JP3142766U7 - - Google Patents

Description

Support jig for cylindrical or cylindrical grinding bodies

The present invention provides a grinding wheel that is rotated by a rotary drive device on the outer peripheral surface of a grinding body made of a cemented carbide compact, a pre-sintered body, or a sintered body formed into a columnar shape or a cylindrical shape. The present invention relates to a supporting jig useful for grinding.

Conventionally, a lathe has been widely used to grind the outer peripheral surface of a cylindrical or cylindrical grinding body. In order to grind the outer peripheral surface of a cylindrical or cylindrical grinding body using a lathe, for example, one end side of the grinding body is fixed to the chucking means and rotated, and the outer circumference of the grinding body in this rotated state is rotated. Grind the surface with a tool.

To grind the outer peripheral surface of a cylindrical or cylindrical grinding body with high accuracy, or to grind the outer peripheral surface of the grinding body to obtain a cylindrical or cylindrical grinding body with high accuracy, the grinding body is rotated. It is necessary to support the center with high accuracy. Therefore, a jig for supporting the rotation center of the grinding body with high accuracy is used. There exists a thing as described in Unexamined-Japanese-Patent No. 2005-59182 (patent document 1) as this kind of jig | tool. JP-A-2005-59182

By the way, since the lathe grinds the outer peripheral surface of the rotating grinding body from one end side to the other end side using a cutting tool, the processing time varies depending on the size of the grinding body . For example, the processing time becomes longer as the total length becomes longer or thicker. Further, in order to grind the outer peripheral surface of a cylindrical or cylindrical grinding body, a lathe is designed to chuck one end of the grinding body with chucking means, so that it takes time to attach and detach the grinding body. The processing efficiency is not good enough. Further, the cemented carbide powder compact and the pre-sintered body have insufficient mechanical strength, and are damaged when chucked by the chucking means. Further, in order to chuck the chucking means, it is necessary to provide a grip margin on the grinding body, which causes a problem that the yield rate is low.

Further, the jig as described in Patent Document 1, the configuration is complicated, detachable operation of the grinding body is complicated, it is difficult to perform good grinding efficiency.

The present invention is in the form capable of performing a grinding of the outer peripheral surface of the cylindrical or cylindrical grinding body efficiently, moreover, it allows to perform grinding without significantly affecting the size of the grinding bodies An object of the present invention is to provide a jig for supporting a grinding body.

In addition, the present invention is capable of grinding with good yield by protecting the grinding body such as compacted cemented carbide and pre-sintered body, which are not mechanically strong and easy to damage. An object of the present invention is to provide a jig for supporting a grinding body.

The present invention proposed to solve the technical problems as described above is based on a grinding part provided on a rotating end face of a grinding wheel that is rotated by a rotary drive device. green compact hard alloy is brought into contact with the outer peripheral surface of the grinding body made of pre-sintered body or a sintered body, a support jig grinding bodies used in the grinding apparatus for performing grinding of the outer peripheral surface, the A support base installed on the work surface plate of the grinding apparatus and sliding on the work surface; a support shaft provided perpendicular to the support base; and movable in the axial direction of the support shaft , A moving support member that is supported by the support shaft by restricting rotation of the support shaft in the direction around the axis , a first support pin attached to the support base, and a tip portion of the tip end portion of the first support pin Attached to the movable support member opposite to each other. The grinding body disposed between the first support pin and a second support pins for supporting rotatably in cooperation with said first supporting Pinto, between the support base and the movable support member The ground body to be disposed is rotatably supported by the first and second support pins .

First and second support pins used in the support jig of the grinding body is sharpened tip on the distal end side is formed, by supporting the end faces facing each other of the grinding bodies by the sharpened tip, said grinding Support the body for rotation.

And the 1st and 2nd support pin is located and attached so that the front-end | tip part may correspond on the same axis line.

Further, the first and second support pins are attached to support pieces respectively attached to the support base and the movable support member so as to protrude from the support base and the movable support member.

Furthermore, the support shaft is provided with a movement restricting member that restricts movement of the moving support member toward the support base and restricts contact of the first and second support pins.

A grinding body support jig according to the present invention includes a support base that slides on a work surface plate of a grinding apparatus that performs grinding by bringing an outer peripheral surface of a grinding body into contact with a side surface of a grinding wheel, and this support. Since the grinding body arranged between the support shaft movably supported with respect to the support shaft provided perpendicularly to the base is rotatably supported using a pair of support pins, a pair of While the grinding body is supported by the support pins, the grinding body rotates by moving to the grinding wheel side and bringing the grinding body into contact with the grinding portion provided on the rotating end surface of the grinding wheel. The outer peripheral surface is ground while being rotated by receiving the rotational force.

In the present invention, the grinding body is disposed between the support base and the movable support member, and the grinding body is fixed only by being supported by the pair of support pins. In addition, since it does not have a configuration for gripping the grinding body, it is possible to support the compact or pre-sintered body of cemented carbide with low mechanical strength without damage.

Furthermore, by using the jig according to the present invention, the entire outer peripheral surface of the grinding body formed into a columnar shape or a cylindrical shape can be ground at a time, and the grinding efficiency can be improved.

Furthermore, since the supporting jig for the grinding body according to the present invention has a sharpened portion on the tip side of the pair of support pins, the grinding body can be stably and rotatably supported.

Furthermore, since a movement restricting member for restricting the movement of the moving support member toward the support base is provided and the contact of the pair of support pins is restricted, the support pins are prevented from colliding to protect them. be able to.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a grinding body support jig according to the present invention will be described with reference to the drawings.

A grinding body support jig 101 according to the present invention is used when grinding an outer peripheral surface of a cylindrical or cylindrical grinding body using a grinding apparatus as shown in FIG. Used to rotatably support the body.

First, a grinding apparatus that grinds a grinding body supported by a supporting jig 101 according to the present invention will be described. As shown in FIG. 1, the grinding apparatus includes a base portion 1 that constitutes an apparatus main body, A rotation drive unit for rotating the grinding wheel 2 is incorporated in the base unit 1. The rotational drive unit is constituted by a drive motor 3. The grinding wheel 2 is attached to the drive shaft of the drive motor 3 via the hub 4. The grinding wheel 2 is rotated by driving the drive motor 3 to rotate.

One rotating end face desired on the outer side of the grinding wheel 2 is a grinding portion 5 for grinding a cylindrical or cylindrical grinding body 100 to be ground by this grinding apparatus. Grinding diamond particles are deposited by electrodeposition on one rotating end surface of the grinding wheel 2 serving as a grinding portion.

A work surface plate 7 on which a supporting jig 101 that supports a grinding body 100 to be ground by the grinding wheel 2 is placed is attached to the base portion 1. The work surface plate 7 is formed of a magnetic metal such as iron, and the mounting surface 7a on which the supporting jig 101 is mounted is flattened with high accuracy. As shown in FIG. 1, the work surface plate 7 is positioned on the lower side of the rotation center P0 of the grinding wheel 2 and is attached to the base portion 1 so as to be opposed to the rotation surface of the grinding wheel 2. It has been. The work platen 7 is supported by a support frame 8 projecting from the side surface of the base portion 1 at one end located on the grinding wheel 2 side, and supported by a plurality of support legs 9 at the other end. Thereby, it arrange | positions so that it may orthogonally cross to the rotating surface of the wheel 2 for grinding.

As shown in FIG. 1, the support jig 101 is moved to the grinding wheel 2 side on the work surface plate 7, and the grinding body 100 supported by the support jig 101 is moved to the grinding wheel 2. A grinding body support mechanism 11 that presses and supports the grinding body 5 and a moving operation mechanism 12 that moves the grinding body support mechanism 11 forward and backward relative to the grinding section 5 of the grinding wheel 2 are disposed.

As shown in FIGS. 2, 3 and 4, the grinding body support mechanism 11 is slidably supported on a slide guide block 14 fixedly mounted on a support base 13 attached to the upper surface of the work surface plate 7. A pair of slide shafts 15 and 16 is provided.

Support base 13, the L-shaped rack 17, 18 mounted on the work platen 7, by both sides are pressed and supported orthogonal to the grinding wheel 2 is fixed to the work surface plate 7.

The slide guide block 14 is attached to the support base 13 via a plurality of fixing screws 19. A pair of through holes 20 and 21 are formed in the slide guide block 14 in parallel with each other, and a pair of slide bushes 22 and 23 are fitted into the through holes 20 and 21, respectively. Slide shafts 15 and 16 are inserted into the through holes 20 and 21 via the slide bushes 22 and 23, respectively.

Although details are omitted at the end portions of the slide bushes 22 and 23 located on the opening end sides of the through holes 20 and 21, a seal such as a felt for ensuring smooth movement of the slide shafts 15 and 16 is omitted. A member is provided.

Both ends of the pair of slide shafts 15 and 16 slidably supported by the slide guide block 14 are connected via connection blocks 24 and 25, respectively. The pair of slide shafts 15 and 16 are connected to the slide guide block 14 by being connected by connecting blocks 24 and 25. As shown in FIG. 3, the connecting blocks 24 and 25 are configured so that the slide shafts 15 and 16 are sandwiched by a pair of screws 26 and 27 inserted from the upper and lower surfaces of the connecting blocks 24 and 25. 15 and 16 are attached.

A pressing member 28 for pressing and supporting the grinding body against the grinding wheel 2 is attached to one end side of the pair of slide shafts 15 and 16 facing the grinding wheel 2. The pressing member 28 is attached to one side surface of the connecting member 24 attached to one end side of the pair of slide shafts 15 and 16 via a fixing screw 29.

As described above, the grinding body support mechanism 11 configured by attaching the pressing member 28 to one end of the pair of slide shafts 15 and 16 movably supported by the slide guide block 14 is operated by being pressed. The pair of slide shafts 15, 16 are guided by the slide guide block 14, and are moved and operated in a direction in which the pressing member 28 approaches or separates from the grinding wheel 2.

At this time, the pair of slide shafts 15 and 16 are supported so as to be perpendicular to the rotation end surface of the grinding wheel 2, so that the grinding body support mechanism 11 is in a direction perpendicular to the rotation end surface of the grinding wheel 2. Be advanced and retreated.

In addition, the grinding body support mechanism 11 is covered with the metal cover 30 as shown in FIG. This is to prevent abrasive powder from the grinding body from adhering to the slide shafts 15 and 16 and the slide guide block 14 to prevent the grinding body support mechanism 11 from hindering smooth movement.

The polishing apparatus using the support jig 101 according to the present invention is provided with a moving operation mechanism 12 that moves the above-described grinding body support mechanism 11 forward and backward with respect to the rotating end surface of the grinding wheel 2. As shown in FIGS. 1 and 2, the movement operation mechanism 12 includes a rotation operation lever 31 for moving the grinding body support mechanism 11. One end of the rotation operation lever 31 is rotatably supported by a lever mounting plate 32 provided on one L-shaped rack 17 via a rotation support portion 33, and is arranged so as to cross the grinding body support mechanism 11. It is installed. The rotation operation lever 31 is rotated in the directions indicated by the arrows X1 and X2 in FIG. 2 around the rotation support portion 33 by gripping and operating the grip portion 34 provided on the other end side. A link lever 35 having one end rotatably supported by the grinding body support mechanism 11 is connected to the rotation operation lever 31. The link lever 35 supports one end on a rotation support portion 37 provided on a mounting bracket 36 attached to the other end portion side of the grinding body support mechanism 11, and supports the other end on a midway portion of the rotation operation lever 31. The rotation operation lever 31 and the grinding body support mechanism 11 are connected by being rotatably supported via the portion 38. Note that the mounting bracket 36 is mounted on the cover 30 of the grinding body support mechanism 11.

Moving the operation mechanism 12 is composed of a rotation operation lever 31 as described above the link lever 35., when the rotation operation lever 31 is rotated to the arrow X1 direction in FIG. 2 around the rotation supporting portion 33, the The link lever 35 having the other end connected to the middle portion of the rotation operation lever 31 rotates in the direction of the arrow X3 in FIG. When the link lever 35 rotates in the arrow X3 direction, the moving operation mechanism 12 moves in the arrow Y1 direction in FIG. That is, the pair of slide shafts 15 and 16 are guided by the slide guide block 14 and moved in the direction of the arrow Y1 in FIG. 2, and the pressing member 28 attached to one end side of the pair of slide shafts 15 and 16 is used for the grinding wheel 2. Is moved in the direction of approaching. At this time, the supporting jig 101 supporting the grinding body 100 is disposed between the pressing member 28 and the grinding wheel 2 so as to be placed on the work surface plate 7, thereby supporting the supporting jig. The tool 101 is moved toward the grinding wheel 2 while being pressed by the pressing member 28, and the grinding body 100 supported by the supporting jig 101 is brought into contact with the grinding part 5. Then, the grinding body 100 is brought into contact with the grinding body 100 in a state where the grinding wheel 2 rotated by driving the drive motor 3 is rotated, whereby the grinding body 100 is ground.

When the rotation operation lever 31 is rotated in the direction of the arrow X2 in FIG. 2 around the rotation support portion 33 , the link lever 35 rotates in the direction of the arrow X4 in FIG. The moving operation mechanism 12 can be separated from the grinding wheel 2 in the direction of arrow Y2 in FIG. Then, the pressing support of the supporting jig 101 by the pressing member 28 is released, and the grinding body 100 can be taken out.

In addition, the grinding apparatus mentioned above is provided with the protective cover 41 which covers the grinding wheel 2 rotated, as shown in FIG. Further, a cover 42 is provided on one side of the work surface plate 7 to prevent dust from being scattered when the grinding body 100 is ground by the grinding wheel 2. The cover 42 is provided with a lamp 43 for illuminating the work surface 7 .

By the way, as shown in FIG. 5, the supporting jig 101 for supporting the grinding body 100 on which the outer peripheral surface is polished using the polishing apparatus as described above is installed on the work surface plate 7 of the grinding apparatus. The support base 102 is provided. The support base 102 is provided with a slide plate 103 that is pressed by the pressing member 28 of the grinding body support mechanism 11 and slides on the work surface plate 7 on the bottom surface side. The slide plate 103 is formed in such a size that one end portion protrudes from the back surface portion of the support base 102. The supporting jig 101 is moved on the work surface plate 7 when the slide plate 103 is pressed by the pressing member 28.

On the back side of the support base 102, as shown in FIG. 5, a handle 114 used when the support jig 101 is held and moved by fingers is provided. The supporting jig 101 according to the present invention is gripped with fingers and moved on the work surface plate 7 without using the grinding body support mechanism 11, and the supported grinding body 100 is brought close to the grinding wheel 2, Grinding can be performed by bringing the grinding body 100 into contact with the grinding part 5.

The support base 101 is provided with a support shaft 105 so as to be planted perpendicularly to the support base 101. The support shaft 105 is provided with a second support pin 107 that supports a columnar or cylindrical grinding body 100 in cooperation with a first support pin 106 provided on the support base 101 side. Is movably mounted. The moving support member 108 is attached so as to move along the support shaft 105 by inserting a cylindrical insertion support portion 109 provided on the base end side through the support shaft 105.

Then, as shown in FIG. 5, the second support pin 107 protrudes to the distal end portion of the support arm 110 provided on the proximal end side of the insertion support portion 109 so as to protrude to the side of the support shaft 105. It is mounted vertically with the side facing down. On the other hand, the first support pin 106 is vertically attached to the front end portion of the support protrusion 121 provided so as to protrude from the front end side of the support base 101.

By the way, the first and second support pins 106 and 107 are positioned and attached so that the tips thereof coincide with each other on the same axis. Since the tip ends coincide with each other on the same axis, the grinding body 100 whose upper and lower end surfaces are supported by the first and second support pins 106, 107 is supported by the first and second support pins 106, 107. It can be rotated about the supported point.

Note that sharpened portions 106a and 107a are formed on the distal ends of the first and second support pins 106 and 107, respectively. The grinding body 100 is supported so as to be rotatable around the sharpened portions 106a and 107a, with the end faces facing each other being supported by the sharpened portions 106a and 107a. In other words, the first and second support pins 106 and 107 are provided with the sharpened portions 106a and 107a on the tip side, so that the grinding body 100 can be reliably supported in a rotatable manner.

By the way, between the support shaft 105 and the moving support member 108, the moving support member is maintained so that the tip portions of the first and second support pins 106 and 107 are located on the same axis and coincide with each other. An anti-rotation mechanism 111 for restricting the rotation of the support 108 with respect to the support shaft 105 is provided. As shown in FIG. 6, the rotation preventing mechanism 111 includes a notch 112 formed by notching the outer peripheral surface of the support shaft 105 and a fitting projectingly provided on the inner peripheral surface of the insertion hole of the moving support member 108. And a protrusion 113. Here, the notch 112 is formed so as to form a small-diameter portion on a part of the outer peripheral surface of the support shaft 104 as shown in FIG. The notch 112 is formed over a range in which the movable support member 108 moves in the axial direction of the support shaft 105. Further, the fitting protrusion 113 is formed in a shape corresponding to the notch 112, and the rotation of the movable support member 108 around the support shaft 105 is restricted by fitting into the notch 112. Yes.

As described above, since the movement support member 108 is supported by the support shaft 105 with its rotation restricted, the distal end portions of the first and second support pins 106 and 107 are maintained in the same axial line. It is possible to support the grinding body 100 in a state where the center of rotation coincides with the top and bottom of the grinding body 100, and realize stable rotation of the grinding body 100.

The moving support member 108 is provided with a fixing member 115 for fixing the moving position with respect to the support shaft 105. The fixing member 115 is configured by a screw member that is inserted into a screw hole 116 formed in the peripheral wall of the insertion support portion 109. The moving support member 108 is fixed by screwing the fixing member 115 into the screw hole 116 and sandwiching the support shaft 105.

The support jig 101 according to the present invention has the movable support member 108 fixed to the support shaft 105, so that the grinding body 100 can be reliably supported by the first and second support pins 106, 107, Since the distance between the first and second support pins 106 and 107 can be fixed, the grinding body 100 can be supported without unnecessary addition. In particular, even a cemented carbide compact or a pre-sintered body, which has insufficient mechanical strength and is easily damaged, can be reliably supported and prevented from being damaged.

Further, on the base side of the support shaft 105, as shown in FIG. 5, the movement of the movable support member 108 toward the support base 101 is restricted, and the contact of the first and second support pins 106 and 107 is restricted. A movement restricting member 117 is provided. The movement restricting member 117 is desirably formed of an elastic synthetic resin or the like so as to absorb an impact when the movement supporting member 108 falls along the support shaft 105.

Next, the state which grinds the outer peripheral surface of the grinding body 100 shape | molded in the column shape or the cylindrical shape using the grinding apparatus as mentioned above is demonstrated.

Here, the grinding body 100 to be ground is a cemented carbide compact, a pre-sintered body, or a sintered body formed into a columnar shape or a cylindrical shape. In addition, when the grinding body 100 is cylindrical, in order to be able to support with the 1st and 2nd support pins 106 and 107, the opening part of each upper and lower end surface is obstruct | occluded with a suitable obstruction | occlusion member.

In order to grind the outer peripheral surface of the grinding body 100 formed into a columnar shape or a cylindrical shape using the above-described grinding apparatus, the grinding body 100 is supported by the supporting jig 101 according to the present invention.

In order to support the grinding body 100 on the support jig 101, the fixing member 115 is loosened, and the movable support member 108 is movable with respect to the support shaft 105. The movable support member 108 is moved with respect to the support shaft 105, the distance between the first support pin 106 and the second support pin 107 is adjusted, and the grinding body 100 is disposed between the support pins 106 and 107. Next, the movement support member 108 is adjusted by movement, and is supported by the first and second support pins 106 and 107 so as to be sandwiched from above and below the grinding body 100. At this time, the position of the grinding body 100 is adjusted such that the first and second support pins 106 and 107 support the position that is the rotation center of the grinding body 100 or the vicinity thereof. Next, the fixing member 115 is screwed into the screw hole 116 to fix the moving support member 108. When the movable support member 108 is fixed, the grinding body 100 is supported between the first and second support pins 106 and 107.

When the grinding body 100 is supported as described above, the supporting jig 101 is placed on the work surface plate 7 of the grinding apparatus. At this time, the supporting jig 101 is installed so that the grinding body 100 faces the grinding wheel 2 as shown in FIG. In this state, when the rotation operation lever 31 is rotated in the arrow X1 direction in FIG. 2, the link lever 35 rotates in the arrow X3 direction in FIG. 2, and the movement operation mechanism 12 moves in the arrow Y1 direction in FIG. Then, the pressing member 28 attached to one end side of the pair of slide shafts 15 and 16 comes into contact with the end portion of the slide plate 103 of the support jig 101, and the support jig 101 is ground in the direction of arrow Y1 in FIG. Move to the wheel 2 side.

When the support jig 101 is moved to the grinding wheel 2 side, the grinding body 100 supported between the first and second support pins 106 and 107 is brought into contact with the grinding part 5 of the grinding wheel 2. At this time, grinding of the outer peripheral surface of the grinding body 100 is performed by driving the drive motor 3 to rotate the grinding wheel 2 that is rotated. And since each end surface is supported by the 1st and 2nd support pins 106 and 107 at one point, the grinding body 100 receives the rotational force of the grinding wheel 2, and the 1st and 2nd support pins 106, Grinding is performed while rotating around 107, and columnar or cylindrical outer peripheral surfaces are ground.

After grinding the outer peripheral surface of the grinding body 100 supported by the supporting jig 101 by a desired amount, the rotary operation lever 31 is rotated in the direction of the arrow X2 in FIG. 2, and the moving operation mechanism 12 is moved in the direction of the arrow Y2 in FIG. When moved in the direction away from the grinding wheel 2, the pressing of the supporting jig 101 by the pressing member 28 is released, and the supporting jig 101 can be detached from the work surface plate 7. The support jig 101 is removed from the work surface plate 7, the fixing member 115 is loosened, the movable support member 108 is moved, the interval between the first and second support pins 106 and 107 is increased, and the grinding body 100 is supported. The grinding is completed by removing from the jig 101.

In the above-described embodiment, an example in which the present invention is applied to a grinding apparatus provided with the moving operation mechanism 12 has been described. However, when grinding is performed in a grinding apparatus that does not include such a moving operation mechanism 12, the support base 102 is used. The support jig 101 is placed on the work surface plate 7 by gripping the handle 114 provided on the back surface of the work surface, the work surface plate 7 is slid, and the grinding body 100 supported by the support jig 101 is removed. Grinding is performed in contact with the grinding wheel 2.

By the way, when the grinding body 100 is ground using the supporting jig 101 according to the present invention, the supporting jig 101 moves in the moving direction in order to ensure that the outer peripheral surface of the grinding body 100 contacts the grinding wheel 2. It is desirable to move on the work surface plate 7 in a state in which is defined. Further, in order to prevent a situation in which the grinding body 100 is separated from the grinding wheel 2 due to, for example, rotation of the supporting jig 101 during grinding of the grinding body 100, a supporting jig is provided. It is desirable that the installation state of 101 on the work surface plate 7 is regulated.

Therefore, the supporting jig 101 according to the present invention further includes posture regulating members 118 and 119 that define the installation state and the moving direction when installed on the work surface plate 7. As shown in FIG. 6, these posture regulating members 118 and 119 are arranged on the work surface plate 7 so as to support both sides of the support jig 101 when the support jig 101 is installed on the work surface plate 7. attached to Ru. These posture regulating members 118 and 119 regulate the installation state and moving direction of the supporting jig 101, and are magnetically attracted and fixed on the work surface plate 7 made of a magnetic material. Magnetic adsorption means such as a magnet is provided.

Since these attitude regulating members 118 and 119 are installed on the work surface plate 7 by magnetic attraction means, they can be easily attached and detached, so that the installation work can be easily performed.

As described above, by using the supporting jig 101 according to the present invention, the outer peripheral surface of the cylindrical or cylindrical grinding body 100 is easily and reliably ground using the grinding wheel 2 that is rotated. can do.

It is a perspective view showing the outline of the grinding device in which the support jig concerning the present invention is used. It is a top view which shows schematic structure of the grinding body support mechanism and movement operation mechanism which comprise a grinding device. It is a side view showing the schematic structure of a grinding body support mechanism and a movement operation mechanism. It is a rear view of schematic structure of a grinding body support mechanism and a movement operation mechanism. It is a perspective view which shows the supporting jig which concerns on this invention. It is sectional drawing which shows the attachment state to the support shaft of the support member in the jig | tool for support which concerns on this invention. It is a perspective view which shows the state which controlled the jig | tool for support with the attitude | position control member.

2 Grinding wheel 7 Work surface plate 100 Grinding body 101 Support jig 102 Support base 105 Support shaft 106 First support pin 107 Second support pin 108 Moving support member 111 Anti-rotation mechanism 115 Fixing member

Claims (6)

Grinding consisting of a cemented carbide compact, pre-sintered body or sintered body formed in a cylindrical or cylindrical shape on a grinding part provided on the rotating end face of a grinding wheel that is rotated by a rotary drive device contacting the outer peripheral surface of the body, a support jig grinding bodies used in the grinding apparatus for performing grinding of the outer peripheral surface,
A support base installed on the work surface plate of the grinding apparatus and sliding on the work surface plate;
A support shaft provided perpendicular to the support base;
A movable support member that is movable in the axial direction of the support shaft and that is supported by the support shaft while being restricted from rotating around the axis of the support shaft ;
A first support pin attached to the support base;
A grinding body that is attached to the movable support member with a tip portion opposed to the tip portion of the first support pin and disposed between the first support pin and the first support pin is jointly mounted. A second support pin rotatably supported ;
A grinding body support jig, wherein the grinding body disposed between the support base and the movable support member is rotatably supported by the first and second support pins . The first and second support pins have a sharpened portion formed on the tip side, and support the grounded body rotatably by supporting the opposing end surfaces of the grounded body by the sharpened portion. The jig for supporting a grinding body according to claim 1. 3. The jig for supporting a grinding body according to claim 1 or 2, wherein the first and second support pins are mounted so as to have their tip portions aligned on the same axis. The first and second support pins are attached to support pieces respectively attached to the support base and the movable support member so as to protrude from the support base and the movable support member. Item 2. A jig for supporting a ground body according to Item 1. The support shaft is provided with a movement restricting member that restricts movement of the moving support member toward the support base and restricts contact of the first and second support pins. The jig for supporting a ground body according to claim 1. A pair of attitude restriction members that are arranged opposite to each other on the support base and are magnetically attracted to the support base and are mounted and supported between the pair of attitude restriction members. The jig for supporting a grinding body according to claim 1 , wherein a moving direction on the support base is regulated .