WO1999065645A1 - Ensemble de cames de commande - Google Patents

Ensemble de cames de commande Download PDF

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Publication number
WO1999065645A1
WO1999065645A1 PCT/DE1999/001713 DE9901713W WO9965645A1 WO 1999065645 A1 WO1999065645 A1 WO 1999065645A1 DE 9901713 W DE9901713 W DE 9901713W WO 9965645 A1 WO9965645 A1 WO 9965645A1
Authority
WO
WIPO (PCT)
Prior art keywords
curve
cam
control
working
control cams
Prior art date
Application number
PCT/DE1999/001713
Other languages
German (de)
English (en)
Inventor
Wolfgang Drees
Original Assignee
Wolfgang Drees
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 Wolfgang Drees filed Critical Wolfgang Drees
Publication of WO1999065645A1 publication Critical patent/WO1999065645A1/fr

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
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/341—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission cam-operated
    • B23Q5/345—Cam assembly
    • 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
    • F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/02—Single-track cams for single-revolution cycles; Camshafts with such cams
    • 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
    • F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/06—Cam-followers

Definitions

  • the invention relates to a Steuererkurvens ⁇ tz according to the preamble of the main claim.
  • Control shafts with control cams have been used for the automation of machine tools since the 19th century.
  • the control cams control the feed movement of the tool either directly or via a connecting mechanism. Directly controlling control cams must be exchanged to change the feed movement; the control cams are adapted to the workpiece. If the gear ratio between cam stroke and feed movement can be changed via the connecting mechanism (e.g. link lever), different feed paths can be realized with the same control cam.
  • cam-controlled machines are equipped with universal cam sets to achieve a high degree of flexibility, which are used to actuate a mechanism with an actuator.
  • the actuation of the adjusting element is intended for small changes in the feed movements, the selection of a different control curve from the universal curve set, however, for larger changes in the feed movements.
  • Both drum and disk curves are used in cam-controlled machines, the disk curves being used with particular preference in areas with high flexibility requirements and small installation space.
  • a feed drive for tool cross-slides on machine tools, in particular multi-spindle automatic lathes, is known, DE 23 39 190 B2, which, however, has the disadvantage that the one-sided mounting of the working roller generates a bending moment on the roller bolt under load.
  • the invention is therefore based on the object of providing a set of control cams with a working curve and a retracting curve, in which no bending moments are generated and in which the working roll and the retracting roll can roll with as little play as possible.
  • the rotary masses must be minimized and the angle of the work cycle simply adjusted.
  • the cam set should be quick to change, easy to center and easy to install.
  • the lifting and retracting curve is designed as a structural unit for a control cam set with a double inner curve for a V- or Y-shaped cam lever and is provided with spur gearing for quick assembly, exact centering and simple fixation, particularly in a machine tool designed as a multi-spindle automatic lathe.
  • a particular advantage of such a control cam set is that it requires that the control cams be properly centered, on both sides Storage of the work roll, a play-free guidance of the feed, low rotary masses of the control shafts with control cams, a quick possible exchange of the control cams as well as easy adjustment of the angle of the control cams to the work flow.
  • the control cam set is arranged and designed in such a way that a quick change is possible in the area of the control cam / cam lever if the control is extremely rigid.
  • the invention is independent of the manner in which the feed movement is transmitted from the cam lever to the workpiece - tool - pairing.
  • connection of two control curves designed as internal curves outside the machine enables the use of spur gearing to fasten both control curves. This makes it possible to quickly change the control cams with just one nut or screw to be loosened.
  • the self-centering spur gear ensures a central arrangement of both the work and the retraction curve. It also includes the potential for angularly turning the work curve to the overall process of the machine. At the same time, by connecting the control cams outside of the machine, it is easy to ensure that the retraction curve is in line with the work curve.
  • both control cams have the center of the spur toothing as the center and during their manufacture, provided that the control cam set consists of one component, or assembly, provided that the finished working curve and the finished retraction curve are assembled into one unit, that they are at an angle to one another such that the retraction curve is the coupling curve the working curve is.
  • the cam headset including the spur toothing is formed in one piece.
  • FIG. 1 is a view of the cam lever and cam set
  • Fig. 2 is a plan view of the subject of Fig. 1 in partial section
  • FIG. 4 is a view of the object of FIG. 3 in partial section
  • FIG. 6 is a view of the subject of FIG. 5 in partial section
  • FIG. 7 is a plan view of a third variant of the prior art
  • FIG. 8 is a view of the object of FIG. 7 in partial section
  • FIG. 10 is a view of the object of FIG. 9 in partial section
  • FIG. 1 1 is a plan view of a fifth variant of the prior art
  • FIG. 12 is a view of the subject of FIG. 1 1 in partial section
  • Fig. 13 is a plan view of a 6th variant of the prior art
  • Fig. 14 is a view of the object of Fig. 13 in partial section.
  • variant 1 a pure working curve 1, hereinafter referred to as variant 1, which is shown in FIGS. 3 and 4, in which the cam lever 5 is retracted by means of a spring force
  • disk cam sets for working stroke and retraction were developed in the 20th century in the following variants 2 to 6 and shown in FIGS. 5 and 14.
  • the work curve 1 and the retraction curve 2 are each shaped so that a work roll 4 can roll through with a little play between the two tracks.
  • the one-sided mounting of the working roller 4 generates a bending moment on the roller bolt under load.
  • the resulting inclination of the working roller 4 to the cam track leads to wear via edge pressures and has a disadvantageous effect on the rigidity of the control.
  • a working roller 4 mounted on both sides enables higher rigidity with the same machine component dimensions.
  • control cams of variants 1, 2 and 3 are attached using axially arranged screws or dowel screws.
  • Corresponding drilling patterns of the control cams and / or cam supports often allow angular displacement of the control cams. This allows the individual feed movement to be shifted in the overall cycle of the machine.
  • the double inner curve with a V- or Y-shaped cam lever is used. n ⁇ nnt and is shown in Figures 9 and 10. These are axially offset working 1 and retraction curves 2 with different roller center points.
  • the working curve 1 can be designed freely, the retraction curve 2 is created by the geometric coupling via a two-armed cam lever 5, hereinafter called the Y cam lever.
  • the retraction roller 3 can be mounted on both sides in addition to the working roller 4.
  • the geometric arrangement allows the rollers 3, 4 to be guided without play.
  • this variant has the advantage of low rotary masses, which is of great importance when changing the control shaft speed, for example when changing between working gear and rapid traverse.
  • Such control curves are usually designed as segments and fastened by tangential screws.
  • the variant 6 shown in Figures 1 3 and 14 shows the possibility of a working roller 4 mounted on both sides in connection with a spur gear centering.
  • the control cams are arranged in two planes, the working curve 1 being centered by face gearing and held by a central nut or screw, the retraction curve 2, however, being fastened with screws.
  • variant 1 A disadvantage of variant 1 is that in many cases it is not precise enough in the retraction behavior due to the lack of positive guidance. It also works the spring force in addition to the feed force on the work roller 4. Together with variants 2 and 3, this solution has the centering problem: only well-centered control cams result in the same end positions of the feed devices after repeated installation and can therefore be used without changing end stops (etc. ) it will be exchanged. This problem can be solved in all 3 variants by high demands on the precision of the assembly, which rules out a quick curve change. For example, after each curve change of variants 2 and 3, you must check whether the work roll is passed with enough play between work curve 1 and retreat curve 2.
  • a particular disadvantage of variant 4 is the fixed angular position of the control cams in the workflow.
  • the tangential fastening of the curve segments does not allow any twisting in relation to the overall process.
  • the exchange of the control curves is also very time-consuming.
  • variant 5 there is a solution that can be exchanged quickly and easily, but which has disadvantages in terms of rigidity like variant 2. It also contains relatively large rotary masses.
  • Variant 6 solves the fastening and centering problem only for the working curve.
  • the separate installation of both control cams leads to the necessity to check the continuity of the work rolls, as with variants 2 and 3.
  • Variant 6 is therefore not to be regarded as quickly replaceable.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne un ensemble de cames de commande comprenant une came de travail et une came à retour, dans lequel aucun couple de flexion n'est produit, et le galet de travail ainsi que le galet de retour peuvent rouler sans jeu. Les masses rotatives de cet ensemble sont minimisées et celui-ci permet un déplacement angulaire simple par rapport au cycle de travail, tout en pouvant être remplacé rapidement, bien centré et bloqué avec une grande facilité de montage. Grâce à cela, la came de travail (1) et la came à retour (2) constituent, sous la forme d'une unité, un ensemble de cames de commande qui est pourvu d'une denture faciale (7).
PCT/DE1999/001713 1998-06-15 1999-06-11 Ensemble de cames de commande WO1999065645A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998126243 DE19826243B4 (de) 1998-06-15 1998-06-15 Steuerkurven für mechanische Steuerungen in Mehrspindeldrehautomaten
DE19826243.4 1998-06-15

Publications (1)

Publication Number Publication Date
WO1999065645A1 true WO1999065645A1 (fr) 1999-12-23

Family

ID=7870712

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/001713 WO1999065645A1 (fr) 1998-06-15 1999-06-11 Ensemble de cames de commande

Country Status (2)

Country Link
DE (1) DE19826243B4 (fr)
WO (1) WO1999065645A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3099393A1 (fr) 2019-08-01 2021-02-05 Psa Automobiles Sa Presse d’emboutissage avec lancement de galet

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2379545A (en) * 1941-03-31 1945-07-03 Davenport Machine Tool Co Inc Cam assembly
CH393035A (fr) * 1963-05-17 1965-05-31 Bergonzo Pierre Tour automatique comportant au moins deux porte-outils radiaux
US3353417A (en) * 1964-10-08 1967-11-21 Hilgeland Fa Geb High speed double blow header
DE2339190A1 (de) * 1973-08-02 1975-02-13 Gildemeister Ag Werkzeugschlittenantrieb fuer werkzeugmaschinen, insbesondere mehrspindeldrehautomaten
DE2741143A1 (de) * 1977-09-13 1979-03-22 Index Werke Kg Hahn & Tessky Anordnung zur befestigung mindestens einer scheibenkurve auf einer traegerwelle
DE3342316A1 (de) * 1983-11-23 1985-05-30 Bayerische Motoren Werke AG, 8000 München Nockenwelle fuer brennkraftmaschinen
DE3439973A1 (de) * 1984-11-02 1986-05-07 Audi AG, 8070 Ingolstadt Verfahren zum herstellen von nockenwellen

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2379545A (en) * 1941-03-31 1945-07-03 Davenport Machine Tool Co Inc Cam assembly
CH393035A (fr) * 1963-05-17 1965-05-31 Bergonzo Pierre Tour automatique comportant au moins deux porte-outils radiaux
US3353417A (en) * 1964-10-08 1967-11-21 Hilgeland Fa Geb High speed double blow header
DE2339190A1 (de) * 1973-08-02 1975-02-13 Gildemeister Ag Werkzeugschlittenantrieb fuer werkzeugmaschinen, insbesondere mehrspindeldrehautomaten
DE2339190B2 (de) 1973-08-02 1978-07-06 Gildemeister Ag, 4800 Bielefeld Vorschubantrieb für Werkzeugquerschlitten an Werkzeugmaschinen, insbesondere an Mehrspindel-Drehautomaten
DE2741143A1 (de) * 1977-09-13 1979-03-22 Index Werke Kg Hahn & Tessky Anordnung zur befestigung mindestens einer scheibenkurve auf einer traegerwelle
DE3342316A1 (de) * 1983-11-23 1985-05-30 Bayerische Motoren Werke AG, 8000 München Nockenwelle fuer brennkraftmaschinen
DE3439973A1 (de) * 1984-11-02 1986-05-07 Audi AG, 8070 Ingolstadt Verfahren zum herstellen von nockenwellen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3099393A1 (fr) 2019-08-01 2021-02-05 Psa Automobiles Sa Presse d’emboutissage avec lancement de galet

Also Published As

Publication number Publication date
DE19826243A1 (de) 1999-12-16
DE19826243B4 (de) 2005-10-13

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