Boring bar

Details Boring bar Boring bar

1984-01-24

1987-05-19

Bilinsky, Z. R.

Cutting by use of rotating axially moving tool

With work-engaging structure other than tool or tool-support

Frictionally engaging sides of opening in work

408 83, 408708, B23B 4114

Patent

active

046663509

ABSTRACT:
An improved boring bar for machining bearings in an engine block or the like includes a plurality of circumferentially spaced wear pads which extend radially beyond the surface of the bar and form the sole points of support between the bar and the inner race of a bearing in which the bar is slideably received. Preferably, at least two of the wear pads are radially displaceable within slots on oposite circumferential sides of longitudinally aligned cutting tools which are secured to the bar. The pads are removably mounted in the slots within the bar by screws to allow rapid replacement of the pads due to wear. A thin layer of resilient material, such as neoprene rubber, is captured between the radially displaceable pads and the bottom of the slot, and urge the pads away from the bar, thereby biasing the bar in a direction away from the cutting tools and toward one side of the inner race of the bearing. The constant lateral biasing of the bar eliminates tool chatter and improves machining accuracy. Existing bars may be retrofitted with the wear pads. The bar may be made of soft steel so as to flex rather than break or crack when subjected to extraordinary bending forces.

REFERENCES:
patent: 2334795 (1943-11-01), Smith
patent: 2747948 (1956-05-01), Jergens
patent: 3348434 (1967-10-01), Plummer

Affiliated with

Also associated with

Rating

Boring bar does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Boring bar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Boring bar will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1561214