CN112059305B - Technology for removing burrs of intersecting holes of crankshaft - Google Patents
Technology for removing burrs of intersecting holes of crankshaft Download PDFInfo
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- CN112059305B CN112059305B CN202010936961.9A CN202010936961A CN112059305B CN 112059305 B CN112059305 B CN 112059305B CN 202010936961 A CN202010936961 A CN 202010936961A CN 112059305 B CN112059305 B CN 112059305B
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- oil hole
- intersection
- burrs
- ball head
- polishing
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- 238000005516 engineering process Methods 0.000 title abstract description 7
- 238000005498 polishing Methods 0.000 claims abstract description 22
- 238000007664 blowing Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 10
- 238000007689 inspection Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000007704 transition 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
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D67/00—Filing or rasping machines or devices
- B23D67/06—Filing or rasping machines or devices with rotating tools
-
- 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
- B23D67/00—Filing or rasping machines or devices
- B23D67/12—Hand-held or hand-operated filing or rasping devices
-
- 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
- B23D71/00—Filing or rasping tools; Securing arrangements therefor
- B23D71/005—Rotary files
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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)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Drilling And Boring (AREA)
Abstract
A technology for deburring intersecting holes of a crankshaft comprises the steps of S1, filing off flanging burrs in oblique oil holes by a ball head; s2, filing burrs of intersecting holes in a main shaft straight oil hole and a connecting rod straight oil hole by using a ball head, installing a first ball head file on a pistol drill, stretching into the intersection from the main shaft straight oil hole, flexibly rotating 360 degrees to remove the burrs at the intersecting holes and chamfer, installing a second ball head file on the pistol drill, stretching into the intersection from the connecting rod straight oil hole, flexibly rotating 360 degrees to remove the burrs at the intersecting holes and chamfer, and repeatedly rotating and polishing the intersecting positions; s3, filing off the flanging burrs in the inclined oil hole by the ball head; s4, removing foreign matters in the hole by using the high-pressure air blowing oil hole; and S5, checking the oil hole. It can go to compare hole burr and chamfer and go on simultaneously, simplifies whole technology to a certain extent, and oblique oilhole and straight oilhole order burring, and the corresponding even feed that makes a round trip is polished and is made a round trip to rotate and polish, and whole burring is effectual.
Description
Technical Field
The invention relates to the technical field of crankshaft machining, in particular to a technology for deburring intersecting holes of a crankshaft.
Background
The crankshaft is one of the most important parts in the internal combustion engine, and the requirement on the torsional fatigue strength of the crankshaft is higher as the power of the internal combustion engine is continuously increased. The straight oil hole and the inclined oil hole of the crankshaft are connected in a crossed and communicated manner to form a crossed hole, burrs generated by punching or drilling exist at the inner crossed position, a forward and backward integrated cutter is adopted for rotary cutting in the past, secondary burrs are easy to occur, and the cost is high. The existing process method has quality defects of burrs at the intersection of the inner parts of the oil extraction holes, and can cause the phenomena of initial Charpy when a crankshaft is assembled into an engine to run and the like.
And chamfering is needed at the inner intersection of the crankshaft, for example, CN106181273B discloses a method for processing a crankshaft with high torsional fatigue strength, which comprises the steps of firstly finishing the inner wall of an inclined oil hole by using an air gun and a grinding wheel, so that the inner wall of the inclined oil hole has a smooth inner surface without tool marks and burrs; and then chamfering the oblique oil hole by using a rotary file, wherein the chamfering angle is 40 degrees, and removing a sharp corner generated during chamfering to enable the oblique oil hole to be smooth in transition. The deburring and chamfering are carried out in two steps, the deburring mode of the air gun and the grinding wheel has defects, the service life is short, and a new optimization scheme needs to be provided for the related treatment of the crossed holes of the crankshaft.
Disclosure of Invention
The invention aims to provide a process for removing burrs of intersecting holes of a crankshaft, which can remove burrs of the intersecting holes and chamfer simultaneously, simplifies the whole process to a certain extent, sequentially removes burrs of an inclined oil hole and a straight oil hole, correspondingly performs back-and-forth uniform feeding grinding and back-and-forth rotating grinding, and has good whole deburring effect.
The embodiment of the invention is realized by the following technical scheme:
a technology for deburring intersecting holes of a crankshaft comprises the steps of S1, filing off flanging burrs in oblique oil holes by a ball head; s1.1, installing a ball head file on a pistol drill, extending into an intersection from an inclined oil hole, and removing flanging burrs; s1.2, feeding and polishing back and forth uniformly, polishing for multiple times and staying for a period of time at an oil hole and an intersection; s2, filing burrs of intersecting holes in the main shaft straight oil hole and the connecting rod straight oil hole by the ball head; s2.1, mounting a first ball head file on a pistol drill, extending into an intersection from a main shaft straight oil hole, flexibly rotating for 360 degrees to remove burrs at the intersection and chamfering; s2.2, mounting a second ball head file on the pistol drill, extending into the intersection from the connecting rod straight oil hole, flexibly rotating 360 degrees to remove burrs at the intersection and chamfering; s2.3, rotating and polishing the intersection back and forth for multiple times; s3, filing off the flanging burrs in the inclined oil hole by the ball head; s3.1, installing a ball head file on the pistol drill, extending into the intersection from the inclined oil hole, and removing the flanging burrs; s3.2, feeding and polishing back and forth uniformly, polishing for multiple times and staying for a period of time at the oil hole and the intersection; s4, removing foreign matters in the hole by using the high-pressure air blowing oil hole; and S5, checking the oil hole, and observing burrs at the intersection.
Further, in step S1.2, the oil hole and the intersection are stayed for 5' of time.
Further, in step S1.2, the number of times of back and forth uniform feed grinding is not less than 3.
Further, step S2.3 includes rotating the ground segment back and forth no less than 3 times.
Further, in step 3.2, the number of times of back and forth uniform feeding and grinding is not less than 3, and the time is 5' at the oil hole and the intersection.
Further, in step S4, an air gun is used to perform high-pressure air blowing to the oil hole, and air blowing is performed in the sequence of installing the oblique oil hole, the connecting rod straight oil hole, the main shaft straight oil hole and the oblique oil hole, and the air gun stays for a period of time.
Further, in step S4, the air gun stays at 10' for each high pressure blowing time.
Further, in step S5, the quality of each oil hole is checked by an endoscope in a 100% mode, no intersecting burr exists at the intersection, and the deburring process is finished.
The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects: it can remove to compare the hole burr and the chamfer and go on simultaneously, simplifies whole technology to a certain extent, and oblique oilhole and straight oilhole order burring, and the corresponding even feed that makes a round trip is polished and is made a round trip to rotate and polish, and whole burring is effectual.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of a ball head of an embodiment of the present invention providing a burr at a cross-hole that is filed off;
FIG. 2 is a schematic structural view of a straight oil hole and an oblique oil hole in a crankshaft according to an embodiment of the present invention.
An icon: 100-oblique oil holes, 200-straight oil holes, 300-ball head files, 400-burrs and 500-chamfers.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the orientations or positional relationships are only used for convenience of describing the present invention and simplifying the description, but the terms do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Referring to fig. 1 and 2, a crankshaft deburring process 400 is provided, including the steps of:
s1, removing inward flanging burrs 400 of an oblique oil hole 100 by a ball head file 300;
s1.1, installing a ball head file 300 by a pistol drill, extending into an intersection from an inclined oil hole 100, and removing flanging burrs 400;
s1.2, feeding and polishing back and forth uniformly, wherein the polishing times are not less than 3, and the polishing times stay for 5' at the oil hole and the intersection;
s2, removing the burrs 400 of the crossed holes in the main shaft straight oil hole 200 and the connecting rod straight oil hole 200 by the ball head file 300;
s2.1, mounting a first ball head file on a pistol drill, extending into the intersection from the main shaft straight oil hole 200, flexibly rotating for 360 degrees to remove burrs 400 at the intersection and chamfering to form a chamfer 500;
s2.2, mounting a second ball head file on the pistol drill, extending into the intersection from the connecting rod straight oil hole 200, flexibly rotating 360 degrees to remove burrs 400 at the intersection and chamfering;
s2.3, rotating and polishing the intersection back and forth for not less than 3 times;
s3, removing inward flanging burrs 400 of the oblique oil hole 100 by the ball head file 300;
s3.1, installing a ball head file 300 on the pistol drill, extending into the intersection from the inclined oil hole 100, and removing flanging burrs 400;
s3.2, feeding and polishing uniformly back and forth, wherein the polishing times are not less than 3, and the polishing time stays for 5 inches at the oil hole and the intersection;
s4, removing foreign matters in the hole by using the high-pressure air blowing oil hole;
and S5, oil hole inspection, wherein the quality of each oil hole is inspected by 100% by using a light/endoscope, and no intersecting burr 400 exists at the intersection.
The specification of the ball head file 300 in each step is related to the actual crankshaft specification, mainly the specification of 100 oblique oil holes and the specification of 200 straight oil holes. As in S2, the first ball nose file uses 4.5 x 110 ball nose file 300, and the second ball nose file uses 3.5 x 60 ball nose file 300.
The action of flexibly rotating 360 degrees and removing the intersecting hole burrs 400 is almost manually processed in the whole industry, and the flexibility mainly aims at one action requirement of an operator and is also the embodiment of working skills.
Wherein, the reciprocating motion refers to the repeated motion in the oil hole; wherein, the rotation refers to the autorotation motion of the ball head file 300 along with the pistol drill; wherein "feed" refers to movement along the gallery holes.
Wherein, at the concrete grinding of ball head file 300, need the operator to have quite skill, when grinding, the crossing is recessed, and ball head file 300 moves here and has obvious sense of touch. Meanwhile, a corresponding inspection link is provided after the machining is finished.
Further, in step S4, a gas gun is used to perform high-pressure gas blowing to the oil holes, and the gas is blown in the sequence of installing the oblique oil hole 100, the connecting rod straight oil hole 200, the main shaft straight oil hole 200 and the oblique oil hole 100, and stays for 10 ″. The sequence of the two oblique oil holes 100 refers to that the same oblique oil hole 100 needs to be blown back and forth twice in one process. Because the oblique oil hole 100 is communicated with the straight oil hole 200, the oblique oil hole 100 is longer, the straight oil hole 200 is half of the oblique oil hole 100, foreign matters in the hole may slide into the oblique oil hole 100 when blowing straight oil hole 200, and at this time, the oblique oil hole 100 needs to be blown once again.
More, in addition to the above-described operation sequence of S1 to S5, it is also possible to adopt: firstly, the operation sequence of the main shaft straight oil hole 200, the inclined oil hole 100, the high-pressure air blowing and the inspection is carried out, and the corresponding ball head file 300 is polished and chamfered in a consistent manner.
In conclusion, through the crankshaft intersecting hole burr removing 400 process, compared hole burrs 400 and chamfers can be removed at the same time, the whole process is simplified to a certain extent, the oblique oil holes 100 and the straight oil holes 200 sequentially remove burrs 400, the uniform feeding grinding and the rotating grinding are correspondingly carried out back and forth, and the whole deburring 400 effect is good.
The present invention has been described in terms of the preferred embodiment, and it is not intended to be limited to the embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. A crankshaft intersecting hole deburring process is characterized by comprising the following steps:
s1, filing off inner flanging burrs of an inclined oil hole by a ball head;
s1.1, installing a ball head file on a pistol drill, extending into an intersection from an oblique oil hole, and removing flanging burrs;
s1.2, feeding and polishing back and forth uniformly, polishing for multiple times and staying for a period of time at an oil hole and an intersection;
s2, filing burrs of crossed holes in the main shaft straight oil hole and the connecting rod straight oil hole by the ball head;
s2.1, mounting a first ball head file on the pistol drill, extending into the intersection from the main shaft straight oil hole, flexibly rotating 360 degrees to remove burrs at the intersection and chamfering;
s2.2, mounting a second ball head file on the pistol drill, extending into the intersection from the connecting rod straight oil hole, flexibly rotating for 360 degrees to remove burrs at the intersection and chamfering;
s2.3, rotating back and forth and polishing the intersection for multiple times;
s3, filing off the flanging burrs in the inclined oil hole by the ball head;
s3.1, installing a ball head file on the pistol drill, extending into the intersection from the oblique oil hole, and removing the flanging burrs;
s3.2, feeding and polishing back and forth uniformly, polishing for multiple times and staying for a period of time at the oil hole and the intersection;
s4, removing foreign matters in the hole by using the high-pressure air blowing oil hole;
s5, checking the oil hole, and observing burrs at the intersection;
in the step S1.2, staying for 5' at the oil hole and the intersection;
in the step S1.2, the number of times of back-and-forth uniform feeding and polishing is not less than 3;
step S2.3, rotating and polishing the comparison position back and forth for not less than 3 times;
in the step S3.2, the number of times of back-and-forth uniform feeding and polishing is not less than 3, and the time of the back-and-forth uniform feeding and polishing is 5' at the oil hole and the intersection;
in the step S4, an air gun is adopted to aim at the oil hole to blow air at high pressure, and air is blown in the sequence of the inclined oil hole, the connecting rod straight oil hole, the main shaft straight oil hole and the inclined oil hole and stays for a period of time;
in the step S4, the air gun stays for 10' in each high-pressure blowing time;
in the step S5, the quality of each oil hole is checked by an endoscope by 100 percent, and the deburring process is finished when no intersecting burr exists at the intersection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010936961.9A CN112059305B (en) | 2020-09-08 | 2020-09-08 | Technology for removing burrs of intersecting holes of crankshaft |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010936961.9A CN112059305B (en) | 2020-09-08 | 2020-09-08 | Technology for removing burrs of intersecting holes of crankshaft |
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| Publication Number | Publication Date |
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| CN112059305A CN112059305A (en) | 2020-12-11 |
| CN112059305B true CN112059305B (en) | 2023-03-10 |
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| CN202010936961.9A Active CN112059305B (en) | 2020-09-08 | 2020-09-08 | Technology for removing burrs of intersecting holes of crankshaft |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115091144A (en) * | 2022-07-25 | 2022-09-23 | 桂林福达曲轴有限公司 | Machining method capable of improving chamfering quality of crankshaft oil hole |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007210056A (en) * | 2006-02-08 | 2007-08-23 | Nissan Motor Co Ltd | Deburring tool |
| CN102029438B (en) * | 2009-09-29 | 2012-04-11 | 上海纳铁福传动轴有限公司 | Method for removing burrs from through orifices in workpiece |
| CN103692146A (en) * | 2013-12-02 | 2014-04-02 | 蔡天福 | Finishing processing method for burrs at crossing holes |
| CN109365919B (en) * | 2018-12-22 | 2020-04-21 | 辽宁五一八内燃机配件有限公司 | Deburring method and tool for crankshaft oil duct hole |
| CN109551053A (en) * | 2018-12-26 | 2019-04-02 | 江苏大学 | A kind of cross-hole deburring cutter |
| CN209647760U (en) * | 2019-02-15 | 2019-11-19 | 上海必赋汽车配件有限公司 | A kind of cutter for the deburring of inner hole front and back sides |
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Application publication date: 20201211 Assignee: CHENGDU QINGFENG MECHANICAL AND ELECTRICAL EQUIPMENT MANUFACTURING CO.,LTD. Assignor: SICHUAN PAN ASIA POWER TECHNOLOGY CO.,LTD. Contract record no.: X2024980005154 Denomination of invention: A process for removing burrs from intersecting holes on crankshafts Granted publication date: 20230310 License type: Common License Record date: 20240430 |