CN212945660U

CN212945660U - T-shaped milling cutter

Info

Publication number: CN212945660U
Application number: CN202021271457.3U
Authority: CN
Inventors: 何俊; 李博
Original assignee: Dongguan Oubidi Precision Hardware Co ltd
Current assignee: Dongguan Oubidi Precision Hardware Co ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2021-04-13
Anticipated expiration: 2030-07-01

Abstract

The utility model discloses a T-shaped milling cutter; the T-shaped milling cutter comprises a cutter handle; the cutter comprises a cutter handle, wherein a reference position for positioning the position of the cutter head group is arranged on the cutter handle. The cutter neck is connected with the lower end of the cutter handle; the diameter of the knife neck is smaller than that of the knife handle. The cutter head group comprises 2 cutter heads; 2 cutter heads are connected with the cutter neck; the 2 cutter heads are symmetrically arranged along the axial lead of the cutter handle. When the cutter head group connected with the cutter neck is provided with 2 cutter heads, the working strength of the cutter head group required to be supported by the cutter neck can be reduced, so that the volume of the cutter neck can be reduced; the 2 cutter heads are symmetrically arranged, so that the space required by the cutter heads can be further reduced; the space required by the cutter neck and the cutter head group is smaller. The position of the tool tip is now quickly located by the datum position so that the tool tip can be machined in a smaller groove.

Description

T-shaped milling cutter

Technical Field

The utility model relates to a milling cutter especially relates to a T type milling cutter.

Background

With the enhancement of the configuration and the function of the mobile phone, the space design of the side key slot of the middle frame of the mobile phone is smaller and deeper, and the depth of the side key button is deeper and deeper. In the prior art, the tool bit of a common T-shaped knife is cylindrical, and the cutting edge is arranged on the edge of the cylinder, so that the tool bit is large in area and cannot be placed into a side button to process a T-shaped groove.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a T type milling cutter can carry out T groove processing at littleer inslot.

According to the utility model discloses a T type milling cutter includes:

the cutter comprises a cutter handle, wherein a reference position for positioning the position of the cutter head group is arranged on the cutter handle.

The cutter neck is connected with the lower end of the cutter handle; the diameter of the knife neck is smaller than that of the knife handle.

The cutter head group comprises 2 cutter heads; 2 cutter heads are connected with the cutter neck; the 2 cutter heads are symmetrically arranged along the axial lead of the cutter handle.

According to the utility model discloses an above-mentioned embodiment has following beneficial effect at least: when the cutter head group connected with the cutter neck is provided with 2 cutter heads, the working strength of the cutter head group required to be supported by the cutter neck can be reduced, so that the volume of the cutter neck can be reduced; the 2 cutter heads are symmetrically arranged, so that the space required by the cutter heads can be further reduced; the space required by the cutter neck and the cutter head group is smaller. The position of the tool tip is now quickly located by the datum position so that the tool tip can be machined in a smaller groove.

According to some embodiments of the invention, the reference position comprises a first reference surface and a second reference surface perpendicular to each other, the first reference surface being perpendicular to the axis line; the cutting head comprises a cutting edge; the plane formed by 2 cutting edges is parallel to the second reference plane. Through the first reference surface and the second reference surface, the position of the lower cutter of the cutter head in the horizontal direction and the vertical direction can be determined.

According to some embodiments of the present invention, the cutting head further comprises a rake surface that is concave arcuate. The cutting edge of the cutter head can be sharper by adopting the concave cambered surface as the front cutter surface.

According to some embodiments of the invention, the tool head further comprises a main relief surface; the cutter head is a trapezoid body; the included angle between the main rear cutter face and the front cutter face is an acute angle. By providing the cutter head as a trapezoidal body, the force at the cutting edge can be increased. Simultaneously, set up the contained angle of main back knife face and rake face into the acute angle, further make the cutting edge sharper to the intensity of reinforcing tool bit.

According to some embodiments of the invention, the cutter neck and the cutter head set are integrally formed. Through with sword neck and tool bit group integrated into one piece for tool bit group is more firm, and tool bit group's intensity is bigger.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a front view of a T-shaped milling cutter according to an embodiment of the present invention;

fig. 2 is a bottom view of the T-shaped milling cutter according to the embodiment of the present invention.

Reference numerals:

a knife handle 1100,

Cutting insert 1200, cutting edge 1210, rake surface 1220, primary relief surface 1230,

A cutter neck 1300,

Reference position 1400, first reference plane 1410, second reference plane 1420, second side line 1421, first side line 1422, and,

The axial lead is 1500,

The endpoints are connected to a line 2100.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

A T-shaped milling cutter according to an embodiment of the present invention is described below with reference to fig. 1 to 2.

As shown in fig. 1, the T-shaped milling cutter includes:

the tool holder 1100 is provided with a reference position 1400 for positioning the position of the tool bit group.

The cutter neck 1300, the cutter neck 1300 is connected with the lower end of the cutter handle 1100; the diameter of the neck 1300 is smaller than the diameter of the shank 1100.

A tool tip set comprising 2 tool tips 1200; 2 cutter heads 1200 are connected to the cutter neck 1300; the 2 tool tips 1200 are symmetrically disposed along the axial centerline 1500 of the tool shank 1100.

It should be understood that the tool shank 1100 is cylindrical such that an upper end portion of the tool shank 1100 may be coupled to a spindle of a machine tool, such that a set of tool bits of a T-mill is rotationally driven by rotation of the spindle, thereby achieving the machining of a T-slot.

It should be understood that the axis 1500 coincides with the neck axis of the neck 1300. When 2 tool bits 1200 symmetry set up, 2 tool bits 1200 compare the circular tool bit among the prior art, only need flat space can, its required space of placing tool bit 1200 is littleer. The number of the tool bit 1200 of the tool bit group is reduced, so that the strength requirement of the tool neck 1300 can be reduced, the designed diameters of the tool neck 1300 and the lower end part of the tool handle 1100 can be smaller, and the placing space of the tool neck 1300 and the tool bit 1200 can be further reduced.

It should be appreciated that since reference position 1400 is fixed from cutting head 1200, the position of cutting head 1200, and thus the plunge position of cutting head 1200, can be determined from the position of reference position 1400.

Therefore, when the cutter head group connected with the cutter neck 1300 is provided with 2 cutter heads 1200, the strength of the cutter neck 1300 for supporting the cutter head group to work can be reduced, so that the volume of the cutter neck 1300 can be reduced; the 2 cutter heads are symmetrically arranged, so that the space required by the cutter head 1200 can be further reduced; the space required for the neck 1300 and the tool tip set is smaller. The position of the cutting tip 1200 is now quickly located by the datum 1400 so that the cutting tip 1200 can be machined in a smaller groove.

In some embodiments, as shown in fig. 1 and 2, reference bit 1400 includes first reference plane 1410 and second reference plane 1420 that are perpendicular to each other, first reference plane 1410 being perpendicular to axis 1500; cutting head 1200 includes a cutting edge 1210; the plane formed by the 2 cutting edges 1210 is parallel to the second datum plane 1420. The position of the lower blade of the tool bit 1200 in the horizontal and vertical directions can be determined by the first reference surface 1410 and the second reference surface 1420.

It should be appreciated that since the relative position of first datum 1410 to tool tip 1200 is fixed, the depth of tool tip 1200 in the T-slot can be determined by observing the position of first datum 1410.

It will be appreciated that since the two sides of the second reference plane 1420 are fixed in position relative to the cutting edge of the cutting head 1200, respectively, the horizontal position of the cutting edge 1210 can be determined by observing the position of the second reference plane 1420.

Thus, the lower blade position of tool tip 1200 may be determined by first datum surface 1410 and second datum surface 1420.

In some embodiments, as shown in fig. 2, in some embodiments, tool tip 1200 further comprises a rake surface 1220 having a concave arcuate surface. By making the rake surface 1220 a concave arc surface, the cutting edge of the cutter head 1200 can be made sharper.

It will be appreciated that the sharpness of the edge may be enhanced by adjusting the angle of the arc of the rake surface 1220 near the edge 1210.

In some embodiments, tool tip 1200 further includes a primary relief surface 1230; the cutter head 1200 is a trapezoidal body; the angle between the main relief surface 1230 and the rake surface 1220 is acute. By providing the cutting head 1200 as a trapezoidal body, the force at the cutting edge 1210 can be increased. Meanwhile, the included angle between the main relief surface 1230 and the rake surface 1220 is set to an acute angle, which further makes the cutting edge 1210 sharper, thereby enhancing the strength of the tool bit 1200.

It will be appreciated that the cutting head 1200 is configured as a trapezoidal body, which allows the main relief surface 1230 to be a slanted plane, thereby relieving the cutting edge 1210 from stress and increasing the strength of the cutting edge 1210.

In some embodiments, the neck 1300 and the set of bits are integrally formed. Through with sword neck 1300 and tool bit group integrated into one piece for tool bit group is more firm, and tool bit group's intensity is bigger.

It should be understood that the integral molding can be realized by the following method: the bit set is designed to be flat and then ground to form the bit set shown in fig. 2. At this time, the tool bit set and the tool neck 1300 may be integrally formed.

It should be appreciated that in some embodiments, the tool shank 1100, the tool neck 1300, and the tool tip set may be injection molded and then machined to form a T-shaped milling cutter as shown in fig. 1.

A T-shaped milling cutter implemented according to an embodiment of the present invention is described in detail below with a specific embodiment with reference to fig. 1 to 2. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention.

As shown in fig. 1, the T-shaped milling cutter includes: the tool holder 1100 is provided with a reference position 1400 for positioning the position of the tool bit group. The cutter neck 1300, the cutter neck 1300 is connected with the lower end of the cutter handle 1100; the diameter of the neck 1300 is smaller than the diameter of the shank 1100. A tool tip set comprising 2 tool tips 1200; 2 cutter heads 1200 are connected to the cutter neck 1300; the 2 tool tips 1200 are symmetrically disposed along the axial centerline 1500 of the tool shank 1100.

Specifically, the body of the neck 1300 is cylindrical and the end of the neck 1300 is funnel-shaped. The neck 1300 is cylindrical. Specifically, the axis 1500 coincides with the neck axis of the neck 1300.

Specifically, as shown in fig. 1, the reference position 1400 includes a first reference plane 1410 and a second reference plane 1420 perpendicular to each other, the first reference plane 1410 is perpendicular to the axis 1500; cutting head 1200 includes a cutting edge 1210; the plane formed by the 2 cutting edges 1210 is parallel to the second datum plane 1420. The cutting head 1200 further includes a rake surface 1220 having an inner concave arc surface. Tool tip 1200 also includes a major relief surface 1230; the cutter head 1200 is a trapezoidal body; the angle between the main relief surface 1230 and the rake surface 1220 is acute. Specifically, as shown in fig. 1, the straight lines on which the projections of the two side edges of the second reference plane 1420 are located are the first side edge 1422 and the second side edge 1421, respectively. As shown in fig. 1, the two cutting edges 1210 of the cutting head 1200 coincide with a first side line 1422 and a second side line 1421 on the same projection plane.

Specifically, the end bodies of the 2 cutting heads 1200 far away from the cutting edge 1210 are connected with each other, and the cutting neck 1300 is connected with the connecting part of the 2 cutting heads 1200. Specifically, the end point connecting line 2100 of the 2 cutting edges 1210 is perpendicular to the journal axis of the journal 1300.

Specifically, the neck 1300, handle 1100 and head set are integrally formed.

During operation, the tool holder 1100 is sleeved in a main shaft of a machine tool, the tool bit group and the tool neck 1300 are placed in a side groove of a middle frame of the mobile phone, and the tool bit group is parallel to the edge of the side groove of the middle frame. At this time, the height and the grooving angle of the blade 1210 in the middle frame side groove of the cellular phone are confirmed by the reference position. After the position of the cutting edge 1210 is determined, the spindle is started to rotate, and at this time, 2 cutting edges 1210 rotate around the axis 1500 to perform T-groove machining.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A T-shaped milling cutter, comprising:

the cutter comprises a cutter handle, wherein a reference position for positioning the position of a cutter head group is arranged on the cutter handle;

the cutter neck is connected with the lower end of the cutter handle; the diameter of the cutter neck is smaller than that of the cutter handle;

2. A T-shaped milling cutter according to claim 1,

the reference position comprises a first reference surface and a second reference surface which are perpendicular to each other, and the first reference surface is perpendicular to the shaft axis; the cutting head comprises a cutting edge; the plane formed by 2 cutting edges is parallel to the second reference plane.

3. A T-shaped milling cutter according to claim 2,

the tool bit also comprises a front tool face in an inwards concave cambered surface shape.

4. A T-shaped milling cutter according to claim 3,

the tool bit further comprises a main rear tool face; the cutter head is a trapezoid body; the included angle between the main rear cutter face and the front cutter face is an acute angle.

5. A T-shaped milling cutter according to any one of claims 1 to 4,

the knife neck and the knife head group are integrally formed.