Cutter for cutting tubular parts

Patent metadata

Field	Value
Publication number	US-12017287-B2
Application number	US-201917420414-A
Country	US
Kind code	B2
Filing date	Dec 18, 2019
Priority date	Jan 14, 2019
Publication date	Jun 25, 2024
Grant date	Jun 25, 2024

Abstract

A powered cutting tool for cutting tubular or cylindrical workpieces such as pipe is described. The cutting tool includes a base, an electric motor, a collection of rollers, a frame, a feedscrew, an auto cut wheel system, and a handle for rotating the feedscrew and adjusting the position of the auto cut wheel system relative to the rollers. In certain versions, the cutting tool includes torque-limiting provisions, to limit the amount of torque applied to the feedscrew. In certain versions, the cutting tool includes rollers and press wheels featuring non-metal outer surfaces.

First claim

What is claimed is:

1. A powered cutting tool comprising:
a base;
an electric motor;
a plurality of rollers rotatably supported on the base, at least one of which is rotatably powered by the motor;
a frame extending from the base, the frame defining a threaded receiving region;
height adjustment provisions enabling the height of the frame relative to the base, to be selectively adjusted;
a feedscrew defining a first end and a second end, the feedscrew including a threaded region extending at least partially between the first end and the second end, the threaded region of the feedscrew threadedly engaged with the threaded receiving region of the frame;
a handle engaged at the first end of the feedscrew;
a cutting wheel engaged at the second end of the feedscrew;
at least one press wheel attached to the second end of the feedscrew;
a latch assembly, the latch assembly including a latch base secured to the frame, and a selectively positionable member movably mounted with the latch base, the member defining an engagement end;
wherein the member is positionable between an engaged position in which the engagement end of the member is in contact with and engaged with the feedscrew, and a disengaged position in which the engagement end of the member is free from contact with the feedscrew;
wherein upon rotation of the handle and the feedscrew, the distance between the cutting wheel and the plurality of rollers is selectively adjusted.

2. The powered cutting tool of claim 1 wherein the cutting wheel is a part of an auto cut wheel system which includes:
an axle assembly;
a feed spring defining a first end and a second end;
a carriage disposed between the axle assembly and the first end of the feed spring;

wherein the second end of the feed spring is engaged with the second end of the feedscrew.

3. The powered cutting tool of claim 1 wherein the feedscrew further defining a notch proximate the first end of the feedscrew and the handle includes:
a cone pin sized and shaped to releasably engage the notch defined in the feedscrew;
an adjusting screw;
an adjusting spring disposed between the cone pin and the adjusting screw;
wherein upon rotating the adjusting screw, the adjusting spring applies a variable force on the cone pin.

4. The powered cutting tool of claim 2 wherein the auto cut wheel system includes a plurality of cutting wheels.

5. The powered cutting tool of claim 1 further comprising:
an adjustable speed switch for selecting different motor speeds.

6. The powered cutting tool of claim 1 wherein the plurality of rollers include at least one roller having a non-metal outer surface.

7. The powered cutting tool of claim 1 wherein the at least one press wheel has a non-metal outer surface.

8. A powered cutting tool comprising:
a base;
an electric motor operable at different motor speeds;
an adjustable speed switch for selecting different motor speeds;
a plurality of rollers including a support roller, the plurality of rollers rotatably supported on the base, at least one of which is rotatably powered by the motor;
a frame extending from the base, the frame defining a threaded receiving region;
a feedscrew defining a first end and a second end, the feedscrew including a threaded region extending at least partially between the first end and the second end, the threaded region of the feedscrew threadedly engaged with the threaded receiving region of the frame;
a handle engaged at the first end of the feedscrew;
a cutting wheel system engaged at the second end of the feedscrew, the cutting wheel system including a cutting wheel and a press wheel, the press wheel attached to the second end of the feedscrew;
wherein upon rotation of the handle and the feedscrew, the distance between the cutting wheel system and the plurality of rollers is selectively adjusted;
height adjustment provisions enabling the height of the frame relative to the base, to be selectively adjusted.

9. The powered cutting tool of claim 8 wherein the cutting wheel system further includes:
an axle assembly;
a feed spring defining a first end and a second end;
a carriage disposed between the axle assembly and the first end of the feed spring;
wherein the second end of the feed spring is engaged with the second end of the feedscrew.

10. The powered cutting tool of claim 8 further comprising:
a latch assembly, the latch assembly including a latch base secured to the frame, and a selectively positionable member movably mounted with the latch base, the member defining an engagement end;
wherein the member is positionable between an engaged position in which the engagement end of the member is in contact with and engaged with the feedscrew, and a disengaged position in which the engagement end of the member is free from contact with the feedscrew.

11. The powered cutting tool of claim 8 wherein height adjustment provisions include a removable member insertable into receiving apertures in the frame and the base.

12. The powered cutting tool of claim 11 , wherein the frame is movable between a lowered position proximate the plurality of rollers and a raised position distal the plurality of rollers.

13. The powered cutting tool of claim 11 wherein the removable member is a double pin.

Assignees

• Ridge Tool Co

Inventors

• Zhou Qi
• Wu Duan
• Yang Xinwen
• Wu Kuo
• Fang Zhiping

Classifications

• B23D21/00

  Machines or devices for shearing or cutting tubes (as additional equipment for deep-drawing presses B21D24/16) · CPC title

• B23D45/124

  the workpieces turning about their longitudinal axis during the cutting operations · CPC title

• B23D45/10

  with a plurality of circular saw blades {(B23D45/143, B23D45/165 take precedence)} · CPC title

• B23D47/04

  of devices for feeding, positioning, clamping, or rotating work · CPC title

• B23D21/08 Primary

  with cutting wheels · CPC title