JPH0313032B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a rotary grindstone for polishing a curved surface, which has a curve in the direction perpendicular to the feed direction and is divided into a plurality of pieces in the height direction of the surface to be polished of a workpiece that extends in the feed direction. It relates to a curved surface polishing machine whose purpose is to polish the complex surface of a workpiece by sequentially performing multiple polishing processes depending on the selection. A fixed rotating shaft 13 is provided so as to be freely movable toward or away from the material feeding path 2, and a radial end is provided on the rotating shaft 13 to the side of the polished surface b of the side surface of the workpiece sent to the material feeding path 2. A movable plate 18 is provided with a rotary disk 12 whose edges correspond to each other, a plurality of support plates 14 are vertically disposed at different angles from the edge of the rotary disk 12, and each support plate 14 can be adjusted to move up and down. A plurality of curved surfaces corresponding to partial surfaces _b1 to _b4 , which are virtual vertical divisions of the polished surface b of the workpiece, are provided on the vertical axis of the motor attached to each moving plate 18. Polishing rotary grindstone 22a-22
b is attached, and any one of the rotating grindstones 22a to 22d is selectively stopped at a position corresponding to any one of the partial surfaces b ₁ to b ₄ of the surface to be polished b by rotating and stopping the rotating shaft 13. The present invention relates to a curved surface polishing machine characterized by:

In order to polish a complex curved surface that is placed in the vertical direction perpendicular to the feed direction of the workpiece and extends in the feed direction, a complex curved surface that corresponds to the polished surface of the workpiece is precisely formed on a single rotary grindstone. It is difficult to form.

Conventionally, the complex surface to be polished of the processed material was virtually divided vertically, multiple grinding wheels were created corresponding to each divided surface, and the grinding wheels were replaced after each polishing process, or As disclosed in Japanese Utility Model Application No. 52-164796, a plurality of presser pad devices are provided in parallel on the inner surface of a sander belt, and each of these pad devices has a plurality of divided pads corresponding to each of the divided surfaces to be polished. These pads were attached to the desired position, and each pad polished the surface of the workpiece through a sander belt in one polishing process. However, in the latter case, even if a split pad for curved surface polishing can be used instead of a split pad, it is possible to use a rotary grindstone for grinding curved surfaces that is split into parts so as to be in direct contact with the surface to be polished of the workpiece. When the polisher is used, four or more presser devices must be arranged in parallel, which has the disadvantage that the curved surface polisher becomes large and expensive.

The present invention allows the grindstone to be replaced every polishing process,
Alternatively, the angle of the rotary disk 12 can be changed as described above, and a plurality of grindstones 22a to 22a for polishing curved surfaces can be used instead of providing a plurality of presser devices, which causes an increase in size.
22d is installed by changing the axial position, and after polishing is completed with one grindstone, the entire surface to be polished can be polished using another curved surface grinding wheel without the need for replacement work. It is something.

1 to 4 show an embodiment of the present invention, and 3 in the figure shows an embodiment of the present invention.
is a support frame on the machine base 1 which is arranged horizontally behind the material feeding passage 2. An air cylinder 4 facing the direction of the material feeding passage 2 is placed on the frame 3, and the front end of the piston rod is placed on the frame 3. Two rods 5,5 are attached to the moving plate in parallel and supported slidably by bearings 6,6.

Reference numeral 7 denotes a support housing provided at the front end of the rods 5, 5, and a rotating shaft 13 is fitted into a cylinder 8 projecting upward from the support housing 7 to be pivotally supported. The lower end surface of the rotating shaft 13 is freely rotatably supported by the tip of a swingable engagement claw 9 attached to the support housing 7, and the engagement claw 9 is supported by a support bolt 10 screwed into the support housing 7. Swinging and rotating axis 1
By changing the height of the support 3, the vertical position of the shaft 13 can be adjusted. The rotary disk 12 is fixed to a rotary shaft 13, and can be stopped at several angles within the cylinder 8 by rotating the shaft 13.The rotary disk 12 is made of four stripes at 90° intervals, which are perforated in the vertical direction of the rotary shaft 13. An ejection moderation provided on the tube 8 in one of the engagement grooves 13a fits the ball 11 and holds the stop position.

Four U-shaped support plates 14 are attached vertically to the radial edge of the rotary disk 12 at 90° intervals, and dovetail-shaped guide grooves 15 are provided on the outer surface of each support plate 14 as shown in FIG.
is provided, and elongated guide holes 16, 16 are provided in the groove surface.
Drill at right angles (see Figure 4). Said guide groove 1
A movable plate 18 is fitted to the support plate 5 so as to be freely movable.
4, the screw rod 17 supported in the vertical direction is screwed onto the movable plate 18, and the operating portion 17a of the screw rod 17 is rotated to adjust the vertical movement of the movable plate 18 through the guide groove 15. The moving plate 18 is provided with four circular holes 19 communicating with the guide holes 16, 16, and the cylinder pieces 20 are fitted into the circular holes 19 and the guide holes 16, and the motor is inserted into the through hole of the cylinder piece 20. Insert the four foot rods 24 protruding from the rear surface of the foot rod 21, screw nuts into the screws at the rear ends of the foot rods 24, and then insert the springs 23, 23 between the motor 21 and the cylinder piece 20. establish. Spring 23,2
3 is for absorbing the impact generated during polishing.
One of rotary grindstones 22a to 22d for grinding curved surfaces is attached to the vertical drive shaft of each motor 21, and these are arranged at equal angular intervals above the rotary disk 12, as shown in FIG.

As clearly shown in FIG. 5, the rotary grindstones 22a to 22d for polishing curved surfaces have partial surfaces b ₁ to b ₄ that are virtually divided into a plurality of parts in the cross-sectional direction of the curved surface b to be polished of the workpiece a. It is necessary to change the height direction position corresponding to each partial surface. To do this, the screw rod 17 for each support plate 14 is rotated by the operation part 17a, and the movable plate 18 and the grindstone motor 21 are moved up and down by the guide groove 15 to adjust the height of the rotary grindstones 22a to 22d. This causes a positional difference as shown in FIGS. 2 and 5.

The operation of the above embodiment will be explained.

The model material is placed in the material feeding path 2, and the rotary plate 12
The vertical position of the (rotary shaft 13) is adjusted with the support bolt 10, and the vertical position of each of the rotary grindstones 22a to 22d is adjusted as described above with the screw rod 17, so that each of the curved surfaces b to be polished of the workpiece a is adjusted. A test is performed to correspond to the partial surfaces b ₁ to _{b 4} of .

To perform polishing, the rotary disk 12 is rotated manually or by power, the rotary grindstone 22a and the rotary shaft 13 are first held in the polishing position by the moderation ball 11, and the workpiece a is pressed against the upper surface of the material feeding path 2. The pressing belt 40 holds the material so that it does not move in the direction perpendicular to the feeding direction, and the material is fed by the feeding belt 41, and the air cylinder 4 is extended to press the rotary grindstone 22a against the partial surface _b1 of the curved surface b to be polished. After polishing the surface b ₁ and then contracting the air cylinder 4, the rotary disk 12 is rotated 90 degrees and the rotary grindstones 22b to 22d are polished.
are sequentially moved in the direction of the workpiece a according to the previously described procedure, and are sequentially pressed against the partial surfaces b ₂ to b ₄ for polishing.

In order to tilt the rotary grindstones 22a to 22d so as to contact the curved surface b to be polished from a substantially perpendicular direction, the support frame 3 is made tiltable with respect to the machine base 1.

The above applies when polishing the partial surface b ₁ of a large number of workpieces a and then sequentially polishing the partial surfaces b ₂ ... b ₄ , or when polishing the partial surfaces b ₁ to _{b 4} for each workpiece a. It can also be used when polishing.

As clarified by the above description, the present invention provides a rotating shaft 13 fixed on a curved surface polishing device that rotates at a plurality of angles so as to be freely movable toward or away from the material feeding path 2. Its rotation axis 13
Polished surface b on the side of the workpiece sent to the material feed path 2
A rotary disk 12 with matching edges is installed on the side of the
A plurality of support plates 1 are provided on the radial edge of the rotary disk 12.
4 are installed vertically at different angles, each support plate 14 is provided with a movable plate 18 that allows vertical movement adjustment, and the vertical axis of a motor attached to each movable plate 18 is
A plurality of rotary grindstones 22a to 22b for polishing curved surfaces corresponding to partial surfaces _b1 to _b4 , which are virtual vertically divided surfaces b of the workpiece to be polished, are attached, and the plurality of rotary grindstones 22a for polishing are mounted. - Any one of 22d,
By rotating and stopping the rotating shaft 13, the rotating shaft 13 is selectively stopped at a position corresponding to any of the partial surfaces _b1 to _b4 of the surface to be polished b, and a large number of rotating grindstones 22a to 2 are rotated and stopped.
2d, the required rotating grindstone 22
a to 22d can be easily and quickly replaced by moving and rotating the rotary shaft 13, and adjusting the heights of the axial positions of a plurality of rotary grindstones to be different from each other can be easily done by adjusting the movement of the movable plate 18. The most important and essential adjustments can be made easily, and the installation of the rotating grindstones 22a to 22d can be changed for each polishing process, or the adjustment can be made in accordance with the number of the rotating grindstones 22a to 22d. There is an advantage that there is no need to increase the size of the curved surface polisher by installing a plurality of pressers in parallel.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the present invention, FIG. 1 is a plan view, FIG. 2 is a partially cutaway side view, FIG. 3 is a longitudinal sectional view showing the attachment of the grindstone motor 21, and FIG. 3 is a sectional view taken along the line A-A in FIG. 3, and FIG. 5 is a longitudinal sectional side view showing the relationship between the curved surface b to be polished and the rotating grindstone. 4→Air cylinder, 7→Support housing, 9→Engagement claw, 12→Rotary disk, 13→Rotary shaft, 14→Support plate, 18→Movement plate, 21→Motor, 22a-22
d → rotating grindstone, a → processed material, b → curved surface to be polished, b ₁
~b ₄ → partial surface.

Claims (1)

[Claims] 1. A rotary shaft 13 is provided on the curved surface polishing device so as to be freely movable toward or away from the material feeding path 2, and is fixed while rotating at a plurality of angles.
Polished surface b on the side of the workpiece sent to the material feed path 2
A rotary disk 12 is attached to the side of the rotary disk 12, and a plurality of support plates 1 are attached to the edges of the rotary disk 12.
4 are installed vertically at different angles, each support plate 14 is provided with a movable plate 18 that allows vertical movement adjustment, and the vertical axis of a motor attached to each movable plate 18 is
A plurality of rotary grindstones 22a to 22b for polishing curved surfaces corresponding to partial surfaces _b1 to _b4 , which are virtual vertically divided surfaces b of the workpiece to be polished, are attached, and the plurality of rotary grindstones for polishing A curved surface polishing machine characterized in that any one of 22a to 22d is selectively stopped at a position corresponding to any one of partial surfaces _b1 to _b4 of the surface to be polished b by rotating and stopping the rotary shaft 13. .