SJR Machinery Co., Ltd.
CNC Centerless Grinding Machine
Salient Feature:
1.The bearing of grinding wheel spindle is four plates dynamic tiltable ball bearing bush, with high precision.
2.The bearing of regulating wheel spindle adopts double support & four plates dynamic tiltable ball bearing bush, with high precision
3.The feeding system equipped servo motor with high precision planetary gear reducer, feeding through coupling driving ball-screw.
4.AC frequency converter is used for regulating wheel step-less speed control.
5.The grinding wheel dresser driven by servo motor and ball screw, dressing any steps without any gauge finder. While regulating wheel dresser driven by gear motor and ball screw, step-less speed control, and good performance of low speed moving.
6.The machine operated by 10’ touch screen, auto plunge feeding, load, speed, time and steps can be adjusted.
7.Equipped SIEMENS CNC electrical system
Main Application:
The grinder is mainly used for through-feed grinding of cylindrical surface and ring-type parts, as well as for plunge-cut grinding of various stepped, cones that the conicity less than 1:20 .
|
Plunge feed |
|
|
(1)Grinding diameter |
5-60mm |
|
(2)Grinding length |
195mm |
|
Thru-feed |
|
|
(1)Grinding diameter |
5-60mm |
|
(2)Grinding length |
250mm |
|
Grinding wheel specification |
P500×200×305mm |
|
Grinding wheel specification |
PSA350×200×127mm |
|
Grinding wheel speed |
1318r/min |
|
Regulating wheel speed |
10～200 r/min |
|
Swiveling angle of regulating wheel |
|
|
(1)vertical |
-1°～+5° |
|
(2)horizontal |
0°～+5° |
|
Feeding Amount of Grinding Wheel |
0.001mm |
|
Feeding Amount of Plunge Grinding |
100mm |
|
Min Feeding Amount of Dresser |
0.001mm |
|
Height from centerline of ri.wheel & reg.wheel to workrest |
250mm |
|
Power |
17.96KW |
|
(1)Grinding wheel motor |
15KW |
|
(2)Regulating wheel motor |
1.5KW |
|
(3)Hydraulic pump motor |
1.1KW |
|
(4)Lubricant pump motor |
0.09KW |
|
(5)Coolant Pump Motor |
0.09KW |
|
(6)Magnetic Coolant Separator Motor |
0.18KW |
|
Overall dimensions (L*W*H) |
2050×1680×1380mm |
|
Weight |
About 3200Kg |
|
Work Accuracy(standard bars) |
|
|
(1)Roundness |
0.001 |
|
(2)Cylindricity |
0.002 |
|
(3)Surface Roughness |
Ra0.16 μm |
|
Name |
Specification |
QTY |
Unit |
Supplier |
|
Siemens CNC |
808D |
1 |
set |
Siemens, Germany |
|
Servo Motor |
|
3 |
sets |
Siemens, Germany |
|
HMI |
|
1 |
set |
Siemens, Germany |
|
Ball Screw |
|
4 |
sets |
Nanjing Technical Equipment Manufacture Co., LTD, China |
|
Inverter of Regulating Wheel |
1.5KW |
1 |
piece |
HUICHUAN, China |
|
Converter AC Motor of Regulating Wheel |
Y2 1.5KW |
1 |
piece |
Wuxi, China |
|
Motor of Grinding Wheel |
Y2 15KW |
1 |
piece |
Wuxi, China |
|
Low Voltage Device |
|
1 |
set |
Zhengtai, China |
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