FR2908490A1 - Lead screw for machine tool, has conical rollers maintained in pressure on lead screw by chemically locked nuts, where screw has nut whose body includes bores arranged in helix equal to pitch of lead screw - Google Patents

Lead screw for machine tool, has conical rollers maintained in pressure on lead screw by chemically locked nuts, where screw has nut whose body includes bores arranged in helix equal to pitch of lead screw Download PDF

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Publication number
FR2908490A1
FR2908490A1 FR0609851A FR0609851A FR2908490A1 FR 2908490 A1 FR2908490 A1 FR 2908490A1 FR 0609851 A FR0609851 A FR 0609851A FR 0609851 A FR0609851 A FR 0609851A FR 2908490 A1 FR2908490 A1 FR 2908490A1
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FR
France
Prior art keywords
lead screw
conical rollers
screw
vis
nuts
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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.)
Pending
Application number
FR0609851A
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French (fr)
Inventor
Alain Linz
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to FR0609851A priority Critical patent/FR2908490A1/en
Publication of FR2908490A1 publication Critical patent/FR2908490A1/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
    • F16H25/2261—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers arranged substantially perpendicular to the screw shaft axis

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

Abstract

The lead screw (7) has conical rollers (6) maintained in pressure on the lead screw by chemically locked nuts (3), where the screw has screw threads whose bases are disengaged. The rollers are rotated in needle bearings (2, 4), where the screw includes a nut (1) whose body has bores arranged in a helix equal to the pitch of the lead screw. The nuts (3) support the needle bearings (2) on rings through balls (5).

Description

brevet vis-mère 2908490 1/3 La présénte invention concerne une vis-mère,parent patent 2908490 1/3 The present invention relates to a lead screw,

avec écrou équipé de galets coniques. les vis-mères existantes à roulement à billes,à galets cylindriques présentent un glissement en charge 5 ainsi qu'une difficulté d'usinage pour l'écrou. Les machines-outils actuelles (Tours d'outillages avec système de retombée dans le pas)(brevet LINZ)éxigent une révèrsibilité totale de la vis-mère. Dans la présente invention,le rapport entre le 10 dévelopement du haut(10)des filets de la vis-mère(7) et le bas(11)du dévelopement des filets doit être le même que le rapport entre le grand(14)et le petit(13)diamètre des façes d'appuis(8)des galets coniques(5). La vis-mère(7)avec son écrou(1)présentés dans la 15 Figure (1)et(3)plan(l) est d'une révèrsibilité totale même en charge et précontreinte,en réspèctant la formule indiquée ci-dessus. l'écrou présenté peut être usiné avec un outillage classique et équipé d'éléments standard.  with nut equipped with conical rollers. the existing ball-bearing, cylindrical roller lead-heads have a sliding load and a machining difficulty for the nut. The current machine tools (Turns of tools with system of fallout into the pitch) (patent LINZ) require a total reverbibility of the lead screw. In the present invention, the ratio between the development of the top (10) of the threads of the lead screw (7) and the bottom (11) of the development of the threads must be the same as the ratio between the large (14) and the small (13) diameter of the bearing faces (8) of the conical rollers (5). The lead screw (7) with its nut (1) shown in Figure (1) and (3) plane (1) is fully revertible even under load and pre-sintered, with the formula shown above. the nut presented can be machined with conventional tools and equipped with standard elements.

20 La Figure (1)représente une vue en coupe, du corps d'écrou , de ses galets , et de la vis-mère tronquée. La figure(4) est une vue agrandie du système de butée à billes absorbant la pousssée axiale des galets. le corps d'écrou(l)est constitué d'un tube qui 25 comporte 6 alésages(12) usinés sur le diamètre extérieur Page 1 brevet vis-mère 2908490 2/3 du corp d'écrou(1) représenté par une vue en développé du diamètre extèrieur du corps d'écrou(l)Plan(l)Figure(2) et ussinés dans sa circonférence dans deux hélices opposées,corrèspondant à l'hélice du pas de la vis-mère la vis-mére(7)selon l'invention comporte,des dégagements au fond des filets(ll) suffisant pour permêttre le passage(9)des galets coniques(6)a l'opposé de leurs points d'appuis(8). 10 le diamètre extérieur des filets(10)fig.(1) peut avoir une portée cylindrique. Les galets coniques(6)tournent dans des roulements à éguilles(2)et(4),qui absorbent les poussées radiales. Les poussées axiales sont absorbées par des rangées de billes 15 (5)circulant entre, des gorges en forme de V, aménagées dans les galets coniques(6), et la façe d'appui des bagues des roulements à éguilles(2)(figure.4) Les écrous (3),assurés par des freins chimique, assurent le réglage du contact des galets(6)avec la vis-20 mère(7)en appuyant sur les façes d'appui des bagues (2). (fig.4). La fig.(5)(plan2) représente une variante dans laquelle les deux axes(13)sont inclinés de façon à dégager Page 2 brevet vis-mère 2908490 3/3 les galets coniques(6),de la vis-mère(7) du coté opposé (9)à la façe d'appui des galets coniques(8),les hautslO)et les bas(11)des filets de la vis-mère peuvent alors être égaux. La présente invention est destinée à équiper tous mouvements de translation et leur contrôle. Page 3 revendication)Figure (1) is a sectional view of the nut body, its pebbles, and the truncated lead screw. Figure (4) is an enlarged view of the thrust bearing system absorbing the axial thrust of the rollers. the nut body (1) consists of a tube which has 6 bores (12) machined on the outside diameter of the nut (1), which is shown in FIG. developed from the outer diameter of the nut body (1), the plane (1) of which is shown in its circumference in two opposite helices, corresponding to the helix of the pitch of the lead screw and the lead screw (7) according to the invention comprises, clearances at the bottom of the nets (ll) sufficient to allow the passage (9) of the conical rollers (6) opposite their points of support (8). The outer diameter of the threads (10) Fig. (1) can have a cylindrical bearing surface. The conical rollers (6) rotate in needle bearings (2) and (4), which absorb the radial thrusts. Axial thrusts are absorbed by rows of balls 15 (5) flowing between, V-shaped grooves, formed in the conical rollers (6), and the bearing face of the rings of the eel bearings (2) (FIG. .4) The nuts (3), provided by chemical brakes, ensure the adjustment of the contact of the rollers (6) with the master screw (7) by pressing on the bearing faces of the rings (2). (Fig.4). Fig. (5) (plane 2) shows a variant in which the two axes (13) are inclined so as to disengage the tapered rollers (6) from the lead screw (7). ) on the opposite side (9) to the bearing face of the conical rollers (8), the haut10) and the bottom (11) of the threads of the lead screw can then be equal. The present invention is intended to equip all translation movements and their control. Claim)

Claims (7)

Revendicationsclaims 1.Vis-mère avec son écrou caractérisés en ce qu'ils comportent des galets coniques(6) maintenus en pression sur la vis-mère(7) par des écrous freinés chimiquement, permettant un fonctionnement sans frottement, assurant une révèrsibilité parfaite de l'ensemble (écrou vis-mère)(figurelet3) même préchargée.  1.Vis mother with its nut characterized in that they comprise conical rollers (6) held in pressure on the lead screw (7) by chemically braked nuts, allowing a friction-free operation, ensuring a perfect reevibility of the set (screw nut) (figurelet3) even preloaded. 2)Vis-mère selon la revendication(1)caractérisée en ce que les fonds des filetsde la vis-mére(7)plan 10 (1)figure(l) sont largement dégagés.  2) Vis-mother according to claim (1) characterized in that the funds of the threads of the vis-master (7) plane 10 (1) Figure (1) are largely cleared. 3)Vis-mère selon la revendication 1 ou 2 caracterisée en ce que le corps de l'écrou comporte des alésages(12)figure (2),disposés dans une hélice égale au pas de la vis-mère et dans lesquels sont 15 placés les galets coniques(6)avec leurs roulements à éguilles(2et4), écrous de réglages(3),butées à billes (5) figure(4) .  3) Lead screw according to claim 1 or 2 characterized in that the body of the nut comprises bores (12) figure (2), arranged in a helix equal to the pitch of the lead screw and in which are placed 15 the conical rollers (6) with their needle bearings (2 and 4), adjusting nuts (3), thrust bearings (5) (4). 4)Vis-mère selon l'une quelconque des revendications 1 à 3 en ce que les galets coniques (6) 20 sont au nombre de 6 et tournent dans des roulemens Page 1 revendication) 2908490 5 à éguilles (2et4).  4) Lead screw according to any one of claims 1 to 3 in that the conical rollers (6) 20 are 6 in number and turn in rolls Page 1 claim) 2908490 5 eilles (2et4). 5)Vis-mére selon l'une quelconque des revendications précédentes, caractérisée par des écrous(3)qui appuyant sur les bagues des roulements a éguilles(2) 5 par l'intermédiaire de billes(5)circulent dans des gorges en forme de V (figure4) emmenagées sur les galets coniques(6),assurent le réglage du contact(8) des galets coniques(6)avec les filets de la vis-mère.  5) vis-meter according to any one of the preceding claims, characterized by nuts (3) which pressing the rings of the bearings aesuilles (2) 5 via balls (5) circulate in grooves in the form of V (Figure 4) moved on the conical rollers (6), ensure the adjustment of the contact (8) of the conical rollers (6) with the threads of the lead screw. 6)Vis-mère selon l'une des quelconque des reven- dications précédentes la figure(5)Plans(2)représente une variante caractérisée par l'inclinaison des axes 13)ce qui permet de dégagér le passage des galets coniques(6) à l'opposé de leur point d'appuis(9).  6) Vis-mother according to any one of the preceding claims the figure (5) Plans (2) is a variant characterized by the inclination of the axes 13) which allows to clear the passage of the conical rollers (6) opposite to their point of support (9). 7)Vis-mère selon la revendication(6) caractérisée par une vis-mère dont le haut et le bas des filets est caracterisé par les portées cylindriques(10)et(11) qui peuvent être égales. Page 2  7) Lead screw according to claim (6) characterized by a lead screw whose top and bottom of the nets is characterized by the cylindrical bearing surfaces (10) and (11) which may be equal. Page 2
FR0609851A 2006-11-10 2006-11-10 Lead screw for machine tool, has conical rollers maintained in pressure on lead screw by chemically locked nuts, where screw has nut whose body includes bores arranged in helix equal to pitch of lead screw Pending FR2908490A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0609851A FR2908490A1 (en) 2006-11-10 2006-11-10 Lead screw for machine tool, has conical rollers maintained in pressure on lead screw by chemically locked nuts, where screw has nut whose body includes bores arranged in helix equal to pitch of lead screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0609851A FR2908490A1 (en) 2006-11-10 2006-11-10 Lead screw for machine tool, has conical rollers maintained in pressure on lead screw by chemically locked nuts, where screw has nut whose body includes bores arranged in helix equal to pitch of lead screw

Publications (1)

Publication Number Publication Date
FR2908490A1 true FR2908490A1 (en) 2008-05-16

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FR0609851A Pending FR2908490A1 (en) 2006-11-10 2006-11-10 Lead screw for machine tool, has conical rollers maintained in pressure on lead screw by chemically locked nuts, where screw has nut whose body includes bores arranged in helix equal to pitch of lead screw

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011074985A (en) * 2009-09-30 2011-04-14 Hitachi Ltd Linear actuator and vehicular steering device equipped with the same
CN106438898A (en) * 2016-10-14 2017-02-22 黄国峻 Oscillating tooth spiral rotating shaft

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE119095C (en) *
DE1041315B (en) * 1955-03-05 1958-10-16 Walter Obereichholz Worm or screw spindle drive
US4274296A (en) * 1979-03-19 1981-06-23 Raymond W. Born Self-centering self-aligning anti-friction rotor and screw
US4440038A (en) * 1981-10-09 1984-04-03 Iquad Company Incorporated Lead screw and follower assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE119095C (en) *
DE1041315B (en) * 1955-03-05 1958-10-16 Walter Obereichholz Worm or screw spindle drive
US4274296A (en) * 1979-03-19 1981-06-23 Raymond W. Born Self-centering self-aligning anti-friction rotor and screw
US4440038A (en) * 1981-10-09 1984-04-03 Iquad Company Incorporated Lead screw and follower assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011074985A (en) * 2009-09-30 2011-04-14 Hitachi Ltd Linear actuator and vehicular steering device equipped with the same
CN106438898A (en) * 2016-10-14 2017-02-22 黄国峻 Oscillating tooth spiral rotating shaft
CN106438898B (en) * 2016-10-14 2018-12-14 黄国峻 Oscillating tooth screw shaft

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