CN102366882A - Technological method for processing split key pin hole of guide vane of hydraulic turbine by using cemented carbide cutter - Google Patents
Technological method for processing split key pin hole of guide vane of hydraulic turbine by using cemented carbide cutter Download PDFInfo
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- CN102366882A CN102366882A CN2011103000796A CN201110300079A CN102366882A CN 102366882 A CN102366882 A CN 102366882A CN 2011103000796 A CN2011103000796 A CN 2011103000796A CN 201110300079 A CN201110300079 A CN 201110300079A CN 102366882 A CN102366882 A CN 102366882A
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Abstract
The invention discloses a technological method for processing a split key pin hole of a guide vane of a hydraulic turbine by using a cemented carbide cutter, which can simultaneously satisfy cutting parameters of two kinds of materials by using an efficient mechanically-clamped cemented carbide reamer, and has the advantages of high efficiency, rectification capacity, stable size, long service life and the like. The efficiency is improved by 2-3 times and the obvious economic benefit is achieved. The technological method provided by the invention absolutely solves quality and technology difficulties which exist in the tradition technology for a long time, such as low circular degree of the reamed pin hole, roughness which cannot meet the requirements in a drawing, low efficiency and the like. A set of the more completed cutting parameters are obtained, and the obvious effect is achieved in the production practice, therefore, the product process quality and efficiency of the pin hole of the guide vane of the hydraulic turbine are obviously improved, and the obvious economic benefit is achieved.
Description
Technical field
The present invention relates to a kind of process that adopts hard alloy cutter processing guide vanes of water turbine to divide the half bond pin-and-hole.
Background technology
It is the parts that the key in the hydraulic turbine is transmitted moment of torsion in the hydraulic generator unit that guide vanes of water turbine divides the half bond pin-and-hole; Indispensable in each unit; Be generally complete (one unit 20-24); For draw ratio greater than 4.5 elongated orifices; It is great quality and efficient difficult point of puzzlement guide vanes of water turbine product quality for a long time that stator divides the half bond pin-and-hole always and since this pin-and-hole be positioned at guide vane lever (material: 20SiMn) with stator on axle journal (material: be that dissimilar steel is processed on the mating surface 0Cr13Ni5Mo), the aperture is less all below
; And its draw ratio is greater than more than 4.5 times, and difficulty of processing is very big.By traditional processing method, working (machining) efficiency is low, often occur not circle, dimension overproof, the roughness phenomenon that do not reach drawing requirement, need repair welding process again of hinge in the process, wastes time and energy, and difficulty is very big.
Summary of the invention
It is high to the purpose of this invention is to provide a kind of pin-and-hole internal diameter precision, the process that the employing hard alloy cutter processing guide vanes of water turbine that surface smoothness is good divides the half bond pin-and-hole.Technical scheme of the present invention is: the present invention is a kind of process that adopts hard alloy cutter processing guide vanes of water turbine to divide the half bond pin-and-hole, and technical scheme of the present invention is: comprise following processing step:
(1) will be placed on the platform of boring table with the branch half bond instrument that drills and reams, vertical with machine tool chief axis; With stator and guide vane lever, on connecting plate integral body hung on the v block of branch half bond instrument of drilling and reaming, guide vane lever and connecting plate fixed, and promptly alignment pin is assembled together;
(2) lathe is pressed the roughly levelling of stator end face horizontal line, presses and descends axle journal (machine tool chief axis last dial gauge, to be transferred to 0 with indicator in the stator; Measure in the stator axle journal down, dial gauge maximum jitter amount within 0.05mm, the angle [alpha] of centering stator connecting plate (according to the specification requirement α angle of drawing); Angle according to drawing; Technology Calculation goes out height value L1 (L1 * Sin α), after centering is qualified, and following preface;
(3) centering qualified after with workpiece and platform fixation, check the centering result once more, prevent that workpiece from adding the displacement in man-hour;
(4) pin hole processing: boring, cools reamer head in the employing machine folder cobalt high speed steel, the degree of depth once gets out bottom outlet by drawing, and bore diameter is chosen suitable cutting parameter less than pin-and-hole diameter 8-9mm;
(5) heavy boring pin-and-hole: adopt modular carbide alloy heavy boring cutter rough bore, by the monolateral allowance 0.80mm of nominal size;
(6) half right boring holes are adopted modular carbide alloy fine boring cutter, and on the cutter pre-regulating machine, are adjusted required size, half right boring hole, the monolateral 0.3-0.4mm surplus of staying;
(7) modular carbide alloy fine boring cutter is adopted in right boring hole, and on the cutter pre-regulating machine, adjusts size before the required fraising, that is: by the monolateral 0.10-0.15mm surplus of staying of nominal size;
(8) fraising, the degree of depth is a benchmark with the reamer front end face, with the efficient machine holding carbide alloy of modular reamer pin hole processing, the monolateral hinge amount of control fraising; Before the fraising, this reamer needs on the cutter pre-regulating machine its end jumped and jump into row with the footpath and detect adjustment, makes its two to beat all less than in the 0.015mm, fraising hinge first advance 10mm dark after; Rotation is withdrawed from, and inspection: dimensional tolerance, roughness should satisfy Design Requirement Drawing, and dimensional tolerance is by nominal size; The general H7 of employing level cooperates, and surface smoothness adopts Ra1.6 μ m, after the arrival fraising degree of depth; Feed-disabling reduces rotating speed and withdraws from, first hole check size should be within allowable tolerance, roughness should be less than Ra1.6 μ m.
The emphasis of technology of the present invention just is to divide half bond pin-and-hole process technology to replace traditional processing technology with the brand-new large scale stator of a cover, has solved thoroughly that former technology exists for a long time always: pin-and-hole hinge circle (needing repair welding to process again), roughness does not reach quality and critical technological points such as drawing requirement, efficient be low.The practical implementation point has four:
The efficient drill bit of 1 cobalt high speed steel
The bottom outlet of this pin-and-hole can once be drilled to ￠ 80 efficient drill bits, only needs 20 minutes.And need twice drilling and need the frequent bits that fall with common high-speed steel drill drilling, need with 80 minutes.Raise the efficiency 4 times.
2 modular boring cutters
Adopt modular carbide alloy boring cutter to carry out heavy boring, half right boring, the traditional reamer of right boring replacement, can effectively control because the biasing that dissimilar steel processing is produced has effectively solved the round difficult point of fraising, but also can raise the efficiency 2 times.
3 efficient carbide alloy machine folder reamers
Efficient carbide-tipped reamer is a latest generation reamer in the world at present, advantage such as have that efficient height, roughness are good, dimensionally stable, life-span are long.Compare with traditional reamer and can raise the efficiency 3 times.
4 summations
Through above-mentioned cutter is carried out trial cut, obtain basic parameter and constantly optimization in popularization, obtained the complete cutting parameter of a cover, set up a cover critical piece basically and process efficient numerically controlled tooling system.And in production practices, obtained obvious effects.Existing enlarged unit all satisfies the specification requirement of drawing, and the pin-and-hole internal diameter precision is high, and surface smoothness is good.
Special efficient hard alloy cutter processing guide vanes of water turbine divides the half bond pin-and-hole; Adopt modular boring cutter efficiently that rough bore is rectified a deviation and adopt the efficient machine holding carbide alloy reamer of latest generation to promote the roughness of pivoted arm side; Select novel process tool, reasonably use cutting parameter, optimize processing method; Obtained basic parameter and constantly optimization in popularization, obtained the more complete cutting parameter of a cover, and in production practices, obtained obvious effects; Guide vanes of water turbine pin-and-hole product processed quality and efficient there have been significant raising, and have obtained remarkable economic efficiency.
Description of drawings
Fig. 1 is that the processing stator divides half bond pin-and-hole assembling schematic diagram
The specific embodiment
The process that adopts alloy cutter processing guide vanes of water turbine to divide the half bond pin-and-hole comprises following processing step:
As shown in Figure 1, (1) will be placed on the platform of boring table with the branch half bond instrument 1 that drills and reams, and will be vertical with machine tool chief axis; With stator 2 and guide vane lever, on connecting plate 3 integral body hung on the v block of branch half bond instrument of drilling and reaming, guide vane lever and connecting plate fixed, and promptly alignment pin is assembled together;
(2) lathe is pressed the roughly levelling of stator end face horizontal line, presses and descends axle journal (machine tool chief axis last dial gauge, to be transferred to 0 with indicator in the stator; Measure in the stator axle journal down, dial gauge maximum jitter amount within 0.05mm, the angle [alpha] of centering stator connecting plate (according to the specification requirement α angle of drawing); Angle according to drawing; Technology Calculation goes out height value L1 (L1 * Sin α), after centering is qualified, and following preface;
(3) centering qualified after with workpiece and platform fixation, check the centering result once more, prevent that workpiece from adding the displacement in man-hour;
(4) pin hole processing: boring, cools reamer head in the employing machine folder cobalt high speed steel, the degree of depth once gets out bottom outlet by drawing, and bore diameter is chosen suitable cutting parameter less than pin-and-hole diameter 8-9mm;
(5) heavy boring pin-and-hole: adopt modular carbide alloy heavy boring cutter rough bore, by the monolateral allowance 0.80mm of nominal size;
(6) half right boring holes are adopted modular carbide alloy fine boring cutter, and on the cutter pre-regulating machine, are adjusted required size, half right boring hole, the monolateral 0.3-0.4mm surplus of staying;
(7) modular carbide alloy fine boring cutter is adopted in right boring hole, and on the cutter pre-regulating machine, adjusts size before the required fraising, that is: by the monolateral 0.10-0.15mm surplus of staying of nominal size;
(8) fraising, the degree of depth is a benchmark with the reamer front end face, with the efficient machine holding carbide alloy of modular reamer pin hole processing, the monolateral hinge amount of control fraising; Before the fraising, this reamer needs on the cutter pre-regulating machine its end jumped and jump into row with the footpath and detect adjustment, makes its two to beat all less than in the 0.015mm, fraising hinge first advance 10mm dark after; Rotation is withdrawed from, and inspection: dimensional tolerance, roughness should satisfy Design Requirement Drawing, and dimensional tolerance is by nominal size; The general H7 of employing level cooperates, and surface smoothness adopts Ra1.6 μ m, after the arrival fraising degree of depth; Feed-disabling reduces rotating speed and withdraws from, first hole check size should be within allowable tolerance, roughness should be less than Ra1.6 μ m.
To be placed on the platform of boring table with the branch half bond instrument that drills and reams, vertical with machine tool chief axis; With stator and guide vane lever, connecting plate integral body hangs on instrument, and guide vane lever and connecting plate fix (alignment pin is assembled together); Lathe is pressed the roughly levelling of stator end face horizontal line, presses in the stator the smart centering (level is with vertical) of axle journal down, error within 0.05mm, the angle of centering stator connecting plate, according to the angle of drawing, technology Calculation goes out height value, after centering is qualified, following preface; With workpiece and platform fixation, check the centering result once more after centering is qualified, prevent that workpiece from adding the displacement in man-hour;
Mill out Φ 89 planes with Φ 50 slotting cutters in two pin-and-hole positions, with the chamfering mill off.
1, boring, dark 393mm.(note: amount of feeding f=0.15-0.20mm when drill bit is introduced)
1.1 Φ 80 efficient drill bits:
1.2 cutting parameter: v＜20m/min, f=0.25-0.30mm/ changes,
2, heavy boring 1, dark 393mm
2.1 Φ 84 modular boring cutters
Assemble in the cutter pre-regulating chamber and on the cutter pre-regulating machine, adjust required size.All undertaken with bottom tool by this
2.2 cutting parameter: v＜40-45m/min, f=0.20-0.25mm/ changes; (noting falling to consider to be worth doing)
3, heavy boring 2, dark 393mm
3.1 Φ 87.5-88 is adjustable heavy boring knife bar, dark 393mm
3.2 cutting parameter: v＜40-45m/min, f=0.25-0.30mm/ changes; (noting falling to consider to be worth doing)
4, half right boring, dark 393mm
4.1 Φ 89.25-Φ 89.35 adjustable heavy boring cuttves, dark 393mm
4.2 cutting parameter: v＜45-50m/min, f=0.35-0.40mm/ changes
5, right boring, dark 393mm
5.1 Φ 89.75--89.84 single-blade fine setting fine boring cutter, dark 393mm
5.2 cutting parameter: v＜55-60m/min, f=0.30-0.35mm/ changes
6, fraising, dark 380mm
6.1 Φ 90
+ 0.07Carbide alloy machine folder reamer (hinge amount: monolateral 0.08--0.12mm)
6.2 cutting parameter: v＜20m/min, Fz=0.09-0.10mm/z, f=80-90mm/min
6.3 first fraising hinge advance 10mm dark after, rotation is released.
Inspection: size, roughness.
6.4 after arriving the fraising degree of depth, feed-disabling, rotation is withdrawed from!
Need with equipment:
● numerical control borer
● workbench
● amesdial
● leveling ruler
● inside micrometer
● v block
● special specific purpose tool
The present invention adopts the efficient machine holding carbide alloy reamer of latest generation to promote the roughness of pivoted arm side; The modular boring cutter is rectified a deviation to rough bore and is selected novel process tool, rational cutting parameter, optimizes processing method; Obtained basic parameter and constantly optimization in popularization; Obtained the more complete cutting parameter of a cover; And in production practices, obtained obvious effects, guide vanes of water turbine pin-and-hole product processed quality and efficient there have been significant raising, and have obtained remarkable economic efficiency.
Claims (1)
1. the process that adopts alloy cutter processing guide vanes of water turbine to divide the half bond pin-and-hole is characterized in that: comprise following processing step:
(1) will be placed on the platform of boring table with the branch half bond instrument that drills and reams, vertical with machine tool chief axis; With stator and guide vane lever, on connecting plate integral body hung on the v block of branch half bond instrument of drilling and reaming, guide vane lever and connecting plate fixed, and promptly alignment pin is assembled together;
(2) lathe is pressed the roughly levelling of stator end face horizontal line, presses and descends axle journal (machine tool chief axis last dial gauge, to be transferred to 0 with indicator in the stator; Measure in the stator axle journal down, dial gauge maximum jitter amount within 0.05mm, the angle [alpha] of centering stator connecting plate (according to the specification requirement α angle of drawing); Angle according to drawing; Technology Calculation goes out height value L1 (L1 * Sin α), after centering is qualified, and following preface;
(3) centering qualified after with workpiece and platform fixation, check the centering result once more, prevent that workpiece from adding the displacement in man-hour;
(4) pin hole processing: boring, cools reamer head in the employing machine folder cobalt high speed steel, the degree of depth once gets out bottom outlet by drawing, and bore diameter is chosen suitable cutting parameter less than pin-and-hole diameter 8-9mm;
(5) heavy boring pin-and-hole: adopt modular carbide alloy heavy boring cutter rough bore, by the monolateral allowance 0.80mm of nominal size;
(6) half right boring holes are adopted modular carbide alloy fine boring cutter, and on the cutter pre-regulating machine, are adjusted required size, half right boring hole, the monolateral 0.3-0.4mm surplus of staying;
(7) modular carbide alloy fine boring cutter is adopted in right boring hole, and on the cutter pre-regulating machine
Adjust the preceding size of required fraising, that is: by the monolateral 0.10-0.15mm surplus of staying of nominal size;
(8) fraising, the degree of depth is a benchmark with the reamer front end face, with the efficient machine holding carbide alloy of modular reamer pin hole processing, the monolateral hinge amount of control fraising; Before the fraising, this reamer needs on the cutter pre-regulating machine its end jumped and jump into row with the footpath and detect adjustment, makes its two to beat all less than in the 0.015mm, fraising hinge first advance 10mm dark after; Rotation is withdrawed from, and inspection: dimensional tolerance, roughness should satisfy Design Requirement Drawing, and dimensional tolerance is by nominal size; The general H7 of employing level cooperates, and surface smoothness adopts Ra1.6 μ m, after the arrival fraising degree of depth; Feed-disabling reduces rotating speed and withdraws from, first hole check size should be within allowable tolerance, roughness should be less than Ra1.6 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110300079.6A CN102366882B (en) | 2011-09-28 | 2011-09-28 | Technological method for processing split key pin hole of guide vane of hydraulic turbine by using cemented carbide cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110300079.6A CN102366882B (en) | 2011-09-28 | 2011-09-28 | Technological method for processing split key pin hole of guide vane of hydraulic turbine by using cemented carbide cutter |
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| Publication Number | Publication Date |
|---|---|
| CN102366882A true CN102366882A (en) | 2012-03-07 |
| CN102366882B CN102366882B (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110300079.6A Active CN102366882B (en) | 2011-09-28 | 2011-09-28 | Technological method for processing split key pin hole of guide vane of hydraulic turbine by using cemented carbide cutter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111745430A (en) * | 2020-06-19 | 2020-10-09 | 一飞智控(天津)科技有限公司 | Rotor wing transmission mechanism assembling method, unmanned aerial vehicle and aircraft |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2866887Y (en) * | 2005-12-15 | 2007-02-07 | 天津市天发重型水电设备制造有限公司 | Water turbine guiding water device |
| CN101259542A (en) * | 2008-01-25 | 2008-09-10 | 四川东风电机厂有限公司 | Mixed-flow turbine runner spilled water hole processing technique |
| CN201895106U (en) * | 2010-11-15 | 2011-07-13 | 大连专用机床厂 | Horizontal single-surface drilling, boring and reaming combined machine tool for positioning pin holes |
| CN201931122U (en) * | 2010-12-09 | 2011-08-17 | 哈尔滨汽轮机厂有限责任公司 | Drilling mold for processing pin hole of guide vane rotating handle mechanism and guide vane |
-
2011
- 2011-09-28 CN CN201110300079.6A patent/CN102366882B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2866887Y (en) * | 2005-12-15 | 2007-02-07 | 天津市天发重型水电设备制造有限公司 | Water turbine guiding water device |
| CN101259542A (en) * | 2008-01-25 | 2008-09-10 | 四川东风电机厂有限公司 | Mixed-flow turbine runner spilled water hole processing technique |
| CN201895106U (en) * | 2010-11-15 | 2011-07-13 | 大连专用机床厂 | Horizontal single-surface drilling, boring and reaming combined machine tool for positioning pin holes |
| CN201931122U (en) * | 2010-12-09 | 2011-08-17 | 哈尔滨汽轮机厂有限责任公司 | Drilling mold for processing pin hole of guide vane rotating handle mechanism and guide vane |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111745430A (en) * | 2020-06-19 | 2020-10-09 | 一飞智控(天津)科技有限公司 | Rotor wing transmission mechanism assembling method, unmanned aerial vehicle and aircraft |
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|---|---|
| CN102366882B (en) | 2014-07-09 |
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