CN215658065U - T-shaped milling cutter for machining inner hole - Google Patents
T-shaped milling cutter for machining inner hole Download PDFInfo
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- CN215658065U CN215658065U CN202121164919.6U CN202121164919U CN215658065U CN 215658065 U CN215658065 U CN 215658065U CN 202121164919 U CN202121164919 U CN 202121164919U CN 215658065 U CN215658065 U CN 215658065U
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- shaped milling
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Abstract
The utility model discloses a T-shaped milling cutter for machining an inner hole, which comprises a cutter handle, a neck and a cutting part which are sequentially connected, wherein the cutting part is provided with two circumferential blades which are sequentially arranged in the circumferential direction, chip grooves which are arranged at intervals with the circumferential blades, and a bottom blade which is connected with the circumferential blades, and the circumferential blades are provided with a cutting edge, a first rear angle surface connected with the cutting edge, a second rear angle surface connected with the first rear angle surface, a third rear angle surface connected with the second rear angle surface, and a fourth rear angle surface connected with the third rear angle surface. The utility model can extend into the irregular holes to process T positions and has high processing efficiency.
Description
Technical Field
The utility model relates to the technical field of machining cutters, in particular to a T-shaped milling cutter for machining an inner hole.
Background
With the development of science and technology, the structures of some parts are more and more complicated, wherein, when the T position of the inner hole of some parts is processed, a T-shaped milling cutter needs to extend into the inner part of the hole, and then milling processing is carried out.
However, according to the requirement of the product, some special-shaped holes, such as rectangular holes, are formed in the part, however, the common T-shaped milling cutter cannot extend into the rectangular holes to perform T-position machining.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve at least one technical problem in the prior art, and provides a T-shaped milling cutter for machining an inner hole, which can extend into an irregular hole to machine a T position and has high machining efficiency.
The utility model is realized by the following technical scheme:
the first aspect of the utility model provides a T-shaped milling cutter for machining an inner hole, which comprises a cutter handle, a neck and a cutting part which are sequentially connected, wherein the cutting part is provided with two circumferential blades which are sequentially arranged in the circumferential direction, chip grooves which are arranged at intervals with the circumferential blades, and a bottom blade which is connected with the circumferential blades, and the circumferential blades are provided with a blade, a first rear angle surface connected with the blade, a second rear angle surface connected with the first rear angle surface, a third rear angle surface connected with the second rear angle surface, and a fourth rear angle surface connected with the third rear angle surface.
The T-shaped milling cutter for machining the inner hole at least has the following beneficial effects: the circumferential blade has a first rear corner face, a second rear corner face, a third rear corner face and a fourth rear corner face which are connected in sequence, so that the width of the circumferential blade is reduced, and thus, the T-shaped milling cutter is irregular in shape and can extend into a special-shaped hole with a part and then be milled.
Meanwhile, the widths of the first cutting edge and the second cutting edge are reduced, and accordingly, the material of the T-shaped milling cutter is reduced, but the T-shaped milling cutter can be ensured to have better rigidity due to the arrangement of the rear corner surfaces of the T-shaped milling cutter, so that the T-shaped milling cutter can adapt to a faster cutting speed, and the service life of the T-shaped milling cutter is prolonged.
According to the T-shaped milling cutter for machining an inner hole of the first aspect of the present invention, the first rear corner surface, the second rear corner surface, the third rear corner surface, and the fourth rear corner surface have respective rear angles of 12 °, 35 °, 75 °, and 98 °.
The arrangement of the plurality of relief surfaces reduces the width of the first cutting edge and the second cutting edge of the T-shaped milling cutter, so that the T-shaped milling cutter is irregular in shape and can extend into a special-shaped hole with a part and then be subjected to milling.
Meanwhile, the widths of the first cutting edge and the second cutting edge are reduced, so that the material of the T-shaped milling cutter is reduced, but the T-shaped milling cutter can be ensured to have better rigidity due to the arrangement of a plurality of rear angle surfaces of the T-shaped milling cutter.
According to the T-shaped milling cutter for machining the inner hole, the circumferential edge is further provided with a circumferential edge rake angle, and the angle of the circumferential edge rake angle is 16-20 degrees.
The parameter setting of circumference sword anterior angle can prevent that the sword is rolled up and the tipping from appearing in the circumference sword, guarantees the efficient milling process of T type milling cutter.
According to the T-shaped milling cutter for machining the inner hole, the helical angle of the circumferential edge is 25-30 degrees.
The helical angle of the circumferential edge is small, so that the T-shaped milling cutter has good rigidity, the occurrence of tipping of the circumferential edge is prevented, and the service life of the T-shaped milling cutter is prolonged.
According to the T-shaped milling cutter for machining the inner hole, the bottom edge (150) is provided with a bottom edge front angle and a bottom edge back angle, the angle of the bottom edge front angle is 10 degrees, and the angle of the bottom edge back angle is 10 degrees.
The parameters of the angles of the front angle and the rear angle of the bottom edge are set, so that the T-shaped milling cutter is prevented from being damaged in the milling process.
According to the T-shaped milling cutter for machining the inner hole, the neck is provided with the first cylindrical section, the first conical section and the second cylindrical section which are sequentially connected, one end, far away from the first conical section, of the first cylindrical section is connected with the end face of the cutting part, and the diameter of the first conical section is gradually reduced along the direction of the cutting part.
The first conical section enables the diameter of the neck to be gradually reduced from the second cylindrical section to the first cylindrical section, and when the T-shaped milling cutter extends into the special-shaped hole, the diameter of the neck is smaller than the minimum width of the special-shaped hole, so that the T-shaped milling cutter is ensured to have enough length to extend into a milling position.
According to the T-shaped milling cutter for machining the inner hole, the cutter handle is provided with the second conical section, and the second conical section is connected with one end, far away from the first conical section, of the second cylindrical section.
The diameter from the tool handle to the neck part is gradually reduced by the second conical section, the structure and the volume of the T-shaped milling cutter can be simplified, and meanwhile, the rigidity of the neck part during milling is also ensured.
According to the T-shaped milling cutter for machining the inner hole, the cutter handle, the neck part and the cutting part are of an integrated structure.
Through milling cutter formula structure setting as an organic whole, be favorable to improving milling cutter's bulk strength.
Drawings
The utility model is further described below with reference to the accompanying drawings and examples;
FIG. 1 is a schematic front view of an embodiment of the present invention;
fig. 2 is a left side view of the structure of fig. 1.
Reference numerals: 100-handle, 110-neck, 120-cutting part, 130-chip groove, 140-circumferential edge, 150-bottom edge, 200-first back angle surface, 210-second back angle surface, 220-third back angle surface, 230-fourth back angle surface, 240-first conical section, 250-second conical section and 260-blade.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, 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.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. 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 otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 and 2, a T-shaped milling cutter for machining an inner hole includes a shank 100, a neck 110, and a cutting part 120, which are sequentially connected.
In detail, the cutting part 120 includes two circumferential blades 140 arranged in sequence in the circumferential direction, flutes 130 spaced apart from the circumferential blades 140, and a bottom blade connected to the circumferential blades 140, and the circumferential blades 140 include a blade 260, a first back corner surface 200 connected to the blade 260, a second back corner surface 210 connected to the first back corner surface 200, a third back corner surface 220 connected to the second back corner surface 210, and a fourth back corner surface 230 connected to the third back corner surface 220.
The circumferential edge 140 has a first rear corner face 200, a second rear corner face 210, a third rear corner face 220, and a fourth rear corner face 230 connected in this order, so that the width of the circumferential edge 140 is reduced, and thus, the shape of the T-shaped milling cutter is irregular and can be inserted into a hole having a profile shape of a part and then subjected to milling.
Meanwhile, the widths of the first cutting edge and the second cutting edge are reduced, so that the material of the T-shaped milling cutter is reduced, but the T-shaped milling cutter has better rigidity due to the arrangement of a plurality of rear corner surfaces of the T-shaped milling cutter, so that the T-shaped milling cutter can adapt to higher cutting speed, and the service life of the milling cutter is prolonged.
In some embodiments of the present invention, the neck 110 is provided with a first cylindrical section, a first conical section 240 and a second cylindrical section, which are connected in sequence, and one end of the first cylindrical section, which is far away from the first conical section 240, is connected with the end surface of the cutting portion 120.
The first conical section 240 causes the neck 110 to become smaller in diameter from the second cylindrical section to the first cylindrical section, and when the T-mill is extended into the shaped hole, the diameter of the neck 110 is smaller than the minimum width of the shaped hole, ensuring that the T-mill has sufficient length to extend into the milling position.
In some embodiments of the present invention, the tool shank 100 is provided with a second conical section 250, the second conical section 250 is connected to an end of the second cylindrical section away from the first conical section 240, and the diameter of the first conical section 240 is tapered along the cutting portion 120.
The diameter from the tool shank 100 to the neck 110 is gradually reduced by the second conical section 250, so that the structure and the volume of the T-shaped milling tool can be simplified, and meanwhile, the rigidity of the neck 110 during milling is also ensured.
In some embodiments of the present invention, the first rear corner surface 200, the second rear corner surface 210, the third rear corner surface 220, and the fourth rear corner surface 230 have rear angles of 12 °, 35 °, 75 °, and 98 °, respectively.
The arrangement of the plurality of relief surfaces reduces the width of the first cutting edge and the second cutting edge of the T-shaped milling cutter, so that the T-shaped milling cutter is irregular in shape and can extend into a special-shaped hole with a part and then be subjected to milling.
Meanwhile, the widths of the first cutting edge and the second cutting edge are reduced, so that the material of the T-shaped milling cutter is reduced, but the T-shaped milling cutter can be ensured to have better rigidity due to the arrangement of a plurality of rear angle surfaces of the T-shaped milling cutter.
In some embodiments of the utility model, the circumferential edge 140 is further provided with a circumferential edge rake angle, the angle of the circumferential edge rake angle being 16 ° to 20 °.
The setting of the parameters of the front angle of the circumferential edge 140 can prevent the circumferential edge 140 from generating rolling edges and tipping edges, and ensure the efficient milling processing of the T-shaped milling cutter.
In some embodiments of the utility model, the circumferential edge 140 has a helix angle of 25 ° to 30 °.
The helical angle of the circumferential edge 140 is small, so that the T-shaped milling cutter has good rigidity, and the occurrence of edge chipping of the circumferential edge 140 is prevented, thereby providing the service life of the T-shaped milling cutter.
In some embodiments of the present invention, the bottom edge 150 is provided with a bottom edge rake angle having an angle of 10 ° and a bottom edge relief angle having an angle of 10 °.
The parameters of the angles of the front angle and the rear angle of the bottom edge are set, so that the T-shaped milling cutter is prevented from being damaged in the milling process.
According to the T-shaped milling cutter for machining the inner hole, the cutter handle, the neck part and the cutting part are of an integrated structure.
Through milling cutter formula structure setting as an organic whole, be favorable to improving milling cutter's bulk strength.
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 (8)
1. The utility model provides a T type milling cutter of processing hole, its characterized in that, is including handle of a knife (100), neck (110) and the cutting portion (120) that connect gradually, cutting portion (120) have two circumference sword (140) that circumference was arranged in proper order, with chip groove (130) that circumference sword (140) interval set up, with the end sword that circumference sword (140) are connected, circumference sword (140) are provided with cutting edge (260), connect first back angle face (200), the connection of cutting edge (260) second back angle face (210), the connection of first back angle face (200) third back angle face (220), the connection of second back angle face (210) fourth back angle face (230) of third back angle face (220).
2. The T-shaped milling cutter for machining inner bores according to claim 1, characterized in that the first rear corner face (200), the second rear corner face (210), the third rear corner face (220) and the fourth rear corner face (230) have rear angles of 12 °, 35 °, 75 ° and 98 °, respectively.
3. The T-mill for machining inner bores as claimed in claim 1, wherein the circumferential edge (140) is further provided with a circumferential edge rake angle, the angle of which is 16 ° to 20 °.
4. The T-mill for machining inner bores as claimed in claim 1, wherein the helix angle of the circumferential edge (140) is 25 ° to 30 °.
5. The T-shaped milling cutter for machining inner holes as set forth in claim 1, wherein the bottom edge (150) is provided with a bottom edge rake angle having an angle of 10 ° and a bottom edge relief angle having an angle of 10 °.
6. The T-shaped milling cutter for machining the inner hole is characterized in that the neck portion (110) is provided with a first cylindrical section, a first conical section (240) and a second cylindrical section which are connected in sequence, one end, far away from the first conical section (240), of the first cylindrical section is connected with the end face of the cutting portion (120), and the diameter of the first conical section (240) is gradually reduced along the direction of the cutting portion (120).
7. The T-shaped milling cutter for machining the inner hole is characterized in that one end of the cutter handle (100) is provided with a second conical section (250), and the second conical section (250) is connected with one end, away from the first conical section (240), of the second cylindrical section.
8. The T-shaped milling cutter for machining inner holes as set forth in claim 2, characterized in that the shank (100), the neck (110) and the cutting portion (120) are of a one-piece construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121164919.6U CN215658065U (en) | 2021-05-27 | 2021-05-27 | T-shaped milling cutter for machining inner hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121164919.6U CN215658065U (en) | 2021-05-27 | 2021-05-27 | T-shaped milling cutter for machining inner hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215658065U true CN215658065U (en) | 2022-01-28 |
Family
ID=79973172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121164919.6U Active CN215658065U (en) | 2021-05-27 | 2021-05-27 | T-shaped milling cutter for machining inner hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215658065U (en) |
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2021
- 2021-05-27 CN CN202121164919.6U patent/CN215658065U/en active Active
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| GR01 | Patent grant | ||
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Address after: 529000 1st floor, building 1, 115 Longxi Road, Jianghai District, Jiangmen City, Guangdong Province Patentee after: Jiangmen Zhongdao Wentu Precision Technology Co.,Ltd. Address before: 529000 No. 115, Longxi Road, high tech Development Zone, Jianghai District, Jiangmen City, Guangdong Province Patentee before: JIANGMEN ZHONGDAO PRECISION TECHNOLOGY Co.,Ltd. |