JP5939946B2 - Polishing equipment - Google Patents

Description

  The present invention relates to a polishing apparatus including a guide member for polishing an object to be polished into a target shape.

  Patent Document 1 listed below describes an ice skating blade polishing device (hereinafter, the ice skating blade may be simply referred to as a blade). In general polishing apparatuses such as the polishing apparatus described in Patent Document 1, when polishing an object that requires high dimensional accuracy such as the above-described blade, it is required unless it is an engineer having skill. There was a problem that it was not possible to perform polishing suitable for the above.

JP 2011-45971 A

  In view of the above problems, an object of the present invention is to provide a polishing apparatus that can easily polish an object into a target shape without skilled techniques.

Polishing apparatus according to the present invention in order to solve the above problems, a polishing body for polishing a Migaku Ken object, a supporting member for supporting the polishing body, a shape polishing shape of the object of polishing is to target A guide member for guiding the support member on which the polishing body is supported, wherein the guide member is formed in a linear shape along a width direction which is a reference direction, and the target A second guide portion formed in a curved shape obtained on the basis of the shape, and the support member is more in contact with the first guide portion than the first contact portion. A second contact part that contacts the second guide part provided at a position near the contact point between the polishing object and the polishing body, and the first guide part and the first contact part, and While supporting the second guide portion and the second contact portion, the support The contact point between the polishing body and the object to be polished is moved along the same locus as the target shape by moving the member and the polishing body supported by the member in the width direction. Features.

The curve shape y = F (x) of the second guide portion is a shape calculated from the target shape y = f (x) by the following equation.
F (x) = (f (x−m)) × r
However, in said formula, x is the position of the said width direction, y is the position of the said front-back direction,
m is the distance from the contact point between the polishing body and the object to be polished in the width direction (x-axis direction) to the contact point between the second guide part and the second contact part, and r is the first guide part. A linear distance d1 from the contact point of the first contact part to the contact point of the polishing body and the object to be polished, and the contact point of the first guide part and the first contact part to the second guide part and the first contact point. The ratio of the linear distance d2 to the contact point of the two contact portions, d2 / d1, is shown.

  The target shape may be a convex shape, and the second guide portion may be formed in a curved shape that is convex toward the support member in the front-rear direction orthogonal to the width direction.

  The guide member is formed by arranging the first guide portion and the second guide portion in a height direction perpendicular to the width direction and the front-rear direction, and in the support member, the first contact portion and the first guide portion The two contact portions may be provided at different heights.

  The polishing body is a cylindrical member positioned between the first contact portion and the second contact portion in the width direction, and the side surface of the rotating cylinder contacts the polishing object. What is necessary is just to be supported by the said supporting member so that a grinding | polishing target object may be grind | polished.

  In the present invention, the support member that supports the polishing body has the first contact portion that contacts the linear first guide portion and the second guide portion that contacts the curved second shape obtained from the target shape. A two-contact portion. At the time of polishing, the second contact portion provided on the side close to the location where the object to be polished and the polishing body contact is along the second guide portion, with the location where the first guide portion and the first contact portion are in contact as a reference. The contact point between the polishing body and the object to be polished moves along the same locus as the target shape. That is, since the location where the polishing body and the object to be polished are in contact is stabilized, the target shape can be created more precisely. Further, since the first contact portion is brought into contact with the first guide portion and the second contact portion is brought into contact with the second guide portion, the supporting member for supporting the polishing body has only to be moved, so that the processing operation is simple.

  In addition, if the guide member is positioned at different heights in the guide member, and the contact member is positioned at different heights in the support member in accordance with this, it is only necessary to press the support member against the guide member. Since the first contact portion comes into contact with the first guide portion and the second contact portion comes into contact with the second guide portion, the machining operation becomes easier.

1 is an external view of a polishing apparatus according to an embodiment of the present invention. It is an external view of a support member, a motor supported on the support member, and a polishing body. It is the external view which looked at the support member, the motor supported by it, and the grinding | polishing body from the direction different from FIG. It is the figure which looked at the supporting member, the motor supported by it, and the grinding | polishing body from the grinding | polishing body side. FIG. 5A is an external view of the guide member, and FIG. 5B is a plan view of the guide member. FIG. 6A is an external view of an object to be polished (skate blade), and FIG. 6B is a plan view of the object to be polished. It is the side view which looked at the fixed base from the width direction right side (A arrow line view shown in FIG. 1). Position of contact point p1 between the first roller (first contact portion) and the first guide portion, contact point p2 between the second roller (second contact portion) and the second guide portion, and contact point p3 between the polishing body and the object to be polished It is the figure which showed the relationship. It is a figure for demonstrating the procedure which derives | leads-out the shape (R) of a 2nd guide part from the target shape (Q).

  Embodiments of the present invention will be described in detail. In the following description, the width direction (left-right direction) refers to the illustrated x-axis direction, the height direction (up-down direction) refers to the illustrated z-axis direction, and the front-rear direction refers to the width direction and the height direction. It is an orthogonal direction and refers to the illustrated y-axis direction (the guide member 30 side is the front and the polishing body (motor 40) side is the rear). Further, the horizontal direction means a direction along a plane extending in the left-right direction and the front-rear direction.

(Configuration of polishing equipment)
The polishing apparatus 1 according to the present embodiment is used for polishing a skate blade (see FIG. 6), which is an object to be polished 90, into a target shape, and includes a polishing body 10 and the polishing body 10. A support member 20 to be supported and a guide member 30 to guide the support member 20 are provided. The polishing surface of the skate blade, which is the polishing object 90 of the present embodiment, has a convex shape (including a part with a flat part, that is, any part without a concave part). Each configuration will be described below.

  The polishing body 10 (grinding stone) is a member that contacts the polishing object 90 and polishes a predetermined portion of the polishing object 90. In the present embodiment, a cylindrical polishing body 10 is used. The cylindrical polishing body 10 has a bottom, and is connected to an output shaft (rotor) of the motor 40 via a connection member 41 connected to the bottom. When the motor 40 is driven, the polishing body 10 rotates with the rotation axis at the center of the cylinder as the rotation center axis. The polishing body 10 is installed so that the rotation center axis thereof is substantially along the front-rear direction, and the front side surface of the polishing body 10 (the surface orthogonal to the outer peripheral surface having a circular cross section) is in contact with the object to be polished 90 (hereinafter, It may also be referred to as contact surface 11).

  The support member 20 is a member that supports the polishing body 10 together with the motor 40, and includes a sub base 21, a mounting plate 22, a first roller 23 (corresponding to a first contact portion in the present invention), and a second roller 24 ( Corresponding to the second contact portion in the present invention). The sub base 21 is a plate on which the motor 40 to which the polishing body 10 is connected is placed. The sub-base 21 is placed on the base 50 of the apparatus. The base 50 is installed in the horizontal direction, and the sub-base 21 is installed on the base 50 so as to be slidable. That is, the sub base 21 can be freely slid in the horizontal direction. A lower end of a connecting plate 25 extending in the height direction is connected to the sub-base 21, and a mounting plate 22 is connected to the upper end of the connecting plate 25. The motor 40 is connected to both the sub base 21 and the mounting plate 22 so as to be sandwiched between the sub base 21 and the mounting plate 22, and the output shaft passes through a through hole (not shown) formed in the connecting plate 25. Has been.

  Further, on the sub-base 21, block-like support portions (first support portion 211 and second support portion 212) located on the outer side in the width direction of the polishing body 10 (motor 40) are provided. A first roller support shaft 261 and a second roller support shaft 262 are supported on the first support portion 211 and the second support portion 212, respectively. Specifically, through holes extending in the front-rear direction are formed in the first support portion 211 and the second support portion 212, and the first roller support shaft 261 and the second roller support shaft 262 are first through the through holes. The support part 211 and the second support part 212 are supported by each support part in a state of penetrating the support part 211 and the second support part 212. The first roller 23, the first roller support shaft 261, and the second roller support shaft 262 are respectively provided at the tips of the first roller 23 and the second roller support shaft 262 so that the rotation direction is in the horizontal direction (the rotation center axis is the vertical direction). Two rollers 24 are connected. The first roller 23 is located at a position lower than the second roller 24. The difference in height h (see FIG. 4) is the same as the difference in height of the guide portions in the guide member 30 described later in detail.

  The guide member 30 is a plate that is long in the width direction for guiding the support member 20. The guide member 30 is a member in which a first guide portion 31 and a second guide portion 32 arranged in the height direction (thickness direction of the guide member 30) are integrally formed. On the lower side, a first guide portion 31 formed in a straight line along the width direction is formed. The linear direction, that is, the width direction of the first guide portion 31 is a reference direction in the polishing process using the present apparatus. On the upper side, a curved second guide portion 32 obtained based on the shape (target shape) after polishing of the object 90 is formed. The second guide portion 32 has a curved shape that is convex toward the support member 20 in the front-rear direction when viewed from the height direction. A method for setting the shape of the second guide portion 32 will be described later. The first guide portion 31 is formed in a straight line shape (in a plane extending in the vertical and horizontal directions) along the width direction passing through the convex top portion (the portion located on the most rear side) of the second guide portion 32. In the polishing apparatus 1 according to the present embodiment, the width direction, that is, the linear direction of the first guide portion 31 is set as a reference direction. At the boundary between the first guide portion 31 and the second guide portion 32 of the guide member 30, there is no step at the portion passing through the top portion, and there is a step at other locations. An end surface (front surface) opposite to the end surface on which the first guide portion 31 and the second guide portion 32 are formed in the guide member 30 is a plane parallel to the first guide portion 31. The upper and lower surfaces of the guide member 30 are flat surfaces extending in the front-rear and left-right directions.

  The guide member 30 is fixed to a fixing base 60 attached to the front side of the base 50 of the apparatus. The fixed base 60 is formed with a first positioning surface 61 that is a plane extending in the front-rear and left-right directions and a second positioning surface 62 that is a plane orthogonal to the first positioning surface 61. By bringing the front surface into contact with the second positioning surface 62, the guide member 30 is positioned in the front-rear direction and the height direction with respect to the fixed base 60. The fixed base 60 is provided with a guide fixing plate 63 provided so as to be rotatable with respect to the main body portion of the base, and the guide member 30 is sandwiched between the guide fixing plate 63 and the first positioning surface 61. It is fixed by. The guide member 30 is also positioned in the width direction by another positioning element (not shown) (an element that engages with a positioning recess 33 (see FIG. 5) formed in the guide member 30 is provided in the fixed base 60. ). When the guide member 30 is fixed at the position, the first guide portion 31 is located at the same height as the first roller 23, and the second guide portion 32 is located at the same height as the second roller 24. That is, when the support member 20 is brought close to the guide member 30, the first roller 23 comes into contact with the first guide portion 31 and the second roller 24 comes into contact with the second guide portion 32.

  In addition to the structure for fixing the guide member 30, the fixing base 60 is provided with a structure for fixing the polishing object 90. On the upper side of the fixing base 60, an object fixing portion 64 is provided so as to be rotatable with respect to the main body portion of the fixing base 60. The object fixing portion 64 and the main body portion of the fixing base 60 are provided. The polishing object 90 is sandwiched and supported by the object support part. The fixed base 60 is provided with several portions that come into contact with the reference portion of the polishing object 90 (the portion having a high relative positional relationship with the polishing surface 91). The positioning element is positioned in the width direction, the front-rear direction, and the height direction (the positioning element may be appropriately set according to the shape of the object 90 to be polished (reference site)). The polishing object 90 is in a state in which the surface to be polished protrudes rearward from the rear surface of the fixed base 60. The configuration of the fixed base 60 described above is an example, and both the members can be positioned so that the relative positional relationship between the guide member 30 and the polishing object 90 is a predetermined relationship, and both of the guide members 30 can be positioned. Any configuration may be used as long as the guide portions 31 and 32 can be positioned at positions where they contact the rollers 23 and 24 of the support member.

(Polishing using polishing equipment)
A polishing method using the polishing apparatus 1 (operation of the polishing apparatus 1) will be described. First, the polishing object 90 and the guide member 30 are fixed to the fixing table 60. By fixing the fixing base 60, the relative positional relationship between the two is set to a predetermined relationship. With the polishing body 10 rotated, the support member 20 is moved forward to bring the polishing body 10 and the object to be polished 90 into contact. Specifically, as shown in FIG. 6 (b), the contact surface of the polishing body 10 at the end of one side in the width direction (second roller 24 side; right side in the present embodiment) of the polishing surface 91 in the polishing object 90. 11 is brought into contact. When the support member 20 is thus moved forward, the first roller 23 comes into contact with the first guide portion 31 and the second roller 24 comes into contact with the second guide portion 32 as shown in FIG. . That is, the contact point between the second roller 24 and the second guide part 32 is located closer to the contact point between the object 90 and the polishing body 10 than the contact point between the first roller 23 and the first guide part 31. . As described above, the first roller 23 and the first guide portion 31 are set at the same height, and the second roller 24 and the second guide portion 32 are set at the same height. And the second guide part 32 does not contact, and the second roller 24 and the first guide part 31 do not contact each other.

  The first roller 23 is brought into contact with the first guide portion 31 and the second roller 24 is brought into contact with the second guide portion 32 while the contact surface 11 of the polishing body 10 is brought into contact with the object 90 by pressing the support member 20 forward. The support member 20 and the polishing body 10 supported by the support member 20 are moved toward the other side in the width direction.

  Then, the contact point between the first roller 23 and the first guide part 31 moves along the width direction, and the contact point between the second roller 24 and the second guide part 32 follows the shape of the second guide part 32. And move. The contact point between the polishing body 10 and the object 90 to be polished located on the second roller 24 side (the contact point side between the second roller 24 and the second guide part 32) has a shape similar to the shape of the second guide part 32. It moves along the same trajectory as the target convex shape. That is, with the contact point of the first roller 23 moving along the width direction and the first guide portion 31 as a fulcrum, the contact point of the polishing body 10 and the polishing object 90 moves with the target convex shape and locus. Accordingly, the polishing object 90 is polished into the target convex shape.

  In this manner, the polishing object 90 can be polished into a target convex shape. Here, in the present embodiment, the contact point between the second roller 24 and the second guide portion 32 and the contact point between the polishing body 10 and the polishing object 90 are located at positions shifted by a predetermined amount in the front-rear direction and the width direction. Therefore, in order to make the locus of the contact point a target convex shape, the shape of the second guide portion 32 is set as follows ( Correction).

(Setting the shape of the second guide part)
FIG. 9 shows a curve Q (y = f (x)) along the target convex shape of the polishing object 90. In FIG. 9, x indicates a position in the width direction, and y indicates a position in the front-rear direction, and the y direction is shown enlarged for easy understanding of the drawing. The shape of the curve R (y = F (x)) of the second guide portion 32 can be set by executing the following procedure.

  First, in order to correct the gap in the width direction (x-axis direction) of both members having a predetermined relative positional relationship when the polishing object 90 and the guide member 30 are fixed to the fixing base 60, the target A convex curve Q is defined as a distance m from the contact point p3 of the polishing body 10 and the polishing object 90 to the contact point p2 of the second guide portion 32 and the second contact portion in the width direction (x-axis direction) (FIG. 8)) in the width direction. A curve obtained by this parallel movement is a curve P (y = f (x−m)) shown in FIG.

  Second, the contact point p1 between the first guide portion 31 and the first contact portion, that is, the gap from the reference point (the difference in distance from the reference point) is corrected. Specifically, the linear distance (shortest distance) d1 (see FIG. 8) from the contact point p1 between the first guide part 31 and the first contact part to the contact point p3 between the polishing body 10 and the object 90 to be polished, This is the ratio of the linear distance (shortest distance) d2 (see FIG. 8) from the contact point p1 between the guide part 31 and the first contact part to the contact point p2 between the second guide part 32 and the second contact part (d2 / d1). By multiplying = r by the curve P, a curve R (y = F (x) = f (x−m) × r) shown in FIG. 9 is obtained. This curve R becomes the shape of the second guide portion 32 obtained by the target convex shape.

  In this manner, the shape of the second guide portion 32 is obtained by correcting the gap between the contact point p2 between the second roller 24 and the second guide portion 32 and the contact point p3 between the polishing body 10 and the object 90 to be polished. Therefore, when this gap does not exist, that is, when the contact point p2 between the second roller 24 and the second guide portion 32 and the contact point p3 between the polishing body 10 and the polishing object 90 are located at the same position in the width direction and the front-rear direction. In the case where both contact points are arranged in the vertical direction, such correction is not necessary. For example, by placing the second roller 24 and the second guide portion 32 on the upper side of the polishing body 10, the contact points can be arranged in the vertical direction.

  As described above, the shape of the second guide portion 32 obtained by this procedure is based on the relative positional relationship between the polishing object 90 and the guide member 30 that are attached to the fixed base 60 of the apparatus. It is set (if the positional relationship changes, the shape of the second guide portion 32 to be set also changes). Therefore, the relative positional relationship between the polishing object 90 and the guide member 30 in the width direction and the front-rear direction is calculated in advance by the positioning elements of the polishing object 90 and the guide member 30 provided on the fixed base 60. In addition, it is necessary to set the shape of the second guide portion 32 by the above procedure.

(Main effects of this embodiment)
According to the polishing apparatus 1 concerning this embodiment demonstrated above, there exist the following effects.

  In the polishing apparatus 1, the support member 20 that supports the polishing body 10 has a first contact portion that contacts the first guide portion 31 that is linear, and a second guide that is a curved shape obtained from a target convex shape. A second contact portion that contacts the portion 32. At the time of polishing, the second contact portion provided on the side close to the location where the object to be polished 90 and the polishing body 10 are in contact with each other is based on the location where the first guide portion 31 and the first contact portion are in contact with each other. It moves along the part 32, and the contact point of the grinding | polishing body 10 and the grinding | polishing target object 90 moves with the same locus | trajectory as the target convex shape. That is, since the location where the polishing body 10 and the object to be polished 90 are in contact with each other is stabilized, the target shape can be created more precisely. Further, since the first contact portion is brought into contact with the first guide portion 31 and the second contact portion is brought into contact with the second guide portion 32, it is only necessary to move the support member 20 that supports the polishing body 10, so that the processing operation is simple. It is.

  In addition, the guide member 30 is positioned at different heights in the guide member 30, and the contact member is set at different heights in the support member 20 according to the guide member 30. By simply pressing against the member 30, the first contact portion comes into contact with the first guide portion 31 and the second contact portion comes into contact with the second guide portion 32, so that the machining operation becomes easier.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

  In the above embodiment, it has been described that rollers (first roller and second roller) are used as the contact portions, but the present invention is not limited to such rollers. For example, the portion that contacts the guide portion may be a spherical surface. Moreover, it is also possible to supply a lubricant as appropriate in order to improve slidability. In addition, by changing the size of the second contact portion (second roller) in the width direction according to the shape of the second guide portion (uneven shape), various shapes (target shapes) of polishing objects can be obtained. Can be processed. For example, even when a recess is present in a part of the second guide part, the size of the second contact part in the width direction may be set so as to be able to enter the inside of the recess. .

DESCRIPTION OF SYMBOLS 1 Polishing apparatus 10 Polishing body 11 Contact surface 20 Support member 23 First roller 24 Second roller 30 Guide member 31 First guide part 32 Second guide part 40 Motor 90 Polishing object 91 Polishing surface

Claims (5)

A polishing body for polishing an object to be polished;
A support member for supporting the abrasive,
A guide member for guiding the support member on which the polishing body is supported so that the polishing shape of the object to be polished becomes a target shape;
With
The guide member is
A first guide portion formed in a straight line along the width direction which is a reference direction;
A second guide portion formed in a curved shape obtained based on the target shape;
Have
The support member is
A first contact portion that contacts the first guide portion;
A second contact portion that is provided at a position closer to a contact point between the object to be polished and the polishing body than the first contact portion, and that contacts the second guide portion;
Have
By moving the support member and the polishing body supported by the first guide portion and the first contact portion, and the second guide portion and the second contact portion in the width direction, A polishing apparatus, wherein a contact point between the polishing body and the object to be polished is moved along the same locus as the target shape. 2. The polishing according to claim 1, wherein the curve shape y = F (x) of the second guide portion is a shape calculated from the target shape y = f (x) by the following expression. apparatus.
F (x) = (f (x−m)) × r
However, in the above formula,
x is the position in the width direction,
y is the position in the front-rear direction,
m is the distance from the contact point between the polishing body and the object to be polished in the width direction (x-axis direction) to the contact point between the second guide part and the second contact part,
r is a linear distance d1 from a contact point between the first guide part and the first contact part to a contact point between the polishing body and the object to be polished, and a contact point between the first guide part and the first contact part. A ratio d2 / d1 of the linear distance d2 between the second guide part and the contact point of the second contact part is shown. The target shape is a convex shape,
3. The polishing apparatus according to claim 1, wherein the second guide portion is formed in a curved shape that protrudes toward the support member in a front-rear direction orthogonal to the width direction. . The guide member is formed by arranging the first guide portion and the second guide portion in a height direction orthogonal to the width direction and the front-rear direction,
4. The polishing apparatus according to claim 1, wherein the first contact portion and the second contact portion are provided at different heights in the support member. 5.   The polishing body is a cylindrical member positioned between the first contact portion and the second contact portion in the width direction, and the side surface of the rotating cylinder contacts the polishing object. The polishing apparatus according to any one of claims 1 to 4, wherein the polishing object is supported by the support member so that the object to be polished is polished.

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