CNC Roll Grinding Machine

• Application: Metal
• Process Usage: Metal-Cutting CNC Machine Tools
• Movement Method: Contour Control
• Control Method: Open-Loop Control
• Numerical Control: CNC/MNC
• Processing Precision: 0.01~0.02(mm)
• Model NO.: MQK84200X120
• Performance Classification: High-End CNC Machine Tools
• Certification: ISO 9001
• Condition: New
• Transport Package: Wooden Case
• Specification: 6000MMX2200MMX2000MM
• Trademark: gmec
• Origin: China
• HS Code: 8457101000
• Production Capacity: 5000PCS

Product Description

MQK84200×120 Roll Grinding Machine

1. 1. Main technical specifications

Technical specification for MQK84200×120 Roll Grinding Machine

No.	Name	Unit	Spec.
1	Max. Grinding Dia.(with wheel of f915mm)	mm	Φ2000
2	Min. Grinding Dia.(with wheel of f915mm)	mm	Φ200
3	Max. Distance between centers	mm	10000
4	Max. Workpiece weight	Kg	30000
	Max. weight of workpiece with bearings	kg	40000
5	Speeds of faceplate	r/min	3~40
6	cutting speed	m/sec.	45
7	longitudinal movement speeds of carriage	mm/min	50~4000
8	Max. distance of grinding carriage cross travel	mm	≥750
9	rapid cross moving speed for grinding carriage	mm/min	1000
10	concave/convex grinding (on radius)	mm	≤1.5
11	continuous cross feeding speed	mm/min	0.005~1.2
12	Period cross infeed	Mm/stroke	0.005~0.12
13	Micro infeeding manually (electrical handwheel)	mm/pulse	0.001
14	wheel size(OD´W´ID)	mm	915×100×305
15	measuring range of measuring device	mm	Φ200~Φ2000
16	longitudinal movement of tailstock(motive)	mm/min	1800
	manually	mm/r	1.3
17	adjusting distance for quill of tailstock center	mm	150
	Motive	mm/min	760
	manually	mm/r	0.84
18	Supporting diameter of steadyrest	mm	Φ90 -Φ450
19	Measuring range of measuring device for jaws	mm	Φ90 -Φ450
20	Main motors:
	(1) Motor for workpiece        power	Kw	73
	speed	r/min	800
	(2)motor for grinding wheel       power	Kw	81
	speed	r/min	1150
	(3)motor for carriage movement    torque	Nm	38
	speed	r/min	2000
	(4) motor for cross feeding of wheel head  torque	Nm	11.5
	speed	r/min	4500
	(5) motor for CNC camber grinding:     torque	Nm	5.4
	speed	r/min	3000
	(6) motor for longitudinal movement of tailstock power	Kw	0.75
	speed	r/min	1500
	(7)motor for sleeve movement of tailstock   power	kw	1.1
	speed	r/min	1200
	(8) motor for measuring device:      Torque	Nm	4.3
	speed	r/min	3000
	(9) motor for hydro static guideway and lubrication:                      power	kw	0.25
	speed	r/min	1400
	(10) motor for oiling of hydro-dynamic/static bearing:                             power	Kw	4
	Speed	r/min	1200
	(11)motor for cross moving of headstock, tailstock steadyrest:                           Power                                     Speed	kw r/min	1.5 1500
	(12)motor for longitudinal moving of steadyres   power                                   speed	kw  r/min	0.75 1400
23	overall size of machine(L´W´H)	mm	18000×5800×3000
24	Weight of machine	kg	About 100000

 

Attachment 3: Scope of supply for customer and seller

Scope of supply for one basic machine MQK84200×120 CNC roll grinding machine

3.1  Basic machine

Workpiece bed                                          1 piece
Grinding wheel bed (include: gear and rack)                  1 piece
Carriage (include: cable track of carriage, ball screw set for grinding carriage infeeding)                                               1 set
Grinding carriage (incl.: grinding carriage body, cable track)        1 set
Hydrodynamic/static bearing for grinding wheel spindle and high precision hydrostatic eccentric sleeve                                   1set
Vertical rotary operating panel                                1 set
CNC camber system                                        1 set
Auto dynamic balancing device for grinding wheel (Fr. MARPOSS ITALY)                                                1 set
Constant oiling/returning system for spindle hydrodynamic bearing                                               1 set
Hydrodynamic oiling lubrication system for the guideway of carriage and grinding carriage                                            1 set
Protecting unit for machine power off and its hydraulic control system                                               1 set
Steayrest and jaws (Φ  - Φ   mm)                             full set
Fixed steadyrest and jaws (Φ  -   mm )                         1 pair
Telescopic stainless steel covers for G.W bed          1 set
Cooling system for grinding (flowing volume 300 Liter) (incl.: pipe, pump, valve, nozzle, water trough etc.)                                1 set
Cooling system for grinding rubber roll                          1 set
Grinding wheel cover                                                     1 set
Dry oil lubrication system for headstock                         1 set
Auto measuring system                                                  1 set
Headstock                                                                      1 set
Tailstock                                                                         1 set
Dresser's seat for G.W                                                   1 set
Oil temperature for spindle                                             1 set

3.2  Basic accessories to machine

Grinding wheel holder                                                   4 sets
Grinding wheel                                          4 pieces
Dead centers (60degree, 75degree)                        1 pair/each
Active flat center                                          1 pair
Arbor for checking headstock & tailstock and checking sleeve for G.W spindle                                                  1 set
Loading and unloading device for G.W                         1 set
Dressing pen with 1.5 Karat diamond for G.W                   2 pieces
Anchors and wedges for erecting machine                      1 set
Special checking tools for bed (incl.: V-block, leveling pad, aligning shim for bed foundation)                                            1 set
Grinding wheel static balancing stand and arbor                   1 set
Drainage pumps and pipe for cooling system                      1 set
Universal spindle coupling and chuck                           1 set
Splash guard for workpiece bed                               1 set
Working lamp for machine                                   1 set
Spring unit                                              1 set
Dust collecting system                                      1 set
Belt grinding polishing unit (mounted on the G.W.)           1 set
Polishing device                                            1 set
Turning device                                             1 set
Milling device                                              1 set
Steadyrest with bearing and pad                             1 pair
Dresser for diamond wheel                                 1 set

3.3  Electrical instruments

Power supply of electrical system: 3- 400V±10%, 50Hz
Cabinet (4400 × 600 × 2000mm )ISO manufactured, separated type (incl.: internal wiring, power unit, protecting switch, executing elements) 
                      1 set
Outer wiring between cabinet and machine                      full set
SINUMERIK840D CNC system host (the latest)                 1 set
SIEMENS OPO15 (15'LED, the latest)                        1 set
SIEMENSSIMODRIVE S120 AC servo unit                    1 set
SIEMENS 1FT7 full digital AC servo motor and cables            4 sets
SIEMENSS7-300PLC module                                 1 set
Electrical handwheel                                         1 set
Operating panel and instrument                                 1 set
Grinding wheel motor (type: SIEMENSIPH7)                     1 set
Headstock motor (type: SIEMENS1PH7)                         1 set
New linear grating and signal cable from HEIDEHAIN            full set
Color jet print (A4)                                          1 set
Assistant AC motor and oil pump motor for machine              full set
UPS Steady Voltage power supply from PHELX                  1 set
SIEMENS remote diagnostics software and MODEM                1 set

All electrical units have been wired already, all cables from the machine to the cabinet belong to the scope of supply, and the wires between the cabinet to the outer power supply are prepared by user.

 

Attachment 4 Working range in designing and installing responded by buyer and seller

4.1  Documents supplied by customer

All rolls drawings for grinding in details;
Grinding requirement, incl.: accuracy and stock amount;
If necessary, supply the ground properties for machine, like water level of underground, foundation resistance etc;
Colour of machine or colour stand of paint.

4.2  Design examination

MQK84200x100 CNC Roll Grinding Machine is manufacturer's stable products, in order to satisfy requirement and make plays benefit as soon as possible, we recommend that buyer should send personnel to manufacturer's site for designing examination. The examination time is within 2 months after the contract comes into effect usually.
The travel expenses of the personnel for design examination and pre-inspecting should be borne by the buyers, the seller should provide the traffic, communication and accommodation with convenient in the city.

4.3  Working range for installing machine responded by buyer

Buyer should make well foundation in accordance with foundation drawings provided from seller; the maintaining time for machine foundation is not less than 28 days. The steel plate cover should cover the foundation pit. The machine room should be completed grouting compound, and transport the machine to the erection site.
After machine is installed in site and leveled roughly, the second grouting should be made by Buyer.  
Water, power supply connected to the site.
Crane with a capacity of min. 30tons, including coupling devices, operating personnel, and lifting cables.
Auxiliary material necessary for the operation of the machine, e.g. general tools, clean oil and rolls and grinding wheel for test running.

Attachment 5.  Designing range and schedule supplied by seller

No.	Name of document	Qty	Unit	Deliver time
1	Plane arrangement drawings of machine; formal condtional drawing of machine	2	set	Within 1 month after contract signed
2	Formal foundation drawing	2	set	Within 2 months after contract signed
3	Operation and maintenance manual for machine	2	set	With machine

 

4	Construction introducing of machinery	2	set	With machine
5	840Dsl  operating manual	2	set	With machine
6	840Dsl diagnose guide	2	set	With machine
7	840Dsl programming manual	2	set	With machine
8	Language programming manual	2	set	With machine
9	Disk for system back up	2	copy	With machine
10	Disk for operation manual	2	copy	With machine
11	Test certificate	2	set	With machine
12	Packing list	2	set	With machine
13

Note: The parts purchased from abroad listed above are subject to the manufacturer confirmation.

Attachment 6 Documents supplied by buyer

No.	Name of document	Delivery time
1	Complete information on ground properties all data on possible disturbance frequency require for the foundation layout	1 month after the contract is effectively
2	All roll drawings for grinding	Ensure it at first contacting for designing
3	Layout of room for CNC roll grinding machine(the position of machine should be indicated	When contract is signed
4	Requires for paint color of machine	Within 4 month after contract is effectively
5	Ground condition of site	Supplied when contract is effectively
6	Plane layout approved by buyer	2 weeks after buyer received the layout supplied by seller

Seller is responsible for the complete and whole set of machine.

Attachment 7 Seller's guarantee

Barrel grinding of roll:

Cylindricity	0.002 - 0.003mm/m
Roundness	0.002 - 0.003mm
Roughness	Ra: 0.2μm

Concave/convex grinding: (crown value :0.1mm)

Error shape accuracy	0.002 - 0.003mm/m
Roughness	Ra: 0.2μm

Arbitrary curves grinding

Error shape accuracy	±0.003mm/m
Straightness	0.002 - 0.003mm
Roughness	Ra: 0.2μm

The workpiece surface should be brightly and smoothly after grinding, surface defects such as spiral grain, chatter, bright mark, spot etc., which are not normally found by visual inspection. When finishing grinding, the roughness is related with grinding wheel used, coolant, roll material & hardness and certain technological data.
Roll should be supported on the steady rest for grinding. For get ideal grinding accuracy, the roundness of the roll journal must be higher than grinding accuracy of the machine.

Attachment 8 Manufacturing schedule for machine

The machine is delivered within 7 after the contract is signed (That is the delivery time Aug. 31, 2018),  CIP  Shanghai port
Manufacturing schedule:

Month item	1	2	3	4	5	6	7	8	9	10	11	12	13	14
Programme designing
Designing examination
Foundation drawing supply
manufacturing
Assembly and commissioning
Pre-acceptance
Training
Painting and packing
shipping
Installing and acceptance

 

Attached list 1  List of spare parts with machine

No.	Name	Qty.
1	Filter core	3 pieces/set
2	V-belt for headstock	3 group
3	V-belt for grinding	2 set
4	Measuring probes	5 pieces
5	Relay	2 pieces
6	contactor	2 pieces
7	Button and indicating lamp	2 set
8	Limit switch	2 pieces
9	Fuse core	10 pieces
10	Seal ring	10 pieces
11	Plug socket	2 pieces
12	Air switch	2 pieces

Attached list 2  List of tools with machine

No.	Name	QTY.
1	Special checking tools for beds	1 set
2	Lifting tools for grinding wheel	1 set
3	Special wrench	1 set
4	Inner hex wrench	1 set
5	Double end wrench	1 set
6	Single end wrench	1 set
7	Checking arbor	2 pieces
8	Checking sleeve	1 set
9	Diamond (2 Carat)	1 pieces
10	Gauge	1 piece

 

Attached list 3  List of main imported parts

A. Machinery part:

Type	Name	Qty.	Position	Manufacturer
PA722SGD0400	Speed reducer	1	Cross feeding mechanism	Germany STBER
5884615	Speed reducer and coupling	1	CNC camber device	Germany ATLANTA
NA4912A	Single row rolling needle bearing	1	Cross feeding mechanism	SKF or FAG
81212LPB	Thrust short cylindrical roller bearing	1	Cross feeding mechanism	SKF or FAG
ZARF60150-TV	Needle/thrust cylindrical roller bearing	1	Cross feeding mechanism	SKF or FAG
32048X	Single row taper roller bearing	1	Headstock	SKF or FAG
32968	Single row taper roller bearing	1	Headstock	SKF or FAG
ZS86134	Thrust needle bearing middle ring	1	Grinding head	INA
GS81120	Thrust needle bearing middle ring	4	Grinding head	INA
AXK100135	Thrust rolling needle and holder sets	1	Grinding head	INA

B. Electrical part:

No.	Name	Spec. & Type	Manufacturer
1	CNC system	840Dsl	Siemens Germany
2	Relative module and cable		Siemens Germany
3	Motor for G.W and headstock	1PH8serial	Siemens Germany
4	Servo motor for( X,Z,U,X1)axis	1FT7 serial	Siemens Germany
5	Speed regulating and driving for (C,C1,X,Z,U,X1) axis	S120	Siemens Germany
6	Monitor OP015	15.0"TFT(1024X768)	Siemens Germany
7	Potable unit	6FX2007-1AD03	Siemens Germany
8	UPS power supply	'QUINT-DC-UPS	Phelx
9	Auto dynamic balancing device for grinding wheel	P1dWB+ST4100	Mappos Italy
10	Short grating for measurement	MT12W	Heidenhain
11	Long grating for measurement	LC495S	Heidenhain
12	Long grating for X-axis	LC495S	Heidenhain
13	Cabinet		RITTAL

C. Hydraulic part:
 

No.	Type	Name	Qty.	Manufacturer
1	PVL-316	Variable vane pump	1	Atos
2	PFG-214	Gear pump	1	Atos
3	PFG-142	Inner gearing pump	1	Atos
4	DHI-0713/2/SP-667	Magnetic reversing valve	2	Atos
5	DHI-0631/2/SP-667	Magnetic reversing valve	2	Atos
6	DHI-0714/2/SP-667	Magnetic reversing valve	1	Atos
7	HR-012/2	Piled hydro control one-way valve	2	Atos
8	HG-031/32	Piled pressure-reducing valve	2	Atos

9	HG-034/32	Piled pressure-reducing valve	2	Atos
10	HMP-011/100	Piled throttle valve	1	Atos
11	HQ-012	Piled cut off valve	3	Atos
12	HQ-013	Piled cut off valve	2	Atos
13	40CBHMIRN14MC180M232300	Oil cylinder	2	Parker

Note: The types listed above confirmed at the time of design examination if the types are changed.


Besides CNC ROLL GRINDING MACHINES,also we can supply other machine tool below:
1.Roll Grinding Machines
2.Centerless Grinders
3.Large-type External Cylindrical Grinder
4.CNC Precision Double-Column Guidew AY Grinding Machines
5.Presses
6.Forging Rolls
7.Wedge-Roll Forming Machine