CN111151592B - Error detection and adjustment method based on PCI-E pin punch forming equipment - Google Patents

Error detection and adjustment method based on PCI-E pin punch forming equipment Download PDF

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Publication number
CN111151592B
CN111151592B CN202010057455.2A CN202010057455A CN111151592B CN 111151592 B CN111151592 B CN 111151592B CN 202010057455 A CN202010057455 A CN 202010057455A CN 111151592 B CN111151592 B CN 111151592B
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die
punching
barb
female die
stamping
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CN111151592A (en
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李景曦
陈浩
尹晓欣
石卫卫
汪连芳
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Jiangmen Dehong Equipment Technology Co ltd
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Jiangmen Dehong Equipment Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire
    • B21F1/004—Bending wire other than coiling; Straightening wire by means of press-type tooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F11/00—Cutting wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F23/00—Feeding wire in wire-working machines or apparatus

Abstract

The invention relates to an error detection and adjustment method, in particular to an error detection and adjustment method based on PCI-E pin punch forming equipment, which comprises the following steps that a servo control feeding mechanism operates every time to enable the single-cycle stroke of the actual advance of a workpiece to be y', and the workpiece is sent to a machine vision detection mechanism from the first step of punching to undergo n strokes; the machine vision detection mechanism detects that the total travel deviation of the n times of travel of the workpiece is n (y' -y), and y is a single-cycle travel of theoretical advance; dividing the total travel deviation detected by the machine vision detection mechanism by n travels experienced in the whole process to obtain a single-period travel deviation; and feeding back the deviation value of the single-period stroke to the servo motor to adjust the period stroke. The method detects the total stroke of the machine vision detection pin which is punched in the first step and sent to the detection mechanism, amplifies the deviation value, more accurately adjusts the single-cycle stroke, improves the processing precision of the PCI-E pin and reduces the generation of unnecessary waste materials.

Description

Error detection and adjustment method based on PCI-E pin punch forming equipment
Technical Field
The invention belongs to the technical field of error detection and adjustment, and particularly relates to an error detection and adjustment method based on PCI-E pin punch forming equipment.
Background
In the process of inserting the PCI-E pin row into the notch of the plastic body, because the size of the pins is small, and adopts a mode of inverted hook or interference fit to prevent looseness, the position precision of each pin in the pin row in the production process is required to be high, the conventional production mode is to realize the continuity of the next process by cutting the pin row with unqualified position precision, relatively generates unnecessary waste materials, and the PCI-E pin can be deformed after punch forming, meanwhile, friction generated in the feeding process and abrasion caused by pressure feeding deformation can cause errors in the position precision of each pin in the pin row in the production process, generally, the detection is carried out in the next step after one-step stamping, the errors are adjusted after the detection is finished, however, the determined values have difference in precision, and the adjustment of the workpiece position precision obtained by the error precision detected in the prior art still does not meet the requirement of the PCI-E pin position precision.
Disclosure of Invention
The problem that in the prior art, the position accuracy of the pin is not qualified due to the fact that the pin is not accurately adjusted due to errors generated in the production process is solved.
The invention is realized by the following technical scheme:
an error detection and adjustment method based on PCI-E pin punch forming equipment comprises the following steps:
1) the servo control feeding mechanism controls the workpiece to be conveyed from the first step of stamping to the machine vision detection mechanism, the single-cycle stroke of each actual advancing of the workpiece is y ', the workpiece is conveyed from the first step of stamping to the machine vision detection mechanism to undergo n times of single-cycle strokes which are y', wherein n is an integer;
2) the machine vision detection mechanism detects that the deviation amount of the total stroke of the workpiece from the first-step stamping to the workpiece conveying to the machine vision detection mechanism is n (y' -y), wherein y represents the single-cycle stroke of theoretical advance of the workpiece each time controlled by the servo motor;
3) dividing the total travel deviation detected by the machine vision detection mechanism by n travels experienced in the whole process to obtain a single-period travel deviation delta; feeding back the deviation delta of the single-period stroke to the servo motor to obtain the single-period stroke y adjusted by the servo motor1；
After the servo motor receives the feedback of the single-cycle stroke deviation delta in the step 3), obtaining a single-cycle step number adjustment amount b; the single-cycle step number adjustment b = delta/(y/(pi d)0i) Δ = y' -y, the step number of the required walking single cycle is a, and the step number of the adjusted servo motor single cycle is a-b; adjusted monocycle stroke y1=（a-b）πd0ic；
Wherein d is0Indicating the diameter of the power wheel; i tableDisplaying a reduction ratio of the gearbox; c represents the accuracy of the servo motor in circles/steps.
According to the error detection and adjustment method based on the PCI-E pin punch forming equipment, the required rotation angle is theta0And if the required walking single-cycle step number is a, then:
θ0=（y/（πd0i））×360；
a=(θ0/360)/c=（y/（πd0i））/c。
according to the error detection and adjustment method based on the PCI-E pin punch forming equipment, one side of the servo control feeding mechanism is provided with the punching mechanism for receiving the workpiece and punch forming the workpiece, and the other side of the punching mechanism is provided with the machine vision detection mechanism for measuring the error of the punched workpiece.
The error detection and adjustment method based on the PCI-E pin punch forming equipment, the stamping mechanism comprises a stamping mechanism bracket, a female die base is arranged on the stamping mechanism bracket, a die bottom plate for pressing the die is arranged above the female die base, a die bottom plate for mounting the die is arranged above the die bottom plate, a feeding guide block for receiving and guiding workpieces is arranged on the female die base, a left inverted hook blanking station, a right inverted hook blanking station, a flat outline blanking station and a punching and bending station are sequentially arranged on one side of the feeding guide block along the feeding direction, the other side of the punching and bending station is provided with a discharging guide block which is positioned on the female die base and used for discharging and guiding the workpieces formed by punching, the servo control feeding mechanism operates for a single period every time, and the left barb blanking station, the right barb blanking station, the outline flattening blanking station and the punching and bending station synchronously complete one-time punching.
According to the error detection and adjustment method based on the PCI-E pin punch forming equipment, the female die base is provided with the plurality of guide pillars, the guide pillars sequentially penetrate through the die base plate and the die base plate, springs for resetting the die are arranged between the female die base and the die base plate and between the die base plate and the die base plate, the springs are sleeved on the guide pillars, the upper ends of the guide pillars are connected with the upper beam, and the air cylinder for providing punching force is arranged above the upper beam.
According to the error detection and adjustment method based on the PCI-E pin punch forming equipment, the servo control feeding mechanism comprises a feeding frame for conveying workpieces, a pressing wheel arranged at the upper end of the feeding frame for pressing and conveying the workpieces, a power wheel arranged at the lower end of the feeding frame and matched with the pressing wheel for conveying the workpieces, and a servo motor connected with the power wheel and controlling the power wheel to rotate.
According to the error detection and adjustment method based on the PCI-E pin punch forming equipment, the left barb blanking station comprises a left barb female die which is arranged on a female die base and is close to a feeding guide block, a left barb pressing block is arranged on the left barb female die, the left barb female die and the left barb pressing block are positioned between the female die base and a pressing die bottom plate, and a left barb punch knife which is connected to a punching die bottom plate and penetrates through the pressing die bottom plate, the left barb pressing block and the left barb female die is arranged above the left barb pressing block; the right barb blanking station comprises a right barb female die which is arranged on the female die base and is close to the left barb female die, a right barb pressing block is arranged on the right barb female die, the right barb female die and the right barb pressing block are positioned between the female die base and the pressing die bottom plate, and a right barb punching knife which is connected to the punching die bottom plate and penetrates through the pressing die bottom plate, the right barb pressing block and the right barb female die is arranged above the right barb pressing block; the flattening profile blanking station comprises a stamping female die which is arranged on one side of a female die base close to the right inverted hook female die, a stamping pressing block is arranged on the stamping female die, the stamping female die and the stamping pressing block are positioned between the female die base and a pressing die bottom plate, and a stamping knife which is connected to the stamping die bottom plate and penetrates through the pressing die bottom plate, the stamping pressing block and the stamping female die is arranged on the stamping pressing block; the punching and bending station comprises a punching and bending lower die which is arranged on the die base and close to one side of the punching and forming die, and a punching and bending knife which is connected to the die bottom plate and penetrates through the die bottom plate is arranged above the punching and bending lower die.
Compared with the prior art, the invention has the following advantages:
1. the invention provides an error detection and adjustment method based on PCI-E pin punch forming equipment, which detects the total travel deviation accumulated by n travels from the first step of punching to the completion of punching of a PCI-E pin workpiece through a machine vision detection mechanism, thereby amplifying an error value, and the amplified error value meets the minimum error detection requirement of the machine vision detection mechanism on the PCI-E pin workpiece, so that the detection of the vision detection mechanism is more accurate. And the obtained single-period stroke deviation value is fed back to the servo motor through calculation, so that the position precision requirement of the PCI-E pin in the production process is met.
2. According to the error detection and adjustment method based on the PCI-E pin punch forming equipment, the upper and lower compression dies of the punching and hooking station adopt a combined die mode, so that a workpiece can be machined in a simple machining mode without adopting a drilling and linear cutting machining mode, the roughness of the surface of the workpiece is guaranteed, the manufacturing precision is high, and the machining cost is reduced.
3. According to the error detection and adjustment method based on the PCI-E pin punch forming equipment, the feeding process adopts a friction mode for feeding, the rubber coating process is adopted, the rubber coating pressing wheel and the rubber coating power wheel are matched for feeding, the friction force is adjusted through the pressure regulation of the air cylinder, and the condition that a workpiece is not crushed while the friction force is increased can be ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is an exploded view of the stamping mechanism of the present invention;
FIG. 3 is a perspective view of a servo-controlled feed mechanism of the present invention;
fig. 4 is a perspective view of the machine vision inspection mechanism of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
When embodiments of the present invention refer to the ordinal numbers "first", "second", etc., it should be understood that the words are used for distinguishing between them unless the context clearly dictates otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 4, the error detection and adjustment method based on the PCI-E pin stamping forming equipment includes the following steps:
1) the servo control feeding mechanism 1 controls the workpiece to be conveyed from the first step of stamping to the machine vision detection mechanism 3, the single-cycle stroke of each actual advancing of the workpiece is y ', the workpiece is conveyed from the first step of stamping to the machine vision detection mechanism 3 to undergo n times of single-cycle strokes which are y', wherein n is an integer;
2) the machine vision detection mechanism 3 detects that the deviation amount of the total stroke of the workpiece from the first step punching to the workpiece feeding to the machine vision detection mechanism 3 is n (y' -y), wherein y represents the single-cycle stroke of each theoretical advance of the workpiece controlled by the servo motor 32;
3) dividing the total travel deviation detected by the machine vision detection mechanism 3 by n travels experienced in the whole process to obtain a single-period travel deviation delta; the deviation value Delta of the single-period stroke is fed back to the servo motor 32 to obtain the single-period stroke y adjusted by the servo motor 321；
The single-period stroke deviation is fed back to the servo motor 32, and the servo motor 32 adjusts the single-period step number through the single-period stroke deviation obtained through feedback, so as to adjust the single-period stroke of the servo motor 32. The method comprises the steps of detecting an amplified total stroke deviation amount of a PCI-E pin workpiece sent from first-step stamping to a machine vision detection mechanism through the machine vision detection mechanism, dividing the amplified stroke deviation amount by n strokes to obtain a single-cycle stroke deviation amount, feeding the single-cycle stroke deviation amount back to a servo control feeding mechanism, and accurately adjusting the single-cycle stroke of a motor by adjusting the number of steps of the motor, wherein when the detection value is 0.1mm, and assuming that the number of feeding steps n is 100, the adjustment value of the servo motor is 0.001mm after an error is amplified, so that the position accuracy of the PCI-E pin workpiece in the production process is improved.
Further, based on the error detection and adjustment method of the PCI-E pin punch forming equipment, the servo motor 32 controls the workpiece to theoretically advance for a single-cycle travel y each time, and the required rotation angle is theta0The number of steps of a required walking single cycle is a;
θ0=（y/（πd0i））×360；
a=(θ0/360)/c=（y/（πd0i））/c；
wherein d is0The diameter of the power wheel 31; i represents a gearbox reduction ratio; c represents the accuracy of the servo motor 32 in circles/steps.
Still further, after the servo motor 32 receives the feedback of the single-cycle stroke deviation value Δ in the step 3), a single-cycle step number adjustment value b is obtained; the single-cycle step number adjustment b = delta/(y/(pi d)0i) Δ = y' -y), the number of single-cycle steps of the servo motor 32 after adjustment is a-b; from (o)1=（y1/（πd0i））×360；②θ1=360 (a-b) c, and obtaining adjusted one-cycle stroke y1=（a-b）πd0ic. Measuring the total stroke deviation value by a machine vision detection mechanism, further calculating a monocycle deviation value delta, obtaining the regulated monocycle step number a-b through the delta, and finally calculating the regulated monocycle stroke y1Finishing the accurate trimming of the position of the workpiece.
Specifically, a stamping mechanism 2 for receiving a workpiece and performing stamping forming on the workpiece is arranged on one side of the servo control feeding mechanism 1, and a machine vision detection mechanism 3 for performing error measurement on the stamped workpiece is arranged on the other side of the stamping mechanism 2. The PCI-E pin workpiece is controlled and conveyed by the servo control feeding mechanism 1, the stamping mechanism 2 receives a workpiece incoming material and carries out stamping forming again, finally the workpiece incoming material is conveyed to the machine vision detection mechanism 3 for error detection, and the detected total travel deviation value of the workpiece conveyed to the machine vision detection mechanism 3 from the first stamping is fed back to the servo control feeding mechanism 1 for adjustment.
More specifically, the stamping mechanism 2 includes a stamping mechanism bracket 4, a female die base 5 is arranged on the stamping mechanism bracket 4, a die base plate 6 for a stamping die is arranged above the female die base 5, a die base plate 7 for mounting a stamping die is arranged above the die base plate 6, a feeding guide block 8 for receiving and guiding a workpiece is arranged on the female die base 5, a left inverted hook blanking station 9, a right inverted hook blanking station 10, a flat outline blanking station 11 and a bending station 12 are sequentially arranged on one side of the feeding guide block 8 along a feeding direction, and a discharging guide block 13 for discharging and guiding the stamped workpiece is arranged on the female die base 5 on the other side of the bending station 12. The feeding guide block 8 receives a workpiece and then sequentially conveys the workpiece to a left and right barb punching station, a profile flattening punching station and a bending station to complete mold filling, and then conveys the workpiece to a discharging guide block to be guided to a detection mechanism for detection.
Further, a plurality of guide posts 25 are arranged on the female die base 5, the guide posts 25 sequentially penetrate through the die base plate 6 and the die base plate 7, springs 26 for resetting the die are arranged between the female die base 5 and the die base plate 6 and between the die base plate 6 and the die base plate 7, the springs 26 are sleeved on the guide posts 25, the upper ends of the guide posts 25 are connected with upper beams 27, and cylinders 28 for providing punching force are arranged above the upper beams 27. The guide post 25 guides the undercut pressing block and the undercut female die, the punching type pressing block 20 and the punching type female die 16, the punching bending knife 24 and the punching bending lower die 17 to be involuted at the correct position, and the spring 26 is arranged on the guide post, so that the die can reset after punching is finished, and simultaneously, the punching force in the punching process can be reduced, and the buffering effect is achieved.
Still further, the servo control feeding mechanism 1 comprises a feeding frame 29 for conveying workpieces, a pressing wheel 30 arranged at the upper end of the feeding frame 29 for pressing and conveying the workpieces, a power wheel 31 arranged at the lower end of the feeding frame 29 and matched with the pressing wheel 30 for conveying the workpieces, and a servo motor 32 connected with the power wheel 31 and controlling the rotation of the power wheel 31. The servo feeding mechanism 1 adopts a rubber coating wheel friction mode to feed materials, and the friction force is adjusted through air cylinder pressure regulation, so that the smooth feeding of workpieces can be guaranteed while the raw material copper foil is not crushed.
Specifically, the machine vision inspection mechanism 3 includes a camera support 33 and an inspection camera 34 disposed on the camera support 33 for detecting a deviation value of a position of the workpiece before and after stamping and feeding the deviation value back to the servo motor 32 for precise adjustment. And a CCD camera is adopted for detection and is arranged at the position of a workpiece outlet to obtain a more accurate deviation value, the deviation value is fed back to a servo motor, the single-cycle stroke of the motor is adjusted, and after each trimming, the subsequent pins can be accurately processed.
More specifically, the left barb blanking station 9 comprises a left barb female die 4 which is arranged on a female die base 5 and is close to a feeding guide block 8, a left barb pressing block 18 is arranged on the left barb female die 14, the left barb female die 14 and the left barb pressing block 18 are positioned between the female die base 5 and a pressing die bottom plate 6, and a left barb punch 21 which is connected to a die bottom plate 7 and penetrates through the pressing die bottom plate 6, the left barb pressing block 18 and the left barb female die 14 is arranged above the left barb pressing block 18; the right barb blanking station 10 comprises a right barb female die 15 which is arranged on a female die base 5 and is close to a left barb female die 14, a right barb pressing block 19 is arranged on the right barb female die 15, the right barb female die 15 and the right barb pressing block 19 are positioned between the female die base 5 and a pressing die bottom plate 6, and a right barb punching knife 22 which is connected to the die bottom plate 7 and penetrates through the pressing die bottom plate 6, the right barb pressing block 19 and the right barb female die 15 is arranged above the right barb pressing block 19; the flattening outline blanking station 11 comprises a punching female die 16 which is arranged on one side, close to the right undercut female die 15, of the female die base 5, a punching press block 20 is arranged on the punching female die 16, the punching female die 16 and the punching press block 20 are located between the female die base 5 and the pressing die bottom plate 6, and a punching knife 23 which is connected to the punching die bottom plate 7 and penetrates through the pressing die bottom plate 6, the punching press block 20 and the punching female die 16 is arranged on the punching press block 20; the punching and bending station 12 comprises a punching and bending lower die 17 which is arranged on one side, close to the punching and forming female die 16, of the female die base 5, and a punching and bending knife 24 which is connected to the die bottom plate 7 and penetrates through the die bottom plate 6 is arranged above the punching and bending lower die 17.
The invention providesAn error detection and adjustment method based on PCI-E pin punch forming equipment is provided, and the position to be processed on the copper foil is assumed to be x (x)0，x1，x2…），x0To a blanking left side barb station, after the motor stops rotating and braking, the cylinder of the pin punching mechanism works, and x0And left side barbs are punched.
The motor is operated again, the copper foil is conveyed forward, and when the motor is operated n1One period of n strokes1*y，x0Is conveyed to a blanking right side barb station, x (n)1) When the processing station is sent to the blanking left side barb station, and the motor stops rotating and brakes, x0，x（n1) And simultaneously, processing the workpiece, wherein the corresponding processed conditions are as follows: x is the number of0Left side barbs and right side barbs; x (n)1): and (4) chamfering at the left side. The rest x1To x (n)1-1) left side barbs have been machined.
Motor continues to run n2One period of n strokes2*y，x0Is conveyed to a blanking and profile flattening station, x (n)1+（n2-n1) I.e. x (n)2) The station to be processed is sent to the station for blanking right side barb, x (n)2+n1) When the processing station is sent to the blanking left side barb station, and the motor stops rotating and brakes, x0，x（n2），x（n2+n1) And simultaneously, processing the workpiece, wherein the corresponding processed conditions are as follows: x0, left side barbs, right side barbs, flattened profile; x (n)2): left side barbs and right side barbs; x (n)2+n1): and (4) chamfering at the left side. The remaining x1 to x (n)2+ 1) the left side barbs and the right side barbs are processed; the rest x (n)2+n1+1 to x (n)2-1) left side barbs have been machined.
Motor continues to run n3One period of n strokes3*y，x0Is conveyed to a punching and bending station; x (n)2+（n3-n2) I.e. x (n)3) The station to be processed is sent to a blanking and flattening profile station; x (n)2+n1+（n3-n1) I.e. x (n)3+n2) The station to be processed is sent to a blanking right side barb station; x (n 2+ n1+ n 3) is ready to be processed and sent to the blanking left side barb station. After the motor stops rotating and braking, x0，x（n3），x（n3+n2），x（n3+n2+n1) And simultaneously, processing the workpiece, wherein the corresponding processed conditions are as follows: x0, left side barbs, right side barbs, contour flattening and impact bending; x (n)3): left side barbs, right side barbs and a flattened profile; x (n)3+n2): left side barbs and right side barbs; x (n)3+n2+n1): and (4) chamfering at the left side. The remaining x1 to x (n)3+ 1) left side barbs, right side barbs, flattened profile have been machined; the rest x (n)3+n2+1 to x (n)3-1) left and right side barbs have been machined; the rest x (n)3+n2+n1+1 to x (n)3+n2-1) left side barbs have been machined.
Motor continues to run n4One period of n strokes4*y，x0Is conveyed to a detection station; x (n)3+（n4-n3) I.e. x (n)4) The station to be processed is sent to a punching and bending station; x (n)3+n2+（n4-n2) I.e. x (n)4+n3) The station to be processed is sent to a blanking and flattening profile station; x (n)3+n2+n1+（n4-n1) To-be-processed stations, i.e. x (n)4+n3+n2) The station to be processed is sent to a blanking right side barb station; x (n)4+n3+n2+n1) And the station to be processed is sent to a blanking left side barb station. After the motor stops rotating and braking, x0Is detected, x (n)4），x（n4+n3），x（n4+n3+n2），x（n4+n3+n2+n1) Simultaneously, the workpiece is processed, and the corresponding processed and detected conditions are as follows: x is the number of0Left side barbs, right side barbs, contour flattening, impact bending and detection; x (n)4): left side barb, right side barb and flatteningProfile and impact bending; x (n)4+n3): left side barbs, right side barbs and a flattened profile; x (n)4+n3+n2): right side barbs and left side barbs; x (n)4+n3+n2+n1): and (4) chamfering at the left side. The remaining x1 to x (n)4+ 1) left side barbs, right side barbs, flattened profile, impact bend have been machined; the rest x (n)4+n3+1 to x (n)4-1) left side barbs, right side barbs, flattened profile have been machined; the rest x (n)4+n3+n2+1 to x (n)4+n3-1) left and right side barbs have been machined; the rest x (n)4+n3+n2+n1+1 to x (n)4+n3+n2-1) left side barbs, right side barbs have been machined.
And between each station, the theoretical running stroke of the motor is an integral multiple of y. From the first station, the blanking left side barb station, to the workpiece, the workpiece is sent to a machine vision detection mechanism, and the processed position x, PCI-E pin is subjected to n (n = n)1+n2+n3+n4) And (4) a secondary stroke.
The invention provides a PCI-E pin punch forming device based on machine vision adjustment, which detects the total travel deviation accumulated by n travels from the first step of punching to the completion of punching of a PCI-E pin workpiece through a machine vision detection mechanism, thereby amplifying an error value, and the amplified error value meets the minimum error detection requirement of the machine vision detection mechanism on the PCI-E pin workpiece, so that the detection of the vision detection mechanism is more accurate. And the obtained single-period stroke deviation value is fed back to the servo motor through calculation, so that the position precision requirement of the PCI-E pin in the production process is met, and the generation of unnecessary waste materials is reduced.
The foregoing is illustrative of one embodiment provided in connection with the detailed description and is not intended to limit the invention to the specific embodiment described. Similar or identical methods, structures and the like as those of the present invention or several technical deductions or substitutions made on the premise of the conception of the present invention should be considered as the protection scope of the present invention.

Claims (8)

1. An error detection and adjustment method based on PCI-E pin punch forming equipment is characterized in that: the method comprises the following steps:
the servo control feeding mechanism (1) controls the workpiece to be conveyed from the first step of stamping to the machine vision detection mechanism (3), the single-cycle stroke of each actual advancing of the workpiece is y ', the workpiece is conveyed from the first step of stamping to the machine vision detection mechanism (3) and goes through n times of single-cycle strokes which are y', wherein n is an integer;
the machine vision detection mechanism (3) detects that the deviation amount of the total stroke of the workpiece from the first step stamping to the workpiece feeding to the machine vision detection mechanism (3) is n (y' -y), wherein y represents the single-cycle stroke of theoretical advance of the workpiece each time controlled by the servo motor (32);
dividing the total travel deviation detected by the machine vision detection mechanism (3) by n travels experienced in the whole process to obtain a single-period travel deviation delta; the deviation value delta of the single-period stroke is fed back to the servo motor (32) to obtain the single-period stroke y adjusted by the servo motor (32)1；
After the servo motor (32) in the step 3) receives the feedback of the single-period stroke deviation value delta, obtaining a single-period step number adjustment value b; the single-cycle step number adjustment b = delta/(y/(pi d)0i) Δ = y' -y, the step number of the required walking single cycle is a, and the step number of the adjusted single cycle of the servo motor (32) is a-b; adjusted monocycle stroke y1=（a-b）πd0ic；
Wherein d is0Represents the diameter of the power wheel (31); i represents a gearbox reduction ratio; c represents the accuracy of the servo motor (32) in circles/steps.
2. The error detection and adjustment method based on the PCI-E pin punch forming equipment according to claim 1, characterized in that: the angle of rotation required is theta0And if the required walking single-cycle step number is a, then:
θ0=（y/（πd0i））×360；
a=(θ0/360)/c=（y/（πd0i））/c。
3. the error detection and adjustment method based on the PCI-E pin punch forming equipment according to claim 1, characterized in that: one side of the servo control feeding mechanism (1) is provided with a stamping mechanism (2) for bearing a workpiece and performing stamping forming on the workpiece, and the other side of the stamping mechanism (2) is provided with a machine vision detection mechanism (3) for performing error measurement on the stamped workpiece.
4. The error detection and adjustment method based on the PCI-E pin punch forming equipment as claimed in claim 3, wherein: the punching mechanism (2) comprises a punching mechanism bracket (4), a female die base (5) is arranged on the punching mechanism bracket (4), a pressing die bottom plate (6) for pressing a die is arranged above the female die base (5), a die bottom plate (7) for mounting a die is arranged above the pressing die bottom plate (6), a feeding guide block (8) for bearing and guiding a workpiece is arranged on the female die base (5), a left inverted hook punching station (9), a right inverted hook punching station (10), a flat outline punching station (11) and a punching and bending station (12) are sequentially arranged on one side of the feeding guide block (8) along the feeding direction, a discharging guide block (13) for discharging and guiding the punched workpiece is arranged on the female die base (5) on the other side of the punching and bending station (12), and every single operation period of the servo control feeding mechanism (1) is realized, the left inverted hook punching station (9) and the left inverted hook punching station (9) are arranged, The right barb blanking station (10), the outline flattening blanking station (11) and the punching and bending station (12) synchronously complete one-time punching.
5. The error detection and adjustment method based on the PCI-E pin punch forming equipment is characterized in that: the die is characterized in that a plurality of guide pillars (25) are arranged on the die base (5), the guide pillars (25) sequentially penetrate through the die base plate (6) and the die base plate (7), springs (26) for resetting the die are arranged between the die base (5) and the die base plate (6) and between the die base plate (6) and the die base plate (7), the springs (26) are sleeved on the guide pillars (25), the upper ends of the guide pillars (25) are connected with upper beams (27), and cylinders (28) for providing stamping force are arranged above the upper beams (27).
6. The error detection and adjustment method based on the PCI-E pin punch forming equipment, according to claim 5, is characterized in that: the servo control feeding mechanism (1) comprises a feeding frame (29) for conveying workpieces, a pressing wheel (30) arranged at the upper end of the feeding frame (29) for pressing and conveying the workpieces, a power wheel (31) arranged at the lower end of the feeding frame (29) and matched with the pressing wheel (30) for conveying the workpieces, and a servo motor (32) connected with the power wheel (31) and controlling the power wheel (31) to rotate.
7. The error detection and adjustment method based on the PCI-E pin punch forming equipment as claimed in claim 6, wherein: the machine vision detection mechanism (3) comprises a camera support (33) and a detection camera (34) which is arranged on the camera support (33) and used for detecting the total travel deviation amount from the first-step stamping of the workpiece to the feeding of the workpiece to the machine vision detection mechanism (3) and feeding the total travel deviation amount back to the servo motor (32) for adjustment.
8. The error detection and adjustment method based on the PCI-E pin punch forming equipment is characterized in that: the left barb blanking station (9) comprises a left barb female die (14) which is arranged on a female die base (5) and is close to a feeding guide block (8), a left barb pressing block (18) is arranged on the left barb female die (14), the left barb female die (14) and the left barb pressing block (18) are positioned between the female die base (5) and a pressing die bottom plate (6), and a left barb punch (21) which is connected to the die bottom plate (7) and penetrates through the pressing die bottom plate (6), the left barb pressing block (18) and the left barb female die (14) is arranged above the left barb pressing block (18); the right barb blanking station (10) comprises a right barb female die (15) which is arranged on the female die base (5) and is close to the left barb female die (14), a right barb pressing block (19) is arranged on the right barb female die (15), the right barb female die (15) and the right barb pressing block (19) are positioned between the female die base (5) and the pressing die bottom plate (6), and a right barb punch (22) which is connected to the die bottom plate (7) and penetrates through the pressing die bottom plate (6), the right barb pressing block (19) and the right barb female die (15) is arranged above the right barb pressing block (19); the flattening profile blanking station (11) comprises a stamping female die (16) which is arranged on one side, close to the right inverted-hook female die (15), of the female die base (5), a stamping pressing block (20) is arranged on the stamping female die (16), the stamping female die (16) and the stamping pressing block (20) are located between the female die base (5) and the pressing die bottom plate (6), and a stamping knife (23) which is connected to the stamping die bottom plate (7) and penetrates through the pressing die bottom plate (6), the stamping pressing block (20) and the stamping female die (16) is arranged on the stamping pressing block (20); the punching and bending station (12) comprises a punching and bending lower die (17) which is arranged on the die base (5) and is close to one side of the punching and forming die (16), and a punching and bending knife (24) which is connected to the die bottom plate (7) and penetrates through the die bottom plate (6) is arranged above the punching and bending lower die (17).
CN202010057455.2A 2020-01-19 2020-01-19 Error detection and adjustment method based on PCI-E pin punch forming equipment Active CN111151592B (en)

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JP5967031B2 (en) * 2013-07-31 2016-08-10 Ｊｆｅスチール株式会社 Method and apparatus for correcting the perpendicularity of H-shaped steel flange
CN103706700B (en) * 2013-12-23 2016-02-10 苏思妮 With the stamping machine of vision-based detection
CN206083709U (en) * 2016-10-18 2017-04-12 佰力电子（东莞）有限公司 Pin stamping die
CN106670287A (en) * 2016-12-23 2017-05-17 信宜华宇电子科技有限公司 Punching device for strip-shaped material strip

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Denomination of invention: An Error Detection and Adjustment Method Based on PCI-E Pin Stamping Equipment

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