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INNOVATIVE TECHNOLOGY                                                                INNOVATIVE TECHNOLOGY

 drilling  without  filler,  the  vibration      It  can  be  argued  that  the  presence  of  fillers  filling  the  cavity  of  the  work  piece  with
 amplitudes in the frequency ranges where   uniform adherence to the walls stabilizes the process of drilling parts from the HLPC, reduces
 the  natural frequencies of  the  tool are   the intensity and amplitude of vibrations. In the feed range 0.2 ... 0.6 mm / rev, the likelihood
 present  sharply  increase.  When  drilling   of  low-frequency  vibrations  and,  accordingly,  the  probability  of  delamination  is  significantly
 work pieces, the free space of which was   reduced.
 filled  with  a  compound,  the  vibration
 amplitudes are much lower at almost all   SKZ, mV
 frequencies (Fig. 7).
    In  general,  the  process  of  drilling
 work  pieces  with free  space  (without
 fillers)  is  characterized  by  bursts  of
 а  vibrations with a large amplitude during
 the transition from the glass-fiber layer of
 the winding to the reinforcement package
 and also from the package to the winding
 layer. This is due to the  mobility of  the
 HLPC layers during drilling in the absence
 of  filler.  When  filling  the  free  space
 with  tight-fitting  fillers,  vibration  bursts
 occur  less often,  and  their amplitude is
 significant below.


 b
 Fig. 4. Placement of fillers in the free space of the work piece:
 1 - reinforcement package; 2 - aluminum bar; 3 - compound.
                                                                                                                Hz


    Fig. 7.  Octave spectra at the end of processing when drilling a part from HLPC: 1- without filler; 2 - with compound filler; 3
 Dimensions h of delamination, mm   Fig. 5. Dependence of the     gave a positive effect in the form of the absence of delamination and a decrease in the level of
    - with aluminum alloy bars




            Fillers of the free space of parts made of HLPC proposed to reduce the level of vibrations

    vibrations, which makes it possible to recommend this technique for drilling with feed rates of
    0.6 mm / rev, which is three times more than the feed rates currently used.


 magnitude of the delamination
 h in the reinforcement
 package on the feed at a
 constant drilling speed V =
 30 m / min: 1 - without filler;
 2 - with aluminum alloy bars;
 Feed, mm / rev  3 - with compound..
                                                                                                          A.I. Mamotko,
 winding was determined as the difference              postgraduate student of the Department of Highly Effective Processing
                                                                                                           Technologies
 between  the  nominal  diameter  of  the                                                    FGBOU VO MSTU "STANKIN"
 hole to be machined and the maximum
 diameter  of  the  circle  into  which the
 delaminated pieces of fabric fit.
    To register  VA  signals, we used
 the  equipment  developed  at  MSTU   15 m/min  References:
 30 m/min
 ''STANKIN'' [1 - 3]. Received root-mean-                  delamination value Δ, mm  60 m/min  1. Kozochkin M. P., Maslov A. R., Porvatov A. N. Information-measuring and control systems of power and vibroacoustic
 square values (RMS) of signal amplitudes   parameters // Measuring equipment, No. 8, 2015, pp. 5 - 9.
 and diagrams of octave spectra in time   2. Kozochkin M.P., Maslov A.R., Porvatov A.N. Controlling the cutting process by integrating the diagnostics subsystem into
 intervals corresponding for each specific   the CNC system of a metal-working machine. Vestnik MGTU ''Stankin'', No. 3/2011, pp. 110 - 111.
    3. Kozochkin M.P., Maslov A.R., Porvatov A.N. Innovative hardware and software complex for diagnosing high-tech systems
 drilling mode to the drill entry, the middle   // Innovations, no. 10/2013, (180) pp. 128 - 131.
 of the gain package and the drill exit.  4. Pat. 113030 Russian Federation, IPC G05B 13/02. An adaptive control system for the cutting process on a metal cutting
    The  analysis  of  the  VA  signal               Feed, mm / rev  machine / Maslov A. R., Kozochkin M. P., Porvatov A. N .; applicant and patentee MSTU ''STANKIN'' - No. 2011131655/08;
    declared 07/28/2011; publ. 01/27/2012, Bul, No. 6, 6 p.
 spectra  during the  drill  exit from  the
 amplification  package  shows  that  when   Fig. 6. Dependence of the delamination value Δ at the entrance to the
 hole on the feed rate of a drill with a diameter of 10 mm
 14  Stanochniy park                                                                           Stanochniy park       15
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