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Cutting method and cutting device

A technology of cutting device and supporting device, which is applied in shearing device, device for shearing and forming blank, accessory device of shearing machine, etc., can solve problems such as machine failure, short service life, dangerous accident, etc. Effect

Inactive Publication Date: 2007-06-20
MANYO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is not appropriate to use a fluid pressure cylinder originally to overcome the high-pressure, high-speed, and long-stroke load accompanying such an impact, and dangerous accidents may occur due to short service life of the device, machine failure of this part, etc.

Method used

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  • Cutting method and cutting device
  • Cutting method and cutting device
  • Cutting method and cutting device

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Experimental program
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Effect test

no. 1 approach

[0048] Hereinafter, a first embodiment of the cutting device 1A of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a cutaway lower portion of the cutting device, and FIG. 2 is a right side view of FIG. 1 . A ram 2 driven up and down is provided on a cutting machine body 1 of the cutting device 1A. Regarding the driving mechanism of the ram 2, there are crank mechanism, lever mechanism, toggle mechanism, hydraulic mechanism, etc., which are all well-known technologies and are not the gist of the present invention, so their description is omitted. A tool holder 3 is provided at the lower end of the ram 2 . The cutter holder 3 is mounted on the body 10 of the cutting machine body 1 .

[0049] The movable side cutter 4 is mounted in the cutter holder 3 so as to be slidable in the vertical direction. The upper part of the movable side cutter 4 is fixed on the lower end of the ram 2, and is driven up and down by the ram 2. T...

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PUM

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Abstract

To pivotally support a billet in an optimum state in cutting to provide the high quality billet with less deformation. [MEANS FOR SOLVING PROBLEMS] When a movable side cutting blade (4) is lowered, it starts biting a material while providing collapsing deformation thereto. A billet pivotally-supporting shoe (15) pivotally supports the billet from the underside. When a ram (2) is further lowered, a projected cam (26) is moved on the sloped surface (24) of a recessed cam (23) formed in a shoe support shaft (17) against the force of a coned disc spring (30). When the breakage of the billet is completed, the projected cam (26) slides on the sloped surface (24) of the recessed cam (23) and rides over the outer peripheral surface of the shoe support shaft (17), and the billet pivotally-supporting shoe (15) retreats so that the billet can be fallen.

Description

technical field [0001] The present invention relates to a cutting method and device for cutting raw materials such as bars. More specifically, it relates to a cutting method and apparatus for cutting a restrained long bar into a predetermined size by shearing force to obtain a raw material for forging. Background technique [0002] Forming the raw material for forging is performed by cutting a long bar into a predetermined size. Cutting for mass production of forging raw materials. A shearing machine is used to apply a shearing force to a long bar, and the bar is cut into a predetermined size or a short size by shearing. A 5-6m steel bar called a standard size material with a circular or square cross-section is cut by shearing with a cutting tool with two upper and lower blades matching the outer diameter of the steel bar. The cutter has the shape of a semi-circular arc. 6( a ), ( b ) and ( c ) are external views of billets (cut pieces of bar steel) showing defect shapes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23D33/08B23D23/00B23D15/00B23D33/02
CPCY10T83/06B23D15/00B23D33/02B23D15/04
Inventor 盐川博康
Owner MANYO