SU1400864A1 - Device for measuring grinding wheel wear - Google Patents

Abstract

The invention relates to the field of machine tools, in particular, to devices for evaluating the performance of grinding wheels. The purpose of the invention is to improve the measurement accuracy by reducing the wear of the measuring instrument. The device contains a measuring plate of easily machinable material, which is periodically supplied to the barcode, by a predetermined value S ,, is rotated 360, while touching the barcode, and is fixed in the initial position. At each such cycle, the plate is ground off by an amount of $ 2. The values of S, and $ 2 are recorded by indicators. The amount of wear of the circle during each cycle is found as the difference between the values of S and S. The device contains the feed and rotation mechanisms that ensure the indicated movements of the measuring plate relative to the CC. Il., 1 tab. iS

Description

The invention relates to a machine tool, in particular, to devices

I for testing grinding wheels

(HQ) on performance.

 The purpose of the invention is to increase the accuracy of measuring wear of the barcode by eliminating the effect of plate wear due to its constant contact with the circle on the measurement result.

The drawing shows a diagram of the device.

The device comprises a housing 1 fixedly mounted on the grinding wheel of the old starck, a screw 2 for moving the carriage 3 relative to the housing 1, a roller 4 rotatably mounted in the carriage 3, on which the holder 5 with a removable plate 6 is fixed, a retainer 7 contacting with the holder 5, the slide 8j, the screw 9 for moving the slide 8 relative to the carriage 3 in the direction perpendicular to the direction of movement of the carriage relative to the body 1, the indicator 10 moving the carriage 3 relative to the body 1 attached to the slide 8 in The indicator 11, the measuring tip of which is in contact with the plate 6, which is made of lightly processed material, for example plastic.

The device works as follows.

The device with its body 1 is fixed on the grinding pad 12. In the holder 5, the fixed replacement plate 6 is fastened. Moving the carriage 3 in the direction S, screw 2 to bring the plate 6 to full contact with the abrasive wheel 3; At the same time, the indication AJJ of indicator 10 is noted. Plate 6 is returned to its original position. At the same time, the indication A of the indicator 1I is noted. Then, at time t, they grind down the workpiece 14. During grinding at a selected time interval

3 served on the value of gN) „

t, - tj, carriage

BUT -. - where a j - indie reading

10 at the moment of time t,, is obviously a greater amount of wear of the circle y during the time t, -tQ. Then make one turn of the roller 4 with the holder 5. The plate 6, the passage position shown by the dotted line, partially grind and returns to its original position. An indication is indicated.

torus A,. The amount of radial wear y is determined as the difference between the readings of both indicators, i.e. (A, -Alj- (Af -A).

The cycle is then repeated, without interrupting grinding, at selected intervals. During grinding, radial wear of the wheel

 ( - ) - - BUT ; ), and the amount of wear for the time interval

tn -1-1

Y „UE - YhM

The table shows an example of lazy wear of barcode.

As can be seen from the table, measurements are carried out during the first 5 minutes of grinding after every minute, then after 5 minutes. The wear values are calculated using the formula below, in which

And About About about -

According to the table, you can trace the kinematics of wear circle in time.

The device makes it possible to increase the accuracy of measuring the wear of a barcode mirror, since it affects the effect of plate wear on the measurement result. Besides.

Claims (1)

Formulas of the invention with the possibility of moving parallel to the forming of the grinding wheel, a roller located in the carriage of the paral grinding wheel, and an indicator mounted on the housing, characterized in that, in order to improve the accuracy of measurement, it is equipped with a carriage mounted on the housing movable relative to the housing ₁₀ in the radial Tel'nykh indicator mounted on the carriage with the possibility of contacting the probe with its plate retainer keep · A, wherein the primary indicator mouth · 15 updated with the possibility of contacting its measuring tip with the carriage.