CN104139220A - Machining technology for large-sized screw shaft - Google Patents
Machining technology for large-sized screw shaft Download PDFInfo
- Publication number
- CN104139220A CN104139220A CN201310169293.1A CN201310169293A CN104139220A CN 104139220 A CN104139220 A CN 104139220A CN 201310169293 A CN201310169293 A CN 201310169293A CN 104139220 A CN104139220 A CN 104139220A
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- Prior art keywords
- minute
- turning
- teeth
- leading screw
- processing technology
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Abstract
The invention discloses a machining technology for a large-sized screw shaft. Because the boundary dimension of a machined lead screw is large, the machined lead screw is heavy, requirements on form and location tolerance and surface roughness are severe, and the lead screw is difficult to machine. By the machining technology, head separating can be performed correctly through a center lathe by using a change gear head separating method, and a high-quality, high-precision and large-size screw shaft can be machined by a lathe tool with a large negative rake.
Description
Technical field
The present invention relates to processing technology field, particularly the processing technology of large scale lead screw shaft.
Background technology
Employing engine lathe is processed appearance and size more greatly and is very heavy at present, and form and position tolerance and surface roughness etc. requires strict leading screw, and difficulty of processing is all very large.
Summary of the invention
Technical problem to be solved by this invention can realize by following processing step: saw, draw, boring, superly visit, too car, super spy, heat treatment, correction of the flank shape, tempering, cart, super spy, timeliness, cart, timeliness, cart, stroke, imperial milling, boring, pincers
(1) saw: sawing two ends a little, cut flat;
(2) draw: draw leading screw two ends upper thread and centre bore line;
(3) boring: boring leading screw both ends of the surface and centre bore;
(4) super spy: axially super spy;
(5) cart: roughing cylindrical, each diameter allowance 18～20mm, IV forging. left end stays coupon 200mm. otch Φ 20mm, can not cut away.Circle root, chamfering, deburring;
(6) super spy: radially super spy;
(7) heat treatment: HB245～255, modified rear coupon censorship is looked into, and carries out machining processes after qualified;
(8) repair type: after heat treatment, be with heat to repair type, its straightness error is not more than 2mm:
(9) tempering: repair temper after type;
(10) car too: rough turn cylindrical allowance 1.5～2mm;
(11) super spy:
(12) timeliness: artificial aging 72 hours;
(13) cart: rough turn cylindrical allowance 0.8～1mm, goes out square groove, footpath, end allowance 0.8～1mm with the narrowest place of the screw thread car that is as the criterion;
(14) timeliness: artificial aging 72 hours;
(15) cart: screw thread and each car finished product;
(16) draw: keyway and hole processing line, centering line;
(17) imperial milling: press line centering, keyseat finished product;
(18) boring: 6 hole finished products;
(19) pincers: deburring, cylindrical is coated with antirust oil.
The specific embodiment
(1) heavy major axis one cylindrical adds the support of circle cover, guarantees rigidity;
(2) after Pick Wire is divided first correct parted hair, by skilled worker, guarantee surface roughness, form and position tolerance; The technical merit of having relatively high expectations.
Outer garden allowance 0.8～1.0mm, leading screw is as the criterion and processes square groove with the narrowest place foot cun, and footpath, the end locates also allowance 0.8～1.0mm car and go out profile of tooth, last turning again, footpath, end finished product.Lead screw transmission during car button. all the other locate equal feed rod transmission.
Claims (4)
1. a large scale lead screw shaft processing technology, is characterized in that: by change-wheel method separately.
2. processing technology according to claim 1, is characterized in that: (1) initiatively swings the number of teeth can eliminate for processed number of starts time in change-wheel, in the following method separately: after complete first of turning, with chalk at driving wheel Z
1with the follower being meshed with it (or breast wheel) Z
2make a mark, then Z
1and Z
2throw off, and rotate lathe spindle.Make Z
2turn over Z
minuteafter mesh again, just can turning second.Z
minutecan use formula below to calculate: Z
minute=Z
1/ n.In above formula: Z
minute: after the complete stature of turning, Z
1the number of teeth that gear should turn over.Z
1: the driving wheel number of teeth; N: number of starts.(2) if driving wheel can not parted hair, i.e. Z
1can not be divided exactly by n, available follower Z
4, i.e. after complete the first stature of turning, at Z
3and Z
4between gear, make a mark, then Z
3and Z
4throw off.At this moment rotate Z
4, make Z
4turn over and need tooth number Z
minute(at this moment leading screw must with Z
4rotate together).Z
minuteavailable following formula calculates: Z
minute=T
workpiece/ T
leading screwthe X screw gear number of teeth; Z in formula
minute: leading screw and gear should divide the number of teeth.T
workpiece: workpiece pitch (mm); T
leading screw: leading screw pitch (mm).
3. processing technology according to claim 2, is characterized in that: when rough turn, should select larger negative rake, get-5 °～-3 ° proper.When turning groove, lathe tool is three of turning groove simultaneously, otherwise the cutter that can jump.
4. processing technology according to claim 2, is characterized in that: during roughing, and speed of mainshaft n=18r/min, the amount of feeding 0.2～0.3mm/r; During fine finishining, speed of mainshaft n=7.5r/min, the amount of feeding 0.03～0.05mm/r.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310169293.1A CN104139220A (en) | 2013-05-10 | 2013-05-10 | Machining technology for large-sized screw shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310169293.1A CN104139220A (en) | 2013-05-10 | 2013-05-10 | Machining technology for large-sized screw shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104139220A true CN104139220A (en) | 2014-11-12 |
Family
ID=51848651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310169293.1A Pending CN104139220A (en) | 2013-05-10 | 2013-05-10 | Machining technology for large-sized screw shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104139220A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191518163A (en) * | 1915-12-30 | 1916-07-13 | John Warwick And Company Ltd | Apparatus for Cutting Screw Threads in Lathes or like Machines. |
| US2668303A (en) * | 1949-03-08 | 1954-02-09 | Christen Andre | Machine for cutting screw threads |
| CN87101572A (en) * | 1987-06-17 | 1988-12-28 | 沈阳水泵厂 | Machining process of high-precision ultrashort-pitch cycloidal screw |
| CN2133066Y (en) * | 1992-04-18 | 1993-05-12 | 杭州铁路分局机辆培训中心 | Lower cutting machine for electric machine commutator |
| CN201446315U (en) * | 2009-07-24 | 2010-05-05 | 西安高大机电有限公司 | Device for processing threads of leading screw |
-
2013
- 2013-05-10 CN CN201310169293.1A patent/CN104139220A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191518163A (en) * | 1915-12-30 | 1916-07-13 | John Warwick And Company Ltd | Apparatus for Cutting Screw Threads in Lathes or like Machines. |
| US2668303A (en) * | 1949-03-08 | 1954-02-09 | Christen Andre | Machine for cutting screw threads |
| CN87101572A (en) * | 1987-06-17 | 1988-12-28 | 沈阳水泵厂 | Machining process of high-precision ultrashort-pitch cycloidal screw |
| CN2133066Y (en) * | 1992-04-18 | 1993-05-12 | 杭州铁路分局机辆培训中心 | Lower cutting machine for electric machine commutator |
| CN201446315U (en) * | 2009-07-24 | 2010-05-05 | 西安高大机电有限公司 | Device for processing threads of leading screw |
Non-Patent Citations (5)
| Title |
|---|
| 侯全林等: "双刀三刃车削丝杠法", 《机械工人.冷加工》 * |
| 夏宪书: "挂轮分度法", 《机械工人.冷加工》 * |
| 朱心一: "谈多头螺纹的挂轮分头", 《机械工人.冷加工》 * |
| 缪玉明: "快速车削光杠和丝杠", 《机车车辆工艺》 * |
| 金鸿山: "挂轮分头齿数的计算方法", 《现代制造工程》 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141112 |