CN102371403A - Machining method of worm by milling instead of turning and implementation device thereof - Google Patents

Machining method of worm by milling instead of turning and implementation device thereof Download PDF

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Publication number
CN102371403A
CN102371403A CN201110207604XA CN201110207604A CN102371403A CN 102371403 A CN102371403 A CN 102371403A CN 201110207604X A CN201110207604X A CN 201110207604XA CN 201110207604 A CN201110207604 A CN 201110207604A CN 102371403 A CN102371403 A CN 102371403A
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China
Prior art keywords
worm screw
anchor clamps
worm
central shaft
dimension
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Pending
Application number
CN201110207604XA
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Chinese (zh)
Inventor
刘希望
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SUZHOU LIDE TEXTILE MACHINE PART CO Ltd
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SUZHOU LIDE TEXTILE MACHINE PART CO Ltd
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Application filed by SUZHOU LIDE TEXTILE MACHINE PART CO Ltd filed Critical SUZHOU LIDE TEXTILE MACHINE PART CO Ltd
Priority to CN201110207604XA priority Critical patent/CN102371403A/en
Publication of CN102371403A publication Critical patent/CN102371403A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a machining method of a worm by milling instead of turning and an implementation device thereof, wherein a numerically-controlled machine is adopted to assemble and fix a worm blank to be machined, and the worm blank is driven to respectively do program-controlled displacements in a two-dimensional plane where a central shaft is located along the extending axial direction of the central shaft and the axial direction vertical to the central shaft through program control, and further, do program-controlled autorotation along the one-dimensional axial direction of the central shaft; meanwhile, the program-controlled telescopic adjustment relative to the surface of the worm blank of a milling cutter is adopted to carry out milling machining in a fourth-dimension axial direction vertical to the two-dimensional plane; and the driving on the fourth-dimension axial direction is controlled through a numerically-controlled machine controller, so as to realize the full-automatic machining of the worm. Compared with the traditional machining manner, the processing hour for machining the worm is obviously shortened, the efficiency and the quality for machining are improved, meanwhile, the dependence on technicians and the labor operating intensity of workers are lowered, so that the machining method of the worm by milling instead of turning and the implementation device thereof are more focused on holding the pass of the quality of a finished product. In addition, the implementation conditions of the machining method which uses milling instead of turning are mature, thus, the method is easy to be popularized.

Description

A kind of worm screw is to mill processing method and the device for carrying out said thereof for car
Technical field
The present invention relates to the fully automatic working method of a kind of worm screw, relate in particular to program control milling method and the device for carrying out said thereof of a kind of worm screw.
Background technology
Worm screw is a kind of transmission mechanism that meshes and be used to transmit motion or power with worm gear or helical gear, is usually used in transmitting motion and power between two alternating axis.Can obtain very big gearratio, compacter than crossed helical gears mechanism.Be the line contact between the two-wheeled mesh tooth face, its bearing capacity is much higher than crossed helical gears mechanism; Worm-drive is equivalent to worm drive, is multiple tooth engaged transmission, so stable drive, noise are very little, has self-locking performance; When the lead angle of worm screw during less than the equivalent friction angle of meshing wheel between cog, mechanism has self-locking performance, can realize reverse self-locking, promptly can only drive worm gear by worm screw, and can not be by the worm gear drives worm screw.
According to the difference of worm screw profile geometry, worm screw can be divided into following two big types of seven groups altogether:
(1) normal cylindrical worm gear: normal cylindrical worm gear can be divided into five kinds according to the difference of transverse profile again: a: Archimedes's cylindrical worm (ZA type); This worm screw; On plane (being end face) perpendicular to worm axis; Flank profil is a spiral of Archimedes, is straight line in the flank profil (being axial profile) that comprises on the plane of axis, and its profile angle is 20 degree;
B: normal direction straight profile cylindrical worm (ZN type), this worm screw transverse profile is a prolate involute, normal profile is a straight line;
C: involute helicoid worm (ZI type), the transverse profile of this worm screw is an involute;
D: milled helicoids worm (ZK type) is a kind of non-linear spiral camber worm screw, and normal direction and axial cross section are curve;
E: arc-contact worm (ZC type).
(2) ring surface enveloped worm screw mainly contains three kinds: plane first enveloped enveloping worm, planar double-enveloping worm and hindley worm.
Also there are difference in different worm screws, processing mode, and except that ZK type worm screw, all the other worm screws all can machine on lathe, but the clamping position of lathe tool and mode are all had nothing in common with each other.Traditional worm screw processing mode mainly contains following three types.
1, lathe car system:
Different worm screws mainly leans on the installation site of shape and the lathe tool of lathe tool to guarantee each parameter of worm screw; For multistart worm, need the manual calibration of turner people, the lathe tool shape mainly relies on the workman manually to grind and forms; In the process of car system worm screw; Workman's eyesight, willpower, basic fundamental level, physical qualification etc. have all been proposed very high requirement, and technical merit is higher because car system worm screw can only have, physical qualification turner preferably operation, and the very big subjectivity of the central existence of car system process; Influenced the machining accuracy of workpiece to a great extent, this processing mode has limited the quality and the efficient of worm screw processing.
2, whirlwind mills system:
Whirlwind mills and is and the matching used high speed thread milling of lathe device, cut and two kinds of outer cuts in being divided into.Mill in the system process at whirlwind, co-exist in 5 motions: the a-cutterhead drives the rotation of carbide alloy moulding knife up speed; The b-lathe spindle drives workpiece and rotates at a slow speed; The c-whirlwind mills according to workpiece pitch or helical pitch along the workpiece axially-movable; The d-whirlwind mills under the lathe middle carriage drives and carries out radial motion; The e-whirlwind mills the free degree that in the certain angle scope, also has the lead angle adjustment.Because it is that the cyclone milling head and the engine lathe assembling transformation of the way form that whirlwind mills, part processing precision can't guarantee, be usually used in roughing.
3, worm screw grinds:
On special-purpose worm screw grinding machine, accomplish by forming grinding wheel enveloping worm face.This processing mode only is applicable to fine finishining, and high to the required precision of lathe, is not easy to promote.
Can find out that from above 3 above processing mode exists shortcoming separately: exist the restriction that can't break through at aspects such as machining accuracy, working (machining) efficiency, popularizations, worm screw in enormous quantities for needs, that high accuracy is made can't be satisfied processing request.
Summary of the invention
In view of the defective that above-mentioned prior art exists, the objective of the invention is to propose a kind of worm screw to mill processing method and device for carrying out said thereof for car, solve conventional worm processing to processing technician's high request and dependent problem, improve worm screw working (machining) efficiency and finished product accuracy.
First purpose of the present invention; A kind of worm screw is to mill the processing method for car; Its realization is characterised in that: employing two adds the Digit Control Machine Tool mount former base of worm screw to be processed of one dimension; The former base of said worm screw in the two dimensional surface at central shaft place respectively along central shaft extend axially and with the perpendicular axial program control displacement of central shaft, and along the axial program control rotation of the one dimension of central shaft; On axial perpendicular to the fourth dimension of said two dimensional surface, adopt the telescopic adjustment on the former base of the relative worm screw of milling cutter surface to carry out Milling Process, the projection coordinate of the relative two dimensional surface of said milling cutter remains unchanged.
Further, the two-dimentional program control displacement of the former base of said worm screw, the one dimension telescopic adjustment of program control rotation of one dimension and milling cutter realizes driving through the same controller of Digit Control Machine Tool.
Second purpose of the present invention, a kind of worm screw to be milling the device for carrying out said for car, makes up based on Digit Control Machine Tool and controller thereof, and it realizes that purpose technical characterictic is that said Digit Control Machine Tool has program control four-axle linked boring and milling center, comprising:
First anchor clamps on the two-dimensional axial, second anchor clamps, be used to assemble the former base of worm screw and drive make the program control displacement of its two-dimensional axial, said two-dimensional axial be the former base central shaft of worm screw extend axially and with central shaft perpendicular axially;
One dimension is axially gone up the 3rd anchor clamps of program control rotation, is used for the former base of the said worm screw of relative clamping with second anchor clamps and drives that to make its axial rotation, said one dimension axially be that the central shaft of the former base of worm screw is axial;
The milling cutter of fourth dimension on axially constitutes the quadrature three-dimensional structure with first anchor clamps, second anchor clamps of two-dimensional axial, and said milling cutter is along the axially former base telescopic program control adjusting in surface of worm screw relatively of fourth dimension,
And the program control driving end of said first anchor clamps, second anchor clamps, the 3rd anchor clamps and milling cutter is connected to the controller of Digit Control Machine Tool one by one.
Further; Said first anchor clamps are parallel to the former base central shaft of worm screw and are provided with guide groove; Said second anchor clamps slide and are embedded on the guide groove, and said the 3rd anchor clamps integrate on second anchor clamps, and three anchor clamps constitute the former base attaching of the worm screw understructure at four-axle linked boring and milling center.
Further, said milling cutter is an one coating molding structure, and its normal section is shaped as trapezoidally, and the draft angle of said milling cutter equates with the worm screw pressure angle.
The proposition of worm processing method of the present invention and this innovation scheme of device for carrying out said thereof; Compare to traditional processing mode and obviously shortened the machining period of worm screw; Working (machining) efficiency and quality have been improved; Reduced simultaneously technician's dependence and workman's labor operation intensity, made it more be absorbed in checking on of end product quality.In addition, should be ripe to mill for the processing method implementation condition of car, be easy to promote.
Following constipation closes the embodiment accompanying drawing, and specific embodiments of the invention is done further to detail, so that technical scheme of the present invention is easier to understand, grasp.
Description of drawings
Fig. 1 is the perspective view at the four-axle linked boring and milling center of worm screw of the present invention;
Fig. 2 is the perspective view of the used milling cutter of the present invention;
Fig. 3 is the perspective view that the present invention processes the worm screw that makes.
The specific embodiment
Be example just below with ZN type straight sided normal worm ZN-worm, the whole process of interlocked numerical controlled boring and milling center and coating profile milling cutter machining worm around introduction utilizes in detail, assistant software is example with UGNX.
At first carry out drawing and moulding preparation, after having understood key parameters such as number of threads, modulus, diameter quotient, according to the parametric equation of worm screw formula conversion calculations machine identification according to processing request.Parametric equation after following key parameter that is merely specific worm screw model of giving an example and the conversion thereof, in the actual processing, according to the difference of worm screw type, model, the concrete assignment in those key parameters and the parametric equation thereof will change to some extent.
Then, select suitable milling cutter according to the worm screw parameter.In this example, worm screw is a straight sided normal worm ZN-worm, and blade shapes is for trapezoidal on the normal section; This example adopts profile milling cutter processing; Be that the milling cutter draft angle equals the worm screw pressure angle, when under the milling cutter shear blade, arriving the base circle diameter (BCD) degree of depth, milling cutter equals axial tooth thickness at the diameter dimension of the reference circle degree of depth.
Have program control four-axle linked boring and milling division center from Digit Control Machine Tool again and form, it comprises:
First anchor clamps 1 on the two-dimensional axial, second anchor clamps, be used to assemble the former base 7 of worm screw and drive make the program control displacement of its two-dimensional axial, this two-dimensional axial be former base 7 central shafts of worm screw extend axially and with central shaft perpendicular axially; And main anchor clamps 21 and secondary anchor clamps 22 relative clampings formations that second anchor clamps are served as reasons and distributed along the former base of worm screw 7 two ends.
One dimension is axially gone up the 3rd anchor clamps 3 of program control rotation, is used for the former base 7 of relative clamping worm screw with second anchor clamps and drives that to make its axial rotation, this one dimension axially be that the central shaft of the former base 7 of worm screw is axial;
Milling cutter 8 on fourth dimension is axial; Constitute the quadrature three-dimensional structure with first anchor clamps, second anchor clamps of two-dimensional axial; The cutter head of this milling cutter 8 partly has the screw thread bar that is used for Milling Process; Milling cutter 8 is the axially former base 7 telescopic program control adjustings in surface of worm screw relatively of fourth dimension in the effect lower edge of driving mechanism 4, and Milling Process is carried out on the former base of worm screw 7 surfaces.
And the driving mechanism 4 of these first anchor clamps 1, second anchor clamps, program control driving end that the 3rd anchor clamps 3 are subjected to displacement and milling cutter is connected to the controller (not shown) of Digit Control Machine Tool one by one.And on the basis of accomplishing aforementioned drawing and moulding preparation, to this controller input machining prgraming software.Then those anchor clamps and milling cutter just can be under programme-control to the former base 7 of worm screw carry out automatically, the high accuracy Milling Process, make transverse profile 91 and be prolate involute, normal profile is the straight wide worm screw 9 of straight line.
Through above embodiment for the present invention to mill detailed description for the worm processing method and the device for carrying out said of car, can see obviously that its technical advantage is obvious:
1, shortens machining period, improved working (machining) efficiency.Especially multistart worm is an example with six warp let-off worm screws, and originally in the processing of lathe car system, every needs 10-12 hour ability to accomplish, be equivalent to one day the amount of labour of a workman, and new processing mode just can be accomplished one in 2 hours.
2, reduced labor strength and to the requirement of operator's conventional art level.Owing to adopt intelligent control machine tooling, need not the special messenger and keep an eye on and lathe hand-manipulated, the workman only needs and machine adopted micro computer dialogue man-machine interaction just can be accomplished processing, greatly reduces labour intensity.Sharpening technology, eye hand brain collaboration capabilities for the workman have all reduced requirement.
3, improved crudy.The Digit Control Machine Tool precision is high, and precision is 5 times of lathe, and Digit Control Machine Tool can realize that high rotating speed cutting and thick fine finishining cuts continuously, has simplified technological requirement, has reduced the influence of human factor to quality.
4, be easy to promote.Because the stage that Digit Control Machine Tool, NC cutting tool have developed into a maturation, there are not many restrictions of traditional processing mode in this processing skill, can promote rapidly and carry out.
The foregoing description only is explanation technical conceive of the present invention and characteristics; Its purpose is to let the personage that is familiar with this technology can understand content of the present invention and implements; Can not limit protection scope of the present invention with this; All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.

Claims (5)

1. a worm screw is to mill the processing method for car; It is characterized in that: employing two adds the Digit Control Machine Tool mount former base of worm screw to be processed of one dimension; The former base of said worm screw in the two dimensional surface at central shaft place respectively along central shaft extend axially and with the perpendicular axial program control displacement of central shaft, and along the axial program control rotation of the one dimension of central shaft; On axial perpendicular to the fourth dimension of said two dimensional surface, adopt the telescopic adjustment on the former base of the relative worm screw of milling cutter surface to carry out Milling Process, the projection coordinate of the relative two dimensional surface of said milling cutter remains unchanged.
2. a kind of worm screw according to claim 1 is characterized in that to mill the processing method for car: the two-dimentional program control displacement of the former base of said worm screw, the one dimension telescopic adjustment of program control rotation of one dimension and milling cutter realizes driving through the same controller of Digit Control Machine Tool.
3. a worm screw to be milling the device for carrying out said for car, based on Digit Control Machine Tool and controller thereof and make up, it is characterized in that said Digit Control Machine Tool has program control four-axle linked boring and milling center, comprising:
First anchor clamps on the two-dimensional axial, second anchor clamps, be used to assemble the former base of worm screw and drive make the program control displacement of its two-dimensional axial, said two-dimensional axial be the former base central shaft of worm screw extend axially and with central shaft perpendicular axially;
One dimension is axially gone up the 3rd anchor clamps of program control rotation, is used for the former base of the said worm screw of relative clamping with second anchor clamps and drives that to make its axial rotation, said one dimension axially be that the central shaft of the former base of worm screw is axial;
The milling cutter of fourth dimension on axially constitutes the quadrature three-dimensional structure with first anchor clamps, second anchor clamps of two-dimensional axial, and said milling cutter is along the axially former base telescopic program control adjusting in surface of worm screw relatively of fourth dimension,
And the program control driving end of said first anchor clamps, second anchor clamps, the 3rd anchor clamps and milling cutter is connected to the controller of Digit Control Machine Tool one by one.
4. a kind of worm screw according to claim 3 is to mill the device for carrying out said for car; It is characterized in that: said first anchor clamps are parallel to the former base central shaft of worm screw and are provided with guide groove; Said second anchor clamps slide and are embedded on the guide groove; Said the 3rd anchor clamps integrate on second anchor clamps, and three anchor clamps constitute the former base attaching of the worm screw understructure at four-axle linked boring and milling center.
5. a kind of worm screw according to claim 3 is characterized in that to mill the device for carrying out said for car: said milling cutter is an one coating molding structure, and its normal section is shaped as trapezoidally, and the draft angle of said milling cutter equates with the worm screw pressure angle.
CN201110207604XA 2011-07-25 2011-07-25 Machining method of worm by milling instead of turning and implementation device thereof Pending CN102371403A (en)

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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103182564A (en) * 2013-03-25 2013-07-03 北京工商大学 Turning-milling linkage machining method of large-pitch worm
CN107186286A (en) * 2017-06-08 2017-09-22 宁波文力自动化科技有限公司 Automatic small worm screw machine and its assemble method
CN108058000A (en) * 2016-11-09 2018-05-22 上海龙钰电梯配件有限公司 A kind of processing method of ZC types endless screw-worm gear pair
CN109434219A (en) * 2018-12-21 2019-03-08 重庆齿轮箱有限责任公司 A kind of four axis side edge mill teeth methods
CN109794656A (en) * 2019-01-23 2019-05-24 潘琪 A kind of screw rod production and processing tapping machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB841601A (en) * 1958-03-05 1960-07-20 William Henry Bateman A method and means for forming the teeth of gear wheels and the like
CN201002152Y (en) * 2007-02-27 2008-01-09 天津市进口精密设备新技术发展公司 Highly effective digital control tooth chamfering machine
CN101342614A (en) * 2008-08-01 2009-01-14 洛阳科锐机电设备有限公司 Finger cutter type helical bevel gear processing device
CN101362229A (en) * 2008-09-08 2009-02-11 浙江大学 Numerical control five-axle linkage planar double enveloping worm cyclone cutting machine tool
CN101837484A (en) * 2010-05-31 2010-09-22 中国农业大学 Milling method of spiral surface of ring surface worm

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB841601A (en) * 1958-03-05 1960-07-20 William Henry Bateman A method and means for forming the teeth of gear wheels and the like
CN201002152Y (en) * 2007-02-27 2008-01-09 天津市进口精密设备新技术发展公司 Highly effective digital control tooth chamfering machine
CN101342614A (en) * 2008-08-01 2009-01-14 洛阳科锐机电设备有限公司 Finger cutter type helical bevel gear processing device
CN101362229A (en) * 2008-09-08 2009-02-11 浙江大学 Numerical control five-axle linkage planar double enveloping worm cyclone cutting machine tool
CN101837484A (en) * 2010-05-31 2010-09-22 中国农业大学 Milling method of spiral surface of ring surface worm

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103182564A (en) * 2013-03-25 2013-07-03 北京工商大学 Turning-milling linkage machining method of large-pitch worm
CN103182564B (en) * 2013-03-25 2016-03-02 北京工商大学 A kind of turnning and milling linkage motion cutting method of coarse pitch worm screw
CN108058000A (en) * 2016-11-09 2018-05-22 上海龙钰电梯配件有限公司 A kind of processing method of ZC types endless screw-worm gear pair
CN107186286A (en) * 2017-06-08 2017-09-22 宁波文力自动化科技有限公司 Automatic small worm screw machine and its assemble method
CN109434219A (en) * 2018-12-21 2019-03-08 重庆齿轮箱有限责任公司 A kind of four axis side edge mill teeth methods
CN109794656A (en) * 2019-01-23 2019-05-24 潘琪 A kind of screw rod production and processing tapping machine

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Application publication date: 20120314