CN221158875U - Anticreep split type thread milling cutter - Google Patents

Abstract

The utility model relates to the technical field of milling cutters, in particular to an anti-drop split type thread milling cutter, which comprises the following components: the utility model provides conditions for mutual abutting of blades by arranging the mutually communicated placing grooves, mutual abutting of the blades is realized by the folding plates, when one blade swings in opposite directions and moves in circumferential directions, the other blades are limited to move, and the advantages of mutual limiting, firm connection and more convenience in replacing of the blades are realized.

Description

Anticreep split type thread milling cutter

Technical Field

The application relates to the technical field of milling cutters, in particular to an anti-drop split type thread milling cutter.

Background

Conventionally, when machining threads, a threading tool is used for turning the threads, or a tap or a die is used for manually tapping or threading. With the development of the numerical control machining technology, a thread milling method using a thread milling cutter is widely used. The thread milling cutter is divided into an integral thread milling cutter and a split thread milling cutter according to whether the turning tool is separated from the cutter body or not, wherein the integral thread milling cutter is better in integral rigidity, but higher in use cost, and in the split thread milling cutter, the cutter is detachable after the cutter is worn, so that the use cost is lower.

I have a split type thread milling cutter now, as shown in FIG. 1, including a cutter body 90 and a plurality of blade 91, cutter body 90 has a plurality of mounting groove 901 that is annular and arranges, every all be equipped with a blade 91 in the mounting groove 901, blade 91 passes through the screw realization cutter body 90 threaded connection. However: each blade 91 is connected with the blade body 90 independently, and for installing the blade 91 conveniently, the installation slot 901 and the blade 91 have an installation gap, and this installation gap leads to the blade body 90 not being effectively fixed, the blade 91 will swing slightly after being stressed, and the processing quality is affected, and for avoiding this phenomenon, each blade 91 needs at least two screws to fasten, so as to limit the swing and movement of the blade 91, which leads to a large number of screws arranged on the blade body 90, and is troublesome when a plurality of blades 91 are detached and replaced.

Therefore, the need exists for providing an anti-drop split thread milling cutter with blades which are mutually limited, firmly connected and more convenient when a plurality of blades are disassembled and replaced.

Disclosure of Invention

The application mainly aims to provide an anti-falling split thread milling cutter, wherein the anti-falling split thread milling cutter comprises a cutter bar, a plurality of blades and a collecting plate, one end of the cutter bar is provided with a plurality of annular arrangement and mutually communicated placing grooves, each placing groove is internally provided with one blade, one end of each blade, which is far away from the cutter bar, is provided with a collecting part, the collecting plate is fixedly connected with one end of the cutter bar, which is provided with the placing grooves, and is pressed together, conditions are provided for mutual abutting of the blades by arranging the mutually communicated placing grooves, mutual abutting of the blades is realized by pressing the blades through the collecting plate, and when one blade abutted against each other swings in opposite directions and moves in circumferential directions, the rest blades limit movement of the blades.

The application further aims to provide an anti-drop split type thread milling cutter, wherein the cutter bar is provided with a plurality of first threaded holes at one end part of the placing groove, the collecting plate is provided with a plurality of second threaded holes, the cutter bar is in threaded connection with the collecting plate, the placing groove extends from one end surface of the cutter bar to the other end surface, the purpose that the blades can be taken out only by screwing screws arranged on the collecting plate is achieved, and compared with the prior art that at least two screws are arranged on each blade, the number of the screws is fewer, and the embodiment of the application has the advantage that the replacement of a plurality of blades is more convenient.

The application further provides an anti-falling split thread milling cutter, wherein the bottom of each placing groove is provided with a first jogged part, one end of each blade, which is away from the folding part, is provided with a second jogged part, when the blade is placed in the placing groove, the first jogged part and the second jogged part are in embedded connection, one end of each blade, which is provided with the folding part, is also provided with a first rotation preventing part, one side of the folding plate, which is provided with the round table cavity, is also provided with a second rotation preventing part, and when the folding plate is fixedly connected with the cutter bar, the first rotation preventing part is in embedded connection with the second rotation preventing part, and the blade is fixed through the embedded connection of the first rotation preventing part, the second rotation preventing part and the first rotation preventing part at two ends of the blade, so that the cutter blade is firmly connected.

In order to achieve at least one of the above objects, the present application provides an anti-drop split thread milling cutter, wherein the anti-drop split thread milling cutter comprises:

one end of the cutter bar is provided with a plurality of placing grooves which are annularly arranged and communicated with each other; and

The plurality of blades are arranged in each placing groove, and one end of each blade, which is away from the cutter bar, is provided with a folding part; and

And the collecting plate is fixedly connected with one end of the cutter bar, which is provided with the placing groove, and is used for pressing the blade.

In one or more embodiments of the present application, each of the folding portions is spliced with each other to form a first circular truncated cone, the folding plate has a circular truncated cone cavity, a radial dimension of an opening of the circular truncated cone cavity is smaller than a maximum radial dimension of the first circular truncated cone, and when the folding plate is fixedly connected with the cutter bar, the first circular truncated cone extends into the circular truncated cone cavity.

In one or more embodiments of the present application, a bottom of each of the placement grooves has a first engaging portion, and an end of each of the blades facing away from the folding portion has a second engaging portion, and when the blade is placed in the placement groove, the first engaging portion and the second engaging portion are in snap connection.

In one or more embodiments of the present application, a first rotation preventing portion is further disposed at an end of each blade having the folding portion, a second rotation preventing portion is further disposed at a side of the folding plate having the circular truncated cone cavity, and when the folding plate is fixedly connected to the cutter bar, the first rotation preventing portion is in snap connection with the second rotation preventing portion.

In one or more embodiments of the present application, the end portion of the cutter bar having the placement groove has a plurality of first screw holes, the collecting plate has a plurality of second screw holes, and the cutter bar is screwed with the collecting plate.

In one or more embodiments of the application, the end of the tool shank facing away from the blade has two grooves.

In one or more embodiments of the application, the tool bar has a coolant passage extending therethrough from an end of the tool bar facing away from the placement slot to a side of the tool bar.

In the embodiment of the application, the anti-falling split thread milling cutter comprises a cutter bar, a plurality of blades and a folding plate, wherein one end of the cutter bar is provided with a plurality of annular arrangement and mutually communicated placing grooves, each placing groove is internally provided with a blade, one end of each blade, which is far away from the cutter bar, is provided with a folding part, the folding plate is fixedly connected with one end of the cutter bar, which is provided with the placing grooves, and is used for pressing the blades, the mutually communicated placing grooves provide conditions for mutual abutting of the blades, the mutual abutting of the blades is realized through pressing the blades by the folding plate, and when one blade swings in opposite directions and moves in circumferential directions, the movement of the rest blades is limited, compared with the prior art, which is limited only by means of screws, the embodiment of the application has the advantage that the blades are mutually limited.

Drawings

These and/or other aspects and advantages of the present application will become more apparent and more readily appreciated from the following detailed description of the embodiments of the application, taken in conjunction with the accompanying drawings, wherein:

FIG. 1 illustrates a schematic structural view of a conventional split thread milling cutter;

FIG. 2 illustrates a schematic structural view of an anti-drop split thread milling cutter according to an embodiment of the present application;

FIG. 3 illustrates a schematic structural view of a tool bar;

FIG. 4 illustrates a schematic view of the blade at an angle;

FIG. 5 illustrates a schematic view of the structure of the blade at another angle;

FIG. 6 illustrates a schematic view of a plurality of blades spliced to one another;

Fig. 7 illustrates a schematic structural view of the folding plate.

Detailed Description

The terms and words used in the following description and claims are not limited to literal meanings, but are used only by the inventors to enable a clear and consistent understanding of the application. It will be apparent to those skilled in the art, therefore, that the following description of the various embodiments of the application is provided for illustration only and not for the purpose of limiting the application as defined by the appended claims and their equivalents.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

Although ordinal numbers such as "first," "second," etc., will be used to describe various components, those components are not limited herein. The term is used merely to distinguish one component from another. For example, a first component may be referred to as a second component, and likewise, a second component may be referred to as a first component, without departing from the teachings of the inventive concept. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular is intended to include the plural as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, or groups thereof.

Summary of the application

The existing split type threading tool is characterized in that each blade is connected with the tool body independently, and in order to facilitate installation of the blade, an installation gap exists between the installation groove and the blade, and the installation gap causes the tool body to be slightly swung after being stressed if the installation gap is not effectively fixed, so that the machining quality is affected, at least two screws are needed for fastening each blade to avoid the phenomenon, so that the swing and the movement of the blade are limited, the quantity of screws arranged on the tool body is large, and the process is troublesome when a plurality of blades are detached and replaced.

Based on the technical problems, the application provides the anti-falling split thread milling cutter, wherein the anti-falling split thread milling cutter is simple in structure, does not relate to complex manufacturing process and expensive materials, has higher economical efficiency, is easy to produce for manufacturers, is low in cost, is beneficial to controlling the production cost, and is further beneficial to product popularization and use.

An illustrative anti-drop split thread milling cutter,

Referring to fig. 2 to 7, an anti-drop split thread milling cutter according to a preferred embodiment of the present utility model includes a cutter bar 10 and a plurality of blades 20.

Specifically, to achieve the mutual limitation of the blades 20, as shown in fig. 3, one end of the cutter bar 10 has a plurality of positioning slots 101 which are annularly arranged and are mutually communicated, and each positioning slot 101 is internally provided with one blade 20. In the embodiment of the present application, the number of the placement grooves 101 is three, the included angle between two adjacent placement grooves 101 is 120 °, as shown in fig. 4, one end of each blade 20 has an obtuse angle portion 201, and when all three blades 20 are placed in the placement grooves 101, the obtuse angle portions 201 are spliced to form a circumferential angle. In addition, each of the placement grooves 101 extends from one end portion of the cutter bar 10 to the other end portion by a predetermined distance.

It should be noted that, when the three blades 20 are abutted against each other and are all connected with the cutter bar 10, each blade 20 is limited by the other two blades 20 and is difficult to swing in opposite directions and move in circumferential directions, and compared with the prior art that the blades 20 are independent from each other and are fixed by screws, the embodiment of the application realizes mutual limitation by the mutual abutment of the three blades 20.

In addition, in order to achieve the mutual abutment of the three blades 20, as shown in fig. 2 and 5, one end of each blade 20 facing away from the cutter bar 10 is provided with a folding portion 202, the anti-drop split thread milling cutter further comprises a folding plate 30, and the folding plate 30 is fixedly connected with one end of the cutter bar 10 provided with the placement groove 101 and presses the blades 20.

Specifically, in the embodiment of the present application, the folding portion 202 is a partial circular truncated cone, and when the three obtuse angle portions 201 are spliced to form a circumferential angle, as shown in fig. 6, each folding portion 202 is spliced to form a first circular truncated cone; in addition, as shown in fig. 7, the collecting plate 30 has a circular truncated cone cavity 301, the radial dimension of the cavity opening of the circular truncated cone cavity 301 is smaller than the maximum radial dimension of the first circular truncated cone, and when the collecting plate 30 is fixedly connected with the cutter bar 10, the first circular truncated cone extends into the circular truncated cone cavity 301.

In addition, in order to connect the folding plate 30 to the cutter bar 10, as shown in fig. 3, the cutter bar 10 has a plurality of first screw holes 102 at one end of the placement groove 101, and as shown in fig. 7, the folding plate 30 has a plurality of second screw holes 302, and the cutter bar 10 and the folding plate 30 are screwed into the second screw holes 302 and the first screw holes 102 to achieve a screw connection.

It should be noted that, since the radial dimension of the cavity opening of the circular table cavity 301 is smaller than the maximum radial dimension of the first circular table, as the processing personnel gradually tightens the screw and makes the folding plate 30 approach to the cutter bar 10, the cavity opening edge of the circular table cavity 301 will contact with the three folding portions 202, and gradually tightens the three folding portions 202, so as to ensure that the three blades 20 abut against each other. When the blade 20 needs to be replaced, only the screws on the collecting plate 30 are required to be unscrewed, and the collecting plate 30 is separated from the cutter bar 10, so that the blade 20 placed in the placement groove 101 can be taken out.

It should be noted that, at this time, the blade 20 is pressed by the folding plate 30, so that the preliminary fixing of the blade 20 is achieved, in order to further fix the blade 20, as shown in fig. 3 and fig. 4, the bottom of each placement groove 101 has a first engaging portion 103, one end of each blade 20 facing away from the folding portion 202 has a second engaging portion 203, and when the blade 20 is placed in the placement groove 101, the first engaging portion 103 and the second engaging portion 203 are in snap connection.

Specifically, in the embodiment of the present application, the first engaging portion 103 is a plurality of tooth slots arranged in an array, and the second engaging portion 203 is a plurality of tooth teeth arranged in an array, and the tooth teeth are engaged with the tooth slots when the blade 20 is placed in the placement groove 101. At this time, one end of the blade 20 is fixed by the first fitting portion 103 and the second fitting portion 203, and the other end of the blade 20 is fixed by pressing the folding plate 30.

In order to further fix the blades 20, prevent the blades 20 from being separated, and achieve the advantage of firm connection, as shown in fig. 5, one end of each blade 20 having the folding portion 202 further has a first rotation preventing portion 204, as shown in fig. 7, one side of the folding plate 30 having the circular table cavity 301 further has a second rotation preventing portion 303, and when the folding plate 30 is fixedly connected with the cutter bar 10, the first rotation preventing portion 204 is in snap connection with the second rotation preventing portion 303.

Specifically, in the embodiment of the present application, the first rotation preventing portion 204 is an obtuse isosceles triangle protrusion, when the three blades 20 are abutted against each other, the three first rotation preventing portions 204 are spliced to form an equilateral triangle protrusion, the second rotation preventing portion 303 is an equilateral triangle cavity, the second rotation preventing portion 303 extends from the bottom of the circular table cavity 301 to a direction away from the cutter bar 10 by a predetermined distance, and when the collecting plate 30 is fixedly connected with the cutter bar 10, the equilateral triangle formed by the splicing of the three first rotation preventing portions 204 is attached to the groove surface of the second rotation preventing portion 303.

Further, to facilitate clamping of the cutter bar 10, as shown in fig. 2, an end of the cutter bar 10 facing away from the blade 20 has two grooves 104.

Further, to provide lubrication to the arbor 10, which will wear the blade 20, as shown in fig. 2, the arbor 10 has a coolant channel 105 extending therethrough from an end of the arbor 10 facing away from the placement groove 101 to a side of the arbor 10.

In summary, the anti-drop split thread milling cutter according to the embodiment of the application is illustrated, which provides the advantages of mutually limiting blades, firm connection, more convenience in replacing a plurality of blades and the like for the anti-drop split thread milling cutter.

It should be noted that in the embodiment of the application, the anti-drop split thread milling cutter has a simple structure, does not involve complex manufacturing process and expensive materials, and has higher economical efficiency. Meanwhile, for manufacturers, the anti-drop split thread milling cutter provided by the application is easy to produce, low in cost, more beneficial to control of production cost and further beneficial to product popularization and use.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The objects of the present utility model have been fully and effectively achieved. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from such principles.

Claims (7)

1. An anticreep split type thread milling cutter, its characterized in that: the anti-drop split thread milling cutter comprises

One end of the cutter bar is provided with a plurality of placing grooves which are annularly arranged and communicated with each other; and

The plurality of blades are arranged in each placing groove, and one end of each blade, which is away from the cutter bar, is provided with a folding part; and

And the collecting plate is fixedly connected with one end of the cutter bar, which is provided with the placing groove, and is used for pressing the blade.

2. The anti-drop split thread milling cutter according to claim 1, wherein: each folding part is spliced with each other to form a first round platform, the folding plate is provided with a round platform cavity, the radial size of the opening of the round platform cavity is smaller than the maximum radial size of the first round platform, and when the folding plate is fixedly connected with the cutter bar, the first round platform stretches into the round platform cavity.

3. The anti-drop split thread milling cutter according to claim 2, wherein: the bottom of each placing groove is provided with a first jogged part, one end of each blade, which is away from the folding part, is provided with a second jogged part, and when the blade is placed in the placing groove, the first jogged part and the second jogged part are connected in a clamping way.

4. The anti-drop split thread milling cutter according to claim 3, wherein: each blade has one end of closing the portion still has a first portion of preventing changeing, the receipts plywood has one side in round platform chamber still has a second portion of preventing changeing, when receipts plywood with cutter arbor fixed connection, first portion of preventing changeing with the second is prevented changeing the portion card and is inlayed and is connected.

5. The anti-drop split thread milling cutter according to any one of claims 1 to 4, wherein: the cutter arbor has the one end tip of standing groove has a plurality of first screw hole, the receipts plywood has a plurality of second screw hole, the cutter arbor with receive plywood threaded connection.

6. The anti-drop split thread milling cutter according to claim 5, wherein: one end of the cutter bar, which is away from the blade, is provided with two grooves.

7. The anti-drop split thread milling cutter of claim 6, wherein: the cutter bar is provided with a cooling liquid channel with two through ends, and the cooling liquid channel extends from one end part of the cutter bar, which is far away from the placing groove, to the side surface of the cutter bar.