The MPRG series high-precision surface grinding machine can achieve the forefront technology of today's grinding machine products in both design concepts and manufacturing processes. High precision, high rigidity, and high efficiency are the basic characteristics of this grinder, achieving a perfect combination of performance and efficiency. Due to the excellent performance and flexible design of machine tools, they can be widely used in various industries such as semiconductors, aviation, medical, and core components of robots.
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MPRG7360NC
HDCNC
一、 Purpose and structural characteristics of machine tools
1、Equipped with a newly developed high rigidity hydraulic pressure rotating worktable, it can withstand eccentric and high centrifugal force machining. Driven by a servo motor and a reduction mechanism, the worktable is driven by a multi wedge belt and multi wedge pulley, with a speed adjustable between 20-150r/min.
2、The grinding head body is a box structure, and the spindle adopts a self-made high-precision dynamic pressure spindle with a sleeve type structure installed. The spindle motor is directly connected to the spindle with an elastic coupling, which has excellent characteristics such as high precision, high rigidity, high seismic resistance, high bearing capacity, and high service life. The spindle rotation accuracy can easily reach within 1 μ m, perfectly achieving heavy cutting efficiency and mirror level machining performance.
3、The bed base adopts an integrated cast iron design, which not only increases the structural strength, makes the center of gravity of the machine more stable, but also provides the best support and ensures the load-bearing rigidity of the machine. The oversized bed design ensures that the machine tool is fully shock resistant and absorbent, ensuring high rigidity and extending the service life of the machine.
4、The optimal span design of the X-axistrack provides excellent support for the moving column, perfectly achieving high positioning accuracy and stability during the grinding process. Track design in non processing areas can completely prevent cutting water from entering and contaminating, and can maintain the service life of precision parts such as screws, wire tracks, and optical rulers.
5、The circular grinding machine adopts a door shaped structure design, which has the advantage of better structural rigidity than a single column type. The spindle head adopts a triangular span design, which has excellent resistance to downward pressure grinding reaction force and relatively improved stability. Compared with other factories' thin or slender spindle head designs, it has a significant differentiation. And the Z-axis track surface is designed to be equally high as the worktable, which further improves the accuracy of forward and backward movement and reduces the disadvantages of tilting or deformation.
6、X and Z-axis is equipped with high-precision roller type linear guides, which have ultra-high positioning accuracy, low wear, and can maintain accuracy for a long time. Compared with ball type linear guides, it adds high rigidity and high load capacity characteristics.
7、The grinding wheel spindle is equipped with high-efficiency, zero backlash, high rigidity, and high lead precision ball screws on both the Z-axis and the X-axis, which is the specific implementation of high-precision machining.
8、The vertical axis is equipped with a fully enclosed high-precision grating ruler to ensure feed accuracy and positioning accuracy. In addition, the high damping characteristics of the hydrostatic pressure spindle can absorb grinding kinetic energy, complementing each other to achieve high-precision grinding performance.
9、Equipped with Fanuc TF Plus CNC system, graphical dialogue human-machine interaction interface (HMI), visual applications allow operators to intuitively set parameters, greatly reducing the time for program setting and adjustment, and effectively reducing the incidence of operator setting errors, achieving rapid communication and thereby improving equipment utilization.
一、 Main technical parameters of the machine tool
Item | Unit | Specification | |||
Capacity | Electromagnetic suction cup diameter | mm | ∅630 | ||
Effective diameter of electromagnetic suction cup | mm | ∅600 | |||
Maximum travel inside the worktable protective cover | mm | ∅750 | |||
The distance from the surface of the worktable to the bottom of the grinding wheel | Use a ∅ 355mm grinding wheel | mm | -60～250 | ||
The weight of the workpiece can be placed on the electromagnetic suction cup | kg | 150 | |||
Worktable | Worktable rotation speed (infinitely variable) | rpm | 20～150 | ||
The angle at which the worktable can tilt | deg | ±5 | |||
Grinding wheel axis front and rear feed (X) axis | Drive equipment | - | Servo-drive | ||
Forward and backward movement amount | mm | 450 | |||
Feed rate during operation | Setting Range | m/min | 200～2400 | ||
Manual pulse feed | 1 circle feed rate（X1/X10/X100） | mm | 0.01/0.1/1 | ||
1 scale feed rate（X1/X10/X100） | mm | 0.001/0.001/0.01 | |||
Grinding wheel axis up and down feed (Z) axis | Drive equipment | - | Servo-drive | ||
Up and down movement amount | mm | 310 | |||
Feed rate during operation | Setting Range | m/min | 50～1000 | ||
Automatic micro feed rate | Setting Range | mm | 0.0001-0.1 | ||
Manual pulse feed | 1 circle feed rate（X1/X10/X100） | mm | 0.01/0.1/1 | ||
1 scale feed rate（X1/X10/X100） | mm | 0.0001/0.001/0.01 | |||
Grinding wheel | OD×W×ID | mm | ∅355×38×∅127 | ||
Select speed (variable frequency control) | rpm | 500～1800 | |||
Motor | Used for grinding wheel spindle | KW | 7.5 | ||
Drive for rotating worktable | KW | 2.5KW/20N.M | |||
Up and down feed (AC servo motor) | KW | 2.5KW/20N.M（band-type brake） | |||
Forward and backward feed (AC servo motor) | KW | 2.5KW/20N.M | |||
Coolant | Used for cutting fluid | KW | 0.125 | ||
Floor area | Length×Width×Height | mm | 2600×1700×2300 | ||
Machine weight | This machine | kg | 4000 | ||
Machine tool accuracy：
After grinding with a circular table grinder, the following standard accuracy requirements must be met: (different grinding wheels are used for workpieces of different materials)
No. | Model | Workpiece | Flatness | Roughness |
1 | MPRG7360NC | Standard specimen | ≤0.005mm | ≤Ra0.2 |
Note: Coarse grinding (generally with a grinding amount of 0.02~0.05mm); Fine grinding (generally with a grinding amount of 0.005~0.015mm)
四、Grinding application
Surface grinding | Step grinding | Mid convex grinding | Mid concave grinding | Composite grinding |
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一、 Purpose and structural characteristics of machine tools
1、Equipped with a newly developed high rigidity hydraulic pressure rotating worktable, it can withstand eccentric and high centrifugal force machining. Driven by a servo motor and a reduction mechanism, the worktable is driven by a multi wedge belt and multi wedge pulley, with a speed adjustable between 20-150r/min.
2、The grinding head body is a box structure, and the spindle adopts a self-made high-precision dynamic pressure spindle with a sleeve type structure installed. The spindle motor is directly connected to the spindle with an elastic coupling, which has excellent characteristics such as high precision, high rigidity, high seismic resistance, high bearing capacity, and high service life. The spindle rotation accuracy can easily reach within 1 μ m, perfectly achieving heavy cutting efficiency and mirror level machining performance.
3、The bed base adopts an integrated cast iron design, which not only increases the structural strength, makes the center of gravity of the machine more stable, but also provides the best support and ensures the load-bearing rigidity of the machine. The oversized bed design ensures that the machine tool is fully shock resistant and absorbent, ensuring high rigidity and extending the service life of the machine.
4、The optimal span design of the X-axistrack provides excellent support for the moving column, perfectly achieving high positioning accuracy and stability during the grinding process. Track design in non processing areas can completely prevent cutting water from entering and contaminating, and can maintain the service life of precision parts such as screws, wire tracks, and optical rulers.
5、The circular grinding machine adopts a door shaped structure design, which has the advantage of better structural rigidity than a single column type. The spindle head adopts a triangular span design, which has excellent resistance to downward pressure grinding reaction force and relatively improved stability. Compared with other factories' thin or slender spindle head designs, it has a significant differentiation. And the Z-axis track surface is designed to be equally high as the worktable, which further improves the accuracy of forward and backward movement and reduces the disadvantages of tilting or deformation.
6、X and Z-axis is equipped with high-precision roller type linear guides, which have ultra-high positioning accuracy, low wear, and can maintain accuracy for a long time. Compared with ball type linear guides, it adds high rigidity and high load capacity characteristics.
7、The grinding wheel spindle is equipped with high-efficiency, zero backlash, high rigidity, and high lead precision ball screws on both the Z-axis and the X-axis, which is the specific implementation of high-precision machining.
8、The vertical axis is equipped with a fully enclosed high-precision grating ruler to ensure feed accuracy and positioning accuracy. In addition, the high damping characteristics of the hydrostatic pressure spindle can absorb grinding kinetic energy, complementing each other to achieve high-precision grinding performance.
9、Equipped with Fanuc TF Plus CNC system, graphical dialogue human-machine interaction interface (HMI), visual applications allow operators to intuitively set parameters, greatly reducing the time for program setting and adjustment, and effectively reducing the incidence of operator setting errors, achieving rapid communication and thereby improving equipment utilization.
一、 Main technical parameters of the machine tool
Item | Unit | Specification | |||
Capacity | Electromagnetic suction cup diameter | mm | ∅630 | ||
Effective diameter of electromagnetic suction cup | mm | ∅600 | |||
Maximum travel inside the worktable protective cover | mm | ∅750 | |||
The distance from the surface of the worktable to the bottom of the grinding wheel | Use a ∅ 355mm grinding wheel | mm | -60～250 | ||
The weight of the workpiece can be placed on the electromagnetic suction cup | kg | 150 | |||
Worktable | Worktable rotation speed (infinitely variable) | rpm | 20～150 | ||
The angle at which the worktable can tilt | deg | ±5 | |||
Grinding wheel axis front and rear feed (X) axis | Drive equipment | - | Servo-drive | ||
Forward and backward movement amount | mm | 450 | |||
Feed rate during operation | Setting Range | m/min | 200～2400 | ||
Manual pulse feed | 1 circle feed rate（X1/X10/X100） | mm | 0.01/0.1/1 | ||
1 scale feed rate（X1/X10/X100） | mm | 0.001/0.001/0.01 | |||
Grinding wheel axis up and down feed (Z) axis | Drive equipment | - | Servo-drive | ||
Up and down movement amount | mm | 310 | |||
Feed rate during operation | Setting Range | m/min | 50～1000 | ||
Automatic micro feed rate | Setting Range | mm | 0.0001-0.1 | ||
Manual pulse feed | 1 circle feed rate（X1/X10/X100） | mm | 0.01/0.1/1 | ||
1 scale feed rate（X1/X10/X100） | mm | 0.0001/0.001/0.01 | |||
Grinding wheel | OD×W×ID | mm | ∅355×38×∅127 | ||
Select speed (variable frequency control) | rpm | 500～1800 | |||
Motor | Used for grinding wheel spindle | KW | 7.5 | ||
Drive for rotating worktable | KW | 2.5KW/20N.M | |||
Up and down feed (AC servo motor) | KW | 2.5KW/20N.M（band-type brake） | |||
Forward and backward feed (AC servo motor) | KW | 2.5KW/20N.M | |||
Coolant | Used for cutting fluid | KW | 0.125 | ||
Floor area | Length×Width×Height | mm | 2600×1700×2300 | ||
Machine weight | This machine | kg | 4000 | ||
Machine tool accuracy：
After grinding with a circular table grinder, the following standard accuracy requirements must be met: (different grinding wheels are used for workpieces of different materials)
No. | Model | Workpiece | Flatness | Roughness |
1 | MPRG7360NC | Standard specimen | ≤0.005mm | ≤Ra0.2 |
Note: Coarse grinding (generally with a grinding amount of 0.02~0.05mm); Fine grinding (generally with a grinding amount of 0.005~0.015mm)
四、Grinding application
Surface grinding | Step grinding | Mid convex grinding | Mid concave grinding | Composite grinding |
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