Method for machining middle die body of bending machine die for round workpieces

Abstract

The invention discloses a bending machine die used for a round workpiece and a machining method thereof, and belongs to the field of die designing. The bending machine die comprises an upper die body, a middle die body and a lower die body. The lower surface of the upper die body is arc, the middle die body is divided into a middle die upper part and a middle die lower part, a first arc groove which sinks downwards is formed in the upper portion of the middle die upper part, the first arc groove is semicircular, the middle die lower part is located on the left side below the middle die upper part, and a second arc groove which sinks upwards is formed in the right side below the middle die upper part. According to the bending machine die, through special shape design of the upper die body and the lower die body, and particularly arc-shaped protrusions arranged on the left side face of the middle die lower part, the working concept of an original bending machine die is changed thoroughly, the bending machine die moves leftwards and rightwards while moving upwards and downwards instead of simply moving upwards and downwards, and therefore the controlling precision is higher.

Description

[0001] The present invention is a divisional application of the patent application with the application date of April 8, 2014, the patent name: a bending machine mold for circular workpieces and the processing method of the mold, and the patent application number: 2014101384070. technical field [0002] The invention belongs to the field of molds and bending, in particular relates to a bending machine mold, and more specifically relates to a middle mold processing method of a bending machine mold for circular workpieces. Background technique [0003] The bending machine mold is a tool used by the bending machine to process and form the sheet. This tool is composed of various parts, and different molds have different parts. It mainly realizes the processing of the shape of the article through the change of the physical state of the formed material. Under the action of the pressure of the bending machine, the blank becomes a workpiece with a specific shape and size through the...

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Problems solved by technology

[0012] Aiming at the problem that the existing bending machine mold cannot process a complete circle and the error is large when bending the workpiece, the present invention designs a bending machine mold for a circular workpiece, but for this mold, the performance The requirements are particularly high, especially the arc-shaped protrusions of the middle mold, which require high hardness and wear resistance, so a new material and process need to be specially designed. The invention provides a bending bending machine for circular workpieces. The middle mold processing method of the machine mold can accurately process a standard circle, and the wear resistance of the mold processed by this processing method is greatly improved

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