EP1884315B1 - Outil, dispositif et procédé pour la production d'une pièce à usiner, notamment d'une broche filetée à billes - Google Patents

Outil, dispositif et procédé pour la production d'une pièce à usiner, notamment d'une broche filetée à billes Download PDF

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Publication number
EP1884315B1
EP1884315B1 EP20060016179 EP06016179A EP1884315B1 EP 1884315 B1 EP1884315 B1 EP 1884315B1 EP 20060016179 EP20060016179 EP 20060016179 EP 06016179 A EP06016179 A EP 06016179A EP 1884315 B1 EP1884315 B1 EP 1884315B1
Authority
EP
European Patent Office
Prior art keywords
tool
axis
work piece
workpiece
contact element
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 - Fee Related
Application number
EP20060016179
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German (de)
English (en)
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EP1884315A1 (fr
Inventor
Oliver Hildebrandt
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.)
Supfina Grieshaber GmbH and Co KG
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Supfina Grieshaber GmbH and Co KG
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 Supfina Grieshaber GmbH and Co KG filed Critical Supfina Grieshaber GmbH and Co KG
Priority to EP20060016179 priority Critical patent/EP1884315B1/fr
Priority to DE200650008334 priority patent/DE502006008334D1/de
Publication of EP1884315A1 publication Critical patent/EP1884315A1/fr
Application granted granted Critical
Publication of EP1884315B1 publication Critical patent/EP1884315B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/02—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements
    • B24B19/022—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements for helicoidal grooves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/003—Other grinding machines or devices using a tool turning around the work-piece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces

Definitions

  • the invention relates to a device having the features of the preamble of patent claim 1.
  • Finish tools for finish machining of workpiece surfaces are for example from DE 198 04 885 A1 as well as from the EP 1 506 839 B1 known. Finish tools are used to reduce the roughness of ground workpiece surfaces.
  • the layer thickness of the removed material is usually only a few microns.
  • finishing bricks and finishing stones with a curved effective surface are used.
  • brushing or polishing tools can also be used.
  • the object of the present invention is to provide a device with which very complex geometries can be produced at high material removal rates.
  • the device according to the invention has a tool drive with which the tool can be driven to rotate about a tool axis. Although it can be significantly increased with respect to non-annular tools with a non-rotating tool, the material removal rate when rotated at a fixed tool, only the workpiece; However, by the rotating drive of the tool, a further increase in material removal performance can be effected.
  • the rotating drive of the tool also has the advantage that the active material along its annular active surface can wear evenly.
  • the device has an oscillating drive with which the tool can be driven to oscillate about an oscillation axis, so that the tool reciprocates about an oscillation angle about the oscillation axis.
  • oscillation axis is arranged perpendicular to the above tilt axis.
  • the annular active surface of the tool can conform to a curved workpiece surface.
  • geometric unevennesses for example, "chatter marks" produced during a grinding process
  • which have arisen during an upstream rough machining of the workpiece can be removed particularly well and quickly.
  • the superfinishing can be completed in one pass, so that time-consuming and expensive tool changes omitted. Since the active material is annular and can wear away radially outward, a large volume of wear is available. As a result, caused by wear tool change intervals are increased, downtime avoided and increases the efficiency.
  • the effective surface is circular.
  • the rotational position of the tool and / or the workpiece at a given distance of the respective axes of rotation has no influence on the material removal process.
  • the profile of the active surface is mirror-symmetrical. In this way, the material removal process is independent of the direction in which the tool and the workpiece move along their axes of rotation relative to each other.
  • the profile of the active surface is arcuate, in particular, the active surface is convex radially inwardly formed.
  • This profile allows on the one hand a gentle engagement of the tool in a machined surface of the workpiece.
  • a ball running surface can be produced with such a radially inwardly convex shaped active surface.
  • Such a ball raceway can for example form a bearing surface of a ball bearing.
  • An example of such a workpiece is a ball screw, in particular the ball screw of a steering gear for motor vehicles.
  • the profile of the active surface can be exactly predetermined in the context of the work preparation, so that the tool can be used immediately and the profile of the effective surface does not have to first adapt to surfaces with pre-machined geometries.
  • the tool can be completely formed from the active material, so that it has a particularly simple structure.
  • the active material can also be arranged on an annular holding body. This facilitates the handling of the tool.
  • the active material and the holding body can be permanently connected to each other, so that a solid bond between the parts arises.
  • the active material and the holding body can also be releasably connected to each other, wherein means for fixing the active material are provided on the holding body. In this way, the active material can be exchanged after exceeding a wear limit and the holding body can be reused for new active material.
  • the tool drive may comprise a motor and a belt drive, which sets the holder for the tool in rotation.
  • a motor With the motor, a holder of the device in which the tool is received, are driven.
  • the belt drive it is possible to decouple the engine and the bracket or the tool spatially from each other.
  • the belt drive weight can be saved, which is particularly advantageous if the tool is also driven to oscillate perpendicular to its tool axis, as will be described below.
  • other motion transmission means may be used to set the tool in rotation.
  • the device has a workpiece drive, with which the workpiece to be machined is rotatably driven about a workpiece axis.
  • the superposition of the rotation of the workpiece and the tool results in particularly high material removal rates.
  • the angle of inclination of the tool is adjustable about a tilt axis arranged perpendicular to the workpiece axis. This is particularly advantageous when a pre-ground ball raceway, which has a pitch angle to be fine machined. Due to the adjustment of the inclination of the tool, its effective area can cling particularly well to such a thread-like running ball raceway.
  • a feed drive is provided, with which the distance of the effective surface of the tool to the workpiece surface to be machined is adjustable. With the help of the Zustellantriebs so the Zustellnes by which the finishing tool engages the workpiece surface can be adjusted.
  • the feed drive it is also possible to compensate for wear of the finishing tool, which can be readjusted by an amount corresponding to the wear on the workpiece.
  • the feed drive can be designed pneumatically, hydraulically or electrically. With the feed drive, the effective area of the tool can be pressed against the workpiece with a constant contact force. If the Zustellantrieb seen in the feed direction is movable, the effective area can move along accordingly. As a result, a high concentricity error tolerance of the workpiece is made possible.
  • the oscillation angle starting from a central position to a value between ⁇ 25 ° and ⁇ 5 °, in particular between ⁇ 20 ° and ⁇ 10 °, more particularly at least approximately to ⁇ 15 ° is adjustable.
  • the oscillation angle in particular the geometry of the outer regions of a ball raceway can be influenced.
  • An additional development of the invention provides that the distance of the oscillation axis to the workpiece axis is adjustable. This makes it possible to adjust the oscillation axis so that the tool oscillates directly adjacent to its working surface engaging with the workpiece.
  • the distance between the base of the ball raceway and the axis of oscillation advantageously corresponds to the radius of a ball intended for the ball raceway.
  • drive means are provided with which the device can be moved along a travel path parallel to the workpiece axis. In this way, it is possible to move the device along with the tool along a rotationally driven workpiece, so that thread-like running ball treads can be generated. But it is also possible that the device is stationary and the workpiece is moved along its workpiece axis. This relative movement can also be created by a combination of the mentioned possibilities.
  • the holder for the tool is mounted with play parallel to the travel path. In this way, tolerances can be compensated along a travel path oriented parallel to the workpiece axis, so that the transverse force load of the tool is minimized.
  • the device has a guide device connected at least indirectly to the holder and / or the tool, which is in contact with the workpiece via an additional contact element. With the help of the contact element occurring transverse forces are absorbed, so that the tool is loaded in the region of its effective surface substantially only radially outward pressure.
  • the guide device and the tool can be directly connected to each other, but it is also possible to produce the flow of force between the contact element of the guide device and the tool via interconnected components.
  • the process reliability can be further increased because the tool is relieved of lateral forces.
  • axial position errors can be compensated, which can result from errors or tolerances in the positioning of the tool and / or by workpiece tolerances or errors.
  • transverse forces resulting from accelerations can be absorbed by the contact element of the guide device, whereby the tool is relieved.
  • the distance between the contact element and the tool in to the tool axis adjustable in parallel direction. This makes it possible to adjust the distance between the contact element and the tool so that a ball screw can be edited with a predetermined thread pitch.
  • the contact element is cylindrical, spherical or barrel-shaped.
  • Such a contact element can be inserted into a already finely machined or still to be processed ball tread.
  • an appropriate diameter it is possible to provide not only one, but two contact points with the ball surface of a substantially cylindrical workpiece, so that lateral forces can be absorbed at two points of contact.
  • Particularly high loads can be absorbed by the contact element, if this has diamond particles and in particular of a polycrystalline diamond material (PCD) is formed.
  • PCD polycrystalline diamond material
  • This material is heavy-duty and wear-resistant.
  • the use of hard metals, hard plastics or ceramic materials is possible.
  • a feed drive is provided, with which the contact element in the direction of the workpiece and opposite is movable.
  • the feed drive is coupled to a displacement measuring system. The position measuring system reliably provides a parameter for the beginning and the End of fine machining. If the contact element is delivered radially inward and in contact with a pre-machined ball tread, the microfinishing can be started.
  • the superfinishing can either be terminated immediately or, finally, those threads can be machined which are located between the contact element already displaced radially outwards and the active surface of the tool.
  • the displacement measuring system it is not only possible to detect that the contact element is in contact with a ball race or with an external thread of the workpiece, but it also allows recognition of the rotational position of the workpiece, if the position of the contact element along the tool axis is known , This position can also be derived when the position of the tool and the distance of the contact element to the tool is known.
  • the invention further relates to a method for producing a workpiece designed in particular as a ball screw spindle using a device according to the invention. It is proposed that the tool is driven to rotate in a rotating and oscillating manner.
  • the device If the device is moved along a travel path parallel to the workpiece axis, can also be thread-like running ball treads are processed.
  • the travel is adjusted so that it corresponds to the pitch of the thread when the workpiece rotates once, so once rotated 360 °.
  • the inclination angle is defined to be 0 ° when the finish tool axis and the workpiece axis are parallel to each other.
  • the angle of inclination is set so that it is at most as large as and in particular smaller than a pitch angle of the ball raceway of the workpiece, in particular the ball screw.
  • the inclination angle may also be set to be greater than the pitch angle of the ball raceway of the workpiece, in particular the ball screw.
  • the contact element of the guide device is brought into contact with the ball running surface of the workpiece to be finished already before the superfinishing of the workpiece, and then remains there during machining.
  • FIG. 1 an assembly unit is shown, which is designated overall by the reference numeral 2. Furthermore, a workpiece 4 designed as a ball screw spindle is shown, which has a ball running surface 6.
  • annular tool 8 For machining the ball running surface 6, an annular tool 8 is provided, which is referred to below as a finishing tool. This has a radially inwardly facing, in profile arcuate effective surface 10. The profile of the active surface 10 is at least partially adapted to the profile of the ball raceway 6.
  • the finishing tool 8 is held on a holding body 12, which surrounds the finishing tool 8 radially outward and supports one side of the finishing tool 8 in the axial direction.
  • the finishing tool 8 is fixed to the holding body 12 via a clamping ring 14 and by means of screws 16.
  • the finishing tool 8 or the holding body 12 is fixed to a holder 18 by means of screws not shown.
  • the holder 18 is formed on a substantially rotationally symmetrical bearing body 20, in the center of a free space 22 is formed for receiving a portion of the workpiece 4.
  • the bearing body 20 is also in FIG. 2 Rolling bearing 24 shown rotatably mounted on a housing 26. With this housing, a protruding from this flange 28 is connected, where a motor 30 is attached.
  • the motor 30 has a drive surface 32 to drive a belt, not shown, which acts on an output surface 34 of the bearing body 20, so that by means of the motor 30 and the belt drive the bearing body 20 and thus the finishing tool 8 can be rotationally driven. In this case, the finishing tool 8 rotates about a finishing tool axis 36.
  • the workpiece 4 can be rotationally driven by means of a workpiece drive, not shown, so that it rotates about a workpiece axis 38.
  • a workpiece drive not shown
  • an angle of inclination 40 is formed which is 0 ° for rotationally symmetrical ball bearing surfaces.
  • a pitch angle 42 Indicates the ball tread 6, as well as in FIG. 1 shown, a pitch angle 42, the inclination angle 40 can be increased accordingly.
  • a device according to the invention is designated overall by the reference numeral 44. This has the reference to FIG. 1 described assembly unit 2.
  • This in FIG. 1 upper end of the housing 26 is according to Figures 2 and 3 firmly connected to a bearing plate 46.
  • the bearing plate 46 is displaceably mounted along a linear guide 48.
  • the linear guide 48 has two symmetrically arranged bearing elements 50, which are fixedly connected to the bearing plate 46.
  • the bearing elements 50 cooperate with respective outer bearing elements 52, which are fixedly connected to a carrier element 54.
  • this Carrier element 54 ends connected to plates 56, wherein at the in FIG. 3 front plate 56, a feed drive 58 is arranged.
  • This drive is, for example, electromechanical, pneumatic or hydraulic and drives a piston rod 60 at.
  • the bearing plate 46 can be moved relative to the carrier element 54, so that the active surface 10 of the finishing tool 8 can be moved in the direction of the surface to be machined of the workpiece 4 and moved in opposite directions.
  • the feed drive exerts a constant force. In this case, the feed drive allows a movement of the active surface in the radial direction to the workpiece 4, so that concentricity error of the workpiece 4 can be compensated.
  • the unit described so far has a further degree of freedom and can be pivoted about an axis of oscillation designated by reference numeral 62. Starting from a in FIG. 3 64 designated center position, the unit described so far, and in particular the finishing tool 8 can be reciprocated by an oscillation angle 66.
  • FIG. 2 To generate the oscillating movement of the finishing tool 8 is an in FIG. 2 provided with 68 designated oscillation drive. This generates a rotational movement, which is transmitted to a first end of a relative to the axis of rotation eccentric mounted connecting rod 70.
  • the opposite end of the connecting rod 70 is in FIG. 3 shown cut. In this Area the connecting rod 70 engages around a bolt 72 shown only in sections, which is mounted in a pin receptacle 74.
  • About the connecting rod 70 of the pin 72 and the pin receptacle 74 is pivoted about the axis of oscillation 62.
  • the bolt receptacle 74 To transfer this movement to the finishing tool 8, the bolt receptacle 74 is fixedly connected to the carrier element 54.
  • the carrier element 54 in turn is connected to a shaft element 76 defining the oscillation axis 62.
  • the shaft member 76 is mounted on a bearing 78 in the axial and radial directions.
  • a sealing ring 80 is provided to seal the bearing 78.
  • a clamping ring 82 is provided in order to bias the bearing 78 in the axial direction.
  • the bearing 78 is arranged in a designated axle bearing 84.
  • the axle receptacle 84 is relative to a plate member 86 by means of an in FIG. 2 slidably mounted with 88 designated linear guide.
  • 88 designated linear guide.
  • FIG. 2 In order to fix the axle receptacle 84 and the plate element 86 relative to one another, are in FIG. 2 provided with 90 designated clamping screws.
  • the plate member 86 is fixedly connected to a rear plate 92 which can be rotated about a tilt axis 94 (see FIG. 3 ).
  • the previously described unit can be adjusted by the angle of inclination 40, around which thread-like extending ball tread 6 of the workpiece 4 to edit.
  • the inclination axis 94 is defined by a bearing pin 98. This is held in an intermediate piece 100 which rests with its front side (without reference numeral) on the back (without reference numeral) of the rear plate 92. On the other side of the rear plate 92, a clamping plate 102 is arranged, which is bolted to the bearing pin 98. By loosening the screw, the distance between the intermediate piece 100 and the clamping plate 102 can be increased, so that the rear plate 92 can be rotated about the inclination axis 94.
  • the device 44 has a carriage designated overall by the reference numeral 104. This carriage is movable by means of drive means not shown along a travel path 106 which runs parallel to the workpiece axis 38.
  • the carriage 104 has a bottom plate 108, a rear support plate 110 and a support plate 112.
  • the intermediate piece 100 and the carrier plate are mounted parallel to the direction of the workpiece axis 38 by means of a linear guide 114 to each other displaceable.
  • a relative movement between the carriage 104 and the intermediate piece 100 can be achieved via a path measuring unit 115 (cf. FIG. 3 ).
  • an adjusting screw 118 is provided. This is mounted on a bearing shell 120 which is fixedly connected to the intermediate piece 100.
  • the adjusting screw 118 engages in a pivot pin 122, which in turn is rotatably mounted in a receptacle 124, which in turn is connected to the rear plate 92.
  • the screw connection between the clamping plate 102 and the bearing pin 98 must first be loosened, so that the rear plate 92 is movable. Subsequently, the adjusting screw 118 is rotated until a desired angle of inclination 40 is reached.
  • a measure of the inclination angle 40 is also indicated by the in FIG. 3 Defined by the reference numeral 126 distance between the free end of the pivot pin 122 and the pivot pin 122 facing surface of the bearing shell 120 defined.
  • the finishing tool 8 is mounted in a play-related manner in a direction parallel to the travel path 106. In this way, tolerances of the ball tread 6 to be processed can be compensated so that the lateral force load of the finishing tool 8 is minimized.
  • the path measuring unit 115 it can be detected whether the relative movement between the carriage 104 and the intermediate piece 100 is such that it does not match the feed of the carriage, which is predetermined by the pitch of the ball running surface per single revolution of the workpiece 4. In this way it can also be detected that the workpiece 4 is not rotating.
  • the device 44 has an in FIG. 4 overall with the reference numeral 128 designated guide means.
  • This comprises an arm 130 which is supported on the plate element 86. Via a linear guide 132, the arm 130 is parallel to the one in FIG FIG. 1 shown finish tool axis 36 slidably mounted. By means of fastening screws 134, the arm 130 can be fixed to the plate element 86.
  • a feed drive 136 is arranged, which in FIG. 5 is shown cut.
  • This comprises two double-acting piston 138, which are connected at its free end to a holder 140.
  • a cylindrical contact element 142 is arranged, which is perpendicular to the in FIG. 1 illustrated finish tool axis 36 extends.
  • the Contact element 142 is formed from a polycrystalline diamond and thus particularly hard and wear resistant. The contact element 142 engages in a turn of the ball raceway 6.
  • the holder 140 is over an angularly protruding portion 144 with an in FIG. 4 coupled path measuring system 146, so that the position of the holder 140 and the contact element 142 relative to the arm 130 can be detected.
  • a workpiece 4 designed in particular as a ball screw spindle can be finish-machined so that the ball running surface 6 of the workpiece 4 reaches the highest surface qualities.
  • very short processing times can be achieved. This is because the active surface 10 of the finishing tool 8 is annular and in particular can be rotationally driven. Also, the workpiece 4 can be driven by rotation. The carriage 104 is driven along the travel path 106 so that the finishing tool 8 remains in engagement with the ball race surface upon rotation of the workpiece 4. In this case, the finishing tool 8 is not transversely loaded due to the contact element 142.
  • the device 44 makes it possible to process workpieces 4 quickly and reliably. During series production, only the tool 8 and the contact element 142 must be replaced after reaching the wear limits.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (24)

  1. Dispositif d'usinage fin de type finition, brossage et/ou polissage de surfaces d'une pièce d'oeuvre (4), avec un porte-outil (18) supportant un outil (8) doté d'une matière active de finition, de brossage et/ou de polissage et présentant au moins sur une partie une surface active incurvée (10), ladite surface active (10) étant annulaire et orientée radialement vers l'intérieur et l'outil (8) pouvant être entraîné en rotation autour d'un axe d'outil (36) au moyen d'un dispositif d'entraînement d'outil, caractérisé en ce que le dispositif (44) comprend un dispositif d'entraînement oscillant (68) permettant de faire osciller l'outil (8) autour d'un axe d'oscillation (62), de sorte que l'outil (8) oscille de part et d'autre de l'axe d'oscillation (62) selon un angle d'oscillation (66).
  2. Dispositif selon la revendication 1, caractérisé en ce que l'outil (8) peut être entraîné en oscillation autour de l'axe d'outil (36).
  3. Dispositif selon la revendication 1 ou la revendication 2, caractérisé en ce que le dispositif d'entraînement de l'outil comprend un moteur (30) et une transmission par courroie qui entraîne en rotation le porte-outil (18) supportant l'outil (8).
  4. Dispositif selon l'une des revendications précédentes, caractérisé par un dispositif d'entraînement de pièce d'oeuvre permettant d'entraîner en rotation la pièce d'oeuvre (4) à usiner autour d'un axe de pièce d'oeuvre (38).
  5. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'angle d'inclinaison (40) de l'outil (8) par rapport à un axe d'inclinaison (94) perpendiculaire à l'axe de pièce d'oeuvre (38) est réglable.
  6. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu un dispositif de positionnement (58), permettant de régler la distance entre la surface active (10) de l'outil (8) et la surface à usiner de la pièce d'oeuvre (4).
  7. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'axe d'oscillation (62) est perpendiculaire à l'axe d'inclinaison (94).
  8. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'angle d'oscillation (66) par rapport à une position médiane (64) peut être réglé à une valeur comprise entre ±25° et ±5°; notamment entre ±20° et ±10°, en particulier supérieure ou égale à environ ±15°.
  9. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la distance entre l'axe d'oscillation (62) et l'axe de pièce d'oeuvre (38) est réglable.
  10. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu des dispositifs d'entraînement permettant de déplacer le dispositif (44) le long d'une course d'usinage (106) parallèle à l'axe de pièce d'oeuvre (38).
  11. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le porte-outil (18) supportant l'outil (8) est monté avec jeu parallèlement à la course d'usinage (106).
  12. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le dispositif (44) comporte un dispositif de guidage (128) qui est relié au moins indirectement au porte-outil (18) et/ou à l'outil (8) et qui est en contact avec la pièce d'oeuvre (4) par le biais d'un élément de contact supplémentaire (142).
  13. Dispositif selon la revendication 12, caractérisé en ce que la distance entre l'élément de contact (142) et l'outil (8) parallèlement à l'axe d'outil (36) est réglable.
  14. Dispositif selon la revendication 12 ou la revendication 13, caractérisé en ce que l'élément de contact (142) affecte la forme d'un cylindre, d'une sphère ou d'un tonneau.
  15. Dispositif selon l'une des revendications 12 à 14, caractérisé en ce que l'élément de contact (142) comporte des particules de diamant.
  16. Dispositif selon l'une des revendications 12 à 15, caractérisé en ce que l'élément de contact (142) est en diamant polycristallin (PCD).
  17. Dispositif selon l'une des revendications 12 à 15, caractérisé en ce que l'élément de contact (142) est formé au moins en partie de métal dur, de plastique dur et/ou de céramique.
  18. Dispositif selon l'une des revendications 12 à 17, caractérisé en ce qu'il est prévu un dispositif de positionnement (136) permettant de déplacer l'élément de contact (142) en direction de la pièce d'oeuvre (4) et en sens contraire.
  19. Dispositif selon la revendication 18, caractérisé en ce que le dispositif de positionnement (136) est couplé à un système de mesure de déplacement (146).
  20. Procédé de fabrication d'une pièce d'oeuvre (4) affectant notamment la forme d'une vis à billes, mettant en oeuvre un dispositif (44) présentant les caractéristiques selon l'une quelconque des revendications précédentes, l'outil (8) étant entraîné en rotation autour d'un axe de pièce d'oeuvre (38) et entraîné en oscillation autour d'un axe d'oscillation (62).
  21. Procédé selon la revendication 20, caractérisé en ce que le dispositif (44) est déplacé le long d'une course d'usinage (106) parallèlement à l'axe de pièce d'oeuvre (38).
  22. Procédé selon la revendication 21, caractérisé en ce que le dispositif (44) est déplacé, le long de la course d'usinage (106), sur la distance prédéterminée par le pas d'une surface de roulement à billes (6) de la pièce d'oeuvre (4) à mesure que la pièce d'oeuvre effectue une rotation sur 360°.
  23. Procédé selon l'une des revendications 20 à 22, caractérisé en ce qu'un angle d'oscillation (66) par rapport à une position médiane (64) est réglé à une valeur comprise entre ±25° et ±5°; notamment entre ±20° et ±10°, en particulier supérieure ou égale à environ ±15°.
  24. Procédé selon l'une des revendications 20 à 23, caractérisé en ce que l'outil (8) produit une surface de roulement à billes (6) adaptée à un corps sphérique de diamètre déterminé et en ce que la position de l'axe d'oscillation (62) est réglée de manière à passer par le centre de ce corps sphérique lorsque ledit corps sphérique est positionné dans la surface de roulement à billes (6).
EP20060016179 2006-08-03 2006-08-03 Outil, dispositif et procédé pour la production d'une pièce à usiner, notamment d'une broche filetée à billes Expired - Fee Related EP1884315B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20060016179 EP1884315B1 (fr) 2006-08-03 2006-08-03 Outil, dispositif et procédé pour la production d'une pièce à usiner, notamment d'une broche filetée à billes
DE200650008334 DE502006008334D1 (de) 2006-08-03 2006-08-03 Werkzeug, Vorrichtung und Verfahren zur Herstellung eines insbesondere als Kugelrollspindel ausgebildeten Werkstücks

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EP20060016179 EP1884315B1 (fr) 2006-08-03 2006-08-03 Outil, dispositif et procédé pour la production d'une pièce à usiner, notamment d'une broche filetée à billes

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EP1884315A1 EP1884315A1 (fr) 2008-02-06
EP1884315B1 true EP1884315B1 (fr) 2010-11-17

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Publication number Priority date Publication date Assignee Title
US8647175B2 (en) 2010-05-18 2014-02-11 Thielenhaus Technologies Gmbh Method and apparatus for finish machining ball tracks in a nut of a ball drive

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DE502006006179D1 (de) 2006-08-03 2010-04-01 Supfina Grieshaber Gmbh & Co Führungseinrichtung für ein Werkzeug, insbesondere für ein Finishwerkzeug
CN107344320B (zh) * 2017-08-31 2023-05-09 台州市冠丰自动化设备有限公司 汽车方向盘转向蜗杆齿面抛光机

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DE669530C (de) * 1936-10-06 1938-12-28 Franz Foerg Schleifen von Gewinde
DE709306C (de) * 1937-07-29 1941-08-13 Franz Foerg Schleifen von Gewinden
DE1752992B2 (de) * 1968-08-17 1974-02-07 Maschinenfabrik Ernst Thielenhaus, 5600 Wuppertal Vorrichtung zum Schleifen der Kugelrillen von runden Werkstücken
DE3802792A1 (de) 1988-01-30 1989-08-17 Studer Ag Fritz Vorrichtung zum rund- und/oder profilschleifen
JP2881855B2 (ja) * 1989-11-07 1999-04-12 日本精工株式会社 ゴシック・アーク溝の超仕上方法
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8647175B2 (en) 2010-05-18 2014-02-11 Thielenhaus Technologies Gmbh Method and apparatus for finish machining ball tracks in a nut of a ball drive

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EP1884315A1 (fr) 2008-02-06

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