FI87491B - Arrangement for aligning couplings for different types of shafts - Google Patents

Description

87491 DEVICE FOR ORIENTING CLUTCHES ON DIFFERENT TYPES OF AXLES.

The invention relates to a device for directing switches on different types of shafts using a laser transmitter arranged in one axis as a light source. The transmitted beam in the axial direction is reflected from a mirror arranged perpendicular to the second axis back to the receiver.

Most often, the orientation of the switches takes place in the so-called with a throwing clock, which has good usability especially at short wheelbases, although the method is time consuming. At long intervals between the axis-10, various extension arms have to be built for the watch, in which the so-called hang loose. In other words, the longer the wheelbase, the more inaccurate the result. The use of a dial gauge also requires a high level of professionalism and extensive expertise from different areas of use.

15 There are also devices based on laser technology, the disadvantage of which is the rotation of both coupling heads, which is not always easy and not always possible at certain installation stages. Examples of optical devices are given in EP 74 017 and GB 2 1R9 330. Articulated shafts, which in certain areas make up the majority of the shaft lists, are also excluded from the fields of application of these devices.

; ·. One of the disadvantages is the so-called impossibility of using mounting screws because the devices print the repair directions * I in millimeters and its parts and the installation is done with spacers of different thickness] ’25.

The couplings of the universal joint shafts are most often aligned by various mixing methods, in which e.g. theodolite, leveling machine, line rulers, tape measures, etc.

The device according to the invention provides an improvement in the above-mentioned disadvantages. The invention is known from the features defined in the claims.

The increase in radial accuracy as the wheelbase increases is probably the greatest advantage of the invention. In other words, error between switches 2 87491.

accumulates as wheelbase increases.

The use of focusing in conjunction with the laser gives the reflection pattern a clear and precise shape that is easy to align with the 5 reflection boards.

The device acts as a light source emitting a directional beam, a laser module whose beam is focused by optics attached to the device so that the pattern reflected by a 10-hole centered silver-plated surface mirror with a crosshair is regular in shape and sharp at the edges. The orientation of the switches can take place without rotating the switches and only by moving the other side of the switch in the x, y direction.

15

The couplings of the articulated shafts can be oriented in the same way as the straight axes using a mirror transfer arm which can be moved steplessly according to the diameter of the coupling.

In the following, the invention will be explained in detail with reference to the accompanying drawing figures.

Figure 1 shows the apparatus as a whole, excluding the arm for articulated shafts.

25. : Figure 2 shows a mirror part comprising a mirror with a centering hole in the middle and a crosshairs centered thereon.

The mirror is attached to the center of the flange, Fig. 1, part 7, where; . is the same size hole as in the game.

30

Figure 3 shows an example of a reflection pattern on the surface of a reflection surface.

Fig. 4 shows a transfer arm for articulated shafts; 35 which is attached to the flange, Fig. 1 .., part 8, with separate. screw clamps. The arm is centered relative to the clutch by a groove in the flange and a rail in the arm.

3 87491

The operation of the device is started by attaching the centering flanges to the ends of the switches using a centering pin: Fig. 1, parts 1a, Ib and 2.

After centering, the flanges are fastened to the couplings with the fastening screws of the shafts.

A laser module with its reflection boards, Fig. 1, parts 3, 4, 5 and 6, is then placed in the tube in the centering flange on its own flange.

A mirror part shown in Fig. 2, Fig. 1, part 7 is placed in the flange centered on the end of the second switch, respectively.

In the case of an articulated shaft, the flange 7 is attached to the arm shown in Fig. 4.

Once the laser module and the mirror part are installed, the laser is switched on and by moving the switches relative to each other to such a position that the reflected beam with its grids is in the middle of part 6 of Fig. 1, the shaft is ready for connection.

The shape of the interference pattern, Fig. 3, is obtained by experimenting with different focal lengths with optics attached to the laser module, Fig. 3, part 5. The device was calibrated by attaching the laser module to a separately adjustable rotating base, e.g. a motor with adjusting screws mirror. when attached to any solid and vibration-free .. base. By adjusting the position of the base and the module adjustment screws • ** 25 so that the reflection pattern remains in the center of the reflection board - · when rotating the laser module, the laser module has its flange, Fig. 1, * * * '* part 3, on the center line, the greater the distance higher is the calibration: :: accuracy. The space used should be without artificial lights 30 and the optimal location should be completely dark.

; ··· The mirror, Fig. 1, part 9, is centered according to Fig. 2 with holes, both in the mirror and in the flange, using a pin of the same size, Fig. 2, part 10.

• 35 As an individual operating example, the following should be described: _ When using the device, it is usually more convenient to attach the laser side to the operating head, ie most often to the 4 87491 • switch of the drive motor.

By arranging the drive side so close to its correct position that the reflected beam hits the reflecting surface, Fig. 1, part 6, the actual fine adjustment can be started, in which the reflecting rings are usually centered with the panel rings, usually using 5 mounting screws, the end faces of the couplings are parallel and the grid whereby the axial error is eliminated.

10 What is essential is a hole in the mirror, where when reflected back the beam is reflected as if as a tube on the reflection board and with which the mirror can be centered in the absolute center of the switch by means of flanges, Fig. 1, parts 7, 8 and Ib.

Essential to accuracy is the interference pattern 15 obtained by focusing, which is regular in shape and sharp in edges, as would not be the case if optics were not used, Figure 1, part 5.

As an example of a radial accuracy of 0.1 mm in a switch with a diameter of 150 mm, with a wheelbase of 20 5000 mm, the deviation of the reflected beam in the reflection board is about 6 mm.

The advantages of the method are thus high radial accuracy, wide range of applications, short installation time and low potential for error.

• 25 The object to be observed is therefore only the reflection board and the pattern reflected on it, which can be easily centered on the reflection board even with a little skill.

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Claims (4)

5,874,491 Claims. Device for directing switches on different types of shafts using a laser transmitter (4) arranged on one axis as a light source, the axial beam emitted from which is reflected from a mirror (9) perpendicular to the other axis back to the receiver (6), characterized in that the laser transmitter is axially centered and provided with an optic (5) which already focuses the outgoing beam with the interference effect sharp, and that the reflective mirror (9) arranged on the second axis is provided with a central hole which is non-reflective and the second axis with a receiving reflection board (6). 2. Anordning enligt patentkravet 1, känn n e t e c k n a d därav, att den re f 1ekterande Spegeln (9) försetts med ett centralt härkors. Device according to Claim 1, characterized in that the reflecting mirror (9) is provided with a central hairline. Device according to Claim 1 or 2, characterized in that a fit is provided at each end of the shaft. flanges (la, Ib) perpendicular to them. Device according to one of the preceding claims, characterized in that: Y can be mounted centrally on the mirror (9, 8) for coupling the PTO shafts; a transfer arm (Fig. 4) which is steplessly transferable according to the diameter of the coupling. * · «• · · 8749Ί]. Anordning för inrik tiling av koppi Ingar pä axlar av olika typ genom att som ljuskälla arivända en päena Axel n anordnad lasersändare (4), vars axelriktade sträle reflekteras frän en päen andra Axel vinkelrätt mot denna anordnad spegel (9) tillbaka account mottag (6), in which the laser placer is concentrated in a plurality of axes and transverse mods (5), so that the focus is on the iodine and then the splice genome is interfered with the sphere, i.e. in the order of the reflections, the mirror (9) is shown to be centrally sound, and in the case of the reflection axes (6). 3. An arrangement according to claim 1 or 2, which comprises the axle of the anchor flange (la, Ib) centrally and in a manner. - ·· - · 4. Anordning enligt nägot av de föregäende patentkraven, kän n - netecknad därav, att för koppling av ledaxlarna centre-, ·. : The ratios of the mirror (9, 8) can be shown (Fig. 4) on the other side.