CS264841B1 - Machine tool composite spindle - Google Patents
Machine tool composite spindle Download PDFInfo
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- CS264841B1 CS264841B1 CS500887A CS500887A CS264841B1 CS 264841 B1 CS264841 B1 CS 264841B1 CS 500887 A CS500887 A CS 500887A CS 500887 A CS500887 A CS 500887A CS 264841 B1 CS264841 B1 CS 264841B1
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Abstract
Riešenie sa týká kompozitného vřetena obrábacieho stroja, s cielom zamedzit vznik samobudených kmitov a zvýšit koeficient tlmenia. Podstatou riešenia je, že vřeteno pozostáva z vonkajšieho ocelového valca, v ktorom je uložený vnútorný ocelový válec. Medzi válce je prostredníctvom lepidla na báze polyméru vlepená húževnatá elastická vrstva, například z polyvinylchloridu. Riešenie možno využiť pre sústruhy, frézovačky, vrtačky a vyvrtávačky.The solution concerns a composite spindle of a machine tool, with the aim of preventing the occurrence of self-excited vibrations and increasing the damping coefficient. The essence of the solution is that the spindle consists of an outer steel cylinder, in which an inner steel cylinder is placed. A tough elastic layer, for example made of polyvinyl chloride, is glued between the cylinders using a polymer-based adhesive. The solution can be used for lathes, milling machines, drilling machines and boring machines.
Description
(57) Riešenie sa týká kompozitného vřetena obrábacieho stroja, s cieíom zamedzit vznik samobudených kmitov a zvýšit koeficient tlmenia. Podstatou riešenia je, že vřeteno pozostáva z vonkajšieho ocelového valca, v ktorom je uložený vnútorný ocelový válec. Medzi válce je prostredníctvom lepidla na báze polyméru vlepená húževnatá elastická vrstva, například z polyvinylchloridu. Riešenie možno využiť pre sústruhy, frézovačky, vrtačky a vyvrtávačky. 264 841 B1
OT
264841 2
Vynález sa týká kompozitného vřetena obrébacieho stroja pre sústruhy, frézovačky, vrtačky a vyvrtávačky. V súčasnosti známe vretená obrábacích strojov sú vyrábané z ocele ako monolitně kompozitně vretená zatial nie sú známe. Nedostatkom monolitných vrstiev je ich nízká odolnost proti vzniku samobudených kmitov a nízký koeficient tlmenia.
Uvedený nedostatok dostraňuje kompozitně vřeteno obrábacieho stroja podlá vynálezu, ktorého podstatou je, že pozostáva z vonkajšieho ocelového valca, v ktorom je uložený vnútorný ocelový válec. Medzi vonkajší válec je prostredníctvom dvoch vrstiev lepidla na báze polyméru vlepena húževnatá elastická vrstva, například z polyvinylchloridu. Výhodou kompozitného vřetena podlá vynálezu je, že sa zabezpečí vysoká statická tuhost vřetena a dobré tlmiace vlastnosti. Zvýši sa medzná šířka řezu ako kritéria dynamiokej stability systému uložemia vřetena.
Na priloženom výkrese je zobrazený pozdížny rez kompozitným vretenom podlá vynálezu.
Kompozitně vřeteno podlá vynálezu pozostáva z vonkajšieho ocelového valca 1, v ktorom je uložený vnútorný ocelový válec 2. Medzi vnútornú plochu vonkajšieho valca 1 a vonkajšiu plochu vnútorného valca 2 je vložená húževnatá elastická vrstva 3_, například z polyvinylchloridu, opatřená dvoma stykovými vrstvami 2Ά lepidla na báze polyméru.
Pri činnosti vřetena v procese obrábania je vřeteno vystavené účinkom vonkajších sil, ako sú režná sila, sila tiaže a iné, ktoré majú periodický časový priebech. Odozva systému uloženia vřetena sa za určitých podmienok prejavi v náreste amplitúdy kmitov, ktoré sú nepřípustné z celého radu dósledkov. Húževnato-elastická vrstva 5 plní funkciu sendviča, čiže tlmiča tak torzných ako i prlečných kmitov. Stykové vrstvy 3, £ lepidla obsahujú priečné kmity v dósledku toho, že lepidlo má modul pružnosti v šmiku 30 až 100-krát nižší ako húževnato-elastická vrstva 5, ktorá absorbuje torzné kmity. Táto kompozícia dvoch materiálov, z ktorých jeden má dobré tlmioe vlastnosti a druhý poskytuje vysokú pevnost vřetena, umožňuje dosiahnuť uvedené výhody. Vřeteno podlá vynálezu je možné využit pre všetky druhy obrábacích strojov.
(57) The solution relates to a machine tool composite spindle in order to avoid self-excited oscillations and to increase the damping coefficient. The essence of the solution is that the spindle consists of an outer steel cylinder in which the inner steel cylinder is mounted. A ductile elastic layer, for example polyvinyl chloride, is bonded between the rollers by means of a polymer-based adhesive. The solution can be used for lathes, milling machines, drills and boring machines. 264 841 B1
OT
264841 2
BACKGROUND OF THE INVENTION The present invention relates to a composite spindle for a turning machine for lathes, milling machines, drills and boring machines. Currently known machine tool spindles are made of steel as a monolithically composite spindle, while they are not known. The drawback of monolithic layers is their low resistance to self-excitation and low damping coefficient.
The aforementioned drawback suffers from the composite spindle of the machine tool according to the invention, which consists in that it consists of an outer steel cylinder in which the inner steel cylinder is mounted. A tough elastic layer, for example polyvinyl chloride, is bonded between the outer cylinder by means of two layers of polymer-based adhesive. The advantage of the composite spindle according to the invention is that a high static stiffness of the spindle and good damping properties are ensured. The cut width is increased as a criterion for the dynamic stability of the spindle store system.
BRIEF DESCRIPTION OF THE DRAWINGS FIG.
The composite spindle according to the invention consists of an outer steel cylinder 1 in which an inner steel cylinder 2 is mounted. A ductile elastic layer 3, for example of polyvinyl chloride, is provided between the inner surface of the outer cylinder 1 and the outer surface of the inner cylinder 2, provided with two contact layers 2Ά of adhesive on polymer base.
When the spindle is operating in the machining process, the spindle is subjected to external forces, such as gray silos, gravity forces, and others that have periodic timing. Under certain conditions, the spindle positioning system responds to a vibration amplitude amplitude that is inadmissible from a number of consequences. The resilient-elastic layer 5 functions as a sandwich, that is, a damper of both torsional and transverse oscillations. The adhesive layers 3, 4 comprise transverse oscillations due to the adhesive having a modulus of elasticity of 30 to 100 times lower than the resilient-elastic layer 5 which absorbs the torsional oscillations. This two material composition, one of which has good damping properties and the other provides high spindle strength, allows the above advantages to be achieved. The spindle according to the invention can be used for all types of machine tools.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS500887A CS264841B1 (en) | 1987-07-02 | 1987-07-02 | Machine tool composite spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS500887A CS264841B1 (en) | 1987-07-02 | 1987-07-02 | Machine tool composite spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS264841B1 true CS264841B1 (en) | 1989-09-12 |
Family
ID=5394114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS500887A CS264841B1 (en) | 1987-07-02 | 1987-07-02 | Machine tool composite spindle |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS264841B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ309163B6 (en) * | 2020-11-28 | 2022-03-30 | ŠMT a.s. | Hybrid drilling spindle |
-
1987
- 1987-07-02 CS CS500887A patent/CS264841B1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ309163B6 (en) * | 2020-11-28 | 2022-03-30 | ŠMT a.s. | Hybrid drilling spindle |
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