Vertical Combined Grinding Machine

As a core product of Shenyang Julang in the grinding machine field, VG series vertical compound grinding machines integrate multiple innovative highlights in technical design and core performance. Relying on exquisite manufacturing technology and strict quality control, they form unique technical advantages, perfectly matching the high standards and requirements of German-funded enterprises for precision processing equipment.

1. High-precision positioning and transmission system: The machine adopts a combination of high-precision ball screws and linear guides, matched with servo motor direct drive design, completely eliminating transmission clearance. The positioning accuracy of X/Z axes reaches ±0.003mm, and the repeat positioning accuracy is as low as ±0.002mm, ensuring stable positioning accuracy during long-term continuous operation and meeting the batch processing needs of precision parts. Meanwhile, the transmission system adopts a sealed protection design, effectively isolating dust and cutting fluid erosion, extending service life and reducing maintenance costs.

2. High-rigidity body structure: The body is made of high-strength cast iron, processed by resin sand casting, aging treatment and vibration aging process, effectively eliminating internal stress and reducing deformation, providing a solid structural foundation for high-precision grinding. The machine column adopts an integrated casting design with strong rigidity and excellent vibration resistance, which can effectively suppress vibration during grinding and avoid impact on processing accuracy, ensuring grinding surface quality.

3. Precision spindle system: The workpiece spindle adopts a hydrostatic servo spindle, with strict dynamic balance and precision calibration, axial and radial runout controlled within <0.0002mm. The grinding spindle is equipped with high-precision bearings with runout <0.001mm. Spindle speed supports stepless adjustment, suitable for grinding of different materials and precision requirements, achieving both high-speed precision grinding and low-speed heavy-duty grinding, balancing efficiency and accuracy.

4. Integrated compound grinding function: As a compound grinding machine, VG30 realizes integrated processing of internal/external cylindrical grinding, face grinding, step grinding and other processes, without frequent equipment or fixture replacement, greatly shortening processing flow and improving production efficiency. Equipped with an automatic wheel dressing device, it can monitor wheel wear in real time and complete dressing automatically, ensuring stable wheel accuracy, reducing manual intervention and operation difficulty.

5. Intelligent control system: Equipped with imported high-end CNC system, supporting parametric programming and graphical operation with simple interface and convenient operation. The system has functions such as fault self-diagnosis, accuracy compensation and real-time processing monitoring, feeding back processing status in real time, warning abnormalities in time to ensure stability and reliability; it also supports data networking for informatization management of production, adapting to modern intelligent manufacturing scenarios.

Vertical Compound / Follow-up Grinding Machine

Features: One-time clamping, multi-process compound, follow-up tracking, high precision, high efficiency.

Applicable industries: Bearing, wind power, automotive, hydraulic, aerospace, precision machinery, etc.

Machine Accuracy		Processing Accuracy
X/Z Positioning Accuracy	±0.003 mm	Dimensional Accuracy	±0.002 mm
X/Z Repeat Positioning Accuracy	±0.002mm	Roundness / Non-circular Profile	±0.001mm
Workpiece Spindle Runout (Axial/Radial)	＜0.0002mm	Internal/External Coaxiality	0.002～0.003 mm
Grinding Spindle Runout (Axial/Radial)	＜0.001mm	Surface Roughness	Ra: 0.2～0.4 μm

Technical Parameters

Category	Item	Unit	VG300	VG600	VG800	VG1200
Processing Range	Grinding Inner Diameter	mm	Φ20～300	Φ20～400	Φ20～500	Φ20～300
	Max. Grinding Outer Diameter	mm	～Φ350	～Φ610	～Φ8010	～Φ1210
	Max. Length of Inner Diameter Grinding	mm	200	200	325	325
	Max. Length of Outer Diameter Grinding	mm	Φ325	Φ325	Φ325	Φ325
	Max. Workpiece Height	mm	400	400	400	400
Travel	X-axis Travel	mm	1050	1250	1450	2450
	Z-axis Travel	mm	400	500/800	1070	1070
	Minimum Setting Unit	mm	0.0001	0.0001	0.0001	0.0001
Workpiece Spindle	Electromagnetic/Permanent Magnetic Chuck	mm	Φ300	Φ600	Φ800	Φ1200
	Spindle Speed	rpm	10～150	10～150	10～150	10～150
	Max. Workpiece Weight	Kg	100	100	100	100
Grinding Spindle	Spindle Power	Kw	15/18.5	18.5/25	30/37	30/37
	Spindle Speed	rpm	16000	15000	12000	12000
	Spindle Interface	-	HSK-A63	HSK-A63 HSK-A100	HSK-A100	HSK-A100
	Max. Grinding Wheel Diameter	mm	Φ20～200	Φ40～255	Φ50～305	Φ50～305
Tool Magazine	Structure Type	-	Umbrella Type	Umbrella Type	Umbrella Type	Umbrella Type
	Tool Selection Mode	-	Bidirectional Arbitrary	Bidirectional Arbitrary	Bidirectional Arbitrary	Bidirectional Arbitrary
	Max. Tool Magazine Capacity	pcs	6	6	6	6
Closed-loop Grating	Grating Scale Type	-	Absolute Grating Scale	Absolute Grating Scale	Absolute Grating Scale	Absolute Grating Scale
Closed-loop Grating	Resolution	μm	0.01	0.01	0.01	0.01
Accuracy	Positioning Accuracy (VID)	mm	±0.003	±0.003	±0.003	±0.003
	Repeat Positioning Accuracy (VID)	mm	±0.002	±0.002	±0.002	±0.002
	Processing Roundness	mm	≦0.0012	≦0.0012	≦0.0012	≦0.0012
	Processing Cylindricity	mm	≦0.002	≦0.002	≦0.002	≦0.002
	Processing Coaxiality	mm	≦0.002	≦0.002	≦0.002	≦0.002
	Processing Flatness	mm	≦0.002	≦0.002	≦0.002	≦0.002
	Grinding Surface Roughness	μm	≦Ra 0.32	≦Ra 0.32	≦Ra 0.32	≦Ra 0.32
Spindle Runout	Axial Runout (Root)	mm	0.001	0.001	0.001	0.001
Spindle Runout	Radial Runout (Root)	mm	0.001	0.001	0.001	0.001
Others	Machine Weight	Kg	12000	15000	18000	23000
Others	Footprint (L×W×H)	mm	2500×3630	3300×4100	3900×4200	4800×4900
Remark: 1. Hydrostatic spindle is optional for workpiece spindle and grinding spindle

Vertical Grinding Machine Configuration

PMSM Spindle (Germany INNA)	Hydrostatic Spindle	Worktable (Cross Roller Bearing)	Hydrostatic Rotary Table	Magnetic Chuck	Oil Mist Collector

X/Z Axis Grating Scale	Magnetic Separator + Paper Filter	Workpiece Measuring System	Tool Detection System	Diamond Wheel Dresser	Anti-fog Rotating Window

Diamond Wheel	CBN Wheel	Resin Wheel	Plated Wheel	Ceramic Wheel	Siemens Control System	Cutting Fluid Cooler

Application Fields


1. Disc Parts	Flange, end cover, pressure plate, clutch disc Machine chuck, turntable, indexing disc features	One-time grinding of inner hole, outer circle and end face, ultra-high coaxiality and perpendicularity
2. Sleeve / Cylinder Parts	Hydraulic cylinder sleeve, air cylinder sleeve, spindle sleeve Valve sleeve, shaft sleeve, bushing features	Mirror inner hole, precision outer circle, uniform wall thickness
3. Bearing Parts	Bearing inner/outer ring, rolling mill bearing, wind power bearing, gearbox bearing features	One-time grinding of raceway, inner/outer circle and end face, stable accuracy
4. Ring / Gear Parts	Gear ring, gear blank, synchronizer ring Large slewing ring, seal seat features	Large diameter, heavy weight, no deformation with vertical clamping
5. Short Shaft / Disc-shaft Integrated Parts	Hub, shaft head, flange shaft Motor end cover, rotor end disc features	Avoid horizontal clamping sag, better accuracy
6. Large, Heavy, Thin-walled Parts	Wind power, engineering machinery, mining machinery large rings, aerospace ring parts features	Most stable vertical clamping, no deformation or vibration

Typical Application Cases

Common features of these parts: One-time clamping completes compound grinding of internal circle, external circle and end face/step, strictly ensuring geometric tolerances such as coaxiality, roundness and perpendicularity; especially suitable for disc, ring, sleeve parts, as well as large, heavy workpieces not suitable for horizontal clamping.
Spindle Sleeve (One-time clamping for precision grinding of inner hole, outer circle and end face, ultra-high coaxiality required)	Precision Sleeve Parts (For hydraulic/pneumatic valves, multi-step internal/external circle + end face, micron-level dimensional tolerance control)	Gear Blank (Ensure coaxiality of inner hole and outer circle, improve subsequent gear processing accuracy)	Precision Flange (One-time grinding of internal/external circle + sealing end face, strict flatness and perpendicularity)

Bearing Ring (Common for wind power/automotive bearings, internal/external circle, raceway and end face all need vertical compound grinding)	Large Gear Ring / Turntable (For machine tool turntables and wind power gearboxes, heavy-duty ring parts, vertical grinding machine avoids deflection in horizontal processing)	Large Flange (For pipeline/wind power equipment connection, synchronous grinding of inner hole, outer circle and sealing end face, strict perpendicularity and flatness required)	Hydraulic Breaker Cylinder (For high-pressure working conditions, mirror grinding of inner hole, perpendicularity of outer circle and end face to prevent oil leakage)

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Vertical Combined Grinding Machine