CN101444859A - Link mechanism with quick-return characteristic for primary motion of gear slotting machine - Google Patents

Link mechanism with quick-return characteristic for primary motion of gear slotting machine Download PDF

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Publication number
CN101444859A
CN101444859A CNA2008102374564A CN200810237456A CN101444859A CN 101444859 A CN101444859 A CN 101444859A CN A2008102374564 A CNA2008102374564 A CN A2008102374564A CN 200810237456 A CN200810237456 A CN 200810237456A CN 101444859 A CN101444859 A CN 101444859A
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China
Prior art keywords
rod member
quick
return
motion
slider
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Pending
Application number
CNA2008102374564A
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Chinese (zh)
Inventor
易传云
钟瑞龄
曹祥敖
陈静
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Yichang Changjiang Machine Technology Co Ltd
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Yichang Changjiang Machine Technology Co Ltd
Priority date (The priority date 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 date listed.)
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Application filed by Yichang Changjiang Machine Technology Co Ltd filed Critical Yichang Changjiang Machine Technology Co Ltd
Priority to CNA2008102374564A priority Critical patent/CN101444859A/en
Publication of CN101444859A publication Critical patent/CN101444859A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a link mechanism with quick-return characteristic for primary motion of a gear slotting machine, belonging to the technical field of machine tool structure design. The link mechanism adopts an optimized slider crank mechanism and an optimized plane four bar mechanism to obtain an optimal ratio among bar lengths, during a reciprocating slotting process of a slider, the time required in an operating stroke stage is about 66.67% of the entire period of motion, and the quick-return speed ratio coefficient is 1.90, indicating a good quick-return motion characteristic. The slider speed substantially remains uniform in a driving crank rotation angle range of 150-300DEG, the time spent for which is about 63.60% of the operating stroke stage, so as to remarkably reduce idle stroke distance and increase the speed of return stroke, thereby improving slotting efficiency.

Description

A kind of linkage that applies to the gear shapping machine main motion with quickreturn characteristics
Technical field
The present invention relates to the gear shapping machine technical field of structures, particularly a kind of linkage that applies to the gear shapping machine main motion with quickreturn characteristics.
Background technology
Traditional gear shapping machine main motion mechanism adopts slider-crank mechanism, slide block reciprocating motion speed is the bigger variable motion of excursion, during Gear Shaping, need to increase incision and cut out long one section cut-in without ball stroke, could obtain cutting impulse stroke cutting speed relatively uniformly.Slider-crank mechanism moves back and forth does not have quickreturn characteristics, and under same reciprocating frequence, gear shaping stroke and backlash stroke occupy the same time, the raising of restriction working (machining) efficiency.
The characteristics of modern gear shapping machine are to strengthen the lathe rigidity, improve cutting speed, the cutting time kept in reserve is reduced as far as possible, yet this method have certain limit.Therefore, high efficiency lathe ubiquity the time kept in reserve and is gradually reduced, and the contradiction that can't change non-cutting time, and both ratio is increasing, hampers the development of mass production.
The main motion mechanism that at present domestic gear shapping machine adopts, be generally centric slider-crank mechanism, do not have quickreturn characteristics, though what have may have quickreturn characteristics, but because its geometric parameter is subjected to the restriction of gear shapping machine topology layout, quickreturn characteristics is not obvious, for example crank rocker-tooth fan rackwork.Three problems below will bringing in the gear shaping process like this: (1) reduces the productivity ratio of lathe; (2) life-span of minimizing pinion cutter; (3) influence the processing roughness of the workpiece flank of tooth.In addition, removing needs mechanism to have bigger advanceto returntime ratio, and also wishing has movement velocity uniformly in impulse stroke, to guarantee that surface to be machined has surface quality uniformity preferably in the processing stroke.
Summary of the invention
The objective of the invention is to provide a kind of shortening work idle stroke, improve opening speed, do not reduce the production efficiency of lathe, do not influence the service life of pinion cutter and the processing roughness of the workpiece flank of tooth, the little linkage that applies to the gear shapping machine main motion of processing stroke motion velocity variations with quickreturn characteristics.
The object of the present invention is achieved like this: a kind of linkage with quickreturn characteristics that applies to the gear shapping machine main motion comprises slide block F, rod member l 4Two ends are connected with fixed hinge D with fixed hinge A respectively, rod member l 4One end and rod member l 1Connect rod member l 1By hinge B and rod member l 2Connect rod member l 2By hinge C and rod member l 3Connect rod member l 3With rod member l 5Simultaneously with rod member l 4The other end connect rod member l 5By hinge E and rod member l 6Connect rod member l 6F is connected with slide block, rod member l 1With rod member l 2, rod member l 3, rod member l 4, rod member l 5With rod member l 6Between length compare l 1: l 2: l 3: l 4: l 5: l 6=8.40: 12.63: 12.75: 4.53: 2.1: 30.04: 1.06.
The linkage that applies to the gear shapping machine main motion provided by the invention with quickreturn characteristics, adopt to optimize by slider-crank mechanism and four-bar linkage, obtain the optimum ratio between the rod member length, slide block is in a reciprocal slotting process, impulse stroke stage required time accounts for 66.67% of the whole period of motion, its anxious time speed ratio factor is 1.90, and the quick return characteristic is good.Ram speed is to remain a constant speed substantially in 150 °～300 ° at the driving crank corner, and this section period accounts for about 63.60% of the time in impulse stroke stage, has shortened the idle stroke distance greatly.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a fundamental diagram of the present invention.
Fig. 2 is an initial value slider displacement curve map.
Fig. 3 adopts technical scheme rear slider displacement curve figure of the present invention.
Fig. 4 is an initial value ram speed curve map.
Fig. 5 adopts technical scheme rear slider speed curve diagram of the present invention.
Fig. 6 is an initial value slide block acceleration plots.
Fig. 7 adopts technical scheme rear slider acceleration plots of the present invention.
Fig. 8 is the slide block schematic diagram that travels forward.
Fig. 9 is that slide block moves forward to the extreme position schematic diagram.
Figure 10 is a slide block motion schematic diagram backward.
Figure 11 is that slide block moves to the extreme position schematic diagram backward.
The specific embodiment
As shown in Figure 1, the present invention includes slide block F, pinion cutter just, rod member l 4Two ends are connected with fixed hinge D with fixed hinge A respectively, rod member l 4One end and rod member l 1Connect rod member l 1By hinge B and rod member l 2Connect rod member l 2By hinge C and rod member l 3Connect rod member l 3With rod member l 5Simultaneously with rod member l 4The other end connect rod member l 5By hinge E and rod member l 6Connect rod member l 6F is connected with slide block, rod member l 1With rod member l 2, rod member l 3, rod member l 4, rod member l 5With rod member l 6Between length compare l 1: l 2: l 3: l 4: l 5: l 6=8.40: 12.63: 12.75: 4.53: 2.1: 30.04:1.06.
The present invention is applicable to the gear shapping machine of different size, remains l1: l in the use 2: l 3: l 4: l 5: l 6=8.40: 12.63: 12.75: 4.53: 2.1: 30.04: 1.06 ratios, in conjunction with concrete structural form, design the complete linkage device of optimizing kinetic characteristic that has.
Determine l 1, l 2, l 3, l 4, l 5And l 6Length after, included angle determines that thereupon six-bar mechanism and characteristic thereof are just decided, l 3And l 5By the big or small relative fixed of included angle, at this moment 3And l 5Actual becoming one is as driving link l 1When fulcrum A rotates, drive by six-bar mechanism, slide block F, promptly the pinion cutter of gear shapping machine is done straight reciprocating motion, and the speed when slide block F moves back and forth is different.Fig. 8～Figure 11 is the slide block motion state diagram of one period of motion.
Driving link l 1A turns clockwise around fulcrum, slide block F, i.e. and pinion cutter, to the X-axis positive movement, i.e. cutting movement, as shown in Figure 8.The optimization characteristics of six-bar mechanism have guaranteed the proal at the uniform velocity property of slide block, realize constant speed cut, help the raising of machining accuracy and cutter life.Work as l 1When going to position shown in Figure 9, slide block moves forward to the limit, and cutting movement finishes.Along with l 1Remain in operation, slide block begins drawback movement, promptly the pinion cutter idle stroke is returned, as shown in figure 10, this moment cutter do not participate in cutting, for the shortening time, raise the efficiency, will return rapidly with fast speeds during the slide block backhaul, i.e. the quickreturn characteristics of pinion cutter.Six-bar mechanism can be guaranteed the realization of this characteristic after the optimal design.Work as l 1Forward figure l to 1Shown in during the position, slide block F, promptly pinion cutter is back to extreme position, quick return finishes, along with l 1Rotation, next shuttling movement is proceeded.

Claims (1)

1, a kind of linkage with quickreturn characteristics that applies to the gear shapping machine main motion comprises slide block (F), it is characterized in that: rod member (l 4) two ends are connected rod member (l with fixed hinge (A) with fixed hinge (D) respectively 4) end and rod member (l 1) connect rod member (l 1) by hinge (B) and rod member (l 2) connect rod member (l 2) by hinge (C) and rod member (l 3) connect rod member (l 3) and rod member (l 5) while and rod member (l 4) the other end connect rod member (l 5) by hinge (E) and rod member (l 6) connect rod member (l 6) be connected rod member (l with slide block (F) 1) and rod member (l 2), rod member (l 3), rod member (l 4), rod member (l 5) and rod member (l 6) between length compare l 1: l 2: l 3: l 4: l 5: l 6=8.40: 12.63: 12.75: 4.53: 2.1: 30.04: 1.06.
CNA2008102374564A 2008-12-25 2008-12-25 Link mechanism with quick-return characteristic for primary motion of gear slotting machine Pending CN101444859A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2008102374564A CN101444859A (en) 2008-12-25 2008-12-25 Link mechanism with quick-return characteristic for primary motion of gear slotting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2008102374564A CN101444859A (en) 2008-12-25 2008-12-25 Link mechanism with quick-return characteristic for primary motion of gear slotting machine

Publications (1)

Publication Number Publication Date
CN101444859A true CN101444859A (en) 2009-06-03

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CNA2008102374564A Pending CN101444859A (en) 2008-12-25 2008-12-25 Link mechanism with quick-return characteristic for primary motion of gear slotting machine

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102528518A (en) * 2012-02-03 2012-07-04 宜昌市致远新技术有限公司 Gear shaping machine main motion control device
CN105569323A (en) * 2015-12-17 2016-05-11 合肥工业大学 Wall painting machine based on single-degree-of-freedom seven-rod mechanism
CN106592158A (en) * 2013-12-02 2017-04-26 张太平 Quick-return beat-type washing machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102528518A (en) * 2012-02-03 2012-07-04 宜昌市致远新技术有限公司 Gear shaping machine main motion control device
CN102528518B (en) * 2012-02-03 2013-10-02 宜昌市致远新技术有限公司 Gear shaping machine main motion control device
CN106592158A (en) * 2013-12-02 2017-04-26 张太平 Quick-return beat-type washing machine
CN106592158B (en) * 2013-12-02 2019-07-12 绍兴钱通化纤有限公司 Quick-returning beating type washing machine
CN105569323A (en) * 2015-12-17 2016-05-11 合肥工业大学 Wall painting machine based on single-degree-of-freedom seven-rod mechanism
CN105569323B (en) * 2015-12-17 2017-09-29 合肥工业大学 A kind of wall plastering apparatus based on single-degree-of-freedom seven-bar mechanism

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Open date: 20090603