CN213646005U

CN213646005U - Reverse flat-bottom counter boring drill structure

Info

Publication number: CN213646005U
Application number: CN202021706846.4U
Authority: CN
Inventors: 付凯元
Original assignee: Shaanxi Qianshan Avionics Co Ltd
Current assignee: Shaanxi Qianshan Avionics Co Ltd
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2021-07-09
Anticipated expiration: 2030-08-14

Abstract

The embodiment of the utility model provides a reverse flat-bottom countersink drill structure, belongs to machining and equips technical field, specifically includes, including the handle of a knife, the one end of handle of a knife is equipped with a plurality of cutting sword, and a plurality of cutting sword is located same horizontal plane. The tool handle is inserted into the flat-bottom counter bore through the box body, the cutting tool at one end of the tool handle is in contact with the flat-bottom counter bore, the other end of the tool handle is connected with the driving structure, the driving structure drives the tool handle to rotate, and the tool handle rotates to drive the cutting tool to reversely cut the flat-bottom counter bore. Through the processing scheme disclosed by the invention, the cost is low, the structure is simple, the processing efficiency of the flat-bottom counter bore is high, the condition that the machine case is scrapped due to the fact that the machine case is damaged is avoided, or the processing efficiency of the flat-bottom counter bore is influenced due to the fact that the machine case is required to be disassembled is avoided.

Description

Reverse flat-bottom counter boring drill structure

Technical Field

The utility model belongs to the technical field of machining equipment, a drill bit is related to, especially relate to a reverse flat-bottom countersink drill structure.

Background

At present, in the field of mechanical manufacturing, the situation that a box body needs to be processed in a manner of being back to a cylindrical counter bore is often encountered, for example, a case to be brazed, counter bore structures (flat-bottom counter bores) need to be added to an inner cavity of the case due to the fact that counter bore structures and other factors are missed when the case plate is designed or processed, and the case cannot be detached due to the fact that the counter bore structures are processed through the existing counter bore drills.

Therefore, it is necessary to redesign a countersink drill which reworks a countersink structure on the premise of destroying a chassis.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of this disclosure provides a reverse flat counterbore bores structure, during the use, through in the counter bore bores from the box reverse insertion flat counter bore, is connected with drive structure again to the processing of the flat counter bore of box has been realized, the utility model discloses a reverse flat counterbore bores the structure problem that exists among the prior art is solved to the part at least.

Realize the technical scheme of the utility model as follows: the utility model provides a reverse flat-bottom countersink drill structure, includes the handle of a knife, and the one end of handle of a knife is equipped with a plurality of cutting sword, and a plurality of cutting sword is located same horizontal plane.

The tool handle is inserted into the flat-bottom counter bore through the box body, the cutting tool at one end of the tool handle is in contact with the flat-bottom counter bore, the other end of the tool handle is connected with the driving structure, the driving structure drives the tool handle to rotate, and the tool handle rotates to drive the cutting tool to reversely cut the flat-bottom counter bore.

The utility model discloses a design reverse flat counter bore drill structure can be applicable to the flat counter bore that the normal machining of quick-witted incasement side can't be processed, and flat counter bore processing makes, through with the handle of a knife through the counter bore reverse insertion of the flat of quick-witted incasement, is connected with drive structure again, realizes the reverse counter bore to flat counter bore.

In one embodiment of the present invention, the cutting blade includes an arc-shaped blade body, and the arc-shaped blade body is provided with a cutting edge.

The utility model discloses an in the embodiment, in order to ensure that the hole center after flat base counter bore processing is the same with the position of the hole center before the processing, make the arc cutter body periphery of a plurality of cutting sword connect end to end in proper order and form cylindrical virtual region, cylindrical virtual region is coaxial with the handle of a knife.

In an embodiment of the present invention, in order to avoid friction damage to the flat-bottom inner wall of the counterbore caused by the arc-shaped outer peripheral surface of the cutting blade during machining, the arc-shaped outer peripheral surface of the arc-shaped cutter body is made to be a smooth surface.

The utility model discloses an in the embodiment, the ratio scope of the arc length an of arc cutter body and the thickness b of arc cutter body is 0.5 ~ 5, makes at 0.5 ~ 5 within range as the ratio of an and b, when can avoiding processing flat counter bore, the arc cutter body fracture of cutting sword and influence normal processing operation.

The utility model discloses an embodiment, in order to ensure the cutting edge of cutting sword to the cutting process of flat-bottom counter bore, avoid the cutting edge to appear turning up or cutting inefficiency, make the angle between cutting edge and the handle of a knife be 10 ~ 90.

In an embodiment of the present invention, there are 1-4 cutting knives, and 1-4 cutting knives are uniformly disposed on the peripheral wall of the knife handle.

Compared with the prior art, the utility model has the advantages that:

1. the reverse flat-bottom counter bore drill has the advantages of low structure cost, simple structure and high machining efficiency of the flat-bottom counter bore.

2. The reverse flat-bottom counter bore drilling structure carries out reverse processing on the flat-bottom counter bore, avoids the situation that the machine case is damaged to cause scrapping of the machine case or the machine case needs to be disassembled to influence the processing efficiency of the flat-bottom counter bore.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a perspective view of the reverse flat-bottom countersink drill structure of the present invention;

FIG. 2 is a bottom view of the reverse flat-bottom countersink drill structure of the present invention;

FIG. 3 is a front view of the reverse flat-bottom countersink drill structure of the present invention;

wherein, 1, a knife handle; 2. a cutting blade; 3. an arc-shaped cutter body; 4. a blade.

Detailed Description

The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present disclosure, and the drawings only show the components related to the present disclosure rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.

The embodiment of the disclosure provides a reverse flat-bottom counter boring drill structure, as shown in fig. 1-3, comprising a tool shank 1, wherein one end of the tool shank 1 is provided with a plurality of cutting tools 2, and the plurality of cutting tools 2 are positioned in the same horizontal plane.

The tool handle 1 is inserted into the flat-bottom counter bore through the box body, the cutting tool 2 at one end of the tool handle 1 is in contact with the flat-bottom counter bore, the other end of the tool handle 1 is connected with a driving structure (not shown in the attached drawing), the driving structure drives the tool handle 1 to rotate, and the tool handle 1 rotates to drive the cutting tool 2 to reversely cut the flat-bottom counter bore.

In a preferred embodiment of the present embodiment, the cutting blade 2 includes an arc-shaped blade body 3 as shown in fig. 1 to 3, and the cutting blade 3 is provided with a cutting edge 4.

In a preferred embodiment of the present embodiment, in order to ensure that the position of the hole center after the flat-bottom counter bore is processed is the same as that of the hole center before the flat-bottom counter bore is processed, the peripheries of the arc-shaped cutter bodies 3 of the plurality of cutting cutters 2 are sequentially connected end to form a cylindrical virtual area, and the cylindrical virtual area is coaxial with the cutter handle 1.

In a preferred embodiment of the present embodiment, in order to avoid the friction damage of the arc-shaped outer peripheral surface of the cutting blade 2 to the inner wall of the flat-bottomed counterbore during machining, the arc-shaped outer peripheral surface of the arc-shaped blade body 3 is made smooth.

In a preferred embodiment of the present embodiment, the ratio of the arc length a of the arc-shaped cutter body 3 to the thickness b of the arc-shaped cutter body 3 is in the range of 0.5 to 5, and when the ratio of a to b is in the range of 0.5 to 5, the arc-shaped cutter body 3 of the cutting tool 2 is prevented from being broken to affect normal machining operation when machining a flat-bottom counter bore.

In a preferred embodiment of the embodiment, in order to ensure that the cutting edge 4 of the cutting knife 2 performs cutting processing on the flat-bottom counter bore, the cutting edge 4 is prevented from turning outwards or the cutting efficiency is low, and the angle between the cutting edge 4 and the knife handle 1 is 10-90 degrees.

In a preferred embodiment of the present embodiment, there are 1 to 4

cutting blades

2, and 1 to 4 cutting blades 2 are uniformly disposed on the peripheral wall of the tool holder 1.

The reverse flat counterbore that the present embodiment is through designing reverse flat counterbore drill structure, can be applicable to the unable flat counter bore of processing of quick-witted incasement side normal machining, and flat counter bore processing makes, through with the handle of a knife through the reverse insertion of the flat counter bore of quick-witted incasement, is connected with drive structure again, realizes the reverse counterbore to flat counter bore.

The reverse flat bottom counter-boring drill structure is described below by taking the flat bottom counter-boring machining in the soldering case as an example.

The flat-bottom counter bore with the depth of 2-10 mm and the depth of 9.5 and 2-R5 in the inner cavity of the soldering machine box needs to be subjected to repair processing due to use requirements, but the frame cannot be disassembled due to welding forming, and the design requirement does not allow electric spark processing. Therefore, adopt the utility model discloses a reverse flat counterbore bores the structure and carries out reverse cutting process to its flat counter bore at present boring.

During processing, firstly, the cutter handle 1 is taken down from the driving structure, and the cutter handle 1 and the cutting blade 2 are arranged in the case;

secondly, reversely inserting the tool handle 1 connected with the driving structure from the flat-bottom counter bore to expose the tool handle 1 from the outside of the machine box, and connecting the tool handle 1 with the driving structure to enable the cutting tool 2 to be in contact with the flat-bottom counter bore;

then, a driving structure is driven to drive the cutter handle 1 to rotate, and the cutter handle 1 drives the cutting cutter 2 to rotate to process the flat-bottom sink until the cutting cutter 2 is completely exposed out of the flat-bottom sink of the chassis;

and finally, stopping driving the structure to finish the processing of the flat bottom of the case.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present disclosure should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a reverse flat-bottom countersink drill structure which characterized in that: the cutting tool comprises a tool handle, wherein a plurality of cutting tools are arranged at one end of the tool handle and are positioned in the same horizontal plane;

2. The reverse flat bottom countersink drill structure of claim 1, wherein: the cutting knife comprises an arc-shaped knife body, and a cutting edge is arranged on the arc-shaped knife body.

3. The reverse flat bottom countersink drill structure of claim 2, wherein: the peripheries of the arc-shaped cutter bodies of the plurality of cutting cutters are sequentially connected end to form a cylindrical virtual area, and the cylindrical virtual area is coaxial with the cutter handle.

4. The reverse flat bottom countersink drill structure of claim 3, wherein: the arc-shaped outer peripheral surface of the arc-shaped cutter body is a smooth surface.

5. The reverse flat bottom countersink drill structure of claim 4, wherein: the ratio range of the arc length a of the arc cutter body to the thickness b of the arc cutter body is 0.5-5.

6. The reverse flat bottom countersink drill structure of claim 2, wherein: the angle between the cutting edge and the knife handle is 10-90 degrees.

7. The reverse flat bottom countersink drill structure according to any one of claims 1 to 6, wherein: the number of the cutting knives is 1-4, and the 1-4 cutting knives are uniformly arranged on the peripheral wall of the knife handle.