RU2269090C2 - Arrangement for controlling dimensions of products - Google Patents

Abstract

FIELD: the invention refers to measuring technique precisely to controlling prismatic angular measures and may be used for certification of conical measures of considerable dimensions.

SUBSTANCE: the arrangement for controlling of dimensions has a U-shaped foundation for accommodation of the product. On the lateral surface of the foundation with possibility of a horizontal travel there are adjusting screws with hemispheric endings interacting with a replacement base plate. On the other lateral surface of the foundation with possibility of a horizontal travel there are measuring endings placed contrary on rotary arched levels. The measuring endings are interacting with the base plate and the surface of the product. The arrangement is provided with a removable support attached to the lateral wall of the foundation between the measuring ferrules.

EFFECT: allows to increase accuracy of controlling.

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Description

The invention relates to measuring technique, and more specifically to the control of prismatic angular measures, and can be most effectively used to certify conical measures of cones used to check the taper of the internal holes of journal-bearings of fluid friction bearings and conical necks of rolling rolls.

Prismatic angular measures (conical measures) have a constant angle value and represent a geometric figure in the form of a direct prism.

When measuring prismatic angular measures (conical measures), the same measuring means are used as when measuring parts.

A device for controlling the size of products is known, containing a base for placing the product, measuring jaws and a device for measuring size (ed. Certificate. CCCP No. 323636, G 01 B 3/38, decl. 10/17/1969, publ. 10/12/1971 .).

The disadvantage of this device is the inability to measure the dimensions of parts that differ in shape from the shortened cylinders, for example, when the part has a prismatic shape in the form of a plate, and its sides are inclined to the axis of symmetry at a certain angle.

Of the known devices for controlling the size of products, the closest in technical essence is a device containing a base for placing parts, measuring tips with a mechanism for their installation on opposing surfaces of the product and a device for measuring size (Markov N.N., Ganevsky G.M. Design , Calculation and operation of measuring tools and instruments. M.: Mechanical Engineering, 1981, s.263-265).

The item is mounted vertically on the base. The measuring tips are made in the form of half-cylinders, which can rotate in their nests and self-mount on the measured cone.

In height, the carriage carrying the tips is installed using end measures of length.

A disadvantage of the known design for controlling the size of products is that there will be insufficient control accuracy, since the device uses measuring tips in the form of half-cylinders, which can be rotated in their nests and mounted on the measuring cone. The accuracy of such structurally complex measuring tips, without a doubt, will be adversely affected by the errors in fitting the tips in the sockets of the device and its self-installation on the measured cone.

In addition, when measuring conical measures of plate shape of significant dimensions (length = 1800 mm, width = 400 mm, thickness 12 mm, taper 1: 5, weight ≈ 25 kg), their installation in a vertical position without the use of structurally complex and expensive devices is not possible , since the conical measure does not have base planes capable of holding it upright.

The objective of the present invention is to provide a device that allows to increase the accuracy of control by reducing the errors of the measuring instruments and the conditions in which measurements are made.

The problem is achieved in that in the device for measuring the size of the products, containing the base for placing the product, measuring tips with a mechanism for installing them on opposite surfaces of the product and a device for measuring size between the measuring tips, according to the invention, the base for placing the product is made U-shaped, on one side surface of which with the possibility of horizontal movement mounted brackets with adjusting screws with hemispherical with the end interacting with the removable base plate, and on the other side surface with the possibility of horizontal movement mounted measuring cylindrical mounted on mirror-mounted rotary arc-shaped levers, interacting with the base plate and the surface of the product, and equipped with a removable support attached to the side wall of the base between the measuring tips .

Such a constructive implementation of the device for controlling the dimensions of the products will provide high accuracy of control due to the fact that the part lies horizontally during the measurement, and the proposed mechanism for installing the measuring tips and the presence of the base plate and the adjusting screws that interact with it makes it possible to ensure a clearance-free contact and, thus, precisely fix the measuring tips on the product.

To explain the invention, a specific embodiment of the invention is provided below with reference to the accompanying drawings, in which:

figure 1 shows a device for controlling products, a General view from above, the position when measuring a smaller size.

figure 2 is the same position when measuring a larger size,

figure 3 - size aa in figure 2,

figure 4 - size BB in figure 1,

figure 5 - size bb in figure 1.

A device for controlling the dimensions of products, for example, conical measures, consists of a U-shaped support pad formed by a plate 1 and two side walls 2 and 3; measuring tips 4 and 5 mounted respectively on the holders 6 and 7, one of which is mounted with the possibility of movement along the reference platform; interchangeable base plate 8 lying on the supporting platform and interacting with the reference rollers 4 and 5 and with the hemispherical ends of the adjusting screws 9, and any known device for measuring the distance between the outer surfaces of the rollers 4 and 5, for example, a bracket with a reading device in accordance with GOST 11098-75 (not shown).

The holders 6 and 7 are fixed on the side wall 3 of the support platform by means of bolts 10, the heads of which are placed in a T-groove on the side wall 3. The bolts are fixed with a washer 11 and a nut 12.

Measuring cylindrical tips 4 and 5 are mounted on a spherical tip 13, mounted on arcuate levers 14 and 15 mounted on holders 6 and 7 with the possibility of rotation about the axis 16 and fixed by a bolt 17, passed through the wall of the holders 6 and 7.

Adjusting screws 9 with hemispherical ends are fixed on the L-shaped brackets 18 mounted on the side wall 2 of the support platform by means of bolts 19, the heads of which are movably placed in a T-shaped groove made on the side wall 2 and fixed by a washer 20 and a nut 21 .

An additional support 22 is connected with the support platform of the U-shaped shape for placing the conical measure, on which the head of the bolt 23 carrying the clamp 24 for fixing the conical measure 25 is mounted with the possibility of movement in the longitudinal T-groove. The support 22 is installed between the reference holders 6 and 7 rollers 4 and 5.

The device operates as follows.

On the plate 1 of the supporting platform, lay the base plate 8 and install additional support 22 of the appropriate size under the conical measure 25.

For certification, a conical measure, for example, having a length of 950 mm and an end width of 60 and 250 mm, is laid on the base plate 1 and the additional support 22. One of its end faces (base) abuts the base plate 8, and the other is fixed by means of a bolt 23 with a grip 24. The base plate 8 by means of adjusting screws 9 is tightly pressed by its base surface to the base end, for example, 60 mm wide, of a conical measure 25.

Having made sure with the help of a probe the density of contact of the base surfaces, move the measuring tips 4 and 5, ensuring their tight contact with the base surface of the strap 8 and with the working surfaces of the conical measure 25.

A “rough” installation of the measuring tips 4 and 5 is carried out by moving the holders 6 and 7, which are fixed with nuts 12. The exact installation is made by turning the arched levers 14 and 15 relative to the axis 16 and rotating the screw 17, the flat end of which acts on the arched lever rigidly connected to a spherical the tip 13, placed inside the tips 4 and 5. As a result, the tips 4 and 5 are pressed almost equally with force to the base surface of the strap, and to the working surface of the conical measure.

Using a probe, check the density of contact of the surface of the tips with the base surface of the strap 8 and the working surfaces of the conical measure 25.

After that, by any known method, measure the distance H between the outer surfaces of the reference rollers 4 and 5.

After certification of one end of the conical measure, it is detached, rotated in a horizontal plane by 180 °, the holder 7 of the reference rollers 5 is moved to a position corresponding to the new size of the conical measure to be controlled.

If necessary, change the base plate 8, it has several sizes.

The operation of fixing the conical measure and measuring its second size is carried out as described above.

The proposed device for controlling the size of products in comparison with the known allows to increase the accuracy of measurement.

Claims (1)

A device for controlling the size of products containing a base for placing the product, measuring tips with a mechanism for their installation on opposing surfaces of the product and a device for measuring size between the measuring tips, characterized in that the base for placing the product is made U-shaped, on one side surface of which with the possibility of horizontal movement mounted brackets with adjusting screws with a hemispherical end, interacting with a removable base second strap, and on the other side surface with horizontally movable mirror mounted on the arcuate arms disposed rotatable cylindrical metering tips that interact with the base bar and the surface of the article, and is provided with a removable support secured to the side wall of the base between the measuring tips.

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