Hardinge HLV-H High Speed Tool Room Lathe Brochure (1968) PDF (EN)

Complete Range For Machining Parts Economically Close observation in your plant will reveal the use of machines entirely OUt of proportion to the work . It is not uncommon to see engine lathes weighing two to four thousand pounds slowly labouring away on work one inch in diameter or less. The Hardinge Model HLV-H lathe. presented In this bulletin. was primarily deSigned to fill a very old existent gap between the plain precision bench lathe and the heavy duty engine lathe. Extreme accuracy, high spindle speeds, and thread cutting ability are coupled with power and handiness for ease of operation to rapidly obtain desired results.

Plants have small and large work and, for economy and proper results. there must be such a distinction among the lathes used. When using a large engine lathe for collet work, you have a greater investment, loss of floor space, added power consumption, Improper speeds. The correct size of the Hardlnge HLV-H Lathe will become apparent when turning and threading, changing collets and jaw chucks, positioning the tallstock and when making use of the many speeds and feeds. poor results, and most important, the loss of valuable time. 3

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INFINITELY VARIABLE SPINDLE SPEEDS Your lathe operators will get full value for you when using the Hardlnge variOible spindle speed because it is easy to operate. This cannot be said for the ordinary lathe with complicated featu res which ope r ators refuse to use because of the effort required to operate such machines. With the Hardinge HLV-H lathe the spindle speed may be Increased or decreased at the touch of a control button. Selecting the exact speed required can be done while the tool is cutting. It is easy to vary the spindle speed to obtain desired rate of production and specified surface finish.

SLOW SPEED M ED IUM SPEE D HIGH SPEED COARSE FEED M ED IU M FEE D FINE FEE D INDEPENDENT ELECTRIC VARIABLE FEEDS to obtain the exact feed for efficient chip removal and best surface finish. Your operators will produce more work with less effort In less time and with more precision on the Har- dlnge HLV-H lathe. The independent variable electric feed for carriage and cross slide provide complete freedom of operation. You are not tied down to con- vendonal rates of feed in relation to spindle speed.

With the machine in operation you simply turn the control knob The rate offeed can be changed instantly at any time, even when the tool is cutting, without wasting valuable production time stopping the machine to shift gears as is the case with slow conventional lathes. The Hardinge variable spindle speed drive and the H ardinge inde- pendent electric feed were developed by Hardinge and come to you laboratory tested and customer shop use approved . Neither is compli- cated which means little or no maintenance. F or examp le. electronic tubes are not used in either unit. A ll designs are basic and unde r stood by regular shop peop le. 5

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HARDINGE SUPER-PRECISION SPINDLE The Hardinge super-precision pre loaded ball bearing spindle is mounted in the solid one-piece totally enclosed headstock housing for maximum rigidity and sustained accuracy. adaptors that introduce costly inaccuracies. The rigidity provided for sustained accuracy also prOVides the proper support for work when cutting with carbide tooling. Your operators will enjoy the carefree operation of the Hardinge preloaded ball bearing spindle. The bearings An excl usive feature of the Hardinge super-precision headstock is an electrically interlocked spindle lock pin.

The new type lock pin eliminates any chance of starting the main drive motor with the lock pin engaged. reqUire no adjustment and are permanently lubricated to operate continuously at all speeds without attention. Preloading eliminates all end play, radial play and assures the turning of true pieces. The headstock spindle drive belt can be changed with- out removing the spindle or disturbing the precision pre-loaded ball bearings. The collet seats directly In the hardened and precision ground spindle. thus eliminating troublesome sleeves and 6

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FAST LEVER COLLET CHUCKING Positive collet gripping is fast and easy with the lever operated collet closer which is additional equipment on this modern lathe. Collet tension is instantly adjustable throughout the full range from light to heavy holding power without the use o{tools. A single movement to the left closes the collet. A Single move- ment to the right opens the collet. HANDWHEEL FOR SPINDLE Your operators will appreCiate the standard built-in handwheel for the spindle. It provides a safe, convenient means for rotating the spindle by hand ... a must when indicating or inspecting precision work. This feature means In- creased production at lower cost. 7

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