Page 20 - january

PRODUCTION AUTOMATION

surface of the spindle 2 in the area where reflective
elements are located 8. Results scans in the form
of electrical signals are fed to the means 4 for
collecting and processing information and to
the computer 5. At the moment when the laser
beam of the sensor 7 falls on the reflective
elements 8, installed at a technologically
regulated angle, the signal magnitude
increases sharply, which makes it possible
to mark the teeth 11, 12, 13, 14 cutters 9
when constructing a geometric image of the
machined surface (Fig. 3), corresponding to
the maximum selection of teeth 11, 12, 13,
14 of the machined surface, or a minimum of
surface waviness at the same point. In this case,
the number of reflective elements 8 corresponds
to the number of teeth 11, 12, 13, 14 of the cutter 9
and they have an orientation corresponding to the position
of the tops of the teeth 11, 12, 13, 14 of this cutter. Installation
of vibration displacement sensors 1 necessitates balancing, which is
carried out by an adjustable counterweight 6, fixed on the spindle 2 in the horizontal plane
of the sensors 1 vibration displacement. The signals from the vibration displacement sensors
1 and the laser sensor 7, received by the computer 5, are processed according to a specially
developed the program that constructs the trajectories of the axis of the cutter 9 and the
geometric image of the machined surface of the work piece 10. For this, on the trajectory of
the axis of the cutter 9 there are points corresponding to the positions of the teeth 11, 12, 13,
14 of the cutter 9. These points O1, O2, O3, O4 are the centers of the circles along which the
tops of the teeth 11, 12, 13, 14 of the cutter 9 move and along which the chips are removed
from the machined surface of the work piece 10, while the radius of removal of the chips for all
is R. The sequential construction of these arcs for the tops of the cutting teeth 11, 12, 13, 14
cutter 9 allows you to build a geometric image of the machined surface. In this case, teeth 11,
12, 13, 14 will process the work piece at different levels along height, which is characterized
by segments x 3-1, x 3-2, x 3-4. Based on the constructed geometric image, the parameters
of the waviness of the processed surfaces: maximum and average waviness height, maximum
and average waviness step.
The obtained information is displayed on the monitor screen of the means 4 for collecting
and processing information and is compared with the values of the tolerances for the parameters
of waviness, which are indicated in the working drawing for the work piece. In the event
that the calculated waviness indicators fit within the tolerance, then the part continues to be
manufactured. In the event that the calculated waviness indicators exceed the tolerances, then

20 Stanochniy park