CN216325367U

CN216325367U - Special hollow drill bit of metal sampler

Info

Publication number: CN216325367U
Application number: CN202122306457.3U
Authority: CN
Inventors: 肖志钢; 张永刚
Original assignee: Hubei Canghe Technology Co ltd
Current assignee: Hubei Canghe Technology Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-04-19
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses a hollow drill bit special for a metal sampler, which relates to the technical field of high-speed cutting tools and comprises a main body, wherein the main body is a hollow cylinder, the upper surface of the main body is provided with a cutter body, the cutter body comprises a plurality of drill bits, a hard alloy blade and a fixing screw, the bottom wall of the main body is provided with a concentricity step, the inner side wall of the main body is provided with a cutter bar connecting internal thread, the surface of each drill bit is provided with a negative cutter face, and the upper surface of the main body is equidistantly provided with a plurality of chip grooves positioned among the plurality of drill bits. According to the utility model, through reasonable design of the angle of the stepped cutting blade and design of the chip removal groove, a large amount of steel chips are thinned to the optimal size, so that chip removal is smooth, the blade can be reused only by replacing the hard alloy blade if damaged, the use cost is greatly reduced, the centering of the tool bit arranged in a staggered manner is accurate, the forward tolerance of the sampling diameter and no obvious taper are ensured, and the surface finish degree of a sample material reaches 6.3 um.

Description

Special hollow drill bit of metal sampler

Technical Field

The utility model relates to the technical field of high-speed cutters, in particular to a hollow drill bit special for a metal sampler.

Background

At present, the situation that large-size hole diameter needs to be drilled is frequently encountered in industrial production and various engineering designs, but when metal processing drilling is carried out, a drill bit bears large stress, and particularly when a large hole is drilled, the resistance of the drill bit is larger. In order to solve the problems, a hollow drill bit is used, namely a cavity is dug in the center of the drill bit, so that metal at the position of the whole hole does not need to be drilled and crushed, only a circle of metal needs to be drilled and the iron core in the cavity falls out when the hole is drilled. The current sampling device drill bit is made by sharp steel (W18Gr22v), because the sample diameter is little, can't install the carbide blade at the alloy cutter head terminal surface under the diameter 223mm-210mm condition, can only select W18Gr22v whole preparation cutting tool, integrated into one piece. However, the hardness of the material is poor and the material cannot resist high temperature, but high-speed cutting inevitably leads to high temperature. The cutting efficiency is low, the situation that the whole tool bit is broken in a workpiece often occurs, the service life is short, the manufacturing cost is too high, the popularization is not facilitated, and therefore the scheme is generated by intensive research aiming at the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a hollow drill bit special for a metal sampler, which aims to overcome the defects of easy breakage of a tool bit, low control precision in a workpiece, short service life and high cost in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a special hollow drill of metal sampler, includes the main part, the main part is hollow cylinder, its characterized in that: the improved cutter is characterized in that a cutter body is arranged on the upper surface of the main body and comprises a plurality of drill bits, a hard alloy blade and a fixing screw, the drill bits are arranged on the upper surface of the main body, a groove body is formed in each drill bit, and the hard alloy blade is arranged in the groove body at the upper end of each drill bit through the fixing screw.

Preferably, the concentricity step is arranged on the bottom wall of the main body, and a cutter bar connecting internal thread is arranged on the inner side wall of the main body.

Preferably, the drill bit quantity is 3 and above, and a plurality of the drill bit is central symmetry for the centre of a circle of main part, the drill bit surface is provided with the negative knife face, and the negative knife face is circular-arc.

Preferably, the main part upper surface equidistance is seted up and is located a plurality of junk slots between the drill bit, the junk slot is the taper.

Compared with the related art, the stopper rod control device provided by the utility model has the following beneficial effects:

1. the utility model provides the hard alloy blade and the chip removal groove, a large amount of steel chips are thinned to the optimal size through the reasonable design of the angle of the stepped cutting blade and the chip removal groove, so that the chip removal is smooth, the blade can be continuously reused only by replacing the hard alloy blade if the blade is damaged, the use cost is greatly reduced,

2. the utility model provides a main body and a plurality of drill bits, wherein the drill bits are uniformly distributed relative to the circle center of the main body and are centrosymmetric, and the cutter bar on the inner side wall of the main body is connected with the internal thread, so that the sampling centering of the cutter bits distributed in a staggered manner under the condition of a drilling machine at a higher rotating speed is more accurate, the forward tolerance and no obvious taper of a sampling diameter are ensured, and the surface finish degree of a sample material reaches 6.3 mu m.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a top view of the present invention;

in the figure: 1. a main body; 2. a cutter body; 21. a drill bit; 22. a cemented carbide blade; 23. fixing screws; 3. a negative tool face; 4. a chip groove; 5. a concentricity step; 6. the cutter bar is connected with the internal thread.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b): referring to fig. 1-3, a hollow drill bit special for a metal sampler comprises a main body 1, the main body 1 is a hollow cylinder, a cutter body 2 is arranged on the upper surface of the main body 1, the cutter body 2 comprises a plurality of drill bits 21, a hard alloy blade 22 and a fixing screw 23, the drill bits 21 are arranged on the upper surface of the main body 1, a groove body is arranged on the drill bits 21, the hard alloy blade 22 is arranged in the groove body at the upper end of the drill bits 21 through the fixing screw 23, a concentricity step 5 is arranged on the bottom wall of the main body 1, a cutter bar connecting internal thread 6 is arranged on the inner side wall of the main body 1, the number of the drill bits 21 is 3 or more, and a plurality of the drills 21 are centrosymmetric relative to the center of the circle of the main body 1, the surface of the drill 21 is provided with a negative tool face 3, and the negative knife face 3 is circular-arc, and the equidistance of the upper surface of the main body 1 is provided with a plurality of chip grooves 4 between the drill bits 21, and the chip grooves 4 are taper-shaped.

Specifically, the hard alloy blade 22 and the chip removal groove 4 are provided, a large amount of steel chips are thinned to the optimal size through the reasonable design of the stepped cutting blade angle and the chip removal groove 4, so that the chip removal is smooth, if the hard alloy blade 22 is damaged, the hard alloy blade 22 can be continuously reused only by replacing the hard alloy blade 22, and the use cost is greatly reduced.

Specifically, the utility model provides a main body 1 and a plurality of drill bits 21, wherein the plurality of drill bits 21 are uniformly distributed and centrosymmetrically arranged relative to the circle center of the main body 1, and the cutter bar on the inner side wall of the main body 1 is connected with the internal thread 6, so that the sampling centering of the cutter heads which are arranged in a staggered manner under the condition of a high rotating speed of a drilling machine is more accurate, the forward tolerance and no obvious taper of the sampling diameter are ensured, and the surface finish degree of a sample material reaches 6.3 um.

The working principle is as follows: when the drill bit is used, firstly, the carbide blade 22 within a proper diameter range is selected, the carbide blade 22 is connected to the groove of the drill bit 21 through the fixing threads 23 in sequence, then the main body 1 is connected to the cutter bar through the cutter bar connecting inner threads 6, the installation of the cutter head is completed at the moment, the drill bit is connected to the drill machine, the drill machine starts to align to a hole position, the carbide blade 22 is in contact with a workpiece to be machined, a large amount of steel scraps fall through the scrap discharge groove 4 after the drill machine starts to work, and finally the sampling work of the metal sampler is completed.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a special hollow drill of metal sampler, includes main part (1), main part (1) is hollow cylinder, its characterized in that: the utility model discloses a hard alloy cutter, including main part (1), cutter body (2) include a plurality of drill bits (21), carbide blade (22) and set screw (23), drill bit (21) set up in main part (1) upper surface, the cell body has been seted up on drill bit (21), carbide blade (22) are installed through set screw (23) in the cell body of drill bit (21) upper end.

2. The hollow drill bit special for the metal sampler as claimed in claim 1, characterized in that: concentricity step (5) have been seted up to main part (1) diapire, main part (1) inside wall is provided with cutter arbor and connects internal thread (6).

3. The hollow drill bit special for the metal sampler as claimed in claim 1, characterized in that: drill bit (21) quantity is 3 and above, and is a plurality of drill bit (21) is central symmetry for the centre of a circle of main part (1), drill bit (21) surface is provided with burden knife face (3), and burden knife face (3) are circular-arcly.

4. The hollow drill bit special for the metal sampler as claimed in claim 1, characterized in that: the main part (1) upper surface equidistance is seted up and is located a plurality of chip groove (4) between drill bit (21), chip groove (4) are the taper.