GB1217072A - Method and apparatus for automatic bar feed - Google Patents

Method and apparatus for automatic bar feed

Info

Publication number
GB1217072A
GB1217072A GB82868A GB82868A GB1217072A GB 1217072 A GB1217072 A GB 1217072A GB 82868 A GB82868 A GB 82868A GB 82868 A GB82868 A GB 82868A GB 1217072 A GB1217072 A GB 1217072A
Authority
GB
United Kingdom
Prior art keywords
bar
jaws
stem
chuck
turret
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
Application number
GB82868A
Inventor
Stepan Bloudicek
Antonin Pleva
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.)
ZD Y PRESNEHO STROJIRENSTVI GO
Original Assignee
ZD Y PRESNEHO STROJIRENSTVI GO
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
Application filed by ZD Y PRESNEHO STROJIRENSTVI GO filed Critical ZD Y PRESNEHO STROJIRENSTVI GO
Publication of GB1217072A publication Critical patent/GB1217072A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
    • B23Q7/04—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers
    • B23Q7/045—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers using a tool holder as a work-transporting gripper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B13/00—Arrangements for automatically conveying or chucking or guiding stock
    • B23B13/12—Accessories, e.g. stops, grippers
    • B23B13/123—Grippers, pushers or guiding tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/16—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving radially
    • B23B31/16195—Jaws movement actuated by levers moved by a coaxial control rod
    • B23B31/162—Details of the jaws
    • B23B31/16204—Form of the jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/18—Chucks with simultaneously-acting jaws, whether or not also individually adjustable pivotally movable in planes containing the axis of the chuck

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)

Abstract

1,217,072. Bar feeding. ZAVODY PRESNEHO STROJIRENSTVI GOTTWALDOV NARODNI PODNIK. 5 Jan., 1968, [7 Jan., 1967], No. 828/68. Heading B3B. In a method of bar feeding in a machine tool having a reciprocatable tool head, such as a turret, the bar is gripped in a chuck 4 during machining and is subsequently released to permit the feeding of a fresh length of bar into the machining area, means being provided to grip the end of the bar protruding from the chuck and which pulls a predetermined length of the bar through the chuck 4 into the machining area in readiness for the next machining operation. The means N which is mountable on the turret and reciprocatable therewith comprises a body 7 with a mounting stem 8 locatable on the turret 6 and includes jaws 5 actuable via pivoting levers 13 by guide members 14 actuated by a spring 36, by way of an axially movable and tiltable member 35. The clamping action of the jaws on to the workpiece i.e. bar, is initiated by the releasing of spring loaded pawls 22 located within the guide members 14 and which co-operate with an axially slidable stem member 25. In operation the stem 25 is initially urged forward beyond the jaws 5 by a spring 39 in which position the pawl jaws 23 engage a shoulder 24 on the stem and the jaws are urged into their radially innermost position. The forward movement of the turret effects abutting engagement between the end 2511 of the stem 25 and the exposed end of the bar 1, in the chuck, and whereby the stem is urged inwardly of the gripper body until the pawl jaws 23 are disengaged from the shoulder 24 by a tapered edge 29 a fixed sleeve 28 whereat the pressure of the spring 36 immedoately acts via the axially movable and tiltable member 35 and the guide members 14 to urge the jaws 5 into gripping engagement with the bar 1, which is pulled from the chuck 4 as the turret 6 is retracked. When the predetermined length of bar has been pulled through the chuck the latter is actuated to reclamp the bar and the gripping means is subsequentially pulled off the bar end. The stem then resumes its initial forward position ready for the next bar feed movement. The jaws of the gripping means may be rotatable to different positions to accommodate different diameter bars. In the embodiment in Fig. 5 (not shown) the jaws 5 are formed directly on levers 13, and in the further alternative embodiment in Fig. 8 (not shown) the body 7 is rotatable within the stem 8 to permit the device to grip a rotating bar.
GB82868A 1967-01-07 1968-01-05 Method and apparatus for automatic bar feed Expired GB1217072A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS14467 1967-01-07

Publications (1)

Publication Number Publication Date
GB1217072A true GB1217072A (en) 1970-12-23

Family

ID=5333084

Family Applications (1)

Application Number Title Priority Date Filing Date
GB82868A Expired GB1217072A (en) 1967-01-07 1968-01-05 Method and apparatus for automatic bar feed

Country Status (3)

Country Link
AT (1) AT276899B (en)
DE (1) DE1652738A1 (en)
GB (1) GB1217072A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2185699A (en) * 1986-01-20 1987-07-29 Bosgears Limited A bar puller for use on a CNC machine tool and a method of operating a CNC machine tool
CN107877222A (en) * 2017-12-14 2018-04-06 深圳市玮之度科技发展有限公司 A kind of bar clamping assembly and automatic feeding and Digit Control Machine Tool

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3691879A (en) * 1970-06-11 1972-09-19 Warner Swasey Co Machine tool
JPS535485A (en) * 1976-07-05 1978-01-19 Myano Tekkosho Kk Driving mechanism of main shaft fixing type numerical value control automatic machine
DE3327143A1 (en) * 1983-07-27 1985-02-07 Löcher, Helga, 7081 Westhausen Method and device for feeding and positioning bar stock in machining automatics
CN105562748B (en) * 2016-02-03 2017-12-05 西安法士特汽车传动有限公司 A kind of lathe finish fixture of machining high-precision thin-walled parts

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2185699A (en) * 1986-01-20 1987-07-29 Bosgears Limited A bar puller for use on a CNC machine tool and a method of operating a CNC machine tool
CN107877222A (en) * 2017-12-14 2018-04-06 深圳市玮之度科技发展有限公司 A kind of bar clamping assembly and automatic feeding and Digit Control Machine Tool

Also Published As

Publication number Publication date
DE1652738A1 (en) 1971-04-08
AT276899B (en) 1969-12-10

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