CN203316859U

CN203316859U - Screw hole tapping and chamfering cutter

Info

Publication number: CN203316859U
Application number: CN201320209590XU
Authority: CN
Inventors: 甄健松
Original assignee: HANGZHOU XINZHIYUAN CNC EQUIPMENT CO Ltd
Current assignee: HANGZHOU XINZHIYUAN CNC EQUIPMENT CO Ltd
Priority date: 2013-04-23
Filing date: 2013-04-23
Publication date: 2013-12-04
Anticipated expiration: 2023-04-23

Abstract

The utility model discloses a screw hole tapping and chamfering cutter which comprises a cutter arbor, wherein a tapping head is arranged at the front end of the cutter arbor; the outer circumference of the rear end of the cutter arbor is sleeved and fixed with a cutter handle; the outer circumference of the tapping head is glidingly sleeved with a chamfering knife; a spring is arranged between the chamfering knife and the cutter handle; and an inclined blade is arranged at the front end of the chamfering knife. According to the screw hole tapping and chamfering cutter, a tapping head at the front end of the cutter arbor is used for tapping, and at the same time, the chamfering knife which can elastically slide on the tapping head forwards and backwards is used for chamfering, so that tapping and chamfering are performed at the same time, and the tapping and chamfering efficiency can be improved remarkably.

Description

The screw hole tapping chamfering tool

Technical field

The utility model relates to the screw hole tapping chamfering tool.

Background technology

The Chinese utility model patent that Granted publication number is CN202291720U disclosed and a kind ofly aperture has been carried out during at withdrawing the screw tap of chamfering after can carrying out tapping to unthreaded hole on July 4th, 2012.The front portion of described screw tap is tapping section, and tapping section periphery has the tapping thread section that to cut groove and separate mutually; The rear portion of described screw tap is shank; It also comprises that is sleeved on a rose reamer that becomes moving sets to be connected with tapping section in tapping section; The endoporus of rose reamer is corresponding with the periphery of tapping section; When being provided with in normality between shank and rose reamer, make rose reamer be positioned at the flexible member of screw tap front end; Have cutting portion on the front end face of rose reamer, the front end face of rose reamer and cutting portion are central part outstanding taper forward; When the screw tap rotation is carried out tapping to hole, cutting portion can not be cut aperture; When screw tap reversion withdrawing, cutting portion is cut and chamfering aperture.

Although it has tapping and chamfering function concurrently, working (machining) efficiency is lower.

The utility model content

Technical problem to be solved in the utility model just is to provide a kind of screw hole tapping chamfering tool, improves tapping and chamfering efficiency.

For solving the problems of the technologies described above, the utility model adopts following technical scheme: the screw hole tapping chamfering tool, comprise knife bar, the knife bar front end is tapping-head, knife bar back end outer circumference side has been fixed by socket handle of a knife, it is characterized in that: described tapping-head outer circumferential sides is slidably socketed a rose reamer, between described rose reamer and handle of a knife, is provided with spring, and described rose reamer front end is provided with the blade of inclination.

Preferably, described handle of a knife front end and rose reamer rear end are provided with the cascaded surface of decline, and described cascaded surface is provided with draw-in groove, and described spring end is connected in described draw-in groove.

Preferably, described tapping-head outer circumference surface circumferentially evenly is provided with three deep-slotted chip breakers, and described deep-slotted chip breaker extends axially along tapping-head, and the corresponding described deep-slotted chip breaker of described rose reamer inner circumferential side is provided with slide block.

When screw hole tapping chamfering tool of the present utility model passes through the tapping-head tapping of knife bar front end, by can on tapping-head, carrying out chamfering by the rose reamer of front and back Elastic Sliding, when having realized tapping and chamfering, carry out, can significantly improve tapping and chamfering efficiency.

The accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model is further described:

Fig. 1 is screw hole tapping chamfering tool structural representation one;

Fig. 2 is screw hole tapping chamfering tool structural representation two;

Fig. 3 is the A-A cutaway view in Fig. 2;

Fig. 4 is the B-B cutaway view in Fig. 3.

The specific embodiment

Fig. 1 to Fig. 4 shows the concrete structure of screw hole tapping chamfering tool, it comprises knife bar 10, the knife bar front end is tapping-head 101, knife bar 10 back end outer circumference sides have been fixed by socket handle of a knife 103, described tapping-head 101 outer circumferential sides are slidably socketed a rose reamer 104, be provided with spring 105 between described rose reamer 104 and handle of a knife 103, described rose reamer 104 front ends are provided with the blade 106 of inclination.

Described handle of a knife 103 is multidiameter, and handle of a knife 103 front ends and rose reamer 104 rear ends are provided with the cascaded surface 107 of decline, and described cascaded surface 107 is provided with draw-in groove 108, and described spring 105 ends are connected in described draw-in groove 108.Both ends of the spring is fixed like this, is convenient to mounting spring.

Described tapping-head 101 outer circumference surfaces circumferentially evenly are provided with three deep-slotted chip breakers 102, and described deep-slotted chip breaker extends axially along tapping-head, and the corresponding described deep-slotted chip breaker 102 of described rose reamer 104 inner circumferential side is provided with slide block 109.Guiding restriction rose reamer is along the axial linear slide of tapping-head.

In the course of the work, the tapping-head of knife bar front end carries out tapping to screw hole tapping chamfering tool of the present utility model, and meanwhile, rose reamer axially travels forward and carries out chamfering along tapping-head under the effect of spring, when having realized tapping and chamfering, carries out.

Claims

1. screw hole tapping chamfering tool, comprise knife bar (10), the knife bar front end is tapping-head (101), knife bar (10) back end outer circumference side has been fixed by socket handle of a knife (103), it is characterized in that: described tapping-head (101) outer circumferential sides is slidably socketed a rose reamer (104), be provided with spring (105) between described rose reamer (104) and handle of a knife (103), described rose reamer (104) front end is provided with the blade (106) of inclination, described handle of a knife (103) front end and rose reamer (104) rear end are provided with the cascaded surface (107) of decline, described cascaded surface (107) is provided with draw-in groove (108), described spring (105) end is connected in described draw-in groove (108).

2. screw hole tapping chamfering tool according to claim 1, it is characterized in that: described tapping-head (101) outer circumference surface circumferentially evenly is provided with three deep-slotted chip breakers (102), described deep-slotted chip breaker extends axially along tapping-head, and the corresponding described deep-slotted chip breaker of described rose reamer (104) inner circumferential side (102) is provided with slide block (109).