Description
The special construction of the Multi-Grind makes it possible to combine the functions of cylindrical, flat, and tool grinding in one machine. With external cylindrical grinding, the workpiece is either clamped on one side or supported between centers in the stable tailstock. An internal grinding device can also be attached to the headstock and light surface grinding work is also possible with this model. With the additional tool grinding function area, you can use the Multi Grind to machine the cutting edges of a large number of tools.
The functionality of the Multi-Grind ranges from external and internal cylindrical grinding to taper grinding. The Multi-Grind also allows easy tool grinding (sharpening of cutters, reamers and turning tools) and is suitable for light surface grinding jobs.
Features
Three-Point Bearing The custom three-point bearing of the grinding spindle ensures minimum temperature effects and consistent grinding quality.
Feed Drives Hydraulic table feed (longitudinal) with automatic change of direction. An additional manually operated longitudinal feed with hydraulic support allows feed speeds up to 275"/min.
Grinding Headstock Special grinding headstock design allows simultaneous setup of 2 different grinding wheels. The grinding headstock can be moved in transverse direction and vertically; and it can be rotated around the vertical axis.
Speeds The headstock operates at 3 different speeds (110, 200, 300 rpm) which are set through an easy to operate gear shift lever.
Additional Features: central lubrication system; sturdy construction; the KNUTH Multi-Grind body is made of solid cast-iron and weight 2,860 lbs.; minimizes vibration effects; electrical components are mounted easily accessible in a control cabinet
Standard Equipment
Coolant system
Exhaust vacuum
Tool mount / indexing head MT 4
Internal grinding unit including 2 die grinders
3-jaw chuck (4" diam.)
Left tailstock
Right tailstock MT 2
Center point
Half center points
Balancing station
Spindle extension
Vise for surface grinding (3-D angle adjustment)
Spring stop
5 drivers
Various splash guards
Grinding wheel guard (2x)
Automatic central lubrication
Operator manual
Test certificate
Specifications
Working Area
Workpiece length (max.): 20”
Workpiece weight (max.): 22 lbs.
Grinding diameter: 7.9”
Table swivel range (max.): +45° / -30°
Outside grinding measure, maximum: Ø 0.2-2. x 15.8”
Inside grinding measures, optimal: Ø 0.4-2 x 3”
Tool grinding measure: 8” x 20”
Work piece length surface grinding: 8”
Work piece width surface grinding: 2”
Travels
Travel Z-axis: 19”
Feed
Feed per hand-wheel rotation X-axis, fine: 0.0394”
Feed per hand-wheel rotation X-axis, rough: 0.1575”
Feed per scale division X-axis, fine: 0.0002”
Feed per scale division, X-axis, rough: 0.00079”
Scale division of height adjustment: 0.00039”
Longitudinal feed speed (hydraulic): 0 fpm - 20 fpm
Manual, hydraulic assist: 23 fpm
Headstock
Working spindle taper: 2 MT
Working headstock swivel range: ± 90°
Working spindle speed-stages: 3
Working spindle speed: 110 rpm - 300 rpm
Chuck diameter: 4”
Grinding Headstock
Grinding spindle speed: 2500 rpm
Inside grinding spindle speed: 13500 rpm
Grinding headstock swivel range: ± 90
Grinding headstock - vertical / - transverse: 8”
Tailstock
Tailstock taper: 2 MT
Tailstock quill stroke: 1”
Height adjustment per handwheel rotation: 0.04”
Drive Capacity
Motor rating main drive : 1.5 Hp
Machine drive capacity: 3.4 Hp
Measures and Weights
Overall dimensions (length x width x height): 60” x 54” x 56”
Weight: 2,860 lbs.
Grinding wheel dimensions: 7.87” x 0.79” x 2.95”
Grindstone dimensions, inside grinding (max.) (length x width): 1” x 0.8” x 0.2”
Grindstone dimensions, inside grinding (min.) (length x width): 0.4” x 0.4” x 0.1”
