DE1710121U - EXTENSION SPINDLE FOR PNEUMATICALLY OR ELECTRICALLY DRIVEN SMALL GRINDING, TRIMMING AND POLISHING MACHINES OD. DGL. - Google Patents

Description

W761M81

Frankfurter Maschinenbau-Aktiengesellschaft Frankfurt a.m.-west

vorm. Pokorny & .Wittekind Solmssrtraße 2-26

ΪΡΑ / Br / Bar fOat 3—23)

far gaettmatlargk or

electric asgetrlebgB.g_glejAgghleir ~ _fr - and ^ ollermagohlaert ρ «dgl»

Plastering, trimming and grinding »especially of Q & 3 parts * Sdamiedesttiokea». Dies »metal models ,. Drilling and the like is often because of the narrow and inaccessible space. Conditions at the workshop aeior aciiwiarl ^ and time-consuming, for this reason it is advantageous to use small grinding machines that run at a low speed and that are equipped with a grinding spindle extension * and that allow processing of easily accessible places, especially in hollow areas Wxrkstüslcen ₉

Si * instead gebränohliehen extensions are made of a rigid ^ eIIe with a relatively small Durohmeaser, de * ren length always begrenit _r iat as a result of the erforderliahen hohtn Drahaahlen else in the critical Drehaahlbereich übermäi3ig large deflections and vibrations occur · Offer vibrations have one uneven running the Werkaeugea and result both infGIg * high Formänderungsarbelt as * in the heat generated mn premature destruction d 'r stock BXW dft also because of. to the break of the cSell * »

For the production of longer spindle lengths, several> 8tg corx-mounted iTellenstiiolce are coupled one behind the other. This execution sees 2β ^ θ € & in turn Uaohteile and difficulties in $ e & connecting parts, especially because of the lack of rigidity of the extension system, as further · disadvantages come one: considerable increase in the size of the attachment knife & * r extension elements and a · corresponding « Increase in manufacturing costs for the partition wall Eadverbindex hlnvav '-

These disadvantages are reduced by the use of the new type of displacement pin! with an encapsulated, flexible corrugation »e.g. GlI- €« ηι «ΙΙ · or» Spirel · * aasgesefaaltet * dl · duareh a daxuper seen «* Hohr να. an absolutely rigid extension element is designed which can be easily grasped in the hands, and

with which one. can do a safe, good job »

The object of the fire is shown in Figures 1 and 2 and it means here

Fig. 1 & ± mn Longitudinal section through the system of the grinding tool in which the drive machine and the tool holder are not drawn to scale in view

Fig. 2 the view of a scaled down reproduction of the tool or the extension spindle from a & r side - with, for example, an attached grinding wheel as a machining tool »

The structure ¹ is arranged for example on a pneumatically driven machine novel extension spindle is hereinafter erklärti

A sleeve 4 is put on and clamped on by means of the ring S provided with fastening screws 5 on the ä, e & tapered section 3 of a normal compressed air lathe 1, which is driven by the air flowing into the connecting piece 2. At the same time, a «feed sleeve? held, in which the extension tube 3 is inserted concentrically, Xn the free 2nd β this depending on. Does the head piece require a more or less long extension pipe? for the machining tool: also inserted concentrically and fastened «within the from the components 4 _f ?» 8 and 9 existing ^ Hohr system * is surrounded by a flexible hose lc: flexible "shaft 11 drawn in" which is supported by the bearings not shown here ± at ₉ and the one with HiIXe des

Küpplungsstückes 12 with the drive shaft of the compressed air machine is rotatably connected *

By actuating the compressed air valve a: xmsi tense * air enters the machine and displaces it la rotation, whereby the torque baw, the rotary movement via the coupling rod 12 on the flexible shaft 11 and thus on the respectively attached el- ^! gentliahen Bearfeeltangsverkzeuge is transferred »j

Sas novel "extension element may receive the machines for ma- j with electric AJXtxXeih using find" Furthermore frawf "i instead of a grinding wheel, depending on the type i" x machining, too! any other suitable tool,!. B * a jrääer, a Krauskopf, a wire brush, a polishing pad, etc. be used ·;

Claims (1)

1. Extension spindle for pneumatically or electrically driven KT gj nffflhla; l; f "* aa rtiri""iwetc." with flexible WeIIe _1, characterized in that the serving for driving ier prime mover to the actual tool flexible shaft of: is' any type encapsulated with a drilling which simultaneously represents the guide tube. Ζ, extension spindle according to claim 1, characterized in »that the actual extension system can hold any dimension in terms of its length and diameter · 3 · Extension spindle according to claims 1 and 2, characterized * that the extension tube is made of metallic or non-metallic! Material can exist " Frankfurt am Main-West 13, Solmsstrasse e 2 to ies. 2 * August 1955 JBAJSKFU MAY! CHISMBAF A & witteldnd