Sheet metal bending technology

A process and sheet metal technology, applied in the field of machining, can solve problems such as difficulty in ensuring product quality, irregular operation process, and chaotic operation steps

Inactive Publication Date: 2016-11-23
昆山市力勋达精密机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operation steps of the existing sheet metal bending process are chaotic, or the operation process is not standardized, and the sheet metal bending process is not well regulated, so it is difficult to ensure product quality, and further improvement is necessary

Method used

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Embodiment Construction

[0009] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0010] This specific embodiment adopts the following technical solutions: a sheet metal bending process, which includes the following steps: 1. Accurately calculate the unfolded size of the part and the position of each hole and gap before the bending process; The expanded size is calculated according to the principle that the length of the bending neutral layer is constant; the expanded length of the sheet is equal to the sum of the length of the straight line and the length of the neutral layer of the bent part; 2. Determine the bending time according to the size and material thickness on the drawing The key to the selection of the upper mold is to avoid the deformation caused by the collision between the product and the tool (in the same product...

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Abstract

The invention discloses a sheet metal bending technology which comprises the following steps: 1, before a bending production process, preparing to calculate the unfold size and positions of all hole sites and notches of a component; according to the principle that the length of a bent neutral layer is not changed, calculating the unfold size of a component sheet matal; the unfold length of the part sheet matal is sum of length of a straight part and length of the neutral layer of a bent part; 2, according to the size and material thickness on a drawing, determining a cutter and a cutter groove during bending, wherein avoidance of deformation caused by collision between a product and the cutter is key to selection of an upper die, and selection of a lower die is determined according to the thickness of a sheet material; and 3, determining the bending sequence, wherein the bending rule is as follows: internal first and external second, small first and big second, and special first and common second; for a workpiece to be tightly pressed, firstly, the workpiece is bended by 30-40 degrees, and then the workpiece is tightly pressed by a leveling die. The sheet metal bending technology ensures that all machined hole sites, notches and the boundary dimension of the bended component meet the expected requirements.

Description

technical field [0001] The invention relates to the field of machining, in particular to a sheet metal bending process. Background technique [0002] Sheet metal processing is an important part of mechanical production, especially in industries such as aviation, home appliances, electric power, fire protection, communications, instrumentation, and electronic measurement. Sheet metal parts are widely used. All kinds of instruments, power distribution cabinets, equipment chassis, panels and control cabinets are bent from sheet metal parts, with complex and diverse shapes, difficult processing, and high requirements for interchangeability between workpieces. The bending process is the last process of forming most parts (except the welding process), and it is also the most important process. The quality of the bending process directly affects the final forming size and appearance of the product. The operation steps of the existing sheet metal bending process are chaotic, or the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D5/00
CPCB21D5/00
Inventor 吴海东甘仕赣肖辉
Owner 昆山市力勋达精密机械有限公司
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