DE1992332U - Thundering boring tool with stationary guide for boring, countersinking, reaming and fine boring of holes - Google Patents

Description

JULIUS PAERSCH VDI advises 4% 4 IUU IH. D.QO., \

08E (IlNGtNlEUIl '.

Julius P a e r s c h Asbach Ww *

Centering drilling tool with stationary guide for boring, countersinking , reaming and fine boring of holes

The invention relates to a ·:. Drilling tool and indeed of such kind, WIEF of metalworking machinery z * B, 'stand-.and radial · "■ drills or boring, aber.auch of automatic tool **

machine tools are used. - '7?

The main purpose of the present invention is to create a <*> new, simple effective universal drilling tool, with WEL ijj brass, it is possible the difficulties previously frequent - "opportunities in the production of holes to eliminate workpiece bores especially for long *. These difficulties include, above all, the running of bores and out-of-roundness. as a result of the tool bending due to various material or machine, but also tool-related causes. White ^ I | Other difficulties are the damage to the finished hole * j due to frequent sticking of the conventional tools. j

Furthermore, a tool should be created, which bezw for both 'boring'. Countersinking can also be used for fine boring and reaming. Likewise should; the use in different . $, size ranges in relation to the bore be possible * ^f

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It is an important feature of the invention that the tool J bearing spindle in a long guide directly behind the big square

borrowed cutting tool 'play-free and avoiding any war X : - 1 ν--. ,.

Me development, centrally mounted, the tool exactly axially and holds in the center of the hole, which means that the central hole path is inevitable, even with deep holes is. It is also safe to cut the Tool guaranteed both during boring as well as countersinking and reaming as well as fine boring »

The invention illustrated provides 3 depending on the bore size of interchangeable guide strips in front of which in order to avoid any play on the periphery of the guide body, are adjustably mounted _0th

The spindle is formed so that a central cooling can be steered directly directly to the tool cutting edges, thus greatly contributes to increasing the service life of the tool cutting edges and thus to ^v ermeidung tool breakage "

The inner space of the guide body is closed by seals "

Declaration of drawing : ■■

Figure 1 is a cross section on the line AB of Figure 2, Figure 2 is a view from above,
Figure 3 shows the side view.

The drawing shows in the details: The work spindle is identified by the number Λ , which is used to hold the interchangeable tool carrier 2 »The work spindle 1 receives its drive via the indicated" and ■ connecting rod 3, which is pivoted in the respective machine spindle, and is over 2 needle bearings 4 and 5 centrally mounted in guide body 6 »,

In the guide body 3 inclined grooves 7 offset by 120 ° are attached to the circumference, in which the 3 are wedge-shaped on the inside Base strips 8 are housed. The basic bars

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form with the in alignment with the respective bore diameter knife exchangeable guide bar 9 a closed aisle

"f zes, which by means of a threaded bushing 10, which is provided with a circumferential groove 11 and in which the base strips 8 engage, is adapted to the drilled diameter without play. This resting, at least 2 χ d long and therefore from the original" Lent cutting process independent guidance, it is prevented during the entire drilling process that the cutting tool carrier 2 deviates from the axis of the hole cut into the workpiece W. The guide strips 9 are received on the cylinder ... ^, bar 8 by d * §i endless spiral springs 13 *

The connections of both tool carrier 2 and the working < spindle 1 takes place via a short taper 14, the tightening of which is in turn by a fine-thread attachment 15 with pre-centering pin " 16 took place. *

The use of the Y / e tool therefore proceeds as follows: Introduce the? / Tool and set it free of play in $ f of the drill bushing 17 <> Then the tool cutting edges are applied Workpiece W with the tool running and then switching on the L feed. Upon reaching the drilled hole through the Guide body then takes over the latter, as shown in the drawing, die'zentrale play-free guidance of the tool ^ through the entire hole.

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Claims (2)

After the above description of the invention, I hereby apply to L for a patent to be granted 1. a drilling tool for boring or. Reaming and fine "^ drilling holes, characterized in that the tool -. '> Χ in a stationary guide having a length of at least 2 d and mounted close to the cutting edges centrally is" il 2. Drilling tool according to claim (1), characterized in that DAS ^v 'same by changing the with a central cooling capability' / provided the tool carrier (2) both for drilling and Λ for lowering, rubbing may be as well used for fine drilling. " 3ο drilling tool according to claim 2, characterized in that DAS u \ same one has (18) provided ^ 'central cooling system (19) to pressure loss with a seal which in direct toward> / heat generation by the two beam openings (2O, 2i ) the two rotating tool cutting edges ^ 22,23) at the same time un- broken with direct impact cools and at the same time the an- ^ with ' ",."·- falling chips / washes away «- _> ^ 4-. Drilling tool according to claim 1, characterized in that the guide body ^l (6) for the purpose of play-free axial alignment ι the center of the hole with 3 adjustable combination Führungslei- ^ sten which centrally press against the bore wall, provided> is ο 5 · Boring tool according to claim 4, characterized in that the adjustable combination guide rails made of 2 parts (8,9) stand, which means an adjustment to the respective bore diameter is possible. . .- "λ VJSSa. ■ 6. Drilling tool according to claim 1 and 5 * characterized in that de the lugs of the base strips (S) in the circular groove (11) of the ge | The threaded bushing (10) intervenes without play, which means that the bevel ' \ the base bar (8) or in the guide body (6) the play-free *? Centering resp. axial guidance of the tool is given. Ί