CN2071338U - Measuring machine for plane two-time envelope arc worm - Google Patents

Abstract

The utility model provides a measuring machine for plane two-time envelope arced surface worm pair, comprising a motor, a transmission mechanism, a bed body, worm drive shaft slide carriages which are provided with worm drive shafts and respectively arranged on the bed body and a guide rail, a worm driven shaft slide carriage with a worm driven shaft, a main shaft, circular raster angular displacement sensors respectively installed on the worm driven shaft or the main shaft, a signal processing apparatus, a computer and a plotter. The utility model can conveniently, accurately and expeditiously measure the combined error and the individual error of the plane two-time envelope arced surface worm pair. The utility model provides a theoretical basis for the improvement of technical analysis and processing equipment, which is favorable for improving the production efficiency and the processing quality of the worm pair.

Description

Measuring machine for plane two-time envelope arc worm

The utility model relates to a kind of can accurately intactly reflect and the plane-generated double enveloping hourglass worm of the detection plane twice-enveloping hourglass worm precision of paying is paid measuring machine.

At present, general manufacturer all adopts the method for the contact (area) pattern that planar quadratic and annular enveloping worm pays to check the precision that the plane-generated double enveloping hourglass worm is paid.In the method, the transmission of intermeshing of a pair of Worm screw and worm-gear drive is tinted on the flank of tooth of engagement simultaneously, observes the impression of its contact (area) pattern after transmission, and the size of impression, shape and the distribution situation on the flank of tooth are judged the transmission accuracy of Worm screw and worm-gear drive.This method is easy to be directly perceived, but comprehensive deviation and mutual alignment deviation that it can only qualitative roughly reflection Worm screw and worm-gear drive, can not obtain the data of error, can not draw out graph of errors.

The circular pitch error that some producer uses general gear circular pitch somascope inspection plane-generated double enveloping hourglass worm to pay middle worm gear, this is an individual event precision of worm gear, the comprehensive driving error that can not reflect worm gear, moreover the plane-generated double enveloping hourglass worm is paid has two-wire contact and the multiple tooth characteristic that contacts, the state when checking the worm gear circular pitch with the circular pitch somascope and the duty of worm gear reality also have difference, this difference has caused the theoretical error of measuring, and brings in the measurement result.

At present public use be used to measure the measuring machine that normal cylindrical worm gear is paid, can only measure tangential composition error and tangential adjacent teeth composition error that normal cylindrical worm gear is paid, and the distribution situation of contact (area) pattern etc., this traditional measuring machine can not carry out the helix of worm screw in the Worm screw and worm-gear drive, the measurement of equal error separately, the composition error that only can reflect the transmission of common cylinder worm gear pairs, individual error can not be reflected, more the measurement that the plane-generated double enveloping hourglass worm is paid the composition error and the individual error of transmission can not be carried out.

Sign in above reason, the purpose of this utility model is can measure in the circulation conveniently at one in order to provide a kind of, accurately, promptly measures the plane-generated double enveloping arc and the composition error that screw rod is paid and the plane-generated double enveloping cambered surface screw rod of individual error are paid measuring machine.

The utility model comprises motor, the gear train that is connected with motor, lathe bed, place the screw rod main drive shaft slide on the guide rail (4) of lathe bed respectively, worm screw driven shaft slide, be arranged at the screw rod main shaft that is connected with gear train on the worm screw main drive shaft slide, be arranged at the worm screw driven shaft on the worm screw driven shaft slide, place the slide on the bed ways (9), the main shaft that cooperates with the slide rolling, be loaded on the round grating angle displacement sensor (12) on the worm screw driven shaft, be loaded on the round grating angle displacement sensor (13) on the main shaft, respectively with circle grating angle displacement sensor (12,13) signal processing apparatus of Lian Jieing, the computing machine that is connected with signal processing apparatus, the plotting apparatus that is connected with computing machine is (referring to Fig. 1-Fig. 4), when utilizing the utility model to measure the Worm screw and worm-gear drive error, worm gear (or full-height tooth gauge head) is placed on the main shaft, tested worm screw is installed on worm screw main drive shaft and the worm screw driven shaft and meshes with worm gear (or full-height tooth), the power that motor spreads out of passes to the tested worm screw rotation of drive on the worm screw main drive shaft and drives worm gear (or full-height tooth) and the main shaft transmission thereupon that is engaged with through gear train, the driving error of tested worm gear (or the accurate tooth of bar) and tested worm screw is through circle grating angle displacement sensor (12,13) gather after signal processing apparatus and Computer Processing error information and figure are exported and shown on plotting apparatus, measure accurately, rapidly.

Because it is the plane-generated double enveloping cambered surface that tested screw rod is paid, so require the line at the cambered surface center of the centre of gyration of tested worm gear and tested screw rod should be perpendicular with tested screw rod axis of rotation, in order to satisfy this requirement better, on lathe bed, be provided with the guide rail (34) parallel with driven shaft central axis line with the main drive shaft central axis, worm screw is to center fixture, worm screw comprises the slide that places on the guide rail (34) to center fixture, be connected and mobile gliding mass with holes with slide top, the reed seat is housed on the gliding mass inwall, spring leaf one end is contained on the reed seat, one end is housed on gliding mass to be stretched in the gliding mass hole and that can contact with spring leaf and the other end stretches out the gauge head outside the hole, on the gliding mass with on the spring leaf other end relative position table hole is being arranged, the table bar of meter passes the flat gauge head of showing the hole and being contained on the slide and on it and can contact with gauge head, on guide rail (34), be positioned at the slide symmetria bilateralis and be provided with the slip gauge seat (referring to Fig. 5, Fig. 6), slide can move along guide rail (34) direction, between slip gauge seat and slide, adorn slip gauge, so there is length standard can accurately measure the big displacement of slide, when the contact on the gauge head touches any one of tested worm screw two symmetrical reference fields, because the effect of spring leaf makes meter can experience the exact position of the reference field of tested worm screw, again because the distance between the two symmetrical reference fields of tested worm screw is known, so move worm screw main drive shaft slide and the worm screw driven shaft slide of the tested worm screw of supporting, utilize length standard and meter just can accurately find the cambered surface center of tested worm screw, make the centre of gyration of worm gear and the cambered surface central vertical of tested worm screw.

In order to regulate the upper-lower position of worm gear on main shaft better, the larynx of worm gear is overlapped with the central cross-section of worm screw through the position, in the utility model, be provided with elevating mechanism, elevating mechanism comprises the chassis that can be connected with main shaft by set screw, take over a business, be loaded on the chassis and take over a business between wedge assembly, the support column that places, pass support column successively and take over a business with the chassis on the hole and be connected pull bar (referring to Figure 10) on the main shaft.

Top shoe, an end on the inclined-plane that above-mentioned wedge assembly comprises framework, places the sliding block on the with holes and inclined-plane on the framework, band cooperates with the sliding block ramp are through in the sliding block hole and the screw mandrel that is threaded (referring to Figure 10), rotary screw rod, just scalable places the upper-lower position of worm gear on the main shaft.

Individual error such as the helix error of sliding amount worm screw, parted hair error etc., needing a full-height tooth is engaged with, processing and forming principle according to the plane-generated double enveloping hourglass worm, need the full-height tooth centre of gyration is departed from the centre of gyration one segment distance, this distance i.e. main base radius, need in addition pitch angle of full-height tooth deflection--female plane camber angle, in order to reach this purpose, in the utility model, be provided with worm screw single error measurement mechanism, this device comprises the pedestal that places on the main shaft, the guide holder that is connected with pedestal, the bearing that places on the guide holder and can move on guide holder is provided with the survey seat of being with measured hole on the top of bearing, the rotating shaft that cooperates with the hole is arranged in measured hole, full-height tooth plane gauge head is arranged on the rotating shaft front end, and the two ends that are positioned at guide holder on pedestal are equipped with the slip gauge seat respectively (referring to Fig. 7, Fig. 8), cushion block is advised the main base radius that just can find out tested worm screw between slip gauge seat and guide holder, rotating shaft just can be found out female plane camber angle.

In above-mentioned worm screw single error measurement mechanism, on the rear end of measured hole is stretched out in rotating shaft, fork is housed, long slip gauge seat (referring to Fig. 8, Fig. 9) is arranged on bearing and fork relative position, according to the sine protractor principle of work, utilize length standard between fork and long slip gauge seat, just can accurately take out of female plane camber angle of full-height tooth by the quantity cushion block rule that calculate through calculating.

The utility model can system and provide the plane-generated double enveloping hourglass worm to pay the control information of transmission all sidedly, accurate error information and graph of errors are provided, for the improvement of industrial analysis and process equipment provides theoretical foundation, help improving the production efficiency and the crudy of Worm screw and worm-gear drive.Conveniently, accurately, promptly measure composition error and the individual error that the plane-generated double enveloping hourglass worm is paid.Utilize the utility model also can accurately, promptly measure single top error that normal cylindrical worm gear is paid.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing:

Fig. 1: the utility model schematic diagram

Fig. 2: the utility model structural representation

The vertical view of Fig. 3: Fig. 2

The left view of Fig. 4: Fig. 2

Fig. 5: worm screw is to center fixture embodiment figure

Fig. 6: A-A cut-open view among Fig. 5

Fig. 7: worm screw single error measurement mechanism synoptic diagram

Fig. 8: B-B cut-open view among Fig. 7

Fig. 9: C is to view among Fig. 8

Figure 10: main shaft, elevating mechanism structural representation

Figure 11: the plane-generated double enveloping hourglass worm is paid the process of measurement block diagram of measuring machine

Embodiment 1: Fig. 1 has provided general principles figure of the present utility model.Fig. 2-Fig. 4 has provided the enforcement illustration of the utility model mechanical part.The utility model comprises motor 1, the gear train 2 that is connected with motor 1, lathe bed 3, place the worm screw main drive shaft slide 5 on the guide rail 4 of lathe bed 3 respectively, worm screw driven shaft slide 6, be arranged on the worm screw main drive shaft slide 5 and the worm screw main shaft 7 that is connected with gear train 2, be arranged at the worm screw driven shaft 8 in the worm screw driven shaft slide 6, place the slide 10 on lathe bed 3 guide rails 9, the main shaft 11 that cooperates with slide 10 rollings, be loaded on the round grating angle displacement sensor 12 on the worm screw driven shaft 8, be loaded on the round grating angle displacement sensor 13 on the main shaft 11, respectively with circle grating angle displacement sensor 12,13 signal processing apparatus 14 that connect, the computing machine 15 that is connected with signal processing apparatus, the polychrome data plotter 16 that is connected with computing machine 15.Be positioned at lathe bed 3 and be provided with digital display panel 17 on the slide 10.Indication grating 19 in the long grating sensor 18 is contained in that key light grid 20 are contained on the lathe bed 3 on the slide 10.

Figure 10 has provided main shaft, the structural representation of elevating mechanism.Elevating mechanism 21 comprises the chassis 23 that is connected with main shaft 11 by set screw 22, takes over a business 24, places chassis 23, takes over a business 24 wedge assembly 25, and takes over a business 24 support columns that are threaded 26.There is through hole 27 at 23 middle part on the chassis, and the locating piece with threaded hole 28 that is threaded on the main shaft 11 is arranged in the through hole 27.Pull bar 29 passes support column 26 successively, take over a business 24, chassis 23 and with it locating piece 28 be threaded.Have with holes on the framework 64 of wedge assembly 25 and sliding block 30 inclined-plane, the top shoe 31 on the inclined-plane that band cooperates with sliding block 30 inclined-planes, screw mandrel 32 pass framework 64 and are threaded on the sliding block 30 with top shoe 31 formed holes.During work, rotary screw 32 just can be regulated chassis 23 and take over a business 24 distance.

Fig. 5, Fig. 6 have provided the enforcement illustration of screw rod to center fixture 33.On lathe bed 3, be provided with and screw rod main drive shaft axis and the parallel guide rail 34 of screw rod driven shaft axis line.Screw rod comprises the slide 35 that places on the guide rail 34 to center fixture 33.Slide 35 comprises guide plate 36 and the supporting base 37 that is threaded with guide plate 36, between the space of 34 on guide plate 36 and guide rail panel 38 is housed, and locking knob 39 can be fixed tightly in slide 35 on the guide rail 35.Gear 40 is housed on the supporting base 37.On the gliding mass 41 with holes tooth bar 42 is housed.Tooth bar 42 moves gliding mass 41 with holes with gear 40 engagements on supporting base 37.On gliding mass 41 inwalls reed seat 43 is housed, an end of spring leaf 44 is fastened on the reed seat 43 by screw.On gliding mass 41 1 ends with two little top 45 be fastened with an end stretch in the hole and can contact with spring leaf 44 and the other end stretches out the gauge head 46 outside the hole.On gliding mass 41 outer walls and spring leaf 44 other end relative positions, gauge stand 47 is housed.Table hole 48 is arranged on gliding mass 41 and gauge stand 47.The table bar of dial gauge 49 pass table hole 48 and be contained on the gauge stand 47 and its table on flat gauge head can contact with gauge head 46.The symmetria bilateralis that is positioned at slide 35 on guide rail 34 is provided with slip gauge seat 50.

When measuring the composition error of Worm screw and worm-gear drive, elevating mechanism 21 is arranged on the main shaft 11, loads onto worm gear then.Tested worm screw is contained on worm screw main shaft 7 and the worm screw driven shaft 8.Utilize worm screw just can accurately measure the big displacement of slide 33 to slip gauge seat 35 on the center fixture 21 and slip gauge.When gauge head 46 touches any one of tested worm screw two symmetrical reference fields, because the effect of spring leaf 44 makes dial gauge 49 can experience the exact position of tested worm screw, so utilize length standard and dial gauge 49 just can find the cambered surface center of tested worm screw, make it vertical with tested worm axis with the tested worm gear line of centres.This moment, tested worm screw was in the tram.Adopt the long grating sensor of installing on slide 10 and the lathe bed 3 18, moving sliding base 10 can utilize the center on elevating mechanism 21 its vertical planes of adjustment again by theoretical center according to tested worm gear and tested worm mesh.During work, motor 1 drives screw rod main shaft 7 by gear train 2 and rotates, and rotates thereby drive tested worm screw, and worm screw driven shaft 8 also rotates thereupon synchronously.Meanwhile because tested worm gear pairs is in engagement, rotate so tested worm screw drives tested worm gear, main shaft 11 also rotates synchronously with tested worm gear.Circle grating angle displacement sensor 12,13 becomes light signal with the angle of revolution of tested worm screw and tested worm gear respectively, and light signal becomes electric signal again, delivers to signal processing apparatus 14 then, becomes electric impulse signal through amplification, shaping, is fed to computing machine 15 again.Two grating angle displacement sensors 12,13 all have other reference position of branch, and the grating revolution sends a zero signal.When circle grating angle displacement sensor 12 sends zero signal, computing machine 15 promptly begins sampling, pass through calculation control, tested worm screw turns around, sampling promptly finishes, the result of the kinematic error in the time of can obtaining the engagement of tested worm and wormwheel by computing machine 15 data processing, promptly tangential composition error and tangential adjacent teeth composition error are after the painted engagement and can be observed the situation of contact (area) pattern.Last error information and figure are by multicolor digital plotter 16 outputs.

Embodiment 2: embodiment 2 is substantially the same manner as Example 1, and not existing together is no elevating mechanism 21 on main shaft 11, but is provided with worm screw single error measurement mechanism 51.Fig. 7, Fig. 8, Fig. 9 promptly are the enforcement illustrations of worm screw single error measurement mechanism 51.Worm screw single error measurement mechanism 51 comprises the pedestal 52 that places on the main shaft 11, the guide holder 53 that is connected with pedestal 52.Tooth bar 54 is arranged on the guide holder 53.Bearing 55 is provided with and tooth bar 54 meshed gears 56.Bearing 55 places on the guide holder 53 and can move on guide holder 53 by the meshed gears tooth bar.The survey seat 58 that affixed with it band shaft hole 57 is arranged above bearing 55, rotating shaft 59 are contained in the shaft hole 57 and with shaft hole 57 and cooperate, and it stretches out, and available screw connects flat gauge head 60 on the front end of shaft hole 57, and it stretches out on the rear end of shaft hole 57 fork 61 is housed.Rear portion and fork 61 relative positions at bearing 55 tighten intrinsic long slip gauge seat 62.The symmetria bilateralis that is positioned at guide holder 53 on pedestal 52 is equipped with slip gauge seat 63.Flat gauge head 60 can move forward and backward along guide holder 53 with bearing 55, utilizes the length standard (as slip gauge etc.) can be with the parameter of tested worm screw--and main base radius is set up.Flat gauge head 60 can swing along axis with rotating shaft 59.Utilize length pedestal (as slip gauge etc.) can find out another parameter--female plane camber angle of tested worm screw.Measure single top error such as helix error, parted hair error, circular pitch error etc., mix up the angle and the offset distance of flat gauge head by the parameter of tested worm screw, and full-height tooth (flat gauge head 59) pressed on the centre distance and tested worm mesh of worm gear pairs, start motor 1, flat gauge head 60 is moved on to the starting point of helix, round grating angle displacement sensor 12 is set and remains unchanged, flat gauge head 60 is moved past zero-bit (starting point).Start motor 1, the flat gauge head 60(full-height tooth that is engaged with is rotated and driven to tested worm screw), thus main shaft 11 rotates.When circle grating angle displacement sensor 13 zero-bits, begin sampling, after helix has been surveyed, promptly stop to measure.Change one and measure again, surveyed up to all each.The variation of tested worm screw and full-height tooth corner will be sent signal by circle grating angle displacement sensor 12,13 and be delivered to computing machine 15 by signal processing apparatus 14, thus computing machine 15 detect two angular errors and carry out data processing obtain the helix error, separately the data of error, circumferential teeth knee error and they separately curve and on plotting apparatus 16, show.

Claims (6)

1, a kind of plane-generated double enveloping hourglass worm is paid measuring machine, comprise round grating angle displacement sensor (12,13), respectively with circle grating angle displacement sensor (12,13) signal processing apparatus of Lian Jieing (14), the computing machine (15) that is connected with signal processing apparatus (14), the plotting apparatus (16) that is connected with computing machine (15), it is characterized in that described measuring machine also comprises motor (1), the gear train (2) that is connected with motor (1), lathe bed (3), place the worm screw main drive shaft slide (5) on the guide rail (4) of lathe bed (3) respectively, worm screw driven shaft slide (6) is arranged in the worm screw main drive shaft slide (5) and the worm screw main shaft (7) that is connected with gear train (2), is arranged at the worm screw driven shaft (8) in the worm screw driven shaft slide (6), place the slide (10) on lathe bed (3) middle guide (9), with the main shaft (11) that slide (10) rolls and cooperates, circle grating angle displacement sensor (12) is contained on the worm screw driven shaft (8), and circle grating angle displacement sensor (13) is contained on the main shaft (11).

2, plane-generated double enveloping hourglass worm as claimed in claim 1 is paid measuring machine, it is characterized in that being provided with on the described lathe bed (3) guide rail (34) parallel with worm screw driven shaft axis line with worm screw main drive shaft axis, worm screw is to center fixture (33), worm screw comprises the slide (35) that places on the guide rail (34) to center fixture (33), gliding mass with holes (41) places on the slide (35) and can slide, on gliding mass (41) inwall, reed seat (43) is arranged, one end of spring leaf (44) is fastened on the reed seat (43), on gliding mass (41), be equipped with an end stretch in the gliding mass hole and can contact with spring leaf (44) and the other end stretches out the gauge head (46) outside the hole, upward and on spring leaf (44) other end relative position table hole (48) is arranged at gliding mass (41), the table bar of meter (49) passes table hole (48) and is contained in gliding mass (41) on and flat gauge head that it is shown can contact with gauge head (46), and the symmetria bilateralis that is positioned at slide (35) on guide rail (34) is provided with slip gauge seat (50).

3, plane-generated double enveloping hourglass worm as claimed in claim 1 or 2 is paid measuring machine, it is characterized in that being provided with in the described measuring machine elevating mechanism (21), elevating mechanism (21) comprises the chassis (23) that is connected with main shaft (11) by set screw (22), pre-dish (24), be loaded on chassis (23) and take over a business wedge assembly (25) between (24), place support column (26) on (24), pass support column (26) successively and take over a business (24) and chassis (23) on the hole be connected pull bar (30) on the main shaft (11).

4, plane-generated double enveloping hourglass worm as claimed in claim 3 is paid measuring machine, it is characterized in that described wedge assembly (25) comprises framework (64), places the sliding block (31) of the with holes and Dou face on the framework (64), the top shoe (32) on inclined-plane that band cooperates with sliding block (31) ramp, screw mandrel (33) passes framework (64) and is threaded on the sliding block (31) with the formed hole of top shoe (32).

5, plane-generated double enveloping hourglass worm as claimed in claim 1 is paid measuring machine, it is characterized in that being provided with in the described measuring machine worm screw single error measurement mechanism (51), worm screw single error measurement mechanism (51) comprises the pedestal (52) that places on the main shaft (11), the guide holder (53) that is connected with pedestal (52), the bearing (55) that is connected and can contains the survey seat (58) of axis hole (57) with guide holder (53) at the band that guide holder (53) upward moves, rotating shaft (59) is contained in the shaft hole (57) and with shaft hole (57) and cooperates, it stretches out on the front end of shaft hole (57) the flat gauge head of full-height tooth (60), and slip gauge seat (63) is equipped with at the two ends that are positioned at bearing (55) on pedestal (52) respectively.

6, plane-generated double enveloping hourglass worm as claimed in claim 5 is paid measuring machine, it is characterized in that described rotating shaft (59) is stretched out is equipped with fork (61) on the rear end of shaft hole (57), bearing (55) go up and fork (61) relative position on long slip gauge seat (62) is arranged.

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