CN203236023U

CN203236023U - Countersunk drill

Info

Publication number: CN203236023U
Application number: CN 201220615477
Authority: CN
Inventors: 刘道全
Original assignee: Chongqing Lin Teng Machinery And Electronics Co Ltd
Current assignee: Chongqing Lin Teng Machinery And Electronics Co Ltd
Priority date: 2012-11-20
Filing date: 2012-11-20
Publication date: 2013-10-16
Anticipated expiration: 2022-11-20

Abstract

The utility model discloses a countersunk drill which comprises a drillstock and a drill bit body which are formed in an integrated mode. The drill bit body sequentially comprises a through hole drill bit, a countersunk drill bit and a chamfer bit. A chip removal groove is formed in the drill bit body, and a chip pocket is formed in the connecting position of the drillstock and the chip removal groove. According to the structure, the defects that when a drill bit is used for machining drill holes with different sizes, a cutter needs to be replaced, machining time is wasted, and chip removal capacity is not high are overcome. An improved drill bit is provided for machining the drill holes with the different sizes at the same time, only one process is needed to finish the drill hole machining, machining time is shortened, hole drilling efficiency is improved, meanwhile the drill bit has chip pocketing capacity, and service life of the drill bit is prolonged.

Description

A kind of countersunk drilling

Technical field

The utility model relates to a kind of machined and bores, particularly countersunk drilling.

Background technology

Drill bit is mach a kind of common tool, when holing, what generally need to face is the composite holes of through hole, counterbore, chamfering composition, process this class hole and generally need several roads drilling program, prior art is to change different drill bits according to the type in hole, cause the machining length that takes time, and boring can not guarantee certain axiality, working (machining) efficiency is low; The simultaneously reaming of a kind of drill bit and chamfering had appearred afterwards, but this drill bit all designs for a certain size in hole usually, in order to reach integrated effect, must be with all processing sections, once all stretch into work piece, in case it is not smooth that the consequence that may cause is chip removal, drill bit will be stuck, even fracture.

The utility model content

It is one-body molded that technical problem to be solved in the utility model provides a kind of counterbore, boring, chmfer bit, and can hold bits and process, and prevents that drill bit is stuck, even the countersunk drilling of fracture.

In order to solve the problems of the technologies described above, the utility model provides following technical scheme: a kind of countersunk drilling, comprise integrated drillstock and drill body, described drill body adopts coaxial stage, comprise successively Pylome drill, counter bore bit and chmfer bit, described drill body is provided with chip area, and the junction of drillstock and chip area is provided with chip pocket.

Further, the chamfering of described chmfer bit is 45 °.

Before the processing, fixed drill bit can be processed to drilling machine.

Advantage: 1, reaming, chamfer machining one-shot forming, avoid changing cutter, cause wasting process time; The precision of the hole axiality that 2, processes is high; 3, when the whole feedings of drill bit processing sections enter work piece, chip pocket can prevent that cutter is stuck, and has improved the service life of drill bit.

Description of drawings

Fig. 1 is structural representation of the present utility model.

The specific embodiment

As shown in Figure 1, the utility model is a kind of countersunk drilling, comprise integrated drillstock 2 and drill body 1, described drill body 1 adopts coaxial stage, comprise successively Pylome drill 3, counter bore bit 4 and chmfer bit 5, described drill body 1 is provided with chip area 6, and drillstock 2 is provided with chip pocket 7 with the junction of chip area 6.

The chamfering of described chmfer bit 5 is 45 °

Before the processing, fixed drill bit can be processed to drilling machine.

Add man-hour, Pylome drill 3 touches first object to be processed, locates first an aperture, then adjusts feed speed, begins to bore the hole of 7.2mm;

Then, counter bore bit 4 expands the smart hole that 8.5mm on the basis of the gross porosity of Pylome drill 3 expansion 7.2mm;

Then, chmfer bit 5 falls 45° angle after the reaming that counter bore bit 4 is finished;

Continue feeding, the whole feedings of processing sections enter work piece, and chip pocket 7 the insides can hold to unnecessary cutting swarf the bits processing simultaneously, prevent that drill bit is stuck because of in time chip removal.

Machine, reaming, chamfering, one-body molded.

Above-described only is preferred embodiment of the present utility model; should be understood that; for a person skilled in the art; under the prerequisite that does not break away from the utility model structure; can also make some distortion and improvement; these also should be considered as protection domain of the present utility model, and these can not affect effect and practical applicability that the utility model is implemented.

Claims

1. countersunk drilling, comprise integrated drillstock and drill body, described drill body adopts coaxial stage, comprises successively Pylome drill, counter bore bit and chmfer bit, described drill body is provided with chip area, it is characterized in that: the junction of drillstock and chip area is provided with chip pocket.

2. countersunk drilling as claimed in claim 1, it is characterized in that: the chamfering of described chmfer bit is 45 °.