CN205929086U - A drill bit for boring rectangular hole - Google Patents

Abstract

The utility model provides an arrange sediment and the good a drill bit for boring rectangular hole of radiating effect. This drill bit includes the first pipe of both ends open -ended and is fixed in the annular tool bit of first pipe one end, and the internal diameter of annular tool bit is lighter than first round bore of pipe, and the external diameter of annular tool bit is greater than the external diameter of first pipe, and annular tool bit interval is equipped with the logical groove that a plurality of extended to first pipe department, logical groove is on a parallel with the axial of first pipe. The waste residue that produces in drilling process can fall into two the tunnel, discharges the surface of first pipe backward along leading to the groove all the way, and can discharge along first pipe is inside in another way, just so increase the passageway of arranging the sediment, has improved the effect of row's sediment, can avoid the waste residue to gather and cause the temperature rise in tool bit department. The utility model discloses a drill bit for boring rectangular hole simple structure, drilling are effectual, and partial structure can used repeatedly, has saved the cost, has fine practicality, and be especially adapted in bore rectangular hole on materials such as glass, stone material, artificial agglomerated stone.

Description

A kind of drill bit for boring strip hole

Technical field

This utility model is related to a kind of drill bit.

Background technology

Traditional drill is typically all to be used for the shallower hole of depth, therefore its deslagging, radiate that it is excessive not need Consider.But in the deeper strip hole of drilling depth, if deslagging radiating is bad, waste residue will accumulate at drill bit, lead to bore Overheated and damage, waste residue is clipped between drill bit and hole wall, and drilling quality and drilling efficiency can be made to be greatly reduced.

Content of the invention

The purpose of this utility model is to propose the drill bit for boring strip hole of a kind of deslagging and good heat dissipation effect.

Drill bit for boring strip hole of the present utility model includes the first pipe of both ends open and is fixed on described first The annular cutter head of pipe one end, the internal diameter of described annular cutter head is less than the internal diameter of the first pipe, and the external diameter of annular cutter head is more than The external diameter of the first pipe, described annular cutter head is interval with several and extends to groove at the first pipe, and described groove is parallel Axial direction in the first pipe.

The waste residue producing in boring procedure can be divided into two-way, and a curb the appearance that groove is discharged into the first pipe backward Face, due to annular cutter head external diameter be more than the first pipe external diameter, the outer surface of the therefore first pipe with holed（Internal diameter and ring The external diameter of shape cutter head is identical）Hole wall between define empty avoiding portion, can as waste residue discharge passage；Another road can be by annular Cutter head enters into the inside of the first pipe, thus discharging along inside the first pipe, which adds the passage of deslagging, improving The effect of deslagging（Heat can be discharged together with waste residue）, waste residue can be avoided to gather at cutter head and cause in temperature Rise.

Further, the edge of described annular cutter head is provided with chamfering, with drill bit positioning when facilitating boring initial, it is to avoid bore Head slides in material surface hole to be drilled, affects drilling quality.

Further, described first pipe is provided with female thread away from one end of annular cutter head, female thread institute in the first pipe Internal diameter in position is more than the internal diameter at the first pipe other positions, and the first pipe passes through described female thread and the second pipe connects Connect, described second pipe both ends open, and the external diameter of the second pipe is less than or equal to the external diameter of the first pipe.In bore operation In, the abrasion of drill bit is very fast, and drill bit is once abrasion to a certain extent, is necessary for more bit change and connected first circle Pipe, if the first pipe is designed to consistent with the length of bored strip hole, then replacing the first pipe undoubtedly can cause larger Waste；This utility model, by the way of the first pipe is connected with the second pipe, only needs to change cutter head after tool bit abrasion And the first pipe that length is shorter, and the second pipe need not be changed, therefore save cost.By the limit to the second pipe external diameter System, can avoid the second pipe to contact with strip hole hole wall it is ensured that holing and deslagging effect.

Further, the internal diameter of described second pipe is more than or equal to the internal diameter of the first pipe, to avoid to the first circle In pipe, the discharge of waste residue causes to hinder.

Further, the tube wall of described first pipe is provided with water hole.Water hole has connected the inside and outside of pipe, By injecting cooling water into the first pipe, the second pipe, deslagging can be promoted, and take away rapidly heat produced by boring Amount.

Drill bit structure for boring strip hole of the present utility model is simple, drilling effect is good, and part-structure can repeat Use, save cost, there is good practicality, be very suitable for boring strip on the materials such as glass, stone material, artificial hilllock stone Hole.

Brief description

Fig. 1 is the front view of the drill bit for boring strip hole of the present utility model.

Fig. 2 is the sectional view of the drill bit for boring strip hole of the present utility model.

Fig. 3 is the side view in the cutter head direction of the drill bit for boring strip hole of the present utility model.

Accompanying drawing indicates：1st, the first pipe；11st, female thread；12nd, water hole；2nd, the second pipe；3rd, annular cutter head；31st, lead to Groove；32nd, chamfering.

Specific embodiment

Below against accompanying drawing, by the description to embodiment, for example involved to specific embodiment of the present utility model The shape of each component, construction, the mutual alignment between each several part and annexation, the effect of each several part and operation principle etc. make Further detailed description.

Embodiment 1：

As illustrated, the drill bit for boring strip hole of the present embodiment is by the first pipe 1 of both ends open, the second pipe 2 And annular cutter head 3 is constituted, annular cutter head 3, the second pipe 2 are individually fixed in the two ends of the first pipe 1, wherein annular cutter head 3 with First pipe 1 is welded and fixed, and the first pipe 1 is provided with female thread 11 away from one end of annular cutter head 3, and one end of the second pipe 2 sets There is the external screw thread with female thread 11 cooperation, in the first pipe 1, the internal diameter of female thread 11 position is more than the other position of the first pipe 1 Put the internal diameter at place, the first pipe 1 is connected with the second pipe 2 by screw thread pair.

The internal diameter of described annular cutter head 3 is less than the internal diameter of the first pipe 1, and the external diameter of annular cutter head 3 is more than the first pipe 1 External diameter, described annular cutter head 3 is interval with several and extends to the groove 31 at the first pipe 1（The i.e. end of the first pipe 1 Also have groove）, described groove 31 is parallel to the axial direction of the first pipe 1；The external diameter of the second pipe 2 is equal to the outer of the first pipe 1 Footpath, the internal diameter of the second pipe 2 is equal to the internal diameter of the first pipe 1.

The end edge of annular cutter head 3 is provided with chamfering 32, so that the end of annular cutter head 3 forms more sharp cone-shaped Shape, with drill bit positioning when facilitating boring initial, it is to avoid drill bit slides in material surface hole to be drilled, affects drilling quality.

The waste residue producing in boring procedure can be divided into two-way, and a curb groove 31 and is discharged into the first pipe 1 backward Outer surface, because the external diameter of annular cutter head 3 is more than the external diameter of the first pipe 1 and the second pipe 2, therefore first pipe the 1, second circle The outer surface of pipe 2 with holed（Internal diameter is identical with the external diameter of annular cutter head 3）Hole wall between define empty avoiding portion, can conduct The passage that waste residue is discharged；Another road can be entered into the inside of the first pipe 1 by annular cutter head 3, thus along the first pipe 1, The inside of two pipes 2 is discharged, and which adds the passage of deslagging, improves the effect of deslagging（Heat can be with waste residue one Rise and discharge）, waste residue can be avoided to gather at cutter head and cause temperature to rise.

In bore operation, the abrasion of drill bit is very fast, and drill bit once abrasion to a certain extent, be necessary for more bit change and Connected first pipe 1, in the present embodiment, only need to after tool bit abrasion change cutter head and length shorter first circle Pipe 1, and the second pipe 2 need not be changed, therefore save cost.

The tube wall of the first pipe 1 is provided with water hole 12.Water hole 12 has connected the inside and outside of pipe, by Injection cooling water in one pipe 1, the second pipe 2, can promote deslagging, and take away rapidly heat produced by boring.

Claims (5)

1. a kind of drill bit for boring strip hole is it is characterised in that including the first pipe of both ends open and being fixed on described first The annular cutter head of pipe one end, the internal diameter of described annular cutter head is less than the internal diameter of the first pipe, and the external diameter of annular cutter head is more than The external diameter of the first pipe, described annular cutter head is interval with several and extends to groove at the first pipe, and described groove is parallel Axial direction in the first pipe.

2. the drill bit for boring strip hole according to claim 1 is it is characterised in that the edge of described annular cutter head is provided with Chamfering.

3. the drill bit for boring strip hole according to claim 1 and 2 is it is characterised in that described first pipe is away from annular One end of cutter head is provided with female thread, and in the first pipe, the internal diameter of female thread position is more than interior at the first pipe other positions Footpath, the first pipe is connected with the second pipe by described female thread, described second pipe both ends open, and the external diameter of the second pipe External diameter less than or equal to the first pipe.

4. the drill bit for boring strip hole according to claim 3 is it is characterised in that the internal diameter of described second pipe is more than Or it is equal to the internal diameter of the first pipe.

5. the drill bit for boring strip hole according to claim 3 is it is characterised in that set on the tube wall of described first pipe There is water hole.