CN101559427B - Optical-lever laser scanning ball-sorting device - Google Patents

Abstract

The invention discloses an optical-lever laser scanning ball-sorting device. An input slider is arranged in a sliding chute at two ends of the input slider; one end of the input slider is provided with a positioning block; one end of a spring is compressed on one side of a straight groove in the middle part of the input slider, which is close to the positioning block; one end of a plane photoelectric detector is fixed on a fixing plate above the input slider; a push rod is arranged in a horizontal sliding chute; the tail part of the push rod close to the fixing plate is in hinged connection with the photoelectric detector; a lens is arranged between the input slider and the photoelectric detector; and a laser is arranged just below the lens and on the underside of the input slider. A sorting-measuring device utilizes the rotation of the laser to emit laser onto the photoelectric detector and then displays the situation of sorting the diameter of balls to the outside through a display screen of a controller. The device amplifies the difference between a measured ball and a datum ball to greatly improve measurement precision and ensure sorting accuracy, has the advantages of simple structure, convenient use, low cost and high efficiency, and is particularly applicable to sorting batches of balls small in diameter.

Description

The device of optical-lever laser scanning ball-sorting

Technical field

The present invention relates to sorting unit, especially relate to a kind of device of optical-lever 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 service life of rolling bearing, and noise is big in the bearing working process.So each rolling bearing production unit requires ball is carried out sorting by diameter.

But still adopt manual work to carry out measuring mode one by one to the sorting of ball at present; 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 object of the present invention is to provide a kind of device of optical-lever laser scanning ball-sorting, improve the certainty of measurement of ball and the separation velocity of ball, thereby guarantee the assembly quality and the production efficiency of rolling bearing.

The technical scheme that the present invention adopts is following:

The present invention is by locating piece, input slide block, spring, lens, photoelectric detector, push rod, fixed head and laser constitution.The input slide block is installed in the chute at two ends; One end of input slide block is provided with locating piece; One end of spring is compressed in the side of input slide block middle part straight trough near locating piece, and an end of planar light photodetector is fixed on the input slide block upper fixed plate, push rod be installed in the horizontal concrete chute and with photoelectric detector in afterbody hinge-coupled near fixed head; Lens be installed in input slide block and photoelectric detector between, laser instrument be arranged on lens under and at the downside of input slide block.

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

Described lens adopt concavees lens, and concavees lens optical axis and laser instrument centering are fixed during installation.

The beneficial effect that the present invention has is:

The present invention utilizes the optical geometry amplification principle, and it is high to have (1) certainty of measurement; (2) simple to operate; (3) be easy to install, safeguard; (4) measurement category of ball is big, is prone to regulate; (5) amplification coefficient is adjustable, and precision is adjustable; (6) production efficiency advantages of higher.The present invention can measure 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 invention.

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

Fig. 3 is a relatively sketch map of measurement of the present invention.

Fig. 4 is an analysis enlarged drawing of the present invention.

Among the figure: 1, locating piece, 2, slide block, 3, spring, 4, lens, 5, photoelectric detector, 6, push rod, 7, fixed head, 8, laser instrument.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is described further.

Like Fig. 1, shown in Figure 2, the present invention includes locating piece 1, input slide block 2, spring 3, lens 4, photoelectric detector 5, push rod 6, fixed head 7 and laser instrument 8.Input slide block 2 is installed in the chute at two ends; One end of input slide block 2 is provided with locating piece 1; One end of spring 3 is compressed in the side of input slide block 2 middle part straight troughs near locating piece 1; One end of planar light photodetector 5 is fixed on the input slide block 2 upper fixed plates 7; Push rod 6 be installed in the horizontal concrete chute and with photoelectric detector 5 in afterbody hinge-coupled near fixed head 7, lens 4 be installed in input slide block 2 and photoelectric detector 5 between, laser instrument 8 be arranged on lens 4 under and at the downside of input slide block 2.Locating piece 1 is by forming to the arc groove of input slide block 2 outer inclines and the baffle plate of a side, and the gradient of arc groove is 5 degree～15 degree.Lens 4 adopt concavees lens, and concavees lens optical axis and laser instrument 8 centerings are fixed during installation.

Concrete operation principle and process are following:

At first (shown in Fig. 3 broken circle, diameter is D the standard ball through high-acruracy survey ₀) be placed on the locating piece 1 and position, slide block 2 compresses ball under the effect of spring 3, and laser equipment 8 begins rotation then; Laser is blocked by slide block 2 at the beginning; Can't be mapped on the photoelectric detector 5, when rotating to certain angle, when just in time being received by photoelectric detector 5; Laser instrument 8 stops operating, and keeps in the center.Adjust the position, the left and right sides of locating piece 1 again, the vertical scioptics 4 of laser are mapped on the photoelectric detector 5 when guaranteeing to measure this standard ball.Through after the thorough adjustment, confirmed that this standard ball vertically passes lens 4 and is mapped to the position of photoelectric detector 5 and stores, be designated as datum mark, like C point among Fig. 4.Then (shown in Fig. 5 solid line circle, diameter is D with ball to be measured ₁) be placed on the good locating piece of adjusted 1 and position, adopt identical process that the point of laser directive photoelectric detector 5 is handled, be designated as sampled point, like the point of the B among Fig. 4.Message handler through controller calculate this sampled point and datum mark apart from BC, the magnification ratio K that combines again to set in advance carries out difference and calculates, finally the diameter D through display screen demonstration ball that this time surveyed ₁

The present invention adopts the optical geometry amplification principle, makes the difference in diameter of measuring this ball and standard ball by the distance of measuring this sampled point and datum mark indirectly.The present invention has three grades of amplifications, is respectively that similar triangles amplify, and concavees lens are dispersed and amplified and the right angled triangle amplification.

Similar triangles multiplication factor

Concavees lens are dispersed multiplication factor $K_{}$ ${}_2=\frac{{\mathrm{\&Delta;}}_3}{{\mathrm{\&Delta;}}_2}=\frac{V+h2}{V}=\frac{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H2009100987756E00012.png"\; state="\{\{state\}\}">h</figure-callout>}2\&times;\mathrm{<figure-callout\; id="3"\; label="h"\; filenames="H2009100987756E00022.png"\; state="\{\{state\}\}">h</figure-callout>}3+f\&times;(\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H2009100987756E00012.png"\; state="\{\{state\}\}">h</figure-callout>}2+h3)}{\mathrm{<figure-callout\; id="3"\; label="h"\; filenames="H2009100987756E00022.png"\; state="\{\{state\}\}">h</figure-callout>}3\&times;f};$

Right angled triangle multiplication factor

Total magnification $K=\frac{{\mathrm{\&Delta;}}_4}{{\mathrm{\&Delta;}}_1}=(\frac{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H2009100987756E00012.png"\; state="\{\{state\}\}">h</figure-callout>}2\&times;h3}{h1\&times;f}+\frac{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H2009100987756E00012.png"\; state="\{\{state\}\}">h</figure-callout>}2+h3}{h4})\&times;\frac{1}{\mathrm{Cos}\mathrm{\&theta;}}.$

Δ ₁Diameter difference for ball to be measured and reference sphere; Δ ₂Length for DE; Δ ₃Length for AB; Δ ₄Length for BC; H1 is the vertical range that laser instrument arrives input slide block lower surface; H2 is that the vertical range that A is ordered is arrived in the lens centre; H3 is the vertical range of laser instrument to the lens centre; V is the distance that the lens centre is put in the virtual image; θ is the inclination angle of photoelectric detector; F is the focal length of lens.

If get h1=5mm; H2=200mm; H3=200mm; F=10mm; θ=60 °;

Multiplication factor K=1760 then.

So the ball diameter through above process is carried out is measured and sorting, and is convenient and swift, precision is high, and cost is low, and the development trend that accords with production is made is specially adapted to the ball that there is minute differences in quick packing diameter, increases work efficiency.

Claims (3)

1. the device of an optical-lever laser scanning ball-sorting is characterized in that: comprise locating piece (1), input slide block (2), spring (3), lens (4), photoelectric detector (5), push rod (6), fixed head (7) and laser instrument (8); Input slide block (2) is installed in the chute at two ends; One end of input slide block (2) is provided with said locating piece (1); One end of spring (3) is compressed in the side of input slide block (2) middle part straight trough near said locating piece (1); One end of planar light photodetector (5) is fixed on input slide block (2) the upper fixed plate (7); Push rod (6) be installed in the horizontal concrete chute and with photoelectric detector (5) in afterbody hinge-coupled near fixed head (7), lens (4) be installed in input slide block (2) and photoelectric detector (5) between, laser instrument (8) be arranged on lens (4) under and in the below of importing slide block (2);

At first be placed on the standard ball on the locating piece (1) and position, confirm that laser vertically passes lens (4) and is mapped to the position of photoelectric detector (5) and stores, be designated as datum mark C point; Then ball to be measured is placed on the good locating piece of adjusted (1) and positions; Point by laser directive photoelectric detector (5) is handled; Obtain sampled point B point; Message handler through controller calculate that this sampled point B point and datum mark C order apart from BC, combine the magnification ratio K of setting in advance to carry out difference calculating again, through the diameter D1 of the display screen demonstration ball of surveying.

2. the device of a kind of optical-lever laser scanning ball-sorting according to claim 1 is characterized in that: described locating piece (1), by forming to the arc groove of input slide block (2) outer incline and the baffle plate of a side, the gradient of arc groove is that 5 degree～15 are spent.

3. the device of a kind of optical-lever laser scanning ball-sorting according to claim 1 is characterized in that: described lens (4) adopt concavees lens, and concavees lens optical axis and laser instrument (8) centering is fixed during installation.

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