US2498783A - Automatic lathe - Google Patents

Automatic lathe Download PDF

Info

Publication number
US2498783A
US2498783A US698195A US69819546A US2498783A US 2498783 A US2498783 A US 2498783A US 698195 A US698195 A US 698195A US 69819546 A US69819546 A US 69819546A US 2498783 A US2498783 A US 2498783A
Authority
US
United States
Prior art keywords
rocker
support
cam
automatic lathe
work guide
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
US698195A
Inventor
Bechler Andre
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
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2498783A publication Critical patent/US2498783A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • 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
    • B23Q2705/00—Driving working spindles or feeding members carrying tools or work
    • B23Q2705/10—Feeding members carrying tools or work
    • B23Q2705/18—Feeding other members supporting tools also feeding working spindles supports
    • B23Q2705/182—Feeding other members supporting tools also feeding working spindles supports in lathes
    • 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
    • Y10T82/13—Pattern section
    • Y10T82/135—Cam-controlled cutter

Definitions

  • rocker arms are used to advance and draw the tools working from the sides, the rocking motion of which presents the cutting-tools one after the other to the piece of work.
  • the movements of these parts are also necessary to admit of the tools advancing in their turn to the bar of Work from above.
  • the rocker in question is without exception pivoted to the support for a work guide used in this type of screw-cutting lathe, the height of which, above the bed supported by the frame, is as small as technically possible.
  • the length of the horizontal rocker arm is many times greater than that of the vertical arm, so that if the amplitude of the motion of the latter is to reach a certain limit, the cam lobes on which the follower of the horizontal arm rides have to be made unreasonably big.
  • the object of the present invention is an automatic lathe in which the aforesaid disadvantage is obviated in pivoting the rocker to the frame of the machine and in guiding it along a slideway of the support for the work guide.
  • the slide-way guiding the rocker will be preferably formed by the vertical face of the support for the work guide, and a plate held at an accurately fixed distance from, and parallel to, the support by means of a bolt with lock-nut.
  • Fig. l is an end elevation of the rocker in the lathe
  • Fig. 2 is a sectional view of the same along the line II--II in Fig. 1.
  • a support 2 for the work guide 4 with an eyelet 3 is fixed to the frame I.
  • the bar of work is inserted in an opening of the same diameter in the work guide.
  • the chuck is denoted by 6.
  • the tools can be tightened in the tool-holders 9, II), which can also be adjusted by means of supporting device on the sides ll of a rocker l2.
  • the axle l3 screwed into the frame I forms the pivot of the rocker.
  • a short box l4 fits very accurately on the axle and the rocker I2 is locked on the latter by means of a clamping-collar l5 and a nut IS.
  • the rocker I2 is provided with a slot I! through which the bolt l8 screwed into the support 2 for the work guide passes, holding the plate I! against the screw 2 head [9 in the position shown by the dotted line in Fi 1.
  • the horizontal rocker-arm rides through the medium of a follower 2! on the periphery of a cam 22 driven by the cam-shaft 23 of the machine.
  • this cam turns, its lobes 24, 25, lift the follower 2
  • the distance separating the axis of the pivot and that of the live spindle representing the length of the vertical rocker-arm is but slightly smaller than the distance separating the axle l3 and the point of contact of the follower 2
  • the required amplitude motions of the rocker can be effected by the use of cam-lobes whose radial dimensions will be of the same order as the said amplitude. This proportion would be quite different, for example, if, as in the case of lathes in general use up to the present day, the rocker were pivoted in a position corresponding to the place where the bolt [8 passes through the support for the work guide.
  • a cam comprising lobes, a machine frame, a work guide, a support having a vertical guide-face, mounted on said machine frame and carrying said work guide, a tool-carrying rocker element in engagement with said cam, having a slot and being pivoted to said machine frame at such a distance from said work guide and from the place of engagement of said rocker element with said cam that the amplitude of said rocker element in reach of said work guide is substantially of the same order as the radial dimensions of said lobes, a bolt fixed to said support and traversing said slot substantially in the middle between the pivot point of said rocker element and said work guide, and a plate fixed to said bolt at a distance from said support to guide said rocker element between said plate and said vertical guide face.

Landscapes

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

Description

Feb. 28, A, BECHLER AUTOMATIC LATHE Filed Sept. 20, 1946 INLI Patented Feb. 28, 1950 AUTOMATIC LATHE Andr Bechler, Moutier, Switzerland Application September 20, 1946, Serial No. 698,195 In Switzerland May 3, 1946 1 Claim.
In certain automatic lathes, rocker arms are used to advance and draw the tools working from the sides, the rocking motion of which presents the cutting-tools one after the other to the piece of work. The movements of these parts are also necessary to admit of the tools advancing in their turn to the bar of Work from above.
Up to the present, the rocker in question is without exception pivoted to the support for a work guide used in this type of screw-cutting lathe, the height of which, above the bed supported by the frame, is as small as technically possible. As a result, in this construction the length of the horizontal rocker arm is many times greater than that of the vertical arm, so that if the amplitude of the motion of the latter is to reach a certain limit, the cam lobes on which the follower of the horizontal arm rides have to be made unreasonably big.
The object of the present invention is an automatic lathe in which the aforesaid disadvantage is obviated in pivoting the rocker to the frame of the machine and in guiding it along a slideway of the support for the work guide.
In this way it is possible to reduce the difference of length of the rocker arms considerably and consequently the size of the cam lobes directing them.
The slide-way guiding the rocker will be preferably formed by the vertical face of the support for the work guide, and a plate held at an accurately fixed distance from, and parallel to, the support by means of a bolt with lock-nut.
The drawing shows, by way of example, and in sufficient detail necessary to the understanding of the invention a lathe according to the invention.
Fig. l is an end elevation of the rocker in the lathe, whereas Fig. 2 is a sectional view of the same along the line II--II in Fig. 1.
A support 2 for the work guide 4 with an eyelet 3 is fixed to the frame I. The bar of work is inserted in an opening of the same diameter in the work guide. The chuck is denoted by 6. After correct adjustment, the tools can be tightened in the tool-holders 9, II), which can also be adjusted by means of supporting device on the sides ll of a rocker l2. The axle l3 screwed into the frame I forms the pivot of the rocker. A short box l4 fits very accurately on the axle and the rocker I2 is locked on the latter by means of a clamping-collar l5 and a nut IS. The rocker I2 is provided with a slot I! through which the bolt l8 screwed into the support 2 for the work guide passes, holding the plate I! against the screw 2 head [9 in the position shown by the dotted line in Fi 1.
The horizontal rocker-arm rides through the medium of a follower 2! on the periphery of a cam 22 driven by the cam-shaft 23 of the machine. When this cam turns, its lobes 24, 25, lift the follower 2|, each in its turn, thus making the rocker oscillate about its pivot l3. The distance separating the axis of the pivot and that of the live spindle representing the length of the vertical rocker-arm is but slightly smaller than the distance separating the axle l3 and the point of contact of the follower 2|. In this manner, the required amplitude motions of the rocker can be effected by the use of cam-lobes whose radial dimensions will be of the same order as the said amplitude. This proportion would be quite different, for example, if, as in the case of lathes in general use up to the present day, the rocker were pivoted in a position corresponding to the place where the bolt [8 passes through the support for the work guide.
What I claim is:
In an automatic lathe, a cam comprising lobes, a machine frame, a work guide, a support having a vertical guide-face, mounted on said machine frame and carrying said work guide, a tool-carrying rocker element in engagement with said cam, having a slot and being pivoted to said machine frame at such a distance from said work guide and from the place of engagement of said rocker element with said cam that the amplitude of said rocker element in reach of said work guide is substantially of the same order as the radial dimensions of said lobes, a bolt fixed to said support and traversing said slot substantially in the middle between the pivot point of said rocker element and said work guide, and a plate fixed to said bolt at a distance from said support to guide said rocker element between said plate and said vertical guide face.
ANDRE BE'CHLER.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 2,151,379 Flaker Mar. 21, 1939 2,319,963 Wilson May 25, 1943 FOREIGN PATENTS Number Country Date 120,571 Switzerland Sept. 13, 1926
US698195A 1946-05-03 1946-09-20 Automatic lathe Expired - Lifetime US2498783A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2498783X 1946-05-03

Publications (1)

Publication Number Publication Date
US2498783A true US2498783A (en) 1950-02-28

Family

ID=4569670

Family Applications (1)

Application Number Title Priority Date Filing Date
US698195A Expired - Lifetime US2498783A (en) 1946-05-03 1946-09-20 Automatic lathe

Country Status (1)

Country Link
US (1) US2498783A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688612A (en) * 1970-04-10 1972-09-05 Citizen Watch Co Ltd Machine tool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH120571A (en) * 1926-09-13 1927-06-01 Rosse & Affolter Fabrique L Es Bar turning machine.
US2151379A (en) * 1938-08-16 1939-03-21 Jacob E Flaker Tool holder
US2319963A (en) * 1942-06-29 1943-05-25 City Engineering Company Manufally operated screw machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH120571A (en) * 1926-09-13 1927-06-01 Rosse & Affolter Fabrique L Es Bar turning machine.
US2151379A (en) * 1938-08-16 1939-03-21 Jacob E Flaker Tool holder
US2319963A (en) * 1942-06-29 1943-05-25 City Engineering Company Manufally operated screw machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688612A (en) * 1970-04-10 1972-09-05 Citizen Watch Co Ltd Machine tool

Similar Documents

Publication Publication Date Title
US2498783A (en) Automatic lathe
US2377519A (en) Toolholder
GB1107214A (en) Improvements in and relating to grinding machines
GB1286448A (en) Machine tools
US1970216A (en) Screw slotting device
US2673388A (en) Means for preventing draw back marks
SU552150A1 (en) Device for processing parts such as rotation bodies
US378747A (en) William wattie
US2528330A (en) Conveyer for screws to be slitted in automatic lathes
US2487243A (en) Machine tool
SU874288A2 (en) Chamfering device
US3106727A (en) Thread cutting lathe with deburring cutter actuated at start and end of threading operation
US2817992A (en) Radius turning mechanism
US649906A (en) Automatic lathe attachment.
SU147874A1 (en) Adaptation to metal-cutting machines for machining spherical surfaces
SU113471A1 (en) Method of threading external threads on lathes, etc. machine tools
GB870837A (en) Improvements in or relating to screw thread cutting machines
US3307439A (en) Copying attachment for a machine tool such as a lathe, a drilling machine or the like
US1544685A (en) Apparatus for producing edged work
GB1086605A (en) Tool holder for a machine tool
US2345686A (en) Screw and similar machine
US1516168A (en) Stock-measuring and cutting-off machine
US904579A (en) Tool-holder.
US2368011A (en) Device for relieving cutters
SU100116A1 (en) Universal fixture for screw-cutting lathes for multi-pass external threading