ORBITAL CUTTING APPARATUS CAPABLE OF FREELY AND SELECTIVELY CONTROLLING PLURALITY OF CUTTING TOOLS WITHIN ROTATING BODY BY USING ROTATIONAL SPEED RATIO

• US 20170259357A1
• Filed: 10/12/2015
• Published: 09/14/2017
• Est. Priority Date: 10/13/2014
• Status: Active Grant

• Current Assignee: Dcseng co., ltd.
• Original Assignee: Dcseng co., ltd.
• Inventors: Choi, Insung
• Granted Patent: US 10,166,614 B2
• Time in Patent Office: Days
• CPC Class Codes: B23B 2220/04 Chamferring B23B2220/28 takes precedence
• CPC Class Codes: B23B 2220/28 Parting off and chamferring simultaneously
• CPC Class Codes: B23B 3/26 the tools of which perform a radial movement; Rotary tool heads thereof
• CPC Class Codes: B23B 3/265 Surfacing or grooving flanges
• CPC Class Codes: B23B 5/08 for turning axles, bars, rods, tubes, rolls, i.e. shaft-turning lathes, roll lathes; Centreless turning
• CPC Class Codes: B23B 5/14 Cutting-off lathes B23D21/00 takes precedence shearing B23D
• CPC Class Codes: B23D 21/00 Machines or devices for shearing or cutting tubes as additional equipment for deep-drawing presses B21D24/16
• CPC Class Codes: B23D 21/04 Tube-severing machines with rotating tool-carrier
• CPC Class Codes: B26D 3/16 Cutting rods or tubes transversely cutting tubes longitudinally B26D3/001

Abstract

Disclosed is an orbital cutting apparatus that is capable of freely and selectively controlling forward and backward movement of a plurality of cutting tools, allowing the cutting tools to move forward and backward and to move in an axial direction of a material to be cut so as to enable processing of various shapes as well as cutting and chamfering, and is capable of simultaneously carrying out cutting and chamfering operations for a pipe material or a heavy pipe having a thickness of dozens of mm or more.

Claims

1. An orbital cutting apparatus that is capable of freely and selectively controlling a plurality of cutting tools within a rotary body using a rotational speed ratio, the orbital cutting apparatus comprising:

a spindle rotating unit coupled to any one surface of a main body so as to rotate (C axis);

a plurality of tool units coupled to reciprocate (X axis) toward a center of the spindle rotating unit on a front surface of the spindle rotating unit so as to cut a clamped material in an orbital manner;

a relative movement unit coupled to the main body on an opposite side to the spindle rotating unit to he rotatable in synchronization with the spindle rotating unit, and configured to transmit a power to the plurality of tool units so as to cause the tool units to reciprocate;

connection gears respectively formed at ends of driving shafts of the tool units so as to be selectively engaged with the relative movement unit so as to receive a power of the relative movement unit;

an operation unit configured to cause a connection gear selected among the connection gears to be engaged with or be disengaged from the relative movement unit; and

a control unit configured to control movements of the spindle rotating unit and the relative movement unit.

2. The orbital cutting apparatus of claim 1, wherein the connection gear is engaged with or disengaged from the relative movement unit while reciprocating on the end of the driving shaft by the operation unit so as to activate or deactivate a tool.

3. The orbital cutting apparatus of claim 2, wherein the connection gear is configured to repeatedly go in and out by a pusher of the operation unit in a one-touch manner.

10. The orbital cutting apparatus of claim 1, wherein the tool units receive a power of the relative movement unit through the driving shafts so as to convert a rotational movement into a vertical reciprocating movement.

11. The orbital cutting apparatus of claim 1, wherein the main body is configured to reciprocate in the longitudinal direction (Z axis) of the material by the control unit.

12. The orbital cutting apparatus of claim 1, wherein the main body is configured to move up or down depending on a caliber of the material.

13. The orbital cutting apparatus of claim 1, wherein the control unit includes a Human Machine Interface (HMI) touch screen configured to input or output of movement and processing conditions of components.

16. The orbital cutting apparatus of claim 1, further comprising:

a tool sensor configured to detect the positions of the cutting tools so as to present a reference point of a movement in an X-axis direction.

18. The orbital cutting apparatus of claim 1, further comprising:

a clamping unit installed on each side or any one side of the main body so as to fix the material,

wherein the clamping unit rotates a clamping wheel using at least one driver, and moves to be retracted or expanded such that a plurality of jaws tighten the material by a rotation of the clamping wheel, and the clamping wheel or the driver is provided with a scale configured to feedback a movement to the control unit so as to precisely control the movement of the clamping unit.

19. The orbital cutting apparatus of claim 18, wherein the jaws are configured to tighten the material by being retracted outside the material or to tighten the material by being expanded inside the material.

20. The orbital cutting apparatus of claim 1, wherein driving units of the spindle rotating unit and the relative movement unit mutually monitor respective loads of counterparts so as to enhance precision in synchronization.

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