system, etc
11. Incremental measuring scale and absolute measuring scale, two types for customer to choose.
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