Function introduction:
This machine tool is mainly used for finishing and semi-finishing non-circular pinholes for forged steel pistons(tapered holes, curved holes, hyperbolic holes). Equipped with double spindles arranged left and right , the one is for fine boring (the left spindle), the other is for semi-fine boring (the right spindle).
The fine boring spindle is the static-dynamic pressure spindle and equipped with precision micro-displacement servo boring device(a patented product of EPOCH NC), which completes non-circular piston pinholes (tapered holes, curved holes) surface machining under the condition of high-speed rotation of the spindle. The size of the pinhole can be fine-tuned by program, and the non-circular pinhole size and length can be adjusted by program.
SIEMENS 828D system is adopted, for which the programming is flexible and convenient, and the reliability is high.
Main technical parameters:
|
S/N |
Item |
Unit |
ETK2708A |
|
1 |
Outer diameter range of machined piston |
mm |
Φ80 ~ Φ200 |
|
2 |
Pinhole diameter range of the machined piston |
mm |
Φ30 ~Φ80 |
|
3 |
Fine boring spindle |
|
Static-dynamic Pressure Spindle |
|
4 |
Semi-fine boring spindle |
|
Bearing Spindle: A2-6 |
|
5 |
Fine boring Spindle Accuracy |
mm |
0.002 |
|
6 |
Semi-fine boring Spindle Accuracy |
mm |
0.003 |
|
7 |
Fine boring Spindle Speed (stepless speed regulation) |
rpm |
50~1500 |
|
8 |
Semi-fine boring Spindle Speed (stepless speed regulation) |
rpm |
50~1500 |
|
9 |
Maximum effective offset of the fine boring edge |
mm |
0.06 |
|
10 |
Processing roughness |
µm |
Ra0.63 |
|
11 |
Fine-boring straight hole roundness |
mm |
0.002 |
|
12 |
Fine-boring monoliteral pinhole straight-line cylindricity |
mm |
0.004 |
|
13 |
Machine (L×W×H) |
mm |
2900×1700×2450 |
|
14 |
Net weight of the machine |
kg |
5500 |
|
15 |
Overall power of the machine |
kW |
25 |