CN103143892A - Forming method for vehicle head covering - Google Patents

Abstract

The invention discloses a forming method for a vehicle head covering. The method comprises the steps as follows: step one, analyzing a drawing; step two, detecting a wood pattern; step three, preforming; step four, performing damper forming; and step five, cutting edges and shaping. The forming method solves the problems that the labor intensity is high, the efficiency is low, and the rejection rate of the covering is high due to non-uniform steps for processing the vehicle head covering and unreasonable processing sequence.

Description

The headstock covering forming method

Technical field

The present invention relates to headstock front end covering forming method.

Background technology

Shake hammer out the type technology and bringing into play great function in speed car, the manufacturing of urban rail car carbody, shaking simultaneously hammer out, the type technology is irreplaceable in enterprise produces.Forming technique means chipless, accurately sheet metal and section bar are carried out the chipless cold forming with minimum noise, comprise compression, extend, be pressed into arch, pressing, flattening-out, moulding again, the draw, bend pipe etc., same equipment can carry out shape bending, plate forming processing also can be used for maintenance and final accurate correction work.

The covering forming employing is shaken type, craft hammer out and is repaiied the processing of type method, and due to the procedure of processing disunity, the unreasonable labour intensity that causes of processing sequence is large, and efficient is low, and the covering percent defective is high.The surface quality of covering requires very high, because the unordered surface quality of covering that makes of selecting of the instrument of correcting use can't guarantee.As: as hardwood hammer, aluminium hammer, roller and platform etc.Headstock covering forming spare can not be followed processing method, and covering forming is three-dimensionally shaped, and difficulty of processing is large, can not use for reference method of operating, and the machine-shaping process time is long, and Forming Quality is difficult to ensure card.

Summary of the invention

The purpose of this invention is to provide a kind of headstock covering forming method, make procedure of processing more reasonable, the tools selection standard improves working (machining) efficiency, product quality, and the rate of reducing the number of rejects and seconds reduces operator's labour intensity.

For achieving the above object, the invention provides a kind of headstock covering forming method, comprise the first step: analyze drawing, determine processing scheme by analytic product figure, select mould according to vehicle material skin morph degree, characterized by further comprising:

Second step: detect wooden model

Select wooden model according to drawing, each size of Measurement accuracy wooden model is carried out segmentation according to wooden model simultaneously, determines the processing coefficient;

The 3rd step: give moulding

Adopt the lock press to do and give first moulding, according to different wooden model shapes, select different feeding styles, adjust device travel, according to the size of radius of the radian, take different coefficients, can increase work efficiency like this, guarantee simultaneously the covering quality;

The 4th step: shake type hammer out

To give the moulding covering and further go to complete on shake hammer machine, and adjust operating pressure according to material, distortion size, covering is out of shape through stressed the generation gradually, constantly measure with model simultaneously, be easy to judge the covering defective, repeatedly impact with the shake hammer, the manual rectification as auxiliary, the covering profile is determined;

The 5th step: cut edge is repaiied type

Covering detects with wooden model after shaking hammer out type, accurately rules according to wooden model, prescind allowance, again contrast wooden model and carry out the secondary reparation, adopt the post forming of shake hammer to repair type with craft and combine, covering is accurately repaired, made covering meet wooden model fully, accurately reach the drawing specification requirement.

The present invention has fundamentally solved the problem that exists on the forming method, and the employee is being improved the quality of products, playing directive function aspect production efficiency.

The specific embodiment

The first step: analyze drawing

Determine processing scheme by analytic product figure, at first grasp the three-dimensional shape of workpiece by the three-view diagram of drawing; See left view, right view, top view, cutaway view, fragmentary detail view is understood contour structure, graph of a correspondence position; Next middle size marking with the aid of pictures, the tolerance grade requirement of processing comprises roughness, sheet metal thickness, Material texture and specification requirement; Covering has carbon steel, stainless steel, aluminium alloy structure, and according to the vehicle material, the skin morph complexity is selected suitable shake hammer mould;

Second step: detect wooden model

Select wooden model according to the 3 D stereo drawing, usually the headstock covering is spliced by some wooden models, the suitable three-dimensional template of wooden model, wooden model must meet product figure and technological requirement, its dimensional discrepancy, deviation of centre distance, plane deviation, technique annex deviation, fillet deviation, allowance deviation, highly, gradient.Simultaneously according to wooden model, the science segmentation is carried out at the processed complex position, simple be difficult to the moulding section separate machined, covering adds man-hour, it compresses to the inside, is dwindled gradually outward by interior, the outside produces and stretches, and by dwindling gradually inward, determines the processing coefficient outward;

The 3rd step: preformed

Slab processing covering is very difficult, and moulding is also bad, and operating efficiency is extremely low, adopt lock press or levelling machine to do moulding in advance, according to different wooden model shapes, select different feeding styles, adjust device travel, according to the size of radius of the radian R, take different coefficients, the above selection smoothing of R400 preformed, the preformed of the following selection of R300 lock press, adopt different feeding styles according to wooden model arc, gradient, can increase work efficiency like this, guarantee simultaneously the covering quality;

The 4th step: shake type hammer out

shake hammer mould is selected the FWA602 compression mold, to give the moulding covering and further go to complete on shake hammer machine, according to material, the distortion size is adjusted operating pressure 64N, gradually reduced inwards by the covering edge, the edge operating pressure increases gradually, operating pressure is by reducing greatly inwards, covering is out of shape through stressed the generation gradually, the skin-surface distortion impacts gently with the shake hammer, operating pressure is 60N, deformation place is gradually to border movement, constantly measure with wooden model simultaneously, be easy to judge the covering defective, repeatedly impact with the shake hammer, the manual rectification as auxiliary, the covering profile is determined,

The 5th step: cut edge is repaiied type

Covering is after shaking hammer out type, carefully detect with wooden model, accurately rule according to wooden model, prescind allowance, covering cut edge back edge produces thermal deformation, again contrast wooden model and carry out the secondary reparation, adopt the post forming of shake hammer to repair type and combine with manual, the covering edge is hammered compression mould into shape and is impacted with shaking, the covering edge dodges the less employing repaired by hand of seam, skin-surface is accurately repaired, made covering meet wooden model fully, accurately reach the drawing specification requirement.

Claims (1)

1. headstock covering forming method comprises the first step: analyze drawing, determine processing scheme by analytic product figure, according to vehicle material skin morph degree selection mould, characterized by further comprising:

Second step: detect wooden model

Select wooden model according to drawing, each size of Measurement accuracy wooden model is carried out segmentation according to wooden model simultaneously, determines the processing coefficient;

The 3rd step: give moulding

Adopt the lock press to do and give first moulding, according to different wooden model shapes, select different feeding styles, adjust device travel, according to the size of radius of the radian, take different coefficients, can increase work efficiency like this, guarantee simultaneously the covering quality;

The 4th step: shake type hammer out

To give the moulding covering and further go to complete on shake hammer machine, and adjust operating pressure according to material, distortion size, covering is out of shape through stressed the generation gradually, constantly measure with model simultaneously, be easy to judge the covering defective, repeatedly impact with the shake hammer, the manual rectification as auxiliary, the covering profile is determined;

The 5th step: cut edge is repaiied type

Covering detects with wooden model after shaking hammer out type, accurately rules according to wooden model, prescind allowance, again contrast wooden model and carry out the secondary reparation, adopt the post forming of shake hammer to repair type with craft and combine, covering is accurately repaired, made covering meet wooden model fully, accurately reach the drawing specification requirement.