Centerless Grinding Machine-Fx-18CNC

• After-sales Service: 1 Year
• Warranty: 1 Year
• Type: Centerless Grinding Machine
• Processing Object: Thread
• Abrasives: Grinding Wheel
• Controlling Mode: CNC
• Model NO.: FX-18CNC
• Automatic Grade: Automatic
• Cylindrical Grinder Type: Plunge Cylindrical Grinder
• Precision: High Precision
• Certification: CE
• Condition: New
• Processing Range of Standard Models (Dia: Φ 1-60mm
• Grinding Wheel Size (Od * W * Od): 455*205*228.6mm
• Adjusting Wheel Size (Od * W * Od): 255*205*111.2mm
• Grinding Wheel Speed: 1500rpm
• Adjusting Wheel Speed: 0-250rpm
• The Grinding Wheel Drives The Motor: 11.5kw
• Adjusting Wheel Servo Motor: 3.0kw
• Transport Package: Wooden Box
• Trademark: Hotman
• Origin: China
• Production Capacity: 500

Product Description

1. Technical specification:

Project	Unit	Model: FX-18CNC-1
Processing range of standard models (diameter)	mm	Φ  1-60
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	RM	1500
Adjusting wheel speed	RPM	0-250
The grinding wheel drives the motor	KW	11.5
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/ RPM 0.001/ scale
Worktable feed hand wheel	mm	9.0/ RPM 0.10/ Scale
Worktable micro adjustment hand wheel	mm	0.2/ RPM 0.001/ Scale
Trim feed hand wheel	mm	2.0/ RPM 0.001/ Scale
Adjust wheel tilt Angle	Degree	+6 ° ~ -5 °
Adjust the rotation Angle	Degree	±6 °
Machine  size (length * width * height)	mm	2350 × 1960 × 1550
Packing size	mm	2900 ×2400 × 1850
Mechanical weight	KG	2850
Packing weight	KG	3000

2. Standard accuracy of machine tool:
    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	≤Ra0.1
2.	Entry grinding(press grinding)	Standard sample	≤0.002mm	≤Ra0.2

   Note: Rough grinding (generally grinding amount 0.05~0.20mm); 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
     Adjusting wheel spindle drive adopts servo motor, speed control 0-250rpm(digital control) can be arbitrarily set speed, adjust to the best linear speed, when adjusting wheel diameter changes still can maintain the same linear 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 is the same oil pump, external tank, easy cleaning and oil change, main shaft circulating oil through two oil filter devices and equipped with pressure controller, to ensure the life of the spindle. Cooling adopts double circuit cooling system to ensure constant temperature of main shaft oil.
(5) Circuit system
     The circuit of the whole equipment adopts Beijing Schneide circuit system, beautiful and durable, good operation. Increase the height of the electric box, and equipped with air conditioning cooling device, convenient operation at the same time, more conducive to the circuit system heat dissipation.
4. Installation environment requirement:

1	Supply voltage	380V
2	Total installed power	16KW
3	Operating ambient temperature	5-40ºC
4	Grinding fluid filtration method	Magnet filtration
5	Cooling water pump	0.25KW
6	Cooling water tank	220L

5.Regulating wheel dressing part (two-axis servo drive):
Ball screw servo motor is used to feed the reciprocating motion and radial feed cutter of dresser. The feed guide is a linear guide with high precision. The servo has the function of correction and compensation, and the grinding wheel has high forming precision and fast dressing speed.
6.Two-axis roller automatic  dressing (two-axis servo drive):
7.Double axis diamond pen automatic dressing (double axis servo drive):
 The reciprocating motion of dresser and radial feed are fed by ball screw servo motor, and the feed guide can be shoveling hard rail or high-precision linear guide. The servo has the function of correction and compensation.

8.Strong grinding force/long service life:

1. Cone runout less than 0.002, spindle axial movement less than 0.002;
2.The maximum spindle speed is 1500 RPM;
3. Oil supply pressure 2.5Mpa, hydraulic medium No.5. High rotation precision, excellent shock absorption, can bear super heavy workpiece, super grinding force.
4. Pure liquid friction, low friction resistance, low power consumption, high  transmission efficiency.
5. The wear caused by direct contact between metals will not occur during normal  operation and frequent startup. The accuracy is good and the life is long.
6.Due to the buoyancy of the axle diameter is realized by the pressure of external oil, it has high bearing capacity under various relative motion speeds, and the change of speed has little influence on the stiffness of the oil film.
7.The lubricating oil layer has good vibration resistance, and the shaft runs smoothly.
8.The oil film has the function of compensating error, reducing the influence of the shaft and bearing manufacturing error, and the shaft rotation precision is high.