Automobile beam punching and angle trimming equipment and method

Abstract

The present invention proposes a device and method for punching and trimming automobile beams. The device includes a beam fixing device and a stamping die set. The beam fixing device is used to position and fix the automobile beam. The stamping die set is arranged on one side of the beam fixing device. The stamping die set selectively moves to the surface of the automobile beam for trimming. The stamping die set includes a cross slide, a connecting seat, a first hydraulic cylinder and a second hydraulic cylinder. The cross slide is arranged on the side of the beam fixing device. One of the axes of the cross slide is parallel to the length direction of the automobile beam. The connecting seat is fixedly installed on the slider of the cross slide. The first hydraulic cylinder is fixedly installed at the upper end of the connecting seat. The second hydraulic cylinder is fixedly installed at the lower end of the connecting seat. The output shafts of the first hydraulic cylinder and the second hydraulic cylinder are arranged opposite to each other. The cross slide drives the connecting seat to move, thereby selectively moving the first hydraulic cylinder and the second hydraulic cylinder to the opposite sides of the automobile beam. The present invention can improve the problem of stress concentration during trimming.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts production and processing, and in particular to an automobile beam punching and angle trimming device and method. Background Art

[0002] During the production process of automobile beams, in order to meet the needs of later assembly, the surface of the beam needs to be punched. However, the punching process will change the microstructure of the hole position, thereby affecting the mechanical properties of the hole position and posing a threat to the stability of the automobile beam. In order to improve the stability of the automobile beam, the position after punching needs to be chamfered to ensure that the two sides of the punching position are symmetrical to prevent problems such as burrs and cracks.

[0003] The methods for chamfering holes in the existing technology mainly include countersinking and stamping. Due to the large size and weight of the automobile frame, the countersinking process is difficult to position, and is not conducive to continuous processing and has low efficiency. The conventional steps of stamping processing are to keep the workpiece movable and apply pressure through the hydraulic heads on both sides to achieve the purpose of chamfering. For the automobile frame, it is difficult to move it during the processing process. Therefore, the automobile frame needs to be fixed first and then stamped and chamfered. How to provide a device and method for stably chamfering the hole structure of the automobile frame has become a technical problem that needs to be solved urgently in this industry. Summary of the Invention

[0004] In view of this, the present invention proposes an automobile beam punching and angle trimming device and method.

[0005] The technical solution of the present invention is implemented as follows: The present invention provides a punching and angle trimming device for an automobile frame, comprising a frame fixing device and a stamping die group, wherein the frame fixing device is used to position and fix the automobile frame, and the stamping die group is arranged on one side of the frame fixing device, and the stamping die group selectively moves to the surface of the automobile frame for angle trimming, and the stamping die group comprises a cross slide, a connecting seat, a first hydraulic cylinder and a second hydraulic cylinder, the cross slide is arranged on the side of the frame fixing device, one of the axes of the cross slide is parallel to the length direction of the automobile frame, the connecting seat is fixedly mounted on the slider of the cross slide, the first hydraulic cylinder is fixedly mounted on the upper end of the connecting seat, and the second hydraulic cylinder is fixedly mounted on the lower end of the connecting seat, the output shafts of the first hydraulic cylinder and the second hydraulic cylinder are arranged opposite to each other, and the cross slide drives the connecting seat to move, thereby selectively moving the first hydraulic cylinder and the second hydraulic cylinder to the opposite sides of the automobile frame.

[0006] On the basis of the above technical solution, preferably, it also includes a linear module, which is fixedly mounted on the slider of the cross slide, the length direction of the linear module is perpendicular to the plane where the cross slide is located, and the connecting seat is fixedly mounted on the slider of the linear module.

[0007] On the basis of the above technical solution, preferably, a positioning camera is further included, wherein the positioning camera is fixedly mounted on the connecting seat and is used to detect the size of the through hole to be trimmed.

[0008] On the basis of the above technical solution, preferably, overflow valves are installed at the oil inlets of the first hydraulic cylinder and the second hydraulic cylinder.

[0009] More preferably, the beam fixing device includes a plurality of support seats arranged in a linear array, and at least one support seat is provided with limiting protrusions on both sides along the direction of the linear array.

[0010] On the basis of the above technical solution, preferably, there are no less than two stamping dies, and multiple stamping dies are arranged on one side or both sides along the length direction of the beam fixing device.

[0011] The present invention also provides a corner trimming method for an automobile beam punching and corner trimming device, comprising the following steps:

[0012] Step S1, placing the automobile beam limiter on the beam fixing device;

[0013] Step S2: driving the connecting seat to move via the cross slide, thereby driving the pressure heads on the output shafts of the first hydraulic cylinder and the second hydraulic cylinder to align with the hole to be trimmed;

[0014] Step S3: driving the pressure heads on the output shafts of the first hydraulic cylinder and the second hydraulic cylinder to press against both sides of the hole, and then applying pressure simultaneously to achieve angle trimming.

[0015] On the basis of the above technical solution, preferably, step S2 also includes driving the connecting seat to move through the linear module, thereby adjusting the pressure head on the output shaft of the first hydraulic cylinder or the second hydraulic cylinder to press against the hole opening to be trimmed, and then driving the pressure head on the output shaft of the first hydraulic cylinder or the second hydraulic cylinder that has not yet pressed against to press against the hole opening to be trimmed.

[0016] On the basis of the above technical solution, preferably, after step S1 and before step S2, it also includes determining by positioning the camera whether the aperture corresponds to the size of the pressure head of the corresponding stamping die. If so, enter step S2; otherwise, replace the stamping die and repeat the above operation.

[0017] The automobile beam punching and angle trimming equipment and method of the present invention have the following beneficial effects compared with the prior art:

[0018] (1) The present invention provides a punching and angle trimming device for automobile beams, which can perform angle trimming on the punched holes on the surface of the automobile beams while the automobile beams are fixed, and has good angle trimming uniformity, thereby overcoming the stress concentration problem and the misalignment problem caused by conventional single-sided pressure trimming.

[0019] (2) The entire device has a simple structure, and multiple stamping dies can perform multi-aperture and multi-station processing simultaneously, improving the efficiency of corner trimming and the adaptability to corner trimming of different automobile beams;

[0020] (3) The present invention also provides a corresponding method for punching and trimming the corners of automobile beams. The trimming method relies on the double-sided pressure of the method. The pressure on both sides is more uniform. The synchronous pressure method causes the least damage to the automobile beam. The punching of the trimmed corners will not cause the problem of unilateral stress concentration, and has a good protective effect on the automobile beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is an axonometric view of the automobile beam punching and angle trimming equipment of the present invention;

[0023] Figure 2 This is an axonometric view of the beam fixing device in the automobile beam punching and angle trimming equipment of the present invention;

[0024] Figure 3 This is a schematic diagram of the connection relationship between the punching module, the linear module and the positioning camera in the automobile beam punching and angle trimming equipment of the present invention.

[0025] In the figure: 1- beam fixing device, 11- support seat, 12- fiber protrusion, 2- stamping die, 21- cross slide, 22- connecting seat, 23- first hydraulic cylinder, 24- second hydraulic cylinder, 3- linear module, 4- positioning camera. DETAILED DESCRIPTION

[0026] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] like Figure 1 As shown, combined Figure 2-3The automobile beam punching and angle trimming equipment of the present invention includes a beam fixing device 1 and a stamping die 2. The beam fixing device 1 is used to position and fix the automobile beam. The stamping die 2 is arranged on one side of the beam fixing device 1. The stamping die 2 selectively moves to the surface of the automobile beam for angle trimming. The stamping die 2 includes a cross slide 21, a connecting seat 22, a first hydraulic cylinder 23 and a second hydraulic cylinder 24. The cross slide 21 is arranged on the side of the beam fixing device 1. One of the axes of the cross slide 21 is parallel to the length direction of the automobile beam. The connecting seat 22 is fixedly installed on the slider of the cross slide 21. The first hydraulic cylinder 23 is fixedly installed at the upper end of the connecting seat 22, and the second hydraulic cylinder 24 is fixedly installed at the lower end of the connecting seat. The output shafts of the first hydraulic cylinder 23 and the second hydraulic cylinder 24 are arranged opposite to each other. The cross slide 21 drives the connecting seat 22 to move, thereby selectively moving the first hydraulic cylinder 23 and the second hydraulic cylinder 24 to the opposite sides of the automobile beam.

[0028] Due to the large structure and heavy weight of automobile beams, they are difficult to move. Conventional punching and corner trimming generally involves moving the workpiece to adapt to the position of the punching and corner trimming equipment. Obviously, this is difficult to apply to the punching and corner trimming of automobile beams. If conventional corner trimming equipment is used to move to the position where the automobile beam needs to be trimmed, although the corner trimming process can be performed, the corner trimming device will inevitably apply uneven force at the punching position because the automobile beam is difficult to move, which will eventually lead to stress concentration at the punching position. During long-term use, the stress concentration area is prone to mechanical damage, affecting vehicle safety. In order to overcome the above problem, in the above embodiment of the present application, a cross slide 21 is used to adjust the position in the plane direction, so that the first hydraulic cylinder 23 and the second hydraulic cylinder 24 can be aligned with the punching hole to be processed for corner trimming. The use of two hydraulic cylinders for driving can effectively ensure that the two hydraulic cylinders apply balanced pressure on both sides of the punching hole to be trimmed, effectively avoiding the problem of stress concentration, thereby improving the quality of corner trimming.

[0029] In a specific embodiment, the linear module 3 is fixedly mounted on the slider of the cross slide 21 , the length direction of the linear module 3 is perpendicular to the plane of the cross slide 21 , and the connecting seat 22 is fixedly mounted on the slider of the linear module 3 .

[0030] In the above embodiment, the linear module 3 cooperates with the cross slide 21 to adjust the position of the punching module 2 in three directions, thereby spatially changing the position of the punching module 2. In order to adapt to the corner trimming of punching holes at different positions on the automobile frame, as a preferred embodiment, the output axis direction of the first hydraulic cylinder 23 and the second hydraulic cylinder 24 is parallel to the driving direction of the linear module 3. In this way, the distance between the first hydraulic cylinder 23 or the second hydraulic cylinder 24 and the automobile frame can be adjusted by driving the linear module 3, thereby adjusting the jacking.

[0031] In a specific embodiment, a positioning camera 4 is further included. The positioning camera 4 is fixedly mounted on the connecting seat 22 and is used to detect the size of the through hole to be trimmed.

[0032] In the above embodiment, the positioning camera 4 detects the size of the through hole and outputs a detection signal to an external control device. The control device determines whether the size meets the processing requirements of the corresponding stamping die 2 and whether it is aligned, thereby further controlling the stamping die 2 to perform corresponding movements. It should be understood that the corresponding external control device does not fall within the scope of protection of this application, and the external control device is a common technology in the prior art, so it will not be elaborated here. The positioning camera 4 can be a depth camera used in the prior art.

[0033] In a specific embodiment, overflow valves are installed at the oil inlets of the first hydraulic cylinder 23 and the second hydraulic cylinder 24 .

[0034] In the above embodiment, in order to overcome the problem of unbalanced pressure of the hydraulic cylinders at both ends, the present application sets a relief valve at the oil inlet of the hydraulic cylinder to control the working pressure of the hydraulic cylinder in different working stages. For example, in the initial holding stage, a lower pressure threshold is set for the relief valve of the oil inlet of the hydraulic cylinder that needs to be held, so as to avoid excessive pressure on the pressure head of the hydraulic cylinder, which may cause damage to the hydraulic cylinder or the automobile frame. After the first hydraulic cylinder is held, the other hydraulic cylinder is held, and the same scheme is adopted to operate. This can ensure that the hydraulic cylinders on both sides are tightened synchronously to avoid uneven force on both sides.

[0035] In a specific embodiment, the beam fixing device 1 includes a plurality of support seats 11 arranged in a linear array, and at least one support seat 11 is provided with limiting protrusions 12 on both sides along the linear array direction.

[0036] In the above embodiment, the plurality of support seats 11 support the main portion of the automobile frame, and the limiting protrusions 12 limit the posture of the automobile frame to prevent it from tipping over or shifting.

[0037] In a specific embodiment, there are no less than two stamping dies 2 , and multiple stamping dies 2 are arranged on one side or both sides along the length direction of the beam fixing device 1 .

[0038] In the above embodiment, multiple punching dies 2 are provided. On the one hand, the corners of punching holes of various sizes can be trimmed at the same time. On the other hand, the corners of multiple punching holes can be trimmed at the same time, thereby improving the corner trimming efficiency.

[0039] The present invention also provides a specific angle trimming method, comprising the following steps:

[0040] Step S1, placing the automobile beam limiter on the beam fixing device 1;

[0041] Step S2: The cross slide 21 drives the connecting seat 22 to move, thereby driving the pressure heads on the output shafts of the first hydraulic cylinder 23 and the second hydraulic cylinder 24 to align with the hole to be trimmed;

[0042] Step S3: drive the pressure heads on the output shafts of the first hydraulic cylinder 23 and the second hydraulic cylinder 24 to press against both sides of the hole, and then apply pressure simultaneously to achieve angle trimming.

[0043] In the above embodiment, after the automobile frame is fixed, the cross slide 21 is directly used to drive the corresponding hydraulic cylinder to move to the position of the hole to be trimmed, and the centering preparation before clamping is performed. After the centering is completed, the hydraulic cylinders on both sides are used for support, and then pressure is applied synchronously to trim the angle, thereby overcoming the stress concentration problem caused by asymmetric trimming.

[0044] In a specific embodiment, step S2 of the present invention also includes driving the connecting seat 22 to move through the linear module 3, thereby adjusting the pressure head on the output shaft of the first hydraulic cylinder 23 or the second hydraulic cylinder 24 to abut against the hole opening to be trimmed, and then driving the pressure head on the output shaft of the first hydraulic cylinder 23 or the second hydraulic cylinder 24 that has not yet abutted to abut against the hole opening to be trimmed.

[0045] In the above embodiment, after the hydraulic cylinder is aligned with the through hole to be trimmed, the first side is firstly supported by the linear module 3, and the corresponding connecting seat 22 is driven by the linear module 3 to move upward or downward, so that the pressure head on the output shaft of one of the hydraulic cylinders will first approach the corresponding punching hole until it is supported, and then the output shaft of the hydraulic cylinder on the other side is driven to move and support the other side.

[0046] In the above embodiment, more specifically, the linear module 3 performs a preliminary abutting process. For example, the linear module 3 drives the pressure head on the hydraulic cylinder on one side to approach the corresponding punching hole, and then drives the corresponding hydraulic cylinder output shaft to move. At this time, the overflow valve on the corresponding hydraulic cylinder is adjusted to control the abutting force. When the abutment is completed, the hydraulic cylinder on the other side is driven to move. At this time, the overflow valve on the hydraulic cylinder on the other side is also set to the same threshold, so that the abutting pressure of the hydraulic cylinders on both sides is the same. After completing the centering and abutment, you can prepare for the next step of pressure correction.

[0047] The above-mentioned pre-supporting method can also improve the stress concentration problem to a certain extent, thereby improving the quality of corner repair.

[0048] In a specific embodiment, after step S1 and before step S2, it also includes determining whether the aperture corresponds to the pressure head size of the corresponding stamping die 2 through the positioning camera 4. If so, enter step S2; otherwise, replace the stamping die 2 and repeat the above operation.

[0049] In the above embodiment, the positioning camera 4 is used to perform pre-size judgment and centering judgment, thereby improving the intelligence and production efficiency of the production line.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for trimming corners of an automobile beam punching and trimming device, characterized in that: The steps include: Step S1, placing the automobile frame limiter on the frame fixing device (1); Step S2, driving the connecting seat (22) to move through the cross slide (21), thereby driving the pressure heads on the output shafts of the first hydraulic cylinder (23) and the second hydraulic cylinder (24) to align with the hole to be trimmed; Step S3, driving the pressure heads on the output shafts of the first hydraulic cylinder (23) and the second hydraulic cylinder (24) to abut against both sides of the hole, and then applying pressure simultaneously to achieve the trimming process; Step S2 also includes driving the connecting seat (22) to move by the linear module (3), thereby adjusting the pressure head on the output shaft of the first hydraulic cylinder (23) or the second hydraulic cylinder (24) to abut against the hole opening to be trimmed, and then driving the pressure head on the output shaft of the first hydraulic cylinder (23) or the second hydraulic cylinder (24) that has not yet abutted to abut against the hole opening to be trimmed; wherein, The linear module (3) drives the pressure head on one side of the hydraulic cylinder to approach the corresponding punching hole, and then drives the corresponding hydraulic cylinder output shaft to move, and at this time adjusts the overflow valve on the corresponding hydraulic cylinder to control the force of the abutment. When the abutment is completed, the hydraulic cylinder on the other side is driven to move, and the overflow valve on the other side of the hydraulic cylinder is also set to the same threshold value, so that the abutment pressure of the hydraulic cylinders on both sides is the same. After the centering and abutment are completed, the next step of pressure adjustment is carried out; After step S1 and before step S2, the method further includes determining, by positioning the camera (4), whether the aperture corresponds to the size of the indenter of the corresponding punching die (2); if so, proceeding to step S2; if not, replacing the punching die (2) and repeating the above operation; The invention relates to an automobile beam punching and angle trimming device using the above-mentioned automobile beam punching and angle trimming device, comprising a beam fixing device (1), a punching die set (2), a linear die set (3) and a positioning camera (4); the beam fixing device (1) is used to position and fix the automobile beam; the punching die set (2) is arranged on one side of the beam fixing device (1); the punching die set (2) selectively moves to the surface of the automobile beam to perform angle trimming processing; the punching die set (2) comprises a cross slide (21), a connecting seat (22), a first hydraulic cylinder (23) and a second hydraulic cylinder (24); the cross slide (21) is arranged The cross slide (21) is arranged on the side of the beam fixing device (1), one of the axes of the cross slide (21) is parallel to the length direction of the automobile beam, the connecting seat (22) is fixedly mounted on the slider of the cross slide (21), the first hydraulic cylinder (23) is fixedly mounted on the upper end of the connecting seat (22), and the second hydraulic cylinder (24) is fixedly mounted on the lower end of the connecting seat, the output shafts of the first hydraulic cylinder (23) and the second hydraulic cylinder (24) are arranged opposite to each other, and the cross slide (21) drives the connecting seat (22) to move, thereby selectively moving the first hydraulic cylinder (23) and the second hydraulic cylinder (24) to opposite sides of the automobile beam; The linear module (3) is fixedly mounted on the slider of the cross slide (21), the length direction of the linear module (3) is perpendicular to the plane where the cross slide (21) is located, and the connecting seat (22) is fixedly mounted on the slider of the linear module (3); The positioning camera (4) is fixedly mounted on the connecting seat (22), and the positioning camera (4) is used to detect the size of the through hole to be trimmed; Overflow valves are installed at the oil inlets of the first hydraulic cylinder (23) and the second hydraulic cylinder (24); The beam fixing device (1) comprises a plurality of support seats (11) arranged in a linear array, and at least one support seat (11) is provided with limiting protrusions (12) on both sides along the linear array direction; There are no less than two punching die sets (2), and a plurality of punching die sets (2) are arranged on one side or both sides along the length direction of the beam fixing device (1).

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