CN111112645A - Machining method for improving machining precision and perpendicularity of motor flange hole - Google Patents
Machining method for improving machining precision and perpendicularity of motor flange hole Download PDFInfo
- Publication number
- CN111112645A CN111112645A CN201911360834.2A CN201911360834A CN111112645A CN 111112645 A CN111112645 A CN 111112645A CN 201911360834 A CN201911360834 A CN 201911360834A CN 111112645 A CN111112645 A CN 111112645A
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- China
- Prior art keywords
- flange
- face
- perpendicularity
- hole
- fixing tool
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B1/00—Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
-
- 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
-
- 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
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
Abstract
The invention discloses a processing method for improving the processing precision and the perpendicularity of a motor flange hole, which relates to the field of flange hole processing and comprises the following steps: (a) processing a bolt hole on the upper end surface of the flange into a process screw hole to be connected with a fixing tool; the fixing tool is of a U-shaped structure, the bottom surface of the fixing tool is parallel to the plane, and two side surfaces of the fixing tool are perpendicular to the bottom surface; (c) finish turning the outer diameter, the end surface and the inner hole of the flange by a lathe; (d) after the inner hole is machined, a lower end face turning tool is used for finish turning the lower end face; the lower end face turning tool is of an L-shaped structure and comprises a vertical cutter bar and a cutter perpendicular to the cutter bar. Through the combined use of the fixed tool and the lower end face lathe assembling, the outer diameter of the flange, the end face, the inner hole and the lower end face can be ensured to be clamped at one time to complete the whole process.
Description
Technical Field
The invention relates to the field of flange hole machining, in particular to a machining method for improving machining precision and perpendicularity of a motor flange hole.
Background
In the process of assembling the flange, the perpendicularity of the flange assembly outer diameter and a plane and the perpendicularity of the flange assembly outer diameter and the lower end face are detected due to the fact that the assembly relation determines that the flange outer diameter is used as a reference and the flange end face is used as a first element to be detected. If the perpendicularity cannot be met, when the gear shaft is assembled, internal torsion (such as part A in fig. 1) is generated, the fatigue fracture tendency of the gear in the transmission process is increased, and the assembly of the flange and the service life and the design requirements of the subsequent gear shaft are seriously influenced. At present, the motor flange can be machined only by twice clamping in the machining process, and the precision and the verticality of a machined motor flange hole cannot be guaranteed.
Disclosure of Invention
The invention provides a processing method for improving the processing precision and the verticality of a motor flange hole, and solves the problem that the precision and the verticality of the existing motor flange hole cannot be guaranteed.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a processing method for improving the processing precision and the verticality of a motor flange hole comprises the following steps:
(a) processing a bolt hole on the upper end surface of the flange into a process screw hole to be connected with a fixing tool; the fixing tool is of a U-shaped structure, the bottom surface of the fixing tool is parallel to the plane, and two side surfaces of the fixing tool are perpendicular to the bottom surface;
(c) finish turning the outer diameter, the end surface and the inner hole of the flange by a lathe;
(d) after the inner hole is machined, a lower end face turning tool is used for finish turning the lower end face; the lower end face turning tool is of an L-shaped structure and comprises a vertical cutter bar and a cutter perpendicular to the cutter bar.
Preferably, the flange is a steel casting, the material is ZG25SiMn, and the hardness is HB 220-240.
Preferably, the lathe is a numerical control vertical lathe, and the machining precision is 0.015mm/1000 mm.
Preferably, the cutting tool is a german SANDVIK stainless steel blade.
Preferably, the following steps are further included between the steps (a) and (c): (b) and (5) re-calibrating the outer diameter machined by the lathe, and ensuring that the end face runout is less than or equal to 0.05 mm.
Preferably, the torsion force when the clamping flange is connected is 60-70N.
By adopting the technical scheme, the processing method provided by the invention can ensure that the whole process is completed by one-time clamping of the outer diameter, the end surface, the inner hole and the lower end surface of the flange through combined use of the fixing tool and the turning tool assembly of the lower end surface, and the processing precision of the flange is ensured without carrying out secondary or repeated clamping on the flange; the perpendicularity of the upper end face and the inner hole of the flange can be guaranteed through the U-shaped fixing tool, and the perpendicularity of the inner hole of the flange and the lower end face can be guaranteed through the L-shaped lower end face turning tool.
Drawings
FIG. 1 is a schematic structural diagram of a gear shaft assembled on a flange of a conventional motor;
FIG. 2 is a schematic structural view of a flange according to the present invention.
In the figure, 1-flange, 2-bolt hole, 3-fixing tool, 4-cutter bar and 5-cutter.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
As shown in fig. 2, a processing method for improving the processing precision and the perpendicularity of a motor flange hole comprises the following steps:
(a) processing a bolt hole 2 on the upper end surface of the flange 1 into a process screw hole to be connected with a fixing tool 3; the fixing tool 3 is of a U-shaped structure, the bottom surface of the fixing tool 3 is parallel to a plane, and two side surfaces of the fixing tool 3 are perpendicular to the bottom surface;
(c) finish turning the outer diameter, the end surface and the inner hole of the flange 1 by a lathe;
(d) after the inner hole is machined, a lower end face turning tool is used for finish turning the lower end face; the lower end face turning tool is of an L-shaped structure and comprises a vertical cutter bar 4 and a cutter 5 perpendicular to the cutter bar 4, when the lower end face turning tool is used, the vertical cutter bar 4 is installed on a lathe, the cutter 5 is horizontally installed at the bottom of the cutter bar 4, and the lower end face of the flange 1 is finely turned under the driving of the lathe.
In order to ensure the effective supporting force of the flange 1 on the motor, the flange 1 is a steel casting, the material is ZG25SiMn, and the hardness is HB 220-240.
In order to ensure the machining precision of the lathe, the lathe is a numerical control vertical lathe, and the machining precision is 0.015mm/1000 mm.
In order to ensure effective finish turning of the flange 1, the cutter 5 is a german SANDVIK stainless steel blade, which can ensure effective precision.
In order to ensure the processing precision and effectiveness of the invention, the following steps are also included between the steps (a) and (c): (b) the outer diameter processed by the lathe is re-calibrated, and the end face run-out is ensured to be less than or equal to 0.05 mm; the processing precision and reliability can be further ensured.
In order to prevent the flange 1 from being damaged in the process of clamping and connecting the flange 1, the torsion force when the flange is connected and clamped is 60-70N, and the deformation of a clamped workpiece cannot occur to influence the machining precision.
According to the processing method, the fixed tool 3 and the lower end face are combined for use, so that the outer diameter, the end face, the inner hole and the lower end face of the flange 1 can be clamped once to complete the whole process, the flange 1 does not need to be clamped for two times or multiple times, and the processing precision of the flange 1 is guaranteed; the perpendicularity of the upper end face and the inner hole of the flange 1 can be guaranteed through the U-shaped fixing tool 3, and the perpendicularity of the inner hole of the flange 1 and the lower end face can be guaranteed through the L-shaped lower end face turning tool.
The flange 1 processed by the method of the invention is tested: three-coordinate detection process: firstly, collecting and detecting eight points on the outer diameter A of the flange 1 on a reference outer diameter, and taking a lower circle from each circle; and then eight points are collected on the upper part and the lower part of the B datum (lower bearing hole). And after the common axis line fitting is established between the reference cylinder A and the reference cylinder B. The results of examining 5 pieces of data are as follows:
| |
1 | 2 | 3 | 4 | 5 |
| Verticality of 0.03 | 0.016 | 0.018 | 0.0165 | 0.012 | 0.0135 |
| Flatness of upper flange | 0.0135 | 0.0168 | 0.0134 | 0.0086 | 0.0105 |
| Roundness degree | 0.0045 | 0.0078 | 0.0067 | 0.0049 | 0.0058 |
| Degree of cylindricity | 0.021 | 0.0229 | 0.0212 | 0.0158 | 0.0178 |
It can be seen that the flange 1 processed by the present invention has parameters that completely meet the requirements.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a promote motor flange hole machining precision and straightness's that hangs down processing method which characterized in that: the method comprises the following steps:
(a) processing a bolt hole (2) on the upper end surface of the flange (1) into a process screw hole to be connected with a fixing tool (3); the fixing tool (3) is of a U-shaped structure, the bottom surface of the fixing tool (3) is parallel to the plane, and two side surfaces of the fixing tool (3) are perpendicular to the bottom surface;
(c) finish turning the outer diameter, the end surface and the inner hole of the flange (1) by a lathe;
(d) after the inner hole is machined, a lower end face turning tool is used for finish turning the lower end face; the lower end face turning tool is of an L-shaped structure and comprises a vertical cutter bar (4) and a cutter (5) perpendicular to the cutter bar (4).
2. The machining method for improving machining precision and perpendicularity of the motor flange hole according to claim 1 is characterized in that: the flange (1) is a steel casting made of ZG25SiMn and has the hardness of HB 220-240.
3. The machining method for improving machining precision and perpendicularity of the motor flange hole according to claim 1 is characterized in that: the lathe is a numerical control vertical lathe, and the machining precision is 0.015mm/1000 mm.
4. The machining method for improving machining precision and perpendicularity of the motor flange hole according to claim 1 is characterized in that: the cutter (5) is a German SANDVIK stainless steel blade.
5. The machining method for improving machining precision and perpendicularity of the motor flange hole according to claim 1 is characterized in that: the steps (a) and (c) further comprise the following steps: (b) and (5) re-calibrating the outer diameter machined by the lathe, and ensuring that the end face runout is less than or equal to 0.05 mm.
6. The machining method for improving machining precision and perpendicularity of the motor flange hole according to claim 1 is characterized in that: the torsion when connecting the clamping flange is 60-70N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911360834.2A CN111112645A (en) | 2019-12-25 | 2019-12-25 | Machining method for improving machining precision and perpendicularity of motor flange hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911360834.2A CN111112645A (en) | 2019-12-25 | 2019-12-25 | Machining method for improving machining precision and perpendicularity of motor flange hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111112645A true CN111112645A (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911360834.2A Pending CN111112645A (en) | 2019-12-25 | 2019-12-25 | Machining method for improving machining precision and perpendicularity of motor flange hole |
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| Country | Link |
|---|---|
| CN (1) | CN111112645A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112276118A (en) * | 2020-09-30 | 2021-01-29 | 贵州安大航空锻造有限责任公司 | Planetary gear carrier cutting machining method |
| CN113118474A (en) * | 2021-03-31 | 2021-07-16 | 常州大谷液压器材有限公司 | Detection-free flange step hole machining method |
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| RU2355545C2 (en) * | 2007-07-04 | 2009-05-20 | Открытое акционерное общество "Авиадвигатель" | Manufacturing method of gear cluster |
| CN107182231B (en) * | 2011-12-20 | 2014-07-02 | 哈尔滨东安发动机（集团）有限公司 | 9310 steel and car gear working method |
| CN104191186A (en) * | 2014-08-01 | 2014-12-10 | 柳州市英利机械铸造有限责任公司 | Gearbox machining method |
| EP2873477A1 (en) * | 2013-11-14 | 2015-05-20 | Sandvik Tooling France | Cartridge for a grooving tool holder, corresponding grooving tool holder, kit and assembly thereof |
| CN105563058A (en) * | 2015-12-01 | 2016-05-11 | 陕西启源科技发展有限责任公司 | Gear box hollow shaft machining method |
| CN106695266A (en) * | 2017-01-23 | 2017-05-24 | 重庆蓝黛动力传动机械股份有限公司 | Machining method for automobile transmission disk gear |
| CN108817418A (en) * | 2018-06-14 | 2018-11-16 | 广东肇庆动力金属股份有限公司 | A kind of electric machine casing system of processing and the method using its processing electric machine casing |
-
2019
- 2019-12-25 CN CN201911360834.2A patent/CN111112645A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2355545C2 (en) * | 2007-07-04 | 2009-05-20 | Открытое акционерное общество "Авиадвигатель" | Manufacturing method of gear cluster |
| CN107182231B (en) * | 2011-12-20 | 2014-07-02 | 哈尔滨东安发动机（集团）有限公司 | 9310 steel and car gear working method |
| EP2873477A1 (en) * | 2013-11-14 | 2015-05-20 | Sandvik Tooling France | Cartridge for a grooving tool holder, corresponding grooving tool holder, kit and assembly thereof |
| CN104191186A (en) * | 2014-08-01 | 2014-12-10 | 柳州市英利机械铸造有限责任公司 | Gearbox machining method |
| CN105563058A (en) * | 2015-12-01 | 2016-05-11 | 陕西启源科技发展有限责任公司 | Gear box hollow shaft machining method |
| CN106695266A (en) * | 2017-01-23 | 2017-05-24 | 重庆蓝黛动力传动机械股份有限公司 | Machining method for automobile transmission disk gear |
| CN108817418A (en) * | 2018-06-14 | 2018-11-16 | 广东肇庆动力金属股份有限公司 | A kind of electric machine casing system of processing and the method using its processing electric machine casing |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112276118A (en) * | 2020-09-30 | 2021-01-29 | 贵州安大航空锻造有限责任公司 | Planetary gear carrier cutting machining method |
| CN113118474A (en) * | 2021-03-31 | 2021-07-16 | 常州大谷液压器材有限公司 | Detection-free flange step hole machining method |
| CN113118474B (en) * | 2021-03-31 | 2022-05-03 | 常州大谷液压器材有限公司 | Detection-free flange step hole machining method |
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Application publication date: 20200508 |
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