SU1442874A1 - Method of determining the cutting capacity of grinding wheel - Google Patents

Description

This invention relates to abrasive wheels.

The purpose of the invention is to increase productivity by reducing test times.

The method is implemented as follows.

On a grinding machine, for example, a grinding machine, equipped with a dynamometer for measuring the radial force of the puller, the sample to be machined is fed to the abrasive wheel in the direction of the tangent to its periphery with an increased grinding depth of the sample at an angle ot. to the feed direction. With respect to the depths

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12X18H10T 20 W wide and 300 mm long, 35 m / s pshifovaya speed, Vfij table longitudinal movement speed, 2 m / min when the radial force reaches the value of R. The critical value of the radial force P is assumed to be 90 N, since when this value is reached, visible burns appear on the surface to be treated. The sample surface to be processed is set to the direction supplying with a gradient of 0.8 / 300 by lifting the one edge of the magnetic plate which

grinding radial force increased ™ 20 Sample dynamometer installed,. When reaching its value Rc.

The amount of metal removed is determined by weighing the sample before and after grinding with a subsequent determination of the volume at a known metal density. The grinding time is defined as the ratio of the grinding length, which is found by measuring the grinding wheel / wheel circle on the surface to be machined, to the speed of the table.

 off, grinding stops. The removal of the material being processed is determined by any known method, for example, by weighing the sample before and after grinding. The pickup intensity Q. is determined by the ratio of the pickup value to the grinding time. the ability of the circle is evaluated by the ratio. The value of Pj is chosen from experimentally, based on the capabilities of the AIDS system (limitation on power, the appearance of vibrations, burns of the treated surface, and t, Pe)

where a is the grinding depth at which the radial force reaches a critical value, Pjj at the maximum cutting ability of the wheel (selected experimentally); 1 - the largest working stroke of the table

machine or length of the sample to be ground.

Example. Assess the cutting ability of the grinding wheel when it runs dry and with a lubricant-cooling fluid on a grinding machine. Test conditions: processing sample from material

Installed dynamometer with a sample

The amount of metal removed is determined by weighing the sample before and after grinding with a subsequent volume determination with a known metal density. The grinding time is defined as the ratio of the grinding length, which is found by measuring the track of the grinding / grinding wheel on the machined surface, to the speed of the table.

The test results are as follows;

quantity to nitsu

The metal Q, removed at one time, is 2200 mm / min dry with 2440 mm / μ grease, respectively, the value characterizing the cutting ability of the wheel. Avna 97.5 and 104j2 mm / min-N,

Claims (1)

Invention Formula The method of determining the cutting tool of the grinding wheel, which consists in processing the sample at a constant feed of the grinding wheel and at an increased radial force, and determining the cutting ability of the grinding wheel, about 20 in order to increase greasiness, processing is stopped when the radial force of a given value is reached.