CN1315606C - Method for machining high precision excircle dimension by general lathe - Google Patents
Method for machining high precision excircle dimension by general lathe Download PDFInfo
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- CN1315606C CN1315606C CNB200510057194XA CN200510057194A CN1315606C CN 1315606 C CN1315606 C CN 1315606C CN B200510057194X A CNB200510057194X A CN B200510057194XA CN 200510057194 A CN200510057194 A CN 200510057194A CN 1315606 C CN1315606 C CN 1315606C
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Abstract
The present invention discloses a method for machining high-precision excircle dimensions by engine lathes. First, the graduations of a micrometer hoop of a mediate carriage of a lathe are determined according to the machining diameters of workpieces, the tail part of a little carriage of the lathe is successively clockwise rotated an angle of 2 DEG 52' or 5 DEG 44' according to feed values, the graduations of a micrometer hoop of the little carriage are then moved one tiny check in order to confirm cutting depth, the little carriage longitudinally feeds for cutting, and a tool bit adopts a rotary tool array holding clamp forming an edge inclination angle lambda s=45 DEG to 75 DEG. The method of the present invention has the advantages of simple operation and easy control, makes a common mechanic have the ability of using an engine lathe to finish excircle dimension machining accuracy which can be achieved through a numerical control lathe or rolling and grinding, and reduces production cost.
Description
Technical field
The present invention relates to the machining field, particularly a kind of method with engine lathe machining cylinder high precision excircle dimension.
Background technology
Usually under normal working condition, the skilled worker who is skilled in technique uses engine lathe machining cylinder excircle dimension, behind rough turn, half finish turning, finish turning, its economic accuracy grade can reach IT7～8, surface roughness is 0.8～1.6Ra/ μ m, and for more high-precision processing, just be difficult to reach with the engine lathe machining.This is that the depth of cut that is used to control thousand minutes of the horizontal mobile depth of cut of the middle carriage every little lattice of hoop because of engine lathe is generally 0.05mm or 0.02mm, when reducing depth of cut when needs raising machining accuracy, with every little lattice depth of cut is that 0.05mm or 0.02mm thousand minutes hoops are regulated control and just are not easy accurately to have grasped, so cause being difficult to realize high-precision machining with engine lathe.To high-precision excircle dimension processing, just need to adopt the accurate digital control machined into to realize, perhaps process and realize by modes such as roll extrusion or correct grindings.Outmoded or do not have to add expensive Digit Control Machine Tool for the enterprise of accurate digital control lathe for equipment, certainly will increase business burden; Especially under processing capacity is not very big situation, do not adopt lathe in machining, must cause processing cost to increase, influence economic benefit of enterprises, to one's profit really.And process by modes such as roll extrusion or correct grindings, its complex procedures, processing cost are also high.
Summary of the invention
The purpose of this invention is to provide a kind of method with the engine lathe machining high precision excircle dimension, adopt the method, general skilled worker also can finish the machining of cylinder high precision excircle dimension with engine lathe, cuts down finished cost.
The object of the present invention is achieved like this: the scale that bound round in thousand minutes of at first determining the middle carriage of lathe according to the processing diameter of workpiece, then according to the feed value with the upper slide rest afterbody of lathe to 2 ° 52 of clockwise direction rotational angle ' or 5 ° 44 ', again the scale of thousand minutes of upper slide rest hoops is moved little lattice and determine cutting depth, cut with the feed that vertically moves of saddle; Cutter adopts rotation blade row clamping to form the cutting edge inclination of s=45 °～75 ° of λ.
The angle that the upper slide rest afterbody rotates to clockwise direction adopts formula S in α=j/0.05 to calculate, and j represents the feed value in the formula.
The scale value of thousand fens hoops of upper slide rest is every little lattice 0.05mm.
Cutter employing anterior angle γ=5 °～2 5 °, cutting edge inclination is gone into the wide sword lathe tool of s=0.
Cutter is rotated counterclockwise 45 °～75 ° clampings around the knife bar axis.
Owing to adopted such scheme, at first determine the scale that bound round in thousand minutes of the middle carriage of engine lathe according to the processing diameter of cylindrical workpiece, then according to the feed value with the upper slide rest afterbody of lathe to 2 ° 52 of clockwise direction rotational angle ' or 5 ° 44 ', again the scale of thousand minutes of upper slide rest hoops is moved little lattice and determine cutting depth, the feed that vertically moves with saddle is cut, adjust the precision of crossing feed of middle carriage with vertically moving of upper slide rest, thereby obtain the micro-depth of cut.In view of the scale value of thousand minutes of upper slide rest hoops is generally every little lattice 0.05mm, the angle that the upper slide rest afterbody rotates to clockwise direction adopts formula S in α=j/0.05 to calculate, j represents the feed value in the formula, make upper slide rest determine rotational angle exactly according to required feed value, accurately to obtain the fine feed cutting depth, being difficult to the fine feed grasping and control before making on engine lathe can be simply, easily realize.The cutter of this method adopts rotation blade row clamping to be formed into s=45 °～75 ° cutting edge inclination, its cutter employing anterior angle γ=5 °～25 °, cutting edge inclination is gone into the wide sword lathe tool of s=0, cutter is rotated counterclockwise 45 °～75 ° clampings around the knife bar axis and forms oblique cutting, the direction that makes cutting speed V is no longer perpendicular to cutting edge, but along the direction of cutting edge a component velocity V arranged
a, make cutting edge with respect to workpiece except the effect of " cutting ", also have the effect of " cutting "; The flow direction of smear metal is also no longer perpendicular to cutting edge, but crossed 5 °～25 ° angles partially, so cutting force reduces, and cuts briskly, can finish micro cutting, makes workpiece obtain less surface roughness, improves the machining accuracy of cylindrical workpiece excircle dimension.
With the cylindrical workpiece of the method at the engine lathe machining high precision excircle dimension, make processing economic accuracy grade bring up to IT6～7, surface roughness is brought up to 0.4～0.8Ra/ μ m.
The inventive method is simple to operate, grasps easily, and general skilled worker also can be finished on engine lathe must reduce production cost by numerically controlled lathe or the cylinder excircle dimension machining accuracy that adopts roll extrusion, grinding to realize.
The invention will be further described below in conjunction with drawings and Examples.
Description of drawings
Accompanying drawing is the view of oblique cutting of the present invention.
The specific embodiment
With engine lathe machining high precision cylinder excircle dimension, at first determine the scale that bound round in thousand minutes of the middle carriage of lathe according to the processing diameter of workpiece, then according to the feed value with the upper slide rest afterbody of lathe to 2 ° 52 of clockwise direction rotational angle ' or 5 ° 44 ', the angle that the upper slide rest afterbody rotates to clockwise direction adopts formula S in α=j/0.05 to calculate, and j represents the feed value in the formula.Again the scale of thousand minutes of upper slide rest hoops is moved little lattice and determine cutting depth, the scale value of thousand fens hoops of upper slide rest is every little lattice 0.05mm.The feed that vertically moves with saddle is cut, and adjusts the precision of crossing feed of middle carriage with vertically moving of upper slide rest, thereby obtains the micro-depth of cut.Simultaneously, cutter employing anterior angle γ=5 °～25 °, cutting edge inclination is gone into the wide sword lathe tool of s=0, and the tool steel effect of tool selection W18Gr4V is good.Cutter is rotated counterclockwise 45 °～75 ° around the knife bar axis, adopts rotation blade row clamping to be formed into s=45 °～75 ° cutting edge inclination.
In the time will seeking out feed value to workpiece cutting and be 0.005mm, calculate according to formula
Sinα＝0.005/0.05＝0.1 α＝5°44′
With the upper slide rest afterbody to 5 ° 44 of clockwise direction rotational angle ', the scale of thousand fens hoops of upper slide rest whenever moves little lattice, laterally just can obtain the cutting depth of 0.005mm.
In like manner, in the time will seeking out feed value to workpiece cutting and be 0.0025mm, calculate according to formula
Sinα＝0.0025/0.05＝0.05 α＝2°52′
The upper slide rest afterbody to 2 ° 52 of clockwise direction rotational angle ', the scale of thousand fens hoops of upper slide rest whenever moves little lattice, laterally just can obtain the cutting depth of 0.0025mm.
The operator can be according to the requirement of machining accuracy grade, adjust 5 ° 44 of upper slide rest angle ' or 2 ° 52 ', realize the microfeed of cylinder excircle dimension cutting depth.
Simultaneously as shown in drawings, cutter employing anterior angle γ=10 °, the wide sword lathe tool of cutting edge inclination λ s=0, the tool steel cutter of tool selection W18Gr4V.This cutter is rotated counterclockwise 75 ° around cutter spindle bundle of lines lathe tool, and the cutting edge inclination that adopts rotation blade row clamping to form s=75 ° of λ forms oblique cutting.During cutting, the direction of cutting speed V is no longer perpendicular to cutting edge, but along the direction of cutting edge a component velocity V arranged
a, make cutting edge with respect to workpiece except the effect of " cutting ", also have the effect of " cutting "; The flow direction of smear metal is also no longer perpendicular to cutting edge, but crossed 10 ° of angles partially, and the anterior angle that cutter plays practical function is measured in comprising the cross section of chip-flowing and approximated 70 °, so cutting force reduces, and cuts briskly, can finish micro cutting.And this oblique cutting can also be controlled cutting and flow to work surface, makes cylindrical workpiece obtain less surface roughness, improves the machining accuracy of cylindrical workpiece.
Claims (4)
1. method with the engine lathe machining high precision excircle dimension, it is characterized in that: the scale that bound round in thousand minutes of at first determining the middle carriage of lathe according to the processing diameter of workpiece, then according to the feed value with the upper slide rest afterbody of lathe to 2 ° 52 of clockwise direction rotational angle ' or 5 ° 44 ', again the scale of thousand minutes of upper slide rest hoops is moved little lattice and determine cutting depth, cut with the feed that vertically moves of saddle; Cutter adopts rotation blade row clamping to form the cutting edge inclination of s=45 °～75 ° of λ.
2. the method with the engine lathe machining high precision excircle dimension according to claim 1 is characterized in that: the scale value of thousand fens hoops of upper slide rest is every little lattice 0.05mm.
3. the method with the engine lathe machining high precision excircle dimension according to claim 1 is characterized in that: cutter employing anterior angle γ=5 °～25 °, the wide sword lathe tool of cutting edge inclination λ s=0.
4. the method with the engine lathe machining high precision excircle dimension according to claim 1, it is characterized in that: cutter is rotated counterclockwise 45 °～75 ° clampings around the knife bar axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510057194XA CN1315606C (en) | 2005-07-29 | 2005-07-29 | Method for machining high precision excircle dimension by general lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510057194XA CN1315606C (en) | 2005-07-29 | 2005-07-29 | Method for machining high precision excircle dimension by general lathe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1730211A CN1730211A (en) | 2006-02-08 |
| CN1315606C true CN1315606C (en) | 2007-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510057194XA Expired - Fee Related CN1315606C (en) | 2005-07-29 | 2005-07-29 | Method for machining high precision excircle dimension by general lathe |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85205788U (en) * | 1985-12-30 | 1986-11-05 | 冉声扬 | Microcomputer-controlled lathe for processing motor spindle |
| CN1097155A (en) * | 1994-06-13 | 1995-01-11 | 北京探矿机械厂工会职工技术协作委员会 | Adjust the taper-turning method of small tool angle with dial gauge |
| CN2256353Y (en) * | 1996-08-21 | 1997-06-18 | 朱超 | Machine clamped angle 95 degree high speed fine turning tool |
-
2005
- 2005-07-29 CN CNB200510057194XA patent/CN1315606C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85205788U (en) * | 1985-12-30 | 1986-11-05 | 冉声扬 | Microcomputer-controlled lathe for processing motor spindle |
| CN1097155A (en) * | 1994-06-13 | 1995-01-11 | 北京探矿机械厂工会职工技术协作委员会 | Adjust the taper-turning method of small tool angle with dial gauge |
| CN2256353Y (en) * | 1996-08-21 | 1997-06-18 | 朱超 | Machine clamped angle 95 degree high speed fine turning tool |
Non-Patent Citations (3)
| Title |
|---|
| 巧用拖板刻度控制角度精度 张建民，职教通讯，第9期 1997 * |
| 车削圆锥面的新方法 陆幸福，机械工程师，第6期 2003 * |
| 车削圆锥面的新方法 陆幸福，机械工程师，第6期 2003;巧用拖板刻度控制角度精度 张建民，职教通讯，第9期 1997 * |
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| CN1730211A (en) | 2006-02-08 |
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Effective date of registration: 20151124 Address after: 400054 Banan District, Chongqing building Avenue, No. 2, building 1 Patentee after: CHONGQING CONSTRUCTION ELECTROMECHANICAL CO., LTD. Address before: Zheng Jie 400050 Xiejiawan Jiulongpo District of Chongqing City No. 47 Patentee before: Chongqing Jianshe Motorcycle Co., Ltd. |
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Granted publication date: 20070516 Termination date: 20160729 |