GB1088082A - A hydraulic feed for controlling linear intermittent motions, particularly in machine tools - Google Patents

A hydraulic feed for controlling linear intermittent motions, particularly in machine tools

Info

Publication number
GB1088082A
GB1088082A GB301465A GB301465A GB1088082A GB 1088082 A GB1088082 A GB 1088082A GB 301465 A GB301465 A GB 301465A GB 301465 A GB301465 A GB 301465A GB 1088082 A GB1088082 A GB 1088082A
Authority
GB
United Kingdom
Prior art keywords
piston
pump
hydraulic
time
valves
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
GB301465A
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.)
Schaeffler Schweiz GmbH
Original Assignee
Hydrel AG
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 Hydrel AG filed Critical Hydrel AG
Publication of GB1088082A publication Critical patent/GB1088082A/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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/26—Fluid-pressure drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
    • B21D43/11—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers for feeding sheet or strip material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G1/00—Thread cutting; Automatic machines specially designed therefor
    • B23G1/16—Thread cutting; Automatic machines specially designed therefor in holes of workpieces by taps
    • B23G1/18—Machines with one working spindle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L25/00—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means
    • F01L25/02—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means
    • F01L25/04—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means by working-fluid of machine or engine, e.g. free-piston machine
    • F01L25/06—Arrangements with main and auxiliary valves, at least one of them being fluid-driven
    • F01L25/063—Arrangements with main and auxiliary valves, at least one of them being fluid-driven the auxiliary valve being actuated by the working motor-piston or piston-rod
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/002—Hydraulic systems to change the pump delivery
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H43/00—Other fluid gearing, e.g. with oscillating input or output

Abstract

1,088,082. Reciprocating machine tool tables. HYDREL A.G. Jan. 22, 1965 [Jan. 22, 1964], No. 3014/65. Heading B3L. An hydraulic drive for reciprocating a table in a machine tool &c. comprises an hydraulic piston-cylinder-motor whose piston K is provided with two piston-rods extending in opposite directions through the ends of the cylinder, a variable delivery reversible pump P delivering working fluid under pressure alternately to the alternately operative working surfaces of the piston by way of an hydraulic reversing device U which is fed by a servopump ZP, there being provided a time mechanism, the time constant of which is adjustable in inverse ratio to the volumetric output of the delivery pump, the time mechanism comprising a timing member ZR 1 adapted to open a valve SV 1 in a feed line between the servopump ZP and the reversing device U, under the control of means Z, R, operable by the hydraulic motor piston or by parts connected therewith to provide a control speed proportional to the speed of the piston. The piston U controls the pump P through a link St and its stroke is determined by cams E 1 , E 2 , set by hand wheels H 1 , (H 2 ). Fluid for operating the piston U is supplied at a constant pressure by a pump ZP driven by the same motor which drives the pump P. When a dog N 1 or N 2 travelling with the piston K trips a rod AF 1 or AF 2 , one of the time delay valves AK 1 , AK 2 is operated to cause fluid from a gear pump HP to move one of two spring-pressed valves SV 1 , SV 2 , to direct fluid from the servo pump ZP to the piston U. The length of stroke of the time-delay valves SV, and thence the duration of the time delay, is determined by cams E 3 , E 4 adjusted simultaneously with the cams E 1 , E 2 . The delivery of the pump HP is rendered proportional to the speed of the piston K by driving it by a rack Z and a pinion R. The gear pump HP may be replaced by a positive displacement pump. In modifications, the trip dogs either operate mechanical devices to move the control valves or move pistons within cylinders.
GB301465A 1964-01-22 1965-01-22 A hydraulic feed for controlling linear intermittent motions, particularly in machine tools Expired GB1088082A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH51464A DE1203563B (en) 1964-01-22 1964-01-22 Hydraulic gear for linear alternating movements

Publications (1)

Publication Number Publication Date
GB1088082A true GB1088082A (en) 1967-10-18

Family

ID=7157704

Family Applications (1)

Application Number Title Priority Date Filing Date
GB301465A Expired GB1088082A (en) 1964-01-22 1965-01-22 A hydraulic feed for controlling linear intermittent motions, particularly in machine tools

Country Status (2)

Country Link
DE (1) DE1203563B (en)
GB (1) GB1088082A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107795449A (en) * 2017-11-28 2018-03-13 西南石油大学 A kind of tooth fan rack-and-pinion reciprocating pump of cam limit
CN110102834A (en) * 2019-06-17 2019-08-09 马单智 A kind of equidistant tapping and punching machine of intermittent rotary outer rim

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1650744B1 (en) * 1968-01-30 1971-12-16 Werkzeugmasch Heckert Veb Hydrostatic transmission for alternating movements

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107795449A (en) * 2017-11-28 2018-03-13 西南石油大学 A kind of tooth fan rack-and-pinion reciprocating pump of cam limit
CN107795449B (en) * 2017-11-28 2024-03-12 西南石油大学 Cam-limited toothed sector rack type reciprocating pump
CN110102834A (en) * 2019-06-17 2019-08-09 马单智 A kind of equidistant tapping and punching machine of intermittent rotary outer rim

Also Published As

Publication number Publication date
DE1203563B (en) 1965-10-21

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