The Doosan VCF 850LSR 5-axis traveling column VMC with tilting head offers a large work envelope.
Doosan has introduced VCF850LSR, a vertical machining center (VMC) featuring a traveling column design with a tilting spindle B-axis head. The VCF series is designed to machine a wide range of parts while utilizing up to five axes simultaneously.
"This versatile design allows for machining on multiple sides of a workpiece at once," said a company spokesperson. "The head can rotate 110° on either side of vertical, enabling the VCF850LSR to machine large and complex parts in a single set-up, eliminating costly fixtures and downtime. With its included 500 mm (19.685 inches) rotary table, up to five sides of a part can be accessed, further increasing the machine's capabilities."
Bed, Column and Saddle
The bed is a rigid, one-piece casting made from fine grain Meehanite cast iron with heavy ribbing designed to help prevent vibration and deformation during heavy cutting. Extra wide spacing of the roller guideways are designed to support the saddle, regardless of the load distribution on the table. "The table is fully supported by the saddle in all positions with no overhang," said the spokesperson. "Featuring a traveling column design, the table and the workpiece remain locked during machining. This design provides a uniform load to the guideways, ball screws and motors."
Guideways
"All axes are of a roller linear motion guide type for higher stiffness, accuracy and surface finish than more common ball bearing guide types," continued the spokesperson. According to the company, the axes are heavy duty (X: 45 mm / 1.772", Y: 45 mm / 1.772", Z: 45 mm / 1.772") and widely spaced (X: 655 mm (x2) / 25.787", Y: 720 mm / 28.346", Z: 560 mm / 22.047"). "Roller guideways are three times more rigid with two times more life than ball bearing guideways and provide for optimal weight and force distribution," said the spokesperson.
Ball Screws and Axis Drives
According to the company, each axis is driven by a high precision double-nut ball screw which is centered between the guideways and supported on both ends by angular contact thrust bearings. All ball screws are cooled by circulated, refrigerated oil at all critical components including the ball nut, support bearings and the motor housing. "This system, coupled with a double pretension design, provides outstanding positioning repeatability with virtually no thermal growth," said the spokesperson. According to the company, all axes have large diameter ball screws (X: 63 mm / 2.480", Y: 50 mm / 1.968", Z: 50 mm / 1.968") that are directly connected to oversize A.C. servo drive motors without gears or belts. This design helps to eliminate backlash.
Glass Scales on X, Y and Z Axes
"The X, Y and Z axes utilize absolute type linear glass scales for higher positioning accuracy that do not require referencing at power up," said the spokesperson. "The scales virtually eliminate the impact of slides and ball screw thermal expansion and backlash. This improves the ability to hold tight part tolerances with fewer offset changes."
Rotary Table
According to the company, the supplied Doosan D500 rotary table allows for machining on multiple faces of the workpiece without having to re-fixture. "This allows for reduced number of set-ups and much higher precision of the finished component," said the spokesperson. "With 4 + 1 axes of simultaneous motion, very complex shapes are able to be produced, and when coupled with the machine's ability to rotate the spindle head (+110° / -110°), it is possible to machine five sides of a workpiece in a single set-up."
Built-In Spindle Motor
According to the company, the 12,000 RPM built-in drive spindle motor has 18.5 / 22 kW (25 / 29.5 HP) and 147.25 nm (108.60 ft-lbs.) of torque. "This design promotes thermal stability and keeps vibration at higher RPM to an absolute minimum," said the spokesperson. "A refrigerated cooling control system circulates cooling oil around the spindle in order to maintain a constant temperature, increasing accuracy regardless of the ambient temperature of the cutting conditions. The CAT 40 Big Plus spindle system is a true cartridge type unit supported by high precision, permanently grease lubricated ceramic ball bearings with a spindle acceleration / deceleration time of 0 - 12k (1.3 seconds) / 12k - 0 (1.5 seconds). An encoder is attached to the spindle to allow rigid tapping, further increasing productivity."
B-Axis Tilting Headstock
The headstock is mounted to a rigid swiveling base which is driven by a heavy duty and high precision worm gear. "This design allows the spindle to present tooling to the workpiece at any angle between +110° to -110° from vertical, enabling machining on multiple sides of the workpiece at once," said the spokesperson. The B-axis is capable of 900 ft-lbs. of torque during contour machining or can be locked down by means of a hydraulic piston with 1,475 ft-lbs. of torque for heavy duty cutting. "Oil cooling around the assembly maintains constant temperature, regardless of the cutting condition, to ensure accuracy," said the spokesperson.
Big Plus Spindle System
According to the company, the Big Plus spindle system and tooling utilizes simultaneous taper and flange contact between the machine spindle and tool holder as well as complete interchangeability with existing machines and tools. Upon mounting the toolholder into the machine spindle, contact occurs prior to clamping. Due to the retention force, the taper of the tool holder expands the machine spindle in its elastic range. "The tool is pulled further in until the tool flange touches the spindle face for maximum rigidity," said the spokesperson.
Automatic Tool Changer
The 60-tool chain type double arm ATC is servo motor driven and is designed to provide reliable exchange of tools with a tool to tool time of 1.5 seconds.
20 Bar (230 PSI) Through Spindle Coolant System (TSC)
"A dedicated positive displacement pump delivers the coolant directly to the tool tip," said the spokesperson. "The immediate benefit is more aggressive feeds and speeds can be maintained throughout the cutting process. There is also no need to stop and adjust coolant nozzles which increases both in cut time and operator safety." According to the company, a Cyclone filter protects the spindle and the vital rotary union from contamination. "This filter does not require the use of bags, reducing maintenance costs and downtime," said the spokesperson. "The 360 liter (95 gallon) tank stores an ample supply of coolant and is isolated from the machine bed to help prevent heat transfer."
Portable Manual Pulse Generator
The hand-held Manual Pulse Generator allows each axis to move in increments of x1, x10 or x100. According to the company, this design makes fixture or part alignment quick and easy. The 10-foot cord gives full access to the machine. "The magnetic back allows for one-handed operation with the MPG being conveniently held in place on the machine table or guarding," said the spokesperson.
Program and Data Protection Key Switch
According to the company, the keyed switch enables the protection mode for both the program and offset data. Removing the key limits access to only authorized personnel. In the unprotected position the key cannot be removed and all data is available for edit.
PCMCIA/USB Card Slot
The FANUC 31-iB series control is equipped with a slot for a PCMCIA and USB port on the control next to the display. A PCMCIA memory card can be used to upload and download programs as well as drip feed directly from the card. "Programs running from the card will take the same time to run as a program that is stored in the control memory," said the spokesperson. "It is possible to search through and restart anywhere in a program as long as it contains line numbers. The USB port does not allow a user to drip feed; it is only for uploading and backup of programs and parameters."
Swiveling Operator Panel
According to the company, the control is mounted on a pendant that can be positioned anywhere along the door opening via a rail and can swivel up to 180°. "This allows the operator a clear view of the working area wherever the workpiece is positioned or machining is taking place," said the spokesperson.
For more information contact:
Dave Barber
General Manager of Marketing
Doosan Infracore Machine Tools
19A Chapin Road
Pine Brook, NJ 07058
973-618-2500
dbarber@doosan.com
www.doosanmachinetoolsusa.com
Southwest
S. TX
Jack Butts
AmTTech
10010 Houston Oaks Drive
Houston, TX 77064
832-912-2000
sales@amttech.net
www.amttech.net
N. TX
AmTTech
3301 Pleasant Valley Lane
Arlington, TX 76015
832-912-2000
sales@amttech.net
www.amttech.net
OK
Jack DeLaughter
Machine Tool Specialties, Inc.
5280 S. 100th East Avenue
Tulsa, OK 74146
918-622-0018
jackde@machinetoolspecialties.com
www.machinetoolspecialties.com
LA
H&S Machinery Corp.
1941 Industrial Blvd.
Harvey, LA 70058
504-347-5707
sales@hsmachinery.com
www.hsmachinery.com
S. NM, El Paso, TX
Dick Short
Adams Machinery
215 S. Rockford Dr. #101
Tempe, AZ 85281
480-968-3711
Dick@adamsmachineryaz.com
www.adamsmachineryaz.com
AR
Rick Boedeker
Technical Machinery
133 Kelly Drive
Rogers, AR 72756
479-636-1884
boedeker@techmach.net
N. NM
Rick Samuelson
Foothills Machinery Sales
6855 West 116th Avenue
Broomfield, CO 80020
303-466-3777
rick@foothillsmachinery.com
www.foothillsmachinery.com
Southeast
AL, MS, FL Panhandle, TN
Steve Wherry
Cardinal Machinery
7535 Appling Center Drive
Memphis, TN 38133
901-377-3107
info@cardinalmachinery.com
www.cardinalmachinery.com
NC, SC, GA
Carl Amick
Machinery Solutions, Inc.
1681 Two Notch Road
Lexington, SC 29073
803-359-7000
info@machinerysolutions.com
www.machinerysolutions.com
VA
Don Deakyne
Production Machinery Assoc., Inc.
475 McLaws Circle, Suite 3-A
Williamsburg, VA 23185
757-258-5800
drd@productionmachinery.net
www.productionmachinery.net
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Kevin McCarthy
APT Machine Tools
4250 St. Johns Parkway
Sanford, FL 32771
321-280-2481
machinesalesapt@aptmtools.com
www.aptmtools.com
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David Barclay
Syracuse Supply Machine Tools
43 Co. Rte. 59
Phoenix, NY 13135
315-695-2008
Kevin McCarthy
Syracuse Supply Machine Tools
575 Ludwig Avenue
Cheektowaga, NY 14227
716-893-3643
sales@syracuse-supply.com
www.Syracuse-Supply.com
CT, ME, MA, NH, RI, VT
Alan Lockery
ABLE Machine Tools Sales, Inc.
800 Silver Street
Agawam, MA 01001
413-786-4662
www.ablemts.com
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Bruce R. Yeager
Allegheny Machine Tool Systems, Inc.
632 E. McMurray Road
McMurray, PA 15317
800-269-4090
724-942-4451
www.allegmach.com
E. PA
Randy Heck
Precision Machine Tool Solutions
571 Mountain Home Road
Sinking Spring, PA 19608
610-670-6780
rheck@pmtscnc.com
www.pmtscnc.com
MD, DE, DC
Mike DeMarti
MD Machinery Inc.
1994 Conan Doyle Way
Eldersburg, MD 21784
410-795-4694
mdmachinery@comcast.net
Metro NY, NJ
Angelo Pennetti
21st Century Machine Tools
1140 Bloomfield Ave. Ste. 228
West Caldwell, NJ 07006
973-808-2220
kim@21stcmt.com
Midwest
N. & Central IL, N.W. IN
John Schneider
520 Machinery Sales
620 Estes Ave.
Schaumburg, IL 60193
888-520-1768
John@520machinery.com
www.520Machinery.com
S. IL, E. MO
Technical Machinery
11 Harvest Point
Collinsville, IL 62234
618-346-4346
S. & E. IN
Technical Equipment Sales Co.
4501 Earhart Lane, Ste A
Fort Wayne, IN 46809
800-852-0582
mschlater@techequip.com
info@techquip.com
www.techequip.com
IA
Mark Gehl
Hales Machine Tool, Inc.
809 6th Ave. N.W.
Cascade, IA 52033
563-852-3595
www.halesmachinetool.com
KS, W. MO
Dennis Daugherty
Professional Sales Services, Inc.
2661 W. Esthner
Wichita, KS 67213
316-941-4542
dennied@pss.kscoxmail.com
KY, S. OH
Lou Olson
Technical Equipment Sales Co.
10165 International Blvd.
Cincinnati, OH 45246
513-874-0160
info@techequip.com
www.techequip.com
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Technical Equipment
6900 Southpointe Pkwy., Ste. A
Brecksville, OH 44141
800-852-0582
MI
Pete DeSilva
Phoenix Machine Tools
45130 Polaris Court
Plymouth, MI 48170
734-455-9122
MN, ND, SD
Tim Hales
Hales Machine Tools, Inc.
2730 Niagara Lane N.
Minneapolis, MN 55447
763-553-1711
www.halesmachinetool.com
WI
Midland Machinery, Inc.
395 Forest Grove
PO Box 5
Pewaukee, WI 53072
262-691-5700
office@midlandmachinery.net
www.midlandmachinery.net
West
Southern CA
Angelo Ariondo
Protek CNC Sales Corp.
65 West Easy Street #104
Simi Valley, CA 93065
805-579-9995
protekm@pacbell.net
sg.protekm@pacbell.net
www.protekcnc.com
Northern CA, NV
Jim Selway
CNC Solutions
1610 Centre Pointe
Milpitas, CA 95035
408-586-8236
WA, OR
Mark Harris
CNC Machine Services, Inc.
7808 184th St. SE
Snohomish, WA 98296
866-788-4500
info@cncmachineservice.com
www.cncmachineservice.com
MT, ID, UT, W. WY
Jim Grisley
J.M. Grisley Machine Tools, Inc.
1485 South 300 West
Salt Lake City, UT 84115
801-486-7519
sales@jmgrisley.com
www.jmgrisleymachine.com
N. NM, CO, E. WY
Rick Samuelson
Foothills Machinery Sales
6855 West 116th Avenue
Broomfield, CO 80020
303-466-3777
rick@foothillsmachinery.com
www.foothillsmachinery.com
AZ
Dick Short
Adams Machinery
215 S. Rockford Dr. #101
Tempe, AZ 85281
480-968-3711
Dick@adamsmachineryaz.com
www.adamsmachineryaz.com