CN104339010B - A kind of crankshaft pin excessive corner milling process equipment and method - Google Patents
A kind of crankshaft pin excessive corner milling process equipment and method Download PDFInfo
- Publication number
- CN104339010B CN104339010B CN201310318441.1A CN201310318441A CN104339010B CN 104339010 B CN104339010 B CN 104339010B CN 201310318441 A CN201310318441 A CN 201310318441A CN 104339010 B CN104339010 B CN 104339010B
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- milling
- cutter
- circular arc
- process equipment
- crankshaft pin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/08—Disc-type cutters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/06—Milling crankshafts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/12—Cutters specially designed for producing particular profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/04—Overall shape
- B23C2200/0416—Irregular
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The invention discloses a kind of crankshaft pin excessive corner milling process equipment and method, wherein, the excessive fillet of described crankshaft pin is R27 × R10, it is to be combined, by 2 sections of circular arcs, the smooth excessive fillet formed, it is characterized in that, described process equipment includes: by the milling cutter part of the complete R27 circular arc of 3 R27 axially distributed Combined machining of circular arc blade, the cutting tip length of each blade is about 14 mm, with the milling cutter part of the processing R10 circular arc being made up of 1 R10 cutter, and these two parts are corresponding with corresponding smooth excessive fillet.Present invention achieves the Milling Process that the excessive fillet of crankshaft pin is two sections of circular arcs, improve product quality and production efficiency.
Description
Technical field
The invention belongs to a kind of crankshaft pin excessive corner milling process equipment and method.
Background technology
High speed high-power diesel engine crank axle is typical elongated special-shaped axis, is the important Parts of diesel engine.Crank-pin transition
Fillet refers to crank-pin and the knuckle (shown in structure as Fig. 1,2 and 3) being connected of cranking arm, and wherein, this position counter stress is concentrated
Very sensitive, knuckle, to improving crankshaft fatigue strength and having very important meaning service life, directly affects diesel engine
Quality and service life.
The processing method that the excessive fillet of crank-pin is traditional, is on bent axle special purpose lathe, processes with arc lathe tool walking program,
The excessive circular shape inaccuracy processed, surface quality is poor, and finally this position also needs manual grinding to repair.
Traditional crankshaft pin excessive fillet processing method: bent axle is fixing on the table, and cutterhead is around bent axle rotary cutting
Cutting, often processing one is turned, and workman must lift mobile bent axle more than 6 tons, reorientates, clamping and to cutter.Labor intensity is big, behaviour
Make difficulty big, produce non-cutting time long.The substantial amounts of time all consumes in the preparatory stage, and production efficiency is low.Process is excessive
Radiused surface is of poor quality, and owing to crankshaft deformation is big, excessive rounded shapes very irregular, circumferencial direction is deep mixed, and pincers worker is polished
Workload is big.Owing to machine tool capability is unstable, craftsmanship is required the highest, knife time once owing to processing this position, scrap
Cross a bent axle, therefore process very risky.
In turning milling center, with the excessive fillet of rose cutter milling, cutter overhangs oversize, poor rigidity, and shake cutter is serious.And should
Method can only process the bent axle that excessive fillet is single circular arc, has limitation.
Summary of the invention
The technical problem to be solved is to provide a kind of special crankshaft fillet processing wire rod quality, is combined at turnning and milling and adds
The excessive fillet of work center implementation crankshaft pin is processed, and makes Large Crankshaft processing be enclosed in turn-milling complex machining center and grinding machine
On, improve crankshaft processing technology stability and production efficiency, improve bent axle product quality.This processing method simple in construction, use
Scope is wide, easy to operate, be easy to promote the use of.
It is as follows that the present invention solves the technical scheme that above-mentioned technical problem taked:
A kind of crankshaft pin excessive corner milling process equipment, wherein, the excessive fillet of described crankshaft pin be R27 ×
R10, is to be combined, by 2 sections of circular arcs, the smooth excessive fillet formed, it is characterised in that described process equipment includes:
By the milling cutter part of the complete R27 circular arc of 3 R27 axially distributed Combined machining of circular arc blade, each blade
Cutting tip length is about 14 mm, and the milling cutter part of the processing R10 circular arc being made up of 1 R10 cutter, and these two parts and phase
The smooth excessive fillet answered is corresponding.
Wherein, it is additionally provided with knife bar, wherein, a diameter of φ 80 of described knife bar, and one end of described knife bar and cutterhead phase
Connecting, one end is connected with lathe by interface.
Wherein, described knife bar is the Boring Bar being made of metal.
A kind of crankshaft pin excessive corner milling processing method, uses above-mentioned process equipment, in described process equipment
There is to tilt the angle of 2 ° between the heart and the main shaft of lathe, and the turnning and milling complex centre of described lathe has 5 and controls axle, numerical control
System is Siemens 840D, to realize any 3 axle linkages；It is characterized in that, direction of feed is vertical feed；
Adding man-hour, using the processing method of servo-actuated milling to be processed, the cutter of described process equipment is all the time and crank
The excessive fillet of pin keeps tangent.
Wherein, during processing, machine tool chief axis must tilt 2 °, and processing when, bent axle is around trunnion center steering, main
Axle along X, Y direction up and down, move left and right, milling cutter and bent axle remain tangency location, three-shaft linkage Milling Process.
After this invention takes such scheme, it is achieved that the excessive fillet of crankshaft pin is that the milling of two sections of circular arcs adds
Work, improves product quality and production efficiency.By field adjustable and tracking, this method processes in turnning and milling complex centre
Circular arc, meets drawing requirement with model inspection, and surface roughness brings up to Ra3.2 by there being original Ra12.5.This crankshaft crooked
Handle pin excessive corner milling processing method, simple in construction, range are wide, easy to operate, processing risk is low, it is simple to promote and make
With.
Other features and advantages of the present invention will illustrate in the following description, and, partly become from description
Obtain it is clear that or understand by implementing the present invention.The purpose of the present invention and other advantages can be by the explanations write
Structure specifically noted in book, claims and accompanying drawing realizes and obtains.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings the present invention is described in detail, so that the above-mentioned advantage of the present invention is definitely.Its
In,
Fig. 1 is the schematic diagram of the excessive fillet of crankshaft pin of prior art；
Fig. 2 is the schematic diagram of the excessive fillet of crankshaft pin of prior art；
Fig. 3 is the schematic diagram of the excessive fillet of crankshaft pin of prior art；
Fig. 4 is the schematic diagram of the cutterhead of crankshaft pin of the present invention excessive corner milling process equipment；
Fig. 5 is the schematic diagram of the cutterhead of crankshaft pin of the present invention excessive corner milling process equipment；
Fig. 6 is the schematic diagram of crankshaft pin of the present invention excessive corner milling process equipment；
Fig. 7 is the schematic diagram of crankshaft pin of the present invention excessive corner milling processing method.
Detailed description of the invention
Describe embodiments of the present invention in detail below with reference to accompanying drawing and example, whereby how the present invention is applied skill
Art means solve technical problem, and the process that realizes reaching technique effect can fully understand and implement according to this.Need explanation
It is that, as long as not constituting conflict, each embodiment in the present invention and each feature in each embodiment can be combined with each other, institute
The technical scheme formed is all within protection scope of the present invention.
Wherein, the technical solution used in the present invention is: with the wire rod quality equipped with circular arc blade on turnning and milling complex centre with
The dynamic excessive fillet of milling crankshaft pin.
Specifically, crankshaft part as shown in Figure 1, 2, 3, in an embodiment, its length 5730 ± 1, maximum rotating diameter
860,6 crank journals of Φ are divided into 3 different phase places, and phase angle is 120 °.Material is 34CrNiMo6, weight about 6000Kg.
Trunnion Φ 370h6(0-0.036), crank journal Φ 350h6(0-0.036), crank journal eccentric throw: 250 ±
0.2㎜.Crank-pin excessive fillet R27 × R10, trunnion direction cutting-in 2.4, crank arm direction cutting-in 0.5.
Wherein, determine, due to cutter scheme, the bottleneck being to solve arc machining.
The cutter of other type bent axle of early stage configuration is rose cutter, and in use, it is tight that this cutter exposes shake cutter
Weight, surface roughness does not reaches drawing requirement, the defect that tool wear is fast, and rose cutter processing scheme can only process single circle
The excessive fillet of arc, two or more circular arc Milling Process are domestic temporary without successful experience.
Workpiece and existing cutter are analyzed, after emulation technology is simulated, it is proposed that new wire rod quality processing scheme,
After using the program, the processing of the excessive circular arc of bent axle can be completed by milling-lathe machining center, and surface roughness will disclosure satisfy that drawing
Requirement, so, both decreased part turnover time, improve again crudy and the production efficiency of part.To the most bent
Axle batch machining and raising technology stability are significant.
As shown in Figure 4,5, 6, described crankshaft pin excessive corner milling process equipment, wherein, described crankshaft pin
Excessively fillet is R27 × R10, is to be combined, by 2 sections of circular arcs, the smooth excessive fillet formed, and described process equipment includes:
By the milling cutter part of the complete R27 circular arc of 3 R27 axially distributed Combined machining of circular arc blade, each blade
Cutting tip length is about 14 mm, and the milling cutter part of the processing R10 circular arc being made up of 1 R10 cutter, and these two parts and phase
The smooth excessive fillet answered is corresponding.
Specifically, the cutterhead of its excessive fillet being made up of the circular arc blade of two kinds of different sizes.
In an embodiment, the R27 circular arc blade 3 that circular arc blade is 9 radius 27mm of the two different size and 3
The R10 circular arc blade 4 of radius 10mm, and a diameter of φ 125mm, number of effective actual teeth Zeff=3 of described cutterhead 2.
Specifically, the cutterhead of its excessive fillet being made up of the circular arc blade of two kinds of different sizes, excessive fillet is by R27
With two sections of tangent compositions of circular arc of R10, R27 arc length about 42 mm, R10 arc length about 5 mm, and described arc cutter is by 3
The R27 circular arc that the individual R27 axially distributed Combined machining of circular arc blade is complete, the cutting tip length of each blade is about 14 mm,
R10 circular arc is with 1 R10 cutter.Summary, complete excessively circular arc 3 R27 circular arc blades and 1 R10 circular arc blade of crank journal
Processing, considers the problem such as chip removal and working (machining) efficiency, and 4 blades are circumferentially distributed as 10 degree；Can on whole facing cutter
To arrange 3 groups of blades, i.e. 9 R27 circular arc blades and 3 R10 blades.Significantly reduce the manufacture difficulty of blade and be manufactured into
This.
Wherein, it is additionally provided with knife bar 1, wherein, a diameter of φ 80 of described knife bar 1, and one end of described knife bar and cutterhead
Being connected, one end is connected with lathe by interface.Wherein, described knife bar 1 is the Boring Bar being made of metal.
Fig. 7 is the schematic diagram of crankshaft pin of the present invention excessive corner milling processing method, specifically, and a kind of crankshaft crooked
Handle pin excessive corner milling processing method, uses above-mentioned process equipment, between center and the main shaft of lathe of described process equipment
There is to tilt the angle of 2 °, and the turnning and milling complex centre of described lathe has 5 and controls axle, digital control system is Siemens 840D,
To realize any 3 axle linkages；It is characterized in that, direction of feed is vertical feed；
Adding man-hour, using the processing method of servo-actuated milling to be processed, the cutter of described process equipment is all the time and crank
The excessive fillet of pin keeps tangent.
Wherein, during processing, machine tool chief axis must tilt 2 °, and processing when, bent axle is around trunnion center steering, main
Axle along X, Y direction up and down, move left and right, milling cutter and bent axle remain tangency location, three-shaft linkage Milling Process.
Specifically, using above process equipment to be processed, direction of feed is vertical feed.
Owing to the excessive fillet of crank-pin is the most shallow with crank side cutting-in, only 0.5, vertically enter from crank side is the most shallow
Cutter, simplifies program, it is to avoid process a facet during 45 ° of direction feeds on crank-pin.
The model inspection of the crankshaft pin excessive rounded shapes design processed, roughness roughness measuring instrument is examined
Survey.
After this invention takes such scheme, it is achieved that the excessive fillet of crankshaft pin is that the milling of two sections of circular arcs adds
Work, improves product quality and production efficiency.By field adjustable and tracking, this method processes in turnning and milling complex centre
Circular arc, meets drawing requirement with model inspection, and surface roughness has original Ra12.5 to bring up to Ra3.2.This crankshaft crank
Selling excessive corner milling processing method, simple in construction, range are wide, easy to operate, processing risk is low, it is simple to promote the use of.
Dress cutter mode is lathe inclined main axes 2 ° during processing.Turnning and milling complex centre has 5 and controls axle, and digital control system is west
MENZI 840D, it is possible to achieve any 3 axle linkages.When bent axle rotates on turnning and milling complex centre, the position of crank-pin is also with rotation
Turning, will process the excessive fillet at this position, cutter is necessary for moving along with the change in location of crank-pin.We use servo-actuated milling
The processing method cut is processed, it is simply that Tool in Cutting position keeps tangent with the excessive fillet of crank-pin all the time.In order to avoid
Milling cutter far-end produced with crank-pin and cut, and during processing, machine tool chief axis must tilt 2 °.Bent axle is around trunnion center steering, main shaft edge
X, Y direction up and down, move left and right, milling cutter and bent axle remain tangency location, three-shaft linkage Milling Process.Concrete manuscript
As shown in Figure 7.
The present invention breaches in bent axle highly-efficient processing bottleneck operation in the past few years, indicates China's high-power middling speed bavin simultaneously
Oil machine machine crankshaft Technology Progress, in industry maintains the leading position, the most only with turn-milling complex machining center and numerical-control crankshaft
Grinding machine two class key equipment can complete all to process, and has broken away from depending on of the former West Germany obsolete equipment that this operation just has to founding the factory
Rely.The method has wide application and preferable promotional value.
Finally it is noted that the foregoing is only the preferred embodiments of the present invention, it is not limited to the present invention,
Although being described in detail the present invention with reference to previous embodiment, for a person skilled in the art, it still may be used
So that the technical scheme described in foregoing embodiments to be modified, or wherein portion of techniques feature is carried out equivalent.
All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included in the present invention's
Within protection domain.
Claims (2)
1. a crankshaft pin knuckle milling method, uses crankshaft pin knuckle milling equipment,
Wherein, described crankshaft pin knuckle is R27 × R10, is to be combined the fillet that smoothly transits formed, institute by 2 sections of circular arcs
State process equipment to include: by the milling cutter part of the complete R27 circular arc of 3 R27 axially distributed Combined machining of circular arc blade, each
The cutting tip length of blade is about 14 mm, and the milling cutter part of the processing R10 circular arc being made up of 1 R10 cutter, and these two
Divide corresponding with the corresponding fillet that smoothly transits;It is additionally provided with knife bar, wherein, a diameter of φ 80 of described knife bar, and described cutter
One end of bar is connected with cutterhead, and one end is connected with lathe by interface;Described knife bar is the Boring Bar being made of metal;
Wherein, between center and the main shaft of lathe of described process equipment, there is to tilt the angle of 2 °, and the turnning and milling of described lathe is combined
Center has 5 and controls axle, and digital control system is Siemens 840D, to realize any 3 axle linkages；It is characterized in that, direction of feed
For vertical feed；
Adding man-hour, using the processing method of servo-actuated milling to be processed, the cutter of described process equipment all the time with crank-pin
Knuckle keeps tangent.
Crankshaft pin knuckle milling method the most according to claim 1, it is characterised in that lathe during processing
Main shaft must tilt 2 °, and processing when, bent axle around trunnion center steering, main shaft along X, Y direction up and down, left and right moves
Dynamic, milling cutter and bent axle remain tangency location, three-shaft linkage Milling Process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310318441.1A CN104339010B (en) | 2013-07-26 | 2013-07-26 | A kind of crankshaft pin excessive corner milling process equipment and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310318441.1A CN104339010B (en) | 2013-07-26 | 2013-07-26 | A kind of crankshaft pin excessive corner milling process equipment and method |
Publications (2)
| Publication Number | Publication Date |
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| CN104339010A CN104339010A (en) | 2015-02-11 |
| CN104339010B true CN104339010B (en) | 2016-08-24 |
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| CN201310318441.1A Active CN104339010B (en) | 2013-07-26 | 2013-07-26 | A kind of crankshaft pin excessive corner milling process equipment and method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108380949B (en) * | 2018-01-29 | 2021-02-09 | 上汽通用五菱汽车股份有限公司 | Crankshaft milling process |
| CN109848470B (en) * | 2019-03-08 | 2020-07-24 | 武汉重工铸锻有限责任公司 | Method for processing middle-high speed crankshaft crank neck unloading groove |
| CN114951775B (en) * | 2022-06-29 | 2024-01-09 | 东风本田汽车有限公司 | Method for machining crankshaft thrust surface and clearance surface by using asymmetric milling cutter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1291105B1 (en) * | 2001-09-10 | 2006-01-25 | Walter Ag | Cutting insert and milling tool |
| JP2007237302A (en) * | 2006-03-07 | 2007-09-20 | Mitsubishi Materials Corp | Cutter of crank pin miller |
| CN201008998Y (en) * | 2007-03-13 | 2008-01-23 | 哈尔滨飞机工业集团有限责任公司 | Form milling cutter of reverse-external R |
| CN201309018Y (en) * | 2008-12-04 | 2009-09-16 | 洛阳洛硬工工模数控有限公司 | Hard alloy indexable rail top slope cutting cutter |
| CN103182555A (en) * | 2011-12-30 | 2013-07-03 | 江苏恒悦机械有限公司 | Special purpose machine for three-side milling of crankshaft |
-
2013
- 2013-07-26 CN CN201310318441.1A patent/CN104339010B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1291105B1 (en) * | 2001-09-10 | 2006-01-25 | Walter Ag | Cutting insert and milling tool |
| JP2007237302A (en) * | 2006-03-07 | 2007-09-20 | Mitsubishi Materials Corp | Cutter of crank pin miller |
| CN201008998Y (en) * | 2007-03-13 | 2008-01-23 | 哈尔滨飞机工业集团有限责任公司 | Form milling cutter of reverse-external R |
| CN201309018Y (en) * | 2008-12-04 | 2009-09-16 | 洛阳洛硬工工模数控有限公司 | Hard alloy indexable rail top slope cutting cutter |
| CN103182555A (en) * | 2011-12-30 | 2013-07-03 | 江苏恒悦机械有限公司 | Special purpose machine for three-side milling of crankshaft |
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| Publication number | Publication date |
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| CN104339010A (en) | 2015-02-11 |
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