CN114029393B - Production mold for automobile exhaust pipe partition plate - Google Patents
Production mold for automobile exhaust pipe partition plate Download PDFInfo
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- CN114029393B CN114029393B CN202111172851.0A CN202111172851A CN114029393B CN 114029393 B CN114029393 B CN 114029393B CN 202111172851 A CN202111172851 A CN 202111172851A CN 114029393 B CN114029393 B CN 114029393B
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- exhaust pipe
- hydraulic cylinder
- pipe partition
- pressing
- control unit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/34—Perforating tools; Die holders
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Exhaust Silencers (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention relates to a production die for an automobile exhaust pipe partition plate, belongs to the field of automobile production, and particularly relates to a production device for the automobile exhaust pipe partition plate, which comprises a supporting unit for supporting the production die, the exhaust pipe partition plate is fixed by an electric telescopic push rod in the fixing unit, the exhaust pipe partition plate is subjected to die pressing operation by a hydraulic cylinder on the die pressing unit, when in use, the electric telescopic push rod can be pulled transversely inwards to drive the anti-skid pad to fix the clapboard, when the exhaust pipe clapboard is subjected to die pressing, the pressing block arranged on the hydraulic rod of the hydraulic cylinder is used for carrying out hole pressing operation on the exhaust pipe clapboard, the fixing unit and the pressing die unit are matched for use to achieve the purpose of pressing holes on the exhaust pipe partition plate, and the pressing pressure of the hydraulic cylinder in the die is adjusted through the stress and the thickness of the exhaust pipe baffle, the use efficiency of the production die and the product percent of pass of the exhaust pipe partition plate after hole pressing are improved.
Description
Technical Field
The invention relates to the technical field of automobile production, in particular to a production die for an automobile exhaust pipe partition plate.
Background
Since the 20 th century, the annual output of the world automobiles is measured by thousands of automobiles, tens of thousands of automobiles, then by tens of millions of automobiles, and about 4249 thousands of automobiles have been achieved in 1978, the development of the world automobile industry is approximately in 4 stages, and the production device is used for producing and polishing the automobile exhaust pipe partition plate, so that the partition plate can be smoothly used.
However, in the process of punching the partition plate, the existing production device for the exhaust pipe partition plate often has the phenomenon that the pressing pressure is inaccurate, so that secondary reworking or scrapping is needed, and therefore improvement is needed.
In conclusion, the prior art still lacks a production mould that can adjust the pressure of pushing down of pneumatic cylinder in the mould according to blast pipe baffle stress and thickness, is difficult to improve the problem of the qualification rate in pressure hole of blast pipe baffle.
Disclosure of Invention
Therefore, the invention provides a production mold for an automobile exhaust pipe partition plate, which is used for overcoming the problem that the yield of a pressed hole of the exhaust pipe partition plate is difficult to improve because the production mold capable of adjusting the pressing pressure of a hydraulic cylinder in the mold according to the stress and the thickness of the exhaust pipe partition plate is still lacked in the prior art.
In order to achieve the above objects, the present invention provides a mold for producing a partition board of an automobile exhaust pipe, comprising,
the supporting unit comprises a supporting frame and a supporting rod, and the supporting frame and the supporting rod are used for supporting the production mold;
the fixing unit is arranged above the supporting unit and comprises a bottom plate, a workbench is arranged above the bottom plate, electric telescopic push rods are arranged on two sides of the workbench, anti-slip pads are fixedly arranged on the outer walls of the electric telescopic push rods, the electric telescopic push rods are used for fixing the exhaust pipe partition plate, a stress detector is arranged on the bottom plate and used for detecting the stress of the exhaust pipe partition plate, and an ultrasonic thickness gauge is arranged on the bottom plate and used for detecting the thickness of the exhaust pipe partition plate;
the die pressing unit is arranged above the fixing unit and comprises an electric lifting sleeve rod arranged on the bottom plate, a connecting plate is fixedly arranged at the top of the electric lifting sleeve rod, a hydraulic cylinder is arranged on the connecting plate, a protective shell is arranged outside the hydraulic cylinder, and a pressing block is fixedly arranged at the bottom end of an output shaft of the hydraulic cylinder and used for pressing a hole of the exhaust pipe partition plate;
the image detection unit is arranged below the connecting plate, comprises an image detector arranged above a to-be-punched hole part of the exhaust pipe clapboard and is used for detecting the punching condition of the exhaust pipe clapboard;
the central control unit is respectively connected with the fixing unit, the pressing die unit and the image detection unit and is used for adjusting the operation parameters of all units according to the parameters of the exhaust pipe partition plate;
before the hole pressing operation of the die pressing unit is carried out, the central control unit determines the pressure when the hydraulic cylinder of the die pressing unit is pressed down according to the stress value of the exhaust pipe partition plate detected by the received stress detector, when the detected stress value of the exhaust pipe partition plate is within the preset stress value range of the exhaust pipe partition plate, the central control unit determines that the pressing pressure of the hydraulic cylinder is the preset pressure of the hydraulic cylinder, and if the detected stress value of the exhaust pipe partition plate is not within the preset stress value range of the exhaust pipe partition plate, the central control unit determines the increased pressure of the hydraulic cylinder according to the difference value between the preset stress value of the exhaust pipe partition plate and the detected stress value of the exhaust pipe partition plate;
after the pressing pressure of the hydraulic cylinder is determined, the central control unit adjusts the determined pressing pressure of the hydraulic cylinder according to the difference value between the thickness of the exhaust pipe partition plate detected by the received ultrasonic thickness gauge and the preset thickness of the exhaust pipe partition plate, if the thickness difference value is within a preset range, the pressing pressure of the hydraulic cylinder is not adjusted, and if the thickness difference value is not within the preset range, the pressing pressure of the hydraulic cylinder is adjusted differently according to different ranges of the thickness difference value;
when the pressing die unit performs hole pressing operation on the exhaust pipe partition plate according to the adjusted pressing pressure of the hydraulic cylinder, the central control unit receives a difference value between the hole diameter of the upper pressing hole of the exhaust pipe partition plate detected by the image detection unit and the preset hole diameter of the exhaust pipe partition plate to judge whether the pressing hole of the exhaust pipe partition plate is qualified or not, if the pressing hole is judged to be qualified or unqualified, hole pressing operation of the next exhaust pipe partition plate is performed, if the pressing hole is judged to be secondarily pressed, the central control unit determines the pressure of secondary pressing according to a difference value between the secondary stress value of the exhaust pipe partition plate detected by the stress detector and the stress value of the exhaust pipe partition plate detected for the first time, and after the pressing die unit performs secondary pressing hole pressing on the exhaust pipe partition plate, the central control unit performs secondary judgment on the pressing hole of the exhaust pipe partition plate pressed for the second time.
Further, the central control unit determines the pressure when the hydraulic cylinder of the die pressing unit is pressed down by receiving the stress value of the exhaust pipe separator detected by the stress detector arranged on the bottom plate,
setting the detected stress value of the exhaust pipe partition plate as Gs, setting the preset stress value of the exhaust pipe partition plate as G0, setting the preset pressure of the hydraulic cylinder as N0, setting the maximum pressure of the hydraulic cylinder as Nmax, and setting Nmax > 1.5 XN 0,
if Gs is less than or equal to G0, the central control unit determines that the pressing pressure of the hydraulic cylinder is N1, and N1 is N0;
if Gs > G0, the central control unit determines the pressing pressure N1 of the hydraulic cylinder, and N1 is N0+ Nj.
Further, when the central control unit increases the pressing pressure of the hydraulic cylinder, the central control unit determines the increased pressure of the hydraulic cylinder according to the difference value between the preset stress value of the exhaust pipe partition plate and the detected stress value of the exhaust pipe partition plate, sets the increased pressure of the hydraulic cylinder to be Nj,
if the Gs-G0 is more than 0 and less than or equal to 0.1 XG 0, the central control unit determines that the pressure Nj of the added hydraulic cylinder is 0.1 XN 0;
if the pressure Nj of the hydraulic cylinder is more than 0.1 XG 0 and less than or equal to Gs 0 and less than or equal to 0.2 XG 0, the central control unit determines that the pressure Nj of the increased hydraulic cylinder is 0.3 XN 0;
if the pressure Nj of the hydraulic cylinder is more than 0.2 XG 0 and less than or equal to Gs 0 and less than or equal to 0.3 XG 0, the central control unit determines that the pressure Nj of the increased hydraulic cylinder is 0.5 XN 0;
if Gs-G0 is greater than 0.3 XG 0, the central control unit determines that the increased pressure Nj of the hydraulic cylinder is Nmax-N0.
Further, an ultrasonic thickness gauge provided on the base plate detects the thickness of the exhaust pipe partition and transmits the detection data to the central control unit, the central control unit compares the detected thickness of the exhaust pipe partition with a preset thickness of the exhaust pipe partition, adjusts the determined pressing pressure of the hydraulic cylinder, sets the detected thickness of the exhaust pipe partition to be Hs, sets the preset thickness of the exhaust pipe partition to be H0, sets the adjustment coefficient of the hydraulic cylinder to be alpha,
if Hs is less than or equal to H0, the central control unit adjusts the pressing pressure of the hydraulic cylinder to be N2, and N2 is equal to N1;
if Hs is greater than H0, the central control unit adjusts the pressing pressure of the hydraulic cylinder to be N2, and N2 is α × N1.
Further, the central control unit determines the adjustment coefficient of the hydraulic cylinder according to the detected difference between the thickness of the exhaust pipe partition plate and the preset thickness of the exhaust pipe partition plate, sets the first preset thickness difference to be H1, sets the second preset thickness difference to be H2, sets H1 to be less than H2,
setting a first adjustment coefficient of the hydraulic cylinder to be alpha 1, setting a second adjustment coefficient of the hydraulic cylinder to be alpha 2, setting a third adjustment coefficient of the hydraulic cylinder to be alpha 3, setting 1 to be more than alpha 1 and more than alpha 2 to be more than alpha 3 and less than 2,
if Hs-H0 is more than 0 and less than or equal to H1, the central control unit determines an adjustment coefficient alpha of the hydraulic cylinder, and alpha is alpha 1;
if H1 is more than Hs-H0 and less than or equal to H2, the central control unit determines an adjustment coefficient alpha of the hydraulic cylinder, and the alpha is alpha 2;
if Hs-H0 is larger than H2, the central control unit determines an adjustment coefficient alpha of the hydraulic cylinder, wherein alpha is alpha 3;
the central control unit calculates the adjusted depression pressure N2 of the hydraulic cylinder according to the determined adjustment coefficient of the hydraulic cylinder, and when N2 is α × N1, the determined adjustment coefficient α i of the hydraulic cylinder is substituted into N2 which is α i × N1, and i is set to 1, 2, and 3.
Further, if the adjusted hydraulic cylinder depression pressure N2 is greater than the maximum hydraulic cylinder pressure Nmax, the central control unit uses Nmax as the adjusted hydraulic cylinder depression pressure;
if the adjusted hydraulic cylinder depression pressure N2 is less than or equal to the maximum pressure Nmax of the hydraulic cylinder, the central control unit takes N2 as the adjusted hydraulic cylinder depression pressure.
Further, the central control unit receives the aperture of the pressure hole on the exhaust pipe partition plate detected by the image detection unit arranged above the connecting plate, sets the detected aperture to be Ks, sets the preset aperture of the exhaust pipe partition plate to be K0, sets the preset aperture difference value of the exhaust pipe partition plate to be K1, and when the detected aperture is larger than or equal to the preset aperture of the exhaust pipe partition plate, the central control unit judges whether the pressure hole of the exhaust pipe partition plate is qualified or not, then,
if the Ks-K0 is more than or equal to 0 and less than or equal to K1, the central control unit judges that the hole pressing operation of the exhaust pipe partition plate is qualified;
and if the Ks-K0 is larger than K1, the central control unit judges that the hole pressing operation of the exhaust pipe partition plate is unqualified.
Further, when the detected aperture is smaller than the preset aperture of the exhaust pipe partition plate, the central control unit judges whether the pressure hole of the exhaust pipe partition plate is qualified or not,
if K0-Ks is more than 0 and less than or equal to K1, the central control unit judges that the hole pressing operation of the exhaust pipe partition plate is qualified;
and if K0-Ks is larger than K1, the central control unit performs secondary hole pressing operation on the exhaust pipe partition plate.
Further, if the central control unit judges that the secondary hole-pressing operation is carried out on the exhaust pipe partition plate, the stress detector detects a secondary stress value of the exhaust pipe partition plate and transmits the detected secondary stress value to the central control unit, the central control unit compares the stress value of the exhaust pipe partition plate detected secondarily with the stress value of the exhaust pipe partition plate detected firstly to determine the pressing-down pressure of the secondary hole-pressing operation,
setting the stress value of the exhaust pipe partition detected twice as Gs2, setting the first preset stress difference value as G1, setting the second stress difference value as G2,
if the Gs-Gs2 is not less than 0 and not more than G1, the central control unit determines that the pressure of the second pressing is N3, and N3 is 0.9 xN 2;
if G1 < Gs-Gs2 is not less than G2, the central control unit determines that the pressure of the second pressing is N3, and N3 is 0.8 multiplied by N2;
if Gs-Gs2 is greater than G2, the central control unit determines that the pressure of the second pressing is N3, and N3 is 0.7 multiplied by N2;
and if Gs-Gs2 is less than 0, the central control unit judges that the stress detector has a fault.
Furthermore, after the central control unit performs secondary hole pressing on the exhaust pipe partition plate, the central control unit performs secondary judgment on whether the hole pressing of the exhaust pipe partition plate is qualified or not, the detected hole diameter after the secondary hole pressing is set as Ks2,
if the Ks2-K0 is less than or equal to K1, the central control unit judges that the secondary hole pressing operation of the exhaust pipe partition plate is qualified;
and if the | Ks2-K0| is more than K1, the central control unit judges that the secondary hole pressing operation of the exhaust pipe partition plate is unqualified.
Compared with the prior art, the invention has the advantages that the yield of the hole pressing of the production mold is improved by adjusting the hole pressing operation process of the exhaust pipe partition plate, the invention preliminarily determines the pressing pressure of the exhaust pipe partition plate through the stress of the exhaust pipe partition plate, adjusts the determined pressing pressure according to the difference between the actual thickness and the preset thickness of the exhaust pipe partition plate, operates the hole pressing of the exhaust pipe partition plate through the adjusted pressing pressure of the hydraulic cylinder, judges the qualification of the hole pressing of the exhaust pipe partition plate according to the difference between the hole diameter and the preset hole diameter after the hole pressing operation, and adjusts the pressing pressure of the hydraulic cylinder of the secondary hole pressing according to the difference between the stress detected secondarily and the stress detected primarily when the secondary hole pressing is needed by the central control unit, the pressing pressure of the hydraulic cylinder is adjusted layer by layer through the stress and the thickness of the exhaust pipe partition plate, so that the qualification rate of the hole pressing of the exhaust pipe partition plate is improved.
Further, the pressure of the hydraulic cylinder during pressing down is preliminarily determined through the difference value between the real-time stress and the preset stress of the exhaust pipe partition plate, the larger the stress of the exhaust pipe partition plate is, the larger the required pressing down pressure of the hydraulic cylinder is, the smaller the stress of the exhaust pipe partition plate is, the smaller the required pressing down pressure of the hydraulic cylinder is, and the preliminary adjustment is performed on the pressing down pressure of the hydraulic cylinder through the stress of the exhaust pipe partition plate so as to improve the frequency of adjustment and further improve the pressure hole qualification rate of the exhaust pipe partition plate.
Particularly, the increased pressure of the hydraulic cylinder is determined according to the difference value between the preset stress value of the exhaust pipe partition plate and the detected stress value of the exhaust pipe partition plate, and the pressing pressure of the hydraulic cylinder needing to be increased is determined according to the stress difference value, so that the accuracy of the pressing pressure of the hydraulic cylinder on the pressure of the exhaust pipe partition plate is improved, and the hole pressing qualified rate of the exhaust pipe partition plate is improved.
Particularly, the determined pressing pressure of the hydraulic cylinder is adjusted through the difference value between the thickness pair of the exhaust pipe partition plate and the preset thickness of the exhaust pipe partition plate, if the thickness difference value is within the preset range, the pressing pressure of the hydraulic cylinder is not adjusted, if the thickness difference value is not within the preset range, the pressing pressure of the hydraulic cylinder is adjusted differently according to different ranges of the thickness difference value, and the pressing pressure of the hydraulic cylinder is accurately adjusted, so that the pressing efficiency of the pressing die unit is improved.
Furthermore, the image detection unit is arranged to compare the pressed aperture of the exhaust pipe partition plate with the preset aperture of the exhaust pipe partition plate, if the pressed aperture is within the preset range, the hole pressing operation of the exhaust pipe partition plate is judged to be qualified, and if the pressed aperture is not within the preset range, the hole pressing operation of the exhaust pipe partition plate is judged to be required to be pressed for the second time or not.
Particularly, when secondary hole pressing is carried out, the pressing pressure of the secondary hole pressing is determined according to the stress value of the exhaust pipe partition board detected secondarily and the stress value of the exhaust pipe partition board detected firstly, and after the exhaust pipe partition board is pressed for the first time, the stress of the exhaust pipe partition board is reduced.
Drawings
FIG. 1 is a schematic structural view of a mold for producing an exhaust pipe partition plate of an automobile according to the present invention;
FIG. 2 is a schematic structural diagram of a fixing unit in the mold for producing the exhaust pipe partition board of the automobile according to the present invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 by those skilled in the art according to specific situations.
Referring to fig. 1-2, the present invention provides a mold for manufacturing a partition board of an automobile exhaust pipe, including a supporting unit, which includes a supporting frame 1 and a supporting rod 2, wherein the supporting frame 1 and the supporting rod 2 are used for supporting the mold. Fixed unit 5, it sets up the top of supporting element, fixed unit 5 includes bottom plate 3, bottom plate 3 top is provided with workstation 501, workstation 501's both sides are provided with electric telescopic rod 502, electric telescopic rod 502's outer wall fixed mounting has slipmat 503, electric telescopic rod 502 is used for fixing the blast pipe baffle, be provided with stress detector 504 on the bottom plate 3 for detect the stress of blast pipe baffle, be provided with ultrasonic thickness gauge 505 on the bottom plate 3 for detect the thickness of blast pipe baffle. The die pressing unit is arranged above the fixing unit 5 and comprises an electric lifting sleeve rod 4 arranged on the bottom plate 3, a connecting plate 6 is fixedly arranged at the top of the electric lifting sleeve rod 4, a hydraulic cylinder 8 is arranged on the connecting plate 6, a protective shell 7 is arranged outside the hydraulic cylinder 8, and a pressing block 10 is fixedly arranged at the bottom end of an output shaft 9 of the hydraulic cylinder 8 and used for pressing a hole of the exhaust pipe partition plate. The image detection unit is arranged below the connecting plate 6 and comprises an image detector 11 arranged above the to-be-punched hole part of the exhaust pipe clapboard, and the image detector is used for detecting the punching condition of the exhaust pipe clapboard. And the central control unit 12 is respectively connected with the fixing unit 5, the pressing die unit and the image detection unit and is used for adjusting the operation parameters of all units according to the parameters of the exhaust pipe partition plate.
Specifically, in the embodiment of the invention, the yield of the pressure hole of the production mold is improved by adjusting the pressure hole operation process of the exhaust pipe partition plate, the pressure of the downward pressing is preliminarily determined by the stress of the exhaust pipe partition plate, the determined pressure of the downward pressing is adjusted according to the difference between the actual thickness and the preset thickness of the exhaust pipe partition plate, the pressure hole of the exhaust pipe partition plate is operated by the adjusted pressure of the hydraulic cylinder 8, after the pressure hole operation, the pressure hole of the exhaust pipe partition plate is qualified according to the difference between the aperture and the preset aperture, when the pressure hole needs to be pressed for the second time, the central control unit 12 adjusts the pressure of the hydraulic cylinder 8 of the second pressure hole according to the difference between the stress detected for the second time and the stress detected for the first time, the pressure of the hydraulic cylinder 8 is adjusted by the stress and the thickness of the exhaust pipe partition plate, thereby improving the qualification rate of the pressure hole of the exhaust pipe clapboard.
Specifically, in the embodiment of the present invention, before the hole-pressing operation of the die unit, the central control unit 12 determines the pressure when the hydraulic cylinder 8 of the die unit is pressed down according to the stress value of the exhaust pipe diaphragm detected by the received stress detector 504, when the detected stress value of the exhaust pipe diaphragm is within the preset stress value range of the exhaust pipe diaphragm, the central control unit 12 determines the pressing-down pressure of the hydraulic cylinder 8 as the preset pressure of the hydraulic cylinder 8, and if the detected stress value of the exhaust pipe diaphragm is not within the preset stress value range of the exhaust pipe diaphragm, the central control unit 12 determines the increased pressure of the hydraulic cylinder 8 according to the difference between the preset stress value of the exhaust pipe diaphragm and the detected stress value of the exhaust pipe diaphragm.
Specifically, in the embodiment of the present invention, after determining the pressing pressure of the hydraulic cylinder 8, the central control unit 12 adjusts the determined pressing pressure of the hydraulic cylinder 8 according to the received difference between the thickness of the exhaust pipe partition detected by the ultrasonic thickness gauge 505 and the preset thickness of the exhaust pipe partition, and if the thickness difference is within the preset range, the pressing pressure of the hydraulic cylinder 8 is not adjusted, and if the thickness difference is not within the preset range, the pressing pressure of the hydraulic cylinder 8 is adjusted differently according to the different ranges of the thickness difference.
Specifically, in the embodiment of the present invention, after the pressing die unit performs the hole pressing operation on the exhaust pipe partition plate according to the adjusted pressing pressure of the hydraulic cylinder 8, the central control unit 12 receives the difference value between the aperture of the pressure hole on the exhaust pipe partition plate detected by the image detection unit and the preset aperture of the exhaust pipe partition plate to judge whether the pressure hole of the exhaust pipe partition plate is qualified or not, if so, the next exhaust pipe partition pressing operation is performed, and if it is determined that the second pressing operation is performed, the central control unit 12 determines a second pressing pressure according to a difference between the secondary stress value of the exhaust pipe partition detected by the stress detector 504 and the first detected stress value of the exhaust pipe partition, after the pressing die unit performs secondary hole pressing on the exhaust pipe partition plate, the central control unit 12 performs secondary judgment on the pressed hole of the exhaust pipe partition plate pressed for the second time.
Specifically, in the embodiment of the present invention, the central control unit 12 controls the push-and-pull of the electric telescopic push rod 502 to drive the anti-slip pad 503 to move, so as to fix the exhaust pipe partition plate and facilitate the hole pressing operation.
Specifically, as will be appreciated by those skilled in the art, when the stress detector 504 detects the stress of the spacer, if it is necessary to detect a blind hole in the spacer, the position of the blind hole should be within the position of the opening or the removed portion after the opening. The stress detector 504 detects the exhaust pipe partition plate of the automobile without affecting the performance of the exhaust pipe partition plate.
Specifically, in the embodiment of the invention, the electric lifting sleeve rods 4 are fixedly installed at the top of the bottom plate 3, the number of the electric lifting sleeve rods 4 is two, the electric lifting sleeve rods 4 are symmetrically arranged on the vertical centerline symmetry axis of the bottom plate 3, and the pressing block can be conveniently lifted and lowered through the arrangement of the electric lifting sleeve rods 4, so that the pressing block can be used for polishing the partition plate in a more fitting manner.
Specifically, in the embodiment of the invention, the central control unit determines the pressure when the hydraulic cylinder of the die unit is pressed down by receiving the stress value of the exhaust pipe separator detected by the stress detector arranged on the base plate,
setting the detected stress value of the exhaust pipe partition plate as Gs, setting the preset stress value of the exhaust pipe partition plate as G0, setting the preset pressure of the hydraulic cylinder as N0, setting the maximum pressure of the hydraulic cylinder as Nmax, and setting Nmax > 1.5 XN 0,
if Gs is less than or equal to G0, the central control unit determines that the pressing pressure of the hydraulic cylinder is N1, and N1 is N0;
if Gs > G0, the central control unit determines the pressing pressure N1 of the hydraulic cylinder, and N1 is N0+ Nj.
Specifically, in the embodiment of the present invention, the preset pressure of the hydraulic cylinder may be a half of the rated pressure of the hydraulic cylinder, and the preset stress value may be an average stress value of one hundred exhaust pipe diaphragms of the exhaust pipe diaphragms in the past, or may be an average stress value of fifty exhaust pipes in the past. The present invention is not limited to the specific configuration, and the specific implementation is subject to the limit.
Specifically, in the embodiment of the invention, the pressure of the hydraulic cylinder during pressing down is preliminarily determined through the difference between the real-time stress and the preset stress of the exhaust pipe partition plate, the larger the stress of the exhaust pipe partition plate is, the larger the required pressing pressure of the hydraulic cylinder is, the smaller the stress of the exhaust pipe partition plate is, the smaller the required pressing pressure of the hydraulic cylinder is, and the preliminary adjustment is performed on the pressing pressure of the hydraulic cylinder through the stress of the exhaust pipe partition plate so as to improve the frequency of adjustment, thereby improving the qualified rate of the pressure hole of the exhaust pipe partition plate.
Specifically, in the embodiment of the present invention, when the central control unit increases the depression pressure of the hydraulic cylinder, the central control unit determines the increased pressure of the hydraulic cylinder according to the difference between the preset stress value of the exhaust pipe diaphragm and the detected stress value of the exhaust pipe diaphragm, sets the increased pressure of the hydraulic cylinder to Nj,
if the Gs-G0 is more than 0 and less than or equal to 0.1 XG 0, the central control unit determines that the pressure Nj of the added hydraulic cylinder is 0.1 XN 0;
if the pressure Nj of the hydraulic cylinder is more than 0.1 XG 0 and less than or equal to Gs 0 and less than or equal to 0.2 XG 0, the central control unit determines that the pressure Nj of the increased hydraulic cylinder is 0.3 XN 0;
if the pressure Nj of the hydraulic cylinder is more than 0.2 XG 0 and less than or equal to Gs 0 and less than or equal to 0.3 XG 0, the central control unit determines that the pressure Nj of the increased hydraulic cylinder is 0.5 XN 0;
if Gs-G0 is greater than 0.3 XG 0, the central control unit determines that the increased pressure Nj of the hydraulic cylinder is Nmax-N0.
Specifically, in the embodiment of the invention, the increased pressure of the hydraulic cylinder is determined according to the difference value between the preset stress value of the exhaust pipe partition plate and the detected stress value of the exhaust pipe partition plate, and the pressing pressure of the hydraulic cylinder to be increased is determined according to the difference value of the stress, so that the accuracy of the pressing pressure of the hydraulic cylinder on the pressure of the exhaust pipe partition plate is improved, and the hole pressing qualification rate of the exhaust pipe partition plate is improved.
Specifically, in the embodiment of the present invention, the ultrasonic thickness gauge provided on the base plate detects the thickness of the exhaust pipe partition and transmits the detection data to the central control unit, the central control unit compares the detected thickness of the exhaust pipe partition with the preset thickness of the exhaust pipe partition, adjusts the determined pressing pressure of the hydraulic cylinder, sets the detected thickness of the exhaust pipe partition to be Hs, sets the preset thickness of the exhaust pipe partition to be H0, sets the adjustment coefficient of the hydraulic cylinder to be α,
if Hs is less than or equal to H0, the central control unit adjusts the pressing pressure of the hydraulic cylinder to be N2, and N2 is equal to N1;
if Hs is greater than H0, the central control unit adjusts the pressing pressure of the hydraulic cylinder to be N2, and N2 is α × N1.
Specifically, in the embodiment of the invention, the determined pressing pressure of the hydraulic cylinder is adjusted through the difference value between the thickness pair of the exhaust pipe partition plate and the preset thickness of the exhaust pipe partition plate, if the thickness difference value is within the preset range, the pressing pressure of the hydraulic cylinder is not adjusted, if the thickness difference value is not within the preset range, the pressing pressure of the hydraulic cylinder is adjusted differently according to different ranges of the thickness difference value, and the pressing pressure of the hydraulic cylinder is accurately adjusted, so that the pressing efficiency of the pressing die unit is improved.
Specifically, in the embodiment of the present invention, the central control unit determines the adjustment coefficient of the hydraulic cylinder according to the detected difference between the thickness of the exhaust pipe partition and the preset thickness of the exhaust pipe partition, sets the first preset thickness difference to be H1, sets the second preset thickness difference to be H2, sets H1 < H2,
setting a first adjustment coefficient of the hydraulic cylinder as alpha 1, setting a second adjustment coefficient of the hydraulic cylinder as alpha 2, setting a third adjustment coefficient of the hydraulic cylinder as alpha 3, setting 1 < alpha 2 < alpha 3 < 2,
if Hs-H0 is more than 0 and less than or equal to H1, the central control unit determines an adjustment coefficient alpha of the hydraulic cylinder, and alpha is alpha 1;
if H1 is greater than Hs-H0 and less than or equal to H2, the central control unit determines an adjustment coefficient alpha of the hydraulic cylinder, and alpha is alpha 2;
if Hs-H0 is larger than H2, the central control unit determines an adjustment coefficient alpha of the hydraulic cylinder, wherein alpha is alpha 3;
the central control unit calculates the adjusted depression pressure N2 of the hydraulic cylinder according to the determined adjustment coefficient of the hydraulic cylinder, and when N2 is α × N1, the determined adjustment coefficient α i of the hydraulic cylinder is substituted into N2 which is α i × N1, and i is set to 1, 2, and 3.
Specifically, in the embodiment of the present invention, the preset thickness of the exhaust pipe partition plate may be an average thickness of one hundred exhaust pipe partition plates in the past, or may be an average thickness of fifty exhaust pipes in the past, in this embodiment, the detection of the thickness may be a thickness detection of one point of the exhaust pipe partition plate, or may be an average value calculated by thickness detection of a plurality of points, the first preset thickness difference may be set to be one tenth of the preset thickness of the exhaust pipe partition plate, the second preset thickness difference may be set to be one eighth of the preset thickness, and this embodiment is not limited to this, which is implemented specifically.
Specifically, in the embodiment of the present invention, if the adjusted depression pressure N2 of the hydraulic cylinder is greater than the maximum pressure Nmax of the hydraulic cylinder, the central control unit uses Nmax as the adjusted depression pressure of the hydraulic cylinder;
if the adjusted hydraulic cylinder depression pressure N2 is less than or equal to the maximum pressure Nmax of the hydraulic cylinder, the central control unit takes N2 as the adjusted hydraulic cylinder depression pressure.
Specifically, in the embodiment of the present invention, the central control unit receives the hole diameter of the pressure hole on the exhaust pipe partition detected by the image detection unit disposed above the connection plate, sets the detected hole diameter to be Ks, sets the preset hole diameter of the exhaust pipe partition to be K0, sets the preset hole diameter difference value of the exhaust pipe partition to be K1, and determines whether the pressure hole of the exhaust pipe partition is qualified or not when the detected hole diameter is greater than or equal to the preset hole diameter of the exhaust pipe partition,
if the Ks-K0 is more than or equal to 0 and less than or equal to K1, the central control unit judges that the hole pressing operation of the exhaust pipe partition plate is qualified;
and if the Ks-K0 is larger than K1, the central control unit judges that the hole pressing operation of the exhaust pipe partition plate is unqualified.
Specifically, in the embodiment of the present invention, when the detected aperture is smaller than the preset aperture of the exhaust pipe partition, the central control unit determines whether the pressure hole of the exhaust pipe partition is qualified,
if K0-Ks is more than 0 and less than or equal to K1, the central control unit judges that the hole pressing operation of the exhaust pipe partition plate is qualified;
if K0-Ks is larger than K1, the central control unit carries out secondary hole pressing operation on the exhaust pipe partition plate.
Specifically, in the embodiment of the present invention, the preset aperture of the exhaust pipe partition board is the required aperture of the exhaust pipe partition board, and the difference between the preset apertures of the exhaust pipe partition board may be one tenth of the preset aperture as an error range value, or may be one eighth of the preset aperture, which is subject to the specific implementation.
Specifically, in the embodiment of the invention, the image detection unit is arranged to compare the pressed hole diameter of the exhaust pipe partition plate with the preset hole diameter of the exhaust pipe partition plate, if the hole diameter is within the preset range, the hole pressing operation of the exhaust pipe partition plate is judged to be qualified, and if the hole pressing operation is not within the preset range, the hole pressing operation needs to be performed for the second time or is not qualified.
Specifically, in the embodiment of the present invention, if the central control unit determines that the secondary pressure hole operation is performed on the exhaust pipe partition, the stress detector detects a secondary stress value of the exhaust pipe partition and transmits the detected secondary stress value to the central control unit, the central control unit compares the secondary detected stress value of the exhaust pipe partition with the first detected stress value of the exhaust pipe partition to determine the pressure for pressing down the secondary pressure hole,
setting the stress value of the exhaust pipe partition detected twice as Gs2, setting the first preset stress difference value as G1, setting the second stress difference value as G2,
if the Gs-Gs2 is not less than 0 and not more than G1, the central control unit determines that the pressure of the second pressing is N3, and N3 is 0.9 xN 2;
if G1 < Gs-Gs2 is not less than G2, the central control unit determines that the pressure of the second pressing is N3, and N3 is 0.8 multiplied by N2;
if Gs-Gs2 is greater than G2, the central control unit determines that the pressure of the second pressing is N3, and N3 is 0.7 multiplied by N2;
and if Gs-Gs2 is less than 0, the central control unit judges that the stress detector has a fault.
Specifically, in the embodiment of the invention, the image detection unit is arranged to compare the pressed hole diameter of the exhaust pipe partition plate with the preset hole diameter of the exhaust pipe partition plate, if the hole diameter is within the preset range, the hole pressing operation of the exhaust pipe partition plate is judged to be qualified, and if the hole pressing operation is not within the preset range, the hole pressing operation needs to be performed for the second time or is not qualified.
Specifically, in the embodiment of the present invention, after the central control unit performs secondary hole pressing on the exhaust pipe partition plate, the central control unit performs secondary determination on whether the hole pressing of the exhaust pipe partition plate is qualified or not, sets the hole diameter detected after the secondary hole pressing to be Ks2,
if the Ks2-K0 is more than or equal to 0 and less than or equal to K1, the central control unit judges that the secondary hole pressing operation of the exhaust pipe partition plate is qualified;
and if the | Ks2-K0| is more than K1, the central control unit judges that the secondary hole pressing operation of the exhaust pipe partition plate is unqualified.
Specifically, in the embodiment of the invention, during secondary hole pressing, the pressing pressure of the secondary hole pressing is determined according to the stress value of the exhaust pipe partition board detected secondarily and the stress value of the exhaust pipe partition board detected firstly, and after the exhaust pipe partition board is pressed for the first time, the stress of the exhaust pipe partition board is reduced.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A production die for a partition board of an automobile exhaust pipe is characterized by comprising,
the supporting unit comprises a supporting frame and a supporting rod, and the supporting frame and the supporting rod are used for supporting the production mold;
the fixing unit is arranged above the supporting unit and comprises a bottom plate, a workbench is arranged above the bottom plate, electric telescopic push rods are arranged on two sides of the workbench, anti-slip pads are fixedly arranged on the outer walls of the electric telescopic push rods, the electric telescopic push rods are used for fixing the exhaust pipe partition plate, a stress detector is arranged on the bottom plate and used for detecting the stress of the exhaust pipe partition plate, and an ultrasonic thickness gauge is arranged on the bottom plate and used for detecting the thickness of the exhaust pipe partition plate;
the die pressing unit is arranged above the fixing unit and comprises an electric lifting sleeve rod arranged on the bottom plate, a connecting plate is fixedly arranged at the top of the electric lifting sleeve rod, a hydraulic cylinder is arranged on the connecting plate, a protective shell is arranged outside the hydraulic cylinder, and a pressing block is fixedly arranged at the bottom end of an output shaft of the hydraulic cylinder and used for pressing holes of the exhaust pipe partition plate;
the image detection unit is arranged below the connecting plate, comprises an image detector arranged above a to-be-punched hole part of the exhaust pipe clapboard and is used for detecting the punching condition of the exhaust pipe clapboard;
the central control unit is respectively connected with the fixing unit, the pressing die unit and the image detection unit and is used for adjusting the operation parameters of all units according to the parameters of the exhaust pipe partition plate;
before the hole pressing operation is carried out on the die pressing unit, the central control unit determines the pressure when the hydraulic cylinder of the die pressing unit is pressed down according to the stress value of the exhaust pipe partition plate detected by the received stress detector, when the detected stress value of the exhaust pipe partition plate is within the range of the preset stress value of the exhaust pipe partition plate, the central control unit determines that the pressing pressure of the hydraulic cylinder is the preset pressure of the hydraulic cylinder, and if the detected stress value of the exhaust pipe partition plate is not within the range of the preset stress value of the exhaust pipe partition plate, the central control unit determines the increased pressure of the hydraulic cylinder according to the difference value between the preset stress value of the exhaust pipe partition plate and the detected stress value of the exhaust pipe partition plate;
after the pressing pressure of the hydraulic cylinder is determined, the central control unit adjusts the determined pressing pressure of the hydraulic cylinder according to the difference value between the thickness of the exhaust pipe partition plate detected by the received ultrasonic thickness gauge and the preset thickness of the exhaust pipe partition plate, if the thickness difference value is within a preset range, the pressing pressure of the hydraulic cylinder is not adjusted, and if the thickness difference value is not within the preset range, the pressing pressure of the hydraulic cylinder is adjusted differently according to different ranges of the thickness difference value;
when the pressing die unit performs hole pressing operation on the exhaust pipe partition plate according to the adjusted pressing pressure of the hydraulic cylinder, the central control unit receives a difference value between the hole diameter of the upper pressing hole of the exhaust pipe partition plate detected by the image detection unit and the preset hole diameter of the exhaust pipe partition plate to judge whether the pressing hole of the exhaust pipe partition plate is qualified or not, if the pressing hole is judged to be qualified or unqualified, hole pressing operation of the next exhaust pipe partition plate is performed, if the pressing hole is judged to be secondarily pressed, the central control unit determines the pressure of secondary pressing according to a difference value between the secondary stress value of the exhaust pipe partition plate detected by the stress detector and the stress value of the exhaust pipe partition plate detected for the first time, and after the pressing die unit performs secondary pressing hole pressing on the exhaust pipe partition plate, the central control unit performs secondary judgment on the pressing hole of the exhaust pipe partition plate pressed for the second time.
2. The mold for producing an exhaust pipe partition for an automobile according to claim 1, wherein the central control unit determines the pressure at which the hydraulic cylinder of the die unit is pressed down by receiving the stress value of the exhaust pipe partition detected by the stress detector provided on the bottom plate,
setting the detected stress value of the exhaust pipe partition plate as Gs, setting the preset stress value of the exhaust pipe partition plate as G0, setting the preset pressure of the hydraulic cylinder as N0, setting the maximum pressure of the hydraulic cylinder as Nmax, and setting Nmax > 1.5 XN 0,
if Gs is less than or equal to G0, the central control unit determines that the pressing pressure of the hydraulic cylinder is N1, and N1 is N0;
if Gs > G0, the central control unit determines the depression pressure N1 of the hydraulic cylinder, N1 being N0+ Nj, where Nj is the pressure of the hydraulic cylinder set to increase.
3. The mold for producing an exhaust pipe partition board of an automobile according to claim 2, wherein the central control unit determines the increased pressure of the hydraulic cylinder according to a difference between a preset stress value of the exhaust pipe partition board and a detected stress value of the exhaust pipe partition board when increasing the pressing pressure of the hydraulic cylinder, sets the increased pressure of the hydraulic cylinder to Nj,
if the Gs-G0 is more than 0 and less than or equal to 0.1 XG 0, the central control unit determines that the pressure Nj of the added hydraulic cylinder is 0.1 XN 0;
if the pressure Nj of the hydraulic cylinder is more than 0.1 XG 0 and less than or equal to Gs 0 and less than or equal to 0.2 XG 0, the central control unit determines that the pressure Nj of the increased hydraulic cylinder is 0.3 XN 0;
if the pressure Nj of the hydraulic cylinder is more than 0.2 XG 0 and less than or equal to Gs 0 and less than or equal to 0.3 XG 0, the central control unit determines that the pressure Nj of the increased hydraulic cylinder is 0.5 XN 0;
if Gs-G0 is greater than 0.3 XG 0, the central control unit determines that the increased pressure Nj of the hydraulic cylinder is Nmax-N0.
4. The mold for producing an exhaust pipe partition board for an automobile according to claim 3, wherein the ultrasonic thickness gauge provided on the base plate detects the thickness of the exhaust pipe partition board and transmits the detected data to the central control unit, the central control unit compares the detected thickness of the exhaust pipe partition board with a preset thickness of the exhaust pipe partition board, adjusts the determined pressing pressure of the hydraulic cylinder, sets the detected thickness of the exhaust pipe partition board to be Hs, sets the preset thickness of the exhaust pipe partition board to be H0, sets the adjustment coefficient of the hydraulic cylinder to be α,
if Hs is less than or equal to H0, the central control unit adjusts the pressing pressure of the hydraulic cylinder to be N2, and N2 is equal to N1;
if Hs is greater than H0, the central control unit adjusts the pressing pressure of the hydraulic cylinder to be N2, and N2 is α × N1.
5. The mold for producing an exhaust pipe partition board for an automobile according to claim 4, wherein the central control unit determines the adjustment coefficient of the hydraulic cylinder according to the difference between the detected thickness of the exhaust pipe partition board and the preset thickness of the exhaust pipe partition board, sets the first preset thickness difference to H1, sets the second preset thickness difference to H2, sets H1 < H2,
setting a first adjustment coefficient of the hydraulic cylinder as alpha 1, setting a second adjustment coefficient of the hydraulic cylinder as alpha 2, setting a third adjustment coefficient of the hydraulic cylinder as alpha 3, setting 1 < alpha 2 < alpha 3 < 2,
if Hs-H0 is more than 0 and less than or equal to H1, the central control unit determines an adjustment coefficient alpha of the hydraulic cylinder, and alpha is alpha 1;
if H1 is more than Hs-H0 and less than or equal to H2, the central control unit determines an adjustment coefficient alpha of the hydraulic cylinder, and the alpha is alpha 2;
if Hs-H0 is larger than H2, the central control unit determines an adjustment coefficient alpha of the hydraulic cylinder, wherein alpha is alpha 3;
the central control unit calculates the adjusted depression pressure N2 of the hydraulic cylinder according to the determined adjustment coefficient of the hydraulic cylinder, and when N2 is α × N1, the determined adjustment coefficient α i of the hydraulic cylinder is substituted into N2 which is α i × N1, and i is set to 1, 2, and 3.
6. The mold for producing an exhaust pipe partition board for an automobile according to claim 5,
if the adjusted pressing pressure N2 of the hydraulic cylinder is greater than the maximum pressure Nmax of the hydraulic cylinder, the central control unit takes Nmax as the adjusted pressing pressure of the hydraulic cylinder;
if the adjusted hydraulic cylinder depression pressure N2 is less than or equal to the maximum pressure Nmax of the hydraulic cylinder, the central control unit takes N2 as the adjusted hydraulic cylinder depression pressure.
7. The mold for producing an exhaust pipe partition board for an automobile according to claim 6, wherein the central control unit receives the hole diameter of the vent hole in the exhaust pipe partition board detected by the image detection unit disposed above the connection plate, sets the detected hole diameter to Ks, sets the preset hole diameter of the exhaust pipe partition board to K0, sets the preset hole diameter difference value of the exhaust pipe partition board to K1, and determines whether the vent hole in the exhaust pipe partition board is acceptable when the detected hole diameter is equal to or greater than the preset hole diameter of the exhaust pipe partition board,
if the Ks-K0 is more than or equal to 0 and less than or equal to K1, the central control unit judges that the hole pressing operation of the exhaust pipe partition plate is qualified;
if the Ks-K0 is larger than K1, the central control unit judges that the hole pressing operation of the exhaust pipe partition plate is unqualified.
8. The mold for producing an exhaust pipe partition plate for an automobile according to claim 7, wherein the center control unit determines whether or not the pressure hole of the exhaust pipe partition plate is acceptable when the detected hole diameter is smaller than a preset hole diameter of the exhaust pipe partition plate,
if K0-Ks is more than 0 and less than or equal to K1, the central control unit judges that the hole pressing operation of the exhaust pipe partition plate is qualified;
and if K0-Ks is larger than K1, the central control unit performs secondary hole pressing operation on the exhaust pipe partition plate.
9. The mold for producing an exhaust pipe partition board for an automobile according to claim 8, wherein if the central control unit determines that secondary hole-pressing operation is performed on the exhaust pipe partition board, the stress detector detects a secondary stress value of the exhaust pipe partition board and transmits the detected secondary stress value to the central control unit, the central control unit compares the secondarily detected stress value of the exhaust pipe partition board with the primarily detected stress value of the exhaust pipe partition board to determine a pressing-down pressure of the secondary hole-pressing,
setting the stress value of the exhaust pipe partition detected twice as Gs2, setting the first preset stress difference value as G1, setting the second stress difference value as G2,
if the Gs-Gs2 is not less than 0 and not more than G1, the central control unit determines that the pressure of the second pressing is N3, and N3 is 0.9 xN 2;
if G1 < Gs-Gs2 is not less than G2, the central control unit determines that the pressure of the second pressing is N3, and N3 is 0.8 multiplied by N2;
if Gs-Gs2 is greater than G2, the central control unit determines that the pressure of the second pressing is N3, and N3 is 0.7 multiplied by N2;
and if Gs-Gs2 is less than 0, the central control unit judges that the stress detector has a fault.
10. The mold for producing an exhaust pipe partition board of an automobile according to claim 9, wherein after the central control unit performs secondary hole-pressing on the exhaust pipe partition board, the central control unit performs secondary determination as to whether the hole-pressing of the exhaust pipe partition board is acceptable, and the hole diameter detected after the secondary hole-pressing is set to be Ks2,
if the Ks2-K0 is less than or equal to K1, the central control unit judges that the secondary hole pressing operation of the exhaust pipe partition plate is qualified;
and if the | Ks2-K0| is more than K1, the central control unit judges that the secondary hole pressing operation of the exhaust pipe partition plate is unqualified.
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| CN202111172851.0A CN114029393B (en) | 2021-10-08 | 2021-10-08 | Production mold for automobile exhaust pipe partition plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111172851.0A CN114029393B (en) | 2021-10-08 | 2021-10-08 | Production mold for automobile exhaust pipe partition plate |
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| CN111014423A (en) * | 2019-12-31 | 2020-04-17 | 南通福乐华机械有限公司 | Intelligent adjusting cutting edge of thick plate stamping die |
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| CN212340125U (en) * | 2020-04-21 | 2021-01-12 | 南京蜂动检测科技有限公司 | Thickness gauge capable of measuring thickness values of automobile parts under different pressures |
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| JPH1147997A (en) * | 1997-07-30 | 1999-02-23 | Amada Co Ltd | Punching method and its machine |
| CN105689500A (en) * | 2014-11-26 | 2016-06-22 | 无锡市通协物资有限公司 | Sheet metal punching device based on clamping pressure detection and laser drilling |
| CN206500488U (en) * | 2017-03-07 | 2017-09-19 | 辽宁工业大学 | Automatic punch press is used in auto parts and components manufacture |
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