CN107984030B - Chamfering tool for central hole of engine crankshaft - Google Patents
Chamfering tool for central hole of engine crankshaft Download PDFInfo
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- CN107984030B CN107984030B CN201711457634.XA CN201711457634A CN107984030B CN 107984030 B CN107984030 B CN 107984030B CN 201711457634 A CN201711457634 A CN 201711457634A CN 107984030 B CN107984030 B CN 107984030B
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- 230000001154 acute effect Effects 0.000 claims abstract description 16
- 238000003754 machining Methods 0.000 claims abstract description 14
- 238000005498 polishing Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 6
- 230000003749 cleanliness Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
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- Mechanical Engineering (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
- Milling Processes (AREA)
Abstract
The invention provides an engine crankshaft center hole chamfering tool applied to the technical field of engine crankshaft machining auxiliary equipment, one end of a tool body (1) of the engine crankshaft center hole chamfering tool is connected with a driving motor (2), a chamfering tool (3) and a deburring tool (4) are arranged at the other end of the tool body (1), a chamfering tool blade (6) of the chamfering tool (3) is arranged to form an acute angle with a crankshaft center line (7), and a deburring tool blade (8) of the deburring tool (4) is arranged to form an acute angle with the crankshaft center line (7).
Description
Technical Field
The invention belongs to the technical field of engine crankshaft machining auxiliary equipment, and particularly relates to a chamfer machining tool for a central hole of an engine crankshaft.
Background
In the processing process of the engine crankshaft, the chamfer angles of the central holes of the crankshaft end faces at two ends of the engine crankshaft body are extremely important reference surfaces, and the reference surfaces are tightly abutted by the two taper centers and used for positioning the engine crankshaft body so as to grind and polish the main journal and the polished connecting rod journal and dynamically balance the crankshaft body, therefore, the chamfer angles of the two crankshaft end faces of the crankshaft cannot have burr conditions, if the burrs exist, the positioning accuracy of the crankshaft body is affected, and therefore, the grinding and polishing of the main journal and the polished connecting rod journal on the crankshaft body are caused, and a larger error exists in the result of the dynamic balance measurement on the crankshaft body. However, the crankshaft end face of the engine crankshaft body in the prior art is machined in a grinding mode, burrs are likely to appear in the grinding process when the crankshaft end face is ground, and the burrs are turned inwards to enter the chamfer part, so that positioning errors exist when the conical tip is attached to and tightly pressed against the central hole of the crankshaft end face, and the follow-up polishing and dynamic balance machining operation are affected, and the quality of the crankshaft body is affected.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the defects of the prior art, the engine crankshaft center hole chamfering tool has the advantages of simple structure and low cost, and can effectively remove burrs of an effective chamfer and a deburring chamfer machined in a crankshaft end face center hole, so that the surface smoothness of the deburring chamfer, especially the effective chamfer, is improved, the crankshaft body is accurately positioned when a conical tip is attached to and tightly abuts against the crankshaft end face center hole, errors are eliminated, the follow-up polishing and dynamic balance machining operation precision is improved, and the quality of the engine crankshaft body is improved.
The technical scheme adopted by the invention is as follows:
the invention relates to a chamfer machining tool for a central hole of an engine crankshaft, which comprises a tool body, wherein one end of the tool body is connected with a driving motor, the other end of the tool body is provided with a chamfer tool and a deburring tool, the tool body comprises a front end surface of the tool body, the distance between the deburring tool and the front end surface of the tool body is set to be greater than the distance between the chamfer tool and the front end surface of the tool body, the chamfer tool edge of the chamfer tool is set to be in an acute angle with the central line of the crankshaft, and the deburring tool edge of the deburring tool is set to be in an acute angle with the central line of the crankshaft.
The other end of the cutter body is provided with a cutter mounting groove I and a cutter mounting groove II, a chamfering cutter is arranged in the cutter mounting groove I, a deburring cutter is arranged in the cutter mounting groove II, and the numerical value of the acute angle between the edge of the deburring cutter and the central line of the crankshaft is set to be greater than the numerical value of the acute angle between the edge of the chamfering cutter and the central line of the crankshaft.
The deburring cutter blade of the deburring cutter comprises an inner cutter blade face and an outer cutter blade face, wherein the numerical value of an included angle between the inner cutter blade face and the central line of the crankshaft is set to be equal to the numerical value of an included angle between the chamfering cutter blade of the chamfering cutter and the central line of the crankshaft, and the numerical value of an included angle between the outer cutter blade face of the deburring cutter blade and the central line of the crankshaft is set to be greater than the numerical value of an included angle between the inner cutter blade face and the central line of the crankshaft.
When the driving motor drives the cutter body to rotate, the chamfering cutter on the cutter body is arranged to be capable of deburring the effective chamfer machined in the central hole of the end face of the crankshaft, the deburring cutter is arranged to be capable of machining the deburring chamfer in the central hole of the end face of the crankshaft, and the outer edge of the effective chamfer is combined with the inner edge of the deburring chamfer.
The effective chamfer is arranged along a circle of the center hole of the end face of the crankshaft, the deburring chamfer is arranged along a circle of the center hole of the end face of the crankshaft, the included angle value between the effective chamfer surface and the center line of the crankshaft is set to be smaller than the included angle value between the deburring chamfer surface and the center line of the crankshaft, and when the engine crankshaft body is polished and dynamically balanced, the outer surface of the cone center of the positioning engine crankshaft body is set to be in a structure capable of being contacted with the effective chamfer surface.
The driving motor is connected with a control part capable of controlling the starting and stopping of the driving motor and the rotation speed adjustment, and the driving motor is arranged to be capable of driving the cutter body to rotate.
The chamfering tool positioning bolt is screwed in the threaded hole I at the side surface of the tool mounting groove I, and the deburring tool positioning bolt is screwed in the threaded hole II at the side surface of the tool mounting groove II.
By adopting the technical scheme of the invention, the following beneficial effects can be obtained:
according to the engine crankshaft center hole chamfering tool disclosed by the invention, after the crankshaft end face center hole is machined on the engine crankshaft body through the drilling equipment, an effective chamfer is machined in the crankshaft end face center hole, then the crankshaft body is fixed, the tool body is controlled to move in place, the driving motor is controlled to drive the tool body to rotate, when the tool body rotates, the chamfering tool acts on the effective chamfer surface to machine the effective chamfer surface, burrs on the effective chamfer surface are comprehensively removed, when the chamfering tool acts, the deburring tool also rotates, the burr chamfer is machined at the outer end part of the crankshaft end face center hole, and when the burr chamfer is machined, burrs entering the chamfer part are turned inwards in the process of grinding the crankshaft end face, so that the burr is effectively removed, the effective chamfer cleanliness meets the requirements, the crankshaft body is accurately positioned when the taper center is abutted against the crankshaft end face center hole, the errors are eliminated, and the follow-up polishing and dynamic balance machining operation precision is improved. The engine crankshaft center hole chamfering tool disclosed by the invention has the advantages that the structure is simple, the cost is low, the effective chamfering and deburring chamfering processed in the crankshaft end face center hole can be effectively deburred, the deburring chamfering, especially the effective chamfering surface finish, is improved, the burrs can not influence the positioning of the conical tip to the crankshaft, the conical tip can accurately position the crankshaft body when being attached to and tightly propped against the crankshaft end face center hole, the error is eliminated, the follow-up polishing and dynamic balance processing precision is improved, and the quality of the engine crankshaft body is improved.
Drawings
The following is a brief description of what is expressed in the drawings of this specification and the references in the drawings:
FIG. 1 is a schematic diagram of a chamfer processing cutter for a central hole of an engine crankshaft;
FIG. 2 is a schematic view of a partially cut-away configuration of an engine crankshaft according to the present disclosure;
FIG. 3 is a schematic view of a partial enlarged structure of an effective chamfer and a deburring chamfer of an engine crankshaft according to the present invention;
FIG. 4 is a schematic structural view of another structure of the chamfering tool for the center hole of the engine crankshaft according to the present invention;
reference numerals are respectively: 1. a cutter body; 2. a driving motor; 3. chamfering tool; 4. a deburring tool; 5. the front end face of the cutter body; 6. chamfering tool blade; 7. a crankshaft center line; 8. a deburring cutter blade; 9. a cutter mounting groove I; 10. a cutter mounting groove II; 11. an inner knife edge surface; 12. an outer knife edge surface; 13. a center hole of the end face of the crankshaft; 14. effective chamfering; 15. deburring and chamfering; 16. an engine crankshaft body; 17. end face of the crankshaft; 18. a control part; 19. chamfering tool positioning bolts; 20. a deburring tool positioning bolt.
Detailed Description
The following describes the shape, structure, mutual position and connection relation between parts, action of parts and working principle of the specific embodiment of the present invention by describing examples in further detail:
as shown in fig. 1-3, the invention relates to a chamfering tool for a central hole of an engine crankshaft, which comprises a tool body 1, one end of the tool body 1 is connected with a driving motor 2, the other end of the tool body 1 is provided with a chamfering tool 3 and a deburring tool 4, the tool body 1 comprises a tool body front end surface 5, the distance between the deburring tool 4 and the tool body front end surface 5 is set to be greater than the distance between the chamfering tool 3 and the tool body front end surface 5, a chamfering tool blade 6 of the chamfering tool 3 is set to form an acute angle with a crankshaft center line 7, and a deburring tool blade 8 of the deburring tool 4 is set to form an acute angle with the crankshaft center line 7. According to the structure, after the crankshaft end face center hole 13 is machined on the engine crankshaft body 16 through the drilling equipment, the effective chamfer 14 is machined in the crankshaft end face center hole 13, then the engine crankshaft body 16 is fixed, the cutter body 1 is controlled to move in place, the driving motor 2 is controlled to drive the cutter body 1 to rotate, when the cutter body 1 rotates, the chamfer cutter 3 acts on the surface of the effective chamfer 14 to machine the surface of the effective chamfer 14, burrs on the surface are comprehensively removed, when the chamfer cutter 3 acts, the deburring cutter 4 also rotates, the burrs are machined at the outer end part of the crankshaft end face center hole, when the burrs are machined, the burrs entering the chamfer parts are turned inwards to be scraped, so that the burrs are effectively removed, the effective chamfer cleanliness meets the requirements, when the conical tip is attached to the crankshaft end face center hole tightly, the positioning of the crankshaft body is accurate, errors are eliminated, and the follow-up polishing and dynamic balance machining precision is improved. The engine crankshaft center hole chamfering tool is simple in structure and low in cost, can effectively remove burrs of an effective chamfer and a deburring chamfer machined in a crankshaft end face center hole, improves the surface finish of the deburring chamfer, particularly the effective chamfer, enables a conical tip to accurately position a crankshaft body when being attached and abutted against the crankshaft end face center hole, eliminates errors, and further improves the precision of subsequent polishing and dynamic balance machining operations and the quality of the engine crankshaft body.
The other end of the cutter body 1 is provided with a cutter mounting groove I9 and a cutter mounting groove II 10, a chamfering cutter 3 is arranged in the cutter mounting groove I9, a deburring cutter 4 is arranged in the cutter mounting groove II 10, and the numerical value of the acute angle included angle between the deburring cutter blade 8 and the central line 7 of the crankshaft is set to be larger than the numerical value of the acute angle included angle between the chamfering cutter blade 6 and the central line 7 of the crankshaft. Above-mentioned structure, installation chamfer cutter 3 in the cutter mounting groove I9, installation burring cutter 4 in the cutter mounting groove II 10, like this, when need to the engine crankshaft centre bore of different structures and size processing, only need change the cutter can, change convenient and fast, reduce cost. The numerical value of the acute angle between the deburring tool blade 8 and the central line 7 of the crankshaft is set to be larger than the numerical value of the acute angle between the chamfering tool blade 6 and the central line 7 of the crankshaft, so that after the deburring chamfer is machined, after the crankshaft body is positioned by the cone center, a gap exists between the deburring chamfer surface and the surface of the cone center, and even if some burrs turn into the central hole of the end face 17 of the crankshaft, the deburring chamfer can only be extended to the deburring chamfer part, and the deburring chamfer part is not directly contacted with the surface of the cone center, therefore, the burrs can not influence the reliable and accurate positioning of the crankshaft body of the engine by the cone center, and the positioning precision is improved.
As shown in fig. 4, the deburring tool blade 8 of the deburring tool 4 comprises an inner blade surface 11 and an outer blade surface 12, wherein the angle between the inner blade surface 11 and the crankshaft center line 7 is equal to the angle between the chamfering tool blade 6 of the chamfering tool 3 and the crankshaft center line 7, and the angle between the outer blade surface 12 of the deburring tool blade 8 and the crankshaft center line 7 is greater than the angle between the inner blade surface 11 and the crankshaft center line 7. As another embodiment of the invention, when the cutter body rotates, the chamfering cutter performs deburring treatment on the effective chamfering surface, the inner side edge surface performs deburring treatment again, the outer side edge surface is used for processing deburring chamfer, and burrs turned into the center hole of the end surface of the crankshaft are treated, so that the deburring cleanliness is comprehensively improved, and the follow-up operation is facilitated.
When the driving motor 2 drives the cutter body 1 to rotate, the chamfering cutter 3 on the cutter body 1 is arranged to be capable of deburring an effective chamfer 14 machined in the center hole 13 of the crankshaft end face (burrs turned inwards towards the center hole of the crankshaft end face when the crankshaft end face is ground), the deburring cutter 4 is arranged to be capable of machining a deburring chamfer 15 in the center hole 13 of the crankshaft end face, and the outer edge of the effective chamfer 14 is combined with the inner edge of the deburring chamfer 15. Above-mentioned structure, the cooperation of chamfer cutter and burring cutter, the burring operation is accomplished to disposable high efficiency, reduces the burr and fixes a position negative effect to the follow-up operation of bent axle body.
The effective chamfer 14 is arranged along the circumference of the center hole 13 of the crankshaft end face, the deburring chamfer 15 is arranged along the circumference of the center hole 13 of the crankshaft end face, the numerical value of the included angle between the surface of the effective chamfer 14 and the center line 7 of the crankshaft is set to be smaller than the numerical value of the included angle between the surface of the deburring chamfer 15 and the center line 7 of the crankshaft, and when the engine crankshaft body 16 is subjected to polishing and dynamic balance treatment, the outer surface of the conical center of the positioning engine crankshaft body 16 is set to be in a structure capable of being in contact with the surface of the effective chamfer 14. The mechanism has the advantages that the taper center can be clamped in the center of gravity hole of the end face of the crankshaft and is in contact with the effective chamfer, so that the positioning of the crankshaft body is realized, the crankshaft body can rotate, and the grinding and polishing of the main journal and the polishing of the connecting rod journal and the dynamic balance measurement of the crankshaft body are performed.
The driving motor 2 is connected with a control part 18 which can control the starting and stopping of the driving motor 2 and the rotation speed adjustment, and the driving motor 2 is arranged to be capable of driving the cutter body 1 to rotate. Above-mentioned structure, control unit can control driving motor and rotate and rotational speed is adjusted to satisfy the different demands of different bent axle body operations.
The chamfering tool positioning bolt 19 is screwed in the threaded hole I at the side surface of the tool mounting groove I9, and the deburring tool positioning bolt 20 is screwed in the threaded hole II at the side surface of the tool mounting groove II 10. Through the structure, reliable positioning is realized on the chamfering tool through the chamfering tool positioning bolt 19, movement of the chamfering tool due to stress during subsequent operation on the crankshaft body is avoided, and reliable positioning is realized on the deburring tool through the deburring tool positioning bolt 20, and movement of the chamfering tool due to stress during subsequent operation on the crankshaft body is avoided.
According to the engine crankshaft center hole chamfering tool disclosed by the invention, after the crankshaft end face center hole is machined on the engine crankshaft body through the drilling equipment, an effective chamfer is machined in the crankshaft end face center hole, then the crankshaft body is fixed, the tool body is controlled to move in place, the driving motor is controlled to drive the tool body to rotate, when the tool body rotates, the chamfering tool acts on the effective chamfer surface to machine the effective chamfer surface, burrs on the effective chamfer surface are comprehensively removed, when the chamfering tool acts, the deburring tool also rotates, the burr chamfer is machined at the outer end part of the crankshaft end face center hole, and when the burr chamfer is machined, burrs entering the chamfer part are turned inwards in the process of grinding the crankshaft end face, so that the burr is effectively removed, the effective chamfer cleanliness meets the requirements, the crankshaft body is accurately positioned when the taper center is abutted against the crankshaft end face center hole, the errors are eliminated, and the follow-up polishing and dynamic balance machining operation precision is improved. The engine crankshaft center hole chamfering tool disclosed by the invention has the advantages that the structure is simple, the cost is low, the effective chamfering and deburring chamfering processed in the crankshaft end face center hole can be effectively deburred, the deburring chamfering, especially the effective chamfering surface finish, is improved, the burrs can not influence the positioning of the conical tip to the crankshaft, the conical tip can accurately position the crankshaft body when being attached to and tightly propped against the crankshaft end face center hole, the error is eliminated, the follow-up polishing and dynamic balance processing precision is improved, and the quality of the engine crankshaft body is improved.
While the invention has been described above with reference to the accompanying drawings, it will be apparent that the specific implementation of the invention is not limited by the foregoing, but rather is within the scope of the invention as long as various modifications are made by the method concept and technical scheme of the invention, or the concept and technical scheme of the invention are directly applied to other occasions without modification.
Claims (3)
1. The utility model provides an engine crankshaft centre bore chamfer processing cutter which characterized in that: the engine crankshaft center hole chamfering tool comprises a tool body (1), one end of the tool body (1) is connected with a driving motor (2), a chamfering tool (3) and a deburring tool (4) are arranged at the other end of the tool body (1), the tool body (1) comprises a tool body front end face (5), a chamfering tool blade (6) of the chamfering tool (3) is arranged to form an acute angle with a crankshaft center line (7), and a deburring tool blade (8) of the deburring tool (4) is arranged to form an acute angle with the crankshaft center line (7);
the other end of the cutter body (1) is provided with a cutter mounting groove I (9) and a cutter mounting groove II (10), a chamfering cutter (3) is arranged in the cutter mounting groove I (9), a deburring cutter (4) is arranged in the cutter mounting groove II (10), and the numerical value of an acute angle between the deburring cutter blade (8) and the central line (7) of the crankshaft is set to be larger than the numerical value of an acute angle between the chamfering cutter blade (6) and the central line (7) of the crankshaft;
the effective chamfer (14) is arranged along the circumference of the center hole (13) of the crankshaft end face, the deburring chamfer (15) is arranged along the circumference of the center hole (13) of the crankshaft end face, the numerical value of the included angle between the surface of the effective chamfer (14) and the center line (7) of the crankshaft is set to be smaller than the numerical value of the included angle between the surface of the deburring chamfer (15) and the center line (7) of the crankshaft, and when the engine crankshaft body (16) is subjected to polishing and dynamic balance treatment, the outer surface of the cone center of the positioning engine crankshaft body (16) is set to be in a structure capable of being contacted with the surface of the effective chamfer (14);
the deburring tool blade (8) of the deburring tool (4) comprises an inner side blade surface (11) and an outer side blade surface (12), the value of an included angle between the inner side blade surface (11) and a crankshaft center line (7) is set to be the same as the value of an included angle between the chamfering tool blade (6) of the chamfering tool (3) and the crankshaft center line (7), and the value of an included angle between the outer side blade surface (12) of the deburring tool blade (8) and the crankshaft center line (7) is set to be greater than the value of an included angle between the inner side blade surface (11) and the crankshaft center line (7);
when the driving motor (2) drives the cutter body (1) to rotate, the chamfering cutter (3) on the cutter body (1) is of a structure capable of deburring an effective chamfer (14) machined in the center hole (13) of the end face of the crankshaft, the deburring cutter (4) is of a structure capable of machining a deburring chamfer (15) in the center hole (13) of the end face of the crankshaft, and the outer edge of the effective chamfer (14) is combined with the inner edge of the deburring chamfer (15);
after a crankshaft end face center hole is machined on an engine crankshaft body through drilling equipment, an effective chamfer can be machined in the crankshaft end face center hole, then the crankshaft body is fixed, a cutter body of a cutter is controlled to move in place, a cutter body is driven by a driving motor to rotate, when the cutter body rotates, a chamfer cutter can act on the effective chamfer surface to machine the effective chamfer surface, burrs on the effective chamfer surface are removed, when the chamfer cutter acts, the deburring cutter can also rotate, burrs are machined at the outer end part of the crankshaft end face center hole, burrs are machined, the process of grinding the crankshaft end face occurs, burrs entering the chamfer part are turned inwards to scrape, deburring is achieved, effective chamfer cleanliness meets the requirements, the crankshaft body is accurately positioned when a conical center point is attached to and abutted against the crankshaft end face center hole, errors are eliminated, and the accuracy of subsequent polishing and dynamic balance machining operation is improved.
2. The engine crankshaft center hole chamfering tool according to claim 1, wherein: the driving motor (2) is connected with a control component (18) capable of controlling the starting and stopping of the driving motor (2) and the rotation speed adjustment, and the driving motor (2) is of a structure capable of driving the cutter body (1) to rotate.
3. The engine crankshaft center hole chamfering tool according to claim 1 or 2, characterized in that: the chamfering tool positioning bolt (19) is screwed in the threaded hole I at the side surface of the tool mounting groove I (9), and the deburring tool positioning bolt (20) is screwed in the threaded hole II at the side surface of the tool mounting groove II (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711457634.XA CN107984030B (en) | 2017-12-28 | 2017-12-28 | Chamfering tool for central hole of engine crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711457634.XA CN107984030B (en) | 2017-12-28 | 2017-12-28 | Chamfering tool for central hole of engine crankshaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107984030A CN107984030A (en) | 2018-05-04 |
| CN107984030B true CN107984030B (en) | 2024-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711457634.XA Active CN107984030B (en) | 2017-12-28 | 2017-12-28 | Chamfering tool for central hole of engine crankshaft |
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| Country | Link |
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| CN (1) | CN107984030B (en) |
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| CN206732270U (en) * | 2016-10-31 | 2017-12-12 | 中航天水飞机工业有限责任公司 | Two-way inner bore chamfering knife |
| CN208147037U (en) * | 2017-12-28 | 2018-11-27 | 江西腾勒动力有限公司 | Engine crankshaft centre bore chamfer machining cutter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7735401B2 (en) * | 2008-07-16 | 2010-06-15 | Dimitrije Stojanovski | Boring tool with adjustable chamfer cutter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2518187A1 (en) * | 1975-04-24 | 1976-11-04 | Beck August | Burr removing tool for tube ends - has internal and external combined concentric multi tooth chamfering cutters |
| DE3730589A1 (en) * | 1987-09-11 | 1989-03-23 | Kraemer & Grebe Kg | Deburring and chamfering tool |
| CN1217961A (en) * | 1997-11-20 | 1999-06-02 | 赫德逊产品有限公司 | Debur tool for simultaneously removing burrs from and chamfering hole in workpiece |
| FR2913618A3 (en) * | 2007-03-16 | 2008-09-19 | Renault Sas | Multitasking tool for e.g. drilling engine part, has chamfering part with two chamfers oppositely oriented towards each other, where chamfers include triangular shape plates added in housing of tool |
| JP2009039800A (en) * | 2007-08-07 | 2009-02-26 | Mitsubishi Heavy Ind Ltd | Chamfering device and gear cutting machine having the same |
| CN201516525U (en) * | 2009-08-14 | 2010-06-30 | 中国石油集团渤海石油装备制造有限公司 | Combined screw thread process knife |
| CN102126028A (en) * | 2011-03-11 | 2011-07-20 | 烟台宝钢钢管有限责任公司 | Machining method and machining equipment of angle of outer bevel of API casing thread |
| CN206200254U (en) * | 2016-10-11 | 2017-05-31 | 台州大昌汽车部件有限公司 | A kind of new deburring rose reamer |
| CN206732270U (en) * | 2016-10-31 | 2017-12-12 | 中航天水飞机工业有限责任公司 | Two-way inner bore chamfering knife |
| CN208147037U (en) * | 2017-12-28 | 2018-11-27 | 江西腾勒动力有限公司 | Engine crankshaft centre bore chamfer machining cutter |
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| CN107984030A (en) | 2018-05-04 |
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