CN101508080A - Planet mechanism for producing hole, screw thread and processing machine tool - Google Patents
Planet mechanism for producing hole, screw thread and processing machine tool Download PDFInfo
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- CN101508080A CN101508080A CNA2009100810544A CN200910081054A CN101508080A CN 101508080 A CN101508080 A CN 101508080A CN A2009100810544 A CNA2009100810544 A CN A2009100810544A CN 200910081054 A CN200910081054 A CN 200910081054A CN 101508080 A CN101508080 A CN 101508080A
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- screw thread
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Abstract
The invention discloses a planetary mechanism for manufacturing holes and threads, as well as a processing machine tool. The planetary mechanism comprises an axial motion component, a rotary motion component, and an eccentric output shaft component, wherein the rotary motion component acts on the eccentric output shaft component, and makes circumferential rotary motion at an output end of the eccentric output shaft component; the axial motion component and the rotary motion component coact on the eccentric output shaft component, and make axial linear motion at the output end of the eccentric output shaft component; and the linear motion and the rotary motion are synthesized into spiral motion and synthesized with self rotary motion of the output shaft to form a planetary motion track. The planetary mechanism can realize ideal spiral motion of hole grinding and milling and thread milling, improve the processing precision and efficiency of holes and threads, simultaneously avoid repeated partial wear of the machine tool in small range, and effectively prolong the service life of the machine tool.
Description
Technical field
The present invention relates to a kind of mechanical processing machine part of appliance, relate in particular to a kind of planetary mechanism and machining tool that is used for drilling, system screw thread.
Background technology
In the prior art, the screw of cutter is that three rectilinear motions by machining tool obtain by moving interpolation when grinding out, hole milling, thread milling.
There is following shortcoming at least in above-mentioned prior art:
Because the influence of the secondary interpolation precision of the inertia of platen and rectilinear motion, the screw that forms not is to be the ideal spiral line, influence the precision of hole and screw thread, working (machining) efficiency is lower, simultaneously, repeatability spiral interpolation among a small circle very easily causes the concentrated wear of lathe rectilinear motion pair, influences the service life of lathe.
Summary of the invention
The purpose of this invention is to provide a kind of machining accuracy height, efficient height, and can prolong the planetary mechanism and the machining tool that are used for drilling, system screw thread in lathe life-span.
The objective of the invention is to be achieved through the following technical solutions:
The planetary mechanism that is used for drilling, system screw thread of the present invention, comprise axial motion component, the assembly that rotatablely moves, eccentric output shaft assembly, described axial motion component and rotatablely move the assembly acting in conjunction in eccentric output shaft assembly forms axial rectilinear motion at the output of eccentric output shaft assembly; The described assembly that rotatablely moves acts on eccentric output shaft assembly, forms circumferential rotatablely moving at the output of eccentric output shaft assembly.
Machining tool of the present invention comprises machine tool chief axis, is connected with the above-mentioned planetary mechanism that is used for drilling, system screw thread on the described machine tool chief axis.
As seen from the above technical solution provided by the invention, planetary mechanism and the machining tool that is used for drilling, system screw thread of the present invention, because the axial motion component and the assembly that rotatablely moves act on eccentric output shaft assembly respectively, and form axial rectilinear motion and circumferential rotatablely moving at the output of eccentric output shaft assembly respectively, the two synthesizes screw, rotatablely moving of screw and output shaft self is synthetic, forms planetary motion track.
Can realize the ideal spiral motion of grinding out, hole milling, thread milling, improve the machining accuracy and the working (machining) efficiency of hole, screw thread, simultaneously, avoid the lathe concentrated wear of interior repeatability among a small circle, can effectively prolong the service life of lathe.
Description of drawings
Fig. 1 is used for the structural representation of the planetary mechanism of drilling, system screw thread for the present invention;
Fig. 2 is that the A-A of Fig. 1 is to cutaway view;
Fig. 3 a, Fig. 3 b are respectively BB when inner eccentric shaft and outer eccentric shaft are adjusted to diverse location among Fig. 1 to cutaway view.
The specific embodiment
The planetary mechanism that is used for drilling, system screw thread of the present invention, its preferable specific embodiment is, comprise axial motion component, the assembly that rotatablely moves, eccentric output shaft assembly, axial motion component and rotatablely move the assembly acting in conjunction in eccentric output shaft assembly forms axial rectilinear motion at the output of eccentric output shaft assembly; The assembly that rotatablely moves acts on eccentric output shaft assembly, forms circumferential rotatablely moving at the output of eccentric output shaft assembly.
Axial rectilinear motion and circumferential rotatablely moving synthesize screw, and screw is synthetic with rotatablely moving of output shaft self again, form planetary motion track.
Concrete eccentric output shaft assembly can comprise main shaft, and the outside of main shaft is with eccentric shaft, also main shaft directly can be processed into eccentric shaft.
Eccentric shaft can comprise outer eccentric shaft, inner eccentric shaft, and inner eccentric shaft is fixedlyed connected with main shaft; Outer eccentric shaft is enclosed within the outside of inner eccentric shaft, and can relatively rotate between the two, and is provided with hold-down screw.Can regulate the offset of whole eccentric output shaft assembly by regulating outer eccentric shaft and the inner eccentric shaft relative position between the two, adjust and then fix by hold-down screw.
Axial motion component can comprise intermeshing hollow screw and nut, and hollow screw is fixed on the outside of eccentric output shaft assembly, and nut is by the rotation of the first annular servo motor-driven.
The first annular servo motor comprises rotor, stator, and rotor is fixedlyed connected with nut, and stator is connected with the housing of this planetary mechanism.Specifically can comprise rotor coil, Rotor carriage, stator coil, stator support frame, bearing one, bearing two, bearing (ball) cover, Rotor carriage is fixedlyed connected with nut, rotor coil is fixedlyed connected the formation rotor with Rotor carriage, stator coil is fixedlyed connected the formation stator with the stator support frame, Rotor carriage and stator support frame cooperate installation with the inner ring and the outer ring of bearing one, bearing two respectively, bearing (ball) cover is installed on the stator support frame bearing two is played the restriction positioning action, and the stator support frame is connected with the upper shell of this planetary mechanism.
The assembly that rotatablely moves can comprise intermeshing hollow splined shaft and key mother, and the hollow splined shaft is fixed on the outside of eccentric output shaft assembly, and key is female by the rotation of the second annular servo motor-driven.
Equally, the second annular servo motor comprises rotor, stator, and rotor is fixedlyed connected with the key mother, and stator is connected with the housing of this planetary mechanism.Specifically can comprise rotor coil, Rotor carriage, stator coil, stator support frame, bearing three, bearing four, bearing (ball) cover, rotor is fixedlyed connected with the key mother, rotor coil is fixedlyed connected the formation rotor with Rotor carriage, stator coil is fixedlyed connected the formation stator with the stator support frame, Rotor carriage and stator support frame cooperate installation with the inner ring and the outer ring of bearing three, bearing four respectively, bearing (ball) cover is installed on the stator support frame bearing is risen from all around to the restriction positioning action, and the stator support frame is connected with the housing of this planetary mechanism.
Machining tool of the present invention, its preferable specific embodiment be, comprises machine tool chief axis, is connected with the above-mentioned planetary mechanism that is used for drilling, system screw thread on the machine tool chief axis.
Below by specific embodiment, and the present invention is described in further detail in conjunction with the accompanying drawings.
The planetary mechanism that is used for drilling, system screw thread of the present invention mainly is made up of housing, axial motion component, the assembly that rotatablely moves, eccentric output shaft assembly.
As Fig. 1, shown in Figure 2, housing comprises upper shell 1, lower house 18, the upper end of upper shell 1 can be connected with the main shaft of lathe, the stator support frame 19 of the lower end and the second annular servo motor, lower house 18 is connected and fixed by screw, axial motion component is installed in inside at upper shell 1 and lower house 18, assembly rotatablely moves, axial motion component and rotatablely move the assembly acting in conjunction in eccentric output shaft assembly, output at main shaft 14 forms the adjustable screw of parameter, rotatablely moving of screw and main shaft 14 self is synthetic, forms planetary motion track.
Axial motion component comprises stator support frame 22, stator coil 21, Rotor carriage 3, rotor coil 4, bearing 1, bearing 2 23, bearing (ball) cover 24, the nut 2 of ball screw kinematic pair, the hollow screw 6 of the first annular servo motor.The stator support frame 22 of the first annular servo motor is fixed on by screw on the installation step of upper shell 1 inside, and stator coil 21 is fixed on the inside of stator support frame 22 by screw; Rotor coil 4 is installed in outside at the Rotor carriage 3 of the first annular servo motor; Stator support frame 22 and Rotor carriage 3 cooperate by bearing 1, bearing 2 23 to be installed, and bearing (ball) cover 24 is installed in the position of restriction bearing 2 23 on the stator support frame 22; Nut 2 is installed in the middle of Rotor carriage 3, and nut 2 and inner hollow screw 6 routing motions pass through interference fit setting-up eccentricity output shaft assembly in the centre of hollow screw 6.
The assembly that rotatablely moves comprises stator support frame 19, stator coil 8, Rotor carriage 7, rotor coil 9, bearing 3 20, bearing 4 17, bearing (ball) cover 10, the key mother 11 of ball spline pair, the hollow splined shaft 12 of the second annular servo motor.The stator support frame 19 of the second annular servo motor is fixed on the centre that upper shell 1 and lower house 18 install and fix face by screw; Stator coil 8 is fixed on the inside of stator support frame 19 by screw; Rotor coil 9 is installed in outside at the Rotor carriage 7 of the second annular servo motor; Stator support frame 19 and Rotor carriage 7 cooperate by bearing 3 20, bearing 4 17 to be installed, and bearing (ball) cover 10 is installed in the position of restriction bearing 4 17 on the stator support frame 19; Fitting key mother 11 in the middle of the Rotor carriage 7 of the second annular servo motor, key female 11 and hollow splined shaft 12 routing motions pass through interference fit setting-up eccentricity output shaft assembly in the centre of hollow splined shaft 12.
Eccentric output shaft assembly comprises outer eccentric shaft 16, inner eccentric shaft 13, main shaft 14, offset hold-down screw 15.Outer eccentric shaft 16 is installed in the hollow screw 6 of ball screw kinematic pair, hollow splined shaft 12 centres of ball spline pair by interference fit; The inner eccentric shafts 13 of hollows are installed in the middle of the outer eccentric shaft 16 of hollow, and both can freely rotate mutually, in use adjust the mutual alignment as required after, position by offset hold-down screw 15; In the middle of the inner eccentric shaft 13 of hollow, main shaft 14 is installed by interference fit.
Use when of the present invention, can directly this mechanism be installed on the machine tool chief axis, only need utilize the motion of lathe that machining feature is positioned and get final product, other motion in the process is all finished by this mechanism, by replacing, the different different processing mode of cutter realization of clamping.
In the mechanism of the present invention, in the eccentric output shaft assembly spiral movement locus of spindle end by axially-movable, rotatablely move and offset that the eccentric shaft assembly exists determines jointly.After the axial linear movement speed of main shaft is coupled by the rotary speed of the rotary speed of the first annular servo motor and the second annular servo motor in the eccentric output shaft assembly, be converted to by the ball screw kinematic pair, promptly the point-to-point speed of eccentric shaft assembly equals the rotary speed ω of the first annular servo motor
1Rotary speed ω with the second annular servo motor
2Difference and the product of hollow screw 6 helical pitch P again divided by 2 π, promptly
Shown in Fig. 3 a, Fig. 3 b, the offset of eccentric output shaft assembly determined by the relative angle of outer eccentric shaft 16 and inner eccentric shaft 13, when relative angle when 0 ° and 180 ° changes, the eccentric amount e of eccentric output shaft is from e
1+ e
2To e
1-e
2Change continuously, wherein e
1Be the offset of outer eccentric shaft 16 inside and outside circles, e
2Offset for inner eccentric shaft 13 inside and outside circles.
The present invention is by adjusting each parameter, can realize the parametrization adjustment of spiral movement locus, avoided forming the shortcoming of spiral movement locus by three rectilinear motion interpolations of lathe, machining accuracy and the working (machining) efficiency of hole, screw thread have been improved, also having avoided simultaneously lathe rectilinear motion synetion is to carry out the concentrated wear that repeatability spiral interpolation among a small circle causes, and prolongs the service life of lathe.
The present invention is mainly used in the two eccentric planet mechanism of grinding out, hole milling, thread milling, belongs to the mechanical processing machine part of appliance.Form with machine tool component can be installed on the main shaft of Digit Control Machine Tool, the parameter of the offset adjustment campaign of the axially-movable by mechanism, circumferential movement, eccentric output shaft, the synthesized main shaft output that rotatablely moves of main shaft can be regulated the planet screw, drives cutter and carries out grinding out, hole milling, thread milling processing.
The circle grinding abrasive disk can be realized the grinding in hole in the main shaft output of planetary mechanism is installed, can realize the high speed and precision grinding in hole by the each stock removal of the double eccentric mechanism adjustment of mechanism, improve the precision in hole, especially at the grinding in hole on difficult-to-machine material, the composite.At the main shaft output of planetary mechanism plain cutter is installed and can be realized the milling in hole, motion mode is identical with grinding, realizes the size Control in cutter compensation and aperture by adjusting offset.At the output of main shaft screw cutter is installed and is realized thread milling, especially process at the minor thread of difficult-to-machine material.
The above; only for the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (8)
1, a kind of planetary mechanism that is used for drilling, system screw thread, it is characterized in that, comprise axial motion component, the assembly that rotatablely moves, eccentric output shaft assembly, described axial motion component and rotatablely move the assembly acting in conjunction in eccentric output shaft assembly forms axial rectilinear motion at the output of eccentric output shaft assembly; The described assembly that rotatablely moves acts on eccentric output shaft assembly, forms circumferential rotatablely moving at the output of eccentric output shaft assembly.
2, the planetary mechanism that is used for drilling, system screw thread according to claim 1 is characterized in that described eccentric output shaft assembly comprises main shaft, and the outside of described main shaft is with eccentric shaft.
3, the planetary mechanism that is used for drilling, system screw thread according to claim 2 is characterized in that described eccentric shaft comprises outer eccentric shaft, inner eccentric shaft, and described inner eccentric shaft is fixedlyed connected with described main shaft;
Described outer eccentric shaft is enclosed within the outside of described inner eccentric shaft, and can relatively rotate between the two, and is provided with hold-down screw.
4, according to claim 1, the 2 or 3 described planetary mechanisms that are used for drilling, system screw thread, it is characterized in that, described axial motion component comprises intermeshing hollow screw and nut, described hollow screw is fixed on the outside of described eccentric output shaft assembly, and described nut is by the rotation of the first annular servo motor-driven.
5, the planetary mechanism that is used for drilling, system screw thread according to claim 4 is characterized in that the described first annular servo motor comprises rotor, stator, and described rotor is fixedlyed connected with described nut, and described stator is connected with the housing of this planetary mechanism.
6, according to claim 1, the 2 or 3 described planetary mechanisms that are used for drilling, system screw thread, it is characterized in that, the described assembly that rotatablely moves comprises intermeshing hollow splined shaft and key mother, described hollow splined shaft is fixed on the outside of described eccentric output shaft assembly, and described key is female by the rotation of the second annular servo motor-driven.
7, the planetary mechanism that is used for drilling, system screw thread according to claim 6 is characterized in that the described second annular servo motor comprises rotor, stator, and described rotor is fixedlyed connected with described key mother, and described stator is connected with the housing of this planetary mechanism.
8, a kind of machining tool comprises machine tool chief axis, it is characterized in that, is connected with each described planetary mechanism that is used for drilling, system screw thread of claim 1 to 7 on the described machine tool chief axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100810544A CN101508080B (en) | 2009-03-31 | 2009-03-31 | Planet mechanism for producing hole, screw thread and processing machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100810544A CN101508080B (en) | 2009-03-31 | 2009-03-31 | Planet mechanism for producing hole, screw thread and processing machine tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101508080A true CN101508080A (en) | 2009-08-19 |
| CN101508080B CN101508080B (en) | 2011-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100810544A Expired - Fee Related CN101508080B (en) | 2009-03-31 | 2009-03-31 | Planet mechanism for producing hole, screw thread and processing machine tool |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786180A (en) * | 2010-03-31 | 2010-07-28 | 南京航空航天大学 | Spiral hole milling device and method |
| CN102430820A (en) * | 2010-09-29 | 2012-05-02 | 沈阳黎明航空发动机(集团)有限责任公司 | External thread numerical control milling method |
| CN107932286A (en) * | 2017-11-02 | 2018-04-20 | 南方科技大学 | Inclined spiral machining unit, machining equipment and machining method |
| CN108356622A (en) * | 2018-02-22 | 2018-08-03 | 山东大学 | A kind of reducing inner hole grinding device being installed on milling machine spindle and processing method |
| CN113843459A (en) * | 2021-10-25 | 2021-12-28 | 湖南工学院 | Device for efficient and precise ultrasonic grinding machining of ore-raising pipe threads and using method thereof |
-
2009
- 2009-03-31 CN CN2009100810544A patent/CN101508080B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786180A (en) * | 2010-03-31 | 2010-07-28 | 南京航空航天大学 | Spiral hole milling device and method |
| CN102430820A (en) * | 2010-09-29 | 2012-05-02 | 沈阳黎明航空发动机(集团)有限责任公司 | External thread numerical control milling method |
| CN107932286A (en) * | 2017-11-02 | 2018-04-20 | 南方科技大学 | Inclined spiral machining unit, machining equipment and machining method |
| CN107932286B (en) * | 2017-11-02 | 2024-04-30 | 南方科技大学 | Oblique spiral processing unit, processing equipment and processing method |
| CN108356622A (en) * | 2018-02-22 | 2018-08-03 | 山东大学 | A kind of reducing inner hole grinding device being installed on milling machine spindle and processing method |
| CN113843459A (en) * | 2021-10-25 | 2021-12-28 | 湖南工学院 | Device for efficient and precise ultrasonic grinding machining of ore-raising pipe threads and using method thereof |
| CN113843459B (en) * | 2021-10-25 | 2023-10-20 | 湖南工学院 | Device for efficient and precise ultrasonic grinding machining of threads of ore lifting pipe and application method of device |
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| Publication number | Publication date |
|---|---|
| CN101508080B (en) | 2011-01-05 |
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Granted publication date: 20110105 Termination date: 20130331 |