CN115382908A - Automobile spring plate fixing pressing plate and manufacturing process thereof - Google Patents

Abstract

The invention relates to a fixed pressing plate of an automobile spring plate and a manufacturing process thereof, wherein the manufacturing process comprises the following steps: 1. the roughing mill group is used for rolling and forming a continuous casting billet into a flat blank by utilizing a box-shaped pass formed by an upper roller and a lower roller; 2. the vertical rolling unit or the flat rolling unit utilizes a pair of rollers to form a vertical box-shaped hole for horizontally widening a rough rolling incoming material so as to meet the requirement of the material shape size entering a finishing rolling unit; 3. a finishing mill group, namely precisely rolling and molding incoming materials of the finishing mill group by using a two-roll continuous mill with 5 to 7 frames to form a plate base body, a left clamping plate, a right clamping plate, a left clamping table and a right clamping table; 4. and processing a fixing hole on the plate base body. The invention creatively adopts a one-step rolling forming manufacturing process to produce the lightweight, high-strength and high-wear-resistance automobile or trailer spring plate fixing pressure plate, thereby not only improving the mechanical property of the pressure plate and effectively preventing the pressure plate from being broken in the using process, but also greatly reducing the manufacturing cost compared with steel castings and forged pieces.

Description

Automobile spring plate fixing pressing plate and manufacturing process thereof

Technical Field

The invention relates to the technical field of machinery and metal rolling processing, in particular to a fixed pressing plate of an automobile spring plate and a manufacturing process thereof.

Background

At present, the fixed pressing plate of the spring plate of any type of automobile and trailer is cast by adopting gray iron and then is painted, the cast iron pressing plate is easy to break due to low strength in the using process, particularly, the semi-circle parts at the two ends of the pressing plate need to bear the pre-tightening and fixing of a U-shaped steel clamp (commonly known as wire coil), and the two semi-circle parts are easy to break after being used for a period of time often, so that the spring plate of the automobile and the trailer is loosened, the automobile is damaged, and traffic accidents are easy to occur. If the pressure plate is made of steel castings or forged parts, although the strength can meet the requirement, the manufacturing cost is greatly increased.

Disclosure of Invention

The invention provides the automobile spring plate fixing pressure plate and the manufacturing process thereof aiming at the defects of the prior art.

The invention is realized through the following technical scheme, and provides an automobile spring plate fixing pressure plate which comprises a plate substrate, a left clamping plate and a right clamping plate, wherein the left clamping plate and the right clamping plate extend obliquely from the left side edge and the right side edge of the plate substrate respectively, a left clamping table and a right clamping table which are arranged along the left-right direction are arranged between the left clamping plate and the right clamping plate, the left clamping plate, the right clamping plate, the left clamping table and the right clamping table are all positioned at the same side of the plate substrate, a left clamping groove which is communicated along the front-back direction is formed between the left clamping plate and the left clamping table, a right clamping groove which is communicated along the front-back direction is formed between the right clamping plate and the right clamping table, fixing holes which are communicated along the thickness direction of the plate substrate are formed between the left clamping plate substrate and the right clamping table, and the left clamping table and the right clamping table are formed by rolling.

The fixed pressing plate of this scheme adopts rolling mode to make, and left cardboard, right cardboard, left ka tai and right ka tai all are rolling integrated into one piece with the board base member, have both guaranteed service function, have satisfied the strength requirement simultaneously.

Preferably, the bottoms of the left clamping groove and the right clamping groove are both arc-shaped. According to the optimization scheme, the left clamping groove and the right clamping groove are arranged to be arc-shaped, so that stress concentration formed at the bottom of the clamping groove is avoided, and the clamping groove is prevented from being broken in the using process.

As optimization, the included angle between the left clamping plate and the plate base body and the included angle between the right clamping plate and the plate base body are obtuse angles. The setting of this optimization scheme more conveniently forms left draw-in groove and right draw-in groove through rolling, is convenient for eliminate the stress concentration of cardboard and board base member transition department when rolling simultaneously.

This scheme still provides the manufacturing process of above-mentioned car spring board stationary platen, includes following step:

1. the roughing mill group is used for rolling and forming the continuous casting billet into a flat blank by utilizing a box-shaped pass formed by an upper roller and a lower roller;

2. the vertical rolling mill set or the flat rolling mill set utilizes vertical box-shaped holes formed by upper and lower arranged rollers or left and right arranged rollers to horizontally widen a rough rolling incoming material, so that the material shape size required by entering a finishing mill set is met;

3. a finishing mill group, which precisely rolls and shapes the incoming material of the finishing mill group or the flat rolling mill group by using 5 to 7 two-roll continuous rolling mills to form a plate substrate, a left clamping plate, a right clamping plate, a left clamping table and a right clamping table;

4. and a fixing hole is processed on the plate base body and is positioned between the left clamping table and the right clamping table.

According to the scheme, the flat blank is formed through rough rolling, then the height of the blank is increased and the width of the blank is reduced by adopting a vertical rolling mode, and then the structure of the pressing plate is formed by adopting a flat rolling mode, so that metal rolling deformation is completed, and the automobile spring plate fixing pressing plate meeting the use requirements is obtained.

Preferably, during rough rolling, the upper surface and the lower surface of the continuous casting billet with the rectangular or square cross section are rolled into grooves, and then the upper surface and the lower surface of the billet with the grooves are rolled to be level to form the flat billet. According to the optimized scheme, the grooves are firstly rolled and then rolled flat, the rolling deformation of metal is fully utilized, and the mechanical property of the blank is improved.

Preferably, the grooves are located in the middle of the blank in the left-right direction, in the rough rolling process, a first group of roll passes, a second group of roll passes, a third group of roll passes, a fourth group of roll passes and a fifth group of roll passes are sequentially used, arc-shaped grooves are formed through the first group of roll passes, the depth of the grooves is increased through the second group of roll passes, the groove bottoms and the groove side walls of the arc-shaped grooves are respectively rolled into straight sections through the third group of roll passes to form trapezoidal grooves, the depth of the trapezoidal grooves is increased through the fourth group of roll passes, and the upper surface and the lower surface of the blank are respectively rolled into planes through the fifth group of roll passes. In the rough rolling process of the optimized scheme, the depth of the groove is firstly changed from small to large and then from large to small, the groove is changed from arc to a straight section and then eliminated, so that the metal is rolled more fully, and the mechanical property of the pressing plate is further improved.

Preferably, the thickness of the intermediate blank formed by the vertical rolling is reduced from the middle to two sides. The vertical rolling of the optimized scheme can provide enough rolling amount for the flat rolling while improving the mechanical property of the pressing plate, and simultaneously provides guarantee for the final forming of the pressing plate.

As optimization, in the flat rolling process, a seventh group of roll passes, an eighth group of roll passes, a ninth group of roll passes and a tenth group of roll passes are used in sequence; rolling the upper surface of the blank through a seventh group of roll pass to form a flat-bottom sink groove and groove bodies respectively positioned at the left side and the right side of the sink groove, wherein the groove bodies are arc-shaped, two flanges distributed along the left-right direction are formed on the lower surface of the blank, the groove bodies at the left side of the sink groove and the groove bodies at the right side of the sink groove and the sink groove are respectively in transition through flat sections, and the two flanges are respectively positioned below the two flat sections; the depth of the sink groove and the radius of the groove body are increased through the eighth group of roll pass, and the height of the flange is reduced; the depth of the sink groove and the radius of the groove body are further increased through the ninth group of roll pass, the height of the flange is further reduced, and the left end and the right end of the upper surface of the blank form flat sections; and forming a plate base body, a left clamping plate, a right clamping plate, a left clamping table and a right clamping table through a tenth group of roll pass, and rolling the bottom surface of the plate base body into a plane. In the flat rolling process of the optimized scheme, the depths of the flat-bottom sink groove and the groove bodies on two sides are gradually increased, and the heights of the flanges are gradually reduced, so that the inside of the pressing plate is more compact, and the compression ratio is improved.

The invention has the beneficial effects that: the manufacturing process of one-step rolling forming is creatively adopted to produce the lightweight, high-strength and high-wear-resistance automobile or trailer spring plate fixing pressing plate, the mechanical property of the pressing plate is improved, the pressing plate is effectively prevented from being broken in the using process, and the manufacturing cost is greatly reduced compared with a steel casting and a forging piece.

Drawings

FIG. 1 is a view of a first set of roll bore patterns in accordance with the present invention;

FIG. 2 is a diagram of the second set of roll hole patterns of the present invention;

FIG. 3 is a diagram of a third set of roll hole patterns in accordance with the present invention;

FIG. 4 is a bore pattern of a fourth set of rolls according to the present invention;

FIG. 5 is a diagram of the fifth set of roll hole patterns of the present invention;

FIG. 6 is a diagram of a sixth set of roll hole patterns in accordance with the present invention;

FIG. 7 is a view of a seventh set of roll hole patterns in accordance with the present invention;

FIG. 8 is a view of the eighth set of roll holes of the present invention;

FIG. 9 is a diagram of a ninth set of roll hole patterns in accordance with the present invention;

FIG. 10 is a view of a tenth set of roll patterns in accordance with the present invention;

FIG. 11 is a schematic view of a platen according to the present invention;

FIG. 12 is a side view of the platen of the present invention;

shown in the figure:

1. the groove comprises a groove body, 2, a flat blank, 3, an intermediate blank, 4, a sink groove, 5, a groove body, 6 and a flange.

Detailed Description

At present, in the automobile industry, the manufacturing process of the automobile spring plate fixed pressing plate adopts casting, cast iron is used for casting, and the strength is low, so that the fracture phenomenon is easy to occur, and the manufacturing cost of cast steel is high. Compared with casting technology, the cost is low, the structure is light, the performance is good, and the environmental pollution is reduced. In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.

As shown in fig. 11, a fixed pressing plate for automobile spring plates comprises a plate base body, and a left clamping plate and a right clamping plate which are obliquely extended from the left side and the right side of the plate base body respectively, wherein a left clamping table and a right clamping table which are arranged along the left-right direction are arranged between the left clamping plate and the right clamping plate, the left clamping plate, the right clamping plate, the left clamping table and the right clamping table are located at the same side of the plate base body, a left clamping groove which is communicated along the front-back direction is formed between the left clamping plate and the left clamping table, a right clamping groove which is communicated along the front-back direction is formed between the right clamping plate and the right clamping table, the groove bottoms of the left clamping groove and the right clamping groove are arc-shaped, a fixing hole which is communicated with the thickness direction of the plate base body is formed between the left clamping plate and the right clamping table, the left clamping plate, the right clamping plate, the left clamping table and the right clamping table are formed by rolling, the left clamping plate, the right clamping plate, the left clamping table and the right clamping table are integrally formed with the plate base body, the included angle between the left clamping plate base body and the right clamping table and the plate base body is an obtuse angle.

The manufacturing process of the automobile spring plate fixing pressure plate comprises the following steps:

1. the roughing mill group rolls and forms the continuous casting billet into a flat billet by utilizing a box pass formed by an upper roller and a lower roller. Specifically, as shown in fig. 1 to 5, in the rough rolling, a continuous casting blank with a rectangular or square cross section is heated to a certain temperature through a heating furnace, grooves 1 are rolled on the upper surface and the lower surface of the continuous casting blank, and then the upper surface and the lower surface of the blank with the grooves are rolled to be flush, so that a flat blank 2 is formed. The groove 1 is positioned in the middle of the left and right direction of the blank, in the rough rolling process, a first group of roll pass, a second group of roll pass, a third group of roll pass, a fourth group of roll pass and a fifth group of roll pass are sequentially used, an arc-shaped groove is formed through the first group of roll pass, the depth of the groove is increased through the second group of roll pass, the groove bottom and the groove side wall of the arc-shaped groove are respectively rolled into straight sections through the third group of roll pass to form a trapezoidal groove, the depth of the trapezoidal groove is increased through the fourth group of roll pass, and the upper surface and the lower surface of the blank are respectively rolled into planes through the fifth group of roll pass to eliminate the groove 1.

2. A vertical rolling mill set or a flat rolling mill set forms a vertical box-shaped hole by utilizing a pair of rollers arranged up and down or a pair of rollers arranged left and right to horizontally widen a rough rolling incoming material, so that the material shape size required by entering a finishing mill set is met. In the present example, the vertical rolling mill train was used to roll a flat material slab using a sixth set of roll passes, and as shown in fig. 6, the flat material slab was rolled by a pair of rolls arranged left and right, so that the horizontal dimension of the flat material slab was reduced, the vertical dimension thereof was increased, and an intermediate material slab 3 was formed, and the thickness of the intermediate material slab formed by the vertical rolling was reduced from the center to both sides.

3. And the finishing mill group uses 5-7 two-roll continuous mills to precisely roll and form the incoming material of the vertical mill group or the flat mill group to form a plate substrate, a left clamping plate, a right clamping plate, a left clamping table and a right clamping table. As shown in fig. 7 to 10, in the present embodiment, in the finish rolling process, the intermediate blank is rolled using the seventh group roll pass, the eighth group roll pass, the ninth group roll pass, and the tenth group roll pass in this order; rolling the upper surface of the blank through a seventh group of roll pass to form a flat-bottom sink groove 4 and groove bodies 5 respectively positioned at the left side and the right side of the sink groove 4, wherein the groove bodies are arc-shaped, two flanges 6 distributed along the left-right direction are formed on the lower surface of the blank, the bottom surface of each flange 6 is arc-shaped, the groove body at the left side of the sink groove and the sink groove, the groove body at the right side of the sink groove and the sink groove are respectively in transition through flat sections, and the two flanges are respectively positioned below the two flat sections; the depth of the sink groove and the radius of the groove body are increased through the eighth group of roll pass, the height of the flange is reduced, and the radius of a transition fillet between the bottom surface of the material blank and the side surface of the material blank is reduced; the depth of the sink groove and the radius of the groove body are further increased through a ninth group of roll pass, the height of the flange is further reduced, and the left end and the right end of the upper surface of the blank form flat sections; form board base member, left cardboard, right cardboard, left ka tai and right ka tai through tenth group's roll pass to roll into the plane with the bottom surface of board base member, form semi-manufactured goods, it is concrete, the bottom plate of blank corresponds forms the board base member, and the cell body corresponds the draw-in groove that forms on the clamp plate, and the flat section between heavy groove and the cell body corresponds forms ka tai, and the side that the heavy groove was kept away from to the cell body corresponds forms the cardboard.

4. And (3) cooling the semi-finished product, sawing the semi-finished product according to the required size to form a plurality of single products, performing shot blasting treatment on the single products, punching a fixing hole on the plate substrate, wherein the fixing hole is positioned between the left clamping table and the right clamping table, and the fixing hole is positioned at the central position of the plate substrate to obtain the finished product pressing plate.

The manufacturing process of the embodiment is changed from traditional casting forming into rolling forming, metal rolling deformation is completed through a rough rolling cogging mill and a medium finishing mill group and by designing a special-shaped hole pattern system, the metal compression ratio is up to 15, and the mechanical property of the pressing plate is improved through water penetration rolling control and cooling control of a finished product rolling mill. The weight of a single block of the existing cast pressing plate is about 1.2KG, according to the use characteristics of the pressing plate, the structure of the pressing plate has the characteristics of light weight, high stability and easiness in fixation, and the weight of each block of the pressing plate manufactured by the process is 0.95Kg. The mechanical property of the pressing plate is improved, the weight is reduced, and the phenomenon of fracture caused by pre-tightening and fixing of the U-shaped steel clamp is thoroughly eliminated.

The pressing plate of the automobile spring plate, which is light in weight, high in performance and easy to fix and use, is produced by independently designing a special-shaped steel hole type system and through a series of process routes of heating, rolling, cooling, straightening, sawing, punching, shearing, punching, spraying paint and the like.

Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.

Claims (8)

1. The utility model provides an automobile spring board stationary platen which characterized in that: including the base member, and respectively certainly left cardboard, right cardboard that the left and right side limit slope of base member extends are provided with left card platform and the right card platform of arranging along left right direction between left cardboard and the right cardboard, left cardboard, right cardboard, left card platform and right card platform all are located the homonymy of base member, form the left draw-in groove that link up along the fore-and-aft direction between left cardboard and the left card platform, form the right draw-in groove that link up along the fore-and-aft direction between right cardboard and the right card platform, be equipped with the fixed orifices that link up base member thickness direction between left card platform and the right card platform, left cardboard, right cardboard, left card platform and right card platform all form through rolling.

2. The automotive spring plate fixing pressure plate as claimed in claim 1, characterized in that: the bottoms of the left clamping groove and the right clamping groove are both arc-shaped.

3. The automotive spring plate holding clamp of claim 1, wherein: the included angle between the left clamping plate and the plate base body and the included angle between the right clamping plate and the plate base body are obtuse angles.

4. A manufacturing process of the automobile spring plate fixing and pressing plate as claimed in any one of claims 1 to 3 is characterized by comprising the following steps:

(1) The roughing mill group is used for rolling and forming a continuous casting billet into a flat blank by utilizing a box-shaped pass formed by an upper roller and a lower roller;

(2) The vertical rolling mill set or the flat rolling mill set utilizes vertical box-shaped holes formed by upper and lower arranged rollers or left and right arranged rollers to horizontally widen a rough rolling incoming material, so that the material shape size required by entering a finishing mill set is met;

(3) A finishing mill group, which precisely rolls and shapes the incoming material of the finishing mill group or the flat rolling mill group by using 5 to 7 two-roll continuous rolling mills to form a plate substrate, a left clamping plate, a right clamping plate, a left clamping table and a right clamping table;

(4) And processing a fixing hole on the plate base body.

5. The manufacturing process of claim 4, wherein: and during rough rolling, rolling grooves on the upper surface and the lower surface of the continuous casting blank with a rectangular or square cross section, and then rolling the upper surface and the lower surface of the blank with the grooves to be flush to form the flat blank.

6. The manufacturing process according to claim 5, characterized in that: the groove is positioned in the middle of the left and right direction of the blank, in the rough rolling process, a first group of roll pass, a second group of roll pass, a third group of roll pass, a fourth group of roll pass and a fifth group of roll pass are sequentially used, the arc-shaped groove is formed through the first group of roll pass, the depth of the groove is increased through the second group of roll pass, the groove bottom and the groove side wall of the arc-shaped groove are respectively rolled into straight sections through the third group of roll pass to form a trapezoidal groove, the depth of the trapezoidal groove is increased through the fourth group of roll pass, and the upper surface and the lower surface of the blank are respectively rolled into planes through the fifth group of roll pass.

7. The manufacturing process of claim 4, wherein: the thickness of the intermediate blank formed by the vertical rolling is reduced from the middle to two sides.

8. The manufacturing process of claim 4, wherein: in the flat rolling process, a seventh group of roll passes, an eighth group of roll passes, a ninth group of roll passes and a tenth group of roll passes are used in sequence; rolling the upper surface of the blank through a seventh group of roll pass to form a flat-bottom sink groove and groove bodies respectively positioned at the left side and the right side of the sink groove, wherein the groove bodies are arc-shaped, two flanges distributed along the left-right direction are formed on the lower surface of the blank, the groove bodies at the left side of the sink groove and the groove bodies at the right side of the sink groove and the sink groove are respectively in transition through flat sections, and the two flanges are respectively positioned below the two flat sections; the depth of the sink groove and the radius of the groove body are increased through the eighth group of roll pass, and the height of the flange is reduced; the depth of the sink groove and the radius of the groove body are further increased through a ninth group of roll pass, the height of the flange is further reduced, and the left end and the right end of the upper surface of the blank form flat sections; and forming a plate base body, a left clamping plate, a right clamping plate, a left clamping table and a right clamping table through the tenth group of roll pass, and rolling the bottom surface of the plate base body into a plane.

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