CN113547138B - 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
- CN113547138B CN113547138B CN202110799274.1A CN202110799274A CN113547138B CN 113547138 B CN113547138 B CN 113547138B CN 202110799274 A CN202110799274 A CN 202110799274A CN 113547138 B CN113547138 B CN 113547138B
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- arc surfaces
- connecting shaft
- hole
- connecting hole
- inner arc
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- 238000004519 manufacturing process Methods 0.000 description 8
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
本申请提供一种定位连接结构及刀具组件及刀具头及刀具杆，所述的定位连接结构，包括零件一和零件二，所述的零件一包括一连接轴，所述的零件二设有一连接孔，所述的连接轴能够插入至所述的连接孔中，所述的连接轴的侧壁包括多个内圆弧面，所述的连接孔的内壁包括多个外圆弧面，所述的连接轴能够相对所述的连接孔旋转至多个内圆弧面分别与多个外圆弧面相切的位置，并能够阻止所述的连接轴相对所述的连接孔绕同一方向进一步的转动。本发明的定位连接结构，实现零件装配之间的高精密连接，可以实现零件的零间隙零误差，方便快捷，尤其对于长零件之间的高精密连接。
The present application provides a positioning connection structure and a tool assembly and a tool head and a tool rod, the positioning connection structure includes part one and part two, part one includes a connection shaft, part two is provided with a connection hole, the connection shaft can be inserted into the connection hole, the side wall of the connection shaft includes a plurality of inner arc surfaces, the inner wall of the connection hole includes 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 can prevent the connection shaft from further rotating in the same direction relative to the connection hole. The positioning connection structure of the present invention realizes high-precision connection between parts assembly, can realize zero gap and zero error of parts, is convenient and fast, especially 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, most of the matching modes of the connecting shaft and the connecting hole are shaft hole clearance matching, no matter how precise shaft holes are matched, the matching is clearance existing due to the fact that tolerance exists, and zero-clearance zero-error matching cannot be achieved. In addition, the fitting mode has high requirements on the manufacturing precision of the connecting part of the parts for the fitting of the over-positioning conical surfaces, and the production cost is high.
It should be noted that the foregoing description of the background art is only for the purpose of providing a clear and complete description of the technical solution of the present invention and is presented for the convenience of understanding by those skilled in the art. The above-described solutions are not considered to be known to the person skilled in the art simply because they are set forth in the background of the invention section.
Disclosure of Invention
The invention aims to solve the technical problem of providing a positioning connection structure, a cutter assembly, a cutter head and a cutter rod.
In order to solve the technical problems, 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 to a position where the plurality of inner arc surfaces are tangent to the plurality of outer arc surfaces respectively relative to the connection hole, and the connection shaft can be prevented from further rotating around the same direction relative to the connection hole.
Preferably, the diameters of the inner arc surfaces are equal, the circle centers are arranged on a second circle at equal intervals, the circle centers of the second circle are arranged on the axis of the connecting shaft, the diameters of the outer arc surfaces are equal, the circle centers are arranged on a first circle at equal intervals, when the inner arc surfaces are tangent to the outer arc surfaces respectively, the circle centers of the first circle are arranged 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 are not on the same straight line.
Preferably, a plurality of inner arc surfaces are arranged at intervals, an inner side surface is arranged between two adjacent inner arc surfaces, the side wall of the connecting shaft is formed by a plurality of inner arc surfaces and a plurality of inner side surfaces in a surrounding mode, a plurality of outer arc surfaces are arranged at intervals, two adjacent outer arc surfaces are outer side surfaces, and the inner wall of the connecting hole is formed by a plurality of outer arc surfaces and a plurality of outer side surfaces in a surrounding mode.
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, the connecting hole part enclosed by the outer side surface forms an avoidance 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 positioned at a position 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 tangent to the 3 inner arc surfaces respectively to form a three-point positioning structure.
Specifically, three equally-divided points are arbitrarily taken on a first circle to form the circle center of the outer arc surface, and a single equally-divided point is arbitrarily taken on a second circle to form the circle center of the inner arc surface, so that an eccentric structure of the outer arc surface and the inner arc surface is formed.
The application also provides a cutter assembly, which is provided with the positioning and connecting structure, wherein the first part is a cutter head, and the second part is a cutter rod.
Preferably, the cutter head further comprises a cutter head body, the connecting shaft is arranged on the cutter head body, the connecting shaft is provided with a through hole, the through hole and the connecting shaft are coaxially arranged, the bottom of the connecting hole of the cutter rod is further provided with a threaded hole coaxially arranged with the connecting hole, the cutter 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 cutter head with the cutter rod.
The application also provides a cutter head which is the first part.
The application also provides a cutter rod, which is the second part.
By the technical scheme, the invention has the following beneficial effects:
The positioning connection structure provided by the application realizes high-precision connection between part assemblies, can realize zero clearance and zero error of parts, is convenient and quick, and is especially suitable for high-precision connection between long parts. The connecting structure of the application reduces the manufacturing precision requirement when parts are connected, is easy to manufacture, and can achieve high connection positioning precision without depending on the manufacturing tolerance control of the part connecting part.
Drawings
FIG. 1 is a schematic view of the structure of the tool head of the present application;
FIG. 2 is a schematic view of the structure of the tool post of the present application;
FIG. 3 is a schematic end view of the tool 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 connecting shaft of the tool head of the present application;
FIG. 6 is a schematic end view of the connecting hole of the tool post of the present application;
FIG. 7 is a schematic view of the structure of the tool 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 tool head of the present application after the connecting shaft is locked with the connecting hole of the tool bar.
Wherein, 1, a connecting shaft; 2, a cutter head body, 3, a through hole, 4, a cutter rod, 5, a connecting hole, 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 and 51, and a gap.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the 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 to distinguish between similar objects, and there is no order of preference between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
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 to a position where the plurality of inner arc surfaces 11 are tangent to the plurality of outer arc surfaces 41 respectively relative to the connecting hole 5, and the connecting shaft 1 can be prevented from further rotating around the same direction relative to the connecting hole 5. The diameters of the inner arc surfaces 11 are equal, the circle centers of the inner arc surfaces 11 are arranged on a second circle 20 at equal intervals, the circle centers of the second circle 20 are arranged on the axis of the connecting shaft 1, the diameters of the outer arc surfaces 41 are equal, the circle centers of the outer arc surfaces are arranged on a first circle 10 at equal intervals, when the inner arc surfaces 11 are tangential to the outer arc surfaces 41, the circle centers of the first circle 10 are arranged 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 two adjacent inner arc surfaces 11, the side wall of the connecting shaft 1 is formed by surrounding a plurality of inner arc surfaces 11 and a plurality of inner side surfaces 12, a plurality of outer arc surfaces 41 are arranged at intervals, two adjacent outer arc surfaces 41 are outer side surfaces 42, and the inner wall of the connecting hole 5 is formed by surrounding a plurality of outer arc surfaces 41 and a plurality of outer side surfaces 42.
The inner side 12 is a planar structure, the outer side 42 is an arc surface structure protruding outwards relative to the outer arc surface 41, the connecting hole 5 surrounded by the outer side 42 forms an avoidance space for accommodating the inner arc surface 11, and when the inner arc surface 11 of the connecting shaft 1 and the outer side 42 of the connecting hole 5 are positioned close to each other, a gap 51 is formed between the inner arc surface 11 and the outer side 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 bar 4. The cutter head also comprises a cutter head body 2, the connecting shaft 1 is arranged on the cutter head body 2, a through hole 3 is formed in the connecting shaft 1, the through hole 3 and the connecting shaft 1 are coaxially arranged, a threaded hole 6 which is coaxially arranged with the connecting hole 5 is formed in the bottom of the connecting hole 5 of the cutter rod 4, the cutter assembly also comprises a screw, and when the connecting shaft 1 is inserted into the connecting hole 5, the screw penetrates through the threaded hole 6 and the through hole 3 to connect the cutter head with the cutter rod 4. 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 tangent to the 3 inner arc surfaces 11 respectively to form a three-point positioning structure. Specifically, the center of the outer arc surface 41 is formed by arbitrarily taking three equal dividing points on the first circle 10, and the center of the inner arc surface 11 is formed by arbitrarily taking a single equal dividing point on the second circle 20, so that an eccentric structure of the outer arc surface 41 and the inner arc surface 11 is formed.
The positioning connection structure provided by the application realizes high-precision connection between component assemblies, can realize zero clearance 51 zero error of components, is convenient and quick, and is especially suitable for high-precision connection between long components. The connecting structure of the application reduces the manufacturing precision requirement when parts are connected, is easy to manufacture, and can achieve high connection positioning precision without depending on the manufacturing tolerance control of the part connecting part.
The above-described embodiments are merely preferred embodiments for fully explaining the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present invention, and are intended to be within the scope of the present invention. The protection scope of the invention is subject to the claims.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110799274.1A CN113547138B (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 CN113547138B (en) | 2021-07-15 | 2021-07-15 | Positioning connection structure, cutter assembly, cutter head and cutter rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113547138A CN113547138A (en) | 2021-10-26 |
| CN113547138B true CN113547138B (en) | 2025-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110799274.1A Active CN113547138B (en) | 2021-07-15 | 2021-07-15 | Positioning connection structure, cutter assembly, cutter head and cutter rod |
Country Status (1)
| Country | Link |
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| CN (1) | CN113547138B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457440A (en) * | 2016-06-03 | 2017-12-12 | 益壮企业有限公司 | Assembling structure of processing tool |
| 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 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7309196B2 (en) * | 2004-10-05 | 2007-12-18 | Kennametal Inc. | Modular drill |
| SE533855C2 (en) * | 2009-06-23 | 2011-02-08 | Sandvik Intellectual Property | Rotatable tool for chip separating machining as well as loose stop and basic body for this |
| DE102012212146B4 (en) * | 2012-07-11 | 2024-02-01 | Kennametal Inc. | Coupling point for a modular rotary tool and tool head and carrier for such a modular rotary tool |
| US9409241B2 (en) * | 2012-12-13 | 2016-08-09 | Iscar, Ltd. | Cutting tool and replaceable cutting head having spiral driven surfaces therefor |
| DE102015220777B4 (en) * | 2015-10-23 | 2020-08-13 | Kennametal Inc. | Tool coupling between two coupling parts as well as coupling part for such a tool coupling |
| 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 |
-
2021
- 2021-07-15 CN CN202110799274.1A patent/CN113547138B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457440A (en) * | 2016-06-03 | 2017-12-12 | 益壮企业有限公司 | Assembling structure of processing tool |
| 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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| Publication number | Publication date |
|---|---|
| CN113547138A (en) | 2021-10-26 |
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