CN205605120U

CN205605120U - Direction formula combination rock bit

Info

Publication number: CN205605120U
Application number: CN201620060424.1U
Authority: CN
Inventors: 陈永强; 杨代文
Original assignee: Guizhou Zhongzuan Machinery Equipment Co Ltd
Current assignee: Guizhou Zhongzuan Machinery Equipment Co Ltd
Priority date: 2016-01-22
Filing date: 2016-01-22
Publication date: 2016-09-28
Anticipated expiration: 2026-01-22

Abstract

The utility model discloses a direction formula combination rock bit belongs to rock bit, aim at providing one kind and creep into efficient, boring direction and be difficult to bias, long service life, with low costs, and the rock bit of the difficult emergence sticking of tool. It includes the drill bit body that is distributed and to be had the drill bit head of a plurality of alloy teeth and the trousers body that surface distribution has the spline to constitute by the terminal surface, it has a plurality of rows powder groove to distribute on the outer periphery of drill bit head, the terminal surface of this drill bit head have a plurality of with the wash port of the centre bore intercommunication of the trousers body, drill bit head (3) are connected through the screw thread and the trousers bodies (4). The utility model has the advantages of creep into efficient, good, difficult wearing and tearing of drilling guidance quality, with low costs, move back bore easy, the box -like rock bit of a species group.

Description

Guide type combination drills for stone

Technical field

This utility model relates to a kind of drills for stone, particularly relates to a kind of guide type combination drills for stone.

Background technology

At present, widely used drills for stone mostly are monolithic construction, have the disadvantage in that

During deep well drilling, due to complex geologic conditions (as big in rock particles change in size, face, rock stratum level of breakage is serious), when the carbide button of drill bit head is when crushing with rock cutting, and due to complexity and the unstability of rock texture, boring direction is susceptible to deviation.

Dropping between drilling rod and drill bit it addition, have rubble in drilling process, time after boring, recovery drilling tool, rubble can hinder drill bit to exit, and causes " card pricker ".

3rd, carbide button abrasion can cause the gap of carbide button end face distance drill bit head end face to diminish (i.e. chip space diminishes), and not in time, the rock slag being collected between carbide button end face and drill bit head end face can be crushed the row's of causing powder repeatedly；The most relatively low drilling efficiency, but also carbide button abrasion can be aggravated.

4th, owing to drill bit head and storehouse body are the fixing monolithic construction being connected, therefore after carbide button or drill bit head wear and tear, also drill bit entirety can only be scrapped even if the spline on diaper body surface does not wear and tear, cause cost increase.

Summary of the invention

For drawbacks described above present in prior art, this utility model aims to provide that a kind of drilling efficiency is high, boring direction is not easy deviation, length in service life, low cost, and the guide type being not susceptible to bit freezing combines drills for stone.

To achieve these goals, this utility model is by the following technical solutions: it includes the drill body that the drill bit head that multiple carbide button is distributed by end face and surface distributed have the diaper body of spline to constitute, multiple sludge groove is distributed on the outer circumference surface of described drill bit head, and the end face of this drill bit head has the osculum that the centre bore of multiple and described diaper body connects；Drill bit head is connected with diaper body by screw thread.

The end face of drill bit head is distributed multiple end face sludge grooves of corresponding with sludge groove for osculum connection；Described spline is the combined type spline formed by the long spline being in interval alternative distribution and short splined builtup, and each short spline has the powder outlet connected with centre bore；The rear end face of diaper body is evenly distributed with cutting tooth；The diameter of described combined type spline is less than drill bit head diameter.

Compared with the prior art, this utility model is owing to have employed technique scheme, the end face sludge groove in communicated drainage hole and sludge groove is added on the basis of original structure, even if carbide button weares and teares and causes chip space to diminish, rock slag also can enter sludge groove smoothly along end face sludge groove under the effect of gases at high pressure and discharge, and therefore can be prevented effectively from rock slag and pile up at drill bit head and cause carbide button abrasion aggravation.Further, since add the powder outlet connected with centre bore, therefore, it is possible to branch to spline discharge by posting the rock slag being gathered in drill bit head end face, make deslagging more smooth and easy；Thoroughly avoid rock slag repeatedly to be crushed and cause the defects such as low, the carbide button serious wear of drilling efficiency, extend service life of drill bit.3rd, owing to being uniformly arranged multiple cutting tooth at the rear end face of diaper body, therefore, it is possible to the rubble between drilling rod and drill bit that drops is crushed, thoroughly avoid " card pricker " phenomenon that conventional drill is easily formed when moving back brill.4th, owing to drill bit head have employed, with storehouse body, the fabricated structure threadeded, therefore after carbide button weares and teares, only need to change drill bit head, greatly reduce use cost.5th, the spline diameter owing to being distributed on the external periphery in storehouse is slightly less than drill bit head diameter, therefore can act the effect reducing drill bit deviation, guiding to righting in drilling process.

Accompanying drawing explanation

Fig. 1 is contour structures schematic diagram of the present utility model；

Fig. 2 is the A A sectional view in Fig. 1；

Fig. 3 is the top view in Fig. 1；

Fig. 4 is the face upwarding stereogram in Fig. 1.

In figure: carbide button 1, sludge groove 2, drill bit head 3, diaper body 4, short spline 5, powder outlet 6, cutting tooth 7, long spline 8, female thread 9, centre bore 10, osculum 11, end face sludge groove 12.

Detailed description of the invention

The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings:

As shown in figures 1-4: the drill bit head 3 that drill body is distributed carbide button 1 by end face is formed by connecting with the diaper body 4 with female thread 9 by screw thread；This storehouse body there are the centre bore 10 connected with female thread 9, the surface distributed of diaper body 4 have spline, drill bit head 3 have three osculums 11 connected with centre bore 10, three sludge grooves 2 on the outer circumference surface of this drill bit head, are distributed.

In order to increase chip space and be easy to chip removal, the end face at drill bit head 3 is distributed three end face sludge grooves 12 of corresponding with sludge groove 2 for osculum 11 connection.

In order to increase solid capacity further, described spline uses the combined type spline that the long spline 8 being in interval alternative distribution and short spline 5 combination are formed, and each short spline 5 has the powder outlet 6 connected with centre bore 10.

In order to when anti-retaining bores, drill bit is stuck by rubble, the rear end face in diaper body 4 is evenly distributed with cutting tooth 7.

In order to avoid boring direction glances off, the diameter of described combined type spline is less than drill bit head 3 diameter (diameter of the longest spline 8 and short spline 5 is less than drill bit head 3 diameter).

Claims

1. guide type combination drills for stone, the drill body having the diaper body of spline to constitute including drill bit head and surface distributed that multiple carbide button is distributed by end face, multiple sludge groove is distributed on the outer circumference surface of described drill bit head, and the end face of this drill bit head has the osculum that the centre bore of multiple and described diaper body connects；It is characterized in that: drill bit head (3) is connected with diaper body (4) by screw thread.

Guide type the most according to claim 1 combination drills for stone, it is characterised in that: the end face of drill bit head (3) is distributed multiple end face sludge grooves (12) of corresponding with sludge groove (2) for osculum (11) connection.

Guide type the most according to claim 1 and 2 combination drills for stone, it is characterized in that: described spline is to be combined, by the long spline (8) being in interval alternative distribution and short spline (5), the combined type spline formed, and each short spline (5) has the powder outlet (6) connected with centre bore (10).

Guide type the most according to claim 1 and 2 combination drills for stone, it is characterised in that: the rear end face of diaper body (4) is evenly distributed with cutting tooth (7).

Guide type the most according to claim 3 combination drills for stone, it is characterised in that: the rear end face of diaper body (4) is evenly distributed with cutting tooth (7).

Guide type the most according to claim 3 combination drills for stone, it is characterised in that: the diameter of described combined type spline is less than drill bit head (3) diameter.

Guide type the most according to claim 5 combination drills for stone, it is characterised in that: the diameter of described combined type spline is less than drill bit head (3) diameter.