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一、Main characteristics and application scope of machine tools
This machine tool is a 5-axis 2-linked CNC end face cylindrical grinder. The overall structure of the machine tool adopts a movable layout of grinding wheel stand and pallet, and is made of high-strength and low stress HT300 pearlite cast iron material, which has high rigidity and excellent precision stability. This machine tool adopts double grinding wheel oblique cutting and forming grinding, which can perform one-time grinding on the outer circles, arcs, and end faces of the two ends of the automobile axle housing (/axle) without the need for secondary clamping and turning grinding, resulting in high production efficiency. The numerical control system of this machine tool adopts the SIMENS 828D numerical control system, which uses advanced and reliable devices as the machine tool control platform. The human-machine interface is friendly, and it has complete equipment fault alarm and diagnosis functions. It has dual channel control. The grinding work of the machine tool can be automatically cut in and fed periodically through program control, and can also be fed by electronic handwheel.
3、Application scope
This machine tool is suitable for grinding the surface of cylindrical or conical rotating bodies with IT6~IT7 precision. It can be used for form grinding by inserting and repairing two axis grinding wheels, and can also be used for longitudinal reciprocating grinding. Machine tools are mainly used for grinding typical double-sided grinding parts such as axle shells and axles.
二、Main specifications and parameters of the machine tool
Main specification list：
Item | Value |
Center height | 600mm（Suitable for bridge shell grinding process） |
Maximum rotation diameter | φ1200mm（Suitable for bridge shell grinding process） |
Maximum grinding diameter | φ500mm |
Minimum grinding diameter | φ50mm |
Minimum grinding length | 1500mm（Workpiece length -2 times the axial length of the grinding area） |
Maximum Top Distance | ≥3000mm |
Maximum length of workpiece | 3000mm |
Minimum horizontal feed rate of pallet | 0.001mm |
Minimum longitudinal feed rate of pallet | 0.001mm |
X-axis feed rate | 0.05-5000mm/min |
Z-axis feed rate | 0.1-5000mm/min |
Positioning accuracy（GB/T4685-2007） | X axis ≤0.013mm 0.008 Z axis ≤0.025mm 0.015 |
Repeatability（GB/T4685-2007、HDCNC standard） | X axis≤0.006mm 0.005 Z axis≤0.013mm 0.008 |
Grinding wheel specifications（max） | Φ900（/750）mm×300mm(max)×Φ305mm |
Grinding wheel motor power | 30KW |
Workpiece rotate speed | 15~150rpm(Reserved parking positioning function for bridge shell) |
Grinding wheel linear velocity | ≤45m/s |
Maximum workpiece quality (axle) | 1000kg |
Maximum load-bearing capacity (including fixtures and bridge shells) | ≥800Kg |
Headstock Top | Mohs No. 6 |
Headstock travel | 100mm |
Tail rack top | Mohs No. 6 |
Tailstock sleeve travel | 70mm |
三、Machine tool accuracy
1.1 Position accuracy of CNC axis：
X axis： positioning accuracy 0.012㎜
repeatability 0.005㎜
Z axis： positioning accuracy 0.015㎜
repeatability 0.008㎜
1.2 Work accuracy (bridge shell, standard specimen)：
Item (Standard Grinding Rod) | Value |
Roundness | 0.005mm（Meet the requirements of the bridge shell/axle drawings） |
Consistency of longitudinal section diameter | 0.008/1000mm（Meet the requirements of the bridge shell/axle drawings） |
Surface roughness Ra | Cylindrical 0.4μm ；end face 0.8um; arc 0.8um |
Note: Meet the conventional machining accuracy requirements for bridge shells and axle parts in China, namely: machining workpiece roundness ≤ 0.005mm; Same side bounce ≤ 0.015mm; Bounce on both sides ≤ 0.03mm | |
Processing case
Gear industry
Car industry
一、Main characteristics and application scope of machine tools
This machine tool is a 5-axis 2-linked CNC end face cylindrical grinder. The overall structure of the machine tool adopts a movable layout of grinding wheel stand and pallet, and is made of high-strength and low stress HT300 pearlite cast iron material, which has high rigidity and excellent precision stability. This machine tool adopts double grinding wheel oblique cutting and forming grinding, which can perform one-time grinding on the outer circles, arcs, and end faces of the two ends of the automobile axle housing (/axle) without the need for secondary clamping and turning grinding, resulting in high production efficiency. The numerical control system of this machine tool adopts the SIMENS 828D numerical control system, which uses advanced and reliable devices as the machine tool control platform. The human-machine interface is friendly, and it has complete equipment fault alarm and diagnosis functions. It has dual channel control. The grinding work of the machine tool can be automatically cut in and fed periodically through program control, and can also be fed by electronic handwheel.
3、Application scope
This machine tool is suitable for grinding the surface of cylindrical or conical rotating bodies with IT6~IT7 precision. It can be used for form grinding by inserting and repairing two axis grinding wheels, and can also be used for longitudinal reciprocating grinding. Machine tools are mainly used for grinding typical double-sided grinding parts such as axle shells and axles.
二、Main specifications and parameters of the machine tool
Main specification list：
Item | Value |
Center height | 600mm（Suitable for bridge shell grinding process） |
Maximum rotation diameter | φ1200mm（Suitable for bridge shell grinding process） |
Maximum grinding diameter | φ500mm |
Minimum grinding diameter | φ50mm |
Minimum grinding length | 1500mm（Workpiece length -2 times the axial length of the grinding area） |
Maximum Top Distance | ≥3000mm |
Maximum length of workpiece | 3000mm |
Minimum horizontal feed rate of pallet | 0.001mm |
Minimum longitudinal feed rate of pallet | 0.001mm |
X-axis feed rate | 0.05-5000mm/min |
Z-axis feed rate | 0.1-5000mm/min |
Positioning accuracy（GB/T4685-2007） | X axis ≤0.013mm 0.008 Z axis ≤0.025mm 0.015 |
Repeatability（GB/T4685-2007、HDCNC standard） | X axis≤0.006mm 0.005 Z axis≤0.013mm 0.008 |
Grinding wheel specifications（max） | Φ900（/750）mm×300mm(max)×Φ305mm |
Grinding wheel motor power | 30KW |
Workpiece rotate speed | 15~150rpm(Reserved parking positioning function for bridge shell) |
Grinding wheel linear velocity | ≤45m/s |
Maximum workpiece quality (axle) | 1000kg |
Maximum load-bearing capacity (including fixtures and bridge shells) | ≥800Kg |
Headstock Top | Mohs No. 6 |
Headstock travel | 100mm |
Tail rack top | Mohs No. 6 |
Tailstock sleeve travel | 70mm |
三、Machine tool accuracy
1.1 Position accuracy of CNC axis：
X axis： positioning accuracy 0.012㎜
repeatability 0.005㎜
Z axis： positioning accuracy 0.015㎜
repeatability 0.008㎜
1.2 Work accuracy (bridge shell, standard specimen)：
Item (Standard Grinding Rod) | Value |
Roundness | 0.005mm（Meet the requirements of the bridge shell/axle drawings） |
Consistency of longitudinal section diameter | 0.008/1000mm（Meet the requirements of the bridge shell/axle drawings） |
Surface roughness Ra | Cylindrical 0.4μm ；end face 0.8um; arc 0.8um |
Note: Meet the conventional machining accuracy requirements for bridge shells and axle parts in China, namely: machining workpiece roundness ≤ 0.005mm; Same side bounce ≤ 0.015mm; Bounce on both sides ≤ 0.03mm | |
Processing case
Gear industry
Car industry
