CN109663937B - Inner hole end face groove processing cutter - Google Patents
Inner hole end face groove processing cutter Download PDFInfo
- Publication number
- CN109663937B CN109663937B CN201910160756.5A CN201910160756A CN109663937B CN 109663937 B CN109663937 B CN 109663937B CN 201910160756 A CN201910160756 A CN 201910160756A CN 109663937 B CN109663937 B CN 109663937B
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- blade
- positioning surface
- rotary positioning
- main body
- cutter bar
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Classifications
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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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- 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
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
- B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
- B23B27/1614—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with plate-like cutting inserts of special shape clamped against the walls of the recess in the shank by a clamping member acting upon the wall of a hole in the insert
- B23B27/1622—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with plate-like cutting inserts of special shape clamped against the walls of the recess in the shank by a clamping member acting upon the wall of a hole in the insert characterised by having a special shape
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
- Milling Processes (AREA)
Abstract
The invention discloses a tool for machining an end face groove of an inner hole, and relates to the field of machining tools. A tool for machining an end face groove of an inner hole, which is advantageous in reducing the size. The cutter comprises a cutter bar and a blade; the front end of the cutter bar is provided with a mounting concave part; the blade comprises a blade body and a cutting part connected with the blade body, the blade body is positioned in the mounting concave part, and the blade body is connected with the cutter bar; the cutting edge of the cutting part is arranged along the thickness direction of the blade body, and the blade body is connected with the cutter bar through a fastener arranged along the thickness direction of the blade body; the blade main body is provided with a first rotary positioning surface and a second rotary positioning surface which are attached to the cutter bar and limit the rotation of the blade; the first rotary positioning surface is positioned below the center of the fastener and is spaced from the lower edge of the blade body; the front part of the first rotary positioning surface limits the forward rotation of the blade, and the rear part limits the reverse rotation of the blade; the second rotational orientation surface is located rearwardly and upwardly of the center of the fastener and limits forward rotation of the blade.
Description
Technical Field
The invention relates to the field of machining tools, in particular to a tool for machining an end face groove of an inner hole.
Background
As shown in fig. 10, the inner hole end surface groove refers to an annular groove on the bottom of the inner hole. A common inner hole end face groove machining cutter is shown in fig. 1 and 2, and comprises a cutter bar and a cutter blade; the front end of the cutter bar is provided with a mounting concave part; the blade includes the blade main part and the cutting part of being connected with the blade main part, and the blade main part is located the installation concave part, and the blade main part is connected with the cutter arbor, and the interior surface of blade main part is laminated with the bottom surface of installation concave part. The blade is connected with the cutter bar in a specific form that a pressing structure is connected beside the blade on the cutter bar, and the pressing structure presses the blade. The blade adopts a flat blade, and the cutting edge of the cutting part is parallel to the blade body.
The defects of the inner hole end face groove processing cutter are that: 1. the cutter bar is connected with a compressing structure beside the blade, and the compressing structure compresses the blade; because the space on the cutter arbor has been taken up to the clamp structure for the cutter arbor needs the coarser that sets up, and the blade sets up to be less simultaneously, and this kind of flush mounting cutter is owing to dodge the ring channel cell wall, and blade cutting edge material gets rid of more, does not have the space to set up the support on the cutter arbor yet, and consequently the cutting edge is weaker. The blade strength is low. When the inner hole to be used is smaller, the blade is smaller and lower in strength, and meanwhile, the cutter bar is thicker and cannot enter the inner hole, so that the inner hole end face groove machining cutter is difficult to be applied to occasions with smaller inner holes. In addition, the compression structure of the inner hole end face groove processing cutter is also complex. 2. When the cutter works, the stress of the cutting part is perpendicular to the main body of the cutter, namely, the arrow direction shown in fig. 2, and the cutter has poor capability of bearing the cutting force because the end part of the cutter bar cuts off a part to form a mounting concave part; the cutter bar is required to be thicker in order to ensure the strength, so that the cutter for machining the end face groove of the inner hole is difficult to apply to occasions with smaller inner holes.
Disclosure of Invention
The invention aims to solve the technical problems that: a tool for machining an end face groove of an inner hole, which is advantageous in reducing the size.
The technical scheme adopted for solving the problems is as follows: the inner hole end face groove processing cutter comprises a cutter bar and a cutter blade; the front end of the cutter bar is provided with a mounting concave part; the blade comprises a blade body and a cutting part connected with the blade body, the blade body is positioned in the mounting concave part, the blade body is connected with the cutter bar, and the inner surface of the blade body is attached to the bottom surface of the mounting concave part; the cutting edge of the cutting part is arranged along the thickness direction of the blade body, and the blade body is connected with the cutter bar through a fastener arranged along the thickness direction of the blade body; the blade main body is provided with a first rotary positioning surface and a second rotary positioning surface, and the first rotary positioning surface and the second rotary positioning surface are attached to the cutter bar so as to limit the rotation of the blade; the first rotary positioning surface is positioned below the center of the fastener and is spaced from the lower edge of the blade body, the front part of the first rotary positioning surface is jointed with the cutter bar to limit the forward rotation of the blade when the blade bears cutting stress, and the rear part of the first rotary positioning surface is jointed with the cutter bar to limit the reverse rotation of the blade; the second rotary locating surface is located at the rear upper side of the center of the fastener, and the second rotary locating surface is attached to the cutter bar to limit forward rotation of the cutter blade.
Preferably, it is: the inner side of the blade body is in a step shape with the upper part higher than the lower part, and a transition surface of the inner side of the blade body from the high position to the low position is a first rotary positioning surface; a portion of the outer contoured surface of the blade body forms a second rotational orientation surface.
Preferably, it is: the first rotary positioning surface and the second rotary positioning surface are both plane surfaces.
Preferably, it is: the length direction of the first rotary positioning surface is the same as the length direction of the blade.
Preferably, it is: the included angle between the first rotary positioning surface and the inner surface of the blade body is an acute angle.
Preferably, it is: the included angle between the second rotary positioning surface and the inner surface of the blade body is an acute angle.
Preferably, it is: the outer surface of the blade body is an arc-shaped surface.
Preferably, it is: the blade main body is provided with a fastening unthreaded hole, the cutter bar is provided with a fastening threaded hole, and the fastening threaded hole is a through hole; the fastener passes through the fastening unthreaded hole and is connected with the fastening threaded hole, and the fastener compresses the blade main body on the cutter bar; the end of the fastener shank is provided with a wrench adaptor hole.
The beneficial effects of the invention are as follows: 1. although the front end of the cutter bar is provided with a mounting concave part, the cutter blade main body fills the mounting concave part and bears bending moment together with the cutter bar, so that the cutter has high structural strength; the stress direction of the cutter is parallel to the mounting concave part and is in the same direction with the width direction of the blade, and the strength of the cutter bar in the direction are high; due to the high strength of the cutter, the cutter size is reduced, so that the cutter can be applied to smaller inner holes.
2. In the prior art, many other rotary locating surfaces of the insert, which involve rotary locating surfaces, are formed by the outer contoured surfaces of the tool. The invention moves the first rotary positioning surface inwards, and a distance is reserved between the first rotary positioning surface and the lower edge of the blade main body. This arrangement can increase the size of the lower support portion of the tool bar (i.e., portion a in fig. 4) without reducing the size of the blade, thereby increasing the strength of the portion and avoiding crushing of the portion. Also, due to the improved structural strength, the cutter size is reduced, thereby enabling the cutter to be applied to smaller bores.
3. According to the fastener disclosed by the invention, the fixed blade of the fastener is prevented from moving, and the first rotary positioning surface and the second rotary positioning surface are both attached to the cutter bar so as to limit the rotation of the blade, so that the movement of the blade is completely limited, and the blade is reliably fixed. The first positioning surface and the second positioning surface can limit the forward rotation of the blade, and the blade can still be effectively fixed when bearing large cutting force. In order to fasten the additionally arranged parts, only one fastener is needed, and the fastening mode is simple. The fastening structure does not occupy the external space of the blade, which is beneficial to increasing the size of the blade and reducing the size of the cutter bar.
Description of the drawings:
FIG. 1 is a view of a prior art tool for machining an end face groove of an inner bore;
FIG. 2 is another view of a prior art tool for machining an end face groove of an inner bore;
FIG. 3 is a three-dimensional block diagram of the tool for machining an end face groove of an inner bore of the present invention;
FIG. 4 is a front view of the present invention's tool for machining an end face groove of an inner bore (the first rotationally oriented face being oriented in the same direction as the length of the insert);
FIG. 5 is a front view of the present invention's tool for machining an end face groove of an inner bore (high back to low front of a first rotary locating surface);
FIG. 6 is a front view of the present invention's tool for machining an end face groove of an inner bore (the first rotary positioning face being low in front and high in back);
FIG. 7 is a left side view of the present invention's tool for machining a slot in an end face of an inner bore (the first rotationally oriented face being perpendicular to the inner face of the insert body);
FIG. 8 is a left side view of the present invention's tool for machining grooves in the end surface of an inner bore (the first rotationally oriented surface being at an acute angle to the inner side of the body of the insert);
FIG. 9 is a cross-sectional view of the female end face slot-machining tool of the present invention at a fastener;
FIG. 10 is a diagram showing the working state of the inner hole end face groove processing cutter of the present invention;
marked in the figure as: the tool holder 1, the mounting recess 11, the fastening screw hole 12, the insert 2, the insert body 21, the first rotational positioning surface 211, the second rotational positioning surface 212, the fastening light hole 213, the cutting portion 22, the cutting edge 221, the fastener 3, the wrench adapting hole 31, the inner hole 4, and the end surface groove 5.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description.
The tool direction according to the invention is first described here as follows: the side of the blade 2 close to the cutter bar 1 is the inner side of the blade 2; and vice versa is the outer side of the blade 2. The end of the cutter near the cutting portion 22, i.e., the left end shown in fig. 4, is the front end of the cutter; otherwise, the rear end of the cutter is the rear end of the cutter; the upper part shown in fig. 4 is the upper part of the cutter; otherwise, the lower part of the cutter is the lower part of the cutter; the front end of the blade 2 is downward, and the upward rotation of the rear end is forward rotation; and the reverse rotation is the reverse rotation.
As shown in fig. 3 to 8: the inner hole end face groove processing cutter comprises a cutter bar 1 and a blade 2; the front end of the cutter bar 1 is provided with an installation concave part 11; the blade 2 comprises a blade body 21 and a cutting part 22 connected with the blade body 21, the blade body 21 is positioned in the mounting concave part 11, the blade body 21 is connected with the cutter bar 1, and the inner surface of the blade body 21 is attached to the bottom surface of the mounting concave part 11; the cutting edge 221 of the cutting portion 22 is provided in the thickness direction of the blade body 21, and the blade body 21 is connected to the tool holder 1 by the fastener 3 provided in the thickness direction of the blade body 21; the blade main body 21 is provided with a first rotary positioning surface 211 and a second rotary positioning surface 212, and the first rotary positioning surface 211 and the second rotary positioning surface 212 are attached to the cutter bar 1 so as to limit the rotation of the blade 2; the first rotary positioning surface 211 is positioned below the center of the fastener 3 and is spaced from the lower edge of the blade main body 21, the front part of the first rotary positioning surface 211 is jointed with the cutter bar 1 to limit the forward rotation of the blade 2 when the blade 2 bears cutting stress, and the rear part of the first rotary positioning surface 211 is jointed with the cutter bar 1 to limit the reverse rotation of the blade 2; the second rotational positioning surface 212 is located at the rear upper side of the center of the fastener 3, and the second rotational positioning surface 212 is attached to the tool holder 1 to restrict the forward rotation of the insert 2.
The fastener 3 of the present invention can restrict translation of the blade 2 after connecting the blade holder 1 and the blade 2, but cannot restrict rotation of the blade 2, so that the first rotation positioning surface 211 and the second rotation positioning surface 212 are required to be attached to the blade holder 1 to restrict rotation of the blade 2.
The first rotational positioning surface 211 and the second rotational positioning surface 212 may be curved surfaces, but it is apparent that the curved surfaces are more difficult to process, so the first rotational positioning surface 211 and the second rotational positioning surface 212 are preferably planar.
The first rotary positioning surface 211 is positioned below the center of the fastener 3 and is spaced from the lower edge of the blade main body 21, the front part of the first rotary positioning surface 211 is attached to the cutter bar 1 so as to limit the forward rotation of the blade 2 when the blade 2 is subjected to cutting stress, and the rear part of the first rotary positioning surface 211 is attached to the cutter bar 1 so as to limit the reverse rotation of the blade 2; the second rotation positioning surface 212 is located at the rear upper side of the center of the fastener 3, and the second rotation positioning surface 212 is attached to the tool holder 1 to limit the forward rotation of the insert 2, which is a limitation of the arrangement positions and directions of the first rotation positioning surface 211 and the second rotation positioning surface 212. Taking fig. 4 and the second rotary positioning surface 212 as an example, assuming that the front-back direction of the tool is the x axis, the up-down direction of the tool is the y axis, the second rotary positioning surface 212 and the point on the extension surface thereof, where the x value is the same as that of the center of the fastener 3, are located above the center of the fastener 3, and then the second rotary positioning surface 212 is located above the center of the fastener 3. The second rotational positioning surface 212 and its extension are located at a point behind the center of the fastener 3 where the y-value is the same as the center of the fastener 3, and the second rotational positioning surface 212 is then located behind the center of the fastener 3. The second rotational positioning surface 212 being located rearward and upward of the center of the fastener 3 means that the second rotational positioning surface 212 is located both rearward of the center of the fastener 3 and upward of the center of the fastener 3.
The first rotational positioning surface 211 and the second rotational positioning surface 212 are preferably formed as follows: the inner side of the blade body 21 is in a step shape with the upper part being higher and the lower part being lower, and the transition surface of the inner side of the blade body 21 from the high position to the low position is a first rotary positioning surface 211; a portion of the outer contoured surface of the blade body 21 forms a second rotational orientation surface 212.
As shown in fig. 4 to 6: the length direction of the first rotation positioning surface 211 may be the same as the length direction of the blade 2, or may be higher in front and lower in back or higher in front.
As shown in fig. 7 and 8: the first and second rotational positioning surfaces 211 and 212 may be at right angles or at an acute angle to the inner surface of the insert body 21. When the angle is acute, the first rotation positioning surface 211 and the second rotation positioning surface 212 are attached to the cutter bar 1 and also have the inward force to the cutter blade 2, so that the fixing effect of the cutter blade 2 is further improved; but has the disadvantage of increased processing difficulty.
The outer surface of the blade body 21 is preferably arcuate. The profiling design has the advantages that the blade edge part is less in material removal and better in strength, so that interference with the inner hole groove wall can be avoided, the stress of the blade part can be uniformly dispersed, the reliability and the service life of the profiling design are further improved, and the strength of the blade 2 is further improved.
The specific manner in which the fastener 3 fixes the blade 2 and the specific structure of the fastener 3 may be as follows: the blade main body 21 is provided with a fastening unthreaded hole 213, the cutter bar 1 is provided with a fastening threaded hole 12, and the fastening threaded hole 12 is a through hole; the fastener 3 passes through the fastening light hole 213 and is connected with the fastening threaded hole 12, and the fastener 3 presses the blade body 21 against the cutter bar 1; the end of the shank of the fastener 3 is provided with a wrench adaptor hole 31. As with conventional fasteners, the head of the fastener 3 is provided with a wrench mating feature. The fastening screw hole 12 is a through hole, and a wrench fitting hole 31 is provided at an end of the shank of the fastener 3 so that the fastener 3 can be tightened from both ends of the shank 1. When the cutter is used, if the cutter blade needs to be replaced online, in some cases, the difficulty of loosening and tightening the fastener 3 from one side is high. The tightness of the fastener 3 under special conditions can be facilitated by the arrangement.
Claims (1)
1. The inner hole end face groove machining cutter comprises a cutter bar (1) and a cutter blade (2); the front end of the cutter bar (1) is provided with an installation concave part (11); the blade (2) comprises a blade main body (21) and a cutting part (22) connected with the blade main body (21), the blade main body (21) is positioned in the mounting concave part (11), the blade main body (21) is connected with the cutter bar (1), and the inner surface of the blade main body (21) is attached to the bottom surface of the mounting concave part (11); the method is characterized in that: the cutting edge (221) of the cutting part (22) is arranged along the thickness direction of the blade body (21), and the blade body (21) is connected with the cutter bar (1) through a fastener (3) arranged along the thickness direction of the blade body (21); a first rotary positioning surface (211) and a second rotary positioning surface (212) are arranged on the blade main body (21), and the first rotary positioning surface (211) and the second rotary positioning surface (212) are attached to the cutter bar (1) so as to limit the rotation of the blade (2); the first rotary positioning surface (211) is positioned below the center of the fastener (3) and is spaced from the lower edge of the blade main body (21), the front part of the first rotary positioning surface (211) is attached to the cutter bar (1) so as to limit the forward rotation of the blade (2) when the blade is subjected to cutting stress, and the rear part of the first rotary positioning surface (211) is attached to the cutter bar (1) so as to limit the reverse rotation of the blade (2); the second rotary positioning surface (212) is positioned above the rear of the center of the fastener (3), and the second rotary positioning surface (212) is attached to the cutter bar (1) to limit the forward rotation of the blade (2); the inner side of the blade main body (21) is in a step shape with the upper part being higher and the lower part being lower, and a transition surface of the inner side of the blade main body (21) from the high position to the low position is a first rotary positioning surface (211); a second rotary positioning surface (212) is formed on part of the outer contour surface of the blade main body (21);
the first rotary positioning surface (211) and the second rotary positioning surface (212) are both plane surfaces;
the length direction of the first rotary positioning surface (211) is the same as the length direction of the blade (2);
the included angle between the first rotary positioning surface (211) and the inner surface of the blade main body (21) is an acute angle;
the included angle between the second rotary positioning surface (212) and the inner surface of the blade main body (21) is an acute angle;
the outer surface of the blade main body (21) is an arc-shaped surface;
a fastening unthreaded hole (213) is formed in the blade main body (21), a fastening threaded hole (12) is formed in the cutter bar (1), and the fastening threaded hole (12) is a through hole; the fastener (3) passes through the fastening unthreaded hole (213) and is connected with the fastening threaded hole (12), and the fastener (3) compresses the blade main body (21) on the cutter bar (1); the end of the shank of the fastener (3) is provided with a wrench adapting hole (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910160756.5A CN109663937B (en) | 2019-03-04 | 2019-03-04 | Inner hole end face groove processing cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910160756.5A CN109663937B (en) | 2019-03-04 | 2019-03-04 | Inner hole end face groove processing cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109663937A CN109663937A (en) | 2019-04-23 |
| CN109663937B true CN109663937B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910160756.5A Active CN109663937B (en) | 2019-03-04 | 2019-03-04 | Inner hole end face groove processing cutter |
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| Country | Link |
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| CN (1) | CN109663937B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110744081B (en) * | 2019-11-16 | 2024-06-14 | 贵州黎阳国际制造有限公司 | Annular blind groove cutting tool and annular blind groove cutting machining method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005246485A (en) * | 2004-03-01 | 2005-09-15 | Tungaloy Corp | Throwaway cutting tool and clamping tool used for same |
| JP2015003359A (en) * | 2013-06-20 | 2015-01-08 | 有限会社大谷鉄工所 | Cutting insert and attachment structure for cutting insert |
| CN206882940U (en) * | 2017-06-14 | 2018-01-16 | 成都道勤数控刀具有限公司 | Internal thread machining cutter |
| CN108817427A (en) * | 2018-06-29 | 2018-11-16 | 中原内配集团鼎锐科技有限公司 | A kind of high-efficiency high-accuracy NC cutting tool hole boring cutter rod |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103974791B (en) * | 2011-11-30 | 2016-08-24 | 株式会社钨钛合金 | Bit replacing formula cutting element and cutting tip |
-
2019
- 2019-03-04 CN CN201910160756.5A patent/CN109663937B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005246485A (en) * | 2004-03-01 | 2005-09-15 | Tungaloy Corp | Throwaway cutting tool and clamping tool used for same |
| JP2015003359A (en) * | 2013-06-20 | 2015-01-08 | 有限会社大谷鉄工所 | Cutting insert and attachment structure for cutting insert |
| CN206882940U (en) * | 2017-06-14 | 2018-01-16 | 成都道勤数控刀具有限公司 | Internal thread machining cutter |
| CN108817427A (en) * | 2018-06-29 | 2018-11-16 | 中原内配集团鼎锐科技有限公司 | A kind of high-efficiency high-accuracy NC cutting tool hole boring cutter rod |
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| Publication number | Publication date |
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| CN109663937A (en) | 2019-04-23 |
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