DE8406105U1 - Guide device for processing curved workpieces, in particular in milling machines for woodworking - Google Patents

Description

description

The invention relates to a guide device for Machining of curved workpieces in machine tools with rotating tools, in particular Milling machines for woodworking, with a flat stop bow that can be adjusted relative to the tool, in which a through hole for the tool drive shaft is incorporated.

In known guide devices of this type, the plate-shaped stop arch is fastened to two vertical guides by means of a locking block extending transversely to the direction of adjustment, which are connected to one another by a wall. For the horizontal adjustment of this wall and thus the two vertical guides, an adjusting device is used, the adjustable part of which is fastened to the wall and the housing of which is fastened to the tool-machine table. This known device has the main disadvantage that it takes up a considerable amount of space due to the two parallel vertical guides and because of the adjustment device behind the two vertical guides, which is why in particular the internal machining of workpieces with small fiadien is not possible. Furthermore, the height adjustment of the stop bow is relatively complicated, since two screws have to be loosened for each adjustment. Furthermore, at least two threaded holes in the machine table are required for fastening the adjustment device on the machine table.

The invention is based on the object of providing a guide device of the type outlined at the beginning to improve that this takes up as little space as possible

4 4 * III II4I «

I »« I · llll «f · · · ·

t ί "} · {!! ί S ί II

Kl M <<

dd

SS!

8 1 »

β »tIt ♦

stressed and thereby also enables the internal machining of workpieces with small radii.

According to the invention, this object is achieved in the initially explained guide device in that the stop arch is continuously adjustable in height on a vertical support column, which on the machine table is adjustable.

Since the support column has a relatively small cross-section within the framework of the necessary stability, results a narrow yet adjustable device for attaching the stop bow, so that workpieces with small radii can also be machined on the inside. It also opened the vertical Support column allows you to attach other elements required for processing to it.

According to one embodiment of the invention, an anchoring plate can be detachably attached to the lower end of the support column be attached, which has means for attachment to the machine table.

Instead, however, it is also possible that the lower end of the support column is attached to a horizontal support arm is releasably attached, which is mounted adjustable in its longitudinal extent in a guide rail, has the means for attachment to the machine table.

The holding arm can carry an adjusting nut adjustable in its adjusting device on a horizontal thread extension, which is cut through a slot machined into the guide rail and running transversely to the Einatellriöhtung with a width of the adjusting nut.

ft tit I «· · ·

I> I II Il I t

••• III Il I < I <·

• lllll 41 «·

• t Il I »III Ι · · Ι ·

The corresponding width protrudes outwards »This adjusting nut allows a fine adjustment of the holding arm and thus the supporting column attached to it with the stop arch.

In a further development of the invention, the guide rail has a U-shaped profile with an upper one, the two vertical ones U-leg connecting web, in which a longitudinal slot for the passage of at least two clamping screws is incorporated, one of which is a clamping hood in a vertical threaded attachment of a suspension block is screwed in, the horizontal on a guide bracket attached to the machine tool and is fastened adjustable at right angles to the direction of adjustment of the holding arm.

The fixing of the guide rail is next to the clamping screw Only one more clamping screw is required in the hanging block, which is inserted into a threaded hole of the Machine table is screwed in.

If the thread attachment is cylindrical and grips with play through a longitudinal seat in the holding arm, it is possible to move the holding arm in any direction to swivel so that, depending on the space available, it can also be tilted over the tool-machine table can run.

According to a further feature of the invention, the stop bow has on its opposite to the work area End of a bracket, which is adjustable with its vertical leg by means of a vertical Clamp is attached to the support column.

This type of attachment can be solved easily and quickly, so that without the aid of tools

■ it ** «· it t t 4 *

ti * 4 ι I ti I

* <· I «II III Ι · i» ·

Height adjustment and replacement of the stop bow possible are,

In a further development of the invention it is provided that the Clamp a clamp wall pressing the vertical leg of the bracket against the support column, two of r this protruding at right angles and surrounding the support column

, gripping legs as well as one connecting them to

Clamping wall has parallel rear wall into which a clamping screw acting against the support column is screwed

is.

In this design, a stop element can be detachable at one end of a circular arc-shaped swivel rail be attached, which runs through incorporated into the two legs of the clamp window and can be pressed against the day column by means of the clamping screw screwed into the rear wall of the clamping bracket is. In this way, both the stop bow and the stop element can be operated by means of a single clamping screw be fixed in the desired position.

The run-up element can be a run-up bar or a run-up cylinder.

In further utilization of the support column, it is possible to adjustably attach a protective hood for the rotating tool, which is closed at the top and in the adjustment direction of the holding arm. Here, too, an easy and quick-to-use clamp fastening is advantageously used.

The support column also offers the possibility of your upper end an inlet funnel of a suction belt by means of a support arm that can be swiveled in all directions adjustable to fasten. The inlet funnel can be fixed in the optimal position, see above

I I I I I # Ϊ # 11 I

11 · Il Il · <·! · ···

., ti ..- .. L .i ^ ι i <

because the chips generated during machining of the workpiece are thrown exactly into the feed hopper,

• I

Another feature of the invention has the Inlet funnel on both sides, one with bristles Deflector equipped for the passage of workpieces.

Further features and advantages of the invention emerge from the remaining subclaims and from the friction of embodiments shown in the drawing.

Ss show:

Figure 1 is a perspective view of a guide device according to the invention,

Figure 2 is a perspective side view of the guide device,

FIG. B shows a longitudinal section through the guide device, FIG. 4 shows a plan view of the guide device,

FIG. 5 shows a partial longitudinal section through the inlet funnel,

Figure β is a schematic representation of the soft «tzhaobe, f

Figure? a detail of a variant in the '| Cut, 3 ^:

Figure 8 is a plan view of the anchor plate used in Figure 7 and

FIG. 9 shows a side view of a further variant in which a start-up cylinder is used as the start-up element.

* · * 44. · ί 9 4

* * * »4. till

■ 12- · »··» M * n 'it'ii'

1 shows a Masehinentisöh 10 of a milling machine for wood processing, on its vertical edges a guide bracket 14 is screwed on. On these leadership, A U-shaped suspension block 16 is attached to bracket 14 and fastened by means of a clamping screw 18.

As FIG. 3 shows, the suspension block 16 has at its upper end a vertical threaded projection 20 which is cylindrical. The threaded attachment 20, together with a clamping screw 22 screwed into it, serves for the adjustable fastening of a guide rail 24 above the machine table 10.

In the guide rail 24, which has a U-shaped profile with an upper web 28 connecting the two vertical U-legs 26, in which a longitudinal recess 30 is incorporated for the clamping screw 22 and another clamping screw 22 * to pass through, there is a holding arm 32 mounted displaceably in its longitudinal extension, a longitudinal slot 34 parallel to the longitudinal slot 30 is incorporated into the holding arm 32, through which the cylindrical threaded projection 22 runs with play. By tightening the clamping screw 22 , the guide rail 24 is clamped against the top of the threaded attachment 20 of the suspension block 16, so that it is fixed in its desired position - together with the further clamping screw 22 '- while the holding arm 32 remains movable in its longitudinal extension.

To adjust the holding arm 32, it carries a knurled adjusting nut 38 on a horizontal threaded extension 36, which is inserted through a slot that is worked into the guide rail 24 and runs transversely to the adjustment direction indicated by the double arrow A

Im i tilt tiiii

3 -. · I * i ü: · j; ι

protrudes outwards. The width of the slot 40 corresponds with the table of .Einste 1! mother 38, see above that by turning the adjusting nut 38 of the retaining arm 32 In the direction of the double arrow A relative to the clamped guide rail 24 can be adjusted.

On the end of the holding arm 32 that is further away from the suspension block 16, a screw 42 is provided with a vertical support column 44 attached with a square cross-section. This support column 44 is the central support element the device, on which a large number of elements by means of particularly simple clamp connections can be fixed. This will be discussed in more detail below.

At the lower end of the support column 44 is a flat stop bow 46 with a circular through hole 48 for the tool drive shaft 50 attached. For this purpose, the stop bow 46 has at its work area, which is characterized by a stop mark 52, opposite end a bracket 54 on «This is with a vertical leg 56 by means of a vertically adjustable clamping bracket 56 attached to the support column 44. The clamping bracket 58 has a vertical leg 56 against the support column 44 pressing clamping wall 60, two from this protruding at right angles and the support column 44 encompassing legs 62 as well as a connecting foot 64, parallel to the clamping wall 60, into the ice against the support column-44 acting clamping screw 66 is screwed in »

After loosening the clamping screw 66, the holding Slightly remove bracket 54 and with it the stop arch 46 and replace it with a stop arch 46 of different dimensions. The new stop arch 46 is

then so between the support column 44 and the Klemrawa ^ d 60 of the clamp ^ 53 set that an upper paragraph 68 of the vertical leg 56 is seated on the upper side of the belt wall 60.

By means of the clamping screw 66, together with the Ansehlagbogen 46 clamp a stop element to the support column 44 in a single handle, for example a trapezoidal run-up bar 70 or a run-up cylinder 72 (FIG. 9). The starting element is releasably attached to the lower end of a holding cylinder 76 by means of a clamping screw 74, which at one end of an arc-shaped swivel « rail 78 is attached. The pivoting rail 73 runs through into the two legs 62 of the clamping bracket S3 incorporated window 30 and is screwed into the rear wall 64 of the clamping bracket 58 by means of the The clamping screw 66 is pressed against the support column 44.

After loosening the clamping screw 66, not only can the soling arch 46 be adjusted or adjusted in height solve, but it can also the stop bar 70 or the stop actuator 72 can be pivoted over the pivot rail 78 and adjusted in height.

The stop bar 70 can also be rotated at the end of the pivot rail 78 by means of the clamping screw 74 and - via an elongated hole 72 - adjust in the longitudinal direction, in order to achieve the optimal position in relation to the Aßsöhläg & ögens 46

j The stop bar 70 has the purpose of being processed

\ Workpiece 84 securely against the stop arch 46

■ lead.

When machining workpieces with small radii of curvature, after loosening the clamping screw 74

the run-up bar 70 is replaced by the run-up cylinder 72, which according to Figure 9 reaches close to the top of the machine table 10, so that it is prevented that very thin workpieces between the slide through the lower end of the holding cylinder 76 and the top of the stop table 10.

In the case of thicker workpieces 84, the attachment of the stop cylinder 72 can be dispensed with.

A protective hood 86, closed at the top, for the rotating tool 88 and its drive shaft 50 is attached to the support column 44 above the stop arch 46 and above the stop element 70 or 72. The upper side of the protective hood 86 merges into a protective cap 90 which is also closed at the top and which extends with its front edge 92 in the adjustment direction of the holding arm 32 to close to the front edge 94 of the protective hood 86. As FIG. 4 in particular shows, the protective cap 90 arranged in this way asymmetrically on the protective hood 86 is elongated in contrast to the cylindrical protective hood 86. With these measures it is possible, even with small diameters of the tool 88, to adjust the protective hood 86 as far as possible towards the support column 44.

The protective hood 86 and the protective cap 90 formed in one piece with it consist of a transparent one Material, preferably a plastic drawn part, like this that the operator can watch the milling process.

Figure 6 shows schematically that the lower edge 96 of the Guard 86 is beveled so that its area at the front edge 94 is lower than the rest Part of the edge 96. In this way, the workpiece 84 can be comfortably under the lower one from the side

ti ti Ii

! · ■; Li. I Ih ¹ Ml ¹ "

-. 16 -

96 of the protective hood 86 while it is in the work area, the one at the front edge 94 of the protective hood is characterized by an additional marker 98, pressed against the top of the machine table UO will. The inherent elasticity of the suspension system of the protective hood 86 is sufficient for this.

On the side of the protective hood 86 facing the support column 44, it has a bracket TOO, of which two parallel, horizontal and in cross-section rectangular support arms 102 protrude, which the support column 44 on comprise two pages. The support arms 102 run through rectangular windows 104, which are divided into two parallel, the support column 44 on the other two sides comprising retaining plates 106 of a clamping bracket 108 are incorporated. The clamping bracket 108 has a clamping screw 110 for fixing the set Position of the protective hood 86. The windows 104 of the two holding plates 106 are wider than the support arms 102, so that after loosening the clamping screw 110, the clamping bracket 108 releases the support arms 102, so that they can be adjusted in height. At the same time there is also a horizontal adjustment the support arms 102 and thus the protective hood 86 possible, so that this clamp attachment also has a multiple effect Has.

An inlet funnel 112 of a suction device is adjustably attached to the upper end of the support column 44. A cantilever arm 114 is used for this purpose, which is attached to a cylindrical pin 120 at the upper end of the support column 44 so that it can pivot on all sides by means of a clamping joint 116 and a clamping screw 118.

For the sake of better overlooks, in the top

* * «T« · nil ·

4 shows the cantilever arm 114 and the clamping joint 116 omitted.

The cantilever arm 114 is via a further clamping joint attached to a pin 126 on the upper side of the inlet funnel 112 so as to be pivotable on all sides with a clamping screw 124 .

After loosening the two clamping screws 118 and 124 can the inlet funnel 112 can be pivoted and adjusted into any position.

In FIG. 5 it is shown that the inlet funnel 112 has a straight lower edge 128, which tapers to its free Ende.hin pointed and elastic against the machine table 10 can be pressed.

The inlet funnel 112 has one on each side with bristles 130 for the passage of workpieces equipped baffle 132, which is emptied horizontally displaceably in a rail 134 at the inlet funnel 112 is. The bristles 130 are made of an elastically flexible, relatively stiff plastic, preferably nylon so that the chips and wood flour generated in machining workpiece 84 are not can pass between the bristles 130, but is safely deflected into the inlet funnel 112 without to get caught on the bristles 130 or between them. Nevertheless, the workpiece can be guided easily 84 between the bristles 130 guaranteed through.

The design of the lower edge 128 of the inlet funnel 112 shown in FIG. 5 ensures that the sucked wood particles get into the inlet funnel 112 without being thrown under it.

Kl Ii Il <MM ··

· .. · S. ί 1! .. Ί Ι ίί "

I I Sill I I (I} I f J

·· tt it ·>

- 18 -

The variant of the guide device shown in FIGS. 7 and 8 is used primarily for internal machining of ring-shaped, closed workpieces with a small radius, which completely surround the support column 44 need to be shown around. This is instead of the retaining arm 32 with the integrated fine adjustment (adjusting nut 38} at the lower end An anchoring plate 136 is releasably attached to the support column 44 by means of the screw 42. For fixing on the Maso.hinentisch 10 has the anchoring plate 136 two parallel elongated holes 138 for the passage of two fastening screws 140 so that within the limits of the elongated holes 138 an adjustable fastening on the machine table 'OK is possible. On its upper side, the anchoring plate 136 has two centering lugs 142, which engage in corresponding centering bores in the support column 44.

If necessary, the anchor plate 136, as indicated by dashed lines in FIG. 7, can be attached converted by 180 °.

The described and illustrated guide device according to the invention combines despite the small footprint a multitude of functions, which, however, are effortless due to the multi-acting clamp connections can be adjusted manually in any direction without the aid of tools. the Guide device is particularly suitable for safe, economical and dimensionally accurate milling Curved, arched, ring-shaped and similarly shaped wooden workpieces.

M I Il Il I Il lld " I IfIIiI Il I ·! · 1

. ' ί 'ί ίί! ·

Together with the device for guiding workpieces according to patent application P 34 04 806.S by the same applicant, the guide device enables a fast and safe milling with a Verso lifting device. With the help of the hanging block 16 see how to attach the guide device to each masotoinentiseh 10 quickly and without tools. The universally adjustable feed hopper 112 ensures a chip and dust-free workplace.

Claims (1)

© IRHARD © USTQRF 'TEUW ^ W 19 PATENT ADVERTISER 8300 UVNDSHUT February 28, 1984 PH 1 447 Georg Aigner
8386 Thannenmais Guide device for processing arcuate workpieces, especially in milling machines for Woodworking ■ - / f η s claims 1. Guide device for processing curved workpieces in machine tools with rotating tools, in particular milling machines for woodworking, with an adjustable relative to the tool, flat stop bow, in which a through hole for the tool drive shaft is incorporated, thereby characterized, daft the stop bow (46) continuously adjustable in height on a vertical support column (44) is held, which is adjustable attached to the machine table (10). 2. Guide device according to claim 1, characterized in that the lower end of the support I «III 4 * 4 * I - 2nd column (IiH) is attached to a horizontal Hal tear »(32) which is adjustable in its longitudinal extent in a guide rail (24) which has means for attachment to the machine table (10). 3. Guide device according to claim 2, characterized in that the holding arm (32) on a horizontal threaded extension (36) one adjustable in its adjustment direction Adjusting nut (38) carries the transverse through a machined into the guide rail (24) to the adjustment direction extending slot (40) with a width of the adjusting nut (38) corresponding Width protrudes outwards. 4. Guide device according to claim 2 or 3> characterized in that the Guide rail (24) has a U-shaped profile with an upper, the two vertical U-legs (26) connecting web (28) in which a longitudinal slot (30) for the passage of at least two clamping screws (22) are incorporated, one of which is a clamping screw (22) in a vertical one Threaded extension (20) of a suspension block (16) is screwed in; the one on the machine tool attached guide bracket (14) horizontally and at right angles is attached to the adjustment direction of the holding arm (32) adjustable. D. Guide device according to claim 4, characterized in that the threaded attachment (20) is cylindrical and engages with play through a longitudinal slot (34) in the holding arm (32). t I ti * ι I «« · «» * II 111 til · · · Ti t ii «if t · ··· t ■ ♦ ι * 'i' i it 6. Guide device according to claim 1, characterized in that at the lower end of the support column (44) an anchoring plate (136) is detachably fastened, which has means for fastening & m Maschinentisoh (10). 7. Device according to one of the preceding claims, characterized in that the stop bow (H) has a bracket (54) at its end opposite the work area, which is connected to a vertical limb (§6) by means of a vertically adjustable clamping bracket (§8) is attached to the support column (44). 8. Guide device according to claim 7, characterized in that the clamping bracket (58) has a the vertical leg (56) of the bracket (54) against the support column (44) pressing the clamping wall (60), two from this projecting at right angles and the support column (44) encompassing legs (62) and one this connecting, to the clamping wall (60) parallel rear wall (64), in which one against the support column (44) acting clamping screw (66) is screwed in. ^. Guide device according to one of the preceding Claims, characterized in that a stop element is adjustable on the support column (44) for the workpiece (84) is attached. 10. Guide device according to claim 8 and 9, characterized characterized that the starting element from ' is removably attached to one end of a circular arc-shaped Sehwenkschiene (73) which through into the two Leg (62) of the clamping bracket (58) incorporated window (80) and by means of the in the rear wall (64) of the Clamping bracket (S3) inserted clamping screw (66) can be pressed against the support column (44). 11. Guide device according to claim 10, characterized in that »the start-up element by means of a clamping screw (74) at the lower end of a retaining clip attached to the pivoting rail (78) (76) is releasably attached. 12. Guide device according to claim 11, characterized in that the starting element is a run-up bar (70), which by means of the clamping « sehraube (74) is attached to the holding cylinder (76) so as to be pivotable and displaceable in the longitudinal direction. 13. Guide device according to claim 12, characterized in that the run-up bar (70) is trapezoidal. 14. Guide device according to claim 11, characterized in that the starting element is a start-up cylinder (72). 15. Guide device according to one of the preceding Claims, characterized in that on the support column (44) in height and in the adjustment direction of the holding arm (32) adjustable one above Tool (38) and the tool Anfcrie & swelie (SO) is attached. 16, guide device naeö Aasprtteft 15 »dadupch characterized in that the protective hood (86) for receiving the tool ^ drive shaft (50) it I · i 4. 4 d «· 4 4.4 4 4 4 J ··« · I ·· «« '14 I I - 5th at the top in a protective cap closed at the top (90) that deals with. their in one part » direction of the Haitearmes (32) front edge (92) to extends close to the front edge (94) of the protective hood (86). 17. Guide device according to claim 15 or 16, characterized in that the protective hood (86) and possibly the protective cap (90) are made of transparent material. 18. Guide device according to one of claims 15 to 1 ?, characterized in that the lower edge (96) of the protective hood (86) is bevelled in such a way that its area is at the front edge (94) is lower than the rest of the edge (96). 19. Guide device according to one of claims 15 to 18, characterized in that two parallel, horizontal support arms (102) with a rectangular cross-section protrude from the protective hood (36), which encompass the support column (44) on two sides and through rectangular windows (104) of two parallel, the support column (44) on the other two sides surrounding retaining plates (106) of a clamping bracket (108) pass through with a clamping screw (110), the windows (104) being wider than the support arms (102), 20. Guide device according to one of the preceding Claims, characterized in that on the support column (44) an inlet funnel (112) one Suction device is adjustable * 21. Guide device according to claim 20, characterized in that uef inlet funnel «« «« «F • J ♦« « , 1 y« « H' (112) by means of a cantilever arm that can be swiveled in all directions (114) attached to the upper linden tree of the support column (44) 1st. 22. Guide device naoh claim 20 or 21, characterized in that the inlet funnel (112) has a straight lower edge (128) has, which tapers towards its free end and elastically pressable against the machine table (10) is. 23. FühFungsvorriahtung according to one of claims 20 to 22, characterized in that the inlet funnel (112) has a deflector (132) equipped with bristles (130) for the passage of workpieces (84) on each side. 24. Guide device according to claim 23, characterized g e <indicates that the baffle (132) is horizontal is slidably mounted on the inlet funnel (112).