Multi-edged machining tool for post-machining of bores

B - Operations – Transporting – 23 – D

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

B23D 77/00 (2006.01)

Patent

CA 2743909

The invention relates to a multi-edged machining tool for the post-machining or precision machining of bores, in particular to a reamer for machining deep bores or several axially interspaced bores of the same dimensions and quality, such as bores for receiving bearing bushes for a camshaft. The tool has at least one cutting insert (32) with a pre-determined nominal diameter measurement and with cutting edges that are distributed substantially uniformly around the periphery, in addition to a guide body assembly that is axially offset in relation to said edges. The aim of the invention is to improve the guide accuracy whilst providing greater flexibility during the adaptation of the tool to the machining problem at hand. To achieve this, the guide body assembly is an integral component of a substantially cylindrical guide body (36) that consists of a solid carbide Said guide body forms at least n helical guide ribs (38) which are equidistant around the periphery and which have a nominal diameter measurement (D38) that is substantially smaller than the nominal diameter measurement (D32) of the cutting insert (32) by a value equating to double the dimension of the lubricant gap that is formed during the operation of the tool. Each guide rib (38) extends over an angle of contact or a central angle that is greater than 360°/n, where n >= 2.

<span lang=FR style='font-family:"Courier New"'>L'invention concerne un outil de reprise ou de finition d'alésages à plusieurs arêtes de coupe et à enlèvement de matière, en particulier un alésoir, destiné à l'usinage d'alésages profonds ou multiples écartés axialement, de même dimension et de même qualité, par exemple des alésages pour le montage de paliers lisses pour un arbre à cames. L'outil possède au moins un insert de coupe (32) d'un diamètre nominal prédéterminé possédant des arêtes de coupe réparties sensiblement régulièrement sur la circonférence, ainsi qu'un agencement de corps de guidage décalé axialement. Afin d'améliorer la précision du guidage tout en assurant une grande souplesse dans l'adaptation de l'outil au problème d'usinage considéré, l'agencement de corps de guidage est une partie intégrante d'un corps de guidage (36) substantiellement cylindrique fait intégralement en métal dur. Ce corps de guidage forme au moins n nervures de guidage (38) en forme d'hélice qui sont écartées d'une même distance les unes des autres. La cote de diamètre nominal (D38) est réduite, par rapport à la cote de diamètre nominal (D32) de l'insert de coupe (32), d'une valeur égale au double de la fente de lubrification se formant dans l'utilisation de l'outil. Chacune des nervures de guidage (38) s'étend sur un angle d'enroulement ou angle au centre qui est supérieur à 360 °/n, où n </span>= 2.

LandOfFree

Say what you really think

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

Rating

Multi-edged machining tool for post-machining of bores does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-edged machining tool for post-machining of bores, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-edged machining tool for post-machining of bores will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-2069051

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