1. Technical specification:
| Project |
Unit |
Model:FX-18S |
| Processing range of standard models (diameter) |
mm |
Φ 1-60(Customization 100) |
| Grinding wheel size (OD * W * OD) |
mm |
Φ455*205*Φ228.6 |
| Adjusting wheel size (OD * W * OD) |
mm |
Φ255*205*Φ111.2 |
| Grinding wheel speed |
RPM |
1500 |
| Adjusting wheel speed |
RPM |
0-250 |
| The grinding wheel drives the motor |
KW |
11.5/18.5 |
| Adjusting wheel servo motor |
KW |
3.0 |
| The hydraulic pump drives the motor |
KW |
0.75 |
| The cooling pump drives the motor |
KW |
0.25 |
| Adjusting wheel feed hand wheel |
mm |
3.5/ RPM 0.05/ scale |
| Adjusting wheel fine tuning hand wheel |
mm |
0.1/ to 0.001/ scale |
| Bench feed hand wheel |
mm |
9.0/ RPM 0.10/ scale |
| Table micro adjustment hand wheel |
mm |
0.2/ turn 0.001/ scale |
| Trim feed hand wheel |
mm |
2.0/ turn 0.01/ scale |
| Adjust wheel tilt Angle |
Degree |
+6°~-5° |
| Adjust the rotation Angle |
Degree |
±6° |
| Mechanical dimension |
mm |
2350×1960×1550 |
| Packing size |
mm |
2900×2400×1850 |
| Mechanical weight |
KG |
2850 |
| Packing weight |
KG |
3000 |
2.Machine tool accuracy:
After the centerless grinder grinding (through grinding) of Hotman Company, the following standard accuracy requirements must be met: (Different grinding wheels should be used for different materials).
| No. |
Grinding mode |
Work piece size (MM) |
Flatness |
parallelism |
| 1. |
Through grinding |
Standard sample |
≤0.001mm |
≤Ra0.2 |
| 2. |
Entry grinding(press grinding) |
Standard sample |
≤0.002mm |
≤Ra0.2 |
Note: Rough grinding (generally grinding amount 0.05~0.15mm); Fine grinding (generally 0.005~0.02mm)
3.Device description:
(1) Ontology
The body and components are cast with high-grade cast iron FC-30, which is artificially normalized heat treatment and then subjected to natural aging treatment. Component processing adopts YASDA, MITSUI SEIKI, TOSHIBA, ELB and other world-class equipment for one-time clamping processing, precision size up to micron level, to ensure the high precision of the basic components of the equipment.
(2) Spindle system
Using Taiwan original spindle, SNCM-21H alloy steel, after tempering, carburizing heat
treatment and then computer controlled cryogenic treatment, its surface hardness up to HRC-62° above, single effective hardening layer up to 1.5mm above, the main shaft using dynamic pressure oil film spindle.
(3) Adjust the wheel drive system
The adjusting wheel spindle is driven by Taiwan Delta endless variable speed motor, FX-18S speed control 0-250rpm(digital control) can set the speed arbitrarily, adjust to the best line speed, when the adjusting wheel diameter changes can still maintain the same line speed, grinding out the best product.
The servo motor is cleverly designed and installed on the adjusting wheel box and directly
driven by the synchronous belt. It can hit the tilt Angle with the adjusting wheel at the same time during grinding to ensure that the two belt wheels are always parallel. It overcomes many adverse effects caused by inertia loss and chain Angle caused by chain multi-segment transmission of old centerless grinder. And eliminates the need to constantly change chains and zipper springs.
(4) Main shaft circulating oil system
Spindle automatic lubricating circulating oil (senior spindle oil 10#) and oil pressure dressing device for the same oil pump, external tank, easy to clean oil change, main Shaft circulating oil is filtered through two oil filters and equipped with pressure controllers to ensure spindle life. Cooling adopts double circuit cooling system to ensure constant temperature of spindle oil.
(5) Circuit system
The circuit of the whole equipment adopts Japan Fuji circuit system, beautiful and durable, good operation. Increase the height of the electric box, convenient operation at the same time, more conducive to the circuit system heat dissipation.
4. Base:
The body and components are made of honeycomb advanced cast iron. After artificial normalization heat treatment, after more than six months of natural aging treatment, reasonable mechanical design and excellent material to ensure never deformation and strong wear resistance in the use process. Component processing adopts YASDA, MITSUI SEIKI, TOSHIBA, ELB and other world-class equipment for one-time clamping processing, precision size up to micron level, to ensure the high precision of the basic components of the equipment.
5. Adjust the wheel drive system:
The spindle of the adjusting wheel is directly driven by the servo motor synchronous belt. When the outside diameter changes, the speed can be adjusted to achieve the best linear speed to ensure the precision and finish of the workpiece. The tilt Angle of the pulley can be adjusted properly when grinding, so that the two pulley always keep parallel. It overcomes many adverse effects caused by inertia superposition caused by chain multi-segment transmission of the old centerless grinder, and does not need to change the chain and zipper spring often.
6.Feed slide:
The use of advanced casting materials, eliminate internal stress, high strength, low deformation affected by temperature difference.
The contact surface through the precision manual shovel flowers, the slide through the lubrication system fully smooth, with strong wear resistance.
Stable horizontal movement accuracy, grinding machining, feeding accuracy can reach μm level.
7.Precision lead screw:
Feed screw with ball screw, high positioning accuracy. Excellent friction characteristics and reversible, can reach μm class positioning accuracy.
Movement after sufficient lubrication, smooth movement. The contact surface of the track is scraped by manual, the movement resistance is small, and the accuracy of the machine can be maintained for a long time.
8.Precision grinding wheel spindle and alloy bearing:
Grinding wheel spindle seat
1) The main shaft adopts Japan advanced SNCM-21H alloy steel, after tempering, carburizing heat treatment and then by computer controlled cryogenic treatment, the surface hardness reaches HRC-62° above, single effective hardened layer more than 1.5mm, after many times of precision grinding, high precision, good rigidity.
2) The automatic lubricating circulation system adopts the spindle oil of high spindle, which is treated by the tank constant temperature, filtered by two oil filter devices and equipped with pressure controller, so that the spindle can work under relatively stable oil pressure to ensure the life and accuracy of the spindle.
9.
Precision adjustment wheel spindle and alloy bearing:
Adjusting wheel spindle seat
1) The main shaft adopts Japan advanced SNCM-21H alloy steel, after tempering, carburizing heat treatment and then by computer controlled cryogenic treatment, the surface hardness reaches HRC-62° above, single effective hardened layer more than 1.5mm, after many times of precision grinding, high precision, strong rigidity.
2) The spindle rotation runout is controlled within 2μm, the spindle is directly driven by the servo motor, the speed can be set arbitrarily, and the grinding processing can be adjusted to the best linear speed, grinding out high-precision products.
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