CS240933B1 - Apparatus for measuring internal cylindrical surfaces, in particular lids and flanges - Google Patents

Abstract

The device is intended for automated measurement of internal cylindrical diameters of flanged components. The design of the device is being addressed, which automatically positions, clamps and measures flanged components. The essence is that two hydraulic cylinders are mounted opposite each other on one plate, which control the centering, clamping and measuring devices, while the end positions of the sliding parts, the clamping force and the position of the measuring head are adjustable. The device can also be used for automated control and technological workplaces, where the insertion and removal of the measured components is ensured by industrial robots or manipulators.

Description

The invention relates to a device for measuring inner cylindrical surfaces, in particular lids and flanges, and by hydraulic alignment and clamping of the parts to be measured, wherein the measurement of the dimensions is carried out by a contact sensor head.

Previously known embodiments of internal cylindrical surface measuring devices generally use air systems and a built-in sensor in the body of the measuring mandrel to determine the dimensions. The air pressure in the measuring system is determined by the clearance between the mandrel and the bore to be measured. This ee is converted into an electrical signal whose magnitude is directly proportional to the magnitude of the measured dimension. As a transducer between air pressure and electrical signal, ee uses a flexible element with strain gauge sensors. The disadvantage of air systems is the necessity to design and manufacture measuring pins for each measured dimension. This results in a low universality of these measuring devices and increases the cost of adapting them to another dimension. Furthermore, in air systems, the sensing speed of the measured dimension is limited, which ee has a negative effect especially during continuous measurement and evaluation of the maximum and its position on the measured components. Measuring multiple inner cylindrical surfaces at the same time makes the measuring darkness very complicated and hence laborious and costly. Furthermore, there are known devices which sense the measured diameters by means of contact, the contact deflection being converted through some type of backlash-free meohanism and through an inductive or capacitive sensor into an electrical signal. The disadvantage of these devices is that they do not allow automatic insertion and removal of the measured components by means of industrial robots or manipulators and subsequent automatic measurement of internal dimensions simultaneously. A further disadvantage of said devices is their large external dimensions, which makes it difficult to retrofit these measuring devices into automatic technological workstations.

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The essence of the device for measuring the inner cylindrical surfaces, in particular the lids and flanges, is based on the fact that a lower hydraulic cylinder is mounted on the underside of the base plate in which the lower felt is provided with a lower piston. *, slidably mounted * on two guide bars · The slider is firmly connected to the β bracket, in which the centering pin is integrated · The clamp is attached to the front of the bracket. There is a threaded hole * in the top of the bracket * in which * the adjusting screw is housed · The adjusting screw cylindrical shaft is rotatably mounted in a trolley with a sensor head attached to it · The upper hydraulic cylinder is attached to the upper end of the base plate. in which an upper piston is mounted with an upper piston, the outer part of which is mounted in a through-bore * cylindrical bore formed in the holder. The front of the piston rod is rigidly attached to the guide bar *, slidably mounted * on the guide rods. The say plate * is firmly attached to the foundation plate, in which there are two cylindrical pins. A flange is fastened to the upper part of the bracket on which a spring plate is slidably mounted by means of a clamp. At least three compression springs are mounted between the holder and the shim. One end * of each compression spring is in contact with the face of a drilled screw that is screwed into the holder. Stoppers are attached to the slider and to the bike, which contact the end * in the harness positions! switches, screwed on *! to the base plate.

The main advantages of the device for measuring the inner cylindrical surfaces, in particular the lids and flanges, according to the invention are that automatic insertion and retraction can be used by industrial robots or manipulators, and the setting, clamping and measuring of the component is automatic, even when used Multiple measuring heads for measuring multiple diameters at the same time * while adjusting the device is quick and easy on the operator.

In the drawing, aa is shown in side view with partial cross-sectional view of the whole device according to the invention, and in Fig. 2 the device is shown in plan view.

The device according to the invention consists of a base plate 1 with which the lower hydraulic cylinder is fixedly connected, in which the lower piston χ is slidably connected, connected to the lower piston rod 6, which is fixedly connected to the slider * χ, which is

240 933 slidingly mounted on two guide rods χ. The bracket X, in which the centering pin 8, is integrated, is externally connected to the slider * χ J · P *. The clamp χ is attached to the χ bracket. In the upper part of the bracket X there is a bore and a thread * in which * an adjusting screw 10 is mounted, whose cylindrical shaft is rotatably mounted in a cylindrical bore * in the carriage 11. In the lower part of the carriage 11 a sensor head 12 is attached. the upper hydraulic cylinder 13 is mounted in which * the upper piston 14 is connected to the β upper piston rod 15. The outer part of the upper piston rod 15 is located in a through cylindrical bore * formed in the holder 16. The front part of the upper piston rod 15 is connected se eaykadlea 17. slidingly mounted * on guide bars χ. In the upper part of the bracket 16, a flange 20 is fastened to the threaded connection *, to which a spring plate 22 is slidably mounted by means of a clamp 21. 16 and a shim 21 are provided with at least three compression springs 23. wherein a bore-in screw contacts the end of the compression spring 23 at one end.

24, which is screwed in the holder 16. To the slider 17 and to the slide 17, there are fixed stops 25 which, in the limit positions, contact with the end *! switches 26. screwed on *! to the base plate i ·

The function of the device according to the invention is as follows. The measured part χχ is pushed onto the cylindrical pins 19 facing the base plate 18. Upon supply of the pressure medium d © of the upper hydraulic cylinder 13 to the respective side of the upper piston 14, a displacement of the say 17 occurs, with the base plate 18 pressing the measured component 27 onto the spring plate 22. slider χ with bracket X, wherein the centering pin 8 is inserted into the hole of the measured component χχ, the fixture χ presses the face of the measured component χχ onto the spring plate χχ and the measuring contact of the sensor head 12 is inserted into the hole measured. By supplying the pressure medium to the opposite sides of the pistons χ, 14, the slider X and the slide ΐχ are reversed, thereby establishing an initial position at which the measured component 27 is removed and the next one is retracted. The adjustment of the device is carried out by the adjusting screw * 10, which adjusts the position of the sensor head 12. By means of the screwed screws 24, the force of the compression springs 23 acting through the * shim 21 is adjusted to the spring

4 240 933 the plate 22 and the travel of the limit switches 26 relative to the base plate 1 ss sets the travel range of the slider 6 and the slide 17.

The design of the device for measuring the internal cylindrical surfaces of the present invention allows the measurement of flange components of various sizes in automated process stations. As an alternative, two or more sensor heads 12 may be installed on a single device of the present invention.

Claims (1)

P fi 1 D Μ ϊ I OF THE INVENTION Device for measuring inner cylindrical surfaces, in particular lids and flanges, consisting of a base plate of hydraulic cylinders, pistons and piston rods, characterized in that on one side of the base plate (1) a lower hydraulic cylinder (2) is attached the lower piston (3) is mounted with the lower piston rod (4) attached, which is fixedly connected to the slider (5) by the front part, slidingly mounted on two guide rods (6), the slider (5) being fixedly connected to the bracket (7). an integrated centering pin (8) and on the front side of the bracket (7) is fastened with a clamp (9) and a threaded hole is formed in the upper part of the bracket (7) in which the adjusting screw (10) is mounted. mounted in a trolley (11), to which the sensor head (12) is attached, and on the other side of the same surface of the base plate (1), a top hydraulic cylinder (13) is mounted in which the top st (14) * by a top piston rod (15), the outer part of which is located in a through cylindrical bore formed in the holder (16), the front part of the piston rods (15) being rigidly connected to the slide (17) slidingly mounted on the guide rods 6) and a base plate (18), which is provided with two cylindrical pins (19) and fixed to the upper part of the bracket (16) with a threaded connection, is fastened with a flange (20) to which the flange (21) is attached ) a suspension plate (22) is slidably mounted and at least three compression springs (23) are disposed between the support (16) and the shim (21), one end of each compression spring (23) being faced by a drilled screw (24) which is In the bracket (16), stops (25) are fastened to the slider (5) and the slide (17), which contact limit switches (26) screwed to the base plate (1) at limit positions.