CN102962360A

CN102962360A - Stamping drawing forming die for inner-hole double-faced boss and technological method thereof

Info

Publication number: CN102962360A
Application number: CN201210508255XA
Authority: CN
Inventors: 林苏华; 罗广梅; 王铁璇; 刘井龙
Original assignee: XIAMEN JIEXUN AUTOMOBILE PARTS CO Ltd
Current assignee: XIAMEN JIEXUN AUTOMOBILE PARTS CO Ltd
Priority date: 2012-12-03
Filing date: 2012-12-03
Publication date: 2013-03-13
Anticipated expiration: 2032-12-03
Also published as: CN102962360B

Abstract

A stamping drawing forming die for an inner-hole double-faced boss comprises mutually matched female and male dies and an elastic material press plate, and is characterized in that the mutually matched female and male dies are provided with a first pre-forming die, a second pre-forming die and a third forming die, wherein the contour shape of the front end of a male die of the first pre-forming die consists of two involutes with different radiuses, the front end of a male die of the second pre-forming die is provided with an annular step surface, and the contour shape of the front end of a male die of the third forming die consists of multiple levels of involutes with different radiuses. The technological process is simple, the production efficiency is high, the utilization ratio of raw materials is high, and the stamping drawing forming die for the inner-hole double-faced boss has a wide practical economic value.

Description

A kind of endoporus two-sided boss punching press deep-drawing shaping die and process thereof

Technical field

The present invention relates to a kind of diel and forming method thereof, refer in particular to a kind of endoporus two-sided boss punching press deep-drawing shaping die and process thereof.

Background technology

Current automobile making all increases its load-bearing capacity making great efforts to alleviate engine weight, Fig. 1, shown in Figure 2 be two kinds of high-end belt pulley products in the automobile engine of arising at the historic moment, because their support former is positioned at belt load and bearing centre place, thus they have lightweight, intensity is high, the large advantage of exerting oneself.Their manufacturing process is to cast first or the forging material base, and then be processed into belt pulley through turning.This its shortcoming of traditional handicraft method is: quality is more unstable, dynamic balancing is poor, pore, slag inclusion, loose, metallographic structure is inhomogeneous etc., production efficiency is low, utilization rate of raw materials is low, taking a lot of work effort expense material, processing cost is high economically.If be blank with round plate with holes shown in Figure 3, allow its endoporus form first the two-sided boss of certain thickness and height, as shown in Figure 6, again this semi-finished articles rotary pressing processing is become Fig. 1 or Fig. 2 belt pulley, will make manufacturing process become very succinct and easy, and the product quality new step that will inevitably rise.

In order to obtain the two-sided boss of endoporus, the insider is exploring always, attempt to carry out two-sided pull and stretch by the simplest process, but only rely on common mould and do not reach requirement with simple technical process control, tend to cause material deformation excessively (to surpass material deformation values allowable), the product fracture has to give up halfway.If take the method for spinning to produce the two-sided boss of endoporus with round plate with holes, also a lot of adverse consequences can appear, because the spinning to this shape material can change and destroy the original rolling internal organizational structure of material and metal streamline, thereby reduce greatly original intensity of metal, even can't carry out finite element analysis to its intensity; Simultaneously, extremely coarse as its spoke surface of belt pulley product that blank processes with this goods, process very not attractive in appearance, thereby this is in fact also infeasible.

Summary of the invention

The present invention will solve above-mentioned technological deficiency of the prior art, provides a kind of technical process succinct, and production efficiency is high, and utilization rate of raw materials is high, has endoporus two-sided boss punching press deep-drawing shaping die and process thereof that wide Applied economy is worth.

In order to solve the problems of the technologies described above, technical scheme of the present invention is: the two-sided boss punching press of a kind of endoporus deep-drawing shaping die, comprise the concave-convex mold and the elastic material plate that cooperatively interact, it is characterized in that: the described concave-convex mold that cooperatively interacts has the first preforming tool, the second preforming tool and the 3rd mould, the punch front end contour shape of the first preforming tool is comprised of the involute of two sections different radiis, the punch front end of the second preforming tool has an annular table terrace, and the punch front end profile of the 3rd mould is comprised of the involute of multistage different radii.

Further the endoporus place of the elastic material plate of described the 3rd mould has groove.

Employing comprises following concrete steps with the two-sided boss punching press of the endoporus of mold drawing and forming process:

Step 1: round plate blank with holes location is placed on the die of the first preforming tool, compresses with the elastic material plate, it is descending, compressing at a slow speed that hydraulic press drives the punch of the first preforming tool, forms the first boss;

Step 2: hydraulic press is up, workpiece taken out, and turn-over, the location is placed on the die of the second preforming tool;

Step 3: compress workpiece on the second preforming tool die with the elastic material plate, it is descending, compressing at a slow speed that hydraulic press drives the punch of the second preforming tool, forms second miniature boss;

Step 4: hydraulic press is up, and workpiece is taken out, and the location is placed on the die of the 3rd mould;

Step 5: compress workpiece on the 3rd mould die with the elastic material plate, it is descending, compressing at a slow speed that hydraulic press drives the punch of the 3rd mould, forms the second boss;

Step 6: hydraulic press is up, will finish workpiece and take out.

Further, described process is by the descending degree of depth and the speed of PLC system control hydraulic press.

The finished surface of the product that employing is produced with mold and process has and the identical fineness in material base surface, the inside metallographic of product have metal streamline continuously, the characteristics of dense structure, the structural strength of product increases.

Description of drawings

Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.

Fig. 1 is existing high strength leather belt wheel finished product one;

Fig. 2 is existing high strength leather belt wheel finished product two;

Fig. 3 is the used round plate blank with holes of the present invention;

Fig. 4 is the workpiece that the present invention's the first preforming tool is finished;

Fig. 5 is the workpiece that the present invention's the second preforming tool is finished;

Fig. 6 is the two-sided boss molded article of endoporus that the present invention makes;

Fig. 7 the present invention the first preforming tool;

Fig. 8 the present invention the second preforming tool;

Fig. 9 the present invention the 3rd mould;

Figure 10 is the inside metallograph that the present invention makes workpiece;

Figure 11 is the inside metallograph that prior art is made workpiece;

Wherein: 1, round plate blank, 11, endoporus, the 12, first boss, 13, second miniature boss, 14, the second boss, 2, die, 3, the elastic material plate, the 4, first preformed punch, 5, the second preformed punch, the 6, the 3rd forming convax mould, the 7, the 3rd forming elastic holding pad.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the present invention will be further described.

Two kinds of high-end belt pulley product structure figure in Fig. 1, the existing automobile engine shown in Figure 2.

The variation that Fig. 3, Fig. 4, Fig. 5, round plate blank shown in Figure 61 occur through Mould Machining to two-sided boss workpiece.

Fig. 7 is the first preforming tool, comprises die 2, punch 4, elastic material plate 3, and punch 4 front end contour shapes are comprised of the involute of two sections different radiis.Round plate blank 1 location is placed on the die 2, compress round plate blank 1 with elastic material plate 3, the center line of punch 4 aligns with the center line of the endoporus 11 of round plate blank 1, it is descending compressing at a slow speed that hydraulic press drives punch 4, form the first boss 12, the first preforming tools and finish workpiece as shown in Figure 4.

Fig. 8 is the second preforming tool, comprises die 2, punch 5, elastic material plate 3, and the front end of punch 5 has an annular table terrace.To be placed on the die 2 through the workpiece turn-over location that the first preforming tool is finished, the first boss 12 of the size of the annular table terrace of punch 5 and round plate blank 1 cooperatively interacts, compress round plate blank 1 with elastic material plate 3, it is descending compressing at a slow speed that hydraulic press drives punch 5, form second miniature boss 13, the second preforming tool and finish workpiece as shown in Figure 5.

Fig. 9 is the 3rd mould, comprises die 2, punch 6, the 3rd forming elastic holding pad 7, and the front end profile of punch 6 is comprised of the involute of multistage different radii, and elastic material plate 7 endoporus places have groove.To be placed on the die 2 through the workpiece location that the second preforming tool is finished, compress round plate blank 1 with elastic material plate 3, the first boss 12 of the groove on the 3rd forming elastic holding pad 7 and round plate blank 1 cooperatively interacts, it is descending compressing at a slow speed that hydraulic press drives punch 6, form the second boss 14, the three moulds and finish workpiece such as Fig. 6.

Figure 10, Figure 11 are respectively that the present invention produces the inside metallograph of product and the interiors of products metallograph that prior art is made, contrast is found, the product that prior art is made, metal streamline obviously is cut off in the product metallograph, dense structure's degree remains unchanged, and metal streamline is continuous in the product metallograph that the present invention produces, dense structure, and the structural strength of product improves.

Although specifically show and introduced the present invention in conjunction with preferred embodiment; but the those skilled in the art should be understood that; within not breaking away from the spirit and scope of the present invention that appended claims limits; in the form and details the present invention is made a variety of changes, be protection scope of the present invention.

Claims

1. the two-sided boss punching press of endoporus deep-drawing shaping die, comprise the concave-convex mold and the elastic material plate that cooperatively interact, it is characterized in that: the described concave-convex mold that cooperatively interacts has the first preforming tool, the second preforming tool and the 3rd mould, the punch front end contour shape of the first preforming tool is comprised of the involute of two sections different radiis, the punch front end of the second preforming tool has an annular table terrace, and the punch front end profile of the 3rd mould is comprised of the involute of multistage different radii.

2. the two-sided boss punching press of endoporus according to claim 1 deep-drawing shaping die, it is characterized in that: the endoporus place of the elastic material plate of described the 3rd mould has groove.

3. the two-sided boss punching press of an endoporus drawing and forming process adopts claim 1 or 2 described moulds, it is characterized in that: may further comprise the steps:

Step 6: hydraulic press is up, will finish workpiece and take out.

4. the two-sided boss punching press of endoporus according to claim 3 drawing and forming process is characterized in that: by descending speed and the degree of depth of PLC system control hydraulic press.