CN106270678A - The method for milling of the connecting rod neck of bent axle and milling attachment - Google Patents
The method for milling of the connecting rod neck of bent axle and milling attachment Download PDFInfo
- Publication number
- CN106270678A CN106270678A CN201510244202.5A CN201510244202A CN106270678A CN 106270678 A CN106270678 A CN 106270678A CN 201510244202 A CN201510244202 A CN 201510244202A CN 106270678 A CN106270678 A CN 106270678A
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- China
- Prior art keywords
- connecting rod
- rod neck
- milling
- axis
- drive shaft
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Classifications
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- 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
Abstract
The method for milling of the connecting rod neck of bent axle and milling attachment, this method for milling is included in the built-in coordinate system of plane being perpendicular to trunnion (12) axle center；Measure trunnion neck to edge at two Y-axis coordinates of same X-axis coordinate position, to calculate the Y-axis coordinate yc in trunnion axle center；Gauge head (20) is placed in Y-axis coordinate yc, when connecting rod neck (14) rotates clockwise touching gauge head, the rotational coordinates angle of drive shaft is α, when connecting rod neck rotates counterclockwise touching gauge head, the rotational coordinates angle of drive shaft is β, calculates the machining benchmark angle of connecting rod neck；Cutter (30) is placed in yc position, controls drive shaft and go to machining benchmark angle, θ；Setting connecting rod neck axis when yc position as processing original position, according to the drive shaft anglec of rotation, control cutter, in X-axis and the position of Y-axis, makes the contact point vertical line paralleled by X axis to axle center of cutter and connecting rod neck, and milling connecting rod neck.This processing method can be quickly and accurately positioned the machining benchmark coordinate of connecting rod neck.
Description
Technical field
The present invention relates to the milling technology field of the connecting rod neck of bent axle, particularly relate to method for milling and the bent axle of the connecting rod neck of bent axle
The milling attachment of connecting rod neck.
Background technology
As the main rotation member of engine, bent axle includes trunnion and connecting rod neck, and in work, connecting rod neck can turn around trunnion
Dynamic, and after the connecting rod neck of bent axle connects connecting rod, the straight reciprocating motion of connecting rod can be become the rotary motion of self.
In the milling process of bent axle, the processing of connecting rod neck is difficult point.
Summary of the invention
It is an object of the invention to provide the milling method of the connecting rod neck of a kind of bent axle, it can be quickly and accurately positioned bent axle
The machining benchmark coordinate of connecting rod neck.
The invention provides the method for milling of the connecting rod neck of a kind of bent axle.Crankshaft installed can be driven in a drive shaft, drive shaft
Bent axle rotates, and makes the trunnion of bent axle and connecting rod neck all rotate with trunnion axle center, and method for milling includes: be perpendicular at one
Coordinate system is set up, with a direction in this plane as X-axis, to be perpendicular to X in this plane in the plane in trunnion axle center
One direction of axle is Y-axis；The neck of measurement trunnion is two Y-axis coordinate y1 under same X-axis coordinate position to edge
And y2, to calculate Y-axis coordinate yc=(y1+y2)/2 in trunnion axle center；One gauge head is placed in the position of Y-axis coordinate yc
Putting place, control drive shaft drivening rod neck and rotate clockwise, during connecting rod neck touching gauge head, the rotational coordinates angle of drive shaft is α,
Controlling drive shaft drivening rod neck to rotate counterclockwise, during connecting rod neck touching gauge head, the rotational coordinates angle of drive shaft is β, calculates
Go out machining benchmark angle, θ=(alpha+beta)/2 of connecting rod neck；One cutter is placed in the position of a Y-axis coordinate yc, controls
Drive shaft turns is to machining benchmark angle, θ；Set connecting rod neck with initial as processing during drive shaft turns to machining benchmark angle, θ
Position, drive shaft starts to rotate an angle from machining benchmark angle, θ, according to this Angle ambiguity cutter in X-axis and Y-axis
Position, makes the contact point of cutter and connecting rod neck be parallel to X-axis, and milling connecting rod neck to the vertical line in trunnion axle center.
Said method is simple, can position the machining benchmark coordinate of the connecting rod neck of bent axle quickly and accurately.
In a kind of exemplary embodiment of the method for milling of the connecting rod neck of bent axle, drive shaft is from the beginning of machining benchmark angle, θ
While rotating a decile angle, control cutter and make in the position of X-axis and Y-axis the cutter contact point with connecting rod neck to axle center
Vertical line be parallel to X-axis, and milling connecting rod neck all the time.This milling control method can be easy the milling being continuously finished connecting rod neck
Cut work.
In a kind of exemplary embodiment of the method for milling of the connecting rod neck of bent axle, set milling feed amount as Linc, set
The radius of connecting rod neck is LR1, sets a length of LR in trunnion axle center to the axle center of connecting rod neck, sets connecting rod neck around main shaft
The decile angle of neck axis rotation is a,
Then cutter is Lx=LR+LR1-(LR × cos (a)+(LR1-Linc)) in X-direction displacement, in Y direction
Displacement is Ly=LR × sin (a).Above-mentioned displacement computational methods rapid and convenient, is adapted to computer programming control.
Present invention also offers the milling attachment of the connecting rod neck of a kind of bent axle, it can perform above-mentioned method for milling, milling attachment bag
Including a Digit Control Machine Tool, Digit Control Machine Tool includes a drive shaft, a cutter and a gauge head.Drive shaft can band dynamic crankshaft
Rotate, cutter can the connecting rod neck of milling bent axle, gauge head is for measuring the Y-axis coordinate in trunnion axle center, and measures drive shaft
Rotational coordinates angle [alpha] and β.
Hereafter by the way of the most understandable, accompanying drawings preferred embodiment, to the method for milling of the connecting rod neck of bent axle and
Above-mentioned characteristic, technical characteristic, advantage and the implementation thereof of milling attachment are further described.
Accompanying drawing explanation
The present invention is only schematically illustrated and explains by the following drawings, not delimit the scope of the invention.
Fig. 1 is in order to illustrate the schematic diagram of the Milling Process position of the connecting rod neck of bent axle；
Fig. 2 catches up with the flow chart of the milling method of neck in order to the company that bent axle is described；
Fig. 3 is in order to illustrate the trunnion axle center coordinate position measuring principle figure in Y direction of bent axle；
Fig. 4 is in order to illustrate the measuring principle figure of the machining benchmark angle, θ of the connecting rod neck of bent axle；
Fig. 5 is in order to illustrate the schematic diagram calculation of the machining benchmark angle, θ of the connecting rod neck of bent axle；
Fig. 6 is in order to illustrate the Milling Principle figure of the connecting rod neck of bent axle.
Label declaration
10 bent axles
12 trunnions
14 connecting rod necks
20 gauge heads
30 cutters
The C drive shaft centre of gyration, the axle center of trunnion
S41 sets up coordinate system
S42 measures the Y-axis coordinate in trunnion axle center
S43 measures machining benchmark angle
S44 controls cutter and connecting rod neck to benchmark Working position
S45 milling connecting rod neck.
Detailed description of the invention
In order to technical characteristic, purpose and the effect of invention are more clearly understood from, the now tool of the comparison accompanying drawing explanation present invention
Body embodiment, the most identical label represents that structure is identical or structure is similar but parts that function is identical.
In this article, " schematically " expression " serves as example, example or explanation ", " should not show being described herein as
Meaning property " any diagram, embodiment be construed to a kind of preferred or more advantage technical scheme.
For making simplified form, only schematically show part related to the present invention in each figure, they do not represent it and make
Practical structures for product.It addition, for making simplified form readily appreciate, some figure has the portion of identical structure or function
Part, only symbolically depicts one of them, or has only marked one of them.
As it is shown in figure 1, bent axle 10 includes a plurality of trunnion 12 and a plurality of connecting rod neck 14, adding man-hour can be by bent axle 10
It is fixed on the chuck of a lathe and (figure is not drawn into), make the centre of gyration axially along machine chuck of trunnion 12 arrange,
Bent axle 10 can be installed on a drive shaft (being not drawn in figure) of lathe by chuck, and this drive shaft can drive song by chuck
Trunnion 12 and the connecting rod neck 14 of axle 10 rotate around trunnion axle center C.
Participate in Fig. 2, Fig. 2 in order to the milling process of the connecting rod neck 14 of bent axle 10 to be described the most simultaneously, bent axle 10 is fixed on machine
After Chuan.
Initially enter step S41, set up coordinate system.
Coordinate system is set up in a plane being perpendicular to trunnion 12 axle center C, with a direction in this plane as X-axis,
The direction of X-axis it is perpendicular to as Y-axis in this plane.Wherein, as it is shown on figure 3, X-direction and Y direction can be used for
Representing the direction that machine tool controls, the X-axis of its coordinate system favours horizontal direction, the difference certainly needed according to design,
The direction of X-axis and Y-axis is not limited thereto.It addition, with axle center C and the centre of gyration of drive shaft of trunnion 12 in figure
As a example by coincidence, the axle center of connecting rod neck 14 circular trace shown in dotted line can turn to around the axle center C of trunnion 12 along figure
Each position.In a schematic embodiment, the axle center C of trunnion 12 is misaligned with the centre of gyration of drive shaft.
Step S42, measures the Y-axis coordinate in trunnion axle center.
An available gauge head 20, as it is shown on figure 3, the X-axis coordinate position of the location of this gauge head 20 controls at main shaft
The axle center C of neck 12 is between the maximum X-axis coordinate position of trunnion.During measurement, control gauge head 20 along rail shown in arrow
Mark moves.Control the gauge head 20 A point from the edge of side touching trunnion 12, the Y-axis coordinate of A point during record touching
Y1, then moves the opposite side of gauge head 20 to trunnion 12, makes gauge head 20 touch the B point at edge of trunnion 12, really
The X-axis coordinate protecting B point is identical with the X-axis coordinate of A point, Y-axis coordinate y2 during record touching.I.e. measure trunnion
The neck of 12 is two Y-axis coordinate y1 and y2 under same X-axis coordinate position (corresponding A, B touch points respectively) to edge,
With the axial line C that calculates trunnion 12 the coordinate figure of Y direction as yc=(y1+y2)/2, Y-axis coordinate yc can make
Machining benchmark position for the Y direction of machine tool.It should be noted that the seat of the X-direction of touch points A and B
The absolute value of the difference of the coordinate of the X-direction of the axial line C of mark and trunnion 12 is less than the radius of trunnion 12.
Step S43, measures machining benchmark angle.
Can referring also to Fig. 4, it is the position of yc that gauge head 20 is positioned a Y-axis coordinate, gauge head 20 and trunnion 12
Axle center C between distance L, distance LR of axle center C less than connecting rod neck axle center D to trunnion 12 is plus connecting rod neck
The sum of radius LR1, i.e. L < LR+LR1, to drive song clockwise in drive shaft with trunnion axle center C for center of rotation
After axle 10, the edge E of connecting rod neck 14 can be made to touch gauge head 20, during this touch position, drive shaft has a rotational coordinates angle
Degree is α, and rotating driveshaft band dynamic crankshaft 10 rotates counterclockwise again, makes the edge F of connecting rod neck 14 touch gauge head 20, should
During touch position, drive shaft has a rotational coordinates angle is β, referring also to Fig. 5, Fig. 5 can show and return with drive shaft
Turn the polar coordinate system that center C is limit, with denotation coordination angle [alpha] and β, connecting rod neck 14 can be calculated by α and β
Machining benchmark angle, θ, θ=(alpha+beta)/2.Rotate drive shaft to machining benchmark angle, θ so that bent axle 10 is around master
When axle journal 12 axle center C turns to machining benchmark position, it is (actual that the y-axis coordinate of connecting rod neck 14 axle center D should be equal to yc
Operation allows there is error), and in this, as the machining benchmark position of connecting rod neck 14.
Step S44, controls cutter and connecting rod neck to machining benchmark position.
One cutter (30) is placed in a Y-axis coordinate is the position of yc, now cutter 30 apart from trunnion axle center C away from
From the distance LR sum plus the radius LR1 of connecting rod neck that should be greater than connecting rod neck axle center D to trunnion axle center C；Control to drive
Axle turns to machining benchmark angle, θ so that bent axle 10 turns to machining benchmark position around trunnion 12 axle center C, now connects
The y-axis coordinate of bar neck 14 axle center D is equal to yc.
Step S45, milling connecting rod neck.
Setting described connecting rod neck 14 with drive shaft turns to machining benchmark angle, θ, connecting rod neck axis D is at the seat of Y direction
Mark is equal to during yc being processing original position.In processing original position, cutter 30 need to be made to be tangential on the periphery of connecting rod neck 14,
Refer to the position of cutter 30 in Fig. 6 and the position of the connecting rod neck 14 of adjacent cutter.In the schematic embodiment of one,
Can control drive shaft and rotate decile angle a, the implication of decile angle is: be N part by an angle bisecting, every part of angle
Degree is decile angle, if milling one week, then decile angle is 360 °/N.Decile angle a is rotated in drive shaft
While control cutter 30 in X-axis and the position of Y-axis, make cutter 30 contact point with connecting rod neck 14 to connecting rod neck 14
The vertical line of axle center D be parallel to X-axis, and milling connecting rod neck 14 all the time.If drive shaft rotates N number of decile angle, directly
The work of the milling to connecting rod neck 14 peripheral surface can be completed to rotating 360 degrees.In practical operation, decile angle can take one
The least individual angle, makes the cylindrical of connecting rod neck 14 complete milling by the method that line segment engages and works.Certainly, according to reality
The difference of milling demand, when the most only needing milling part surface, it is also possible to from the beginning of processing original position, drive shaft is direct
Rotate to the angle needed, then control cutter 30 and make contacting of cutter 30 and connecting rod neck 14 in the position of X-axis and Y-axis
Point is parallel to X-axis, the part surface of milling connecting rod neck 14 to the vertical line of the axle center D of connecting rod neck 14.
Wherein, the computational methods of machining coordinate are: set milling feed amount as Linc, set the radius of connecting rod neck as LR1,
Set a length of LR of trunnion 12 axle center C to the axle center D of connecting rod neck 14, set connecting rod neck 14 and turn around trunnion every time
Dynamic decile angle is a, as shown in Figure 6, when, after crank rotation a angle, cutter 30 is in the displacement of X-direction
Lx=LR+LR1-(L1+L2), wherein, L1=LR × cos (a), L2=LR1-Linc.Therefore the displacement of X-axis is Lx=LR+LR1-
(LR×cos(a)+(LR1-Linc)).When, after crank rotation a angle, cutter 30 is Ly=LR in the displacement of Y direction
×sin(a).As shown in Figure 6, connecting rod neck 14 rotates around trunnion 12 axle center C along with drive shaft, and cutter 30 can complete
Milling Process to connecting rod neck.
Present invention also offers the milling attachment of the connecting rod neck of a kind of bent axle, it can perform above-mentioned method for milling.Wherein milling
Device includes a Digit Control Machine Tool, and Digit Control Machine Tool includes a drive shaft, a cutter 30 and a gauge head 20.Wherein,
Drive shaft can rotate by band dynamic crankshaft, cutter 30 can milling bent axle, gauge head 20 is sat for the Y-axis measuring trunnion axle center
Mark yc and the rotational coordinates angle [alpha] of drive shaft and β.
It is to be understood that, although this specification describes according to each embodiment, but the most each embodiment only comprises one solely
Vertical technical scheme, this narrating mode of description is only that for clarity sake those skilled in the art should be by description
As an entirety, the technical scheme in each embodiment can also be through appropriately combined, and formation it will be appreciated by those skilled in the art that
Other embodiments.
The a series of detailed description of those listed above is only for illustrating of the possible embodiments of the present invention, they
And be not used to limit the scope of the invention, all equivalent embodiments made without departing from skill of the present invention spirit or change,
As feature combination, split or repeat, should be included within the scope of the present invention.
Claims (4)
1. the method for milling of the connecting rod neck of bent axle, is installed on a drive shaft by described bent axle (10), and described drive shaft can carry
Dynamic described bent axle (10) rotates, and makes the trunnion (12) of described bent axle (10) and connecting rod neck (14) all with described trunnion
(12) axle center rotates, and described method for milling includes:
Coordinate system is set up, with a direction in this plane as X in a plane being perpendicular to described trunnion (12) axle center
Axle, is perpendicular to a direction of described X-axis as Y-axis in this plane；
Measure the neck of described trunnion (12) to edge two Y-axis coordinate y1 and y2 under same X-axis coordinate position, with
Calculate Y-axis coordinate yc=(y1+y2)/2 in described trunnion (12) axle center；
One gauge head (20) is placed in a Y-axis coordinate is the position of yc, controls described drive shaft and drives described connecting rod neck (14)
Rotating clockwise, when described connecting rod neck (14) touches described gauge head (20), the rotational coordinates angle of described drive shaft is α, control
Making described drive shaft drives described connecting rod neck (14) to rotate counterclockwise, when described connecting rod neck (14) touches described gauge head (20)
The rotational coordinates angle of described drive shaft is β, calculates machining benchmark angle, θ=(alpha+beta)/2 of described connecting rod neck (14)；
One cutter (30) is placed in a Y-axis coordinate is the position of yc, controls described drive shaft turns to described machining benchmark
Angle, θ；
Set described connecting rod neck (14) with during described drive shaft turns to described machining benchmark angle, θ as processing original position, institute
State drive shaft to start to rotate an angle from described machining benchmark angle, θ, according to cutter (30) described in described Angle ambiguity at X
The position of axle and Y-axis makes the described cutter (30) contact point with described connecting rod neck (14) to described trunnion (12) axle center
Vertical line is parallel to X-axis, and connecting rod neck described in milling (14).
2. the method for milling of the connecting rod neck of bent axle as claimed in claim 1, wherein, described drive shaft is from described machining benchmark angle
While degree θ starts to rotate a decile angle, control described cutter (30) and make described cutter (30) in the position of X-axis and Y-axis
All the time X-axis, and connecting rod neck described in milling (14) it is parallel to the vertical line in the contact point extremely described axle center of described connecting rod neck (14).
3. the method for milling of the connecting rod neck of bent axle as claimed in claim 1, wherein,
Set described milling feed amount as Linc,
Set the radius of described connecting rod neck as LR1,
Set a length of LR in described trunnion axle center to the axle center of described connecting rod neck,
Set the connecting rod neck decile angle around described trunnion axis rotation as a,
The most described cutter (30) is Lx=LR+LR1-(LR × cos (a)+(LR1-Linc)) in X-direction displacement, at Y
Direction of principal axis displacement is Ly=LR × sin (a).
4. the milling attachment of the connecting rod neck of bent axle, it can perform method for milling as claimed any one in claims 1 to 3, institute
Stating milling attachment and include a Digit Control Machine Tool, described Digit Control Machine Tool includes:
One can drive the drive shaft that described bent axle (10) rotates；
One can the cutter (30) of connecting rod neck of bent axle described in milling；With
One gauge head (20), for measuring the Y-axis coordinate yc in described trunnion axle center, and the rotation measuring described drive shaft is sat
Mark angle [alpha] and β.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510244202.5A CN106270678B (en) | 2015-05-14 | 2015-05-14 | The method for milling and milling attachment of the connecting rod neck of bent axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510244202.5A CN106270678B (en) | 2015-05-14 | 2015-05-14 | The method for milling and milling attachment of the connecting rod neck of bent axle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106270678A true CN106270678A (en) | 2017-01-04 |
| CN106270678B CN106270678B (en) | 2018-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510244202.5A Active CN106270678B (en) | 2015-05-14 | 2015-05-14 | The method for milling and milling attachment of the connecting rod neck of bent axle |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109940207A (en) * | 2019-04-15 | 2019-06-28 | 德州德隆(集团)机床有限责任公司 | The method of macroprogram bias milling crank-shaft link neck |
| CN115625495A (en) * | 2022-09-20 | 2023-01-20 | 中国第一汽车股份有限公司 | V12 engine crankshaft machining method |
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| US2182228A (en) * | 1936-05-16 | 1939-12-05 | Leblond Mach Tool Co R K | Method of machining crankshafts |
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| CN103894929A (en) * | 2014-03-21 | 2014-07-02 | 上海大学 | Crankshaft grinding angle positioning and measuring method based on height gauge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109940207A (en) * | 2019-04-15 | 2019-06-28 | 德州德隆(集团)机床有限责任公司 | The method of macroprogram bias milling crank-shaft link neck |
| CN115625495A (en) * | 2022-09-20 | 2023-01-20 | 中国第一汽车股份有限公司 | V12 engine crankshaft machining method |
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| Publication number | Publication date |
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| CN106270678B (en) | 2018-01-23 |
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