JPH0572304U - Spherical body processing equipment - Google Patents

Abstract

(57) [Summary] [Objective] To provide a device for processing a spherical body at low cost. A guide frame having an arcuate arm portion 2 having a constant curvature is provided, and a pair of clamping members 3 and 4 for rotatably clamping a workpiece W from both sides are provided at the center of curvature of the arcuate arm portion 2. It is arranged on a straight line L passing through and attached to the guide frame, and the work material W is rotationally driven around an axis corresponding to the straight line L via at least one of the pair of holding members 3 and 4. A holding member 7 for holding the cutting tool 6 for the material to be processed in a state in which the driving device 5 is provided and the cutting edge 6a is positioned inside the arcuate arm portion 2.
Is attached to the guide frame so as to be movable along the arcuate arm portion 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an apparatus for processing a spherical body, and more particularly, to an apparatus for processing a spherical body such as a spherical pig used when resin lining the inner peripheral surface of an existing pipe.

[0002]

[Prior Art]

 The spherical pig or the like is composed of a spherical elastic body made of sponge, rubber or the like. Conventionally, such a spherical body is molded by using a mold having a space corresponding to it ( Hereinafter, referred to as die molding).

[0003]

[Problems to be solved by the device]

 However, when the spherical body is manufactured by die molding, a high level of technology is required to manufacture the die itself, and the manufacturing cost increases, and when various spherical bodies of different sizes are required, various spherical bodies are required. There is a problem in that a die for each size is required, and the manufacturing cost of the spherical body increases. In particular, when spherical bodies having different sizes are required and the required number of each spherical body is small, there is a problem that the manufacturing cost becomes extremely high. The present invention has been made in view of such circumstances, and an object thereof is to provide a means for manufacturing the spherical body at low cost.

[0004]

[Means for Solving the Problems]

 A spherical body machining apparatus according to the present invention is provided with a guide frame having an arcuate arm portion having a constant curvature, and a pair of clamping members for rotatably clamping a material to be machined from both sides are provided on the arcuate arm portion. A driving device that is arranged on a straight line passing through the center of curvature and attached to the guide frame, and rotationally drives the workpiece material around an axis corresponding to the straight line via at least one of the pair of holding members. A holding member for holding a cutting tool for a workpiece with a cutting edge located inside the arcuate arm is attached to the guide frame so as to be movable along the arcuate arm. It has features.

It is preferable that the holding member is supported at three points, one inside and two outside of the arcuate arm.

[0006]

[Action]

 In the spherical body processing apparatus according to the present invention, while holding the material to be processed by the pair of holding members, the material to be processed is rotationally driven by the driving force of the driving device, and the holding member is formed into the arc shape. When it is moved along the arm along a circular arc, the spherical surface machining of the workpiece will be performed by the cutting edge of the cutter for the workpiece held by the holding member.

[0007]

[Effect of the device]

 Therefore, according to the present invention, it becomes possible to manufacture a spherical body without using a mold, which is a conventional problem in manufacturing a spherical body by a mold, that is, a spherical body. The problem of increased costs will be solved.

When the holding member is supported at three points as described above, the holding member is smoothly supported by the arcuate arm so that it can smoothly move in an arc. Become. Therefore, the cutting tool for the material to be processed held by the holding member can also be smoothly moved in an arc by following the holding member, and the spherical machining of the material to be processed by the cutting edge of the cutting tool can be performed. You can do it smoothly.

[0009]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of the spherical body processing apparatus according to the present invention. Reference numeral 1 in the drawing is a base, and the base 1 is provided with a guide frame having an arcuate arm portion 2 having a constant curvature. The arcuate arm portion 2 is formed of an arcuate body slightly larger than a semicircle. The guide frame arranges the arcuate arm portion 2 in a vertical posture in which one end portion 2a is located below and the other end portion 2b is located above, while the one end portion 2a is located above the base 1. It is provided on the base 1 by being attached to.

In the arcuate arm portion 2 of the guide frame, a pair of nipping members 3 and 4 for nipping the workpiece W from both sides in a rotating manner are provided along a straight line L passing through the center of curvature of the arcuate arm portion 2. It is installed in the state that it is placed on top. That is, one end 2a of the arcuate arm portion 2 is attached with one of the pair of nipping members 3 and 4 and the other end 2b of the arcuate arm portion 2 is attached. The other holding member 4 of the pair of holding members 3 and 4 is attached. One of the pair of holding members 3 and 4 is rotatably pivoted by a pivoting member 3a which is attached to the arcuate arm portion 2 so as to be movable in the radial direction and positionally. It is supported. The other holding member 4 is rotatably attached to the tip of a support member 4a which is attached to the arcuate arm portion 2 so as to be movable in the radial direction and positionally.

In the base 1, the work material W is straightened through at least one of the pair of holding members 3 and 4 (in the present embodiment, the one holding member 3). A drive device 5 that rotates around an axis corresponding to L is provided. The drive device 5 is specifically a motor arranged in the base 1, and the one holding member 3 to which the output shaft of the drive device 5 is connected transmits the rotational driving force of the motor. When the holding member 3 rotates following the rotation of the holding member 3, the workpiece W held between the holding member 3 and the other holding member 4 rotates.

The guide frame provided with the arcuate arm portion 2 is provided with a holding member 7 for holding the cutting tool 6 for material to be processed with the cutting edge 6 a located inside the arcuate arm portion 2. , Is attached movably along the arcuate arm portion 2. More specifically, the holding member 7 holds the cutting tool 6 for a workpiece so as to be movable in the radial direction of the arcuate arm portion 2 and to be positionally determined, and the inside of the arcuate arm portion 2 can be held. A rotating body 8 (for example, a commercially available ball bearing) is rotatably supported so as to be located at one location, and rotating bodies 9 and 10 are located at two locations outside the arcuate arm portion 2. (For example, a commercially available ball bearing) is rotatably supported. Further, the mutual spacing between the one inner rotating body 8 and the two outer rotating bodies 9 and 10 is such that the three arc-shaped arm portions 2 cause the arcuate arm portion 2 to move inward and outward. It is set to the distance that can be pinched from just. Therefore, the holding member 7 can be smoothly moved along the arcuate arm 2 while being guided by the three rotating bodies 8, 9, 10 from both inside and outside of the arcuate arm 2. ing.

When processing the workpiece W into a spherical body using the apparatus of the present invention, first, the workpiece W is rotatably clamped by the pair of clamping members 3 and 4, and then the workpiece W is rotatably clamped. The position of the cutting tool 6 for the working material is set to a position where the cutting edge 6a thereof appropriately hits the material W to be processed during the arc movement of the holding member 7, and while maintaining this state, the driving device 5 By rotating the holding member 7 in an arc while rotating the work material W by the driving force, the peripheral portion of the work material W is cut. Since it is usually necessary to cut the workpiece W in multiple stages, the position of the cutting tool 6 for the workpiece is set a plurality of times so that the cutting edge 6a is inward in multiple stages. I do. Further, as the material W to be processed, various materials such as sponge and rubber may be used, or materials having a free shape such as a substantially spherical body, a prismatic body, and a cylindrical body may be used. The material can be processed.

As the holding member 7 moving along the arcuate arm portion 2 gets closer to the rotation axis of the workpiece W, the workpiece W of the workpiece W driven by the driving device 5 is moved. It is preferable to control the drive device 5 so that the rotation speed is relatively high. This is because the peripheral speed of the cut portion of the workpiece W becomes relatively slower in the state closer to the rotation axis than in the state far from the rotation axis, but when the rotation speed is increased, the peripheral speed becomes higher. This is because the slower cutting speed is offset and the proper cutting conditions can be maintained.

It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a front view showing a spherical body processing apparatus according to the present invention.

[Figure 2] Side view

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2 Arc-shaped arm part 3,4 Clamping member 5 Drive device 6 Cutting tool for material 6 7 Holding member L Straight line W Work material

Claims (2)

[Scope of utility model registration request] 1. An arcuate arm portion (2) having a constant curvature.
And a pair of clamping members (3) for rotatably clamping the workpiece (W) from both sides.
(4) is arranged on the straight line (L) passing through the center of curvature of the arcuate arm part (2) and attached to the guide frame, and at least one of the pair of clamping members (3), (4) Through the work material (W) through the straight line (L)
A driving device (5) for rotating around an axis corresponding to the above is provided, and a cutting tool (6) for a workpiece is held with a cutting edge (6a) positioned inside the arcuate arm portion (2). A spherical body processing apparatus in which a holding member (7) is attached to the guide frame so as to be movable along the arcuate arm portion (2). 2. The spherical body machining apparatus according to claim 1, wherein the holding member (7) is supported at three points, one inside and two outside of the arcuate arm (2).