CN215392679U

CN215392679U - Novel side-fixing type drill bit shank

Info

Publication number: CN215392679U
Application number: CN202121582434.9U
Authority: CN
Inventors: 高怀伟; 闫亚盟
Original assignee: Binzhou Daisen Wheel Technology Co ltd
Current assignee: Binzhou Daisen Wheel Technology Co ltd
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2022-01-04
Anticipated expiration: 2031-07-12

Abstract

The utility model provides a novel side-fixed drill bit shank which comprises an integrally manufactured assembly column and a tool bit, wherein the assembly column comprises an A part, a B part and a C part which are sequentially arranged; wherein the part C is connected with the cutter head; the part A and the part C are cylinders with the radius of r and are positioned at two ends of the assembling column; the two ends of the part B are respectively connected with the part A and the part C, the part B comprises a part M and a part N, and the part N is positioned above the part M; the cross section of the M part is semicircular; and a locking inclined plane is arranged on the side surface of the N part, the distance between the locking inclined plane and the axis of the assembling column is h, and h is more than 0 and less than r. The side-fixing type drill bit shank has the advantages of reasonable design and strong practicability.

Description

Novel side-fixing type drill bit shank

Technical Field

The utility model relates to the technical field of metal drilling machining equipment, in particular to a novel side-fixed drill bit shank.

Background

The metal drilling machining is a common mode for drilling and deburring complete metal, and is widely applied to the aspects of automobile hub manufacturing, workpiece drilling and the like. In the processing of metal drilling, generally use the drill bit to connect the handle of a knife and go on, be about to the handle of a knife be connected to the drill bit on, the drill bit drives the motion of handle of a knife and accomplishes actions such as drilling.

In the installation process of the drill bit, the jackscrew is very easy to be locked on the edge of the locking inclined plane of the tool shank due to misoperation, so that the edge of the locking inclined plane is deformed, and the fit clearance between the drill bit tool shank and the drill chuck is small, so that the tool shank with the deformed locking edge is difficult to take out or carry out secondary installation and use, and the tool shank is wasted.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a novel side-fixed drill bit shank, in particular to a side-fixed drill bit shank which is provided with a locking inclined plane, and the distance between the locking inclined plane and the axis of an assembling column is smaller than the diameter of the assembling column. The side-fixing type drill bit shank has the advantages of reasonable design and strong practicability.

On the basis of the prior art, the utility model provides a novel side-fixed drill handle, which comprises an integrally manufactured assembly column and a tool bit, wherein the assembly column comprises an A part, a B part and a C part which are sequentially arranged; wherein the part C is connected with the cutter head;

the part A and the part C are cylinders with the radius of r and are positioned at two ends of the assembling column;

the two ends of the part B are respectively connected with the part A and the part C, the part B comprises a part M and a part N, and the part N is positioned above the part M; the cross section of the M part is semicircular;

and a locking inclined plane is arranged on the side surface of the N part, the distance between the locking inclined plane and the axis of the assembling column is h, and h is more than 0 and less than r.

Preferably, the maximum width of the locking ramp is less than the diameter of the mounting post.

Preferably, the distance h between the locking bevel and the axis of the mounting post gradually increases along the direction from the part C to the part A.

Preferably, the diameter of the mounting post is 16mm, and r is 8 mm.

Preferably, the angle of the locking inclined plane is 1-3 degrees, and the width of the locking inclined plane is gradually reduced from the part C to the part A.

Preferably, the minimum distance between the locking ramp and the axis of the mounting post is 6mm and the maximum distance is 7.3 mm.

Compared with the prior art, the locking device has the advantages that due to the arrangement of the locking inclined plane on the side surface of the N part, the locking jackscrew has a flat force application point during assembly, and the locking firmness is improved; through setting up the distance h between locking inclined plane and the erection column to set up h < r, make the edge of locking inclined plane in N portion within the diameter range of erection column, even the edge on locking inclined plane takes place to warp, still can not influence the assembly of handle of a knife and drill chuck, thereby avoid influencing the secondary use of handle of a knife because of locking inclined plane edge takes place to warp, the handle of a knife of being convenient for simultaneously takes out from the drill chuck. The side-fixing type drill bit handle has the advantages of reasonable design and strong practicability due to the arrangement. Install this side solid formula drill bit handle of a knife on the drill chuck, when locking jackscrew extrudeed the locking inclined plane on the edge produce the extrusion to the edge and make be convenient for produce the deformation, because the setting of eccentric plane for the deformation range is in the coverage of eccentric plane diameter, avoids the deformation position to surpass the fit clearance between drill bit handle of a knife and the drill chuck, makes the drill bit handle of a knife repetitious usage, avoids extravagant.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

Fig. 1 is a schematic structural view of a drill shank.

Fig. 2 is a cross-sectional view of the mounting post.

Fig. 3 is a cross-sectional view taken along line E of fig. 2.

In the figure, 1-assembly column, 101-A, 102-B, 1021-M, 1022-N, 103-C, 2-bit, 3-locking bevel, 4-axis.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all 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.

As shown in fig. 1-3, the utility model provides a novel side-fixed drill handle, which comprises an integrally manufactured assembly column 1 and a cutter head 2, wherein the assembly column 1 comprises an a part 101, a B part 102 and a C part 103 which are sequentially arranged; wherein the C-section 103 is connected to the cutting head 2;

the part a 101 and the part C103 are cylinders with radius r equal to 8mm, and the part a 101 and the part C103 are respectively positioned at two ends of the assembling column 1;

the two ends of the part B102 are respectively connected with the part A and the part C; the part B comprises an M part 1021 and an N part 1022, wherein the bottom surface of the N part 1022 is connected with the top surface of the M part 1021; the cross section of the M part 1021 is semicircular;

the side surface of the N part 1022 is provided with a locking inclined surface 3, and the maximum width of the locking inclined surface 3 is less than 16 mm;

the angle of the locking inclined plane 3 is between 1 degree and 3 degrees, and the width of the locking inclined plane 3 is gradually reduced from the part C103 to the part A101;

the distance between the locking inclined plane 3 and the axis 4 of the assembling column 1 is h; the distance h between the locking inclined surface 3 and the axis 4 of the assembling column 1 is gradually increased along the direction from the part C103 to the part A101;

in this embodiment, the minimum distance h between the locking ramp 3 and the axis 4 of the mounting post 1 is 6mm and the maximum distance h is 7.3 mm.

The present invention has been described in detail above. The terms "upper", "lower", "left" and "right" in the present embodiment are explained with respect to positions in the drawings of the specification. Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A novel side-fixed drill bit shank is characterized by comprising an integrally manufactured assembly column and a tool bit, wherein the assembly column comprises a part A, a part B and a part C which are sequentially arranged; wherein the part C is connected with the cutter head;

2. The new side mounted drill bit holder of claim 1 wherein the maximum width of the locking ramp is less than the diameter of the mounting post.

3. The novel side-fixing type drill holder as claimed in claim 1, wherein the distance h between the locking inclined surface and the axis of the assembling column is gradually increased along the direction from the part C to the part A.

4. The novel side-mounted drill bit holder according to any one of claims 1-3, wherein the diameter of the mounting post is 16mm, and r is 8 mm.

5. The novel side-mounted drill bit holder as recited in claim 4, wherein the locking bevel angle is between 1 ° and 3 °, and the width of the locking bevel decreases from the C-section to the A-section.

6. The novel side-mounted drill bit holder as recited in claim 5, wherein the minimum distance between the locking bevel and the axis of the mounting post is 6mm and the maximum distance is 7.3 mm.