US3792851A - Automatic vise jaw - Google Patents

Automatic vise jaw Download PDF

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Publication number
US3792851A
US3792851A US00242181A US3792851DA US3792851A US 3792851 A US3792851 A US 3792851A US 00242181 A US00242181 A US 00242181A US 3792851D A US3792851D A US 3792851DA US 3792851 A US3792851 A US 3792851A
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Prior art keywords
cylinder block
main housing
cylinders
linkage
air
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Expired - Lifetime
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US00242181A
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English (en)
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P Newswanger
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Individual
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Individual
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    • 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
    • B25B1/18—Arrangements for positively actuating jaws motor driven, e.g. with fluid drive, with or without provision for manual actuation

Definitions

  • ABSTRACT An automatic vise jaw wherein the movable jaw is urged toward a fixed vise jaw by means of a crank operated screw.
  • the movable jaw includes a housing which terminates forwardly at the movable jaw pressure plate and a cylinder block which is in slideable contact with the housing.
  • the crank operated screw affixes to the cylinder block to maintain the block in a stationary preset position during operation of the device.
  • a pair of airrcylinders are provided in the cylinder block which function pistons forwardly and rearwardly in response to applied air pressure.
  • Interconnecting linkage pivotally connects between the cylinder block and the main housing and functions to slide the main housing relative to the cylinder block upon application of air pressure to the cylinders. By employing suitable leverage, the linkage serves to substantially increase the pressure available at the movable jaw over that applied at the air cylinders and to rapidly apply the increased pressure at the pressureplate for work holding purposes.
  • PAIE FEB 1 s 1914 SHEH 3 BF 3 BACKGROUND OF THE INVENTION The present invention relates generally to the field of machine tools, and more particularly, is directed to an automatic vise jaw for use in holding various work pieces for machine operation.
  • the present invention relates to the field of automatic vise jaws, and more particularly, is'directed to an air cylinder operated movable jaw capable of rapidly applying and releasing greatly multiplied hydraulic pressure for work holding purposes.
  • the present invention is compatible for use with most vises which arepresently in place on various machine tools, such as, milling machines and drill'presses as manufactured by Bridgeport Machine Tool Company.
  • the existing fixed jaw construction and the usual main vise crank operated screw are employed in well known manner and are re-used in conjunction with the present invention.
  • the existing movable jaw is first removed from the vise and is replaced by a movable jaw which is fabricated in accordance with the present invention as hereinafter more fully set forth, a cylinder block is employed which has been machined to accommodate a pair of juxtaposed air cylinders for pressure plate ac tuation by air pressure.
  • a piston is associated with each air cylinder which is arranged for double action wherein the pistons are reciprocated forwardly to function linkage for work holding purposes and rearwar'dly for purposes of rapidly releasing the work.
  • the pistons and associated piston rods function linkage which is suitably pivoted within the movable jaw construction between the cylinder block and the movable housing to exert a greatly increased ratio of pressure upon a work contacting pressure plate.
  • the pressure plate forms the forward face of the movable housing and in conjunction with the existing vise fixed jaw, provides the work holding and work contacting components.
  • the machine operator turns the main vise screw by means of the crank to propel the movable jaw until the work piece is loosely held.
  • the part to be machined is freely held between the fixed jaw of the vise and the pressure plate of the movable jaw with a clearance of approximately one sixty-fourth of an inch therebetween.
  • Energization of the air cylinders causes the pistons to activate the linkage which in turn pivots to forwardly press the main housing and the affixed pressure plate a sufficient distance to securely hold the work piece between the fixed jaw and the pressure plate.
  • An entire length of travel of only approximately 0ne-sixteenth of an inch has been found suitable for this purpose.
  • FIG. 1 is a perspective view of a vise assembly incor porating the present invention.
  • FIG. 2 is a bottom plan view taken along line 22 of FIG. 1, looking in the direction of the arrows and showing the pressure in the retracted position.
  • FIG. 3 is a cross sectional view taken along line 33 of FIG. 2, looking in the direction of the arrows and partially broken away to expose interior construction details.
  • FIG. 4 is a cross sectional view taken along line 44 of FIG. 3, looking in the direction of the arrows and showing the pressure in its pressure applying position and partially broken away to expose interior construction details.
  • FIG. 5 is a cross sectional view taken along line 55 of FIG. 4, looking in the direction of the arrows.
  • FIG. 6 is a cross sectional view taken along line 66 of FIG. 5, looking in the direction of the arrows.
  • FIG. 7 is a cross sectional view taken along line 77 of FIG. 6, looking in the direction of the arrows and showing the hollow air shaft in position to advance the movable jaw.
  • FIG. 8 is a cross sectional view similar to FIG. 7, showing the hollow air shaft in position to retract the movable jaw.
  • a machine vise 10 which includes a stationary base 12 which is adaptable to be mounted upon the table 14 of a conventional machine tool such as a milling machine or a drill press 16.
  • the stationary base 12 conventionally mounts upon the table 14 by utilizing mounting bolts 18 for other suitable fastening means in well known manner.
  • the stationary base 12 forwardly supports the fixed vise jaw 20 and terminates rearwardly in a conventional vertical support 22 in the usual manner.
  • the vertical support 22 is provided with an internally threaded opening which threadedly receives main vise screw 24 in conventional threaded engagement therein.
  • the main vise screw 24 terminates rearwardly in a rectangular end 26 to re'movably receive a crank handle (not shown) in conventional manner.
  • the main vise screw 24 forwardly engages the movable vise jaw 28 and serves to move themovable vise jaw 28 relative to the stationary base 12 to secure a work piece in the vise 10.
  • the movable jaw 28 may be moved forwardly or rearwardly in conventional manner relative to the stationary base 12 to thereby vary the spacing between the pressure plate 30 of the movable vise jaw 28 and the fixed plate 32 of the fixed vise jaw 20.
  • the movable vise jaw includes a cylinder block 34 which is in sliding engagement within the main housing 36.
  • An opening 38 is provided in the rear wall 40 of the main housing 36 through which the forward end of the main vise screw 24 is positioned;
  • the cylinder block 34 is drilled and machined to provide a threaded socket 42 which receives the forward end of the main vise screw 24 therein. It will be noted that there is no connection between the main housing 36 and the main vise screw 24 so that function of the air cylinders 44, 46 will result-in movement of the main housing 36 relative to the cylinder block 34 which will be retained in stationary relationship by means of the main vise screw 24 as hereinafter more fully set forth.
  • the cylinder block 34 is drilled or otherwise treated to provide a pair of spaced, longitudinally extending air cylinders 44, 46.
  • a pair of similar pistons 48, 50 respectively reciprocate within the air cylinders 44, 46 when air pressure is applied and longitudinally reciprocate their respective associated piston rods 52, 54.
  • An air intake assembly 56 mounts upon the side of the main housing 36 and is provided with an air inlet connection 58 which is of conventional design to receive an air hose 60 in an air tight junction.
  • the air intake assembly 56 includes an operating handle 62 which is connected in conventional manner to turn a partially hollow shaft 64 which is rotatably mounted within the air intake assembly block 66. See 'FIGS. 6, 7 and 8.
  • the shaft 64 is machined to provide a cylindrical, hollow interior passage 68 which is subdivided into two equal portions by a medially positioned block 70 to effectively subdivide the air passage 68 into right and left air compartments 72, 74.
  • the air intake assembly block 66 is affixed to the cylinder block 34 by means of a pair of threaded, hollow bolts 76, 78, each of which is respectively provided with an interior air channel 80, 82 to permit passage of air from the hollow shaft air passage 68 to the cylinders 44, 46 in a manner hereinafter more fully set forth.
  • the air intake assembly block 66 is provided with a pair of short air passages 84, 86 which respectively communicate between a bolt air channel 80, 82 and therespective right and left compartments 72, 74 of the hollow air passage 68.
  • air from the right air compartment 72 can be introduced into and received from the hollow bolt air channel 82 and air from the left compartment 74 can be introduced into and received from the hollow bolt air channel through the respective short air passages 84, 86.
  • the air intake assembly block 66 is additionally drilled to provide communicating passages '88, to respectively connect the right and left compartments 72, 74 with the air inlet connection 58.
  • the hollow shaft 64 is provided with right openings 92, 94 which register with the short air passage 86 and the communicating passageway 88 when the handle 62 is turned to a first position. See FIG. 7.
  • the hollow shaft 64 is drilled to provide a pair of left openings 96, 98 which communicate with the short air passage 84 and the communicating passageway 90 when the handle 62 is turned to its second position. See FIG. 8.
  • the left compartment 74 is drilled to providea bleed opening 100 which communicates with a short air passage 84 when the handle 62 is turned to its first position as in FIG. 7.
  • the right compartment 72 is similarly provided with a bleed opening 102 which communicates with'the short air passage 86 when the handle 62 is turned to'its second position as in FIG. 8.
  • a rearward transverse air duct 104 is drilled through the cylinder block 34 and the main housing 36 and communicates with the hollow bolt air channel 82.
  • the air duct 104 communicates with the respective pressure sides 108, of the cylinders 44, 46 through the respective cylinder block opening 112, 114. Accordingly, when the operating handle'62 is turned to its first position as in FIG. 7, air from the air hose 60 is introduced through the air inlet connection 58 through the communicating passageway 88 into the right compartment 72 of the hollow air passage 68. The pressurized air is introduced into the short air passageway 86 through the right opening 92 to pressurize the air duct 104 through the hollow bolt air passage 82.
  • the piston rod 52 terminates forwardly in a generally U shaped connector 126 and is directly connected thereto by means of the pin 128.
  • the piston rod 54 terminates forwardly in a second U shaped connector 130 and is directly connected thereto by means of the pin 132. Accordingly, when the piston rods 52, 54 are urged forwardly and rearwardly by air pressure introduced through movementof the handle 62, the U shaped connectors 126, 130 similarly move forwardly and rearwardly toward and away from the fixed jaw 32 of the vise.
  • the operating linkage system 1 l6 comprisesa pair of 7 reciprocate their respective affixed piston rods 52, 54, the respective connections between the grooves 144, 148 and the cam curved surfaces 142, 146 of the levers 134, 136 pull the ends of the levers in the direction of action of the pistons.
  • the second end 150 of the L- shaped levers 134 is widened to accommodate a pair of spaced pivots 152, 154 to provide a crank action. It will be noted that the length of the levers 134 is many times greater than the distance between the pivots 152, 154 to thereby generate great leverage forces.
  • the pivot 152 interconnects between the main housing 36 and the Lshaped levers 134.
  • the pivot 154 connects the rear section of the second lever end 150 with the operating links 156 in a pivotal connection.
  • the other end of the operating links 156 are pivotally connected with the main cylinder block, 34 in a pinned, pivotal connection 158.
  • the second end 160 of the L-shaped levers 136 are pivotally connected to the main housing 36 at the pivot 162 and rearwardly connect to the operating links 164 by means of the pivotal connection 166.
  • the other end of the operating links 164 pivotally connects to the cylinder block 34 in a pivotal connection 168. It will be noted that all of the levers comprising the operating linkage system 116 are generally L-shaped in configuration and are pivoted about the foot of the L.
  • levers 134, 136 are also pivoted at the foot of the L at the pivotal connections 154, 166 with the operating links 156, 164 in a manner to move the main housing 36 relative to the cylinder block 34 when the pistons ,48, 50 are activated.
  • the configuration of the operating linkage system 116 builds tremendous pressures for work holding purposes due to the leverage available. It will be noted that when all three pivot points 152, 154, 158'and 162, 166, 168 lie in the same plane, maximum pressure is then applied to the work for work holding purposes.
  • the total length of travel of the movable pressure plate 30 is preferably approximately one-sixteenth of an inch so that there is no possibility of a workman having his fingers crushed by the automatic operation of the device.
  • the left air compartment 74 is provided with a bleed opening 168 which registers with the lead opening 170 which is drilled through the air intake assembly block 66 for relief of air from one side of the cylinder 44, 46 when the other side is pressurized.
  • the right compartment 72 of the hollow air passage 68 is provided with a bleed opening 172 which registers with the bleed opening 174 which is drilled through the air intake assembly block 66 when the handle 62 is moved to the position of FIG. 8 for air bleeding purposes.
  • said cylinder block being drilled to provide cylin-' ders and air passages to the cylinders;
  • B a main housing associated with the cylinder block and being slidable with respect thereto,
  • said main housing being movable from a rearward position to a forward, work holding position upon pressurization of the said cylinders
  • said linkage including cam curved surfaces
  • the medially pinned connection includes pins associated with the levers disposed in a first direction, said pins riding within elongated slots which are provided in the said levers which are disposed in the opposite direction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Jigs For Machine Tools (AREA)
US00242181A 1972-04-07 1972-04-07 Automatic vise jaw Expired - Lifetime US3792851A (en)

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US24218172A 1972-04-07 1972-04-07

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US (1) US3792851A (enrdf_load_stackoverflow)
JP (1) JPS498899A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101920457A (zh) * 2010-04-02 2010-12-22 无锡华联精工机械有限公司 端面铣液工作台机构
CN103128592A (zh) * 2013-03-28 2013-06-05 无锡华联精工机械有限公司 大型端面铣工作台
CN103143970A (zh) * 2013-03-28 2013-06-12 无锡华联精工机械有限公司 大型端面铣工作台侧推装置
CN104802001A (zh) * 2015-05-04 2015-07-29 深圳市富士杰智能技术有限公司 一种气动台钳
US20170106502A1 (en) * 2014-07-30 2017-04-20 Kawatatec Corp. Feed Structure and Gripping Device Including Same
CN106984990A (zh) * 2017-05-26 2017-07-28 东台市万顺市场信息咨询有限公司 一种机械用夹持力度可调节夹具
CN108972077A (zh) * 2018-08-06 2018-12-11 上海理工大学 内扣汽车灯罩孔立铣夹具

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS567415Y2 (enrdf_load_stackoverflow) * 1976-11-05 1981-02-18
JPS59105366U (ja) * 1982-12-28 1984-07-16 武藤工業株式会社 万力装置
JPS62147458U (enrdf_load_stackoverflow) * 1987-03-12 1987-09-17

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2530085A (en) * 1946-12-20 1950-11-14 Keller Tool Co Air-operated vise with improved actuator and adjustment means
US2896515A (en) * 1958-03-10 1959-07-28 Acme Prec Products Inc Vise
US2987972A (en) * 1957-09-12 1961-06-13 Hilma G M B H Maschf Hydraulic vise
AT246520B (de) * 1964-04-04 1966-04-25 Kieserling & Albrecht Vorrichtung zum Einspannen von Werkstücken wie Stangen oder Rohren, insbesondere für Spannwagen von Schälmaschinen
US3603579A (en) * 1969-05-22 1971-09-07 John E Odom Fluid-actuated vises

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2530085A (en) * 1946-12-20 1950-11-14 Keller Tool Co Air-operated vise with improved actuator and adjustment means
US2987972A (en) * 1957-09-12 1961-06-13 Hilma G M B H Maschf Hydraulic vise
US2896515A (en) * 1958-03-10 1959-07-28 Acme Prec Products Inc Vise
AT246520B (de) * 1964-04-04 1966-04-25 Kieserling & Albrecht Vorrichtung zum Einspannen von Werkstücken wie Stangen oder Rohren, insbesondere für Spannwagen von Schälmaschinen
US3603579A (en) * 1969-05-22 1971-09-07 John E Odom Fluid-actuated vises

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101920457A (zh) * 2010-04-02 2010-12-22 无锡华联精工机械有限公司 端面铣液工作台机构
CN103128592A (zh) * 2013-03-28 2013-06-05 无锡华联精工机械有限公司 大型端面铣工作台
CN103143970A (zh) * 2013-03-28 2013-06-12 无锡华联精工机械有限公司 大型端面铣工作台侧推装置
CN103128592B (zh) * 2013-03-28 2015-09-16 无锡华联精工机械有限公司 大型端面铣工作台
US20170106502A1 (en) * 2014-07-30 2017-04-20 Kawatatec Corp. Feed Structure and Gripping Device Including Same
US9676081B2 (en) * 2014-07-30 2017-06-13 Kawatatec Corp Feed structure and gripping device including same
CN104802001A (zh) * 2015-05-04 2015-07-29 深圳市富士杰智能技术有限公司 一种气动台钳
CN106984990A (zh) * 2017-05-26 2017-07-28 东台市万顺市场信息咨询有限公司 一种机械用夹持力度可调节夹具
CN108972077A (zh) * 2018-08-06 2018-12-11 上海理工大学 内扣汽车灯罩孔立铣夹具
CN108972077B (zh) * 2018-08-06 2020-10-09 上海理工大学 内扣汽车灯罩孔立铣夹具

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Publication number Publication date
JPS498899A (enrdf_load_stackoverflow) 1974-01-25

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