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Bending die for safe case door frame plate and using and machining method thereof

A technology of bending molds and processing methods, applied in metal processing equipment, forming tools, manufacturing tools, etc., can solve the problems of difficult processing, low processing precision, poor efficiency, etc., and achieve convenient operation, good quality of finished products, and no cumulative error Effect

Active Publication Date: 2017-02-22
ANHUI LIYUAN NUMERICAL CONTROL CUTTING TOOL & PATTERNS MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there are problems of difficult processing, poor efficiency, and low processing precision in processing the workpiece. The present invention provides a special bending mold for the door frame of a safe, which can complete the processing of the above workpiece in one bending, with high efficiency and high processing accuracy. High, no damage to the workpiece

Method used

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  • Bending die for safe case door frame plate and using and machining method thereof
  • Bending die for safe case door frame plate and using and machining method thereof
  • Bending die for safe case door frame plate and using and machining method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Such as figure 2 , image 3 As shown, a special bending mold for a safe door frame plate in this embodiment includes an upper mold assembly 1 and a lower mold assembly 2;

[0059] Wherein, the upper mold assembly 1 includes an upper mold 130, the lower end surface of the upper mold 130 is a stamping surface, and the first slope 131, the second slope 132, and the third slope 133 are formed from one side to the other. and the fourth bevel 134 are sequentially connected, the angle between the first bevel 131 and the side of the upper mold 130 is 240°, the angle between the first bevel 131 and the second bevel 132 is 266°, the second bevel 132 and the The included angle between the third slope 133 is 91°, the fourth slope 134 is parallel to the second slope 132, and the intersection position between the first slope 131 and the second slope 132 is higher than the intersection position between the third slope 133 and the fourth slope 134 .

[0060] The lower mold assembly...

Embodiment 2

[0079] Although adopting the special mold and method in embodiment 1 can well complete the bending process of the safe door frame plate, there is a problem, that is, the number of times of use is too many, and the working parts of the upper mold 130 and the lower mold 230 are more stressed due to It is large and easy to damage, which leads to the need to replace the mold after a period of use. It has been proved by practice that the upper mold made of ordinary materials and heat treatment process will easily appear the first slope 131 and the second slope of the upper mold 130 when it is used for about 1600 times. The edges and corners at the junction of the inclined plane 132 and the corners at the junction of the third inclined plane 133 and the fourth inclined plane 134 appear cracking and wear. Similarly, the corners at the junction of the second groove surface 232 and the third groove surface 233 of the lower mold 230 also appear cracking abrasion etc. Although the above ...

Embodiment 3

[0096] A kind of processing method of special bending mold for safe door frame plate of the present embodiment, lower mold 230 is processed, and its steps are:

[0097] (1) Raw material preparation for rough

[0098] It is made by forging blank. The composition and mass percentage of the forging blank are: C 0.4%, Si 0.3%, Mn0.65%, S≤0.023%, P≤0.021%, Cr 1.4%, Mo 0.42%, ZrO 2 0.1%, the balance is Fe;

[0099] (2) Annealing treatment of forging blank

[0100] Annealing the forged blank obtained in step (1) through an annealing furnace, the annealing temperature is 830°C, the annealing time is 4.2h, cooled to 250°C in the annealing furnace, held for 0.8h, and then air-cooled to normal temperature;

[0101] (3) Initial processing of forging blanks

[0102] The forging blank in step (2) is processed into the primary shape of the mold on the lathe, and each side retains a margin of 1.5mm;

[0103] (4) Heat treatment of the mold

[0104]The mold obtained by machining in step (...

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Abstract

The invention discloses a bending die for a safe case door frame plate and a using and machining method thereof and belongs to the field of die design. The die comprises an upper die assembly provided with an upper die body, and a lower die assembly provided with a lower die body. The stamping face of the upper die body is matched with the stamping groove face of the lower die body. The die can machine a safe case door frame plate workpiece required to be machined at a time, precision is high, secondary manual treatment is not needed, damage to the surface of the workpiece is avoided, operation is convenient, and cost is low. The using method of the die can machine the safe case door frame plate fast and efficiently and is high in bending efficiency and good in finished product quality. The machining method of the die is used in the upper die body or the lower die body, firstly, forging is carried out, then the shape of various parts is machined, then accurate grinding is carried out, finally, assembling is carried out, the special heat treatment technology is adopted, the hardness, the tenacity and the abrasion resistance of the die meet the technological requirement, and the die is still normal after being used for over ten thousand times and long in life.

Description

technical field [0001] The invention belongs to the field of mold design, in particular relates to a bending mold for a safe door frame plate, more specifically relates to a special bending mold for a safe door frame plate and its use and processing method. Background technique [0002] 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 mutual guidance of the upper mold and the lower mold of the bending machine. In the actual production process, the enterprise will configure the lower mold with different groove angles according to the shape or size of the formed workpiece. However, with the develop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/10B21D37/20B21D5/02B21D53/00
CPCB21D5/02B21D5/0209B21D37/10B21D37/20B21D53/00C21D1/18C21D1/26C21D6/04C22C38/02C22C38/04C22C38/22C22C38/28
Inventor 张迎年王克文张一帆张先进
Owner ANHUI LIYUAN NUMERICAL CONTROL CUTTING TOOL & PATTERNS MFG
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