Dressing is the main product of our company - series of stripping machine key parts, the demand is large (each stripping machine needs 140~200 parts), the pressing assembly of the discharging into the discharging, casting company has become the core components of stripping machine work box discharging. The product has higher requirements for the shape of the row. Arrow method is made of 45 cold-drawn square steel 8mm×8mm×400mm series of mechanical processing, forming, heat treatment process, shape similar to S type. In the process of bending forming, it is mainly easy to appear unqualified products. Forming process has been completed on 40T hydraulic press, and it has passed the camber sample test after forming. The springback and deformation of bending parts are mainly manifested in two aspects: one is that the forming radian of some parts meets the requirements of the drawing without casting; the other is that the symmetry of some parts fails to meet the requirements of the drawing. However, the standard cambric surface shall comply with the provisions of the test samples R87 and R147, and the clearance between the cambric surface and the sample shall not be greater than 0.4mm, the distance between the other cambric surfaces and the plane shall not be greater than 0.6mm, and the symmetry degree of both sides of the cambric surface shall not be greater than 0.1mm. As long as there are more than 100 rows of the same shape, it can be assembled into a qualified row combination to meet the clearance requirements with other parts. In the development and research of light industry, energy saving, environmental protection products, for many years for our country's light industry machinery and agricultural machinery modernization has made outstanding contributions, the research of peanuts, energy saving battery car, corn harvester and other machinery has been widely accepted by the market, by the majority of farmers with production of large-scale casting households welcome. Annual output value of 7.1 million yuan, profit and tax 1.32 million yuan.