CN101574744B - Method for processing shaft with small eccentricity - Google Patents
Method for processing shaft with small eccentricity Download PDFInfo
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- CN101574744B CN101574744B CN 200910069335 CN200910069335A CN101574744B CN 101574744 B CN101574744 B CN 101574744B CN 200910069335 CN200910069335 CN 200910069335 CN 200910069335 A CN200910069335 A CN 200910069335A CN 101574744 B CN101574744 B CN 101574744B
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- circle
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Abstract
The invention relates to a method for processing a shaft with small eccentricity, which comprises the steps of processing a shaft blank and lathing a centric circle roughly and is characterized in that the process of the technique for processing the shaft with small eccentricity is as follows: an eccentric circle is roughly lathed; a point deviated from the center of the centric circle for a certain distance is taken as the center of the eccentric circle; a threaded hole is marked, drilled and tapped on the left end surface of the shaft; a threaded hole is drilled and tapped at a position deviating from the central line with the same distance on the right end surface of the shaft; a left card plate and a right card plate are respectively fixed on the left end surface and the right end surface of the shaft blank; and pin-hinging holes are drilled at the left card plate and the right card plate respectively. Both ends of a shaft assembly are provided with a special pallet which is fixed on the shaft assembly stably with bolts and pins; the eccentric holes on various pallets are used when the eccentric part is processed; the position of the bolts and the pin-hinging holes on the shaftassembly determines the eccentricity of the shaft assembly; and after the one-off survival of the centric shaft surface and the end surfaces is completed, the pallets are used for assisting to proces s the survival of the eccentric part; therefore, the technique process is completed. The method has the advantages of simplifying processing procedures, saving raw materials, improving the efficiency of mass production and ensuring the quality of workpieces.
Description
Technical field
The invention belongs to field of machining, particularly relate to a kind of processing method of shaft with small eccentricity.
Background technology
Eccentric shaft is one of part important and common in the various machineries, and difficulty of processing is big, waste is big, is the emphasis brainstorm subject in the turning processing, as the bent axle of automobile crane and various diesel engines always.At present, for shaft with small eccentricity because just, inclined to one side two pairs of centre bores are at a distance of nearer, can't just process simultaneously, inclined to one side two pairs of centre bores and the axle time processing is survived, and cause complex process loaded down with trivial details, the processing cost height.Is example with milling train with the processing and manufacturing scheme of three rollers centering eccentric shaft, the path φ 126mm of three rollers centering eccentric shaft maximum diameter φ 164mm, long 862mm, respectively there is place off-centre operation in the same way at two ends, the left and right sides, and eccentric throw only has 2.5mm, can't adopt two pairs of centre bore processing of positively biased.Crux in view of the above, traditional handicraft must increase 50mm at least with blank, elder generation's planar end surface (every end face stays the 20mm surplus), bore positive centre bore, rough turn positive axle, planar end surface (is removed positive centre bore again, every end face stays the 15mm surplus), bore the partial center hole, rough turn and finish turning eccentric shaft, and then planar end surface (is removed the partial center hole, every end face stays the 10mm surplus), bore positive centre bore, the positive axle of finish turning and grinding, then planar end surface (is removed positive centre bore, every end face stays the 5mm surplus), bore the partial center hole, the mill eccentric shaft reaches the drawing requirement, last planar end surface reaches the drawing requirement, with partial center hole, place to go.Every preface drill centers must be processed by digital-control boring-milling machine, to guarantee offset.Produce shaft with small eccentricity according to above-mentioned traditional handicraft, complex procedures, work step are loaded down with trivial details, have increased expending of unnecessary cutting output, difficulty of processing, personnel and lathe etc., cause the process-cycle to prolong, and the processing cost and the steel alloy cost of raw material increase severely.
Summary of the invention
The present invention provides a kind of economy batch process processing method of shaft with small eccentricity efficiently for solving the technical problem that exists in the known technology.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is:
The processing method of shaft with small eccentricity comprises processing shaft blank and rough turn center circle, it is characterized in that: the technical process of processing shaft with small eccentricity also comprises:
(1) rough turn off-centre operation: on the basis that rough turn center circle and end face survive, a, on the axle both ends of the surface, draw the center line and the parallel of the positive center circle of axle, require line direction unanimity on the both ends of the surface, bore positive centre bore, be the center of circle with the eccentric 2.5mm distance in center, positive centre bore place simultaneously, draw in the axle left side, brill, tapping hole, center line is drawn at equidirectional disalignment same distance place in its right side and left side, draws on this center line, brill, tapping hole; B, with screw with have on its center line the left clamp that is shaped on the partial center hole on several through holes that are used for mounting screw, its center of circle be fixed on the axle the left side, the right side that several are used for the through hole of mounting screw, the right clamp that wherein is shaped on the partial center hole in the heart is fixed on axle will be had on its center line, on left clamp and right clamp, bore respectively, cut with scissors 2 pin-and-holes, and locate with straight pin; C, according to the centre bore on the clamp, behind the centering workpiece, rough turn each off-centre operation is reserved allowance, removes clamp;
(2) heat treatment: carry out modifier treatment;
(3) fine finishining: a, finish turning are repaiied and are ground positive centre bore, each center circle of half finish turning and finish turning, the cylindrical single face stays grinding allowance, at the two ends of axle clamp is installed, and checks the offset of clamp and axle with dial gauge, repair and grind centre bore on the clamp, each off-centre operation of half finish turning and finish turning, the cylindrical single face stays grinding allowance; B, grinding: each surface of grinding axle, satisfy size and roughness requirement;
(4) subsequent treatment: a, mill: mill out groove in the axle right part, and frock is removed with the hole; B, pincers: process all the other each holes, simultaneously each clamp is removed with the hole.
The present invention also comprises following technical scheme:
Described left clamp is discoid.
Described right clamp is a cuboid.
Advantage and good effect that the present invention has are: the present invention adopts technique scheme, utilize a left side, right clamp solves in the process of shaft with small eccentricity and can't just process simultaneously because of eccentric throw is too small, the problem of inclined to one side two pairs of centre bores, reduced turning repeatedly in the traditional handicraft, the work step of grinding, simplified production technology, taken leave of traditional time-consuming, effort, take material, reduced manufacturing cost, adopted a left side, right clamp, saved the secondary of centre bore and made, need not to reserve technique head, eccentric throw is located naturally and be need not to adjust, human factor is few, make the location more reliable, product precision and quality further improve, and have remarkable economic efficiency.Simultaneously, clamp design is ingenious, and clamp is made to measure according to product, and the structure of utilizing product itself is as the frock fixed factors, and can in following process unnecessary frock fixing hole be removed in the lump, kills two birds with one stone, and adds processing capacity.Two clamps are reusable, are applicable to the processing of shaft with small eccentricity in batches.The present invention is simple and efficient to handle, and the easy operating person grasps, and process thought is complete, improves the economic and social benefits, and has certain promotion value.
Description of drawings
Fig. 1 is a process basic step flow chart of the present invention;
Fig. 2 is the structural representation of shaft with small eccentricity of the present invention;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the right view of Fig. 2;
Fig. 5 is the left view of the shaft with small eccentricity among the step 1a of the present invention;
Fig. 6 is the right view of the shaft with small eccentricity among the step 1a of the present invention;
Fig. 7 is the left view of the shaft with small eccentricity among the step 1b of the present invention;
Fig. 8 is the right view of the shaft with small eccentricity among the step 1b of the present invention;
Fig. 9 is the left view of the shaft with small eccentricity among the step 4a of the present invention;
Figure 10 is a left clamp structural representation of the present invention;
Figure 11 is a right clamp structural representation of the present invention.
Among the figure: 1, shaft with small eccentricity; 1-1, off-centre operation; 1-2, left side screwed hole; 1-3, left side pin-and-hole; 1-4, right side screwed hole; 1-5, groove; 1-6, positive centre bore; 2, left clamp; 2-1, partial center hole; 2-2, through hole; 2-3, pin-and-hole; 3, right clamp; 3-1, partial center hole; 3-2, through hole; 3-3, pin-and-hole.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1-Figure 11, the invention process example, a kind of processing method of shaft with small eccentricity:
Is example with milling train with the processing and manufacturing scheme of three rollers centering eccentric shaft 1,
The processing shaft blank, blanking: proofread and correct on hacksawing machine, sawing is of a size of
Round steel, material is 42CrMo; Rough turn blank center circle: utilize single angle gauge to ask the center of circle of end face, rough turn blank cylindrical, the car total length survives, and bores positive centre bore 1-6, adopts a folder one top formula to be installed, and utilizes rough turn each cylindrical of centre frame tune method, the monolateral 2mm allowance that stays.
See also Figure 10, left clamp 2 is discoid, diameter 150mm, and thick 20mm has 2 diameters that are used for mounting screw apart from center of circle 47.5mm place symmetry and is on the center line of left clamp 2
Through hole 2-2, be shaped on partial center hole 2-1 on the center of circle of left clamp 2, centre bore standard GB/T145-2001, centre drill size φ 2.5.
See also Figure 11, right clamp 3 is a cuboid, long 120mm, and wide 40mm, high 20mm has 2 diameters that are used for mounting screw in the 45mm place, distance between center line center of right clamp 3 symmetry and is
Through hole 3-2, be shaped on partial center hole 3-1 in the right clamp 3 in the heart, partial center hole standard GB/T145-2001, centre drill size φ 2.5.
1, rough turn off-centre operation:
A, carry out pincers worker operation: on the shaft blank both ends of the surface, draw axle 1 a positive center circle center line and a parallel, eccentric 2.5mm is the center of circle with the round heart in positive center, on 45 ° of center lines of right avertence of its left side, draw, bore, attack the symmetrical screwed hole 1-2 of 2 dark 35mm of M24 apart from center of circle 47.5mm place, draw center line at right side and left side equidirectional disalignment 2.5mm place, at the symmetrical screwed hole 1-4 that draws, bores, attacks 2 dark 10mm of M16 on this center line in the distance center 45mm place.
B, the left clamp 2 that is shaped on A type centre bore 2-1 on it is fixed on axle 1 the left side, the right clamp 3 that is shaped on partial center hole 3-1 on it is fixed on the right side of shaft blank with screw, on left clamp 2 with through hole 2-2 be wired to 90 ° with circle place symmetry bore, hinge
Pin-and-hole 2-3, on right clamp 3 with through hole 3-2 line apart from 10mm, with central cross apart from the symmetrical brill in 25mm place, the hinge
Pin-and-hole 3-3, the degree of depth of pin-and-hole 2-3 and 3-3 is 30mm, greater than the 20mm thickness of clamp 2 and 3, remaining 10mm pin-and-hole deeply on axle 1, with straight pin with clamp 2 and 3 and axle 1 location.
C, according to partial center hole 2-1 and 3-1 on left clamp 2 and the right clamp 3, behind the centering workpiece, rough turn each off-centre operation, the monolateral 2mm allowance that stays is removed the left clamp 2 at axle 1 both ends and right clamp 3 then.
2, heat treatment: carry out modifier treatment, guarantee that hardness is HB241～280.
3, fine finishining:
A, finish turning: repair and grind positive centre bore 1-6, each center circle of half finish turning and finish turning, the cylindrical single face stays grinding allowance 0.2mm, again left clamp 2 and right clamp 3 are installed in the both ends of axle 1 respectively, check offset 2.5mm with dial gauge, repair the partial center hole 2-1 and the 3-1 that grind on left clamp 2 and the right clamp 3, each off-centre operation of half finish turning and finish turning, the cylindrical single face stays grinding allowance 0.2mm.
B, grinding: each surface of grinding, satisfy the roughness requirement of each size and 3.2 μ m.
4, subsequent treatment:
A, mill: the groove 1-5 of axle right part is milled out, and frock is removed with the hole.
B, pincers: all the other each holes on the processing axle 1, simultaneously frock is removed with the hole.
Claims (3)
1. the processing method of a shaft with small eccentricity comprises processing shaft blank and rough turn center circle, it is characterized in that: the technical process of processing shaft with small eccentricity also comprises:
(1) rough turn off-centre operation: on the basis that rough turn center circle and end face survive, a, on the axle both ends of the surface, draw the center line and the parallel of the positive center circle of axle, require line direction unanimity on the both ends of the surface, bore positive centre bore, be the center of circle with the eccentric 2.5mm distance in center, positive centre bore place simultaneously, draw in the axle left side, brill, tapping hole, center line is drawn at equidirectional disalignment same distance place in its right side and left side, draws on this center line, brill, tapping hole; B, with screw with have on its center line the left clamp that is shaped on the partial center hole on several through holes that are used for mounting screw, its center of circle be fixed on the axle the left side, the right side that several are used for the through hole of mounting screw, the right clamp that wherein is shaped on the partial center hole in the heart is fixed on axle will be had on its center line, on left clamp and right clamp, bore respectively, cut with scissors 2 pin-and-holes, and locate with straight pin; C, according to the centre bore on the clamp, behind the centering workpiece, rough turn each off-centre operation is reserved allowance, removes clamp;
(2) heat treatment: carry out modifier treatment;
(3) fine finishining: a, finish turning are repaiied and are ground positive centre bore, each center circle of half finish turning and finish turning, the cylindrical single face stays grinding allowance, at the two ends of axle clamp is installed, and checks the offset of clamp and axle with dial gauge, repair and grind centre bore on the clamp, each off-centre operation of half finish turning and finish turning, the cylindrical single face stays grinding allowance; B, grinding: each surface of grinding axle, satisfy size and roughness requirement;
(4) subsequent treatment: a, mill: mill out groove in the axle right part, and frock is removed with the hole; B, pincers: process all the other each holes, simultaneously each clamp is removed with the hole.
2. the processing method of shaft with small eccentricity according to claim 1, it is characterized in that: described left clamp is discoid.
3. the processing method of shaft with small eccentricity according to claim 1, it is characterized in that: described right clamp is a cuboid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910069335 CN101574744B (en) | 2009-06-19 | 2009-06-19 | Method for processing shaft with small eccentricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910069335 CN101574744B (en) | 2009-06-19 | 2009-06-19 | Method for processing shaft with small eccentricity |
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| Publication Number | Publication Date |
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| CN101574744A CN101574744A (en) | 2009-11-11 |
| CN101574744B true CN101574744B (en) | 2010-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910069335 Expired - Fee Related CN101574744B (en) | 2009-06-19 | 2009-06-19 | Method for processing shaft with small eccentricity |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303128B (en) * | 2011-08-26 | 2013-04-24 | 天津市天发重型水电设备制造有限公司 | Method for making and machining eccentric combination pin |
| CN104227508A (en) * | 2013-06-20 | 2014-12-24 | 南京紫薇精密机械有限公司 | Machining method for improving ultra-accurate split spindle accuracy |
| CN103317150B (en) * | 2013-07-08 | 2015-12-09 | 东方电气集团东方汽轮机有限公司 | The cylindrical of shaft-like workpiece or the endoporus High-precision vehicle cutting method on Digit Control Machine Tool |
| CN103481040B (en) * | 2013-10-16 | 2015-09-30 | 青岛肯拉铎机械有限公司 | Crank processing technology |
| CN107350499A (en) * | 2017-08-16 | 2017-11-17 | 哈尔滨汽轮机厂有限责任公司 | A kind of eccentric pin processing method |
| CN109623648B (en) * | 2019-01-03 | 2020-03-17 | 武汉船用机械有限责任公司 | Processing method of shaft parts |
| CN114178558B (en) * | 2021-12-31 | 2023-07-25 | 湖北三江航天红阳机电有限公司 | Processing method of composite material revolving body |
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| EP1147838A1 (en) * | 2000-04-20 | 2001-10-24 | Index-Werke Gmbh & Co. Kg Hahn & Tessky | Machine tool and chuck |
| JP2005205505A (en) * | 2004-01-20 | 2005-08-04 | Maruyama Mfg Co Ltd | Jig for lathe and lathe |
| CN1762624A (en) * | 2005-11-10 | 2006-04-26 | 贵州群建齿轮有限公司 | Process method of small eccentricity multi-eccentric and bidirectionally eccentric axle |
| CN101200041A (en) * | 2006-12-11 | 2008-06-18 | 上海建设路桥机械设备有限公司 | Multiple eccentric shaft processing method and using counterbalance and eccentric sleeve |
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2009
- 2009-06-19 CN CN 200910069335 patent/CN101574744B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1147838A1 (en) * | 2000-04-20 | 2001-10-24 | Index-Werke Gmbh & Co. Kg Hahn & Tessky | Machine tool and chuck |
| JP2005205505A (en) * | 2004-01-20 | 2005-08-04 | Maruyama Mfg Co Ltd | Jig for lathe and lathe |
| CN1762624A (en) * | 2005-11-10 | 2006-04-26 | 贵州群建齿轮有限公司 | Process method of small eccentricity multi-eccentric and bidirectionally eccentric axle |
| CN101200041A (en) * | 2006-12-11 | 2008-06-18 | 上海建设路桥机械设备有限公司 | Multiple eccentric shaft processing method and using counterbalance and eccentric sleeve |
Non-Patent Citations (5)
| Title |
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| 叶安英.普通车床上车削偏心工件的简易装置.《邢台职业技术学院学报》.2003,20(3),59-60. * |
| 张翠端 等.偏心工件的车削加工.《内燃机配件》.2005,(1),32-33. |
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| CN101574744A (en) | 2009-11-11 |
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Granted publication date: 20101006 Termination date: 20120619 |