JPH0834737B2 - Flat polishing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat polishing apparatus such as a lapping polishing machine for bringing an object to be polished into contact with the surface of a solid grindstone and performing grinding or polishing by the action of the solid grindstone.

[0002]

2. Description of the Related Art Conventionally, when a solid grindstone is mounted on a lapping grinder, a method is generally used in which a solid grindstone is adhered by applying an adhesive, hot melt or the like on the surface of a metal surface plate which rotates in a circumferential direction. It was target.

[0003]

However, in this method, since the work of adhering the grindstone to the surface of the lapping platen without removing the large lapping plate from the polishing device is considerably difficult, the adhesive force is weak, There were some parts that were not adhered, so perfect adhesion was not possible, and there was a problem of peeling and falling off during polishing work. Further, it is extremely difficult to replace the broken grindstone. This tendency was remarkable especially when the type of the polishing machine was a double-sided lapping polishing machine in which the polishing surfaces of two lapping disks were faced and combined.

Further, when all the grindstones are used up by the polishing work and a new grindstone is installed, the grindstone pieces, adhesive, etc. remaining on the surface of the lapping platen are completely peeled and removed to uniformly purify the surface. It is necessary to install it later,
In order to perform this work on the entire surface of a large surface plate, it becomes an extremely large-scale work of disassembling the device and removing the surface plate, which requires a lot of labor and time. This caused a large decrease in operating rate and an increase in operating costs.

The present inventors have conducted intensive studies to solve the above-mentioned problems of the conventional lapping and polishing machine, and have completed the present invention. It is an object of the present invention to provide a flat surface polishing apparatus in which the grindstone can be easily replaced and can be reliably mounted, and thereby the operation rate can be significantly improved.

[0006]

In order to achieve the above object, the surface polishing apparatus of the present invention comprises a lapping disk having a structure in which a solid grinding stone is mounted on a lapping plate having a circular disk shape or an annular disk shape. In the flat polishing apparatus, the solid whetstone is arranged on a mounting plate divided piece having a planar shape substantially equal to a plurality of areas obtained by dividing the surface plate surface by a line crossing a central portion or an inner circle thereof. The groove surface extends diagonally from one edge in the radial direction to the other edge in the radial direction so that the end of the groove rearward in the rotational direction is farther from the center of rotation than the end of the front groove in the rotational direction. The oblique groove is formed, and the mounting plate divided piece is detachably mounted on the lapping plate.

Next, the present invention will be described in detail based on embodiments.

[0008]

FIG. 1 shows an embodiment of the present invention. In the figure, reference numeral 1 denotes a lapping disk, which is constructed by screwing a plurality of substantially fan-shaped solid grindstones 4 to a lapping platen 2 with a central hole through a mounting plate divided piece 3. 3a is a gap formed radially between the solid whetstones 4 and discharges the polishing powder and the falling abrasive powder to the outside. In this case, each of the mounting plate divided pieces 3 has a planar shape (substantially equal area) of a plurality of areas (all having the same area) formed by partitioning the lapping platen 2 by a plurality of virtual line segments that cross the center thereof. It has the same plane shape as the fan shape and has compatibility,
Each has two screw holes (hidden and invisible). On this mounting plate divided piece 3, a substantially fan-shaped solid grindstone 4 having the same shape as that of the divided piece 3 is stacked by aligning the screw holes 4a with the screw holes of the mounting plate divided piece 3, and in that state, the screw (Hidden and invisible) is inserted into the screw hole 4a, and the mounting plate divided piece 3 is screwed onto the lapping platen 2. As shown in FIG. 1, the solid grindstone 4 has a groove on the surface of the grindstone, which is located on the rear side in the rotational direction from the end of the groove on the front side in the rotational direction from one side edge in the radial direction to the other side edge in the radial direction. Has an oblique groove 15b extending obliquely so that its end portion is farther from the center of rotation. The flat surface polishing apparatus provided with such a lapping disc 1 polishes the surface of the workpiece based on the wet method while relatively rotating the lapping disc 1 and the workpiece (not shown).

In this apparatus, two sets of mounting plate divided pieces 3 are prepared for one lapping disk 1, and one set is always reserved. Then, while the polishing apparatus is in operation, the surface of the spare mounting plate divided piece 3 is cleaned, and then the solid grindstone 4 is mounted to prepare for it. When the whetstone 4 of the lapping disk 1 in operation is used up, or when it is necessary to replace the type and number of the whetstone, the solid whetstone 4 is removed from the lapping disk 1 together with the mounting plate divided piece 3,
Replace with a spare set. By doing so, the operation can be restarted easily and quickly.

Although the material of the mounting plate divided piece 3 is particularly limited, in view of lightness, strength and cost, a lightweight structure such as a light metal such as an aluminum alloy, a plastic plate or a glass fiber reinforced plastic plate is used. Materials are preferred. Further, it is desirable that the number of the mounting plate divided pieces 3 mounted on the surface of the lapping platen 2 be appropriately changed depending on the size of the lapping disc 1. For example, outer diameter 100
A relatively small division such as 16 to 24 divisions for a large disc of 0 mm or more and 2 to 16 divisions for a smaller disc of less than that is sufficient.

FIG. 2 is a plan view for explaining the lapping platen 2 in detail. In the figure, the lapping platen 2 has a circular plate shape or an annular plate shape in which a central inner circular portion is formed as a through hole. This surface plate 2 is the center J
Alternatively, it is divided into a plurality of sections A to H by virtual line segments a to d crossing the inner circle K. In this case, the imaginary line segments a to d are straight lines, and it is most preferable to partition the sections A to H into substantially fan-shaped sections having the same shape and the same area. Plate 2 above
A screw hole 5 is formed in each of the areas. As shown in FIG. 1, mounting plate division pieces 3 having a planar shape substantially equal to the respective areas are attached to the divided areas of the surface plate of the surface plate 2. The term "substantially equal" as used herein means that, for example, it is necessary to attach trapezoidal mounting plate divided pieces to a substantially fan-shaped area, or to provide a slight gap between adjacent mounting plate divided pieces. It means that a small error in is allowed. This mounting plate divided piece 3 corresponds to the substantially fan-shaped area of the surface plate,
It has a screw hole that matches the screw hole 5. As shown in FIGS. 3 and 4, the solid grindstone 4 is provided on the surface of the mounting plate divided piece 3.
Is also fixed by adhesion. In the figure, 4a is
A screw hole for attaching the solid grindstone 4 to the lapping platen together with the mounting plate divided pieces 3, 15b is a slant groove formed in the solid grindstone 4, and discharges abrasive powder and fallen abrasive grains to the outside by centrifugal force due to rotation. To work.

[0012]

According to the flat polishing apparatus of the present invention,
The work of attaching or exchanging the grindstone to the lapping disk becomes extremely easy and quick, and the burden on the operator can be significantly reduced, and at the same time, the operating rate of the device can be greatly improved. That is, conventionally, in order to bond the grindstone to the lapping platen, it has been necessary to suspend the operation for at least one day to perform the peeling and bonding work. In the device of the present invention, one set of separate mounting plate divided pieces is prepared. By preliminarily adhering the grindstone to this, the time required for exchanging the grindstone can be significantly shortened. Furthermore, if you prepare a whetstone with a different type and count as needed, you can replace it at any time.
It is also possible to use one polishing device for multiple purposes.
Further, even if one of the grindstones is damaged or abnormal quality is mixed due to some reason, only that portion can be easily replaced, which is economical. Also, since the grindstone bonding work is performed on the mounting plate divided pieces that are relatively lightweight and small and easy to handle, careful work can be performed, and accidents due to bonding mistakes and bonding defects are almost eliminated, improving the operation rate, Combined with the labor saving, it is possible to obtain remarkable effects such as a significant reduction in operating costs.
Moreover, in the present invention, on the grindstone surface of the fixed grindstone, from the one side edge in the radial direction to the other side edge in the radial direction, the end of the groove in the rotation direction behind the end of the groove in the rotation direction is, The slant groove is formed so as to be farther from the center of rotation. Therefore, the polishing dust, etc. generated on the surface of the grindstone enters the slanted groove and is moved vigorously from the end of the groove in the front in the rotating direction to the end of the groove in the rear in the rotating direction by the centrifugal force when the lapping disk rotates. , Discharged to the outside. Therefore, clogging of polishing dust or the like does not occur, and as a result, the life of the grindstone can be extended.

[Brief description of drawings]

FIG. 1 is a perspective view of a lapping disk according to the present invention.

FIG. 2 is an assembly explanatory diagram of a lapping disk used in an embodiment of the present invention.

FIG. 3 is an assembly explanatory diagram of a lapping disk used in an embodiment of the present invention.

FIG. 4 is an assembly explanatory diagram of a lapping disk used in an embodiment of the present invention.

[Explanation of symbols]

 1 Lapping disk 2 Lapping plate 3 Mounting plate division piece 4 Solid whetstone

Claims (3)

[Claims] 1. A flat polishing apparatus comprising a lapping disk having a structure in which a solid grindstone is mounted on a lapping plate having a circular plate shape or an annular plate shape, and the surface plate surface is divided by a line crossing a central portion or an inner circle thereof. the solid grindstone disposed on the mounting plate divided piece having a plurality of zones and their <br/> respectively substantially equal planar shape, the radial one side edge to the grinding surface of the solid grinding wheel in the radial direction toward the other side edge, in the rotational direction in front of
The end of the groove behind the end of the groove in the direction of rotation is farther from the center of rotation.
The flat polishing apparatus is characterized in that a diagonal groove extending diagonally is formed so that the mounting plate divided piece is detachably mounted on the lapping plate. 2. The flat polishing apparatus according to claim 1, wherein a line that crosses the central portion or the inner circle is a straight line, and the surface plate surface is divided into substantially fan-shaped areas having the same area. 3. The surface polishing apparatus according to claim 1, wherein the mounting plate divided piece is made of a lightweight structural material made of aluminum alloy, plastics or glass fiber reinforced plastics.