Feature
As a fifth-axis cam rotary table, RTB series from Campower Precision Machinery has a range of important features that make it a high-performance machining equipment.
High precision
High precision machining capability is crucial for applications that require high precision, as it helps achieve precise machining of complex curves and surfaces.
High speed
High speed enables fast positioning and rotation, which helps improve production efficiency and reduce machining time.
High rigidity
HIgh rigidity ensures the stability of mechanical equipment, reducing vibration and deformation, and helps achieve high-precision machining.
High torque
High torque capacity of RTB series cam rotary table enables them to handle applications requiring high power torque, which is crucial for machining larger or heavier workpieces.
Zero backlash
Zero backlash design helps ensure precise positioning and eliminates unnecessary gaps or clearance.
Drive mode
Unlike the commonly used worm and gear mechanisms in the market, COMP Precision Machinery employs roller cam mechanisms for both the fourth and fifth axes to drive the machine.
Roller cam mechanisms and worm and gear mechanisms are two different mechanical structures, and they differ in terms of stability, rigidity, and wear and tear:
|
|
Roller Cam Mechanism | Worm and Gear Mechanism |
| Stability | Exhibits higher stability. The design of roller cams allows for smoother motion, reducing vibration and instability. |
Lower stability, with potential for vibration and uncertainty, especially under high loads or high-speed conditions. |
|---|---|---|
| Rigidity | Possesses higher rigidity, providing better resistance to external forces and torque. | Relatively softer, potentially experiencing some deformation when subjected to external forces. |
| Wear and Tear | Lower wear and tear, capable of maintaining high precision over extended periods. | May experience wear and tear due to friction on contact surfaces, particularly during prolonged high-frequency use. |
| Backlash | Typically achieves zero backlash, offering more accurate motion control. | May have some backlash, affecting precision and the accuracy of motion. |
Applications
Specification
| Specification |
RTB125 |
RTB250
|
|
RTB250L |
|
RTB320BS RTB320BSR |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Table Diameter | mm |
Ø125
|
Ø250 |
| Ø250 | Ø320 |
| Ø 650 | ||||||||
| Center Height（Vertical） | mm | 110 |
220
|
| 290 | 365 |
350 | |||||||||
| Table Surface Height（Horizontal） | mm | 155 |
310
|
| 290 | - | 300 | |||||||||
| Reference Hole Diameter | mm | Ø30H7 | Ø55H7 |
| Ø75H7 | Ø76H7 | Ø 50H7 | |||||||||
| Through Hole Diameter | mm | Ø15H7 | Ø30H7 | Ø30H7 | - | - | ||||||||||
| Table Width | mm | 12H7 | 12H7 |
| 12H7 | 12H7 |
| 18H7 | ||||||||
| Degree of Reference Channel Width | mm |
14h7
|
18h7
|
| 18h7 |
18h7
|
| - | ||||||||
| MIN. Increment | deg. |
0.001° | 0.001 ° | 0.001 ° | 0.001 ° | 0.001 ° | ||||||||||
|
Swing Angle
|
deg.
|
Rotating Axis 360°
| Tilting Axis +30°~-110° | Rotating Axis 360° |
Tilting Axis +30°~-110° | Rotating Axis 360° | Tilting Axis +30°~-110° | Rotating Axis 360° | Tilting Axis +30°~-110° | Rotating Axis 360° | Tilting Axis -70°~+110° | |||||
| Servo Motor (Customer's choice) | FANUC | αiF 1/2 βiS 2 |
αiF 2+B βiS 2+B |
αiF 4
|
αiF 4+B | αiF 4 βiS 8 |
αiF 8+B βiS 8+B/12+B |
αiF 8
βiS 12 |
αiF 8+B βiS 12+B | αiF 12 | αiF 30+B | |||||
| MITSUBISHI | HG105S | HG105S+B | HG154S | HG154S+B | HG154S | HG154S+B | HG154S | HG154S+B | HG204S | HG703S+B | ||||||
| SIEMENS | 1FK7040 | 1FK7040+B | 1FK7060 | 1FK7060+B | 1FK7060 | 1FK7063+B | 1FK7063 | 1FK7063+B | 1FK7086 | 1FK7105+B | ||||||
| HEIDENHAIN | QSY116C | QSY116C+B | QSY116E | QSY116J+B | QSY116E | QSY116J+B | QSY155C | QSY190D+B | ||||||||
|
Max. Rotation Speed(Motor 3000 min-1) Values are Determined by the Servo Motor
| rpm | 37.5 | 25 | 66.6 | 31.25 | 50 | 31.25 | 50 | 25 | 50 | 33.3 | |||||
| Gear Ratio | 1/80 | 1/120 | 1/45 | 1/96 | 1/60 | 1/96 | 1/60 | 1/120 | 1/60 | 1/90 | ||||||
| Indexing Accuracy | arc-sec | 45 | 30 | 15 | 30 | 15 | 30 | 20 | 40 | 15 | 15 | |||||
| Repeatability Accuracy | arc-sec | 8 | 8 | 6 | 8 | 6 | 8 | 4 | 8 | 4 | 4 | |||||
| Clamp System (Pneumatic / Hydraulic) | P/H | P/H | H | H | H | H | H | H | H | H | ||||||
| Pneumatic / Hydraulic Pressure |
Kg/cm²
|
6/25 | 6/25 | 35 |
35 | 35 | 35 | 35 | 35 | 35 | 35 | |||||
| Pneumatic / Hydraulic Clamping Torque |
Kg．m
|
5/20 |
5/20 | 60 |
180 | 60 | 180 | 90 | 180 | 250 | 450 | |||||
| MAX. Allowable Load on the Table | Level |
|
Kg | 35 | 120 |
120 | 200 | 500 | ||||||||
| Tilt |
|
Kg | 20 | 80 |
80 | 200 | 500 | |||||||||
| MAX. Allowable Thrust Load on the Table (When clamped) | Allowable Axial Load |
|
Kgf |
400
|
1632 |
1632 | ||||||||||
| MAX. Output Torque |
|
Kgf．m |
14
|
92 |
92 | |||||||||||
| Allowable Bending Torque |
|
Kgf．m |
30
|
92 |
92 | |||||||||||
| MAX. Allowable Moment of Inertia | Kgf．m² | 0.1 | 0.4 |
0.4 | ||||||||||||
| Net Weight(servo motor excluded) | Kg |
120
|
320 |
460 | 725 | 1220 | ||||||||||
Dimensions
