CN111590097A - Deep hole processing cutter - Google Patents
Deep hole processing cutter Download PDFInfo
- Publication number
- CN111590097A CN111590097A CN202010579844.1A CN202010579844A CN111590097A CN 111590097 A CN111590097 A CN 111590097A CN 202010579844 A CN202010579844 A CN 202010579844A CN 111590097 A CN111590097 A CN 111590097A
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- hole
- cutter
- mounting hole
- bar
- deep
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- 238000003754 machining Methods 0.000 claims abstract description 17
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The invention discloses a deep hole processing cutter which comprises a cutter bar, a first mounting hole and a second mounting hole, wherein the first mounting hole and the second mounting hole are respectively arranged at one end of the cutter bar in a penetrating manner along the radial direction of the cutter bar; the first mounting holes and the second mounting holes are parallel to each other and are arranged at intervals along the axial direction of the cutter bar, and the lengths of the boring cutter and the supporting rod extending out of the cutter bar are the same and opposite. According to the deep hole machining cutter, the supporting rod is arranged on the cutter rod and abuts against the inner wall of a deep hole through the supporting rod, the cutter relieving problem during deep hole machining can be solved, the cylindricity precision and the parallelism precision of a boring hole are greatly improved, and meanwhile, the service life of the machining cutter is long.
Description
Technical Field
The invention relates to a deep hole machining cutter.
Background
For a multilayer board deep hole with a larger long diameter, the most common problem in rough boring processing is cutter back-off. When the tool nose is used for cutting, the tool bar is stressed due to the reaction force of the cutting force, and the length-diameter ratio of the tool bar entering the deep hole is also larger, so that the tool bar body is longer, and the tool yield phenomenon can be generated due to the fact that the cutting force of the tool nose cannot be overcome. The condition can not only cause the cutter to deform in the radial direction and damage the cutter; meanwhile, the machined deep hole has poor concentricity and has poor quality.
Disclosure of Invention
The invention aims to provide a deep hole machining cutter, which overcomes the cutter back-off problem during deep hole machining, and has the advantages of high quality of machined deep holes and long service life of machining cutters.
In order to achieve the purpose, the invention adopts the technical scheme that:
a deep hole processing cutter comprises a cutter bar, a first mounting hole and a second mounting hole which penetrate through the cutter bar along the radial direction of the cutter bar and are formed in one end of the cutter bar, a hole boring cutter which can move along the length extension direction of the cutter bar and is arranged in the first mounting hole, a supporting rod which can move along the length extension direction of the cutter bar and is arranged in the second mounting hole, a fixing mechanism for fixing the hole boring cutter and an adjusting mechanism for fixing and adjusting the length of the supporting rod extending out of the cutter bar;
the first mounting holes and the second mounting holes are parallel to each other and are arranged at intervals along the axial direction of the cutter bar, and the length of the boring cutter and the length of the supporting rod extending out of the cutter bar are the same and the extending directions are opposite.
Preferably, the cutter bar is provided with a first threaded hole communicated with the first mounting hole along a radial direction and in a direction parallel to the axial direction, and the fixing mechanism comprises a fixing bolt for abutting against the boring cutter through the first threaded hole.
More preferably, the first screw hole and the first mounting hole in the radial direction are perpendicular to each other.
More preferably, the second mounting hole and the first threaded hole in the direction parallel to the axial direction are respectively provided on both sides of the first mounting hole in the axial direction.
Preferably, the second mounting hole comprises a first hole, a second threaded hole and a second hole which are sequentially communicated along the radial direction; but adjustment mechanism includes threaded connection adjusting bolt in the second screw hole, locates in the first hole and be used for threaded connection the fixation nut of adjusting bolt one end, adjusting bolt's the other end penetrates in the second hole and can wind self axial lead direction pivoted connection on the bracing piece.
More preferably, one end of the supporting rod arranged in the cutter bar is provided with a T-shaped groove, the other end of the adjusting bolt is provided with a T-shaped connecting portion which is used for being clamped into the T-shaped groove in a matched mode, and the adjusting bolt can be arranged in the T-shaped groove in a rotating mode around the axis line direction of the adjusting bolt through the T-shaped connecting portion.
More preferably, the first hole, the second threaded hole and the second hole extend coaxially, and the first hole and the second hole each have a diameter larger than a diameter of the second threaded hole.
More preferably, the support rod and the second hole are both rectangular in cross-section.
Preferably, one end of the support rod extending out of the second mounting hole is provided with an arc-shaped bottom surface, and the axis of the arc-shaped bottom surface is parallel to the cutter bar.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: according to the deep hole machining cutter, the supporting rod is arranged on the cutter bar, so that the length of the boring cutter is the same as that of the supporting rod extending out of the cutter bar, the extending directions are opposite, the supporting rod abuts against the inner wall of a deep hole, the cutter back-off problem during deep hole machining can be solved, the cylindricity precision and the parallelism precision of a bored hole are greatly improved, and meanwhile, the service life of the machining cutter is long.
Drawings
FIG. 1 is a schematic diagram of the structure of the apparatus of the present invention;
FIG. 2 is a cross-sectional view along line AA of FIG. 1;
FIG. 3 is a partial exploded view of FIG. 2;
fig. 4 is a schematic structural view of the support rod and the boring cutter extending out of the cutter bar.
Wherein: 1. a cutter bar; 2. a first mounting hole; 3. a second mounting hole; 31. a first hole; 32. a second threaded hole; 33. a second hole; 4. a hole boring cutter; 5. a support bar; 51. a T-shaped slot; 52. an arcuate bottom surface; 6. a first threaded hole; 7. fixing the bolt; 8. adjusting the bolt; 81. a T-shaped connecting portion; 9. and (5) fixing the nut.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
Referring to fig. 1-4, the deep hole (generally, a hole with a length-diameter ratio greater than or equal to 8) machining tool includes a tool bar 1, a first mounting hole 2 and a second mounting hole 3, which are respectively penetrated through the tool bar 1 in a radial direction and are arranged at one end of the tool bar 1, a boring tool 4, which is movably arranged in the first mounting hole 2 in a length extending direction, a support rod 5, which is movably arranged in the second mounting hole 3 in the length extending direction, a fixing mechanism for fixing the boring tool 4, and an adjusting mechanism for fixing and adjusting the length of the support rod 5 extending out of the tool bar 1. The first mounting hole 2 and the second mounting hole 3 are parallel to each other and are arranged at intervals along the axial direction of the cutter bar 1, and the boring cutter 4 and the support rod 5 extend out of the cutter bar 1 for the same length and in opposite directions. When processing the deep hole, support tight deep hole inner wall through bracing piece 5, can overcome the cutter relieving problem during deep hole processing, make the cylindricity precision and the depth of parallelism precision of bore hole all improve by a wide margin, processing cutter life is longer simultaneously. According to the aperture size of the deep hole to be processed, the boring cutters 4 with different lengths can be replaced, and the extension length of the support rod 5 can be adjusted, so that the application range is wide. Referring to fig. 2, a workpiece to be machined (not shown in the figure) is located on the right side of the cutter bar 1, the second mounting hole 3 is located on the left side of the first mounting hole 2, and the hole is bored through the hole boring cutter 4, and then the deep hole is tightly abutted through the mutual matching of the hole boring cutter 4 and the support rod 5, so that the cutter back-off condition is avoided.
The cutter bar 1 is provided with first threaded holes 6 which are communicated with the first mounting holes 2 along the radial direction of the cutter bar 1 and in parallel with the axial direction of the cutter bar 1, and the fixing mechanism comprises fixing bolts 7 which are used for screwing in the first threaded holes 6 in a one-to-one correspondence manner and abutting against the boring cutters 4. In the present embodiment, the first threaded hole 6 and the first mounting hole 2 in the radial direction are perpendicular to each other. The second mounting hole 3 and the first threaded hole 6 parallel to the axial direction are respectively arranged at two sides of the first mounting hole 2 along the axial direction of the cutter bar 1. Referring to fig. 2, the second mounting hole 3 is provided on the left side of the first mounting hole 2, and the first threaded hole 6 in the direction parallel to the axial direction is provided on the right side of the first mounting hole 2.
The second mounting hole 3 includes a first hole 31, a second threaded hole 32, and a second hole 33 that are sequentially communicated in a radial direction. The adjusting mechanism comprises an adjusting bolt 8 which can be in threaded connection with the second threaded hole 32, and a fixing nut 9 which is arranged in the first hole 31 and is used for being in threaded connection with one end of the adjusting bolt 8, wherein the other end of the adjusting bolt 8 penetrates into the second hole 33 and is connected with the supporting rod 5 in a manner of rotating around the axis direction of the adjusting bolt.
Referring to fig. 3, a first hole 31 extends upward through the tool holder 1, a second hole 33 extends downward through the tool holder 1, and a fixing nut 9 is disposed in the first hole 31 for fixing the adjusting bolt 8. In the present embodiment, the first hole 31, the second threaded hole 32, and the second hole 33 extend coaxially, and the diameters of the first hole 31 and the second hole 33 are each larger than the diameter of the second threaded hole 32.
Referring to fig. 3, the upper end of the support rod 5 disposed in the cutter bar 1 is provided with a T-shaped slot 51, the lower end of the adjusting bolt 8 is provided with a T-shaped connecting portion 81 for being engaged with the T-shaped slot 51, and the adjusting bolt 8 is rotatably disposed in the T-shaped slot 51 about its axis line through the T-shaped connecting portion 81. The T-shaped slot 51 penetrates the upper end of the support rod 5 along the direction vertical to the axial lead of the adjusting bolt 8. The bottom of the T-shaped connecting portion 81 is circular. By this arrangement, the T-shaped connection 81 and the T-shaped slot 51 can be snapped into each other in the radial direction of the tool holder 1 and cannot be disengaged.
When the extension length of the supporting rod 5 needs to be adjusted, the fixing nut 9 is taken down (the upper end of the fixing nut 9 is provided with the inner hexagonal groove), the adjusting bolt 8 is rotated (the upper end of the adjusting bolt 8 is also provided with the inner hexagonal groove) until the extension length of the supporting rod 5 is consistent with the extension length of the boring cutter 4, and then the fixing nut 9 is screwed on the adjusting bolt 8.
The end of the support rod 5 extending out of the second mounting hole 3 is provided with an arc bottom surface 52, and the axis of the arc bottom surface 52 is parallel to the cutter bar 1. Through the arrangement, in the rotating process of the cutter bar 1, the supporting rod 5 is abutted against the inner wall of the deep hole through the top point of the arc-shaped bottom surface 52, so that the friction force between the supporting rod and the deep hole is greatly reduced. In the present embodiment, the cross section of the support rod 5 and the cross section of the second hole 33 are both rectangular, and by this arrangement, the support rod 5 can be further prevented from rotating around its axis line direction in the second hole 33 when the adjusting bolt 8 is rotated to adjust the extension length of the support rod 5.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (9)
1. A deep hole machining cutter is characterized in that: the boring tool comprises a tool bar, a first mounting hole and a second mounting hole which are respectively penetrated along the radial direction of the tool bar and are arranged at one end of the tool bar, a boring tool which can move along the self length extension direction and is arranged in the first mounting hole, a supporting rod which can move along the self length extension direction and is arranged in the second mounting hole, a fixing mechanism for fixing the boring tool and an adjusting mechanism for fixing and adjusting the length of the supporting rod extending out of the tool bar;
the first mounting holes and the second mounting holes are parallel to each other and are arranged at intervals along the axial direction of the cutter bar, and the length of the boring cutter and the length of the supporting rod extending out of the cutter bar are the same and the extending directions are opposite.
2. A deep-hole machining tool according to claim 1, characterized in that: the cutter bar is provided with a first threaded hole communicated with the first mounting hole along the radial direction and in a direction parallel to the axial direction, and the fixing mechanism comprises a fixing bolt for tightly abutting against the boring cutter through the first threaded hole.
3. A deep-hole machining tool according to claim 2, characterized in that: the first threaded hole and the first mounting hole in the radial direction are perpendicular to each other.
4. A deep-hole machining tool according to claim 2, characterized in that: the second mounting hole and the first threaded hole parallel to the axial direction are respectively arranged on two sides of the first mounting hole along the axial direction.
5. A deep-hole machining tool according to claim 1, characterized in that: the second mounting hole comprises a first hole, a second threaded hole and a second hole which are sequentially communicated along the radial direction; but adjustment mechanism includes threaded connection adjusting bolt in the second screw hole, locates in the first hole and be used for threaded connection the fixation nut of adjusting bolt one end, adjusting bolt's the other end penetrates in the second hole and can wind self axial lead direction pivoted connection on the bracing piece.
6. A BTA tool according to claim 5, characterized in that: the utility model discloses a cutter arbor, including the cutter arbor, bracing piece, adjusting bolt, T-shaped connecting portion, adjusting bolt passes through T-shaped connecting portion can be around self axial lead direction pivoted locate in the T-shaped groove, the bracing piece is located one end in the cutter arbor has seted up the T-shaped groove, adjusting bolt's the other end is equipped with and is used for the complex card to go into T-shaped connecting portion in the T-shaped groove.
7. A BTA tool according to claim 5, characterized in that: the first hole, the second threaded hole and the second hole extend coaxially, and the diameters of the first hole and the second hole are larger than the diameter of the second threaded hole.
8. A BTA tool according to claim 5, characterized in that: the cross sections of the supporting rod and the second hole are both rectangular.
9. A deep-hole machining tool according to claim 1, characterized in that: one end of the supporting rod, which extends out of the second mounting hole, is provided with an arc-shaped bottom surface, and the axis of the arc-shaped bottom surface is parallel to the cutter bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010579844.1A CN111590097B (en) | 2020-06-23 | 2020-06-23 | Deep hole processing cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010579844.1A CN111590097B (en) | 2020-06-23 | 2020-06-23 | Deep hole processing cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111590097A true CN111590097A (en) | 2020-08-28 |
| CN111590097B CN111590097B (en) | 2024-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010579844.1A Active CN111590097B (en) | 2020-06-23 | 2020-06-23 | Deep hole processing cutter |
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| Country | Link |
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| CN (1) | CN111590097B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112171203A (en) * | 2020-09-28 | 2021-01-05 | 中国空气动力研究与发展中心高速空气动力研究所 | Machining method of microporous spray pipe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1180164A1 (en) * | 1984-04-16 | 1985-09-23 | Ленинградский Ордена Ленина И Ордена Красного Знамени Механический Институт | Boring bar for machining deep bores |
| CN105642922A (en) * | 2014-11-13 | 2016-06-08 | 首都航天机械公司 | Deep hole boring tool |
| CN205614077U (en) * | 2016-05-16 | 2016-10-05 | 黄河科技学院 | A special lathe for BTA |
| CN212264562U (en) * | 2020-06-23 | 2021-01-01 | 张家港玉成精机股份有限公司 | Deep hole processing cutter |
-
2020
- 2020-06-23 CN CN202010579844.1A patent/CN111590097B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1180164A1 (en) * | 1984-04-16 | 1985-09-23 | Ленинградский Ордена Ленина И Ордена Красного Знамени Механический Институт | Boring bar for machining deep bores |
| CN105642922A (en) * | 2014-11-13 | 2016-06-08 | 首都航天机械公司 | Deep hole boring tool |
| CN205614077U (en) * | 2016-05-16 | 2016-10-05 | 黄河科技学院 | A special lathe for BTA |
| CN212264562U (en) * | 2020-06-23 | 2021-01-01 | 张家港玉成精机股份有限公司 | Deep hole processing cutter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112171203A (en) * | 2020-09-28 | 2021-01-05 | 中国空气动力研究与发展中心高速空气动力研究所 | Machining method of microporous spray pipe |
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| Publication number | Publication date |
|---|---|
| CN111590097B (en) | 2024-07-16 |
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