CN216151721U - Connecting structure of cutter and cutter handle - Google Patents
Connecting structure of cutter and cutter handle Download PDFInfo
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- CN216151721U CN216151721U CN202122011205.8U CN202122011205U CN216151721U CN 216151721 U CN216151721 U CN 216151721U CN 202122011205 U CN202122011205 U CN 202122011205U CN 216151721 U CN216151721 U CN 216151721U
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Abstract
The utility model relates to a connecting structure of a cutter and a cutter handle, which comprises the cutter, a connecting part and the cutter handle, wherein the cutter and the cutter handle are connected through the connecting part, a connecting cavity corresponding to the connecting part is arranged at the inner end of the cutter handle, the connecting part is a frustum handle or a cylindrical handle, the connecting cavity is a conical cavity or a cylindrical cavity, a symmetrical platform is further arranged at the outer end of the connecting part, a symmetrical boss in clearance fit with the symmetrical platform is arranged at the outer end of the connecting cavity, a through hole and a middle hole are sequentially formed in the cutter handle from the outer end to the inner end, the diameter of the through hole is larger than that of the middle hole, a connecting hole is formed in the core part of the connecting part, an internal thread is formed in the inner wall of the connecting hole, the connecting structure further comprises a fixing part which is an external thread, and the fixing part penetrates through the through hole and the middle hole from the rear end of the cutter handle and then is connected with the internal thread so that the cutter and the cutter handle are locked. Therefore, the problem that materials are wasted due to the fact that the cutter and the cutter handle which are damaged after long-term use can only be discarded integrally is solved.
Description
Technical Field
The utility model relates to the technical field of cutters, in particular to a connecting structure of a cutter and a cutter handle.
Background
At present, current cutter is generally fixed on the handle of a knife through the welded mode, after cutting metal surface for a long time, the blade of cutter must have wearing and tearing, because cutter and handle of a knife be fixed body structure together, cutter and the handle of a knife after using for a long time and damaging can only wholly abandon, so cause the material extravagant.
Therefore, how to overcome the above-mentioned deficiencies in the conventional technologies becomes an important technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model provides a connecting structure of a cutter and a cutter handle, which aims to solve the problems that the existing cutter is generally fixed on the cutter handle in a welding mode, the cutting edge of the cutter is inevitably worn after the metal surface is cut for a long time, and the cutter handle are fixed together to form an integral structure, so that the cutter and the cutter handle which are damaged after long-term use can only be integrally discarded, and the material waste is caused.
The connecting structure of the cutter and the cutter handle adopts the following technical scheme:
the utility model provides a connection structure of cutter and handle of a knife, includes cutter, connecting portion and handle of a knife, the cutter with the handle of a knife passes through connecting portion to be connected, the interior tip of handle of a knife be equipped with the corresponding connection cavity of connecting portion, its characterized in that, connecting portion set up to frustum handle or cylinder handle, the connection cavity sets up to toper chamber or cylinder chamber, the outer tip of connecting portion still is equipped with symmetrical platform, the connection cavity outer end be equipped with symmetrical platform clearance fit's symmetry boss, the handle of a knife is equipped with clearing hole and mesopore from outer end to inner in proper order, the diameter of clearing hole is greater than the mesopore, the core of connecting portion is equipped with the connecting hole, the inner wall of connecting hole is equipped with the internal thread, connection structure still includes to the mounting of external screw thread, the mounting follows the handle of a knife rear end pass the clearing hole, mesopore after with female connection, female connection, So that the tool and the shank are locked.
Preferably, the symmetrical platform is arranged in an oblate or hexagonal structure.
Preferably, the cutter and the connecting portion are provided as an integral structure.
Preferably, a tool withdrawal groove is arranged between the connecting cavity and the symmetrical boss.
Preferably, the cutter is provided as a milling cutter or a reamer or a drilling cutter or a boring cutter with a diameter of 40mm or less.
Preferably, the fixing member is provided as a screw.
Preferably, the front end of cutter is equipped with 1-6 cutting edges, the cutting edge profile of cutting edge includes straightway and circular arc section, the quantity of straightway is 0-3, the quantity of circular arc section is 1-5, and the cutting edge is provided with the negative chamfer, negative chamfer width is 0.05mm-0.5mm, just the angle of negative chamfer is 10 ° -30 °.
Preferably, the edge part of each cutting edge is provided with 1-3 air outlet holes, and the diameter of each air outlet hole is 0.5-4 mm.
The utility model has the beneficial effects that: the cutter and the cutter handle are connected through a connecting part, one end of the connecting part is connected with the cutter, the other end of the connecting part is connected with the cutter handle, a connecting cavity corresponding to the connecting part is arranged at the end part of the cutter handle, the connecting part is a frustum handle or a cylindrical handle, the connecting structure further comprises a fixing part, a symmetrical platform is further arranged at the outer end of the connecting part, a symmetrical boss in clearance fit with the symmetrical platform is arranged at the outer end of the connecting cavity, the symmetrical boss is in clearance fit with the symmetrical platform, the cutter is prevented from rotating, the fixing among the cutter, the connecting part and the cutter handle is tightened from the rear end of the cutter through the fixing part, if the cutter needs to be replaced, the cutter handle is firstly detached from the machine tool, then the cutter is replaced, and therefore, when the cutter is worn or damaged, the cutter is firstly detached from the machine tool, the cutter is replaced, and the problems that the whole cutter is scrapped and the material is wasted are avoided; and the repeated positioning precision of the cutter connecting structure is within 0.003mm, so that the machining precision is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only 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.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic view of a connecting structure of a cutter and a cutter handle when a connecting part is a frustum handle and a symmetrical platform is a flat square structure in the embodiment of the utility model;
FIG. 2 is a schematic view of a left side view of the partial structure of FIG. 1;
FIG. 3 is a right side view of FIG. 1;
FIG. 4 is a schematic view of a connecting structure of the cutter and the cutter handle when the connecting part is a cylindrical handle and the symmetrical platform is in a flat square structure in the embodiment of the utility model;
FIG. 5 is a schematic view of a left side view of the partial structure of FIG. 4;
FIG. 6 is a partial structural diagram of the right side view of FIG. 4;
FIG. 7 is a schematic view of a connecting structure of the cutter and the cutter handle when the connecting part is a frustum handle and the symmetrical platform is in a hexagonal structure in the embodiment of the utility model;
FIG. 8 is a schematic view of a left side view of the partial structure of FIG. 7;
fig. 9 is a right side view of fig. 7.
In the figure:
1-cutter, 2-cutter handle, 3-cylindrical handle, 4-frustum handle, 5-cylindrical cavity, 6-conical cavity, 7-symmetrical platform, 8-symmetrical boss, 9-through hole, 10-middle hole, 11-screw, 12-connecting hole, 13-internal thread, 14-tool withdrawal groove, 15-cutting edge, 16-air outlet hole, 17-flat square structure and 18-hexagonal structure.
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.
Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the utility model described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the utility model described in the claims.
Referring to fig. 1-9, this embodiment provides a connecting structure of a cutter and a handle, including a cutter 1, a connecting portion and a handle 2, the cutter 1 and the handle 2 are connected through the connecting portion, a connecting cavity corresponding to the connecting portion is provided at an inner end of the handle 2, the connecting portion is a frustum handle 4 or a cylindrical handle 3, the connecting cavity is a tapered cavity 6 or a cylindrical cavity 5, a symmetrical platform 7 is further provided at an outer end of the connecting portion, a symmetrical boss 8 in clearance fit with the symmetrical platform 7 is provided at an outer end of the connecting cavity, a through hole 9 and a central hole 10 are sequentially provided from the outer end to the inner end of the handle 2, a diameter of the through hole 9 is larger than that of the central hole 10, the central hole 10 is located at an outer end of the symmetrical boss 8, a connecting hole 12 is provided at a core of the connecting portion, an internal thread 13 is provided at an inner wall of the connecting hole 12, the fixing member further includes a fixing member provided with an external thread, the fixing member passes through the through hole 9 and the through the rear end of the handle 2, The middle hole 10 is connected with the internal thread 13 so that the cutter 1 and the cutter handle 2 are locked, and the symmetrical bosses 8 are in clearance fit with the symmetrical platforms 7 to prevent the cutter 1 from rotating.
Specifically, the fixing member may be a screw 11, but may have other structures as appropriate.
In particular, the symmetrical platform 7 can be provided as a flat square structure 17 or a hexagonal structure 18 as shown in fig. 2, 5 or 8, as the case may be, the flat square structure 17 and the hexagonal structure 18 herein being commonly known by the skilled person, the specific structure being shown in fig. 1 and 3.
It should be noted that, the tool 1 and the connecting portion can be set to be an integral structure, so that the connecting cavity of the tool holder 2 is fixed, the tool and the connecting portion can be replaced to be processed into the integral structure when the tool is machined, and when the tool 1 is worn, only the tool and the connecting portion required to be matched with the connecting cavity of the tool holder 2 need to be replaced.
Specifically, the tool 1 is provided as a milling cutter, a reamer, a drilling cutter, a boring cutter, or the like having a diameter of 40mm or less, but may be other tools as appropriate.
By the arrangement, the cutter can be quickly replaced, and is simple and convenient; and the repeated positioning precision of the cutter connecting structure is within 0.003mm, so that the machining precision is improved. When the cutting part of the cutter is worn, the cutter is only needed to be replaced, the cutter handle is not needed to be replaced, and a new replacement cutter is connected with the connecting cavity of the cutter handle. The problem of current cutter generally fix on the handle of a knife through the welded mode, after cutting metal surface for a long time, the blade of cutter must have wearing and tearing, because cutter and handle of a knife be fixed body structure together, cutter and the handle of a knife after using for a long time and damaging can only wholly abandon, cause the material waste is solved.
Preferably, in order to meet the machining requirements, a relief groove 14 is provided between the connecting cavity and the symmetrical boss 8.
By integrating the embodiment, the cutter 1 is tightened and fixed through the screw 11 penetrating through the rear end of the cutter handle 2, when the cutter 1 needs to be replaced, the cutter handle 2 is firstly detached from the machine tool, then the cutter 1 is replaced, so that when the cutter is worn or damaged, the cutter handle 2 is firstly detached from the machine tool, the cutter 1 is replaced, and the cutter is mounted and fixed on the machine tool without integral scrapping and material waste; and the repeated positioning precision of the cutter connecting structure is within 0.003mm, so that the machining precision is improved.
In the present embodiment, as shown in fig. 1, 4 and 7, the front end of the cutter 1 is provided with 1 to 6 cutting edges 15, specifically, 3, 4, 5, and the like, as the case may be.
Further, as shown in fig. 1, 4 and 7, the blade portion profile of the cutting edge 15 includes straight line segments and arc segments, the number of the straight line segments is 0-3, the number of the arc segments is 1-5, specifically, the number of the straight line segments may be set to 1, the number of the arc segments is two, the straight line segments are located between two arc segments, and other numbers may also be set specifically as the case may be.
Meanwhile, the cutting edge 15 is provided with a negative chamfer, the width of the negative chamfer is 0.05mm-0.5mm, the angle of the negative chamfer is 10-30 degrees, and meanwhile, the cutting edge is passivated. The specific negative chamfer width and angle values are contingent.
Further, the edge of each cutting edge 15 is provided with 1 to 3 air outlets 16, specifically three air outlets may be provided, or other values may be provided, as the case may be, the diameter of the air outlet 16 is 0.5mm to 4mm, specifically, 0.5mm, 2mm, 4mm, or other values may be provided, as the case may be. Further, the position of the air outlet 16 can be simulated through machining, so that the optimal chip removal effect can be achieved.
In conclusion, the cutter connected by the connecting structure in the embodiment can realize cold dry cutting, avoids the problems of difficult maintenance and environmental pollution caused by cutting fluid, is green and environment-friendly, greatly improves the processing efficiency, and can improve the surface roughness of a processed workpiece, particularly the surface roughness of the ball track of the rzeppa universal joint after being processed can reach Ra0.2.
It should be noted that the terms "inside" and "outside" refer to the directions along the axial direction of the tool holder, where the end close to the tool is inside and the end far from the tool is outside.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides a connection structure of cutter and handle of a knife, includes cutter, connecting portion and handle of a knife, the cutter with the handle of a knife passes through connecting portion to be connected, the interior tip of handle of a knife be equipped with the corresponding connection cavity of connecting portion, its characterized in that, connecting portion set up to frustum handle or cylinder handle, the connection cavity sets up to toper chamber or cylinder chamber, the outer tip of connecting portion still is equipped with symmetrical platform, the connection cavity outer end be equipped with symmetrical platform clearance fit's symmetry boss, the handle of a knife is equipped with clearing hole and mesopore from outer end to inner in proper order, the diameter of clearing hole is greater than the mesopore, the core of connecting portion is equipped with the connecting hole, the inner wall of connecting hole is equipped with the internal thread, connection structure still includes to the mounting of external screw thread, the mounting follows the handle of a knife rear end pass the clearing hole, mesopore after with female connection, female connection, So that the tool and the shank are locked.
2. The tool and tool shank coupling structure of claim 1, wherein the symmetrical platform is configured in a flat square configuration or a hexagonal configuration.
3. The tool and tool shank coupling structure of claim 1, wherein the tool and the coupling portion are provided as a unitary structure.
4. The tool and tool shank coupling structure of claim 1, wherein a relief groove is provided between the coupling cavity and the symmetrical boss.
5. The coupling structure of a tool and a shank according to claim 1, wherein the tool is provided as a milling cutter or a reamer or a drilling cutter or a boring cutter having a diameter of 40mm or less.
6. The tool and holder coupling structure of claim 1, wherein the fixing member is provided as a screw.
7. The connecting structure of the cutter and the cutter handle as claimed in claim 1, wherein the front end of the cutter is provided with 1-6 cutting edges, the edge part profile of each cutting edge comprises straight line segments and circular arc segments, the number of the straight line segments is 0-3, the number of the circular arc segments is 1-5, the cutting edges are provided with negative chamfers, the width of each negative chamfer is 0.05mm-0.5mm, and the angle of each negative chamfer is 10-30 °.
8. The connecting structure of the cutter and the cutter handle as claimed in claim 7, wherein the edge part of each cutting edge is provided with 1-3 air outlets, and the diameter of each air outlet is 0.5-4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122011205.8U CN216151721U (en) | 2021-08-25 | 2021-08-25 | Connecting structure of cutter and cutter handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122011205.8U CN216151721U (en) | 2021-08-25 | 2021-08-25 | Connecting structure of cutter and cutter handle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216151721U true CN216151721U (en) | 2022-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122011205.8U Active CN216151721U (en) | 2021-08-25 | 2021-08-25 | Connecting structure of cutter and cutter handle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216151721U (en) |
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2021
- 2021-08-25 CN CN202122011205.8U patent/CN216151721U/en active Active
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