CN111570882A - Self-centering clamping structure of large-diameter cutter - Google Patents
Self-centering clamping structure of large-diameter cutter Download PDFInfo
- Publication number
- CN111570882A CN111570882A CN202010478276.6A CN202010478276A CN111570882A CN 111570882 A CN111570882 A CN 111570882A CN 202010478276 A CN202010478276 A CN 202010478276A CN 111570882 A CN111570882 A CN 111570882A
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- China
- Prior art keywords
- conical
- hole
- milling cutter
- tensioning sleeve
- cutter head
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/02—Connections between the shanks and detachable cutting heads
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The invention provides a self-centering clamping structure of a large-diameter cutter, which comprises: the lower end face of the milling cutter head is contacted with the upper end face of the universal cutter handle; the universal cutter handle is coaxial with the milling cutter head; a through center hole is formed in the milling cutter head and consists of a cylindrical hole and a conical hole, a conical gap is formed between the conical hole and a cylindrical boss on the universal cutter handle, a conical tensioning sleeve is arranged in the conical gap, and a through hole is formed in the conical tensioning sleeve; the outer surface of the conical tensioning sleeve is tightly attached to the inner surface of the conical hole and is in gapless fit connection; the inner surface of the through hole is tightly attached to the outer surface of the cylindrical boss and is in gapless fit connection; the top of the conical tensioning sleeve is provided with a gasket, the gasket is connected with a bolt, and the bolt is screwed into the cylindrical boss. The milling cutter head and the universal cutter handle can be matched in a self-centering mode, the center and the end face are positioned by the conical tensioning sleeve, and strict coaxiality between the milling cutter head and the universal cutter handle can be realized under the condition that the structure of the traditional cutter handle is not changed.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a self-centering clamping structure of a large-diameter cutter.
Background
The mounting mode between the existing large-diameter milling cutter and the universal cutter handle is as follows: the positioning is carried out by adopting a straight hole, an end face and a limiting block, and the clamping is carried out by adopting a bolt.
The straight hole has the function of limiting the translational freedom degrees of the milling cutter along the X axis and the Y axis, namely determining the central position of the milling cutter; the end face has the function of limiting the translational freedom degree of the milling cutter along the Z axis and the rotational freedom degree of the milling cutter around the X axis and the Y axis; the limiting block is used for limiting the rotation freedom degree of the milling cutter around the Z axis. And bolts are adopted for clamping to ensure that the positioning relation is kept unchanged.
The center position of the milling cutter is determined by a straight hole between the existing large-diameter milling cutter and the universal cutter handle. In order to facilitate the disassembly and assembly of the milling cutter and simultaneously consider possible errors in the actual manufacturing of the milling cutter, the hole shaft between the milling cutter and the universal cutter handle is matched by clearance fit. This results in incomplete concentricity between the milling cutter and the shank, limiting the use of such cutters to rough machining of parts in general.
Disclosure of Invention
According to the existing large-diameter milling cutter and the universal cutter handle, the center position of the milling cutter is determined through the straight hole, so that the milling cutter is convenient to disassemble and assemble, and errors possibly existing in the actual manufacturing process of the milling cutter are considered, the hole shaft between the milling cutter and the universal cutter handle is matched with the hole shaft in a clearance fit mode, the milling cutter and the cutter handle are not completely coaxial, the technical problem that the cutter can only be used for rough machining of parts is limited, and the self-centering clamping structure of the large-diameter cutter is provided. The milling cutter mainly utilizes the conical tensioning sleeve to realize double positioning of the center and the end face, and can realize strict coaxiality between the milling cutter head and the cutter handle under the condition of not changing the structure of the traditional cutter handle; the processing precision of the milling cutter is improved and the application scene of the cutter is enlarged by a simple, convenient and effective mode, so that the milling cutter can be applied to the fine processing of parts.
The technical means adopted by the invention are as follows:
a large diameter tool self-centering clamping structure comprising: the milling cutter comprises a general cutter handle and a milling cutter head, wherein the milling cutter head is arranged above the general cutter handle, and the lower end surface of the milling cutter head is in contact connection with the upper end surface of the general cutter handle; the universal cutter handle is coaxial with the milling cutter head;
a through center hole is formed in the milling cutter head, the center hole is a tapered stepped hole and consists of a cylindrical hole and a conical hole, a cylindrical boss is arranged on the upper end face of the universal cutter handle and inserted into the conical hole, a conical gap is formed between the conical hole and the cylindrical boss, a conical tensioning sleeve is arranged in the conical gap, and a through hole is formed in the conical tensioning sleeve; the outer surface of the conical tensioning sleeve is closely connected with the inner surface of the conical hole in a gapless fit manner; the inner surface of the through hole is closely connected with the outer surface of the cylindrical boss in a gapless fit manner;
the top of the conical tensioning sleeve is provided with a gasket positioned in the cylindrical hole, the gasket is connected with a bolt, and the bolt is screwed into the cylindrical boss to lock and connect the universal cutter handle and the milling cutter head.
Further, the tapered hole, the tapered tensioning sleeve and the cylindrical boss are coaxial.
Furthermore, the outer diameter of the conical tensioning sleeve is gradually reduced from top to bottom, the outer diameter of the top is larger than that of the bottom, the outer surface of the conical tensioning sleeve is in contact with the conical hole of the milling cutter head, and the inner surface of the conical tensioning sleeve is in contact with the cylindrical boss of the universal cutter handle; the bottom of the milling cutter head is closely connected with the upper end face of the universal cutter handle in a gapless fit mode.
Compared with the prior art, the invention has the following advantages:
1. the self-centering clamping structure for the large-diameter cutter provided by the invention realizes self-centering matching of the milling cutter head and the universal cutter handle, the milling cutter central hole is a tapered hole, and the center and end face double positioning is realized by adopting the tapered tensioning sleeve, so that the cutter is more reliably clamped, and the milling cutter head and the cutter handle can be strictly coaxial under the condition of not changing the structure of the traditional cutter handle.
2. The self-centering clamping structure for the large-diameter cutter improves the machining precision and the installation precision of the milling cutter in a simple, convenient and effective mode, enlarges the application scene of the cutter and can be applied to the finish machining of parts.
In summary, the technical scheme of the invention can solve the problem that the center position of the milling cutter is determined by the straight hole between the existing large-diameter milling cutter and the universal cutter handle in the prior art, the hole shaft between the milling cutter and the universal cutter handle is in clearance fit in order to facilitate the disassembly and assembly of the milling cutter and also consider possible errors in the practical manufacture of the milling cutter, so that the milling cutter and the universal cutter handle are not completely coaxial, and the problem that the cutter can only be used for rough machining of parts is limited.
For the reasons, the invention can be widely popularized in the fields of machining and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an exploded view of the self-centering milling cutter of the present invention.
Fig. 3 is a cross-sectional view of the self-centering milling cutter of the present invention.
In the figure: 1. a universal knife handle; 2. a milling cutter head; 3. a conical tensioning sleeve; 4. a gasket; 5. and (4) bolts.
Detailed Description
As shown in fig. 1-3, the present invention provides a self-centering clamping structure for a large-diameter tool, comprising: the milling cutter comprises a general cutter handle 1 and a milling cutter head 2, wherein the milling cutter head 2 is arranged above the general cutter handle 1, and the lower end surface of the milling cutter head 2 is closely connected with the upper end surface of the general cutter handle 1; the universal tool shank 1 is coaxial with the milling cutter head 2.
A through center hole is formed in the middle axis of the milling cutter head 2, the center hole is a tapered stepped hole and is composed of a cylindrical hole and a conical hole, the cylindrical hole is located above the conical hole, the inner diameter of the cylindrical hole is larger than that of the conical hole, a cylindrical boss is arranged on the upper end face of the universal cutter handle 1 and is inserted into the conical hole, a conical gap is formed between the conical hole and the cylindrical boss, a conical tensioning sleeve 3 is arranged in the conical gap, and a through hole is formed in the middle axis of the conical tensioning sleeve 3; the outer surface of the conical tensioning sleeve 3 is tightly attached to the inner surface of the conical hole and is in gapless fit connection; the inner surface of the through hole is closely connected with the outer surface of the cylindrical boss in a gapless fit manner.
The top of the conical tensioning sleeve 3 is provided with a gasket 4 positioned in the cylindrical hole, the gasket 4 is connected with a bolt 5, the bolt 5 penetrates through the gasket 4 and is screwed into the cylindrical boss, and the universal cutter handle 1 is in locking connection with the milling cutter head 2.
The conical hole, the conical tensioning sleeve 3 and the cylindrical boss are coaxial.
The outer diameter of the conical tensioning sleeve 3 is gradually reduced from top to bottom, the outer diameter of the top is larger than that of the bottom, the outer surface of the conical tensioning sleeve 3 is in contact with the conical hole of the milling cutter head 2, and the inner surface of the conical tensioning sleeve is in contact with the cylindrical boss of the universal cutter handle 1; the bottom of the milling cutter head 2 is closely connected with the upper end face of the universal cutter handle 1 in a gapless fit mode.
The center hole of the milling cutter head 2 is provided with a taper hole which is indirectly matched with the universal cutter handle 1 through the taper tensioning sleeve 3. After the bolt 5 is screwed, the inner wall of the conical expansion sleeve 3 is tightly attached to the universal tool shank 1, and the outer wall of the conical expansion sleeve is tightly attached to the milling cutter head 2, so that no gap exists among the milling cutter head 2, the conical expansion sleeve 3 and the universal tool shank 1 in the X-axis direction and the Y-axis direction, and the coaxiality between the milling cutter head 2 and the universal tool shank 1 can be guaranteed.
During the use, at first install milling cutter tool bit 2 on general handle of a knife 1, then with the toper tight cover 3 of rising install in the toper clearance between milling cutter tool bit 2 and general handle of a knife 1 in order to eliminate the clearance between milling cutter tool bit 2 and the general handle of a knife 1, install bolt 5 on general handle of a knife 1 and compress tightly toper tight cover 3 that rises through gasket 4 at last to guarantee that the mounting relation is reliable and stable.
According to the invention, the conical tensioning sleeve 3 is additionally arranged, so that the top surface is compacted, and meanwhile, the center and the end surface are positioned, so that the tool is clamped more reliably.
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 the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (3)
1. The utility model provides a major diameter cutter is from centering clamping structure which characterized in that includes: the milling cutter comprises a general cutter handle (1) and a milling cutter head (2), wherein the milling cutter head (2) is arranged above the general cutter handle (1), and the lower end surface of the milling cutter head (2) is in contact connection with the upper end surface of the general cutter handle (1); the universal cutter handle (1) is coaxial with the milling cutter head (2);
a through center hole is formed in the milling cutter head (2), the center hole is a tapered stepped hole and consists of a cylindrical hole and a conical hole, a cylindrical boss is arranged on the upper end face of the universal cutter handle (1), the cylindrical boss is inserted into the conical hole, a conical gap is formed between the conical hole and the cylindrical boss, a conical tensioning sleeve (3) is arranged in the conical gap, and a through hole is formed in the conical tensioning sleeve (3); the outer surface of the conical tensioning sleeve (3) is tightly attached to the inner surface of the conical hole and is in gapless fit connection; the inner surface of the through hole is closely connected with the outer surface of the cylindrical boss in a gapless fit manner;
the top of the conical tensioning sleeve (3) is provided with a gasket (4) located in the cylindrical hole, the gasket (4) is connected with a bolt (5), the bolt (5) is screwed into the cylindrical boss, and the universal cutter handle (1) is in locking connection with the milling cutter head (2).
2. The self-centering clamping structure for the large-diameter cutter according to claim 1, wherein the tapered hole, the tapered tensioning sleeve (3) and the cylindrical boss are coaxial.
3. The self-centering clamping structure for the large-diameter cutter according to claim 1 or 2, wherein the outer diameter of the conical tensioning sleeve (3) is gradually reduced from top to bottom, the outer diameter of the top is larger than that of the bottom, the outer surface of the conical tensioning sleeve (3) is in contact with the conical hole of the milling cutter head (2), and the inner surface of the conical tensioning sleeve is in contact with the cylindrical boss of the universal cutter holder (1); the bottom of the milling cutter head (2) is closely connected with the upper end face of the universal cutter handle (1) in a gapless fit mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010478276.6A CN111570882A (en) | 2020-05-29 | 2020-05-29 | Self-centering clamping structure of large-diameter cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010478276.6A CN111570882A (en) | 2020-05-29 | 2020-05-29 | Self-centering clamping structure of large-diameter cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111570882A true CN111570882A (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010478276.6A Pending CN111570882A (en) | 2020-05-29 | 2020-05-29 | Self-centering clamping structure of large-diameter cutter |
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| CN (1) | CN111570882A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414124A (en) * | 2022-01-19 | 2022-04-29 | 航天精工股份有限公司 | Tool and method for testing locking torque of threaded self-plugging rivet |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080185792A1 (en) * | 2004-08-09 | 2008-08-07 | Sebastien Hopfner | Mandrel for a Milling Cutter |
| JP2013198967A (en) * | 2012-03-26 | 2013-10-03 | Mitsubishi Materials Corp | Clamp mechanism of cutting member, and cutting edge replacing type cutting tool using the same |
| CN105014135A (en) * | 2014-04-22 | 2015-11-04 | 庄增信 | Milling machine cutter bar device with cutter clamping part capable of being rapidly replaced |
| CN108202148A (en) * | 2016-12-16 | 2018-06-26 | 安徽盛唐泵阀制造有限公司 | The processing method of magnetic driver bearing support |
-
2020
- 2020-05-29 CN CN202010478276.6A patent/CN111570882A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080185792A1 (en) * | 2004-08-09 | 2008-08-07 | Sebastien Hopfner | Mandrel for a Milling Cutter |
| JP2013198967A (en) * | 2012-03-26 | 2013-10-03 | Mitsubishi Materials Corp | Clamp mechanism of cutting member, and cutting edge replacing type cutting tool using the same |
| CN105014135A (en) * | 2014-04-22 | 2015-11-04 | 庄增信 | Milling machine cutter bar device with cutter clamping part capable of being rapidly replaced |
| CN108202148A (en) * | 2016-12-16 | 2018-06-26 | 安徽盛唐泵阀制造有限公司 | The processing method of magnetic driver bearing support |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414124A (en) * | 2022-01-19 | 2022-04-29 | 航天精工股份有限公司 | Tool and method for testing locking torque of threaded self-plugging rivet |
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Application publication date: 20200825 |