LEADWELL LCV - 760

                                          Leadwell is worlds top manufacturer of CNC machines. Leadwell's LCV 760 is a V Series, Vertical machining center controlled by FANUC Oi-MC controller

• This LCV 760 is ultimate in performance and more powerful
• It consists Powerful spindle motor (Upto 10000 rmp)
• Massive cast iron base for extra stability
• Wide column design for extra rigidity
• Rapid rates are upto 36 min
• Icresed capacity of X travel from 510 mm to 2040 mm
• Tab;e size from 600x350mm to 2100x1000mm

The technical specifications of Leadwell LCV 760 are as follows

ITEM	UNIT	LCV-760
Capacity
X axis travel	mm	760
Y axis travel	mm	610
Z axis travel	mm	610
Distance from spindle nose to table surface	mm	110-720
Distance from spindle nose to column surface	mm	718
Table
Table size (LXW)	mm	850x600
Max. table lad weight	kg	800 Fix
Spindle
spindle speeds	rpm	10000
Spindle nose (normal size.No)		7/24 Tapper,No.40
Spindel Bearing Inner Diameter	mm	70
Feedrate
Rapid travese X	M/min	32
Rapid travese Y	M/min	32
Rapid travese Z	M/min	28
Max. cutting feedrate	M/min	10
A.T.C
Tool storage capacity	pcs	30
Max. Tool Diameter	mm	100
Max. tool length	mm	250
Tool change time(T-T/C-C)	sec	10-Mar
A.P.C
Number of pallets	pcs	2
Pallet changing time	sec	12
Motors
Spindle motor FANUC	kW	18.5
X axis feed motor	kW	7
Y axis feed motor	kW	4
Z axis feed motor	kW	4
Machine size
Height of machine	mm	2980
floor space(LXW)	mm	3320x4800
Total machine weight	kg	10500
Power requirement	KVA	50
Computer control	FANUC	Oi-MC

SPINDLE HEADSTOCK ASSEMBLY

                     The Spindle Head Stock is solid supporting assembly which holds the spindle cartridge and spindle motor. The spindle motor connected to cartridge spindle thru High Torque Drive Timing belt,main motor adjust place uses to tightening and loosening the belt. The boosting cylinder positioned on top of the spindle cartridge, these both boosting cylinder and spindle cartridge are not directly coupled. When the boosting cylinder operates the shaft of the cylinder enlarges to push the cartridge mechanism to open the 'collet' this opening cause to unclamp the tool and closing cause to clamp.

                     This full assembly (Spindle Head stock poisoned vertically on guide rails supported with Z - axis ball screws and spindle motor, X and Y axis takes the spindle head stock to tool working position simultaneously the spindle cartridge to move up and down on the work place with help of Z - axis. Three num of Dog switches are located on the Z - axis. These are the limits for upper limit , lower limit and emergency stop. A micro switch is connected to Z - axis to move with the axis movement.

                                              PART LIST

Pos	Description	Specification	QTY
1	SPINDLE HEAD STOCK	FC-25	1
2	LM BLOCK	S45C	3
3	SHIM	SS41	6
4	SPINDLE HEAD STOCK	MV-40	1
5	MAIN MOTOR ADJUST PLATE	356#AL	1
6	MOTOR PULLEY	48T	1
7	SPACER	S45C	1
8	MOTOR SHAFT END CAP	SS41	1
9	H.T.D. BELT	1248-8M-50	1
10	SPINDLE HEAD STOCK COVER	2t	1
11	TUBE BUNDLE	AL	2
12	I TYPE INSERTING JOINT	3/4'' PT-34''	1
13	OIL DISTRIBUTOR BRACKET		1
14	MICRO SWITCH	LDS-5200K	1
16	UPPER DOG BRACKET	SS41	1
17	LOWER DOG BRACKET	SS41	1
18	HOME DOG	S45C	1
19	EMERGENCY DOG	S45C	2
21	ADJUSTABLE PLATE STOPPER	V-0	2
22	MICRO SWITCH BRACKET	4mm/SPCC	1
23	CHIP PLATE	2T/A+	1
24	DOG BRACKET PAD	3mm,SPCCB	2
25	HEAD STOCK SIDE COVER	2mm,SPCC A+	1
26	TOOL PAD	2mm,AL	1
28	COVER BACK	2mm,SPCC A+	1
30	I TYPE COPPER JOINT	CIN3/8''-1/4'' PT	4
31	T TYPE STEEL JOINT	3/8''PT	2
32	JOINT,CONDUIT PROTECTING TUBE	#68(J25BL82151,81151)	1
33	FLEXIBLE CONDUIT PROTECTING TUBE	R58,1-150	42

CARTRIDGE TYPE SPINDLE

                                                  The spindle is nothing but a drilling machines which holds a tool and performs cutting and drilling operation on work piece power by a high speed spindle motor (say 10000 rpm -This speed is fully controllable). The cartridge spindle is a heavy duty spindle allows heavy cutting and there is a over sized disc springs called "Collet" which gives the tight holding to the tool. This mechanism developed by LEADWELL using high precision P4 grade bearings reduces tool movement, improves tool life , reduces chattering and creates a better finish

PART LIST

Pos	Description	Specification	QTY
1	HEX-S.H.D. SET SCREW	M6X8mm	2
2	HEX-S.H.D. CAP SCREW	M6X16mm	2
3	SPINDLE KEY	SCM21	2
4	DUST PROOF RING	S45C	1
5	HEX-S.H.D. CAP SCREW	M6X25mm	8
6	END NUT SPINDLE	SCM440	1
7	O RING	G110	1
8	HEX-S.H.D. SET SCREW	M6X8mm	1
9	FRONT SPACER	OD=102,ID=70,X15.5L	1
10	COLLET/GRIPPER	MAS P40T-01	1
11	SPACER	OD=110,ID=83,X45L	1
12	SPACER	ID=82,ID=70,X15L	1
13	SPINDLE ANGULAR CONTACT BALL BRG	FAGHS7014CTP4UL	4
14	MEDIA SPACER	OD=83,ID=70,X15L	1
15	LOCK NUT	YSF-M70XP2.0	1
16	GRIPPER TYPE DRAW BAR	SCM440	1
17	SPACER	OD=32,ID=16,X5T	2
18	DISC SPRING	31.5X16.3X2.0T	28
19	SPINDLE	SNCM21	1
20	SPINDLE BEARING	FAGB7012C2RSDTP4SUL	2
21	QUILL	SCM440	1
22	HEX-S.H.D CAP SCREW	M6X12mm	4
23	COVER	S45C	1
24	SPACER	OD=70,ID-60,X22L	1
25	PULLY,SPINDLE	10000RPM 38T	1
26	DOUBLE ROUND ENDS KEY	8X7X60L	2
27	LOCK NUT	YSR-M55XP2.0	1
28	PULLING BAR	S45C	1
29	PULL BAR STOPPING RING	S45C	1
30	HEX-S.H.D. CAP SCREW	M5X15mm	6
31	WEARING RING	S-55904	1
32	LOCK NUT		1
33	ORIGINAL WHEEL	S45C	1
34	O RING	P22	2
35	SHIM	SCM440	1
36	HEX-S.H.D. SET SCREW	M3X8mm	2

WORKING /OPERATION:

                                    The spindle mechanism consists collet which operates by a boosting cylinder (a pneumatic cylinder).When the boosting cylinder is activated by air its plunger enlargement causes spindle collet to open and it release the tool (At this same operation air release inside the collet to clean). At the top of the boosting cylinder there is a adjusting bolt to adjust the opening of the collet. During the auto operation at the time of tool changing all the axis moves to tool change position, Automatic tool changer (ATC) door open and ATC motor energizes until complete one cycle of operation starting from home position .ATC consists double handed arm one arm holds unclamped tool from spindle and the other takes tool from magazine for the next operation and inserts in spindle.

TRANSMISSION ASSEMBLY Z - AXIS

                                       The z - axis gives the top and bottom moving support to the spindle head stock.The overall length of the Z - axis ball screw is 1520 mm. and the travelling distance 610 mm. The guides used for all the axis transmission assemblies are high speed linear motion guides by which the power consumption is less and precision movement is achieves.

                                        Also the ball screws are accurately aligned parallel to the guide ways and anchored at both ends. These ball screws are pre-tensioned this improve the machine stiffness,this also achieves accuracy. All X,Y and Z high speed ball screws are lubricates with automatic lubrication system  to improve the life.

Fig. LCV 760 Axis Assembly

	PART LIST
Pos	Description	Specification	QTY
1	BEARING HOUSING	S45C	1
2	BEARING HOUSING	S45C	1
3	BALL SCREW	Φ 45XP16X1210L	1
4	BEARING COVER	S45C	2
5	SPACER	S45C	1
6	SPACER	S45C	1
7	BEARING SPACER	S45C	1
9	SPACER	S45C	2
11	RUBBER	MV-40	2
12	COVER Y AXIS TRANSMISSION SEAT	1.6mm,SPCC A+	1
13	SHIM	S45C	1
14	SHIM ,Y AXIS MOTOR	SS41	1
16	LOCK NUT	SCM440	2
19	ANGULAR CONTACT BALL BEARING	30TAC62B(SU)NSK	7
20	L TYEP RAPID JOINT (R 1/8 Φ 4mm)	L-1/8"PT-Φ 4-A	3
21	O RING	G25	4
22	O RING	36X45.3X3.2TG3100360	4
23	OIL SEAL	VC42556	2
24	COUPLING	WTM-05.A-Φ 28/Φ 35	1

TRANSMISSION ASSEMBLY - Y AXIS

                                           The X - axis transmission assembly consists of a ball screw and a servo motor. The Y - Axis moves moves vertically (say 90 °) to the X - axis.The Y - axis is positioned between X - axis and the travelling column and is operated by a directly coupled servo motor whose movement is commanded by a servo amplifier. The travel distance of Y -axis is 610 mm, and the overall length of the ball screw is 1210 mm

	PART LIST

Pos	Description	Specification	QTY
	L TYEP OIL JOINT	1/8"PT-M10-Φ 6	5
1	BEARING HOUSING	S45C	1
2	BEARING HOUSING	S45C	1
3	BALL SCREW	Φ 45XP16X1210L	1
4	BEARING COVER	S45C	2
5	SPACER	S45C	1
6	SPACER	S45C	1
7	BEARING SPACER	S45C	1
9	SPACER	S45C	2
11	RUBBER	MV-40	2
12	COVER Y AXIS TRANSMISSION SEAT	1.6mm,SPCC A+	1
13	SHIM	S45C	1
14	SHIM ,Y AXIS MOTOR	SS41	1
16	LOCK NUT	SCM440	2
19	ANGULAR CONTACT BALL BEARING	30TAC62B(SU)NSK	7
20	L TYEP RAPID JOINT (R 1/8 Φ 4mm)	L-1/8"PT-Φ 4-A	3
21	O RING	G25	4
22	O RING	36X45.3X3.2TG3100360	4
23	OIL SEAL	VC42556	2
24	COUPLING	WTM-05.A-Φ 28/Φ 35	1

TRANSMISSION ASSEMBLY X - AXIS

                          The X - axis transmission assembly consists of a ball screw and a servo motor. The Ball Screw is a mechanical linear actuator which transmits rotary motion to linear motion. The X axis bears the total weight of the travelling column, including Y axis linear motion guide assembly and Spindle head stock. A servo motor is directly coupled to the ball screw which controlled by a servo amplifier, by which the movement of the X axis (say horizontal movement of the travelling column) is possible through Spindle motor.The total assembly rests on two guide rails with linear guide roller bearings by which free movement possibles. The travel distance of X -axis is 760 mm and the overall length of the ball screw is 1520 mm

Fig . Machine Axis Assembly

	PART LIST

Pos	Description	Specification	QTY
1	BEARING HOUSING	S45C	1
2	BEARING HOUSING	S45C	1
3	BALL SCREW	Φ 45X1520XP16	1
4	BEARING COVER	S45C	2
5	SPACER	S45C	1
6	SPACER	S45C	1
7	BEARING SPACER	S45C	1
9	SPACER	S45C	2
11	RUBBER TOPPER		2
12	COVER X AXIS TRANSMISSION SEAT	1.6mm,SPCC A+	1
13	SHIM	S45C	1
14	SHIM ,X AXIS MOTOR	SS41	1
16	LOCK NUT	SCM440	2
19	ANGULAR CONTACT BALL BEARING	30TAC62B(SU)NSK	7
20	L TYEP RAPID JOINT (R 1/8 Φ 4mm)	L-1/8"PT-Φ 4-A	3
21	O RING	G25	4
22	O RING	36X45.3X3.2TG3100360	4
23	OIL SEAL	VC42556	2
24	COUPLING	WTM-05.A-Φ 28/Φ 35	1

SWING ARM ASSEMBLY OF APC

 
                                           The swing arm assembly mainly consists of three hydraulic cylinders.Two are for rotating the table both in clock wise and anti clock wise respectively, and the rest is for UP/DOWN operation of the table.The rotating cylinders are with teethed type piston by which the rotatory motion is possible.

Fig. UP/DOWN Motion Cylinder 

PART LIST

Pos	Description	Specification	QTY
1	HEX-S.H.D CAP SCREW	M8X30mm	4
2	HEX-S.H.D CAP SCREW	M8X35mm	8
3	HEX-S.H.D CAP SCREW	M6X20mm	8
4	CAP, HYDRAULIC CYLINDER	S45C	1
5	O RING	G95	1
6	PISTION	SCM21	1
7	HEX-S.H.D CAP SCREW	M10X30mm	4
8	HEX-S.H.D CAP SCREW	M16X16mm	8
9	ROTATING PIN	SCM21	2
10	ROTATING SHAFT	SCM21	1
11	BEAQRING COVER	S45C	1
12	O RING	G120	1
13	GEAR	SCM4	1
14	DOUBLE ROUND ENDS KEY	16X10X60L	2
15	HEX-S.H.D CAP SCREW	M8X25mm	8
16	HEX-S.H.D CAP SCREW	M8X16mm	3
17	HEX-S.H.D CAP SCREW	M6X25mm	4
18	SHAFT	S45C	1
19	HYDRAULIC CYLINDER BRACKET	FC-25	1
20	COVER	S45C	1
21	HEX-S.H.D CAP SCREW	M6X40mm	4
22	LOCK NUT	YSR-M100XP2.0	1
23	BEARING HOUSING	S45C	1
24	SPACER	S45C	1
25	TAPERED ROLLER BEARING	32020X	2
26	HEX-S.H.D CAP SCREW	M8X20mm	8
27	PROXIMITY SWITCH BRACKET	3MM,SPCC	1
28	PROXIMITY SWITCH	E2E-X2D1-N/2	2
29	QUAD RING	4341	1
30	WEAR RING	S55909-1050-47A	2
31	FIX ROD	S45C	4
32	SHAFT RING	FC-30	1
33	WEAR RING	S55909-0850-47A	1

Position	Description	Specification	QTY
38	O RING	P5	2
39	NEED VALVE, CUSHION	S45C	2
40	SCREW	S45C	8
41	HYDRAULIC CYLINDER	63X72.5X364L	2
42	HEXAGON NUT	M10	16
43	HEX-S.H.D CAP SCREW	M6X60mm	2
44	OIL SEAL	UHS53	2
45	WEAR RING	B150704-0630	2
46	O RING	P16	2
47	GEAR RACK	SCM4	1
48	PISTON		2
49	ELECTROMAGNETIC SWITCH	JN-01	2
50	CYLINDER COVER	S45C	2
51	O RING	P53	2
52	STEEL BALL	Φ6mm	2
53	COMPRESSIVE SPRING	SWPV	2
54	O RING	P18	2
55	ADJ.PIN	SCM4	2
56	LOCK NUT	S45C	2
57	MAGNETO SPHERE	DMB-63X42X5-CS	2
58	COVER		2
59	HEX-S.H.D CAP SCREW	M51X12mm	8
60	BACK UP RING	S52028-328A	2
61	QUAD RING	4328A	3
62	I TYPE STEEL JOINT	1/8"PT-1/4"H	2
63	L TYPE STEEL JOINT	3/8"PT-3/8"H	2

AUTOMATIC PALLET CHANGER (APC)

                   APC means Automatic Pallet Changer,nothing but a table gives seat to 4th and 5th axis rotary tables by it axis rotates to work place. APC combines with three hydraulic cylinders one for

table up/down and other both are for rotating the table, ad there another hydraulic locking mechanism which locks the table during job going on. Also there to 4 sensors, two for sensig table up/down and the other two are for sensing table CW/CCW  positions (These are magnetic switches mounted on CW/CCW rotation cylinder)

Working of Automatic Pallet Changer:

                      

                     Under home position state the locking the table will be in down position and the locking mechanism locks the table. When rotating the table (M ode is M60 on MDI mode) the locking mechanism releases the table and UP solenoid activates to up the table once the up position sensor gives the signal to PMC, CW solenoid activates to rotate the table in Clockwise motion (Assume working axis is in CCW position), once table reaches the CW position magnetic switch gives the signal to PMC. PMC activates DOWN solenoid to down the table, now down sensor sends signal to PMC and locking mechanism locks the table at working position.

	PART LIST

Pos	Description	Specification	QTY
1	BRACKET	FC - 30	1
2	NUT	S45C	4
3	TABLE	FC - 30	1
4	PLATE PIN	S45C	4
5	STRAIGHT PIN	Φ 10X30L	4
6	HEX-S.H.D.CAP SCREW	M8X25mm	24
7	LOCKET BRACKET	SCM21	4
8	DISTRIBUTOR	SS41	1
9	TABLE COVER SUPPORT (A)	3mm,SPCC B+	4
10	TABLE COVER SUPPORT (B)	3mm,SPCC B+	4
11	TABLE GUARD	2mm,SPCC A+	2
12	TABLE SUPPORT PLATE	FC-25	1
13	HEX-S.H.D.CAP SCREW	M16X50mm	6
14	PLATE BRACKET	FC-25	1
15	EYE BOLT	M12	4
16	TOOL STUD	AZBGRP45T-1	8
17	O RING	P22	4
18	PISTON	SNCM8	4
19	STRAIGHT PIN	Φ8X25L	4
20	HEX-S.H.D.CAP SCREW	M5X10mm	24
21	CONE BRACKET	SCM21	8
22	CLAMPING GRIPPER	SKGR.38/P45T-1	4
23	COVER	2mm,SPCC A+	4
24	CONE	SCM21	4
25	O RING	P8	12
26	BACK UP RING	S52029-330	8
27	QUAD RING	4330	4
28	O RING	G60	4
29	STOPPING COLLAR,PISTON	SCM4	4
30	LEFT CORRECTED PAD	S45C	2
31	COVER (L)	2mm,SPCC A+	1
32	COVER (R)	2mm,SPCC A+	1
33	SUPPORT BOARD PLATE	1mm,AL	2
34	NORD LOCK WASHER	M24(SC)	4