CN205057091U - Downthehole acute angle step finish boring boring cutter - Google Patents

Abstract

The utility model provides a downthehole acute angle step finish boring boring cutter, including handle of a knife (5) of seting up the knife rest groove, knife rest (3) in sword groove are seted up to the front end, install blade (1) on the knife rest, knife rest (3) are inserted to one side through the sword groove and are installed in the knife rest groove of handle of a knife (5) and be fixed through a set screw (4), can adjust knife rest (3) extension elongation through the cooperation in sword groove and knife rest groove, contained angle ( alpha ) between sword carrier shaft line and the handle of a knife feed orientation axis is lighter than 40, the contained angle ( beta ) that forms between the back knife face of blade and the rotation plane is less than 5, square chuck (1a) the axis of handle of a knife lower part and shank axis are not the eccentric settings at same axis, install at the sword inslot through the 2nd set screw (2) blade (1). The utility model discloses be suitable for various models lathe and boring machine, can realize downthehole acute angle step finish boring.

Description

Acute angle step right boring boring cutter in a kind of hole

Technical field

Basis is novel belongs to boring cutter technical field of structures.

Background technology

In hole, step parts fine finishining generally adopts boring to process.Usual journey right-angle structure between the knife rest of tradition boring cutter and handle of a knife, this structure can be subject to knife bar position influence during step in boring one some holes, is difficult to bore fine angle, and especially when the step of some acute angles of boring, impact is larger.

Summary of the invention

The purpose of this utility model solves the deficiencies in the prior art, provide a kind of be suitable for various model lathe and boring machine, the boring cutter of acute angle step right boring in hole can be realized.

The purpose of this utility model is achieved through the following technical solutions:

Acute angle step right boring boring cutter in a kind of hole, comprise the handle of a knife, the front end that offer cutter saddle trough and offer the knife rest of cutter groove, the blade be installed on knife rest, knife rest to be arranged in the cutter saddle trough of handle of a knife by cutter groove oblique cutting and to be fixed by the first hold-down screw, the extension elongation of knife rest can be regulated by the cooperation of cutter groove and cutter saddle trough, angle between knife rest axis and handle of a knife direction of feed axis is less than 40 °, and the angle formed between the rear knife face of blade and Plane of rotation is less than 5 °; The square clamp axis of handle of a knife bottom and handle of a knife axis are not at the eccentric setting of same axis; Blade is arranged in cutter groove by the second hold-down screw.

Knife rest of the present utility model and handle of a knife angle are less than 40 °, can ensure to form the angle that is less than 5 ° between the rear knife face of blade and Plane of rotation, and during to guarantee to process acute angle step, cutter can not interfere with workpiece, guarantees the accurate processing of step angle.The extension elongation of knife rest can be regulated by the slip of cutter groove at cutter saddle trough, adapts to process requirements.The square clamp axis of handle of a knife and handle of a knife axis can have certain bias, the unbalanced factor that during for balancing cutter work, knife rest produces, improves the dynamic balance performance of cutter, guarantees machining accuracy.The utility model is suitable for lathe and the boring machine of various model, can realize the right boring of acute angle step in hole.

Accompanying drawing explanation

Fig. 1 is the utility model boring cutter perspective view;

Fig. 2 is the schematic front view of the utility model boring cutter.

Detailed description of the invention

As Fig. 1, shown in Fig. 2, the utility model comprises the handle of a knife 5 offering cutter saddle trough, front end offers the knife rest 3 of cutter groove, be installed on the blade 1 on knife rest, knife rest 3 to be arranged in the cutter saddle trough of handle of a knife 5 by cutter groove oblique cutting and to be fixed by the first hold-down screw 4, the extension elongation of knife rest 3 can be regulated by the cooperation of cutter groove and cutter saddle trough, angle α between knife rest axis and handle of a knife direction of feed axis is less than 40 °, to ensure to form the angle β that is less than 5 ° between the rear knife face of blade and Plane of rotation, when guaranteeing to process acute angle step, cutter can not interfere with workpiece, guarantee the accurate processing of step angle.The square clamp 1a axis of handle of a knife bottom and handle of a knife axis are not at the eccentric setting of same axis; Blade 1 is arranged in cutter groove by the second hold-down screw 2.

Claims (1)

1. acute angle step right boring boring cutter in a hole, it is characterized in that, comprise the handle of a knife (5) offering cutter saddle trough, front end offers the knife rest (3) of cutter groove, be installed on the blade (1) on knife rest, knife rest (3) is arranged in the cutter saddle trough of handle of a knife (5) by cutter groove oblique cutting and is also fixed by the first hold-down screw (4), knife rest (3) extension elongation can be regulated by the cooperation of cutter groove and cutter saddle trough, angle (α) between knife rest axis and handle of a knife direction of feed axis is less than 40 °, the angle (β) formed between the rear knife face of blade and Plane of rotation is less than 5 °, square clamp (1a) axis of handle of a knife bottom and handle of a knife axis are not at the eccentric setting of same axis, blade (1) is arranged in cutter groove by the second hold-down screw (2).