JPH0438534B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a swinging device for producing a figure-of-eight motion in a surface plate, a workpiece, etc. in a lapping machine.

[Prior Art] A conventionally known double-sided lapping machine has a carrier meshed between a sun gear and an internal gear, and the workpiece held by the carrier is driven by both gears in a planetary gear shape. It is constructed so that the upper and lower surfaces are wrapped around each other.

However, the conventional lapping machine described above is not suitable for lapping large workpieces because the size of the workpiece that can be held on it is limited by the carrier. Since they are rubbed together while being rotated in the circumferential direction, the influence of the speed difference between the inner and outer circumferential sides of the rotation is large, making it difficult to maintain lapping accuracy.

In general, it is said that the basic lapping motion when lapping a workpiece is a figure-eight motion, and in fact, in most cases when hand-wrapping, there is a method of lapping while drawing a figure-eight motion. It is taken. Therefore, if this figure-8-shaped lapping motion can be applied to the lapping machine described above, it will be possible to bring the surface plate and the work into even sliding contact over a wide area, and the Wrap accuracy can be improved by reducing the influence of speed differences.

[Problems to be Solved by the Invention] In view of the above-mentioned conventional problems, an object of the present invention is to develop a mechanical figure-eight movement in order to be able to apply the figure-eight lapping movement to a lapping board. The object of the present invention is to provide a rocking device for a lap board that can be used to create a lap board.

[Means for Solving the Problems] In order to solve the above problems, the swinging device of the present invention slides the base ends of a pair of swinging links in a lapping machine that relatively slides a workpiece and a surface plate. Each is rotatably supported by a pin perpendicular to the mating surface, and an intermediate link is rotatably connected between the tips of these swing links, and a surface plate or workpiece is connected to the center point of the intermediate link. and a swinging actuator is connected to each of the pair of swinging links, and these actuators are connected to a control device, and the control device causes the pair of swinging links to swing at a predetermined timing with the actuator. This feature is characterized in that it is configured to cause a figure-of-eight movement in the surface plate or workpiece connected to the intermediate link.

[Operation] When a pair of swinging links is swung at a predetermined timing by an actuator with its base end as a pivot point, the intermediate link connected between these swiveling links also swings, and the center of the intermediate link The points are displaced in a figure-eight trajectory.

Therefore, by attaching a surface plate or a workpiece to the center point of the intermediate link, it is possible to cause the surface plate or workpiece to make a figure-of-eight motion.

[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 shows an example in which the rocking device of the present invention is applied to a double-sided lapping machine, in which 1 indicates the body of the lapping machine, 2 indicates the base plate attached to the top surface of the machine 1, and the above-mentioned In the center of the upper surface of the aircraft 1, there is a
A lower surface plate 4 is provided inside and is driven and rotated in a fixed position by a drive source 3 (see FIG. 2), and an upper surface plate 5 is driven by a swing device 6 provided on the base plate 2. A workpiece 7 (see FIG. 2) is sandwiched between these surface plates 4 and 5, and both sides of the workpiece 7 are wrapped.

The swinging device 6 comprises a pair of swinging links of equal length whose base ends are rotatably supported at a fixed position on the base plate 2 by a pin 8 perpendicular to the sliding surface of the surface plate and the workpiece. 9a, 9b, an intermediate link 10 rotatably connected between the tips of these swing links 9a, 9b by pins 11, 11, and an intermediate link 10 connected to an intermediate position of the swing links 9a, 9a, respectively. Actuators 12a, 12 such as fluid pressure cylinders
b, and the intermediate link 10 has a mounting member 1 fixed at its center point by a mounting shaft 14.
The actuators 12a, 12b are connected to the control device 16 (see Fig. 2), and the actuators 12a, 12b control the swing links 9a, 9b at a predetermined timing. The structure is such that the upper surface plate 5 is caused to undergo a figure-of-eight motion via the intermediate link 10 by swinging at the intermediate link 10. In addition, numeral 17 in the figure indicates a control panel for operating the lap board.

When wrapping the workpiece 7 with the wrapping machine having the above configuration, the workpiece 7 is placed between the upper and lower surface plates 4 and 5, and the lower surface plate 4 is placed between the upper and lower surface plates 4 and 5, as shown in FIG. At the same time, the upper surface plate 5 is driven and rotated by the drive source 3 at the fixed position, and the upper surface plate 5 is driven in a figure-eight shape by the swinging device 6, and both surfaces of the workpiece 7, which is fixedly supported in the fixed position by appropriate means, are moved between the two surface plates 4. ,5
Wrap with.

The figure eight movement of the upper surface plate 5 at this time is performed as follows. That is, in FIG. 3, from the state where the two swing links 9a, 9b and the link 10 are in the solid line position, the swing links 9a, 9b rotate around the pins 8, 8 by shortening the actuators 12a, 12b. When the tip pins 11 and 11 move from a to b and reach the position c where the swing link 9b and the link 10 are in a straight line, one actuator 12b continues to shorten, so the swing link 9b moves counterclockwise. However, the other actuator 12a switches its operating direction and gradually begins to extend, and in response, the swing link 9a also reverses and gradually rotates counterclockwise in the figure. start.

When the tips of the swing links 9a and 9b reach the position d where the swing links 9a and 10 are aligned, the actuator 12a continues to extend, so the swing link 9a continues to rotate counterclockwise. However, since the direction of operation of the other actuator 12b is switched and it gradually starts to extend,
In response to this, the swing link 9b also reverses and begins to rotate gradually clockwise in the figure.

When the swing links 9a and 9b pass through e and f and reach the position g where the swing link 9b and link 10 are aligned, the actuator 12b continues to extend, so the swing link 9b moves clockwise. Although it continues to rotate, the other actuator 12
Since a changes direction of motion and begins to shorten,
The swing link 9a also reverses and gradually starts rotating clockwise in the figure.

When the tip of each swing link 9a, 9b reaches the position h where the swing link 9a and link 10 are aligned, the actuator 12b starts to shorten, so the swing link 9b is reversed and the Start rotating counterclockwise.

Thus, when the swing links 9a, 9b are swung at a predetermined timing by the actuators 12a, 12b, the intermediate link 10 is also swung, and the mounting shaft 14 at the center thereof is swung at 8 as shown by the chain line.
Draw a . Therefore, this intermediate link 10
The upper surface plate 5 attached to the center of the workpiece 7 via the attachment member 15 slides on the workpiece 7 while performing the above-mentioned figure-eight movement.

At this time, the upper surface plate 5 can be rotatably mounted to the intermediate link 10 by rotatably supporting the mounting shaft 14 without fixing it to the intermediate link 10, or, It is also possible to install a drive source such as a motor on the intermediate link 10 and forcibly drive the upper surface plate 5 with this drive source.

The shape and size of the figure 8 above corresponds to the swing link 9.
Various changes can be made by changing the ratio of the lengths of a, 9b and the intermediate link 10, and thereby an appropriate figure-8 shape can be selected and set according to the wrap conditions.

Further, in the above embodiment, the upper surface plate 5 is moved in a figure of eight, but the lower surface plate 4 or the workpiece 7 can also be swung, or a plurality of them can be swung simultaneously. . In this case, whether or not to rotate the rocking surface plate or the workpiece may be considered depending on the lap conditions, and the same applies to whether or not to rotate the surface plate or the workpiece that is not rocked.

It goes without saying that the swinging device 6 described above can be similarly applied to a single-sided lapping board. [Effects of the Invention] According to the present invention having the above configuration, an intermediate link is rotatably connected between the tip portions of a pair of swing links, and a surface plate or a workpiece is connected to the center point of the intermediate link. By swinging the pair of swinging links at a predetermined timing with an actuator, the swinging of the swinging links can cause the surface plate or the workpiece to undergo a desired figure-of-eight motion via the intermediate link. .

In addition, since it is constructed from a combination of three links: a pair of swinging links driven by an actuator and an intermediate link attached to a movable member, the construction is extremely simple and the price is low. There are advantages.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a lap board to which a swinging device according to the present invention is applied, FIG. 2 is a diagram showing the basic configuration of its main parts, and FIG. 3 is an explanatory diagram of the operation of the swinging device. 4...Lower surface plate, 5...Upper surface plate, 7...Workpiece,
8... Pin, 9a, 9b... Swing link, 10...
...Intermediate link, 12a, 12b...actuator, 16...control device.

Claims (1)

[Claims] 1. In a lapping machine in which a workpiece and a surface plate are relatively slid together, the base ends of a pair of swinging links are rotatably supported by pins perpendicular to the sliding surface, and the tips of these swinging links are An intermediate link is rotatably connected in between, a surface plate or a workpiece is connected to the center point of the intermediate link, and a swinging actuator is connected to each of the pair of swinging links to control these actuators. The control device is connected to the device, and the control device is configured to cause a figure-of-eight motion in the surface plate or workpiece connected to the intermediate link by causing the pair of swing links to swing at a predetermined timing using the actuator. A rocking device for a lap board characterized by: