Method of forming toothed wheels and product formed thereby

B - Operations – Transporting – 23 – P

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

B23P 15/14 (2006.01) B21D 53/28 (2006.01) B21H 1/04 (2006.01) B21K 1/30 (2006.01) B21H 5/02 (2006.01)

Patent

CA 2263677

A method for forming a toothed wheel which comprises the steps of providing a circular sheet metal blank of uniform thickness, cold forming an outer peripheral portion thereof into a thickened rim of uniform generally rectangular cross-sectioned configuration having (1) an outer periphery which does not exceed the outer periphery of the toothed wheel to be formed by approximately two percent, (2) a radial dimension at least 2.0 mm greater than the tooth height of the toothed wheel to be formed, and (3) an axial dimension at least twice the uniform thickness of said blank, the cold forming comprising progressively moving a predetermined marginal peripheral portion of the metal blank having a cross-sectional outline radially inwardly and axially outwardly while the integral integrity of the metal within the cross-sectional outline is maintained without merging portions of the cross-sectional outline together, and cutting a series of teeth in the periphery of the thickened rim by a hobbing operation.

Un procédé de formage d'une roue dentée consiste à partir d'une ébauche de tôle circulaire d'épaisseur uniforme, à former à froid une partie périphérique externe de ladite ébauche pour obtenir un bord épaissi de configuration de section uniforme, généralement rectangulaire, ayant 1) une périphérie externe qui ne peut excéder de deux pour-cent approximativement la périphérie externe de la route dentée à former; 2) une dimension radiale dépassant d'au moins 2,0 mm la hauteur des dents de la route dentée à former; et 3) une dimension axiale au moins deux fois égale à l'épaisseur uniforme de ladite ébauche. Ledit formage à froid consiste à déplacer progressivement, vers l'intérieur dans le sens radial et vers l'extérieur dans le sens axial, une partie périphérique marginale prédéterminée de l'ébauche métallique ayant un contour en section transversale, tout en préservant intégralement l'intégrité du métal à l'intérieur du contour en section transversale, sans fusionner ensemble des parties dudit contour en section transversale. On découpe ensuite, par forçage, une série de dents dans la périphérie du bord épaissi.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method of forming toothed wheels and product formed thereby does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of forming toothed wheels and product formed thereby, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of forming toothed wheels and product formed thereby will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1504193

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.