JPS6171964A - Cylinder lapping device - Google Patents

Abstract

PURPOSE:To have processing with extra-high accuracy and efficiency as well as with good surface quality by using a combination of a hollow cylinder rotating at a comparatively low speed and a work cylinder which is located in the first named cylinder and makes rotary and reciprocative motion. CONSTITUTION:A pair of hollow cylinders 16 with large diameter are fixed to the ends of another hollow cylinder 15 with smaller diameter, which is rotated by a motor 19 through a belt 17 and a pulley 18. A pair of work cylinders 20, 20 having such an outside surface as serves for attachment of a plurality of short thin pieces 1 are arranged inside said pair of hollow cylinders 16, and these cylinders 20, 20 are set on a rotary shaft 21, and its rotation shall be transmitted thereto. This piece s1 as works to be processed are attached to the outside surface of each work cylinder 20, and a grinding liquid containing abrasive grains, anti-rust agent and water is poured in the large-dia. hollow cylinders 16. The work cylinders 20 and hollow cylinders 16 are rotated oppositely and the rotary shaft 21 is reciprocated in the direction of arrow C, and thus each thin piece 1 is provided with a cylindrical surface having a radius of curvature approx. same as the radius of work wheel 20 with extraordinary high efficiency.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cylindrical lamp device used for processing a predetermined curved surface on the surface of a rectangular thin plate wafer when manufacturing a crystal piece for a crystal resonator, etc. This is related to the improvement of.

[Conventional technology and problems]

The prior art will be explained with reference to the drawings.

FIG. 1 is a perspective view of a thin plate piece, FIG. 2 is a front view of a cylindrical grinder for explaining the cylindrical grinding method, and FIG. 3 is a schematic sectional view of a cylindrical lens grinder.

Conventionally, a thin plate piece 1 having a cylindrical surface 1a as shown in FIG.
To manufacture the drum, as shown in Fig. 2, a thin plate piece 1 with an initial uniform thickness is attached to the flat part 2a of the drum 2, which is formed into a regular polygon, using an adhesive such as wax. Thereafter, a cylindrical grinding method was adopted in which the shaft was attached to a rotating shaft that rotated at a relatively low speed and rotated, and a grinding wheel 6 that rotated at a high speed was brought into contact with the shaft for grinding. However, this method has the disadvantage that a crack layer or a strained layer due to grinding is deep in the machined surface, and the electrical characteristics, which determine the final quality, are significantly deteriorated. Further, a cylindrical lens polishing machine as shown in FIG. 3 has been devised and put into practical use, but it has the disadvantage of poor machining accuracy and low machining efficiency, making it difficult to mass-produce.

[Purpose of the invention]

In view of the above-mentioned drawbacks of the prior art, the present invention aims to provide a novel cylindrical lapping device that can perform highly accurate cylindrical surface machining with extremely high efficiency.

[Structure of the invention]

The device of the present invention is formed by forming a hollow cylinder so as to be rotatable at a predetermined speed, disposing a plurality of work cylinders or one work cylinder having a rotating shaft inside the hollow cylinder, and disposing a plurality of work cylinders on the outer peripheral surface of the work cylinder. A plate-shaped workpiece is attached, and the rotating shaft is positioned horizontally so as to be movable in the vertical direction via a pair of horizontal positioning means, and is connected to an axial reciprocating drive mechanism. It is characterized by:

[Embodiments of the invention]

Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.

FIGS. 4 and 5 show an embodiment of the present invention.
The figure is a cross-sectional front view of the cylindrical lapping plate, and FIG. 5 is a left side view of the cylindrical lamp plate. In the figure, a support unit 12.16 having a round hole 11 is fixedly installed on the base 10.
Two roller bearings 14 are fitted in each, and rotatably support a small-diameter hollow cylinder 15. Both ends of the hollow cylinder 15 are formed with slightly larger inner and outer diameters, and the outer end faces are erected.
A pair of large diameter hollow cylinders 16.16 having joints 16a are fixed. The small-diameter hollow cylinder 15 is configured to be rotatably driven at a predetermined speed by a motor 19 via a belt 17 and a pulley 18.

Inside the hollow cylinder 16.16, a pair of work cylinders 20, 20 each having an outer periphery 20a to which a plurality of rectangular thin plate pieces 1, which are workpieces, are attached are arranged. The workpiece cylinder 20 is provided with a center hole, and the rotating shaft 21 is inserted into this hole and connected by fixing means such as a set screw or key, so that rotational force can be transmitted. Rotating shaft 210
A pair of bifurcated support members 22, 22 are provided near both ends, and are formed to restrict the horizontal movement of the rotating shaft 21 and to horizontally position it, and to be freely movable in the vertical direction. One end of the rotating shaft 21 is connected to the motor 26 via a connecting fitting 26, a flexible wire 24, and a connecting fitting 25.
It is connected to the. Further, the motor 26 is placed and fixed on a one-way slide table 27, and is capable of reciprocating in the axial direction of the rotating shaft 21 by a drive means (not shown).

Further, the slide table 27 is fixed on the vertical fine movement table 28, so that the height of the motor 26 can be adjusted according to the dimensions of the workpiece cylinder 200, and can be aligned with the height of the rotating shaft 21.

In the apparatus of the above embodiment, the workpiece thin plate piece 1 is attached to the outer peripheral surface of the workpiece cylinder 20, and a polishing liquid containing a mixture of water containing a rust preventive agent and abrasive grains is injected into the large diameter hollow cylinder 16. By reciprocating the work cylinder 20 in the direction of the arrow shown in the figure, the hollow cylinder 16 in the direction of the arrow B, and the rotary shaft 21 in the direction of the arrow C, the radius of the work wheel 20 is formed on the surface of the thin plate piece 10 of the workpiece. A cylindrical surface having a radius of curvature approximately equal to can be formed with extremely high efficiency.

6 and 7 show other embodiments of the present invention,
FIG. 6 is a cross-sectional front view of the cylindrical lapping plate, and FIG. 7 is a side view of the cylindrical lamp plate. A pair of bearings 61 and 61 are fitted onto the outer periphery of a hollow cylinder 60 with uniform inner and outer diameters, and these are removably mounted and fixed on a pair of ■-shaped mounting members 62 and 62'. ing. In addition, ■-shaped mounting member 62.6
On the side of 2', there is a bifurcated support member filter 6 formed in an L-shape.
is fixed. A timing belt pulley 64 is fixed on the outer periphery of the hollow cylinder 60, and the timing belt 1
-35. The hollow cylinder 30 can be rotated by a motor 67 via a motor pulley 66 at a predetermined speed.

Rising portions 30a are provided at both ends of the hollow cylinder 600. Inside the hollow cylinder 60, a plurality of (eight in the figure) work cylinders 68 are fixed to a rotating shaft 69 and arranged. The inner diameter of the rising portion 30a of the hollow cylinder 60 is the same as that of the work cylinder 3.
The outer diameter of the work cylinder 68 is larger than that of the cylinder 8, so that the work cylinder 68 can be easily taken out. The rotary drive mechanism and axial reciprocating mechanism of the rotary shaft 69 are similar to those shown in FIG. 4, and are designed to rotate and slide in the arrow, E, and F directions.

According to the embodiment described above, it is possible to simultaneously process a large number of work cylinders, and the number of workpieces to be processed per batch can be greatly increased. Further, the hollow cylinder 30 can be easily attached and detached, and the hollow cylinder can be easily replaced and the inside of the cylinder can be cleaned, thereby greatly improving work efficiency.

8 and 9 show still another embodiment of the present invention, FIG. 8 being a schematic perspective view of a cylindrical lamp board, and FIG. 9 being a sectional front view. Inside the hollow cylinder 40 is a thin plate piece 1 for the workpiece.
A work cylinder 41 having a cylindrical material affixed to its outer circumferential surface is arranged.

As shown in FIG. 9, this work cylinder 41 has lids 42 and 42 fixed to both ends of an axially long hollow cylinder, and a shaft 46 is implanted in the center of this lid 42. is provided with a plurality of rolling bearings 44, which are fitted into the two prongs of the bifurcated support member 45, and are horizontally positioned so as to be movable in the vertical direction. The shaft 46 is connected to a motor 49 via a connecting fitting 46, a flexible wire 47, and a connecting fitting 48, and rotates the work wheel 41 in the direction of arrow G, simultaneously rotates the hollow cylinder 40 in the direction of arrow 40, and rotates the shaft 46 in the direction of arrow G. ■It is configured to slide in the direction.

According to this embodiment, the work cylinder 41 has an integral structure,
In addition, since the structure is firmly connected to the shaft 43, it is easier to make the work cylinder compared to a structure in which many thin work cylinders are stacked on the shaft in a skewer shape, and there is no clearance with the shaft. Effects such as improved processing accuracy can be obtained.

〔Effect of the invention〕

As described in detail below, the cylindrical wrapping device according to the present invention uses a combination of a hollow cylinder that rotates at a relatively low speed and a work cylinder that is arranged inside the hollow cylinder and rotates and reciprocates.
Cylindrical surface processing with extremely high precision, high efficiency, and high surface quality can be performed.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an example of a crystal thin plate piece to be processed by the present invention, Figs. 3 is a schematic sectional view of a cylindrical lens polishing machine, FIG. 4 is a partially sectional front view of an embodiment of the present invention, FIG. 5 is a left side view thereof, and FIG.
The figure is a partially sectional front view of another embodiment of the present invention, FIG. 7 is a side view thereof, FIG. 8 is a perspective view of a main part of still another embodiment of the present invention, and FIG. FIG. 16.30,40...Hollow cylinder, 20.68.4
1... Work cylinder, 21.69.46...
·Axis of rotation.

Claims (1)

[Claims] A plurality of work cylinders or one work cylinder having one rotating shaft are arranged inside a hollow cylinder formed to be rotatably driven at a predetermined speed, and a plurality of plate-shaped workpieces are pasted on the outer peripheral surface of this work cylinder. cylindrical wrap, wherein the rotating shaft is horizontally positioned so as to be vertically movable via a pair of horizontal positioning means, and is connected to an axial reciprocating drive mechanism. Device.