CN201427112Y - Pinion and rack type laser-scanning roll ball separating device - Google Patents

Abstract

The utility model discloses a pinion and rack type laser-scanning roll ball separating device. An input rack is mounted in a slide chute at two ends, a pressure sensor is arranged at one end of an input rack, a positioning block is arranged outside the pressure sensor, the other end of the input rack is in contact with a drive rack device, a toothed part of the input rack is engaged with a pinionof a first duplex gear, a gear wheel of the first duplex gear is engaged with a pinion of a second duplex gear, the gear wheel of the second duplex gear is engaged with the output rack, tow ends of the output rack are mounted on another slide chute, a laser is mounted below the output rack, a fixing plate is installed above a side where the laser is also arranged, and a photoelectric detector is laid on the lower surface of a fixing plate. With the principles of the gear transmission and the geometric-similar triangle amplification, the difference of a roll ball in measuring and a referentialroll ball can be amplified; and the measuring precision is high, the separation is correct, the operation is simple and the automation is easily realized. The pinion and rack type laser-scanning rollball separating device is particularly suitable for separating roll balls with smallest difference of diameters in batches.

Description

A kind of device of gear-rack type laser scanning ball-sorting

Technical field

The utility model relates to sorting unit, especially relates to a kind of device of gear-rack type laser scanning ball-sorting.

Background technology

Show that after deliberation the ball diameter in the rolling bearing differs above certain limit, can cause the bearing working fluctuation of service, have a strong impact on the stress distribution of inner each ball, cause this bearing to lose efficacy ahead of time, shorten the fatigue life of rolling bearing.So each rolling bearing production unit requires ball is carried out sorting by diameter.

But at present the mode of manually measuring is one by one still adopted in the sorting of ball, employed instrument remains traditional mechanical measuring device, its certainty of measurement can not be satisfied with the requirement of precise part already, cause certainty of measurement poor, the efficiency of separation is low, has influenced the quality and the production efficiency of rolling bearing.Therefore how guaranteeing the certainty of measurement of ball, realize the quick sorting of ball, improve production efficiency of products, is a problem that urgency is to be solved.

Summary of the invention

The purpose of this utility model is to provide a kind of device of gear-rack type laser scanning ball-sorting, improves the certainty of measurement of ball and the separation velocity of ball, thereby guarantees the assembly quality and the production efficiency of rolling bearing.

The technical solution adopted in the utility model is as follows:

The utility model comprises locating piece, input tooth bar, first duplicate gear, driving gear strip device, second duplicate gear, output tooth bar, laser instrument, photoelectric detector and fixed head; The input tooth bar is installed in the chute at two ends, one end of input tooth bar is provided with pressure sensor, pressure sensor is provided with locating piece outward, the other end of input tooth bar contacts with the driving gear strip device, the pinion that the toothed portion and first duplicate gear are arranged of input tooth bar, the pinion of the gear wheel of first duplicate gear and second duplicate gear, the gear wheel of second duplicate gear and the engagement of output tooth bar, the two ends of output tooth bar are installed in another chute, laser instrument is installed in the below of output tooth bar, fixed head is installed in the top of laser instrument homonymy, and photoelectric detector is tiled in the lower surface of fixed head.

Described locating piece, by forming to the arc groove of input tooth bar outer incline and the baffle plate of a side, the gradient of arc groove is 5 degree～15 degree.

Described driving gear strip device is friction-driven or rack drives.

The beneficial effect that the utlity model has is:

The utility model utilizes the rack-and-pinion amplification principle, has (1) certainty of measurement height; (2) simple to operate; (3) be easy to install, safeguard; (4) measurement category of ball is big, advantages such as easy adjusting.The utility model can be measured the error in geometrical form of ball, is specially adapted to the sorting diameter and differs very little batch ball.

Description of drawings

Fig. 1 is an assembly relation front view of the present utility model.

Fig. 2 is an assembly relation left view of the present utility model.

Fig. 3 is a relatively schematic diagram of measurement of the present utility model.

Fig. 4 is that similar triangles of the present utility model are analyzed enlarged drawing.

Among the figure: 1, locating piece, 2, the input tooth bar, 3, first duplicate gear, 4, the driving gear strip device, 5, second duplicate gear, 6, the output tooth bar, 7, laser instrument, 8, photoelectric detector, 9, fixed head.

The specific embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

As shown in Figure 1 and Figure 2, the utility model comprises locating piece 1, input tooth bar 2, first duplicate gear 3, driving gear strip device 4, second duplicate gear 5, output tooth bar 6, laser instrument 7, photoelectric detector 8 and fixed head 9; Input tooth bar 2 is installed in the chute at two ends, one end of input tooth bar 2 is provided with pressure sensor, pressure sensor is provided with locating piece 1 outward, the other end of input tooth bar 2 contacts with driving gear strip device 4, the pinion that the toothed portion and first duplicate gear 3 are arranged of input tooth bar 2, the pinion of the gear wheel of first duplicate gear 3 and second duplicate gear 5, the gear wheel of second duplicate gear 5 and 6 engagements of output tooth bar, the two ends of output tooth bar 6 are installed in another chute, laser instrument 7 is installed in the below of output tooth bar 6, fixed head 9 is installed in the top of laser instrument 7 homonymies, and photoelectric detector 8 is tiled in the lower surface of fixed head 9.

Described locating piece 1, by forming to the arc groove of input tooth bar 2 outer inclines and the baffle plate of a side, the gradient of arc groove is 5 degree～15 degree.

Described driving gear strip device 4 is friction-driven or rack drives.

The utility model is main in conjunction with machinery, electronics, optics and information technology, and utilization gear drive and geometric similarity triangle principle are amplified processing, reach high-acruracy survey, realize automation easily, has improved product and has detected the quality and the efficiency of separation.

Concrete operation principle and process are as follows:

At first (shown in Fig. 3 solid line circle, diameter is D the standard ball through high-acruracy survey ₀) be placed on the locating piece 1 and position, send instruction by controller to drive gear arrangement 4 again, input tooth bar 2 is slowly moved to the right, first duplicate gear 3 is rotated counterclockwise simultaneously, and second duplicate gear 5 turns clockwise and drives output tooth bar 6 and is moved to the left.The moment that touches this ball when the pressure sensor of front end issues a signal to controller immediately, sends signal command drive gear arrangement 4 by controller at once and stops at once moving, and make laser instrument 7 begin to be rotated counterclockwise.At the beginning, laser is output gear 6 and blocks, can't be mapped on the photoelectric detector 8, when rotating to certain angle, when just in time being received by photoelectric detector 8, this detector sends instruction at once by controller and makes laser instrument 7 stop operating and keep in the center immediately to controller transmission information, makes gear device 4 allow each mechanical part keep in the center simultaneously.In this process, controller has determined that by this acceptance point is sampled the pairing laser of diameter of this standard ball is mapped to the particular location of photoelectric detector 8, is decided to be datum mark, as A point among Fig. 4.

Then (shown in Fig. 3 broken circle, diameter is D with ball to be measured ₁) be placed in same position and position, adopt identical process that the point of laser directive photoelectric detector 8 is carried out sampling processing, be designated as sampled point, as the point of the B among Fig. 4.

Calculate the distance of this sampled point B and datum mark A by the message handler in the controller, again in conjunction with the magnification ratio of setting in advance carry out difference calculate (sampled point in datum mark left side time difference value for negative, during the right side for just), finally show the diameter D of ball that this time surveyed by display screen ₁

Concrete amplification process is as follows:

By the gear drive multiplication factor $K_{}$ ${}_1=\frac{Z_2}{{\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="Y2009201203670007H1.png,Y2009201203670007H2.png"\; state="\{\{state\}\}">Z</figure-callout>}}_1}\&times;\frac{Z_4}{{\mathrm{<figure-callout\; id="3"\; label="Z"\; filenames="Y2009201203670007H1.png,Y2009201203670007H2.png"\; state="\{\{state\}\}">Z</figure-callout>}}_3},$ The horizontal displacement of input gear is input, and the horizontal displacement of output gear is output.Wherein: Z ₁It is the number of teeth of the pinion on first duplicate gear; Z ₂It is the number of teeth of the gear wheel on first duplicate gear; Z ₃It is the number of teeth of the pinion on second duplicate gear; Z ₄It is the number of teeth of the gear wheel on second duplicate gear.

By geometric similarity triangle multiplication factor $K_{}$ ${}_2=\frac{H2}{\mathrm{<figure-callout\; id="1"\; label="H"\; filenames="Y2009201203670007H1.png,Y2009201203670007H2.png"\; state="\{\{state\}\}">H</figure-callout>}1},$ In Fig. 4 $\frac{H2}{\mathrm{<figure-callout\; id="1"\; label="H"\; filenames="Y2009201203670007H1.png,Y2009201203670007H2.png"\; state="\{\{state\}\}">H</figure-callout>}1}=\frac{\mathrm{\&Delta;}2}{\mathrm{\&Delta;}1}$ Obtain.Wherein the horizontal displacement of output gear is input, and the difference of sampled point and datum mark is output.Δ 1 is that the diameter of ball to be measured and reference sphere is poor; Δ 2 is the length of AB; H1 is the vertical range of laser instrument to the output gear lower surface; H2 is the vertical range of laser instrument to photoelectric detector.

This device total magnification is $K={\mathrm{<figure-callout\; id="1"\; label="K"\; filenames="Y2009201203670007H1.png,Y2009201203670007H2.png"\; state="\{\{state\}\}">K</figure-callout>}}_1\&times;{\mathrm{<figure-callout\; id="2"\; label="K"\; filenames="Y2009201203670007H1.png,Y2009201203670007H2.png"\; state="\{\{state\}\}">K</figure-callout>}}_2=\frac{Z_2}{{\mathrm{<figure-callout\; id="1"\; label="Z"\; filenames="Y2009201203670007H1.png,Y2009201203670007H2.png"\; state="\{\{state\}\}">Z</figure-callout>}}_1}\&times;\frac{Z_4}{{\mathrm{<figure-callout\; id="3"\; label="Z"\; filenames="Y2009201203670007H1.png,Y2009201203670007H2.png"\; state="\{\{state\}\}">Z</figure-callout>}}_{3_1}}\&times;\frac{H2}{\mathrm{<figure-callout\; id="1"\; label="H"\; filenames="Y2009201203670007H1.png,Y2009201203670007H2.png"\; state="\{\{state\}\}">H</figure-callout>}1}.$ If Z ₁=20; Z ₂=140; Z ₃=20; Z ₄=120; H2=150mm; H1=5mm;

Multiplication factor K=7 * 6 * 30=1260 then.

Pass through at last $D_{}$ ${}_1=D_0+\frac{\mathrm{\&Delta;}2}{K}$ Come sorting ball to be measured.

In above measurement assorting room, the utility model adopts gear drive and the leg-of-mutton amplification principle of geometric similarity, make the difference in diameter of measuring this ball and standard ball by the distance of measuring this sampled point and datum mark indirectly, improved certainty of measurement like this, made diameter exist the batch ball of minute differences can carry out sorting more accurately.

Particularly at the micron order error that needs in the ball assorting room to handle, can carry out thousand times amplification by this contrive equipment, be convenient to sorting apace, certainty of measurement can be within 1 μ m.

Claims (3)

1. the device of a gear-rack type laser scanning ball-sorting is characterized in that: comprise locating piece (1), input tooth bar (2), first duplicate gear (3), driving gear strip device (4), second duplicate gear (5), output tooth bar (6), laser instrument (7), photoelectric detector (8) and fixed head (9); Input tooth bar (2) is installed in the chute at two ends, one end of input tooth bar (2) is provided with pressure sensor, pressure sensor is provided with locating piece (1) outward, the other end of input tooth bar (2) contacts with driving gear strip device (4), the pinion that toothed portion and first duplicate gear (3) are arranged of input tooth bar (2), the pinion of the gear wheel of first duplicate gear (3) and second duplicate gear (5), the gear wheel of second duplicate gear (5) and output tooth bar (6) engagement, the two ends of output tooth bar (6) are installed in another chute, laser instrument (7) is installed in the below of output tooth bar (6), fixed head (9) is installed in the top of laser instrument (7) homonymy, and photoelectric detector (8) is tiled in the lower surface of fixed head (9).

2. the device of a kind of gear-rack type laser scanning ball-sorting according to claim 1, it is characterized in that: described locating piece (1), by forming to the arc groove of input tooth bar (2) outer incline and the baffle plate of a side, the gradient of arc groove is 5 degree～15 degree.

3. the device of a kind of gear-rack type laser scanning ball-sorting according to claim 1 is characterized in that: described driving gear strip device (4) is friction-driven or rack drives.

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