CN114799755B - Method for machining abdominal cavity of horizontal split compressor shell by boring machine - Google Patents
Method for machining abdominal cavity of horizontal split compressor shell by boring machine Download PDFInfo
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- CN114799755B CN114799755B CN202210467162.0A CN202210467162A CN114799755B CN 114799755 B CN114799755 B CN 114799755B CN 202210467162 A CN202210467162 A CN 202210467162A CN 114799755 B CN114799755 B CN 114799755B
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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
- B23B35/00—Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The application provides a boring machine processing level subdivision compressor shell abdominal cavity processing method, wherein a compressor comprises a shell, the shell comprises a first shell and a second shell, and the first shell is contacted with the second shell to form a contact surface; the method comprises the following steps: placing the contact surface of the housing perpendicular to a horizontal plane; performing first machining on an inner hole of a positioning boss of an abdominal cavity of the shell; centering the center of the inner hole of the positioning boss by taking the center of the inner hole of the bearing area as a reference; performing secondary processing on an inner hole of the positioning boss of the abdominal cavity of the shell; and processing the side wall of the positioning boss of the abdominal cavity of the shell. Because the contact surface of the compressor is perpendicular to the horizontal plane, the positioning precision of the shell is improved in the subsequent processing process, the clamping precision of the shell is improved, the processing precision of the shell is improved, and the processing cost is reduced.
Description
Technical Field
The application belongs to the technical field of compressor shell machining, and particularly relates to a boring machine machining level subdivision compressor shell abdominal cavity positioning method.
Background
The common processing method for processing the abdominal cavity positioning spigot of the existing horizontal split compressor shell is milling planer, and in the processing process, the shell is positioned inaccurately and clamped inaccurately, so that the processed shell is low in precision, and the processing cost is increased.
Disclosure of Invention
Therefore, the technical problem to be solved by the application is to provide a boring machine processing level subdivision compressor shell abdominal cavity processing method, which can solve the problems that the positioning of the shell is inaccurate, the clamping is inaccurate, and then the precision of the processed shell is low and the processing cost is increased in the processing process of the shell.
In order to solve the above problems, the present application provides a boring machine processing level split compressor shell abdominal cavity processing method, which is characterized in that a compressor comprises a shell, wherein the shell comprises a first shell and a second shell, and the first shell is contacted with the second shell to form a contact surface;
the method comprises the following steps:
placing the contact surface of the housing perpendicular to a horizontal plane;
performing first machining on an inner hole of a positioning boss of an abdominal cavity of the shell;
centering the center of the inner hole of the positioning boss by taking the center of the inner hole of the bearing area as a reference;
performing secondary processing on an inner hole of the positioning boss of the abdominal cavity of the shell;
and processing the side wall of the positioning boss of the abdominal cavity of the shell.
Optionally, before positioning the contact surface of the housing in a vertical horizontal plane, the method further comprises:
the housing is placed in the middle of at least two fixing devices, one side of the housing is contacted with one of the fixing devices and is connected with the fixing device of one of the fixing devices, and the other side of the housing is contacted with the fixing device of the other fixing device and is connected with the fixing device of the other fixing device.
Optionally, placing the housing in the middle of at least two fixing devices, contacting one side of the housing with one of the fixing devices and connecting with the fixing device of one of the fixing devices, and contacting the other side of the housing with the fixing device of the other fixing device and connecting with the fixing device of the other fixing device, before comprising:
processing empty slots on the bottom plane wall and the vertical plane wall of at least two fixing devices;
processing positioning grooves on the bottom plane walls of the at least two fixing devices;
machining an installation groove on a boring machine workbench, and installing a positioning block in the installation groove;
the positioning block on the workbench is placed into the positioning groove on the fixing device, and the positioning block is contacted with the positioning groove;
and processing the vertical surfaces of at least two fixing devices.
Optionally, placing the contact surface of the housing perpendicular to a horizontal plane includes:
placing the contact surface of the housing onto a horizontal surface;
lifting the shell through a lifting rope;
and turning over the shell to enable the contact surface of the shell to be vertical to a horizontal plane.
Optionally, before the shell is lifted by the lifting rope, the method further comprises:
and hanging rings are uniformly arranged on the outer side of the contact surface of the shell.
Optionally, centering the center of the positioning boss inner hole with the center of the bearing area inner hole includes:
the transverse numerical value of the inner hole of the bearing area is measured by a meter;
the transverse numerical value of the inner hole of the positioning boss is measured by a meter;
and checking that the inner hole of the positioning boss and the inner hole of the bearing area are in concentric positions according to the difference value between the transverse value of the inner hole of the bearing area and the transverse value of the inner hole of the positioning boss and the difference value between the vertical value of the inner hole of the bearing area and the vertical value of the inner hole of the positioning boss.
Optionally, aligning the center of the positioning boss inner hole with the center of the bearing area inner hole further includes:
and adjusting the numerical value of the center of the shell to be 0.08mm-0.1mm in the vertical and horizontal direction.
Optionally, processing the positioning boss sidewall of the abdominal cavity of the housing includes:
firstly, carrying out first processing on one side of the positioning boss;
checking the verticality of the side wall of the positioning boss and the contact surface of the shell by striking a table;
and carrying out secondary processing on one side of the positioning boss.
Optionally, the allowance of performing the first processing on the inner hole of the positioning boss of the abdominal cavity of the shell and the allowance of performing the first processing on the side wall of the positioning boss of the abdominal cavity of the shell are both 0.5mm-1mm.
Optionally, the roughness of the second machining of the inner hole of the positioning boss of the abdominal cavity of the shell and the roughness of the second machining of the side wall of the positioning boss of the abdominal cavity of the shell are both ra3.2.
Advantageous effects
According to the method for machining the abdominal cavity of the horizontal split compressor shell for boring machine machining, provided by the embodiment of the invention, the fixing device is connected with the boring machine workbench, the shell is lifted through the lifting rope, the contact surface of the shell is perpendicular to the horizontal plane, and the shell is connected with the fixing device, so that the first machining and the second machining of the inner hole of the positioning boss of the shell are realized, and the machining precision of the inner hole of the positioning boss of the shell and the clamping precision of the shell are improved. The cutter flower and the cutter receiving table which are produced by boring machine processing are small, and the roughness is improved, so that the positioning boss processed by the boring machine has high precision.
Drawings
Fig. 1 is a schematic flow chart of a housing abdominal cavity positioning process according to an embodiment of the present application;
FIG. 2 is a schematic structural view of a fixing device according to an embodiment of the present application;
FIG. 3 is a schematic bottom view of a fixing device according to an embodiment of the present disclosure;
fig. 4 is a schematic cross-sectional view of a mounting groove according to an embodiment of the present application.
The reference numerals are expressed as:
1. a housing; 2. a fixing device; 3. a positioning groove; 4. a mounting groove; 5. a positioning block; 6. a working table.
Detailed Description
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
Referring to fig. 1 to 4 in combination, according to an embodiment of the present application, a boring machine processing level split compressor housing abdominal cavity processing method, the compressor includes a housing 1, the housing 1 includes a first housing and a second housing, the first housing and the second housing are in contact to form a contact surface; the method comprises the following steps: placing the contact surface of the housing 1 perpendicular to a horizontal plane; performing first machining on an inner hole of a positioning boss of the abdominal cavity of the shell 1; centering the center of the inner hole of the positioning boss by taking the center of the inner hole of the bearing area as a reference; performing secondary processing on an inner hole of the positioning boss of the abdominal cavity of the shell 1; the side wall of the positioning boss of the abdominal cavity of the housing 1 is processed. Through with the contact surface of compressor housing 1 with the horizontal plane perpendicular, carry out the first processing of location boss hole, and carry out the alignment back, carry out the secondary processing again, later process location boss lateral wall, owing to set up the contact surface of compressor with the horizontal plane is perpendicular, not only improve the positioning accuracy to housing 1 in subsequent course of working, the precision to the clamping of housing 1, and improve housing 1's machining precision, reduce the processing cost.
Further, the first casing and the second casing of the compressor are separated from each other, wherein the cross-sectional shape of the first casing and the second casing combined together is a circular ring, and the surfaces of the first casing and the second casing contacting each other are contact surfaces, i.e., bisecting surfaces.
Furthermore, the shell 1 of the compressor is an MCL shell, the middle split surface of the shell 1 is required to be lifted by a lifting rope by processing a positioning boss in the abdominal cavity of the MC shell through a numerical control boring and milling machine, and the contact surface, namely the middle split surface, is in a vertical state, namely is placed vertically to a horizontal plane.
Further, after the shell 1 is installed and aligned, an inner hole of the positioning boss is machined through the accessory right-angle head, and the accessory right-angle head is provided with the three-edge cutterhead, wherein the diameter of the cutterhead is phi 400mm, the thickness of the cutterhead is 28mm, the number of teeth is 33, and the inner hole of the positioning boss is machined through the three-edge cutterhead, and machining allowance of 0.5-1 mm is reserved. And after processing, measuring the residual quantity of the inner hole by using an inner hole micrometer, and meeting the range of the dimension on the drawing.
Further, the coaxiality of the inner hole of the machined positioning boss and the inner hole of the bearing area is checked by utilizing a dial indicator, the difference value at the bottom and the difference value at two sides of the bisector are required to be checked by the dial indicator, and the Z-axis and Y-axis coordinates of the machine tool are adjusted according to the difference value conditions so as to ensure the coaxiality of the machined positioning boss inner hole and the inner hole of the bearing area of the shell 1.
Further, after the center of the inner hole of the positioning boss is aligned, the inner hole of the positioning boss is subjected to finish machining. In the machining process, the shell 1 is machined into a large semicircle by taking the thermal expansion of the unit operation into consideration, and the center of the shell 1 is adjusted to be 0.08-0.10 mm in the direction of the shell. And after processing, measuring the inner hole size of the positioning boss by using an inside micrometer, and meeting the drawing requirement.
Further, after the second machining, namely after finish machining, the roughness is checked to meet the requirement of the drawing Ra3.2, and after the roughness meets the requirement, the cutter is arranged to finish the machining of the inner hole size of the first positioning boss. And finishing the machining of the inner hole sizes of other positioning bosses of the H2960 shell 1 by using the same machining method. The surface quality is better than that of planer type milling, the cutter flower is very small, and the processing quality is improved.
Further, after the second processing of the rancour positioning boss inner hole, the requirements of the drawing are met, the side wall of the positioning boss is processed, wherein the side wall of the positioning boss is a surface on two sides, and the processing ensures the width dimension of the two sides.
Further, one side surface of the positioning boss is processed through the three-edge cutter disc, a machining allowance of 0.5mm-1mm is reserved, after machining, the perpendicularity between the machined side surface of the positioning boss and the contact surface of the shell 1, namely the bisector surface, is checked through a dial indicator, the machined side surface is inclined by 0.04mm after the dial indicator is checked, the change of the X axis of the machine tool is increased according to the inclined direction, and the machining of the side surface of the positioning boss is completed through the three-axis linkage of the machine tool.
Further, through the processing after the adjustment, the surface of processing is checked again through the dial indicator, and the indicator value is unchanged, namely the indicator display value is unchanged all the time and is zero all the time. Namely, the processing is completed.
Further, the other side surface is processed by the same method. Before machining, measuring the width allowance of the positioning boss by using a common normal micrometer to be 0.5mm, and machining to the drawing size according to the allowance.
Before positioning the contact surface of the housing 1 in a vertical horizontal plane, it comprises: the housing 1 is placed in the middle of at least two fixtures 2, one side of the housing 1 is in contact with one of the fixtures 2 and is connected to the one of the fixtures 2, and the other side of the housing 1 is in contact with the other of the fixtures 2 and is connected to the other of the fixtures 2. The shell 1 is fixedly connected through the fixing devices 2, so that the shell 1 is positioned and clamped, the shell 1 is fixed through at least two fixing devices 2, the clamping precision of the shell 1 is improved, and the machining precision of the shell 1 is improved.
Further, according to the external dimensions of the shell 1 of the MCL700-900, the corresponding clamping fixing device 2 is further designed, the clamping precision is improved, the positioning precision of the shell 1 is further improved, and the machining precision of the shell 1 is improved.
Further, when two fixing devices 2 are provided, the two fixing devices are located at two sides of the casing 1, and when the contact surface of the casing 1 is perpendicular to the horizontal plane, the two sides of the casing 1 are fixedly connected with each other through bolts and the fixing devices 2. Four corners of the shell 1 are mutually connected through bolts and the fixing device 2, so that the connection stability is improved.
Further, the fixture 2 is analyzed according to a finite element analysis model, wherein it is mesh-dissected in an ANSYS environment, resulting in a finite element mesh model. The finite element model of the fixing device 2 consists of 143693 units and 241613 nodes, and a 10-node tetrahedral unit Solid187 is adopted to build a finite element grid model. The load carrying capacity of the fixture 2 is high, and the machining cutting load of the fixture 2 is improved.
Placing the housing 1 in the middle of at least two fixtures 2, contacting one side of the housing 1 with one of the fixtures 2 and connecting with the one of the fixtures 2, contacting the other side of the housing 1 with the other fixture 2 and connecting with the other fixture 2, comprising, before: processing empty slots on the bottom plane wall and the vertical plane wall of at least two fixing devices 2; machining positioning grooves 3 on the bottom plane walls of the at least two fixing devices 2; machining an installation groove 4 on a boring machine workbench 6, and installing a positioning block 5 in the installation groove 4; the positioning block 5 on the workbench 6 is placed into the positioning groove 3 on the fixing device 2, and the positioning block 5 is contacted with the positioning groove 3; the facades of at least two of said fixtures 2 are machined. Through the processing to fixing device 2, and then realize fixing device 2's fixed, improve the positioning accuracy when fixed casing 1 simultaneously to the precision when clamping casing 1.
Furthermore, the processing of empty slots on the bottom plane wall and the vertical plane wall of the fixing device 2 reduces the contact area of the contact surface of the fixing device 2 and the shell 1, and improves the positioning accuracy of the clamping shell 1 of the fixing device 2.
Further, the boring machine workbench 6 is provided with a mounting groove 4, wherein the mounting groove 4 is a T-shaped groove. And (3) performing meter marking detection precision on the T-shaped groove, wherein the meter marking value is 0.02, namely the T-shaped groove meets the use standard. The straight slot size of the T-shaped slot is 28mm+0.02mm.
Further, the empty groove of the bottom plane wall of the fixing device 2 is processed, and two positioning grooves 3 are processed on the bottom plane wall at the same time, wherein the positioning grooves 3 are positioning key grooves, the width of each positioning key groove is 28mm, and the length of each positioning key groove is 100mm. The positioning key groove is used for positioning the bottom, so that the fixing device 2 is prevented from being displaced due to cutting force in the machining process, and the machining and manufacturing precision of the abdominal cavity positioning boss of the shell 1 is prevented from being affected.
Further, after the bottom surface is machined, the two fixing devices 2 are installed on the workbench 6, wherein the positioning block 5 is installed in the positioning groove 3 on the workbench 6, and the positioning block 5 is a positioning key. After the fixing devices 2 are positioned, the vertical faces of the two fixing devices 2 are machined by using a face milling cutter disc, so that the vertical faces of the two fixing devices 2 can be ensured to be parallel to each other. After processing, checking the vertical faces of the two fixing devices 2 by checking the surface, and checking the surface value by 0.01. The machining precision can meet the use requirement of the tool.
Placing the contact surface of the housing 1 perpendicular to a horizontal plane includes: placing the contact surface of the housing 1 on a horizontal plane; lifting the shell 1 by a lifting rope; the shell 1 is turned over, and the contact surface of the shell 1 is perpendicular to the horizontal plane. The shell is lifted by the lifting rope, the contact surface is vertical to the horizontal plane, and further the mutual connection between the shell 1 and the fixing device 2 is realized, the efficiency of clamping the shell 1 is improved, and meanwhile, the clamping precision is improved.
Further, each of four corners of the contact surface of the shell 1 is provided with an annular hanging ring, so that the shell 1 is lifted by the hanging rope, and the hanging rope penetrates through the annular hanging ring and is fixedly connected with the annular hanging ring, so that the shell 1 is lifted by the hanging rope, wherein the hanging rope is a steel wire rope, and the lifting stability is improved.
Further, firstly, the contact surface of the MCL shell 1, namely the middle split surface, is downwards placed on the square timber apron, four annular hanging rings are installed on one side of the contact surface of the shell 1, namely the middle split surface, then four equal-length hanging ropes are used for hanging, two hanging rings for hanging the middle split surface on one side of the shell 1 are used for hanging, and the other two hanging rings are used for hanging the installed annular hanging rings. After the shell 1 is horizontally lifted, the small hook of the crown block slowly descends, and the middle part of the shell 1 is gradually lifted into a vertical state. The annular hanging ring is mounted, so that the situation that the split surfaces in the shell 1 are knocked and scratched when the split surfaces are hoisted in the air to be vertical is effectively avoided, and the hanging rope does not damage paint of the shell plate of the shell 1 in the hoisting process.
Before the shell 1 is lifted by the lifting rope, the method further comprises the following steps: and hanging rings are uniformly arranged on the outer side of the contact surface of the shell 1. Wherein, through the installation of rings, the lifting rope of being convenient for passes rings, promotes casing 1, improves the efficiency that promotes casing 1.
Furthermore, each of four corners of the contact surface of the shell 1 is provided with a hanging ring, so that the stability of fixation is improved.
Centering the center of the positioning boss inner hole with the center of the bearing area inner hole comprises: the transverse numerical value of the inner hole of the bearing area is measured by a meter; the transverse numerical value of the inner hole of the positioning boss is measured by a meter; and checking that the inner hole of the positioning boss and the inner hole of the bearing area are in concentric positions according to the difference value between the transverse value of the inner hole of the bearing area and the transverse value of the inner hole of the positioning boss and the difference value between the vertical value of the inner hole of the bearing area and the vertical value of the inner hole of the positioning boss. And the coaxiality of the inner hole of the positioning boss and the inner hole of the bearing area is determined through the difference value of the transverse numerical value and the vertical numerical value, so that the positioning accuracy of the inner hole of the positioning boss is improved, and the machining accuracy is improved.
Further, according to the check of typing, horizontal numerical value and vertical numerical value, then according to the difference of horizontal numerical value of location boss hole and the horizontal numerical value of bearing district hole, the vertical numerical value of location boss hole and the vertical numerical value of bearing district hole, according to the coordinate of difference adjustment lathe Z axle, Y axle, and then guarantee the axiality of the location boss hole of processing and the hole of bearing district.
Centering the center of the positioning boss inner hole with the center of the bearing area inner hole further comprises: and adjusting the numerical value of the center of the shell 1 to be 0.08mm-0.1mm in the vertical and horizontal direction. According to the processing position of the shell, the shell 1 is adjusted up and down, and the processing precision of the inner hole of the positioning boss of the shell 1 is improved.
Further, the value of the center of the adjustment housing 1 is preferably 0.09mm, and is generally adjusted according to the thermal expansion amount of the unit operation during the processing of the housing 1.
Machining the positioning boss side wall of the abdominal cavity of the housing 1 includes: firstly, carrying out first processing on one side of the positioning boss; checking the verticality of the contact surface between the side wall of the positioning boss and the shell 1 by striking a surface; and carrying out secondary processing on one side of the positioning boss. After the first machining, alignment is carried out, the second machining is carried out, and the machining precision of the side wall of the positioning boss is improved.
Further, the first machining is rough machining, the second machining is finish machining, machining allowance is reserved through rough machining, finish machining is performed, machining is completed, and surface roughness is improved.
The allowance of the first machining of the inner hole of the positioning boss of the abdominal cavity of the shell 1 is 0.5mm-1mm.
Further, the width allowance is preferably 0.06mm, and is measured by a common normal micrometer, so that the machining precision is improved.
The roughness of the second machining of the inner hole of the positioning boss of the abdominal cavity of the shell 1 and the roughness of the second machining of the side wall of the positioning boss of the abdominal cavity of the shell 1 are both Ra3.2. And the surface roughness is improved by using the boring machine.
This application is through 2 and boring machine workstation 6 interconnect with fixing device, hangs casing 1 through the lifting rope simultaneously, with the contact surface and the horizontal plane mutually perpendicular of casing 1, simultaneously with casing 1 and fixing device 2 interconnect, realizes carrying out first processing and second processing to the location boss hole of casing 1, improves the machining precision to the location boss hole of casing 1 to and the precision to the clamping of casing 1. The cutter flower and the cutter receiving table which are produced by boring machine processing are small, and the roughness is improved, so that the positioning boss processed by the boring machine has high precision.
It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.
The foregoing description of the preferred embodiment of the present invention is not intended to limit the invention to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The foregoing is merely a preferred embodiment of the present application and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principles of the present application, and these modifications and variations should also be regarded as the scope of the present application.
Claims (8)
1. The boring machine processing level subdivision compressor shell abdominal cavity processing method is characterized in that a compressor comprises a shell (1), wherein the shell (1) comprises a first shell and a second shell, the combined shape of the first shell and the second shell is a circular ring, and the first shell and the second shell are contacted to form a contact surface;
the method comprises the following steps:
according to the external dimension of the shell, two corresponding fixing devices are designed;
processing positioning grooves (3) on the bottom plane walls of the two fixing devices (2);
machining an installation groove (4) on a boring machine workbench (6), and installing a positioning block (5) in the installation groove (4);
the positioning block (5) on the workbench (6) is placed into the positioning groove (3) on the fixing device (2), and the positioning block (5) is contacted with the positioning groove (3);
machining the vertical surfaces of the two fixing devices (2);
placing the shell between the two fixing devices (2), wherein the contact surface of the shell (1) is placed vertically to the horizontal plane;
the two sides of the shell are fixedly connected with each other through bolts and fixing devices, and four corners of the shell are connected with each other through bolts and fixing devices;
performing first machining on an inner hole of a positioning boss of an abdominal cavity of the shell (1);
centering the center of the inner hole of the positioning boss by taking the center of the inner hole of the bearing area as a reference;
performing a second machining of the inner hole of the positioning boss of the abdominal cavity of the shell (1);
and processing the side wall of the positioning boss of the abdominal cavity of the shell (1).
2. The boring machine processing level splitting compressor housing abdominal cavity processing method according to claim 1, characterized in that placing the contact surface of the housing (1) perpendicular to a horizontal plane comprises:
-placing the contact surface of the housing (1) onto a horizontal plane;
lifting the shell (1) by a lifting rope;
the shell (1) is turned over, and the contact surface of the shell (1) is perpendicular to the horizontal plane.
3. The boring machine processing level splitting compressor housing abdominal cavity processing method according to claim 2, further comprising, before lifting the housing (1) by a lifting rope:
and hanging rings are uniformly arranged on the outer side of the contact surface of the shell (1).
4. The boring machine tooling level split compressor housing abdominal cavity machining method of claim 1, wherein centering the positioning boss bore with the center of the bearing area bore comprises:
the transverse numerical value of the inner hole of the bearing area is measured by a meter;
the transverse numerical value of the inner hole of the positioning boss is measured by a meter;
and checking that the inner hole of the positioning boss and the inner hole of the bearing area are in concentric positions according to the difference value between the transverse value of the inner hole of the bearing area and the transverse value of the inner hole of the positioning boss and the difference value between the vertical value of the inner hole of the bearing area and the vertical value of the inner hole of the positioning boss.
5. The boring machine tooling level splitting compressor housing abdominal cavity machining method of claim 4, wherein centering the positioning boss bore with the center of the bearing area bore further comprises:
and adjusting the numerical value of the center of the shell (1) to be 0.08mm-0.1mm in the vertical and horizontal direction.
6. The boring machine processing level splitting compressor housing abdominal cavity processing method according to claim 1, characterized in that processing the positioning boss side wall of the abdominal cavity of the housing (1) comprises:
firstly, carrying out first processing on one side of the positioning boss;
checking the verticality of the contact surface between the side wall of the positioning boss and the shell (1) by striking a table;
and carrying out secondary processing on one side of the positioning boss.
7. The boring machine processing level splitting compressor housing abdominal cavity processing method according to claim 6, characterized in that the allowance of the first processing of the positioning boss inner hole of the abdominal cavity of the housing (1) and the allowance of the first processing of the positioning boss side wall of the abdominal cavity of the housing (1) are both 0.5mm-1mm.
8. The boring machine processing level splitting compressor housing abdominal cavity processing method according to claim 6, characterized in that the roughness of the positioning boss inner hole of the abdominal cavity of the housing (1) for the second processing and the roughness of the positioning boss side wall of the abdominal cavity of the housing (1) for the second processing are both ra3.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210467162.0A CN114799755B (en) | 2022-04-29 | 2022-04-29 | Method for machining abdominal cavity of horizontal split compressor shell by boring machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210467162.0A CN114799755B (en) | 2022-04-29 | 2022-04-29 | Method for machining abdominal cavity of horizontal split compressor shell by boring machine |
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| CN114799755A CN114799755A (en) | 2022-07-29 |
| CN114799755B true CN114799755B (en) | 2023-08-04 |
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Citations (6)
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| CN110052859A (en) * | 2019-05-10 | 2019-07-26 | 海宁弘德机械有限公司 | A kind of compressor housing tooling |
| CN111037362A (en) * | 2019-12-18 | 2020-04-21 | 沈阳鼓风机集团核电泵业有限公司 | Machining and aligning method for split type part |
| CN212886243U (en) * | 2020-07-11 | 2021-04-06 | 天津市明远金属制品有限公司 | Positioning fixture is used in processing of casing inner chamber |
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| US20130309085A1 (en) * | 2012-05-15 | 2013-11-21 | Solar Turbines Incorporated | Compressor case overhaul |
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| CN204449436U (en) * | 2014-12-16 | 2015-07-08 | 北京航天新风机械设备有限责任公司 | The horizontal milling attachment of a kind of housing cavity |
| CN107984166A (en) * | 2017-11-01 | 2018-05-04 | 沈阳透平机械股份有限公司 | The abdominal cavity processing method of horizonally split formula centrifugal compressor casing |
| CN109648260A (en) * | 2018-12-10 | 2019-04-19 | 哈尔滨汽轮机厂有限责任公司 | A kind of microstome, large cavity bearing block shell processing method |
| CN110052859A (en) * | 2019-05-10 | 2019-07-26 | 海宁弘德机械有限公司 | A kind of compressor housing tooling |
| CN111037362A (en) * | 2019-12-18 | 2020-04-21 | 沈阳鼓风机集团核电泵业有限公司 | Machining and aligning method for split type part |
| CN212886243U (en) * | 2020-07-11 | 2021-04-06 | 天津市明远金属制品有限公司 | Positioning fixture is used in processing of casing inner chamber |
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| CN114799755A (en) | 2022-07-29 |
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