Droop & Rein HMC275 (8) Axis CNC Floor Type Horizontal Boring Mill Rebuilt 2000

One (1) Droop & Rein Model HMC 275, 8 Axis CNC 8” Horizontal Boring Mill

Specifications:

Spindle Diameter----------------------------------------------------------------------------------------------------- 8”

Spindle Speed------------------------------------------------------------------------------ 5 to 1500 RPM (140 HP)

Spindle Taper-------------------------------------------------------------------------------------------- 60 and Cat 50

Travel X-Axis--------------------------------------------------------------------------------------------------------- 40’

Travel Y-Axis------------------------------------------------------------------------------------------------------- 115”

Travel W-Axis-------------------------------------------------------------------------------------------------------- 48”

Combined W Ram & Z Spindle Travel ------------------------------------------------------------------------- 88”

Travel Z-Axis--------------------------------------------------------------------------------------------------------- 40”

Feeds: X Axis------------------------------------------------------------------------------------------- 0.01 -240 IPM

Feeds: Y Axis-------------------------------------------------------------------------------------------------------------

Feeds: W Axis------------------------------------------------------------------------------------------- 0.01 -240 IPM

Feeds: Z Axis------------------------------------------------------------------------------------------ 0.01 – 240 RPM

Equipped With:

Rotary table (B Axis 0.001°)----------------------------------------------------------------------------- 118” x 149”

B Axis Feed range @ 137” Dia.------------------------------------------------------------------------------ 346 IPM

Control ------------------------------------------------------------------------------------------ Heidenhain TNC 430

Angle Plates (2)--------------------------------------------------------------------- 49” (W) x 60” (D) x 120” (H)

Angular milling attachment---------------------------------------------------------------------- 90 HP, 1500 RPM

Speeder attachment

60 station ISO 50 tool changer

Thru Spindle High Pressure Flood Coolant systems

Chip conveyor

Major Machine Modification & Repairs

1.) Ball screws (80 mm)

2.) Indramat axis motors and drives

3.) Turcite anti-friction material and Tychoway linear bearings on X axis

4.) Lubrication systems

5.) Speeder Attachment (Max. Speed 6,000 RPM)

6.) Head balance system

7.) Axis feed back systems

8.) Fabric bellow covers on ‘Y’ axis

9.) Steel telescopic covers on ‘X’ axis

Features that were reworked during the 2000 Retrofit and Upgrade

Ram and spindle configuration

All electric’s

Renishaw tool probing

Thermal compensation ‘X' and 'Z' axis.

Catalogue Specifications. Information is believed to be correct but purchaser is advised to verify information by inspection.

Additional info:

Specifications and Work performed during Upgrade:

Major Machine New Features
1.) CNC 118" x 149" Rotary table
2.) Angular milling attachment w/90hp drive
3.) Speeder attachment
4.) 60 station ISO 50 tool changer
5.) Chip conveyor

Major Machine Modification & Repairs implemented in the year 2000.
1.) Ball screws
2.) Indramat axis motors and drives
3.) Turcite anti-friction material and Tychoway linear bearings on x axis
4.) Lubrication systems
5.) Coolant systems
6.) Head balance system
7.) Axis feed back systems
8.) Fabric bellow covers on ‘Y’ axis
9.) Steel telescopic covers on ‘X’ axis

Features that have been reworked include the following:
Ram and spindle configuration
All electric’s
Heidenhain TNC 430 control system
Renishaw tool probing
Thermal compensation 'X' and 'Z' axis.

Summary of sizes, Capacities, Speeds and Rates:
Spindle diameter ......................................................................................................................... 8" dia

Ram size (‘W’ axis) .......................................................................................................... 21.6" x 24.8"

Accuracy ‘X’, ‘Y’ axis
Positioning
Per ANSI std b5.54 any 60" length............................................................................................. 0.0002”
Repeatability............................................................................................................................. 0.0001”

Accuracy ‘Z’, ‘W’ axis
Positioning
PerANSI std b5.54 any 60" length................................................................................................ 0.001”
Repeatability............................................................................................................................. 0.0005”

‘Z’ axis (spindle)

Axis travel....................................................................................................................................... 40”
Axis feed........................................................................................................................ 0.01to 240 ipm
Axis rapid ............................................................................................................................... 240 ipm
Speed range .................................................................................................................. 5 to 1500 rpm
Spindle hp................................................................................................................................... 140hp
Hp/rev to max........................................................................................................................... 2hp/rev
Spindle taper................................................................................................................... 60 and cat 50
Max torque at spindle..................................................................................................... 141,000 in lbs.

‘W’ axis (ram)

Axis travel....................................................................................................................................... 48”
Axis feed....................................................................................................................... 0.01 to 240 ipm
Axis rapid ............................................................................................................................... 240 ipm
Combined ram and spindle travel...................................................................................................... 88”
Ram and boring spindle thrust............................................................................................... 17,000 lbs
Type of feed drive ball screw....................................................................................................... 80mm

‘X’ axis specification

Axis travel.................................................................................................................................... 40 ft
Axis feeds ................................................................................................................... 0.01 to 240 ipm
Axis rapid................................................................................................................................ 240 ipm
Type of feed drive ................................................ rack and pinion or ball screw. Eng. approval required.
Thrust continuous duty ........................................................................................................ 17,000 lbs

‘Y’ axis specification

Axis travel.................................................................................................................................... 115”
Axis feeds ................................................................................................................... 0.01 to 240 ipm
Axis rapid................................................................................................................................ 240 ipm
Type of feed drive ball screw .................................................................................................... 100mm
Thrust continuous duty ........................................................................................................ 17,000 lbs

Vertical column

Column size at base approx. .................................................................................................. 84” x 84”
Column weight excluding ram............................................................................................ 48 tons (est.)

Runway

Number of ways ............................................................................................................................... 4
Width over ways............................................................................................................................. 80”
Way width........................................................................................................................................ 8”
Floor plate area approx....................................................................................................... 318” x 180”
Floor plate capacity ........................................................................................................... 156,000 lbs
6. 6.6.) Angle plates (box type) 2 off ............................................................... 120"H x 49"F x 60"D
Control system
Type: ................................................................................................................... Heidenhain TNC 430
Axis: ..................................................................................................................... 8 axis and 1 spindle
Screen: ...................................................................................................................... 14” color screen
Content:
1.2 GB user memory
Qwerty keyboard
Dialog and ISO programming
Remote jog and hand wheel facility
RS 232, RS 422 and Ethernet interfaces.

Features

Non metallic way covers.................................................................................................................. yes
Way covers on x axis .................................................................................................... steel telescopic
Operator platform and ladder ......................................................................................................... yes
Operator work light ........................................................................................................................ yes

Vertically adjustable control

Station .......................................................................................................................................... yes
Spindle sag comp........................................................................................................................... yes
Thermal comp 'Z', 'X' axis ............................................................................................................... yes
60 station auto tool changer ISO 50 ............................................................................................... yes
Through spindle hi pressure, flood
Coolant air blast............................................................................................................. programmable
Via m codes for 3 coolant pressures ............................................................................................... yes

Option considered

Tool probing Renishaw ................................................................................................... optional extra

Speeder attachment

Max speed ............................................................................................................................ 6,000rpm
Max capacity at 1000rpm...................................................................................... 34hp peak 13hp cont.
Auto Drawbar Inc ............................................................................................................................ no
Coolant through spindle ................................................................................................................. yes
Auto mounting................................................................................................................................. no

Angular milling attachment

Capacity .............................................................................................................................. 90hp max
Max speed ........................................................................................................................... 1500 rpm
Auto mounting................................................................................................................................. no

Auto latch mechanism for

Attachments ................................................................................................................................... no
Storage rack for attachments............................................................................................................ no
Chip conveyor ............................................................................................................................... yes

CNC rotary table

Rectangular size table......................................................................................................... 118” x 149”
Capacity loads centered........................................................................................................ 156,800lbs
Fixture locating key ....................................................................................................................... yes
Center bore in table ....................................................................................................................... yes

‘B’ axis specification (table rotation)

Feed range, at 137” nominal dia. ................................................................................ 0.865 to 260 ipm
Rapid motion at 137”dia .......................................................................................................... 346 ipm
Index accuracy .................................................................................................. +/- 3.6 seconds of arc
Index repeatability ............................................................................................. +/- 1.5 seconds of arc
Programming limit .................................................................................................... 0.001 of a degree

‘U’ axis specification (linear table travel)

Axis travel.................................................................................................................................... 118”
Axis feeds ................................................................................................................... 0.01 to 393 ipm
Axis rapid................................................................................................................................ 393 ipm
Type of feed drive ball screw..................................................................................................... 125mm
Positioning accuracy ....................................................................................................... 0.000118”/40”
Repeatability ................................................................................................................... 0.00078”/40”

Est. total weight as detailed 250 tons (550,000 lbs)