CN201728409U

CN201728409U - Lengthened face mill

Info

Publication number: CN201728409U
Application number: CN2010202731615U
Authority: CN
Inventors: 梁峰
Original assignee: Beijing Nankou Railway Transit Machinery Co Ltd
Current assignee: Beijing Zhongche Nankow Machinery Co Ltd
Priority date: 2010-07-23
Filing date: 2010-07-23
Publication date: 2011-02-02
Anticipated expiration: 2020-07-23

Abstract

The utility model provides a lengthened face mill, which comprises a steel cutter bar, a steel cutter head and a basic hilt. Two ends of the steel cutter bar are respectively provided with a long projection and a short projection, a mount is arranged at the root of the long projection, an internal tangent bevel is arranged on one side of the long projection from top to root, at least two threaded holes are arranged on one side of the basic hilt, the basic hilt is sleeved on the mount of the long projection, the inner wall of the basic hilt and the internal tangent bevel form a cavity, the two threaded holes are communicated to the cavity respectively, and two mounting screws are respectively screwed with the two threaded holes to be abutted upon the internal tangent bevel, so that the basic hilt is in bolting joint with the long projection of the steel cutter bar. Besides, the steel cutter head is sleeved on the short projection and in bolting joint with the short projection, and the steel cutter head is provided with a cutting blade. The integral length of the mill is lengthened while integral strength of the mill is guaranteed, thereby bringing convenience to process bottom faces of inner-bore cavities.

Description

Lengthened end milling cutter

Technical Field

The utility model relates to a machining technique especially relates to an extension end mill for milling hole die cavity bottom terminal surface.

Background

In the prior art, the numerical control machine tool has high machining precision, so the numerical control machine tool is widely applied.

However, in the standard tool of the numerical control machine tool, a milling cutter capable of milling the bottom end face of the inner hole cavity of some box and cavity parts (for example, the bottom end face of the inner hole cavity with the diameter of 226mm and the depth of 452 mm) is not available.

SUMMERY OF THE UTILITY MODEL

The utility model provides an extension end mill for process inner hole type chamber bottom terminal surface.

The utility model provides an extended end milling cutter, which comprises a steel cutter bar, a steel cutter head and a basic cutter handle;

the two ends of the steel cutter bar are respectively provided with a long bulge and a short bulge, the root of the long bulge is provided with an installation platform, and one side of the long bulge is provided with an inner tangent inclined plane from the top to the root; at least two threaded holes are formed in one side of the basic tool handle, the basic tool handle is sleeved on the mounting table of the long protrusion, a cavity is formed by the inner wall of the basic tool handle and the internally tangent inclined plane, and the two threaded holes are respectively communicated with the cavity; the two mounting bolts are respectively in threaded connection with the two threaded holes to abut against the inner tangent inclined plane, so that the basic tool shank is bolted with the long protrusion of the steel tool bar; the steel cutter head is sleeved on the short protrusions and bolted with the short protrusions, and blades are arranged on the steel cutter head.

The basic knife handle is of a cone structure, the cone structure comprises a cone and a base, and the base is arranged at the bottom of the cone; and the at least two threaded holes are arranged on the side wall of the cone side by side, the base is sleeved on the long raised mounting table, and the inner wall of the cone and the inner tangent inclined plane form a cavity.

The cross section of the basic knife handle is of a cross solid structure. The blade is a diamond-shaped blade. The tool nose of the rhombic blade is 60-80 degrees. The tool nose of the rhombic blade is an arc with the radius of 0.3-1.2 mm. The thickness of the rhombic blade is 4-6 mm. The cross section of the steel cutter bar body is of a cross solid structure. The total length of the basic tool handle and the steel tool bar is 448 mm.

The utility model discloses an extended end mill, locate on the bellied mount table of length by basic handle of a knife cover, the inner wall of basic handle of a knife constitutes a cavity with the interior tangent inclined plane of the bellied one side of length, basic handle of a knife and the long protruding bolt of steel cutter arbor, and the total length of basic handle of a knife and steel cutter arbor is 448 mm's relevant structure; when the whole length of extension milling cutter, guaranteed its holistic intensity, realized the purpose of being convenient for to process to inner hole type chamber bottom end face, just the utility model discloses an extension end milling cutter has with low costs, processing manufacturing is simple advantage in addition.

Drawings

FIG. 1 is a schematic structural view of the lengthened end mill of the present invention;

FIG. 2 is a schematic structural view of a steel cutter head of the present invention;

FIG. 3 is a schematic structural view of the steel cutter bar of the present invention;

fig. 4 is a schematic view in the direction of a-a in fig. 3.

Detailed Description

Fig. 1 is a schematic structural view of the lengthened end mill of the present invention. Fig. 2 is a schematic structural diagram of the steel cutter head of the present invention. Fig. 3 is a schematic structural diagram of the steel cutter bar of the present invention. Fig. 4 is a schematic view in the direction of a-a in fig. 3. Referring to fig. 1 to 4, the elongated end mill of the present embodiment includes a steel tool bar 101, a steel cutter head 102, and a basic tool shank 103; wherein,

the steel cutter bar 101 can be made of 45# steel or forged piece as raw material, in order to reduce the overall weight of the lengthened end mill, the rod body can be processed into a cross solid structure (as shown in fig. 4), and both ends of the steel cutter bar 101 are respectively provided with a long protrusion and a short protrusion; the root of the long protrusion is provided with a mounting table 1011; an internally tangent inclined plane 1012 is arranged from the top to the root of the long protrusion on one side of the long protrusion, and an internally threaded hole is arranged at the short protrusion;

the basic knife handle 103 is a cone structure, the cone structure comprises a cone 1031 and a base 1032, the base 1032 is arranged at the bottom of the cone 1031, at least two threaded holes are arranged on the side wall of the base 1032 side by side, when the base 1032 is sleeved on the long raised mounting table 1011, a cavity is formed by the inner wall of the base 1032 and the internally tangent inclined plane 1012, and the two threaded holes are respectively communicated with the cavity; furthermore, the top of the cone 1031 is provided with a blind rivet structure so that the lengthened end mill can be hinged in a related structure of a numerical control machine tool;

the two threaded holes can be used for enabling the long protrusions of the basic tool shank 103 and the steel tool bar 101 to be clamped in a side fixing mode in a bolting mode through two mounting bolts, and the two mounting bolts respectively abut against the internally tangent inclined plane 1012; in the working process of the lengthened end mill in the embodiment, the steel cutter bar 101 and the basic cutter handle 103 are prevented from being separated by the mutual friction force between the two mounting bolts and the internally tangent inclined plane 1012, so that the self-locking property between the steel cutter bar 101 and the basic cutter handle 103 is realized, and the overall strength of the basic cutter handle and the steel cutter bar is ensured; furthermore, the total length of the basic tool handle 103 and the steel tool bar 101 is 448 mm;

the steel cutter head 102 can also be made of 45# steel or a forged piece as a raw material, a disc at one end of the steel cutter head 102 is provided with a blade 104, the blade 104 can be a rhombic blade with the thickness of 4-6 mm, a hard alloy material such as YG8 or YG6 can be welded at a blade tip, the blade tip is 60-80 degrees, and the blade tip is an arc with the radius of 0.3-1.2 mm; the other end of the steel cutter head 102 is fitted over a short projection of the steel cutter bar 101 and bolted thereto by bolts 105.

The lengthened end milling cutter of the embodiment is a related structure, wherein a basic cutter handle is sleeved on a mounting table of a long protrusion, the inner wall of the basic cutter handle and an inner tangent inclined plane on one side of the long protrusion form a cavity, the basic cutter handle is bolted with the long protrusion of a steel cutter bar, and the total length of the basic cutter handle and the steel cutter bar is 448 mm; when the whole length of extension milling cutter, guaranteed its holistic intensity, realized the purpose of being convenient for to process to inner hole type chamber bottom end face, just the utility model discloses an extension end milling cutter has with low costs, processing manufacturing is simple advantage in addition.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A lengthened end mill is characterized by comprising a steel cutter bar, a steel cutter head and a basic cutter handle;

the two ends of the steel cutter bar are respectively provided with a long bulge and a short bulge, the root of the long bulge is provided with an installation platform, and one side of the long bulge is provided with an inner tangent inclined plane from the top to the root;

at least two threaded holes are formed in one side of the basic tool handle, the basic tool handle is sleeved on the mounting table of the long protrusion, a cavity is formed by the inner wall of the basic tool handle and the internally tangent inclined plane, and the two threaded holes are respectively communicated with the cavity; the two mounting bolts are respectively in threaded connection with the two threaded holes to abut against the inner tangent inclined plane, so that the basic tool shank is bolted with the long protrusion of the steel tool bar;

the steel cutter head is sleeved on the short protrusions and bolted with the short protrusions, and blades are arranged on the steel cutter head.

2. The elongated end mill according to claim 1, wherein the base shank is a cone structure, the cone structure including a cone and a base, the base being disposed at a bottom of the cone; and the at least two threaded holes are arranged on the side wall of the base side by side, the base is sleeved on the long raised mounting table, and the inner wall of the base and the inner tangent inclined plane form a cavity.

3. The elongated end mill of claim 1 wherein the cross-section of the base shank is a cross solid construction.

4. The elongated end mill according to claim 1, wherein the inserts are diamond shaped inserts.

5. The elongated end mill according to claim 4, wherein the tip of the diamond-shaped insert is 60 to 80 degrees.

6. The elongated end mill according to claim 4, wherein the nose of the diamond-shaped insert is a circular arc having a radius of 0.3 to 1.2 mm.

7. The elongated end mill according to claim 4, wherein the diamond shaped inserts have a thickness of 4 to 6 mm.

8. The elongated end mill according to claim 1, wherein the steel shank body is cross-sectionally of a solid cross-section.

9. The elongated end mill according to claim 1, characterized in that the total length of the base shank and the steel shank is 448 mm.