US3902707A - Drive spindle for a vise - Google Patents

Drive spindle for a vise Download PDF

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Publication number
US3902707A
US3902707A US425874A US42587473A US3902707A US 3902707 A US3902707 A US 3902707A US 425874 A US425874 A US 425874A US 42587473 A US42587473 A US 42587473A US 3902707 A US3902707 A US 3902707A
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US
United States
Prior art keywords
coupling
sleeve
coupling member
pressure
drive spindle
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
US425874A
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English (en)
Inventor
Peter Preisenhammer
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.)
Saurer Allma GmbH
Original Assignee
Saurer Allma GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19722262383 external-priority patent/DE2262383C3/de
Application filed by Saurer Allma GmbH filed Critical Saurer Allma GmbH
Application granted granted Critical
Publication of US3902707A publication Critical patent/US3902707A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/06—Arrangements for positively actuating jaws
    • B25B1/10—Arrangements for positively actuating jaws using screws
    • B25B1/106—Arrangements for positively actuating jaws using screws with mechanical or hydraulic power amplifiers

Definitions

  • a hollow spindle nut is provided on the side facing the D 20 1972 G 2262383 outer end of the drive spindle and defines a coupling many part.
  • a coupling sleeve is axially movable and is secured in the sleeve and cooperates with the coupling 5 269/228 269/221 29 1 715 part.
  • the coupling sleeve has an opening therein for receiving a crank pin and has two additional axially [58] held of Search 269/221 321 ME longitudinally extending slots for receiving a carrier bolt therein.
  • chine vises having a force or pressure multiplying mechanism therein.
  • a drive spindle is rotatable by a handcrank and acts onto a primary pressure member.
  • the invention relates to a hollow spindle for chuck ing apparatus. particularly vises having a mechanical or hydraulic pressure multiplying mechanism therein and in which a drive spindle which is rotatable by a hand crank acts onto the prmary pressure member of the multiplying mechanism.
  • which drive spindle is fixedly connected at the outer end by a radial carrier bolt to a sleeve which is rotatably supported 011 the hollow spindle end and can be screwed in a nut which is fixedly arranged in the hollow spindle end.
  • which nut is constructed as a coupling part of a torque coupling and cooperates with a spring-loaded coupling ring which is arranged longitudinally movably. however, secured against rotation. on the inner end of the drive spindle.
  • a mechanical pressure multiplying mechanism which consists of two oppositely positioned bent lever pairs which are arranged in a horizontal plane, which pairs of bent levers are supported on one side on the drive spindle and on the other side on the sliding member. These pairs of bent levers are pressed outwardly by the forward movement of a pressure memher.
  • a rotatable stop is provided in the sliding member which has two or three stop surfaces for the pressure member. However. only two or three chucking pressures can be adjusted roughly with said rotatable stop. Furthermore.
  • the basic purpose of the present invention is to produce by avoiding the aforementioned disadvantages a hollow spindle. particularly for vises having a pressure multiplying mechanism. in which the tension achieved with the pressure multiplying mechanism can be adjusted as desired or sensitively. nam'ely from zero up to a maximum chucking force.
  • a further basic purpose of the invention is to perfectly chuck flexible workpieces. for example sheet packs.
  • a hollow spindle is provided for chucking apparatus of the type mentioned above.
  • the hollow spindle nut is provided also on the side facing the outer end of the drive spindle and defines a coupling part.
  • a coupling sleeve is axially movable and secured in the sleeve and cooperates with the aforementioned coupling part.
  • the coupling sleeve has an opening therein for receiving a crankpin and two axial longitudinal slots 6 r passage of the carrier bolt and these are arranged in such a manner that prior to the start of the chucking operation. the distance of said coupling sleeve from the coupling nut can be adjusted from zero to a maximum value.
  • FIG. 1 is a longitudinal cross-sectional view of a hollow spindle for chucking apparatus, particularly vises. having driving members in the normal position;
  • FIG. 2 is the front view as viewed in direction II of FIG. 1'.
  • FIG. 3 is a longitudinal cross-sectional view taken along the line IIIIII of FIG. 1., whereby the upper longitudinal cross-sectional view shows the driving members in the normal position and the lower longitudinal cross-sectional view shows the driving members in the chucking position.
  • the drive spindle 4 is fixedly connected at the outer right end 4a by a radially extending carrier bolt or pin 5 to a sleeve 6.
  • the drive spindle 4 is rotatably supported in the hollow spindle end la and can be screwed into a nut 7 fixedly arranged in the end of the hollow spindle l.
  • the nut 7 defines a coupling part for a torque coupling and cooperates with a coupling ring 9 which is biased or loaded by a spring 8.
  • the coupling ring 9 is arranged longitudinally movably on the inner end 4b of the drive spindle, however, secured against rotation relative to the drive spindle 4.
  • the force or pressure multiplying mechanism consists in the illustrated exemplary embodiment of two oppositely positioned pairs 10 of toggle levers or a plurality of toggle or several pairs of bent levers arranged concentrically around a conical wedge 2 within the spindle 1.
  • Each of the pairs of bent levers are pressed apart by an advance in the direction A (FIG. 1) of the conical end 2a of the pressure member 2.
  • the pairs of bent levers are thereby supported on one side on the hollow spindle 1 against a thrust ring 11 and on the other side on the sliding member of the vise v which. during an advance of the pressure member 2, is also moved in direction A.
  • the hollow spindle nut 7 is constructed also on the side which faces the outer end 4a of the drive spindle as a coupling part.
  • the spindle nut 7 is provided with coupling noses 12.
  • a coupling sleeve 13 is axially movable and secured against rotation relative to the sleeve 6 and cooperates with the aforementioned coupling part.
  • the coupling sleeve I3 has coupling noses 14 which. for ex ample. cooperate with the noses l2 and furthermore there is provided in said coupling sleeve a multi-cdged opening 15 for inserting a multiedged crankpin 16 of the handcrank 3.
  • two axial longitudinal slots 17 are provided in the coupling sleeve 13 for passage of the carrier bolt 5 so that. prior to the start of the chucking operation, the distance onof said coupling sleeve I3 from the coupling nut 7 can be adjusted from zero to a maximum amount by rotating a locking ring I8 relative to the sleeve 6.
  • the rotatable locking ring 18 is arranged between the sleeve o and the coupling sleeve 13, which locking ring 18 is supported axially on a collar 19 of the coupling sleeve 13 and has at least one thread groove 18a on the periphery thereof.
  • two thread grooves 18a are provided into which extend radial guide pins 20 which are secured in the sleeve 6.
  • a locking device is provided between the locking ring 18 and the coupling sleeve 13 to lock the locking ring in various rotary positions.
  • This locking device consists of axially extending grooves 21 which are provided in the locking ring and a leaf spring 22 which is secured on the coupling sleeve 13 and which is received in said grooves.
  • one marking 23 is provided on the front side of the coupling sleeve 13 and six markings to on the locking ring l8..ln the illustrated embodiment (FIGS. 1 and 2), the maximum chucking pressure 5 is being exerted, namely the marking 5 of the locking ring is aligned with the marking 23 of the coupling sleeve. At this adjustment a maximum distance a between the coupling sleeve 13 and coupling nut 7 is adjusted.
  • pressure springs 24 are provided which are supported on one side on the collar 19 of the coupling sleeve 13 and on the other side indirectly on the sleeve 6 and which are arranged in such a manner that the coupling sleeve 13 can be moved from each setting by an axial pressure applied to the handcrank 3 in the direction A against the spring pressure until engagement occurs between the coupling nut 7 and the coupling 13.
  • a thrust ring 25 is provided which is loosely moved onto the carrier bolt 5 accordingto FIG. 3.
  • the hollow spindle 1 stops. During further rotation of the handcrank the friction coupling 9 releases so that then the drive spindle 4 is screwed into the stationary nut 7 and the pressure member 2 is advanced by the spindle end 4/; and thus a pressure multiplication is achieved. Since during the rotation of the coupling sleeve 13 with the handcrank 3, said coupling sleeve 13 is simultaneously moved in direction A then finally the coupling noses l2 and 14 of the coupling parts 7 and l3 engage one another. Since, however, the hollow spindle I'with the nut 7 is now stationary, the coupling noses 12 form a fixed stop for the coupling noses 14 (see FIG. 3, longitudinal cross-sectional view).
  • the'coupling sleeve I3 can only be rotated until it reaches this fixed stop.
  • the tension of the pressure multiplying mechanism depending on the aforementioned adjustment is limited to a certain value which can even be reduced to zero.
  • the adjustment of 0 to 5 can thereby be adjusted stcplessly to any desired maximum pressure tension.
  • the desired maximum tension of the pressure multiplying mechanism is first adjusted by rotating the locking ring 18 relative to the sleeve 6. Then by applying pressure onto the handcrank 3 in axial direction A, the coupling sleeve 13 is moved against the pressure of the springs 24 until these two coupling parts abut one another and the coupling noses l2 and 14 cooperate so that therewith the two coupling parts 7 and 13 are connected with one another. By rotating the handcrank 3 in this position, the hollow spindle l is then rotated and therewith a sufficiently high pretension is produced which effects the compression of the flexible workpiece, for example of the sheet pack.
  • a nose 26 is provided on said handcrank which nose can be inserted into a groove 27 of the locking ring.
  • a drive spindlemechanism for opening and closing a vise having means defining a hollow spindle which is adapted to be rotatably driven by means of a handcrank through means defining a drive spindle and a torque coupling releasable upon the application of a predetermined amount of torque thereto, said hollow spindle means including means defining an internally threaded nut fixedly mounted thereon, said drive spindle means including a drive spindle and means defining an external thread thereon threadedly engaging said internal thread of said nut means, a longitudinally movable force applying pressure member and a plurality of toggle lever means cxpandible in length in response to an axial movement of said pressure member relative to said hollow spindle means caused by an application of said predetermined amount of torque to thereby permit a relative rotation between said drive spindle and said nut means. the improvement comprising:
  • coupling means for coupling said handcrank to said drive spindle.
  • said coupling means including a hollow sleeve and a coupling member received in the interior of said hollow sleeve and fastening means for fastening said coupling member and said sleeve to said drive spindle to prevent a relative rotation thcrcbetween while simultaneously permitting a relative axial movement between a first position wherein said coupling member is spaced at varying locations from said nut means and a second position wherein said coupling member is adjacent said nut means, both of said nut means and said coupling member having cooperating coupling parts thereon becoming coupled together when said coupling member is in said second position; and control means for controlling the initial spacing between said coupling parts on said coupling member and said nut means before said vise is closed, said initial spacing controlling the amount of relative axial movement between said drive spindle and said nut means upon the application of said predetermined amount of torque to said torque coupling to thereby limit the amount of pressure applied to said toggle lever means by said
  • control means comprises a locking ring located between said coupling member and said sleeve, said locking ring engaging an axially facing side on said coupling 6 member and adjusting means for effecting an axial movement of said locking ring and thence said coupling member relative to said sleeve to move said coupling member between said first and second positions.
  • said adjusting means for effecting said simultaneous axial movement of said locking ring and said coupling member comprises an annular thread groove in one of said sleeve and said coupling member and a radial guide pin in the other of said sleeve and said coupling member received in said thread groove.
  • said adjusting means includes releasable locking means for releasably locking said sleeve to said coupling member in said varying locations of said first position.
  • said pressure spring is connected to said sleeve at a location between said coupling member and said nut means, said connection being comprised of a pressure ring mounted internally of said sleeve, said fastening means including a bolt member connecting said coupling member and said sleeve to said drive spindle, said pressure ring including means cooperable with said bolt member to secure said pressure ring to said sleeve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Jigs For Machine Tools (AREA)
US425874A 1972-12-20 1973-12-18 Drive spindle for a vise Expired - Lifetime US3902707A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722262383 DE2262383C3 (de) 1972-12-20 Hohlspindel für Spanngeräte, insbesondere Maschinenschraubstöcke mit mechanischem Antrieb und mechanischem oder hydraulischem Druckverstärker

Publications (1)

Publication Number Publication Date
US3902707A true US3902707A (en) 1975-09-02

Family

ID=5864965

Family Applications (1)

Application Number Title Priority Date Filing Date
US425874A Expired - Lifetime US3902707A (en) 1972-12-20 1973-12-18 Drive spindle for a vise

Country Status (5)

Country Link
US (1) US3902707A (de)
JP (1) JPS5242279B2 (de)
ES (1) ES421534A1 (de)
FR (1) FR2211326B3 (de)
SU (1) SU588907A3 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4899999A (en) * 1987-10-07 1990-02-13 Fresmak S.A. Machine vice with force amplifier
US5192061A (en) * 1991-04-17 1993-03-09 Gressel Ag Clamp element, including a rapid feed device combined with a force amplifier
US5251887A (en) * 1990-06-07 1993-10-12 Franz Arnold Machine vise for clamping a workpiece
EP1452273A1 (de) * 2003-02-26 2004-09-01 Samchully Machinery Co., Ltd. Einheit zum Einstellen der Spannkraft für einen Schraubstock
EP1529600A1 (de) * 2003-10-07 2005-05-11 Fresmak, S.A. Schraubstock

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2710424A1 (de) * 1977-03-10 1978-09-14 Roehm Guenter H Spanneinrichtung, insbesondere maschinenschraubstock
DE4127772C2 (de) * 1991-08-22 1996-06-05 Kesel Georg Gmbh & Co Kg Mechanischer Kraftverstärker

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3400924A (en) * 1964-04-07 1968-09-10 Arnold Franz Clamping device
US3650522A (en) * 1968-12-03 1972-03-21 Gressel Ag Mechanical clamping device, in particular machine vice
US3807721A (en) * 1970-12-10 1974-04-30 F Arnold Mechanical clamping device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3400924A (en) * 1964-04-07 1968-09-10 Arnold Franz Clamping device
US3650522A (en) * 1968-12-03 1972-03-21 Gressel Ag Mechanical clamping device, in particular machine vice
US3807721A (en) * 1970-12-10 1974-04-30 F Arnold Mechanical clamping device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4899999A (en) * 1987-10-07 1990-02-13 Fresmak S.A. Machine vice with force amplifier
US5251887A (en) * 1990-06-07 1993-10-12 Franz Arnold Machine vise for clamping a workpiece
US5192061A (en) * 1991-04-17 1993-03-09 Gressel Ag Clamp element, including a rapid feed device combined with a force amplifier
EP1452273A1 (de) * 2003-02-26 2004-09-01 Samchully Machinery Co., Ltd. Einheit zum Einstellen der Spannkraft für einen Schraubstock
EP1529600A1 (de) * 2003-10-07 2005-05-11 Fresmak, S.A. Schraubstock
ES2257129A1 (es) * 2003-10-07 2006-07-16 Fresmak, S.A. Tornillo de banco.

Also Published As

Publication number Publication date
FR2211326A1 (de) 1974-07-19
FR2211326B3 (de) 1976-10-15
DE2262383B2 (de) 1976-02-19
SU588907A3 (ru) 1978-01-15
DE2262383A1 (de) 1974-07-04
JPS5242279B2 (de) 1977-10-24
JPS4996400A (de) 1974-09-12
ES421534A1 (es) 1976-04-16

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