CN113275422A

CN113275422A - Automobile air suspension Z-shaped guide arm forming machine and forming method thereof

Info

Publication number: CN113275422A
Application number: CN202110541781.5A
Authority: CN
Inventors: 赵飞; 陈军; 周敬军; 张志超; 解虎; 耿伟
Original assignee: Zibo Development Zone Zhongyuan Automatic Equipment Co ltd
Current assignee: Zibo Development Zone Zhongyuan Automatic Equipment Co ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2021-08-20

Abstract

The invention relates to an automobile air suspension Z-shaped guide arm forming machine and a forming method thereof, and the forming machine comprises a rack, wherein the rack is provided with an ear hole end upper bending assembly, an ear hole end lower bending assembly, a forming lower die assembly, a middle straight section pressing assembly and a small Z-bending forming assembly, and further comprises a floating Z-bending forming mechanism, the floating Z-bending forming mechanism comprises a Z-bending forming pressing die, the Z-bending forming pressing die comprises a pressing roller and a pressing block, a supporting sliding rail is fixed on the Z-bending forming pressing die, a floating swing seat is arranged on the supporting sliding rail, a first driving oil cylinder is arranged on the floating swing seat, the other end of the driving oil cylinder is connected with the Z-bending forming pressing die, the upper part of the floating swing seat is rotatably arranged on the rack, and the floating swing seat is hinged with a floating oil cylinder. The angle floating of the floating Z-bend forming mechanism and the rotation of the press roll counteract the tensile force of the plate spring, greatly reduce the tensile deformation in the forming process and avoid obvious die indentation. The oil cylinder with the cylinder diameter of 220mm can be used for realizing normal production, and the equipment cost and the volume are reduced.

Description

Automobile air suspension Z-shaped guide arm forming machine and forming method thereof

Technical Field

The invention belongs to the technical field of automobile part forming, and particularly relates to an automobile air suspension Z-shaped guide arm forming machine and a forming method thereof.

Background

The automobile air suspension Z-shaped guide arm forming machine is an intelligent forming device in intelligent basic manufacturing equipment, an automobile suspension system is an important core component in an automobile, and is mainly used for transferring forces and moments in all directions between an automobile frame and an automobile body and relieving impact loads transferred to the automobile body by tires under the conditions of uneven road surface and different loads, so that the running stability of the automobile, the comfort of drivers and passengers, the stability of goods carrying and the service life of relevant parts of the automobile are ensured. At present, the existing automobile suspension system mainly solves the problem of smoothness of an automobile by installing an air suspension air bag on a guide arm to form a stress buffering structure with the guide arm.

In the production process, the quality and the performance of the guide arm are directly influenced by the forming process of the guide arm, so that the safety and the comfort of an automobile are influenced.

The domestic existing guide arm forming machine consists of a gantry type hydraulic machine and a forming die. During production, after a blank of the guide arm is placed into a forming machine, the blank is pressed by the straight end pressing die, the upper and lower forming die pressing dies at the lug hole end guide the lug hole end of the guide arm to be formed, and finally the guide arm is pressed onto the Z-shaped bent lower forming die by the Z-shaped bent upper forming die to finish the Z-shaped bent size required by the process.

In the process of forming the Z-shaped bend, the guide arm is greatly stretched and deformed, so that the thickness of the Z-shaped bend is thinned, and the performance and the service life of the guide arm are directly influenced. In practical production, taking a guide arm with the thickness of 60mm and the width of 120mm as an example, after Z-shaped bending and forming, the thickness of a bending part can be stretched to be about 52-53mm, and obvious die indentation can occur. The forming press machine not only needs to provide the force required by the bending deformation of the plate spring, but also needs to provide a tensile deformation force far exceeding the force required by the bending deformation to press and form the Z-shaped bend, and the larger the height difference of the Z-shaped bend of the guide arm is, the larger the force required by pressing is, so that an oil cylinder with the cylinder diameter of 320mm is required to press and form the guide arm.

Disclosure of Invention

The invention aims to provide an automobile air suspension Z-shaped guide arm forming machine, which solves the problems that the traditional guide arm is easy to stretch and deform at a Z-shaped bend during bending forming, obvious die indentation can occur, and in addition, an oil cylinder with a large diameter is required for driving, so that the mechanical cost is high, and the volume is larger.

The invention relates to an automobile air suspension Z-shaped guide arm forming machine which comprises a rack, wherein an ear hole end upper bending assembly, an ear hole end lower bending assembly, a forming lower die assembly, a middle straight section pressing assembly and a small Z bending forming assembly are arranged on the rack.

The Z-bend forming die comprises a supporting seat plate, the rear end of the supporting seat plate is fixed with a slide rail and is hinged with a driving oil cylinder, two parallel triangular mounting plates are fixed at the front end of the supporting seat plate, a pressing block is fixed between the two triangular mounting plates, and a pressing roller is arranged at the front end of the pressing block and is rotatably mounted at the front corner of the two triangular mounting plates. The manufacture is more convenient, and the structure is simple.

The outside of the floating swing seat is provided with a movable forming frame body, the upper end of the floating swing seat is hinged on the movable forming frame body, adjusting slide rails capable of sliding left and right on the frame are arranged on the front side and the rear side of the movable forming frame body, the other end of the floating oil cylinder is hinged on the movable forming frame body, and the right end of the movable forming frame body is provided with a left and right adjusting device installed on the frame. The guide arm products with different thicknesses are realized by adjusting the distance from the compression roller to the lower forming die through the left and right adjusting devices, the operation is simple and convenient, and the application range is wider.

The left and right adjusting device comprises a turbine adjuster fixed on the rack, the turbine adjuster is connected with a rotating hand wheel, and the worm end of the turbine adjuster is connected with a movable forming rack body. The adjustment is more convenient and simpler.

An adjusting nut is fixed on one side of the floating oil cylinder, an adjusting and limiting screw rod is installed in the adjusting nut, and a limiting block fixed on the rack is arranged at the front end of the floating oil cylinder. The stroke limit can be carried out on the floating oil cylinder, and the floating oil cylinder is prevented from returning or excessively extending.

The ear hole end upper bending assembly comprises a driving oil cylinder II installed on the rack, the driving oil cylinder II is connected with an adjusting seat I, the lower end of the adjusting seat I is fixed with an ear hole end upper bending die, a T-shaped groove is formed in the adjusting seat I, the ear hole end upper bending die is installed on the T-shaped groove through a T-shaped bolt, the position can be adjusted conveniently, the ear hole end lower bending assembly comprises a driving oil cylinder III installed on the rack, the driving oil cylinder III is connected with an adjusting seat II, and the lower end of the adjusting seat II is fixed with an ear hole end lower bending die. And a T-shaped groove is formed in the second adjusting seat, and the lower bending die at the end of the lug hole is arranged on the T-shaped groove through a T-shaped bolt, so that the position can be conveniently adjusted.

The adjusting seat I and the adjusting seat II are both fixed with guide rods, guide sleeves are sleeved on the guide rods and fixed on the rack, guide sliding blocks I are fixed on the outer sides of the adjusting seat I and the adjusting seat I, and guide sliding rails for the guide sliding blocks I to slide up and down are arranged on the rack. The structure is more firm, stretches out more steadily.

The lower forming die assembly comprises a third adjusting seat, a middle straight section supporting die is installed at the top of one end of the third adjusting seat, a Z bending forming supporting die is installed at the top of the other end of the third adjusting seat, a T-shaped groove is formed in the third adjusting seat, the straight section supporting die and the Z bending forming supporting die are installed on the T-shaped groove through T-shaped bolts, the position can be conveniently adjusted, the middle straight section pressing assembly comprises a fourth driving oil cylinder and a middle straight section pressing die connected with the fourth driving oil cylinder, and the small Z bending forming assembly comprises a fifth driving oil cylinder fixed with the frame and a fifth small Z bending forming die fixed with the driving oil cylinder.

The upper bending assembly of the ear hole end, the lower bending assembly of the ear hole end and the middle straight section pressing assembly are respectively provided with a stroke control device, each stroke control device comprises a pair of supporting plates fixed with the frame, an adjusting screw rod and a guiding slide rod are rotatably arranged between the two supporting plates, adjusting screw sleeves are arranged at two ends of the adjusting screw rod, a second guiding slide block which is slidably arranged on the guiding slide rod is fixed on each adjusting screw sleeve, stroke switches are respectively fixed on the second guiding slide blocks at two ends, and driving arms are respectively arranged on the upper bending assembly of the ear hole end, the lower bending assembly of the ear hole end and the middle straight section pressing assembly. The position of the travel switch can be adjusted to adapt to different requirements.

The adjusting screw rod is connected with an adjusting hand wheel, two supporting plates are fixedly connected with an adjusting ruler, a limiting rod is fixed on the outer side of each supporting plate, a length positioning device is installed on a second adjusting seat on one side of the bending die below the end of an ear hole and comprises an installation plate installed on the second adjusting seat, the installation plate is installed in a T-shaped groove through a T-shaped bolt, a supporting plate is fixed to the top of the installation plate, an adjusting oil cylinder is fixed to the supporting plate, the adjusting oil cylinder is connected with an adjusting plate, guide posts are fixed to the rear ends of the two sides of the adjusting plate, guide support sleeves are sleeved on the guide posts, and the guide support sleeves are fixed to the supporting plate. The guide arm to be bent can be quickly positioned.

The invention also provides a method for forming the automobile air suspension Z-shaped guide arm, which comprises the following steps: s1, placing the blank of the guide arm on a middle straight section supporting mould to prepare for press forming, wherein a Z-bending forming pressing mould forms an included angle a with the horizontal plane, and the front end of the Z-bending forming pressing mould is provided with a pressing roller for the Z-bending forming pressing mould to flexibly rotate; s2, pressing the blank of the guide arm on the middle straight section supporting mould by the middle straight section pressing mould; the ear hole end upper bending die and the ear hole end lower bending die are used for completing bending forming of the ear hole end of the guide arm and keeping clamping; the Z-bend forming pressing die keeps pressing in the direction of an angle a; s3, when the Z-bending forming die is pressed downwards and is subjected to excessive resistance, the Z-bending forming die automatically swings by an angle b, then the Z-bending forming die continues to be pressed downwards, and the angle of the Z-bending forming die gradually recovers to a in the pressing process; s4, after the guide arm is bent, the Z-bend forming pressing die, the middle straight section pressing die, the ear hole end upper bending die and the ear hole end lower bending die return, and the guide arm is taken down. The method is characterized in that a Z-shaped bending forming die adopts inclined downward pressing and can be adjusted in a floating way within a certain angle range. The guide arm bending forming type stretching deformation can be effectively avoided through the rotation of the compression roller and the adjustment of the angle, and similarly, the guide arm with the thickness of 60mm and the width of 120mm is taken as an example, the Z-shaped bend can use an oil cylinder with the cylinder diameter of 200mm to complete the forming process.

And a pressing block is arranged behind a pressing roller of the Z-bending forming pressing die, mutually vertical pressing surfaces are arranged at the bottom and the left side of the pressing block, the angle range of the step A in the step S1 is 50-65 degrees, a certain included angle is formed between the top of the middle straight section supporting die and the horizontal plane, the included angle is 0-10 degrees, and the angle range of the step B in the step S3 is 4-5 degrees. The Z-bend forming die consists of a rotatable press roller and a fixed pressing block. During the forming process, the press roller can rotate freely according to the stress.

The forming method of the guide arm is completed by using the automobile air suspension Z-shaped guide arm forming machine.

Compared with the prior art, the invention has the advantages that:

the angle of the floating Z-shaped bending forming mechanism floats and the rotation of the compression roller offsets the tensile force of the plate spring, so that the tensile deformation of the guide arm in the forming process is greatly reduced, and obvious die indentation can not occur. Only the bending deformation force of the guide arm needs to be provided in the forming process, the oil cylinder with the cylinder diameter of 220mm can be used for realizing normal production, and the equipment cost and the volume are reduced. To the curved product that highly is not more than guide arm thickness of guide arm Z type, realize through the curved shaping assembly of small-size Z, use more nimble.

Drawings

FIG. 1 is a schematic structural view of a molding machine of the present invention;

FIG. 2 is a schematic cross-sectional view of the molding machine of the present invention;

FIG. 3 is a schematic cross-sectional view of a Z-bend forming mechanism portion of the forming machine of the present invention;

FIG. 4 is a schematic view, partly in section, of the molding machine of the present invention;

FIG. 5 is a schematic structural view of a stroke control device;

FIG. 6 is a schematic structural view of a Z-bend forming mechanism;

FIG. 7 is a schematic view of a Z-bend forming die;

FIG. 8 is a schematic view of the length positioning device;

FIG. 9 is a schematic view of a first bending process of the forming method of the present invention;

FIG. 10 is a schematic view of a second bending process of the forming method of the present invention;

FIG. 11 is a schematic view of a third bending process of the forming method of the present invention;

FIG. 12 is a fourth schematic view of a bending process of the forming method of the present invention;

FIG. 13 is a schematic diagram of the structure of the roll trajectory of the forming method of the present invention;

FIG. 14 is a schematic view of a first nip roll path of the forming process of the present invention;

FIG. 15 is a schematic view of a second roll path of the forming method of the present invention;

FIG. 16 is a schematic view of a third roll pass of the forming method of the present invention;

in the figure: 1. a frame; 2. the ear hole end is provided with a bending assembly; 201. the adjusting seat I, 202, the driving oil cylinder II, 203, the ear hole end upper bending die, 3 and the middle straight section pressing assembly; 301. the middle straight section compresses the die, 302, drives four, 4, small Z bending forming assembly of the cylinder; 401. a small Z-bend forming die 402, a driving oil cylinder five, 5 and a floating Z-bend forming mechanism; 501. a pressing block 502, a first driving oil cylinder 503, a first supporting slide rail 504, a floating swing seat 505, a movable forming frame body 506, a turbine regulator 507, a rotating hand wheel 508, an adjusting nut 509, an adjusting limit screw rod 510, a floating oil cylinder 511, a limit block 512, a press roll 513, a supporting seat plate 514, an adjusting slide rail 515, a triangular mounting plate 6, a lower forming die assembly 601, a third adjusting seat 602, a middle straight section supporting die 603, a Z bending forming supporting die 7, an ear hole end downward bending assembly 701, a second adjusting seat 702, an ear hole end downward bending die 703, a third driving oil cylinder 8, a length positioning device 801, a guiding sleeve 802, an adjusting plate 803, a support plate 804, a mounting plate 805, an adjusting oil cylinder 806, a guiding column 9, a stroke control device 901, an adjusting hand wheel, a stroke switch 903 and a limit rod, 904. the device comprises an adjusting screw rod 905, a supporting plate 906, a second guide sliding block 907, a second guide sliding rod 908, an adjusting ruler 10, a ladder stand 11, a guide rod 12, a guide sleeve 13, a first guide sliding block 14, a guide sliding rail 15, a driving arm 16 and a Z-bending forming die.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Embodiment 1, as shown in fig. 1 to 8, the invention relates to an automotive air suspension Z-shaped guide arm forming machine, which comprises a frame 1, wherein the frame 1 is provided with an ear hole end upper bending assembly 2, an ear hole end lower bending assembly 7 and a forming lower die assembly 6, the middle straight section pressing assembly 3, the small Z bending forming assembly 4 and the floating Z bending forming mechanism 5 are further included, the floating Z bending forming mechanism 5 comprises a Z bending forming pressing die 16 which is obliquely arranged, the Z bending forming pressing die 16 comprises a pressing roller 512 and a pressing block 501 which are rotatably arranged at the front end of the Z bending forming pressing die 16, a supporting sliding rail 503 which is obliquely arranged is fixed at the rear end of the Z bending forming pressing die 16, a floating swing seat 504 is slidably arranged on the supporting sliding rail 503, a first driving oil cylinder 502 is arranged on the floating swing seat 504, the other end of the first driving oil cylinder 502 is connected with the Z bending forming pressing die 16, the upper portion of the floating swing seat 504 is rotatably arranged on the rack 1, and the lower portion of the floating swing seat 504 is hinged with a floating oil cylinder 510.

The Z-bend forming die 16 comprises a supporting seat plate 513, the rear end of the supporting seat plate 513 is fixed with a sliding rail and hinged with a first driving oil cylinder 502, two parallel triangular mounting plates 515 are fixed at the front end of the supporting seat plate 513, a pressing block 501 is fixed between the two triangular mounting plates 515, and a pressing roller 512 is arranged at the front end of the pressing block 501 and rotatably mounted at the front end corner of the two triangular mounting plates 515.

The outside of the floating swing seat 504 is provided with a movable forming frame body 505, the upper end of the floating swing seat 504 is hinged on the movable forming frame body 505, the front side and the rear side of the movable forming frame body 505 are provided with adjusting slide rails 514 which can slide left and right on the frame 1, the other end of the floating oil cylinder 510 is hinged on the movable forming frame body 505, and the right end of the movable forming frame body 505 is provided with a left and right adjusting device which is arranged on the frame 1.

The left-right adjusting device comprises a turbine adjuster 506 fixed on the frame 1, the turbine adjuster 506 is connected with a rotating handwheel 507, and the worm end of the turbine adjuster 506 is connected with a movable forming frame body 505.

An adjusting nut 508 is fixed on one side of the floating oil cylinder 510, an adjusting limit screw 509 is installed in the adjusting nut 508, and a limit block 511 fixed on the frame 1 is arranged at the front end of the floating oil cylinder 510.

The ear hole end upper bending assembly 2 comprises a driving oil cylinder II 202 installed on the rack 1, the driving oil cylinder II 202 is connected with an adjusting seat I201, an ear hole end upper bending die 203 is fixed at the lower end of the adjusting seat I201, the ear hole end lower bending assembly 7 comprises a driving oil cylinder III 703 installed on the rack 1, the driving oil cylinder III 703 is connected with an adjusting seat II 701, and an ear hole end lower bending die 702 is fixed at the lower end of the adjusting seat II 701.

Guide rods 11 are fixed on the first adjusting seat 201 and the second adjusting seat 701 respectively, guide sleeves 12 are sleeved on the guide rods 11, the guide sleeves 12 are fixed on the rack 1, guide sliding blocks 13 are fixed on the outer sides of the first adjusting seat 201 and the second adjusting seat 701 respectively, and guide sliding rails 14 for the guide sliding blocks 13 to slide up and down are arranged on the rack 1.

The lower forming die assembly 6 comprises a third adjusting seat 601, a middle straight section supporting die 602 is mounted at the top of one end of the third adjusting seat 601, a Z bending forming supporting die 603 is mounted at the top of the other end of the third adjusting seat 601, the middle straight section pressing assembly 3 comprises a driving oil cylinder four 302 and a middle straight section pressing die 301 connected with the driving oil cylinder four 302, and the small Z bending forming assembly 4 comprises a driving oil cylinder five 402 fixed with the frame 1 and a small Z bending forming die 401 fixed with the driving oil cylinder five 402.

The ear hole end upper bending assembly 2, the ear hole end lower bending assembly 7 and the middle straight section pressing assembly 3 are respectively provided with a stroke control device 9, each stroke control device 9 comprises a pair of supporting plates 905 fixed with the frame 1, an adjusting screw rod 904 and a guide sliding rod 907 are rotatably arranged between the two supporting plates 905, adjusting screw sleeves are arranged at two ends of the adjusting screw rod 904, guide sliding blocks 906 slidably arranged on the guide sliding rods 907 are fixed on the adjusting screw sleeves, stroke switches 902 are respectively fixed on the guide sliding blocks 906 at two ends, and driving arms 15 are respectively arranged on the ear hole end upper bending assembly 2, the ear hole end lower bending assembly 7 and the middle straight section pressing assembly 3.

The adjusting screw 904 is connected with an adjusting hand wheel 901, two supporting plates 905 are fixedly connected with an adjusting ruler 908, a limiting rod 903 is fixed on the outer side of the supporting plate 905, a length positioning device 8 is installed on an adjusting seat II 701 on one side of the bending die 702 at the end of an ear hole, the length positioning device 8 comprises an installing plate 804 installed on the adjusting seat II 701, a supporting plate 803 is fixed on the top of the installing plate 804, an adjusting oil cylinder 805 is fixed on the supporting plate 803, the adjusting oil cylinder 805 is connected with an adjusting plate 802, guide columns 806 are fixed at the rear ends of two sides of the adjusting plate 802, guide supporting sleeves 801 are sleeved on the guide columns 806, and the guide supporting sleeves 801 are fixed on the supporting plate 803. A ladder stand 10 is fixed on one side of the frame 1. The Z-bend forming die 16 may float between 55 ° and 60 °. The oil cylinders are all connected with a PLC controller, and the PLC controller is connected with a travel switch.

When the bending machine works, a guide arm to be bent is placed on the middle straight section supporting die 602, then an adjusting oil cylinder 805 of the length positioning device 8 extends out, positioning is carried out by using an adjusting plate 802, then the straight section pressing assembly 3 presses downwards to press the middle section of the guide arm with the middle straight section supporting die 602, then the ear hole end upper bending assembly 2 and the ear hole end lower bending assembly 7 are matched to complete bending forming of an ear hole end of the guide arm and keep clamping, when the Z-shaped bending height of the guide arm is not more than the thickness of the guide arm, the small Z-shaped bending forming assembly 4 descends to realize Z bending, when the Z-shaped bending height of the guide arm is more than the thickness of the guide arm, the first air cylinder 502 is driven to extend out to drive the Z-shaped pressing die 16 to move along an oblique 55 degrees to bend the guide arm in a Z shape, when the guide arm is bent, the pressing roller 512 rotates to offset the tensile force of the plate and bends to a certain degree, the floating oil cylinder 510 can float at 55-50 degrees and then return to the 55-degree position, so that the stretching deformation can be further reduced due to floating, the first driving oil cylinder 502 only needs to overcome the bending deformation force of the guide arm, the pressure is reduced, and the oil cylinder with the smaller diameter can be suitable. The distance from the press roller 512 to the Z-bend forming support die 603 can be adjusted by a left-right adjusting device, so that the guide arm die is suitable for guide arm products with different thicknesses.

Embodiment 2, the present invention further provides a method for forming a Z-shaped guide arm of an automotive air suspension, including the following steps: s1, placing the guide arm blank on the middle straight section supporting die 602 to prepare for press forming, wherein the Z-bend forming die 16 forms an included angle a with the horizontal plane, and the front end of the Z-bend forming die 16 is provided with a pressing roller 512 for the Z-bend forming die to flexibly rotate; as shown in fig. 9, S2, the middle straight section pressing mold 301 presses the guide arm blank against the middle straight section supporting mold 602; the ear hole end upper bending die 203 and the ear hole end lower bending die 702 complete the bending forming of the ear hole end of the guide arm and keep clamping; when the ear hole end is formed, if the bending is not needed, the ear hole end upper bending die 203 and the ear hole end lower bending die 702 only compress the guide arm, and the Z-bend forming die 16 keeps pressing downwards in the direction of the angle a; as shown in fig. 10, in S3, when the Z-bending forming die 16 is pressed down and the resistance is too large, the Z-bending forming die 16 automatically swings by an angle b, and then the Z-bending forming die 16 continues to be pressed down, and the angle of the Z-bending forming die 16 gradually returns to a during the pressing down; as shown in fig. 11 and 12, after the bending of the guide arm is completed at S4, the Z-bend forming die 16, the intermediate flat section pressing die 301, the ear hole end upper bending die 203, and the ear hole end lower bending die 702 are returned to their positions, and the guide arm is removed. The guide arm needs to be heated to 1000 ℃ when being bent. The Z-bend forming die 16 cooperates with the Z-bend forming support die 603 to complete the Z-bend forming.

A pressing block 501 is arranged behind a pressing roller 512 of the Z-bend forming die 16, mutually perpendicular pressing surfaces are arranged at the bottom and the left side of the pressing block 501, the angle range of the step A in S1 is 50-65 degrees, a certain included angle is formed between the top of the middle straight section supporting die 602 and the horizontal plane, the included angle is 0-10 degrees, and the angle range of the step B in S3 is 4-5 degrees.

The forming method of the guide arm was completed using the automotive air suspension Z-shaped guide arm forming machine described in example 1. In using the molding machine, the Z-bending die 16 is mounted in an articulated manner, and the moving track of the Z-bending die 16 is controlled by a driving cylinder 502 and a floating cylinder 510. The first driving oil cylinder 502 provides acting force for Z-bending forming; the floating cylinder 510 is installed with a pressure sensor or a telescopic magnetic ruler, when the pressure applied to the Z-bend forming die 16 reaches a certain value during the Z-bend forming process, the piston rod of the floating cylinder 510 can retract a certain extension length to change the included angle between the Z-bend forming die 16 and the horizontal, so that the curved pressing track of the press roll during the pressing process is realized, as shown in fig. 13, which is a structure diagram of the press roll track.

In fig. 13, a is the thickness of the guide arm, C is the linear distance of the guide roller during pressing, this value is the displacement value of the first driving cylinder, B is the pressing height of the Z-shaped bend, and C is B/sin50 obtained according to the trigonometric function. And measuring the press roll track according to the actual production data.

1. The roll trajectory was measured as shown in fig. 14 when the guide arm thickness a was 60mm and B was 400mm, and C was calculated as 522.16mm, the angle a was 55 degrees, and the angle between the top of the middle straight section support die 602 and the horizontal plane was 5 degrees.

2. The roll trajectory was measured as shown in fig. 15 when the guide arm thickness a was 30mm and B was 100mm, C was calculated as 130.54mm, the angle a was 55 degrees, and the angle between the top of the middle straight section support die 602 and the horizontal plane was 5 degrees.

3. Taking the thickness of the guide arm a as 45 and the thickness of the guide arm B as 300, calculating that C is 391.62mm, the angle a is 55 degrees, and when the included angle between the top of the middle straight section supporting die 602 and the horizontal plane is 5 degrees, the track of the press roll is measured as shown in fig. 16.

The angle floating of the floating Z-bend forming mechanism and the rotation of the press roll counteract the tensile force of the plate spring, greatly reduce the tensile deformation of the guide arm in the forming process, and avoid obvious die indentation. Only the bending deformation force of the guide arm needs to be provided in the forming process, the oil cylinder with the cylinder diameter of 220mm can be used for realizing normal production, and the equipment cost and the volume are reduced. To the curved product that highly is not more than guide arm thickness of guide arm Z type, realize through the curved shaping assembly of small-size Z, use more nimble.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "up", "down", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are for convenience only to describe the present invention without requiring the present invention to be necessarily constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Claims

1. The utility model provides a car air suspension Z type guiding arm make-up machine, includes frame (1), is equipped with ear hole and holds assembly (2) that bends, ear hole end assembly (7) that bends down, shaping lower mould assembly (6), middle straight section compress tightly assembly (3), small-size Z bending assembly (4) its characterized in that on frame (1): still including unsteady Z curved forming mechanism (5), unsteady Z curved forming mechanism (5) are including the curved forming moulding-die (16) of Z that the slope set up, the curved forming moulding-die (16) of Z is including rotating compression roller (512) and briquetting (501) that set up at its front end, the curved forming moulding-die (16) rear end of Z is fixed with support slide rail (503) that the slope set up, support slide rail (503) slidable mounting has unsteady rocking seat (504), unsteady rocking seat (504) are installed driving cylinder (502), Z curved forming moulding-die (16) are connected to driving cylinder (502) other end, unsteady rocking seat (504) top is rotated and is installed on frame (1), unsteady rocking seat (504) lower part articulates there is unsteady hydro-cylinder (510).

2. The automotive air suspension Z-guide arm forming machine of claim 1, characterized in that: the Z-bend forming die (16) comprises a supporting seat plate (513), the rear end of the supporting seat plate (513) is fixed with a sliding rail and is hinged with a first driving oil cylinder (502), two parallel triangular mounting plates (515) are fixed at the front end of the supporting seat plate (513), a pressing block (501) is fixed between the two triangular mounting plates (515), and a pressing roller (512) is arranged at the front end of the pressing block (501) and is rotatably mounted at the front end corner of the two triangular mounting plates (515).

3. The automotive air suspension Z-guide arm forming machine of claim 1, characterized in that: the outer portion of the floating swing seat (504) is provided with a movable forming frame body (505), the upper end of the floating swing seat (504) is hinged to the movable forming frame body (505), the front side and the rear side of the movable forming frame body (505) are provided with adjusting slide rails (514) capable of sliding left and right on the rack (1), the other end of the floating oil cylinder (510) is hinged to the movable forming frame body (505), and the right end of the movable forming frame body (505) is provided with a left and right adjusting device installed on the rack (1).

4. The machine of claim 3, wherein: control adjusting device is including fixing turbine regulator (506) in frame (1), and turbine regulator (506) are connected with rotatory hand wheel (507), and the worm end of turbine regulator (506) is connected and is removed shaping support body (505), and floating oil cylinder (510) one side is fixed with adjusting nut (508), installs in adjusting nut (508) and adjusts spacing lead screw (509), and floating oil cylinder (510) front end is equipped with stopper (511) of fixing on frame (1).

5. The machine for forming an automotive air suspension Z-shaped guide arm according to any one of claims 1 to 4, characterized in that: the ear hole end upper bending assembly (2) comprises a driving oil cylinder II (202) installed on a rack (1), the driving oil cylinder II (202) is connected with a first adjusting seat (201), the lower end of the first adjusting seat (201) is fixedly provided with an ear hole end upper bending die (203), the ear hole end lower bending assembly (7) comprises a driving oil cylinder III (703) installed on the rack (1), the driving oil cylinder III (703) is connected with a second adjusting seat (701), the lower end of the second adjusting seat (701) is fixedly provided with an ear hole end lower bending die (702), guide rods (11) are fixedly arranged on the first adjusting seat (201) and the second adjusting seat (701), guide sleeves (12) are sleeved on the guide rods (11), the guide sleeves (12) are fixed on the rack (1), guide slide blocks I (13) are fixedly arranged on the outer sides of the first adjusting seat (201) and the second adjusting seat (701), and guide slide rails (14) for the guide slide blocks I (13) to slide up and down are arranged on the rack (1); the forming lower die assembly (6) comprises a third adjusting seat (601), a middle flat section supporting die (602) is installed at the top of one end of the third adjusting seat (601), a Z bending forming supporting die (603) is installed at the top of the other end of the third adjusting seat (601), the middle flat section pressing assembly (3) comprises a fourth driving oil cylinder (302) and a middle flat section pressing die (301) connected with the fourth driving oil cylinder, and the small Z bending forming assembly (4) comprises a fifth driving oil cylinder (402) fixed with the frame (1) and a small Z bending forming die (401) fixed with the fifth driving oil cylinder (402).

6. The automotive air suspension Z-guide arm forming machine of claim 1, characterized in that: the upper bending assembly (2) of the ear hole end, the lower bending assembly (7) of the ear hole end and the middle straight section pressing assembly (3) are provided with stroke control devices (9), each stroke control device (9) comprises a pair of supporting plates (905) fixed with the frame (1), an adjusting screw rod (904) and a guide slide rod (907) are installed between the two supporting plates (905) in a rotating mode, adjusting screw sleeves are arranged at two ends of the adjusting screw rod (904), two guide slide blocks (906) slidably mounted on the guide slide rods (907) are fixed on the adjusting screw sleeves, stroke switches (902) are fixed on the two guide slide blocks (906) at two ends, the upper bending assembly (2) of the ear hole end, the lower bending assembly (7) of the ear hole end and the middle straight section pressing assembly (3) are provided with driving arms (15).

7. The machine of claim 6 wherein: adjusting screw (904) is connected with adjusting hand wheel (901), two backup pads (905) fixedly connected with adjusting ruler (908), backup pad (905) outside is fixed with limiting rod (903), install length positioner (8) on adjusting seat two (701) of bending die (702) one side under the earhole end, length positioner (8) are including installing mounting panel (804) on adjusting seat two (701), mounting panel (804) top is fixed with extension board (803), extension board (803) are fixed with adjusting cylinder (805), adjusting cylinder (805) are connected with adjusting plate (802), the both sides rear end of adjusting plate (802) is fixed with guide post (806), the cover has direction support cover (801) on guide post (806), direction support cover (801) is fixed on extension board (803).

8. A method for forming an automobile air suspension Z-shaped guide arm is characterized by comprising the following steps: the method comprises the following steps: s1, placing the guide arm blank on a middle straight section supporting die (602) to prepare for press forming, wherein a Z-bending forming die (16) forms an included angle a with the horizontal plane, and the front end of the Z-bending forming die (16) is provided with a pressing roller (512) which can be flexibly rotated by the Z-bending forming die; s2, pressing the blank of the guide arm on the middle straight section supporting die (602) by the middle straight section pressing die (301); the ear hole end upper bending die (203) and the ear hole end lower bending die (702) complete the bending forming of the ear hole end of the guide arm and keep clamping; a Z-bend forming die (16) is pressed downwards in the direction of keeping an angle a; s3, when the Z-bending forming die (16) is pressed downwards and is subjected to excessive resistance, the Z-bending forming die (16) automatically swings by an angle b, then the Z-bending forming die (16) continues to be pressed downwards, and the angle of the Z-bending forming die (16) is gradually restored to a in the pressing process; s4, after the guide arm is bent, returning a Z-bend forming pressing die (16), a middle straight section pressing die (301), an ear hole end upper bending die (203) and an ear hole end lower bending die (702), and taking down the guide arm.

9. The method for forming an automotive air suspension Z-shaped guide arm as claimed in claim 8, wherein the method comprises the following steps: a pressing block (501) is arranged behind a pressing roller (512) of the Z-bending forming die (16), mutually vertical pressing surfaces are arranged at the bottom and the left side of the pressing block (501), the angle range of the step A in the step S1 is 50-65 degrees, the top of the middle straight section supporting die (602) forms a certain included angle with the horizontal plane, the included angle is 0-10 degrees, and the angle range of the step B in the step S3 is 4-5 degrees.

10. The method for forming an automotive air suspension Z-shaped guide arm as claimed in claim 8, wherein the method comprises the following steps: the forming method of the guide arm is completed by using the forming machine of the automotive air suspension Z-shaped guide arm as claimed in any one of claims 1-7.