CN202726131U

CN202726131U - Combined type cutter bar

Info

Publication number: CN202726131U
Application number: CN 201220400281
Authority: CN
Inventors: 林柄达
Original assignee: TOPGREEN TECHNOLOGY Co Ltd
Current assignee: TOPGREEN TECHNOLOGY Co Ltd
Priority date: 2012-08-13
Filing date: 2012-08-13
Publication date: 2013-02-13
Anticipated expiration: 2022-08-13

Abstract

The utility model relates to a combined type cutter bar. The combined type cutter bar comprises a handle, a solder and a cutter bit. One end face of the handle concaves inwards along the axial direction to form a circular conical surface and a vertex. Therefore, a conical groove body is formed. The solder is attached to the circular conical surface and the vertex. The cutter bit is connected with the handle through the solder. The cutter bit comprises a connecting end and a cutting end. The connecting end protrudes along the axial direction to form a cone. The cone is located in the conical groove and connected with the handle through the solder. The conical groove and the cone are adopted to enlarge the contact surface between the cutter bit and the handle through the solder. The detachment probability between the cutter bit and the handle is further reduced.

Description

Combined type cutting tool bar

Technical field

The utility model relates to a kind of combined type cutting tool bar, particularly a kind of combined type cutting tool bar that can reduce the fracture probability when High Rotation Speed.

Background technology

Drill bit, milling cutter, the cutting tools such as screw tap are the instruments that is usually used in machining in the machine-building, cutting tool commonly used is formed through machining by a bar, this bar includes a shank and a head, one end of this shank and the welding of an end of this head, because being this end of plane and this head, this end of this shank also is the plane, both contacts area are large not, when cutting tool commonly used during at groove of one side cutting or hole, because its High Rotation Speed, and when working as the torsion that produces greater than the stress of the solder side of shank and head, shank just separates with head, and then causes cutting tool to produce the problem of fracture, is a large shortcoming really.

The utility model content

In order to solve the too small problem that causes cutting tool to produce fracture of above-mentioned contact area owing to cutting tool head and shank, the utility model provides a kind of combined type cutting tool bar, and it includes:

One handle of a knife, it is cylindric, and an end face of this handle of a knife vertically indent be formed with a taper seat and a summit, this summit be positioned at this taper seat the centre and with this end face of this handle of a knife at a distance of farthest, form a circular cone cell body with this;

One scolder, itself and this taper seat and this summit fit and are positioned at this circular cone cell body; And

One cutter head, it is cylindric, it is connected with this handle of a knife by this scolder, and the section radius of this cutter head is less than the section radius of this handle of a knife, this cutter head have a link and one with this link away from the cutting end, this link protrudes vertically and is formed with a cone, and this cone is to should the conical grooves body and be positioned at this circular cone cell body, and this cone is connected with this handle of a knife by this scolder.

According to the utility model, " combined type " described in the utility model refers to that the material of this handle of a knife is different from the material of this cutter head.

According to the utility model, the section radius of cutter head described in the utility model refers to the axial cross section radius perpendicular to this cutter head.

According to the utility model, the section radius of handle of a knife described in the utility model refers to the axial cross section radius perpendicular to this handle of a knife.

According to the utility model, " correspondence " described in the utility model finger-type shape coincide.

Preferably, wherein the drift angle of the shaft section of this circular cone cell body is 90 degree.

Preferably, wherein the drift angle of the shaft section of this cone is 90 degree.

According to the utility model, shaft section described in the utility model refers to the cross section on the bottom surface of a vertical circular cone and the summit by this circular cone, and it is triangular in shape.

According to according to the utility model, drift angle described in the utility model refers to described angle for the dual-side on the summit by this circular cone in the leg-of-mutton shaft section.

Preferably, wherein the volume of this cone is slightly less than the volume of this circular cone cell body.

Preferably, wherein the hardness of the material of this handle of a knife less than the hardness of the material of this cutter head.

Preferably, wherein the material of this handle of a knife is stainless steel, and wherein the material of this cutter head is wolfram steel.

Preferably, wherein the axial length of this cutter head less than the axial length of this handle of a knife.

The utility model has the advantage of, the end that one end of the handle of a knife by combined type cutting tool bar is formed with a circular cone cell body and cutter head is formed with a cone, both during by this solder bonds contact area increase, make this combined type cutting tool bar after forming a combined type cutting tool after the processing, when High Rotation Speed, can reduce the probability that this handle of a knife and this cutter head separate, increase the life-span of this combined type cutting tool and increase its industry applications with this.

In addition, it is the designs of 90 degree that the utility model utilizes the drift angle of the shaft section of the drift angle of shaft section of this circular cone cell body and this cone, makes handle of a knife of the present utility model and cutter head have more stable applying effect.

In addition, because the hardness of the material of this handle of a knife is less than the hardness of the material of this cutter head, therefore cut when being processed to form cone in an end-grain cutting of this cutter head, processing procedure is simpler and easy, therefore can improve its industry applications.

Further, because this cutter head is main operation element, therefore the material that the utility model utilizes this cutter head is more cheap stainless steel for the material of expensive this handle of a knife of wolfram steel, and then reduce the manufacturing cost of combined type cutting tool bar of the present utility model and cutting tool thereof, render a service to keep its cutting but still make this cutter head have certain hardness, therefore have good economic benefit.

Description of drawings

Fig. 1 is the perspective view of the preferred embodiment of combined type cutting tool bar of the present utility model.

Fig. 2 is the three-dimensional exploded view of combined type cutting tool bar of the present utility model.

Fig. 3 is the side cutaway view of the preferred embodiment of combined type cutting tool bar of the present utility model.

The drawing reference numeral explanation:

1 combined type cutting tool bar, 10 handle of a knifes

20 scolders, 30 cutter heads

11 taper seats, 12 summits

13 circular cone cell bodies, 31 links

32 cutting ends, 311 cones

The specific embodiment

Below cooperate accompanying drawing and preferred embodiment of the present utility model, further setting forth the utility model is to reach the technological means that predetermined utility model purpose is taked.

See also shown in Fig. 1 to 3, combined type cutting tool bar 1 of the present utility model includes a handle of a knife 10, a scolder 20 and a cutter head 30.

Described handle of a knife 10, it is cylindric, and an end face of this handle of a knife 10 vertically indent is formed with a taper seat 11 and a summit 12, this summit 12 be positioned at this taper seat 11 the centre and with this end face of this handle of a knife 10 at a distance of farthest, be formed with a circular cone cell body 13 with this, the drift angle of the shaft section of this circular cone cell body 13 is 90 degree, and the material of this handle of a knife 10 is stainless steel.Described scolder 20, itself and this taper seat 11 and this summit 12 fit and are positioned at this circular cone cell body 13.Described cutter head 30, it is cylindric, it is connected with this handle of a knife 10, and the section radius of this cutter head 30 is less than the section radius of this handle of a knife 10, the length of this cutter head 30 is less than the length of this handle of a knife 10, this cutter head 30 have a link 31 and one with this link 31 away from cutting end 32, this link 31 is formed with a cone 311 along the axial protrusion of this cutter head 30,311 pairs of this cones should conical grooves body 13 and the volume of this cone 311 be slightly less than the volume of this circular cone cell body 13, the drift angle of the shaft section of this cone 311 is 90 degree, and this cone 311 is positioned at this circular cone cell body 13 and is connected with this handle of a knife 10 by this scolder 20.

The above only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet be not to limit the utility model, any those skilled in the art, in the scope that does not break away from technical solutions of the utility model, should utilize the technology contents of above-mentioned announcement to make a little change or be modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, any simple modification that foundation technical spirit of the present utility model is done above embodiment, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.

Claims

1. a combined type cutting tool bar is characterized in that, includes:

2. combined type cutting tool bar according to claim 1 is characterized in that, the drift angle of the shaft section of this circular cone cell body is 90 degree.

3. combined type cutting tool bar according to claim 1 and 2 is characterized in that, the drift angle of the shaft section of this cone is 90 degree.

4. combined type cutting tool bar according to claim 3 is characterized in that, the volume of this cone is slightly less than the volume of this circular cone cell body.

5. combined type cutting tool bar according to claim 4 is characterized in that, the hardness of the material of this handle of a knife is less than the hardness of the material of this cutter head.

6. combined type cutting tool bar according to claim 5 is characterized in that, the material of this handle of a knife is stainless steel, and wherein the material of this cutter head is wolfram steel.

7. combined type cutting tool bar according to claim 6 is characterized in that, the axial length of this cutter head is less than the axial length of this handle of a knife.