Automatic boring tool
First Claim
1. In a boring machine having computer numerical control and of the class having a spindle for receiving a tool to form a bored hole and a servo-driven actuating unit to control the diameter of said bored hole comprising a tapered shank adapted to be received in said spindle, a pre-loaded adjustable boring bar with a cam slot pivotally secured to said tapered shank, a non-rotating torque arm on said tapered shank, a sliding sleeve carried by said torque arm, said torque arm being controlled in its linear position relative to the tapered shank by the servo-driven actuating unit, a cam bar mounted in said sliding sleeve to be received in the cam slot in said boring bar, whereby axial movement of said cam bar in response to a setting of the serv-driven actuating unit pivots the boring bar to a preselected position to bore a hole by the boring bar.
3 Assignments
0 Petitions
Accused Products
Abstract
A boring machine having a tapered shank received in a spindle with a pre-loaded adjustable boring bar carrying said tapered shank and a non-rotating torque arm for controlling a pre-loaded adjustable boring bar pivotally secured to a tapered shank to pivot the boring bar.
24 Citations
5 Claims
- 1. In a boring machine having computer numerical control and of the class having a spindle for receiving a tool to form a bored hole and a servo-driven actuating unit to control the diameter of said bored hole comprising a tapered shank adapted to be received in said spindle, a pre-loaded adjustable boring bar with a cam slot pivotally secured to said tapered shank, a non-rotating torque arm on said tapered shank, a sliding sleeve carried by said torque arm, said torque arm being controlled in its linear position relative to the tapered shank by the servo-driven actuating unit, a cam bar mounted in said sliding sleeve to be received in the cam slot in said boring bar, whereby axial movement of said cam bar in response to a setting of the serv-driven actuating unit pivots the boring bar to a preselected position to bore a hole by the boring bar.
Specification