CN114042977B - Method for reforming milling cutter - Google Patents
Method for reforming milling cutter Download PDFInfo
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- CN114042977B CN114042977B CN202111382844.3A CN202111382844A CN114042977B CN 114042977 B CN114042977 B CN 114042977B CN 202111382844 A CN202111382844 A CN 202111382844A CN 114042977 B CN114042977 B CN 114042977B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
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Abstract
A method of modifying a milling cutter tool comprising: step one, selecting a milling cutter according to the diameter size of the excircle of a target slotted hole, wherein the selection conditions of the milling cutter are as follows: when the milling cutter rotates around the axis of the milling cutter, the excircle diameter of a circular processing area formed by the rotation track of the cutting edge of the milling cutter is larger than that of a target slotted hole; and step two, the milling cutter is reformed and processed in a linear cutting mode, so that when the milling cutter rotates around the axis of the milling cutter, the excircle diameter of a circular processing area formed by the rotation track of the cutting edge of the milling cutter is equal to the excircle diameter of the target slotted hole. The invention provides a method for reconstructing a milling cutter tool, wherein a tool bit is arranged on the end surface of a cutter body, and a slotted hole structure of a workpiece is machined by the tool bit in a rotating machining mode. The method for modifying the milling cutter tool provided by the invention has simple implementation steps, and the finished grooving tool has reasonable structural design and is suitable for processing circular hole-shaped or circular groove hole structures.
Description
Technical Field
The invention belongs to the technical field of part machining cutters, and particularly relates to a method for modifying a milling cutter.
Background
The grooving cutter is a machining cutter for forming a linear groove body, and for a special-shaped groove, the traditional grooving cutter is not suitable.
For example, in a longitudinal metal protective cover made of 30CrMnsi quenched and tempered steel, the hardness and structural strength of the protective cover are very high, and a plurality of hole structures are formed on the protective cover, each hole structure needs to be provided with a hole sealing groove, and the size of the hole sealing groove is smaller due to the smaller size of the hole structure.
The hole sealing groove is small in size, the hardness and the structural strength of the protection cover are high, and the requirement for machining size precision is high, so that the machining difficulty of the hole sealing groove is very high.
Disclosure of Invention
Problem (A)
In summary, since the conventional slot cutter is not suitable for machining a hole sealing slot (annular slot structure), it is desirable to provide a cutter suitable for machining a small-sized hole sealing slot.
(II) technical scheme
The invention provides a method for modifying a milling cutter tool, which comprises the following steps:
step one, selecting a milling cutter according to the diameter size of the excircle of a target slotted hole, wherein the selection conditions of the milling cutter are as follows: when the milling cutter rotates around the axis of the milling cutter, the diameter size of the excircle of a circular processing area formed by the rotating track of the cutting edge of the milling cutter is larger than that of the excircle of the target slotted hole;
and secondly, modifying and processing the milling cutter in a linear cutting mode, so that when the milling cutter rotates around the axis of the milling cutter, the excircle diameter of a circular processing area formed by the rotation track of the cutting edge of the milling cutter is equal to the excircle diameter of the target slotted hole.
Preferably, in the method for modifying a milling cutter tool provided by the present invention, in the step one, the target slot hole is an annular hole; the milling cutter at least comprises an inner cutting edge and an outer cutting edge, a processing area formed by the rotation track of the cutting edges of the milling cutter is an annular area, and the diameter size of the inner circle of the annular area is smaller than that of the inner circle of the target slotted hole.
Preferably, in the method for modifying a milling cutter tool provided by the present invention, in the first step, the outer diameter of the annular machining region formed by the rotation trajectory of the cutting edge of the milling cutter tool is larger than the outer diameter of the target slot hole, and the difference D between the two diameters is larger than the outer diameter of the target slot hole 1 Satisfies the following conditions: d 1 ∈[3mm,5mm]。
Preferably, in the method for modifying a milling cutter tool provided by the present invention, in the first step, the inner circle diameter of the annular machining region formed by the rotation path of the cutting edge of the milling cutter is smaller than the inner circle diameter of the target slot hole, and the difference D between the two diameters is smaller than the inner circle diameter of the target slot hole 2 Satisfies the following conditions: d 2 ∈[3mm,5mm]。
Preferably, in the method for reconstructing the milling cutter and the cutter provided by the invention, an axially protruding cutter head is arranged on the outer edge of the top end of the milling cutter; adopt the mode of wire-electrode cutting to right milling cutter reforms transform processing includes: modifying the cutter head in a linear cutting mode to enable the cutter head to form a polygonal pyramid structure; and cutting the transformed cutter head to form a cutting edge, and machining the cutting edge in a linear cutting mode.
Preferably, in the method for reconstructing a milling cutter tool provided by the present invention, the cutting the reconstructed tool bit includes: and along the circumferential direction of the milling cutter, the cutter head is made to form a structure which is obliquely inclined backwards along the circumferential direction of the milling cutter through controlling the cutting amount of the front surface and the rear surface of the cutter head.
Preferably, in the method for modifying a milling cutter tool provided by the present invention, the method further comprises: and step three, machining a cutter body groove on the outer side surface of the milling cutter along the axial direction of the milling cutter, wherein the cutter body groove is of a spiral line groove structure, and the rotating angle of the cutter body groove does not exceed 90 degrees.
Preferably, in the method for reconstructing a milling cutter and a cutting tool according to the present invention, in the third step, two cutter body grooves are machined on an outer side surface of the milling cutter, wherein the two cutter body grooves are axisymmetrically arranged on the outer side surface of the milling cutter.
Preferably, in the method for modifying a milling cutter tool provided by the present invention, the cutting head is disposed between two of the tool body grooves.
(III) advantageous effects
The invention provides a method for modifying a milling cutter tool, which comprises the following steps: step one, selecting a milling cutter according to the diameter size of the excircle of a target slotted hole, wherein the selection conditions of the milling cutter are as follows: when the milling cutter rotates around the axis of the milling cutter, the excircle diameter of a circular processing area formed by the rotation track of the cutting edge of the milling cutter is larger than that of a target slotted hole; and step two, the milling cutter is reformed and processed in a linear cutting mode, so that when the milling cutter rotates around the axis of the milling cutter, the excircle diameter of a circular processing area formed by the rotation track of the cutting edge of the milling cutter is equal to the excircle diameter of the target slotted hole.
Through the structural design, the method for transforming the milling cutter tool provided by the invention is characterized in that the tool bit is arranged on the end surface of the tool body, and the slotted hole structure of a workpiece is machined through the tool bit in a rotary machining mode. The method for reconstructing the milling cutter tool provided by the invention has simple implementation steps, and the finished slotting tool has reasonable structural design and is suitable for processing circular hole-shaped or circular slot hole structures.
Drawings
Fig. 1 is a schematic view showing the structure of a slotting cutter machined by a method of modifying a milling cutter tool according to an embodiment of the present invention.
In fig. 1, the correspondence between the component names and the reference numerals is:
the milling cutter comprises a cutter body 1, a cutter head 2, a cutting edge 3 and a cutter body groove 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In addition, in the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, which are merely for convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected" and "connected" used herein should be interpreted broadly, and may include, for example, a fixed connection or a detachable connection; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
Referring to fig. 1, fig. 1 is a schematic view illustrating a structure of a slotting cutter machined by a method for modifying a milling cutter tool according to an embodiment of the present invention.
The invention provides a method for reforming a milling cutter tool, which takes a milling cutter as a base material and obtains a slotting cutter tool suitable for slot processing operation by improving and optimizing the structure of the selected milling cutter.
The method for reforming the milling cutter tool comprises the following two specific steps: selecting a milling cutter as a base material for machining according to the excircle diameter of a target slotted hole, wherein the excircle diameter of a circular machining area formed by the rotation track of a cutting edge of the milling cutter is larger than that of the target slotted hole when the milling cutter rotates around the axis (the axis of a selected milling cutter body); and step two, modifying and processing the milling cutter in a linear cutting mode, so that the excircle diameter of a circular processing area formed by the rotation track of the cutting edge of the milling cutter is equal to the excircle diameter of the target slotted hole when the milling cutter rotates around the axis of the milling cutter.
In the first step, the milling cutter is selected according to the shape, structure and size of the target slot (the target slot is the slot to be processed). The milling cutter should be selected to satisfy the following conditions: the milling cutter is provided with the cutting edge 3, when the milling cutter rotates around the axis (the axis of the cutter body 1 of the milling cutter), the rotating track of the cutting edge on the milling cutter can form a processing area (the cutting edge 3 is used as a bus, when the milling cutter rotates, the area formed by the moving track of the cutting edge 3 is the processing area), the circular processing area refers to the circular cross section of the processing area (the cross section of the processing area is the moving track of a certain point on the cutting edge 3, the rotating track of a certain point on the cutting edge 3 around the axis of the cutter body 1 of the milling cutter is circular), and the excircle diameter size of the circular processing area formed by the rotating track of the cutting edge of the milling cutter is larger than that of a target slotted hole, so that the milling cutter has certain processing allowance, and the processing operation of the second step is carried out.
In the second step, the milling cutter is selected, and then the structure of the milling cutter is improved. The invention adopts a linear cutting processing mode to modify and process the cutting edge 3 of the milling cutter, so that the excircle diameter of a circular processing area formed by the rotation track of the cutting edge of the milling cutter is equal to the excircle diameter of a target slotted hole when the milling cutter rotates around the axis of the milling cutter, and the modified milling cutter (namely, a slotting cutter) can be used for processing the slotted hole.
Further, in the first step, the target slot is an annular hole, the milling cutter includes at least two inner and outer blades 3, a processing area formed by rotation tracks of the two blades is an annular area (the rotation track of the inner blade 3 forms an inner side surface of the annular area, the rotation track of the outer blade 3 forms an outer side surface of the annular area), and the inner circle diameter of the annular area is smaller than that of the target slot.
In the present invention, the target slot may be classified into two types, one is a through-hole structure and one is a ring-shaped slot structure. The through hole structure refers to a circular hole (no structure in the circular hole), and the annular groove hole structure (mainly an annular groove structure) refers to that the groove hole structure is annular and has an inner circle and an outer circle, and the part between the inner circle and the outer circle does not have any structure.
When the through hole structure is machined, the groove cutter (namely the improved milling cutter) is used for machining, the groove cutter is fixed by a machine tool through a three-jaw chuck and driven to rotate, the cutting edge 3 of the groove cutter is optimized according to the improvement of the second step of the invention, the formed machining area is consistent with the through hole structure to be machined, the groove cutter is in contact with the surface of the part to be machined (the groove cutter is in a rotating state), and then the machine tool applies axial pressure to the groove cutter to machine the required circular hole structure on the surface of the part to be machined at one time through the groove cutter.
When the annular slotted hole structure is machined, the slotting cutter provided by the invention is used for machining, the slotting cutter is fixed by a machine tool through a three-jaw chuck and is driven to rotate, the cutting edges 3 of the slotting cutter are improved and optimized according to the second step of the invention, the cutting edges 3 are arranged on the inner side and the outer side of the slotting cutter head 2, so that a machining area (annular area) formed by the rotation of the slotting cutter is consistent with the slotted hole structure to be machined, the slotting cutter is in contact with the surface of a part to be machined (the slotting cutter is in a rotating state), and then the machine tool applies axial pressure to the slotting cutter to machine the required annular slotted hole structure on the surface of the part to be machined at one time.
Because the size of the structure processed by the milling cutter is small (the measurement unit is in millimeter level), generally several to dozens of millimeters, when the milling cutter is selected, the excircle diameter of the circular processing area formed by the rotation track of the cutting edge of the milling cutter is larger than that of the target slotted hole, and the difference D between the two diameters 1 Satisfies the following conditions: d 1 ∈[3mm,5mm]. In addition, in the step one, the target slot hole is an annular hole, a processing area formed by the rotation track of the cutting edge of the milling cutter is an annular area, the inner circle diameter size of the annular area is smaller than that of the target slot hole, and the difference D of the two diameters 2 Satisfies the following conditions: d 2 ∈[3mm,5mm]。
In the structural design, the machining allowance of 3mm-5mm is reserved, so that the machining precision can be ensured, the operation difficulty of the second step can be effectively reduced, and the workload of transformation machining can be reduced.
When the groove structure is processed, the target groove has a certain depth, and the groove cutter needs to be pushed to the surface of the processed part by the corresponding depth. For the milling cutter (the cutter needing to be structurally improved), the top end of the milling cutter is provided with the cutter head 2, specifically, in the second step, the cutter head 2 protruding axially is arranged at the outer edge part of the top end of the milling cutter, and the cutter head 2 is modified in a line cutting mode to form a multi-pyramid structure. The overall height of the cutter head 2 is greater than the depth of a target slotted hole, the cutter head 2 adopts the cutter head 2 with a polygonal pyramid structure, each edge of the cutter head 2 is provided with a cutting edge 3, and the minimum distance between the cutting edge 3 on the inner side of the cutter head 2 and the cutting edge 3 on the outer side of the cutter head 2 must be smaller than the diameter of the target slotted hole.
The invention optimizes the structure of the upper cutter head 2 of the milling cutter: the cutter head 2 is inclined rearward in the circumferential direction of the milling cutter in the rotational direction during milling. Thus, the whole blade 3 forms a 'cutting' processing mode for the processed part, and the smoothness degree of groove cutter processing can be improved.
Further, in a preferred embodiment of the present invention, the inner cutting edge 3 of the cutting insert 2 is a linear cutting edge 3, the plane of the inner cutting edge 3 of the cutting insert 2 is parallel to the axis of the milling cutter, the outer cutting edge 3 of the cutting insert 2 is a linear cutting edge 3 or a smooth curved cutting edge 3, and the outer cutting edge 3 of the cutting insert 2 is inclined toward the axis of the milling cutter, so that the cutting insert 2 can form a structure of an approximate right trapezoid on the end surface of the milling cutter body. The maximum distance between the inner blade 3 of the tip 2 and the outer blade 3 of the tip 2 is equal to the diameter of the target slot (the maximum distance between the inner blade 3 of the tip 2 and the outer blade 3 of the tip 2 is not smaller than the diameter of the target slot but may be larger than the diameter of the target slot). Based on the above structure design, when machining, only the inner circle of the slotted hole is processed by aligning the cutting edge 3 on the inner side of the cutter head 2, thereby not only effectively improving the machining precision, but also greatly simplifying the machining difficulty.
In order to facilitate timely discharge of cutting chips generated during machining (if the cutting chips are not discharged, subsequent machining quality is affected), the cutter body groove 4 is machined in the outer side surface of the milling cutter along the axial direction of the milling cutter, the cutter body groove 4 is of a spiral line structure, and the rotating angle of the cutter body groove 4 is not more than 90 degrees. For one cutter body groove 4, the cutter body groove 4 penetrates the entire milling cutter body in the surface of the milling cutter body in the axial direction of the milling cutter body, and the rotation angle of the cutter body groove 4 in the surface of the milling cutter body does not exceed 90 °.
Furthermore, two cutter body grooves 4 are formed, and the two cutter body grooves 4 are arranged on the outer side surface of the milling cutter in an axisymmetric mode. Of course, in other embodiments of the present invention, the cutter body slots 4 may be provided in three or four.
Further, the cutter head 2 is disposed between the two cutter body grooves 4.
The invention provides a method for modifying a milling cutter tool, which is characterized in that a milling cutter is used as a base material, and the structure of the milling cutter tool is improved and optimized, so that a slot cutter capable of processing a slot structure can be formed.
Specifically, the method for modifying the milling cutter tool provided by the invention comprises the following steps: selecting a milling cutter according to the excircle diameter of a target slotted hole, wherein when the milling cutter rotates around the axis of the milling cutter, the excircle diameter of a circular processing area formed by the rotation track of a cutting edge of the milling cutter is larger than the excircle diameter of the target slotted hole; and step two, the cutting edge 3 of the milling cutter is reformed and processed in a linear cutting mode, so that the excircle diameter of a circular processing area formed by the rotation track of the cutting edge of the milling cutter is equal to the excircle diameter of the target slotted hole when the milling cutter rotates around the axis of the milling cutter.
Through the structural design, the method for transforming the milling cutter tool provided by the invention is characterized in that the tool bit 2 is arranged on the end surface of the tool body, and the tool bit 2 is used for machining the slotted hole structure of a workpiece in a rotating machining mode. The method for modifying the milling cutter tool provided by the invention has simple implementation steps, and the finished grooving tool has reasonable structural design and is suitable for processing circular hole-shaped or circular groove hole structures.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (7)
1. A method of modifying a milling cutter tool, comprising:
step one, selecting a milling cutter according to the diameter size of the excircle of a target slotted hole, wherein the selection conditions of the milling cutter are as follows: when the milling cutter rotates around the axis of the milling cutter, the diameter size of the excircle of a circular processing area formed by the rotation track of the cutting edge of the milling cutter is larger than that of the excircle of the target slotted hole; the target slotted hole is an annular hole; the milling cutter at least comprises an inner cutting edge and an outer cutting edge, a processing area formed by the rotation track of the cutting edges of the milling cutter is an annular area, and the diameter size of the inner circle of the annular area is smaller than that of the inner circle of the target slotted hole;
secondly, the milling cutter is reformed and processed in a linear cutting mode, so that when the milling cutter rotates around the axis of the milling cutter, the excircle diameter of a circular processing area formed by the rotating track of the cutting edge of the milling cutter is equal to the excircle diameter of the target slotted hole;
the outer edge of the top end of the milling cutter is provided with a cutter head protruding axially; adopt the mode of linear cutting to right milling cutter reforms transform processing includes: modifying the cutter head in a wire cutting mode to enable the cutter head to form a polygonal pyramid structure; and cutting the transformed cutter head to form a cutting edge, and processing the cutting edge in a wire cutting mode.
2. The milling cutter tool reforming method according to claim 1,
in the first step, the excircle diameter of the annular processing area formed by the rotation track of the cutting edge of the milling cutter is larger than that of the target slotted hole, and the difference D between the two diameters 1 Satisfies the following conditions: d 1 ∈[3mm,5mm]。
3. The milling cutter tool reforming method according to claim 2,
in the first step, the inner circle diameter of an annular processing area formed by the rotation track of the cutting edge of the milling cutter is smaller than the inner circle diameter of the target slotted hole, and the difference D of the two diameters 2 Satisfies the following conditions: d 2 ∈[3mm,5mm]。
4. The milling cutter tool reforming method according to claim 1,
the cutting of the modified tool bit comprises: and along the circumferential direction of the milling cutter, the cutter head is made to form a structure which is inclined backwards along the circumferential direction of the milling cutter by controlling the cutting amount of the front surface and the rear surface of the cutter head.
5. The milling cutter tool reforming method according to claim 1,
further comprising: and step three, machining a cutter body groove on the outer side surface of the milling cutter along the axial direction of the milling cutter, wherein the cutter body groove is of a spiral line groove structure, and the rotating angle of the cutter body groove does not exceed 90 degrees.
6. The milling cutter tool reforming method according to claim 5,
in the third step, two cutter body grooves are processed on the outer side surface of the milling cutter, wherein the two cutter body grooves are arranged on the outer side surface of the milling cutter in an axisymmetric manner.
7. The milling cutter tool reforming method according to claim 6,
the tool bit sets up in two between the cutter body groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111382844.3A CN114042977B (en) | 2021-11-19 | 2021-11-19 | Method for reforming milling cutter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111382844.3A CN114042977B (en) | 2021-11-19 | 2021-11-19 | Method for reforming milling cutter |
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| CN114042977A CN114042977A (en) | 2022-02-15 |
| CN114042977B true CN114042977B (en) | 2023-01-24 |
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Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201172121Y (en) * | 2008-02-01 | 2008-12-31 | 汉台科技股份有限公司 | Direct recovery structure of milling cutter |
| DE102011082053A1 (en) * | 2011-09-02 | 2013-03-07 | Siemens Aktiengesellschaft | Method and device for producing an axial annular groove in a workpiece |
| CN203371101U (en) * | 2013-07-24 | 2014-01-01 | 凌云工业股份有限公司 | Forming milling cutter for machining inverted cone annular groove of end face |
| CN203664715U (en) * | 2014-01-10 | 2014-06-25 | 隆英（上海）企业有限公司 | Improved grooving tool |
| CN104625121A (en) * | 2015-01-20 | 2015-05-20 | 铜陵市三圆特种铸造有限责任公司 | Ring groove knife for machining through hole and method for machining through hole |
| CN105290481A (en) * | 2015-03-15 | 2016-02-03 | 洛阳辰祥机械科技有限公司 | High-strength silicon nitride ceramic annular milling cutter |
| CN206065512U (en) * | 2016-08-31 | 2017-04-05 | 中国航天科技集团公司烽火机械厂 | A kind of helical deep hole annular groove knife |
| CN206795230U (en) * | 2017-05-24 | 2017-12-26 | 河南一工专用刀具有限公司 | A kind of annular chamfering bit milling cutter |
| CN107081461A (en) * | 2017-06-08 | 2017-08-22 | 昆山伟吉电子有限公司 | Milling cutter changes the method and UC groove knives of groove knife |
| CN110587712A (en) * | 2019-10-10 | 2019-12-20 | 广东鼎泰高科精工科技有限公司 | Recyclable groove cutter and recycling method thereof |
| CN110722201A (en) * | 2019-10-30 | 2020-01-24 | 深圳市誉和钻石工具有限公司 | Glasses milling cutter |
| CN211709713U (en) * | 2019-12-30 | 2020-10-20 | 佛山市利长机电有限公司 | Be used for rostone slotting tool |
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