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BACKING-OFF LATHES

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Description

Used in small batch and individual production for backing-off of worm-modular milling cutters (single thread and multiple thread, left and right), disc cutters and other tools with teeth, backed off radially, at an angle or along the axis with cutter or grinding wheel.

Advantages:

ability to manufacture worm milling cutters of class A;
combining of lathe machining of elements of cutter teeth and finishing grinding of machines milling cutters;
processing of shaped elements in cam mechanism of different purposes

Specifications:

Specifications	Model	1Е811	1Е812
Maximum diameter of workpiece installed above base frame, mm		250	360
Maximum distance between centers, mm		630
Maximum length of carriage travel, mm		600
Maximum tool height, mm		35	43
Dead center in spindle of headstock according to GOST 13214-79		Morse 6
Nominal size of spindle front end according to GOST 12595-72		6К
Maximum backing-off travel, mm		20	25
Range of spindle speed, rpm		2-115/2-146	1-56/2-115
Number of backing-off travel values		Stepless
Teeth processing number limits		1 ... 40
Maximum spindle torque, Nm		2,1/1,68	3,1/2,5
Number of longitudinal feeds		3
Feed limits, mm/rev		0,075-1,2
Limits of cut thread steps:
- metric, mm		0,5-250	0,5-360
- modular, mm		0,5-250	0,5-360
- inch, number of threads per inch		28-2	28-2
Limits of spiral grooves steps during backing-off, mm		100 ... 48000
Diameter of hole in spindle, mm		42
Maximum transverse support movement, mm		50
Support rotation angle, deg.		±180
Machine overall dimensions, max, mm:
length		2900	2900
width		1750	1850
height		1900	1900
Machine weight (without electrical equipment), kg		3915	4285
Grinding head
Maximum diameter of grinded workpiece, mm		180	250
Maximum diameter of grinding wheel, mm		125	150
Number of grinding spindle speeds,		3
Range of grinding spindle speed, rpm		5600... 11200	5000... 10000
Maximum angle of grinded lifting thread, deg.		25
Wheel dressing device
Maximum length of dressing line, mm		40
Dividing faceplate
Number of processed thread entries		2,3,4,5,6,10,12

Equipment:

DEFAULT SET:

set of change gears;
set of tools and spare parts for machine maintenance;
accessory set [rod for fixing mandrels, dead center, driving faceplate, semicenter, mandrels - 27 mm, 32 mm, 40 mm, safety device);
packing - wooden pallet, polyethylene.

OPTIONS BY CUSTOMER REQUEST:

grinding head;
wheel dressing device
long faceplate;
rubber anti-vibration supports;

BACKING-OFF LATHES

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