CN214417735U - Single-hole limiting inclined-penetrating locking head-changing drill rod - Google Patents
Single-hole limiting inclined-penetrating locking head-changing drill rod Download PDFInfo
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- CN214417735U CN214417735U CN202120295072.9U CN202120295072U CN214417735U CN 214417735 U CN214417735 U CN 214417735U CN 202120295072 U CN202120295072 U CN 202120295072U CN 214417735 U CN214417735 U CN 214417735U
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Abstract
The utility model relates to a single-hole spacing is worn to lock to one side and is traded first drilling rod, for by the drill body, protect awl and cylindrical straight shank with the coaxial assembly of public axis, be equipped with the heliciform first chip groove and the second chip groove that use public axis as the center of symmetry, the drilling rod upper end is equipped with the mounting structure that is used for installing interchangeable drill point, the mounting structure is the semi-closed groove that uses public axis centrosymmetric, the groove has first bottom surface and second bottom surface, is the V-arrangement; the solid parts at two sides of the groove are orthogonal to the common axis and are obliquely crossed with the groove to be provided with mounting screw holes and mounting counter bores connected with the mounting screw holes, the mounting screw holes are used for being matched with the thread parts of the fastening screws, and the mounting counter bores are used for placing countersunk parts of the fastening screws; the solid parts on the two sides of the groove are arranged above the first bottom surface and the second bottom surface, below the installation screw holes and parallel to the installation screw holes, and are provided with limiting screw holes. The drill rod and the replaceable drill tip are stably fixed through the limiting screw and the fastening screw, the positioning is reliable, the loosening is avoided, and the replacement is convenient.
Description
Technical Field
The utility model relates to a spacing locking drill rod of trading head of wearing to one side of haplopore belongs to cutting tool technical field.
Background
At present, in a hole machining process, a hard alloy drill bit is widely adopted, but in large-diameter drilling machining, the whole hard alloy drill bit is expensive in manufacturing cost; especially in high-speed and high-efficiency drilling, the manufacturing cost of the internal-cooling type integral hard alloy drill bit is higher, and the drill bit is an inevitable technical path for low-cost processing. The prior art solutions have the following disadvantages, for example:
chinese patent No. CN202010877085.7 discloses "symmetrical inclined plane positioning replaceable drill", which is applied to drilling tools, and adopts three-screw mode for limiting and locking, so that the problems of complex installation action and low adjustment efficiency exist, and the problem of difficult disassembly caused by different expansion coefficients of the screw and the cutter body also exists in the trial process.
Chinese patent with patent application number CN201911099227.5 discloses a "double-sided limiting and obliquely penetrating locking drill bit changing", which also adopts three-screw mode for limiting and locking, and has the problems of complex installation action and low adjustment efficiency.
Chinese patent No. 201710517688.4 discloses a "high stability self-centering drill bit" in which the drill bit is positioned by a pin and is mounted on a cutter bar by rotational locking. The mounting mode is accurate in positioning, but the biggest problem is that the mounting part of the cutter bar is single-thin in structure, fatigue is easy to occur after multiple clamping, and the situation that the clamping force is reduced to further cause the failure of the drill bit with the replaceable drill point exists.
Chinese patent No. 201510252190.0 discloses a drill bit with a replaceable cutter head structure, which is positioned by a pin and fastened by a screw on a lateral side surface of the pin; there is also a problem that the mounting portion of the blade holder is structurally thin.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of prior art existence, provide a spacing oblique penetration locking of haplopore trades first drilling rod.
The purpose of the utility model is realized through the following technical scheme:
the single-hole limiting inclined-penetrating locking head-changing drill rod is characterized in that: the drill rod is a combination body formed by a drill body, a protection cone and a cylindrical straight shank which are coaxial by a common axis, and is provided with a spiral first chip removal groove and a spiral second chip removal groove which are symmetrical by the common axis, the upper end of the drill rod is provided with a mounting structure for mounting a replaceable drill tip, the mounting structure is a semi-closed groove which is symmetrical by the common axis, the groove is provided with a first bottom surface and a second bottom surface which are arranged in a V shape, and the first bottom surface and the second bottom surface are positioning surfaces;
the solid parts at two sides of the groove are orthogonal to the common axis and are obliquely crossed with the groove to be provided with mounting screw holes and mounting counter bores connected with the mounting screw holes, the mounting screw holes are used for being matched with the thread parts of the fastening screws, and the mounting counter bores are used for placing countersunk parts of the fastening screws; the fastening screw is locked, and the drill rod and the replaceable drill tip are distributed in a sandwich mode to form a whole;
the solid parts at two sides of the groove are arranged above the first bottom surface and the second bottom surface, below the mounting screw hole and parallel to the mounting screw hole, and are provided with limiting screw holes; the limit screw is screwed into the limit screw hole of the drill rod until the limit screw is abutted with the limit hole with the replaceable drill tip.
Further, the single-hole limiting obliquely-penetrating locking head-changing drill rod is characterized in that the first chip groove and the second chip groove of the drill rod are provided with designable section shapes on a T-T section perpendicular to a common axis, each section shape is formed by sequentially connecting four line sections, the starting section and the ending section are a first straight line section and a second straight line section, and the middle section is a first circular arc section and a second circular arc section.
Further, the single-hole limiting and obliquely penetrating locking head-changing drill rod is characterized in that a V-shaped included angle between the first bottom surface and the second bottom surface is 120-140 degrees.
Furthermore, the single-hole limiting and obliquely-penetrating locking head-changing drill rod is centrally and symmetrically distributed at 360 degrees on a common axis, and is provided with at least a first cooling channel and a second cooling channel which are communicated with the main cooling channel.
Furthermore, the single-hole limiting and obliquely penetrating locking head-changing drill rod is characterized in that a cylindrical straight handle at the lower end of the drill rod is provided with an internal thread for connecting an oil way, and a side pressure surface is arranged on the cylindrical straight handle.
Further, the single-hole limiting obliquely-penetrating locking head-changing drill rod is characterized in that the axis of the limiting screw hole and the common axis form an inclination angle of 80-90 degrees.
Compared with the prior art, the utility model have apparent advantage and beneficial effect, the concrete aspect that embodies is in following:
firstly, the single-hole limiting obliquely-penetrating locking head-changing drill rod of the utility model can be assembled with a replaceable drill point through the limiting screw and the fastening screw to form a single-hole limiting obliquely-penetrating locking head-changing drill for executing drilling processing; the replaceable drill point is convenient to replace under the condition that the cutter bar is not disassembled in use;
the upper part of the drill rod is provided with an installation structure, and a groove of the installation structure is provided with a V-shaped positioning bottom surface; the lower part of the replaceable drill point is provided with a V-shaped positioning surface, and the replaceable drill point and the V-shaped positioning structure of the drill rod have the same space angle and can be matched; after installation, the drill rod and the replaceable drill point share a common axis CL, so that the replaceable drill point and the drill rod are ensured to be coaxial with the common axis CL and are stably fixed on the drill rod;
the drill rod is provided with a limiting screw hole, and the drill rod and the replaceable drill point are reliably positioned and do not loosen in a working state of rotating in the CCW direction through the limiting screw;
fourthly, the drill rod is provided with a mounting counter bore and a mounting screw hole, and the replaceable drill point is fastened through a fastening screw; after installation, the replaceable drill tip and the drill rod are coaxial and share a common axis CL; after the fastening screw is locked, the drill rod and the replaceable drill point are distributed in a sandwich mode, and the replaceable drill point and the drill rod are firmly connected and form a whole;
during working, the cutting is carried out according to the CCW rotating direction, and the cutting is stable; the material grades and the geometric characteristics of different replaceable drill points can be selected according to the material of the workpiece; the replaceable drill point has the characteristics of simple structure, accurate positioning, high mechanical strength and the like, is reliable to install, remarkably prolongs the service life of the replaceable drill point, and is low in cost and good in economical efficiency.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1: the utility model discloses an assembly schematic diagram of the working state;
FIG. 2: the utility model is a three-dimensional schematic diagram;
FIG. 3: the front partial section view of the utility model is schematic;
FIG. 4: FIG. 3 is a schematic cross-sectional view X-X;
FIG. 5: the side partial schematic view of the utility model;
FIG. 6: FIG. 3 is a schematic cross-sectional view T-T;
FIG. 7: the utility model discloses a drill rod and drill point assembly diagram;
FIG. 8: the utility model discloses a schematic diagram of a cooling channel of a drill rod;
FIG. 9: the utility model discloses the schematic diagram of the cylinder straight shank of drilling rod.
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. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the directional terms and the sequence terms and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Referring to fig. 1-2, a single-hole position-limiting slant-through locking drill rod 100 is a coaxial combination of a drill body 109, a protection cone 107 and a cylindrical straight shank 106 along a common axis CL, and is used for being mounted on a replaceable drill tip 200 to become an important component of a drill bit 01.
As shown in fig. 2 to 6, the drill rod 100 is provided with a spiral first chip discharge groove 101A and a spiral second chip discharge groove 101B which are symmetrical about an axis CL and are used for discharging chips formed by drilling; the first chip discharge groove 101A and the second chip discharge groove 101B are provided with designed sections on a T-T section of a vertical axis CL, each section is formed by sequentially connecting four line sections, the starting section and the ending section are a first straight line section Z1 and a second straight line section Z2, the middle section is a first arc line section R1 and a second arc line section R2, and different arc radiuses and splicing angles can be selected according to different sizes of the drill rod 100; the first chip flute 101A and the second chip flute 101B can be regarded as the extension of the first chip flute 203A and the second chip flute 203B of the mounted replaceable drill tip 200 along the common axis CL on the drill rod 100, and the lengths can be adjusted according to the drilling depth;
the upper end of the drill rod 100 is provided with a mounting structure 102 for mounting the replaceable drill tip 200, the mounting structure 102 is a semi-closed groove 115 which is centrosymmetric about a common axis CL, the groove 115 is provided with a first bottom surface 110A and a second bottom surface 110B and is arranged in a V shape, the V-shaped included angle between the first bottom surface 110A and the second bottom surface 110B is 120-140 degrees, and the first bottom surface 110A and the second bottom surface 110B are positioning surfaces; when the replaceable drill tip 200 is installed, the replaceable drill tip 200 is matched with the V-shaped first positioning surface 205A and the second positioning surface 205B of the replaceable drill tip 200, so that the replaceable drill tip 200 and the drill rod 100 are coaxial with each other through a common axis CL;
the solid parts at two sides of the groove 115 are provided with an installation screw hole 103B and an installation counter bore 103A connected with the installation screw hole 103B, which are orthogonal to the common axis CL and are obliquely crossed with the groove 115, when in installation, the installation screw hole 103B is matched with the thread part of the fastening screw 300, and the installation counter bore 103A is used for placing the counter bore part of the fastening screw 300; after the fastening screw 300 is locked, the drill rod 100 and the replaceable drill tip 200 are distributed in a sandwich mode and are firmly integrated;
the solid parts at two sides of the groove 115 are arranged above the first bottom surface 110A and the second bottom surface 110B, below the mounting screw hole 103B and parallel to the mounting screw hole 103B, and are provided with limiting screw holes 104; the axis of the limiting screw hole 104 and the common axis CL form an inclination angle of 80-90 degrees;
as shown in fig. 3, 5 and 7, the single-hole limiting obliquely-penetrating locking head-changing drill rod 100 is used for installing the replaceable drill tip 200, and the limiting screw 400 is screwed into the limiting screw hole 104 of the drill rod 100 until being in contact with the limiting hole 204 of the replaceable drill tip 200, so that the possibility of upward movement of the replaceable drill tip 200 is inhibited; the first positioning surface 205A and the second positioning surface 205B of the replaceable drill tip 200 are matched with the first bottom surface 110A and the second bottom surface 110B of the installation structure of the drill rod 100, so that the replaceable drill tip 200 and the drill rod 100 are coaxial with each other by a common axis CL, the drill rod 100 and the replaceable drill tip 200 are reliably positioned in a working state of rotating in the CCW direction, the possibility of upward movement of the replaceable drill tip 200 is inhibited, the replaceable drill tip 200 is stably fixed on the drill rod 100 through the fastening screw 300, and the replaceable drill tip 200 is prevented from being loosened from the drill rod 100;
after installation, the drill rod 100 and the replaceable drill point 200 are combined into a single-hole limiting obliquely-penetrating locking head-changing drill 01, and reliable positioning and no loosening are ensured through the screw 400 under the working state that the drill rod and the replaceable drill point rotate in the CCW direction. After the tightening screw 300 is tightened, the drill rod 100 and the replaceable drill tip 200 are distributed in a "sandwich" manner. For performing a drilling process. The replaceable drill tip 200 can be conveniently replaced without disassembling the cutter bar 100 in use.
Referring to fig. 8-9, the replaceable drill tip 200 is centrally and symmetrically arranged at 360 ° about a common axis CL, and has at least a first cooling channel 120A and a second cooling channel 120B, the first cooling channel 120A and the second cooling channel 120B being in communication with the main cooling channel 105 for supplying cooling fluid to the replaceable drill tip 200; the cylindrical straight shank 106 at the lower end of the drill rod 100 is provided with pipe internal threads 116 for connecting an oil circuit, and cooling liquid is provided for the drill bit 01 during drilling; the cylindrical straight shank 106 is provided with a side pressing surface 108, so that the single-hole limiting and obliquely-penetrating locking head-changing drill 01 can be conveniently installed and used on a lathe.
The drill rod 100 is preferably made of high-quality alloy steel in consideration of more manufacturing cost, and may be made of hard alloy material by a grinding method. No matter what kind of material is adopted, the method can be realized by adopting a mechanical processing or 3D printing mode.
To sum up, the single-hole limiting obliquely-penetrating locking head-changing drill rod of the utility model can be assembled with the replaceable drill tip through the limiting screw and the fastening screw to form a single-hole limiting obliquely-penetrating locking head-changing drill for executing drilling processing; the replaceable drill point is convenient to replace under the condition that the cutter bar is not disassembled in use;
the upper part of the drill rod is provided with an installation structure, and a groove of the installation structure is provided with a V-shaped positioning bottom surface; the lower part of the replaceable drill point is provided with a V-shaped positioning surface, and the replaceable drill point and the V-shaped positioning structure of the drill rod have the same space angle and can be matched; after installation, the drill rod and the replaceable drill point share a common axis CL, so that the replaceable drill point and the drill rod are ensured to be coaxial with the common axis CL and are stably fixed on the drill rod;
the drill rod is provided with a limiting screw hole, and the drill rod and the replaceable drill point are reliably positioned and do not loosen in a working state of rotating in the CCW direction through the limiting screw;
the drill rod is provided with a mounting counter bore and a mounting screw hole, and the replaceable drill tip is fastened through a fastening screw; after installation, the replaceable drill tip and the drill rod are coaxial and share a common axis CL; after the fastening screw is locked, the drill rod and the replaceable drill point are distributed in a sandwich mode, and the replaceable drill point and the drill rod are firmly connected and form a whole;
the cutting is carried out according to the CCW rotating direction during working, and the cutting is stable; the material grades and the geometric characteristics of different replaceable drill points can be selected according to the material of the workpiece; the replaceable drill point has the characteristics of simple structure, accurate positioning, high mechanical strength and the like, is reliable to install, remarkably prolongs the service life of the replaceable drill point, and is low in cost and good in economical efficiency.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.
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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (6)
1. The spacing locking drill rod of trading head that wears to one side of haplopore, its characterized in that: the drill rod is an assembly formed by a drill body (109), a protective cone (107) and a cylindrical straight shank (106) which are coaxial with a common axis (CL), and is provided with a spiral first chip removal groove (101A) and a spiral second chip removal groove (101B) which take the common axis (CL) as a symmetrical center, the upper end of the drill rod (100) is provided with an installation structure (102) for installing a replaceable drill tip (200), the installation structure (102) is a semi-closed groove (115) which is symmetrical with the common axis (CL) as a center, the groove (115) is provided with a first bottom surface (110A) and a second bottom surface (110B) and is arranged in a V shape, and the first bottom surface (110A) and the second bottom surface (110B) are positioning surfaces;
solid parts on two sides of the groove (115) are orthogonal to the common axis (CL) and are obliquely provided with an installation screw hole (103B) and an installation counter bore (103A) connected with the installation screw hole (103B), the installation screw hole (103B) is used for being matched with a thread part of the fastening screw (300), and the installation counter bore (103A) is used for placing a counter bore part of the fastening screw (300); the fastening screw (300) is locked, and the drill rod (100) and the replaceable drill tip (200) are distributed in a sandwich mode to form a whole;
the solid parts on two sides of the groove (115) are arranged above the first bottom surface (110A) and the second bottom surface (110B), below the mounting screw hole (103B) and parallel to the mounting screw hole (103B), and are provided with limiting screw holes (104); the limiting screw (400) is screwed into the limiting screw hole (104) of the drill rod (100) until the limiting screw is abutted against the limiting hole (204) of the replaceable drill tip (200).
2. The single-hole limiting slant-through locking head-changing drill rod as claimed in claim 1, wherein: the drill rod (100) is characterized in that a first chip groove (101A) and a second chip groove (101B) of the drill rod (100) are provided with designable sections on a T-T section vertical to a common axis (CL), each section is formed by sequentially connecting four line sections, the starting section and the ending section are a first straight line section (Z1) and a second straight line section (Z2), and the middle section is a first arc line section (R1) and a second arc line section (R2).
3. The single-hole limiting slant-through locking head-changing drill rod as claimed in claim 1, wherein: the V-shaped included angle between the first bottom surface (110A) and the second bottom surface (110B) is 120-140 degrees.
4. The single-hole limiting slant-through locking head-changing drill rod as claimed in claim 1, wherein: the drill rod (100) is centrally and symmetrically distributed in 360 degrees by a common axis (CL), and is provided with at least a first cooling channel (120A) and a second cooling channel (120B), and the first cooling channel (120A) and the second cooling channel (120B) are communicated with the main cooling channel (105).
5. The single-hole limiting slant-through locking head-changing drill rod as claimed in claim 1, wherein: the cylindrical straight handle (106) at the lower end of the drill rod (100) is provided with an internal thread (116) for connecting an oil way, and the cylindrical straight handle (106) is provided with a side pressure surface (108).
6. The single-hole limiting slant-through locking head-changing drill rod as claimed in claim 1, wherein: the axis of the limiting screw hole (104) and the common axis (CL) form an inclination angle of 80-90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120295072.9U CN214417735U (en) | 2021-02-02 | 2021-02-02 | Single-hole limiting inclined-penetrating locking head-changing drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120295072.9U CN214417735U (en) | 2021-02-02 | 2021-02-02 | Single-hole limiting inclined-penetrating locking head-changing drill rod |
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| Publication Number | Publication Date |
|---|---|
| CN214417735U true CN214417735U (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120295072.9U Active CN214417735U (en) | 2021-02-02 | 2021-02-02 | Single-hole limiting inclined-penetrating locking head-changing drill rod |
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| CN (1) | CN214417735U (en) |
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- 2021-02-02 CN CN202120295072.9U patent/CN214417735U/en active Active
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