Machining

This is the machining center. With 141 CNC machines and 96 conventional machines, this center can produce anything from a small nut to airplane parts. It has made highly complex parts and can match tolerances up to a .0001 inch. Their capabilities include milling, turning, grinding, honing, and lapping.

This is the only machining center with seven-axis machines and likewise the only place that has people qualified to run and program these machines. These machines provide unmatched versatility and efficiency.

The CNC Mills are some of the most sophisticated machine tools. They range from three axis to seven axis. The smallest work envelope is 14” x 14” x 40” and the largest is 15” x 72” x 76”. All machines are on a “ Preventative” maintenance schedule as well as tied to a Direct Numerical Control (DNC) System for programming and downloading of files for speed, accuracy and recording.

This area has received performance awards and a delivery award for the first quarter in 2004.

Machining Capabilities:

CNC Mills
Rock Island Arsenal CNC Mills are some of the most sophisticated machine tools in the "Free World". They range from three axis to seven axis where the smallest work envelope is 14"X14"X40" to the largest of 156"X72"X76". All are on a "Preventative" maintance schedule as well as tied to a Direct Numerical Control (DNC) System for programming and downloading of files for speed, accuracy and recording.

TYPES & CAPACITIES
3 Axis Milling Centers:
4 Axis Milling Centers:
Max. Work Length = 94.48" (X)
Max. Work Length = 84." (X)
Max. Work Height = 47.25" (Y)
Max. Work Height = 72." (Y)
Max. Work Width = 19.68" (Z)
Max. Work Width = 60." (Z)
30 HP Spindle Motor - 15-2,000 RPM
Rotary Axis Table = 360. DEG. (B)
Load Capacity = 10,000 LBS.
60 HP Spindle Motor - 20-4,000 RPM

Load Capacity = 8,000 LBS.

5 Axis Milling Centers:
7 Axis Milling Centers:
Max. Work Length = 60." (X)
Max. Work Length = 156." (X)
Max. Work Height = 72." (Y)
Max. Work Height = 72." (Y)
Max. Work Width = 62." (Z) (Spindle Horizontal)
Max. Work Width = 30." (Z) (Quill)
Max. Work Width = 62." (Z) (Spindle Vertical)
Max. Z Column Travel = 18." (Z)
40 HP Spindle Motor/20-4,000 RPM
Pallet Saddle Travel = 28." (W)
Rotary Axis Table = 360. Deg. (B)
Rotary Axis Table = 360. Deg. (B)
Load Capacity = 4,500 LBS.
(B Axis has 161." of Indexable Clearance)

Pallet Tilt = -2/270 Deg. (A)>

Pallet Sizes = 60." X 60." & 60." X 120."

Max. Load w/Pallet = 31,000 LBS.

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CNC Lathes
TYPES & CAPACITIES
2 Axis Horizontal Turning Centers:
4 Axis Horizontal Turning Centers:
Max. Chuck Diameter = 24.0"
Max. Part Length = 40"
Max. Bed Length = 144.0"
Max. Part Diameter = 36"
Max. Part Diameter = 33.0"
2 Turrets, 1 Upper, 1 Lower
60 HP Spindle Motor/12 - 1200 RPM
18" Diameter Chuck
TailStock
50 HP Spindle Motor/16 - 1600 RPM
Bar Feed up to 4.0" Stock

Vertical Turret Lathes:
Live Spindle Horizontal Turning Centers:
48" and 60" Diameter Tables
Max. Part Working Length = 35.5"
Table to Bottom of Ram = 66.0"
12" Diameter Chuck
60 HP Table Motor/4 - 333 RPM
35 HP Spindle Motor/23 - 3500 RPM
"C" Axis Thread Cutting Capability
Contouring Spindle "C" Axis
Vertical Inline Rotating Tool
Tool Probe
25 HP Motor/15 - 2200 RPM
Turret Mounted Probe

Swing-Up Tailstock

In-Line and Right Angle Direct Drive Rotating Tools

5 HP Drive Motor/20 - 4120 RPM

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Deep Hole Boring
RIA-JMTC has (2) CNC Machines, (2)Conventional Gun Drill Machines, and a Boring Lathe.
One of the CNC machines is equipped to work with HELLER BTATM drilling tools and is capable of doing skiving and roller burnishing. The working capacity is as follows:


OPERATING MODE: ROTATING WORKPIECE AND NON-ROTATING TOOL.

100 HP-SINGLE SPINDLE
MAX. BORING DEPTH= 160"
SWING DIA. OVER BED= 25"
SOLID BORING MINIMUM= 1.06"
SOLID BORING MAXIMUM= 6.00"
(AVAILABLE UP TO 5.5")
COUNTER BORING MINIMUM= 1.257"
(AVAILABLE UP TO 1.85")
COUNTER BORING MAXIMUM= 10.0"
(AVAILABLE UP TO 7.5")

The second CNC machine's working capacity is as follows:

OPERATING MODE: ROTATING WORKPIECE AND COUNTER-ROTATING TOOL.
(PROVIDES MORE ACCURATE DRILLING RESULTS, RELATIVE TO AXIAL DEVIATION)


100 HP-SINGLE SPINDLE
MAX. BORING DEPTH= 157"
SWING RANGE= 35" TO 39"
SOLID BORING MINIMUM= 0.708"
SOLID BORING MAXIMUM= 7.000"
(AVAILABLE TOOLING= 0.972" TO 5.500")
COUNTER BORING MINIMUM= 1.181"
COUNTER BORING MAXIMUM= 8.739"
(AVAILABLE TOOLING= 1.850" TO 6.377")
STEADY REST CAPACITY= 2.750" TO 23.620"
MAX. PART WEIGHT w/2 STEADY RESTS= 11,000 LBS.
MAX. WEIGHT PER STEADY REST= 5,500 LBS.

(2) GUN DRILLING MACHINES



10 HP-SINGLE SPINDLE
10 HP-SINGLE SPINDLE

MAX. DRILL DIA.= 1.0"
MAX. DRILL DIA.= 1.0"

MAX. DRILL LENGTH= 42.0"
MAX. STROKE= 60.0"

MAX. STROKE= 26.0"
FOUR AXIS

FOUR AXIS
TABLE SIZE= 23.0" X 34.0"

TABLE SIZE= 24.0" X 36.0"

VERTICAL POSITION, C/L HOLE TO TABLE

(+1.75" TO +15.75")

CROSS POSITION, C/L HOLE TO C/L OF TABLE

(-12.0" TO +12.0")

DEEP HOLE BORING LATHE

Converted to BTA Deep Hole Drilling with Rotating Work Piece & Stationary Tool

30 HP-SINGLE SPINDLE
MAX. BORING DEPTH= 96.0"
MAX. SWING CAPACITY= 25.0"
SOLID BORING MINIMUM= 0.984"
SOLID BORING MAXIMUM= 7.000"
(AVAILABLE TOOLING= 1.060" TO 5.500")
COUNTER BORING MINIMUM= 1.181"
COUNTER BORING MAXIMUM= 8.739"
(AVAILABLE TOOLING= 1.850" TO 6.377")

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EDM Electronic Discharge Machining
Rock Island Arsenal has been using EDM for over 20 years in the manufacture of components for artillery gun systems. We currently have six CNC operated machines used for Tool room, Prototype and Production work.