DE946315C - Lead screw lathe for producing threads with variable pitch - Google Patents

Lead screw lathe for producing threads with variable pitch

Info

Publication number
DE946315C
DE946315C DEM23489A DEM0023489A DE946315C DE 946315 C DE946315 C DE 946315C DE M23489 A DEM23489 A DE M23489A DE M0023489 A DEM0023489 A DE M0023489A DE 946315 C DE946315 C DE 946315C
Authority
DE
Germany
Prior art keywords
lead screw
pitch
lathe
variable pitch
continuously variable
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
DEM23489A
Other languages
German (de)
Inventor
Reinhold Bruenn
Dipl-Ing Hans Eickens
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.)
MANNESMANN FA A
Original Assignee
MANNESMANN FA A
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 MANNESMANN FA A filed Critical MANNESMANN FA A
Priority to DEM23489A priority Critical patent/DE946315C/en
Application granted granted Critical
Publication of DE946315C publication Critical patent/DE946315C/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
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/46—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously with variable speed ratio
    • B23Q5/48—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously with variable speed ratio by use of toothed gears
    • 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
    • B23Q2705/20—Gear boxes for thread cutting lathes with a lead screw

Description

Leitspindeldrehbank zur Herstellung von Gewinde veränderlicher Steigung Die zur Erfindung vorgeschlagene Maschine ermöglicht auf einfache Weise die Herstellung von Gewinden veränderlicher Steigung. Es sind Maschinen zum Schneiden von Gewinden mit veränderlicher Steigung bekannt, die die Verwendung eines Schubkurbelgetriebes vorsehen, welche mit Hilfe oder auch ohne Leitspindel den Support entsprechend der zu schneidenden Steigung verschieben. Eine auf diese Weise arbeitende Maschine kann zwar Gewinde mit veränderlicher Steigung erzeugen, die Gesetzmäßigkeit der Steigungsänderung ist jedoch nicht beliebig, sondern an die sinusförmige Gesetzmäßigkeit der Weg-Zeitfunktion des Kurbeltriebes gebunden.Lead screw lathe for the production of threads with variable pitch The machine proposed for the invention enables production in a simple manner variable pitch threads. They are machines for cutting threads with variable pitch known that the use of a slider crank mechanism provide which with the help or without the lead screw the support according to the Move the slope to be cut. A machine working in this way can create threads with a variable pitch, the law of the pitch change is however not arbitrary, but to the sinusoidal law of the path-time function of the crank mechanism bound.

Auf der zur Erfindung vorgeschlagenen Leitspindeldrehbank können im Gegensatz dazu Gewinde geschnitten werden, deren Steigungsveränderlichkeit jeder beliebigen Gesetzmäßigkeit folgen kann.On the lead screw lathe proposed for the invention can in In contrast, threads are cut, the pitch of which is variable each can follow any law.

Bei einer normalen Leitspindeldrehbank besteht zwischen der Drehspindel und der Leitspindel ein feststehendes Übersetzungsverhältnis, das für die Steigung des zu schneidenden Gewindes bestimmend ist. Dies Übersetzungsverhältnis kann normalerweise durch ein Stufengetriebe -verändert werden, bleibt beim Gewindeschneiden während eines Arbeitsprozesses aber konstant und bedingt dadurch ein Gewinde mit einer bestimmten Steigung. Bei einigen Produktionsdrehbänken besteht auch die Möglichkeit, den Vorschub stufenlos. zu verändern. Diese Drehbänke sind jedoch nicht zum Gewindeschneiden vorgesehen.In a normal lead screw lathe there is between the turning spindle and the lead screw has a fixed gear ratio that is used for the pitch of the thread to be cut is decisive. This gear ratio can normally by a multi-step gearbox -changed remains with thread cutting during a Work process but constant and thus requires a thread with a certain Pitch. Some production lathes also have the option of using the feed stepless. to change. However, these lathes are not designed for thread cutting intended.

Bei der zur Erfindung vorgeschlagenen Leitspindeldrehbank wird zwischen der Drehspindel und der Leitspindel ein stufenlos-regelbares Getriebeeingesetzt, dessen Übersetzung entsprechend der Gesetzmäßigkeit der Steigung des herzustellenden Gewindes während des Betriebes verstellbar ist. Soll ein Gewinde mit einer Steigung ganz beliebiger Gesetzmäßigkeit geschnitten werden, dann wird durch eine Steuerung des stufenlosen Getriebes eine der Gesetzmäßigkeit der Gewindesteigung entsprechende Änderung des Drehzahlverhältnisses zwischen Drehspindel und Leitspindel vorgenommen. Die Drehzahl der Drehspindel bleibt konstant; und die Drehzahl der Leitspindel wird bei größer werdender Steigung vergrößert, bei kleiner werdender Steigung verkleinert. Diese Steuerung der Drehzahländerung erfolgt während des Arbeitens entsprechend der zu erzeugenden Gewindesteigung. Sie kann beispielsweise so erfolgen, daß eine von der Drehspindel angetriebene Steuerkurve die Verstellung des. stufenlosen Getriebes durchführt.In the case of the lead screw lathe proposed for the invention, between the turning spindle and the lead screw have an infinitely variable gearbox, its translation according to the law of the slope of the to be produced Thread is adjustable during operation. Should be a thread with a pitch be cut according to any regularity, then it is controlled by a control system of the continuously variable transmission one that corresponds to the regularity of the thread pitch The speed ratio between the rotating spindle and the lead screw has been changed. The speed of the turning spindle remains constant; and the speed of the lead screw becomes enlarged with increasing incline, decreased with decreasing incline. This control of the speed change takes place accordingly during work the thread pitch to be generated. You can for example be done so that a The control cam driven by the rotary spindle adjusts the continuously variable transmission performs.

Claims (4)

PATENTANSPRÜCHE: .i. Leitspindeldrehbank zum Schneiden von ,Gewinden veränderlicher Steigung, dadurch gekennzeichnet, daß zwischen Drehspindel und Leitspindel ein stufenloses Getriebe eingefügt ist, dessen Übersetzung entsprechend der Gesetzmäßigkeit der Steigung des herzustellenden Gewindes während des Betriebes verstellbar ist. PATENT CLAIMS: .i. Lead screw lathe for cutting threads variable pitch, characterized in that between the rotating spindle and the lead screw a continuously variable transmission is inserted, its translation according to the law the pitch of the thread to be produced can be adjusted during operation. 2. -Drehbank nach Anspruch i, dadurch gekennzeichnet, daß .die Verstellung des stufenlosen Getriebes .von der Drehspindel aus erfolgt. 2. Lathe according to claim i, characterized in that .the adjustment of the stepless Gearbox .from the turning spindle. 3. Drehbank nach Anspruch i, dadurch gekennzeichnet, daß die Verstellung des stufenlosen Getriebes von der Leitspindel aus erfolgt. 3. Lathe according to claim i, characterized characterized in that the adjustment of the continuously variable transmission from the lead screw off takes place. 4. Drehbank nach Anspruch i, dadurch gekennzeichnet, daß . die Verstellung des stufenlosen Getriebes durch eine selbständige Steuereinrichtung erfolgt. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 378 093; USA.-Patentschrift Nr. 2 50:2:268; »Werkstatt und Betrieb«, 71 (i938), S. 121, 1z2.4. Lathe according to claim i, characterized in that. the continuously variable transmission is adjusted by an independent control device. Documents considered: German Patent No. 378 093; U.S. Patent No. 2,550: 2: 268; "Werkstatt und Betrieb", 71 (1938), p. 121, 1z2.
DEM23489A 1954-06-20 1954-06-20 Lead screw lathe for producing threads with variable pitch Expired DE946315C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM23489A DE946315C (en) 1954-06-20 1954-06-20 Lead screw lathe for producing threads with variable pitch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM23489A DE946315C (en) 1954-06-20 1954-06-20 Lead screw lathe for producing threads with variable pitch

Publications (1)

Publication Number Publication Date
DE946315C true DE946315C (en) 1956-07-26

Family

ID=7299043

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM23489A Expired DE946315C (en) 1954-06-20 1954-06-20 Lead screw lathe for producing threads with variable pitch

Country Status (1)

Country Link
DE (1) DE946315C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1116020B (en) * 1957-11-16 1961-10-26 Nuernberger Schraubenfabrik Ge Device for the production of threads with variable pitch

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE378093C (en) * 1923-07-04 Theodor Greis Machine for cutting threads with increasing pitch
US2502268A (en) * 1946-04-23 1950-03-28 Tennessee Coal Iron And Railro Apparatus for grooving rolls

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE378093C (en) * 1923-07-04 Theodor Greis Machine for cutting threads with increasing pitch
US2502268A (en) * 1946-04-23 1950-03-28 Tennessee Coal Iron And Railro Apparatus for grooving rolls

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1116020B (en) * 1957-11-16 1961-10-26 Nuernberger Schraubenfabrik Ge Device for the production of threads with variable pitch

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