CN108971519A - Cylinder of diesel engine bottom bolts hole back side mounting surface scrapes quadratic method - Google Patents

Cylinder of diesel engine bottom bolts hole back side mounting surface scrapes quadratic method Download PDF

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Publication number
CN108971519A
CN108971519A CN201811085218.6A CN201811085218A CN108971519A CN 108971519 A CN108971519 A CN 108971519A CN 201811085218 A CN201811085218 A CN 201811085218A CN 108971519 A CN108971519 A CN 108971519A
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CN
China
Prior art keywords
cylinder block
mounting
bolts
machine tool
tool chief
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811085218.6A
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Chinese (zh)
Inventor
汤忠良
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CSSC Marine Power Co Ltd
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CSSC Marine Power Co Ltd
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Publication date
Application filed by CSSC Marine Power Co Ltd filed Critical CSSC Marine Power Co Ltd
Priority to CN201811085218.6A priority Critical patent/CN108971519A/en
Publication of CN108971519A publication Critical patent/CN108971519A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B1/00Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B5/00Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor

Abstract

The invention discloses a kind of cylinder of diesel engine bottom bolts hole back side mounting surfaces to scrape quadratic method, comprising the following steps: 1) will be mounted on machine tool chief axis equipped with the knife bar of cutter, point of a knife is towards the right side;2) machine tool chief axis is deviated to the left;3) cutter is fed down;4) main shaft rotates forward, and opens coolant liquid;5) cutter does several circle spiral line interpolation circular motion upwards and does a circle circular motion again, cylinder block bottom bolts hole back side mounting surface is completed in cutting around cylinder block bottom bolts axially bored line;6) withdrawing is moved down;7) point of a knife is adjusted towards the right side;8) upward withdrawing;9) it repeats the above steps, completes striking off for cylinder block bottom remainder bolt hole back side mounting surface.For the present invention using full-automatic cutting, whole process is easy to operate without manual operations, work efficiency is high, and can accurately guarantee the radius of gyration of cutter, to guarantee the uniformity of threaded hole back side mounting surface processing dimension, improve the machining accuracy of threaded hole back side mounting surface.

Description

Cylinder of diesel engine bottom bolts hole back side mounting surface scrapes quadratic method
Technical field
The present invention relates to a kind of cylinder of diesel engine bottom bolts holes to install method for processing surface, especially a kind of diesel engine gas Method for processing surface is installed at the cylinder base bolt hole back side, belongs to Machining Technology for Cutting field.
Background technique
Cylinder block is one of important part of diesel engine, and quality directly influences the overall performance of diesel engine and makes Use the service life.According to diesel engine type design requirement, there are many bolts hole being connected with base for cylinder block floor design, such as Fig. 1 institute Show, 1 bottom bolts hole aperture d of cylinder block is smaller, and it is big that bolt hole back side mounting surface I strikes off area.Cutter is scraped with tradition is commonly counter It is anti-when scraping, it suffers from the drawback that
1, since the aperture D of bolt hole back side mounting surface I is greater than bolt hole aperture d, if directly by blade on the knife bar to Lower feeding, blade can be interfered with bolt hole, therefore need first remove the blade on cutter by hand, then by machine tool chief axis along spiral shell Keyhole axis is fed down to behind predetermined position to be loaded onto blade and is struck off by hand again, similarly, after the completion of striking off, equally needs craft Dismounting blade could retract cutter, and not only cumbersome, working efficiency is low, and there are some potential safety problemss, and when striking off Since bolt hole back side mounting surface I is located at cylinder block bottom rear, position is hidden, invisible to can not touch, when installing blade by hand It can not accurately guarantee the radius of gyration of cutter, mounting surface I working (finishing) area size in the bolt hole back side not can guarantee unified, direct shadow yet The processing quality of bolt hole is rung.
2, anti-knife bar when scraping feeds up cutting with bolt hole positioning and guiding, during bolt hole positioning and guiding, due to The knife bar of movement and static bolt hole hole wall phase mutual friction, easily damage bolt hole hole wall and knife bar itself, not only break up Bolt hole surface quality, and often to be replaced after knife bar damage failure, it causes to waste, virtually increases cost.
In conclusion directly being processed with machine tool, the cylinder block bottom bolts hole back side I difficulty of mounting surface is big, and operation is not square Just, mounting surface I processing dimension in the bolt hole back side is unable to accurately control, and drawing requirement is also not achieved in processing quality.
Summary of the invention
The object of the present invention is to provide a kind of cylinder of diesel engine bottoms easy to operate, work efficiency is high, machining accuracy is high Portion bolt hole back side mounting surface scrapes quadratic method.
The present invention is achieved by the following technical programs:
A kind of cylinder of diesel engine bottom bolts hole back side mounting surface scrapes quadratic method, comprising the following steps:
1) knife bar equipped with cutter is mounted on machine tool chief axis, machine tool chief axis is moved to the spiro keyhole position of cylinder block bottom first It sets, guarantees that machine tool chief axis axis and cylinder block bottom bolts axially bored line are coaxial, cutter is located above cylinder block bottom front, simultaneously Cutter is oriented by machine tool chief axis, makes point of a knife towards the right side;
2) machine tool chief axis is offset to predetermined position to the left, makes spacing between machine tool chief axis axis and cylinder block bottom bolts axially bored line For e, knife bar left side is a with gap on the left of cylinder block bottom bolts hole wall;
3) machine tool chief axis is fed vertically downward along cylinder block bottom bolts axially bored line, until cutter is located at cylinder block bottom back Face, while point of a knife and cylinder block bottom rear being made to retain safe distance R;
4) main shaft rotates forward, and opens coolant liquid;
5) machine tool chief axis band cutter is (viewed from above) clockwise rotates, and around cylinder block bottom bolts axially bored line, is with e Several circle spiral line interpolation circular motion are partly radially done to bolt hole back side mounting surface depth H, guarantees that depth H is constant and does one again Circular motion is enclosed, completes cylinder block bottom bolts hole back side mounting surface to cut;
6) machine tool chief axis moves down withdrawing to predetermined position along cylinder block bottom bolts axially bored line, makes the gentle cylinder base of point of a knife The back side retains safe distance R;
7) machine tool chief axis stops operating, and orientation makes point of a knife towards the right side;
8) by machine tool chief axis along the upward withdrawing of cylinder block bottom bolts axially bored line, until cutter is located on cylinder block bottom front Side;
9) machine tool chief axis is moved to the next bolt hole position in cylinder block bottom, repeated the above steps, complete cylinder block bottom Remaining bolt hole back side mounting surface strikes off;
10) lathe is closed, coolant liquid is closed.
The purpose of the present invention can also be further realized by following technical measures.
Cylinder of diesel engine bottom bolts above-mentioned hole back side mounting surface scrapes quadratic method, wherein e=- d1/4+r/ in step 2 2。
Cylinder of diesel engine bottom bolts above-mentioned hole back side mounting surface scrapes quadratic method, wherein a=0.1mm in step 2~ 0.2mm。
Cylinder of diesel engine bottom bolts above-mentioned hole back side mounting surface scrapes quadratic method, wherein R in step 3) and step 7) For 3mm~5mm.
Cylinder of diesel engine bottom bolts above-mentioned hole back side mounting surface scrapes quadratic method, wherein in step 5), Tool in Cutting Diameter is equal to cylinder block bottom bolts hole back side mounting surface aperture D.
The present invention strikes off cylinder block bottom thread hole back side mounting surface using dedicated tool in numerical control machining center Processing, positioning accuracy is high, and cutting is reliable and stable, ensure that the processing quality of threaded hole back side mounting surface.When striking off, from feed to Withdrawing is using full-automatic cutting, and whole process is without manual operations, and not only easy to operate, work efficiency is high, and safety is good, and It can accurately guarantee the radius of gyration of cutter, to guarantee the uniformity of threaded hole back side mounting surface processing dimension, substantially increase The machining accuracy of threaded hole back side mounting surface.Furthermore it is equipped with gap a with cylinder block bottom bolts hole wall left side on the left of knife bar, in this way When cutting between knife bar and bolt hole wall will not phase mutual friction, not only protected the surface quality of bolt hole wall, but also protect knife bar Not damaged, knife bar is durable, has saved cost.Machine tool chief axis deviates suitable distance e to the left, it is ensured that feed withdrawing is smooth While, it can be also accurately positioned tool position, be ready for next step machining.Point of a knife and cylinder block bottom rear retain Safe distance R can avoid generating interference therebetween when cutter rotation.Cutter can also control flexible in the present invention, to adjust Whole cutter elongation, to process the bolt back side mounting surface of different pore size, the scope of application is very extensive.
The advantages and features of the present invention will be illustrated and explained by the non-limitative illustration of preferred embodiment below, These embodiments only provide as an example referring to attached drawing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram in cylinder of diesel engine bottom bolts hole;
Fig. 2 is the structural schematic diagram that machine tool chief axis of the present invention is moved to the first bolt hole position in cylinder block bottom;
Fig. 3 is the structural schematic diagram after machine tool chief axis of the present invention deviates to the left;
Fig. 4 is structural schematic diagram of the tool feeding of the present invention to cylinder block bottom rear;
Fig. 5 is that cutter of the present invention rotates clockwise the structural schematic diagram after 180 °;
Fig. 6 is the structural schematic diagram of cutting tool state of the present invention.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
In the present embodiment, arrow direction as shown in Figure 1 is the right side, otherwise is a left side.
The present invention processes cylinder block bottom bolts hole back side mounting surface I using dedicated tool on numerical control machining center.Such as Shown in Fig. 2, dedicated tool includes knife bar 2 and Special reverse scraper 3(hereinafter referred to as cutter 3), Special reverse scraper 3 is white steel knife, is led to It crosses holding screw 4 to be fixed on knife bar 2,2 lower end of knife bar is equipped with interior coolant liquid guide hole 21 and cooling bath 22, and coolant liquid is from lathe It is directly injected on blade and workpiece 1 by guide hole 21 and cooling bath 22 out, spray cooling effect is good, when for cutting Cooling blade, extends cutting-tool's used life, improves the surface quality of bolt hole back side mounting surface I.
The important parameter of Special reverse scraper 3: as shown in Figure 1, bolt hole aperture d, the aperture D of bolt hole back side mounting surface I And depth H.As shown in Figure 2: 2 diameter d1 of knife bar, point of a knife Maximum turning radius r, in order to realize full-automatic cutting, cutter is set Timing parameter must satisfy d1/2+r < d, r-d1/2 > (D-d)/2, concurrently set gap on the left of 2 left side of knife bar and bolt hole wall For [d- (d1/2+r)]/2=0.4/2=0.2mm.
Cylinder of diesel engine bottom bolts hole back side mounting surface scrapes quadratic method, comprising the following steps:
1) as shown in Fig. 2, the knife bar 2 equipped with cutter is mounted on machine tool chief axis 5, machine tool chief axis 5 is moved to 1 bottom of cylinder block First bolt hole position guarantees that 5 axis of machine tool chief axis and 1 bottom bolts axially bored line of cylinder block are coaxial, and cutter 3 is located at cylinder block Above 1 bottom front, while cutter 3 being oriented by machine tool chief axis 5, makes point of a knife towards the right side.Diagram dashed region illustrates this position Directly feeding tool 3 and bolt hole can interfere machine tool chief axis 5 down, in order to realize full-automatic cutting, indicate machine tool chief axis 5 It must deviate to the left;
2) as shown in figure 3, machine tool chief axis 5 is offset to predetermined position to the left, make 5 axis of machine tool chief axis and 1 bottom spiral shell of cylinder block Spacing is e between keyhole axis, and 2 left side of knife bar is a with gap on the left of 1 bottom bolts hole wall of cylinder block.Wherein e=(d-d1)/2- [d- (d1/2+r)]/2=- d1/4+r/2, a=0.1mm~0.2mm, a=0.2mm in the present embodiment, meet condition d1/2+r < D illustrates dashed region and the direct feeding tool 3 down of this position machine tool chief axis 5 is illustrated not interfere with bolt hole, at this time for reality Now full-automatic cutting, indication 5 next step of machine tool chief axis can be fed down along bolt axially bored line;
3) as shown in figure 4, machine tool chief axis 5 is fed vertically downward along 1 bottom bolts axially bored line of cylinder block, until 3, cutter In 1 bottom rear of cylinder block, while point of a knife and 1 bottom rear of cylinder block being made to retain safe distance R, R=3mm~5mm, this implementation R=5mm in example;
4) main shaft rotates forward, and opens coolant liquid;
5) as shown in figure 5, machine tool chief axis 5 makes point of a knife towards a left side with 180 ° of the rotation (viewed from above) clockwise of cutter 3. Diagram dashed region signal 3 cutting diameter of cutter is equal to I aperture D of bolt hole back side mounting surface, i.e. 2(e+r at this time)=D, cutter 3 If timing parameter must satisfy: 2(e+r)=2(-d1/4+r/2+r)=3r- d1/2=D.
6) as shown in fig. 6, machine tool chief axis 5 is with the rotation (viewed from above) clockwise of cutter 3, around 1 bottom of cylinder block Portion's bolt axially bored line is partly radially to do several circle spiral line interpolation circular motion to bolt hole back side mounting surface depth H with e, Guarantee that depth H is constant and do a circle circular motion again, completes 1 bottom bolts hole back side mounting surface I of cylinder block to cut;
7) machine tool chief axis 5 moves down withdrawing to predetermined position along 1 bottom bolts axially bored line of cylinder block, makes point of a knife and cylinder block 1 Bottom rear retains safe distance R, as shown in Figure 4;
8) machine tool chief axis 5 stops operating, and orientation makes point of a knife towards the right side, as shown in Figure 4;
9) by machine tool chief axis 5 along the 1 upward withdrawing of bottom bolts axially bored line of cylinder block, until cutter 3 is located at 1 bottom front of cylinder block Top, as shown in Figure 3;
10) machine tool chief axis 5 is moved to the next bolt hole position in 1 bottom of cylinder block, repeated the above steps, complete cylinder block 1 Bottom remainder bolt hole back side mounting surface I strikes off;
11) lathe is closed, coolant liquid is closed.
In addition to the implementation, the present invention can also have other embodiments, all to use equivalent substitution or equivalent transformation shape At technical solution, be all fallen within the protection domain of application claims.

Claims (5)

1. a kind of cylinder of diesel engine bottom bolts hole back side mounting surface scrapes quadratic method, it is characterised in that the following steps are included:
1) knife bar equipped with cutter is mounted on machine tool chief axis, machine tool chief axis is moved to the spiro keyhole position of cylinder block bottom first It sets, guarantees that machine tool chief axis axis and cylinder block bottom bolts axially bored line are coaxial, cutter is located above cylinder block bottom front, simultaneously Cutter is oriented by machine tool chief axis, makes point of a knife towards the right side;
2) machine tool chief axis is offset to predetermined position to the left, makes spacing between machine tool chief axis axis and cylinder block bottom bolts axially bored line For e, knife bar left side is a with gap on the left of cylinder block bottom bolts hole wall;
3) machine tool chief axis is fed vertically downward along cylinder block bottom bolts axially bored line, until cutter is located at cylinder block bottom back Face, while point of a knife and cylinder block bottom rear being made to retain safe distance R;
4) main shaft rotates forward, and opens coolant liquid;
5) machine tool chief axis band cutter is (viewed from above) clockwise rotates, and around cylinder block bottom bolts axially bored line, is with e Several circle spiral line interpolation circular motion are partly radially done to bolt hole back side mounting surface depth H, guarantees that depth H is constant and does one again Circular motion is enclosed, completes cylinder block bottom bolts hole back side mounting surface to cut;
6) machine tool chief axis moves down withdrawing to predetermined position along cylinder block bottom bolts axially bored line, makes the gentle cylinder base of point of a knife The back side retains safe distance R;
7) machine tool chief axis stops operating, and orientation makes point of a knife towards the right side;
8) by machine tool chief axis along the upward withdrawing of cylinder block bottom bolts axially bored line, until cutter is located on cylinder block bottom front Side;
9) machine tool chief axis is moved to the next bolt hole position in cylinder block bottom, repeated the above steps, complete cylinder block bottom Remaining bolt hole back side mounting surface strikes off;
10) lathe is closed, coolant liquid is closed.
2. cylinder of diesel engine bottom bolts as described in claim 1 hole back side mounting surface scrapes quadratic method, it is characterised in that: step It is rapid 2) in e=- d1/4+r/2.
3. cylinder of diesel engine bottom bolts as claimed in claim 1 or 2 hole back side mounting surface scrapes quadratic method, feature exists In: a=0.1mm~0.2mm in step 2.
4. cylinder of diesel engine bottom bolts as described in claim 1 hole back side mounting surface scrapes quadratic method, it is characterised in that: step It is rapid that 3) and in step 6) R is 3mm~5mm.
5. cylinder of diesel engine bottom bolts as described in claim 1 hole back side mounting surface scrapes quadratic method, it is characterised in that: step It is rapid 5) in, Tool in Cutting diameter be equal to cylinder block bottom bolts hole back side mounting surface aperture D.
CN201811085218.6A 2018-09-18 2018-09-18 Cylinder of diesel engine bottom bolts hole back side mounting surface scrapes quadratic method Pending CN108971519A (en)

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Application Number Priority Date Filing Date Title
CN201811085218.6A CN108971519A (en) 2018-09-18 2018-09-18 Cylinder of diesel engine bottom bolts hole back side mounting surface scrapes quadratic method

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Application Number Priority Date Filing Date Title
CN201811085218.6A CN108971519A (en) 2018-09-18 2018-09-18 Cylinder of diesel engine bottom bolts hole back side mounting surface scrapes quadratic method

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2756706A1 (en) * 1977-12-20 1979-06-28 Bilz Hermann Gmbh & Co Counterboring tool for rearward sinking - has head and support shaft positioned eccentrically w.r.t. main shaft
CN2832383Y (en) * 2005-10-27 2006-11-01 扬动股份有限公司 Counter-scrape countersink drill
CN102009196A (en) * 2010-09-28 2011-04-13 中国西电电气股份有限公司 Back spot facing machining cutter and application method thereof
CN202239821U (en) * 2011-09-27 2012-05-30 上海宏功机械科技有限公司 Eccentric powerful counter-scrape counter-boring combined tool
CN204209146U (en) * 2014-10-30 2015-03-18 苏州工业园区得意机电设备有限公司 A kind of anti-scraper
CN106694963A (en) * 2017-01-24 2017-05-24 威海伯特利萨克迪汽车安全系统有限公司 Stepped boring and drilling composite tool and boring and drilling machining technology thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2756706A1 (en) * 1977-12-20 1979-06-28 Bilz Hermann Gmbh & Co Counterboring tool for rearward sinking - has head and support shaft positioned eccentrically w.r.t. main shaft
CN2832383Y (en) * 2005-10-27 2006-11-01 扬动股份有限公司 Counter-scrape countersink drill
CN102009196A (en) * 2010-09-28 2011-04-13 中国西电电气股份有限公司 Back spot facing machining cutter and application method thereof
CN202239821U (en) * 2011-09-27 2012-05-30 上海宏功机械科技有限公司 Eccentric powerful counter-scrape counter-boring combined tool
CN204209146U (en) * 2014-10-30 2015-03-18 苏州工业园区得意机电设备有限公司 A kind of anti-scraper
CN106694963A (en) * 2017-01-24 2017-05-24 威海伯特利萨克迪汽车安全系统有限公司 Stepped boring and drilling composite tool and boring and drilling machining technology thereof

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Application publication date: 20181211

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