CN205324818U

CN205324818U - Be used for thin wall shoulder hole chamfer umbrella tooth T type milling cutter

Info

Publication number: CN205324818U
Application number: CN201620132375.8U
Authority: CN
Inventors: 代中华; 胡其林; 胡静
Original assignee: Chengdu Youtuo Youlian Technology Co Ltd
Current assignee: Chengdu Youtuo Youlian Technology Co Ltd
Priority date: 2016-02-22
Filing date: 2016-02-22
Publication date: 2016-06-22
Anticipated expiration: 2026-02-22

Abstract

The utility model discloses a be used for thin wall shoulder hole chamfer umbrella tooth T type milling cutter, it includes cutter arbor (1) and tool bit (2), tool bit (2) integrated into one piece in the one end of cutter arbor (1), tool bit (2) on be provided with a plurality of mill sword (3), mill that sword (3) go up to be close to cutter arbor (1) one serve the face of milling (4) of having offered, the contained angle of the face that mills (4) and cutter arbor (1) axial lead be 42~48, mill adjacent two and be provided with chip groove (5) between sword (3), the both sides wall of chip groove (5) between have a contained angle a. The beneficial effects of the utility model are that: it has simple structure, processing is convenient and the high advantage of processingquality.

Description

A kind of for the thin-walled shoulder hole chamfering T-shaped milling cutter of umbrella tooth

Technical field

This utility model relates to the T-shaped milling cutter of umbrella tooth, particularly a kind of for the thin-walled shoulder hole chamfering T-shaped milling cutter of umbrella tooth。

Background technology

In Process of Oil Well Drilling, because geology is complex, the structure of the workpiece of the instrument therefore used is complex, and its required precision is higher, the particularly inner core of a kind of oil drilling, there are in this inner core three thin cylinders, and the axiality of these three thin cylinder is required very high, and in thin cylinder, also to offer shoulder hole, chamfering is also needed in the bottom of shoulder hole, thus the parts in thin cylinder and thin cylinder perfect cooperation just can be made, as shown in Figure 1, the nominal diameter of ladder macropore 6 is 32mm, the nominal diameter of ladder aperture 7 is 26mm, and the tube wall of ladder macropore is very thin, traditional processing mode is then adopt milling cutter directly ladder position to be carried out chamfering, but owing to the length of ladder macropore is longer, it is thus desirable to very long knife bar could be processed, but after knife bar length, the cutting end of cutter is susceptible to beat, thus causing that chamfering precision is inadequate, serious will destroy shoulder hole inwall, cause that workpiece is scrapped, cause immeasurable loss。

Utility model content

The purpose of this utility model is in that to overcome the shortcoming of prior art, it is provided that a kind of simple in construction, easy to process and crudy high for the thin-walled shoulder hole chamfering T-shaped milling cutter of umbrella tooth。

The purpose of this utility model is achieved through the following technical solutions: a kind of for the thin-walled shoulder hole chamfering T-shaped milling cutter of umbrella tooth, it includes knife bar and cutter head, described cutter head is shaped in one end of knife bar, described cutter head is provided with multiple milling edge, described milling edge offers milling face on one end of knife bar, the angle of described milling face and knife bar axial line is 42 ° ~ 48 °, between adjacent two milling edges, it is provided with chip area, there is between the two side of described chip area angle a。

Described milling edge is eight, and is evenly distributed on same circumference。

The radial end face of described milling edge is arc surface, and eight arc surfaces are positioned on same circumference。

Described angle a is 73 ° ~ 75 °。

The angle of described milling face and knife bar axial line is 45 °。

This utility model has the advantage that the T-shaped milling cutter of umbrella tooth of the present utility model, is provided with multiple milling edge, so that the load reduction of each milling edge, thus milling cutter beating in the course of processing can be reduced, thus ensure that crudy；Between adjacent two milling edges, angled chip area is set, adds solid capacity, also improve the discharge efficiency of chip simultaneously, thus further improve crudy。

Accompanying drawing explanation

Fig. 1 is the schematic diagram of this utility model cutter workpiece to be processed；

Fig. 2 is schematic front view of the present utility model；

Fig. 3 is left view schematic diagram of the present utility model；

In figure, 1-knife bar, 2-cutter head, 3-milling edge, 4-milling face, 5-chip area, 6-ladder macropore, 7-ladder aperture。

Detailed description of the invention

Below in conjunction with accompanying drawing, this utility model being further described, protection domain of the present utility model is not limited to the following stated:

As shown in Figures 2 and 3, a kind of for the thin-walled shoulder hole chamfering T-shaped milling cutter of umbrella tooth, it includes knife bar 1 and cutter head 2, described cutter head 2 is shaped in one end of knife bar 1, described cutter head 2 is provided with multiple milling edge 3, described milling edge 3 offers milling face 4 on one end of knife bar 1, the angle of described milling face 4 and knife bar 1 axial line is 42 ° ~ 48 °, preferably, the angle of described milling face 4 and knife bar 1 axial line is 45 °, it is provided with chip area 5 between adjacent two milling edges 3, between the two side of described chip area 5, there is angle a, in the present embodiment, described angle a is 73 ° ~ 75 °, preferably, described angle a is 74 °, the angle a of 74 °, ensure that the intensity of cutter head, quickly iron filings can also be discharged simultaneously, thus improving the milling quality of milling cutter。

In the present embodiment, described milling edge 3 is eight, and is evenly distributed on same circumference, and further, the radial end face of described milling edge 3 is arc surface, and eight arc surfaces are positioned on same circumference。

Work process of the present utility model is as follows: penetrate in shoulder hole by the knife bar of T-shaped for umbrella tooth milling cutter, and knife bar traverse ladder aperture, then knife bar is arranged on handle of a knife, then starting device, the T-shaped milling cutter of umbrella tooth does circular motion, thereby through cutting face 4 by chamfering milling machine, produced chip is then drained in ladder macropore by chip area, workpiece is taken out, vertically place, chip can be discharged, in the whole course of processing, there is no the interference of chip, and the center of circle of circular arc that milling cutter is walked is on the axial line of shoulder hole, therefore it is not susceptible to interfere, from the inwall without destroying shoulder hole, also ensure that the quality of chamfering simultaneously。

Claims

1. one kind is used for the thin-walled shoulder hole chamfering T-shaped milling cutter of umbrella tooth, it is characterized in that: it includes knife bar (1) and cutter head (2), described cutter head (2) is shaped in one end of knife bar (1), described cutter head (2) is provided with multiple milling edge (3), described milling edge (3) is upper offers milling face (4) on one end of knife bar (1), the angle of described milling face (4) and knife bar (1) axial line is 42 ° ~ 48 °, it is provided with chip area (5) between adjacent two milling edges (3), between the two side of described chip area (5), there is angle a。

2. one according to claim 1 is used for the thin-walled shoulder hole chamfering T-shaped milling cutter of umbrella tooth, it is characterised in that: described milling edge (3) is eight, and is evenly distributed on same circumference。

3. one according to claim 1 is used for the thin-walled shoulder hole chamfering T-shaped milling cutter of umbrella tooth, it is characterised in that: the radial end face of described milling edge (3) is arc surface, and eight arc surfaces are positioned on same circumference。

4. one according to claim 1 is used for the thin-walled shoulder hole chamfering T-shaped milling cutter of umbrella tooth, it is characterised in that: described angle a is 73 ° ~ 75 °。

5. one according to claim 1 is used for the thin-walled shoulder hole chamfering T-shaped milling cutter of umbrella tooth, it is characterised in that: the angle of described milling face (4) and knife bar (1) axial line is 45 °。