Gantry surface grinder P1020
1.Technical parameter number:
| NO. |
Item |
UNIT |
Model: P1020 |
| 1 |
Workbench area |
mm |
1000×2000 |
| 2 |
Maximum grinding area |
mm |
1400×2300 |
| 3 |
Maximum load of the workbench |
Kg |
5000 |
| 4 |
Distance from table to spindle center |
mm |
250-1250 |
| 5 |
Workbench speed |
m/min |
1-25 |
| 6 |
Automatic intermittent feed |
mm /feed |
0.1-35 |
| 7 |
Front and rear handwheels each scale |
mm |
0.001 |
| 8 |
Each revolution of the front and rear handwheels |
mm |
0.1/1/10 |
| 9 |
Rapid movement |
mm /min |
3000 |
| 10 |
Up and down automatic feed |
mm /feed |
0.001-0.099 |
| 11 |
Each scale of the upper and lower handwheels |
mm |
0.001 |
| 12 |
Hand wheel up and down each scale |
mm |
0.20 |
| 13 |
Rapid up and down movement |
mm /min |
240 |
| 14 |
Spindle motor |
kw |
18.5 |
| 15 |
Grinding wheel speed 50HZ |
rpm |
1500 |
| 16 |
Grinding wheel speed |
mm |
Φ500×50-100×Φ203 |
| 17 |
Front and rear motor |
KW |
1.8 |
| 18 |
Upper and lower motor |
KW |
1.5 |
| 19 |
Lubricating oil tank motor |
KW |
1/2 |
| 20 |
Lubricating pump |
KW |
1/4 |
| 21 |
Cooling water pump |
KW |
1/4 |
| 22 |
Net weight (approximate) |
Kg |
21500 |
| 23 |
Gross weight (approximate) |
Kg |
22500 |
| 24 |
Package size (L × W × H) |
mm |
5500×3000×3100 |
2.Description of the main features of the equipment:
1) The machine adopts integrated double V-shaped guide rail design structure, and the castings are made of high-grade cast iron FC-35.
2)
The front end of the main shaft adopts imported P4 angular roller bearings; At the same time,with the FAG-NN3015K bearing, the rigidity and cutting force of the main shaft are greatly enhanced, while using V3, low vibration, large torque motor, long service life, low energy consumption, high precision, easy maintenance, good wear resistance.
3) The high precision lubrication system used in the machine makes the machine run more stable and can withstand heavy cutting. The precision ball screw and the precision feed system make the grinding processing efficiency greatly improved.
4) Standard configuration computer servo automatic feed system: automatic feed can be set from 0.001mm~0.999mm, grinding program is divided into rough grinding. Fine grinding and sparkless grinding methods. Its automatic minimum feed is 0.001mm and can be equipped with MPG electronic hand wheel.
5) The filter device can choose magnetic filter device or paper tape filter device, which can completely effectively filter and collect mineral dust, and also ensure that the chip liquid is in a pure state for a long time, so as to improve the grinding and cooling effect of the workpiece.
3.Machine accuracy and acceptance standards:
1) The main structural design concept of the machine is under the requirement of the two key functions of the door post width 2000mm and the effective grinding workpiece height 700 (1100) mm, and must have both high static rigidity and dynamic grinding performance, so the finite element analysis software (ANSYS) is used as a tool, through reasonable model assumptions to improve the analysis efficiency of the whole machine. Supplemented by systematic and reliable design methods, the strength design of the casting structure and the rigidity design of the feed system have been carefully simulated and compared for many times (Figure 1) to determine the best configuration (Figure 2).
Figure 1 Static rigidity analysis of the whole machine Figure 2 Model of gantry grinding machine
2)
All the grinding machines developed by our company have been verified by comparison of static rigidity measurement and CAE analysis to verify the correctness of the finite element model. Figure 3 shows the CAE model developed by our company and the actual verification process. In the figure on the right, a fixed force is applied to a hand-held Load cell and the deformation of each shaft is measured with a dial gauge to calculate its rigidity value.
Figure 3 Verification process of machine rigidity measurement and CAE analysis
3)Beam structure design:
The beam of the grinder needs to bear two feed systems and their slides at the same time, and must withstand grinding forces, so to achieve dimensional accuracy, the bending rigidity of the beam is very high. In addition, in order to increase the resonant frequency of the whole machine and reduce the casting cost, the quality of the beam must be controlled. Therefore, the box grid rib, which has the characteristics of supporting rigidity and easy adjustment of structural parameters, is used as the design configuration element, and the simulation results of equivalent stress of finite elements are used as the theoretical reference basis (FIG. 4). On the one hand, the density and thickness of reinforcing ribs of the main structure are increased to strengthen the main stressed structure area. On the other hand, topological optimization is used to reduce the density and thickness of the structural ribs in the secondary stress structure area, so as to achieve the beam structure with light weight and high rigidity.
Figure 4 Equivalent stress analysis of beam
4)Table structure
The high rigidity table structure and double V slide design of the machine make the maximum workpiece load up to 5 tons, as shown in Figure 5. The working range of the table is 2500mm x 4300mm, which responds to the trend of long and high-precision machining of large machine parts. T-slot specifications can be designed and manufactured according to customer requirements.
Figure 5 Local workbench
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