CN2031081U - Measurer for short amplitude external cycloidal teeth-shaped error - Google Patents
Measurer for short amplitude external cycloidal teeth-shaped error Download PDFInfo
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- CN2031081U CN2031081U CN 87216540 CN87216540U CN2031081U CN 2031081 U CN2031081 U CN 2031081U CN 87216540 CN87216540 CN 87216540 CN 87216540 U CN87216540 U CN 87216540U CN 2031081 U CN2031081 U CN 2031081U
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- basic circle
- cycloid
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Abstract
A measurer for short amplitude external cycloidal teeth-shaped error of the utility model is provided with a short amplitude external cycloidal generating mechanism, a normal line following mechanism and a base circle adjusting mechanism. The utility model can continuously and accurately measure the teeth shaped error of the measured cycloid gear on the normal line direction. The device has simple structure and convenient measurement. The utility model is especially suitable for being used in producing shops of the short amplitude external cycloid gears.
Description
The utility model belongs to the gear testing device.
At present, mechanical industry is when detecting the curtate epicycloid tooth error, and three-coordinate measuring machine is adopted in precision measurement usually, the measuring accuracy height, but it is a laboratory equipment, complex structure, and efficiency of measurement is low, is not easy to use at workshop.Usually adopt aborning and measure the distance error of tooth top to tooth top, tooth top between cog, this method measuring error is big, can not reflect the actual tooth error of whole flank profil comprehensively.Developed a kind of excellent amount method in recent years, rod amount method as March first in 1981 the Ministry of Machine-Building Industry's science and technology department and first research institute of the Ministry of Machine-Building Industry tissue characterization, adopt the canonical measure rod of three different-diameters to determine whether cycloidal tooth profile is qualified, this method is measured the method for tooth top to tooth top, tooth top to interdental space, precision increases, but still is discrete data, can not continuous coverage, precision is still relatively poor, and inconvenience is used in Gear Production.
The purpose of this utility model provides the mechanical type curtate epicycloid tooth error measurement mechanism of the higher energy continuous coverage of a kind of precision that can use in Gear Production.
Below in conjunction with embodiment and accompanying drawing the utility model is described in detail.
Fig. 1 is the shaft side projection drawing of curtate epicycloid tooth error measurement mechanism.
Fig. 2 is the vertical view of curtate epicycloid tooth error measurement mechanism.
Fig. 3 is A-A and the E-E cut-open view among Fig. 2.
Fig. 4 is the B-B cut-open view among Fig. 2.
Fig. 5 is the C-C sectional view among Fig. 2.
Fig. 6 is the D-D sectional view among Fig. 2.
Fig. 7 is the front elevation of horizontal ram.
Fig. 8 is the vertical view of horizontal ram.
Fig. 9 is the F-F cut-open view among Fig. 7.
The name of each parts is called among Fig. 1-9: 1, support; 2, the vertical ram in a left side; 3, the vertical ram left pressing plate in a left side; 4, the right pressing plate of the vertical ram in a left side; 5, web joint behind vertical ram; 6, basic circle wheel; 7, gland nut; 8, steel wire retention mechanism; 9, backup plate; 10, sine protractor register pin; 11, sine protractor; 12, right vertically ram; 13, horizontal ram; 14, instantaneous centre pin fixed pin; 15, web joint before vertical ram; 16, instantaneous centre pin; 17, shift fork; 18, gauge head; 19, clock gauge holder; 20, clock gauge; 21, wing nut; 22, roller; 23, sine protractor sliding pin; 24, sine protractor setscrew nut; 25, gear; 26, bearing seat; 27, right hand wheel; 28, the pin guide takes place in cycloid; 29, cycloid is sold; 30, roller bearing pin; 31, left hand wheel installing plate; 32, left hand wheel; 33, screw set; 34, leading screw; 35, steel wire; 36, basic circle axle sleeve; 37, tommy; 38, socket head cap screw; 39, sine protractor slip guide; 40, sine protractor set bolt; 41, horizontal ram fixed pin; 42, horizontal ram left support abutment guide rail; 43, horizontal ram right support abutment guide rail; 44, gear shaft.
Curtate epicycloid tooth error measurement mechanism of the present utility model comprises that support, curtate epicycloid take place and parts such as normal follower, basic circle adjusting mechanism, measurement instrument, its shaft side projection drawing as shown in Figure 1, Fig. 2 is its vertical view.Support (1) is made by cast iron, in order to each parts to be installed.Measurement instrument can be used clock gauge, directly reads tooth error, also can adopt electronic instrument, and embodiment of the present utility model adopts clock gauge.
Curtate epicycloid takes place and the normal follower comprises roller (22), instantaneous centre pin (16), shift fork (17), cycloid is sold (29), horizontal ram parts such as (13), roller (22) is meshed with the tooth bar of horizontal ram (13) left end leading edge, the center of instantaneous centre pin (16) is in the top of horizontal ram (13) left end leading edge pitch line, the center that cycloid is sold (29) is in the below of tested Cycloidal Wheel and instrument head (18) contact position, shift fork (17) is sold (29) by instantaneous centre pin (16) and cycloid, and can sell (29) around cycloid rotates, test instrumentation is contained on the shift fork (17), the axis of shift fork (17) is vertical with the flank profil of tested Cycloidal Wheel all the time, thereby the tooth error of surveying is the normal error of tested the form of cycloidal gear tooth.
Curtate epicycloid takes place and the structure of normal follower is seen Fig. 2, Fig. 3, instantaneous centre pin (16) is installed on the fixed head (14), fixed head (14) is fixed together with screw and left hand wheel installing plate (31), left hand wheel installing plate (31) has the dovetail structure, can do longitudinal sliding motion in the dovetail groove of support (1).On the left hand wheel installing plate (31) guide groove is arranged, be used for fixing roller bearing pin (30).The left hand wheel is equipped with in left hand wheel installing plate (31) lower end, and be fixed together with web joint (15) before screw and the vertical ram, left hand wheel (32) is equipped with leading screw (34), and leading screw (34) is installed on the support (1) by screw set (33).When left hand wheel (32) rotates, curtate epicycloid generation and normal follower are vertically moved, thereby can adjust the distance between instantaneous centre pin (16) and the basic circle wheel (6).Roller bearing pin (30) is fixed on the left hand wheel installing plate (31).Roller (22) is enclosed within on the roller bearing pin (30), can rotate.The periphery of roller (22) is a spur gear, just in time mesh with the tooth bar of horizontal ram (13) left end leading edge, the top that is centered close to horizontal ram (13) left end leading edge pitch line of instantaneous centre pin (16) when horizontal ram (13) when making move left and right, drives roller (22) and rotates.This device has the roller of several different-diameters according to curtate epicycloid gear series, selects for use for different Cycloidal Wheel.The roller that different-diameter is installed need change roller bearing pin (30) and take turns position in installing plate (31) guide groove leftward.Be fixed with cycloid on the roller (22) and sell (29).Shift fork (17) is made by aluminium alloy, has a borehole jack to sell at cycloid on (29) on it, can sell (29) around cycloid and rotate.One end of shift fork (17) is equipped with instrument holder (19), by wing nut (21) instrument (20) is fixed on the shift fork (17); The other end of shift fork (17) has guide groove, and instantaneous centre pin (16) can be free to slide in groove, but does not have the gap.Instrument adopts clock gauge in an embodiment, and its gauge head (18) contacts with tested Cycloidal Wheel, directly reads tooth error by clock gauge.Also can adopt electronic instrument, gauge head adopts sensor displacement can be transformed into electric signal, and electric signal input instrument or computing machine are shown or printed measurement result by instrument or computing machine.
Cycloid takes place and the effect of normal follower, is the pure rolling of roller on basic circle to be become roller rotate in the original place, and to make the error that records be the normal error of tested cycloidal tooth profile all the time.Cycloid is roller pure rolling and taking place on basic circle, and the contact point of roller and basic circle is that cycloid pin takes place produces the instantaneous centre of gyration of curtate epicycloid with respect to the basic circle wheel, and instantaneous centre moves on basic circle, and cycloid pin takes place produces curtate epicycloid.Certain is a bit motionless because the instantaneous centre pin is fixed on the basic circle to adopt this mechanism, and is in again on the roller periphery, and therefore, when roller rotated, the track of pin took place cycloid, as with respect to the basic circle expansion, was the standard curtate epicycloid.Because shift fork is sold through instantaneous centre pin and cycloid, therefore, the axis of shift fork points to the normal direction of cycloid all the time.As from the foregoing, the tooth error of using this device to record is a normal error, and is more accurate, and the tooth error of energy continuous coverage cycloid each point.
The basic circle adjusting mechanism comprises basic circle wheel (6), sine protractor (11), backup plate (9), register pin (10), sliding pin (23), horizontal ram parts such as (13), basic circle wheel (6) closely contacts with backup plate (9) left side by steel wire (35), sine protractor (11) can rotate around the register pin (10) that is fixed on the backup plate (9), thereby can adjust the angle between sine protractor (11) center line and backup plate (9) left side, to adapt to the tested Cycloidal Wheel of different base radius.The sliding pin (23) that is fixed on the horizontal ram (13) can slide in the guide groove at sine protractor (11) middle part.
The structure of basic circle adjusting mechanism is seen Fig. 2, Fig. 4.Below the basic circle wheel (6) axle is arranged, be installed on the support (1) by the axle sleeve (36) that is set on the support (1), basic circle wheel (6) can rotate in axle sleeve (36).One threaded axle is arranged above the basic circle wheel (6), be used to place tested Cycloidal Wheel, and tested Cycloidal Wheel and basic circle wheel (6) are fixed together by gland nut (7).Basic circle wheel (6) periphery and backup plate (9) left side are all fluted, and interior dress is used for driving basic circle wheel (6) and rotates but nonslipping tensioning steel wire (35).One end of steel wire (35) is fixed on the rear end, left side of backup plate (9), behind the groove of steel wire (35) pile warp basic circle wheel (6), the other end of steel wire is fastened on the left side front end of backup plate (9) by steel wire retention mechanism (8), with screw that steel wire (35) is fixing in the groove of basic circle wheel (6) simultaneously, making it can not play.Steel wire (35) in basic circle wheel (6) and backup plate (9) left groove drives basic circle wheel (6) and rotates.Backup plate (9) is the rectangular steel plates of a band dovetail, can do longitudinal sliding motion in the dovetail groove of support (1).The last in-plane left side of backup plate (9) is installed in register pin (10), and register pin (10) is inserted in the hole of sine protractor (11) one ends, and sine protractor (11) can rotate around register pin (10).At backup plate (9) front end one arc guide barrel is arranged, corresponding with the hole of sine protractor (11) other end.There is a flat head anchor bolt (40) to pass the guide groove and the sine protractor hole of backup plate (9), sine protractor (11) is fastened on the backup plate (9) by hold-down nut (24).On the arc trough rim of backup plate (9), the corresponding scale of the angle α between sine protractor (11) center line and backup plate (9) left side is arranged, can directly read the reading at α angle by the transparent fenestra of sine protractor (11) end.When the angle α between the need adjustment sine protractor (11) and backup plate (9) left side, hold-down nut (24) can be unclamped, making set bolt (40) drive sine protractor (11) rotates, when read the transparent fenestra from sine protractor value when equaling the angle of required adjustment, hold-down nut (24) is tightened.At sine protractor (11) middle part one guide groove is arranged, the sliding pin (23) that is fixed on the horizontal ram (13) is inserted in wherein, can slide in guide groove, and sliding pin (23) is with slip guide (39), the resistance when sliding to reduce.When horizontal ram (13) move left and right, sliding pin (23) slides in the guide groove of sine protractor (11), vertically moves thereby drive backup plate (9).
The effect of basic circle adjusting mechanism is to measure with the tested cycloidal gear that a basic circle wheel adapts to different base radius.If basic circle wheel radius is R, tested Cycloidal Wheel base radius is r, the basic circle wheel is identical with the angle that tested Cycloidal Wheel turns over, be made as φ, the angle of establishing again between the sine protractor center line and the backup plate left side is α, then, can get r φ=R φ tg α, i.e. α=arctg(r/R) according to the geometric relationship of sine protractor.Therefore, corresponding to different base radius r, need only the angle α that presses between the following formula adjustment sine protractor and the backup plate left side, the basic circle that a promptly available radius is R is taken turns and is measured.
This device has two vertical rams (2,12) and a horizontal ram (13), and vertically ram (2,12) is fixed together with forward and backward web joint (5,15) with tommy (37) and socket head cap screw (38), sees the E-E cut-open view among Fig. 3.Article two, vertical ram (2,12) is parallel, can do longitudinal sliding motion on support (1).The vertical ram (2) in a left side is subjected to being fixed on the restriction of the pressing plate (3,4) on the support (1), can do longitudinal sliding motion on support (1).The right vertically bottom of ram (12) is a swallow-tail form, can do longitudinal sliding motion in the dovetail groove of support (1).On the support (1) in the vertical ram in the right side (12) left side, a rule is arranged, on the vertical ram in the right side (12), scale mark is arranged, the pairing rule reading of mark is the distance between instantaneous centre pin (16) and basic circle wheel (6) axle center.Laterally the shape of ram (13) is shown in Fig. 7-9.Laterally ram (13) left end leading edge is a tooth bar, is meshed with the straight-tooth of roller (22); Also there is tooth bar the right-hand member front lower place, is meshed with gear (25) on being contained in right hand wheel (27).When right hand wheel (27) rotates, gear (25) drives horizontal ram (13) move left and right, laterally ram (13) drives roller (22) rotation again, vertically moves by sliding pin (23) drive sine protractor (11) and backup plate (9) again simultaneously.Laterally ram (13) and vertically annexation such as Fig. 5, shown in Figure 6 of ram (2,12).Laterally ram (13) is fixed on fixed pin (41) on the left and right bearing guide rail (42,43) of band dovetail, and left and right bearing guide rail (42,43) is done respectively laterally to slide in the dovetail groove of left and right vertical ram (2,12).
The operation steps of measuring the form of cycloidal gear tooth error is as follows:
1, parameters such as the base radius r of the tested Cycloidal Wheel of understanding, rolling circle radius, radius of addendum.According to rolling circle radius and radius of addendum, select suitable roller, be installed on this device.
2, obtain the α value according to α=arctg(r/R).Unclamp sine protractor hold-down nut (24), making the reading of the transparent fenestra indication of sine protractor (11) is the α value, be that angle between the sine protractor (11) and backup plate (9) left side is α, fastening nut (24) is fixed on the backup plate (9) sine protractor (11) then.
3, rotate right hand wheel (27), allow horizontal ram (13) drive roller (22) and rotate, up to cycloid sell (29), instantaneous centre pin (16) and basic circle take turns (6) axle center in a straight line till.
4, rotate left hand wheel (32), vertical ram is moved forward and backward, till the pairing rule reading of the vertical ram in the right side (12) mark equals base radius r.Be that the distance that instantaneous centre pin (16) is taken turns (6) center to basic circle equals base radius.
5, tested Cycloidal Wheel is installed, and makes tooth top (or tooth root) aligning cycloid sell (29), tighten gland nut (7) then, tested Cycloidal Wheel is fixed on the basic circle wheel (6).
6, install and measure instrument clock gauge (20), gauge head (18) is just in time contacted with the tooth top (or tooth root) of Cycloidal Wheel, and to make the reading of clock gauge be 0.Gauge head this moment (18) just in time is in the top that cycloid is sold (29) with the contact point of Cycloidal Wheel.
7, rotate right hand wheel (27), laterally ram (13) moves laterally, and by sine protractor sliding pin (23) backup plate (9) is vertically moved, because the effect of steel wire makes basic circle wheel and tested Cycloidal Wheel turn over an angle.Meanwhile, laterally ram (13) drives roller (22) rotation, and shift fork (17) and clock gauge (20) also produce motion.The different parts of the tested Cycloidal Wheel flank profil of clock gauge gauge head (18) contact.Because after the movement locus that cycloid takes place to sell launches is standard curtate epicycloid profile of tooth, if Cycloidal Wheel processing is extremely accurate, profile of tooth is the standard cycloid, and then the reading of clock gauge is always 0, if Cycloidal Wheel processing is very inaccurate, then can read the normal error of processing profile of tooth from clock gauge.According to the size of error, can determine whether the crudy of tested curtate epicycloid gear is qualified.
The utlity model has following advantages:
1, this device takes place and the normal follower with curtate epicycloid, the profile error that records be tested the form of cycloidal gear tooth and standard tooth form in the difference of normal direction, thereby very accurate.
But the normal error of 2 continuous coverage flank profil each points.
3, the basic circle adjusting mechanism is housed, adopts a basic circle wheel just can measure the Cycloidal Wheel of different base radius.
If 4 measurement instruments adopt inductance amesdial and circular chart, then can measure the circular pitch error and the accumulative pitch error of Cycloidal Wheel.
5, simple in structure, low cost of manufacture, it is convenient to measure, and can use at workshop.
Claims (2)
1, a kind of curtate epicycloid tooth error measurement mechanism, it is characterized in that comprising support, curtate epicycloid takes place and the normal follower, the basic circle adjusting mechanism, measurement instrument, curtate epicycloid takes place and the normal follower comprises roller (22), instantaneous centre pin (16), shift fork (17), cycloid is sold (29), horizontal ram (13), roller (22) is meshed with the tooth bar of horizontal ram (13) left end leading edge, the center of instantaneous centre pin (16) is in the top of horizontal ram (13) left end leading edge pitch line, the center that cycloid is sold (29) is in the below of tested Cycloidal Wheel and instrument head (18) contact position, and shift fork (17) is sold (29) by instantaneous centre pin (16) and cycloid and can be sold (29) around cycloid and rotate.
2, according to the curtate epicycloid tooth error measurement mechanism of claim 1, it is characterized in that described basic circle adjusting mechanism comprises basic circle wheel (6), sine protractor (11), backup plate (9), register pin (10), sliding pin (23), horizontal ram (13), basic circle wheel (6) closely contacts with backup plate (9) left side by steel wire (35), sine protractor (11) can rotate around the register pin (10) that is fixed on the backup plate (9), and the sliding pin (23) that is fixed on the horizontal ram (13) can slide in the guide groove at sine protractor (11) middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87216540 CN2031081U (en) | 1987-12-17 | 1987-12-17 | Measurer for short amplitude external cycloidal teeth-shaped error |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87216540 CN2031081U (en) | 1987-12-17 | 1987-12-17 | Measurer for short amplitude external cycloidal teeth-shaped error |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2031081U true CN2031081U (en) | 1989-01-18 |
Family
ID=4830468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87216540 Withdrawn CN2031081U (en) | 1987-12-17 | 1987-12-17 | Measurer for short amplitude external cycloidal teeth-shaped error |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2031081U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112097705A (en) * | 2020-08-04 | 2020-12-18 | 盐城工学院 | Cycloid gear precision detection sample plate |
-
1987
- 1987-12-17 CN CN 87216540 patent/CN2031081U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112097705A (en) * | 2020-08-04 | 2020-12-18 | 盐城工学院 | Cycloid gear precision detection sample plate |
| CN112097705B (en) * | 2020-08-04 | 2022-03-25 | 盐城工学院 | Cycloid gear precision detection sample plate |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |