The Hardinge Advantage Worldwide Leader in Super-Precision Hardinge Inc. One Hardinge Drive Elmira, NY 14902-1507 USA Phone: 800-843-8801 Fax: 607-734-3886 Internet: www.hardinge.com Hardinge Inc., 1997
Introduction Hardinge has provided workholding solutions for machine tool users for over a century. They are the only machine tool builder that also designs and manufactures a comprehensive range of workholding systems. This strategy has produced the most adaptable, flexible, complementary workholding and CNC turning machine packages available anywhere. The Hardinge spindle tooling systems for the CONQUEST and COBRA line of CNC lathes are specifically designed to match the spindles of these machines to meet all of your machining requirements. The complementary design of the collet seat/a2 spindle mount results in inherently quick changeover capabilities with the flexibility to change from through-spindle bar work to second operation and chucking work without the time penalties and alignment problems associated with other machine tool builders systems. The range and adaptability of Hardinge workholding systems for second operations, blanks and castings are second to none. These are adapted from standard off-the-shelf blank emergency - style step chucks for holding round and non-round shapes. Short grip length and minimum distortion are just two of the many benefits realized. A comprehensive range of peripheral accessories ensures that there is a Hardinge solution to most workholding problems within the capacity of the machines. For maximum reduction of setup time, the HQC Quick-Change collet system has a distinct advantage over other collet systems. Collet changeover takes less than two minutes and provides the benefit of true parallel gripping. For internal part location, Hardinge Sure-Grip expanding collets with machineable Dead-Length work stops enable equally effective solutions for machining parts with relationship to a pre-machined bore. Sure-Grip lever-operated counterbalanced 3-jaw chucks, introduced in 1996, benefit from the same combination of Hardinge workholding experience and technology for power chucks giving you maximum performance at minimum price. Large stocks of CNC lathe spindle tooling systems ensure that when a Hardinge customer has a workholding problem, Hardinge has the solution ready to ship. 2
The Hardinge Spindle with Collet Seat Cross Section of the Hardinge-Designed Spindle With Collet Seat and ANSI A2 Spindle Mount The collet angle, back bearing, spindle face, nose taper and locating shoulder are finish ground to ensure maximum spindle accuracies. Best possible spindle runout Total Indicator Reading (T.I.R.). Submicron accuracy is achieved on every spindle. 3
Advantages of the Hardinge Spindle Collet seats directly in the Hardinge spindle Minimum overhang from the spindle bearings assures that spindle accuracy is transferred directly to the workpiece Maximum rigidity and gripping power transferred to the part Minimum weight on spindle Maximum utilization of RPM Optimum T.I.R. Gripping force directly over the workpiece Superior tolerances and finishes Capable of using maximum machine stroke capacity Quick changeover collet draw tube is easily and accurately adjusted from the back of the spindle Longer tool life Ability to use a wide variety of workholding devices collets, step chucks, expanding collets, fixture plates, Dead-Length systems, quick-change collets, 3-jaw chucks and others 4
Hardinge Spindle Design Other CNC Lathe Spindle Design Other Spindles Use of a Collet Adapter is a Compromised Solution The collet is mounted in an adapter, creating an extreme overhang from the spindle bearings. Any error in the spindle is multiplied by the overhang distance. This compromise solution : Is not rigid Is not easily adjusted Creates poor T.I.R. Reduces the work envelope Creates excessive overhang Is not quick changeover 5
Basic Workholding System for Hardinge CNC Lathes 3-Jaw Sure-Grip Power Chucks HQC Quick-Change Collets Sure-Grip Expanding Collets Wide Range of Workholding Products Universal Quick Changeover Bar and Chucking Systems Collet Step Chuck 3-Jaw Chuck Expanding Collets Quick-Change Collets All workholding operations are designed for repeatability with quick and efficient changeover. 6
First Operation Options Bar Work Solid Collets Hardened and ground bores Metric and inch sizes from stock Most accurate location Round, hexagon and square Decimal Collet Round Collet Special profiles made to order Serrated bores greater gripping power Master Collets and Pads Hardened and ground Round, hexagon and square Serrated bores greater gripping power Lower cost per bar size 16C, 20C and 25C versions Hex Collet Square Collet S-16 S-12 COLLETS Style S Master Collet System HQC Quick-Change Collet System Two minute collet changeover Hardened and ground bores True parallel gripping - accuracy & force Metric and inch sizes Round, hexagon and square configurations Greatest range ±1/64 on diameters under 2 ±1/32 on diameters over 2 Serrated bores greater gripping power HQC Quick-Change Collet System for CONQUEST T-Series Lathes 7
Second Operation Systems Pin Boring out emergency collet with pins in place COLLETS Step Collet End-for-End part in step collet Soft Collets Emergency Collets Bore to suit application Various size pilot holes various nose lengths available 3-pin design enables precise gripping pressure when boring out the collet Absolute precise concentricity bored in place matches spindle bearing T.I.R. Centrifugal force will not affect step chucks with closers 99% gripping around the part minimal distortion Short gripping length Reusable many times up to the bar capacity of the machine 8
Solid Stop with Adapter Solid Stop Ejector Stop Long Stop COLLETS Threaded Stops for Hard and Soft Collets Solid Stops Ejector Stops All have adjustable and machineable stop rods to suit your application Long Stops 9
Dead-Length Collet Dead-Length Step Chuck COLLETS/STEP CHUCKS Dead-Length Through Collet (Bar Work) Dead-Length Collets and Dead-Length Step Chucks Absolute length control regardless of gripping diameter variations Emergency styles bore to size on machine round or non-round shapes Hardened and ground to your workpiece diameter 10
Spider Step Chuck STEP CHUCK Workpiece Closer Stop Button Dead-Length Spider-Style Step Chucks Absolute length control regardless of gripping diameter variations Most accurate T.I.R. (only one moving part) Locates against the collet angle of the spindle Emergency styles bore to size on machine round or non-round shapes Hardened and ground to order 11
Work Stop & Spindle Mount Work Stop & Spindle Mount (Threaded arbor for quick loading off the machine) COLLETS Work Stop & Spindle Mount with Adapter (Long stem part with special locating surface) Dead-Length Work Stop Assembly Another Hardinge innovation for producing absolute length control using standard workholding components. 12
Closer Step Chuck End-for-End - Step Chuck With Two Gripping Diameters Closer STEP CHUCKS Step Chuck End-for-End - Step Chuck With Two Steps Step Chucks The Gem of Hardinge Workholding Systems Extends the collet gripping principle to the maximum chucking capacity of the machine tool Run at maximum RPM Minimal centrifugal force with step chuck and closer Infinitely adaptable round and non-round shapes Excellent for short grips no distortion Multiple grips ( end-for-end ) one machining sequence to completely finish the part Eccentrics with synchronized locations eliminate special workholding fixtures Hardened and ground to order 13
Closer STEP CHUCKS Workpiece Step Chuck Typical Short Grip with Hardinge Step Chucks 99% contact around the part location ensures maximum holding power without distortion No decrease in gripping force at high spindle speeds centrifugal force will not open the step chuck 14
Step Chuck for a Precision Die Casting STEP CHUCKS Hardened and Ground Step Chuck for a Non-Round Workpiece Non-round workpieces for accurate and secure gripping in a Hardinge step chuck eliminates 2-Jaw chucking and elaborate special fixtures Supplied off-the-shelf, Hardinge soft step chucks can easily be machined to receive irregular-shaped die castings. Hardinge can manufacture hardened and ground step chucks for your longer production runs. Our special workholding department can satisfy your requirements with short lead times. Step chucks are available with three or four splits to suit diverse workpiece configurations. 15
End-for-End Round Fixture in Single- Step Precision Step Chuck Fixture Loaded Off the Machine STEP CHUCKS Eccentric Part in Step Chuck (Counterweight not shown) Threaded Solid Step Chuck Special Applications Hardinge emergency spindle tooling systems and peripheral accessories are made to be adapted by the customer, on the machine that will be used for the production operation. For volume production or larger batch work, hardened and ground versions or other special features can be supplied, usually in a lead time of 4 to 5 weeks. 16
Precision Length Control using Stop Plate EXPANDING COLLETS Stepped Stop Plate to Locate on Counterbore Stop locates against bottom of trepan in workpiece Sure-Grip Grinding Arbors Sure-Grip Expanding Collet Systems For ID Gripping Internal grip workholding from 1/8 (3mm) to 4 (100mm) diameters on a series of 6 expanding arbor sizes Complete range of machineable work stops to ensure precision length control Collets will accept 1/64 (.4mm) variation of I.D. chucking diameter Heavy-duty machining capabilities using the Sure-Grip system, with or without tailstock support Collets can be machined to suit your applications 17
SPECIALS Special Shapes Hardinge has a special collet department dedicated to the manufacture of special-shaped collets and step chucks. Hardinge is world renowned for having the ability to produce very precise hardened collets for gripping extruded stock for bar work, as well as step chucks for gripping large round and irregular-shaped parts for first operation and secondary work. This department has complete facilities to either ram or wire EDM complex contours needed for gripping your workpiece. Lead time is usually between 3 to 4 weeks. Special Collets Hardinge manufactures collets for specialty machines. Call Hardinge Inc. at 800-843-8801. 18
5 and 6 Sure-Grip Power Chucks POWER CHUCKS Hardinge Power Chuck Mounted on Non-Hardinge Machine Tool 8 and 10 Sure-Grip Power Chucks Sure-Grip 3-Jaw Power Chucks Lever-Operated and Counterbalanced Minimize the inherent dynamic limitations of jaw chucks with reduced loss of gripping force at higher spindle speeds 60 x 1.5mm industry standard metric serrated master jaws low cost jaw replacement 90 x 1/16 industry standard inch serrations also available The only precision lever-operated, counterbalanced 3-jaw chucks that are priced to compete with non-lever operated, non-counterbalanced chucks Dynamically balanced to run super smooth 19
Other Hardinge Workholding Systems There are many additional Hardinge workholding systems available as standard off-the-shelf products designed to increase the scope of workpieces which can be held using Hardinge lathes, or Hardinge lathe spindle products. These workholding products can also be used on non-hardinge machine tools. Fixture Plates/Face Plates These plates are used to make special application workholding arrangements for parts that cannot be held using conventional Hardinge systems. Spindle Reducer Collet Adapters 16C-to-5C & 20C-to-16C Adapters enable the use of small-size collets in larger spindle capacity machines. There is also a 20C-to-16C step chuck adapter available for 20C machines. OTHER SYSTEMS Hardinge 16C Collet Block An A2-5 16C spindle nose block enables all of the 16C Hardinge lathe spindle tooling systems to be used for other machining processes. The same versatile and accurate Hardinge lathe workholding system can be used for subsequent operations, thus eliminating additional workholding and fixturing cost. The block has a pneumatically actuated collet open and close mechanism. 20
Bar Stock Pullers Bristol Wrench End View Wrenches for Workholding Devices ACCESSORIES Hardinge Spanner Wrench Knurling Tools Ejector Stops for Dead-Length Collets & Step Chucks Bushings and Tool Holder Collets Accessories Hardinge offers a complete line of accessories to complement their workholding products: Collet Wrenches and Spanners Bar Pullers and Knurling Tools Dead-Length Ejector Stops Bushings Collet Racks HARDINGE BROTHERS, INC., ELMIRA, N.Y. Rack For 35 5C Collets Rack For 28 5C Collets HARDINGE HARDINGE BROTHERS, INC., ELMIRA, N.Y. 21
Typical Parts Run On Hardinge Swiss-Turn Lathes SWISS-TURN Main & Sub-Spindle Collets and Carbide Guide Bushings Cross Section of Hardinge Swiss-Turn Spindle with a Workpiece If you manufacture parts with long length-to-diameter ratios, the Hardinge CONQUEST Swiss-Turn Lathe will improve your quality and productivity! The Hardinge CONQUEST ST Swiss-Turn CNC lathes are designed to produce parts that have large ratios (length-to-diameter.) These machines come with 16mm (5/8 ), 20mm (3/4 ), or 25mm (1 ) spindle capacity. Various live endworking, cross-drilling and sub-spindle options are available for each machine. Collets and Guide Bushings Hardinge manufactures the highest quality main spindle collets, sub-spindle collets and carbide guide bushings for all Swiss-type CNC Lathes. 22
Lineup of Hardinge Horizontal CNC Lathes Slant Bed Lathes CONQUEST T65-L Long Bed 2 1 2 Bar Capacity 12 Jaw Chuck Capacity Request brochure 1146 CONQUEST T65 2 1 2 Bar Capacity 12 Jaw Chuck Capacity Request brochure 1113 SUPER-PRECISION CONQUEST T51SP 2 Bar Capacity 10 Jaw Chuck Capacity Request brochure 1112 CONQUEST T51 2 Bar Capacity 10 Jaw Chuck Capacity Request brochure 1111 SUPER-PRECISION CONQUEST T42SP 1 5 8 Bar Capacity 8 Jaw Chuck Capacity Request brochure 1115 CONQUEST T42 1 5 8 Bar Capacity 8 Jaw Chuck Capacity Request brochure 1114 COBRA 65 2 1 2 Bar Capacity 10 Jaw Chuck Capacity Request brochure 1155 Gang Tool Lathes COBRA 42 1 5 8 Bar Capacity 6 Jaw Chuck Capacity Request brochure 1142 Flat Bed Lathes CONQUEST T42-L Long Bed 1 5 8 Bar Capacity 8 Jaw Chuck Capacity Request brochure 1140 CONQUEST GT27 & SUPER-PRECISION CONQUEST GT27SP 1 1 16 Bar Capacity 4 Jaw Chuck Capacity Request brochures 1144 (GT27) & 1145 (GT27SP) Swiss-Turn Lathes CHNC III & SUPER-PRECISION CHNC IIISP 1 1 16 Bar Capacity 5 Jaw Chuck Capacity Request brochures 1119 (III) & 1120 (IIISP) CONQUEST ST225 1 Bar Capacity Request brochure 1152 CONQUEST ST220 Better by 3 4 Bar Capacity design Hardinge design Request brochure 1151 CONQUEST ST216 5 8 Bar Capacity Request brochure 1150 23
Additional Applications of Hardinge Workholding Systems For more information: Brochure 2327 Part No. HA -0009500-2327 Catalog 2286 - Collets For Lathes Mills, Grinders and Fixtures Catalog Booklet 2285 - Precision Length Control Booklet -2316 - Basic Workholding Techniques Booklet A-151 - Secondary Operation Workholding Techniques Better Hansvedt by design is a trademark of Hansvedt Hardinge Industries, Inc. design All other marks indicated by and are trademarks of Hardinge Inc. All specifications subject to change without notice. 10MHI 997 Printed in USA 24