JPH0639733A - Plane polishing device - Google Patents

Abstract

PURPOSE:To provide a plane polishing device which facilitates exchange of a grinding wheel, performs reliable attachment, and sharply improves working efficiency owing to the above. CONSTITUTION:In a plane polishing device which is provided with a lapping disc 1 being of structure where a solid grinding wheel 4 is mounted on a lapping surface plate 2, solid grinding wheels 4 are disposed to a plurality of sections into which the surface of the surface plate 2 is partitioned by means of lines crossing the central part of the surface plate and mounting plate division pieces 3 having respective plane shapes substantially equal to each other. The mounting plate division pieces 3 are removably mounted on the lapping surface plate 2.

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 mounted, the grindstone pieces, adhesive, etc. remaining on the surface of the lapping platen are completely peeled and removed to uniformly clean 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 grindstone is disposed on the mounting plate divided pieces each having a planar shape substantially equal to a plurality of areas in which the surface plate surface is divided by a line crossing the central portion or the inner circle. The mounting plate divided pieces are 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 configured by screwing a plurality of substantially fan-shaped solid whetstones 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,
Two screw holes 5 are formed in each, as shown in FIG. On this mounting plate divided piece 3, a substantially whetstone-shaped solid grindstone 4 having the same shape as the divided piece 3 is stacked with the screw holes 4a aligned with the screw holes 5 of the mounting plate divided piece 3, and in that state As shown in FIG. 3, the screw 6 is inserted into the screw hole 4 a and screwed onto the lapping plate 2. 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 disc 1 in operation is exhausted, or when it is necessary to replace the whetstone type and count, the solid whetstone 4 is removed from the lapping disc 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.

The material of the mounting plate divided piece 3 is not particularly limited, but considering the lightness, strength and cost,
Light structural materials such as light metals such as aluminum alloys, plastic plates and glass fiber reinforced plastic plates are suitable. Furthermore, it is desirable that the number of the mounting plate divided pieces 3 mounted on the surface of the lapping disc 1 be appropriately changed depending on the size of the lapping disc 1. For example, outer diameter 1000mm
A relatively small division such as 16 to 24 divisions for the above large discs and 2 to 16 divisions for smaller discs smaller than that is sufficient.

FIG. 4 is a block diagram of another embodiment of the present invention. In the figure, 7 is a lapping plate, 8 is a mounting plate divided piece, 9 is a cylindrical grindstone, and 10 is a lapping disk. That is, as shown in FIG. 5, the lapping disc 10 of this flat surface polishing apparatus has a columnar cylindrical grindstone 9 on a substantially fan-shaped mounting plate divided piece 8, and its top polishing surface is located on the same plane, and It is constructed by implanting at a predetermined interval from each other, and inserting the screw 12 into the screw 11 provided on the substantially fan-shaped mounting plate divided piece 8 and screwing it onto the lapping plate 7 as shown in FIG. ing.

As described above, this flat polishing apparatus forms the lapping disk 10 by arranging the cylindrical grindstones 9 having a low contact resistance on the outer peripheral surface at intervals, so that the polishing powder and the falling powder are removed. At the same time as the abrasive grains are produced, they are quickly discharged through the gap between the cylindrical grindstones 9 to the outside of the lapping disk 10. Therefore, the cylindrical grindstone 9 is effectively prevented from being clogged, and the initial polishing accuracy and polishing efficiency can be maintained for a long time without the need for dressing.

FIG. 7 is a plan view of a metal lapping plate used in still another embodiment of the present invention. In the figure,
The lapping platen 13 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 1
3 is divided into a plurality of sections A to H by virtual line segments a to d crossing the center J or the inner circle K thereof. 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. Each area of the surface plate 13 has a screw hole 21.
Has been drilled. As shown in FIG. 8, mounting plate divided pieces 13a having a plane shape substantially equal to the respective areas are attached to the divided areas of the surface plate of the surface plate 13. 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 there is a slight error in and that it is allowed. The mounting plate divided piece 13a corresponds to a substantially fan-shaped area of the surface plate surface and has a screw hole 14 that matches the screw hole 21. As shown in FIG. 9, two solid whetstones 15, 15 are provided on the surface of the mounting plate divided piece 13a.
a is adhesively fixed. These solid whetstones 15 and 15a
Each of the two sets has a planar shape that is substantially the same as the fan shape of the mounting plate divided pieces 13a. 15b is the above-mentioned two solid grindstones 1
In the gap formed between 5 and 15a, the polishing powder and the falling abrasive grains are discharged to the outside by the centrifugal force due to the rotation. Reference numeral 16 is a screw insertion hole 16 formed in each of the solid whetstones 15 and 15a so as to match the screw hole 14.

As shown in FIG. 10, the mounting plate divided piece 13a having the solid whetstones 15 and 15a adhered thereon is perforated in the surface plate 13. As shown in FIG. The bolt 17 is screwed into and screwed into the bolt hole 21. In this way, the solid grindstone 1 is formed on the entire surface of the surface plate 13.
Fig. 1 shows a lapping disk 18 having 5,15a mounted thereon.
Shown in 1. The flat surface polishing apparatus provided with the lapping disk 18 has the same effects as the flat surface polishing apparatus of the above-described embodiment.

[0015]

According to the flat polishing apparatus of the present invention,
The work of attaching or exchanging the grindstone to the lapping disk of the grindstone 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 apparatus 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. However, in the apparatus of the present invention, one set of separate mounting plate pieces is prepared. However, by preliminarily adhering the grindstone to this, the time required for exchanging the grindstone can be significantly shortened. Furthermore, by preparing grindstones of different types and counts as needed, they can be replaced at any time, and one polishing device can be used for multiple purposes. Further, even if one of the whetstones is damaged or abnormal quality is mixed for some reason, only that part can be easily replaced, which is economical. In addition, 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.

[Brief description of drawings]

FIG. 1 is a perspective view of a lapping disk used in an embodiment of the present invention.

FIG. 2 is an explanatory diagram of its constituent parts.

FIG. 3 is an explanatory diagram of its constituent parts.

FIG. 4 is a perspective view of a lapping disk used in another embodiment of the present invention.

FIG. 5 is an explanatory diagram of its constituent parts.

FIG. 6 is an explanatory diagram of its constituent parts.

FIG. 7 is an assembly explanatory diagram of a lapping disk used in still another embodiment of the present invention.

FIG. 8 is an assembly explanatory diagram of a lapping disk used in still another embodiment of the present invention.

FIG. 9 is an assembly explanatory diagram of a lapping disk used in still another embodiment of the present invention.

FIG. 10 is an assembly explanatory diagram of a lapping disk used in still another embodiment of the present invention.

FIG. 11 is a perspective view of the lapping disk.

[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 plurality of sections are arranged on a mounting plate divided piece having substantially the same planar shape with a solid grindstone, and the mounting plate divided piece is detachably mounted on the lapping platen. Surface polishing machine. 2. The surface polishing apparatus according to claim 1, wherein a line crossing 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 flat 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.