CN201201082Y

CN201201082Y - Combined type tool bit for processing screwed hole

Info

Publication number: CN201201082Y
Application number: CNU2008200469118U
Authority: CN
Inventors: 潘端明
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-25
Filing date: 2008-04-25
Publication date: 2009-03-04
Anticipated expiration: 2018-04-25

Abstract

The utility model discloses a combined cutter for processing a screwed hole, which comprises a screw tap. The cutter also comprises a chamfer cutter cover which is sleeved on the rear end of a screw cutting body land of the screw tap. A cutter tongue of the chamfer cutter cover is embedded to a cuttings chute on the screw tap. The inner diameter of a central through hole of the chamfer cutter cover is smaller than the outer diameter of the screw cutting body land of the screw tap. A compression spring is sleeved on the upper side of the chamfer cutter cover. A clamping ring is sleeved on the upper side of the compression spring. After the technical proposal is adopted, the tapping and chamfering working procedures can be continuously completed on a machine tool, thus the cost is saved and the work efficiency is improved.

Description

The modular cutting tool assembly of thread mill drilling

Technical field:

The utility model relates to metal Tapping Technology field, refers in particular to a kind of modular cutting tool assembly of thread mill drilling.

Background technology:

Usually using screw tap thread mill drilling, its procedure of processing is boring-chamfering-tapping, this processing method, and chamfering and tapping are finished by two procedures, need two machines and two workman's operations, waste time and energy, and production efficiency is low, and equipment has high input.

Summary of the invention:

The purpose of this utility model is in order to solve the shortcoming of above-mentioned prior art, a kind of modular cutting tool assembly that can finish tapping and chamfering process on a lathe continuously to be provided.

For achieving the above object, the technical scheme that the utility model provides is: the modular cutting tool assembly of thread mill drilling, include screw tap, and also comprise the chamfering broach shell, the rose reamer cover is set in the screw chasing land rear end of screw tap, and the cutter tongue of chamfering broach shell and the chip area on the screw tap are inlayed.

In order further to improve this cutter, the utility model has also been done following improvement:

The central through hole internal diameter of chamfering broach shell is less than the external diameter of screw tap screw chasing land.

Above the chamfering broach shell, be set with the compression spring.

Above the compression spring, be set with pressure ring.

After adopting technique scheme, tapping and chamfering just can have been finished at a machine, and as long as people's operation than two machines of original needs and two people, is saved cost, increase work efficiency.

Description of drawings:

Fig. 1 is the perspective view of the modular cutting tool assembly of the utility model thread mill drilling;

Fig. 2 is the three-dimensional exploded view of the modular cutting tool assembly of the utility model thread mill drilling;

Fig. 3 is the chamfering broach shell three-dimensional structure diagram of the modular cutting tool assembly of the utility model thread mill drilling.

The specific embodiment:

Now 1～Fig. 3 elaborates the utility model in conjunction with the accompanying drawings:

This screw tap 1 has three chip areas 2, screw chasing land 3 places at screw tap 1 are movably installed with chamfering broach shell 4, the lower end of this chamfering broach shell 4 forms three place's cutter tongues 5, and the diameter of its central through hole 6 is less than screw chasing land 3 external diameters of screw tap 1, can prevent that chamfering broach shell 4 from dropping, cutter tongue 5 is inlayed with chip area 2, make chamfering broach shell 4 be subjected to the driving of screw tap 1 and rotation together, limiting chamfering broach shell 4 simultaneously can only be along the axially-movable of screw tap 1, above chamfering broach shell 4, be set with compression spring 7, above compression spring 7, be set with pressure ring 8, because the existence of compression spring 7 guarantees that chamfering broach shell 4 is compressed the pressure of spring 7 all the time in the process of tapping, when certain degree is arrived in tapping, chamfering broach shell 4 is under pressure and begins to carry out chamfering process, and pressure ring 8 can play the drill chuck three-jaw balancing spring on the auxiliary lathe.

During tapping, when the conehead precession workpiece hole to be processed of screw tap 4 certain depth, workpiece begins to withstand cutter tongue 5, chamfering broach shell 4 moves upward, compression spring 7 is compressed, and at this moment the cutter tongue 5 of chamfering broach shell 4 begins chamferings, and conehead revolves deeply more, chamfering is just big more, tapping and chamfering is combined in the procedure finishes.

Claims

1. the modular cutting tool assembly of thread mill drilling, include screw tap (1), it is characterized in that: also comprise chamfering broach shell (4), chamfering broach shell (4) is set in screw chasing land (3) rear end of screw tap (1), and the cutter tongue (5) of chamfering broach shell (4) is inlayed with the chip area (2) on the screw tap (1).

2. the modular cutting tool assembly of thread mill drilling according to claim 1, it is characterized in that: central through hole (6) internal diameter of chamfering broach shell (4) is less than the external diameter of screw tap (1) screw chasing land (3).

3. the modular cutting tool assembly of thread mill drilling according to claim 1 is characterized in that: be set with compression spring (7) in the top of chamfering broach shell (4).

4. the modular cutting tool assembly of thread mill drilling according to claim 3 is characterized in that: be set with pressure ring (8) in the top of compressing spring (7).