US1921502A - Puppet head - Google Patents

Puppet head Download PDF

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Publication number
US1921502A
US1921502A US438558A US43855830A US1921502A US 1921502 A US1921502 A US 1921502A US 438558 A US438558 A US 438558A US 43855830 A US43855830 A US 43855830A US 1921502 A US1921502 A US 1921502A
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US
United States
Prior art keywords
pressure
casing
liquid
pin
work
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US438558A
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English (en)
Inventor
Brill Karl Friedrich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
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Publication of US1921502A publication Critical patent/US1921502A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B23/00—Tailstocks; Centres
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T82/00—Turning
    • Y10T82/25—Lathe
    • Y10T82/2564—Tailstock

Definitions

  • This invention relates to a ⁇ puppet head which is 'especially suited for lathes ⁇ designed to" work large and lheavy works.
  • This invention has for its object the avoidance of the. said inconvenience by'taking into consideration they construction of the puppet head the alterations in length of the Work occuring during the treatment, the facilitating of the fixing of e i the work by reducing thepforce to be exerted ⁇ *by the hand owing to hydraulic' pressing of the dead center into the centering bore of the worlahand'k the securing of the'work inthe fixed position against dropping out by limiting thefshifting movement of the hydraulically'moved'elemenu -Further objectsand advantages ofthe invention will behereinafter explainedand are illustrated in the ⁇ accompanying drawings which show several embodiments of 'the invention',
  • Fig. 1 is a partialv longitudinal sectionthrough the preferred form of construction, in which the pressure liquid is supplied from arseparate4 source.
  • Fig.v 2 shows the puppet. head Fig.- ⁇ 1k partly in cross section on line 2,-2 of Fig. 1 fon,enlargedA Y scale.
  • Fig. 3 is a partiallongitudinal section ythrough a puppet head, in which theliquid pressure" is produced by means of a displacer.
  • y 5 Figs. 4 and -5 show part longitudinalsections through puppet heads with air buffer connected f to the pressurel chamber.
  • Figs. 6 and 7 are part' longitudinal sections through puppet heads withfcontact manometer for regulation of the liquid pressure, A liquid being supplied to the puppet head shown in Fig. 6 through a separate conduit, whereas in the puppet head shown in Fig. 'l the pressure ofthe liquid is produced by means of the displaccr.l
  • the dead center 4 is arranged in the pin 'partl. constructed as plunger. Behind the .part 1 00 a'chamber-'I'is arranged, which is designed to hold pressure liquid.” ⁇
  • the movability of the pin part v1 carrying the-dead centre standing under the influence of the pressure liquid in the chamber is during the' ⁇ treatment atleast equal to the maximum expansion "of the fixedv work and 'amounts at the futmost to about. oneA half of the depth to which the dead center engages with the centering bore of the work.
  • the chamber 'I is formed by the subdivision of thecasing 3 by -jrneans of-a stufling box 9 provided in the chamber and ,formed by an annular projection in the casing. n.
  • the pinpart 1 has an extension 8 extending towardsgthe rear pin part 2 and engaging with a-bore of the latter.
  • the rear pin part2 rand theextension 8 are 'connected with each other by a connecting element, consisting of-a wedge 10, .extending through "the rear part 2 and through the extension 8.
  • - and2the bore 48 extends in the pressure regulating element in lateral direction.
  • the manometer 26 is connected and adapted to be shut off from the pressure chamber by a cock 49.
  • An air cock 50 enables one to connect the, air buffer with the atmosphere.
  • the manometer 26 is condraining pressure liquid.
  • a pressure accumulator can be provided.
  • the pressure 'chamber .7 can also be connected with a spring vloaded pressure accumulator, thespring pressure being adjusted in accordance with the pressing-on lpressure vto be obtained.. WhenV such an accumulator is provided, separate valves are no longer necessary.
  • the accumulator forms already the element, which lpermits of the moving back and forward of the pressure liquid in accordance with the dead centre displacement required for the work,v without substantial pressure alteration.
  • a form of construction is clear without further explanation, it is not shown in the drawings.
  • i r l The form of construction illustrated in Fig. 6 differs Vfrom that shown in Fig. 4 in that instead of the simple manometer a Contact manometer57xof known type is provided, the electric wires 70 of which lead to a motor not shown, which drives a pump for the production of a pressure liquid but Aalso not shown. Motor and pump may be ar'- ranged on'the puppet head instead of the hand Y pump 11 shown in Fig. 2.
  • a displacer 20 is arranged in the hollow spindle 17 for producing the liquid pressure in the pressure chamber 7, said displacer being operated by the screw spindle 21 by means of a hand wheel 25.
  • a spring 22 is interposed between the displacer 20 and the screw spindle 21.
  • a manometer 23 is connected with the pressure chamber 7.
  • an air buffer 53 is connected with the pressure chamber 7 and. serves as pressure regulating element.
  • the manometer 54 is arranged on the air buffer and can be shut off from the pressure by 'means' of a cock 55.
  • the displacer 20 and the screw spindle 21 are made in one piece.
  • the pin casing 3 has 'an opening 24 in consideration of the shifting movement of the pin part 2" at the mechanical feed.
  • the packings on the pin part 1' and on the mechanically moved pin part 2 are designated by 56.
  • the wedge 10 extends through the pin part 2 and through the pin part 1' and it has in the pin part 2" a' clearance 14. This clearance does not amount to more than half the depth at which the deadv centre engages with the centering bore of the-work.
  • a contact manometer 58 of known type is substituted for the manometer 54 of Fig. 5 and connected by leads 59, 59', 59" with a motor 60 adapted to be switched in in both directions of rotation.
  • the ⁇ sleeve 18, constructed as nut for the screw spindle 17, isdriven through av worm gear 61, operated by a'hand wheel 19.
  • a spur Wheel 63 is positively connected ⁇ by a key 64 with the spindle 21 of the displacer 20, said spindle being. capable of shifting in axial direction during the rotation, owing to its long groove65.
  • a pinion 66 on the shaft of the motor meshes with the spur wheel 63..
  • the motor "revolves in the one or other directions, according to Whether the contact manometer closes the electric circuit through the wires 59 and 59' or through the wires 59 and 59T', so that the displacer 20 is pulled out or pushed in according to requirement.
  • Ihe hand wheel 25 on' the displacerspindle 21 serves for the xing and for the operating by hand.
  • An optical or acoustic signal may be connected with the electric circuits, said signal being lighted or sounded, as soon as the adjusted pressure ofthe pressure liquid alters. ⁇
  • the dead centre is inserted by rotation of the hand v fbe'elf (Figs-1 and 4) or of the hand wheel r19 (Figs. 3 and 5) or of the handl wheel 19' (Figs. 7 and 8) into the centering bore 30 of the work 31, the mechanicallyperated pin part 2 and the' hydraulically operated pin part 1 being pushed forward.
  • the three way cock 33 connects, in the forms of construction shown in Figs. 1, 2, 4 and 6, the pressure chamber 7 with the collecting cup of the pump 11, as shown in Fig. 2, in order that at the forward moving of the pin part 1 liquid may be sucked into the pressure chamber 7 and forced out of the same at the mechanical pulling back.
  • pressure liquid is conducted into the pressure Figs. 3, 5, '7 and 8 the pressure is produced by the plunger penetrating into the pressure chamber filled with liquid.
  • a surface 68 of the wedge 10 and a surface 69 of the hydraulically operated pin part l are ⁇ pressed the one against the other.
  • these sur faces separate.
  • the mechanical pin part is pulled back, after the pressing-in, a distance equal to the The manometery permits of controlling whether a sufficient pressing-in pressure has been attained. If, when the work has been treated, alterations Vof length of the work occur, which require a pressure increase in the pressure chamber '7.
  • a pressure regulating element is built, which equalizes fluctuations of pressure.
  • v y l 'Ihe form of construction shownin Fig. 5 and in Fig. 3 is specially suitable for turning' lathes of medium size.
  • the contact manometer connected with thev air buffer in theform of construction shown in Fig. 6" switches in at pressure drop a motor not shown, which drives a pump, supplying a pressure liquid for the pressure chamber.
  • the contact manometer switches in a motor for both directions' of rotation, which either pulls out cr pushes in the displacenZO-according to requirement.
  • the contact manometer might be directly connected with the pressure chamber.
  • the invention is not limited to the forms of construction shown.
  • a puppet head comprising in combination a casinghaving a central longitudinal bore, a two part dead centre carrierin said casing composed ofr a -front .part and a rear part longitudinally shiftable in said casing, an extended axle extending towards thc interior of said casing.
  • a dead centre pin carried ⁇ in the front end of said carrier part the rear part of said carrier having a screwthread engaging the screw thread of saidextended axle a wheel on the end of said casing adapted to rotate said extended axle'and shift said rear carrier part in a pressure liquid chamber at the rear end of said front carrier part adapted tos act on the rear endo'said front carrier part, a coupling element connecting said front and rear carywith play extending plunger like into said chamber adapted to transmit the movement 'of said rear carrier part imparted by said extended axle to said front carrier part and to press affdisplacement of said front carrier with said dead centre pin according length of the work.
  • a puppet head comprising in combination, a casing having a central longitudinal bore, a two part dead centre carrier in said casing composed of a front part and a rear part longitudinally'shiftable in said casing, an extended axle extending vtowards the in-terior of said casing and having a screw thread.
  • a dead centre pin carried in ⁇ the front end of having a screw thread engaging the screw threadfof said extended axle a wheel on the end of said casing adapted toropart in said casing, a stuffing box in said casing :said carrier part the A depth of engagementof thedead centre said casing into two parts, a piston rod extensio'i'i on therear end of said front carrieripart exwith play vto the front end of'lsaid reaLca'rrierI part, a chamber lled with liquid betweenthe rear side of said front carrier part and the front vof said stuiiingbox adapted to act onsaid'front carrier part ⁇ in the ieed direction, .and a device connected to said chamber adapted to allow. the yielding and returning of the liquid in said charn- ⁇ ber and a displacement of said front carrier part with said dead center pin according to the alterations in length of the workpiece during the working.
  • a puppet head as specified in claim 1, comprising in combination Vwith the deadicentre pin, the front carrier part and the rearcarrierpart, a transverse pin extending throughl both of said carrier parts connecting said carrierparts with a certain amount of 'play not exceeding one half v of the depth of engagement of said ⁇ dead centre pin in the centering bore in the workpiece;
  • a puppet head comprising in combination a casing, a dead centre, a two part dead centre carrier shiftable in saidcasing composedI of a .front part carrying said dead centre anda shiftable rear .part having a screw thread,l an extended axle ⁇ extending into said casing and having a screw thread engaging the screw thread of said rear part, va wheel on-said axle at the Y, rear end of ⁇ said casing adapted to rotate said axle to shift said rear partv in said casing,l a coupling element'connecting said carrier parts with play adapted to transmit the movement of said rear carrier part to said front carrierpart, said iront carrier part being-constructed as cylinder i and containing pressure liquid and said rear part constructed as plunger adapted to press said front part against the work piece, and a device connected to said cylinder adapted to allow the Y liquid to automatically escape from and return into said cylinder according tol the variations in length of the eration.
  • A'puppet head comprising ⁇ in combination a casing, a dead centre, a, two part dead centre carrier shiftable in said casingcomposed of a front part carrying said dead centre and a shiftable rear part having a screw thread, an extended axle extending into said casing 4and havingl a screw thread'engaging the screw thread of said rear part, a wheel on said axle-at the rear ,end of :said casing adapted to rotate'said axle to shift said rear part in said casing, a coupling element connecting said carrier parts with play adapted to transmit the ⁇ movement of said rear carrier part to said front carrier part, said front carrier part being constructed as cylinder andrcontaining pressure liquid and said rear part constructed as ⁇ plunger adapted.
  • said front part having a longitudinal bore with screw thread at its rear end and communicating with said cylinder, a"displ ⁇ acer in said bore, a screw spindle engaging in the screw thread of said bore carrying said displacer on its front end extending through said wheel on the rear end of said casing, and a second wheel on Ithe rear end of said casing, a dead centre, a two part dead centre carrier ,shiftable in said casing composed of a front part carrying said dead centre and a shiftable rear part having a screw thread, an extended axle extending into said casing and having a screw threadengaging the screw thread of said rear part a wheel on said axle at the rear end of said casing adapted to rotate' said axle to shift said rear part in said casing
  • a casing, a dead centre, a two part dead centre carrier shiftable in said casing composed of a front part carrying ⁇ said dead centre and a shiftable rear part having a screw thread, an extended axle extending, into said casing and having a screw thread engaging the screw thread of said rear part, a wheel on said axle at the rear end' of said casing adapted 'to rotate said axle to shift saidrear part in said casing, a coupling element 'y connecting ⁇ ysaid carrier parts with play adapted totransmit the movement of saidy rear carrier part to said front carrier part, said front carrier part being constructed as cylinder and containing pressureliquid and said rear part constructed as plunger adapted to press said front partl against the work piece, and a Adevice connected to said cylinder adapted to allow the liquidto automatically escape from and Vreturn into said cylinder according to the variations in length of the work piece during the working operation said front partl having a longitudinal bore with screw thread at its rear

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Measuring Fluid Pressure (AREA)
  • Machine Tool Units (AREA)
  • Reciprocating Pumps (AREA)
US438558A 1929-03-27 1930-03-24 Puppet head Expired - Lifetime US1921502A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE342203X 1929-03-27

Publications (1)

Publication Number Publication Date
US1921502A true US1921502A (en) 1933-08-08

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ID=6238305

Family Applications (1)

Application Number Title Priority Date Filing Date
US438558A Expired - Lifetime US1921502A (en) 1929-03-27 1930-03-24 Puppet head

Country Status (5)

Country Link
US (1) US1921502A (enrdf_load_stackoverflow)
BE (1) BE368887A (enrdf_load_stackoverflow)
DE (1) DE515157C (enrdf_load_stackoverflow)
FR (1) FR692615A (enrdf_load_stackoverflow)
GB (2) GB342203A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198042A (en) * 1962-01-31 1965-08-03 Jack N Binns Roll lathe tailstock
US3653286A (en) * 1969-10-24 1972-04-04 Toyoda Machine Works Ltd Workpiece supporting device
US3731564A (en) * 1970-12-21 1973-05-08 Warner Swasey Co Machine tool
US4033210A (en) * 1976-10-15 1977-07-05 J & S Tool Company, Inc. Live center with hydraulic pressure indicator
US4048881A (en) * 1976-04-14 1977-09-20 Van Wood Manufacturing Co., Inc. Tailstock powering device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750097C (de) * 1939-03-06 1944-12-14 Fischer Ag Georg Reitstock fuer Werkzeugmaschinen
DE1182931B (de) * 1958-01-17 1964-12-03 Skf Kugellagerfabriken Gmbh Planscheibenlagerung fuer Karusselldrehmaschinen und aehnliche Maschinen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198042A (en) * 1962-01-31 1965-08-03 Jack N Binns Roll lathe tailstock
US3653286A (en) * 1969-10-24 1972-04-04 Toyoda Machine Works Ltd Workpiece supporting device
US3731564A (en) * 1970-12-21 1973-05-08 Warner Swasey Co Machine tool
US4048881A (en) * 1976-04-14 1977-09-20 Van Wood Manufacturing Co., Inc. Tailstock powering device
US4033210A (en) * 1976-10-15 1977-07-05 J & S Tool Company, Inc. Live center with hydraulic pressure indicator

Also Published As

Publication number Publication date
DE515157C (de) 1930-12-29
FR692615A (fr) 1930-11-07
GB345508A (en) 1931-03-26
BE368887A (enrdf_load_stackoverflow)
GB342203A (en) 1931-01-29

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