Unit E2, Doulton Road Trading Estate, Rowley Regis, West Midlands, B65 8JQ
Tel: 01384-569821    Fax: 01384-633946

The MicroSprint 50 - Specification

Work capacity

Max Diameter Bar

50.8mm

Max Diameter in 200mm Chuck

160mm grip

Max Die Head Size

1.25in.

Headstock

Spindle

Hardened and Ground

Hole through spindle

51.6mm

Spindle bearings, front and rear

Matched pair of angular contact (EP5)

Spindle bearing diameter, front

90mm

Spindle nose

A2.6 to BS 4442 fitted with sleeve and nosecap to accept V-120 series multibore collets

Spindle drive

Type

Poly-vee be drive from 3 speed motor through constant mesh oil immersed 2 ratio gearbox with pick off gears to give 5 ranges

Spindle speeds RPM

range 1

50

65

100

315

420

630

range 2

65

90

135

420

565

840

range 3

100

135

200

640

850

1275

range 4

150

205

300

965

1295

1930

range 5

205

275

415

1300

1740

2600 rpm

AC motor power

5.5/5.5/3.75 kW (7.5/7.5/5 HP)

AC motor type

T.E.F.C. 3 speed reversible with integral fail safe brake

Power supply

Electrical rating

415/440 volts, 3 phase, 50 hertz or as appropriate to local supply.

Power requirement

16.5 amps constant, 79 amps surge. Supply rating 63 amps fused, 10sq.mm cable

Turret

Number of faces

6, random index, unidirectional

Indexing time (max)

1 sec, stn to stn; 2.5 secs, stn 1 to 5

Dia of tool holes

25.4mm (Optional 38.1 mm)

Centre of holes to top of slide

69mm

Turret slide

Max effective working stroke

200mm

Max movement

400mm

Feedrate range, stepless

0-2000mm/min.

Number of feeds

Infinite, forward or back.

Rapid traverse rate

8000mm/min.

Drive

Recirculating ball screw driven by DC servo motor via toothed belt.

Max thrust

13000 Newtons (2830 lbf.)

Cross slides

Type

High thrust independent, two.

Slide drives

Hydraulic/pneumatic cylinder

Max thrust

7500 Newtons (1700 lbf.)

Tool size

19mm x 25.4mm

Max distance between posts

432mm

Back feeding

Programmable on both slides

Front:

2 Axis traversing, programmable to accept optional copying unit

Slide stroke to centre line

114mm

Feedrate range, stepless

0-2000mm/min.

Longitudinal travel

152mm. right to left

Longitudinal feedrate range

0-2000mm/min.

Rapid traverse rate

6000mm/min.

Rear:

Single Axis, fixed adjustable

Slide stroke to centreline

114mm.

Feedrate range, stepless

0-2000mm/min.

Rapid traverse rate

6000mm/min

Twin overhead slides

Type

Twin 65° recess/part off units

Slide drives

Hydraulic/pneumatic cylinders

Max thrust

2700 Newtons (6001bf.)

Tool size

16mm x 16mm

Stroke

89mm

Tool post to centreline, max.

114mm

Longitudinal adjustment101mm

Feedrate range, stepless

0-1000mm/min.

Rapid traverse rate

2000mm/min.

Lubrication

Spindle

Greased for life with Kluber Isoflex.

Slideways, indexing bolt and turret

12 point automatic lubrication, capacity 0.5 litres Mobil vactra 2 oil or equiv.

Coolant system

Standard

Centrifugal pump.

Application

Overhead supply and turret nozzles (selected on control panel)

Flowrate

25 litres per min.

Reservoir capacity

80 litres working, 120 litres max.

(Heavy coolant oils above ISO 20 may need a more powerful pump).

Dimensions

Weight

2700kg (less barfeed)

Dimensions

Barfeed

Type

Emi-Mec electric motor driven

Bar capacity

10 to 50mm. dia x 4 metres long.

Air

Supply

80 p.s.i. (5.62 Kg/cm.sq.)

Consumption typically

4 cub.ft/min (0.12 cub. m/min)

Control

Type

Computer Enhanced Turning CET special purpose system, based on the INTEL APX 188, 16 bit microprocessor with Mylar panel featuring touch sensitive keys and vertical line cursor function programming.

Manual controls

Manual control of all slides, spindle, coolant and turret from control panel.

Data input

a) Manual by means of function prompt and numeric keys. Function LED's give visibility of the line being programmed plus two lines before and two lines after.
b) By 'teach and learn' using electronic handwheel.

Functions controlled

Turret slide; feed rate, check and stop positioning. Index station position.
Sequencing of front, rear and top slides; including traverse to front slide. Selection of spindle speed and direction, auxiliary functions, collet operation and dwell times.
Provision for simultaneous operation of slides, with full overlap.
Provision for copier with stroke limiter.

Turret canned cycles

Feed forward (rapid, feed and rapid out); feed return; rapid return; woodpecker drill; feed bar to stop; tapping and multipass function to front slide.

Addition features

Quantity counter, diagnostic display.

Safety

Safety guard Spindle brake

Partially enclosed, with electro-mechanical interlock. Brake integral with spindle motor stops within 2 secs from 2600 rpm.

Machines incorporate safety and design features, salary devices, guarding arrangements and are supplied with such information as to their safe operation and use, that we believe, so far as it is reasonably practical, they are safe and in compliance with the legal requirements of the Health and Safety at Work etc. Act 1974.

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