Grinding tool dressing method and grinding device

Abstract

A method for dressing a grinding tool includes acquiring information on a deflection waveform indicating a positional deviation of a first tooth surface for each rotation phase of a first rotating body, acquiring, as contact positional data indicating a position where the first tooth surface and the second tooth surface are in contact with each other, an envelope of the deflection waveform, the envelope passing through a plurality of crests of the deflection waveform located on a side closer to a second tooth surface, and dressing a grinding tooth surface with a dresser tooth surface by changing the rotation speed of the first rotating body based on a predetermined forming quantity and the contact positional data.

1 . A grinding tool dressing method for dressing a helical grinding tooth surface of a grinding tool with a dresser tooth surface of a dresser gear, wherein
 one of the grinding tool or the dresser gear is a first rotating body including a first tooth surface that is one of the grinding tooth surface or the dresser tooth surface,   another of the grinding tool or the dresser gear is a second rotating body including a second tooth surface that is the other of the grinding tooth surface or the dresser tooth surface,   the grinding tool dressing method comprising:   acquiring information on a deflection waveform indicating a positional deviation of the first tooth surface for each rotation phase of the first rotating body while a rotation speed of the first rotating body is changed in a manner so that the first tooth surface and the second tooth surface are in contact with each other in a state where the first rotating body and the second rotating body are meshed and rotated;   acquiring, as contact positional data indicating a position where the first tooth surface and the second tooth surface are in contact with each other, an envelope of the acquired deflection waveform, the envelop passing through a plurality of crests of the deflection waveform located on a side closer to the second tooth surface; and   dressing the grinding tooth surface with the dresser tooth surface by changing the rotation speed of the first rotating body based on a predetermined forming quantity and the contact positional data in the state where the first rotating body and the second rotating body are meshed and rotated.   
     
     
         2 . The grinding tool dressing method according to  claim 1 , wherein
 the first tooth surface of the first rotating body is the dresser tooth surface of the dresser gear, and   the second tooth surface of the second rotating body is the grinding tooth surface of the grinding tool.   
     
     
         3 . The grinding tool dressing method according to  claim 1 , further comprising:
 acquiring dressing positional data in which the forming quantity is added to the contact positional data; and   dressing the grinding tooth surface with the dresser tooth surface by changing the rotation speed of the first rotating body based on the dressing positional data in the state where the first rotating body and the second rotating body are meshed and rotated.   
     
     
         4 . A grinding device configured to dress a helical grinding tooth surface of a grinding tool with a dresser tooth surface of a dresser gear, wherein
 one of the grinding tool or the dresser gear is a first rotating body including a first tooth surface that is one of the grinding tooth surface or the dresser tooth surface,   the other of the grinding tool or the dresser gear is a second rotating body including a second tooth surface that is the other of the grinding tooth surface or the dresser tooth surface,   the grinding device comprising a controller including one or more processors executing computer-executable instructions stored in memory,   wherein the one or more processors execute the computer-executable instructions to cause the controller to:   change a rotation speed of the first rotating body in a manner so that the first tooth surface and the second tooth surface are in contact with each other in a state where the first rotating body and the second rotating body are meshed and rotated;   acquire information on a deflection waveform indicating a positional deviation of the first tooth surface for each rotation phase of the first rotating body;   acquire, as contact positional data indicating a position where the first tooth surface and the second tooth surface are in contact with each other, an envelope of the acquired deflection waveform, the envelop passing through a plurality of crests of the deflection waveform located on a side closer to the second tooth surface, and   dress the grinding tooth surface with the dresser tooth surface by changing the rotation speed of the first rotating body based on a predetermined forming quantity and the contact positional data in the state where the first rotating body and the second rotating body are meshed and rotated.   
     
     
         5 . The grinding device according to  claim 4 , wherein
 the first tooth surface of the first rotating body is the dresser tooth surface of the dresser gear, and   the second tooth surface of the second rotating body is the grinding tooth surface of the grinding tool.   
     
     
         6 . The grinding device according to  claim 4 , wherein
 the one or more processors execute the computer-executable instructions to cause the controller to:   acquire dressing positional data in which the forming quantity is added to the contact positional data; and   dress the grinding tooth surface with the dresser tooth surface by changing the rotation speed of the first rotating body based on the dressing positional data in the state where the first rotating body and the second rotating body are meshed and rotated.