CN214079430U - Positioning connection structure of split drilling tool - Google Patents

Abstract

The utility model discloses a location connection structure of split type drilling tool, include: two positioning columns which are oppositely arranged on the replaceable head module; a limiting groove which is arranged at one end of the drill rod body and into which the positioning column can extend; each positioning column is spatially configured to be in a fan-shaped or triangular structure; each positioning column is provided with an arc-shaped surface which is in clearance fit and tangent in multiple sections on one side matched with the side wall of the limiting groove. The utility model provides a location connection structure of split type drilling tool, realize being connected of interchangeable head module and drilling rod, realize the split type of drilling tool body, modular design and manufacturing, make it for prior art, higher interchangeability has, better centering effect and more excellent cost advantage, the dysmorphism structure through the reference column is injectd simultaneously, make it when the installation the two when rotatory under the prerequisite of guaranteeing concentric and axial locking, realize the complete transmission of rotatory moment of torsion, guarantee the precision and the stability of its connection.

Description

Positioning connection structure of split drilling tool

Technical Field

The utility model relates to a machining cutter field. More specifically, the utility model relates to a location connection structure of split type drilling tool.

Background

The drilling tool is a tool used for drilling holes, drilling holes and the like, and generally comprises a drill body and a cutting edge part which are matched, wherein the cutting edge part is arranged on the drill body through a matched screw or welding mode and the like. In the actual production and use process, the sizes of drill bodies required by holes with various diameters and depths are also varied, so that the variety and the specification of the stock required by customers are very many, and the overall use cost is high. During the machining process, the losses of the drill body are divided into normal losses and abnormal losses: 1. long-time friction of scraps generated in the drilling process can cause damage (normal loss) of a drill body; 2. under the condition that the cutting edge is invalid or other abnormalities are not found, irreversible sudden damage (abnormal loss) of the drill body can be caused, so the loss cost of the drill body in the using process is higher; 3, this kind of condition also can exist when the moment of torsion is too big in the course of working in addition, and this will cause the scrapping of whole root pole, and the finished product is high.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to address at least the above problems and/or disadvantages, to enable interchangeability of replaceable head modules and versatility of drill pipe bodies, and to provide at least the advantages described hereinafter.

To achieve these objects and other advantages in accordance with the present invention, there is provided a positioning connection structure of a split type drilling tool, including:

two positioning columns which are oppositely arranged on the replaceable head module;

a limiting groove which is arranged at one end of the drill rod body and into which the positioning column can extend;

each positioning column is spatially configured to be in a fan-shaped or multi-lobe convex arc structure;

each positioning column is provided with an arc-shaped surface which is in clearance fit and tangent in multiple sections on one side matched with the side wall of the limiting groove.

Preferably, a positioning pin matched with one side surface of the positioning column is arranged in each limiting groove;

one side of each positioning column is provided with a positioning surface matched with the positioning pin;

each locating pin is provided with a limiting surface matched with the locating surface, and the limiting surfaces are arranged on the opposite sides in space.

Preferably, the positioning column is provided with a clamping column matched with the limiting surface;

the clamping column is provided with a conical fixing hole matched with the limiting screw at one side deviated from the limiting surface, and the replaceable head module is fixed in the axial direction through the matching of the conical hole and the conical screw.

Preferably, each positioning column is also provided with a water inlet communicated with a cooling hole on the drill rod;

wherein the water inlet holes are spatially arranged on different wedge-shaped surfaces.

Preferably, the center of the replaceable head module is provided with a drill point, and two sides of the replaceable head module are provided with matched drill cutters;

wherein the drill tip is spatially configured to be S-shaped;

and the drill tip and the replaceable head module are respectively provided with a second chip removal groove communicated with the first chip removal groove on the drill rod.

The utility model discloses at least, include following beneficial effect: one of which, the utility model discloses a structure to positioning mechanism is injectd, realizes being connected of interchangeable head module and drill rod, realizes split type, the modularized design and the manufacturing of drilling tool body for it has higher interchangeability for prior art, better centering effect and more excellent cost advantage, make it when the installation the two when the rotation under the prerequisite of guaranteeing concentric and axial locking, realize the complete transmission of rotatory moment of torsion, guarantee the precision and the stability of its connection.

Two, it is two, the utility model discloses a reference column brings the rotating surface of different space dimensions through the structural design of dysmorphism, the locating surface, make it rotate as required in fixed process, cooperate the plane of limitation on the locating pin simultaneously, accomplish closely laminating of reference column and locating pin structure each other in the space, further accomplish its rotational positioning back at the inside chucking of drilling rod through the screw, make its axial, radially and the stability in the space can both be taken into account, the structural cooperation stability and the stability in use of equipment self can both be guaranteed, guarantee its life, improve the utilization of resources efficiency and effectively reduce use cost.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic structural view of a positioning assembly and a positioning pin for fixing a replaceable head module and a drill rod according to an embodiment of the present invention;

FIG. 2 is a schematic view of an end of a drill rod according to another embodiment of the present invention;

fig. 3 is a schematic structural view of a drill rod body according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram of a positioning assembly according to another embodiment of the present invention;

fig. 5 is a schematic structural view of a drill tip according to another embodiment of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

It should be noted that in the description of the present invention, the terms indicating the orientation or the positional relationship are based on the orientation or the positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, such as "connected," which may be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, or a connection between two elements, and those skilled in the art will understand the specific meaning of the terms in the present invention in a specific context.

Furthermore, in the present disclosure, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature in direct contact with the first and second features, or in indirect contact with the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Fig. 1-3 show a positioning connection structure implementation form of a split type drilling tool according to the present invention, which includes:

the two positioning columns 2 are oppositely arranged on the replaceable head module 1 and are used for realizing connection with the drill rod body through the positioning columns;

the limiting groove 4 is arranged at one end of the drill rod body 3 and can be used for allowing the positioning column to extend into, is used for realizing connection of the limiting groove and the positioning column through matching, is matched with each other structurally, and is positioned through insertion;

the positioning columns are spatially configured to be in a fan-shaped or multi-lobe convex arc structure, and in the structure, the structure of the positioning columns is limited, so that when the positioning columns are matched with the limiting grooves, the positioning columns and the limiting grooves have interference, and the performance of equipment cannot be influenced by the accompanying rotation of the drill rod when the drill rod rotates;

each reference column is provided with clearance fit's arcwall face 5 with injecing the slot lateral wall one side of mutually supporting, and its effect lies in making the reference column have certain rotatory surplus, and the later stage of being convenient for is supporting when tight location through the screw, and its angle can be finely tuned and is guaranteed that its hangs down tight effect and satisfies operation requirement.

In another example as shown in fig. 1 and 4, a positioning pin 6 is disposed in each of the limiting grooves, and is used for limiting the position of the positioning pin by the action of the positioning pin, in actual operation, the positioning pin is inserted into the limiting groove, and the limiting groove is stepped outside the limiting groove in space for mounting the positioning pin, so that the positioning pin has a margin for rotation after being mounted;

one side of each positioning column is provided with a positioning surface 7 matched with the positioning pin;

each locating pin is provided with and locating surface matched with limited face 8, and in space the limited face is configured to in one side that keeps away from, in actual operation external action is rotatory, make the reference column in the limited inslot rotation, make each locating surface and complex limited face cooperate and paste closely, accomplish the two fixed, under this kind of structure, cooperation between face and the face is accomplished in the fixed chucking of structure on the axial, for original cylindricality locating pin and reference column, structure complex interference nature is better, the stability of structure is better.

As shown in fig. 1, in another example, a clamping column 9 matched with the limiting surface is arranged on the positioning column, in this structure, the positioning column and the positioning pin are matched in space through the matched clamping column, the clamping degree of the positioning column and the positioning pin is better, the spatial layout is better, and the stress uniformity is better;

wherein, the card post is provided with the toper fixed orifices 10 with injecing screw matched with in the one side that deviates from mutually with the plane of injecing, and then accomplish the fixed of interchangeable head module in the axial through the cooperation of bell mouth and conical screw, under this kind of structure, conical screw promotes the interchangeable head module rotatory, so that the locating surface contacts and fastens with the plane of injecing of locating pin, in concrete implementation, through the fixed orifices of the toper structure that sets up on the card post, its effect lies in only stretching into through the screw and has propulsive effort, make the reference column produce rotatoryly in injecing the inslot, carry out auxiliary axial positioning to it simultaneously, make interchangeable head module get into back chucking on vertical space, the interchangeable head module can not separate with the drilling rod under the effect of gravity.

In another example, as shown in fig. 2-5, each positioning column is further provided with a water inlet 11 communicated with a cooling hole 14 on the drill rod;

wherein the water inlet holes are spatially arranged on different wedge faces 12. Through the effect of inlet opening in this kind of structure, the cooling water passageway that sets up on the cooperation drilling rod converges, accomplishes the cooling of accomplishing the interchangeable head module and the drill point on it in the course of working, guarantees that its operating temperature is in rated range for its life controllability is good, and structural stability is strong.

In another example, as shown in fig. 5, the center of the replaceable head module is provided with a drill tip 13, and two sides of the replaceable head module are provided with symmetrically designed peripheral blades, which are used for drilling operation through the drill tip and reaming operation through the peripheral blades, so that the processing effect on holes is ensured and the processing rate is improved;

the drill point is arranged to be S-shaped in space, and compared with the existing direct connection of the top of the drill point and the side edge of the drill point, the drill point adopts arc connection, and forms a similar S structure in space, so that the width of a chisel edge of the drill point can be obviously increased, and the cutting angle is higher; the blade-shaped design has good structural stability and high strength, realizes the functions of increasing the strength of the chisel edge of the drill point and reducing the cutting resistance, is beneficial to forming drill cuttings with a spiral structure at the central part in the drilling process, has good forming degree, prevents the drilling tool from being blocked and ensures good drilling effect;

all be provided with on drill point, the interchangeable head module with the drilling rod on first chip groove 15 be the second chip groove 16 of intercommunication form, in this kind of structure, through the structural design to the chip groove for chip groove on its and the drilling rod is in the intercommunication form in the space, and structural being the spiral arranges, realizes the spiral chip removal, guarantees the smooth and easy nature of drilling and chip removal.

The above embodiments are merely illustrative of a preferred embodiment, but not limiting. When the utility model is implemented, the proper replacement and/or modification can be carried out according to the requirements of users.

The number of apparatuses and the scale of the process described here are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

While embodiments of the invention have been disclosed above, it is not intended to be limited to the applications listed in the specification and the examples. It can be applicable to various and be fit for the utility model discloses a field completely. Additional modifications will readily occur to those skilled in the art. The invention is therefore not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims (5)

1. A positioning connection structure of a split type drilling tool is characterized by comprising:

two positioning columns which are oppositely arranged on the replaceable head module;

a limiting groove which is arranged at one end of the drill rod body and into which the positioning column can extend;

each positioning column is spatially configured to be in a fan-shaped or multi-lobe convex arc structure;

each positioning column is provided with an arc-shaped surface which is in clearance fit and tangent in multiple sections on one side matched with the side wall of the limiting groove.

2. The split drilling tool positioning and connecting structure according to claim 1, wherein a positioning pin is provided in each of the limiting grooves to engage with a side surface of the positioning post;

one side of each positioning column is provided with a positioning surface matched with the positioning pin;

each locating pin is provided with a limiting surface matched with the locating surface, and the limiting surfaces are arranged on the opposite sides in space.

3. The split drilling tool positioning and connecting structure according to claim 2, wherein the positioning column is provided with a clamping column matched with the limiting surface;

the clamping column is provided with a conical fixing hole matched with the limiting screw at one side deviated from the limiting surface, and the replaceable head module is fixed in the axial direction through the matching of the conical hole and the conical screw.

4. The split drilling tool positioning and connecting structure as claimed in claim 3, wherein each positioning column is further provided with a water inlet communicated with the cooling hole on the drill rod;

wherein the water inlet holes are spatially arranged on different wedge-shaped surfaces.

5. The split drilling tool positioning and connecting structure according to claim 1, wherein the center of the replaceable head module is provided with a centering drill tip, and two sides of the replaceable head module are provided with completely symmetrically designed peripheral blades;

wherein the drill tip is spatially configured to be S-shaped;

and the drill tip and the replaceable head module are respectively provided with a second chip removal groove communicated with the first chip removal groove on the drill rod.

Images