Compound CNC grinding machine

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Compound CNC Grinding Machine

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Vertical Compound Grinding Machine

A CNC grinding machine uses a rotating grinding wheel to remove small amounts of material from a workpiece. They are, first and foremost, finishing machines. In the case of round work, a machinist often removes significant amounts of material using a lathe before transferring the part to a cylindrical grinding machine for the finishing operation.

CNC grinding is primarily about taking off small amounts of metal with a high-speed abrasive rotating wheel acting as the cutting tool. The grinding wheel rotates in place while the part is fastened to the machine and moves in the X-, Y-, or Z-axis. Although these movements depend on the part’s shape and size, the grinding wheel usually requires multiple passes to get the correct finished dimension.

All BDF CNC grinders are specifically configured, tooled and programmed to suit the end user’s most demanding requirements. Our capabilities include not only conventional grinding, but high speed superabrasive grinding, where we lead the industry in precision and productivity standards.

BDF’s unique machine features and vast expertise with superabrasives offers successful solutions for difficult to cut materials such as carbide, ceramic, exotic aerospace alloys, and hard tool steels.

We Provide Diversified Solutions, Including Customized Ones

CNC vertical composite grinding machine for inner bores, end faces and external diameter

VM, VHM, DVM series high-precision CNC vertical composite grinding machines are vertical composite grinding machines with full closed-loop digital control independently designed and developed by the Company. The grinding machines have a vertical layout and double-column structure. High-precision liquid hydrostatic rotary table is air-tight and wear-free and may realize longer service life and accuracy retention time.

Reasonable and compact structural design; the workpiece can be clamped once to complete the multi-process grinding processing of the inner hole. outer circle and step surface, to ensure that the parts of the higher requirements for positional accuracy; widely used in bearings, wind power, construction machinery, valves, automotive and other industries.

Expertise in type

Single Spindle Type

Double vertical spindle

One Vertical and One Horizontal

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Working Environment and Processing Capacity

Processing capacity:

Suitable for I.D., O.D. and end face grinding of heavy, non-circular workpieces.
Heavy workpieces can be fixed on the fixture by hanging.
Free combination of single spindle, double spindle, tool changer or no tool changer.
Easy clamping operation may significantly reduce the preparation time for loading, unloading, alignment etc.
No need of setting the processing site, automatic compensation of workpiece size, automatic compensation calculation of grinding wheel position compensation.
Double spindle models can be provided with high and low speed grinding wheels, or one vertical and one horizontal spindles.

Characterisation:

Siemens 828D CNC system adopted in the machine can realize multi-axis servo control.
To meet the processing requirements, automatic and manual (electronic handwheel) control can be carried out for each processing element of the parts.
Fully enclosed protection may offer excellent operability, maintainability and safety.

Operating environment of the machine: (user provided)

Ambient Temperature: 10-35°C ;optimal temperature 20±2°℃;

Relative Humidity: ≤85%;

Working Power Supply: three-phase AC 380V±10%, 50±1%Hz；

Dry Clean Gas Source Pressure: ≥0.7MPa, Flow Rate: ≥50m3/h;

Test item accuracy evaluation:

Test item	Test accuracy (Manufacturer)
Roundness	≤0.1μm
Cylindricity	≤0.2μm
Coaxiality	≤0.2μm
Roughness	Ra0.20μm
Verticality	≤0.2μm

Standard accessory tools (shanks - grinding wheels):

Vertical Compound Grinding Machine 55/85/125( The following 6 types of accessory tools are available)

The grinding wheel with maximum diameter of p 255 mm ( 305 mm) can be stored in the ATC unit. However, the size of adjacent toolshould be limited to A 180 mm or less.
*Vertical Compound Grinding Machine 85/125

Control Panel Interface

In terms of the control panel, the dialogue box on 15.6 inch touch screen ensures more efficient, user-friendly and easy systeml operations. In such user-friendly dialogue box mode, just enter the parameters so that the program automatically calculates the cross section parameters of the grinding wheel. Perform one key touch to generate the program for automatic calculation of the machining path and automatic dressing of the grinding wheel. On the operation interface we can see the processing path and operate in a morel concise and convenient manner.

Typical Example

Machine specification:

Item		VM55	VM85	VM125
Basic parameters	Workbench size	Φ550	Φ750	Φ1150
	Maximum workpiece swing diameter	Φ550	Φ850	Φ1250
	Maximum workpiece height (with fixture)	450	600	600
	Spindle workbench loadable weight (kg)	600	1000	5000
	Workbench rotation speed	20~350	8~200	5~100
Processing capacity	Hole diameter grinding range	Φ30~Φ400	Φ50~Φ800	Φ50~Φ1200
	External circle grinding range	~Φ500	~Φ800	~Φ1200
	Grindable length (inner bore)	225 (∅ 200 or less, tool length 250) 225 (∅ 200 or more, tool length 150) 325 (∅ 200 or more, tool length 250)	325 (∅ 250 or less) 400 (∅ 250 or more, tool length 250) 485 (∅ 250 or more, tool length 350)
	Grindable length (external circle)	275 (flat wheel grinding、∅ 255 wheel, tool length 150) 125 (inclined wheel grinding, same diamter)	400 (flat wheel grinding, tool length 250) 500 (flat wheel grinding, tool length 350) 150 (inclined wheel grinding, same diameter)
Grinding wheel spindle mounting method	Shank type	HSK-A63	HSK-A100	HSK-A100
External grinding wheel spindle	Power (kw)	40	34	34
External grinding wheel spindle	Maximum speed	2500-15000	2500-10000	2500-10000
Internal grinding wheel spindle	Power (kw)	40	40	40
Internal grinding wheel spindle	Maximum speed	6000-30000	6000-30000	6000-30000
Horizontal grinding wheel spindle	Power (kw)	20	20	20
Horizontal grinding wheel spindle	Maximum speed	1500-6000	1500-6000	1500-6000
Turret		HSK-A63-6T	HSK-A100-6T	HSK-A100-6T
Linear servo axis	X-axis travel	660	660	660
	X1 axis travel	660	660	660
	Z, Z1 axis travel	1100	1350	1800
	Quick travel (m/min)	0~15	0~15	0~15
	Feed resolution	0.0001mm	0.0001mm	0.0001mm
	Positioning accuracy	≤0.005	≤0.005	≤0.005
	Repeat positioning accuracy	≤0.003	≤0.003	≤0.003
NC	SIEMENS	Sinumerik 828D	Sinumerik 828D	Sinumerik 828D
Machine weight (kg)	Net weight	14000	16000	19000

*Notes:

1. The above specifications are given mainly based on the size of rotary table size. Single spindle, double vertical spindles or one vertical and one horizontal spindles are available for choice. Tool change or no tool change can also be selected.

2. The above specifications and configurations can be customized according to processing requirements of customers.

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About us

We feature a wide range of machine tools and heavy-duty equipment to suit truly diverse production requirements.

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No.5 Shengzhuang Road, Hengshanqiao Town, Wujin District, Changzhou City, Jiangsu Province, China

Customer service

Vertical Compound Grinding Machine

We Provide Diversified Solutions, Including Customized Ones

Working Environment and Processing Capacity

 Processing capacity:

 Characterisation:

 Test item accuracy evaluation:

 Standard accessory tools (shanks - grinding wheels):