CN112264763A - A method for repairing a bolt hole of a diesel engine motor - Google Patents
A method for repairing a bolt hole of a diesel engine motor Download PDFInfo
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- CN112264763A CN112264763A CN202011465332.9A CN202011465332A CN112264763A CN 112264763 A CN112264763 A CN 112264763A CN 202011465332 A CN202011465332 A CN 202011465332A CN 112264763 A CN112264763 A CN 112264763A
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- reaming
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005553 drilling Methods 0.000 claims abstract description 49
- 238000010079 rubber tapping Methods 0.000 claims abstract description 16
- 238000003754 machining Methods 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 239000012459 cleaning agent Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 239000003350 kerosene Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 101100334117 Caenorhabditis elegans fah-1 gene Proteins 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 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
- B23P6/00—Restoring or reconditioning objects
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
本发明涉及螺栓孔修复技术领域，尤其是一种柴油机电机螺栓孔修复方法，包括以下步骤：步骤S1：柴油机与万向钻床位置校调；步骤S2：设计制作非标钻铰刀扩孔并攻丝、测量和检验；步骤S3：车床加工内外螺套；步骤S4：镶套；步骤S5：回攻螺纹孔；步骤S6：螺栓组装。这种机体电机螺栓孔的修复方法不需要组装后的柴油机大解体，不需要大型设备，操作比较简单，避免螺栓的单配，增强产品在今后检修时零部件的互换性，减少了柴油机组装后电机螺栓孔的返修费用，易于使用推广。
The invention relates to the technical field of bolt hole repairing, in particular to a method for repairing a bolt hole of a diesel engine motor, comprising the following steps: step S1: adjusting the position of a diesel engine and a universal drilling machine; step S2: designing and manufacturing a non-standard drilling reamer for hole reaming and tapping Thread, measurement and inspection; step S3: lathe machining inner and outer screw sleeves; step S4: insert sleeves; step S5: back-tapping the threaded holes; step S6: bolt assembly. This method of repairing the bolt holes of the body motor does not require the large disassembly of the assembled diesel engine, does not require large-scale equipment, the operation is relatively simple, avoids the single matching of bolts, enhances the interchangeability of parts in the future maintenance of the product, and reduces the assembly of diesel engines. The repair cost of the rear motor bolt hole is easy to use and promote.
Description
Technical Field
The invention relates to the technical field of bolt hole repair, in particular to a method for repairing a bolt hole of a diesel engine motor.
Background
The engine body is the installation base of the diesel engine, and the blank of the engine body is the block-cast nodular cast iron. The rear end face of the machine body is provided with 2 1-3/8UNF bolt holes for connecting a diesel engine and a motor, the requirement on the position accuracy of the diesel engine and the motor is high, the requirement on the position degree is 0.05mm, the requirement on the position accuracy of the 2 1-3/8UNF bolt holes is high, and when the machine body is machined, the bolt holes, a spindle hole and other key parts are machined by clamping at one time.
Because the bolt hole screw thread of motor and diesel engine erection joint position 1-3/8UNF is fine thread, the precision is higher, and it is longer to revolve deeply, and the equipment requirement is higher, can appear the bolt card phenomenon of dying when diesel engine and motor installation carelessly a little, and the screw thread is destroyed, leads to unable normal installation, because the bolt hole precision is high, the space is limited, the diesel engine heavily reaches 20 more tons, can't utilize large-scale equipment to do over again after the equipment. If the independent organism utilizes the main equipment to do over again, need disassemble the diesel engine, face huge loss, and influence the product node. If the scheme of manually grinding and reaming the single-matched bolt is adopted, the repairing efficiency is low, the position degree of the screw hole is extremely easy to deviate, the normal assembly of the diesel engine and the motor is influenced, and the bolt cannot be interchanged, so that the subsequent repair is influenced.
Disclosure of Invention
The invention provides a method for repairing a motor bolt hole of a diesel engine, aiming at overcoming the defects of the existing method for repairing the motor bolt hole by using a large-scale machine tool or processing the bolt by singly matching, and overcoming the limitations that the diesel engine is greatly disassembled and large-scale equipment needs to be circulated during processing.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for repairing a bolt hole of a diesel engine motor comprises the following steps:
step S1: the position of the diesel engine and the universal drilling machine is adjusted;
step S2: designing and manufacturing a non-standard drilling reamer for reaming, tapping, measuring and checking;
step S3: machining the inner and outer thread sleeves by a lathe;
step S4: sleeving;
step S5: tapping the threaded hole;
step S6: and (6) assembling the bolts.
According to another embodiment of the present invention, the method further comprises step S1 of reaming the original bolt hole with a universal drill, and aligning the spindle of the universal drill with the center of the bolt hole before reaming.
According to another embodiment of the invention, the method for detecting the alignment of the universal drilling machine spindle and the center of the screw hole comprises the following steps: put the diesel engine flat earlier, place the spirit level at the diesel engine top surface and detect, guarantee diesel engine top surface fore-and-aft direction level, use the spirit level at the horizontal direction with universal drilling machine front end main shaft extension part equally, the school of horizontal direction is adjusted and is detected through the square for the drilling machine main shaft is perpendicular with the diesel engine screw.
According to another embodiment of the present invention, the method further comprises designing and manufacturing a non-standard reamer with a guide for reaming in step S2, wherein the reaming is divided into three steps:
step 1: reaming by using a non-standard drilling reamer, positioning by using a guide column at the front end of a cutter, and reaming the original threaded hole;
step 2: reaming by using a non-standard drilling reamer, positioning by using a guide column at the front end of the cutter, and reaming the machined hole in the step 1;
step 3: and (3) reaming by using a non-standard drilling reamer, positioning by using a guide column at the front end of the cutter, and reaming the machining hole in the step 2.
According to another embodiment of the invention, when the inner and outer screw sleeves are machined in step S3, according to the fact that the depth of the original hole-enlarging tapping threaded hole is 0.5mm higher, the threaded hole is turned on the inner hole, and the coaxiality of the inner and outer threaded holes is controlled within 0.015mm by the same clamping during the inner and outer machining.
According to another embodiment of the present invention, the method further comprises the step of tapping the threaded hole in step S5: uniformly coating high-strength thread glue on the surface of the external thread of the screw sleeve, screwing the screw sleeve into the screw hole, waiting for 40 minutes, tapping by using a screw tap, checking by using a no-go gauge, and polishing and flattening the plane.
According to another embodiment of the invention, the threaded hole and the inner and outer screw sleeves are cleaned by kerosene or cleaning agent.
The invention has the beneficial effects that: the method for repairing the motor bolt hole of the engine body does not need large disassembly of the assembled diesel engine, does not need large-scale equipment, is simple to operate, avoids single assembly of the bolt, enhances the interchangeability of parts when products are overhauled in the future, reduces the repair cost of the motor bolt hole after the diesel engine is assembled, and is easy to use and popularize.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic front view of the process of the present invention;
FIG. 2 is a schematic top view of the process of the present invention;
FIG. 3 is a schematic view of the construction of a 32.45 non-standard reamer at the front end of the tool of the present invention;
FIG. 4 is a schematic view of the construction of a phi 37 non-standard drilling reamer of the present invention at the front end of the tool;
FIG. 5 is a schematic view of the construction of a phi 42 non-standard reamer of the present invention at the front end of the tool;
FIG. 6 is a schematic view of the reaming and tapping process of the present invention;
fig. 7 is a schematic structural view of the inner and outer thread inserts of the present invention.
In the figure, 1, a diesel engine, 2, a universal drilling machine, 3, a non-standard drilling reamer at the front end phi 32.45 of a cutter, 4, a non-standard drilling reamer at the front end phi 37 of the cutter, 5, a non-standard drilling reamer at the front end phi 42 of the cutter, 6, a threaded hole, 7, an inner threaded sleeve, an outer threaded sleeve, 8, a level gauge, 9 and a square are arranged.
Detailed Description
Fig. 1 is a schematic front view processing diagram of the invention, and a method for repairing a bolt hole of a diesel engine motor is characterized by comprising the following steps:
step S1: the position of the diesel engine 1 and the universal drilling machine 2 is adjusted;
step S2: designing and manufacturing a non-standard drilling reamer for reaming, tapping, measuring and checking;
step S3: machining the inner and outer thread sleeves 7 by a lathe;
step S4: sleeve inlaying and a sleeve inlaying repairing method: the worn hole or excircle surface is machined, an inner bushing or an outer bushing is arranged in the hole or on a bearing in a certain interference manner, and the inner bushing or the outer bushing is machined, so that the original size is recovered;
step S5: tapping the threaded hole 6;
step S6: and (6) assembling the bolts.
The method for repairing the motor bolt hole of the engine body does not need large disassembly of the assembled diesel engine, does not need large-scale equipment, is simple to operate, avoids single assembly of the bolt, enhances the interchangeability of parts when products are overhauled in the future, reduces the repair cost of the motor bolt hole after the diesel engine is assembled, and is easy to use and popularize.
The method is particularly used for repairing the large bolt hole by embedding and sleeving under the condition that the 1-3/8UNF bolt hole is damaged and cannot be normally assembled due to abnormal conditions after the diesel engine is assembled, and under the condition that the diesel engine is not required to be disassembled and normally placed, the existing space and angle are utilized, so that the method is used for repairing the large bolt hole to restore the original size, the original position and function of the bolt hole and meet the requirements of assembling the diesel engine and a motor.
The repair scheme can be applied to repair of other large connecting bolt holes which are inconvenient to disassemble and cannot use large equipment, repair efficiency is high, position accuracy is high, and follow-up use and repair are not affected.
And in the step S1, the universal drilling machine 2 is adopted to ream the original bolt hole, and before reaming, the main shaft of the universal drilling machine 2 is aligned with the center of the bolt hole.
The method for detecting the alignment of the main shaft of the universal drilling machine 2 and the center of the screw hole comprises the following steps: put diesel engine 1 flat earlier, place the spirit level at the diesel engine top surface and detect, guarantee diesel engine top surface fore-and-aft direction level, use the spirit level at the horizontal direction with universal drilling machine (2) front end main shaft extension part equally, the school of horizontal direction is adjusted and is detected through square (9) for the drilling machine main shaft is perpendicular with the diesel engine screw.
As shown in fig. 3, 4 and 5, the non-standard reamer with guide is designed and manufactured in step S2 for reaming, and the reaming is divided into three steps:
step 1: reaming by using a non-standard drilling reamer 3, positioning by using a guide column at the front end of a cutter, and reaming the original threaded hole 6;
step 2: reaming by using a non-standard drilling reamer 4, positioning by using a guide column at the front end of the cutter, and reaming the machined hole in the step 1;
step 3: reaming by using a non-standard drilling reamer 5, positioning by using a guide post at the front end of the cutter, and reaming the processing hole in the step 2
When the inner and outer screw sleeves 7 are machined in the step S3, the depth of the threaded hole 6 tapped according to the original reaming is 0.5mm higher, the threaded hole 6 is turned in the inner hole, and the coaxiality of the inner and outer screw holes is controlled within 0.015mm by clamping at the same time during inner and outer machining.
In step S5, the threaded hole 6 is tapped: uniformly coating high-strength thread glue on the surface of the external thread of the screw sleeve, screwing the screw sleeve into the screw hole, waiting for 40 minutes, tapping by using a screw tap, checking by using a no-go gauge, and polishing and flattening the plane.
The threaded hole 6 and the inner and outer thread sleeves 7 are cleaned by kerosene or cleaning agents.
Example (b): a scheme for repairing bolt holes of a diesel engine body motor comprises the following steps: adjusting a universal drill and a diesel engine → reaming and tapping by using a drill reamer, measuring and checking → lathing an inner screw sleeve and an outer screw sleeve → cleaning a threaded hole 6 and inlaying the sleeve → back tapping the threaded hole 6.
As shown in fig. 6, the universal drilling machine is used for reaming the original bolt hole, before reaming, the spindle of the universal drilling machine is aligned with the center of the bolt hole, and the detection method comprises the following steps: put the diesel engine flat earlier, place the spirit level at the diesel engine top surface and detect, guarantee diesel engine top surface fore-and-aft direction level, use the spirit level at the horizontal direction with universal drilling machine (2) front end main shaft extension part equally, the school of horizontal direction is adjusted and is detected through square (9) for the drilling machine main shaft is perpendicular with the diesel engine screw.
And (3) reaming the cutter: using a non-standard drilling reamer with a guide at the front end, a non-standard drilling reamer 3, wherein a guide column phi at the front end of a guide part is 32.45 +/-0.02 mm, and the diameter of a cutter phi is 37 (0 to + 0.02) mm; a nonstandard drilling reamer 4, wherein the diameter of a guide column phi at the front end of a guide part is 37 +/-0.02 mm, and the diameter of a cutter phi is 42 (0 to + 0.02) mm; the non-standard drilling reamer 5 has a guide column phi 42 +/-0.02 mm at the front end of a guide part and a cutter diameter phi 43 +/-0.02 mm.
Reaming is divided into three steps: 1, reaming by using a non-standard drilling reamer 3, positioning by using a guide post with the diameter phi of 32.45 +/-0.02 mm at the front end of a cutter, and reaming an original threaded hole to the diameter phi of 37 (0 to + 0.02) mm; step 2, using a non-standard drilling reamer 4 to ream, positioning by using a guide column with phi 37 +/-0.02 mm at the front end of a cutter, and reaming the original threaded hole to phi 42 (0 to + 0.02) mm; and 3, reaming by using a non-standard drilling reamer 5, positioning by using a guide column with phi 42 +/-0.02 mm at the front end of the cutter, and reaming the original threaded hole to phi 43 +/-0.02 mm.
And drilling and reaming the original bolt hole by adopting a universal drilling machine to enlarge the diameter to phi 43 mm.
The enlarged hole was tapped to form a threaded hole 6 of M45 x 2mm, inspected using a no-go gauge and its depth measured.
According to the depth of a threaded hole 6 with the diameter of M45 multiplied by 2mm, a thread sleeve with threads inside and outside is machined, the external threads of the thread sleeve are M45 multiplied by 2mm, the internal threads of the thread sleeve are 1-3/8UNF, when the thread sleeve is machined, the internal threads and the external threads are machined under the same clamping, the coaxiality of an inner hole and the outer diameter before the threads are machined is 0.015mm, and the length of the thread sleeve is 0.5mm higher than the depth of the threaded hole 6 with the diameter of M45 multiplied by 2 mm.
And cleaning the threaded hole 6 with the diameter of M45 multiplied by 2mm and the threaded sleeve by using kerosene or a cleaning agent to ensure that no flanging burr and sundries exist.
As shown in fig. 7, high-strength thread glue is uniformly coated on the surface of the external thread of the screw sleeve, after the screw sleeve is screwed into the screw hole, after 40 minutes, the screw sleeve is back tapped by using a 1-3/8UNF tap, and the plane is polished to be flat by using a check gauge.
The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. A method for repairing a bolt hole of a diesel engine motor is characterized by comprising the following steps:
step S1: the position of the diesel engine (1) and the universal drilling machine (2) is adjusted;
step S2: designing and manufacturing a non-standard drilling reamer for reaming, tapping, measuring and checking;
step S3: machining the inner and outer thread sleeves (7) by a lathe;
step S4: sleeving;
step S5: tapping the threaded hole (6);
step S6: and (6) assembling the bolts.
2. The method for repairing the bolt hole of the diesel engine motor according to claim 1, wherein in the step S1, the universal drilling machine (2) is used for reaming the original bolt hole, and before reaming, the main shaft of the universal drilling machine (2) is aligned with the center of the bolt hole.
3. The method for repairing the bolt hole of the diesel engine motor according to claim 2, wherein the method for detecting the alignment of the main shaft of the universal drilling machine (2) and the center of the bolt hole comprises the following steps: put diesel engine (1) earlier flat, place the spirit level and detect at the diesel engine top surface, guarantee diesel engine top surface fore-and-aft direction level, use the spirit level at the horizontal direction with universal drilling machine (2) front end main shaft extension part equally, the school of horizontal direction is adjusted and is detected through square (9) for the drilling machine main shaft is perpendicular with the diesel engine screw.
4. The method for repairing the bolt hole of the diesel engine motor according to claim 1, wherein the non-standard drilling reamer with the guide is designed and manufactured in the step S2 for reaming, and the reaming is divided into three steps:
step 1: reaming by using a non-standard drilling reamer (3), positioning by using a guide column at the front end of a cutter, and reaming the original threaded hole (6);
step 2: reaming by using a non-standard drilling reamer (4), positioning by using a guide post at the front end of the cutter, and reaming the machined hole in the step 1;
step 3: and (4) reaming by using a non-standard drilling reamer (5), positioning by using a guide column at the front end of the cutter, and reaming the machining hole in the step 2.
5. The method for repairing the bolt hole of the diesel engine motor according to claim 1, wherein when the inner and outer screw sleeves (6) are machined in step S3, the depth of the original hole-enlarging tapped threaded hole (6) is 0.5mm higher, and the threaded hole (6) is turned in the inner hole, and the same clamping is performed during the inner and outer machining, so that the coaxiality of the inner and outer screw holes is controlled within 0.015 mm.
6. The method for repairing the bolt hole of the diesel engine motor according to claim 1, wherein the step S5 is to tap the threaded hole (6): uniformly coating high-strength thread glue on the surface of the external thread of the screw sleeve, screwing the screw sleeve into the screw hole, waiting for 40 minutes, tapping by using a screw tap, checking by using a no-go gauge, and polishing and flattening the plane.
7. The method for repairing the bolt hole of the motor of the diesel engine as claimed in claim 5, wherein the threaded hole (6) and the inner and outer thread sleeves are cleaned by kerosene or a cleaning agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011465332.9A CN112264763A (en) | 2020-12-14 | 2020-12-14 | A method for repairing a bolt hole of a diesel engine motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011465332.9A CN112264763A (en) | 2020-12-14 | 2020-12-14 | A method for repairing a bolt hole of a diesel engine motor |
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| Publication Number | Publication Date |
|---|---|
| CN112264763A true CN112264763A (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011465332.9A Pending CN112264763A (en) | 2020-12-14 | 2020-12-14 | A method for repairing a bolt hole of a diesel engine motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112908662A (en) * | 2021-03-22 | 2021-06-04 | 保定天威保变电气股份有限公司 | Method for solving sealing performance of threaded hole |
| CN115139053A (en) * | 2022-07-08 | 2022-10-04 | 河南柴油机重工有限责任公司 | Diesel engine body deep hole repairing device and using method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020117142A1 (en) * | 2001-02-23 | 2002-08-29 | Phillips Tansil L. | Method of repairing a damaged spark plug hole |
| JP2011088227A (en) * | 2009-10-20 | 2011-05-06 | Nippon Steel Corp | Method and apparatus for repairing bolt hole of shaft coupling |
| CN102909519A (en) * | 2012-11-21 | 2013-02-06 | 南车戚墅堰机车有限公司 | Repair method of bolt hole of machine body cylinder |
| CN112025204A (en) * | 2020-08-31 | 2020-12-04 | 河南柴油机重工有限责任公司 | A method for repairing the back hinge of the insert sleeve for the ejector rod hole of the body |
-
2020
- 2020-12-14 CN CN202011465332.9A patent/CN112264763A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020117142A1 (en) * | 2001-02-23 | 2002-08-29 | Phillips Tansil L. | Method of repairing a damaged spark plug hole |
| JP2011088227A (en) * | 2009-10-20 | 2011-05-06 | Nippon Steel Corp | Method and apparatus for repairing bolt hole of shaft coupling |
| CN102909519A (en) * | 2012-11-21 | 2013-02-06 | 南车戚墅堰机车有限公司 | Repair method of bolt hole of machine body cylinder |
| CN112025204A (en) * | 2020-08-31 | 2020-12-04 | 河南柴油机重工有限责任公司 | A method for repairing the back hinge of the insert sleeve for the ejector rod hole of the body |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112908662A (en) * | 2021-03-22 | 2021-06-04 | 保定天威保变电气股份有限公司 | Method for solving sealing performance of threaded hole |
| CN115139053A (en) * | 2022-07-08 | 2022-10-04 | 河南柴油机重工有限责任公司 | Diesel engine body deep hole repairing device and using method |
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Application publication date: 20210126 |