JPS60207757A - Spherical-body working apparatus - Google Patents

Abstract

PURPOSE:To work a plurality of spherical bodies with high accuracy and high efficiency by grinding an elementary spherical body in the direction crossing with the rolling direction, being rolled by the dropping action along a guide groove. CONSTITUTION:When a grindstone 7 is revolved in the direction of arrow 21 by a rotary driving mechanism, and an elementary spherical body 9 is input into a feeding pipe 11 and supplied into a guide groove 10 on a surface plate 4, and then the elementary spherical body 9 receives a gravity in the direction of arrow 22 along the guide groove 10, and is restrained by the guide groove 10, and a grinding force acts in the direction of arrow 23. Therefore, the elementary spherical body 9 can be ground uniformly free from unevenness on the whole surface, and the spherical body is worked into true spherical body 12 before it leaves a recovery pipe 13. Since the rolling direction of the elementary spherical body 9 due to the dropping action along the guide groove 10 and the grinding direction due to the grindstone 7 are set so as to cross each other, the elementary spherical body 9 can be worked into true sphere free from unevenness on the whole surface, with high accuracy and high efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a sphere processing device that simultaneously wraps a plurality of spheres, and is not particularly limited thereto.

The present invention relates to a sphere processing device suitable for processing spheres made of ceramics.

[Technical background of the invention and its problems 3 Spheres are widely applied in various technical fields as constituent elements of various devices, and in particular, spheres made of ceramics are used to take advantage of their corrosion resistance, heat resistance, abrasion resistance, etc. Application to special purposes is attracting attention. In general, regardless of whether the sphere is made of ceramic or not, it is required to have good sphericity and a predetermined diameter, so a processing device suitable for this is required. Thus, for a relatively large sphere, 1 in - times
In many cases, individual spheres are processed, but for relatively small spheres, it is desirable to process many spheres at the same time.

Figure 1 is an example of this, and shows a steel disc-shaped lap plate (1
)K, a steel disc-shaped push plate (2) is coaxially opposed to the guide plate (3) that supports the spherical workpiece (S) between the wrap plate (1) and the push plate (2). ) are arranged. A plurality of spherical workpieces (S) are supported by support portions formed on the same circumference of the guide plate (3), and the lamp plate (1)
It fits into the V-shaped annular groove (1a) of and rolls in the annular groove (la) due to the rotation of the push plate (2) and the pressing force applied via the push plate (2), and during this time Then, a lapping agent is supplied from the outside and processed.

However, with this processing device, the pressure applied via the press plate (2), the amount of lapping agent supplied, the interval between the lapping agents, etc. slightly affect the amount of lapping. )
Furthermore, the cross-sectional shape changes over time due to wear as shown in Figure 2.
1. It is extremely difficult to perform proper machining with high efficiency.

[Purpose of the invention]

The object of the present invention is to obtain a sphere processing device that can process a plurality of spheres with high efficiency.

[Summary of the invention]

A spherical body is inserted between a guide groove carved on the surface plate and a grinding wheel, and the spherical body is ground by its own weight along the guide groove in a direction that intersects with the transfer direction. It was designed to do so.

[Embodiments of the invention]

An embodiment of the present invention will be described below in detail with reference to the drawings.

FIGS. 3 and 4 show a sphere processing apparatus according to one embodiment. This sphere processing device includes a cylindrical surface plate (4) and a support that supports the surface plate (4) so that its main surface is perpendicular to the base (5) and its main surface is vertical. Stand (6)
, a cylindrical grinding wheel (made of force), a rotation drive mechanism (8) for rotationally driving this grinding wheel (7), and a ceramic material, which is installed to face the surface plate (4) so as to be almost coaxial with the surface plate (4). A supply pipe aη that supplies the coarse sphere (9) to the entrance side opening of the guide groove αO) (see Fig. 5) with a V-shaped cross section cut in the surface plate (4), and The main surface of the surface plate (4) facing the grinding wheel (7) is provided with a recovery pipe (131) for recovering the spherical α-shaped particles after processing from the side opening. A guide groove αQ is formed as shown in FIG. It detours around the center turn in (4) in an arc shape and changes direction, and is again inclined downward at an angle θ with respect to the horizontal plane.

The depth of the guide groove αQ is set such that a part of the elementary sphere (9) protrudes. Further, the surface of the grinding wheel (7) facing the surface plate (4) is a grinding surface (14), and this grinding surface (14) has diamond abrasive grains coated with resin, nickel, etc. It is widely supported. A constant gap is provided between the grinding surface α4 and the surface plate (4), which is approximately equal to the amount of protrusion of the elementary sphere (9) from the guide groove al. Then, the rough sphere (9) is rotated and dropped along the guide groove (11) due to its own weight while undergoing the grinding process by the grinding wheel (7). ) is a bearing stand α9 installed opposite to the support stand (6), and a rotating shaft α which is supported by this bearing stand α51 and has a grinding wheel (7) attached to one end.
0 and a pulley (1) attached to the other end of this rotating shaft αe.
7), the motor a~ installed apart from the bearing stand (151), and the pulley (1 (11), and the pulley (I7), (l1) attached to the rotating shaft (18a) of this Mome α barrel. A belt (consisting of 20) wrapped around it.
C1 This belt (201) transmits the rotational force of the motor (181) and rotates the grinding wheel (power).In addition, the rotation axis Oe is designed so that its axial position can be adjusted, and the The above-mentioned gap can be adjusted according to the size of the sphere (9).On the other hand, the supply pipe aυ and the collection pipe (13) are inclined so as to match the inclination angle of the guide groove (10). One end thereof is disposed close to the opening of the guide groove αQ.

In the sphere processing device having the above configuration, first, the grinding wheel (7) is rotated in the direction of the arrow Qυ force by the one-rotation drive mechanism (8), and then the elementary sphere (9) is put into the supply pipe Ql),
Supply the elementary sphere (9) to l. As a result, elementary sphere (9)
teeth.

Since gravity is applied in the direction of arrow (2) in Fig. 6 along the guide groove a, and the elementary sphere (9) is restrained by the guide groove OQ, a grinding force acts in the direction of arrow (c). . As a result, the elementary sphere (9) is ground uniformly over the entire surface, and the elementary sphere (9) is processed into a true sphere α2 by the time it leaves the first recovery tube.

In this way, the sphere processing device of this embodiment can process the elementary sphere (9).
Since the transfer direction due to the falling action along the guide groove a and the grinding direction by the grinding wheel (7) are set to intersect, the elementary sphere (9) can be made evenly over the entire surface.

Moreover, it can be processed into a perfect sphere with high precision and efficiency. In other words, it has an exceptional effect of improving machining efficiency by more than 1000 times compared to the lapping method.

In addition, as shown in Fig. 7, there are multiple guide grooves.

(C) and (E) may be provided and used in order.

By doing so, the grinding time is not long and it is possible to process the sphere with higher precision. In this case, it is better to make the curvature of the central bent part of the guide groove (24) that does not surround the center of the surface plate (4) smaller than that of the other guide grooves (c) and (a).

In addition, in this case, as shown in Fig. 8, the guide groove (24, @
.

Processing accuracy can be improved by gradually reducing the width of Qo to match the dimensions of the molded sphere. The optimum inclination angle of the guide grooves (24), (c), and (a) at this time is 45 degrees, and 35 to 60 degrees is appropriate. Furthermore, if the angle is in the range of 15 to 75 degrees, spherical processing is possible. Furthermore, as shown in FIG.

A similar effect can be obtained by making the linear guide grooves □□□... tilt downward on the surface plate (4). Yet again.

The cross-sectional shape of the guide groove is not limited to the figure 7 shape.

For example, it may be U-shaped. Further, the grinding direction is not limited to one circumferential direction, and the grinding wheel may be caused to reciprocate linearly in a direction that intersects with the rolling direction of the elementary sphere along the guide groove. Further, the main surface of the surface plate (4) on which the guide grooves are carved is not necessarily in the vertical direction, but as long as one sphere falls, the angle of inclination thereof may be set as appropriate.

〔Effect of the invention〕

The sphere machining device of the present invention transfers the elementary sphere by the falling action along the guide groove, and grinds the elementary sphere in a direction intersecting the transfer direction due to the falling, so that the elementary sphere can be processed evenly and machined. It can also be processed into true spheres with high precision and efficiency. In particular, compared to sphere machining using the lapping method, the machining efficiency is about 1000 times or more, which is an exceptional effect.

[Brief explanation of the drawing]

FIGS. 1 and 2 are explanatory diagrams of conventional spherical processing. Fig. 3 is a front view of a sphere machining device according to an embodiment of the present invention, Fig. 4 is a side view thereof, Fig. 5 is an A yellow sectional view of a guide groove, Fig. 6 is a front view of a surface plate, 9 through 9 are diagrams showing a sphere processing apparatus according to another embodiment of the present invention. (4): Surface plate, (crab grinding wheel. (8) Two-rotation drive mechanism, flQl: Guide groove. Agent: Patent attorney Kensuke Norichika (and one other person) Fig. 1 Fig. 2
Figure 3 Figure 4

Claims (1)

[Claims] A surface plate in which a guide groove into which a part of the sphere is immersed and the sphere rolls due to its own weight is provided, and a grinder that is provided opposite to the surface plate and comes into contact with the sphere in the guide groove. A sphere processing device featuring: