US 7,070,371 B2 · Chamfering air tool

Abstract

A chamfering air tool includes a driving shaft in a casing rotated by air pressure, a rotary shaft perpendicularly combined to the driving shaft for rotation, and a cutter fixed to the rotary shaft. Air holes are formed through the rotary shaft in a longitudinal direction. An air discharge groove is formed in the cutter, and a hole communicated with the air hole is formed in a fixing bolt head. An air path is formed in the fixing bolt head to keep a predetermined gap from the cutter. A guide ring having a diameter approximate to a lower end of the cutter is rotatably mounted to the fixing bolt head. Thus, air is blown to the air hole of the rotary shaft, the air hole formed in the fixing bolt head, the air path formed between the cutter and the guide ring, and the air discharge groove of the cutter, thereby eliminating cut chips and cooling the cutter.

Claims11

Dependent claims

A chamfering air tool comprising a casing, a driving shaft in the casing rotated by means of air pressure, a rotary shaft perpendicularly combined to the driving shaft so as to be rotated, and a cutter fixed to an end of the rotary shaft by means of a fixing bolt,

a bearing mounted to the casing from which the rotary shaft protrudes, an upper end of a cylindrical rotational cap mounted to an outer circumference of the bearing, and a guide flange is mounted to a lower end of the rotational cap so that the guide flange is rotatable by means of the bearing while in contact with a subject to be processed.

a plurality of air holes formed through the rotary shaft in a longitudinal direction of the rotary shaft, an air discharge groove formed in the cutter, an air hole formed in the head of the fixing bolt and communicated with the air holes of the rotary shaft to keep a predetermined gap from the cutter, and a guide ring having a diameter approximate to that of a lower end of the cutter rotatably mounted to the head of the fixing bolt by means of a bearing so that air is blown to the air holes of the rotary shaft, the air hole formed in the head of the fixing bolt, the air path formed between the cutter and the guide ring, and the air discharge groove of the cutter in order to eliminate cut chips and cool the cutter.

Dependencies are inferred from the claim text.

Chamfering air tool

Life of this patent

Chamfering air tool

Life of this patent

Abstract

Claims11