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What angles are best for ceramic tools?
LITERATURE
356
AND
changes and vice versa. C’hanges of thermoelectric power at various conditions of vibration are recorded by means of a magnetoelectric oscillograph.
CURRENT
EVENTS
VOL.
1 (19j7/jK)
superior in machining Ti provided it did not c1lip.A nose radius of r /32-in. gave best results. Are Best for Ceramic Tools ? and 1,. 11. Sowinski. i%fefaiWOYkiag PVoclt~ctiOIl, V. IOI, Sept. 6, “9.57, 1’. What
Angles
H. J. Siekmann
An Appraisal of Ceramic Cutting Tools. R. C. Brewer. Engineers’ Digest, v. 18, no. 9, Sept. 1957, 1’. 381 $- 6 pages. Porosity and grain size; use of alumina-based materials for practical tools; wear resistance; tool life ; pow3 requirements; sttrface roughness.
Study on Shave-Tuning. Cutting With Inclined Straight-Edged Tool. Masao Kubots, Tamehiro Kotorii, and hlinori
‘.573-r575. II&ailed results of tests run to determine bun important tool geometry is to ceramic cnttinK materials.
Electrical Slits.
Discharge
Cuts
“Impossible”
Kanai.
joltrnal of Mechanical Ibovatory 3, no. I. X957, p. 24-32. New tool has a straight edge, tangential to the cylindrical surface to be finished and inclined to the direction of feed.
(Japan), \‘.
Ceramics nesses.
Cut HSS and Show Their Weak-
John F. >Ic;tuliffe. .-1n2erica?t ~l$achilzis/, v. 101, Sept. 9, ig.jT, p. 130-133. Use of ccrsmic cutting tools on high-speed steel, super-alloys, andTi.Negative rake angles and low feed rates are essential with present types available.
Advantages and Limitations of Ultrasonic Machining. E. 1%. Keppiras and K. I). I:oskett. ,Iltrckzrrt, L)esigz. Y. 29, Sept. 5, 7957, p. 121 -i_ 2 pages. Factors inctnde to01 material, shape, area, depth of cut, physical properties of work material, and sbraslve properties including hanlness, grain dimensions, nature of the suspension mctlium, ant1concentration ofsuspension.
On the Cutting Mechanism
Keiji Okushina
for Soft Metals. and Katsundo Hitomi. Kyoto
University. Memoivs of the: Fncztlty of ET@12&?Yi?Z~,I’. it=), Apr. Ig_jT, 1). 13j-166. By orthogonai dr)- cutting soft metals such as lead and Lipowltz alloy in low velocity with a specially designed cutting test equipment, the existence of the transitional region between the rigid region of the workpiece and the plastic region of the steady chip was r‘ccognized. This should be taken into consideration in the theoretical anaiysis of cutting mechanism instead of the single shear plant.
of
Chromizing of Wood-Cutting Tools. .\. P. I’ohshchuk. Henry Hmtchev l‘vanslat~o~z .vo. 399X,6 pp. (From Sfmhi i I~?sfvunmt, v. 28, nc _I, rgjy, p. 29.30.) llcnry Hrntchcr, .&Itadena, (‘alif. \\‘ear rtGstancr of \-arioos (‘i. of 1. woodcutting tot& was trebled by chromizing. C‘hrt+ rnizing prsctice. Effects 01 treatmg temperature ancl time.
Machining Titanium. II. 11. C. Sl~aw~ I’. A. Smith,
13. (‘oldmg, ant1 N. 11. Crook. I oo pp. I 9.57.Massachusetts Instttutc of ‘Technology, Cambridge, Mass. (TN799.T~ IvI+gma Over.) The machming characteristics of clamped carbide tools when machining Ti alloys and XISI 4340 steel are compared. A hard finishing grade cast iron type carbide was found to be
The Cold Extrusion of Circular Rods Through Square Multiple Hole Dies. I,. C. Tfndeja and Vi’. Johnson. joz~vnai ~1 t& J1r~chunic.s a~?d: Physics 01 .S~lid~, \w. .j, no. 4, ,957, I_‘, LSI-295 + j plates. I)rtermination of pressure necessary to col(lextrntle pnre I+, tellurium I%, pnre Sn, anll super-pure .JIl through 90” dies containing up to four hi)tcs arrangetl in different patterns. Extrusion of a Complex Shape Through a Round Die. \Villiam I<. Ray. ~IP/u/ F’vogrr.ss. v. 72, Sept. 19,j7, 1’. b-j-00. .\ long, straight control rod of I’-shaped cross sectjon for a nuclear reactor is made by canning flat cermet compacts, assembling them with al~l~ropriate inset-ts of soft steel to fill ;I scaletlshcath, hot-extruilinp the combinaticm, and then dissolving the soft steel lnscr’ts 111 acid, lea\.ing behind the rcquiretl stainlcssclad rotl.
Laws Governing the Drawing of Metals in the Presence of Lubricants. (in Russian) S. Ia. Vciler and V. 1. T,ikhtman. ~~(j~~~~~. ;1 kodenziz _Vauk SSSK, v. I I 4, no. b, June 2 f , ‘957, p. lL&+-“27. Friction and tlrawlng of metals. llse of lubricants. t:ormulas ant1 methods of calculation.
356
AND
changes and vice versa. C’hanges of thermoelectric power at various conditions of vibration are recorded by means of a magnetoelectric oscillograph.
CURRENT
EVENTS
VOL.
1 (19j7/jK)
superior in machining Ti provided it did not c1lip.A nose radius of r /32-in. gave best results. Are Best for Ceramic Tools ? and 1,. 11. Sowinski. i%fefaiWOYkiag PVoclt~ctiOIl, V. IOI, Sept. 6, “9.57, 1’. What
Angles
H. J. Siekmann
An Appraisal of Ceramic Cutting Tools. R. C. Brewer. Engineers’ Digest, v. 18, no. 9, Sept. 1957, 1’. 381 $- 6 pages. Porosity and grain size; use of alumina-based materials for practical tools; wear resistance; tool life ; pow3 requirements; sttrface roughness.
Study on Shave-Tuning. Cutting With Inclined Straight-Edged Tool. Masao Kubots, Tamehiro Kotorii, and hlinori
‘.573-r575. II&ailed results of tests run to determine bun important tool geometry is to ceramic cnttinK materials.
Electrical Slits.
Discharge
Cuts
“Impossible”
Kanai.
joltrnal of Mechanical Ibovatory 3, no. I. X957, p. 24-32. New tool has a straight edge, tangential to the cylindrical surface to be finished and inclined to the direction of feed.
(Japan), \‘.
Ceramics nesses.
Cut HSS and Show Their Weak-
John F. >Ic;tuliffe. .-1n2erica?t ~l$achilzis/, v. 101, Sept. 9, ig.jT, p. 130-133. Use of ccrsmic cutting tools on high-speed steel, super-alloys, andTi.Negative rake angles and low feed rates are essential with present types available.
Advantages and Limitations of Ultrasonic Machining. E. 1%. Keppiras and K. I). I:oskett. ,Iltrckzrrt, L)esigz. Y. 29, Sept. 5, 7957, p. 121 -i_ 2 pages. Factors inctnde to01 material, shape, area, depth of cut, physical properties of work material, and sbraslve properties including hanlness, grain dimensions, nature of the suspension mctlium, ant1concentration ofsuspension.
On the Cutting Mechanism
Keiji Okushina
for Soft Metals. and Katsundo Hitomi. Kyoto
University. Memoivs of the: Fncztlty of ET@12&?Yi?Z~,I’. it=), Apr. Ig_jT, 1). 13j-166. By orthogonai dr)- cutting soft metals such as lead and Lipowltz alloy in low velocity with a specially designed cutting test equipment, the existence of the transitional region between the rigid region of the workpiece and the plastic region of the steady chip was r‘ccognized. This should be taken into consideration in the theoretical anaiysis of cutting mechanism instead of the single shear plant.
of
Chromizing of Wood-Cutting Tools. .\. P. I’ohshchuk. Henry Hmtchev l‘vanslat~o~z .vo. 399X,6 pp. (From Sfmhi i I~?sfvunmt, v. 28, nc _I, rgjy, p. 29.30.) llcnry Hrntchcr, .&Itadena, (‘alif. \\‘ear rtGstancr of \-arioos (‘i. of 1. woodcutting tot& was trebled by chromizing. C‘hrt+ rnizing prsctice. Effects 01 treatmg temperature ancl time.
Machining Titanium. II. 11. C. Sl~aw~ I’. A. Smith,
13. (‘oldmg, ant1 N. 11. Crook. I oo pp. I 9.57.Massachusetts Instttutc of ‘Technology, Cambridge, Mass. (TN799.T~ IvI+gma Over.) The machming characteristics of clamped carbide tools when machining Ti alloys and XISI 4340 steel are compared. A hard finishing grade cast iron type carbide was found to be
The Cold Extrusion of Circular Rods Through Square Multiple Hole Dies. I,. C. Tfndeja and Vi’. Johnson. joz~vnai ~1 t& J1r~chunic.s a~?d: Physics 01 .S~lid~, \w. .j, no. 4, ,957, I_‘, LSI-295 + j plates. I)rtermination of pressure necessary to col(lextrntle pnre I+, tellurium I%, pnre Sn, anll super-pure .JIl through 90” dies containing up to four hi)tcs arrangetl in different patterns. Extrusion of a Complex Shape Through a Round Die. \Villiam I<. Ray. ~IP/u/ F’vogrr.ss. v. 72, Sept. 19,j7, 1’. b-j-00. .\ long, straight control rod of I’-shaped cross sectjon for a nuclear reactor is made by canning flat cermet compacts, assembling them with al~l~ropriate inset-ts of soft steel to fill ;I scaletlshcath, hot-extruilinp the combinaticm, and then dissolving the soft steel lnscr’ts 111 acid, lea\.ing behind the rcquiretl stainlcssclad rotl.
Laws Governing the Drawing of Metals in the Presence of Lubricants. (in Russian) S. Ia. Vciler and V. 1. T,ikhtman. ~~(j~~~~~. ;1 kodenziz _Vauk SSSK, v. I I 4, no. b, June 2 f , ‘957, p. lL&+-“27. Friction and tlrawlng of metals. llse of lubricants. t:ormulas ant1 methods of calculation.