CN201057199Y - Screw structure with six-edge cutting - Google Patents

Abstract

The utility model relates to a screw structure of six sword cutting of utensil mainly is cutting edge face one and cutting edge face two that are equipped with four sword in the screw drill blade portion, and wherein cutting edge face one is the symmetry and establishes on drilling edge portion both sides, and cutting edge face two also is relative position and establishes at the cutting part, and cutting edge face two respectively establishes the cutting angle for establishing on cutting edge face one end one side, and the diagonal angle between two cutting edge faces on the cutting part constitutes the drill blade portion that has six swords. The two-edge cutting angle is additionally arranged on the drilling edge part, so that a sharp drilling point part can be formed, the long and deep cutting through the first cutting edge surface is not needed, the drilling edge part can also keep a certain diameter width, the screw strength can be improved, and the drilling point part has the function of sharp cutting.

Description

Screw construction with six-blade cutting

technical field

The utility model relates to a screw structure with six cutting edges, in particular to a new utility model designer of a screw that can improve the strength of the screw, has a sharp-edged drill tip and can be quickly tapped.

Background technique

Generally, tail-cut drill screws are used in a wide range. If they are used in the construction industry, they must be used in large quantities. Therefore, whether the screw locking structure is good or not is related to the working time of the entire project. In the existing screw structure shown in Figure 6 and Figure 7, the screw rod 21 of the screw 2 is provided with a drill portion 22 below, wherein the drill portion 22 has a total of four blade portions such as blade face one 221 and blade face two 222 , by controlling the depth and angle of the first blade surface 221 and the second blade surface 222 formed by cutting, to determine the drill cutting edge degree and the structural strength of the drill edge portion 22; generally, the screw has a sharper drill edge effect, so the drill The forming cutting angle of the blade portion 22 is relatively large, so the thickness of the drill point is thin and sharp, that is, the structure of the drill portion 22 is fragile, and it is easy to be damaged during drilling; , The change of the angle will increase the thickness of the drill tip, which will make the drill tip not sharp enough.

Furthermore, the cutting edge surface 1 221 and the cutting edge surface 2 222 of the existing drill portion 22 are formed by clamping during processing, so the forming angle is not easy to control.

In view of the shortcomings of ordinary drill screws, some people have developed a self-tapping screw structure. This case is to improve the screw drill head. A flute, by adopting the arrangement of the flute to increase the cutting rate. And the described scheme is to adopt the eccentric angle to form the groove, so the blade angle is obviously in an eccentric state, and the drilling angle will inevitably be affected during the cutting process, and the recessed state of the groove has a certain depth, which must be applied in actual drilling. It is drilled under pressure, so the single point of the drill point is stressed, and it is also easily damaged by impact.

Contents of the invention

The main purpose of the present utility model is to provide a screw structure with six cutting edges, which can form a sharp drill point by adding two cutting angles to the drill edge without using the cutting edge Due to the long and deep cutting on the first surface, the drill edge can maintain a certain diameter width to improve the drilling strength, and at the same time make the drill tip have a sharp edge.

For realizing above-mentioned object, the technical scheme that the utility model adopts is:

A screw structure with six-edged cutting. There are four-edged blade surface 1 and blade surface 2 on the screw drill blade. The blade surface 1 is symmetrically arranged on both sides of the drill blade, and the blade surface 2 is also in the opposite position. It is located on the drill edge, and the second blade surface is located on the tail end side of the blade surface; it is characterized in that: on the drill edge portion, there are cutting angles on each of the opposite corners between the two edge blade surfaces, forming a six-edged blade. Drilling edge.

Compared with the prior art, the utility model adopting the above-mentioned technical solution has the advantages of:

The cutting angle of the original screw drill blade 12 is reduced, and the sharpness of the drill tip 13 is relatively improved, so the drilling effect is better, and the strength is also improved accordingly.

Description of drawings:

Shown in Fig. 1 is the appearance perspective view of the present utility model;

Shown in Fig. 2 is another perspective view of the appearance of the utility model;

Shown in Fig. 3 is the schematic plan view of the utility model;

Figure 4 is a partially enlarged schematic view of the drill portion of the utility model;

Figure 5 is a schematic plan view of the drill point of the utility model;

Figure 6 is a partial enlarged schematic view of the existing screw drill blade;

FIG. 7 is a schematic plan view of the tip of an existing screw drill.

Explanation of reference signs: 1-screw; 11-screw; 12-drilling edge; 121-blade face one; 122-blade face two; 123-cutting angle; 13-drill tip; 2-screw; 21-screw; 22-drilling edge portion; 221-blade surface one; 222-blade surface two.

Detailed ways

Please refer to Fig. 1 to Fig. 5, the screw structure of the tool six-edged cutting of the present utility model mainly comprises screw rod 11 and drill portion 12, and described drill portion 12 is provided with two symmetrical blade surfaces-121 and The two symmetrical blade surfaces 122 have four blade surfaces in total, and the blade surface 1 121 and the blade surface 2 122 form the drill point 13 . The angle formed by the blade surface-121 is related to the diameter width of the screw rod 11. If the diameter width is small, the drill blade portion 12 is too thin, which is easy to be damaged during the drilling process. If it is too thick, the drill tip portion 13 is too blunt and difficult to Drilling and blades are also unfavorable, so it is very important to grasp the depth and angle of the blade surface 121. Therefore, the first edge surface 121 and the second edge surface 122 of the drill portion 12 of the present invention are formed by milling, so the angle control is precise.

Because blade surface one 121 tail end is provided with blade surface two 122, promptly can constitute a drill tip portion 13, for the intensity and the sharp edge degree that promotes drill edge portion 12, be provided with cutting angle 123 on one side of blade surface one 121, make Drill tip portion 13 is sharper, but the depth and angle of blade face one 121 provided by blade face one 121 and blade face two 122 of drill blade portion are more sharp than that of drill blade portion 22 blade face one 221 shown in Fig. 6 and Fig. 7 Small, not easy to damage and break during actual drilling.

Therefore, the screw structure with six cutting edges of the utility model reduces the cutting angle of the original screw drill blade 12, and relatively improves the sharpness of the drill tip 13, so the drilling effect is better and the strength is also thereupon. Promoted.

The above description is only illustrative of the present utility model, rather than restrictive. Those of ordinary skill in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined in the claims. But all will fall within the limitable scope of the claims of the present utility model.

Claims (1)

1. the screw structural of tool six swords cutting, be provided with the blade face one and blade face two of four swords at the tommy bar blade, wherein blade face one is that symmetry is located on the drill lip portion both sides, and blade face two also is relative position and is located at drill lip portion, and blade face two is for being located on blade face one tail end one side; It is characterized in that:

In the drill lip portion between two-edged blade face the diagonal angle respectively establish with the Cutting angle, constitute drill lip portion with six swords.

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