EP2594363B1 - Centerless grinding machine - Google Patents

Centerless grinding machine Download PDF

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Publication number
EP2594363B1
EP2594363B1 EP11806686.9A EP11806686A EP2594363B1 EP 2594363 B1 EP2594363 B1 EP 2594363B1 EP 11806686 A EP11806686 A EP 11806686A EP 2594363 B1 EP2594363 B1 EP 2594363B1
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EP
European Patent Office
Prior art keywords
regulating wheel
workpiece
slide mechanism
grinder
swing
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.)
Not-in-force
Application number
EP11806686.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2594363A4 (en
EP2594363A1 (en
Inventor
Tsuyoshi Yagi
Koji Ono
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.)
NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing Co Ltd
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Publication date
Application filed by NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Publication of EP2594363A1 publication Critical patent/EP2594363A1/en
Publication of EP2594363A4 publication Critical patent/EP2594363A4/en
Application granted granted Critical
Publication of EP2594363B1 publication Critical patent/EP2594363B1/en
Not-in-force 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/18—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work
    • B24B5/30—Regulating-wheels; Equipment therefor
    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/02—Frames; Beds; Carriages
    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies

Definitions

  • This invention relates to a centerless grinding machine, as e.g. known from document JP-A-408019944 .
  • grinding accuracy is greatly influenced by the height H of the center axis of the workpiece and a center height angle ⁇ .
  • Figs. 11(a) to 11(c) show a conventional centerless grinding machine, which includes a grinder 1, a regulating wheel 2 arranged parallel to and spaced from the grinder 1, and a blade 3 disposed between the grinder 1 and the regulating wheel 2.
  • the regulating wheel 2 is rotated at a low speed and the grinder 1 is rotated at a high speed in the same direction as the regulating wheel 2, about their respective axes.
  • this grinding machine further includes opposed pairs of guide plates 6 used to guide the workpiece 5 during what is known as through-feed grinding. That is, the guide plates 6 guide the workpiece 5 into the space between the grinder 1 and the regulating wheel 2, and out of this space, while sandwiching the workpiece 5 therebetween.
  • the position of the blade 3 is determined such that the center axis w of the workpiece 5 is higher by height H than the line connecting the center axis g of the grinder 1 to the center axis r of the regulating wheel 2.
  • the height H is called the "workpiece center height” (hereinafter simply referred to as the "center height H").
  • the acute angle ⁇ between the line Gr connecting the center axis g of the grinder 1 to the center axis w of the workpiece 5 (this line is hereinafter referred to as the "grinding centerline Gr") and the line connecting the center axis w of the workpiece 5 to the center axis r of the regulating wheel 2 is called the center height angle relative to the regulating wheel 2 (hereinafter simply referred to as the "center height angle ⁇ ).
  • ⁇ a is the angle between the line connecting center axis g of the grinder 1 to the center axis r of the regulating wheel 2 and the grinding centerline Gr
  • ⁇ b is the angle between the line connecting the center axis g of the grinder 1 to the center axis r of the regulating wheel 2 and the line connecting the center axis w of the workpiece 5 to the center axis r of the regulating wheel 2.
  • the cross-section of the workpiece 5 tends to be a strain circle having an odd number of corners but equal in diameter at any portion thereof, and if the center height angle ⁇ is too large, the cross-section of the workpiece 5 tends to be a strain circle having an even number of corners and different in diameter at different portions thereof.
  • the swivel mechanism D adjusts the way how the workpiece 5 contacts the grinder 1 and the regulating wheel 2 from the inlet to outlet of the grinder (distribution of depth of cutting).
  • the distribution of depth of cutting is adjusted e.g. by adjusting the parallelism between the grinder 1 and the regulating wheel 2 by changing the direction of the center axis r of the regulating wheel 2 as shown by the arrow d in Fig. 11(c) .
  • the above-mentioned adjustment of the center height angle ⁇ is performed only when, or immediately before, the center height angle ⁇ changes to such an extent as to detrimentally influence the grinding accuracy by interrupting the grinding operation.
  • the shape of the regulating wheel 2 is adjusted by truing such that the workpiece 5 comes into line contact with the regulating wheel 2, i.e. the workpiece 5 comes into contact with the regulating wheel 2 along a straight line.
  • truing has to be performed with the diamond height Ht and the truing inclination angle ⁇ t adjusted to values given by the respective equations: Ht ⁇ H 1 - 1 / 2 • D / Dc + D ⁇ t ⁇ ⁇ 1 - 1 / 2 • D / Dc + D
  • H is the center height of the workpiece
  • ⁇ is the inclination angle of the regulating wheel during grinding
  • D is the diameter of the workpiece
  • Dc is the diameter of the regulating wheel
  • Ht is the diamond height for truing the regulating wheel
  • ⁇ t is the inclination angle of the regulating wheel during truing.
  • the grinder 1 and the grinder base supporting the grinder are placed on a bed 10, and a swivel plate 18 and an upper slider 12 supporting the regulating wheel 2 are provided on the bed 10 through a horizontal slide mechanism such that the line connecting the center axis g of the grinder 1 to the center axis r of the regulating wheel 2 is inclined relative to a horizontal plane.
  • Patent document 1 JP Patent Publication 2008-149387A (page 7, paragraphs 0031 to 0032, and page 10, Figs. 1 and 2 )
  • the center height angle ⁇ of the workpiece 5 relative to the regulating wheel 2 changes when the outer diameter of the grinder 1 and/or the outer diameter of the regulating wheel 2 changes.
  • An object of the present invention is to make it possible to easily and simply set and adjust the position of the regulating wheel 2 according to the outer diameter of the grinder 1, the outer diameter of the regulating wheel 2 and the outer diameter of the workpiece 5.
  • the present invention provides a centerless grinding machine comprising a bed, a table mounted on the bed through a horizontal slide mechanism, a swing base mounted on the table through a ⁇ -swing slide mechanism, an upper slider mounted on the swing base through a lateral slide mechanism, a regulating wheel mounted on the upper slider, a grinder mounted on the bed so as to be in juxtaposition with the regulating wheel, wherein a workpiece can be placed between the grinder and the regulating wheel, wherein the grinder has a center axis which is located higher than a center axis of the regulating wheel by an predetermined amount, and a blade provided between the grinder and the regulating wheel and supporting the workpiece from under the workpiece, the blade being capable of keeping constant a center axis of the workpiece, wherein the horizontal slide mechanism is capable of moving the regulating wheel relative to the bed according to the workpiece by moving the table in a direction of a line connecting the center axis of the grinder to the center axis of the workpiece, wherein the ⁇ -swing
  • the ⁇ -swing slide mechanism is capable of swinging the regulating wheel about a swing axis extending parallel to the center axis of the regulating wheel, it is possible to adjust the center height angle to any desired value. It is thus possible to easily set the center height angle to an optimum value according to the shape of the workpiece and the grinding conditions.
  • the center height angle would be around 7° but varies according to the grinding steps and the shape of the workpiece.
  • the center height angle can be adjusted to any desired value.
  • the height of the center axis of the workpiece is kept constant, and thus the center height angle is determined solely by the inclination angle of the regulating wheel, which is changed by the ⁇ -swing slide mechanism.
  • the center axis of the workpiece may be always kept at the same height as the center axis of the grinder.
  • the regulating wheel and the blade can be configured such that they move in unison with each other, except when the lateral slide mechanism is moved.
  • the blade is mounted to the swing base, and the blade is configured to be swung about the swing axis by the ⁇ -swing slide mechanism together with the regulating wheel, and further configured to be moved by the horizontal slide mechanism together with the regulating wheel.
  • the center height angle of the workpiece is easily adjustable, it is possible to configure the horizontal slide mechanism, the ⁇ -swing slide mechanism, and the lateral slide mechanism such that they are capable of keeping constant the center height angle irrespective of the outer diameter of the grinder and the outer diameter of the regulating wheel.
  • the horizontal slide mechanism, the ⁇ -swing slide mechanism, and the lateral slide mechanism may be manually operated to adjust the center height angle to the predetermined constant value.
  • the center height angle may be automatically controlled to the constant value by automatically detecting the outer diameters of the grinder, regulating wheel and workpiece, and the center height angle by means of a known reading device, and automatically controlling, based on these detected values, the horizontal slide mechanism, the ⁇ -swing slide mechanism, and the lateral slide mechanism so as to adjust the center height angle to the constant value.
  • the horizontal slide mechanism, the ⁇ -swing slide mechanism, and the lateral slide mechanism may be configured such that they are capable of keeping constant the contact point between the grinder and the workpiece and the contact point between the regulating wheel and the workpiece irrespective of the outer diameter of the grinder and the outer diameter of the regulating wheel.
  • the horizontal slide mechanism, the ⁇ -swing slide mechanism, and the lateral slide mechanism may be configured so as to be capable of keeping constant the contact point between the regulating wheel and the workpiece irrespective of the outer diameter of the workpiece.
  • the contact point between the regulating wheel and the workpiece remains unchanged.
  • the guide plates are mounted to e.g. the spindle head of the regulating wheel or otherwise fixed in position relative to the frame supporting the regulating wheel. Otherwise, it is necessary to adjust these guide plates every time the outer diameter of the regulating wheel changes.
  • the diamond height is kept constant during truing. This simplifies the positioning adjustment of a truing device used for truing.
  • the swing axis of the ⁇ -swing slide mechanism may coincide with the center axis of the workpiece.
  • the ⁇ -swing slide mechanism may comprise at least one first arcuate surface formed on a top surface of the table, and at least one second arcuate surface formed on a bottom surface of the swing base, wherein when the regulating wheel swings about the swing axis, the first arcuate surface and the second arcuate surface slide relative to each other, thus guiding the swing motion.
  • the at least one first arcuate surface may comprise two concentric arcuate surfaces having different radii from each other and formed on the top surface of the table
  • the at least one second arcuate surface may comprise two concentric arcuate surfaces formed on the bottom surface of the swing base and configured to be slidable relative to the respective two arcuate surfaces formed on the top surface of the table.
  • the at least one first arcuate surface and the at least one second arcuate surface may be pressed against each other by a shift prevention preloading mechanism.
  • the arcuate surfaces are pressed against each other under the biasing force of an elastic member such as a spring.
  • the shift prevention preloading mechanism may comprise a bolt extending through an elongated hole formed in the swing base and threadedly engaged in a threaded hole formed in the table, wherein the bolt is movable in the elongated hole when the swing base is swung.
  • a swivel mechanism may be provided between the table and the bed, wherein the swivel mechanism is capable of adjusting the directions of the center axis of the grinder and the center axis of the regulating wheel, and wherein the horizontal slide mechanism is capable of moving the table relative to the bed after the directions of the axes of the grinder and the regulating wheel have been adjusted by the swivel mechanism.
  • the horizontal slide mechanism performs the above moving function after the swivel mechanism has adjusted the direction of the center axis of the regulating wheel relative to the center axis of the grinder, while keeping the adjusted direction of the center axis of the regulating wheel.
  • the horizontal slide mechanism moves the table relative to the bed in the direction of the line connecting the center axis of the grinder with the center axis of the workpiece, thereby moving the regulating wheel according to the workpiece.
  • the direction in which the table is moved relative to the bed by the horizontal slide mechanism may be a horizontal direction or may be inclined relative to a horizontal direction.
  • the ⁇ -swing slide mechanism is capable of swinging the regulating wheel about a swing axis extending parallel to the center axis of the regulating wheel, it is possible to adjust the center height angle so as to be constant even when the outer diameter of the grinder or the outer diameter of the regulating wheel changes. This eliminates the necessity of complicated control of the regulating wheel when the outer diameter of the grinder or the outer diameter of the regulating wheel changes.
  • Figs. 1 to 9 show a centerless grinding machine 17 embodying the present invention, which is used to grind cylindrical workpieces 5 such as cylindrical rollers.
  • the grinding machine includes a grinder 1 having a circular cross-section, a regulating wheel 2 arranged parallel to and spaced from the grinder 1, and a blade 3 disposed between the grinder 1 and the regulating wheel 2.
  • a workpiece 5 having a circular cross-section is fed into the gap between the grinder 1 and the regulating wheel 2.
  • the center axis g of the grinder 1 and the center axis w of the workpiece 5 are at the same height.
  • the grinding centerline Gr is horizontal.
  • the grinding machine further includes a bed 10 placed on a floor, and a table 11 placed on the bed 10 through a horizontal slide mechanism A so that the table 11 is horizontally movable relative to the bed 10.
  • the horizontal slide mechanism A can horizontally move the table 11 relative to the bed 10 while the workpiece 5 is being ground, thereby moving the regulating wheel 2 toward or away from the grinder 1 according the outer diameter of the workpiece 5 in the direction perpendicular to the center axis r of the regulating wheel 2 as viewed from the top of the grinding machine.
  • the moving direction of the regulating wheel 2 may be substantially parallel to the grinding centerline Gr and preferably strictly parallel to the grinding centerline Gr, as viewed from one side of the grinding machine (see e.g. Fig. 2 ). In the embodiment, since the grinding centerline Gr is horizontal, the table 11 also moves horizontally.
  • the grinding machine further includes a swivel mechanism D between the table 11 and the bed 10.
  • the swivel mechanism D includes a swivel plate 18 which can laterally swivel the table 11 relative to the bed 10 (in the direction of the arrow d in Fig. 11(c) ), thereby finely adjusting the directions of the center axis g of the grinder 1 and the center axis r of the regulating wheel 2.
  • By adjusting the directions of these center axes it is possible to adjust how the workpiece 5 contacts the grinder 1 and the regulating wheel 2 (grinding amount distribution) from the inlet to outlet of the grinder. Ordinarily, a plurality of such workpieces 5 are fed continuously from the inlet to outlet of the grinder and ground (see the arrow e in Fig. 11(c) ).
  • the horizontal slide mechanism A is provided at a higher level than the swivel mechanism D. With the axis g of the grinder 1 and the axis r of the regulating wheel 2 adjusted to predetermined directions by the swivel mechanism D, the horizontal slide mechanism A can move the regulating wheel 2 horizontally while keeping the adjusted direction of the center axis r of the regulating wheel 2.
  • a swing base 13 is mounted on the table 11 through a ⁇ -swing slide mechanism B.
  • the ⁇ -swing slide mechanism B can swing the swing base 13 about a swing axis s which is parallel to the center axis r of the regulating wheel 2.
  • the swing axis s coincides with the center axis w of the workpiece 5.
  • An upper slider 12 is mounted on the swing base 13 through a lateral slide mechanism C.
  • the lateral slide mechanism C can slide the upper slider 12 in a straight line in the direction of the line connecting the center axis w of the workpiece 5 to the center axis r of the regulating wheel 2 (direction indicated by the arrow c in Fig. 2 ), relative to the swing base 13.
  • the inclination angle of the swing base 13 relative to the table 11 changes by swinging the swing base 13 with the ⁇ -swing slide mechanism B, and the direction in which the upper slider 12 is moved by the lateral slide mechanism C varies with the inclination angle of the swing base 13. That is, according to the inclination angle of the swing base 13, the upper slider 12 may slide horizontally or in any other direction. But irrespectively of the inclination angle of the swing base, when the upper slider slides, the regulating wheel 2, which is mounted on the upper slider 12, is moved such that its center axis r moves toward or away from the center axis w of the workpiece 5.
  • the regulating wheel 2 is supported by a frame of the upper slider 12 so as to be rotatable about its axis r, and can be driven by a driving source such as an electric motor.
  • the upper slider 12 carries on its top a truing device 15.
  • the regulating wheel 2 is supported by a spindle head to which guide plates 6 at the inlet and outlet of the grinder on the side of the regulating wheel 2 are fixed so as to be moved in the directions of the arrows a, b and c together with the regulating wheel 2.
  • the grinder 1 is mounted on the bed 10 in juxtaposition with the regulating wheel 2.
  • the grinder 1 is supported by a frame of a grinder base 14 so as to be rotatable about its axis g, and can be driven by a driving source such as an electric motor.
  • the grinder base 14 may be configured to be capable of moving the grinder 1 horizontally in parallel to the regulating wheel.
  • Guide plates 6 corresponding to the respective guide plates 6 on the side of the regulating wheel 2 are provided on the side of the grinder 1 in a fixed state (by being fixed to a workpiece rest 19).
  • the grinder 1 and the regulating wheel 2 are positioned such that their respective center axes g and r extend parallel to each other, and if necessary, they are positioned such that their axes form a feed angle necessary for through-feed grinding.
  • the ⁇ -swing slide mechanism B can adjust the center height angle ⁇ of the workpiece 5 relative to the regulating wheel 2 by swinging the swing base 13 about the swing axis s, which is parallel to the axis r of the regulating wheel 2 (in the direction of the arrow b in Fig. 2 ).
  • the ⁇ -swing slide mechanism B includes at least one arcuate surface formed on the top surface of the table 11, and at least one arcuate surface formed on the bottom surface of the swing base 13 and in sliding contact with the at least one arcuate surface on the table 11.
  • the swing base 13 swings about the swing axis s.
  • the center axis of the regulating wheel 2 moves from r' to r".
  • the at least one arcuate surface formed on the top surface of the table 11 is made up of two concentric arcuate surfaces 11a and 11b having different radii from each other, while the at least one arcuate surface formed on the bottom surface of the swing base 13 is made up of two concentric arcuate surfaces 13a and 13b which are in surface contact with, and adapted to slide on, the respective arcuate surfaces 11a and 11b, so that the swing base 13 can reliably swing relative to the table 11.
  • arcuate surfaces 11a and 13a have different diameters from the arcuate surfaces 11b and 13b, respectively, it is possible to support the swing base 13 by surface contact at two spaced apart end portions of the table 11. This allows stable, vibration-free swing motion of the swing base 13.
  • the arcuate surface 11a which is located nearer to the swing axis s than the arcuate surface 11b, and the corresponding arcuate surface 13a of the swing base 13 are pressed against each other by a shift prevention preloading mechanism 16.
  • the shift prevention preloading mechanism 16 includes a presser member 16c provided on the swing base 13, and bolts 16b extending through the presser member 16c and threaded into threaded holes 11c formed in the table 11.
  • the presser member 16c has an elastic member 16a in the form of a spring which elastically biases the swing base 13 against the table 11. This allows smooth sliding movement of the arcuate surfaces 11a and 13a relative to each other.
  • the swing base 13 has an elongated hole 13c in which the bolts 16b can move when the swing base 13 swings about the swing axis s.
  • Another similar shift prevention preloading mechanism may be provided between the other arcuate surfaces 11b and 13b.
  • the ⁇ -swing slide mechanism B of this centerless grinding machine 17 can adjust the center height angle ⁇ of the regulating wheel 2 relative to the workpiece 5 by swinging the regulating wheel 2 about the swing axis s, which is parallel to the center axis r of the regulating wheel 2 (the swing axis s being the center axis w of the workpiece 5).
  • the swing axis s being the center axis w of the workpiece 5.
  • the outer diameter of the regulating wheel 2 changes, due to wear, from the state shown by phantom line in Fig. 3 to the state shown by solid line.
  • the lateral slide mechanism C moves the upper slide 12 and the regulating wheel 2 in the direction of the arrow c1 until the axis r of the regulating wheel 2 moves to the position shown by r'.
  • the blade 3 moves together with the regulating wheel 2.
  • the center height angle ⁇ of the workpiece 5 relative to the regulating wheel 2 remains unchanged before and after the regulating wheel 2 has been moved in the above manner.
  • the regulating wheel 2 is moved by the lateral slide mechanism C in the direction of the line connecting the center axis w of the workpiece 5 to the center axis r of the regulating wheel 2. That is, in Fig. 3 , which is a sectional view, after the regulating wheel 2 has been moved by the lateral slide mechanism, its center axis r' is located on the line connecting the center axis w of the workpiece 5 to the center axis r of the regulating wheel 2 before the regulating wheel 2 is moved by the lateral slide mechanism.
  • the center height angle ⁇ of the workpiece 5 relative to the regulating wheel 2 remains unchanged before and after the regulating wheel 2 has been moved in the above manner. That is, the angles ⁇ and ⁇ ' in Fig. 4 are equal to each other. This is because the regulating wheel 2 is moved by the horizontal slide mechanism A in the direction parallel to the grinding centerline Gr.
  • the outer diameters of the grinder 1 and the regulating wheel 2 both decrease due to wear from the states shown by phantom lines in Fig. 5 to the states shown by solid lines.
  • the lateral slide mechanism C moves the regulating wheel 2 such that its center axis moves from the position shown by r in the direction of the arrow c2 in Fig. 5 .
  • the blade 3 is not moved by the lateral slide mechanism C at this time.
  • the height of the center axis w of the workpiece 5 remains unchanged at this time.
  • the regulating wheel 2 is moved by the horizontal slide mechanism A in the horizontal direction shown by the arrow a2 in Fig. 5 , together with the blade 3. At this time too, the height of the center axis w of the workpiece 5 remains unchanged.
  • the center height angle ⁇ of the workpiece 5 relative to the regulating wheel 2 remains unchanged before and after the regulating wheel 2 has been moved in the above manner. That is, the angles ⁇ and ⁇ ' in Fig. 5 are equal to each other.
  • the difference in height Hg between the center axis g of the grinder 1 and the center axis r of the regulating wheel 2 decreases to Hg' in Fig. 5 .
  • the center height angle ⁇ is kept constant when the outer diameter of the grinder 1 and/or the outer diameter of the regulating wheel 2 changes due to wear during grinding, it is possible to grind workpieces continuously and stably.
  • the fact that the center axis g of the grinder 1 and the center axis w of the workpiece are both kept at constant heights makes it possible more stably grind workpieces continuously.
  • the horizontal slide mechanism A, ⁇ -swing slide mechanism B, and lateral slide mechanism C are configured to automatically keep constant the center height angle ⁇ irrespective of the outer diameters of the grinder 1 and the regulating wheel 2, it is possible to eliminate the necessity of complicated position adjustment of the regulating wheel 2, which was necessary in conventional arrangements.
  • the swing base 13 is swung relative to the table 11 from the position shown by phantom line in Fig. 6 to the position shown by solid line by the ⁇ -swing slide mechanism B, together with the blade 3.
  • the center height angle ⁇ of the regulating wheel 2 relative to the workpiece 5 can be easily changed to an optimum value every time the shape of the workpiece 5 and/or the grinding conditions change.
  • adjustment is made so that the swing axis s, about which the swing base 13 is swung, coincides with the center axis w of the workpiece 5.
  • This adjustment is made by moving the blade 3 in the direction of the arrow f in Fig. 7 to adjust its height, and moving the upper slider 12 in the direction of the arrow c3 in Fig. 7 by means of the lateral slide mechanism C to adjust the position of the regulating wheel 2.
  • the table 11 is moved in the direction of the arrow a3 in Fig. 7 by means of the horizontal slide mechanism A.
  • the positions of the regulating wheel 2, workpiece 5 and blade 3 are adjusted relative to the grinder 1.
  • the center height angle ⁇ of the workpiece 5 relative to the regulating wheel 2 remains unchanged. That is, the angles ⁇ and ⁇ ' are equal to each other.
  • the difference in height between the center axis g of the grinder 1 and the center axis r of the regulating wheel 2 decreases from Hg to Hg'.
  • the horizontal slide mechanism A, the ⁇ -swing slide mechanism B and the lateral slide mechanism C are capable of keeping constant the contact point between the grinder 1 and the workpiece 5 and the contact point between the regulating wheel 2 and the workpiece 5 irrespective of the outer diameter of the grinder 1 or the outer diameter of the regulating wheel 2. Also, the horizontal slide mechanism A, the ⁇ -swing slide mechanism B and the lateral slide mechanism C can keep constant the contact point between the regulating wheel 2 and the workpiece 5 irrespective of the outer diameter of the workpiece 5.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
EP11806686.9A 2010-07-12 2011-07-07 Centerless grinding machine Not-in-force EP2594363B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010157839A JP5612936B2 (ja) 2010-07-12 2010-07-12 センターレス研削盤
PCT/JP2011/065594 WO2012008356A1 (ja) 2010-07-12 2011-07-07 センターレス研削盤

Publications (3)

Publication Number Publication Date
EP2594363A1 EP2594363A1 (en) 2013-05-22
EP2594363A4 EP2594363A4 (en) 2013-12-25
EP2594363B1 true EP2594363B1 (en) 2015-06-03

Family

ID=45469359

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11806686.9A Not-in-force EP2594363B1 (en) 2010-07-12 2011-07-07 Centerless grinding machine

Country Status (3)

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EP (1) EP2594363B1 (enrdf_load_stackoverflow)
JP (1) JP5612936B2 (enrdf_load_stackoverflow)
WO (1) WO2012008356A1 (enrdf_load_stackoverflow)

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JP5725089B2 (ja) * 2013-06-11 2015-05-27 日本精工株式会社 研削盤
CN103991019A (zh) * 2014-05-21 2014-08-20 芜湖求精紧固件有限公司 磨床
CN104209821A (zh) * 2014-09-05 2014-12-17 河北富恒轴承科技开发有限公司 圆锥滚子无心磨床恒中心高磨削方法
DE102014115149B3 (de) * 2014-10-17 2016-01-21 Schaudt Mikrosa Gmbh Schleifmaschine, insbesondere kompakt gestaltete spitzenlose Schleifmaschine
JP6428374B2 (ja) * 2015-02-26 2018-11-28 株式会社ジェイテクト 加工装置
CN104816206B (zh) * 2015-03-29 2017-03-01 东莞市联洲知识产权运营管理有限公司 一种无心磨床导轮区域的装配结构
CN104816205B (zh) * 2015-03-29 2017-01-25 东莞市联洲知识产权运营管理有限公司 一种无心磨床的导轮装置
JP2017039177A (ja) * 2015-08-18 2017-02-23 コマツＮｔｃ株式会社 研削盤および研削方法
CN105881140B (zh) * 2016-06-02 2017-11-10 张清金 一种柱形石礅磨边装置
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CN106112792B (zh) * 2016-06-30 2018-06-22 宁波安杰森精密机械制造有限公司 一种轴承套圈滚道复合超精研机
CN106141892B (zh) * 2016-06-30 2018-06-22 宁波安杰森精密机械制造有限公司 一种轴承套圈滚道和挡边复合超精研机
CN106112759B (zh) * 2016-06-30 2018-06-22 宁波安杰森精密机械制造有限公司 一种轴承套圈的滚道复合超精研机
CN106078420A (zh) * 2016-08-09 2016-11-09 无锡尊宝电动车有限公司 一种具有全方位打磨效果的电动车刹车鼓打磨装置
CN106181761A (zh) * 2016-09-21 2016-12-07 苏州市海神达机械科技有限公司 多功能精密机械加工台面
JP2018051709A (ja) * 2016-09-30 2018-04-05 コマツＮｔｃ株式会社 工作機械のベッドおよび工作機械
JP6808224B2 (ja) * 2016-12-14 2021-01-06 株式会社アイエイアイ ねじ軸研磨装置とねじ軸研磨方法
CN106863069A (zh) * 2017-04-05 2017-06-20 黄小芬 四轴磨齿机
CN109227350B (zh) * 2018-11-15 2023-12-19 常州神力热喷涂技术有限公司 陶瓷活塞杆外圆垳磨机
JP7298521B2 (ja) * 2020-03-10 2023-06-27 株式会社デンソー バリ取り装置
CN111331687B (zh) * 2020-03-12 2021-06-25 潜山大兴木业有限公司 一种板材加工用多功能打孔装置
CN115716222B (zh) * 2022-11-25 2023-06-30 丽水市华洲汽车部件科技股份有限公司 一种汽车离合器面片数控双面定轨移动式磨床
CN117161854A (zh) * 2023-09-08 2023-12-05 宁波宝鼎自动化机械科技有限公司 一种直线轴承衬套外圆磨削设备及其工作方法

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