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Gear Tech Tips Technical Information For The Gear Industry |
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AMERICA |
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This Edition is Sponsored by: ims.koepfer cutting tools gmbh |
Tech Tip Edition #1 |
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Hob
Life and Shifting Strategy
(Part 1 of 2)
With the emphasis on longer hobs today, shifting strategies have become
an important part of the hobbing process. Each hobbing application has
a different strategy that will produce the best tool life. One of the
first items needed to achieve optimum tool life is to calculate the usable
shifting length of the hob for the particular part being hobbed. To do this, the following information is required: Step 1) Calculate the Axial
Pitch (p Step 2) Estimate the
non-usable axial pitch factors (X & Y) on each side of the hob. These
values are interpolated from the chart. (See Diagram #2) Step 3) Calculate the
non-usable axial pitches (X & Y) on each side of the hob.
X = x * p Y = y * px Step 4) Calculate the usable cutting face length (UL) of the hob. UL = L - (X + Y) (In the next edition of Gear Tech Tips, we will discuss Part 2 - "Calculation of Shift Amount".) Diagram #1 - Usable shifting length of hob
Diagram #2 - Non-usable pitch chart
Koepfer 2007 Gear School The Koepfer 2007 Gear School will be held May 22 – 24, 2007 at the Pheasant Run Resort in St. Charles, Illinois. For additional information click here or call us at (847) 931-4121.Space is limited so you may want to start planning soon. The Koepfer America, LLC gear seminar, Fundamentals of Parallel Axis Gear Manufacturing, is designed for entry-level gear manufacturing personnel. Attendees include manufacturing management, industrial engineers, supervisors, set-up personnel, operators and quality control. Seminar topics include: Gear Nomenclature, Basic Gear Mathematics, The Hobbing Process, Fixturing and Blanks, Skiving, Gear Inspection, and more. There will also be plant tours and equipment demonstrations. And remember…knowledge keeps the gears turning.
NEW PRODUCT ANNOUNCEMENT
Newest CNC Machine Provides Both Gear Hobbing and Worm Milling The Koepfer Model MZ130 is a seven-axis CNC gear hobbing and worm milling machine for spur gears, helical gears, worm gears, worms, face gears, and straight bevel gears. The machine is rated at 1.25mm for parts up to 85mm diameter and is ideal for large and small batches. An excellent feature is the easy change over from gear hobbing to worm milling through the CNC control. The Koepfer Model MZ130 also has automatic gear tooth deburring using two hobs. Some optional features include an eighth-axis CNC synchronized tailstock, a flexible automation system, and automatic skiving. More information on the Model MZ130 is available at www.koepferamerica.com/modelMZ130.html
Hob Sharpening Service from Koepfer America Why not try Koepfer America hob sharpening service and Receive a Savings of 50% OFF* your first order. * 50% discount is on hob sharpening service only - stripping & recoating are separate charges. For more details or to receive a quote, please contact us at (847) 931-4121 or dharroun@koepferamerica.com.
To learn more about Koepfer America, LLC and the products we offer, please visit our web site at www.koepferamerica.com
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