JPH04128101U - cutting equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a cutting device that does not cause uneven wear on rotating blades. [Configuration] The disc-shaped rotary cutter 2 is connected to the output shaft 4a of the motor 4.
Attach to. Axial center 5 parallel to a straight line orthogonal to the output shaft 4a
The motor 4 is rotatably supported around the . [Effect] Since cutting is performed at the peripheral edge of the rotary blade 2, wear gradually occurs from the peripheral edge of the rotary blade 2. Therefore, uniform cutting can be maintained, and the rotary blade 2
Productivity can be improved by reducing the frequency of replacement.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is a cutting device that cuts the convex part created by arc welding into a concave spherical surface. It is related to.

0002

[Conventional technology]

As shown in FIG. 3, the conventional cutting device 101 has a spherical tip 102a. A rotary blade 102 is attached to an output shaft 104a of a motor, and is moved up and down. Ru. On the other hand, work 3 is a panel frame material assembled by welding, and arc welding is used. Since there is a convex arc spot portion 3a at the location where the arc is applied, this may become a hindrance. It is difficult to attach face materials, etc. Therefore, when pasting the face material etc., the cutting device 101 It is necessary to cut the arc spot portion 3a more. In this case, the motor (not shown) ) to rotate and lower the rotary cutter 102 along with the output shaft 104a, Cutting is performed by pressing the tip 102a against the arc spot portion 3a. As a result, the imaginary line As shown, a recess 3b is formed by transferring the spherical shape of the tip 102a.

0003

[Problem that the idea aims to solve]

In the conventional cutting device 101, the cutting angle in the radial direction of the rotary blade 102 is Due to the difference in speed, uneven wear occurs on the rotary cutter 102. This ensures uniform cutting. It is not possible to do this and the rotary cutter must be replaced frequently. The purpose of this invention is to provide a cutting device that does not cause uneven wear on rotating blades. be.

0004

[Means to solve the problem]

In the cutting device of this invention, a disc-shaped rotating blade is attached to the output shaft of a motor. output This motor is rotatably supported around an axis parallel to a straight line perpendicular to the axis. be.

[0005]

[Effect]

The cutting device of this invention rotates the motor around an axis parallel to a straight line orthogonal to the output shaft. By movably supporting the blade, cutting can be performed at the peripheral edge of the rotary blade.

[0006]

【Example】

An embodiment of this invention will be described based on FIGS. 1 and 2. The cutting device 1 is The rotary blade 2 is attached to the tip of the output shaft 4a of the motor 4, and the motor 4 is rotated around the shaft center 5. It was supported so that it could move freely. The shaft center 5 is a straight line perpendicular to the output shaft 4a (perpendicular to the plane of the paper). straight line).

[0007] The rotary cutter 2 is a disc-shaped member with a substantially rectangular cross-section and an appropriate thickness. . The motor 4 has a rotating blade 2 attached to the tip of an output shaft 4a, and a hinge part 4b on the side thereof. is installed protrudingly. The corner P of the rotary cutter 2 that comes into contact with the workpiece 3 is located at a distance R from the axis 5. To position. In other words, the virtual arc L is when the motor 4 is rotated around the axis 5. represents the locus of the corner P of . Therefore, when cutting the arc spot portion 3a, The arc L passes through the center of the arc spot portion 3a, and the arc L passes through the center of the arc spot portion 3a. Set the axis 5 above the center at an arbitrary height H from the top surface of the flat part of the workpiece 3. . In this state, start the motor 4 and rotate the rotary cutter 2 together with the output shaft 4a. Rotate the cutting device 1 in the direction of the arrow A from the corner P to the arc spot portion 3a. to press against. As a result, a recess 3c is formed.

[0008] R, H and the radius of the rotary cutter 2 are arbitrary and can be set freely. By changing these, the planar shape of the portion removed by cutting, that is, the recess 3c. The ellipticity, area, etc. of the shape can be changed.

[0009]

[Effect of the idea]

The cutting device of this invention rotates the motor around an axis parallel to a straight line orthogonal to the output shaft. By supporting it so that it can move freely, it can be held at the periphery of the rotary blade during cutting. As a result, wear gradually occurs from the periphery of the rotary cutter. Therefore, uniform cutting Not only can machining be continued, but the frequency of replacing rotary cutters can be reduced and productivity can be improved.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the operation of a cutting device according to an embodiment of the invention.

FIG. 2 is a sectional view of a workpiece that has been cut using a cutting device according to an embodiment of the invention.

FIG. 3 is an explanatory diagram of the operation of a conventional cutting device.

[Explanation of symbols]

1 Cutting device 2 Rotating knife 4 motor 4a Output shaft 5 Axis center

Claims (1)

[Scope of utility model registration request] 1. A cutting device in which a motor having a disc-shaped rotary cutter attached to the output shaft is rotatably supported around an axis parallel to a straight line perpendicular to the output shaft of the motor.