CN113547138A - Positioning connection structure, cutter assembly, cutter head and cutter rod - Google Patents
Positioning connection structure, cutter assembly, cutter head and cutter rod Download PDFInfo
- Publication number
- CN113547138A CN113547138A CN202110799274.1A CN202110799274A CN113547138A CN 113547138 A CN113547138 A CN 113547138A CN 202110799274 A CN202110799274 A CN 202110799274A CN 113547138 A CN113547138 A CN 113547138A
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- arc surfaces
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- inner arc
- circle
- connecting shaft
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- 238000004519 manufacturing process Methods 0.000 description 8
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The application provides a location connection structure and cutter unit spare and cutter head and cutter arbor, location connection structure, including part one and part two, part one include a connecting axle, part two be equipped with a connecting hole, the connecting axle can insert to the connecting hole in, the lateral wall of connecting axle include a plurality of interior arc surfaces, the inner wall of connecting hole include a plurality of outer arc surfaces, the connecting axle can be relative the connecting hole rotatory to a plurality of interior arc surfaces respectively with the tangent position of a plurality of outer arc surfaces, and can prevent the connecting axle relative the connecting hole around the further rotation of same direction. The positioning connection structure provided by the invention realizes high-precision connection between parts during assembly, can realize zero clearance and zero error of the parts, is convenient and quick, and is especially suitable for high-precision connection between long parts.
Description
Technical Field
The invention relates to the field of mechanical connection, in particular to a positioning connection structure, a cutter assembly, a cutter head and a cutter rod.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
In the prior art, the matching mode of the connecting shaft and the connecting hole is mostly in shaft hole clearance fit, and no matter how precise shaft holes are matched, due to the problem of tolerance, the matching is in clearance, and zero-clearance and zero-error matching cannot be realized. In addition, the positioning conical surface matching is adopted, and the matching mode has high requirements on the manufacturing precision of the part connecting part and high production cost.
It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the invention.
Disclosure of Invention
The invention aims to provide a positioning connection structure, a cutter assembly, a cutter head and a cutter rod.
In order to solve the technical problem, the invention provides a positioning connection structure, which comprises a first part and a second part, wherein the first part comprises a connection shaft, the second part is provided with a connection hole, the connection shaft can be inserted into the connection hole, the side wall of the connection shaft comprises a plurality of inner arc surfaces, the inner wall of the connection hole comprises a plurality of outer arc surfaces, the connection shaft can rotate relative to the connection hole to a position where the plurality of inner arc surfaces are respectively tangent to the plurality of outer arc surfaces, and the connection shaft can be prevented from further rotating relative to the connection hole in the same direction.
Preferably, the diameters of the plurality of inner arc surfaces are equal, the centers of circles fall on a second circle, the circles are arranged at equal intervals on the second circle, and the centers of circles of the second circle fall on the axis of the connecting shaft; the diameters of the outer arc surfaces are equal, the circle centers of the inner arc surfaces are located on a first circle, the circle centers of the inner arc surfaces are arranged on the first circle at equal intervals, when the inner arc surfaces are respectively tangent to the outer arc surfaces, the circle center of the first circle is located on the axis of the connecting shaft, and the diameter of the second circle is larger than that of the first circle.
Preferably, when the inner arc surface is tangent to the outer arc surface, the center of the inner arc surface, the center of the outer arc surface and the axis line are not on the same straight line.
Preferably, the plurality of inner arc surfaces are arranged at intervals, an inner side surface is arranged between every two adjacent inner arc surfaces, the side wall of the connecting shaft is formed by the plurality of inner arc surfaces and the plurality of inner side surfaces in a surrounding manner, the plurality of outer arc surfaces are arranged at intervals, the two adjacent outer arc surfaces are outer side surfaces, and the inner wall of the connecting hole is formed by the plurality of outer arc surfaces and the plurality of outer side surfaces in a surrounding manner.
Preferably, the inner side surface is a planar structure, the outer side surface is an arc surface structure protruding outwards relative to the outer arc surface, a connection hole portion surrounded by the outer side surface forms an avoidance space for accommodating the inner arc surface, and when the inner arc surface of the connection shaft and the outer side surface of the connection hole are located at positions close to each other, a gap is formed between the inner arc surface and the outer side surface.
Preferably, the side wall of the connecting shaft is provided with 3 inner arc surfaces, the inner wall of the connecting hole is provided with 3 outer arc surfaces, and when the connecting shaft is inserted into the connecting hole and rotates around the same direction, the 3 outer arc surfaces are respectively tangent to the 3 inner arc surfaces to form a three-point positioning structure.
Specifically, three equi-spaced points are randomly taken on the first circle to form the center of the outer arc surface, and a single equi-spaced point is randomly taken on the second circle to form the center of the inner arc surface, so that the eccentric structure of the outer arc surface and the inner arc surface is formed.
The application also provides a cutter assembly, the cutter assembly have the location connection structure, part one be the cutter head, part two be the cutter arbor.
Preferably, the cutter head still include a cutter head body, the connecting axle locate the cutter head body on, the connecting axle seted up a through-hole, the through-hole with the coaxial setting of connecting axle, the bottom of the connecting hole of cutter rod still seted up with the coaxial screw hole that sets up of connecting hole, cutter unit still include a screw, work as the connecting axle insert the connecting hole in, the screw pass screw hole and through-hole, with the cutter head with the cutter rod connect.
The application also provides a cutter head, the cutter head do part one.
The application also provides a cutter rod, which is the second part.
By means of the technical scheme, the invention has the following beneficial effects:
the positioning connection structure provided by the invention realizes high-precision connection between parts during assembly, can realize zero clearance and zero error of the parts, is convenient and quick, and is especially suitable for high-precision connection between long parts. The connection structure of the application reduces the requirement of manufacturing precision when parts are connected, is easy to manufacture, and can achieve high connection positioning precision without depending on the manufacturing tolerance control of a part connection part.
Drawings
FIG. 1 is a schematic structural view of a tool head of the present application;
FIG. 2 is a schematic view of the construction of the cutter bar of the present application;
FIG. 3 is a schematic end view of the cutter head of the present application;
FIG. 4 is a schematic end view of the cutter bar of the present application;
FIG. 5 is a schematic end view of the coupling shaft of the tool head of the present application;
FIG. 6 is a schematic end view of the attachment bore of the cutter bar of the present application;
fig. 7 is a structural view of the cutter head of the present application with the connecting shaft inserted into the connecting hole;
fig. 8 is a schematic view of the structure of the cutter head according to the present invention after the coupling shaft is locked with the coupling hole of the cutter bar.
Wherein: 1. a connecting shaft; 2. a tool head body; 3. a through hole; 4. a cutter bar; 5. connecting holes; 6. a threaded hole; 11. an inner arc surface; 12. an inner side surface; 41. an outer arc surface; 42. an outer side surface; 10. a first circle; 20. a second circle; 51. a gap.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, in the description of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is considered as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The invention provides a positioning connection structure, which comprises a first part and a second part, wherein the first part comprises a connecting shaft 1, the second part is provided with a connecting hole 5, the connecting shaft 1 can be inserted into the connecting hole 5, the side wall of the connecting shaft 1 comprises a plurality of inner arc surfaces 11, the inner wall of the connecting hole 5 comprises a plurality of outer arc surfaces 41, the connecting shaft 1 can rotate relative to the connecting hole 5 to a position where the plurality of inner arc surfaces 11 are respectively tangent to the plurality of outer arc surfaces 41, and the connecting shaft 1 can be prevented from further rotating relative to the connecting hole 5 in the same direction. The diameters of the inner arc surfaces 11 are equal, the centers of the circles fall on a second circle 20, the circles are arranged on the second circle 20 at equal intervals, and the centers of the circles of the second circle 20 fall on the axis of the connecting shaft 1; the diameters of the plurality of outer arc surfaces 41 are equal, the centers of the circles fall on a first circle 10, the circles are arranged on the first circle 10 at equal intervals, when the plurality of inner arc surfaces 11 are respectively tangent to the plurality of outer arc surfaces 41, the centers of the circles of the first circle 10 fall on the axis of the connecting shaft 1, and the diameter of the second circle 20 is larger than the diameter of the first circle 10. When the inner arc surface 11 is tangent to the outer arc surface 41, the center of the inner arc surface 11, the center of the outer arc surface 41 and the axis are not on the same straight line. The inner arc surfaces 11 are arranged at intervals, an inner side surface 12 is arranged between every two adjacent inner arc surfaces 11, the side wall of the connecting shaft 1 is formed by the inner arc surfaces 11 and the inner side surfaces 12 in a surrounding mode, the outer arc surfaces 41 are arranged at intervals, the two adjacent outer arc surfaces 41 are outer side surfaces 42, and the inner wall of the connecting hole 5 is formed by the outer arc surfaces 41 and the outer side surfaces 42 in a surrounding mode.
The inner side surface 12 is a plane structure, the outer side surface 42 is an arc surface structure protruding outward relative to the outer arc surface 41, the connecting hole 5 surrounded by the outer side surface 42 forms an avoiding space for accommodating the inner arc surface 11, and when the inner arc surface 11 of the connecting shaft 1 and the outer side surface 42 of the connecting hole 5 are in a mutually close position, a gap 51 is formed between the inner arc surface 11 and the outer side surface 42.
As shown in fig. 1 to 8, the cutter assembly of the present application has the positioning connection structure, the first part is a cutter head, and the second part is a cutter rod 4. The cutter head still include a cutter head body 2, connecting axle 1 locate cutter head body 2 on, connecting axle 1 seted up a through-hole 3, through-hole 3 with connecting axle 1 coaxial setting, the bottom of connecting hole 5 of cutter arbor 4 still seted up with the coaxial screw hole 6 that sets up of connecting hole 5, cutter unit still include a screw, work as connecting axle 1 insert connecting hole 5 in the time, the screw pass screw hole 6 and through-hole 3, will the cutter head with cutter arbor 4 connect. The side wall of the connecting shaft 1 is provided with 3 inner arc surfaces 11, the inner wall of the connecting hole 5 is provided with 3 outer arc surfaces 41, and when the connecting shaft 1 is inserted into the connecting hole 5 and rotates around the same direction, the 3 outer arc surfaces 41 are respectively tangent to the 3 inner arc surfaces 11 to form a three-point positioning structure. Specifically, three bisectors are arbitrarily taken on the first circle 10 to form the center of the outer arc surface 41, and a single bisector is arbitrarily taken on the second circle 20 to form the center of the inner arc surface 11, so that the eccentric structure of the outer arc surface 41 and the inner arc surface 11 is formed.
The positioning connection structure of the invention realizes high-precision connection between parts assembly, can realize zero clearance 51 zero error of the parts, is convenient and quick, and is especially suitable for high-precision connection between long parts. The connection structure of the application reduces the requirement of manufacturing precision when parts are connected, is easy to manufacture, and can achieve high connection positioning precision without depending on the manufacturing tolerance control of a part connection part.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. A positioning connection structure comprises a first part and a second part, wherein the first part comprises a connecting shaft, the second part is provided with a connecting hole, and the connecting shaft can be inserted into the connecting hole,
the side wall of the connecting shaft comprises a plurality of inner arc surfaces, the inner wall of the connecting hole comprises a plurality of outer arc surfaces, the connecting shaft can rotate relative to the connecting hole to a position where the plurality of inner arc surfaces are tangent to the plurality of outer arc surfaces respectively, and the connecting shaft can be prevented from further rotating around the same direction relative to the connecting hole.
2. The positioning and connecting structure according to claim 1, wherein the diameters of the plurality of inner arc surfaces are equal, the centers of the inner arc surfaces are located on a second circle, the inner arc surfaces are arranged at equal intervals on the second circle, and the centers of the second circle are located on the axis of the connecting shaft;
the diameters of the outer arc surfaces are equal, the circle centers of the inner arc surfaces are located on a first circle, the circle centers of the inner arc surfaces are arranged on the first circle at equal intervals, when the inner arc surfaces are respectively tangent to the outer arc surfaces, the circle center of the first circle is located on the axis of the connecting shaft, and the diameter of the second circle is larger than that of the first circle.
3. The positioning and connecting structure as recited in claim 2, wherein when the inner arc surface is tangent to the outer arc surface, the center of the inner arc surface, the center of the outer arc surface, and the axis of the inner arc surface are not collinear.
4. The positioning and connecting structure according to claim 3, wherein a plurality of said inner arc surfaces are arranged at intervals, an inner side surface is arranged between two adjacent inner arc surfaces, the side wall of said connecting shaft is formed by surrounding a plurality of said inner arc surfaces and a plurality of said inner side surfaces, a plurality of said outer arc surfaces are arranged at intervals, two adjacent outer arc surfaces are outer side surfaces, and the inner wall of said connecting hole is formed by surrounding a plurality of outer arc surfaces and a plurality of outer side surfaces.
5. The positioning and connecting structure as claimed in claim 4, wherein the inner side surface is a planar structure, the outer side surface is an arc structure protruding outward relative to the outer arc surface, the connecting hole portion surrounded by the outer side surface forms an avoiding space for accommodating the inner arc surface, and when the inner arc surface of the connecting shaft and the outer side surface of the connecting hole are in a position close to each other, a gap is formed between the inner arc surface and the outer side surface.
6. The positioning connection structure of claim 5, wherein the side wall of the connection shaft has 3 inner arc surfaces, the inner wall of the connection hole has 3 outer arc surfaces, and when the connection shaft is inserted into the connection hole and rotates in the same direction, the 3 outer arc surfaces are respectively tangent to the 3 inner arc surfaces to form a three-point positioning structure.
7. A cutter assembly, characterized in that the cutter assembly is provided with the positioning and connecting structure as claimed in any one of claims 1 to 6, the first part is a cutter head, and the second part is a cutter rod.
8. The cutting tool assembly according to claim 7, wherein the cutting tool head further comprises a cutting tool head body, the connecting shaft is disposed on the cutting tool head body, the connecting shaft is provided with a through hole, the through hole is coaxially disposed with the connecting shaft, a threaded hole coaxially disposed with the connecting hole is further formed at the bottom of the connecting hole of the cutting tool rod, the cutting tool assembly further comprises a screw, and when the connecting shaft is inserted into the connecting hole, the screw penetrates through the threaded hole and the through hole to connect the cutting tool head with the cutting tool rod.
9. A tool bit, characterized in that the tool bit is the first part of any one of claims 1 to 6.
10. A tool bar, characterized in that the tool bar is the second part according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110799274.1A CN113547138A (en) | 2021-07-15 | 2021-07-15 | Positioning connection structure, cutter assembly, cutter head and cutter rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110799274.1A CN113547138A (en) | 2021-07-15 | 2021-07-15 | Positioning connection structure, cutter assembly, cutter head and cutter rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113547138A true CN113547138A (en) | 2021-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110799274.1A Pending CN113547138A (en) | 2021-07-15 | 2021-07-15 | Positioning connection structure, cutter assembly, cutter head and cutter rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113547138A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060072976A1 (en) * | 2004-10-05 | 2006-04-06 | Frota De Souza Ruy | Modular drill |
| CN101927368A (en) * | 2009-06-23 | 2010-12-29 | 山特维克知识产权股份有限公司 | The rotatable tool and loose top and the matrix that are used for chip removing machining |
| US20140017022A1 (en) * | 2012-07-11 | 2014-01-16 | Kennametal, Inc. | Coupling point for a modular rotary tool and tool head carrier for a modular rotary tool |
| CN104853869A (en) * | 2012-12-13 | 2015-08-19 | 伊斯卡有限公司 | Cutting tool and replaceable cutting head having spiral driven surfaces therefor |
| US20170113282A1 (en) * | 2015-10-23 | 2017-04-27 | Kennametal Inc. | Tool coupling between two coupling parts, and coupling part for such a tool coupling |
| CN107457440A (en) * | 2016-06-03 | 2017-12-12 | 益壮企业有限公司 | The connecting structure of machining tool |
| CN214517644U (en) * | 2021-04-14 | 2021-10-29 | 成都锋宜银虎数控刀具有限公司 | Rotating part, cutter and compound cutter convenient to disassemble and assemble and having stable self-locking function |
| CN215902740U (en) * | 2021-07-15 | 2022-02-25 | 苏州咖多切削刀具有限公司 | Positioning connection structure, cutter assembly, cutter head and cutter rod |
-
2021
- 2021-07-15 CN CN202110799274.1A patent/CN113547138A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060072976A1 (en) * | 2004-10-05 | 2006-04-06 | Frota De Souza Ruy | Modular drill |
| CN101927368A (en) * | 2009-06-23 | 2010-12-29 | 山特维克知识产权股份有限公司 | The rotatable tool and loose top and the matrix that are used for chip removing machining |
| US20140017022A1 (en) * | 2012-07-11 | 2014-01-16 | Kennametal, Inc. | Coupling point for a modular rotary tool and tool head carrier for a modular rotary tool |
| CN104853869A (en) * | 2012-12-13 | 2015-08-19 | 伊斯卡有限公司 | Cutting tool and replaceable cutting head having spiral driven surfaces therefor |
| US20170113282A1 (en) * | 2015-10-23 | 2017-04-27 | Kennametal Inc. | Tool coupling between two coupling parts, and coupling part for such a tool coupling |
| CN107457440A (en) * | 2016-06-03 | 2017-12-12 | 益壮企业有限公司 | The connecting structure of machining tool |
| CN214517644U (en) * | 2021-04-14 | 2021-10-29 | 成都锋宜银虎数控刀具有限公司 | Rotating part, cutter and compound cutter convenient to disassemble and assemble and having stable self-locking function |
| CN215902740U (en) * | 2021-07-15 | 2022-02-25 | 苏州咖多切削刀具有限公司 | Positioning connection structure, cutter assembly, cutter head and cutter rod |
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