CN201102272Y

CN201102272Y - Multi-blade multi-helix plough groove drill

Info

Publication number: CN201102272Y
Application number: CNU2007201294900U
Authority: CN
Inventors: 廖忠宏; 廖忠梁
Original assignee: KING DRILL PRECISION TOOLS CO Ltd
Current assignee: KING DRILL PRECISION TOOLS CO Ltd
Priority date: 2007-08-10
Filing date: 2007-08-10
Publication date: 2008-08-20
Anticipated expiration: 2017-08-10

Abstract

The utility model relates to a multi-blade multi-screw groove drill bit which comprises a cutting body, a groove part which is clamped and fixed at the cutting tool rest of a drill, a cutting part arranged at the edge of the groove part, a shaped cutting face arranged at the front end of the cutting part, a blade part formed at the cross part of the cutting face and the cutting part and a guide part which is placed at the center at the front end of the cutting body and is provided with taper drill screw threads, therefore, when being used, the blade part can increase the intensity of the cutting face, the increase of the outer diameter widths of the groove part and the cutting part can improve the whole structure intensity, which can prolong the service life and has satisfying cost benefit.

Description

Many spiral grooves of multiple-cutting-edge drill bit

Technical field

The utility model relates to a kind of many spiral grooves of multiple-cutting-edge drill bit, relates in particular to a kind ofly can improve service life and cost-effective solid center bit reinforced structure according to this.

Background technology

At present, general wood materials all need be processed operation through scrape, dig, saw, cut or boring etc., row assembling back is to be shaped to designed product again, as shown in Figure 5, front schematic perspective view for solid center bit commonly used, this solid center bit 3 is to include a main cutting portion 31 and a cutting guidance part 32, is provided with a tip 311 at these main cutting portion 31 front ends, two side peripheries; By this, when boring, at first utilize this cutting guidance part 32 on default timber, to get out one than small holes, with smooth-going guiding as the cutting initial stage, after treating that it pierces the timber top layer smoothly, utilize the down-cutting of taking advantage of a situation of this tip 311 again, carry out most cutting operation with this main cutting portion 31 at last, thereby can reach the cutting boring function of this solid center bit 3.

But, the tip of the main cutting portion front end two side peripheries of above-mentioned solid center bit commonly used is to be a pointed cone end face, and be subject to the flat and thin design of this main cutting portion, therefore can cause overall construction intensity not good, this tip is touched when general bore operation easily and is reclaimed the adamant of being hidden in the timber, make the fracture damage of this tip because be cut on this adamant, and then influence the boring job schedule of this solid center bit, cause this solid center bit limited on the effective utilization and use cost on waste.

Summary of the invention

Therefore, the purpose of this utility model is to overcome the existing deficiency of above-mentioned solid center bit commonly used and a kind of many spiral grooves of multiple-cutting-edge drill bit is provided, can widen and inwardly be shaped to the groove that a spiral angle has reduced by the external diameter of cutting portion own, and the confluce that is matched with cutting portion and cutting face forms a blade, drilling life of bit be can promote to reach, whole really tool industrial applicability and cost-benefit purpose made.

For achieving the above object, the utility model provides a kind of many spiral grooves of multiple-cutting-edge drill bit, it comprises: a cutting body, clamping is on the base of tool of a drilling machine, it has the groove of spiral helicine at least four spirals, be provided with a cutting part at this groove periphery, and be provided with a cutting face of shaping, form a blade in this cutting face and this cutting portion confluce in addition at this cutting portion front end; And a guidance part, be to be positioned at this cutting body front end center, and have the bore screw of taper.

In above-mentioned many spiral grooves of multiple-cutting-edge drill bit, the spiral angle θ of described groove can be reduced to 30 °, and this groove can increase the boring dynamics.

By this, when implementing, this blade can increase the intensity in this cutting face, and the external diameter width of this groove and this cutting portion increases, and then can promote overall construction intensity.

Description of drawings

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

Fig. 2 is a front of the present utility model schematic perspective view;

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

Fig. 4 is an embodiment schematic diagram of the present utility model;

Fig. 5 is the front schematic perspective view of this solid center bit commonly used.

The specific embodiment

Below with reference to accompanying drawing many spiral grooves of multiple-cutting-edge drill bit of the present utility model is described in further detail.

As shown in Figure 1 and Figure 2, be respectively schematic perspective view of the present utility model, front schematic perspective view, thus two figure as can be known the utility model comprise: one the cutting body 1, be clamped on the base of tool of a drilling machine, groove 11 with spiral helicine at least four spirals, be provided with a cutting part 12 in these groove 11 peripheries, and be provided with a cutting face 13, form a blade 14 in this cutting face 13 with these cutting portion 12 confluces in addition in these cutting portion 12 front ends; And a guidance part 2, be to be positioned at this cutting body 1 front end center, have the bore screw 21 of taper; By this, so that many spiral grooves of multiple-cutting-edge drill bit of tool timber feeding boring can be provided.

Described groove 11, the spiral angle θ of itself can be reduced to 30 °, makes drill bit when the feeding bore operation, can increase boring strength according to this.

Described cutting portion 12, itself be inwardly to be shaped to one to widen the groove 11 of thickening, the support force of this cutting portion 12 can be provided and promote cutting torsion, the utility model is also widened the external diameter of this cutting portion 12 simultaneously, to strengthen the center intensity of drill bit, so that the three-dimensional contouring of many spiral grooves of multiple-cutting-edge drill bit can be provided.

Described cutting face 13, be to form one with these cutting portion 12 intersections slightly to be sharp keen blade 14, make this cutting face 13 can thicken the formation strengthening effect, use the sharp-pointed face that improves its tip 311 of solid center bit 3 (please refer to Fig. 5) commonly used and when boring, touch adamant B (can with reference to as shown in Figure 4) and be easy to the disappearance that ruptures and damage.

As shown in Figure 3, be vertical view of the present utility model.As seen from the figure, aforesaid blade 14 makes the intensity in this cutting face 13 to increase fully for strengthening one of drill bit structure institute employing means, therefore can deal with abominable feeding bore operation.

As shown in Figure 4, be embodiment schematic diagram of the present utility model.By this figure as can be known, cutting body 1 of the present utility model is to utilize guidance part 2 embeddings of the bore screw 21 with taper to cut on timber A, so that further guide cuts portion 12 carries out main cutting bore operation; On the other hand, because general the recovery among the timber A that uses, may be implied with previous assembling processing industry residual adamant B, thereby can be by the design of blade 14 with groove 11, the external diameter that cooperates cutting portion 12 to widen simultaneously, increase overall construction intensity according to this, make this guidance part 2 can directly cut when in a single day meeting this adamant B and pass, therefore there is no the facts of damaging drill bit structure and take place with this cutting portion 12.

By forming with upper member, as shown in Figures 1 to 4, its cutting face 13 of many spiral grooves of multiple-cutting-edge drill bit of the present utility model forms a blade 14 with cutting portion 12 confluces, and this cutting portion 12 inwardly forms the structural design of a groove 11, can strengthen drill bit structure, make drill bit be unlikely to because of touching adamant B in the old timber damage of rupturing, thus drill bit consume cost can significantly be reduced, so that integral body has industrial applicability and economic benefit.

In sum, the utility model is compared with solid center bit commonly used, provide a kind of and form a blade in cutting face and cutting portion confluce, make its intensity that can increase this cutting face, and increase, to increase overall construction intensity by the external diameter width of groove and cutting portion, so when the feeding bore operation, make guidance part and cutting portion directly to cut and pass the interior adamant of timber, thereby can promote the service life of drill bit, so that integral body has industrial applicability and cost benefit really.

The embodiment of the above only is the technological thought and the characteristics of explanation the utility model, its purpose is to make to be familiar with those of ordinary skill in the art and can to understand within the utility model and to hold and implement according to this, when can not with qualification claim scope of the present utility model, i.e. equivalent variations or the modification of doing according to the spirit that the utility model disclosed generally must be encompassed in the scope of appended claims of the utility model.

Claims

1. many spiral grooves of multiple-cutting-edge drill bit comprises:

One cutting body, be clamped on the base of tool of a drilling machine, the groove that has spiral helicine at least four spirals on this cutting body, be provided with a cutting part at this groove periphery, and be provided with a cutting face of shaping at this cutting portion front end, form a blade in this cutting face and this cutting portion confluce in addition; And

One guidance part is positioned at this cutting body front end center, and this guidance part has the bore screw of taper.

2. many spiral grooves of multiple-cutting-edge drill bit as claimed in claim 1 is characterized in that the spiral angle θ of this groove can be reduced to 30 °, and this groove can increase the boring dynamics.