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Сообщения, помеченные ‘Blurtsyan D.R.’

3
Mar

Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R. The research of common factors in reaching a physical and mechanical condition of driveshaft crosspiece pins in feed centreless grinding in experimental and production modes

The research of common factors in reaching a physical and mechanical condition of driveshaft crosspiece pins in feed centreless grinding in experimental and production modes

Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R.

The paper presents the research data on establishing common factors in reaching a physical and mechanical condition of driveshaft crosspieces pin surfaces after in-feed centerless grinding both in the experimental and production modes. The assessment technique of physical and mechanical condition of the surfaces is developed. The elements of cutting modes in the context of a basic manufacturer are identified. Experimental cutting conditions providing enhanced physical and mechanical condition of the crosspiece pin surface are proved. The results of comparative tests of experimental and production grinding modes are achieved. The biggest surface tempering is provided during production grinding modes. The surface tempering almost never happens in experimental grinding mode. There are minor burns and lack of cracks in experimental grinding modes while production grinding modes cause cracking and major burns on crosspiece pin sets. Microhardness of experimentally ground subsurface increases in all horizons compared to the production mode.
Keywords: crosspieces, centerless grinding, experimental modes, production modes, microhardness.

References

  1. Blurtsyan R.S., Blurtsyan D.R., Blurtsyan I.R. The study of regularities of formation form errors, surface roughness and waviness in the mortise centerless grinding pins frogs drive shafts, depending on the speed of the leading circles // Engineering industry and life safety, 2012, № 1 (11). – P. 47-50.
  2. Blurtsyan R.S., Blurtsyan D.R., Blurtsyan I.R. The study of regularities of formation form errors, surface roughness and waviness in the mortise centerless grinding pins frogs drive shafts, depending on the momentary cross feed // Engineering industry and life safety, 2012, № 1 (11). – P. 51-54.
  3. Blurtsyan R.S., Blurtsyan D.R., Zalazinskiy M.N., Selihov G.F., Blurtsyan I.R. Study fatigue torsion shafts treated without grinding operations // Engineering industry and life safety, 2008, № 5. – P. 128-130.
  4. Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R. Possibility of increasing the service life of the torsion shaft engineering methods // Engineering industry and life safety, 2009, № 6. – P. 85-90.
  5. Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R. Investigation of the effect on the quality of the cutting surfaces with mortise centerless grinding // Engineering industry and life safety, 2010, № 7. – P. 89-94.
  6. Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R. Technological features of the formation of residual stresses in the surface layers of the torsion shafts running // Engineering industry and life safety, 2011, № 1. – P. 17-20.
  7. Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R. The study of shape error formation regularity in the plunge centerless grinding of driveshaft cross-piece journals based on the thermal state of the machine and temporary stops // Engineering industry and life safety, 2013, № 1. – P. 45-49.
  8. Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R.  The research of regularities in finding shape errors and roughness in cut-in centreless grinding of driveshaft cross-piece journals in accordance with the coolant composition and its supply scheme to the grinding area // Engineering industry and life safety, 2013, № 2. – P. 49-53.

«Engineering industry and life safety» №3 (21), 2014. Pages: 52-57

Download full text:Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R. The research of common factors in reaching a physical and mechanical condition of driveshaft crosspiece pins in feed centreless grinding in experimental and production modes

View russian version

Blurtsyan David Rafaelovich – Professor, Sandvik Coromant, Sweden. E-mail: davidrafmontreal@gmail.com

Blurtsyan Rafic Shavarfovich – Ph.D., Murom Institute of Vladimir State University, Murom, Russia. E-mail: raf-blur@yandex.ru

Blurtsyan Iosif Rafaelovich – Ph.D., Murom Institute of Vladimir State University, Murom, Russia. E-mail: iosifraf@list.ru

19
Jan

Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R. The study of shape error formation regularity in the plunge centerless grinding of driveshaft cross-piece journals based on the thermal state of the machine and temporary stops

The study of shape error formation regularity in the plunge centerless grinding of driveshaft cross-piece journals based on the thermal state of the machine and temporary stops

Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R.

The paper presents the research results of shape error formation regularity in the plunge centerless grinding of driveshaft cross-piece journals according to the thermal state of the machine and its temporary stops. The results provide decrease in the shape error of driveshaft cross-piece journal surfaces. The paper presents the dependences of shape error change (ellipticity, faceting) on the machine thermal state and its temporary stops. Various conditions of the machine thermal state (the state of long-term heating, the state of long-term cooling, the state of overnight stops) have been studied. The measurement of shape error parameters have been performed by means of the circularity meter. A number of circulargramms have been recorded under certain recording increase and their further processing. The results of the research are presented as guidelines for the use of technology in driveshaft cross-pieces production. It has been experimentally proved that the machine thermal state effects the shape error formation in driveshaft cross-pieces grinding. Being in the state of thermal balance, the machine provides greater shape precision in driveshaft cross-pieces centerless grinding.

Keywords: shape errors, centerless grinding, cross-pieces, the machine thermal state, stops in the machine operation.

References

  1. Blurtsyan R.S., Blurtsyan D.R., Blurtsyan I.R. The study of regularities of formation form errors, surface roughness and waviness in the mortise centerless grinding pins frogs drive shafts, depending on the speed of the leading circles // Engineering industry and life safety, 2012, № 1 (11). – P. 47-50.
  2. Blurtsyan R.S., Blurtsyan D.R., Blurtsyan I.R. The study of regularities of formation form errors, surface roughness and waviness in the mortise centerless grinding pins frogs drive shafts, depending on the momentary cross feed // Engineering industry and life safety, 2012, № 1 (11). – P. 51-54.
  3. Blurtsyan R.S., Blurtsyan D.R., Zalazinskiy M.N., Selihov G.F., Blurtsyan I.R. Study fatigue torsion shafts treated without grinding operations // Engineering industry and life safety, 2008, № 5. – P. 128-130.
  4. Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R. Possibility of increasing the service life of the torsion shaft engineering methods // Engineering industry and life safety, 2009, № 6. – P. 85-90.
  5. Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R. Investigation of the effect on the quality of the cutting surfaces with mortise centerless grinding // Engineering industry and life safety, 2010, № 7. – P. 89-94.
  6. Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R. Technological features of the formation of residual stresses in the surface layers of the torsion shafts running // Engineering industry and life safety, 2011, № 1. – P. 17-20.

«Engineering industry and life safety» №1 (15), 2013. Pages: 45-49

Download full text:Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R. The study of shape error formation regularity in the plunge centerless grinding of driveshaft cross-piece journals based on the thermal state of the machine and temporary stops

View russian version

Blurtsyan David Rafaelovich – Professor, Sandvik Coromant, Sweden. E-mail: davidrafmontre-al@gmail.com

Blurtsyan Rafic Shavarfovich – Ph.D., Murom Institute of Vladimir State University, Murom, Russia. E-mail: raf-blur@yandex.ru

Blurtsyan Iosif Rafaelovich – Ph.D., Murom Institute of Vladimir State University, Murom, Russia. E-mail: iosifraf@list.ru

18
Jan

Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R. The research of regularities in finding shape errors and roughness in cut-in centreless grinding of driveshaft cross-piece journals in accordance with the coolant composition and its supply scheme to the grinding area

The research of regularities in finding shape errors and roughness in cut-in centreless grinding of driveshaft cross-piece journals in accordance with the coolant composition and its supply scheme to the grinding area

Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R.

The paper presents the research results of shape errors and roughness of driveshaft cross-piece journal surfaces in cut-in cenreless grinding in accordance with the coolant composition and its supply scheme into the grinding area. The results will provide increasing the quality of driveshaft cross-piece journal surfaces. The dependence of shape error change and specification on roundness and cut are considered in the course of the research work as well as ground surface parameters (Ra, Rz) depend on the coolant composition and its supply scheme to the grinding area in cut-in cenreless grinding of driveshaft cross-piece journals. The paper considers the influence of emulsol, which is a water solution, and NGL-205 coolant on developing the shape roughness and error parameters in centreless grinding. Roughness parameter measurements are conducted with the use of profilometers-profilers of various designs. Shape error parameter measurements are performed using bore gages when recording polar diagrams followed by their processing. The results of the research have been implemented in manufacturing driveshaft cross-pieces.

Keywords: shape errors, roughness, centreless grinding, cross-piece, composition, coolant supply scheme.

References

  1. Blurtsyan R.S., Blurtsyan D.R., Blurtsyan I.R. The study of regularities of formation form errors, surface roughness and waviness in the mortise centerless grinding pins frogs drive shafts, depending on the speed of the leading circles // Engineering industry and life safety, 2012, № 1 (11). – P. 47-50.
  2. Blurtsyan R.S., Blurtsyan D.R., Blurtsyan I.R. The study of regularities of formation form errors, surface roughness and waviness in the mortise centerless grinding pins frogs drive shafts, depending on the momentary cross feed // Engineering industry and life safety, 2012, № 1 (11). – P. 51-54.
  3. Blurtsyan R.S., Blurtsyan D.R., Zalazinskiy M.N., Selihov G.F., Blurtsyan I.R. Study fatigue torsion shafts treated without grinding operations // Engineering industry and life safety, 2008, № 5. – P. 128-130.
  4. Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R. Possibility of increasing the service life of the torsion shaft engineering methods // Engineering industry and life safety, 2009, № 6. – P. 85-90.
  5. Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R. Investigation of the effect on the quality of the cutting surfaces with mortise centerless grinding // Engineering industry and life safety, 2010, № 7. – P. 89-94.
  6. Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R. Technological features of the formation of residual stresses in the surface layers of the torsion shafts running // Engineering industry and life safety, 2011, № 1. – P. 17-20.

«Engineering industry and life safety» №2 (16), 2013. Pages: 49-53

Download full text:Blurtsyan D.R., Blurtsyan R.S., Blurtsyan I.R. The research of regularities in finding shape errors and roughness in cut-in centreless grinding of driveshaft cross-piece journals in accordance with the coolant composition and its supply scheme to the grinding area

View russian version

Blurtsyan David Rafaelovich – Professor, Sandvik Coromant, Sweden. E-mail: davidrafmontre-al@gmail.com

Blurtsyan Rafic Shavarfovich – Ph.D., Murom Institute of Vladimir State University, Murom, Russia. E-mail: raf-blur@yandex.ru

Blurtsyan Iosif Rafaelovich – Ph.D., Murom Institute of Vladimir State University, Murom, Russia. E-mail: iosifraf@list.ru