CN101059337A - Digital type rotary support raceway diameter detection device - Google Patents

Abstract

The invention provides a digit rotary support track diameter measuring device, belonging to the industrial measurement technical field, wherein the measuring device is composed of a base, a torque motor, a screw pair, a limiting block, a grating, a measuring head, a track, a display, a controller and connecting wires. The measuring head is a contact measuring head composed of a steel ball (1), a steel ball (2) and a steel ball (3), while the steel balls (1, 2) are connected to be a fixed end, and the steel ball (3) is connected with a movable end. Two ends of a movable couple driven by the torque motor are respectively connected with the fixed end and the movable end. The measuring device can reduce the effect of traditional measuring and comparison measuring errors on the result, and drive the movable couple via the torque motor to improve the stability of measuring force, display accurately and reliably, avoid mistake caused by artificial rule or the like. And the invention has simple operation and accurate measured result.

Description

Digital type rotary support raceway diameter detection device

Technical field

The invention belongs to the commercial measurement technical field, be specifically related to digital type rotary support raceway diameter detection device, be used to detect the diameter dimension of the outer raceway of raceway in the large-size pivoting support outer ring and inner ring.

Background technology

The measurement of large-size pivoting support raceway diameter is a great problem of puzzlement industry always.Since often little to the demand of same specification product, and the tolerance clearance between Internal and external cycle and the roller is strict, so high especially to detecting requirement.

The current implementing scheme mostly adopts the measurement rod that raceway diameter inside and outside the pivoting support is detected.Measure an excellent end and fix, an end moves, and movable part connects a dial gauge, and by spring reset, two ends contact with raceway by steel ball.Before the measurement, measure rod and vernier caliper comparison, determine to measure excellent form dimension, detect raceway with measuring rod again, measure the algebraic difference of raceway size and this form dimension by dial gauge, this algebraic difference and form dimension sum are tested raceway size.

By above-mentioned detection method as can be known, there is following drawback in current programme, causes measuring error bigger:

1, because the vernier caliper precision of measurement rod setting is on the low side, directly influences the accuracy of detection of raceway diameter;

2, measuring one's own ability is to be obtained by length of spring compressed, because the inconsistency of size, ergometry is also different, thereby causes because of the different measuring error that cause of ergometry;

3, because measured size is inside and outside raceway diameter, measure rod after comparison on the vernier caliper, often need dial gauge is taken off, avoid damaging owing to the not enough dial gauge that causes of stroke of dial gauge.By the time measuring rod enters after the measured workpiece detection position, loads onto dial gauge again and detects.Twice dial gauge is installed and is caused measuring error equally.

Summary of the invention

Above problems at the prior art existence, the invention provides a kind of digital type rotary support raceway diameter detection device, the technical scheme that this pick-up unit is taked directly demonstrates the data that detect for adopting 3 contact measuring methods and utilizing grating to detect by display.

Digital type rotary support raceway diameter detection device structure provided by the present invention is made up of support, torque motor, screw pair, limited block, grating, gauge head (steel ball), guide rail, display, controller and line.The pick-up unit schematic diagram of mechanism as shown in Figure 1, mechanism is composed as follows: connect the stiff end of two steel balls 1,2, the distance between center of circle A, the B of steel ball 1,2 is a; The mobile terminal that connects a steel ball 3, the vertical range b of center of circle C to the AB line of steel ball 3 is detected by grating and obtains; A moving sets that drives with torque motor, the moving sets two ends connect the stiff end at steel ball 1,2 places and the mobile terminal at steel ball 3 places respectively, and stiff end and mobile terminal steel ball 1,2,3 are all replaceable, to adapt to different raceway arc diameters.Moving sets is driven by a torque motor, directly changes the distance between stiff end and mobile terminal, to satisfy the requirement of measuring different rotary support raceway diameters, simultaneously, torque motor is transferred to given moment, thereby obtains suitable ergometry.3 contact measurement schemes, the automatic location that can realize appliance.

During raceway, the outside of steel ball contacts with raceway in detecting the pivoting support outer ring; Can get rotary support raceway diameter by calculating, its result is directly shown by display.

During raceway, the inboard of steel ball contacts with raceway outside detecting the pivoting support inner ring; Can get rotary support raceway diameter by calculating, its result is directly shown by display.

This pick-up unit reduces traditional detection, twice measuring error of comparison adds up the influence to the result, and adopts torque motor to drive to increase the stability of ergometry to moving sets.Show accurately and reliably, avoid the contingent errors of instrument such as manual read's card taking chi.Simple to operate, testing result is accurate.

Description of drawings

Fig. 1: raceway apparatus for detecting diameter structural representation in the digital pivoting support

Fig. 2: raceway apparatus for detecting diameter measuring principle figure in the digital pivoting support

Fig. 3: the outer raceway apparatus for detecting diameter structural representation of digital pivoting support

Fig. 4: the outer raceway apparatus for detecting diameter measuring principle figure of digital pivoting support

Among the figure: 1: steel ball, 2: steel ball, 3: steel ball

Embodiment

Embodiment 1: digital type rotary support raceway diameter detection device is made up of stiff end, mobile terminal, grating, torque motor, motion controller, display etc.Stiff end connects two removable steel balls, and to adapt to different raceway arc diameters, the distance between steel ball center of circle A, the B is a, obtains through demarcating.The mobile terminal connects a removable steel ball, adapts to the requirement of different raceway arc diameter equally, and the vertical range b of steel ball center of circle C to AB line detects data by grating and obtains.Moving sets is driven by a torque motor.

During raceway, the inboard of steel ball contacts (as shown in Figure 1, 2) with raceway outside detecting the pivoting support inner ring; Can get rotary support raceway diameter by calculating.

Elder generation is according to the suitable steel ball of the size Selection of survey object during detection.Place stiff end earlier, adjust the mobile terminal with motor-driven.Torque motor on the moving sets drives the mobile terminal moving linearly, guarantees that the mobile terminal is along move the automatic location of realization appliance perpendicular to steel ball center of circle A, B (stiff end) line direction.Directly measure the b value with pick-up unit.System carries out data processing to a, b value and exports the actual, measured dimension of the pivoting support raceway of surveying by display.

By shown in Figure 2, the raceway diameter center of circle is 0, as seen from the figure:

$\mathrm{tg\α}=\frac{a}{2b}$

$\mathrm{\α}=\mathrm{arctg}\frac{a}{2b}$

β＝2α

$\mathrm{OB}=\frac{a}{2\sin \mathrm{\&beta;}}=\frac{a}{2\mathrm{<figure-callout\; id="2"\; label="sin"\; filenames="A20071002302600062.png"\; state="\{\{state\}\}">sin</figure-callout>}2\mathrm{\&alpha;}}$

The outer raceway radius of pivoting support inner ring:

$R=\mathrm{OB}+r=\frac{a}{2\mathrm{<figure-callout\; id="2"\; label="sin"\; filenames="A20071002302600062.png"\; state="\{\{state\}\}">sin</figure-callout>}2\mathrm{\&alpha;}}+r=\frac{a(1+{\mathrm{<figure-callout\; id="2"\; label="tg"\; filenames="A20071002302600062.png"\; state="\{\{state\}\}">tg</figure-callout>}}^2\mathrm{\&alpha;})}{4\mathrm{tg\&alpha;}}+r=\frac{b}{2}[1+{\left(\frac{a}{2b}\right)}^2]+r$

R: the radius of steel ball 1,2,3

Annotate: these calculate the direct output of being finished and realized the R value by system automatically.

Embodiment 2: digital type rotary support raceway diameter detection device is made up of stiff end, mobile terminal, grating, torque motor, motion controller, display etc.Stiff end connects two removable steel balls, and to adapt to different raceway arc diameters, the distance between steel ball center of circle A, the B is a, obtains through demarcating.The mobile terminal connects a removable steel ball, adapts to the requirement of different raceway arc diameter equally, and the vertical range b of steel ball center of circle C to AB line detects data by grating and obtains.Moving sets is driven by a torque motor.

During raceway, the outside of steel ball contacts (shown in Fig. 3,4) with raceway in detecting the pivoting support outer ring.Can get rotary support raceway diameter by calculating.

Elder generation is according to the suitable steel ball of the size Selection of survey object during detection.Place stiff end earlier, adjust the mobile terminal with motor-driven.Torque motor on the moving sets drives ball guide screw nat (moving sets) moving linearly, guarantees that the mobile terminal is along move the automatic location of realization appliance perpendicular to steel ball center of circle A, B (stiff end) line direction.Detect the b value with the grating pick-up unit.System carries out data processing and exports the data of asking by display a, b value.

Raceway Diameter Calculation in the pivoting support outer ring

By shown in Figure 4, the raceway diameter center of circle is 0, as seen from the figure:

$\mathrm{tg\&alpha;}=\frac{a}{2b}$

$\mathrm{\&alpha;}=\mathrm{arctg}\frac{a}{2b}$

β＝2α

$\mathrm{OB}=\frac{a}{2\sin \mathrm{\&beta;}}=\frac{a}{2\mathrm{<figure-callout\; id="2"\; label="sin"\; filenames="A20071002302600062.png"\; state="\{\{state\}\}">sin</figure-callout>}2\mathrm{\&alpha;}}$

Raceway radius in the pivoting support outer ring:

$R=\mathrm{OB}-r=\frac{a}{2\mathrm{<figure-callout\; id="2"\; label="sin"\; filenames="A20071002302600062.png"\; state="\{\{state\}\}">sin</figure-callout>}2\mathrm{\&alpha;}}-r=\frac{a(1+{\mathrm{<figure-callout\; id="2"\; label="tg"\; filenames="A20071002302600062.png"\; state="\{\{state\}\}">tg</figure-callout>}}^2\mathrm{\&alpha;})}{4\mathrm{tg\&alpha;}}-r=\frac{b}{2}[1+{\left(\frac{a}{2b}\right)}^2]-r$

R: the radius of steel ball 1,2,3

Claims (5)

1, digital type rotary support raceway diameter detection device, it is characterized in that this pick-up unit is made up of support, torque motor, screw pair, limited block, grating, gauge head, guide rail, display, controller and line, the contact measuring head formed by steel ball (1), steel ball (2), steel ball (3) of gauge head wherein, the stiff end that connects two steel balls (1), steel ball (2) formation, the mobile terminal that connects a steel ball (3), the moving sets two ends that drive with torque motor connect the stiff end at steel ball (1), steel ball (2) place and the mobile terminal at steel ball (3) place respectively.

2, digital type rotary support raceway diameter detection device according to claim 1, it is characterized in that stiff end connects two removable steel balls (1), steel ball (2), to adapt to different raceway arc diameters, the distance between steel ball center of circle A, the B is that a obtains through demarcating, and is definite value.

3, digital type rotary support raceway diameter detection device according to claim 1, it is characterized in that the mobile terminal connects a removable steel ball (3), the requirement of the different raceway arc diameter of same adaptation, the vertical range b of steel ball center of circle C to AB line is detected by grating and obtains.

4, digital type rotary support raceway diameter detection device according to claim 1, it is characterized in that moving sets is wherein driven by a torque motor, moving sets directly changes the distance between stiff end and mobile terminal, to satisfy the requirement of measuring different rotary support raceway diameters, simultaneously, torque motor is transferred to given moment, thereby obtains suitable ergometry.

5, digital type rotary support raceway diameter detection device according to claim 1, it is characterized in that 3 contact measurement schemes being formed by its stiff end steel ball (1), steel ball (2) and mobile terminal steel ball (3), drive mobile terminal steel ball moving linearly by the controller drives torque motor, realize the automatic location of appliance.

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