Hardinge HLV turning machine lathe

Hardinge HLV turning machine lathe

Super-precision preloaded Collet Capacity
Ball Bearing Spindle
Collet seats directly in spindle
Precision Taper Nose Spindle for mounting Tooling
Solid one-piece totally enclosed Headstock frame
Infinitely variable Spindle Speeds to 3,000

PRECISION SPINDLE
The Hardinge super-precision preloaded ball bearing spindle is mounted in a solid one-piece totally enclosed headstock housing for maximum rigidity and sustained accuracy.
The bearings require no adjustment and are permanently lubricated to operate continuously at all speeds without attention.
Preloading eliminates all end play or radial play and assures the turning of true pieces.
The collet seats directly in the hardened and precision-ground spindle, thus eliminating troublesome sleeves and adaptors that introduce costly inaccuracies.
The rigidity provided for sustained accuracy also provides proper support for work when cutting with carbide-tipped tools.

FAST LEVER COLLET CHUCKING
Extra Equipment for Small Batch Production
The standard built-in handwheel for the spindle provides a safe, convenient means for rotating the spindle by hand, a must when indicating or inspecting precision work. This feature means increased production at lower cost.
Positive collet gripping is fast and easy with the lever-operated collet closer, which may be fitted as an extra. Collet tension is instantly adjustable without the use of tools. A single movement to the left closes the collet. A single movement to the right opens it.

HANDWHEEL FOR SPINDLE
The rigid carriage on this machine is made in one solid piece. The solid full-bearing carriage gives maximum support to the cross slide and cutting tool, enabling the machine to withstand heavy cuts and high work speeds.
The long, rugged full-bearing cross slide gives maximum accuracy on facing work.
The carriage has a full bearing on the front dovetail, a full bearing on the top of the bed, and a full bearing on the rear dovetail.
The dovetail design of the carriage and bed ways means that all tool-carrying slides are dovetailed together for maximum rigidity and accuracy. The carriage dovetail bed ways are pressure lubricated.

The apron for the carriage is of the double-wall type, completely enclosing precision gears and clutches. The entire carriage gear train runs in a sealed oil bath.
The easy-operating snap-up clutches for the longitudinal and cross slide feed are properly located for convenient operation.

DIRECT READING CROSS SLIDE DIAL
Hardinge black and white dials are the easiest reading feed screw dials developed as standard lathe equipment.
In the operation of a lathe, no other item receives such close attention by the operator as the feed screw dials. Dial graduations control the size of the part produced.
Each direct-reading graduation is equal to .001 inch on work diameter.

EASY READING BLACK AND WHITE DIALS
CARRIAGE HANDWHEEL DIAL
Accurate control of carriage movement is as essential in precision work as positive control of cross slide movement.
To secure full value from this modern high-speed precision lathe, Hardinge includes an easy-reading dial with the carriage handwheel, providing a fast, accurate, and convenient way of controlling the travel and positioning of the carriage.
Dial graduations are .010 inch.

PRECISION GEAR BOX FOR THREADING
The Hardinge Lathe has a precision quick-change gearbox designed and built for threading. There has been no compromise as with most lathe gearbox designs, where the gearbox is run constantly and used for both power feed of the carriage and threading operations.
The gearbox is instantly engaged or disengaged and used only for thread cutting. The result is obvious: the original accuracy is sustained for threading operations.
Here again, this lathe is designed to speed production by making everything simple for the operator. Look at the clear, easy direct-reading gearbox thread chart. It is not confusing with a mixed dual purpose as are the plates on other lathes which give both threads and feeds.
Standard threads, including pipe threads, are immediately available through the gearbox. Refer to the specification section on page 11. By the use of outside change gears, pitches to 250 threads per inch can be cut.

PRECISION LEAD SCREW FOR THREADING
WITH AUTOMATIC THREAD LENGTH CONTROL FOR CARRIAGE
Users confirm that the Hardinge Lathe is the fastest threading standard lathe available. The automatic thread length control makes threading easy at turning speeds, even when threading to a shoulder or into a blind hole without a threading relief. With this control, we have eliminated the slow, troublesome threading dial. The lead screw nut is engaged at the start of the thread and remains engaged until the thread is completed. These positive stops accurately control the automatic stopping of the carriage for either left or right-hand threads at the starting and finishing positions.
The lead screw is used for threading only, so its original accuracy is sustained for precision threading operations.

The quick-acting tool post slide for threading is standard equipment on the Hardinge Lathe.
This feature, coupled with the automatic thread length control, simplifies threading to the point where tool room thread cutting is no longer an art. Anyone can cut good threads fast on the Hardinge Lathe.

At the end of the threading cut, the threading tool is instantly cleared from the work for the return of the carriage to the next cut. This is accomplished by means of a ball-handled lever actuating the tool post slide entirely independent of the tool post feed screw.

During the threading operation, the cross slide and tool post slide feed screw are fed in before each threading cut. Feed screws are never reversed, saving time and assuring correct threads even with inexperienced operators.

The four illustrations on this page show the position of the quick-acting handle at each position during a threading cut.

SHOWN IS THE HARDINGE LATHE SET UP FOR THREADING

The threading tool is in the starting position. Notice the position of the quick-acting slide handle A. See the illustration at the right for the next tool position.

The threading tool is at the end of the cut. The tool and carriage were stopped exactly at this predetermined point by the automatic thread length control. Refer to the illustration on the left for the next tool position.

The quick-acting handle A has been moved from the right to the left, withdrawing the tool from the work. The tool is now clear of the work, and the carriage is returned to the starting point by the power-operated lead screw.

The automatic thread length control has stopped the carriage at the starting position. The quick-acting handle A is placed in the right-hand position. The cross slide is fed in for the next threading cut.

HARDENED AND PRECISION-GROUND STEEL BED WAYS RESIST WEAR

SOLID CONSTRUCTION: No weakening holes or slots.

CHIPS CANNOT FALL ON ANGULAR GUIDE WAYS: Ensures a clean working surface.

EASY TO CLEAN: No slots or undercuts to wedge chips.

PROVEN DESIGN: Used for years on Hardinge chucking machines.

Analytical consideration of bed construction for opposing cutting strains brought about the dovetail carriage and bed design.

Because of the design of the Hardinge bed, there can be no lifting action of the carriage as the back 30° way changes the pushing-away force into a pulling-down action. This ensures bearing surfaces on the 30° back way and the top way.

On the other hand, the conventional bed design results in a lifting action as the conventional inverted vee way changes the pushing-away action into a lifting-up action, reducing the number of bearing surfaces. Lifting action in the conventional bed design is admitted by the many hold-down bolted sections for the carriage.

This lifting action of the carriage causes chatter, which means vibration and wear. Because there is no lifting action in the Hardinge construction, there is steady support, ensuring accuracy and a fine finish. Further, the Hardinge construction covers the angular ways so that chips cannot collect on the guideway surfaces.

The heavy box-section bed is made of a seasoned alloy semi-steel casting. The Hardinge dovetail bed ways are made of alloy steel, hardened and precision-ground for sustained accuracy.

Between the self-contained bed and the welded steel pedestal base, there are three spherical seats. Two of these spherical seats are at the headstock end of the bed, and one spherical seat is at the tailstock end, providing a three-point bearing for sustained accuracy.

HARDINGE MACHINE TOOLS

The correct design and substantial construction of the tailstock are clearly apparent. Throughout, consideration was given to the fact that the tailstock should have features to support easily any load in working with a preloaded ball bearing headstock.

FEATURES

Constant Full Bearing for Spindle
Regardless of position, as the spindle travels, it never loses any of its precision bearing surfaces in the tailstock body.

Solid Tailstock Body
The body is not split, unlike ordinary designs that provide for a spindle lock. This ensures a uniform inside diameter, offering a precision bearing for the tailstock spindle.

Ease of Operation
The tailstock handwheel is equipped with a ball bearing to absorb tool thrust, providing an exceptionally fine feel for precision work.

Precision Control
The spindle is graduated in eighths of an inch, and the handwheel features a large, adjustable, easy-to-read black and white dial graduated in thousandths.

Spindle and Base Lock
A lever operates two substantial half-nuts to securely hold the spindle in any desired travel position. The tailstock itself is clamped in any desired position along the bed using a lever-operated clamp bolt.

Hardened and Ground Spindle
The spindle has a travel of 3 inches. Standard shank tools are automatically discharged from the tailstock spindle at the end of the right-hand travel.

TOOL COMPARTMENT

The high speed and precision of the Hardinge Lathe will increase production efficiency. Regularly used tooling can be kept in the built-in tool compartment, saving operators valuable time by eliminating trips to distant tool cupboards.

The collet tray provides a convenient space for collets and centers within easy reach of the operator. Both the collet tray and tool storage shelves are made from smooth, splinter-free, non-metallic material.

REGULAR EQUIPMENT

Fully enclosed headstock with preloaded ball bearing spindle (1 collet capacity).

Drive Plate and Headstock Center.

Draw Spindle and Spanner Wrench.

Quick Change Gear Box for precision cutting of 27 different threads.

Set of five change gears.

Completely enclosed carriage and apron.

Independent electric variable power feed drive for carriage and cross slide.

Finger-tip snap-up clutches for longitudinal and cross feed.

Preloaded ball bearing lead screw reserved for threading only.

Automatic lead screw stop with adjustable stop collars.

Quick-acting tool post slide for threading.

Easy-reading black and white feed screw dials.

Easy-reading black and white carriage handwheel dial.

Solid full-bearing carriage.

Solid, hardened, and ground steel dovetail bed ways.

Constant full-bearing tailstock with No. 2 Morse taper.

Welded steel base with oil-type chip tray and coolant sump.

Handwheel control for variable speed drive.

Tool storage compartment with collet board.

Variable speed drive, complete with a 2-speed reversing motor and controls for operation on 400–448 volts, 50 cycle, 3-phase and neutral. (Specify desired current.)

HARDINGE HIGH SPEED
PRECISION LATHE
MODEL HLV

SPECIFICATIONS
FOR HARDINGE HLV 10-IN. TOOLMAKER'S LATHE

Swing Over Bed: 11"
Swing Over Carriage: 9"
Swing Over Cross Slide: 5"
Distance Between Centers:
Tailstock Flush: 18"
Tailstock Overhung: 20"
Hole Through Spindle: 1 1/4"
Spindle Bearing Construction: Preloaded Ball Bearing
Variable Spindle Speeds: 125 to 3000 RPM
Collet Capacity - 5C HARDINGE:
Round: 1 1/16"
Hexagon: 7/8"
Square: 3/4"
Spindle Nose: Hardinge Tapered
Compound Rest Travel: 3"
Power Feed Range: 0.001" to 0.007" per minute
Size of Lathe Tool: 1/4" x 1/4"
Tailstock Spindle Diameter: 1 3/8"
Tailstock Spindle Travel: 3 1/4"
Tailstock Spindle Taper: No. 2 Morse
Steady Rest Opening: 3"
Lead Screw Diameter: 1" - 8 Thread
Range of Threads in Gear Box: 11 to 80 TPI
Number of Thread Changes in Gear Box: 27
Actual Threads Cut Through Gear Box:

NOTE: Standard threads in all standard English systems are included in the foregoing gear box selections. Additional pitches can be obtained by using extra gears.

Overall Length: 63"
Overall Width: 30"
Overall Height: 58"
Distance Spindle Center to Floor: 46"
Weight Complete Approximately: 1250 lbs.

5C HARDINGE PRECISION COLLETS

The HARDINGE Lathe takes the popular 5C HARDINGE Collet directly in the headstock spindle for maximum accuracy and rigidity of the work. Where short batches are prevalent, a lot of time can be saved by using the quick-acting lever-operated collet closer instead of the customary drawbar.

5C HARDINGE precision collets are manufactured to exact precision standards. Made of fine alloy steel, heat-treated with special equipment, hardened, and precision-ground to assure lasting accuracy and precision results.

The 5C HARDINGE Collets are carried in stock for immediate delivery, in all 64th, 32nd, and 16th sizes. Round sizes from 1/16" to 1 1/16", hexagon sizes from 1/8" to 7/8", and square from 3/16" to 3/4".

5C TAPER HOLE UNIVERSAL COLLET STOP

This stop will convert 5C HARDINGE collets into solid stop or spring ejector stop collets, without alteration of the standard collets. With the Universal Collet Stop, all collets obtained for this machine can be used in the regular manner, as solid stop collets or as spring ejector stop collets.

5C HARDINGE PLUG CHUCK

The 5C HARDINGE collet shank section is ground to size for direct application to the machine spindle. The nose section is used for holding taper shank tools in the headstock spindle. The nose section, 1 inch in diameter and 1 1/2 inches long, can be machined in place for the greatest degree of accuracy to suit your particular requirements for special arbors.