JPS6234690Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a surface grinding device.

Conventionally, single-sided processing of a workpiece has been carried out using a surface grinding device such as a single-sided wrapping machine or a single-sided polishing machine as shown in FIG. This is done by attaching a workpiece mounting block c to the pressure plate b at the lower end of the four processing axes a, and processing the workpiece with the block c attached on the surface plate d while being pressurized by the processing axis a. However, what is particularly important in this type of machining is how quickly the workpiece can be taken out and cleaned at the same time as the machining is completed. That is, if the workpiece is not taken out quickly, the abrasive grains tend to stick to the workpiece in the wrapping process due to drying, and the quality of the workpiece surface tends to deteriorate due to etching in the polishing process.

However, in the above-mentioned conventional surface grinding apparatus, the workpieces are replaced and cleaned all manually, so it is necessary to quickly remove and clean the blocks c, that is, the workpieces, for the four machining axes a that finish machining at the same time. In order to do this, it is necessary to rely on a lot of manual labor, which is inefficient and at the same time not suitable for mass production. Moreover, the workers themselves become a source of contamination or come into contact with the machined surface when removing the workpiece. There were drawbacks such as a tendency to deteriorate quality.

In view of the above, the purpose of the present invention is to provide a surface grinding device that can quickly and automatically clean and replace a workpiece that has been processed. A support arm equipped with a pressure plate that can be raised and lowered by a cylinder and an attachment/detachment means that can automatically attach and detach a workpiece mounting block to the pressure plate is installed on the machine base. It is rotatably arranged between the position and the replacement section of the workpiece mounting block provided on the side of the machine base, and a tank for cleaning the workpieces that have been processed is installed inside the tank provided in the replacement section. The present invention is characterized in that a disk serving as both a member and a pedestal for the workpiece mounting block is rotatably provided by a motor, and a positioning plate is provided when the workpiece mounting block is replaced.

Hereinafter, in order to explain the embodiment of the present invention in detail based on the drawings, in FIGS. A surface plate 2 for polishing a workpiece is rotatably arranged, and a plurality of support arms 3 are arranged at equal intervals around the surface plate on the side of the machine base 1. Replacement parts 4 for workpiece mounting blocks 5 are formed at positions corresponding to the support arms 3, respectively.

The support arm 3 has its base end fixed to a rotatable vertical shaft 6 erected on the machine base 1, and
The vertical shaft 6 is driven by the cylinder 7 connected to the
A cylinder 10 supports a pressure plate 9 that can move vertically at the tip of the support arm 3, and the support arm 3 and the pressure plate 9 The plate 9 is provided with an attachment/detachment means 11 for automatically attaching and detaching the block 5, and the work 8 (FIG. 5) is attached to the lower surface of the block 5 by adhesive.

The attachment/detachment means 11 can adopt a method of attracting the block 5 by vacuum or magnetic force, or any other method such as electrical or mechanical, but in this embodiment, a mechanical method is adopted. There is. That is, the fifth
As shown in detail in the figure, a locking piece 13 is rotatably attached to a plurality of locations on the peripheral edge of the pressure plate 9, and a circumferential groove 14 of the block 5 is attached to the tip of the locking piece 13.
A hook portion 15 is provided that engages with the locking piece 13.
A locking piece 1 is inserted between the base end 16 of the pressure plate 9 and the pressure plate 9 in the direction in which the hook portion 15 engages with the circumferential groove 14.
A release ring 18 is disposed on the support arm 3 and positioned above the base end of the locking piece 13, and is movable up and down by a cylinder 19.

In addition, in the exchange section 4, a disk 21 with an abrasive cloth glued to the upper surface is disposed inside a tank 20 provided on the machine base 1 so as to be rotatable around a vertical axis by a motor 22, and the A positioning plate 2 with a hole 24 large enough to fit the block 5 in any way.
3 is positioned above the disc 21 and fixedly attached to the tank wall, and a supply pipe 25 for supplying cleaning liquid or pure water is provided on the disc 21, so that the disc 21 is fixedly attached to the tank wall. It is configured to serve both as a member for cleaning finished workpieces and as a pedestal when replacing the block 5.

In a single-sided polishing machine having a chess configuration, when processing a workpiece, the support arm 3 is driven by the cylinder 7 and rotates to the processing position shown by the solid line in FIGS. As the shear plate 9 descends, the workpiece 8 attached to the lower surface of the block 5 is pressed against the surface plate 2 with a constant pressure.

When the machining of the workpiece is completed, the pressure plate 9 is raised and the support arm 3 is rotated to the exchange part 4 as shown by the chain line in FIG. 5 is pressed onto the rotating disc 21 through the hole 24 of the positioning plate 23 as shown in FIG. Cleaning is performed.

When the cleaning of the workpiece is completed, first the disk 21
The rotation of the cylinder 19 is stopped, and then the rotation of the cylinder 19 is stopped.
Since the release ring 18 descends and presses the base end 16 of the locking piece 13, the locking piece 13
The block 5 is rotated to the position shown by the chain line (Fig. 5) against the biasing force of the block 5, and at the same time as the block 5 is released, the pressure plate 9 and the release ring 18 are simultaneously raised by the cylinders 10 and 19. do. Then, when the pressure plate 9 rises, the support arm 3 rotates to the processing position and stands by. Meanwhile, the disc 2 is removed from the pressure plate 9.
The block 5 left on the positioning plate 23 is taken out by the operator, and a new block with the workpiece to be machined is fitted into the hole 24 of the positioning plate 23 and replaced with the disk 21. set above.

When a new block is set, the support arm 3 that has been on standby is rotated again to the replacement part 4, and the pressure plate 9 is lowered and comes into contact with the block 5 on the disc 21. Then, the locking piece 13 is pushed open by the shoulder 26 (FIG. 5) of the block 5, and the hook 15 is pushed open.
engages in the circumferential groove 14, thereby automatically attaching the block 5 to the pressure plate 9.

As described in detail above, according to the present invention, a replacement part for the workpiece mounting block is provided on the side of the machine base, and the workpiece mounting block is provided with a disc that serves as a workpiece cleaning member and a block pedestal. Since the support arm that supports the polishing plate is configured to be able to rotate between the machining position and the above-mentioned exchange section, the support arm can be rotated to the above-mentioned exchange section as soon as the machining of the workpiece is completed, and the workpiece can be immediately cleaned and cooled. Not only can this be done, but the workpiece that has been cleaned and cooled can be replaced with the block in its original position. Therefore, cleaning and replacement of the workpiece can be done without relying on many people. It can be done mechanically and quickly.

Furthermore, since there is no need to separately provide a workpiece cleaning section and a replacement section, the number of members and space can be omitted, the structure can be simplified, and the apparatus can be downsized.

[Brief explanation of the drawing]

FIG. 1 is a front view of a conventional example, FIG. 2 is a front view of essential parts showing an embodiment of the present invention, and FIG. 3 is a plan view thereof.
FIG. 4 is a front view of the main part at the same position as FIG. 2 in a different state of use, and FIG. 5 is a partially enlarged view of FIG. 4. DESCRIPTION OF SYMBOLS 1...Machine base, 2...Surface plate, 3...Support arm, 4...Replacement part, 5...Block, 8...Work, 9...Pressure plate, 11...Attachment/detaching means, 20...Tank, 21...
Disc, 23... positioning plate.

Claims (1)

[Scope of utility model registration request] A support arm equipped with a pressure plate that can be raised and lowered by a cylinder and an attachment/detachment means that can automatically attach and detach a workpiece mounting block to the pressure plate is attached to a machine base equipped with a surface plate for processing the workpiece. It is rotatably arranged between the processing position of the workpiece by the surface plate and the replacement part of the workpiece mounting block provided on the side of the machine base, and the inside of the tank provided in the said replacement part is used to store the finished workpiece. A disc is rotatably provided by a motor and serves as a member for cleaning the workpiece while it is attached to the pressure plate by the workpiece mounting block and a pedestal for replacing the workpiece mounting block. A surface grinding device characterized in that a positioning plate is provided for placing a mounting block in a fixed position on a disc.