Gear Tech Tips

Once the usable length (UL) of the hob is known (discussed in Part 1 of 2), the number of usable teeth (UT) can be calculated.

The number of usable hob teeth is used to estimate the parts that can be hobbed per sharpening. This is calculated by using general tool life factors (LF) which are as follows:

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.

More information on the WGT1000 and the other new Wenzel large inspection machines such as the LH 2015 Gear and LHF 3020 Gear is available at www.koepferamerica.com/inspection.html

Koepfer America is the North American representative for ims.koepfer. cutting tools gmbh - Your source for Carbide and High Speed Steel cutting tools, like:

For more details or to request a quote, please contact us at (847) 931-4121 or hobs@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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	Gear Tech Tips Technical Information For The Gear Industry	by AMERICA
	This Edition is Sponsored by: Wenzel GearTec	Tech Tips Edition #2
"Add A Friend" To Receive This Newsletter Hob Life and Shifting Strategy (Part 2 of 2) *"Calculation of Shift Amount"* Once the usable length (UL) of the hob is known (discussed in Part 1 of 2), the number of usable teeth (UT) can be calculated. *UT = (UL / p_x) Gashes in the hob (p_x is Axial Pitch) The number of usable hob teeth is used to estimate the parts that can be hobbed per sharpening. This is calculated by using general tool life factors (LF) which are as follows: - Uncoated High-Speed Steel (HSS) tool = 80 lineal inches of part per hob tooth - Coated HSS tool = 125 lineal inches of part per hob tooth (assumes re-sharpened and not recoated) - Multi-Gash (>15 gashes) tool = 200 lineal inches of part per hob tooth - always coated - Coated Carbide tool = 350 lineal inches Using the above life factors, the parts per sharpening is calculated by: Life / sharpening of hob (in inches) = UT * LF -or- Parts / sharpening = (UT * LF) / (N * Face width of part), where N = number of teeth in part Once the number of parts per hob is established, the shift amount per piece can be calculated. Shift / part = UL / parts per sharpening Other useful formulas: Axial Pitch (p_x) = p / P_nd Koepfer 2007 Gear School Registration now available online at www.koepferamerica.com/education.html 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 start planning now. The Koepfer America, LLC gear seminar, "Fundamentals of Parallel Axis Gear Manufacturing", is designed for entry-level gear manufacturing personnel. Attendees include manufacturing management & 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** Wenzel GearTec introduces the WGT1000 - the largest CNC gear inspection machine in its WGT Series Wenzel GearTec is a division of Wenzel Precision GmbH of Wiesthal, Germany, a second generation family-based CMM machine builder. Wenzel GearTec specializes in CNC inspection machines for gears, splines, and other special forms. The Wenzel WGT Series are dedicated gear inspection machines designed to provide a fully automatic measuring process with the highest accuracy. Using the new WGT1000, spur and helical gears up to 1,000 mm in diameter can be measured for profile and lead deviations and pitch and run-out deviations. The vertical range of measurement is 1,000 mm. Bevel gears, worms, worm gears, cylindrical shafts and more can also be checked with optional software modules. The maximum table load is 3,000 kg. The WGT1000 also offers four (4) axes of CNC control with air bearing technology on all linear axes, high-precision hydro-static rotary table, granite construction throughout, Renishaw 3-D scanning probes, and optional CMM capability. The CNC control unit uses a standard industrial PC and non-proprietary electronic components. The programming and software is based on the Windows® operating system. The base plate, X-, Y- and Z-axis are made from dark granite in order to achieve the same thermal and dynamic behavior in all axes. More information on the WGT1000 and the other new Wenzel large inspection machines such as the LH 2015 Gear and LHF 3020 Gear is available at www.koepferamerica.com/inspection.html *Large inventory of cutting tools* IN STOCK for immediate delivery. Click Here for a list of stocked tools. Koepfer America is the North American representative for ims.koepfer. cutting tools gmbh - Your source for Carbide and High Speed Steel cutting tools, like: Gear Hobs - Bore and shank type Spline & serration hobs Sprockets and other special generated profiles Worm and worm gear hobs Worm and gear milling cutters For more details or to request a quote, please contact us at (847) 931-4121 or hobs@koepferamerica.com. OO CURRENT PROMOTIONS OO - Six hobs re-sharpened for the price of five! Send in five hobs to be re-sharpened at normal costs and receive a FREE re-sharpening on your sixth hob. Coating costs separate. For more details, please contact us at (847) 931-4121 or hobs@koepferamerica.com. In The News... See how Koepfer helped increase Haas Automation's production efficiencies. (Featured in March 2007 "Modern Machine Shop") To learn more about Koepfer America, LLC and the products we offer, please visit our web site at www.koepferamerica.com Add E-mail Addresses: Want to make sure that someone else you know is receiving "Gear Tech Tips"? Please click here to add additional e-mail addresses. Opt-Out Option: If you would not like to receive future editions of "Gear Tech Tips", please click here or just "Reply" back to this e-mail and ask to be taken off the e-mailing.

Wenzel GearTec introduces the WGT1000 - the largest CNC gear inspection machine in its WGT Series