CN201735847U

CN201735847U - Multi-functional drill

Info

Publication number: CN201735847U
Application number: CN2010202640762U
Authority: CN
Inventors: 蒋建伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-15
Filing date: 2010-07-15
Publication date: 2011-02-09
Anticipated expiration: 2020-07-15

Abstract

A multi-functional drill is characterized in that the drill comprises a first drill bit and a second drill bit sleeved over the first drill bit, the second drill bit has a molding penetrating trepanning arranged therein, the first drill bit penetrates telescopically in the trepanning and extends out from the lower end of the trepanning, the upper end of the trepanning is connected to an adjusting screw, and an adjusting screw is abutted against the tail end face of the first drill bit. The multi-functional drill can perform hole-drilling and chamfering at the same time, and is capable of manufacturing various stepped holes. The first drill bit can be used to drill holes and the second drill bit can be used to level head. The multi-functional drill is practical and convenient, and is simple in structure. External and internal drill bits are cooperatively connected with the spiral convex rib via the spiral groove and the length of the drill bit extended out can be regulated via the adjusting screw. The operation is quite simple. If necessary, a plurality of drill bits can be made for replacement.

Description

A kind of multi-functional brill

Technical field

The utility model relates to a kind of instrument of machining, especially a kind of multi-functional brill.

Background technology

At present, common brill is single type mostly, when the different aperture of drilling, use the brill subdrilling of small-bore often earlier, and then use wide-aperture drill bit instead, especially when needs were made shoulder hole or need boring and chamfering to finish in the lump, operating efficiency did not just reach requirement.Now, some improved brills have also appearred, as patent 88202619.4, can adjust the combination drill of rose reamer, comprise: drill bit, rose reamer and drillstock adapter sleeve, it is characterized in that rose reamer is a sheet, be connected with the protruding end of broach shell by two or more at least trip bolts, the other end of broach shell has compressible spring to be connected with the drillstock adapter sleeve that makes the drill bit location, it can be used for machining, boring is the combined drill of chamfering simultaneously, especially for the combination of monomers drill bit of processing a plurality of holes simultaneously,, adjust chamfer angle by the rose reamer on the broach shell, the degree of depth or shape, spacing contact on the broach shell, guarantee the limit feed of rose reamer, make the boring chamfering of being processed keep stable, but this combination drill structure is too complicated, relatively heavier, equal inconvenience is carried in use.Other has the patent No. 200920178820.4, a kind of hole enlargement drill bit, combine by big drill bit and little drill bit, its little chisel edge place is provided with the web thinning face, makes cutting resistance littler, and drilling is more laborsaving, chip removal is more smooth, but its bit location can not be regulated, and can only bore single aperture, and can not carry out other operations such as chamfering simultaneously.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of multi-functional brill simple in structure, easy to use at the above-mentioned state of the art, and not only boring, chamfering can be carried out simultaneously, and can also be made various shoulder holes, tack.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of multi-functional brill, it is characterized in that comprising first drill bit and second drill bit that is nested with outside first drill bit, wherein form the trepanning that runs through in second drill bit, the first drill bit adjustable ground is set in the trepanning and from the trepanning lower end and stretches out, the epimere of trepanning is connected with an adjustment screw, and the tail end face of this adjustment screw and first drill bit offsets.

As improvement, be shaped on the spiral convex rib with the helix groove fit of first drill bit in the trepanning hypomere of second drill bit, first drill bit is connected with second drill bit with the cooperation of spiral convex rib by the helix groove, but and spiral be set in slidably in second drill bit.

As improvement, be shaped on female thread structure in the trepanning epimere of described second drill bit, adjustment screw is by being threaded in the second drill bit top.

As improvement, the epimere of described second drill bit vertically offers a plurality of fixing elastic grooves of lathe of being convenient to along circumference.

Improve, described elastic groove is along circumference equally distributed three again.

At last, the end face of described adjustment screw is interior hexagon.

Compared with prior art, advantage of the present utility model is: creep into capable chamfering outside can utilizing in first bit bore, thereby realization boring is carried out simultaneously with chamfering; And can also make various shoulder holes; Can also utilize first bit bore, second drill bit carries out tack; Product structure is simple, convenient to use, practical; Two drill bits are connected by helix groove and spiral convex rib, and can regulate the length that drill bit stretches out by adjustment screw, operate very simple; And can make multiple drill bit combination as required, in order to change.

Description of drawings

Fig. 1 is a cutaway view of the present utility model;

Fig. 2 is STRUCTURE DECOMPOSITION figure of the present utility model;

Fig. 3 is a schematic perspective view of the present utility model;

Fig. 4 is the vertical view of Fig. 1;

Fig. 5 is the cross-sectional view of Fig. 1.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As shown in the figure, a kind of multi-functional brill, comprise first drill bit 1 and second drill bit 2 that is nested with outside first drill bit 1, wherein form the trepanning that runs through in second drill bit 2, be shaped on the spiral convex rib 6 that cooperates with the helix groove 5 of first drill bit 1 in the hypomere of trepanning, wherein the spacing of spiral convex rib 6 equates with the pitch of first drill bit 1, but such first drill bit 1 is plugged in second drill bit 2 slidably with regard to spiral, couple together with second drill bit 2, and the head of first drill bit 1 stretches out from the trepanning lower end; The trepanning epimere of described second drill bit 2 is shaped on female thread structure, adjustment screw 3 is arranged on second drill bit 2 movably by screw thread, and it is inconsistent with the afterbody of first drill bit 1, the end face of adjustment screw 3 is interior hexagon, can regulate by interior hexagonal, stretch outside length as long as just can regulate first drill bit 1 by adjustment screw 3 as required, very convenient; The epimere of described second drill bit 2 vertically evenly offers three elastic grooves 4 along circumference, and the chuck of being convenient on the lathe is clamped, and is used for fixing whole drill bit.Three elastic grooves 4 are equally distributed on periphery.

During use, can utilize first drill bit 1 to hole simultaneously, utilize second drill bit 2 to creep into capable chamfering, thereby realize making boring and chamfering to finish together; Also can utilize first drill bit 1 and second drill bit 2 in conjunction with making shoulder hole; Also can utilize the boring of first drill bit 1, and second drill bit 2 comes tack etc., and dismounting, change all easily, can multi-functionally use.

Claims

1. multi-functional brill, it is characterized in that: comprise first drill bit and second drill bit that is nested with outside first drill bit, wherein second drill bit forms the trepanning that runs through, telescopic being set in the trepanning and from the lower end of trepanning of first drill bit stretched out, the epimere of trepanning is connected with an adjustment screw, and the tail end face of this adjustment screw and first drill bit offsets.

2. multi-functional brill according to claim 1, it is characterized in that being shaped in the trepanning hypomere of described second drill bit spiral convex rib with the helix groove fit of first drill bit, first drill bit is connected with second drill bit with the cooperation of spiral convex rib by the helix groove, but and spiral be set in slidably in second drill bit.

3. multi-functional brill according to claim 1 is characterized in that being shaped on female thread structure in the trepanning epimere of described second drill bit, and adjustment screw is by being threaded in the second drill bit top.

4. according to claim 1 or 2 or 3 described multi-functional brills, it is characterized in that the epimere of described second drill bit vertically offers a plurality of elastic grooves of being convenient to the clamping of lathe stationary fixture along circumference.

5. multi-functional brill according to claim 4 is characterized in that described elastic groove is equally distributed three along circumference.

6. multi-functional brill according to claim 5, the end face that it is characterized in that described adjustment screw is interior hexagon.