EP1591197B1 - Procede de rectification et dispositif de rectification - Google Patents

Procede de rectification et dispositif de rectification Download PDF

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Publication number
EP1591197B1
EP1591197B1 EP03811872A EP03811872A EP1591197B1 EP 1591197 B1 EP1591197 B1 EP 1591197B1 EP 03811872 A EP03811872 A EP 03811872A EP 03811872 A EP03811872 A EP 03811872A EP 1591197 B1 EP1591197 B1 EP 1591197B1
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EP
European Patent Office
Prior art keywords
rotary
brush
grinding
workpiece
grinding stone
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 - Lifetime
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EP03811872A
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German (de)
English (en)
Japanese (ja)
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EP1591197A4 (fr
EP1591197A1 (fr
Inventor
Fukuo Musashi Seimitsu Industry Co. Ltd. MURAI
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Musashi Seimitsu Industry Co Ltd
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Musashi Seimitsu Industry Co Ltd
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Publication of EP1591197A1 publication Critical patent/EP1591197A1/fr
Publication of EP1591197A4 publication Critical patent/EP1591197A4/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
    • B24D13/10—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising assemblies of brushes
    • 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
    • B24B19/08—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section
    • 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
    • B24B29/005—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 using brushes
    • 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
    • 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
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor

Definitions

  • the present invention relates to an improvement in a grinding method and apparatus for grinding a peripheral surface of a turned workpiece by a rotary grinder being rotated by a grinding wheel spindle.
  • a grinding burr and a grinding track remain on a workpiece, which is ground by a rotary grindstone. Therefore, it is conventional practice that the ground workpiece is subjected to a treatment in an exclusive deburring means and an exclusive polishing apparatus where removal of a grinding burr and polishing of a ground surface are carried out.
  • an exclusive deburring means and an exclusive polishing apparatus where removal of a grinding burr and polishing of a ground surface are carried out.
  • the equipment cost is high because of the need for the exclusive deburring and polishing equipment. For this reason, it is difficult to reduce the workpiece grinding costs.
  • Patent document 2 shows a conventional grinding tool for grinding an inner peripheral surface of a workpiece by inserting it into a round hole of the workpiece to be ground.
  • the tool has a first shank region for clamping into a grinding machine and a second shank region, which extends from the first shank region to a grinding region.
  • the grinding area is followed by a holding area.
  • At these a brush can be screwed on.
  • the shaft is formed hollow from the second shaft portion to the support portion.
  • the present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a grinding method and apparatus where removal of a grinding burr and polishing of a ground surface following grinding of a workpiece can be performed , which allows the movement of the workpiece and the exclusive deburring and polishing equipment are not required, which can contribute to a reduction in processing costs.
  • a method of grinding an outer peripheral surface of a turned workpiece by a rotary grinder rotated by a grinding wheel spindle characterized in that the method comprises the steps of to fix a rotary brush on one side of the rotary grindstone so as to be rotated together with the rotary grindstone, to grind the workpiece by rotary grindstone and then to axially move the rotary grindstone and the workpiece with respect to each other, and to brush a ground surface of the workpiece by the rotary brush , whereby the ground surface of the workpiece is polished.
  • a method of grinding an outer peripheral surface of a turned workpiece by a rotary grinder rotated by a grinding wheel spindle characterized in that the method comprises the steps of attaching a rotary brush to one side of the rotary grinding stone to rotate it together with the rotary grindstone, to grind the workpiece by the rotary grindstone, and then to axially move the rotary grindstone and the workpiece with respect to each other, and to brush end edges of a ground surface of the workpiece by the rotary brush, thereby grinding a grinding burr of the workpiece is eliminated.
  • a method of grinding an outer peripheral surface of a turned workpiece by a rotary grinder rotated by a grinding wheel spindle characterized in that the method comprises the steps of attaching a rotary brush to one side of the rotary grinding stone so that it is rotated together with the rotary grindstone to grind the workpiece by the rotary grindstone, and then to move the rotary grindstone and the workpiece axially to each other, and to brush the entire ground surface of the workpiece from end edges of the grinded surface by the rotary brush the removal of a grinding burr of the workpiece and the polishing of the ground surface are achieved.
  • removal of the grinding burr of the workpiece and polishing of the buffed surface can be achieved by moving the rotary grinding stone and the workpiece axially in relation to each other following grinding of the workpiece by the rotary grinding stone and the entire grinding surface of the workpiece brushed the end edges of the grinding surface of the workpiece by the rotary brush.
  • the grinding, the deburring and the polishing can be carried out continuously, and consequently the detachment of the workpiece between these treatments is not required. Therefore, it is possible to substantially shorten the processing time as compared with the conventional case where a deburring step and a polishing step are specifically provided. This can contribute to a reduction of the processing costs in cooperation with an exclusive deburring device and an exclusive polishing device as in the prior art are not required.
  • a grinding apparatus comprising a rotary grinder attached to a grinding wheel spindle for grinding an outer peripheral surface of a workpiece by the rotation of the rotary grinding stone, characterized in that a rotary brush is mounted adjacent to the rotary grinding stone is to brush the workpiece ground by the rotary grindstone and the rotary brush is formed into a variable diameter brush so that when the grinding wheel spindle is rotated at a speed lower than the grinding rotary grinding stone turning speed, the diameter of the rotary brush is smaller than that of the rotary grinding stone, but when the grinding wheel spindle is rotated is rotated at a speed which is equal to the grinding speed, the diameter of the rotary brush is greater than that of the rotary grinding stone.
  • the removal of a grinding burr and the polishing of a ground surface of the workpiece can be reliably achieved by the brushing using the rotary brush, wherein only the rotary grinding stone and the workpiece are axially adjacent to each other after the grinding of the outer peripheral surface of the workpiece by the rotary grinding stone to be moved.
  • the loosening of the workpiece is not required between these treatments, and thus it is possible to shorten the processing time significantly. This can contribute to a reduction of the processing costs in cooperation with the fact that an exclusive deburring device and an exclusive polishing device are no longer required.
  • the rotary brush When machining the rotary grinding stone, which is performed at a low speed, the rotary brush is contracted to a diameter smaller than the diameter of the rotary grinding stone, whereby the interference of the rotary brush and a machining tool can be avoided with each other.
  • the rotary brush When grinding the workpiece, the rotary brush is expanded to the diameter larger than that of the rotary grinding stone, whereby the removal of the grinding burr and the polishing of the ground surface can be performed substantially simultaneously with the grinding.
  • the rotary brush consists of a brush body attached adjacent to the rotary grindstone, and a brush element wire is embedded in an outer circumference of the brush body, the brush element wire having contraction and expansion properties for this so that when the brush element wire is in a free state, the brush element wire is in a contracted state where the diameter of the rotary brush is smaller than that of the rotary grindstone, and if the grinding wheel spindle is at a predetermined speed or is rotated more, the brush element wire is expanded by a centrifugal force, whereby the diameter of the rotary brush is larger than that of the rotary grinding stone.
  • the rotary brush can be formed into a brush having a variable diameter by an extremely simple measure where the contraction and expansion properties are provided to the brush element wire.
  • a single or plural resilient bent parts are formed on the brush element wire to impart contraction and expansion properties to the brush element wire.
  • the contraction and expansion properties can be provided to the brush element wire by an extremely simple measure that the resilient bent part is formed on the brush element wire, and thus it becomes possible to provide the rotary brush with a variable diameter brush with a low manufacturing cost provide.
  • the rotary brush consists of a brush body adjacent to the rotary grindstone (22), and a brush element wire is embedded in an outer circumference of the brush body, the brush element wire being arranged so that the brush element wire is in a free state, the element wire is inclined with respect to a radius line of the brush body, so that the diameter of the rotary brush is smaller than that of the rotary grindstone, however, if the grinding wheel spindle is rotated at a predetermined speed or more, it Brush element wire is allowed to rise in the direction of the radius line by a centrifugal force, so that the diameter of the rotary brush is larger than that of the rotary grinding stone.
  • the rotary brush can be formed into a variable diameter brush having an extremely simple structure in which the brush member wire is disposed in an inclined state, and thus the rotary brush can be provided at a low manufacturing cost.
  • an X-directional rail 3 is formed on a table 2 on a machining base part 1 which is disposed on a floor G extending in an X-direction and a Y-direction rail 4 is formed on an upper surface of the machining base part 1 extending in a Y direction perpendicular to the X direction.
  • a headstock 5 and a tailstock 6 are mounted on the X-directional rail 3 so that they can be moved to and from each other.
  • a main spindle 7 is supported in the headstock 5, and a first electric motor 8 for rotating the main spindle 7 is fixed to the headstock 5 and connected to the other end of the main spindle 7.
  • a chuck 9 is fixed to an inner end of the main spindle 7.
  • the table 2 is provided with a tailstock 19 for supporting a workpiece 10 for a non-circular rotary body by cooperation with the chuck 9 of the headstock 9.
  • the workpiece 10 for the non-circular rotary body is a valve-actuating camshaft in a multi-cylinder engine in the case of the illustrated example, and has a plurality of cams 10 a, 10 b, ... 10 n, which are arranged at predetermined intervals in an axial direction, and each one Base circle part 50, which has a constant radius of curvature, and has a cam lobe 51, which leads to circumferentially opposite ends of the base circle part 50 (see Fig. 4).
  • the cams 10a, 10b, ... 10n are different from each other in phase.
  • the camshaft 10 is formed by a precision casting method, and the outer circumferential surfaces of the plurality of cams 10a, 10b, ... 10n must be ground.
  • a movable table 11 is slidably mounted on the Y-direction rail 4, and a movable table drive device 12 capable of reciprocating the movable table 11 along the Y-direction rail 4 is between the table 2 and the movable table 11 attached.
  • the movable table drive device 12 consists of a screw shaft 13 which is arranged in the Y direction and which is threadedly engaged with the movable table 11, and a second electric motor 14 which is fixed to the table 2 and is capable to rotate the propeller shaft 13 in the opposite direction.
  • An upper surface rail 15 and a side rail 16 are formed on an upper surface on one side of the movable table 11 extending in the X direction, and a third electric motor 18 is provided with its output shaft 18a rotated in the X direction Mounted on a motor base part 17 which is slidably mounted on the upper surface rail 15.
  • a grinding wheel spindle 21 is supported with its axis, which is rotated in the X direction, on a grinding wheel headstock 20, which is slidably mounted on the side rail 16, and a rotary grinder stone 22 for grinding the outer peripheral surfaces of the cams 10 a, 10,. .. 10n of the camshaft 10 successively is removably secured to the grinding wheel spindle 21 via a plurality of screws 23, 23 (see Fig. 3).
  • the output shaft 18a of the third electric motor 18 and the grinding wheel spindle 21 are connected via a driving pulley 24 and a driven pulley 25 fixed to the output shaft 18a and the grinding wheel spindle 21, respectively, and via a belt 26 wound around the pulleys 24 and 25 , connected to each other, so that the third electric motor 18 rotatably drives the grinding wheel spindle 21 through its output shaft.
  • connection block driving means 29 capable of reciprocally moving the connection block 28 along the upper surface rail 15 and the side rail 16 is fixed between the connection block 28 and the movable table 11.
  • the connection block driving means 29 is composed of a screw shaft 30 which is arranged in the X direction and which is threadedly engaged with the connection block 28, and a fourth electric motor 31 is fixed to the movable table 11 and capable of rotating the screw shaft 30 to turn in opposite directions.
  • An NC control unit 33 is mounted on the machine base 1.
  • the NC control unit 33 receives a detection signal from a camshaft rotational position sensor 34 mounted on the first electric motor 8 to measure the rotational position of the camshaft 10 from the rotational position of the main spindle 7 and a detection signal from the standard phase sensor 35 at the standard phase of FIG Cam 10a at a predetermined position (the outermost cam 10a closest to the headstock 5 in the illustrated example), in addition to profile data P of the cams 10a, 10b, ... 10n on the camshaft 10, data E of the phase difference between the cams 10a, 10b, ... 10n and data S of the axial distances between the cams 10a, 10b, ... 10n supplied.
  • the NC control unit controls the operation of the first to fourth electric motors 8, 14, 18 and 31 on the basis of these signals and data.
  • the standard phase sensor 35 is attached to a head end of the sensor bearing arm 37 which is pivotally supported on the grinding wheel headstock 20.
  • the sensor mounting arm 37 is capable of pivoting between a detection position A where the standard phase sensor 35 faces the outer peripheral surface of the outermost cam 10a closest to the headstock 5 and a rest position B at which the sensor 35 is spaced from the camshaft 10 to become.
  • An electro-magnetic or electrical actuator 38 is connected to the sensor bearing arm 37 to pivot the sensor bearing arm 37 between the two positions A and B.
  • the standard phase sensor 35 detects a predetermined stroke amount of the cam 10a between the base rotational portion 50 and the cam lobe 51, and the detection signal of the standard phase sensor 35 becomes as a signal showing the standard phase of the cam 10a, the NC control unit 33 fed.
  • the type of standard phase sensor 35 that may be used may be a non-contact sensor or a contact sensor.
  • a rotary brush 40 is attached to the grinding wheel spindle 21 adjacent to the rotary grinding stone 22.
  • the rotary brush 40 consists of an annular brush body 41, a large number of metal wires 42, 42 embedded as brush element wires, which are embedded in the brush body 41, and two paired wire protection plates 43, 43, the opposite sides of the wires 42, 42, wherein the Clamp brush body 41 in between.
  • the brush body 41 and the wire protection plates 43, 43 are secured to the grinding wheel spindle 21 together with the rotary grinding stone 22 via the screws 23, 23.
  • a large number of through holes 44, 44 are axially formed in a plurality of rows in the brush body 41 and arranged on the periphery of the brush body 41, and two head ends of the wires 42, 42, which are folded in pairs on the central part are inserted through the two circumferentially or axially adjacent through holes 44, 44 from the inner periphery side of the brush body 41, respectively, and each of the wires 42 is adhesively bonded or clamped in each of the through holes 44.
  • Each of the wires 42 extends radially outwardly from the brush body 41 and has a ⁇ -bent portion 42 a.
  • the head end of each wire 42 is at a position radially inside the outer peripheral surface of the rotary grinding stone 22 however, as the rotational speed of the grinding wheel spindle 21 is increased to approach the usual grinding rotational speed, the bent portion 42a is stretched by a centrifugal force so as to allow the head end of the wire to be radially outward from the outer peripheral surface of the rotary grinding stone 22 protrudes (Fig. 6 and 7).
  • the rotary brush is formed into a variable diameter brush in which its outer diameter, that is, the outer diameter of the group of wires 42, 42 can be reduced to be smaller, or increased to be larger than that Outer diameter of the rotary grinding stone 22.
  • a processing motor 45 is fixed to one side of the headstock 5 closer to the movable table 11 with its output shaft 45a parallel to the main spindle 7, and a diamond machining tool 46 capable of rotating the grinding stone 22 is attached to the output shaft 45a.
  • the opposite ends of the camshaft 10 are supported by the chuck 9 of the headstock 5 and the tailstock 19 , Then, the sensor support arm 37 is restrained at the detection position A, and the standard phase sensor 35 is closest to the outer peripheral surface of the outermost cam 10a, the headstock 5 (see FIG. 4).
  • the camshaft 10 is rotated at a very low speed over the chuck 9 by the first electric motor 8 on the headstock 5.
  • the phase sensor 35 detects the predetermined stroke amount of the cam 10a, and the detection signal is sent as the standard phase signal to NC control unit 13 is output. Thereafter, the sensor bearing arm 37 is immediately rotated to the rest position B by the actuator 38 to move the standard phase sensor 35 away from the cam 10a. Thus, it is possible to prevent the standard phase sensor 35 from being exposed to a scattered grinding liquid.
  • the NC control unit 33 controls the operation of the first to fourth electric motors 8, 14, 18, and 31 based on the signal received from the camshaft rotational position sensor 34 and the data P, E and S, which are supplied in advance to reciprocate the movable table 11 in the Y direction and this with a very feed low speed in the X direction while the rotary grindstone 22 is rotated at a predetermined grinding rotational speed, whereby the outer peripheral surface of the cam 10 a is ground from one end to the other end by the rotary grinder stone 22.
  • the rotary brush 40 which is rotated at a relatively high speed together with the rotary grindstone 22, has a diameter increased to larger than that of the rotary grindstone 22 by the bent portion 22a of each of the wires 42 due to a centrifugal force is stretched, as shown in Figs. 6 and 7 is shown. Therefore, when the rotary grindstone 22 is guided in the X direction following the grinding, the rotary brush 40, which has a diameter larger than that of the rotary grindstone 22, may have the ground surface of the cam from one of its end edges toward the wheel brush other end edge, as shown in Fig. 8.
  • the removal of the ground burrs and the polishing of the ground surface can be reliably achieved following the grinding of the cam 10a.
  • the removal of the ground burrs following the grinding of the cam 10a can be achieved.
  • the polishing of the ground surface after the grinding of the cam 10a can be achieved.
  • the NC control unit 33 operates the fourth electric motor 31 to move the connection block 28 over only the distance between the adjacent cams 10a, 10b, in the X direction, whereby the next cams 10b,... 10n are sequentially ground and deburred successively and simultaneously in a similar manner by the rotary grinder stone 22 and the rotary brush 40.
  • the standard phase sensor 35 Since the predetermined amount of lift between the base portion 50 and the cam lobe 51 of the cam 10a is detected by the standard phase sensor 35, whereby the standard phase of the cam 10a is measured, as described above, the measurement of the standard phase of the cam 10a can be performed accurately even if a special recess is not formed around the outer circumference of the camshaft 10, whereby a decrease in the slip deviation of the cam 10a, 10b, ... 10n is achieved, thus shortening the grinding time.
  • the rotary brush 40 is formed into a variable diameter brush by forming the elastically bent portion 42a on each of the wires 42, and thus can be provided with a simple structure and a low manufacturing cost.
  • the second embodiment is different from the previous embodiment in the structure of the rotary brush 40. More specifically, through holes 44, 44 are made in a brush body 41 and arranged circumferentially in a large number of sets with the adjacent two sets being arranged in a V-shape on opposite sides of a radius line R to form a pair. Two tip ends of a wire 42 bent into a V shape at its central part are inserted through each of the pairs of the through holes 44, 44 from the inner circumference side of the brush body 41, and the wire 42 is in each of the through holes 44 jammed.
  • the wire 42 bent into a V-shape is inclined in its free state with respect to the radius line R of the brush body 41 so that its head end is disposed radially inside the outer peripheral surface of the rotary grinding stone 22 as shown by a solid line in FIG is.
  • the wire 42 is allowed to lift toward the radius line R by a centrifugal force, as shown by a broken line in FIG Head end protrudes radially outward from the outer peripheral surface of the rotary grinding stone 22.
  • the machining of the rotary grinding stone 22 is possible without being disturbed by the rotary brush 40.
  • the grinding and deburring and / or polishing of each of the cams 10a, 10b,... 10n of the camshaft 10 can be performed by the rotary grinding stone 22 and the rotary brush 40.
  • the rotary brush 40 which is formed with a large number of wires 42, 42, each of which is bent into a V shape on the opposite sides of the radius line R of the brush body 41, also has a simple structure, and thus can be low Production costs are provided.
  • two rotary brushes 40, 40 arranged in pairs are disposed adjacent to opposite sides of the rotary grinding stone 22 and secured to the grinding wheel spindle 21 together with the rotary grinding stone 22 by a plurality of screws 23, 23.
  • a large number of guide holes 52, 52 are made in a brush body 41 of each of the rotary brushes 40 extending radially with their outer end openings in an outer peripheral surface of the brush body, and an annular groove 53 is formed on one side of the brush body 41 to allow all the radially inner ends of the guide bores 52, 52 communicate together.
  • An annular retaining ring 54 is disposed within the annular groove 52, and a large number of bundles of wires 42 wound around the retaining ring 54 are arranged in a large number of guide holes 52, 52 so that their head ends are outwardly of the Guide holes 52, 52 protrude.
  • An adhesive 55 is filled in the annular groove 53, whereby coupled parts of the retaining ring 54 and the wires 42 are fixed to the brush body 41.
  • Each of the wires 42 is formed into a zigzag shape with a large number of resilient bent parts 42a, 42a arranged in a line so as to be able to expand and contract, and when each wire 42 is in a free state, it must be contracted, whereby the diameter of the rotary brush 40 is smaller than that of the rotary grinding stone 22, as shown in FIGS. 10 and 11.
  • each of the wires 42 is stretched by a centrifugal force, whereby the diameter of the rotary brush 40 becomes larger than that of the rotary grinding stone 22, as shown in FIG.
  • the machining of the rotary grinding stone 22 is possible without being disturbed by the rotary brush 40 as in the first embodiment.
  • the grinding and deburring and / or polishing of all the cams 10a, 10b,... 10n of the camshaft 10 can be performed by the rotary grinding stone 22 and the rotary brush 40.
  • the rotary brush 40 which is formed of a large number of wires 42, 42 arranged radially and each of which is bent into a zigzag shape, also has a simple structure and thus can be provided at a low manufacturing cost.
  • the two rotary brushes 40, 40 are disposed adjacent to opposite sides of the rotary grinding stone 22, even when the cam shaft 10 is ground from the left or right direction, the removal of grinding burrs and / or polishing is possible, which is advantageous.
  • the rotation prevention plate 43 closer to the rotary grindstone 22 can not be used, and the rotary grindstone 22 can serve as the wire protection part.
  • a brush element wire made of plastic may be used for the rotary brush 40 instead of each of the wires 42, 42 made of the metal.
  • the standard phase sensor 35 may be mounted at a position different from the grindstone 20, for example, at the table 2.
  • the rotary brush 40 will move axially in FIG With respect to the workpiece 10 moves, but the workpiece 10 can be moved axially.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

L'invention concerne un procédé de rectification permettant de rectifier la surface périphérique d'une pièce (10) en rotation, au moyen d'une meule (22) mise en rotation par un tourillon de meule (21), qui comprend les étapes consistant à faire tourner la meule (22) sur un de ses côtés, à rectifier la pièce (10) au moyen de la meule rotative (22) et à déplacer la meule (22) et la pièce (10) l'une par rapport à l'autre suivant la direction axiale de manière à brosser la surface rectifiée de la pièce avec la brosse rotative (40) afin de polir cette surface rectifiée de la pièce (10), ceci permettant de ne nécessiter ni transfert de la pièce ni dispositifs d'ébavurage et de polissage exclusifs et contribuant à une réduction des coûts de traitement.

Claims (7)

  1. Procédé de meulage d'une surface périphérique extérieure d'une pièce en rotation (10) au moyen d'une pierre de meulage rotative (22) qui est mise en rotation par une broche de disque de meulage (21),
    caractérisé en ce que le procédé comporte les étapes consistant à fixer une brosse rotative (40) sur un côté de la pierre de meulage rotative (22) de façon à ce qu'elle tourne conjointement avec la pierre de meulage rotative, meuler la pièce au moyen de la pierre de meulage rotative (22) puis déplacer la pierre de meulage rotative (22) et la pièce (10) axialement l'une par rapport à l'autre, et brosser une surface meulée de la pièce (10) au moyen de la brosse rotative (40) de façon à polir la surface meulée de la pièce (10).
  2. Procédé de meulage d'une surface périphérique extérieure d'une pièce en rotation (10) au moyen d'une pierre de meulage (22) qui est mise en rotation par une broche de disque de meulage (21),
    caractérisé en ce que le procédé comporte les étapes consistant à fixer une brosse rotative (40) sur un côté de la pierre de meulage rotative (22) pour qu'elle tourne conjointement avec la pierre de meulage rotative (22), meuler la pièce (10) au moyen de la pierre de meulage rotative (22) puis déplacer la pierre de meulage rotative (22) et la pièce (10) axialement l'une par rapport à l'autre, et brosser des bords d'extrémité d'une surface meulée de la pièce au moyen de la brosse rotative (40) de façon à éliminer une bavure de meulage de la pièce (10).
  3. Procédé de meulage d'une surface périphérique extérieure d'une pièce en rotation (10) au moyen d'une pierre de meulage rotative (22) qui est mise en rotation par une broche de disque de meulage (21),
    caractérisé en ce que le procédé comporte les étapes consistant à fixer une brosse rotative (40) sur un côté de la pierre de meulage rotative (22) de façon à ce qu'elle tourne conjointement avec la pierre de meulage rotative (22), meuler la pièce (10) au moyen de la pierre de meulage rotative (22) puis déplacer la pierre de meulage rotative (22) et la pièce (10) axialement l'une par rapport à l'autre, et brosser au moyen de la brosse rotative (40) toute la surface meulée de la pièce (10) depuis des bords d'extrémité de la surface meulée de façon à éliminer une bavure de meulage de la pièce (10) et à polir la surface meulée.
  4. Dispositif de meulage qui comporte une pierre de meulage rotative (22), qui est fixée à une broche de disque de meulage (21) afin de meuler une surface périphérique extérieure d'une pièce (10) en faisant tourner la pierre de meulage rotative (22),
    caractérisé en ce qu'une brosse rotative (40) est fixée à proximité de la pierre de meulage rotative (22) de façon à brosser la pièce (10) meulée par la pierre de meulage rotative (22), et en ce que la brosse rotative (40) est conformée en brosse de diamètre variable de sorte que, lorsque la broche de disque de meulage (21) est mise en rotation à une vitesse qui est inférieure à la vitesse de rotation de meulage de la pierre de meulage rotative (22), le diamètre de la brosse rotative (40) est inférieur à celui de la pierre de meulage rotative (22), mais, lorsque la broche de disque de meulage (21) est mise en rotation une vitesse qui est égale à la vitesse de rotation de meulage, le diamètre de la brosse rotative (40) est supérieur à celui de la pierre de meulage rotative (22).
  5. Dispositif de meulage selon la revendication 4, dans lequel la brosse rotative (40) est constituée d'un corps de brosse (41), qui est fixé à proximité de la pierre de meulage rotative (22), et dans lequel un élément filaire de brosse (42) est inséré dans une périphérie extérieure du corps de brosse (41), l'élément filaire de brosse (42) possédant des propriétés de contraction et d'extension qui sont conférées à cet élément filaire de brosse de sorte que, lorsque l'élément filaire de brosse (42) est dans un état libre, l'élément filaire de brosse (42) est dans un état contracté dans lequel le diamètre de la brosse rotative (40) est inférieur à celui de la pierre de meulage rotative (22), et, lorsque la broche de disque de meulage (21) est mise en rotation à une vitesse de rotation préalablement fixée ou plus, l'élément filaire de brosse (42) est étendu par une force centrifuge de sorte que le diamètre de la brosse rotative (40) est supérieur à celui de la pierre de meulage rotative (22).
  6. Dispositif de meulage selon la revendication 5, dans lequel une seule partie ou plusieurs parties courbées élastiquement (42a) sont formées sur l'élément filaire de brosse (42) afin de conférer des propriétés de contraction et d'extension à l'élément filaire de brosse (42).
  7. Dispositif de meulage selon la revendication 4, dans lequel la brosse rotative (40) est constitué d'un corps de brosse (41), qui est fixé à proximité de la pierre de meulage rotative (22), et un élément filaire de brosse (42) est inséré dans une périphérie extérieure du corps de brosse (41), l'élément filaire de brosse (42) étant disposé de telle sorte que, lorsque l'élément filaire de brosse (42) se trouve dans un état libre, l'élément filaire (42) est incliné par rapport à une ligne radiale (R) du corps de brosse (41) de sorte que le diamètre du corps de brosse (40) est inférieur à celui de la pierre de meulage rotative (22), mais, lorsque la broche de disque de meulage (21) est mise en rotation à une vitesse de rotation préalablement fixée ou plus, l'élément filaire de brosse (42) peut se dresser en direction de la ligne radiale (R) sous l'effet d'une force centrifuge de sorte que le diamètre de la brosse rotative (40) est supérieur à celui de la pierre de meulage rotative (22).
EP03811872A 2002-11-26 2003-09-12 Procede de rectification et dispositif de rectification Expired - Lifetime EP1591197B1 (fr)

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JP2002341988 2002-11-26
JP2002341988 2002-11-26
JP2003038043A JP2004223696A (ja) 2002-11-26 2003-02-17 研削方法及びその装置
JP2003038043 2003-02-17
PCT/JP2003/011673 WO2004048033A1 (fr) 2002-11-26 2003-09-12 Procede de rectification et dispositif de rectification

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CN103358202A (zh) * 2013-07-26 2013-10-23 苏州信能精密机械有限公司 一种零件内孔去毛刺装置
CN105458850B (zh) * 2015-11-13 2019-03-01 宁波星箭航天机械有限公司 三通接头的内孔去毛刺装置
CN105598767B (zh) * 2015-11-13 2018-04-10 宁波星箭航天机械有限公司 用于三通接头的内孔去毛刺装置
CN105598765B (zh) * 2015-11-13 2018-07-27 宁波星箭航天机械有限公司 旋入式锥形直通接头内孔去毛刺装置
CN105458851B (zh) * 2015-11-13 2018-08-31 宁波星箭航天机械有限公司 三通接头的去毛刺装置
CN106826444A (zh) * 2017-03-24 2017-06-13 江苏汉格智能科技有限公司 一种孔内沟槽毛刺去除机构
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AU2003262092A1 (en) 2004-06-18
EP1591197A4 (fr) 2006-06-21
JP2004223696A (ja) 2004-08-12
EP1591197A1 (fr) 2005-11-02
US7435164B2 (en) 2008-10-14
US20060128280A1 (en) 2006-06-15
DE50308620D1 (de) 2007-12-27

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