CN216912222U - Tube plate hole processing drill bit - Google Patents

Abstract

The utility model discloses a tube plate hole processing drill, which comprises a tool handle, a tool body and a first cutting edge. The surface of the first cutting edge is provided with a second cutting edge, a first chip removal groove, a second chip removal groove, The first drill point chamfering rake face and the second drill point chamfering rake face. The drill bit for processing the hole in the tube sheet according to the utility model, through the provided cutter body structure, can check the scale line on the surface of the drill bit for measuring the drilled depth during the drilling process, so that the drilling depth can reach Construction requirements, reduce operating errors, and facilitate the actual drilling operation. By setting the first cutting edge structure, one end of the drill part is composed of the chamfered face of the drill tip. Drilling is carried out with the tip structure. Chip removal and impurity removal, surface heat is easier to transfer.

Description

A kind of drill bit for hole processing of tube sheet

technical field

The utility model relates to the technical field of tube plate hole processing structures, in particular to a tube plate hole processing drill.

Background technique

The drilling tool is the surface of the inner hole and one of the main surfaces on the part. According to the different functions of the part in the mechanical product, the inner hole of different structures has different precision and surface quality requirements. According to the relative connection relationship between the hole and other parts Different holes can be divided into matching holes and non-matching holes. According to their geometric characteristics, they can be divided into through holes, blind holes, stepped holes, tapered holes, etc. According to their different geometric shapes, they can be divided into round holes, non- Round holes, etc.; the existing drill for tube sheet hole processing has certain drawbacks in use. During the drilling process of the existing structure, when the hole depth is required to be high, workers can only judge the drilling according to experience. condition and depth error, and the chip removal and heat dissipation effect at the cutting head of the drill bit is poor.

Utility model content

The main purpose of the present invention is to provide a drill bit for processing a hole in a tube sheet, which can effectively solve the problems in the background technology.

To achieve the above purpose, the technical scheme adopted by the present utility model is:

A tube sheet hole processing drill, comprising a shank, a tool body and a first cutting edge, characterized in that: the surface of the first cutting edge is provided with a second cutting edge, a first chip removal groove, a second chip removal groove, a first cutting edge One drill point chamfering rake face and the second drill point chamfering rake face.

Preferably, the surface of the blade body is equidistantly provided with alloy cutting edges, the surface of the blade body is symmetrically provided with grooves, and the surface of the groove is provided with scale lines.

Preferably, two ends of the blade body are provided with insert rods, one end of the handle and the first cutting edge are provided with insert grooves, and the blade body, the handle and the first cutting edge are fixed by welding.

Preferably, the length of the first cutting edge and the second cutting edge is three centimeters.

Preferably, the first drill tip chamfering rake face and the second drill tip chamfering rake face are symmetrically distributed at the center of the end face of the blade body.

Preferably, a diamond bit is provided at the connection between the first drill tip chamfering rake face and the second drill tip chamfering rake face.

Compared with the prior art, the utility model has the following beneficial effects:

In the utility model, through the provided blade body structure, during the drilling process of the user, the equidistantly arranged alloy blade edges can effectively cut the tube sheet material on the basis of reducing the consumption of the alloy material, so that the deep hole machining of the tube sheet material can be cut effectively. The interior is kept smooth, and the groove can also function as a chip flute, so that the debris generated by grinding can be discharged. During the processing, the worker can observe the processing length of the deep hole through the scale line, thereby reducing the error of the hole depth and reducing the hole depth. To ensure the accuracy of processing, check the scale line on the surface to measure the drilled depth, so that the drilling depth can meet the construction requirements, reduce the operation error, and facilitate the actual drilling operation. One end of the drill bit is composed of the chamfered face of the drill tip. Drilling is performed with a tip structure. With the chip removal groove, it can quickly remove chips and remove impurities, and the surface heat is easier to transfer.

Description of drawings

Fig. 1 is the overall structure schematic diagram of a kind of tube sheet hole processing drill bit of the present invention;

2 is a front view of the overall structure of a drill bit for processing a tube sheet hole of the present invention;

FIG. 3 is a schematic structural diagram of the first cutting edge assembly of a tube sheet hole machining drill bit of the present invention.

In the figure: 1. Tool shank; 2. Blade body; 201, Alloy blade; 202, Groove; 203, Tick mark; 3. First cutting edge; 301, Second cutting edge; 302, First chip flute; 303 , the second chip flute; 304, the chamfering face of the first drill point; 305, the chamfering face of the second drill point.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As shown in Figures 1-3, a drill bit for processing a tube sheet hole includes a handle 1, a blade body 2 and a first cutting edge 3. The surface of the first cutting edge 3 is provided with a second cutting edge 301 and a first chip flute 302. , the second chip flute 303, the first drill tip chamfering face 304 and the second drill tip chamfering face 305;

The surface of the blade body 2 is equidistantly provided with an alloy knife edge 201, the surface of the blade body 2 is symmetrically provided with a groove 202, the surface of the groove 202 is provided with a scale line 203, and the equidistantly arranged alloy knife edge 201 is on the basis of reducing the consumption of alloy materials, It can effectively cut the tube sheet material, so that the inside of the deep hole processing part of the tube sheet material remains smooth, and the groove 202 can also play the role of a chip flute, so that the chips generated by the grinding process are discharged. The scale line 203 can observe the processing length of the deep hole, thereby reducing the error of the hole depth and ensuring the accuracy of processing;

Both ends of the cutter body 2 are provided with insert rods, and one end of the tool handle 1 and the first cutting edge 3 is provided with an insert groove. The tool body 2, the tool handle 1 and the first cutting edge 3 are fixed by welding Insertion can make the center of the tool body 2, the tool handle 1 and the first cutting edge 3 aligned, which is convenient for the connection between the cutting edge and the chip flute, and the welding process is more convenient;

The length of the first cutting edge 3 and the second cutting edge 301 is three centimeters, when the first cutting edge 3 is completely submerged in the hole, the length of the deep hole machining can be confirmed to reach three centimeters;

The first chamfering face 304 and the second chamfering face 305 are symmetrically distributed at the center of the end face of the blade body 2, and the first chamfering face 304 and the second chamfering face are symmetrically distributed. 305 can make the drill bit uniform in the drilling process, and there will be no shaking due to the deviation from the center during the rotation of the drill bit;

A diamond drill bit is provided at the connection between the first drill tip chamfering face 304 and the second drill tip chamfering face 305. The diamond bit can accelerate the drilling speed, drill holes on the surface of the tube sheet faster, and can reduce drilling The wear effect of the operation on the drill bit itself.

Working principle: On the basis of reducing the consumption of alloy materials, the equidistantly arranged alloy knife edges 201 can effectively cut the tube sheet material, so that the inside of the deep hole processing of the tube sheet material remains smooth, and the grooves 202 can also play the role of chip removal grooves. During the processing, the worker can observe the processing length of the deep hole through the scale line 203, thereby reducing the error of the hole depth and ensuring the accuracy of processing. , the center of the tool body 2, the tool handle 1 and the first cutting edge 3 can be aligned, which is convenient for the connection between the cutting edge and the chip flute, and the welding process is more convenient. When the first cutting edge 3 is completely submerged in the hole, it can be confirmed The length of deep hole processing can reach three centimeters, and the symmetrical distribution of the first drill point chamfering face 304 and the second drill point chamfering face 305 can make the drill bit uniform in the drilling process, and will not cause the drill bit to rotate. During the process, the deviation from the center causes shaking. The diamond bit can accelerate the drilling speed, drill holes on the surface of the tube sheet faster, and reduce the wear effect of the drilling operation on the bit itself.

The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention There will also be various changes and improvements in the new model, which all fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. The utility model provides a tube plate hole processing drill bit, includes handle of a knife (1), blade (2) and first cutting edge (3), its characterized in that: the surface of the first cutting edge (3) is provided with a second cutting edge (301), a first chip groove (302), a second chip groove (303), a first drill tip chamfer cutter face (304) and a second drill tip chamfer cutter face (305).

2. The tube sheet hole processing drill bit of claim 1, characterized in that: alloy edge of a knife (201) has been seted up to the surface equidistance of blade (2), the surface symmetry of blade (2) is seted up flutedly (202), the surface of recess (202) is provided with scale mark (203).

3. The tube sheet hole processing drill bit of claim 1, characterized in that: the utility model discloses a scalpel handle, including blade (2), handle (1) and first cutting edge (3), the both ends of blade (2) are provided with the inserted bar, the caulking groove has been seted up to the one end of handle of a knife (1) and first cutting edge (3), blade (2), handle of a knife (1) and first cutting edge (3) are fixed through the welding mode.

4. The tube sheet hole processing drill bit of claim 1, characterized in that: the first cutting edge (3) and the second cutting edge (301) are three centimeters in length.

5. The tube sheet hole processing drill bit of claim 1, characterized in that: the first drill tip chamfer tool face (304) and the second drill tip chamfer tool face (305) are distributed in a centrosymmetric mode with the center of the end face of the tool body (2).

6. The tube sheet hole processing drill bit of claim 1, characterized in that: and a diamond drill bit is arranged at the joint of the first drill tip chamfer cutter surface (304) and the second drill tip chamfer cutter surface (305).

Images