SE463402B - Tool for positioning and securement of workpieces - Google Patents

Abstract

Tool for securement and positioning of workpieces which have surfaces which are concealed from, for example, a welder or are poorly accessible with commonly used welding tools. The tool is especially used during the actual bonding operation, whereafter it can be removed. During the bonding process the welder has both hands free. One embodiment of the tool is such that the tool has two shanks 1, of which the one shank is telescopically retractable into the other. The shank 1 has extremities 2 to which tool feet 3 are hinge- connected. Attached to the feet 3 are magnets 4, alternatively a vacuum-suction device or a combination of the two. The feet 3 are attached to the workpieces to be joined together. The tool, which is flexibly adjustable, can now be used to position one of the workpieces in a position intended for bonding. <IMAGE>

Description

463 402 The tool in SU, A, 1 204 373 and SE, C, 149 441 clearly states that they are intended to attach to ferromagnetic materials while our tool with the vacuum suction device also attaches to non-magnetic materials, which is important eg when welding plastics and more.

With the 3600 adjustable shafts, the tool also exhibits a certain form of synergy as this adjustment is also partly achieved via the shaft joints, and in this way the telescopic device speeds up the adjustment in the position intended for welding.

The invention, the characteristics of which appear from the patent, will now be described in more detail with reference to the accompanying drawings, in which: Fig. 1 shows a tool with a design with two tool shafts in telescopic design and end means with arranged magnets seen from the side.

Fig. 2 shows the tool according to fi g 1 seen directly from above.

Fig. 3 shows the (locking) locking mechanism and tilt swivel for the tool according to the previous urer gures.

Fig. 4 shows (locking) locking device for mechanism according to fi g 3.

Fig. 5 shows how the tool can be arranged for positioning and holding replacement plate during welding work.

Fig. 6 shows the tool in an alternative embodiment, where ball joints connect the tool shafts and the tool feet to each other.

Fig. 7 shows yet another alternative embodiment of the tool. Here the shafts end with an ibel exile joint adjustable in distinct positions and with suction cups mounted on the tool feet.

Equivalent details in the drawing figures have the same reference numerals.

Fig. 1 shows the tool seen from the side with tool shafts (1) telescopically connected to each other, ie the shaft with the smaller outer dimension is insertable into the shaft with a larger inner diameter than the outer diameter of the previous shaft. The shafts (1) are rotatable relative to each other 3600 according to the indication of the arrowheads. The shafts (1) have end terminations (2) which in turn end with legs. The legs have end members (tool feet) (3) hinged mounted to which magnets (4) are attached. The magnets (4) are for attaching the tool feet (3) to the workpieces to be joined. Cylindrical pins (5) which form part of the ball joints themselves have the task of attaching the joints to the legs. A mechanism (6) is included in the function that locks the tool or tool feet in the position intended for locking. The function of the mechanism (6) is described in more detail in Figures 3 and 4.

Reference numerals (7) point to letters that have been applied so that a better grip on the shafts (1) is obtained when the tool is adjusted as the arrowheads indicate.

The shafts (1) are preferably rotatable and slidable with a certain built-in inertia towards each other. They may also have devices for locking in distinct positions, which, however, are not shown in the initials. A protective damask (8) is provided to protect threaded joints, quick couplers or for decorative purposes only. ; Fig. 2 shows the tool according to fi g 1 seen straight from above. The ball joint (9) is seen in the ball joint with recesses (pits) (10) where the pin or snap pin (11) snaps in by means of spring action, so that the tool and the tool feet (3) are kept in the desired position and allowed by the tool and joints construction. The ball joints with the hinge balls (9), ß 465 402 which are held in place by bearing cups (12) fastened to the legs (2) by means of the pins (5) (shown in Fig. 1).

Fig. 3 shows the end terminations (2) in partial section so that the locking mechanism (10,11,13,14,15) and the articulation ball (9) appear. Similar snap ball (9) with snap action is known from US, A, 3 433 510. The pin (11) fits into the recesses and can be locked with the lock washer (13) which runs a groove orthogonal to the end terminations (2) of the shaft (1) .

The pin (11) is actuated by a helical screw spring (14) so that the snap action is obtained. In the groove where the pin (11) runs, there is a stop (15) where one end of the ligger end abuts. The other one . fi the end of the spring rests against the pin (11). The tool foot (3) here has an external thread (16) intended to be screwed into the ball joint (9). The tool feet (3) can, however, just as easily be equipped with commercially available quick couplings, those equipped with so-called male and female coupling parts, bayonet couplings or the like. It does not matter if the male or female coupling is located on the ball joint (9) or on the tool foot (3). The same applies to the external and internal thread.

The tool feet (3) can be replaced by means of the threaded joints or quick couplers with a combination of magnet (4) and vacuum suction device which is mounted on the tool if desired. Magnets (4) and vacuum suction devices of any strength and size can thus be used. But the tool feet can just as easily be firmly connected to the joints. The magnets (4) can be resiliently attached and divided into smaller pieces, so that they fit better on not completely flat workpiece surfaces.

Fig. 4 shows the locking washer (13) with cylindrical pins (6), recess (17) for insertion into grooves on the pin (11) so that it is locked in position, and recess (18) so that the pin (11) can run freely in its trace when the snap action is desired. The pins (6) protruding a bit on both sides of the shaft end caps (2) are affected for locking or clearance.

Fig. 5 shows the tool according to the preceding figure in a conceivable working position where the existing sheet metal (19), which has had a part of its surface damaged by rust, must now be replaced with fresh sheet metal (20).

The plate (20) is held and positioned in position by means of the tool, the permanent magnets of which are attached to the accessible surfaces of the respective plates.

The embodiment according to fi gures 1-4 makes the tool very fl visible in terms of its adjustability in different positions. However, many other embodiments are conceivable under the claims. The tool shafts (1) or their end terminations (2) can be provided with support devices to provide more stability to the tool, or as support for edged workpieces. The tool can also be provided with handles in cases where they are heavy workpieces and these are positioned with the help of lifting devices such as a lifting crane.

Fig. 6 shows a further embodiment of the tool, still with tool feet (3) where magnets (4) are arranged, but vacuum suction devices can also be used. The shafts (1) and the end members (3) are connected by simple ball joints (22).

Schematically, two workpieces (23) have also been drawn. The hinges can also here be provided with suitable locking devices, not shown in the guide. This tool is also very adjustable.

Fig. 7 shows another extension shape of the tool, here the joints (24) with feet (3) are visible and adjustable only by the tool shafts (1). The tool feet (3) have 4 6 5 4 0 2 suction cups (25) suitable for attachment to non-magnetic materials such as plastics, stainless steel, wood, etc. The possible joints are commercially available type or of any custom construction.

The tool can be made of different types of material, even from a mixture. Examples of such are plastics, metal alloys, suitable metals, wood, etc. When joints are mentioned, they mean, for example, ball joints, leder visible joints, shaft joints or fi joint joints. The friction joint can be of the type with grooves and elevations on each joint part which engage each other and thus have adjustable distinct positions. All joints should preferably be adjustable in distinct positions. The end members can have any shape, for example spherical, cubic, bowl-shaped, round, square, rectangular, irregular, etc. The shape of the shaft is also optional. The end members may consist wholly or partly of magnets (perrnannet magnets, electromagnets), they may also consist wholly or partly of vacuum suction devices (suction cups which can be actuated by hand (directly, indirectly), or of air pumps). To sum up: the tool is designed in such a way that the end members and the shafts with suitable symmetrical shaft connections are connected via joints (machine elements), that the joints preferably have lockable positions, for example by means of stop screws, joints with built-in distinct positions snap couplings or with other known locking devices. that the shafts are adjustable (adjustable) via joints, plug sleeves, telescopic devices or sheath devices, that the shafts can branch where the branches are articulated connected to end members, that support means, lifting loops and handles can be arranged on the shafts or joints.

In conclusion, it is pointed out that embodiments of the tool shown here are only conceivable within the scope of the claims and not necessarily preferred.

Claims (6)

463 402 Patent claims Tools for positioning and holding workpieces (20,2l) when joining them, especially when only one of the respective surfaces of the workpieces is freely accessible and where any of the workpieces (21) can be positioned in depth and sideways in relation to another workpiece (20), the tool has tool shafts (1), which at their respective ends are hingedly connected to tool feet (3) of any shape and that the joints (5,9,12,24) are equipped with a mechanism (6,10, 11,13,14) for adjusting the feet (3) in distinct positions relative to the shafts (1), and that the feet are interchangeable, that the tool feet (3) on one and the same tool have between them tool feet (3) of vacuum suction (25) type , or with magnet (4) type, or a combination of these, characterized in that the shafts are telescopically connected to each other and 3600 rotatable, via joints attached to the shafts and freely adjustable in the position allowed by the physical extent of the tool ie almost spherical, that the tool can use can be attached to both magnetic and non-magnetic workpieces or a mixture of these. 2. A tool according to claim 1, characterized in that the tool feet (3) are provided with threads, internal or external thread (16), or with quick couplings he or she part. Tool according to Claim 1, characterized in that the joints are ball joints (5, 9, 12) with recesses (pits) (10) and provided with threads, internal or external threads, or with quick coupling, he or she part, where pins (11) engages in the recesses (10) so that the tool shafts (1) and the tool feet (3) can be held in varying positions relative to each other, the pins (11) have locking devices (6, 1 3, 17, 1 8). A tool according to any one of the preceding claims, characterized in that if the tool feet (3) are provided with vacuum suction devices (25) that these are of the type where the vacuum is created during application, directly or indirectly by a marten shoe hand, e.g. ), or pneumatic or hydraulic device, or if the tool feet (3) are provided with the magnets (4), that these are permanent magnets (4) or electromagnets. Tools according to claim 3, characterized in that at least one of the tool shafts (1) is provided with an adjustable support device for fixing the workpieces in a common plane and / or a support device for preventing tipping of edged workpieces. i -a " Tools according to claim 5, characterized in that the tool shafts (1) are provided with fittings for use in connection with lifting work, eg lifting eyes.