CN114833367A - Processing technology for bearing hole and oil seal hole of new energy motor casing - Google Patents
Processing technology for bearing hole and oil seal hole of new energy motor casing Download PDFInfo
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- CN114833367A CN114833367A CN202210603953.1A CN202210603953A CN114833367A CN 114833367 A CN114833367 A CN 114833367A CN 202210603953 A CN202210603953 A CN 202210603953A CN 114833367 A CN114833367 A CN 114833367A
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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
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
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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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Abstract
The invention relates to a processing technology for a bearing hole and an oil seal hole of a new energy motor shell, which is characterized in that a workpiece is clamped on a tool clamp and is clamped in an oil pressure mode, wherein the workpiece is a motor shell; rotating the workpiece to 180 degrees by rotating the workbench of the machine tool; roughly machining a bearing hole and an oil seal hole; then, finish machining is carried out on the bearing hole and the oil seal hole; and after the machining is finished, stopping the finish machining tool, stopping the main shaft, quickly moving out of the machining hole, and finishing the machining. According to the invention, the machining tool for the oil seal hole is combined on the guide strip tool of the bearing, so that the high-precision cylindricity of the bearing hole and the coaxiality of the bearing hole and the oil seal hole can be ensured, meanwhile, the smooth connection between the processed orifice fillet of the oil seal hole and the hole wall is ensured, and the machining efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of die-casting aluminum alloy machining, and mainly relates to a machining process for a bearing hole and an oil seal hole of a new energy motor shell.
Background
At present, with the rapid development of new energy automobiles and the diversity of automobile products, the new energy automobile products are more and more complex in structure and high in machining precision and requirements. The motor shell speed reducer surface bearing hole and the oil seal hole are coaxially processed, the cylindricity of the bearing hole (a processing cutter is a guide strip) is required to be 0.01, and the chamfer part is smoothly connected with the fillet of the inner wall of the hole. The traditional machining process oil seal hole machining tool cannot be subjected to composite coaxial machining with a bearing hole guide strip tool, needs to be separately machined, and accordingly coaxiality requirements of an oil seal hole and a bearing hole cannot be guaranteed, the phenomenon of bearing blocking is caused due to the fact that the size is out of tolerance, and machining efficiency is low.
Disclosure of Invention
The invention aims to provide a processing technology for a bearing hole and an oil seal hole of a new energy motor shell, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a processing technology for a bearing hole and an oil seal hole of a new energy motor shell comprises the following specific steps:
A. clamping a workpiece on a tool clamp, and clamping the workpiece in an oil pressure mode, wherein the workpiece is a motor shell;
B. rotating the workpiece to 180 degrees by rotating the workbench of the machine tool;
C. rough machining of bearing holes and oil seal holes: designing a multi-section bearing hole and an oil seal hole to be compounded on a rough cutter for machining, wherein the allowance of a finish machining single side is reserved for rough machining by 0.15 mm;
D. finish machining of a bearing hole and an oil seal hole: the finish machining tool rapidly moves to a position of-70.21 mm of a machining hole opening under the static state of the main shaft, the moving speed is 60m/min, the finish machining tool deviates 6.5mm from the center to the positive direction of the X axis, namely the center of the tool is not concentric with the center of the machining hole;
E. the finish machining tool is deep into the machining hole along the negative direction of the Z axis to the position of-121.75 mm, namely the distance between the cutting edge of the finish machining tool and the machining hole is 3 mm;
F. the finish machining cutter deviates 6.5mm along the negative direction of the X axis, and the center of the cutter is coaxial with the center of the machining hole;
G. the finish machining cutter rotates at a high speed, the rotating speed is 4000rpm, and the rotating speed of a main shaft is increased to 2000 revolutions per minute;
H. the finish machining cutter is deep to the position of minus 154.3mm along the negative direction of the Z axis, namely the inner wall of the bearing hole is finely bored;
I. the finish machining tool continuously moves upwards to a position of minus 104.25mm along the positive direction of the Z axis, namely the inner wall of the bearing hole, the inner wall of the oil seal hole and the orifice fillet are machined simultaneously;
J. after the machining is finished, the finish machining tool is deep to the position of-121.75 mm along the negative direction of the Z axis, the finish machining tool stops, and the main shaft stops rotating;
K. and (4) moving the finish machining cutter by 6.5mm along the positive direction of the X axis, then lifting the cutter to a position of-70.21 mm of the hole opening along the positive direction of the Z axis, quickly moving out of the machined hole at the moving speed of 60m/min, and finishing machining.
The invention is further improved in that: the roughing cutter comprises a roughing cutter connecting handle and a roughing cutter body, and a plurality of roughing cutter blades are arranged on the roughing cutter body.
The invention is further improved in that: and the rough cutter completes the processing of a bearing hole, the rough opening of an oil seal hole and a 25-degree chamfer angle of a bearing hole opening by using a step difference blade with the blade length of 17 mm.
The invention is further improved in that: the finish machining tool comprises a connecting tool handle of the finish machining tool and a tool body of the finish machining tool, the tool body of the finish machining tool is a composite boring tool of the bearing hole finish machining tool and the oil seal hole finish machining tool, and a reverse boring structure is arranged at the front end of the tool body of the oil seal hole finish machining tool and combined with a forming tool holder to complete connection machining of a hole wall and an orifice fillet of an oil seal.
The invention is further improved in that: one side of the cutter body of the bearing hole finish machining cutter is provided with a blade, and the other side of the cutter body is provided with a guide strip.
The invention is further improved in that: the blade is an adjustable tool holder, the guide bar is fixed on the other side of the cutter body, and the diameter of the blade needs to be adjusted during processing, so that the diameter of the blade is 0.005mm-0.008mm larger than that of the guide bar.
The invention is further improved in that: finish machining cutter uses the ring flange structural connection, can calibrate finish machining cutter handle of a knife and beat on the main shaft before the use, and it can finely tune to 0.002mm to beat.
Compared with the prior art, the invention has the beneficial effects that:
the invention can ensure high-precision bearing hole cylindricity and bearing hole and oil seal hole coaxiality, and simultaneously ensure smooth connection between the processed orifice fillet of the oil seal hole and the hole wall, thereby improving the processing efficiency.
Drawings
FIG. 1 is a schematic structural view of a motor housing;
fig. 2 is a schematic structural view of the motor housing after being rotated by 180 degrees;
FIG. 3 is a cross-sectional view of a machined hole;
FIG. 4 is a schematic view of a rough cutting knife;
FIG. 5 is a schematic structural diagram of step D;
FIG. 6 is a schematic structural diagram of step E;
FIG. 7 is a schematic structural view of step F;
FIG. 8 is a schematic structural view of step H;
FIG. 9 is a schematic structural view of step I;
FIG. 10 is a schematic structural view of step J;
FIG. 11 is a schematic structural view of step K;
FIG. 12 is a schematic structural view of step K;
FIG. 13 is a schematic view of the structure of the roughing knife;
FIG. 14 is a schematic view of a finishing tool configuration;
reference numbers in the figures: 1-workpiece, 2-processing bearing hole, 3-processing oil seal hole, 4-rough cutter, 5-finish machining composite boring cutter, 5-1-oil seal hole finish machining cutter, 5-2-bearing hole finish machining cutter, 5-2-1-blade and 5-2-2-guide bar.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The embodiment provides a technical scheme: a processing technology for a bearing hole and an oil seal hole of a new energy motor shell comprises the following specific processing steps:
firstly, clamping a workpiece on a tool clamp, and clamping the workpiece in an oil pressure mode, wherein the workpiece is a motor shell. Thereafter, the work is rotated to 180 ° by rotating the table by the machine tool.
Then, rough machining is carried out on the bearing hole and the oil seal hole: designing a multi-section bearing hole and an oil seal hole to be compounded on a rough cutter for machining, wherein the allowance of a finish machining single side is reserved for rough machining by 0.15 mm; the rough cutter comprises a rough cutter connecting handle and a rough cutter body, and a plurality of rough cutter blades are arranged on the rough cutter body; the rough cutter uses a segment difference blade with the edge length of 17mm to finish the processing of a bearing hole, the rough opening of an oil seal hole and a 25-degree chamfer angle of a bearing hole opening, the edge length is 18 +/-0.05 mm, and the cutter body has the function of fine adjustment of jumping on a main shaft.
And then, carrying out finish machining on the bearing hole and the oil seal hole: the finish machining tool moves to a position of-70.21 mm of a machining hole at a speed of 60m/min under the static state of the main shaft, and the finish machining tool deviates 6.5mm from the center to the positive direction of the X axis, namely the center of the tool is not concentric with the center of the machining hole; the finish machining tool is deep into the machining hole from-121.75 mm in the negative direction of the Z axis, namely the cutting edge of the finish machining tool is close to the machining hole by 3 mm; the finish machining cutter deviates 6.5mm along the negative direction of the X axis, and the center of the cutter is coaxial with the center of the machining hole; the finish machining cutter rotates at a high speed, the rotating speed is 4000rpm, and the rotating speed of a main shaft is increased to 2000 revolutions per minute; the finish machining cutter is deep to the position of minus 154.3mm along the negative direction of the Z axis, namely the inner wall of the bearing hole is finely bored; and (4) continuously moving the finish machining tool upwards to a position of minus 104.25mm along the positive direction of the Z axis, namely simultaneously machining the inner wall of the bearing hole, the inner wall of the oil seal hole and the orifice fillet. The finish machining tool comprises a connecting tool handle of the finish machining tool and a tool body of the finish machining tool, the tool body of the finish machining tool is a composite boring tool of the bearing hole finish machining tool and the oil seal hole finish machining tool, a reverse boring structure is arranged at the front end of the tool body of the oil seal hole finish machining tool and combined with a forming tool holder to complete connection machining of an oil seal hole wall and an orifice fillet, the tool body of the bearing hole finish machining tool is provided with a blade on one side and a guide strip on the other side; the blade is an adjustable tool holder, the guide bar is fixed on the other side of the tool body, and the diameter of the blade needs to be adjusted during processing, so that the diameter of the blade is 0.005mm-0.008mm larger than that of the guide bar; finish machining cutter uses the ring flange structural connection, can calibrate finish machining cutter handle of a knife and beat on the main shaft before the use, and it can finely tune to 0.002mm to beat.
Finally, after the machining is finished, the finish machining tool is deep down to the position of-121.75 mm along the negative direction of the Z axis, the finish machining tool stops, and the main shaft stops rotating; and (4) moving the finish machining cutter by 6.5mm along the positive direction of the X axis, then lifting the cutter to the position of-70.21 mm of the hole opening along the positive direction of the Z axis, moving out the machined hole at the speed of 60m/min, and finishing machining.
According to the invention, the machining tool for the oil seal hole is combined on the guide strip tool of the bearing, so that the high-precision cylindricity of the bearing hole and the coaxiality of the bearing hole and the oil seal hole can be ensured, meanwhile, the smooth connection between the processed orifice fillet of the oil seal hole and the hole wall is ensured, and the machining efficiency is improved.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, article, or apparatus.
Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A processing technology for a bearing hole and an oil seal hole of a new energy motor casing is characterized by comprising the following steps of: the method comprises the following specific steps:
A. clamping a workpiece on a tool clamp, and clamping the workpiece in an oil pressure mode, wherein the workpiece is a motor shell;
B. rotating the workpiece to 180 degrees by rotating the workbench of the machine tool;
C. rough machining of bearing holes and oil seal holes: designing a multi-section bearing hole and an oil seal hole to be compounded on a rough cutter for machining, wherein the allowance of a finish machining single side is reserved for rough machining by 0.15 mm;
D. finish machining of a bearing hole and an oil seal hole: the finish machining tool rapidly moves to a position of-70.21 mm of a machining hole opening under the static state of the main shaft, the moving speed is 60m/min, the finish machining tool deviates 6.5mm from the center to the positive direction of the X axis, namely the center of the tool is not concentric with the center of the machining hole;
E. the finish machining tool is deep into the machining hole along the negative direction of the Z axis to the position of-121.75 mm, namely the distance between the cutting edge of the finish machining tool and the machining hole is 3 mm;
F. the finish machining cutter deviates 6.5mm along the negative direction of the X axis, and the center of the cutter is coaxial with the center of the machining hole;
G. the finish machining cutter rotates at a high speed, the rotating speed is 4000rpm, and the rotating speed of a main shaft is increased to 2000 revolutions per minute;
H. the finish machining cutter is deep to the position of minus 154.3mm along the negative direction of the Z axis, namely the inner wall of the bearing hole is finely bored;
I. the finish machining tool continuously moves upwards to a position of minus 104.25mm along the positive direction of the Z axis, namely the inner wall of the bearing hole, the inner wall of the oil seal hole and the orifice fillet are machined simultaneously;
J. after the machining is finished, the finish machining tool is deep to the position of-121.75 mm along the negative direction of the Z axis, the finish machining tool stops, and the main shaft stops rotating;
K. and (4) moving the finish machining cutter by 6.5mm along the positive direction of the X axis, then lifting the cutter to a position of-70.21 mm of the hole opening along the positive direction of the Z axis, quickly moving out of the machined hole at the moving speed of 60m/min, and finishing machining.
2. The machining process for the bearing hole and the oil seal hole of the new energy motor casing according to claim 1 is characterized in that: the roughing cutter comprises a roughing cutter connecting handle and a roughing cutter body, and a plurality of roughing cutter blades are arranged on the roughing cutter body.
3. The machining process for the bearing hole and the oil seal hole of the new energy motor casing according to claim 1 or 2, characterized in that: and the rough cutter completes the processing of a bearing hole, the rough opening of an oil seal hole and a 25-degree chamfer angle of a bearing hole opening by using a step difference blade with the blade length of 17 mm.
4. The machining process for the bearing hole and the oil seal hole of the new energy motor casing according to claim 1 is characterized in that: the finish machining tool comprises a connecting tool handle of the finish machining tool and a tool body of the finish machining tool, the tool body of the finish machining tool is a composite boring tool of the bearing hole finish machining tool and the oil seal hole finish machining tool, and a reverse boring structure is arranged at the front end of the tool body of the oil seal hole finish machining tool and combined with a forming tool holder to complete connection machining of a hole wall and an orifice fillet of an oil seal.
5. The machining process for the bearing hole and the oil seal hole of the new energy motor casing according to claim 1 is characterized in that: one side of the cutter body of the bearing hole finish machining cutter is provided with a blade, and the other side of the cutter body is provided with a guide strip.
6. The machining process for the bearing hole and the oil seal hole of the new energy motor casing according to claim 5 is characterized in that: the blade is an adjustable tool holder, the guide bar is fixed on the other side of the cutter body, and the diameter of the blade needs to be adjusted during processing, so that the diameter of the blade is 0.005mm-0.008mm larger than that of the guide bar.
7. The machining process for the bearing hole and the oil seal hole of the new energy motor casing according to claim 4 is characterized in that: finish machining cutter uses the ring flange structural connection, can calibrate finish machining cutter handle of a knife and beat on the main shaft before the use, and it can finely tune to 0.002mm to beat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210603953.1A CN114833367A (en) | 2022-05-31 | 2022-05-31 | Processing technology for bearing hole and oil seal hole of new energy motor casing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210603953.1A CN114833367A (en) | 2022-05-31 | 2022-05-31 | Processing technology for bearing hole and oil seal hole of new energy motor casing |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204235234U (en) * | 2014-12-03 | 2015-04-01 | 临沂照华动力机械有限公司 | A kind of cylinder bore finishing fixture |
| CN104858471A (en) * | 2014-02-26 | 2015-08-26 | 陕西柴油机重工有限公司 | Method for machining cylinder holes in diesel engine body |
| CN111922652A (en) * | 2020-08-25 | 2020-11-13 | 雄邦压铸（南通）有限公司 | Machining process of bearing steel sleeve of automobile motor shell |
| CN113070503A (en) * | 2021-04-12 | 2021-07-06 | 广东鸿图南通压铸有限公司 | Machining method suitable for hole-breaking cylindricity of aluminum alloy multi-section bearing |
| CN113492234A (en) * | 2021-07-28 | 2021-10-12 | 广东鸿图南通压铸有限公司 | Machining process for machining end face of electric cabinet sensor of new energy automobile |
-
2022
- 2022-05-31 CN CN202210603953.1A patent/CN114833367A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104858471A (en) * | 2014-02-26 | 2015-08-26 | 陕西柴油机重工有限公司 | Method for machining cylinder holes in diesel engine body |
| CN204235234U (en) * | 2014-12-03 | 2015-04-01 | 临沂照华动力机械有限公司 | A kind of cylinder bore finishing fixture |
| CN111922652A (en) * | 2020-08-25 | 2020-11-13 | 雄邦压铸（南通）有限公司 | Machining process of bearing steel sleeve of automobile motor shell |
| CN113070503A (en) * | 2021-04-12 | 2021-07-06 | 广东鸿图南通压铸有限公司 | Machining method suitable for hole-breaking cylindricity of aluminum alloy multi-section bearing |
| CN113492234A (en) * | 2021-07-28 | 2021-10-12 | 广东鸿图南通压铸有限公司 | Machining process for machining end face of electric cabinet sensor of new energy automobile |
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