DE2331068A1 - Centreless grinding using belt grinding machine or polisher - has cork or plastic counter pressure or drive roller with belt tensioning arm - Google Patents

Abstract

Centreless circular or cylinder surface grinding using a belt grinding machine or polishing machine with counter pressure or drive rollers where the cork or plastic roller is covered with grinding belt or can be in the form of a drive roller for a grinding belt. The drive roller can be swivelled 15 deg. through the axis joining contact roller to the middle of the counter roller, either to right or left according to the chosen drive direction. A belt tensioning arm is fitted to the drive roller to regulate the tension and belt speed.

Description

Anw: Greif- ^V , 'Erk GmbH for grinding and polishing machines Clausen & Petermann, 58OO Hagen-Haspe

Bez: Centerless round or tube surface grinding or polishing using a belt grinder or polishing machine with counter pressure and propulsion rollers.

Description

Hundred-turn workpieces are best made centerless for the sake of simplicity processed.

This also relates to the improvement of the surface. Here is with Tie ribbons with cloth or sisal washers or similar materials polished.

The workpiece is set in rotation by the grinding belt and thereby braked by the counter roller, so that a grinding or polishing cut speed results.

If you set the counter roller, which is located in the axis between the pressure roller, .Verkstück and counter roller can move horizontally, at an angle, so becomes under the inclination of the rotary drive of the counter roller, a propulsion with the slope corresponding to the angle of inclination is achieved. The pipe or the like moves forward. However, if the pipe does not adhere sufficiently to the counter-pressure roller, longitudinal grooves will result.

The arrangement of the cork disc according to the invention serves to avoid this covered with a sanding belt or with a grained surface.

This sanding belt can or can be placed directly on the roll be stored at a distance around a timing pulley, which can be adjusted and tensioned for belt tension and running regulation.

Function description

The grinding belt (1a), which is used to improve the surface, runs over the contact disk (1) is effected on the workpiece (2).

The workpiece (2) is located between the contact roller (1) and the counter roller (3) and rests on the ruler (k) .

So that thin and thick round parts can be surface-improved

409883/0033

• A ·

can, the counter roller (3) can be moved in the axial direction (ib, 2b, 3c) with * means (3d) and the ruler (4) (this under 45 °) ^{with the} help of the handwheel (5).

The mating gear (3) is driven by a device (3c). Of the Drive (3e) can consist of a motor with a gearbox or drive shafts, which are used in the case of grinding points connected in series connect the counter rollers to each other.

To advance the workpiece, the counter roller (3) is tilted via the lever (6) in such a way that the corresponding advance direction and advance speed adjust.

The belt on the counter roller (3) runs over the deflection roller i7 ^a ) of the belt tensioning arm (7). It is tensioned using the nut (Tb) of the square shaft (7c) and is regulated by turning the arm (7).

So that a braking effect can be exerted on the workpiece, the counter-pressure roller is driven, as already indicated. The peripheral speed the counter roll is necessarily less than that generated by the contact disc on the workpiece.

The combination of back pressure and jacking in one facility is known per se. What is new in this arrangement, however, is the occupation of the counter-pressure roller with a grained band or the formation of the Roll circumference with a large surface portability over Scoring or suction cups.

There is also the adjustment of the ruler or the adjustment of the drive roller (Rollers that are only used for propulsion) under 45 ° for the Adaptation to different workpiece diameters new.

In the case of a grinding or polishing device with several such stations these devices to be set are to be adjusted by coupling via a respective actuation.

409883/0033

Claims (6)

Claims 5 M /) Centerless round or tube surface grinding or polishing by means of a belt sanding machine or polishing machine with counter pressure and propulsion rollers, characterized in that the propulsion and counter-roller is a roller (3), and this roller is made of cork or Plastic coated with sanding belt or can be designed as a drive roller for a sanding belt. 2. To 1, characterized in that the propulsion and counter roller (3) each 15 ° around the imaginary axis (belt grinding contact roller to the middle of the counter-roll) swiveled from the vertical to the left or right according to the advance direction to be selected can be. 3. To 1, characterized in that the counter and drive roller (3) is assigned a belt tensioning arm (7) through which the tension can be regulated by means of an adjusting device (Tb) and the belt run can be regulated by rotating the arm (7). 4. To 1, characterized in that the counter and propulsion roller (3) is arranged horizontally displaceable. 5. To 1, characterized in that the support ruler (4) under the workpiece 0 under 45 (to the horizontal and vertical equally) for different pipe ψ can be adjusted. 6. To 1 characterized in that propulsion rollers that are not also Counterpressure rollers are likewise to be adjusted under 45 °. 409883/0033 Blank page