CN104117820A - Bearing box machining method - Google Patents
Bearing box machining method Download PDFInfo
- Publication number
- CN104117820A CN104117820A CN201410288647.9A CN201410288647A CN104117820A CN 104117820 A CN104117820 A CN 104117820A CN 201410288647 A CN201410288647 A CN 201410288647A CN 104117820 A CN104117820 A CN 104117820A
- Authority
- CN
- China
- Prior art keywords
- bearing housing
- milling
- deviation
- line
- boring
- 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
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
Abstract
The invention relates to the field of machining, in particular to a bearing box machining method. The method comprises the following steps of drawing lines on a bearing box, rough machining of the bearing box, carrying out a kerosene test, finish machining of the bearing box and carrying out a hydrostatic test. By means of the method, finish machining processes of all machined surfaces are completed in the clamping process, and machining quality and machining efficiency can be improved.
Description
Technical field
The present invention relates to field of machining, be specifically related to bearing housing processing method.
Technical background
At steam turbine middle (center) bearing case, be divided into by type and land case and the bearing housing together with cylinder connects, by purposes, can be divided into front bearing box, middle (center) bearing case, after the bearing box.Because bearing housing needs the dynamic and static load of bear rotor and cylinder in steam turbine, also bearing the dynamic loading that the unbalance mass, of the reaction force that brings for transmitting torque and high-speed rotary part causes simultaneously, to guarantee to maintain the stability of bearing dynamical height under each operating condition, so its machining process is had relatively high expectations.There is very large defect in crudy and working (machining) efficiency in machining process at present.
Summary of the invention
In order to address the above problem, the invention provides a kind ofly, can improve crudy, the bearing housing processing method that working (machining) efficiency is high.
Bearing housing processing method of the present invention, bearing housing processing method, comprises the following steps:
The line of the first step, bearing housing, requires lower deviation value that blank allowance deviation, bearing housing centerline deviation, bearing housing two ends upper thread deviation, bearing axis deviation, bearing housing respectively open grade line deviation all in allowed limits.
Second step, bearing housing roughing, main level of processing split, baseplane, top flange face, respectively open shelves and each finished surface and stay 3-5mm surplus, after roughing, should carry out de-stress processing, carrying out flaw detection, blasting treatment.
The 3rd step, carry out kerosine test.
The 4th step, bearing housing fine finishining, fine finishining comprises line, boring and milling, brill, pincers worker order, during line, to meet bearing housing line discrepancy principle, and on second horizontal flange of bearing housing, each Kong Yaoyong upper cover number of carrying out is drawn, during boring and milling, on planer-type milling machine, floor milling machine, process, smear metal cutter adopts high-speed steel or hard alloy cutter, and surface roughness reaches
above, the accurate horizontal flange of milling, baseplane top flange face etc., simultaneously in each milling one centering plane of front/rear end, in order to boring machine centering, use, while boring each hole, mainly select upright drill and horizontal drilling machine to be used in conjunction with, different according to the position in hole, select different drilling machines.Require the center line of bolt hole of processing vertical with the machined surface at place, franchise 0.1/100, through hole shaving is parallel with the machined surface at place, and then franchise 0.05mm carries out back chipping to reaching the size of requirement, clears up each finished surface, removes burr.
The 5th step, the water pressure test, kerosine test carries out before general assembly after fine finishining.
Bearing housing processing method of the present invention completes the finishing step of all finished surfaces in clamping process, improves to greatest extent crudy and working (machining) efficiency.
The specific embodiment
Bearing housing processing method of the present invention, comprises the following steps:
The line of the first step, bearing housing, requires lower deviation value that blank allowance deviation, bearing housing centerline deviation, bearing housing two ends upper thread deviation, bearing axis deviation, bearing housing respectively open grade line deviation all in allowed limits.
Second step, bearing housing roughing, main level of processing split, baseplane, top flange face, respectively open shelves and each finished surface and stay 3-5mm surplus, after roughing, should carry out de-stress processing, carrying out flaw detection, blasting treatment.
The 3rd step, carry out kerosine test.The object of kerosine test mainly checks bearing housing weldquality.
The 4th step, bearing housing fine finishining, fine finishining comprises line, boring and milling, brill, pincers worker order: during line, to meet bearing housing line discrepancy principle; Draw center line, circle line, bottom surface line, respectively open a grade line, keyway line etc.On second horizontal flange of bearing housing, each Kong Yaoyong upper cover number of carrying out is drawn, while merging with assurance, each hole concentricity can reach designing requirement, during boring and milling, the boring and milling operation of bearing housing is generally processed on planer-type milling machine, floor type boring machine, cutting tool generally adopts high-speed steel or hard alloy cutter, and surface roughness can reach
above, the accurate horizontal flange of milling, baseplane, top flange face etc., simultaneously will be in front/rear end both sides each milling one centering plane, surface roughness reaches
, in order to boring machine centering, to use, boring order will be carried out centering by milling order polished surface and centering face, and machine tool chief axis center line will overlap with bearing housing center line, now will use special-purpose alignment instrument.In merging second, the accurate front/rear end of boring and respectively open a grade size.Take upper cover apart, add other sizes of fourth, when some bearing housing less, open shelves, endoporus, bearing omoplate and be on boring machine when processing effect is poor, can not reach designing requirement, can use less numerical control vertical lathe, while boring each hole, main upright drill and the horizontal drilling machine selected is used in conjunction with, different according to the position in hole, selects different drilling machines.Require the center line of bolt hole of processing vertical with the machined surface at place, franchise 0.1/100, through hole shaving is parallel with the machined surface at place, and then franchise 0.05mm carries out back chipping to reaching the size of requirement, clears up each finished surface, removes burr.
The 5th step, the water pressure test, the object of the water pressure test is the intensity of test bearing case oil inlet pipe, kerosine test carries out before general assembly after fine finishining.
Claims (1)
1. bearing housing processing method, is characterized in that, comprises the following steps:
The first step, bearing housing line, requires lower deviation value that blank allowance deviation, bearing housing centerline deviation, bearing housing two ends upper thread deviation, bearing axis deviation, bearing housing respectively open grade line deviation all in allowed limits;
Second step, bearing housing roughing, main level of processing split, baseplane, top flange face, respectively opens shelves and each finished surface and stays 3-5mm surplus, after roughing, should carry out de-stress processing, carrying out flaw detection, blasting treatment;
The 3rd step, carries out kerosine test;
The 4th step, bearing housing fine finishining, fine finishining comprises line, boring and milling, brill, pincers worker order, during line, to meet bearing housing line discrepancy principle, and on second horizontal flange of bearing housing, each Kong Yaoyong upper cover number of carrying out is drawn, and during boring and milling, on planer-type milling machine, floor milling machine, processes, smear metal cutter adopts high-speed steel or hard alloy cutter, and surface roughness reaches
above, the accurate horizontal flange of milling, baseplane top flange face etc., simultaneously in each milling one centering plane of front/rear end, in order to boring machine centering, use, while boring each hole, main upright drill and the horizontal drilling machine selected is used in conjunction with, different according to the position in hole, select different drilling machines, require the center line of bolt hole of processing vertical with the machined surface at place, franchise 0.1/100, through hole shaving is parallel with the machined surface at place, and then franchise 0.05mm carries out back chipping to reaching the size of requirement, clear up each finished surface, remove burr.
The 5th step, the water pressure test, the water pressure test is carried out before general assembly after fine finishining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410288647.9A CN104117820A (en) | 2014-06-25 | 2014-06-25 | Bearing box machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410288647.9A CN104117820A (en) | 2014-06-25 | 2014-06-25 | Bearing box machining method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104117820A true CN104117820A (en) | 2014-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410288647.9A Pending CN104117820A (en) | 2014-06-25 | 2014-06-25 | Bearing box machining method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104117820A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312853A (en) * | 2015-07-15 | 2016-02-10 | 江苏海天泵阀制造有限公司 | Technique for machining speed-up gearbox casing of high-speed magnetic drive pump |
| CN112809316A (en) * | 2020-04-26 | 2021-05-18 | 昆明嘉和科技股份有限公司 | Clamping device for pump bearing box and machining method for bearing box |
-
2014
- 2014-06-25 CN CN201410288647.9A patent/CN104117820A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312853A (en) * | 2015-07-15 | 2016-02-10 | 江苏海天泵阀制造有限公司 | Technique for machining speed-up gearbox casing of high-speed magnetic drive pump |
| CN105312853B (en) * | 2015-07-15 | 2017-08-25 | 江苏海天泵阀制造有限公司 | A kind of high-speed magnetic pump step-up gear body processing technology |
| CN112809316A (en) * | 2020-04-26 | 2021-05-18 | 昆明嘉和科技股份有限公司 | Clamping device for pump bearing box and machining method for bearing box |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141029 |