CN2457594Y

CN2457594Y - Spring torque tester

Info

Publication number: CN2457594Y
Application number: CN 00259938
Authority: CN
Inventors: 周伟; 张良
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-12-21
Filing date: 2000-12-21
Publication date: 2001-10-31
Anticipated expiration: 2010-12-21

Abstract

The utility model provides a spring torque tester, mainly composed of a machine base, a feed device, a loading mechanism and a microcomputer data processing device. The spring torque tester is characterized in that the spring torque tester is also provided with a dynamometric plate of a torque sensor arranged on a support base at one side of the machine base. A thrust plate provided with an angle sensor is arranged on a slide base at the other side. The slide base is driven by the feed device, and a core shaft is inserted in the thrust plate and is driven by the loading mechanism. The two sensors and the input interface of the microcomputer are electrically connected through transmission lines. The utility model has the advantages of high measuring precision and wide measuring limit. The torques of the torsion springs and scroll springs of various shapes can be directly measured, various parameters and dynamic curves can be visually displayed, and measuring results can be printed and output.

Description

The spring torque testing machine

The utility model relates to surveying instrument, specifically a kind of spring torque testing machine that is used to measure various torque springs, scroll spring (clockwork spring) and other elastic torsion spare characterisitic parameter.

Along with development of modern industry, the application of various springs and elastic torsion spare is very extensive, requirement to spring and the every characteristic of elastic torsion spare is more and more higher, accurate further to measuring requirement simultaneously, particularly require strict more to spring and the every characteristic of elastic torsion spare in precision optical machinery, instrument and meter industry.Traditional measuring method such as stem-winder disc type measuring instrument, powerless to dynamic demonstration measurement parameter, the family curve of output measured piece, the statistical study of measurement data etc., thereby can not satisfy the accurate measurement requirement that modern production proposes elastic torsion spare.

The purpose of this utility model just provide a kind of can accurately measure variously turn round, whirlpool spring and the every characterisitic parameter of other elastic torsion spare, and can in measuring process, dynamically show every characterisitic parameter and dynamic characteristic, with the spring torque testing machine of measurement result printout.

In order to achieve the above object, the technical scheme that the utility model is taked is: this spring torque testing machine comprises support, bearing, slide, feed arrangement, load maintainer and single-chip data treating apparatus, it is characterized in that, it also comprises: a dynamometry dish that has torque sensor, be installed on the bearing of support one side, a thrust disc that has angular transducer is installed on the slide of opposite side, dynamometry dish and thrust disc are towards relative, but slide drives move left and right by feed arrangement, thrust disc leaves central shaft hole, insert mandrel and be assembled into one, drive by load maintainer, can do arbitrarily angled rotatablely moving, two sensors is electrically connected by transfer wire with the single-chip data input interface.

Dynamometry dish and thrust disc are symmetrical, are rectangle, and the front has chute, and the groove upper side is carved with scale, and slide block is housed in the groove, dress dynamometry pin and dog screw on the slide block, and be carved with groove.

On the slide block of dynamometry dish and thrust disc, tangent plane installs one group of additional symmetrical Moving plate, and Moving plate also is a rectangle, and the front also has chute, the groove side is carved with scale, dress Moving plate slide block in the groove, dress dynamometry pin and dog screw on the slide block, and be carved with groove, the slide block of mobile Moving plate, the dynamometry pin can be done tangential motion thereupon, moves the slide block of survey, thrust disc, and the dynamometry pin can be done radial motion thereupon.

The utility model has the advantages that: 1, can directly test the torsion spring of different shape, the moment of torsion of scrollwork spring, adaptability is strong.2, range ability is big, test specification 0.01N.mm～200N.m; The precision height can reach 0.5% of indicating value; The numeral demonstration, accurately directly perceived, stable performance.3, can in measuring process, dynamically show and every characterisitic parameter and dynamic characteristic measurement data is carried out statistical study, and with the measurement result printout.4, adopt omnipotent adjustable disk clamping, need not additional frock clamp, easy to operate.5, the handwheel spiral loads, operate light, load steady, have latching characteristics, and can rest on any test point good reproducibility.

Fig. 1 is the one-piece construction synoptic diagram of this spring torque testing machine.

Fig. 2 is the decomposing schematic representation that sensor and measurement wear mechanism.

Fig. 3 is the synoptic diagram of spring clamping.

Fig. 4 is the profile synoptic diagram of mandrel.

Fig. 5 is a decomposing schematic representation of accurately measuring first orientation angle dynamometry dish and thrust disc.

Below in conjunction with accompanying drawing the utility model is done to describe in further detail.

In Fig. 1, the 2nd, support, requirement can guarantee the structural steel elements of complete machine, and its profile is the rectangular block shape, and four jiaos of legs 1 that adjustable height is housed below the support are used to adjust the level of support.Dynamometric support 3 is equipped with in the left front above the support, the right front is a feed arrangement, be connected (feed arrangement can be rack-and-pinion or leading screw screw mechanism) by feeding handle 8 with slide 5 with a cover pendulum thick stick device, slide 5 is slidingly installed on two parallel round guides 7 that are positioned at above the feeding handle 8, feeding handle 8 promotes slide 5 and slides on guide rail 7, the guide rail two ends be provided with prelocalization ring 6 and back locating ring 6 ', to limit the displacement of slide 5.During measurement, after the adjustment of the position of slide is suitable, tighten locking by lock-screw 9.The 12nd, load handwheel, forward and reverse handwheel that shakes can load and unload, and the maximum that the centring ring 10 on the slide 5 can limit when measuring allows corner, shields in measuring process.The 11st, the dynamometry dish, 11 ' be thrust disc.A cover single-chip data treating apparatus 4 has been installed in the support back upper place, and the signal that is used to gather torque sensor and angular transducer carries out showing measurement result and printout after the data processing.

Fig. 2 is sensor and the decomposing schematic representation of measuring load maintainer.Among the figure, torque sensor 13, the 11 fastening assemblings of dynamometry dish also are assemblied on the Dynamometric support 3 jointly, directly adopt torque sensor and do not adopt other sensor can avoid power to convert in the process of moment of torsion and bring additive error.Dynamometry dish profile is a rectangle pane, have chute (chute can be swallow-tail form, rectangle, circular shaft feather key or spline) on it, upper side along the chute direction is carved with scale 18, slidable fit dynamometry slide block 14 in the chute, groove 17 is carved with in its front, groove cooperates with scale determines the position of dynamometry piece 13 apart from the centre of gyration, and dynamometry pin 15 and lock-screw 16 are housed on the dynamometry piece.The dynamometry piece is used for the tested spring of clamping, adjust the packaged double-layered quilt of dynamometry and survey spring to correct position, lock-screw, can read the distance of dynamometry slide block apart from the dynamometry dish centre of gyration from the scale of dynamometry dish and the groove of corresponding dynamometry slide block, this distance is to calculate the important parameter (computing formula is seen at last) of the first orientation angle of tested spring.

The right opposite of dynamometry dish 11, be with the thrust disc 11 of its structural symmetry ', slidable fit pushing slide block 14 in the chute ', dress thrust pin 15 on the slide block ' and lock-screw 16 ', the same with the dynamometry dish, the chute upside is carved with scale, groove is carved with in the slide block front.During the tested spring of clamping, adjustment thrust block pad 14 ' to correct position, screw lock-screw 16 ', can read the distance of thrust block pad apart from the thrust disc centre of gyration from the scale of thrust disc and the groove of corresponding pushing slide block, this distance also is to calculate the important parameter (computing formula is seen at last) of tested spring.

Worm gear 19 is fastening to be assemblied on the intermediate step axle of worm-wheel shaft 20, snail thick stick axle 21 is with in worm gear 19, worm-wheel shaft 20 cooperate the cavity that is assemblied in slide 5 (Fig. 1), worm-wheel shaft left end and thrust disc 11 ' be fastenedly connected, right-hand member is connected with angular transducer 23 by elasticity shaft coupling 22, is packed in the right side of slide 5 (Fig. 1).Angular transducer can be raster pattern, capacitance-grid type, synchronous induction type or other measurement of angle element, and the two ends that are connected same moment output shaft with thrust disc can make connected mode the simplest, and transmission link brings additive error to measurement of angle in the middle of avoiding.Load handwheel 12 and divide fastening assembling with snail thick stick shaft extension, this worm gear snail thick stick mechanism has characteristics such as reduction gear ratio is big, energy self-locking, and light steady loading in the time of can guaranteeing to measure can rest on any test point.The 24th, mandrel, it passes the center pit of thrust disc, is slidingly matched to insert in the default axis hole of worm-wheel shaft left end, by lock-screw 25 lockings, is used for the centering of clamping spring.

Fig. 3 is the clamping synoptic diagram of spring.(1), the clamping of torsionspring; Use the axle core 24 among Fig. 4, pass the thrust disc center pit, in the axis hole that the insertion worm-wheel shaft 20 that is slidingly matched is preset, tighten screw 25, mandrel is locked, and revealed section is used for along tested spring centering, diameter is looked tested spring center bore dia and is determined approximately little usually 10%.Tested torsion spring 26 is enclosed within on the mandrel, and the dynamometry slide block of adjusting in dynamometry dish 11 chutes 14 rides on the dynamometry pin 15 one leg of tested spring, tightens screw 16 locking dynamometry slide blocks 14; The one leg in addition of adjusting the tested torsion spring 26 of pushing slide block 14 in thrust disc 11 ' chute ' make ride over thrust pin 15 ' on, tighten screw 16 ' locking pushing slide block 14 ', promptly rotatable handwheel loads measurement.(2), the clamping of scrollwork spring: the axle core 24 among use Fig. 4 ', as seen from the figure, its left end has a rectangular channel, the right has keyway, the effect of keyway is can transfer larger torque after screw lock, during clamping, the central segment of tested whirlpool spring is snapped in the rectangular channel of axle head, the outer ring leg hangs on the dynamometry pin 15, and other operation stepss are identical with the survey torsion spring.

When the first orientation angle of tested spring requires when more accurate, can adopt the version of Fig. 5, Fig. 5 accurately measures just the dynamometry dish and the thrust disc of orientation angle.It is in Fig. 2 dynamometry dish 11, thrust disc 11 ' the basis on increase by one group of dynamometry Moving plate and one group of thrust Moving plate, but make on dynamometry pin and the thrust pin geometric position in dish not only horizontal direction move but also but vertical direction moves, thereby the measurement data of orientation angle is more accurate at the beginning of making.From scheming as seen, the front of dynamometry slide block 14 has groove, and dynamometry Moving plate 27 fastening being assemblied in the groove can be with the side-to-side movement of slide block horizontal direction, the 16th, positioning and locking screw; The slide block 28 of dynamometry Moving plate is installed in the chute of dynamometry Moving plate 27, can move up and down along the chute vertical direction, and the 18th, scale, the 17th, scale mark, the 15th, dynamometry pin, the 29th, positioning and locking screw.Identical with the structure and the dynamometry Moving plate of the thrust Moving plate of dynamometry Moving plate opposite face, 27 ' be the thrust Moving plate, 28 ' be thrust Moving plate slide block, 15 ' be thrust pin, 29 ' be the positioning and locking screw, 14 ' be the slide block of thrust disc, 16 ' be the positioning and locking screw, 11 ' be thrust disc.

Torsion spring is location and angle calculation just:

\sin θ = (\frac{d_{1} + D_{1}}{2} + d) / L 1

A) two arm angle=180 °-(θ ₁+ θ ₂)

B) two arm angle=θ ₁+ θ ₂

d ₁-dynamometry pin diameter

d ₂-thrust pin diameter

D ₁-axle diameter

D-spring filament diameter

1. when absolute zero position, its dynamometry pin, thrust pin and central shaft three are on an axis.

2. when actual measurement, two arm angles equal displayed value and add or subtract and go up orientation angle just.

Claims

1, a kind of spring torque testing machine, comprise support, bearing, slide, feed arrangement, load maintainer and single-chip data treating apparatus, it is characterized in that, it also comprises: a dynamometry dish that has torque sensor, be installed on the bearing of support one side, a thrust disc that has angular transducer is installed on the slide of opposite side, dynamometry dish and thrust disc are towards relative, but slide drives move left and right by feed arrangement, thrust disc leaves central shaft hole, inserts mandrel and is assembled into one, is driven by load maintainer, can do arbitrarily angled rotatablely moving, two sensors is electrically connected by transfer wire with the single-chip data input interface.

2, spring torque testing machine according to claim 1, it is characterized in that: dynamometry dish and thrust disc are symmetrical, are rectangle, the front has chute, and the groove upper side is carved with scale, and slide block is housed in the groove, dress dynamometry pin and dog screw on the slide block, and be carved with groove.

3, spring torque testing machine according to claim 1 and 2, it is characterized in that: on the slide block of dynamometry dish and thrust disc, can tangentially respectively install one group of additional symmetrical Moving plate, Moving plate also is a rectangle, the front also has chute, and the groove side is carved with scale, dress Moving plate slide block in the groove, dress dynamometry pin and dog screw on the slide block, and be carved with scale.