Double Guide Post Upper Pull Internal Broaching Machine
Large tonnage upper broaching machine, double oil cylinder, double guide column, intelligent, high efficiency, high precision, high stability, environmental protection.



Technical characters
Advantages of broaching machine
1. The main structure has a high symmetry design, 2 guide rail center, 2 driving center, 1 broaching center 5 core coplanar;
2. Encoder position detection is adopted for broaching main motion and pickup tool auxiliary motion to realize full closed-loop control;
3. High flexibility of bilateral operation form;
4. Kneading, safe tool lifting device, better protect the tool;
5. The control system of independent in-depth secondary development is adopted;
6. Tool fixture replacement auxiliary device, reduce the manual operation strength of tool replacement; Enhance the safety of operation, and tooling replacement efficiency.
| Model | LG55710 | LG55720 | LG55730 | LG55740 | LG55760 |
| Rated tension force | 100kN | 200kN | 300kN | 400kN | 600kN |
| Rated stroke rate | 1250mm | 1600mm(1800mm) | 1600mm(1800mm) | 2000mm | 2000mm |
| Broaching speed(stepless speed regulation) | 1~7m/min | 1~7m/min | 1~7m/min | 1~7m/min | 1~6m/min |
| Main slide return speed(stepless speed regulation) | 2~15m/min | 2~15m/min | 2~15m/min | 2~15m/min | 2~15m/min |
| Tool connecting speed(stepless speed regulation) | 1~5m/min | 1~5m/min | 1~5m/min | 1~5m/min | 1~5m/min |
| Cutter feeding speed(stepless speed regulation) | 1~5m/min | 1~5m/min | 1~5m/min | 1~5m/min | 1~5m/min |
| Disk maximum aperture | Φ70 | Φ100 | Φ150 | Φ150 | Φ200 |
| Distance of station | Single working position | Single working position | Single working position | Single working position | Single working position |
| Max workpiece(diameter x thickness) | Φ220×200 | Φ280×200 | Φ300×200 | Φ300×200 | Φ480×200 |
| Net weight of machine | About14000 kg | About 21000 kg | About 22500 kg | About 22500 kg | About 32500 kg |
| Machine working space (L × W × H) | 4300mm×3650mm×4800mm | 4500mm×3550mm×5400mm | 4500mm×4050mm×5600mm | 5150mm×4200mm×6650mm | 5650mm×4550mm×6850mm |
| Model | LG55710-Ⅱ | LG55710-Ⅲ | LG55720-Ⅱ | LG55720-Ⅲ | LG55740-Ⅱ | LG55740-Ⅲ | LG55760-Ⅱ | LG55760-Ⅲ |
| Rated tension force | 100kN | 100kN | 200kN | 200kN | 400kN | 400kN | 600kN | 600kN |
| Rated stroke rate | 1250mm | 1250mm | 1250mm | 1250mm | 1600mm | 1600mm | 2000mm | 2000mm |
| Broaching speed (stepless speed regulation) | 1~7m/min | 1~7m/min | 1~7m/min | 1~7m/min | 1~7m/min | 1~7m/min | 1~6m/min | 1~6m/min |
| Main slide return speed (stepless speed regulation) | 2~15m/min | 2~15m/min | 2~15m/min | 2~15m/min | 2~15m/min | 2~15m/min | 2~15m/min | 2~15m/min |
| Tool connecting speed (stepless speed regulation) | 1~5m/min | 1~5m/min | 1~5m/min | 1~5m/min | 1~5m/min | 1~5m/min | 1~5m/min | 1~5m/min |
| Cutter feeding speed (stepless speed regulation) | 1~5m/min | 1~5m/min | 1~5m/min | 1~5m/min | 1~5m/min | 1~5m/min | 1~5m/min | 1~5m/min |
| Disk max aperture | Φ60 | Φ60 | Φ70 | φ110/2-Φ70 | Φ110 | Φ110/2-Φ90 | 2-Φ110 | Φ105 |
| Distance of station | 2 Working Station | 3 Working Station | 2 Working Station | 3 Working Station | 2 Working Station | 3 Working Station | 2 Working Station | 3 Working Station |
| Maximum workpiece diameter x thickness | Φ130×100 | Φ130×100 | Φ140×180 | Φ220×180 | Φ200×200 | Φ320×200 | Φ220×200 | Φ200×200 |
| Net weight of machine | About14000 kg | About15500 kg | About18000 kg | About19500 kg | About23500 kg | About24500 kg | About33000kg | About34500kg |
| Machine working space (L ×W ×H) | 4300mm×3650mm×4800mm | 4500mm×3650mm×4800mm | 4500mm×3550mm×4537mm | 4650mm×3550mm×4537mm | 5150mm×4200mm×5850mm | 5250mm×4200mm×5980mm | 5650mm×4550mm×6850mm | 5650mm×4550mm×6850mm |
Performance
LG557 series double guide column upper pull internal broaching machine, this machine structure adopts double guide column guide form and double cylinder drive, 2 guide rail center, 2 driving center, 1 broaching center to achieve 5 core coplanar, the advantage of this structure is to eliminate the traditional broaching machine due to the structure of the overturning torque, so that the workpiece in the broaching process of broaching force is uniform and symmetrical. The deformation generated by the table is also symmetrical offset, workpiece positioning surface and broach axis is always vertical movement.
Certificate

Our R & D team establish a long - term partnership with National University of Defense Technology, Dalian University of Technology, Hunan University, Central South University, and other renowned institutions. Yuhuan is also research base for Hunan University’s doctoral student, get 5—9 patents per year.
Has got36 related patents
A certificate of international standard products in 2005
Has passedISO9001 : 2000 international quality system certification, has estabished corporate product standards
Packing and Transportation

1. Moisture-proof packaging+Wooden Box.
2. Special packing requirements available.
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