CN202555872U

CN202555872U - Half-moon drill

Info

Publication number: CN202555872U
Application number: CN2012201395866U
Authority: CN
Inventors: 王玉明; 曾显胜
Original assignee: DALIAN HENGRUI PRECISION MACHINERY Co Ltd
Current assignee: DALIAN HENGRUI PRECISION MACHINERY Co Ltd
Priority date: 2012-04-05
Filing date: 2012-04-05
Publication date: 2012-11-28
Anticipated expiration: 2022-04-05

Abstract

A half-moon drill comprises a drill shank and a drill bit body. The drill bit body is installed in a drill bit seat of the drill shank and is a hollow semicircular body, a hollow part is a chip groove, a drill bit is arranged at the front end of the drill bit body, the drill shank is a cylinder, the front end face of the drill shank is provided with a slope surface, and the slope surface and the horizontal plane form an angle of 45 degrees. The half-moon drill solves the problem that the drill bit is damaged due to the fact that too many copper chips are blocked in the groove easily. A method of utilizing one blade and one chip groove is adopted, a chip removal space is increased, raw materials are saved by a half, the working efficiency is improved, and the production cost is greatly reduced.

Description

A kind of first quarter moon bores

Technical field

The utility model relates to a kind of machining tool, and particularly a kind of first quarter moon bores.

Background technology

When on copper, holing, because copper is softer and sticking, so be prone to cutting but be difficult for chip removal, the pattern of common drill bit is two cutting blades, two chip areas, and copper scale is many, and easy blocking causes bit wing blade greatly consume even breaking in groove.

The utility model content

The purpose of the utility model provides a kind of first quarter moon and bores, and this brill has solved more than the copper scale easy blocking and in groove, caused the problem that drill bit is damaged, and both provides cost savings, and has reduced the loss of drill bit again greatly.

The technical scheme that adopts is:

A kind of first quarter moon bores, and comprises drillstock and bit body, and bit body is installed on the drill headstock of drillstock;

Bit body is hollow semicircular bodies, and hollow parts is a chip area, and the bit body front end is provided with drill bit;

Above-mentioned drillstock is a cylinder, offers domaticly on the front end face of drillstock, domaticly becomes 45 with level;

Above-mentioned bit body middle part offers bending part;

The rear end of above-mentioned drillstock is provided with erecting bed.

The advantage of the utility model is:

The utility model adopts the mode of a chip area of a blade, has strengthened the chip removal space, and raw material have been saved half the; Improve production efficiency, reduced production cost significantly, can not reduce the rigidity of cutter again; Do not influence cutting effect; Scrap is directly discharged through domatic design, has reduced the degree of wear of cutter, has reduced the loss of cutter.

Description of drawings

Fig. 1 is the schematic top plan view of the utility model.

Fig. 2 is the schematic side view of the utility model.

Fig. 3 is the drill bit schematic cross-section of the utility model.

The specific embodiment

A kind of first quarter moon bores, and comprises drillstock 1 and bit body 2, and bit body 2 is installed on the drill headstock 5 of drillstock 1;

Bit body 2 is hollow semicircular bodies, and hollow parts is a chip area 3, and bit body 2 front ends are provided with drill bit 6;

Above-mentioned drillstock 1 is a cylinder, offers domatic 4, domatic 4 on the front end face of drillstock 1 and becomes 45 with level;

Above-mentioned bit body 2 middle parts offer bending part 7;

The rear end of above-mentioned drillstock 1 is provided with erecting bed 8.

Claims

1. a first quarter moon bores, and comprises drillstock (1) and bit body (2), and bit body (2) is installed on the drill headstock (5) of drillstock (1), it is characterized in that:

Bit body (2) is hollow semicircular bodies, and hollow parts is chip area (3), and bit body (2) front end is provided with drill bit (6).

2. a kind of first quarter moon according to claim 1 bores, and it is characterized in that: described drillstock (1) is a cylinder, offers on the front end face of drillstock (1) domatic (4), and domatic (4) become 45 with level.

3. a kind of first quarter moon according to claim 1 bores, and it is characterized in that: described bit body (2) middle part offers bending part (7).

4. a kind of first quarter moon according to claim 1 bores, and it is characterized in that: the rear end of described drillstock (1) is provided with erecting bed (8).