JP4294601B2 - Dressing method and apparatus in centerless grinding machine - Google Patents

Description

  The present invention relates to a dressing (truing) method for correcting the surface state and shape of a grinding wheel of a grinding wheel and an adjusting wheel of a regulating wheel in a centerless grinding machine for grinding a peripheral surface of a cylindrical workpiece, and an apparatus therefor. It is.

  The means for dressing the grinding wheel of the grinding wheel and the adjusting wheel of the adjusting wheel in the centerless grinding machine is, for example, a means of removing the grinding wheel or the adjusting wheel from the mounting base and performing dressing by the external correction machine, as well as the grinding wheel and the adjusting wheel. There is a means by a dressing (truing) device provided in each back part of the (see, for example, Patent Documents 1 and 2).

Japanese Utility Model Publication No. 3-37886 JP 2004-50380 A

  Since the centerless grinding machine provided with the dressing device is such that the drive mechanism of the dressing tool such as a bite and rotary diamond is disposed for each of the grinding wheel and the adjustment wheel as described in the above documents 1 and 2, The machine will be large and expensive, and the deployment of an off-board correction machine will be expensive.

  The present invention provides a dressing method for a centerless grinding machine and a device therefor, which omits a dressing device for a grinding wheel or an adjustment vehicle disposed in a conventional centerless grinding machine, thereby simplifying the structure of the entire machine, It is intended to reduce the size and cost.

A dressing apparatus in a centerless grinding machine that achieves the above object includes a mounting base having a grinding wheel and a mounting base having an adjustment grindstone facing each other. In a centerless grinder that performs grinding using the rotational grinding force of a grindstone, at least one of the two mounts is mounted with a rotary or bite dressing tool for dressing instead of the grinding wheel or the adjustment grindstone. The dressing method is configured to dress the grinding wheel or adjusting grindstone of the other mounting base with a rotary type or bite type dressing tool attached to one of the mounting bases.
The second means of the dressing apparatus includes a support portion in which at least one of the mounting bases supports the grinding wheel having the grinding wheel or the adjusting wheel having the adjusting grinding wheel in a both-side or cantilever shape. A rotary dressing tool is provided with means supported by the support portion in a both-end or cantilever manner,
According to a third means of the dressing apparatus, at least one of the two mounting bases fixes the support portion pivotally supporting one end of the fixed shaft and the other free end of the fixed shaft. And a mounting part rotatably mounted on the fixed shaft, and a rotary dressing tool mounted on the mounting part. And the fourth means is that the other mounting base in the second or third means of the dressing device is provided with a bite type dressing tool.

  The dressing method and apparatus for a centerless grinder according to the present invention can attach a grinding wheel having a grinding wheel and an adjusting wheel having an adjusting wheel to either mounting base, and one of both mounting bases. It is possible to arrange a dressing tool for each of them, and it is possible to dress a dressing tool on one mounting base and dress a grinding wheel or adjusting grinding wheel on the other mounting base. In addition, there is no need to provide a separate drive mechanism for dressing. Not only is the workability improved by simply placing a dressing tool on one of the mounting bases, but also the structure is simple, downsized, and low cost. is there.

  The drawings show an embodiment of the dressing method and apparatus in the centerless grinding machine according to the present invention, and will be described below with reference to the drawings.

Example 1
1 and 2 are simplified views of a centerless grinding machine. The centerless grinding machine A is opposed to a pair of mounting bases 2 and 3 provided on the machine base 1 and the mounting bases 2 and 3, respectively. A grinding wheel 4 and an adjustment wheel 5 mounted in a state, a grinding table 6 disposed therebetween, and a blade 7 for supporting a workpiece w supported by the grinding table 6. In the example, a centerless grinding machine of a so-called both-support type shaft-fixed type in which both ends of each axle 8 of the grinding wheel 4 and the adjusting wheel 5 are fixed to the respective mounting bases 2 and 3 in a both-supported manner is shown. It is.

  As shown in FIG. 3, the grinding wheel 4 includes a rotating cylinder 10 fitted on the outer periphery of the axle 8 via a bearing 9 such as a thrust, radial, or slip, and on the outer periphery of the rotating cylinder 10, A pulley 10a for rotational movement is provided near the end, a grinding wheel 11 is provided near the other end, and a large-diameter portion 8a is provided at one end of the axle 8. A holding type shaft fixed type grinding wheel 4 is configured.

  The mounting base 2 is provided with a pair of support portions 12 and 12, each support portion 12 being divided into a receiving side 12a having an upward semicircular receiving portion and a lid side 12b having a downward semicircular receiving portion. The outer peripheral surfaces of the gripping portions 8c, 8c at both ends of the axle 8 in the vehicle 4 are sandwiched from the diameter direction by both semicircular receiving portions, and the inner flange surface portion 8b of the large diameter portion 8a following the axle 8 is supported on one side. The grinding wheel 4 is positioned in the axial direction from one axial end direction of the axle 8 (fixed shaft) with respect to the mounting base 2 by tightening with the bolt 13 while being in contact with the outer surface portion of the portion 12. It is fixed to both ends in a state.

  The adjustment wheel 5 has the same configuration as that of the grinding wheel 4, and the axle 14 includes a pulley portion 15 a for rotation and an adjustment wheel 16 on the outer periphery of a rotating cylinder 15 fitted through a bearing 9. The same holds true for the fixed state to the mounting base 3, and the gripping portions 14 c and 14 c at both ends of the axle 14 are sandwiched between the receiving side 17 a and the lid side 17 b of each supporting part 17 of the mounting base 3. At the same time, the inner flange surface portion 14b of the large-diameter portion 14a provided at one end is brought into contact with the outer surface portion of the one support portion 17, whereby the adjustment wheel 5 is fixed to the axle 14 (fixed shaft) with respect to the mounting base 3. ) In the axial direction, and is clamped and fixed by a bolt 13 in a both-sided manner.

  Each of the grinding wheel 4 and the adjustment wheel 5 is provided between the pulleys 10a and 15a of the rotary cylinders 10 and 15 and the pulleys 18a and 19a of the motors 18 and 19 disposed on the mounting bases 2 and 3, respectively. The wheel 18 and the adjustment wheel 5 are rotated by the motors 18 and 19 via the belt 20 that is hung, and the grinding wheel 4 and the adjustment wheel 5 loosen the bolts 13 of the support portions 12 and 17 that are fixed at both ends, and the belt 20 Since the grinding wheel 4 and the adjusting wheel 5 and the mounting bases 2 and 3 are configured in the same manner, the grinding wheel 4 and the adjusting wheel 5 The mounting bases 2 and 3 can be fixedly mounted.

  Further, each of the mounting base 2 of the grinding wheel 4 and the mounting base 3 of the adjusting wheel 5 is orthogonal to the respective axles 8 and 14 at the time of grinding by screw rods 22a and 22b rotated by drive motors 21a and 21b. In this example, the mounting table 2 of the grinding wheel 4 is provided with a cutting direction advance / retreat means that moves in the direction and cuts the workpiece w. On the side, there is provided lateral advancing / retreating means for moving the mounting base 2 in parallel with the axis of the axle 8 by a screw rod 24 rotated by a drive motor 23. The mounting base 3 of the other adjustment wheel 5 In some cases, a screw rod 24a that is rotated by the drive motor 23a is provided with a means for moving the shaft parallel to the axis of the axle 14.

  Further, the mounting bases 2 and 3 of the centerless grinding machine A are dressed in a rotary type or a bite type in dressing means for correcting the surface condition and shape of the grinding wheel 11 of the grinding wheel 4 and the adjusting wheel 16 of the adjustment wheel 5. The tool is configured to be detachably attached.

  The rotary dressing tool B in this example is fixed to the support portions 12 and 17 of the mounting bases 2 and 3 in the grinding wheel 4 and the adjustment wheel 5, and the gripping portions 25 c having the same diameter as both ends of the axles 8 and 14. A rotating cylinder 27 is rotatably fitted on the outer periphery of the shaft 25 via a bearing 26, and the outer periphery of the rotating cylinder 27 is for rotational movement near one end. A rotary dresser 28 having a correcting blade is fixed at a central portion thereof, and a large-diameter portion 25a is provided at one end of the shaft 25.

  According to the example in which the rotary dressing tool B is arranged on the mounting base 3 on the adjustment wheel 5 side shown in FIGS. 4 and 5, the inner flange surface portion 25b of the large-diameter portion 25a formed at one end of the shaft 25 is provided. Abutting on the outer surface portion of one support portion 17, the outer peripheral surfaces of both end gripping portions 25 c of the shaft 25 are clamped and fixed with bolts 13 while being sandwiched between the semicircular receiving portions of the respective support portions 17. The belt 20 is hung between the pulley 27a for rotation and the pulley 19a of the motor 19, and the rotary dresser 28 is rotated by the motor 19 and can be removed by loosening the bolt 13.

  The rotary dressing tool B is a double-supported shaft fixing type in which both-end gripping portions 25c of the shaft 25 are fixed to the support portions 17 of the mounting base 3 in a double-supported manner, as shown in FIG. A rotary dress tool B ′ of a cantilever type fixed shaft type may be used.

This rotary dressing tool B ′ has a large-diameter portion 29a formed at one end of the short shaft 29, and a bearing 30 on the outer periphery from the grip portion 29b following the large-diameter portion 29a to the other end. The rotary cylinder 31 is fitted, and the rotary cylinder 31 is provided with a pulley portion 31a for rotational movement at one end portion in the direction of the grip portion 29a of the short shaft 29, and a correction blade is provided at the other end portion. A structure in which a rotary dresser 28 provided around is fixed, and is fixed in a cantilever manner to one support portion 17 on the pulley 19a side of the motor 19 in both support portions 17 and 17 of the mounting base 3. It is.
If a grinding wheel or an adjustment grindstone is provided in place of the rotary dresser 28, a cantilever type shaft-fixed type grinding wheel or an adjustment wheel is configured.

The bite type dressing tool C is a mode in which a bite 33 such as a single stone diamond or a multi-stone bond type is held by a holder 34, and as shown in FIG. 8, as shown in FIG. In addition to means for fastening and fixing the bolts 13 with the bolts 13 in a state of being sandwiched between the support portions 17 and 17 of the mounting base 3 on the adjustment wheel 5 side, the bite 33 other than the shaft support portion of the mounting base 3 by another type of holder. There is also an aspect that is attached to the location.
Of course, as described above, since both mounting bases 2 and 3 are configured in the same manner, each dressing tool B, B ', C can be arranged on the mounting base 2 on the grinding wheel 4 side in the same manner. .

  The centerless grinding machine A places the workpiece w on the blade 7 and rotates the grinding wheel 4 and the adjustment wheel 5 through the belt 20 from the motors 18 and 19 on the mounting bases 2 and 3. Grinding in the grinding wheel 4 while controlling the grinding wheel 4 and the adjusting wheel 5 in the cutting direction according to the processing mode such as the size of the workpiece w by the screw rods 22a and 22b rotated by the drive motors 21a and 21b. The peripheral surface of the workpiece w is ground by the rotational grinding force of the grindstone 11.

  When the dressing (truing) for correcting the surface condition and shape of the grinding wheel 11 of the grinding wheel 4 and the adjusting wheel 16 of the adjustment wheel 5 is the rotary dress tool B, (B ′), the blade 7 and the rotary dress tool B , (B ′), the blade 7 is moved, the adjustment wheel 5 is removed from the adjustment vehicle side mounting base 3, and the dressing tool B, (B ′) provided with the rotary dresser 28 is removed. ) Is fixed, the grinding wheel 11 is in a dressing operation state in the grinding wheel 4 (FIG. 4).

  Then, the rotary dresser 28 is rotated by the motor 19 of the mounting base 3 on the adjustment wheel side, and the dressing tool B, by the drive motor 21a and the screw rod 22a in the cutting direction advance / retreat means of the mounting base 2 on the grinding wheel side. Movement control of the mounting base 2 in the (B ′) direction, that is, the cutting direction, and in the lateral direction along the dressing tool B, (B ′) by the drive motor 23 and the screw rod 24 in the lateral advance / retreat means. Then, the peripheral surface of the grinding wheel 11 is corrected (dressed) to a desired shape and surface state.

  Further, as shown in FIG. 7, it is a both-support type shaft fixing type fixed to each support portion 17 of the mounting base 3 on the adjustment vehicle 5 side, and is wider than the grinding wheel 11 of the opposing mounting base 2. In the embodiment in which the rotary dresser 28 'is disposed, the mounting base 2 is moved in the dressing tool direction by the drive motor 21a and the screw rod 22a in the cutting direction forward / backward moving means of the mounting base 2 on the grinding wheel side or on the adjustment wheel side. The grinding wheel 11 is corrected by controlling the movement of the mounting base 3 in the grinding wheel 4 direction, that is, in the cutting direction, by NC control or the like by the drive motor 21b and the screw rod 22b in the cutting direction advance / retreat means of the mounting base 3 of FIG.

  The dressing operation of the adjusting wheel 16 in the adjusting wheel 5 is performed by removing the grinding wheel 4 from the mounting base 2 on the grinding wheel side and fixing the rotary dressing tools B and (B ′) thereto. The mounting table 2, that is, the dressing tool B, (B ') is moved and controlled by the cutting direction advance / retreat means and the lateral advance / retreat means of the mounting table 2 on the grinding wheel side to correct the peripheral surface of the adjusting grindstone 16 (dressing) )

  In dressing (truing) with the bite type dressing tool C, the blade 7 is moved to avoid interference with the bite type dressing tool C, and the adjustment wheel 5 is removed from the mounting base 3 on the adjustment wheel side, By fixing the bite type dressing tool C to the mounting base 3, the grinding wheel 11 is put into a dressing operation state in the grinding wheel 4 (FIG. 8).

  The grinding wheel 4 is rotated by the motor 18 in the grinding wheel side mounting base 2 via the belt 20, and the cutting direction advance / retreat means and the lateral direction advance / retreat means of the grinding wheel side mounting base 2 are the same as described above. The mounting table 2 is moved and controlled to correct (dressing) the peripheral surface of the grinding wheel 11, and the same applies to the case where the adjusting wheel 16 of the adjusting wheel 5 is corrected.

  In the dressing operation using the rotary dressing tools B and B ′ and the bite dressing tool C, not only the movement control of the mounting base 2 on the grinding wheel side but also the cutting direction advance / retreat means of the mounting base 3 on the adjustment wheel side. A dressing operation can also be performed by operating the drive motor 21b and the screw rod 22b and the drive motor 23a and the screw rod 24a serving as a laterally moving back and forth means.

  The dressing operation is a mode in which a rotary or bite type dressing tool B, B ', C is fixed to either the mounting base 2 or 3, but the grinding wheel 4 and its mounting base 2 and adjustment wheel 5 Since the mounting base 3 has the same configuration as described above, in the aspect of dressing the grinding wheel 11 of the grinding wheel 4, the grinding wheel 4 that has finished dressing is removed from the mounting base 2, and this grinding wheel The adjustment wheel 5 can be fixed to the mounting base 2 on the side, and the adjustment grindstone 16 in the adjustment wheel 5 can also be dressed, and the same applies to the reverse mode.

  In this example, since the grinding wheel 4 and the adjustment wheel 5 and their mounting bases 2 and 3 have the same configuration as described above, the grinding wheel 4 or the adjustment wheel 5 is mounted on either of the mounting bases 2 and 3. It is possible to mount the dressing tools B, B 'and C on each of the mounting bases 2 and 3, but only one mounting base, for example, the mounting base 3 on the adjustment vehicle 5 side only The rotary dressing tool B is configured to be disposed, and the grinding wheel 11 of the other grinding wheel 4 on the other side is dressed by the rotary dressing tool B attached to the mounting base 3 on the adjusting wheel 5 side. Then, when dressing the adjusting wheel 16 of the adjusting wheel 5, it is conceivable to adopt means by a bite-type dressing tool C attached to the mounting base 2 on the grinding wheel 4 side.

  The following shows a dressing device in a centerless grinding machine equipped with a mounting base of another example configuration for an adjusting wheel and its mounting base example, and those having the same functions as those of the previous embodiment are denoted by the same reference numerals. The description may be omitted.

Example 2
Reference numeral 50 in FIG. 9 indicates a mounting base on the adjustment wheel side similar to that in the centerless grinding machine A of the previous embodiment. The mounting base 50 includes a pair of support portions 51 and 52 arranged at intervals, and A fixed shaft 53 that is supported between both support portions 51 and 52 in a state where both ends are supported in a supported manner, and an outer periphery of the fixed shaft 53 is rotatably fitted via a bearing 54. A rotating cylinder 55 is provided.

  The fixed shaft 53 is supported near one end 53a by one support portion 51, and the one end 53a projects from the one support portion 51 in a direction perpendicular to the axis. It is pivotally supported by the support shaft 56, and the fixed shaft 53 can swing by this.

  Further, the free end 53b, which is the other end side of the fixed shaft 53, is received and supported by the receiving side 52a of the other support portion 52 configured in a split shape, and is tightened in a state of being sandwiched from above by the lid side 52b. The bolt 13 is detachably fixed so that the shaft end portions 53a and 53b of the fixed shaft 53 are fixed in a supported manner by the support portions 51 and 52 of the mounting base 50.

  The rotating cylinder 55 is provided with a pulley portion 55a that rotates the rotating cylinder 55 on the outer peripheral surface of the fixed shaft 53 in the direction of the pivot end 53a, and on the outer peripheral surface of the free end 53b. A mounting portion 55b is provided.

  The mounting portion 55b includes a mounting flange portion 55c provided around the substantially central portion of the rotating cylinder 55, and a mounting peripheral surface portion 55d serving as an outer peripheral surface in the direction of the free end 53b of the fixed shaft 53, and the mounting flange portion 55c. A plurality of mounting screw holes 55e arranged on concentric circles are provided on the side surface portion.

  The mounting base 50 is configured such that an adjustment wheel 57, a rotary dress tool 58, and a grindstone wheel, which are rotary tools, are mounted on the mounting peripheral surface portion 55d of the rotary cylinder 55.

  The adjustment wheel 57 has an adjustment grindstone 57c provided around the outer periphery of a cylindrical body 57b having a fitting center hole 57a fitted to the mounting peripheral surface portion 55d of the rotating cylinder 55, and the cylindrical body 57b includes A plurality of mounting holes 57d that are aligned with the mounting screw holes 55e of the mounting flange portion 55c are provided.

  In order to mount the adjustment wheel 57 on the mounting base 50, the belt 20 hung on the pulley portion 55a of the rotating cylinder 55 is removed, and the free end 53b side is lifted with the support shaft 56 on the pivot end 53a side as a fulcrum. The fitting center hole 57a of the adjustment wheel 57 is fitted to the mounting peripheral surface portion 55d of the rotating cylinder 55 so that the mounting hole 57d and the mounting screw hole 55e of the mounting flange portion 5c are aligned, and the mounting bolt 59 is passed through this. Tightening and fixing are performed, and the free end 53b side is fixed by the tightening bolt 13 with the receiving side 52a and the lid side 52b of the support portion 52 sandwiched.

  Even if it is on the grinding wheel, it has the same configuration as that of the adjusting wheel 57, and mounting on the mounting base is also performed by the same operation.

  The dressing means for the adjusting wheel 57 mounted on the mounting base 50 and the grinding wheel mounted on the opposing mounting base is a rotary dressing tool in addition to the bite type dressing tool C in the first embodiment that is mounted on the mounting base 50. 58, the rotary dressing tool 58 has a cylindrical body 58b fixed to a rotary dresser 58c around which a correction blade is provided at a side surface portion of the cylindrical body 58b having a fitting center hole 58a. Are provided with a plurality of mounting holes 58d (FIG. 8B). For example, when dressing a grinding wheel mounted on an opposing mounting base, an adjustment wheel 57 mounted on the mounting base 50 is provided. The rotary dress tool 58 is attached by the same operation as described above, and is removed by the reverse operation.

Example 3
The mounting base 70 shown in FIG. 10 is a form in which a both-end type shaft rotation type grinding wheel or adjustment wheel is mounted. This both-end support type shaft rotation type adjustment wheel 71 (the same applies to the grinding wheel) is one of the axles 72. A support cylinder 74 is fitted around each end and the other end via a bearing 73, and an attachment collar 75 is formed at a position between the two support cylinders 74 of the axle 72. A ring-shaped adjusting wheel 76 (hereinafter referred to as “adjusting wheel” or “grinding wheel”) is fastened and fixed by a mounting bolt 78 in a state of being sandwiched between mounting wheels 77, and a worm wheel 79 is fixed to the other end of the axle 72. It is what has been.

  The mounting base 70 includes support parts 80 and 80 each having a split structure. With the support parts 80 and 80, the support cylinders 74 at both end portions of the axle 72, which serve as gripping parts in the adjustment wheel 71, are both supported. The worm wheel 79 is meshed with a worm 81 communicating with a drive source, and the adjusting grindstone wheel 76 is rotated with the rotation of the axle 72.

  A rotary dressing tool 82 for dressing the grinding wheel of the grinding wheel attached to the mounting base 70 and the adjusting grinding wheel 76 of the adjustment wheel 71 is configured in the same manner as the adjustment wheel 71, and has a mounting flange 75 of the axle 72. The fixing wheel 77 is clamped and fixed in a state where the rotary dresser wheel 83 around which the correction blade is provided is sandwiched (FIG. 9B), for example, the adjustment wheel 71 attached to the mounting base 70 is removed, The support cylinders 74 and 74, which are the gripping portions of the rotary dress tool 82, are fixedly attached to the support portions 80 and 80 so as to be held in a supported manner, and the grinding wheel of the grinding wheel of the mounting base facing the rotary dress tool 82 is corrected. .

Example 4
A mounting base 90 shown in FIG. 11 is a form in which a cantilevered shaft rotation type grinding wheel or adjustment wheel is attached, and a shaft 92 having one end projecting from a support portion 91 of the mounting base 90 through a bearing 93 is provided. A pulley for rotation (not shown) is fixed to the other end of the shaft 92, and a taper shaft portion 92a for mounting the rotary tool and a mounting screw hole 92b on the shaft center line are fixed to the protruding end. Is provided.

  And the adjustment wheel 94 here is the same as the grinding wheel, and the adjustment wheel 96 is provided around the outer periphery of the support wheel 95 having the fitting center taper hole 95a to be fitted to the mounting taper shaft portion 92a. The fitting center taper hole 95 a is fitted into the mounting taper shaft portion 92 a of the shaft 92, and is fastened and fixed with a mounting screw 97.

  A rotary dress tool 98 for dressing the grinding wheel of the grinding wheel mounted on the mounting base 90 and the adjusting wheel 96 of the adjusting wheel 94 is configured in the same manner as the adjusting wheel 94. A rotary dresser wheel 99 around which a correction blade is provided is disposed (FIG. 10B). For example, the adjustment wheel 94 attached to the mounting base 90 is removed, and the rotary wheel is rotated by the same operation as described above. A dressing tool 98 is mounted to correct the grinding wheel of the grinding wheel mounted on the opposite mounting base.

  In Embodiments 2 to 4, the rotary dressing tool is mounted on the mounting base. Of course, it is also possible to attach a bite dressing tool. The mounting base and the mounting base on the adjustment wheel side have the same configuration, and the mounting tool can be mounted on either mounting base, but the dressing tool can be mounted on only one of the mounting bases. In addition, there may be a case where the mounting table on the grinding wheel side and the mounting table on the adjustment wheel side have different configurations.

  The dressing apparatus in the centerless grinding machine of the first to fourth embodiments can attach a grinding wheel having a grinding wheel and an adjusting wheel having an adjustment wheel to either mounting base, and one of both mounting bases. It is possible to arrange a dressing tool for each of them, and it is possible to dress a dressing tool on one mounting base and dress a grinding wheel or adjusting grinding wheel on the other mounting base. There is no need to provide a separate drive mechanism for dressing, and it is not only easy to work by simply placing a dressing tool on one of the mounting bases, but also because the structure is simple and downsized, and the cost is low, it is economical. is there.

A simplified plan view of a centerless grinding machine. A simplified front view of a centerless grinding machine. The cross-sectional top view of a mounting base. The simplified top view of the centerless grinding machine which shows the state which has arrange | positioned the rotary type dress tool to the mounting stand by the side of an adjustment vehicle. FIG. 5 is a cross-sectional plan view of the mounting base in FIG. 4. The cross-sectional top view which shows the state which has arranged the cantilever type rotary dressing tool on the mounting base. The simplified top view of the centerless grinding machine which shows the state which has arrange | positioned the wide rotary type dress tool to the mounting stand by the side of an adjustment vehicle. The simplified top view of the centerless grinder which shows the state which has arrange | positioned the bite-type dress tool to the mounting stand by the side of an adjustment vehicle. Sectional front view (a) of the mounting base in the 2nd Example with which the adjustment wheel was mounted | worn, and front view (b) of a rotary type dress tool. Sectional front view (A) of a mounting base and a sectional front view (B) of a rotary dressing tool in a third embodiment to which a dual-support type shaft rotation type adjustment wheel is attached. Sectional front view (a) of a mounting base and a front view (b) of a rotary dressing tool in a fourth embodiment to which an adjustment wheel of a cantilever type shaft rotation type is attached.

Explanation of symbols

A Centerless grinding machine B, B 'Rotary dressing tool C Tool bite dressing tool w Work material 1 Machine base 2, 3 Mounting base 4 Grinding wheel 5 Adjustment wheel 8, 14, 25 Axle 8c14c, 25c, 29b Grip part 10, 15 , 27, 31 Rotating cylinder 11 Grinding wheel 12, 17 Support section 16 Adjusting wheel 28 Rotary dresser 29 Short shaft 33 Bite 50 Mounting base 51, 52 Support section 53 Fixed shaft 53b Free end 55 Rotating cylinder 55b Mounting section 56 Support shaft 57 Adjustment wheel 57a Insertion center hole 57c Adjustment grindstone 58 Rotary dressing tool 58a Insertion center hole 70 Mounting base 71 Adjustment wheel 72 Axle 74 Support cylinder 75 Mounting flange 76 Adjustment grindstone wheel 77 Mounting wheel 80 Supporting part 82 Rotary dress Tool 83 Rotary dresser wheel 90 Mounting base 91 Support section 92 Shaft 92a Mounting taper shaft section 94 Adjusting wheel 95 Supporting wheel 95a Insertion center taper hole 96 Adjustment whetstone 98 Rotary dress tool 99 Rotary dresser wheel

Claims (5)

In a centerless grinding machine in which a mounting base having a grinding wheel and a mounting base having an adjustment grindstone are disposed to face each other, and a workpiece on the blade disposed therebetween is ground by the rotational grinding force of the grinding wheel. ,
At least one of the two mounting bases is configured to be able to attach and detach a rotary or bite type dressing tool for dressing instead of the grinding wheel or the adjustment grindstone,
A dressing method in a centerless grinding machine, characterized in that a grinding wheel or an adjustment grindstone of the other mounting base is dressed by a rotary or bite type dressing tool attached to one of the mounting bases. In a centerless grinding machine in which a mounting base having a grinding wheel and a mounting base having an adjustment grindstone are disposed to face each other, and a workpiece on the blade disposed therebetween is ground by the rotational grinding force of the grinding wheel. ,
At least one of the two mounting bases can be attached or detached with a rotary or bite type dressing tool for dressing the grinding wheel or the adjusting grindstone of the other mounting base instead of the grinding wheel or the adjusting grindstone. A dressing device in a centerless grinding machine, characterized in that it is configured. At least one of the two mounting bases is
A support portion for supporting the grinding wheel having the grinding wheel or the adjusting wheel having the adjusting wheel in a double-sided or cantilever shape;
The dressing apparatus for a centerless grinding machine according to claim 2, wherein the rotary dressing tool includes means that is supported by the support portion in a both-sided or cantilevered manner. At least one of the two mounting bases is
A support portion that pivotally supports one end of the fixed shaft, a support portion that fixes the other free end of the fixed shaft, and a grindstone wheel having a grinding wheel or an adjustment wheel having an adjustment grindstone are attached and detached. A mounting portion provided rotatably on the fixed shaft,
The dressing apparatus in the centerless grinding machine according to claim 2, wherein the rotary dressing tool includes means for mounting on the mounting portion. 5. The dressing apparatus for a centerless grinding machine according to claim 3, wherein the other mounting base is provided with a bite type dressing tool.

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