JPS63127881A - Portable machine tool - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The invention relates to a support plate with a passage slit, a tool located perpendicularly to the support plate and movable through said passage slit, and a support plate provided with a passage slit. and a parallel stopper guided by the parallel stopper.
The present invention relates to a type having two guide rods arranged at a distance from each other and fixedly tightened to the guide of the guide rods.

In hand-held machine tools already known from the prior art, guide rods have a circular cross section and are guided into corresponding holes in support plates. Such a guide rod is adapted to be fixed in the hole by a tightening screw.

PROBLEM SOLVED BY THE INVENTION The material and labor costs required for guiding and clamping as in known hand-held machine tools are relatively high. Nevertheless, the safety during operation is insufficient due to the parallel stop, which is fixedly clamped on one side. Moreover, the loaded stop is tilted and is, in effect, no longer sufficient as a guide element.

Means for Solving the Problem The measures taken to solve the above-mentioned problem are that the guide bar of the parallel stop is formed correspondingly to the guide bar.
movable in the guides of the support plate, the guides being connected by a guide passage, and at least one pressure element being fitted into the guide passage, using only one pressure element; In order to securely tighten both guide rods via the cam disk, which is directly crimped onto the guide rod, one end of the pressure member is pressed against the guide rod, and the other end is pressed against the cam disk. This is how it has become.

Effects of the Invention The advantage obtained by the invention is that a neat guide and safe tightening of the parallel stop is achieved by very simple means.

Due to the clamping of the pressure member acting on both guide rods and a loosely fitted cam disk, both guide rods are simultaneously tightened and tolerances are advantageously compensated for.

Advantageous embodiments and improvements of the hand-held machine tool according to the invention are possible by means of the measures specified in the dependent claims. Particularly advantageously, in order to achieve a cost-effective construction, the parallel stop is manufactured from a sheet metal with a bent leg as a guide bar and furthermore has a guide for the guide bar and a connection between the guide. A support plate is manufactured which has guide passages for the pressure elements, and these guide passages are formed by bridges, the bridges having a guide cross-section extending along the base surface of the support plate. or to the surface of the support plate.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A hand-held machine tool 1 with a supporting plate 2 has two guides 3.4, which are connected to the upper bridges 5, 6.
and is defined in a given cross section by the lower bridge 7.8. These two guides 3 and 4 are connected to a guide passage 9.
This guide passage is connected by guide 3.
4 is formed by an upper bridge 10 and a lower bridge 11. A pressure element 12 is received in such a guide channel 9, and a cam disk 14 is received in a corresponding extension 13. The pressure member 12 and the cam disk 14 bridge the distance between the two guide bars 15, 16 in the guides v3, 4. in short,
By rotation of the cam disk 14, both guide rods 15.1
6 are simultaneously tightened into the guides 3, 4. To stop the rotation, a hexagonal binding hole 17 is formed in the cam disk 14, and an angle spanner can be inserted into this hexagonal binding hole. When not in use, such an angle spanner 18 is held within two clips 19 on the surface of the support plate 2. An additional hand grip 20 is also fixed to the surface of the support plate 2. At the tool-side end of the support plate 2, the support plate has a passage slit 21 for the tool 22. The tool 22 is surrounded by a protective casing, which is formed by the bent part 23 of the support plate 2 and the covering cap 24. A suction connection pipe 25 leads into such a protective casing. A bearing and adjustment spindle 28 is mounted in the two bearing eyes 26, 27 on the support plate 2. The support and adjustment spindle is the adjustment head 29
and a spindle screw 30. Support arm 31
serves to receive the hand-held machine tool 1 and is fixedly fastened to the bearing and adjustment spindle 28. This is done by means of one clamping screw 32. The other clamping screw 33 securely clamps the spindle throat of the hand machine tool 1 into the opening 34 of the support arm 31 . The coil spring 35, which is inserted into the bearing and adjustment spindle 28, engages with its one free leg or leg 36 on the support arm 31. The coil spring 35 is supported on the cam disk 14 by the other free leg 37 . In short, the coil spring ensures that the hand tool 1 is always lifted by the tool 22 which is retracted by the workpiece in the rest position of the hand tool. Stop screw 38 can limit the depth of penetration of tool 22 into the workpiece. in this case,
The stop screw cooperates with a stop 39 on the support plate 2.

The guide rods 15,16 are part of the parallel stop 40. The guide rods 15, 16 are bent from a basic body made of sheet metal and are provided with reinforcing grooves 41. Furthermore, the guide bar 15.16 fits into the guide 3.4 both at the upwardly directed parallel stop 40 and at the downwardly directed parallel stop 40. The guide rods are also inserted into these guides r3.4 from different sides.

In short, four different basic positions of the parallel stop 40 relative to the support plate 2 are obtained. These basic positions are indicated in FIG. 4 by dash-dotted lines and the only solid line.

The spindle screw 30 engages in the threads of a nut 42 which is fixed to the support arm 31.

The safety disc 43 ensures the axial position of the bearing and adjustment spindle 28. Thereby, by rotating the bearing and adjustment spindle 28 via the adjustment head 29,
The position of the tool 22 can be finely adjusted in the direction of the guide 3.4.

The scale 44 on the guide rod 15 corresponds to the fixing mark 45 on the support plate 2.

In order to adjust the parallel stop 40 at the desired distance from the tool 22, the tightening of the guide rod 15.16 causes the cam disc 14 to
It is loosened by rotation.

The parallel stop 40 is then moved within the guides 3, 4 with its guide rods 15, 16.

To this end, a scale 44 indicates the stopping point. The guide rods 15, 16 are then fixedly clamped by the cam disk 14 and the pressure member 12. Next, fine-tuning through the testing stage
This takes place by means of a bearing and adjustment spindle 28 , by means of which the support arm 31 with the hand machine tool 1 and thus the tool 22 is adjusted relative to the support plate 2 .

[Brief explanation of the drawing]

1 is a side view of a hand-held machine tool according to the present invention, FIG. 2 is a sectional view taken along line II-II in FIG. 1, FIG. 6 is a sectional view taken along line Ill in FIG. The figure is IV-I in Figure 2.
It is a sectional view along the V line.

Claims (1)

[Claims] 1. A support plate with a passage slit, a tool located perpendicular to the support plate and movable through the passage slit, and a parallel stop guided by the support plate. the parallel stopper has two guide rods spaced apart from each other;
In the type in which the guide rod is fixedly tightened to the guide of the guide rod by the guide rod, the guide rods (15, 16) of the parallel stopper (40) are formed correspondingly to the guide rod. furthermore, the guides (3, 4) are movable within the guides (3, 4) of the support plate (2)
4) are connected by a guide passage (9), and in this guide passage there is at least one pressure member (12).
is inserted into the cam disc (1
4) in order to securely tighten both guide rods (15, 16) through the guide rod (15, 16).
A hand-held machine tool characterized in that the other end of the hand-held machine tool is adapted to be brought into contact with a cam disc (14). 2. The cam disk (14) has at least one pressure member (
12) in the extension (13) in the extension of the guide channel (9) and is provided with a collar, on which at least one of the guide channels (9) two pressure members (12) are engaged, whereby the cam disk (14) is held in the extension (13) and the cam disk in the direction of the guide passage (9) 2. Hand-held machine tool according to claim 1, characterized in that errors in the clamping device (12, 14) are compensated for by the movement of the plates, and the clamping position of the clamping device itself is ascertained. 3. The parallel stopper (40) is manufactured from a thin plate,
2. Hand-held machine tool according to claim 1, wherein the guide rods (15, 16) of the parallel stops are designed as bent legs with throats (41). 4. Guides (3, 4) for guide rods (15, 16)
and a pressure member (12) connected to the guides (3, 4).
) for bridges (5-8, 10, 11)
), which bridges limit the guide cross-section alternately towards the base of the support plate (2) or towards the surface of the support plate, thus limiting the guide cross-section (
3, 4, 9) are the bridges (5 to 9) of the support plate (2).
8, 10 and 11), each of which remains open on the opposite side. 5. The hand-held machine tool according to claim 4, wherein the support plate (2) is manufactured by die-casting. 6. The support plate (2) has been changed from a thin plate to a bridge (5 to 8
, 10, 11), respectively, to opposite sides and deform the hand-held machine tool according to claim 4. 7. Support plate (2) by swing bearing (26-28)
), and the guide rods (15, 1
6) The hand-held machine tool according to claim 1, which is capable of fine adjustment in the direction.