CN103157951A - Centrifugal steel mould hub repairing process - Google Patents
Centrifugal steel mould hub repairing process Download PDFInfo
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- CN103157951A CN103157951A CN2013100774807A CN201310077480A CN103157951A CN 103157951 A CN103157951 A CN 103157951A CN 2013100774807 A CN2013100774807 A CN 2013100774807A CN 201310077480 A CN201310077480 A CN 201310077480A CN 103157951 A CN103157951 A CN 103157951A
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Abstract
Provided is a centrifugal steel mould hub repairing process. In the process of long term contacting of a hub and a power wheel, the outer surface of the hub can generate tension force, namely, pressure stress, once the hub is taken down from a centrifugal steel mould, under the function of the tension force on the outer surface of the hub, the inner diameter of the hub is bound to reduce and deform, and is difficult to repair. The centrifugal steel mould hub repairing process comprises the following steps: manufacturing a positioning mould with a core shaft, a mould fixing plate and a basic flange plate on the centrifugal steel mould for fixing the hub are identical, the basic flange is imitated, the hub is fixed on the mould fixing plate, equivalently, a running wheel is moved to a lathe for processing, improvements relies in steps of increasing stress relief, diameter and shaft bi-directional pressing and fixing in the process of dismantling and positioning. Due to the fact that same order and same position in an integrated task is not restricted by sequencing and processing, single mode repair cycle is just 4.5 hours, general repairing of a 10 meters mode can be completed in 2 to 3 days, time saving effect is very obvious, and emergency repairing is benefited.
Description
Technical field
The present invention relates to a kind of repair method of round piece, a kind of centrifugal steel mould wheel hub repairing technology, be a kind of repairing technology for centrifugal steel mould specifically.
Background technology
Centrifugal steel mould, general reference is made the punching block of pile tube, electric pole, drainpipe, after using for a long time, the factors such as collision, bending and irrational repairing technology due to centrifugal steel mould in the station handling, cause the on-stream uneven wear of punching block, and then the major defects such as the mistake circle of centrifugal steel mould running wheel and disalignment appear, must reasonably repair, otherwise should not continue use.
Current repairing technology has several:
1. wheel hub is pulled down on running wheel, relatively made up with electric welding, turning after centering, then take apart to install and reset, declare to be finished.the method is eliminated by practice, reason is: running wheel is rolled for a long time, the wheel hub extexine is seriously compressed, before not pulling down, extension expansion potential energy is suppressed by force, pulling down rear swollen gesture namely is released, cause the hub outside surface exhibition to be stretched, cause the orientation diameter that heals up to diminish because of contraction, generally little 2～4 millimeters than vertical orientations, just form after combination take vertical orientations as major axis, the orientation that heals up is the ellipse of minor axis, vertical orientations is namely removed 2～4 millimeters more after the relative centering car circle with inner circle, after reinstalling, the orientation that heals up is strutted by force, it is long that the cylindrical that car is good is just changed into the orientation that heals up, the new final ellipse that vertical orientations is short, its ovality is 2～4 millimeters, vibrations when running up, beat very large, can not use.
2. pull down wheel hub, mold location turning.
The method is to do one with the positioning clamping fixture of axle, on its positioning clamping fixture fixed disk and centrifugal steel mould, the basic flange (basic ring flange) of stationary hub is identical, the analog basis flange is fixed thereon wheel hub, and it is consistent being equivalent to running wheel is moved on on lathe processing.basic step comprises from centrifugal steel mould knocks dismounting, be installed on positioning clamping fixture, repair, dismantle and be re-installed on punching block, its machining accuracy should be desirable in theory, in reality, difference is larger, can not normally use, find that by analyzing me its problem is: the reason of mentioning due to upper example, in the wheel hub unloading process, wheel hub is difficult to pull down, need firmly to impact and to take off with large bell, cause wheel hub to produce distortion, affect subsequent repair, in addition, still need so impact when installing after wheel hub processing, can cause secondary injury to the wheel hub of repairing, so the wheel hub precision of installing after resetting is badly damaged, so in reality, oneself is abandoned.
3. merogenesis is open to traffic and is open to traffic with mould preparation, and step is as follows:
(1) first the centrifugal steel mould mould is corrected substantially.
(2) then rebuild centrifugal steel mould two ends inner hole wall, as positioning datum.
(3) with lathe on whole punching block by wheel turning, unanimously finish to rounding.
Centrifugal steel mould low-medium speed after the method processing still can, at a high speed generally all than big bang with beat, also can't normally use.Its reason is that the running wheel circularity after being open to traffic is fine, and axiality destruction is larger.The destroyed reason of axiality has two:
(1) the centrifugal steel mould two ends are in use the most serious undermined positions, be out of shape larger, as positioning datum be inappropriate.
(2) linearity of cardinal principle is corrected, and still has than big difference to exist.
Be open to traffic under two factor states having as above, it is inevitable outcome that the disalignment phenomenon appears in running wheel and cylindrical shell.Facts have proved, the punching block after being open to traffic, its running wheel malalignment is generally in 4 millimeter, and JC364-86 is defined as 1 millimeter, overflow excessive, so this technique can not adopt.
4. punching block is motionless, carries out hand dipping, repair welding, thinning technique on body, and step is as follows:
(1) utilize diameter contrast on running wheel cylindrical different azimuth to add the arc plate auxiliary, measure and determine out-of-roundness and convex-concave scope.
(2) measure, contrast to heal up and locate the running wheel face to the spacing of cylinder inboard wall, determine the center displacement amount of running wheel level orientation; Measure, contrast the running wheel wheel face to the spacing of cylinder body outer wall, determine the center displacement amount of running wheel vertical orientations, thereby determine comprehensive orientation and the value of running wheel displacement.
(3) to losing exposed large part repair welding.
(4) hand-held angle grinding machine reconditioning is held concurrently and is measured with the cambered surface of different azimuth diameter measurement and arc plate, causes end up to standard.
This technique measuring method science repairs stable accuracy and can satisfy instructions for use, but labour intensity is large, and complex process is with high content of technology, and general workman is difficult to grasp, operation.
5. utilize patent machinery " centrifugal steel die running wheel profiling mill " (patent No. 201010233217.9) processing running wheel, this special plane is actual is the mechanization that has realized the 4th technique.
All fine with the running wheel circularity after this machined, axiality, be current state-of-the-art mechanical processing tools.It has solved the insurmountable technical barrier of other prior art, and its advance is undisputed.But blemish in an otherwise perfect thing is that process is on the high side, and working (machining) efficiency is lower.
Summary of the invention
Deficiency for the second repair method in background technology, the invention provides a kind of centrifugal steel mould wheel hub repairing technology, can well solve stress and problem on deformation that said method exists, make the method not only have good theoretical effect, more have good practical value.
The technical solution adopted for the present invention to solve the technical problems is: this kind centrifugal steel mould wheel hub repairing technology, it is characterized in that, and comprise the steps:
Step 1 is utilized the characteristic of metal heat-expansion shrinkage, circumferentially heats along wheel hub with electric welding, utilizes to add thermogenetic heat energy the outer surface compression of wheel hub internal memory is offset, and makes whole wheel hub internal stress and surface stress reach balance;
Step 2 is pulled down wheel hub on centrifugal steel mould;
Step 3 is installed to wheel hub on positioning clamping fixture; In installation process,
At first, wheel hub is placed on positioning clamping fixture, and radially evenly apply external pressure in the wheel hub surrounding, make the inner surface of wheel hub and the intimate of positioning clamping fixture fit together, then utilize securing member that wheel hub and positioning clamping fixture are tightened together, form one, described securing member circumferentially is evenly arranged in the wheel hub side;
Step 4 is placed in the positioning clamping fixture that wheel hub is installed and carries out turning on lathe;
Step 5 after reconditioning is up to standard, will be pulled down on the self-align mold of wheel hub;
Step 6 is installed to wheel hub on centrifugal steel mould; In installation process,
At first; wheel hub is placed on centrifugal steel mould, circumferentially evenly applies external pressure at wheel hub, make the inner surface of wheel hub and the intimate of the basic ring flange of centrifugal steel mould fit; then utilize securing member that wheel hub and centrifugal steel mould are tightened to one, complete whole technique.
In step 4, repair procedures is: the positioning clamping fixture that (1) at first will be equipped with wheel hub is placed on the V-type support and tests, artificial repair welding, manually to be ground to primary circle suitable, completes preliminary repairing; (2) positioning clamping fixture and wheel hub are moved to lathe, implement turning processing, until complete turning processing, circularity, axiality can reach or fully higher than set quota in JC364-86.
When carrying out step 4, namely when pulling down the wheel hub Vehicle Processing, can centrifugal steel mould the basic ring flange at two ends be measurement point, centrifugal steel mould (without wheel hub) is carried out linearity corrects (thick rectifying), after wheel hub resets again integral body impose essence and rectify, can increase work efficiency and repair precision.
The invention has the beneficial effects as follows: this process is in analysis-by-synthesis, repeatedly practises on the basis of prior art, further perfect, improve and the novel processing technology that produces.Its typical feature is:
1. whole wheel hub internal stress and surface stress reach balance, easily disassembled and assembled freely;
Before wheel hub dismounting, wheel hub is offset with opposite tension because rolling the compression potential energy that produces, make between wheel hub and centrifugal steel mould without active force the destructive factor of hammering distortion when eliminating dismounting.
2. wheel hub and positioning clamping fixture or centrifugal steel mould basis ring flange presses solidly journal axle is two-way;
Between the basic ring flange external diameter of the hub inner surface after stress release and positioning clamping fixture outer surface or former installation wheel hub, existing certain gap, be to guarantee the reseting precision that is installed, and control issuable wheel hub distortion, adopting this journal axle, two-way to press solidly method very effective.
3. thick, smart two orders give
For improving working (machining) efficiency, prevent that overlap from forging a knife, the method of taking roughing, fine finishining two procedures separately to implement: (1) wheel hub is being installed on the lathe row that advances on mold, and at first be placed in test, repair welding on the V-type support after being installed, to be ground to primary circle suitable.(2) mold is moved to lathe, implement turning processing.
4. car, the capable construction of leveling
When pulling down the wheel hub Vehicle Processing, can basic ring flange be measurement point, carry out linearity and correct (thick rectifying), impose again essence after wheel hub resets and rectify, to increase work efficiency.
5. machining accuracy is high
Circularity during centrifugal steel mould overall work after repairing through this technique, axiality can reach or higher than the JC364-86 set quota.
6. working (machining) efficiency is high
The work efficiency of this technique can be higher than being open to traffic more than one times, higher than grinding more than ten times.
7. processing cost is low
Equipment needed thereby is 1 of common C630 lathe only, self-control location tire several, need not other equipment.
8. the cycle of singly repairing is short
Because of the restriction that is not subjected to same order in the one operation, coordination need sort and process, the single mode repair cycle is only 4.5 hours, and the routine of 10 meters moulds is repaired and can be completed in 2～3 days, and during joint, effect is very obvious, and this is very favourable to emergency repair.
Description of drawings
Fig. 1 is the wheel hub installment state schematic diagram in step 3;
Fig. 2 is for radially evenly to apply the schematic diagram of external pressure F in the wheel hub surrounding.
In figure: 1 wheel hub, 2 positioning clamping fixtures, 3 axles, 4 securing members.
The specific embodiment
As depicted in figs. 1 and 2,
The present invention aims to provide a kind of dress wheel hub of freely rolling over, centrifugal steel mould wheel hub repairing technology, the method is to do one with positioning clamping fixture 2(Fig. 1 of axle 3), on its mold fixed disk and centrifugal steel mould, the basic ring flange of stationary hub is identical, the analog basis flange, wheel hub is fixed thereon, and it is consistent being equivalent to running wheel is moved on on lathe processing.wheel hub normally is combined to form by two semicircular ring, at first we analyze the reason that hub outside surface produces stress and are, in the process of wheel hub and power wheel Long Term Contact, it is compression that the outer surface of wheel hub can produce tension force, this moment is due to the effect of fastening bolt, wheel hub is fitted on centrifugal steel mould from being not reflected in appearance, but the basic ring flange of wheel hub and centrifugal steel mould is fitting together tightly in fact, in case wheel hub is taken off on centrifugal steel mould, under the effect of hub outside surface tension force, the wheel hub internal diameter certainly will dwindle distortion, be difficult to repair.Improvement be the dismounting and position fixing process in increased eliminate stress, the two-way step that presses solidly of journal axle, concrete steps are as follows:
Step 1, wheel hub is produced tension force because rolling the surface, utilize the characteristic of metal heat-expansion shrinkage, circumferentially heat along wheel hub with electric welding, form bonding wire, utilization adds thermogenetic heat energy offsets the outer surface compression of wheel hub internal memory, makes whole wheel hub internal stress and surperficial reversal of stress reach balance, and wheel hub obtains preliminary correction;
Step 2, after step 1 is processed, whole wheel hub internal stress and surface stress reach balance, can use very easily spanner to unclamp bolt wheel hub is pulled down on centrifugal steel mould, and the wheel hub after pulling down can keep original shape and do not deform or atomic little distortion occurs;
Step 3 is installed to wheel hub on positioning clamping fixture; In installation process,
At first, wheel hub 1 is placed on positioning clamping fixture 2, and have a lot of modes in the realization that the wheel hub surrounding radially evenly applies this pressure of external pressure F(, can be undertaken by frock, this is that those skilled in the art is easy to realize), as shown in Figure 2, make the inner surface of wheel hub and the intimate of positioning clamping fixture fit together, reach closely cooperate after, utilize securing member that wheel hub and positioning clamping fixture are tightened together, both form one, and securing member 4 circumferentially is evenly arranged in the wheel hub side, form a plurality of fastening point, as shown in Figure 1; Take this measure can guarantee the reseting precision that both are installed, and control issuable wheel hub distortion;
Step 4 is placed in the positioning clamping fixture that wheel hub is installed and carries out turning on corresponding lathe; In this technique, provide a kind of engagement process of the best: for improving working (machining) efficiency, prevent that overlap from forging a knife, the method of taking roughing, fine finishining two procedures separately to implement: (1) wheel hub is being installed on the lathe row that advances on positioning clamping fixture, and at first be placed on the V-type support after the wheel hub that is installed test, artificial repair welding, manually to be ground to primary circle suitable, completes preliminary repairing; (2) positioning clamping fixture and wheel hub are moved to lathe, implement turning processing, until complete turning processing; Its circularity, axiality can reach or fully higher than set quota in JC364-86.
Step 5, car is finished, and will pull down on the self-align mold of wheel hub;
Step 6 is installed to wheel hub on centrifugal steel mould; In installation process,
At first; wheel hub is placed on centrifugal steel mould, circumferentially evenly applies external pressure at wheel hub, make the inner surface of wheel hub and the intimate of the basic ring flange of centrifugal steel mould fit; then utilize securing member that wheel hub and centrifugal steel mould are tightened to one, complete whole technique.
When carrying out step 4; namely when pulling down the wheel hub Vehicle Processing, can the basic ring flange of centrifugal steel mould be measurement point, and datum mark carry out linearity rectification (thick rectifying) to centrifugal steel mould (without wheel hub); after wheel hub resets again integral body impose essence and rectify, can increase work efficiency and repair precision.
This technique journal axle bidirectional pressing is fixed, positioning clamping fixture location turning, thick smart two order combinations, the repairing technology of the centrifugal steel mould running wheel of car, the capable construction of leveling is installed the running wheel after resetting, and its circularity, axiality can satisfy the specification requirement of JC364-86 fully, whole process need not main equipment, easy to process quick, precision, efficient all are better than the technique that is open to traffic, and outstanding techno-economic effect is arranged.
Embodiment recited above is described the preferred embodiment of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; the relevant technical staff in the field all should expand in protection domain as determined in claims of the present invention various distortion of the present invention and improvement.
Claims (3)
1. a centrifugal steel mould wheel hub repairing technology, is characterized in that, comprises the steps:
Step 1 is utilized the characteristic of metal heat-expansion shrinkage, circumferentially heats along wheel hub with electric welding, utilizes to add thermogenetic heat energy the outer surface compression of wheel hub internal memory is offset, and makes whole wheel hub internal stress and surface stress reach balance;
Step 2 is pulled down wheel hub on centrifugal steel mould;
Step 3 is installed to wheel hub on positioning clamping fixture; In installation process,
At first, wheel hub is placed on positioning clamping fixture, and radially evenly apply external pressure in the wheel hub surrounding, make the inner surface of wheel hub and the intimate of positioning clamping fixture fit together, then utilize securing member that wheel hub and positioning clamping fixture are tightened together, form one, described securing member circumferentially is evenly arranged in the wheel hub side;
Step 4 is placed in the positioning clamping fixture that wheel hub is installed and carries out turning processing on lathe;
Step 5 after turning is up to standard, will be pulled down on the self-align mold of wheel hub;
Step 6 is installed to wheel hub on centrifugal steel mould; In installation process,
At first; wheel hub is placed on centrifugal steel mould, circumferentially evenly applies external pressure at wheel hub, make the inner surface of wheel hub and the intimate of the basic ring flange of centrifugal steel mould fit; then utilize securing member that wheel hub and centrifugal steel mould are tightened to one, complete whole technique.
2. centrifugal steel mould wheel hub repairing technology according to claim 1, it is characterized in that, in step 4, repair procedures is: the positioning clamping fixture that (1) at first will be equipped with wheel hub is placed on the V-type support and tests, artificial repair welding, manually to be ground to primary circle suitable, completes preliminary repairing; (2) positioning clamping fixture and wheel hub are moved to lathe, implement turning processing, until complete turning processing, circularity, axiality can reach or fully higher than set quota in JC364-86.
3. centrifugal steel mould wheel hub repairing technology according to claim 1 and 2, it is characterized in that, when carrying out step 4, namely when pulling down the wheel hub Vehicle Processing, can centrifugal steel mould the basic ring flange at two ends be measurement point, centrifugal steel mould is carried out linearity corrects, after wheel hub resets again integral body impose essence and rectify.
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| CN2013100774807A CN103157951A (en) | 2013-03-12 | 2013-03-12 | Centrifugal steel mould hub repairing process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104802585A (en) * | 2015-05-09 | 2015-07-29 | 黄石鑫华轮毂有限公司 | Locally character-milled automobile aluminium alloy hub |
| CN106670720A (en) * | 2015-11-10 | 2017-05-17 | 陕西重型汽车有限公司 | Method for repairing re-damaged radiant plate wheel part hub |
| CN106925942A (en) * | 2017-03-20 | 2017-07-07 | 中信戴卡股份有限公司 | A kind of method for wheel balance correction |
| CN109014248A (en) * | 2018-10-11 | 2018-12-18 | 上海车功坊智能科技股份有限公司 | A kind of semi-automatic and automatic automobile hub surface drawing process |
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| US4080705A (en) * | 1977-05-26 | 1978-03-28 | Bailey Ronald G | Method for repairing wheel hubs for vehicles |
| WO2006094779A2 (en) * | 2005-03-11 | 2006-09-14 | Stefan Mertens | Device for non-cutting dressing vehicle rims for car, motor lorry, motorcycle or the like wheels and a method for dressing said rims |
| CN1939653A (en) * | 2006-08-31 | 2007-04-04 | 中国南车集团戚墅堰机车车辆厂 | Butt wheel edge repairing process of track vehicle |
| CN102896460A (en) * | 2012-10-18 | 2013-01-30 | 蚌埠市福沃特车轮制造科技有限公司 | Device for correcting hub hole slot |
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2013
- 2013-03-12 CN CN2013100774807A patent/CN103157951A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4080705A (en) * | 1977-05-26 | 1978-03-28 | Bailey Ronald G | Method for repairing wheel hubs for vehicles |
| WO2006094779A2 (en) * | 2005-03-11 | 2006-09-14 | Stefan Mertens | Device for non-cutting dressing vehicle rims for car, motor lorry, motorcycle or the like wheels and a method for dressing said rims |
| CN1939653A (en) * | 2006-08-31 | 2007-04-04 | 中国南车集团戚墅堰机车车辆厂 | Butt wheel edge repairing process of track vehicle |
| CN102896460A (en) * | 2012-10-18 | 2013-01-30 | 蚌埠市福沃特车轮制造科技有限公司 | Device for correcting hub hole slot |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104802585A (en) * | 2015-05-09 | 2015-07-29 | 黄石鑫华轮毂有限公司 | Locally character-milled automobile aluminium alloy hub |
| CN106670720A (en) * | 2015-11-10 | 2017-05-17 | 陕西重型汽车有限公司 | Method for repairing re-damaged radiant plate wheel part hub |
| CN106670720B (en) * | 2015-11-10 | 2019-09-03 | 陕西重型汽车有限公司 | The method that plate spoke wheel-class parts wheel hub is repaired after damaging again |
| CN106925942A (en) * | 2017-03-20 | 2017-07-07 | 中信戴卡股份有限公司 | A kind of method for wheel balance correction |
| CN109014248A (en) * | 2018-10-11 | 2018-12-18 | 上海车功坊智能科技股份有限公司 | A kind of semi-automatic and automatic automobile hub surface drawing process |
| CN109014248B (en) * | 2018-10-11 | 2020-04-03 | 上海车功坊智能科技股份有限公司 | Semi-automatic and automatic automobile hub surface wire drawing method |
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Application publication date: 20130619 |