Browse Prior Art Database

DEBURRING ALUMINUM AUTOMOTIVE WHEELS

IP.com Disclosure Number: IPCOM000019588D
Publication Date: 2003-Sep-22
Document File: 3 page(s) / 540K

Publishing Venue

The IP.com Prior Art Database

Abstract

Cast aluminium rim wheels are turned, deburred, and eventually sand blasted and painted. Deburring is usually done by hand with files, scrapers, milling tools or by automatic machines running conventional brushing tools. All the wheel clearances, the valve hole and sometime the outside diameter are deburred. Because of their limited access, small and narrow holes are very difficult to efficiently deburr. Brushing machines are not 100 % efficient as the brushes must be profiled to each wheel shape and they loose their profile as they wear down. In addition, brushes are inefficient in deburring hole edges that are parallel to the wheel diameter, as the brush fibres cannot effectively contact the edge. As a consequence, corrosion occurs after a period of time. Car manufacturers are very strict on corrosion resistance and the rim wheels must pass a salt spray test to be approved for use. Additional surface conditioning steps are usually required to prepare the wheel faces before painting. An improved method to deburr rim wheels is by using flexible resin moulded discs with a high content of minerals of various grits.

This text was extracted from a Microsoft Word document.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 71% of the total text.

Deburring Automotive Aluminium Rim Wheels

Cast aluminium rim wheels are turned, deburred, and eventually sand blasted and painted. Deburring is usually done by hand with files, scrapers, milling tools or by automatic machines running conventional brushing tools.

All the wheel clearances, the valve hole and sometime the outside diameter are deburred. Because of their limited access, small and narrow holes are very difficult to efficiently deburr. Brushing machines are not 100 % efficient as the brushes must be profiled to each wheel shape and they loose their profile as they wear down. In addition, brushes are inefficient in deburring hole edges that are parallel to the wheel diameter, as the brush fibres cannot effectively contact the edge.

As a consequence, corrosion occurs after a period of time. Car manufacturers are very strict on corrosion resistance and the rim wheels must pass a salt spray test to be approved for use. Additional surface conditioning steps are usually required to prepare the wheel faces before painting.

An improved method to deburr rim wheels is by using flexible resin moulded discs with a high content of minerals of various grits.

These products can be used either by hand, with portable tools or with semi-automatic or automatic machines. Their flexibility allows them to conform to different wheel shapes without the discs being profiled and their cutting efficiency guaranties a high quality deburring action in less than a minute per wheel. The disc wid...