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Screw Machine Shop: Multi-Spindle

Our screw machine shop is equipped with 78 multi-spindle automatic screw machines for manufacturing components such as hydraulic valve parts, shafts, plumbing fixtures, and automotive components. Each multi-spindle screw machine is equipped with multiple tools that perform different cutting operations sequentially. Components can be turned from solid as well as tubular stock of materials such as steel, brass, stainless steel, aluminum, and carbon steel.

Davenport Screw Machines

Ashley Ward, Inc operates 28 multi spindle Davenports. Our 5-spindle Davenport screw machines are best suited for producing component parts below 3/4" in diameter. The Davenport Model B multi-spindle screw machine at our machine shop is equipped with threading, countersinking, and 5th position burring attachments for turning components with distinct features such as external threads, internal threads, and axial holes.

Acme Gridley Screw Machines

Ashley Ward also operates 50 Acme Gridley multi-spindle screw machines with bar diameters up to 3 1/2". Our Acme Gridley screw machines have either 6 or 8 spindles. The multi-spindle automatic screw machines can also be used for turning materials with diameters as small as 0.2". The 6-spindle Acme chuckers also enable us to turn parts with eccentric surface features. Beside typical turning features such as external & internal steps, slots, knurls, and tapers, we also produce pieces rolled with circumferential markings.

Screw Machine Services: Multi-Spindle - Capabilities

Materials

Hot Rolled and Cold Rolled Steel Grades:
12L14
1000, 1018, 1045, 1035
1100, 1118, 1144, 1117, 1141
1200, 1215
8600, 8620

Steel - 4140
Stainless Steel - 303, 304, ETD 150
Carbon Steel
Aluminum
Brass
Bronze

Screw Machining Operations

Form Turning
Drilling
Reaming
Boring
Counterboring

Burnishing
Thread Rolling
Tapping
Knurling
Single Point Threading

Additional Operations (With Special Attachments) Broaching Cross Drilling Recessing Straddle Milling
Secondary Operations Spline Rolling
Welding
Straightening
Heat Treating
Centerless Grinding
Deburring
Drilling
Other Capabilities Assembly
Engineering
JIT Delivery
Outsourcing
Applications Shafts
Rollers
Push Rods
Gear Blanks
Spools
Bushings
Pulleys
Valve Stems
Pipe Fittings
Tubing
Hose
Spacers
Rivets
Nuts & Screws
Typical Screw Machined Part Features Axial Holes
Cross Holes
External & Internal Steps and Tapers
External Threads
Internal Threads
Intricate External Forms
Knurls
Recesses
Slots
Trepanned Holes
Undercuts
Wrench Flats
Minimum Diameter (8-Spindle Screw Machine 0.200"  
Maximum Diameter (8-Spindle Screw Machine) Hexagonal Stock: 2 ¼"
Round Stock: 3 1/2"
 
Minimum Diameter (6-Spindle Chucker) 0.200"  
Maximum Diameter (6-Spindle Chucker) Hexagonal Stock: 2 ¼"
Round Stock: 2 5/8"
 
Acceptable Drawing File Formats And Others
DXF
JPG
PDF
Multi-Spindle Screw Machining Advantages - Ideal for High Volume Production
- Consistently Accurate Results
- High Production Rate
 
Quality Control Measures  Continuous Improvement Program
Employee Training Programs
Fully Integrated Computerized SPC Capability
Investment in the Latest Quality Control Equipment
Organizational Commitment to Quality
Quality Incentive Programs
State-Of-The-Art Statistical Process Control Software
Vertical Integration of Processes (from cold drawing of steel to final assembly)
Certifications ISO 9001: 2008 Certified  
Awards  Ashley Ward has received numerous Performance Awards from Whirlpool Corporation for its outstanding quality performance throughout the year.
Industries Served Appliance
Automotive
Defense
Lawn & Garden
Marine
Medical

Equipment List

Cycle Time  1 .75 Seconds to 120 Seconds 
6-Spindle Acme Gridley Screw Machines  11 - Acme Gridley Screw Machines with Round Bar Stock Capacity up to 1 ¼" and Hexagonal Bar Stock Capacity up to 1 3/32"
3 - Acme Gridley Screw Machines with Round Bar Stock Capacity up to 1 5/8" and Hexagonal Bar Stock Capacity up to 1 13/32"
5 - Acme Gridley Screw Machines with Round Bar Stock Capacity up to 1" and Hexagonal Bar Stock Capacity up to 7/8"
5 - Acme Gridley Screw Machines with Round Bar Stock Capacity up to 2" and Hexagonal Bar Stock Capacity up to 1 ¾" 
8-Spindle Acme Gridley Screw Machines 1 - Acme Gridley Screw Machine with Round Bar Stock Capacity from 2 5/8" to 3 1/2", and Hexagonal Measured Across Corners, Maximum RPM - 530, and Tolerance of +/-.004
1 - Acme Gridley Screw Machine with Round Bar Stock Capacity up to 1 ¼" and Hexagonal Bar Stock Capacity up to 1 3/32"
1 - Acme Gridley Screw Machine with Round Bar Stock Capacity up to 2 5/8" and Hexagonal Bar Stock Capacity up to 1 3/32"
2 - Acme Gridley Screw Machines with Round Bar Stock Capacity up to 2" and Hexagonal Bar Stock Capacity up to 1 3/32"
5 - Acme Gridley Screw Machines with Round Bar Stock Capacity up to 1 5/8" and Hexagonal Bar Stock Capacity up to 1 3/32"
6-Spindle Acme Gridley Chuckers 1 - Acme Gridley Chucker with Round Bar Stock Capacity up to 2 5/8" and Hexagonal Bar Stock Capacity up to 2 ¼"
4 - Acme Gridley Chuckers with Round Bar Stock Capacity up to 1 1/4 "
5-Spindle Davenport Machines 23 - Davenport Model B (Oversize machine capacity)
Stock sizes: 7/8" Round, 3/4" Hex, 5/8" Square