CN202984827U

CN202984827U - Step chamfering tool

Info

Publication number: CN202984827U
Application number: CN 201220719663
Authority: CN
Inventors: 王毅
Original assignee: ACCESS PRECISION TOOLS (SUZHOU) Co Ltd
Current assignee: ACCESS PRECISION TOOLS (SUZHOU) Co Ltd
Priority date: 2012-12-24
Filing date: 2012-12-24
Publication date: 2013-06-12
Anticipated expiration: 2022-12-24

Abstract

The utility model relates to a step chamfering tool which comprises a tool holder and a chamfering tool bit connected to the head of the tool holder. The step chamfering tool is characterized in that the chamfering tool bit comprises a front-end reamer and at least one layer of chamfering cutting edge, the chamfering cutting edges are welded at the rear end of the reamer, each chamfering cutting edge comprises four blades, the four blades of each chamfering cutting edge are circumferentially distributed around the center line of the chamfering cutting edge and are divided into a first pair of blades and a second pair of blades about a diagonal line of the chamfering cutting edge, cutting faces of the first pairs of blades are inclined downwardly, and a 30-degree included angle is formed between each cutting face of each first pair of blades and the center line of the chamfering tool bit; and cutting faces of the second pairs of blades are inclined upwardly, and a 30-degree included angle is formed between each cutting face of each second pair of blades and the center line of the chamfering tool bit. The step chamfering tool has the advantages that the step chamfering tool is used for machining multilayer stepped holes, hole milling, multi-level stepped hole machining and step chamfering are completed at one step, an arc cannot be formed at a joint of each two corresponding stepped holes, and the step chamfering tool can be operated easily and conveniently and is high in work efficiency.

Description

The step rose reamer

Technical field:

The utility model belongs to the cutter field, relates in particular to a kind of step rose reamer for the disposable processing in multilayer steps hole.

Background technology:

Interior angle of spot hole in deep hole is being carried out chamfering and disposal molding adds man-hour, needing by machine tooling, this operating process is comparatively complicated, takies lathe, causes that efficient is low, expense is high, waste the problems such as large.

Therefore for above-mentioned deficiency, also develop the disposable processing in class multilayer steps hole on the existing market and complete the rose reamer of chamfered, as shown in Fig. 6 and 7, this rose reamer is comprised of handle of a knife and the multilayer chamfering cutter head that is welded on the handle of a knife head, and this chamfering cutter head is comprised of three blades along chamfering cutter head center line array distribution; In actual process,, can produce between adjacent two shoulder holes and interfere during greater than the chamfering of 0.25mm at working thickness, cause the interior step hole to produce circular arc, have limitation, do not reach client's crudy requirement.

Summary of the invention:

The technical problem that the utility model solves is to provide a kind of for the disposable processing of completing many stepped holes, and can guarantee that the stepped hole place can not produce circular arc, the step rose reamer of increasing work efficiency.

The technical scheme in the invention for solving the technical problem is: a kind of step rose reamer, the chamfering cutter head that comprises handle of a knife and be connected to the handle of a knife head, the chamfering cutting edge that described chamfering cutter head comprises the reamer of front end and is welded on one deck at least of reamer rear end, this chamfering cutting edge comprises four blades, described four blades are circle-shaped distribution along the center line of chamfering cutter head, described four blades are divided into centered by diagonal: first pair of blade and second pair of blade, the cutting face of first pair of blade is downward-sloping, is 30 ° of angles with the center line of chamfering cutter head; The cutting face of second pair of blade is inclined upwardly, and is 30 ° of angles with the center line of chamfering cutter head.

Further, in order to ensure the disposable processing of completing three rank chamfered bore, described chamfering cutting edge has three layers.

Further, interfere in order to ensure avoiding between adjacent two stepped holes in processing producing, offer circular arc at described handle of a knife and chamfering cutter head junction, the radius size of this circular arc is 0.02mm～0.05mm, offers the escape of 0.05mm at the front end of this circular arc.

The beneficial effect of this device: this device is used for the processing in multilayer steps hole, and the disposable processing of completing hole milling, multi-stage stairs hole and step place chamfering guarantees that two stepped hole joints can not produce circular arc, and is easy and simple to handle, high efficiency.

Description of drawings:

Below in conjunction with accompanying drawing, the utility model is further illustrated.

Fig. 1 is the front view of the utility model structure;

Fig. 2 is the left view of the utility model structure;

Fig. 3 is the blade schematic diagram of chamfering cutter head in the utility model;

Fig. 4 is the schematic diagram at A place in Fig. 2;

Fig. 5 is the partial schematic diagram of the utility model processing backward step endoporus;

Fig. 6 is the schematic diagram of existing step rose reamer;

Fig. 7 is the upward view of blade in Fig. 6.

In figure: 1, handle of a knife 2, chamfering cutter head 21, reamer 22, chamfering cutting edge 221, blade 222, the first pair of blade 223, the second pair of blade 3, escape.

The specific embodiment:

A kind of step rose reamer as shown in Fig. 1～3, the chamfering cutter head 2 that comprises handle of a knife 1 and be connected to handle of a knife 1 head, the chamfering cutting edge 22 that described chamfering cutter head 2 comprises the reamer 21 of front end and is welded on one deck at least of reamer rear end, this chamfering cutting edge 22 comprises four blades 221, described four blades 221 are circle-shaped distribution along the center line of chamfering cutter head, described four blades are divided into centered by diagonal: first pair of blade 222 and second pair of blade 223, the cutting face of first pair of blade 222 is downward-sloping, is 30 ° of angles with the center line of chamfering cutter head; The cutting face of second pair of blade 223 is inclined upwardly, and is 30 ° of angles with the center line of chamfering cutter head.

Further, in order to ensure the disposable processing of completing three rank chamfered bore, described chamfering cutting edge 22 has three layers.

Further, as shown in Figure 4, interfere in order to ensure avoiding between adjacent two stepped holes in processing producing, offer circular arc R in described handle of a knife 1 and chamfering cutter head 2 junctions, the radius size of this circular arc R is 0.02mm～0.05mm, offers the escape of 0.05mm at the front end of this circular arc R.

This device is used for the processing in multilayer steps hole, as shown in Figure 5, be the disposable partial schematic diagram of completing adjacent two stepped hole places after the processing of a plurality of stepped holes, the disposable processing of completing hole milling, multi-stage stairs hole and step place chamfering, guarantee that two stepped hole joints can not produce circular arc, easy and simple to handle, high efficiency.

It is emphasized that, it is more than better implementation column of the present utility model, be not that the utility model is done any type of restriction in appearance, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment does.

Claims

1. step rose reamer, the chamfering cutter head (2) that comprises handle of a knife (1) and be connected to handle of a knife (1) head, it is characterized in that: the chamfering cutting edge (22) that described chamfering cutter head (2) comprises the reamer (21) of front end and is welded on one deck at least of reamer rear end, this chamfering cutting edge (22) comprises four blades (221), described four blades (221) are circle-shaped distribution along the center line of chamfering cutter head, described four blades are divided into centered by diagonal: first pair of blade (222) and second pair of blade (223), the cutting face of first pair of blade (222) is downward-sloping, be 30 ° of angles with the center line of chamfering cutter head, the cutting face of second pair of blade (223) is inclined upwardly, and is 30 ° of angles with the center line of chamfering cutter head.

2. step rose reamer according to claim 1, it is characterized in that: described chamfering cutting edge (22) has three layers.

3. step rose reamer according to claim 1, it is characterized in that: offer circular arc (R) in described handle of a knife (1) and chamfering cutter head (2) junction, the radius size of this circular arc (R) is 0.02mm～0.05mm, offers the escape (3) of 0.05mm at the front end of this circular arc (R).