CN108994545B - Turning measuring tool of supercharger bearing shell - Google Patents
Turning measuring tool of supercharger bearing shell Download PDFInfo
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- CN108994545B CN108994545B CN201811038709.5A CN201811038709A CN108994545B CN 108994545 B CN108994545 B CN 108994545B CN 201811038709 A CN201811038709 A CN 201811038709A CN 108994545 B CN108994545 B CN 108994545B
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- bearing shell
- bearing
- small
- bearing hole
- hole
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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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B25/00—Accessories or auxiliary equipment for turning-machines
- B23B25/06—Measuring, gauging, or adjusting equipment on turning-machines for setting-on, feeding, controlling, or monitoring the cutting tools or work
Abstract
The invention provides a processing method of a bearing shell of a supercharger, which comprises the following steps: (1) clamping the outer circle of the small end of the bearing shell, and roughly turning the large end, the large end bearing hole and the middle bearing hole of the bearing shell; (2) clamping the excircle of the large end of the bearing shell, and roughly turning the small end and a small end bearing hole of the bearing shell; (3) clamping the outer circle of the small end of the bearing shell, clamping for one time, finely turning the large end of the bearing shell, a large end bearing hole and a middle bearing hole, then semi-finely turning the small end bearing hole, and reserving allowance for aligning in the next process; (4) clamping the bearing shell by using a turning measuring tool with the large-end surface and the large-end bearing hole as references, aligning the small-end bearing hole, and finish turning the small-end bearing hole and the small-end shaft bearing hole of the bearing shell; (5) scribing; (6) and (4) clamping the bearing shell by using a milling tool with the small end face and the small end bearing hole as the reference, aligning and scribing, and processing each hole of the large end face and each boss and connecting hole in the circumferential direction of the appearance. The invention ensures the processing precision, shortens the processing period and improves the production efficiency.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a machining method of a supercharger bearing shell and a turning measuring tool thereof.
Background
At present, with the change of international situation, the ship manufacturing industry in China develops rapidly, and the market share keeps the leading position of the world. The main power device of the ship is a diesel engine, the supercharger is used as an important part of the diesel engine, and the technical level of the supercharger directly influences the working efficiency of the marine diesel engine.
The turbocharger belongs to a high-speed running part arranged on a diesel engine, wherein a bearing shell is an important component of the turbocharger, the bearing shell is connected between a compressor shell and a turbine shell, and a bearing body part, a turbine shaft and the like are arranged in the turbocharger and play a role in connecting the compressor shell and the turbine shell in a front-back mode and transmitting power. Therefore, for the processing of the bearing shell, the processing precision and quality must be strictly ensured, and meanwhile, the production cost is reduced to the maximum extent, and the production efficiency is improved.
In the structure of the bearing shell, the blank is a casting, the structure is pagoda-shaped, an oil cavity is arranged in the middle for lubricating a rotating part, and a cooling water cavity is arranged between the oil cavity and the shell for cooling lubricating oil. Fig. 1 is a schematic structural diagram of a bearing shell, the bearing shell includes a large end 1 and a small end 2, where 101 is a large end outer circle, 102 is a large end face, 201 is a small end outer circle, 202 is a small end face, and the bearing holes include a large end bearing hole 301, an intermediate bearing hole 302, and a small end bearing hole 303. The bearing shell has a complex structure, a plurality of parts needing to be processed, complex processing, high requirements on dimensional precision, form and position tolerance and roughness, and particularly the verticality, the coaxiality and the roundness of each part of the bearing shell directly influence the performance of the bearing shell. The perpendicularity, coaxiality and roundness of all parts of the bearing shell processed by the existing bearing shell processing method are poor, the performance and power of the supercharger are reduced, and the service life of the bearing shell is shortened.
In addition, the axial dimension of the bearing shell is a dimension for controlling the axial clearance, and the turbine shaft is prevented from being rubbed with the bearing shell. As shown in fig. 2 and 3, the axial dimension is such as a distance L1 between a first step surface B of the small-end bearing hole 303 and a reference surface a of the middle bearing hole 302; a distance L2 between the second step surface C of the small end bearing hole 303 and the reference surface a of the intermediate bearing hole 302. If the axial clearance is not properly controlled, the turbine shaft is rubbed, the main shaft sleeve is damaged, and the whole machine is burnt. Limited by the bearing shell structure, the axial dimensions of several stages of the bearing shell cannot be directly measured according to the existing measuring tool.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a supercharger bearing shell processing method and a turning measuring tool thereof.
The technical scheme of the invention is as follows:
the machining method of the bearing shell of the supercharger is characterized by comprising the following steps of:
step 3, clamping the outer circle of the small end of the bearing shell, clamping for one time, finely turning the large end, the large end bearing hole and the middle bearing hole of the bearing shell, then semi-finely turning the small end bearing hole, and reserving the allowance for aligning in the next process;
step 4, clamping the bearing shell by using a turning measuring tool with the large-end surface and the large-end bearing hole as reference, aligning the small-end bearing hole, and finish turning the small-end bearing hole and the small-end shaft bearing hole of the bearing shell;
and 6, clamping the bearing shell by using a milling tool with the small end face and the small end bearing hole as the reference, aligning and scribing, and processing each hole of the large end face and each boss and connecting hole in the circumferential direction of the appearance.
Further, the method also comprises a step 7 of deburring the bearing shell and cleaning sand of the bearing shell.
Further, the method also comprises a step 8 of pumping water to the bearing shell in a sealing mode for checking the sealing performance of the bearing shell.
The utility model provides a turning measuring tool of booster bearing shell which the key lies in: the measuring device comprises a bottom plate, a pressing plate, a positioning plate and a measuring block, wherein a machine tool workbench is embedded in the lower surface of the bottom plate, a circular step surface matched with the end face of the large end of a bearing shell is arranged on the upper surface of the bottom plate, and the center of the circular step surface is also vertically provided with the circular positioning plate matched with the reference surface of a middle bearing hole of the bearing shell; when the bearing shell is clamped by using a turning measuring tool, the end face of the large end of the bearing shell is attached to the circular step face, the reference surface of the middle bearing hole of the bearing shell is attached to the upper surface of the positioning plate, and the bottom plate is provided with a plurality of pressing plates at the excircle of the large end of the bearing shell and used for positioning the bearing shell; the measuring block is used for indirectly measuring the axial size of the bearing shell, the measuring block is of a cylindrical structure, the bottom surface of the measuring block is attached to the step end face of the small-end bearing hole of the bearing shell, the top surface of the measuring block is higher than the small-end face of the bearing shell, the height of the measuring block is L3, the distance between the top surface of the measuring block and the upper surface of the positioning plate is L4, and the distance between the step end face of the small-end bearing hole and the reference surface of the middle bearing hole is L4-L3.
Furthermore, the circular positioning plate is vertically arranged through a plurality of screws, the upper end of each screw is connected with the circular positioning plate, the lower end of each screw is connected with the bottom plate, and each screw is provided with a compression spring between the positioning plate and the bottom plate.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
a. in the finish machining process, a large end is precisely turned, a turned measuring tool is used for clamping a bearing shell, a small end is precisely turned, and finally a milling tool is used for clamping the bearing shell and machining holes on the basis of the finely turned small end face and the small end bearing hole, so that the uniformity of the reference in the finish machining process is guaranteed, and the machining precision is improved.
b. Through the design, use special turning measuring tool, not only make things convenient for clamping location bearing housing, unified benchmark, moreover, owing to receive bearing housing mechanism's restriction, the unable direct measurement of axial dimensions adopts turning measuring tool to go up the locating plate location and uses the measuring block to measure bearing housing axial dimensions indirectly, has overcome bearing housing structure restriction, and the measurement of being convenient for has improved measurement accuracy and measurement of efficiency, has guaranteed production cycle and precision.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural view of a bearing shell;
FIG. 2 is a schematic view of the structure of the bearing shell (showing the axial dimensions);
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a process drawing of a rough turning process 1;
FIG. 5 is a process drawing of a rough turning process 2;
FIG. 6 is a process drawing of a finish turning step 3;
FIG. 7 is a schematic view of the bearing shell clamped on a turning measuring tool (measuring an axial dimension);
FIG. 8 is a process drawing of a finish turning step 4;
FIG. 9 is a schematic view of the bearing shell clamped on a turning measuring tool (measuring another axial dimension);
fig. 10 is a schematic structural view of the bearing housing clamped on the milling tool.
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1 to 10, the method for machining a bearing housing of a supercharger according to the present invention includes the following steps:
step 3, clamping the small end excircle 201 of the bearing shell, clamping for one time, finely turning the large end 1 of the bearing shell, then semi-finely turning the small end bearing hole 303, and reserving allowance for alignment in the next step;
step 4, clamping the bearing shell by using a turning measuring tool with the large-end surface 102 and the large-end bearing hole 301 as reference, aligning the small-end bearing hole 303, and finely turning the small end 1 and the small-end shaft bearing hole 303 of the bearing shell;
and 6, clamping the bearing shell by using a milling tool with the small end face and the small end bearing hole as the reference, aligning and scribing, and processing each hole of the large end face and each boss and connecting hole in the circumferential direction of the appearance.
And 7, deburring the bearing shell and cleaning sand of the bearing shell.
And 8, pumping water to the bearing shell in a sealing mode for checking the sealing performance of the bearing shell.
In the step 1, as shown in fig. 4, the outer circle 201 of the small end of the four-jaw clamp is roughly turned into the outer circle 101 of the large end of the bearing shell, the end face 102 of the large end, the bearing hole 301 of the large end and the bearing hole 302 of the intermediate bearing according to the process drawing of fig. 4.
In the step 2, as shown in fig. 5, the outer circle 101 of the large end of the bearing shell is clamped by the three claws, and the outer circle 201 of the small end of the bearing shell, the end surface 202 of the small end and the bearing hole 303 of the small end are roughly turned according to the process drawing of fig. 5.
In the step 3, as shown in fig. 6, the outer circle 201 of the small end of the bearing shell is clamped by the soft three-jaw clamp, the outer circle 202 of the small end is clamped by one step, the outer circle 101 of the large end of the bearing shell, the end surface 102 of the large end, the bearing hole 301 of the large end and the middle bearing hole 302 are finish-turned firstly, and then the bearing hole 303 of the small end of the bearing shell is semi-finish-turned with a margin for alignment in the next step.
The turning measuring tool for the bearing shell of the supercharger shown in fig. 7 comprises a bottom plate 401, a pressure plate 405, a positioning plate 402 and a measuring block 406, wherein the lower surface of the bottom plate is embedded into a machine tool workbench, the upper surface of the bottom plate is provided with a circular step surface matched with the large-end surface 102 of the bearing shell, and the center of the circular step surface is also vertically provided with the circular positioning plate 402 matched with a reference surface a of a middle bearing hole of the bearing shell. When the bearing shell is clamped by using a turning measuring tool, the end face 102 of the large end of the bearing shell is attached to the circular step face, the reference surface A of the middle bearing hole of the bearing shell is attached to the upper surface of the positioning plate, and the bottom plate 401 is provided with a plurality of pressing plates 405 at the outer circle of the large end of the bearing shell and used for positioning the bearing shell. The measuring block 406 is used for indirectly measuring the axial size of the bearing shell, the measuring block is of a cylindrical structure, the bottom surface of the measuring block is attached to the step end face of the bearing hole at the small end of the bearing shell, and the top surface D of the measuring block is higher than the end face of the small end of the bearing shell for facilitating measurement.
The circular positioning plate 402 is vertically arranged through a plurality of screws 404, the upper end of each screw is connected with the circular positioning plate, the lower end of each screw is connected with the bottom plate, and each screw is provided with a compression spring 403 between the positioning plate and the bottom plate. The upper surface of the positioning plate 402 has a high flatness, and the compression spring 403 has sufficient elasticity to make the upper surface of the positioning plate 402 flush with the reference plane a of the center bearing hole of the bearing housing.
In the step 4, as shown in fig. 7, the bearing shell is clamped by using a turning measuring tool, the positioning plate 402 and the positioning surface of the turning measuring tool are aligned, the component is clamped and positioned on the turning tool by using the large end surface 102 with the large end being finish-turned and the large end bearing hole 301 as references, then the small end bearing hole 303 of the bearing shell is aligned, and the small end outer circle 201, the small end surface 202 and the small end bearing hole 303 of the bearing shell are finish-turned according to the process drawing shown in fig. 8.
When the distance L1 between the small-end bearing hole first-order step surface B and the intermediate bearing hole reference surface a is measured, the measurement block with a proper size is adopted, so that the bottom surface of the measurement block is attached to the small-end bearing hole first-order step surface B, as shown in fig. 7, the height of the measurement block is L3 ', the distance between the top surface D of the measurement block and the upper surface of the positioning plate is L4', and the distance L1 between the small-end bearing hole first-order step surface B and the intermediate bearing hole reference surface a is L4 '-L3', that is, the axial size of the bearing shell is measured by adopting an indirect measurement method.
When the distance between the second-order step surface C of the small-end bearing hole and the reference surface A of the middle bearing hole is measured, the bottom surface of the measuring block is attached to the second-order step surface C of the small-end bearing hole by adopting a measuring block with a proper size, as shown in FIG. 9, the height of the measuring block is L3 ', the distance between the top surface D of the measuring block and the upper surface of the positioning plate is L4', and the distance L2 between the second-order step surface C of the small-end bearing hole and the reference surface A of the middle bearing hole is L4 '-L3', namely, the axial size of the bearing shell is measured by adopting an indirect.
In the step 6, as shown in fig. 10, the bearing shell is clamped by using the milling tool 5, the reference bearing hole, the large end face and the scribe line are aligned, and the holes of the large end face and the bosses and the connecting holes in the circumferential direction of the outer shape are processed.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not cause the essence of the corresponding technical solution to depart from the scope of the technical solution of the embodiments of the present invention, and are intended to be covered by the claims and the specification of the present invention.
Claims (2)
1. The utility model provides a turning measuring tool of booster bearing shell which characterized in that: the measuring device comprises a bottom plate, a pressing plate, a positioning plate and a measuring block, wherein a machine tool workbench is embedded in the lower surface of the bottom plate, a circular step surface matched with the end face of the large end of a bearing shell is arranged on the upper surface of the bottom plate, and the center of the circular step surface is also vertically provided with the circular positioning plate matched with the reference surface of a middle bearing hole of the bearing shell; when the bearing shell is clamped by using a turning measuring tool, the end face of the large end of the bearing shell is attached to the circular step face, the reference surface of the middle bearing hole of the bearing shell is attached to the upper surface of the positioning plate, and the bottom plate is provided with a plurality of pressing plates at the excircle of the large end of the bearing shell and used for positioning the bearing shell; the measuring block is used for indirectly measuring the axial size of the bearing shell, the measuring block is of a cylindrical structure, the bottom surface of the measuring block is attached to the step end face of the small-end bearing hole of the bearing shell, the top surface of the measuring block is higher than the small-end face of the bearing shell, the height of the measuring block is L3, the distance between the top surface of the measuring block and the upper surface of the positioning plate is L4, and the distance between the step end face of the small-end bearing hole and the reference surface of the middle bearing hole is L4-L3.
2. The turning measuring tool of a supercharger bearing housing of claim 1, wherein: the round positioning plate is vertically arranged through a plurality of screws, the upper end of each screw is connected with the round positioning plate, the lower end of each screw is connected with the bottom plate, and each screw is provided with a compression spring between the positioning plate and the bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811038709.5A CN108994545B (en) | 2018-09-06 | 2018-09-06 | Turning measuring tool of supercharger bearing shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811038709.5A CN108994545B (en) | 2018-09-06 | 2018-09-06 | Turning measuring tool of supercharger bearing shell |
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| CN108994545A CN108994545A (en) | 2018-12-14 |
| CN108994545B true CN108994545B (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811038709.5A Active CN108994545B (en) | 2018-09-06 | 2018-09-06 | Turning measuring tool of supercharger bearing shell |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112872727A (en) * | 2021-01-14 | 2021-06-01 | 重庆齐信汽车零部件有限公司 | Processing technology and equipment for rear axle connecting flange |
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| CN103707007A (en) * | 2013-12-04 | 2014-04-09 | 鞠小平 | Method for machining bearing block of active bevel gear |
| CN104227359A (en) * | 2014-09-15 | 2014-12-24 | 重庆江增船舶重工有限公司 | Manufacturing method of centrifugal vapor compressor diffuser |
| CN204788186U (en) * | 2015-05-25 | 2015-11-18 | 新昌县开源汽车轴承有限公司 | Bearing axial internal clearance frock |
| CN106441029A (en) * | 2016-08-31 | 2017-02-22 | 广西玉柴机器股份有限公司 | Cylinder body cylinder bore rabbet depth detection apparatus |
| CN107014279A (en) * | 2017-06-02 | 2017-08-04 | 湖北众力机车车辆配件有限公司 | A kind of assembling bearing K values measurement frock of booster |
| CN107234404A (en) * | 2017-07-31 | 2017-10-10 | 重庆江增船舶重工有限公司 | A kind of manufacture method of vapour compression machine diffuser |
| CN107398746A (en) * | 2017-09-22 | 2017-11-28 | 重庆江增船舶重工有限公司 | A kind of cutting tool and processing method of nozzle outer shroud |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9180559B2 (en) * | 2012-08-16 | 2015-11-10 | Nsk Americas, Inc. | Apparatus and method for measuring bearing dimension |
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2018
- 2018-09-06 CN CN201811038709.5A patent/CN108994545B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4566166A (en) * | 1984-10-03 | 1986-01-28 | Allis-Chalmers Corporation | Method for manufacturing a stay ring bearing stationary guide vanes for a nongated turbine |
| CN103707007A (en) * | 2013-12-04 | 2014-04-09 | 鞠小平 | Method for machining bearing block of active bevel gear |
| CN104227359A (en) * | 2014-09-15 | 2014-12-24 | 重庆江增船舶重工有限公司 | Manufacturing method of centrifugal vapor compressor diffuser |
| CN204788186U (en) * | 2015-05-25 | 2015-11-18 | 新昌县开源汽车轴承有限公司 | Bearing axial internal clearance frock |
| CN106441029A (en) * | 2016-08-31 | 2017-02-22 | 广西玉柴机器股份有限公司 | Cylinder body cylinder bore rabbet depth detection apparatus |
| CN107014279A (en) * | 2017-06-02 | 2017-08-04 | 湖北众力机车车辆配件有限公司 | A kind of assembling bearing K values measurement frock of booster |
| CN107234404A (en) * | 2017-07-31 | 2017-10-10 | 重庆江增船舶重工有限公司 | A kind of manufacture method of vapour compression machine diffuser |
| CN107398746A (en) * | 2017-09-22 | 2017-11-28 | 重庆江增船舶重工有限公司 | A kind of cutting tool and processing method of nozzle outer shroud |
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