JP2005059194A - Grinding wheel and shape finishing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grinding wheel and a shape grinding machine which is easily manufactured, capable of performing rough-finishing and final finishing of inner and outer circumferential surfaces of a disk with a simple configuration, simplifying the steps, and shortening the grinding work. <P>SOLUTION: In the grinding wheel 110, a disk is simultaneously abutted on tapered surfaces of a recessed portion 111a and a projecting portion 112a and ground step by step, and finally and simultaneously abutted on a rough-finished surface 111b of an outer circumferential surface and a rough-finished surface 112b of an inner circumferential surface and ground during the rough finishing. Further, during the final finishing, an outer circumferential surface finishing groove 111c (or 111d, 111e) grinds the outer circumferential surface of the disk to form the outer circumferential surface together with an edge portion, and an inner circumferential surface finishing groove 112c (or 112d, 112e) is abutted on the inner circumferential surface of the disk to form the inner circumferential surface together with the edge portion. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a grinding wheel and a shape processing machine for grinding an inner and outer peripheral surface of an annular (doughnut-shaped) hard disk.

  A hard disk is formed by forming a magnetic thin film on a glass plate which is a brittle material, for example, and is hard. When grinding the inner and outer peripheral surfaces of such hard disks, grinding wheels used for grinding hard materials (for example, diamond electrodeposited grinding wheels (grinding stones with diamond particles electrodeposited on the surface of a metal)) As a result, the inner and outer peripheral surfaces of the hard disk are ground.

  As a prior art of an apparatus for processing the inner and outer peripheral surfaces of a hard disk, for example, the invention of Patent Document 1 (title of invention: grinding tool for donut-shaped substrate) is disclosed.

Japanese Patent No. 3099216 (paragraph number 0023 to paragraph number 0041, FIGS. 1 to 10)

  Now, as described above, the hard disk is hard, and when grinding is performed from the beginning using a finishing grinding wheel, it takes time to complete the grinding. Therefore, the inner peripheral surface and the outer peripheral surface of the hard disk are first ground to a certain extent by rough finishing, and then the finishing is performed to increase the grinding speed.

  However, in the invention described in Patent Document 1, it is necessary to form annular recesses having different particle sizes for rough finishing and finishing, and there is a problem that manufacturing is complicated.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a grinding wheel that is easy to manufacture and that can perform both rough finishing and finishing of the inner and outer peripheral surfaces of the disk with a simple configuration. There is to do. Another object of the present invention is to provide a shape processing machine equipped with such a grinding wheel so as to simplify the number of steps and shorten the grinding process.

The grinding wheel of the present invention is
A grinding wheel that is a polishing tool for chamfering the inner peripheral surface and the outer peripheral surface of the disk, and the edge portion of the inner peripheral surface and the outer peripheral surface,
A cylindrical outer peripheral grinding wheel having a grinding surface formed in a tapered shape on the inner peripheral wall of the frustoconical recess with respect to the rotation axis;
A cylindrical inner peripheral grinding wheel having a grinding surface that is formed in a concave portion of the outer peripheral grinding stone and is a tapered outer peripheral wall of a frustoconical convex portion with respect to the rotation axis;
An inner peripheral rough finish surface formed on the inner peripheral grindstone for rough finishing of the inner peripheral surface of the disk;
The outer peripheral surface rough finish surface formed on the outer peripheral grindstone for rough finishing of the outer peripheral surface of the disk,
An inner peripheral surface finishing groove having a cross angle finishing surface for chamfering the inner peripheral end surface edge in addition to the inner peripheral end surface finishing surface for finishing the inner peripheral surface of the disk;
In addition to the outer peripheral end surface finished surface for finishing the outer peripheral surface of the disc, an outer peripheral surface finished groove having a cross angle finished surface for chamfering the outer peripheral end surface edge portion,
A grinding fluid inlet formed on the inner and outer peripheral grinding wheels;
A grinding fluid supply hole provided in the recess and communicating with the grinding fluid introduction portion;
With
The outer peripheral surface rough finish surface of the inner peripheral wall of the concave portion of the outer peripheral grindstone, and the inner peripheral surface rough finish surface of the outer peripheral wall of the convex portion of the inner peripheral grindstone are formed concentrically in the same plane,
The outer peripheral surface finishing groove of the inner peripheral wall of the concave portion of the outer peripheral grinding stone, and the inner peripheral surface finishing groove of the outer peripheral wall of the convex portion of the inner peripheral grinding stone are formed concentrically in the same plane,
The concave portion of the outer peripheral grindstone is expanded toward the opening surface, and the convex portion of the inner peripheral grindstone is a grinding surface formed in a tapered shape so as to reduce the diameter toward the opening surface,
The final outer peripheral surface rough finish surface and inner peripheral surface rough finish surface are located farthest from the opening surface.

More specifically, the grinding wheel of the present invention is characterized in that the outer peripheral surface finishing groove and the inner peripheral surface finishing groove are formed in multiple stages.
Further, the outer peripheral whetstone and the inner peripheral whetstone are diamond electrodeposited whetstones in which diamond is electrodeposited.

Moreover, the grinding wheel of the present invention is the above grinding wheel,
The outer peripheral surface rough finish surface of the outer peripheral grindstone and the inner peripheral surface rough finish surface of the inner peripheral grindstone are formed substantially parallel to the rotation axis direction. Thus, when rough finishing is performed, the grinding wheel is vertically contacted with the disk surface, and the inner peripheral surface and the outer peripheral surface of the disk are simultaneously brought into contact with each other for grinding. The outer peripheral surface can be formed substantially parallel to the central axis of the disc.

Moreover, the grinding wheel of the present invention is the above grinding wheel,
When performing rough finishing simultaneously on the inner and outer peripheral surfaces of the disc, the tapered grinding surfaces of the concave portion of the outer peripheral grindstone and the convex portion of the inner peripheral grindstone are moved in a direction perpendicular to the disc surface. The outer peripheral surface rough finish surface and the inner peripheral surface rough finish surface are moved to rough finish of the inner peripheral surface and outer peripheral surface of the disc. Also, the inner peripheral surface and outer peripheral surface of the disc, and the inner and outer peripheral surfaces thereof When finishing the three edge portions of the surface at the same time, the outer peripheral surface finishing groove and the inner peripheral surface finishing groove grind the inner peripheral surface and outer peripheral surface of the disc while moving in the radial direction of the disc. And the inner and outer peripheral surfaces and the edge portions of the inner and outer peripheral surfaces can be processed simultaneously.

  In addition, the outer peripheral surface finishing groove of the outer peripheral grindstone and the inner peripheral surface finishing groove of the inner peripheral grindstone are formed in a substantially [character shape or substantially] character shape. When the inner peripheral surface finish groove grinds the inner peripheral surface of the disc, the inner peripheral surface and the edge portion of the inner peripheral surface are processed at the same time so as to abut and grind while approaching from the radial direction (horizontal direction) of the disc. Further, when the outer peripheral surface finishing groove grinds the outer peripheral surface of the disk, the outer peripheral surface and the edge portion of the outer peripheral surface are simultaneously processed. Thereby, an inner peripheral surface and an outer peripheral surface can be formed in substantially [character shape or abbreviated] character shape.

The shape processing machine of the present invention is
The grinding wheel according to any one of claims 1 to 3 is provided at the shaft end of the grinding wheel shaft, and an oscillation mechanism that repeats a minute vertical movement in the vertical direction with respect to the disk surface and a plurality of cuts in the vertical direction are provided. A vertical cutting mechanism that can be positioned in the groove is provided on a rotatable work shaft having a disk suction portion at the shaft end, and a horizontal cutting mechanism that provides cutting in the radial direction of the disk.

More specifically, the shape processing machine of the present invention is
The above grinding wheel at the shaft end of the grinding wheel shaft,
A grinding wheel shaft for rotating the grinding wheel;
A disk suction part for sucking the disk is formed at the shaft end, and a work shaft for rotating the disk,
A vertical cutting mechanism that raises and lowers the workpiece shaft to the position where the outer peripheral surface rough finish surface and inner peripheral surface rough finish surface are formed, or to the position where the outer peripheral surface finish groove and inner peripheral surface finish groove are formed;
A horizontal cutting mechanism for moving the workpiece axis horizontally;
It is characterized by providing.

  In addition, an oscillation mechanism that moves the workpiece axis up and down in a direction perpendicular to the disk surface (in the direction of the rotation axis of the workpiece axis) is provided. Although this vertical movement is a movement at a minute interval, a grinding fluid is introduced into the grinding surface to prevent an increase in grinding resistance due to clogging of the grindstone, and it is possible to eliminate chips.

Further, the shape processing machine of the present invention is the above shape processing machine,
The oscillation mechanism, vertical cutting mechanism, and horizontal cutting mechanism must be installed on the workpiece shaft side, installed on the grinding wheel shaft side, or distributed on the workpiece shaft side or grinding wheel shaft side. It is characterized by.

More specifically, the shape processing machine of the present invention is
Instead of the oscillation mechanism, a grinding wheel shaft side oscillation mechanism that moves the grinding wheel shaft up and down in the direction perpendicular to the disk surface (the direction of the rotation axis of the workpiece shaft) may be provided.
Instead of the vertical cutting mechanism, the outer peripheral surface rough finish surface and the inner peripheral surface rough finish surface are the same height as the disc, or the outer peripheral surface finish groove and the inner peripheral surface finish groove are the same height as the disc. A grindstone shaft side vertical cutting mechanism for raising and lowering the grindstone shaft may be provided.
Moreover, it may replace with the said horizontal cutting mechanism, and you may make it provide the grindstone axis | shaft side horizontal cutting mechanism which transfers a grindstone axis | shaft to a horizontal direction.

Further, the shape processing machine of the present invention is the above shape processing machine,
Both the workpiece axis and the grindstone axis are characterized in that both axes are vertical, horizontal or inclined.

More specifically, the shape processing machine of the present invention is
The work shaft and the grindstone shaft may be substantially perpendicular to the ground surface.
Moreover, you may make it a workpiece | work axis | shaft and a grindstone axis | shaft be substantially horizontal with respect to the ground surface.
Further, the work shaft and the grindstone shaft may be inclined with respect to the ground surface.
That is, the rotation axis of the workpiece axis and the rotation axis of the grindstone axis may be formed so as to be substantially parallel.

According to the present invention as described above, it is possible to provide a grinding wheel which is easy to manufacture and can perform both rough finishing and finishing of the inner and outer peripheral surfaces of the disk with a simple configuration.
In addition, it is possible to provide a shape processing machine equipped with such a grinding wheel so as to simplify the number of processes and shorten the grinding process.

The best mode for carrying out the present invention will be described.
FIG. 1 is a configuration diagram of a shape processing machine 1000 according to the present embodiment.
As shown in FIG. 1, the shape processing machine 1000 of this embodiment is roughly divided into an upper mechanism unit 100 and a lower mechanism unit 200. Such a shape processing machine 1000 grinds the inner peripheral surface and the outer peripheral surface and chamfers the edge portions of the inner peripheral surface and the outer peripheral surface with respect to the disc (work) 300 before being processed into a hard disk.

More specifically, the upper mechanism unit 100 includes a grinding wheel 110, a grinding wheel shaft 120, a grinding wheel shaft mechanism 130, and a grinding wheel shaft motor 140.
The lower mechanism 200 includes a base 210, a horizontal cutting mechanism 220, a horizontal moving table 230, a vertical cutting mechanism 240, an oscillation mechanism 250, a work shaft 260, a work shaft motor 270, a belt 280, and a rotary joint 290.

The vertical cutting mechanism 240 includes a cutting shaft 241, a nut gear 242, a pinion 243, and a vertical cutting motor 244 in detail.
The oscillation mechanism 250 includes a vertical lever 251.
The work shaft 260 includes a pulley 261, a key 262, and a disk suction portion 263.
The work shaft motor 270 includes a pulley 271.

Next, the grinding wheel 110 will be described with reference to the drawings. FIG. 2 is a configuration diagram of the grinding wheel 110.
As shown in FIG. 2, the grinding wheel 110 includes an outer peripheral grinding stone 111, an inner peripheral grinding stone 112, a mounting screw 113, a grinding fluid introduction part 114, and a grinding fluid supply hole 115.
The outer peripheral grindstone 111 is formed with an opening surface 116 on the lower side and is provided with a truncated cone-shaped concave portion 111a by a taper. An outer peripheral surface rough finish surface 111b is provided on the inner peripheral wall of the concave portion 111a, and a three-step outer peripheral surface finish is performed. Grooves 111c, 111d, and 111e are formed.

Similarly, the inner peripheral grindstone 112 is formed in the concave portion 111a of the outer peripheral grindstone 111 and is provided with a truncated cone-shaped convex portion 112a by a taper. The outer peripheral wall of the convex portion 112a has an inner peripheral surface rough finish surface 112b. However, three stages of inner peripheral surface finishing grooves 112c, 112d, and 112e are further formed.
These outer peripheral grindstone 111 and inner peripheral grindstone 112 are diamond electrodeposited grindstones in which diamond is electrodeposited. The particle size of the diamond to be electrodeposited is not particularly limited. For example, diamond having the same particle size as a whole is electrodeposited so as not to increase the electrodeposition process. In this case, diamond having a fine particle diameter for finishing may be electrodeposited.
Further, the concave portion 111a of the outer peripheral grinding stone 111 is increased in diameter toward the opening surface 116, and the convex portion 112a of the inner peripheral grinding stone 112 is formed in a linear taper shape so as to be reduced in diameter toward the opening surface 116. The ground surface.

  A grinding liquid introducing portion 114 that is a hole is formed on the upper outer surface of the grinding wheel 110 (the outer peripheral wheel 111 and the inner peripheral wheel). A grinding fluid supply hole 115 is provided in the recess 111 a of the outer peripheral grinding stone 111. The grinding fluid introduction part 114 and the grinding fluid supply hole 115 communicate with each other, and the grinding fluid is supplied from the grinding fluid supply hole 115 into the recess 111a via the grinding fluid introduction part 114.

  In this grinding wheel 110, the outer peripheral surface rough finish surface 111b of the outer peripheral grindstone 111 and the inner peripheral surface rough finish surface 112b of the inner peripheral grindstone 112 are formed concentrically within the same plane. Thereby, at the time of rough finishing, the inner and outer peripheral surfaces of the disk 300 are simultaneously brought into contact with each other and can be ground at once.

  Further, the outer peripheral surface finishing grooves 111c, 111d, 111e of the concave portion 111a of the outer peripheral grinding stone 111 and the inner peripheral surface finishing grooves 112c, 112d, 112e of the convex portion 112a of the inner peripheral grinding stone 112 are also apparent from FIG. Thus, they are formed concentrically on the same plane. As a result, the grinding time can be shortened because the grinding of the inner and outer peripheral surfaces is completed only by moving the disk 300 in the horizontal direction (only in one direction) during finishing.

The outer peripheral surface finishing grooves 111c, 111d, and 111e and the inner peripheral surface finishing grooves 112c, 112d, and 112e are formed in multiple stages. Thereby, it is possible to select an optimal finishing groove.
FIG. 3 is an explanatory diagram of the finishing groove. In FIG. 3, the outer peripheral surface finishing groove 111d and the inner peripheral surface finishing groove 112d are taken as an example. However, the outer peripheral surface finishing groove 111d has an outer peripheral end surface finishing surface that is a surface substantially parallel to the rotation axis of the work shaft 260. Further, a cross angle finished surface is formed adjacent to both sides (upper and lower sides in FIG. 3) of the outer peripheral end face finished surface. The angle at which the upper and lower intersecting angle finished surfaces intersect is, for example, 90 ° (in other words, the intersecting angle finished surface is 45 ° with respect to the central axis of the disc). However, the value is not limited to such an angle, and various values can be adopted as the crossing angle.
Similarly, in the inner peripheral surface finishing groove 112d, an inner peripheral end surface finishing surface which is a surface substantially parallel to the rotation axis of the work shaft 260 is formed, and further, adjacent to both sides (upper and lower sides in FIG. 3) of the inner peripheral end surface finishing surface. As a result, an intersection angle finish surface is formed. The angle at which the upper and lower intersection angle finished surfaces intersect is, for example, 90 °. Various values can be adopted for the intersection angle.
The inner peripheral end face finished surface, the outer peripheral end face finished surface, and the crossing angle finished surface are formed in all of the outer peripheral face finished grooves 111c, 111d, and 111e and the inner peripheral face finished grooves 112c, 112d, and 112e.
The outer peripheral surface rough finish surface 111 b and the inner peripheral surface rough finish surface 112 b are located farthest from the opening surface 116.

Next, the operation of the shape processing machine 1000 during disk grinding will be described with reference to the drawings. 4-7 is explanatory drawing explaining operation | movement of the shape processing machine 1000. FIG.
The disk 300 is placed on the turntable at the tip of the work shaft 260. As shown in FIG. 1, a rotary joint 290 is provided at the lowermost end of the work shaft 260, and is connected to a vacuum pump (not shown) via an air tube (not shown). Even when the work shaft 260 is rotated by the rotary joint 290, the air tube does not move as it is. The flow path communicates with the rotary table 290 and the passage in the work shaft 260 to the disk suction portion 263 of the turntable. When the vacuum pump is operated, the disk 300 is placed on the turntable of the work shaft 260 by vacuum suction. Fixed. The disc 300 is centered so that there is no eccentricity.

Subsequently, the work shaft 260 is rotated. When the work shaft motor 270 is rotationally driven by a driver (not shown) as shown in FIG. 1, the driving force is transmitted through the pulley 271, the belt 280, the pulley 261, and the key 262, and the work shaft 260 is rotated at a constant rotational speed. Rotate.
Similarly, the grindstone shaft motor 140 rotates the grindstone shaft 120 via the grindstone shaft mechanism 130 to rotate the grindstone 110 (the state shown in FIG. 4). In this case, it is assumed that the grinding fluid is supplied from a grinding fluid supply unit (not shown).

  In such a state, the vertical cutting mechanism 240 moves up the workpiece shaft 260. Specifically, as shown in FIG. 1, the vertical cutting motor 244 rotates, the pinion 243 rotates, and the nut gear 242 that meshes with the pinion 243 rotates. The internal thread portion of the inner periphery of the nut gear 242 is screwed into the external thread portion of the outer periphery of the cutting shaft 241, and the cutting shaft 241 is moved upward by the rotation of the nut gear 242, and at the same time, the workpiece shaft 260 is moved upward. Move.

  As the work shaft 260 is raised, the disk 300 is rotated and raised, the outer peripheral side of the disk 300 is the outer peripheral surface rough finish surface 111b of the outer peripheral grindstone 111, and the inner peripheral side of the disk 300 is the inner periphery of the inner peripheral grindstone 112. At the same time as moving to the same height as the rough surface 112b, the abutment is started and grinding is started (as shown in FIG. 5). In this case, the grinding liquid discharged from the grinding liquid supply hole 115 is also supplied to the inner and outer peripheral surfaces of the disk 300. Thereby, the inner peripheral surface and the outer peripheral surface of the disk 300 are ground.

  The outer peripheral surface rough finish surface 111b of the outer peripheral grindstone 111 and the inner peripheral surface rough finish surface 112b of the inner peripheral grindstone 112 are formed substantially parallel to the rotation axis direction. When rough finishing is simultaneously performed on the inner circumferential surface and the outer circumferential surface of the disk 300, the grinding wheel 110 is brought into contact with the surface of the disk 300 in the vertical direction to perform grinding so that the inner circumferential surface of the disk 300 and The outer peripheral surface is formed substantially parallel to the rotation axis direction.

In addition, the vertical lever 251 is moved up and down by a minute interval by the oscillation mechanism 250 during grinding. The up / down lever 251 is loosely inserted into the groove at the lower end of the rotating work shaft 260, and the work shaft 260 also moves up / down following the up / down movement of the up / down lever 251.
This makes it possible to reliably introduce the grinding liquid into the outer peripheral surface rough finish surface 111b and the inner peripheral surface rough finish surface 112b. As a result, an increase in grinding resistance due to clogging of the grindstone can be prevented, and shavings can be reliably eliminated.

After the rough finishing, the workpiece shaft 260 and the disk 300 are lowered by the vertical cutting mechanism 240, the outer peripheral side of the disk 300 is the outer peripheral surface finishing groove 111c of the outer peripheral grinding wheel 111, and the inner peripheral side of the disk 300 is the inner peripheral side. The grindstone 112 moves to the same height as the inner peripheral surface finishing groove 112c (the state shown in FIG. 6).
Subsequently, the horizontal moving table 230 is moved by the horizontal cutting mechanism 220, and the work shaft 260 is also moved in the horizontal direction.

  Then, the disk 300 rotated by the work shaft 260 contacts the outer peripheral surface finishing groove 111c of the outer peripheral grinding wheel 111 of the grinding wheel 110 rotated by the grinding wheel shaft 120, and the outer peripheral surface of the disk 300 is ground simultaneously. The inner peripheral surface of the disk is ground in contact with the inner peripheral surface finishing groove 112c of the grindstone 112 (the state shown in FIG. 7).

  The outer peripheral surface finishing groove 111c of the inner peripheral wall of the concave portion 111a of the outer peripheral grinding stone 111 or the inner peripheral surface finishing groove 112c of the outer peripheral wall of the convex portion 112a of the inner peripheral grinding stone 112 is formed in a substantially letter shape or a substantially [character shape]. Has been. The disc moves from the radial direction (horizontal direction) of the disc and abuts on the outer peripheral surface finish groove 111c for grinding and simultaneously abuts on the inner peripheral surface finish groove 112c for grinding. Thereby, the outer peripheral surface finishing groove 111c simultaneously grinds the outer peripheral surface of the disc 300 and the edge portion of the outer peripheral surface, and the inner peripheral surface finishing groove 112c simultaneously applies the inner peripheral surface of the disc 300 and the edge portion of the inner peripheral surface. Grind. Accordingly, the inner peripheral surface or the outer peripheral surface is formed into a substantially “letter” shape or a substantially “letter shape” by horizontal cutting in one direction. As a result, the inner and outer peripheral surfaces of the disk are finished in a short time.

  In this case as well, the vertical lever 251 is moved up and down by a small interval by the oscillation mechanism 250 during grinding, so that the grinding liquid can be reliably introduced into the outer peripheral surface finishing groove 111c and the inner peripheral surface finishing groove 112c.

In place of the outer peripheral surface finishing groove 111c and the inner peripheral surface finishing groove 112c, the outer peripheral surface finishing groove 111d and the inner peripheral surface finishing groove 112d may be ground. Moreover, you may grind using the outer peripheral surface finishing groove | channel 111e and the inner peripheral surface finishing groove | channel 112e.
Which finishing groove to use is appropriately selected. Moreover, you may make it use all the finishing grooves one by one.

Next, another embodiment will be described with reference to the drawings. As shown in FIG. 2, the grinding wheel 110 shown in FIG. 2 is provided with an opening 116 at the lower side of the outer peripheral grinding stone 111, and has a truncated cone-shaped recess 111a by a linear taper, and an inner peripheral wall of the recess 111a. The outer peripheral surface rough finish surface 111b and three steps of outer peripheral surface finish grooves 111c, 111d, and 111e are formed.
Similarly, the inner peripheral grindstone 112 is provided in the concave portion 111a of the outer peripheral grindstone 111, and includes a frustoconical convex portion 112a by a linear taper. The outer peripheral wall of the convex portion 112a has an inner peripheral surface rough finish surface. 112b is further formed with three stages of inner peripheral surface finishing grooves 112c, 112d, and 112e.
The outer peripheral grindstone 111 and the inner peripheral grindstone 112 are diamond electrodeposited grindstones electrodeposited with diamond, and the entire surface including the tapered portion in the concave portion 111a and the entire surface including the tapered portion of the convex portion 112a are grindstones. This is a method of using a grinding wheel using

Next, the operation of the shape processing machine 1000 at the time of disc grinding with such a grinding wheel will be described with reference to the drawings. 8-11 is explanatory drawing explaining operation | movement of the shape processing machine 1000. FIG.
The disk 300 is placed on the turntable at the tip of the work shaft 260. A rotary joint 290 is provided at the lowermost end of the work shaft 260 and is connected to a vacuum pump (not shown) via an air tube (not shown). When the vacuum pump is operated, the work shaft 260 is attracted by vacuum suction. The disc 300 is fixed on the turntable. The disc 300 is centered so that there is no eccentricity.

Subsequently, the work shaft 260 is rotated. When the work shaft motor 270 is rotationally driven by a driver (not shown), the work shaft 260 rotates at a constant rotational speed.
Similarly, the grindstone shaft motor 140 rotates the grindstone shaft 120 via the grindstone shaft mechanism 130 to rotate the grindstone 110 (the state shown in FIG. 8). In this case, it is assumed that the grinding fluid is supplied from a grinding fluid supply unit (not shown).

In such a state, the vertical cutting mechanism 240 moves up the workpiece shaft 260.
As the work shaft 260 is raised, the disk 300 rotates and rises, the outer peripheral side of the disk 300 is the tapered surface of the concave portion 111a of the outer peripheral grinding wheel 111, and the inner peripheral side of the disk 300 is the convex portion 112a of the inner peripheral grinding stone 112. Grinding is started by simultaneously contacting the taper surface (in the state of FIG. 9). In this case, the grinding liquid discharged from the grinding liquid supply hole 115 is also supplied to the inner and outer peripheral surfaces of the disk 300. Thereby, the inner peripheral surface and the outer peripheral surface of the disk 300 are ground. For the sake of clarity, the inclination of the taper is shown with a large inclination angle in the drawing, but the inclination angle is actually sufficiently small (for example, 2 to 3 degrees). For this reason, the inner and outer circumferences are gradually ground as the disk 300 is raised. As it rises, the outer diameter of the disc 300 becomes smaller due to the taper of the concave portion 111a, and the inner diameter of the disc 300 becomes larger due to the taper of the convex portion 112a.

  The disc 300 is raised while performing such grinding, and the outer peripheral side of the disc 300 is the outer peripheral surface rough finish surface 111b of the outer peripheral grindstone 111, and the inner peripheral side of the disc 300 is the inner peripheral surface rough of the inner peripheral grindstone 112. The final rough finish grinding is performed by raising to the same height as the finished surface 112b (the state shown in FIG. 10). In this case, the grinding liquid discharged from the grinding liquid supply hole 115 is also supplied to the inner and outer peripheral surfaces of the disk 300. Thereby, the inner peripheral surface and the outer peripheral surface of the disk 300 are ground.

  The outer peripheral surface rough finish surface 111b of the outer peripheral grindstone 111 and the inner peripheral surface rough finish surface 112b of the inner peripheral grindstone 112 are formed substantially parallel to the rotation axis direction. When rough finishing is simultaneously performed on the inner circumferential surface and the outer circumferential surface of the disk 300, the grinding wheel 110 is brought into contact with the surface of the disk 300 in the vertical direction to perform grinding so that the inner circumferential surface of the disk 300 and The outer peripheral surface is formed substantially parallel to the rotation axis direction.

  In addition, the workpiece shaft 260 rotated by the oscillation mechanism 250 during grinding as shown in FIGS. 9 to 10 also moves up and down, and the tapered surfaces of the concave portions 111a and the convex portions 112b and the outer peripheral surface rough finish surface 111b. In addition, it is possible to reliably introduce the grinding fluid into the inner peripheral surface rough finish surface 112b. As a result, an increase in grinding resistance due to clogging of the grindstone can be prevented, and shavings can be reliably eliminated.

  After the rough finishing, the workpiece shaft 260 and the disk 300 are lowered by the vertical cutting mechanism 240, the outer peripheral side of the disk 300 is the outer peripheral surface finishing groove 111c of the outer peripheral grinding wheel 111, and the inner peripheral side of the disk 300 is the inner peripheral side. The grindstone 112 moves to the same height as the inner peripheral surface finishing groove 112c. Subsequently, the horizontal moving table 230 is moved by the horizontal cutting mechanism 220, and the work shaft 260 is also moved in the horizontal direction.

  Then, the disk 300 rotated by the work shaft 260 contacts the outer peripheral surface finishing groove 111c of the outer peripheral grinding wheel 111 of the grinding wheel 110 rotated by the grinding wheel shaft 120, and the outer peripheral surface of the disk 300 is ground simultaneously. The inner peripheral surface of the disk is ground in contact with the inner peripheral surface finishing groove 112c of the grindstone 112 (the state shown in FIG. 11).

  The outer peripheral surface finishing groove 111c of the inner peripheral wall of the concave portion 111a of the outer peripheral grinding stone 111 or the inner peripheral surface finishing groove 112c of the outer peripheral wall of the convex portion 112a of the inner peripheral grinding stone 112 is formed in a substantially letter shape or a substantially [character shape]. Has been. The disc moves from the radial direction (horizontal direction) of the disc and abuts on the outer peripheral surface finish groove 111c for grinding and simultaneously abuts on the inner peripheral surface finish groove 112c for grinding. Thereby, the outer peripheral surface finishing groove 111c simultaneously grinds the outer peripheral surface of the disc 300 and the edge portion of the outer peripheral surface, and the inner peripheral surface finishing groove 112c simultaneously applies the inner peripheral surface of the disc 300 and the edge portion of the inner peripheral surface. Grind. Accordingly, the inner peripheral surface or the outer peripheral surface is formed into a substantially “letter” shape or a substantially “letter shape” by horizontal cutting in one direction. As a result, the inner and outer peripheral surfaces of the disk are finished in a short time.

  Even during the inner and outer peripheral finishing, the upper and lower levers 251 are moved up and down by a minute interval during the grinding, so that the grinding liquid can be reliably introduced into the outer peripheral surface finishing groove 111c and the inner peripheral surface finishing groove 112c. Become.

In place of the outer peripheral surface finishing groove 111c and the inner peripheral surface finishing groove 112c, the outer peripheral surface finishing groove 111d and the inner peripheral surface finishing groove 112d may be ground. Moreover, you may grind using the outer peripheral surface finishing groove | channel 111e and the inner peripheral surface finishing groove | channel 112e.
Which finishing groove to use is appropriately selected. Moreover, you may make it use all the finishing grooves one by one.

  In the shape processing machine 1000 described above, the oscillation mechanism 250, the vertical cutting mechanism 240, and the horizontal cutting mechanism 220 have been described as being installed on the workpiece shaft 260 side. However, in place of the oscillation mechanism 250 of the shape processing machine 1000 shown in FIG. 1, the grinding wheel shaft side oscillation mechanism that moves the grinding wheel shaft 120 up and down in the direction perpendicular to the surface of the disk 300 (the rotation direction of the workpiece shaft 260) ( (Not shown) may be provided.

  Further, in place of the vertical cutting mechanism 240 of the shape processing machine 1000 shown in FIG. 1, the disk 300 and the positions where the outer peripheral surface rough finish surface 111b and the inner peripheral surface rough finish surface 112b are formed have the same height. Or, the grinding wheel shaft side vertical for raising and lowering the grinding wheel shaft 120 so that the disk 300 and the positions where the outer circumferential surface finishing grooves 111c, 111d, and 111e and the inner circumferential surface finishing grooves 112c, 112d, and 112e are formed have the same height. A cutting mechanism (not shown) may be provided.

Moreover, it may replace with the horizontal cutting mechanism 220 of the shape processing machine 1000 shown in FIG. 1, and you may make it provide the grindstone axis | shaft side horizontal cutting mechanism (not shown) which moves the grindstone axis | shaft 120 to a horizontal direction.
Also, these grinding wheel shaft side oscillation mechanisms (not shown), grinding wheel shaft side vertical cutting mechanism (not shown), grinding wheel shaft side horizontal cutting mechanism (not shown) are all provided on the grinding wheel shaft side, or It is good also as a shape processing machine scattered on the shaft side and the grindstone shaft side.

In the shape processing machine 1000 described above, both the workpiece shaft 260 and the grindstone shaft 120 are described as being substantially perpendicular to the ground surface.
However, the work shaft 260 and the grindstone shaft 120 may be substantially horizontal with respect to the ground surface. Further, the work shaft 260 and the grindstone shaft 120 may be inclined with respect to the ground surface.
That is, the rotation axis of the workpiece shaft 260 and the rotation axis of the grindstone shaft 120 may be substantially parallel.

  The present invention has been described above. With such a grinding wheel and a shape processing machine, the grinding efficiency can be improved.

It is a block diagram of the shape processing machine of the best form. It is a block diagram of a grinding wheel. It is explanatory drawing of a finishing groove | channel. It is explanatory drawing explaining operation | movement of a shape processing machine. It is explanatory drawing explaining operation | movement of a shape processing machine. It is explanatory drawing explaining operation | movement of a shape processing machine. It is explanatory drawing explaining operation | movement of a shape processing machine. It is explanatory drawing explaining operation | movement of a shape processing machine. It is explanatory drawing explaining operation | movement of a shape processing machine. It is explanatory drawing explaining operation | movement of a shape processing machine. It is explanatory drawing explaining operation | movement of a shape processing machine.

Explanation of symbols

1000: Shape processing machine 100: Upper mechanism 110: Grinding wheel 111: Outer peripheral wheel 111a: Concave portion 111b: Outer surface rough finish surface 111c: Outer surface finish groove 111d: Outer surface finish groove 111e: Outer surface finish groove 112: Inside Circumferential grindstone 112a: convex portion 112b: inner peripheral surface rough finish surface 112c: inner peripheral surface finish groove 112d: inner peripheral surface finish groove 112e: inner peripheral surface finish groove 113: mounting screw 114: grinding fluid introduction section 115: grinding fluid Supply hole 116: Opening surface 120: Grinding wheel shaft 130: Grinding wheel shaft mechanism 140: Grinding wheel shaft motor 200: Lower side mechanism unit 210: Base 220: Horizontal cutting mechanism 230: Horizontal moving table 240: Vertical cutting mechanism 241: Cutting shaft 242: Nut gear 243: Pinion 244: Vertical cutting motor 250: Oscillation mechanism 251: Up / down lever 260: Over click shaft 261: pulley 262: Key 263: disk suction unit 270: workpiece axis motor 271: pulley 280: belt 290: rotary joint 300: disk (work)

Claims (6)

A grinding wheel that is a polishing tool for chamfering the inner peripheral surface and the outer peripheral surface of the disk, and the edge portion of the inner peripheral surface and the outer peripheral surface,
A cylindrical outer peripheral grinding wheel having a grinding surface formed in a tapered shape on the inner peripheral wall of the frustoconical recess with respect to the rotation axis;
A cylindrical inner peripheral grinding wheel having a grinding surface that is formed in a concave portion of the outer peripheral grinding stone and is a tapered outer peripheral wall of a frustoconical convex portion with respect to the rotation axis;
An inner peripheral rough finish surface formed on the inner peripheral grindstone for rough finishing of the inner peripheral surface of the disk;
The outer peripheral surface rough finish surface formed on the outer peripheral grindstone for rough finishing of the outer peripheral surface of the disk,
An inner peripheral surface finishing groove having a cross angle finishing surface for chamfering the inner peripheral end surface edge in addition to the inner peripheral end surface finishing surface for finishing the inner peripheral surface of the disk;
In addition to the outer peripheral end surface finished surface for finishing the outer peripheral surface of the disc, an outer peripheral surface finished groove having a cross angle finished surface for chamfering the outer peripheral end surface edge portion,
A grinding fluid inlet formed on the inner and outer peripheral grinding wheels;
A grinding fluid supply hole provided in the recess and communicating with the grinding fluid introduction portion;
With
The outer peripheral surface rough finish surface of the inner peripheral wall of the concave portion of the outer peripheral grindstone, and the inner peripheral surface rough finish surface of the outer peripheral wall of the convex portion of the inner peripheral grindstone are formed concentrically in the same plane,
The outer peripheral surface finishing groove of the inner peripheral wall of the concave portion of the outer peripheral grinding stone, and the inner peripheral surface finishing groove of the outer peripheral wall of the convex portion of the inner peripheral grinding stone are formed concentrically in the same plane,
The concave portion of the outer peripheral grindstone is expanded toward the opening surface, and the convex portion of the inner peripheral grindstone is a grinding surface formed in a tapered shape so as to reduce the diameter toward the opening surface,
A grinding wheel characterized in that the final rough surface of the outer peripheral surface and the rough surface of the inner peripheral surface are located farthest from the opening surface. In the grinding wheel according to claim 1,
An outer peripheral surface rough finish surface of an outer peripheral grindstone and an inner peripheral surface rough finish surface of an inner peripheral grindstone are formed substantially parallel to a rotation axis direction. In the grinding wheel according to claim 2,
When performing rough finishing simultaneously on the inner and outer peripheral surfaces of the disc, the tapered grinding surfaces of the concave portion of the outer peripheral grindstone and the convex portion of the inner peripheral grindstone are moved in a direction perpendicular to the disc surface. The outer peripheral surface rough finish surface and the inner peripheral surface rough finish surface are moved to rough finish of the inner peripheral surface and outer peripheral surface of the disc. Also, the inner peripheral surface and outer peripheral surface of the disc, and the inner and outer peripheral surfaces thereof When finishing the three edge portions of the surface at the same time, the outer peripheral surface finishing groove and the inner peripheral surface finishing groove grind the inner peripheral surface and outer peripheral surface of the disc while moving in the radial direction of the disc. A grinding wheel characterized in that the inner peripheral surface, the outer peripheral surface, and the edge portions of the inner and outer peripheral surfaces can be processed simultaneously.   The grinding wheel according to any one of claims 1 to 3 is provided at the shaft end of the grinding wheel shaft, and an oscillation mechanism that repeats a minute vertical movement in the vertical direction with respect to the disk surface and a plurality of cuts in the vertical direction are provided. A shape processing machine comprising: a vertical cutting mechanism that can be positioned in a groove; and a horizontal cutting mechanism that has a disk suction portion at a shaft end and is rotatable on a work shaft and that cuts in a radial direction of the disk. In the shape processing machine according to claim 4,
The oscillation mechanism, vertical cutting mechanism, and horizontal cutting mechanism must be installed on the workpiece shaft side, installed on the grinding wheel shaft side, or distributed on the workpiece shaft side or grinding wheel shaft side. Shape processing machine characterized by In the shape processing machine according to claim 4 or 5,
A shape processing machine characterized in that both the workpiece axis and the grindstone axis are vertical, horizontal or inclined.

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