CN109604655A - A kind of method for turning and Special Eccentric tooling of RV retarder crank axle off-centre operation - Google Patents
A kind of method for turning and Special Eccentric tooling of RV retarder crank axle off-centre operation Download PDFInfo
- Publication number
- CN109604655A CN109604655A CN201811398826.2A CN201811398826A CN109604655A CN 109604655 A CN109604655 A CN 109604655A CN 201811398826 A CN201811398826 A CN 201811398826A CN 109604655 A CN109604655 A CN 109604655A
- Authority
- CN
- China
- Prior art keywords
- tooling
- eccentric
- crank axle
- turning
- spline
- Prior art date
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B5/18—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning crankshafts, eccentrics, or cams, e.g. crankpin lathes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
Abstract
The advantages that the present invention relates to the method for turning and Special Eccentric tooling of a kind of RV retarder crank axle off-centre operation, by the way of three-jaw clamping, have method simple, and process is concentrated, and production cost is low, and element precision is high.Parts fixation method of the present invention is simple, and does not need complicated adjusting, high in machining efficiency.The present invention is using same eccentric tooling, so that angle reference and eccentricity are fixed, and then ensure that the good and eccentric precision for indexing 180 ° of the eccentricity consistency of two off-centre operations is high, meets the processing request of RV retarder crank axle.
Description
Technical field
The present invention relates to machine tooling technical field, the method for turning of especially a kind of RV retarder crank axle off-centre operation and
Special Eccentric tooling.
Background technique
Crank axle 4 (as shown in Figure 1) is the stress driving parts of robot RV retarder core, and primary structure includes
Opposed 180 ° of double off-centre operations 2 and 3 and the spline 1 of left end face.The manufacture difficult point of the part is to control double eccentric excircles
Dimensional accuracy, eccentricity machining accuracy, two eccentric 180 ° of indexing accuracies and the position precision of eccentric direction and end face spline.
More NC millings or follow-up precision lathe process, NC milling low efficiency are used now, and long processing time is servo-actuated
Although clamped one time, two off-centre operation simultaneous processings may be implemented in lathe, but equipment own cost is high, so using " conventional
Lathe+special tooling " becomes primary selection.Since there are also spline tooth phase passes corresponding with the angle of eccentric direction for crank axle
System guarantees so needing to consider the repetitive positioning accuracy of centering spline angle reference and parts fixation when designing special tooling
Two 180 ° of eccentric indexing.
Summary of the invention
In place of making up the deficiencies in the prior art, a kind of bias of RV retarder eccentric shaft is provided
The method for turning and clamping tooling of outer circle, meet the requirement on machining accuracy of crank axle.
The purpose of the present invention is what is realized by following technological means:
A kind of method for turning of RV retarder crank axle off-centre operation, it is characterised in that: the following steps are included:
(1) crank eccentric shaft tooling carries out clamping using three-jaw, and tooling right side is adjacent to three-jaw bottom surface, guarantees outside tooling
Each end face of portion's triangle is contacted with three clamp jaws, using the centripetal principle of three-jaw, guarantees tooling triangle inscribe
Round axle center is overlapped with main shaft rotation center；
(2) crank axle is inserted into crank eccentric shaft tooling by, and the diameter of axle of crank axle is contacted with inner bore of step, realizes the dress of part
Clamp position；Crank axle spline and tooling internal spline cooperation realize part angle positioning, guarantee crank axle spline positioning tooth with
The positioning tooth of tooling internal spline is overlapped；
(3) turning after the completion of turning, removes eccentric tooling and crank axle, extracts crank close to the eccentric excircle of spline side
Axis, and rotate 180 ° and be reentered into eccentric tooling, guarantee that the positioning tooth of crank axle spline is overlapped with the positioning tooth of tooling internal spline
It is separated by 180 °, the clamping step to repeat the above steps (1), and eccentric excircle of the turning far from spline side, it completes outside crank eccentric shaft
Round processing.
Moreover, step (3) in, when one end turning of eccentric shaft is completed, 180 ° of rotation is when being reentered into eccentric tooling
Positioning tooth confusion or uncertain situation are avoided the occurrence of, to be marked in the positioning tooth of the spline side of eccentric fixture and eccentric shaft
It is fixed.
Moreover, the inside of the eccentric tooling is equipped with internal spline and inner bore of step, the internal spline and inner bore of step are coaxial
It setting and is interconnected, the outer shape of eccentric tooling is triangle, and the axis in the axle center of triangle inscribed circle and inner bore of step
The heart is not coaxial.
Moreover, the eccentric tooling arranges open slot in tossing about for eccentric direction.
The advantages and positive effects of the present invention are:
1, the present invention devises the double eccentric frock clamps of grinding RV retarder crank axle, which may be implemented two bias
The high-precision turnery processing of outer circle, while being furnished with spline positioning function, it ensure that off-centre operation is corresponding with the angle of spline and require, it is full
The foot processing request of RV retarder crank axle.
2, parts fixation method of the present invention is simple, and does not need complicated adjusting, high in machining efficiency.Using same bias
Tooling so that angle reference and eccentricity are fixed, and then guarantees good and eccentric 180 ° of the indexing of the eccentricity consistency of two off-centre operations
Precision it is high.The present invention provides the method for turning and clamping tooling of a kind of eccentric excircle of RV retarder eccentric shaft, using three
The advantages that mode of pawl clamping has method simple, and process is concentrated, and production cost is low, and element precision is high.
Detailed description of the invention
Fig. 1 is the schematic diagram of RV retarder crank axle.
Fig. 2 is the schematic diagram of crank eccentric shaft tooling；
Fig. 3 is the diagrammatic cross-section of crank eccentric shaft tooling；
Fig. 4 is crank axle turning clamping schematic diagram.
Specific embodiment
With reference to the accompanying drawing in detail narration the embodiment of the present invention, it should be noted that the present embodiment be it is narrative, no
It is restrictive, this does not limit the scope of protection of the present invention.
Method to facilitate the understanding of the present invention first carries out the structure of Special Eccentric tooling used in this method detailed
It introduces:
As shown in Figures 2 and 3, the inside of eccentric tooling 5 is equipped with internal spline 6 and inner bore of step 9, in the internal spline and step
Hole is coaxially disposed and is interconnected, and guarantees that internal spline and inner bore of step are concentric.The outer shape of eccentric tooling is triangle, and three
The axle center of angular inscribed circle 7 and the axle center of inner bore of step be not coaxial, guarantees the axle center of triangle inscribed circle and the axis of inner bore of step
Heart distance is eccentricity.Eccentric tooling arranges open slot 8 in tossing about for eccentric direction simultaneously, guarantees that the clamping of part is stablized.
A kind of method for turning of RV retarder crank axle off-centre operation, comprising the following steps:
(1) crank eccentric shaft tooling carries out clamping using three-jaw, and tooling right side is adjacent to three-jaw bottom surface, guarantees outside tooling
Each end face of portion's triangle is contacted with three clamp jaws, using the centripetal principle of three-jaw, guarantees tooling triangle inscribe
Round axle center is overlapped with main shaft rotation center；
(2) crank axle is inserted into crank eccentric shaft tooling by, and the diameter of axle of crank axle is contacted with inner bore of step, realizes the dress of part
Clamp position；Crank axle spline and tooling internal spline cooperation realize part angle positioning, guarantee crank axle spline positioning tooth with
The positioning tooth of tooling internal spline is overlapped；
(3) the turning of elder generation after the completion of turning, removes eccentric tooling and crank axle close to the eccentric excircle of spline side, extracts bent
Arbor, and rotate 180 ° and be reentered into eccentric tooling, it, be in cam lock to avoid the occurrence of positioning tooth confusion or uncertain situation
The positioning tooth of the spline side of tool and eccentric shaft is demarcated, and guarantees the positioning tooth of crank axle spline and the positioning tooth of tooling internal spline
Coincidence is separated by 180 °, the clamping step to repeat the above steps (1), then eccentric excircle of the turning far from spline side, and it is inclined to complete crank axle
The processing of heart outer circle.
When three-jaw clamps eccentric tooling, due to needing multiple renewal part, so tooling bite may be worn,
So using Multi-contact or line contact when should guarantee clamping as far as possible.
The present invention relates to the turning manufacturing methods of the double off-centre operations of RV retarder crank axle, provide a kind of using conventional turning
Lathe realizes the process program that double off-centre operations are processed with sequence, and a certain fixed spline tooth is used in simultaneous processing tooling to position base
Standard, and eccentricity uses identical control benchmark, it is ensured that the phase requirements and two eccentric excircle eccentricity of spline and off-centre operation
Dimensional uniformity.
The invention belongs to machine tooling technical field, when practical operation, using the direct gripper crank eccentric shaft tooling of three-jaw
Three faces of the external triangular of (as shown in Figures 2 and 3), are inserted into crank axle and clamp three-jaw, utilize three-jaw centering
Principle realizes the eccentric clamping of crank axle.
Claims (4)
1. a kind of method for turning of RV retarder crank axle off-centre operation, it is characterised in that: the following steps are included:
(1) crank eccentric shaft tooling carries out clamping using three-jaw, and tooling right side is adjacent to three-jaw bottom surface, guarantees three outside tooling
Angular each end face is contacted with three clamp jaws, using the centripetal principle of three-jaw, guarantees tooling triangle inscribed circle
Axle center is overlapped with main shaft rotation center；
(2) crank axle is inserted into crank eccentric shaft tooling by, and the diameter of axle of crank axle is contacted with inner bore of step, realizes that the clamping of part is fixed
Position；The angle positioning of part is realized in crank axle spline and the cooperation of tooling internal spline, guarantees the positioning tooth and tooling of crank axle spline
The positioning tooth of internal spline is overlapped；
(3) turning after the completion of turning, removes eccentric tooling and crank axle close to the eccentric excircle of spline side, extracts crank axle, and
180 ° of rotation is reentered into eccentric tooling, guarantees that the positioning tooth of crank axle spline is overlapped with the positioning tooth of tooling internal spline and is separated by
180 °, the clamping step to repeat the above steps (1), and eccentric excircle of the turning far from spline side, complete crank axle eccentric excircle
Processing.
2. a kind of method for turning of RV retarder crank axle off-centre operation according to claim 1, it is characterised in that: in step
(3) in, when one end turning of eccentric shaft is completed, 180 ° of rotation is when being reentered into eccentric tooling, for avoid the occurrence of positioning tooth it is chaotic or
Uncertain situation will be demarcated in the positioning tooth of the spline side of eccentric fixture and eccentric shaft.
3. the eccentric tooling of RV retarder crank axle off-centre operation used in a kind of method for turning as described in claim 1, special
Sign is: the inside of the eccentric tooling be equipped with internal spline and inner bore of step, the internal spline and inner bore of step coaxial arrangement and
It is interconnected, the outer shape of eccentric tooling is triangle, and the axle center of triangle inscribed circle is different from the axle center of inner bore of step
Axis.
4. a kind of eccentric tooling of RV retarder crank axle off-centre operation according to claim 3, it is characterised in that: described
Eccentric tooling arranges open slot in tossing about for eccentric direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811398826.2A CN109604655A (en) | 2018-11-22 | 2018-11-22 | A kind of method for turning and Special Eccentric tooling of RV retarder crank axle off-centre operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811398826.2A CN109604655A (en) | 2018-11-22 | 2018-11-22 | A kind of method for turning and Special Eccentric tooling of RV retarder crank axle off-centre operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109604655A true CN109604655A (en) | 2019-04-12 |
Family
ID=66004402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811398826.2A Pending CN109604655A (en) | 2018-11-22 | 2018-11-22 | A kind of method for turning and Special Eccentric tooling of RV retarder crank axle off-centre operation |
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| CN (1) | CN109604655A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979216A (en) * | 2017-03-22 | 2017-07-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Decelerator crank axle and decelerator |
| CN110744334A (en) * | 2019-09-12 | 2020-02-04 | 珠海飞马传动机械有限公司 | RV speed reducer eccentric shaft machining device |
| CN114986251A (en) * | 2022-06-07 | 2022-09-02 | 中船动力镇江有限公司 | Method for processing connecting rod neck and crank arm of diesel engine crankshaft |
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| JP2005014167A (en) * | 2003-06-27 | 2005-01-20 | Hitachi Ltd | Processing method of shaft having a plurality of eccentric parts |
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| CN205996618U (en) * | 2016-08-13 | 2017-03-08 | 李守冰 | A kind of flange plate cylindrical turning fixture |
| CN106736322A (en) * | 2017-01-22 | 2017-05-31 | 重庆大学 | The manufacturing process of integrated full-complement cylinder roller crankshaft unit |
| CN107030495A (en) * | 2017-05-24 | 2017-08-11 | 烟台艾迪精密机械股份有限公司 | A kind of processing method of pair of eccentric fixture and double-eccentric shaft |
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| KR20030037623A (en) * | 2001-11-07 | 2003-05-14 | 현대자동차주식회사 | Dog for working cam shaft profile |
| JP2005014167A (en) * | 2003-06-27 | 2005-01-20 | Hitachi Ltd | Processing method of shaft having a plurality of eccentric parts |
| CN101306497A (en) * | 2007-05-17 | 2008-11-19 | 万向集团公司 | Trident shaft processing method and clamping device |
| CN204524841U (en) * | 2015-03-04 | 2015-08-05 | 上海大隆机器厂有限公司 | For the eccentric clamp of crank shaft of bent axle car eccentric throw processing |
| CN204639691U (en) * | 2015-05-06 | 2015-09-16 | 浙江森强机电制造有限公司 | A kind of boring eccentric orfice fixture |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979216A (en) * | 2017-03-22 | 2017-07-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Decelerator crank axle and decelerator |
| CN110744334A (en) * | 2019-09-12 | 2020-02-04 | 珠海飞马传动机械有限公司 | RV speed reducer eccentric shaft machining device |
| CN114986251A (en) * | 2022-06-07 | 2022-09-02 | 中船动力镇江有限公司 | Method for processing connecting rod neck and crank arm of diesel engine crankshaft |
| CN114986251B (en) * | 2022-06-07 | 2024-01-30 | 中船动力镇江有限公司 | Method for processing connecting rod neck and crank arm of diesel engine crankshaft |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201027 Address after: 300401 Tianjin Wind Power Industrial Park, Beichen District, Tianjin Applicant after: Tianjin 707 Technology Development Co., Ltd Address before: 300131 Tianjin Road, No. 1, No. 1, Hongqiao District Applicant before: CHINA SHIPBUILDING INDUSTRY CORPORATION NO.707 Research Institute |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20201110 Address after: No. 64, Gaoxin Avenue, science and Technology Park, Tianjin Beichen economic and Technological Development Zone, Beichen District, Tianjin Applicant after: Tianjin Qiling Electromechanical Technology Co., Ltd Address before: 300401 Tianjin Wind Power Industrial Park, Beichen District, Tianjin Applicant before: Tianjin 707 Technology Development Co., Ltd |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190412 |