Yuhuan CNC Machine Tool Co., Ltd.

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YHJMKG2880

High precision CNC compound vertical grinding machine

The target market of this machine tool is the domestic equipment manufacturing industry, machinery processing industry, high-precision processing industry and other products with high precision and surface quality requirements, which can realize one-time clamping processing of the inner and outer contours, inner holes, outer circles, end faces, etc. of discs, rings and sets. The machining accuracy grade is IT3 ~ IT2 grade; the surface quality is controlled at Ra≤ 0.2; the shape and position error is controlled at ≤ 0.002.

Keywords

Precision grinding, intelligent manufacturing technology, integrated solutions

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Typical Machining Parts

Typical Machining Parts


Bearing seat	wind power gear	triangular rotor

Equipment Highlights

Equipment Highlights

1. X-axis, C- axis, Z-axis and B- axis can realize two-axis to four-axis linkage, and can realize the processing of inner and outer contours, conical surfaces, end surfaces, etc. of workpieces.

2. Equipped with 3 synchronous built-in motorized spindles (SP1, SP2, SP3), the station can be converted, the grinding head covers a wide range of rotation speed and rigidity, and effectively improves the processing efficiency and manufacturability.

3. The B- axis can realize high-precision and arbitrary angle positioning with repeated positioning accuracy of 2.5 ", and can realize arbitrary cone surface processing, thus avoiding the deficiency of linkage interpolation processing cone surface and reducing grinding wheel loss.

4. The X-axis and C- axis are hydrostatic methods, which can effectively solve the unstable transmission of traditional guide rails and the phenomenon of low-speed crawling caused by friction while ensuring high precision and high rigidity (the friction coefficient of hydrostatic guide rails is only about 0.005, and that of linear guide rails is generally 0.15).

5. The X-axis adopts direct drive motor without reverse clearance, which can completely solve the problems such as over-quadrant protrusion.

6. SP1, SP2 and SP3 are equipped with online dynamic balancing and AE devices to effectively solve the grinding vibration and abnormal collision caused by unbalanced grinding wheel, and improve the grinding surface quality and the safety of machine tools.

7. The B- axis is equipped with a clamping system, and the rated locking torque is as high as 2900N.m to ensure the rigidity of the grinding wheel when grinding at a fixed angle.

8. On-line automatic measurement function, which can realize automatic on-line measurement and automatic tool alignment; the probe calibration device is close to the detection position, and the measurement accuracy is high.

9. Equipped with diamond roller dressing and diamond pen dressing, two sand dressing methods can realize grinding wheel plane and surface dressing.

10. Human-computer interaction software with 3D simulation and full-function CNC program package, including functions such as end face grinding, inner circle (inner contour) grinding, outer circle (outer contour) grinding, grinding wheel modification, online measurement and calibration.

Technical parameters

Technical parameters

Project	Parameters
Table size	Ф800 mm
Maximum swing diameter	Ф1000mm
Minimum grinding inner diameter	Ф28 mm
Max. grinding height	650 mm
Maximum load of workbench	1500 Kg
Table speed (stepless)	0.01-100 rpm
Maximum spindle speed and interface (internal and external grinding head)	8000rpm、 HSK63-C(18000rpm optional accessory)
Maximum spindle speed and interface (surface grinding head)	4500rpm、N56
Grinding wheel diameter (inner and outer grinding head)	Ф25～Ф300mm
Grinding wheel diameter (surface grinding head)	F400
Spindle power (inner and outer cylindrical grinding head)	32kW
Spindle power (surface grinding head)	37kW
Spindle runout	Radial and end face ≤ 0.001

Project	Parameters
Table runout	Radial and end face ≤ 0.001
X-axis (lateral movement)	1700 mm
Z-axis (vertical movement)	1340 mm
B- axis (rotation of grinding wheel carrier)	0～285°
X-axis moving speed (continuously variable speed)	0.010～10 m/min
Z-axis moving speed (continuously variable speed)	0.010～8 m/min
X and Z axis positioning accuracy and Repeated positioning accuracy	0.003mm， 0.002mm
C- axis positioning accuracy and repeated positioning accuracy	3 ″, 1.5 ″
B- axis positioning accuracy and repeated positioning accuracy	5 ″, 2.5 ″
The grinding head moves in the X-axis direction. Parallelism of rotating table surface	≤ 0.006mm/500mm
The grinding head moves along the Z-axis direction. Verticality of rotary table surface	≤ 0.003mm/500mm

High Precision CNC Vertical Universal Grinding Machine Series

Sr.	Model	Workstation diameter(mm)	Max. rotation diameter(mm)	Max. workpiece height (mm)	Max. workpiece weight(kg)
1	YHJMKG2835	ф350	ф3500	400	800
2	YHJMKG2860	ф3600	ф3750	500	1000
3	YHJMKG2880	ф3800	ф31000	650	1500
4	YHJMKG28100	ф31000	ф31200	650	2000
5	YHJMKG28125	ф31250	ф31500	650	3000
6	YHJMKG28160	ф31600	ф31850	850	5000
7	YHJMKG28200	ф32000	ф32300	1050	5000