DD145723A1 - ROTATING TOOL TO ROUND DRILLING EDGE - Google Patents

Abstract

The invention relates to a rotary tool for rounding hole edges preferably on hardened parts / workpieces with a tool shank arranged abrasive strips, which the nachführenden specific operations, e.g. Grind the drill holes and round sharp edges. The aim / object of the invention is to provide a tool which is intended for workpieces of any shape, wherein the tool is used for different bore diameter and the hole arrangement can be arbitrary in the workpiece. According to the invention the object is achieved in that held on a tool shank grinding bars by means of a Schleifleistenträgers pivotally and the grinding bars are guided against the other end of the pivoting movement limiting groove plate which is arranged axially movable on the tool shank. The field of application of the invention relates to tools for rounding edges.

Description

Title of the invention

Rotating tool requires rounds of hole edges

Field of application of the invention

The invention relates to a rotary tool for rounding of hole edges preferably on hardened parts / workpieces with ^{1 arranged} on a Werkzeugschaf t arranged grinding, which. after previous specific work cycles, eg # loops of holes, round the resulting sharp hole edges.

Characteristic of the known technical solutions

There is a device for rounding edges in drilling of annular parts known / DD-PS 18.438, in which these parts are rotated by the action of rotation and centrifugal force, wherein, the deburring is done by a reel.

The device is thus, usable only for annular parts and can not be used in unsymetris.ch.en "workpieces or corresponding hole arrangement, or, in blind holes.

Furthermore, a method for deburring of channel edges in coated holes known / DE-OS 2,326,408, with which the channel edges after the coating of chromium, Uicasil o.a. be deburred by a formula electrode in the electro-chemical removal process. The application of the method is possible only for certain material combinations and excludes a necessary for economic reasons universal application.

ZIeI the invention '

It is an object / object of the invention to provide a tool for rounding of hole edges, which is particularly intended for workpieces .'beliebiger form, the tool being used for different bore diameters and the hole arrangement can be arbitrary in the workpiece,

Explanation of the essence of the invention

According to the invention, the object is achieved in that are held on a tool shank grinding bars by means of a Schleifleistenträgers pivotally and the grinding bars are guided against the other end of a pivoting movement limiting Uutenscheibe, which is arranged axially movable on the tool shank.

Furthermore, each consisting of a base body and a glued drawing abrasive stone abrasive strips are mutually usable and can be applied to increase the centrifugal ⁺ .

The main advantages of the invention are that with the tool according to the invention the difficulties of deburring edges of hardened parts can be regarded as overcome.

It is particularly advantageous that the tool is unchanged, usable for a relatively different diameter range. A significant advantage is that the mutual usability of the grinding bars ensures twice the service life and the replacement of the tool by removing the used and sticking new drawing grindstones done.

Ausführangsbeispiel

The invention will be explained in more detail with reference to an exemplary embodiment, wherein the drawing shows a side view of the tool.

h s with spring force

The erfindiingsgemäße tool consists of a tool shank 1, which preferably has a prismatic cross section 2. The tool shank 1 is formed, on the one hand, as a Morse taper 3 and, on the other hand, as a grinding bar carrier 5 which supports the grinding bars 4 in a pivotable manner. On the prismatic cross-section 2 of the tool shank 1 e an Ifutenscheibe 6 is arranged axially movable, which is provided with the guide of the grinding bars 4 and their locking movement limiting grooves 7.

The abrasive strips 4 consist of a base body 8 with * bonded die grinding stones 9 and can be designed for mutual reception. Furthermore, not shown, serving to increase the centrifugal force springs can be effective between the tool shank 1 and the grinding bars.

Claims (4)

115143 invention claim 1. Rotating tool for rounding of hole edges preferably on hardened parts arranged on a tool shank abrasive strips, characterized in that on the tool shank (1) a grinder carrier (5) is fixed, which receives the grinding strips (4) pivotally at one end and the contact strips (4) against the other end of a pivoting movement limiting groove plate (6) are guided, which is arranged axially adjustable on the tool shank (1). 2. Tool after point %, characterized in that the
Sanding strips (4) from a base body (8) with
glue-on grinding stones (9). 3. Tool according to item 1 and 2, characterized in that the abrasive strips (4) for the purpose of mutual use at both ends for mounting in the squint wearer (5) are formed. 4. Tool according to item 1 to 3, characterized in that on the tool shank (1) on the grinding strips (4) acting, the increase in the centrifugal force serving springs are not shown. - 1 sheet of drawing paper for this