DE8513848U1 - Milling or drilling machine with a chip and splash protection in the form of a shield - Google Patents

Description

Authorized representative at the European Patent Office European patent attorneys

HANS LANQOSCH Dlpl.-Ing. (1963-19Θ1) Uwe dreiss

Dr. Jur., Dlpl.-Ing.! M. Sc.

Heinz hosenthien Dr.-Ing., Dlpl.-Ing. JÖRN FUHLENDORF DIpI.-Ing.

DREISS, HÖSENTHI ^ N & FUHLENDORF, D-7ÖÖÖ STUTTGART 1

Applicant:

Official Act. Z. Off. Ser. No.

Gerhard Heubürger Scheckweg 11 7U41 Kohlberg

Your reference Yoür Ref.

Our mark Our Ref.

3017 001

D-7000 STUTTGART 1 QEROKSTRASSE 6 TF (0711) 24 57 34/44 TG IDEAPAT TX 7-22 247 Idea d

for visitors

date Date

23404 * 1985 · H / ma

Title: Milling or drilling machine with a chip and splash protection in the form of a shield

The invention relates to a milling or drilling machine with a tool bearing in a spindle head mounted, vertically running work spindle and a chip and splash protection in In the form of an at least partially transparent shield.

It is known in milling and drilling machines to protect the operator on a cantilever arm to arrange pivotally attached shield. The position of the shield must be after each

Postal check account Stuttgart 50771 -705 (BLZ ÖQQ 1θΙ) .7Λ) -DresdnarBenk'slultsa'rt1 '919854 (BLZ 60080000)

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Workpiece and tool changes made again

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|. and often corrections are possible

required and are sometimes not carried out, so that an unsatisfactory one Protection of the operator can occur.

The object of the present invention is to *> in avoidance of the disadvantages described,

if a milling or drilling machine of the initially

% 10 mentioned type so that with ] simple operation an effective protection

is achieved.

To solve this problem, the invention provides that the shield has at least one Guide rod between a shielding the tool and the workpiece to be machined Protective layer and a maintenance layer that makes the tool and the workpiece accessible is movable. By running the

Shield over at least one guide rod the end positions of the sign can be admitted again and again, reproducibly and precisely,

t 'so that with a one-time first adjustment

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Later you no longer have to pay attention to the exact setting, so that an optimal Protection is guaranteed with easy handling. An optimally low weight for This can facilitate handling

can be achieved that the shield on the lower \\

End of the guide rod or to the lower Ends of several guide rods is attached and the guide rod or guide 0 Rods can be moved in one or more guides attached to the spindle head are led.

A drive can be provided particularly advantageously for extensive automation through which the shield can be moved between its possibly adjustable end positions. To the Setting the end positions, limit switches can be provided, which are expedient

can be actuated by means of adjustable end stops provided on one of the guide rods are.

In another embodiment, at least one of the guides can be one at the same time

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Be a drive for one of the displaceably guided guide rods, so for example. One of the Guide rods can be a rack and the drive is a meshing one in this rack Pinion, this pinion then being controllable by a drive or gear motor. In the case of an automated milling or drilling machine, the drive can be combined with the other Controllers are coupled so that the shield in its at the beginning of a work cycle Protection division brought and automatically in the Maintenance situation is postponed.

A flexible belt in the form of a rope can be used as the drive, which is particularly easy to adapt. a chain or the like. Serve, the free end of which is connected to the shield and the

is guided over a drive roller, which is attached to the I '

or can be provided above the spindle head. The drive roller can have a Gear motor driven at the desired adjustment speed. The drive

itself can be adjusted for easy adjustment by means of 25

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a carrier be attached to the spindle head.

To achieve optimal protection against splashing water or being thrown off Chips and also in the event of a tool break, the shield can have vertically directed walls, which shield the tool and / or the spindle head in an approximately U-shape.

Zf. to increase the safety of the operator k = can actuate at least one limit switch directly or indirectly through the shield be through which the machine drive can be locked, so that the tool only at lowered shield is drivable.

To adapt to workpieces of different sizes, the distance between the shield can be adjusted from the tool axis can be adjusted.

To facilitate handling, the drive can also provide a counterbalance for the Shield and the associated guide 5 rods, then the shield

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can be moved by hand. The "drive" is then designed as a pure brake The shield can be locked in any position chosen by hand.

Further designs according to the invention can be found in the subclaims and are included with their advantages are explained in more detail in the description below. In the attached drawings show the

Figure figure

a partial front view of a drill with the shield in the protective position;

a side view of the illustration of Figure 1 and

figure

a plan view at the level of the line III-III in Figure

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When a drilling machine is only partially shown, a spindle head 1 carries a tool 3 with a vertically extending tool axis 4 in a work spindle 2 has two guide rods 7, 7 ·. At the lower end of the guide rods 7, 7 ¹ , a plate 9 made of transparent plastic is attached to a block 8, which, as can be seen in Figure 3, the tool 3 and the. Spindle head 1 is U-shaped shields _s so that the ejection of chips and cooling liquid, at least in the direction of a stationary front of the machine operator, at least in the lowered position of the protection plate is prevented. 9 In order to allow good accessibility to the tool 3, the shield 9 is through the guide rod! 7, 7 'guided in the guides 6, 6', can be brought up into a maintenance position. This movement can be controlled and limited by limit switches 10, 10 ', as indicated in FIG.

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indicates is. The movement of the shield 9 takes place, for example, via a flexible belt 11 and a
Drive 13 accommodated in a housing 12 arranged on carrier 5.
5

By the limit switch 10, the lifting movement of the shield 9 is terminated upwards, while
through the limit switch 10 'and an adjustable stop 14, the lower end position of the

Shield 9, the protective position of which is set. To move the shield 9 by hand, a handle 15 can also be provided, on the bolt 16, 16 'of which the block 8 for adjustment
the distance of the shield 9 from the tool axis 4 in the direction of the double arrow 17 is adjustable in order to achieve the best possible protection for different tools and workpieces to be processed and to be able to create sufficient space for necessary clamping devices.

- End of description -

Claims (1)

r » ι ι ι ι • · ι ι Expectations 1. Milling or drilling machine with a tool (3) carrying a spindle head (1), vertically running work spindle (2) and a chip and splash protection in the form of an at least partially transparent shield (9), characterized in that the shield (9) has at least one guide rod (7, 7) between a protective layer shielding the tool (3) and the workpiece to be machined and a protective layer for the tool ( 3) and the maintenance position making the workpiece accessible is displaceably guided. 2. Machine according to claim 1, characterized in that the shield (9) at the lower end of the guide rod (7) or at the lower ends of several Guide rods (7, 7'0 is attached and the ί Guide rod (7) or rods (7, 7 ') in one or several attached to the spindle head (1) Guides (6, 6 ') are slidably guided. * suffered * t «III * ·· ■ · »ill · · fri ·· · · 11 * 1 *> Kl - 10 - 3. Machine according to claim 2, characterized in that a drive (13) is provided through the the shield (9) can be moved between its optionally adjustable end positions. ¹ ^. Machine according to Claim 3, characterized in that limit switches (10, 10 ') are provided, by means of which the end positions of the shield (9) or the guide rods (7, 7) can be adjusted. 5. Machine according to claim 2, characterized in that at least one of the guides (6, 6 ') at the same time has a drive (13) for moving the guided guide rod (7, 7 ^f ). 6. Machine according to claim 5, characterized in that that one of the guide rods (7, 7 ') is a rack and the drive (13) is one in this Has rack meshing pinion. 7. Machine according to claim 3, characterized in that that a flexible belt (11) is used as the drive (13), the free end of which is connected to the shield (9) and that is done via a drive roller * * 4 # # 4 4 · 4 it 4 i <44 * * * β έ 4 ti t «4 · * *« «if» · i I It M MH% * · » t t I <· t · · * N t r r? * it * (te M ♦ · * · · · »· - 11 - leads, which is provided on the or above the spindle head (1). 8i machine according to claim 7 j characterized j that the drive roller can be rotated via a gear motor. 9. Machine according to one of claims 3 to 8, characterized in that the drive (13) by means of a carrier (5) is arranged on the spindle head (1). 10. Machine according to one of claims 1 to 9, characterized in that the shield (9) is directed vertically Has walls and the tool (3) and / or the spindle head (1) shields approximately U-shaped. 11. Machine according to one of claims 1 to 10, characterized in that through the shield (9) directly or indirectly at least one limit switch (10, 10 ') is actuated through which the The machine drive is locked so that the tool (3) can only be used when the blade (9) is down. is drivable. l lit · «4« · «· tI ·,, «Lit * A« # » << ft ·· · - * * 1 2 12 »Machine according to claim 11, characterized in that that the limit switch (s) (10, 10 ') can be adjusted by at least one on the guide rod (7) arranged stop (14) - is switchable. * Machine according to one of claims 1 to 12, characterized in that the distance of the Shield (9) from the tool axis (4) can be changed. 14. Machine according to claim 3, characterized in that the drive (13) has a weight compensation for the shield (9) and the associated guide rods (7, 7 '), and that the Shield (9) can be moved by hand, the drive (13) being designed as a pure brake, for locking the shield in any position selected by hand. - End of claims -