Dummy rib production tool and method for automobile collision test

Abstract

The invention relates to the field of automobile collision safety testing, and discloses a dummy rib production tool and method for automobile collision testing, and the process comprises three parts: rib steel sheet processing, rib damping processing, and rib steel sheet and damping bonding. The machining process tool comprises a steel sheet bending device and a steel sheet positioning device, wherein the steel sheet bending device comprises a bottom plate, a rotating mechanism and a clamping mechanism. The dummy rib manufacturing process is simple and feasible, and the manufactured dummy rib is good in overall durability and high in stability. And the steel sheet bending device and the steel sheet positioning device are simple in structure, easy to operate and low in manufacturing cost, and meet the size requirements of various H3 series dummy ribs.

Description

Technical Field

[0001] The invention relates to the field of automobile collision safety testing, and in particular to a production tool and method for dummy ribs for automobile collision testing. Background Art

[0002] Automobile safety has always been a focus of public concern. Maximizing the protection of passengers during a car collision is a key issue in the study of automobile passive safety. The dummy used in automobile collision tests is a measuring device that simulates human biomechanical damage. The degree of damage to each part of the dummy used in automobile collision tests is the standard for determining the safety performance of the car. Regarding the protection of various parts of the occupants, airbags can effectively reduce the degree of injury to the occupants' heads and necks. However, due to the complexity of chest biomechanics and the limited space for the driver, the protection effect on the chest is not ideal. Therefore, the degree of injury to the driver's chest is much greater than that of other occupants. The study of the mechanical response characteristics of the chest is necessarily important.

[0003] The chest of the collision dummy is composed of ribs and chest skin. The mechanical properties of the ribs reflect the degree of chest damage and are the main bearer of chest response. The ribs are the key to affecting the mechanical properties of the chest. The ribs are made of damping material and metal steel sheets. The damping material causes the hysteresis effect during impact, and the spring steel sheet undergoes a certain amount of elastic deformation to store some energy. The synergistic effect of the above two materials meets the requirements of the dummy ribs in terms of external dimensions and dynamic response bionics.

[0004] The chest rib assembly of the collision dummy is composed of six individual ribs, and the adhesion between the steel sheet and the damping material will affect the overall mechanical properties of the ribs. Whether the dummy ribs meet the standard requirements needs to be verified through multiple impact tests, so the durability of the ribs is also particularly important. CN117415750A discloses a fixture and bonding method for the chest rib damping of a collision dummy, which uses two motors to drive a threaded screw slide to pre-bend and bond the damping placed in the limit groove, and controls the pressure value through two pressure sensors. It should be pointed out that the device has a high cost and requires high precision for the screw slide. It is theoretically achievable, but it is more difficult to achieve in practical applications. Each time bonding is performed, the adhesive may adhere to the tooling, and the entire fixture needs to be cleaned without damaging the sensor and the screw slide.

[0005] Currently, there is a need for a collision dummy rib manufacturing process and tooling that can ensure the mechanical properties and durability of the ribs while meeting the requirements of simple and feasible process steps and low production cost. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a method for producing dummy ribs for automobile collision tests. The tooling and method for producing dummy ribs for automobile collision tests can not only meet the rib production requirements of various H3 dummies, but also the ribs produced by the method have strong adhesion, good durability, reliable stability, and can be reused many times.

[0007] The present invention also provides a tooling involved in the preparation process of the above-mentioned method for producing dummy ribs for automobile collision testing.

[0008] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0009] On the one hand, the present invention provides a dummy rib production tool for automobile collision testing, including a steel sheet bending device and a steel sheet positioning device.

[0010] The steel sheet bending device comprises: a base plate, a rotating mechanism, and a clamping mechanism; the steel sheet bending device can be fixed on any working plane for trial use through the base plate; the rotating mechanism is connected to the base plate through a central rotating shaft; the clamping mechanism is installed on the base plate and used in conjunction with the rotating mechanism.

[0011] Furthermore, the rotating mechanism includes a rotating disc, a rotating rod, a guide wheel, and an adjusting rod. The rotating disc is fixed to the base plate through a positioning pin and a hinge mechanism passing through the center of the circle. The center of the circle of the rotating disc is hinged to the left end of the rotating rod through the hinge mechanism. The rotating rod rotates with the hinge mechanism as the center of the circle and applies force to bend the steel sheet. The adjusting rod on the lower side of the rotating rod cooperates with the guide wheel through a positioning screw. The tail end of the rotating rod tightens the adjusting rod through a screw so that the guide wheel just clamps the steel sheet of corresponding thickness with the rotating disc. A through-hole slide groove is provided in the middle of the rotating rod, which is used for the screw to fix the position of the adjusting rod upward through the slide groove.

[0012] Furthermore, the clamping mechanism includes a top block, a positioning block, and a stop block. The top block is located at the right front wall end of the rotating disk. The positioning block is fixed to the right upper end of the base plate by a screw. The top block cooperates with the screw connected to the internal thread of the positioning block. The screw through the positioning block applies force to the top block to press the rib steel sheets of different thicknesses for positioning and clamping. The positioning block and the stop block are coordinated by rotating the screw to ensure that no deformation occurs during the bending process of the rib installation plane.

[0013] The steel sheet positioning device is I-shaped, with one end using screws to fix the head and tail ends of the rib steel sheet respectively, and the other end using screws to fix the front chest side of the rib steel sheet, which is used to fix and position the rib steel sheet to facilitate subsequent bonding of the damping sheet.

[0014] Furthermore, the steel sheet positioning device corresponds to different sizes according to the rib models of different types of dummies.

[0015] On the other hand, the present invention also provides a method for producing dummy ribs for automobile collision tests, which is performed using a dummy rib production tool for automobile collision tests; the method steps are divided into three parts: the first part is rib steel sheet processing, the second part is rib damping processing, and the third part is bonding the rib steel sheet and the damping; the specific method steps are as follows:

[0016] Part 1 Rib steel sheet processing:

[0017] Step 101: Steel sheet cutting: According to the rib steel sheet sizes of different types of dummies, optimize the raw material steel sheet layout, use a laser cutting machine for precision cutting, and chamfer the steel sheet installation holes. Ensure that the cutting is smooth, the edges are neat, there are no burrs or sharp corners, and ensure the accuracy of the steel sheet width and hole position;

[0018] Step 102: bending the steel sheet: the steel sheet is bent by using the steel sheet bending device, the cut steel sheet is passed through the clamping mechanism, and according to the marked position of the steel sheet, the adjusting rod on the lower side of the guide rod of the rotating mechanism is adjusted to make the guide wheel fit and clamp the steel sheet; the positioning block is then adjusted by rotating the screw so that the steel sheet fits tightly with the stopper; the inner side of the steel sheet is first bent, and then the front and rear ends of the steel sheet are bent, and the bent steel sheet is fine-tuned and corrected by using a vise to adjust the fit between the steel sheet and the plane;

[0019] Step 103: heat treatment: vacuum heat treatment is performed on the steel sheet to control the hardness of the steel sheet;

[0020] Step 104: removing oxide scale: polishing the inside and outside of the steel sheet, using a fiber polishing wheel to remove oxide scales from the outer contour of the steel sheet, and using an inner hole grinder with a fiber polishing head to remove oxide scales from the inner side of the steel sheet, to ensure that the surface of the steel sheet is smooth and bright without residual oxide scales;

[0021] Step 105: electrophoresis: coloring and rust-proofing the formed steel sheet;

[0022] Step 106: Gluing the steel sheet: Use absorbent cotton to clean the dust and oil on the surface of the steel sheet, and use paper tape to cover the outside of the steel sheet to prevent the paint on the steel sheet from being damaged during subsequent processes and rib calibration;

[0023] Step 107: Marking and polishing: Mark the inside of the steel sheet according to the damping size to facilitate the subsequent damping bonding by comparing the marked position; polish and clean the paint on the arc inside the steel sheet according to the boundary determined by the marking, and wipe the inside of the steel sheet with an absorbent cotton pad dipped in an appropriate amount of alcohol to remove oil stains and dust on the surface of the steel sheet;

[0024] Step 108: Drying the steel sheet: Place the steel sheet in an oven at 60-70°C for 5-10 minutes to evaporate the residual alcohol and keep the surface of the steel sheet clean and dry;

[0025] More preferably: in step 101, the four mounting holes of the steel sheet are chamfered, and the chamfering is controlled at C0.5.

[0026] More preferably: in the step 102, the fit between the two end faces in the width direction of the steel sheet and the plane of the workbench is ≤0.2mm, and the overlap between the shape of the steel sheet and the template is controlled to be ≤0.5mm.

[0027] More preferably: in step 103, the hardness deviation needs to be controlled within ±1.5°, the heat treatment hardness uniformity is required to be controlled within ±1.5, and the loss of oxide scale thickness on the steel sheet surface is controlled within <0.08 mm.

[0028] More preferably, in step 108, after the steel sheet is dried, it is necessary to take the steel sheet out of the oven at least 10 minutes in advance before gluing, so that the temperature of the steel sheet drops to room temperature to avoid excessively high temperature affecting the gluing effect.

[0029] Part 2 Rib Damping Processing:

[0030] Step 201: Damping processing: cutting and processing according to the damping thickness and size requirements of different dummy types;

[0031] Step 202: Bevel processing: bevel processing is performed on both ends of one side of the damping plate;

[0032] Step 203: Damping glue: clean the surface of the damping material and completely cover the damping processing slope surface with paper tape to prevent the other side of the damping from being adhered to glue during the damping bonding process and keep the damping surface clean;

[0033] Step 204: Numbering and cleaning: number the entire set of dampers from "1-6" according to the rib size of the corresponding dummy type, corresponding to the size of the steel sheet one by one, and wipe the inside of the steel sheet with absorbent cotton soaked in an appropriate amount of alcohol to remove surface oil stains and dust;

[0034] Step 205: Drying and pre-bending: Place the damper with the outer side facing upward in an oven, and preheat at an appropriate temperature for 2-3 hours according to the damping characteristics. After preheating, pre-bend the damping strip to shape;

[0035] More preferably, in step 201, the damping surface should be flat and smooth, with the thickness error controlled within ±0.2 mm of the required size, and the angle controlled within ±0.5° of the required size.

[0036] More preferably, in step 202, the processing slope of the damping head and tail sections is 75°.

[0037] Part 3 Bonding of rib steel sheets and damping:

[0038] Step 301: Lining steel sheet filming: Clean the surface of the lining steel sheet, and cover the outer side of the lining steel sheet with paper tape to prevent the inner surface of the damper from being damaged during the subsequent damping adhesive fixation process, thereby protecting the damper. When the G-type clamp is used for positioning and fixing, the lining steel sheet is used to increase the force bearing area of ​​the G-type clamp, thereby ensuring that the force is more uniform and the bonding is more firm during the damping bonding.

[0039] Step 302: Fixing the steel sheet: Differentiate the size of the steel sheet positioning device of the rib according to the type of dummy, and connect the device to the two ends of the steel sheet with screws. The steel sheet positioning device keeps the steel sheet at the same horizontal position at all times, and avoids affecting the flatness and symmetry of the steel sheet during the damping gluing process;

[0040] Step 303: Damping bonding: Use bonding glue in a certain ratio to evenly apply it on the inner side of the steel sheet and the inner side of the pre-pressed damping, bond the steel sheet and the damping together, and pad the inner lining steel sheet on the other side of the damping, use a G-type clamp for positioning and clamping, and then wipe off the remaining glue with a cotton cloth dipped in a small amount of alcohol;

[0041] Step 304: drying and curing: the bonded ribs are placed in a natural state above 20°C for 8-10 hours. After the ribs are shaped, the G-type clamps and the inner lining steel sheets are removed, and the residual paper tape on the outer surface of the damping is removed. According to the different damping characteristics, the ribs are placed in an oven at a suitable temperature for timed drying;

[0042] Step 305: Glue removal: remove the tape on the outside of the dried rib steel sheet, and clean up the excess glue residue on the surface to prevent the excess tape and glue residue from affecting the chest rib impact data.

[0043] It can be seen from the above technical scheme that the present invention has the following advantages: the manufacturing tooling and method for the dummy ribs for automobile collision test provided by the present invention is used to manufacture the dummy chest ribs, the manufacturing process is simple and feasible, the manufactured ribs have good overall durability and strong stability. The steel sheet bending device and the steel sheet positioning device have simple structures, are easy to operate, have low manufacturing costs, and are adapted to the size requirements of various H3 series dummy ribs. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic diagram of the structure of a steel sheet bending device for a dummy rib production tool for automobile collision testing provided by the present invention;

[0045] Figure 2 A schematic diagram of the structure of a dummy rib production tool for automobile collision testing provided by the present invention;

[0046] Figure 3 A flow chart of a method for producing dummy ribs for automobile collision testing provided by the present invention;

[0047] Wherein: 1-bottom plate, 2-rotating mechanism, 21-rotating disc, 22-rotating rod, 23-guide wheel, 24 adjusting rod, 3-clamping mechanism, 31-top block, 32-positioning block, 33 baffle, 4-rib steel sheet, 5-steel sheet positioning device. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical scheme and advantages of the present invention clearer, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. However, the present invention is not limited to the scope of the following embodiments, and the implementation conditions used in the embodiments can be further adjusted according to specific requirements, and the unspecified actual conditions are usually conventional conditions.

[0049] See also Figure 1 , Figure 2 The steel sheet bending device includes: a base plate 1, a rotating mechanism 2, and a clamping mechanism 3; the steel sheet bending device can be fixed on any working plane for trial through the base plate 1; the rotating mechanism 2 is connected to the base plate 1 through a central rotating shaft; the clamping mechanism 3 is installed on the base plate 1 and used in conjunction with the rotating mechanism 2.

[0050] The rotating mechanism 2 includes a rotating disc 21, a rotating rod 22, a guide wheel 23, and an adjusting rod 24. The rotating disc 21 is fixed to the base plate 1 through a positioning pin and a hinge mechanism passing through the center of the circle. The center of the rotating disc 21 is hinged to the left end of the rotating rod 22 through a hinge mechanism. The rotating rod 22 rotates with the hinge mechanism as the center of the circle and applies force to bend the steel sheet 4. The adjusting rod 24 on the lower side of the rotating rod 22 cooperates with the guide wheel 23 through a positioning screw. The rear end of the rotating rod 22 tightens the adjusting rod 24 through a screw so that the guide wheel 23 just clamps the steel sheet 4 of the corresponding thickness with the rotating disc 21. A through-hole slide groove is provided in the middle of the rotating rod 22, which is used for the screw to fix the position of the adjusting rod 24 upward through the slide groove.

[0051] The clamping mechanism 3 includes a top block 31, a positioning block 32, and a stop block 33. The top block 31 is located at the right front wall end of the rotating disk 21. The positioning block 32 is fixed to the right upper end of the bottom plate 1 by screws. The top block 31 cooperates with the screws connected to the internal threads of the positioning block 32. The screws through the positioning block 32 apply force to the top block 31 to press the rib steel sheets 4 of different thicknesses for positioning and clamping. The positioning block 32 and the stop block 33 are coordinated by rotating the screws to ensure that no deformation occurs during the bending process of the rib installation plane.

[0052] The steel sheet positioning device 5 is I-shaped, with one end fixed to the head and tail ends of the rib steel sheet 4 by screws, and the other end fixed to the front chest side of the rib steel sheet 4 by screws, for fixing and positioning the rib steel sheet 4, facilitating the subsequent bonding of the damping sheet.

[0053] Specifically, the steel sheet positioning device 5 has different sizes corresponding to the rib models of different types of dummies.

[0054] On the other hand, the present invention also provides a method for producing dummy ribs for automobile collision tests, which is performed using a dummy rib production tool for automobile collision tests; the method steps are divided into three parts: the first part is rib steel sheet processing, the second part is rib damping processing, and the third part is bonding the rib steel sheet and the damping; the specific method steps are as follows:

[0055] Part 1 Rib steel sheet processing:

[0056] Step 101: Steel sheet cutting: According to the rib steel sheet sizes of different types of dummies, optimize the raw material steel sheet layout, use a laser cutting machine for precision cutting, and chamfer the mounting holes of the steel sheet 4. Ensure that the cutting is smooth, the edges are neat, and there are no burrs or sharp corners, and ensure the accuracy of the width of the steel sheet 4 and the hole position.

[0057] Step 102: Bending the steel sheet: The steel sheet 4 is bent using the steel sheet bending device, the cut steel sheet 4 is passed through the clamping mechanism 3, and according to the marked position of the steel sheet 4, the adjusting rod on the lower side of the guide rod 22 of the rotating mechanism 2 is adjusted to make the guide rail 23 fit and clamp the steel sheet 4; then the positioning block 32 is adjusted by rotating the screw so that the steel sheet 4 fits tightly with the stop block 33; then the inner side of the steel sheet 4 is bent first, and then the head and tail ends of the steel sheet 4 are bent, and a vise is used to fine-tune the bent steel sheet 4 to adjust the fit between the steel sheet 4 and the plane.

[0058] Step 103: Heat treatment: Perform vacuum heat treatment on the steel sheet 4 to control the hardness of the steel sheet 4.

[0059] Step 104: Removing oxide scale: Polishing the inside and outside of the steel sheet 4, using a fiber polishing wheel to remove oxide scales from the outer contour of the steel sheet 4, and using an inner hole grinder with a fiber polishing head to remove oxide scales from the inner side of the steel sheet 4, to ensure that the surface of the steel sheet 4 is smooth and bright without residual oxide scale.

[0060] Step 105: electrophoresis: electrophoresis coloring and rust prevention treatment are performed on the formed steel sheet 4.

[0061] Step 106: Gluing the steel sheet: Use absorbent cotton to clean the dust and oil on the surface of the steel sheet 4, and use paper tape to cover the outer surface of the steel sheet 4 to prevent the paint on the surface of the steel sheet 4 from being damaged during subsequent processes and rib calibration.

[0062] Step 107: Marking and polishing: Mark the inner side of the steel sheet 4 according to the damping size to facilitate the subsequent damping bonding by comparing the marked position; polish and clean the paint on the inner arc of the steel sheet 4 according to the boundary determined by the marking, take a cotton swab dipped in an appropriate amount of alcohol to wipe the inner side of the steel sheet 4 to remove oil stains and dust on the surface of the steel sheet 4.

[0063] Step 108: Steel sheet drying: Place the steel sheet 4 in an oven at a temperature of 60-70° C. for 5-10 minutes to evaporate the residual alcohol and keep the surface of the steel sheet 4 clean and dry.

[0064] More preferably: in step 101, the four mounting holes of the steel sheet are chamfered, and the chamfering is controlled at C0.5.

[0065] More preferably: in the step 102, the fit between the two end faces of the steel sheet 4 in the width direction and the plane of the workbench is ≤ 0.2 mm, and the overlap between the shape of the steel sheet and the template is ≤ 0.5 mm.

[0066] More preferably: in step 103, the hardness deviation needs to be controlled within ±1.5°, the heat treatment hardness uniformity is required to be controlled within ±1.5, and the loss of oxide scale thickness on the steel sheet surface is controlled within <0.08 mm.

[0067] More preferably, in step 108, after the steel sheet 4 is dried, it is necessary to take the steel sheet 4 out of the oven at least 10 minutes in advance before gluing, so that the temperature of the steel sheet 4 drops to room temperature to avoid excessive temperature affecting the gluing effect.

[0068] Part 2 Rib Damping Processing:

[0069] Step 201: Damping processing: Processing is performed according to the damping thickness requirements of different dummy types.

[0070] Step 202: Bevel processing: bevel processing is performed on both ends of one side of the damping plate.

[0071] Step 203: Damping glue: Clean the surface of the damping material and completely cover the damping processed slope surface with paper tape to prevent glue from adhering to the other side of the damping surface during the damping bonding process and keep the damping surface clean.

[0072] Step 204: Numbering and cleaning: According to the rib size of the corresponding dummy type, the entire set of dampers is numbered "1-6", corresponding to the size of the steel sheet 4 one by one, and the inside of the steel sheet 4 is wiped with absorbent cotton soaked in a proper amount of alcohol to remove surface oil stains and dust.

[0073] Step 205: Drying and pre-bending: Place the damper with its outer side facing upward in an oven, and preheat for 2-3 hours at a suitable temperature according to the damping characteristics. After preheating, pre-bend the damping strip.

[0074] More preferably, in step 201, the damping surface should be flat and smooth, with the thickness error controlled within ±0.2 mm of the required size, and the angle controlled within ±0.5° of the required size.

[0075] More preferably, in step 202, the processing slope of the damping head and tail sections is 75°.

[0076] Part 3 Bonding of rib steel sheets and damping:

[0077] Step 301: Gluing the inner lining steel sheet: Clean the surface of the inner lining steel sheet and cover the outer side of the inner lining steel sheet with paper tape to prevent the inner surface of the damper from being damaged during the damping adhesive fixation process, thereby protecting the damper. When the G-type clamp is used for positioning and fixing, the inner lining steel sheet is used to increase the force-bearing area of ​​the G-type clamp, thereby ensuring that the force is more uniform and the bonding is more firm during the damping bonding.

[0078] Step 302: Fixing the steel sheet: Differentiate the size of the steel sheet positioning device 5 of the rib according to the type of dummy, and use screws to connect and fix the device to the two ends of the steel sheet 4. The steel sheet positioning device 5 keeps the steel sheet 4 at the same horizontal position at all times, and avoids affecting the flatness and symmetry of the steel sheet 5 during the damping gluing process.

[0079] Step 303: Damping bonding: Use 3M-2216 adhesive glue to evenly apply on the inner side of the steel sheet 4 and the inner side of the pre-pressed damping in a certain ratio, bond the steel sheet 4 and the damping together, and pad the inner lining steel sheet 4 on the other side of the damping, use a G-type clamp for positioning and clamping, and finally wipe off the remaining glue with a cotton cloth dipped in a small amount of alcohol.

[0080] Step 304: Drying and curing: Place the bonded ribs in a natural state above 20°C for 8-10 hours. After the ribs are shaped, remove the G-type clamps and the inner lining steel sheets, and remove the residual paper tape on the outer surface of the damping. According to the different damping characteristics, place the ribs in an oven at a suitable temperature for timed drying.

[0081] Step 305: Glue removal: remove the adhesive tape on the outer side of the dried rib steel sheet 4 and clean the excess adhesive residue on the surface to prevent the excess adhesive tape and adhesive residue from affecting the chest rib impact data.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present invention.

Claims

1. A tooling for producing dummy ribs for automobile collision testing, characterized in that: include: Steel sheet bending device, steel sheet positioning device (5); The steel sheet bending device comprises: a base plate (1), a rotating mechanism (2), and a clamping mechanism (3); the steel sheet bending device is fixed on any working plane for trial use via the base plate (1); the rotating mechanism (2) is connected to the base plate (1) via a central rotating shaft; the clamping mechanism (3) is installed on the base plate (1) and is used in conjunction with the rotating mechanism (2); The rotating mechanism (2) comprises a rotating disc (21), a rotating rod (22), a guide wheel (23), and an adjusting rod (24). The rotating disc (21) is fixed to the bottom plate (1) through a positioning pin and a hinge mechanism passing through the center of the circle. The center of the rotating disc (21) is hinged to the left end of the rotating rod (22) through the hinge mechanism. The rotating rod (22) rotates with the hinge mechanism as the center of the circle and applies force to bend the steel sheet (4). The adjusting rod (24) on the lower side of the rotating rod (22) cooperates with the guide wheel (23) through a positioning screw. The rear end of the rotating rod (22) is tightened with the adjusting rod (24) by a screw so that the guide wheel (23) just clamps the steel sheet (4) of the corresponding thickness with the rotating disc (21). A through-hole slide groove is provided in the middle of the rotating rod (22) for screws to fix the position of the adjusting rod (24) upward through the slide groove; The clamping mechanism (3) in the steel sheet bending device comprises a top block (31), a positioning block (32), and a stop block (33). The top block (31) is located at the right front wall end of the rotating disk (21). The positioning block (32) is fixed to the right upper end of the bottom plate (1) by means of screws. The top block (31) cooperates with a screw connected to the internal thread of the positioning block (32). The screw passing through the positioning block (32) applies force to the top block (31) to press the rib steel sheets of different thicknesses for positioning and clamping. The positioning block (32) cooperates with the stop block (33) by rotating the screw to ensure that no deformation occurs during the bending process of the rib installation plane. The rib steel sheet processing method specifically comprises the following steps: Step 101: Steel sheet cutting: According to the size of the rib steel sheet of different types of dummies, the raw material steel sheet is optimized and precisely cut, and the mounting holes of the steel sheet (4) are chamfered to ensure the accuracy of the width and hole position of the steel sheet (4); Step 102: bending the steel sheet: the steel sheet (4) is bent using the steel sheet bending device, the cut steel sheet (4) is passed through the clamping mechanism (3), and according to the marked position of the steel sheet (4), the adjusting rod on the lower side of the guide rod (22) of the rotating mechanism (2) is adjusted so that the guide wheel (23) fits and clamps the steel sheet (4); the positioning block (32) is then adjusted by rotating the screw so that the steel sheet (4) fits tightly with the stop block (33); the inner side of the steel sheet (4) is first bent, and then the front and rear ends of the steel sheet (4) are bent, and the degree of fit between the steel sheet (4) and the plane is adjusted; Step 103: heat treatment: performing vacuum heat treatment on the steel sheet (4) to control the hardness of the steel sheet (4); Step 104: descaling: polishing the inner and outer sides of the steel sheet (4) to remove the inner and outer oxide scales, thereby ensuring that the surface of the steel sheet (4) is smooth and bright; Step 105: electrophoresis: electrophoresis coloring and rust prevention treatment are performed on the formed steel sheet (4); Step 106: Gluing the steel sheet: clean the dust and oil on the surface of the steel sheet (4) with absorbent cotton, and cover the outer surface of the steel sheet (4) with paper tape; Step 107: Marking and polishing: Mark the inside of the steel sheet (4) according to the damping size, polish and clean the paint on the arc inside the steel sheet (4) according to the boundary determined by the marking, and wipe the inside of the steel sheet (4) with a cotton pad soaked in an appropriate amount of alcohol to remove oil stains and dust on the surface of the steel sheet (4); Step 108: Drying the steel sheet: Place the steel sheet (4) in an oven at a temperature of 60-70°C for 5-10 minutes to evaporate the residual alcohol and keep the surface of the steel sheet (4) clean and dry.

2. The method for producing dummy ribs for automobile collision test according to claim 1, characterized in that: In the rib steel sheet processing method, the step 101 controls the chamfering of the four mounting holes of the steel sheet (4) to be C0.

5.

3. The method for producing dummy ribs for automobile collision test according to claim 1, characterized in that: In the rib steel sheet processing method, in step 102, the degree of fit between the two end faces in the width direction of the steel sheet (4) and the plane of the workbench is ≤0.2 mm, and the degree of overlap between the outer shape of the steel sheet (4) and the template is ≤0.5 mm.

4. The method for producing dummy ribs for automobile collision test according to claim 1, characterized in that: In the rib steel sheet processing method, in step 103, the hardness deviation needs to be controlled within ±1.5°, the heat treatment hardness uniformity is required to be controlled within ±1.5, and the thickness loss of the oxide scale on the surface of the steel sheet (4) is controlled to be less than 0.08 mm.

5. The method for producing dummy ribs for automobile collision test according to claim 1, characterized in that: In the rib steel sheet processing method, in step 108, after the steel sheet (4) is dried, the steel sheet (4) needs to be taken out of the oven at least 10 minutes in advance before gluing, so that the temperature of the steel sheet (4) drops to room temperature to avoid excessive temperature affecting the gluing effect.

6. A method for producing dummy ribs for automobile collision testing, characterized in that: The rib damping processing method specifically includes the following steps: Step 201: Damping processing: cutting and processing according to the damping thickness and size requirements of different dummy types; Step 202: Bevel processing: bevel processing is performed on both ends of one side of the damping plate; Step 203: Damping glue: clean the surface of the damping material and completely cover the damping processing slope surface with paper tape to prevent the other side of the damping from being adhered to glue during the damping bonding process and keep the damping surface clean; Step 204: Numbering and cleaning: number the entire set of dampers from "1 to 6" according to the rib size of the corresponding dummy type, corresponding one to one with the size of the steel sheet (4), and wipe the inside of the steel sheet (4) with absorbent cotton soaked in an appropriate amount of alcohol to remove surface oil stains and dust; Step 205: Drying and pre-bending: Place the damper with its outer side facing upward in an oven, and preheat for 2-3 hours at a suitable temperature according to the damping characteristics. After preheating, pre-bend the damping strip.

7. A method for producing dummy ribs for automobile collision testing according to claim 6, characterized in that: In the rib damping processing method, in step 201, the damping surface is kept flat and smooth, and the thickness error is required to be controlled within ±0.2 mm of the required size, and the angle is controlled within ±0.5° of the required size.

8. The method for producing dummy ribs for automobile collision testing according to claim 6, characterized in that: In the rib damping processing method, in step 202, the processing slope of the damping head and tail sections is 75°.

9. A method for producing dummy ribs for automobile collision testing, characterized in that: The bonding method of the rib steel sheet and the damping specifically includes the following steps: Step 301: filming the inner lining steel sheet: clean the surface of the inner lining steel sheet, and cover the outer side of the inner lining steel sheet with paper tape to prevent the inner surface of the damper from being damaged during the damping adhesive fixation process; and when the G-type clamp is used for positioning and fixing, the inner lining steel sheet is used to increase the force bearing area of ​​the G-type clamp to ensure that the force is more uniform and the bonding is more firm during the damping bonding; Step 302: fixing the steel sheet: according to the size of the steel sheet positioning device (5) of the ribs of different dummies, the device is connected and fixed to the two ends of the steel sheet (4) with screws. The steel sheet positioning device (5) keeps the steel sheet (4) at the same horizontal position at all times, and avoids affecting the flatness and symmetry of the steel sheet (4) during the damping gluing process; Step 303: Damping bonding: Use bonding glue in a certain ratio to evenly apply it on the inner side of the steel sheet (4) and the inner side of the pre-pressed damping, bond the steel sheet (4) and the damping together, and pad the inner lining steel sheet (4) on the other side of the damping, and use a G-type clamp to position and clamp it; Step 304: drying and curing: placing the bonded ribs in a natural state above 20°C for 8-10 hours, removing the residual paper tape on the outer surface of the damping after the ribs are shaped, and placing the ribs in an oven at a suitable temperature for timed drying according to the different damping characteristics; Step 305: Glue removal: remove the adhesive tape on the outside of the dried rib steel sheet (4), and clean the excess adhesive residue on the surface to prevent the excess adhesive tape and adhesive residue from affecting the chest rib impact data.

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