CN210160470U

CN210160470U - Cobalt-containing twist drill with good wear resistance of coating

Info

Publication number: CN210160470U
Application number: CN201920831139.9U
Authority: CN
Inventors: 刘涛
Original assignee: Danyang Huanyu Special Steel Co Ltd
Current assignee: Danyang Huanyu Special Steel Co Ltd
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-03-20
Anticipated expiration: 2029-06-04

Abstract

The utility model discloses a cobalt-containing twist drill that cladding material wearability is good, including twist drill bit and twist drill chuck, the fixed slot that four equidistance set up is seted up on the end of twist drill bit on the surface, the nickel-chromium alloy cladding material has been plated on the surface of twist drill bit, the fixed orifices has been seted up to the equidistance on the outer wall of twist drill chuck, the inside of fixed orifices inlays and is equipped with the fixed block, the fixed block is located the inside one end fixedly connected with fixture of twist drill chuck, fixed establishment has been cup jointed to twist drill chuck outside, the twist drill bit is held inside twist drill chuck additional, fix fixture through fixed establishment, when needing to be changed the twist drill bit, it makes the pressure of third scarf contact to the fourth inclined plane to rotate the fixed sleeve, and then make the fixed block kick-back through the spring, remove the joint relation of fixed fixture block and fixed slot, take out the twist drill bit, make operating personnel also can change the twist drill bit when not having screwdriver and the instrument of drill And the use is more convenient.

Description

Cobalt-containing twist drill with good wear resistance of coating

Technical Field

The utility model relates to a fluted drill technical field specifically is a cobalt-containing fluted drill that cladding material wearability is good.

Background

The cobalt-containing twist drill contains a chemical element cobalt (Co), and the purpose of adding cobalt into the raw material of the drill is to improve the high-temperature resistance and grinding resistance of the drill, so that the purpose of drilling is achieved. The cobalt-containing twist drill bit is generally divided into two types, namely cobalt-containing and high-cobalt, the materials are M35 and M42, the hardness of the cobalt drill bit is higher than that of a common twist drill, the existing cobalt-containing twist drill is fixed with a twist drill chuck through threaded connection and taper hole connection, tools such as a screwdriver and a drill chuck key clamping shaft are needed when the cobalt-containing twist drill bit is replaced, and the replacement of the twist drill bit cannot be completed without tools, so that the cobalt-containing twist drill bit is inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cobalt-containing twist drill that cladding material wearability is good to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a cobalt-containing twist drill that cladding material wearability is good, includes twist drill bit and twist drill chuck, the fixed slot that four equidistance set up is seted up on the terminal surface of twist drill bit, the nickel-chromium alloy cladding material has been plated on the surface of twist drill bit, the fixed orifices has been seted up to the equidistance on the outer wall of twist drill chuck, the inside of fixed orifices inlays and is equipped with the fixed block, the fixed block is located the inside one end fixedly connected with fixture of twist drill chuck, fixed establishment has been cup jointed to twist drill chuck outside, the twist drill bit adds and holds inside twist drill chuck.

Preferably, fixture includes the arc splint that four equidistance set up, four the arc splint all set up in the inside of fried dough twist drill chuck, the arc splint are close to the outside one end of fried dough twist drill chuck and are equipped with first inclined plane, four first inclined plane all sets up towards the axis of fried dough twist drill chuck, four first inclined plane all is towards the equal fixedly connected with fixture block in centraxonial one side of fried dough twist drill chuck, fixture block is close to the outside one end of fried dough twist drill chuck and is equipped with the second inclined plane, fixture block is corresponding with the fixed slot.

Preferably, the fixed establishment includes fixed sleeve, fixed sleeve rotates to cup joint on the outer wall of fried dough twist drill chuck, be equipped with the third inclined plane on the inner wall of fixed sleeve one side, the fixed block is located the outside one end of fried dough twist drill chuck and is equipped with the fourth inclined plane, the third inclined plane contacts with the fourth inclined plane, be equipped with first screw thread on the inner wall of fixed sleeve opposite side, be equipped with the second screw thread on the outer wall of fried dough twist drill chuck, first screw thread meshes with the second screw thread mutually, fixed cover has cup jointed rubber antiskid sleeve on fixed sleeve's the surface.

Preferably, the center inside the twist drill chuck is fixedly connected with a mounting block, the opposite surfaces of the mounting block and the four arc-shaped clamping plates are fixedly connected with corresponding spring mounting seats, and springs are arranged inside the spring mounting seats.

Preferably, four through holes are formed in the side wall, close to the opening, of the twist drill chuck, the limiting blocks are sleeved inside the through holes, and one ends of the limiting blocks are fixedly connected with the arc-shaped clamping plates.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model relates to a cobalt-containing twist drill that cladding material wearability is good, the utility model discloses be provided with the fixed slot, the fixed orifices, the fixed block, fixture and fixed establishment, through fixture, fixed slot and fixed block fasten the centre gripping with the twist drill bit, fix fixture through fixed establishment, when the twist drill bit needs to be changed, it makes the pressure of third inclined plane contact to the fourth inclined plane to rotate the fixed sleeve, and then make the fixed block kick-back through the spring, remove the joint relation of fixed fixture block and fixed slot, take out the twist drill bit, make operating personnel also can change the twist drill bit when not having screwdriver and drill bit clamp key axle these instruments, it is comparatively convenient to use.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of the twist drill bit of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

fig. 4 is an enlarged view of a portion B of fig. 1.

In the figure: 1. a twist drill bit; 2. fixing grooves; 3. a nickel-chromium alloy plating layer; 4. a twist drill chuck; 5. A fixing hole; 6. a fixed block; 7. a clamping mechanism; 71. an arc-shaped splint; 72. a first inclined plane; 73. fixing the fixture block; 74. a second inclined plane; 8. a fixing mechanism; 81. fixing the sleeve; 82. a third inclined plane; 83. a first thread; 84. a second thread; 85. a fourth slope; 9. mounting blocks; 10. a spring mount; 11. a spring; 12. a limiting block; 13. rubber antiskid sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a cobalt-containing twist drill that cladding material wearability is good, including twist drill bit 1 and twist drill chuck 4, the fixed slot 2 that four equidistance set up is seted up on the end of twist drill bit 1 on the surface, twist drill bit 1 has plated nickel-chromium alloy cladding material 3 on the surface, fixed orifices 5 have been seted up to the equidistance on twist drill chuck 4's the outer wall, fixed block 6 is inlayed to fixed orifices 5's inside, fixed block 6 is located the inside one end fixedly connected with fixture 7 of twist drill chuck 4, fixing mechanism 8 has been cup jointed to twist drill chuck 4 outside, twist drill bit 1 adds and holds inside twist drill chuck 4.

Fixture 7 includes the arc splint 71 that four equidistance set up, four arc splint 71 all set up in the inside of fried dough twist drill chuck 4, arc splint 71 is close to the outside one end of fried dough twist drill chuck 4 and is equipped with first inclined plane 72, four first inclined planes 72 all set up towards the axis of fried dough twist drill chuck 4, four first inclined planes 72 all are towards the equal fixedly connected with fixture block 73 in the centraxonial one side of fried dough twist drill chuck 4, fixture block 73 is close to the outside one end of fried dough twist drill chuck 4 and is equipped with second inclined plane 74, fixture block 73 is corresponding with fixed slot 2.

The fixing mechanism 8 comprises a fixing sleeve 81, the fixing sleeve 81 is rotatably sleeved on the outer wall of the twist drill chuck 4, a third inclined surface 82 is arranged on the inner wall of one side of the fixing sleeve 81, one end, located outside the twist drill chuck 4, of the fixing block 6 is provided with a fourth inclined surface 85, the third inclined surface 82 is in contact with the fourth inclined surface 85, a first thread 83 is arranged on the inner wall of the other side of the fixing sleeve 81, a second thread 84 is arranged on the outer wall of the twist drill chuck 4, the first thread 83 is meshed with the second thread 84, a rubber anti-skid sleeve 13 is fixedly sleeved on the outer surface of the fixing sleeve 81, and the rubber anti-skid sleeve 13 is convenient to rotate the fixing sleeve.

The inside center department fixedly connected with installation piece 9 of fried dough twist drill chuck 4, equal fixedly connected with corresponding spring mount pad 10 on the face that installation piece 9 and four arc splint 71 are relative, and the inside of spring mount pad 10 is equipped with spring 11, makes arc splint 71 outwards kick-back.

Set up the through-hole that four equidistance set up on the lateral wall that the fried dough twist drill chuck 4 is close to the opening part, stopper 12 has all been cup jointed to four through-hole insides, and the one end and the arc splint 71 fixed connection of stopper 12 carry on spacingly to arc splint 71, the better resilience that carries on of arc splint 71.

Specifically, when the twist drill bit 1 needs to be replaced, the twist drill chuck 4 is fixed, the fixing sleeve 81 is rotated through the first thread 83 and the second thread 84, the fixing sleeve 81 moves towards the closed end of the twist drill chuck 4, the pressure effect of the third inclined surface 82 on the fourth inclined surface 85 is further relieved, the spring 11 applies elasticity to the arc-shaped clamping plate 71, the fixing block 6 drives the arc-shaped clamping plate 71 to be outwards expanded, the fixing fixture block 73 is driven to be outwards expanded, the clamping relation between the fixing fixture block 73 and the fixing groove 2 is relieved, the twist drill bit 1 is taken out, when a new twist drill bit 1 is installed, the tail end of the twist drill bit 1 is inserted between the arc-shaped clamping plates 71 through the first inclined surface 72 and the second inclined surface 74, the fixing fixture block 73 corresponds to the fixing groove 2, the twist drill chuck 4 is fixed, the fixing sleeve 81 is rotated through the first thread 83 and the second thread 84, during the process, the fixing sleeve 81 moves towards the opening end of the twist drill chuck 4, and then the third inclined surface 82 applies pressure to the fourth inclined surface 85, so that the fixing block 6 moves inwards, the fixing clamping block 73 is driven to move inwards through the arc-shaped clamping plate 71, the fixing clamping block 73 is clamped into the fixing groove 2, and the twist drill chuck 4 is used for fastening and clamping the twist drill bit 1.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, 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, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a cobalt-containing twist drill that cladding material wearability is good, includes twist drill bit (1) and twist drill chuck (4), its characterized in that, fixed slot (2) that four equidistance set up are seted up on the terminal surface of twist drill bit (1), the nickel-chromium alloy cladding material (3) have been plated on the surface of twist drill bit (1), fixed orifices (5) have been seted up to the equidistance on the outer wall of twist drill chuck (4), the inside of fixed orifices (5) is inlayed and is equipped with fixed block (6), fixed block (6) are located the inside one end fixedly connected with fixture (7) of twist drill chuck (4), fixed establishment (8) have been cup jointed to twist drill chuck (4) outside, twist drill bit (1) is with holding inside twist drill chuck (4).

2. The cobalt-containing twist drill with good coating wear resistance according to claim 1, wherein the clamping mechanism (7) comprises four arc-shaped clamping plates (71) arranged at equal intervals, the four arc-shaped clamping plates (71) are all arranged inside the twist drill chuck (4), one end of each arc-shaped clamping plate (71) close to the outer portion of the twist drill chuck (4) is provided with a first inclined surface (72), the four first inclined surfaces (72) are all arranged towards the center axis of the twist drill chuck (4), one surfaces of the four first inclined surfaces (72) facing the center axis of the twist drill chuck (4) are all fixedly connected with fixing clamping blocks (73), one end of each fixing clamping block (73) close to the outer portion of the twist drill chuck (4) is provided with a second inclined surface (74), and the fixing clamping blocks (73) correspond to the fixing grooves (2).

3. The twist drill with cobalt coating having good wear resistance as claimed in claim 1, the fixing mechanism (8) comprises a fixing sleeve (81), the fixing sleeve (81) is rotatably sleeved on the outer wall of the twist drill chuck (4), a third inclined plane (82) is arranged on the inner wall of one side of the fixed sleeve (81), a fourth inclined plane (85) is arranged at one end of the fixed block (6) positioned outside the twist drill chuck (4), the third inclined plane (82) is contacted with the fourth inclined plane (85), the inner wall of the other side of the fixed sleeve (81) is provided with a first thread (83), the outer wall of the twist drill chuck (4) is provided with a second thread (84), the first thread (83) is engaged with the second thread (84), the outer surface of the fixed sleeve (81) is fixedly sleeved with a rubber anti-skidding sleeve (13).

4. The cobalt-containing twist drill with good coating wear resistance according to claim 1, wherein a mounting block (9) is fixedly connected to the center of the inside of the twist drill chuck (4), corresponding spring mounting seats (10) are fixedly connected to the opposite surfaces of the mounting block (9) and the four arc-shaped clamping plates (71), and springs (11) are arranged inside the spring mounting seats (10).

5. The cobalt-containing twist drill with the good wear resistance of the coating according to claim 1, wherein the side wall of the twist drill chuck (4) near the opening is provided with four through holes arranged at equal intervals, the inside of each of the four through holes is sleeved with a limit block (12), and one end of each limit block (12) is fixedly connected with the arc-shaped clamping plate (71).