CN111037324B - Device and method for precisely milling and deburring metal harmonic oscillator - Google Patents
Device and method for precisely milling and deburring metal harmonic oscillator Download PDFInfo
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- CN111037324B CN111037324B CN202010003378.2A CN202010003378A CN111037324B CN 111037324 B CN111037324 B CN 111037324B CN 202010003378 A CN202010003378 A CN 202010003378A CN 111037324 B CN111037324 B CN 111037324B
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- harmonic oscillator
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- aligning
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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
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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
- B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
- B23P13/02—Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important
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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
- 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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Abstract
A device for precisely milling and deburring a metal harmonic oscillator comprises a fixed seat, an alignment seat and a gland; the fixing seat comprises a fixing seat mounting surface and a mounting handle used for connecting a machine tool spindle. The alignment seat comprises an alignment seat mounting surface, an alignment end surface, a radial alignment hole, a radial positioning hole and a harmonic oscillator positioning surface, wherein a plurality of axial screw mounting through holes are formed in the alignment seat mounting surface and correspond to axial connecting threaded holes in the fixing seat mounting surface; the internal thread of the gland is matched with the external thread of the alignment seat, and the pressing end face compresses the end face of the metal harmonic oscillator. The device and the method can ensure the precision machining and chamfering precision of the harmonic oscillator and improve the product quality.
Description
Technical Field
The invention belongs to the technical field of precision machining of metal harmonic oscillators, and particularly relates to a device and a method for precision milling and deburring of a metal harmonic oscillator.
Background
The metal resonance gyroscope is a miniaturized high-precision gyroscope, and the harmonic oscillator is a core part of the gyroscope. As shown in fig. 1: the metal harmonic oscillator is made of a high-hardness material and belongs to a complete axisymmetric part, in order to improve the precision of the resonance gyroscope, the requirement on the coaxiality of the excircle, the inner hole and the reference circle of the uniformly distributed eight through holes of the harmonic oscillator is high during processing, meanwhile, the requirement on the reference precision between the eight through holes and the eight blind holes is high, and the requirements on the blind holes and the chamfer angles of the through holes are uniform. At present, the machining of an inner hole and an outer circle is finished by adopting a turning method, the machining of eight through holes, eight blind holes and an outer side chamfer is finished by adopting a milling method, and the machining of an inner side chamfer is finished by adopting a manual method. However, there is a risk of part deformation due to the large margins that are removed during the subsequent processing of the eight through holes and blind holes. Meanwhile, the problem of uneven chamfering can exist when burrs on the inner sides of the eight through holes are manually removed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a device and a method for precisely milling and deburring a metal harmonic oscillator.
In order to achieve the purpose, the invention provides the following technical scheme: a device for precisely milling and deburring a metal harmonic oscillator comprises a fixed seat, an alignment seat and a gland; the fixing seat comprises a fixing seat mounting surface and a mounting handle used for being connected with a machine tool spindle, the mounting handle is arranged on the left end mounting surface of the fixing seat mounting surface, and a plurality of axial connecting threaded holes are formed in the fixing seat mounting surface. The alignment seat comprises an alignment seat mounting surface, an alignment end surface, a radial alignment hole, a radial positioning hole and a harmonic oscillator positioning surface, wherein a plurality of axial screw mounting through holes are formed in the alignment seat mounting surface and correspond to axial connecting threaded holes in the fixing seat mounting surface; the internal thread of the gland is matched with the external thread of the alignment seat, and the pressing end face compresses the end face of the metal harmonic oscillator.
The method for utilizing the device for precisely milling and deburring the metal harmonic oscillator comprises the following steps of:
firstly, a process handle is installed and clamped, the machining of the excircle and the inner hole of the metal harmonic oscillator is finished by adopting a turning and milling combined machining scheme, 0.2 allowance is reserved for uniformly distributing eight through holes, the inner sides of the eight through holes are not chamfered at the moment, a reamer is adopted to machine the inner hole, and the process handle is cut off after the machining is finished, and the parallelism between the process handle and the bottom surface is ensured by flattening the cut surface;
secondly, mounting the fixed seat on a numerical control milling center, clamping the mounting handle by using a three-jaw chuck, and aligning the mounting surface of the fixed seat to ensure the perpendicularity of the mounting surface of the fixed seat with a machine tool spindle and a rotary table;
thirdly, a screw penetrates through the mounting through hole of the mounting surface of the aligning seat and the axial connecting threaded hole on the mounting surface of the fixing seat to mount the aligning seat on the fixing seat, then the screw is fastened after the radial aligning hole is aligned by adopting an inductance meter, the end surface of the aligning seat is aligned, and the zero position of the tool in the circumferential direction is determined;
mounting the metal harmonic oscillator on the harmonic oscillator positioning surface of the alignment seat, ensuring that the corresponding end surface of the harmonic oscillator is tightly attached to the harmonic oscillator positioning surface of the alignment seat, and aligning the corresponding hole of the metal harmonic oscillator with the radial positioning hole of the alignment seat by adopting a positioning pin;
fifthly, the positioning pin is removed after the metal harmonic oscillator is compressed through the compression end face of the gland, then eight through holes and eight blind holes are respectively processed through a boring cutter and a milling cutter, then the outer side and the inner side of the eight holes are respectively chamfered through a chamfering cutter in the forward direction and the reverse direction, and the processing of the rest metal harmonic oscillator is sequentially completed through the fourth step and the fifth step.
The flatness of a right end mounting surface of the fixing seat mounting surface is less than or equal to 0.002mm, and a clearance surface is machined in the middle part of the fixing seat mounting surface.
And three axial connecting threaded holes are formed in the mounting surface of the fixed seat.
Three axial screw mounting through holes are formed in the alignment seat mounting surface.
Compared with the prior art, the invention has the following beneficial effects:
1. the device used by the invention can obviously improve the processing efficiency and the processing precision of the metal harmonic oscillator. The flatness of the mounting surface at the right end of the mounting surface is not more than 0.002mm, and a blank cutter surface is processed at the middle part to ensure the flatness requirement of the mounting surface; the alignment seat is a part for connecting the fixed seat and the metal harmonic oscillator, wherein the alignment seat is connected with the fixed seat through an axial screw mounting through hole by an axial mounting screw, so that the mounting surface of the alignment seat is ensured to be attached to the mounting surface of the fixed seat; the radial alignment hole is used for ensuring that the rotation center of the alignment seat is concentric with the main shaft, and the alignment end surface is used for ensuring the accurate positioning of the circumferential direction of the alignment seat and the machine tool; the harmonic oscillator positioning surface is used for mounting a metal harmonic oscillator, and the radial positioning hole is used for ensuring accurate positioning between the harmonic oscillator and the alignment seat; the mounting external thread is used for being connected with the gland to ensure the fastening connection between the metal harmonic oscillator and the alignment seat. The gland plays a role in compressing the metal harmonic oscillator.
2. The method comprises the steps of firstly, ensuring the coaxiality consistency of the outer circle and the inner hole of the metal harmonic oscillator, simultaneously, machining the inner hole by adopting a reamer in order to ensure the size consistency of the eight through holes, cutting off a process handle after finishing the machining, and ensuring the parallelism between a smooth cutting surface and a bottom surface. Ensuring the verticality of the mounting surface of the fixed seat, the main shaft of the machine tool and the turntable; processing the radial alignment hole, the alignment end face, the radial positioning hole and the harmonic oscillator positioning surface in one-step clamping, so that the coaxiality between the radial positioning hole of the alignment seat and a rotary table of a machine tool and the accurate positioning in the circumferential direction of the machine tool can be ensured; mounting the metal harmonic oscillator on the harmonic oscillator positioning surface of the alignment seat, ensuring that the corresponding end surface of the harmonic oscillator is attached to the harmonic oscillator positioning surface of the alignment seat, and aligning the corresponding hole of the metal harmonic oscillator with the radial positioning hole of the alignment seat by adopting a positioning pin; and fifthly, because the eight through holes and the chamfer are respectively processed in one-time clamping, the consistency of the chamfer of the part can be ensured.
3. After burrs on the inner sides of the eight through holes are removed by using the milling scheme, the burr removing effect can be ensured, the chamfer consistency can be ensured, and the design and use requirements are met.
Drawings
Fig. 1 is a schematic perspective view of a metal resonator;
FIG. 2 is a schematic structural view of a fixing base;
FIG. 3 is a schematic structural view of an alignment seat;
FIG. 4 is a schematic structural view of the gland;
FIG. 5 is a schematic view of the alignment seat and the fixing seat;
fig. 6 is a schematic view of a step of mounting the metal harmonic oscillator (a);
fig. 7 is a schematic view of a fifth step of mounting the metal harmonic oscillator;
fig. 8 is a schematic view of the metal resonator after being installed;
fig. 9 is a schematic diagram of chamfering a metal resonator.
In the figure: 1-axial connecting threaded hole, 2-fixing seat mounting surface, 3-mounting handle, 4-radial alignment hole, 5-radial positioning hole, 6-harmonic oscillator positioning surface, 7-external thread, 8-alignment end surface, 9-alignment seat mounting surface, 10-axial screw mounting through hole, 11-gland internal thread and 12-gland pressing end surface.
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.
Referring to fig. 2-5, the present invention provides the following technical solutions: a device for precisely milling and deburring a metal harmonic oscillator comprises a fixed seat, an aligning seat and a gland.
The fixing seat comprises a fixing seat mounting surface and a mounting handle used for being connected with a machine tool spindle, the mounting handle is arranged on the left end mounting surface of the fixing seat mounting surface, and three axial connecting threaded holes are formed in the fixing seat mounting surface. In order to ensure the radial alignment precision, the flatness of the right end mounting surface is not more than 0.002mm, and a hollow cutter surface is processed at the middle part to ensure the flatness requirement of the mounting surface.
The alignment seat comprises an alignment seat mounting surface, an alignment end surface, a radial alignment excircle, a radial positioning hole and a harmonic oscillator positioning surface, the alignment seat comprises an alignment seat mounting surface, an alignment end surface, a radial alignment hole, a radial positioning hole and a harmonic oscillator positioning surface, a plurality of axial screw mounting through holes are formed in the alignment seat mounting surface and correspond to axial connecting threaded holes in the fixing seat mounting surface, the alignment end surface is formed in the middle of the right end mounting surface of the alignment seat mounting surface, the radial alignment hole is formed in the center of the alignment end surface, external threads are mounted outside the radial alignment hole, and the harmonic oscillator positioning surface is formed in the radial alignment hole and uniformly provided with the radial positioning holes. The alignment seat is a part for connecting the fixed seat and the metal harmonic oscillator, wherein the alignment seat is connected with the fixed seat through an axial screw mounting through hole by an axial mounting screw, so that the mounting surface of the alignment seat is ensured to be attached to the mounting surface of the fixed seat; the radial alignment hole is used for ensuring that the rotation center of the alignment seat is concentric with the main shaft, and the alignment end surface is used for ensuring the accurate positioning of the circumferential direction of the alignment seat and the machine tool; the harmonic oscillator positioning surface is used for mounting a metal harmonic oscillator, and the radial positioning hole is used for ensuring accurate positioning between the harmonic oscillator and the alignment seat; the mounting external thread is used for being connected with the gland to ensure the fastening connection between the metal harmonic oscillator and the alignment seat.
The internal thread of the gland is matched with the external thread of the alignment seat, and the pressing end face compresses the end face of the metal harmonic oscillator.
The machining method of the device for precisely milling and deburring the metal harmonic oscillator comprises the following steps of:
firstly, a process handle is installed and clamped, the machining of the excircle and the inner hole of the metal harmonic oscillator is completed by adopting a turning and milling composite machining scheme, 0.2 allowance is reserved for the eight uniformly distributed through holes, and the inner sides of the eight through holes are not chamfered at the moment. Since the above dimensions are processed in one-time chucking, the above coaxiality can be ensured. In order to ensure the size consistency of the eight through holes, the inner holes are processed by adopting a reamer. And cutting off the technological handle after the processing is finished, and flattening the cut surface to ensure the parallelism with the bottom surface.
Secondly, the fixed seat is arranged on a numerical control milling center, a three-jaw chuck is adopted to clamp the mounting handle, the mounting surface of the fixed seat is aligned, and the perpendicularity of the mounting surface of the fixed seat, a machine tool spindle and a rotary table is guaranteed.
Thirdly, three screws penetrate through three mounting through holes in the mounting surface of the aligning seat and three axial connecting threaded holes in the mounting surface of the fixing seat to mount the aligning seat on the fixing seat, then the screws are fastened after the inductance meter is used for aligning the radial aligning holes, the end surface of the aligning seat is aligned, and the zero position of the tool in the circumferential direction is determined.
At the moment, the radial alignment hole, the alignment end face, the radial positioning hole and the harmonic oscillator positioning face are machined in one-step clamping, so that the coaxiality between the radial positioning hole of the tool and the rotary table of the machine tool and the accurate positioning in the circumferential direction of the machine tool can be guaranteed, and the process is shown in figure 5.
And fourthly, mounting the metal harmonic oscillator on the harmonic oscillator positioning surface of the aligning seat, ensuring that the corresponding end surface of the harmonic oscillator is attached to the harmonic oscillator positioning surface of the aligning seat, and aligning the corresponding hole of the metal harmonic oscillator with the radial positioning hole of the aligning seat by adopting a positioning pin, wherein the eight through holes of the metal harmonic oscillator and the eight radial positioning holes of the aligning seat are machined by adopting the same specification reamer by adopting the turning and milling composite machining center, and the size and the center distance are consistent, so that the position relation between the eight through holes of the harmonic oscillator and a machine tool can be ensured, as shown in fig. 6.
Fifthly, the gland presses the part tightly through the screw thread, and then the positioning pin is removed, as shown in figure 7. As shown in fig. 8, then, a boring cutter and a milling cutter are used to process eight through holes and eight blind holes respectively to meet the drawing requirements, and the indexing accuracy is ensured. And then chamfering the outer side and the inner side of the eight holes respectively by adopting special chamfering tools (forward and reverse). As shown in FIG. 9, the eight holes and the chamfer angles are respectively processed in one-time clamping, so that the consistency of the chamfer angles of the parts can be ensured. And (5) after the machining is finished, taking down the part, and repeating the steps 4 and 5 to finish the machining of the rest parts in sequence.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that 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 (4)
1. A method for precisely milling and deburring a metal harmonic oscillator is characterized by comprising the following steps: the method comprises the following steps:
manufacturing a device for precisely milling and deburring a metal harmonic oscillator, wherein the device comprises a fixed seat, an alignment seat and a gland; the harmonic oscillator positioning device comprises a fixed seat, a harmonic oscillator positioning surface, a centering seat, a harmonic oscillator positioning surface, a harmonic oscillator positioning hole and a harmonic oscillator positioning hole, wherein the fixed seat comprises a fixed seat mounting surface and a mounting handle for connecting a machine tool spindle, the mounting handle is arranged at the left end mounting surface of the fixed seat mounting surface, a plurality of axial connecting threaded holes are formed in the fixed seat mounting surface, the aligning seat comprises an aligning seat mounting surface, an aligning end surface, a radial aligning hole, the harmonic oscillator positioning hole and the harmonic oscillator positioning hole; the internal thread of the gland is matched with the external thread of the alignment seat, and the pressing end face presses the end face of the metal harmonic oscillator;
secondly, mounting and clamping the process handle, finishing the processing of the excircle and the inner hole of the metal harmonic oscillator by adopting a turning and milling combined processing scheme, uniformly distributing eight through holes and reserving 0.2 allowance, not chamfering the inner sides of the eight through holes at the moment, processing the inner hole by adopting a reamer, cutting off the process handle after finishing the processing, and flattening the cut surface to ensure the parallelism with the bottom surface;
thirdly, the fixing seat is arranged on a numerical control milling center, a three-jaw chuck is adopted to clamp the mounting handle, and the mounting surface of the fixing seat is aligned, so that the perpendicularity of the mounting surface of the fixing seat, a machine tool spindle and a rotary table is ensured;
penetrating a screw through the mounting through hole on the mounting surface of the aligning seat and the axial connecting threaded hole on the mounting surface of the fixed seat to mount the aligning seat on the fixed seat, then fastening the screw after aligning the radial aligning hole by adopting an inductance meter, aligning the aligning end surface of the aligning seat, and determining the zero position of the tool in the circumferential direction;
mounting the metal harmonic oscillator on the harmonic oscillator positioning surface of the aligning seat to ensure that the corresponding end surface of the harmonic oscillator is tightly attached to the harmonic oscillator positioning surface of the aligning seat, and aligning the corresponding hole of the metal harmonic oscillator with the radial positioning hole of the aligning seat by using a positioning pin;
sixthly, removing the positioning pin after the metal harmonic oscillator is compressed through the compression end face of the gland, then respectively processing eight through holes and eight blind holes by using a boring cutter and a milling cutter, then respectively processing chamfers on the outer sides and the inner sides of the eight holes in the forward direction and the reverse direction by using a chamfer cutter, and repeating the fourth step and the fifth step to sequentially complete the processing of the rest metal harmonic oscillator.
2. The method for precisely milling and deburring the metal harmonic oscillator according to claim 1, wherein: the flatness of a right end mounting surface of the fixing seat mounting surface is less than or equal to 0.002mm, and a clearance surface is machined in the middle part of the fixing seat mounting surface.
3. The method for precisely milling and deburring the metal harmonic oscillator according to claim 1, wherein: and three axial connecting threaded holes are formed in the mounting surface of the fixed seat.
4. The method for precisely milling and deburring the metal harmonic oscillator according to claim 1, wherein: three axial screw mounting through holes are formed in the alignment seat mounting surface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010003378.2A CN111037324B (en) | 2020-01-03 | 2020-01-03 | Device and method for precisely milling and deburring metal harmonic oscillator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010003378.2A CN111037324B (en) | 2020-01-03 | 2020-01-03 | Device and method for precisely milling and deburring metal harmonic oscillator |
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| CN111037324A CN111037324A (en) | 2020-04-21 |
| CN111037324B true CN111037324B (en) | 2021-09-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201316913Y (en) * | 2008-12-15 | 2009-09-30 | 宁夏三一西北骏马电机制造股份有限公司 | Special-purpose clamp positioner for processing long cylinder for lathe |
| CN201685127U (en) * | 2010-04-26 | 2010-12-29 | 天津赛瑞机器设备有限公司 | Split tooling shaft used for machining disk roller wheel |
| CN102328216A (en) * | 2011-09-01 | 2012-01-25 | 中国航空工业第六一八研究所 | Fixture for excircle finish turning and fixture processing method |
| CN202462066U (en) * | 2012-01-05 | 2012-10-03 | 天津市腾元石油机械有限公司 | Fixture for machining thin-wall and multi-blade rotor |
| CN103921154A (en) * | 2014-05-06 | 2014-07-16 | 哈尔滨建成集团有限公司 | Milling tool for milling circumferential key groove in output shaft |
| CN104400474B (en) * | 2014-10-16 | 2016-08-24 | 中国船舶重工集团公司第七0七研究所 | High accuracy gyroscope moving coil framework processing technique based on rotary ultrasonic and special tooling |
| CN208575540U (en) * | 2018-06-28 | 2019-03-05 | 中国船舶重工集团公司第七0七研究所 | A kind of device having both axial fast precise, radial direction centering and clamping function |
| CN108789858B (en) * | 2018-06-29 | 2020-12-15 | 中国船舶重工集团公司第七0七研究所 | High-precision hard and brittle material coil framework turning and milling composite processing technology and tool |
| CN209380259U (en) * | 2018-12-04 | 2019-09-13 | 中国船舶重工集团公司第七0七研究所 | A kind of thin-walled parts precision turning-milling complex processing special process equipment |
| CN109605052B (en) * | 2018-12-04 | 2020-09-01 | 中国船舶重工集团公司第七0七研究所 | High-precision microcrystalline glass motor stator turning and grinding combined machining process and special tool |
| CN110480378B (en) * | 2019-08-27 | 2024-05-17 | 南京中船绿洲机器有限公司 | Machining clamping device and clamping method for thin-wall frame |
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