DE29920651U1 - Conversion bracket for oscillation machines with accessories - Google Patents

Description

Conversion holder for oscillation machine with accessories

The invention makes it possible to convert a commercially available oscillating machine with accessories in such a way that both sawing work similar to a jigsaw or sabre saw and cutting work with straight blades of various designs can be carried out; in particular, the tool enables the problem-free cutting out of windshields on cars and the removal of rubber/adhesive residues.

The invention was based on the idea of opening up new areas of application and perfecting existing ones for the relatively expensive oscillation machines, which are used, for example, in car workshops (equipped with curved and angled blades) mainly for cutting out windshields.

The invention is based on the commercially available oscillation machines (1), operated electrically or with compressed air (1a=compressed air hose), and on the additional holder (2) according to the German patent DE 195 31 270 A1. This time, the additional holder is not used along the machine axis, as described there, but at a right angle to it. This is easily possible due to the ring with internal spline (3) used. Starting from this initial state, the conversion holder with accessories was developed and consists of the following individual components:

1. Instead of inserting the knife directly into the additional holder, another fastening part is inserted, which is designed as a sleeve (4) to hold the knife shaft. The knife can be fixed with one or two bolts (5), depending on the area of application. If only the larger bolt is inserted, only the forward and backward movement of the oscillation is transmitted, since the bolt compensates for the lateral movement of the oscillation like a joint. If the second bolt is also used, this effect is eliminated and the movement is fully transmitted to the knife as a forward and backward and lifting movement. The prerequisite is that there is sufficient play in the guide sleeves (4, 4a, 4b).

2. Depending on the application, different knives/saws

Cutting blades (8)
Paring knife (9)
Metal saw blades (10) and
Saw blades for plastic and wood (11)

inserted into the guide sleeve (4).

3. The main component of the conversion bracket (7) has the task of holding the guide sleeve (4a, 4b) in the correct position to accommodate the knives/saws, so that a straight and stable run is achieved. Since the conversion bracket is screwed to the side of the machine facing away from the holder, it is guided to the correct position via two right angles, the latter rotated by 90 degrees.

4. The cutting blade (8) is used to cut out car windows. It is applied from the inside while the machine is running and cuts through the

Rubber/adhesive without the need for prior piercing with another tool. The adjustment with stroke (two-bolt fastening) is ideal for this task.

5. Using the scraper knife (9), the remaining rubber/adhesive is removed. To do this, place the cut-out end of the guide sleeve (4b) against the body and slide it around the opening.

6. The metal saw (10) differs from the patterns used for jigsaws only in the guide sleeve used.

7. The wood saw (11) runs in a long cut-out guide sleeve. This ensures stability against lateral deviations. The interlocking of the teeth exceeds the width of the guide sleeve, so that the cutting width is not affected.

Summary

The position with stroke is only very suitable for the cutting blade for removing windshields and for the paring blade for cutting off the remaining rubber/adhesive. A significant improvement on the previous working method is achieved. Damage to the bodywork is minimized and the blades do not break off so easily.

The stroke setting is not suitable for the other blades. In contrast to jigsaws or sabre saws, the sawing process is much quieter with less noise and less dust.

It would make sense to market the product in regular tool shops, where oscillation machines are also available. In particular, all owners of such machines are potential customers.

Claims (8)

1. Conversion bracket for oscillating machines with accessories, characterized in that the fastening part ( 4 ) fixed via the oscillating holder ( 2-3 ) is designed as a sleeve for receiving a knife or saw shaft. 2. Conversion bracket according to item 1 , characterized in that the cutting/sawing tool ( 8 , 9 , 10 , 11 ) to be inserted into the fastening part ( 4 ) can be fastened with one bolt ( 5 ) to produce a pure forward and backward movement, or with two bolts ( 5 ) to produce an additional stroke. 3. Conversion holder according to the preceding claims, characterized in that the main component of the conversion holder ( 7 ) is screwed to the housing of the oscillating machine and is bent over two right angles so that the guide sleeve ( 4a ) fixed at the other end is held in the correct position for guiding the knives/saws, so that a straight and stable run can be achieved. 4. Conversion holder according to the preceding claims, characterized in that the cutting blade ( 8 ) is guided in the guide sleeve for a relatively long time for reasons of stability and protrudes only slightly. 5. Conversion holder according to the preceding claims, characterized in that the paring knife ( 9 ) is completely guided in the guide sleeve and only protrudes on one side at the front end. 6. Conversion holder according to the preceding claims, characterized in that the metal saw ( 10 ), in contrast to jigsaw blades, is held in shape by a short guide sleeve. 7. Conversion holder according to the preceding claims, characterized in that the wood saw ( 11 ) runs in a long guide sleeve which is predominantly recessed at the front end. 8. Conversion holder according to the preceding claims, characterized in that the teeth of the wood saw ( 11 ) are interlocked in such a way that the width of the cut-out guide sleeve is exceeded.