US 9,868,164 B2Granted

Apparatus for machining, particularly for cutting a tubular or round section body

AssigneeExact Tools Oy

InventorsSeppo Makkonen, Mika Priha

Life of this patent

Estimating the term…

Loading patent…

Abstract

An apparatus (100) for machining a tubular or round-bar type piece, wherein the apparatus comprises a frame element (102), a machining unit (104), as well as a threaded shaft (110), which is fitted to the frame element in a rotatable and axially immobile fashion and has a first section 110a) provided with a right-handed thread and a second section (110b) with a left-handed thread. The first section is provided with at least one first support element (106a) and the second section is provided with at least one second support element (106b), the mutual distance between the support elements being adjustable in response to rotating the threaded shaft, such that the support elements, for example wheels, are adapted to touch a workpiece and to support and guide the apparatus (100) in the process of machining the piece. At least one of the support elements, such as wheels (106a, 106b), is adapted to be capable of rotating relative to its axis in response to moving the apparatus along the surface of a workpiece.

Claims16

Dependent claims

An apparatus for machining, comprising:

a frame element having a longitudinal axis and an outer perimeter;
a machining unit;
a device for attaching the machining unit to the frame element;
an adjustment element enabling movement of a tool member of the machining unit relative to the frame element towards and away from a workpiece;
wherein the frame element is provided with a threaded shaft having a longitudinal axis, the shaft being rotatable about its longitudinal axis and axially immobile relative to the frame element in a direction of the longitudinal axis of the threaded shaft, and wherein the threaded shaft has a first section with a right-handed thread and a second section having a left-handed thread;
and
wherein the first section carries a first support element connected with the threaded shaft through a first attachment element, and the second section carries a second support element connected with the threaded shaft through a second attachment element, wherein as the threaded shaft is rotated, the distance between the first and second support elements is adjustable only along the longitudinal axis of the frame element via simultaneous movement of the first and second support elements so that distance of the first and the second support element from the frame element remains constant,
wherein the first and second support elements are located within the perimeter of the frame element, and are adapted to touch the workpiece and support the machining apparatus on and above the workpiece and guide the apparatus as the workpiece is being machined;
wherein one of the first or second support elements is adapted to rotate relative to the workpiece so as to roll on the workpiece,
wherein a portion of the machining unit is located within the perimeter of the frame element, and
wherein the apparatus for machining does not include a clamping mechanism for clamping the apparatus to the workpiece.

8 more elements

A machining apparatus for cutting, scoring, or beveling tubular or round bar type workpieces with various diameters, comprising:

a frame element having a longitudinal axis and an outer perimeter;
a machining unit;
a device for attaching the machining unit to the frame element;
an adjustment element enabling movement of a tool member of the machining unit relative to the frame element towards and away from a workpiece;
wherein the frame element is provided with a threaded shaft having a longitudinal axis, and the shaft being rotatable about its longitudinal axis and axially immobile relative to the frame element in a direction of the longitudinal axis of the threaded shaft, and wherein the threaded shaft has a first section with a right-handed thread and a second section having a left-handed thread;
and
wherein the first section carries a first support element connected with the threaded shaft through a first attachment element, and the second section carries a second support element connected with the threaded shaft through a second attachment element, wherein as the threaded shaft is rotated, the distance between the first and second support elements is adjustable only along the longitudinal axis of the frame element via simultaneous movement of the first and second support elements, so that distance of the first support element and the second support element from the frame element remains constant, and
wherein the first and second support elements are located within the perimeter of the frame element, and are adapted to touch the workpiece and support the machining apparatus on and above the workpiece and guide the apparatus as the workpiece is being machined,
wherein one of the first or second support elements is adapted to rotate relative to the workpiece so as to roll on the workpiece,
wherein a portion of the machining unit is located within the perimeter of the frame element, and
wherein the machining apparatus for machining does not include a clamping mechanism for clamping the machining apparatus to the workpiece.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/877,879Filed 5 Oct 2011
Priority: FI 201060255 Oct 2010
Published: US 2013/0269500 A117 Oct 2013
Granted: 16 Jan 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification21 codes

B23D 21/04
Machines or devices for shearing or cutting tubes: tube-severing machines with rotating tool-carrier
B23C 1/20
Milling machines not designed for particular work or special operations: portable devices or machines ; Hand-driven devices or machines
B23C 3/34
Grooving workpieces: milling grooves of other forms, e.g. circumferential
B23D 45/126
With a circular saw blade for cutting tubes: with the tool turning around the workpieces