CN111571113B - Bearing bush seat repairing method - Google Patents

Bearing bush seat repairing method Download PDF

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Publication number
CN111571113B
CN111571113B CN202010466055.7A CN202010466055A CN111571113B CN 111571113 B CN111571113 B CN 111571113B CN 202010466055 A CN202010466055 A CN 202010466055A CN 111571113 B CN111571113 B CN 111571113B
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China
Prior art keywords
bearing bush
bush seat
bearing
holes
coaxiality
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CN202010466055.7A
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Chinese (zh)
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CN111571113A (en
Inventor
吴昌博
陈素梅
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Sany Heavy Machinery Ltd
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Sany Heavy Machinery Ltd
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Priority to CN202010466055.7A priority Critical patent/CN111571113B/en
Publication of CN111571113A publication Critical patent/CN111571113A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P6/00Restoring or reconditioning objects
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/08Measuring arrangements characterised by the use of optical means for measuring diameters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/26Measuring arrangements characterised by the use of optical means for measuring angles or tapers; for testing the alignment of axes
    • G01B11/27Measuring arrangements characterised by the use of optical means for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
    • G01B11/272Measuring arrangements characterised by the use of optical means for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes using photoelectric detection means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/30Measuring arrangements characterised by the use of optical means for measuring roughness or irregularity of surfaces
    • G01B11/303Measuring arrangements characterised by the use of optical means for measuring roughness or irregularity of surfaces using photoelectric detection means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical means
    • G01B5/08Measuring arrangements characterised by the use of mechanical means for measuring diameters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical means
    • G01B5/24Measuring arrangements characterised by the use of mechanical means for measuring angles or tapers; for testing the alignment of axes
    • G01B5/25Measuring arrangements characterised by the use of mechanical means for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical means
    • G01B5/28Measuring arrangements characterised by the use of mechanical means for measuring roughness or irregularity of surfaces

Abstract

The application relates to the technical field of bearing bush seats, in particular to a bearing bush seat repairing method. A bearing bush seat repairing method comprises the following steps: measuring the diameter of a bearing bush seat hole, and executing the next step when the diameter of the bearing bush seat exceeds a preset range value; measuring and calculating the coaxiality of the bearing bush seat hole; performing first repair on the bearing bush seat according to the measured diameter of the bearing bush seat hole; and (5) performing secondary repair on the bearing bush seat according to the coaxiality of the bearing bush seat hole. The method for repairing the bearing bush seat is an online detection and maintenance technology, and comprises the steps of measuring the diameter of a bearing bush seat hole and then repairing for the first time; through the measurement to the axiality of axle bush seat hole, then repairing for the second time, compare in prior art need return the factory maintenance relatively speaking, this application is simple and convenient and with low costs.

Description

Bearing bush seat repairing method
Technical Field
The application relates to the technical field of bearing bush seats, in particular to a bearing bush seat repairing method.
Background
In the process of high-speed operation of a crankshaft of a large diesel engine, alternating load exists, bearing bush seat holes deform in different degrees and accumulate continuously, the coaxiality of the bearing bush seat holes exceeds a standard range, and therefore the diesel engine breaks down.
In view of the above problems, most of the existing methods are factory-returned maintenance, but the transportation is difficult and the cost is high, so a method for repairing a bearing bush seat is urgently needed to solve the technical problems in the prior art to a certain extent.
Disclosure of Invention
The application aims to provide a bearing bush seat repairing method which solves the technical problem that in the prior art, the bearing bush seat is difficult to maintain to a certain extent.
The application provides a bearing bush seat repairing method, wherein the bearing bush seat is arranged on a supporting seat, and a plurality of bearing bush seats are arranged on the supporting seat at intervals; the bearing bush seat comprises an end cover and a base; a bearing bush seat hole with a circular section is arranged between the end cover and the base in an enclosing manner; the method for repairing the bearing bush seat comprises the following steps:
respectively measuring the diameters of the bearing bush seat holes, and executing the next step when the diameter of the bearing bush seat exceeds a preset range;
measuring and calculating the coaxiality of the bearing bush seat holes;
performing first repair on the plurality of bearing bush seats according to the measured diameters of the plurality of bearing bush seat holes;
performing second repair on the plurality of bearing bush seats according to the coaxiality of the bearing bush seat holes;
and detecting the diameters of the bearing bush seat holes and the coaxiality of the bearing bush seat holes again, and finishing the repair when the diameters of the bearing bush seat holes and the coaxiality of the bearing bush seat holes reach a preset range.
In the above technical solution, further, the step of measuring the diameters of the bearing shell holes respectively includes:
measuring the diameters of the bearing bush seat holes by using a measuring piece;
and respectively recording the measured diameters of the bearing bush seat holes.
In the above technical solution, further, the measuring and calculating the coaxiality of the bearing shell holes includes the following steps:
for one of the bearing bush seats, acquiring a cross section of the bearing bush seat, and taking n points at equal intervals on the edge of a bearing bush seat hole on the cross section, wherein n is more than or equal to 3;
sequentially placing the laser detectors on the n points, and respectively detecting the coordinates of the n points;
repeating the steps, and respectively obtaining the coordinates of n points on the edges of the bearing bush seat holes on the cross sections of other bearing bush seats;
and calculating the coaxiality of the bearing bush seat holes according to the coordinates of n points on the cross sections of the bearing bush seats.
In the above technical solution, further, when the shaft is a shaftWhen the number of the bearing bush seats is 4 and n points on the cross section of each bearing bush seat are 4, the coordinates of 4 points on the cross section of the first bearing bush seat are respectively set as A1(x1,y1)、A2(x2,y2)、A3(x3,y3) And A4(x4,y4) (ii) a Let the coordinates of 4 points of the second bearing bush seat cross section be A5(x5,y5)、A6(x6,y6)、A7(x7,y7) And A8(x8,y8) (ii) a Setting the coordinates of 4 points of the section of the third bearing bush seat as A9(x9,y9)、A10(x10,y10)、A11(x11,y11) And A12(x12,y12) (ii) a Setting the coordinates of 4 points of the cross section of the fourth bearing bush seat as A13(x13,y13)、A14(x14,y14)、A15(x15,y15) And A16(x16,y16);
The coordinate of the first bearing shell hole is O1((x1+x2+x3+x4)/4,(y1+y2+y3+y4) 4); the second bearing shell hole) is O2((x5+x6+x7+x8)/4,(y5+y6+y7+y8) 4); the coordinate of the third bearing bush seat hole is O3((x9+x10+x11+x12)/4,(y9+y10+y11+y12) 4); the coordinate of the fourth bearing bush seat hole is O4((x13+x14+x15+x16)/4,(y13+y14+y15+y16)/4);
According to (a) to (b)1、O2、O3And O4Calculating the coaxiality of the bearing shell holes 102。
In the above technical solution, further, the first repairing the bearing shell seat according to the measured diameter of the bearing shell seat hole includes the following steps:
removing the end cover from the base, and milling the end face of the end cover abutted to the base by a first preset distance by using a plane milling machine;
grinding the end face of the base, which is abutted to the end cover, by using an oilstone for a second preset distance;
and buckling the milled end cover on the ground base to finish the first repair.
In the above technical solution, further, the second repairing the bearing shell seat according to the coaxiality of the bearing shell seat hole includes the following steps:
installing a boring machine on one side of the bearing bush seat;
detecting and adjusting the straightness of the boring machine;
starting a boring machine, and roughly machining a bearing bush seat hole according to the coaxiality of the bearing bush seat;
and measuring the size precision of the bearing bush seat hole, and adjusting the machining allowance according to the size precision of the bearing bush seat hole to realize the fine machining of the bearing bush seat hole.
In the above technical solution, further, the measuring part is any one of a caliper, a vernier caliper, a connecting rod type inside micrometer, or a laser caliper.
In the above technical solution, further, after the step of detaching the end cover from the base and milling the end surface of the end cover abutting against the base by a first preset distance using a plane milling machine, the method further includes the steps of:
and grinding the end surface of the end cover abutted to the base by using a surface grinder.
In the above technical solution, further, the detecting and adjusting the straightness of the boring machine includes the following steps:
preparing at least two laser detectors;
one laser detector is arranged at one end of a boring bar of the boring machine, and the other laser detector is arranged at the other end of the boring bar;
and adjusting the straightness of the boring bar according to the data detected by the laser detector, and ensuring that the straightness of the boring bar is between 0 and 0.03.
Compared with the prior art, the beneficial effect of this application is:
the application provides a bearing bush seat repairing method, wherein the bearing bush seat comprises an end cover and a base; a bearing bush seat hole with a circular section is arranged between the end cover and the base in an enclosing manner; the method for repairing the bearing bush seat comprises the following steps:
measuring the diameter of the bearing bush seat hole, and executing the next step when the diameter of the bearing bush seat exceeds a preset range value;
measuring and calculating the coaxiality of the bearing bush seat hole;
performing first repair on the bearing bush seat according to the measured diameter of the bearing bush seat hole;
performing second repair on the bearing bush seat according to the coaxiality of the bearing bush seat hole;
and detecting the diameter of the bearing bush seat hole and the coaxiality of the bearing bush seat hole again, and finishing the repair when the diameter of the bearing bush seat hole and the coaxiality of the bearing bush seat hole reach a preset range.
The method for repairing the bearing bush seat is an online detection and maintenance technology, and comprises the steps of measuring the diameter of a bearing bush seat hole and then repairing for the first time; through the measurement to the axiality of axle bush seat hole, then repairing for the second time, compare in prior art need return the factory maintenance relatively speaking, this application is simple and convenient and with low costs.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a block flow diagram of a bearing bush seat repairing method provided in an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a bearing shell according to an embodiment of the present disclosure;
FIG. 3 is a cross-sectional view of a bearing shell provided in accordance with an embodiment of the present application;
fig. 4 is a schematic structural diagram of a bearing bush seat provided in the embodiment of the present application and provided with a boring machine mounted thereon.
Reference numerals:
100-end cap; 101-a base; 102-bearing shell seat hole; 104-a power head; 105-a boring bar; 106-a gearbox; 107-a clamp; 108-a first bearing shoe; 109-second bearing bush seat; 110-a third bearing shoe; 111-fourth axis shoe; 112-fifth bearing shoe; 113-sixth bearing shoe.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments.
The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1 to 4, during the high-speed operation of a crankshaft of a large diesel engine, due to alternating loads, bearing pad holes 102 deform to different degrees and accumulate continuously, so that the coaxiality of the bearing pad holes 102 exceeds a standard range, a diesel engine fails, and other mechanical equipment is finally stopped due to the fact that the diesel engine is installed on other mechanical equipment. The present application provides a method for repairing a bearing bush seat based on such phenomenon, wherein the bearing bush seat comprises an end cover 100 and a base 101; a bearing bush seat hole 102 with a circular section is arranged between the end cover 100 and the base 101 in a surrounding manner; the method for repairing the bearing bush seat comprises the following steps:
step 100: the diameter of the bearing shell bore 102 is measured, and when the diameter of the bearing shell bore 102 exceeds a preset range (here, the preset range of the diameter of the bearing shell bore 102 is set between 199 mm and 201 mm), step 200 is executed.
In an actual working condition of the diesel engine, preferably, six bearing bush seats are provided, the six bearing bush seats are respectively a first bearing bush seat 108, a second bearing bush seat 109, a third bearing bush seat 110, a fourth bearing bush seat 111, a fifth bearing bush seat 112 and a sixth bearing bush seat 113, and the six bearing bush seats are arranged at intervals to ensure that the total length of the six bearing bush seats is 6 m; in the actual measurement process, the diameters of the six bearing shell holes 102 need to be measured and recorded respectively.
Step 200: measuring and calculating the coaxiality of the bearing shell hole 102, wherein under the normal working condition, the preset range of the coaxiality of the bearing shell hole 102 is between 0 and 0.05 mm;
step 300: performing first repair on the bearing shell seat according to the measured diameters of the bearing shell seat holes 102;
step 400: and performing second repair on the bearing bush seat according to the coaxiality of the bearing bush seat hole 102.
Step 500: and detecting the diameter of the bearing shell hole 102 and the coaxiality of the bearing shell hole 102 again, and finishing the repair when the diameter of the bearing shell hole 102 and the coaxiality of the bearing shell hole 102 reach a preset range.
Specifically, the method for repairing the bearing bush seat is an online detection and maintenance technology, and comprises the steps of measuring the diameter of a bearing bush seat hole 102 and then performing first-time repair; through the measurement to the axiality of axle bush seat hole 102, then carry out the second time and restore, compare in prior art need dismantle the part, return the factory maintenance, the transportation difficulty is compared, this application need not the transportation, need not to dismantle, simple and convenient and with low costs.
In this embodiment, the step 100: measuring the diameter of the bearing shell bore 102 comprises the steps of:
step 101: measuring the diameters of the six bearing shell hole 102 by using a measuring piece; wherein, any one of the measuring piece vernier caliper, the extension rod type inside micrometer or the laser caliper.
Step 102: the measured diameters of the bearing shell holes 102 are recorded.
In this embodiment, the step 200: the step of measuring and calculating the coaxiality of the bearing shell hole 102 comprises the following steps:
step 201: for one of the bearing bush seats, acquiring the section of the bearing bush seat, and taking n points at equal intervals on the edge of the bearing bush seat hole 102 on the section, wherein n is more than or equal to 3;
step 202: sequentially placing the laser detectors on the n points, and respectively detecting the coordinates of the n points;
step 203: repeating the steps, and respectively obtaining coordinates of n points on the edges of the bearing bush seat holes 102 on the cross sections of other bearing bush seats;
step 204: the coaxiality of the bearing shell holes 102 is calculated according to the coordinates of n points on the cross section of the bearing shell.
Further, when the number of the bearing bush seats is 4 and n points on the cross section of each bearing bush seat are 4, the coordinates of the 4 points on the cross section of the first bearing bush seat are respectively set as A1(x1,y1)、A2(x2,y2)、A3(x3,y3) And A4(x4,y4) (ii) a Let the coordinates of 4 points of the second bearing bush seat cross section be A5(x5,y5)、A6(x6,y6)、A7(x7,y7) And A8(x8,y8) (ii) a Setting the coordinates of 4 points of the section of the third bearing bush seat as A9(x9,y9)、A10(x10,y10)、A11(x11,y11) And A12(x12,y12) (ii) a Setting the coordinates of 4 points of the cross section of the fourth bearing bush seat as A13(x13,y13)、A14(x14,y14)、A15(x15,y15) And A16(x16,y16);
The coordinate of the first bearing shell hole is O1((x1+x2+x3+x4)/4,(y1+y2+y3+y4) 4); the second bearing shell hole) is O2((x5+x6+x7+x8)/4,(y5+y6+y7+y8) 4); third stepThe coordinate of each bearing bush seat hole is O3((x9+x10+x11+x12)/4,(y9+y10+y11+y12) 4); the coordinate of the fourth bearing bush seat hole is O4((x13+x14+x15+x16)/4,(y13+y14+y15+y16)/4);
According to (a) to (b)1、O2、O3And O4The coaxiality of the bearing shell holes 102 is calculated.
In this embodiment, the step 300: according to the measured diameter of the bearing bush seat hole 102, the first repair of the bearing bush seat comprises the following steps:
step 301: the end cover 100 and the base 101 are connected by a connecting member, preferably a bolt, the bolt is firstly removed, then the end cover 100 is removed from the base 101, and the end face of the end cover 100 abutting against the base 101 is milled by a first preset distance by using a plane milling machine.
Specifically, when the surface milling machine is in operation, the end cap 100 is mounted on an attachment such as a table or an index head, the milling cutter rotates into a primary motion, and the feed motion of the table or the milling head is assisted, so that the end cap 100 can obtain a desired machined surface. Because the plane milling machine is multi-blade intermittent cutting, the repair of the milling machine is higher, and the plane milling machine has higher practicability.
More specifically, the first preset distance is preferably L1
Step 302: considering that the base 101 is located on the diesel engine body and cannot be disassembled, the end surface of the base 101 abutting the end cover 100 is ground by oilstone and a second preset distance is ground.
In particular, the second preset distance is preferably L2
Step 303: and buckling the milled end cover 100 on the ground base 101 to finish the first repair.
In this embodiment, in order to improve the flatness of the end cap 100, after step 301, the following step 304 is further included: and (4) grinding the end face of the end cover 100 abutted against the base 101 by using a surface grinder.
Specifically, the surface grinder mainly uses a grinding wheel to grind the end cap 100 in a rotating manner, so as to improve the flatness of the end cap 100.
In this embodiment, the step 400 includes the steps of:
step 401: installing a boring machine on one side of the bearing bush seat; specifically, the boring machine comprises a power head 104, a boring bar 105 and a gearbox 106; the boring bar 105 penetrates through the bearing bush seat hole 102, the boring bar 105 is preferably locked and positioned by a clamp 107, the boring bar 105 is sleeved with the gearbox 106, the gearbox 106 is used for driving the boring bar 105 to feed, the power head 104 is sleeved on the boring bar 105, and the power head 104 can drive the boring bar 105 to rotate.
More specifically, the clamp 107 is a clamping plate, a plurality of U-shaped holes are formed in the clamping plate, the boring bar 105 can pass through the U-shaped holes, and the U-shaped holes are matched with the boring bar 105.
Step 402: detecting and adjusting the straightness of the boring machine; further, the step 402 includes the steps of:
the step 4021: preparing at least two laser detectors;
the step 4022: one of the laser detectors is arranged at one end of a boring bar 105 of the boring machine, and the other laser detector is arranged at the other end of the boring bar 105;
the step 4023: and adjusting the straightness of the boring bar 105 according to the data detected by the laser detector, specifically, the transmitter of the laser detector is fixed, the receiver of the laser detector is placed above the boring bar 105, one datum is obtained every other meter, and the straightness of the boring bar 105 is adjusted according to the data of the receiver until the straightness of the boring bar 105 is between 0 and 0.03.
Step 403: starting a boring machine, and roughly machining the bearing bush seat according to the coaxiality of the bearing bush seat;
step 404: and measuring the diameter size precision of the bearing bush seat hole 102, and adjusting the machining allowance according to the size precision of the bearing bush seat hole 102 to realize the fine machining of the bearing bush seat hole 102.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (9)

1. A bearing bush seat repairing method is characterized in that a bearing bush seat is arranged on a supporting seat, and a plurality of bearing bush seats are arranged on the supporting seat at intervals; the bearing bush seat comprises an end cover (100) and a base (101); a bearing bush seat hole (102) with a circular section is arranged between the end cover (100) and the base (101) in a surrounding manner; the method for repairing the bearing bush seat is characterized by comprising the following steps:
respectively measuring the diameters of the bearing bush seat holes (102), and executing the next step when the diameters of the bearing bush seat holes (102) exceed a preset range;
measuring and calculating the coaxiality of a plurality of bearing shell holes (102);
performing a first repair on a plurality of bearing shoes according to the measured diameters of the bearing shoe holes (102);
performing second repair on a plurality of the bearing shell seats according to the coaxiality of the bearing shell seat holes (102);
detecting the diameters of the bearing bush seat holes (102) and the coaxiality of the bearing bush seat holes (102) again, and finishing the repair when the diameters of the bearing bush seat holes (102) and the coaxiality of the bearing bush seat holes (102) reach a preset range;
the step of measuring and calculating the coaxiality of the bearing shell holes (102) comprises the following steps:
for one of the bearing bush seats, acquiring the section of the bearing bush seat, and taking n points at equal intervals on the edge of a bearing bush seat hole (102) on the section, wherein n is more than or equal to 3;
sequentially placing the laser detectors on the n points, and respectively detecting the coordinates of the n points;
repeating the steps, and respectively obtaining the coordinates of n points on the edge of the bearing bush seat hole (102) on the cross section of other bearing bush seats;
and calculating the coaxiality of the bearing bush seat holes (102) according to the coordinates of n points on the cross sections of the bearing bush seats.
2. The bearing shell repair method according to claim 1, wherein measuring the diameters of a plurality of bearing shell bores (102) respectively comprises the steps of:
measuring the diameters of the bearing bush seat holes (102) by using a measuring piece;
and respectively recording the measured diameters of the bearing bush seat holes (102).
3. The bearing shell repairing method according to claim 1, wherein when there are 4 bearing shells and n points on a cross section of each bearing shell are 4, the coordinates of 4 points on the cross section of the first bearing shell are respectively defined as a1(x1,y1)、A2(x2,y2)、A3(x3,y3) And A4(x4,y4) (ii) a Let the coordinates of 4 points of the second bearing bush seat cross section be A5(x5,y5)、A6(x6,y6)、A7(x7,y7) And A8(x8,y8) (ii) a Setting the coordinates of 4 points of the section of the third bearing bush seat as A9(x9,y9)、A10(x10,y10)、A11(x11,y11) And A12(x12,y12) (ii) a Setting 4 points of the cross section of the fourth said bearing bush seatRespectively has coordinates of A13(x13,y13)、A14(x14,y14)、A15(x15,y15) And A16(x16,y16);
The coordinate of the first bearing shell hole is O1((x1+x2+x3+x4)/4,(y1+y2+y3+y4) 4); the second bearing bush seat hole has the coordinate of O2((x5+x6+x7+x8)/4,(y5+y6+y7+y8) 4); the coordinate of the third bearing bush seat hole is O3((x9+x10+x11+x12)/4,(y9+y10+y11+y12) 4); the coordinate of the fourth bearing bush seat hole is O4((x13+x14+x15+x16)/4,(y13+y14+y15+y16)/4);
According to the O1、O2、O3、O4And calculating the coaxiality of the bearing shell holes (102).
4. A method of repairing a bearing shell according to claim 1, wherein the first repairing of a plurality of bearing shell seats according to the measured diameter of the bearing shell bore (102) comprises the steps of:
taking the end cover (100) off the base (101), and milling the end face, abutted against the base (101), of the end cover (100) by a first preset distance by using a plane milling machine;
the base (101) is abutted against the end face of the end cover (100), and a second preset distance is ground by using oilstones;
and buckling the milled end cover (100) on the ground base (101) to finish the first repair.
5. A method of repairing a bearing shell according to claim 1, wherein the second repair of a plurality of bearing shell seats according to the coaxiality of the bearing shell bore (102) comprises the steps of:
installing a boring machine on one side of the bearing bush seat;
detecting and adjusting the straightness of the boring machine;
starting a boring machine, and roughly machining the bearing bush seat hole (102) according to the coaxiality of the bearing bush seat;
and measuring the diameter size precision of the bearing bush seat hole (102), and adjusting the machining allowance according to the size precision of the bearing bush seat hole (102) to realize the fine machining of the bearing bush seat hole (102).
6. The method for repairing a bearing shell according to claim 5, wherein the step of repairing a plurality of bearing shell seats for a second time according to the coaxiality of the bearing shell holes (102) further comprises the following steps:
detecting the diameter, coaxiality and dimensional accuracy of the bearing bush seat hole (102) again;
and when the diameter, the coaxiality and the dimensional accuracy of the bearing bush seat hole (102) are within preset range values, the hole boring machine is dismounted.
7. The method for repairing a bearing bush seat according to claim 2, wherein the measuring member is any one of a vernier caliper, a extension rod type inside micrometer, and a laser caliper.
8. The bearing shell repair method according to claim 4, wherein after the step of removing the end cap (100) from the base (101) and milling the end face of the end cap (100) abutting the base (101) by a first preset distance using a face milling machine, further comprising the steps of:
and grinding the end surface of the end cover (100) abutted against the base (101) by using a surface grinder.
9. The bearing bush seat repairing method according to claim 5, wherein detecting and adjusting the straightness of the boring machine comprises the steps of:
preparing at least two laser detectors;
one laser detector is arranged at one end of a boring bar of the boring machine, and the other laser detector is arranged at the other end of the boring bar;
and adjusting the straightness of the boring bar according to the data detected by the laser detector, and ensuring that the straightness of the boring bar is between 0 and 0.03.
CN202010466055.7A 2020-05-28 2020-05-28 Bearing bush seat repairing method Active CN111571113B (en)

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CN201224812Y (en) * 2008-06-17 2009-04-22 潍坊金蟀机械有限公司 Multiple-support beat-up shaft apparatus
CN101658997B (en) * 2008-08-26 2013-01-23 兰州金牛轨道交通装备有限责任公司 Method for repairing and processing bearing hole of main bearing cap of diesel engine body of diesel locomotive
FR2960463B1 (en) * 2010-06-01 2013-03-29 Snecma METHOD FOR REPAIRING A FLANGE OF A CARTER
CN104165570A (en) * 2014-09-09 2014-11-26 南车戚墅堰机车有限公司 Machine body cam shaft hole and coaxiality maintenance and detection device
CN105345389A (en) * 2015-12-24 2016-02-24 沃德传动(天津)股份有限公司 Method for repairing damaged bearing block
CN106838019B (en) * 2017-01-23 2019-04-09 赵艳蕊 It is a kind of for repairing the technique placenta of water supply pumping plant bearing block
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