CN212443417U - Cutting tool with replaceable tool bit - Google Patents
Cutting tool with replaceable tool bit Download PDFInfo
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- CN212443417U CN212443417U CN202020566842.4U CN202020566842U CN212443417U CN 212443417 U CN212443417 U CN 212443417U CN 202020566842 U CN202020566842 U CN 202020566842U CN 212443417 U CN212443417 U CN 212443417U
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- cutter
- cutter bar
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Abstract
The utility model relates to a machining tool, in particular to a cutting tool with a replaceable tool bit, which comprises a cutter bar body and a cutter head body made of materials such as hard alloy, metal ceramic or high-speed steel, a threaded shaft made of easy-cutting materials and provided with external threads, and a threaded sleeve with internal threads, wherein the cutter bar body is provided with a cutter bar inner hole, and the threaded sleeve is inserted into the cutter bar inner hole and is fixedly connected with the cutter bar body; the tool bit body is provided with a tool bit inner hole, the threaded shaft is inserted into the tool bit inner hole and is fixedly connected with the tool bit body, and the threaded sleeve is in threaded connection with the threaded shaft. Compared with the prior art, the utility model discloses taut structure adopts different materials, reduces the processing degree of difficulty and processing cost.
Description
Technical Field
The utility model relates to a machining tool specifically is a cutting tool of removable tool bit.
Background
In the prior art, a cutting tool with a replaceable tool bit is provided, wherein an external thread is processed on the tool bit, and an internal thread is processed on a tool bar to form matching. However, because the tool bit and the tool bar are made of high-rigidity materials such as hard alloy, metal ceramic or high-speed steel, the external thread and the internal thread are very difficult to machine, and the cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art's defect, disclosing a neotype draw bail that can change cutting tool bit for solve the impaired back of cutter cutting edge part, the cutter is whole to be scrapped and is caused extravagant problem, reduces the manufacturing cost of this type of product simultaneously. In order to realize the purpose, the utility model discloses the technical scheme who takes is:
the utility model provides a cutting tool of removable tool bit, includes the cutter arbor body, the cutter head body of materials such as carbide, cermet or high-speed steel, its characterized in that: the cutter bar is provided with a cutter bar inner hole, and the threaded sleeve is inserted into the cutter bar inner hole and fixedly connected with the cutter bar body; the tool bit body is provided with a tool bit inner hole, the threaded shaft is inserted into the tool bit inner hole and is fixedly connected with the tool bit body, and the threaded sleeve is in threaded connection with the threaded shaft.
Compared with the prior art, the utility model discloses taut structure adopts different materials, reduces the processing degree of difficulty and processing cost.
Furthermore, a cutter bar inner cone hole connected with the cutter bar inner hole is formed in the cutter bar body, the inner diameter of the cutter bar inner cone hole is small, the outer diameter of the cutter bar inner cone hole is large, and the minimum hole diameter of the cutter bar inner cone hole is larger than that of the cutter bar inner hole; the cutter head body is provided with an outer frustum with the same taper of the cutter rod inner taper hole, the outer frustum can enter the cutter rod inner taper hole and be tightly attached with the cutter rod inner taper hole, and when the outer frustum is tightly attached with the cutter rod inner taper hole, the cutter rod end face of the cutter rod body is tightly attached with the cutter head end face of the cutter head body. The contact structure in butt fit is a high-rigidity material difficult to machine, and the strength of the cutter system is ensured.
Furthermore, the circumferential outer circular surface of the threaded sleeve is in interference fit with the cutter bar inner hole so that the threaded sleeve is fixedly connected with the cutter bar body, and the circumferential outer circular surface of the threaded shaft is in interference fit with the cutter head inner hole so that the threaded shaft is fixedly connected with the cutter head body.
Further, the thread sleeve is fixedly connected with the cutter rod body and/or the thread shaft is fixedly connected with the cutter head body in a welding or riveting mode.
Further, a screwing groove suitable for inserting a wrench is machined in the cutter head body. The replacement and the installation of the cutter head are convenient.
Furthermore, the conicity of the inner cone hole and the outer cone of the cutter bar is greater than 1: 100.
Further, the conicity of the inner cone hole and the taper of the outer cone of the cutter rod is less than 7: 24.
Drawings
Fig. 1 is a schematic structural view of the utility model before the assembly of the tool bit and the tool bar.
Fig. 2 is the schematic view of the sectional structure of the assembled tool bit and tool bar of the present invention.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The cutting tool with a replaceable tool bit shown in fig. 1-2 comprises a tool body 1 made of hard alloy, cermet or high-speed steel, a tool bit body 2, a threaded shaft 3 made of a free-cutting material and provided with an external thread 3-1, and a threaded sleeve 4 provided with an internal thread 4-1, wherein the tool body 1 is provided with a tool body inner hole 1-1, and the threaded sleeve 4 is inserted into the tool body inner hole 1-1 and fixedly connected with the tool body 1; the cutter head body 2 is provided with a cutter head inner hole 2-4, the threaded shaft 3 is inserted into the cutter head inner hole 2-4 and is fixedly connected with the cutter head body 2, and the threaded sleeve 4 is in threaded connection with the threaded shaft 3. The cutter bar body 1 is also provided with a cutter bar inner cone hole 1-3 connected with the cutter bar inner hole 1-1, the inner diameter of the cutter bar inner cone hole 1-3 is small, the outer diameter of the cutter bar inner cone hole is large, and the minimum aperture of the cutter bar inner cone hole is larger than the aperture of the cutter bar inner hole 1-1; the cutter head body 2 is provided with an outer frustum 2-3 with the same taper as the cutter bar inner taper hole 1-3, the outer frustum 2-3 can enter the cutter bar inner taper hole 1-3 and is tightly attached to the cutter bar inner taper hole, and when the outer frustum 2-3 is tightly attached to the cutter bar inner taper hole 1-3, the cutter bar end face 1-2 of the cutter bar body 1 and the cutter head end face 2-2 of the cutter head body 2 are tightly attached to each other. The circumferential outer circular surface 4-2 of the threaded sleeve 4 is in interference fit with the cutter bar inner hole 1-1 so that the threaded sleeve 4 is fixedly connected with the cutter bar body 1, and the circumferential outer circular surface 3-2 of the threaded shaft 3 is in interference fit with the cutter head inner hole 2-4 so that the threaded shaft 3 is fixedly connected with the cutter head body 2. And a screwing groove 2-1 suitable for inserting a wrench is processed on the cutter head body 2. The conicity of the inner taper hole 1-3 and the outer taper platform 2-3 of the cutter bar is larger than 1:100 and smaller than 7: 24.
The cutter bar body 1 and the thread sleeve 4 form a cutter bar, and the cutter head body 2 and the thread shaft 3 form a cutter head. When the cutter head and the cutter bar are installed, the external thread 3-1 and the internal thread 4-1 are matched and tightened with each other, the two parts of the cutter head and the cutter bar are tightened by the threads, the cutter head moves relative to the cutter bar along the axial direction of the cutter bar, and the internal conical surface 1-3 on the cutter bar and the external conical surface 2-3 on the cutter head are attached to each other. And continuously screwing the cutter head, so that the end surface 1-2 of the cutter rod and the end surface 2-2 of the cutter head are tightly attached to finish the installation while the inner taper hole 1-3 of the cutter rod on the cutter rod and the outer frustum 2-3 of the cutter head are attached to each other. The axial rigidity is provided by the mutual fit of the inner taper hole 1-3 of the cutter bar and the outer frustum 2-3 on the cutter head and the matching of the threads, and the end rigidity is provided by the close fit of the end surface 1-2 of the cutter bar and the end surface 2-2 of the cutter head. The axial connection and the end face connection act together to form a common action form of axial rigidity and end face rigidity, and the rigidity of the cutter system in a working state is effectively improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the invention is not limited to the embodiments described herein, but is capable of other embodiments with obvious modifications, variations, and equivalents without departing from the scope of the invention. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still belong to the protection scope of the technical solution of the present invention.
Claims (7)
1. The utility model provides a cutting tool of removable tool bit, includes the cutter arbor body (1), the tool bit body (2) of materials such as carbide, cermet or high-speed steel, its characterized in that: the cutter bar is characterized by further comprising a threaded shaft (3) which is made of a free-cutting material and provided with an external thread (3-1) and a threaded sleeve (4) which is made of an internal thread (4-1), wherein the cutter bar body (1) is provided with a cutter bar inner hole (1-1), and the threaded sleeve (4) is inserted into the cutter bar inner hole (1-1) and fixedly connected with the cutter bar body (1); the tool bit inner hole (2-4) is formed in the tool bit body (2), the threaded shaft (3) is inserted into the tool bit inner hole (2-4) and fixedly connected with the tool bit body (2), and the threaded sleeve (4) is in threaded connection with the threaded shaft (3).
2. The replaceable bit cutting tool of claim 1, wherein: the cutter bar body (1) is also provided with a cutter bar inner conical hole (1-3) connected with the cutter bar inner hole (1-1), the inner diameter of the cutter bar inner conical hole (1-3) is small, the outer diameter of the cutter bar inner conical hole is large, and the minimum diameter of the cutter bar inner conical hole is larger than that of the cutter bar inner hole (1-1); the cutter head body (2) is provided with an outer frustum (2-3) with the same taper as the cutter rod inner taper hole (1-3), the outer frustum (2-3) can enter the cutter rod inner taper hole (1-3) and is tightly attached to the cutter rod inner taper hole, and when the outer frustum (2-3) is tightly attached to the cutter rod inner taper hole (1-3), the cutter rod end face (1-2) of the cutter rod body (1) and the cutter head end face (2-2) of the cutter head body (2) are tightly attached to each other.
3. The replaceable-bit cutting tool according to claim 1 or 2, wherein: the cutter bar is characterized in that a circumferential outer circular surface (4-2) of the threaded sleeve (4) is in interference fit with the cutter bar inner hole (1-1) so that the threaded sleeve (4) is fixedly connected with the cutter bar body (1), and a circumferential outer circular surface (3-2) of the threaded shaft (3) is in interference fit with the cutter head inner hole (2-4) so that the threaded shaft (3) is fixedly connected with the cutter head body (2).
4. The replaceable-bit cutting tool according to claim 1 or 2, wherein: the thread sleeve (4) is fixedly connected with the cutter arbor body (1) and/or the thread shaft (3) is fixedly connected with the cutter head body (2) in a welding or riveting mode.
5. The replaceable-bit cutting tool according to claim 1 or 2, wherein: and a screwing groove (2-1) suitable for inserting a wrench is processed on the cutter head body (2).
6. The replaceable bit cutting tool of claim 2, wherein: the conicity of the inner taper hole (1-3) and the outer taper platform (2-3) of the cutter bar is greater than 1: 100.
7. The replaceable bit cutting tool of claim 2, wherein: the conicity of the inner taper hole (1-3) and the outer taper platform (2-3) of the cutter bar is less than 7: 24.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020566842.4U CN212443417U (en) | 2020-04-16 | 2020-04-16 | Cutting tool with replaceable tool bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020566842.4U CN212443417U (en) | 2020-04-16 | 2020-04-16 | Cutting tool with replaceable tool bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212443417U true CN212443417U (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020566842.4U Active CN212443417U (en) | 2020-04-16 | 2020-04-16 | Cutting tool with replaceable tool bit |
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| CN (1) | CN212443417U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023231230A1 (en) * | 2022-06-01 | 2023-12-07 | 北京沃尔德金刚石工具股份有限公司 | Quick replacement type tool holder structure having high positioning precision |
-
2020
- 2020-04-16 CN CN202020566842.4U patent/CN212443417U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023231230A1 (en) * | 2022-06-01 | 2023-12-07 | 北京沃尔德金刚石工具股份有限公司 | Quick replacement type tool holder structure having high positioning precision |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220124 Address after: 264006 No. 356-8, Changjiang Road, Yantai Economic and Technological Development Zone, Shandong Province Patentee after: Yantai Aidi Ruineng superhard cutting tool Co.,Ltd. Address before: 264006 No.356 Changjiang Road, Yantai Development Zone, Shandong Province Patentee before: YANTAI EDDIE PRECISION MACHINERY Co.,Ltd. |