A high-pressure positioning hole punching oil cylinder synchronous control device for a front cross beam of a front subframe

Abstract

The utility model discloses a front vice car frame front crossbeam high pressure positioning hole punching oil cylinder synchronous control device, including work table and two electric guide rails still include: mobile subassembly: the sliding connection in two electric guide rails, monitoring mechanism: be located the top of work table, monitoring mechanism includes two oil cylinder body, be equipped with two mobile guide rails on mobile subassembly, the piston rod of oil cylinder body is equipped with the guide frame. The utility model discloses a front vice car frame front crossbeam high pressure positioning hole punching oil cylinder synchronous control device has the position of the monitoring of multiple punches simultaneously, improves the consistency and accuracy of multiple punchings, has met the strict requirement of high accuracy processing of front vice car frame front crossbeam high pressure positioning hole, improves the assembly accuracy and overall performance effect of automobile parts.

Description

Technical Field

[0001] This utility model relates to the field of metal stamping equipment technology, and in particular to a synchronous control device for a high-pressure positioning hole punching cylinder in the front crossbeam of a front subframe. Background Technology

[0002] The synchronous control device for punching cylinders of high-pressure positioning holes in the front crossbeam of the front subframe is a hydraulic control system used in automobile manufacturing to ensure punching accuracy. It is mainly used in the internal high-pressure forming process to ensure that multiple punching cylinders operate synchronously under high pressure, thus guaranteeing the machining accuracy of the positioning holes (position, concentricity, etc.) and avoiding hole position deviation or workpiece deformation caused by asynchrony.

[0003] However, in the existing synchronous control device for the high-pressure positioning hole punching cylinder in the front crossbeam of the front subframe, some guide rails are prone to local bending, loosening, or increased clearance due to long-term impact loads or workpiece deformation reaction forces. This may cause piston rod movement to wobble and punching position to shift, thus affecting hole position accuracy and workpiece quality. If the piston rod and punch of one or more cylinders are not detected and repaired in time, multiple punches may not be synchronized, and punching accuracy may decrease, and the defect rate may increase.

[0004] For example, during long-term processing, the workpiece generates a large deformation reaction force on the punch. At the same time, some guide rails in the device are subjected to the impact load brought by the reciprocating motion of the piston rod for a long time. The piston rods of several cylinders and the punches may become misaligned, which may disrupt the synchronization between multiple punches. During stamping, some punches contact the workpiece first and some punches contact the workpiece later, resulting in inconsistent punching depth and shape, which seriously affects the punching quality. Utility Model Content

[0005] This utility model discloses a synchronous control device for high-pressure positioning hole punching cylinders in the front crossbeam of the front subframe. The aim is to solve the problem in existing synchronous control devices for high-pressure positioning hole punching cylinders in the front crossbeam of the front subframe, where some guide rails are prone to local bending, loosening, or increased clearance due to long-term impact loads or workpiece deformation reaction forces. This can lead to piston rod movement wobbling and punching position deviation, thus affecting hole position accuracy and workpiece quality. If the piston rod and punch deviation of one or more cylinders is not detected and repaired in time, it may cause multiple punches to fail to synchronize, resulting in decreased punching accuracy and increased defect rate.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An internal high-pressure positioning hole punching oil cylinder synchronous control device for the front cross beam of a front subframe, comprising a workbench and two electric guide rails, and further comprising: - A moving component: slidably connected to the two electric guide rails; - A monitoring mechanism: located above the workbench, the monitoring mechanism includes two oil cylinder bodies, two moving guide rails are provided on the moving component, a guiding frame is provided on the piston rod of the oil cylinder body, and the guiding frame is slidably connected to the inner wall of the moving guide rail. Fixed frames are provided on both outer walls of the moving guide rail, two laser rangefinders are provided at one end of the fixed frame, and an alarm is provided on the top outer wall of the fixed frame. The alarm is electrically connected to the laser rangefinder. The oil cylinder body is fixedly connected with a punch through the piston rod, and the laser beam of the laser rangefinder vertically irradiates the outer wall of the punch.

[0008] With the above technical solution, it is possible to monitor the positions of multiple punches simultaneously. Once an asynchronous situation is detected, an alarm can be immediately issued and corresponding measures can be taken, ensuring the consistency and accuracy of multiple punching holes, meeting the strict requirements of high-precision machining of the internal high-pressure positioning holes of the front cross beam of the front subframe, and ensuring the assembly accuracy and overall performance of automotive parts. Specifically, the two electric guide rails drive the moving component (including the oil cylinder body and the punch) to move along a preset path to the position where the workpiece is to be punched. The moving guide rails on the moving component provide longitudinal sliding freedom for the piston rod of the oil cylinder body, ensuring that the punch can be vertically pressed down to complete the punching action. Adjust the angle of the laser rangefinder so that its laser beam vertically irradiates the detection surface of the guiding frame (error ≤ 0.1°), and measure the distance from the guiding frame in real time. In the initial state where the punch is not moving, the reference distance D from the laser rangefinder to the punch is recorded as the reference value for subsequent monitoring. During the punching process, if the punch deviates due to vibration, guide rail error or workpiece deformation, the guiding frame drives the detection surface of the laser rangefinder to move, resulting in a change in the measured distance d: if d < D, it indicates that the punch tilts to this side, triggering the alarm connected to the corresponding laser rangefinder to give an audible and visual prompt. If the d difference exceeds the threshold (such as ∣d_left - d_right∣ > 0.1 mm), it is determined as a serious deviation and the machine is immediately stopped for protection.

[0009] In a preferred solution, the moving component includes two connecting blocks and two supporting blocks. The two connecting blocks are slidably connected to one of the electric guide rails, the two supporting blocks are slidably connected to the other electric guide rail, and the same mounting frame is provided on one outer wall of the connecting block and the supporting block. The moving guide rail is fixedly installed on the mounting frame.

[0010] In this solution, the distance between adjacent two oil cylinder bodies can be adjusted according to the production and processing requirements, so as to adjust the distance between adjacent two punching holes.

[0011] As described above, a synchronous control device for a high-pressure positioning hole punching cylinder in the front crossbeam of a front subframe includes a worktable and two electric guide rails, and further includes: a moving component slidably connected to the two electric guide rails; a monitoring mechanism located above the worktable, the monitoring mechanism including two cylinder bodies, the moving component having two moving guide rails, the piston rod of the cylinder body having a guide frame, the guide frame being slidably connected to the inner wall of the moving guide rail, both outer walls of the moving guide rail having fixed frames, one end of the fixed frame having two laser rangefinders, the top outer wall of the fixed frame having an alarm, the alarm being electrically connected to the laser rangefinders, the cylinder body being fixedly connected to a punch via the piston rod, and the laser beam of the laser rangefinder vertically irradiating the outer wall of the punch. The synchronous control device for punching high-pressure positioning holes in the front crossbeam of the front subframe provided by this utility model can simultaneously monitor the position of multiple punches, improve the consistency and accuracy of multiple punches, meet the strict requirements of high-precision machining of high-pressure positioning holes in the front crossbeam of the front subframe, and improve the assembly accuracy and overall performance of automotive parts. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a hydraulic cylinder synchronous control device for punching high-pressure positioning holes in the front crossbeam of the front subframe, as proposed in this utility model.

[0013] Figure 2 This is a cross-sectional view of the monitoring mechanism of the high-pressure positioning hole punching cylinder synchronous control device in the front crossbeam of the front subframe proposed in this utility model.

[0014] Figure 3 This is a rear view of the moving component of a synchronous control device for a high-pressure positioning hole punching cylinder in the front crossbeam of a front subframe, as proposed in this utility model.

[0015] In the attached diagram: 1. Workbench; 2. Electric guide rail; 3. Connecting frame; 4. Connecting block; 5. Guide frame; 6. Hydraulic cylinder body; 7. Punch; 8. Fixing frame; 9. Laser rangefinder; 10. Alarm; 11. Support block; 12. Moving guide rail; 13. Mounting frame. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0017] The present invention discloses a synchronous control device for high-pressure positioning hole punching cylinders in the front crossbeam of a front subframe. This device is mainly used in existing synchronous control devices for high-pressure positioning hole punching cylinders in the front crossbeam of a front subframe. Some guide rails are prone to local bending, loosening, or increased clearance due to long-term impact loads or workpiece deformation reaction forces. This may cause piston rod movement to wobble and punching position to shift, thereby affecting hole position accuracy and workpiece quality. If the piston rod and punch offset of one or more cylinders are not detected and repaired in time, it may cause multiple punches to be out of sync, resulting in decreased punching accuracy and increased defect rate.

[0018] Reference Figure 1 and Figure 2 A synchronous control device for high-pressure positioning hole punching cylinders in the front crossbeam of a front subframe includes a workbench 1 and two electric guide rails 2, and further includes: a moving component slidably connected to the two electric guide rails 2; a monitoring mechanism located above the workbench 1, the monitoring mechanism including two cylinder bodies 6, two moving guide rails 12 on the moving component, a guide frame 5 on the piston rod of the cylinder body 6, the guide frame 5 slidably connected to the inner wall of the moving guide rail 12, a fixing frame 8 on both outer walls of the moving guide rail 12, two laser rangefinders 9 on one end of the fixing frame 8, an alarm 10 on the top outer wall of the fixing frame 8, the alarm 10 and the laser rangefinders 9 being electrically connected, a punch 7 fixedly connected to the cylinder body 6 via the piston rod, and the laser beam of the laser rangefinder 9 vertically irradiating the outer wall of the punch 7.

[0019] Among them, four laser rangefinders 9 are symmetrically distributed about the center line of the movement trajectory of the punch 7. Two adjacent laser rangefinders 9 are arranged vertically in a horizontal plane perpendicular to the worktable 1. The data of the symmetrically arranged rangefinders can be mutually calibrated to eliminate systematic deviations caused by installation errors of the moving guide rail 12 or unevenness of the workpiece surface. For example, if the readings of the two rangefinders on the left are both too high and the readings of the two rangefinders on the right are both too low, the system can determine that the guide rail is tilted as a whole, rather than the punch 7 itself is offset, thereby avoiding false alarms.

[0020] In the specific implementation process, the cross-section of the fixing frame 8 is an "L" - shaped structure, and the longitudinal section at one end of the fixing frame 8 is a "U" - shaped structure. The opening direction of the "U" - shaped structure faces the guiding frame 5 and is used to install the laser rangefinder 9.

[0021] In the embodiment, one of the electric guide rails 2 is located on the outer wall of the bottom of the workbench 1. Connecting frames 3 are provided on the outer walls of one side of the two electric guide rails 2 near the outer walls on both sides. The connecting frames 3 rigidly connect the outer walls on the side of the two electric guide rails 2 to the outer wall of the bottom of the workbench 1, forming a "frame - type support structure" to suppress the lateral vibration of the electric guide rails 2 during the stamping process.

[0022] Specifically, the two electric guide rails 2 drive the moving component including the oil cylinder body 6 and the punch 7 to move along a preset path to the position where the workpiece is to be stamped. The moving guide rail 12 on the moving component provides longitudinal sliding freedom for the piston rod of the oil cylinder body 6, ensuring that the punch 7 can press vertically to complete the stamping action. Four laser rangefinders 9 are symmetrically arranged in two groups with the center line of the punch 7 as the axis, located on both sides of the fixing frame 8. Adjust the angle of the laser rangefinders 9 so that the laser beam is perpendicular to the detection surface of the guiding frame 5 with an error ≤ 0.1°. The distance from the laser rangefinders 9 to the guiding frame 5 is measured in real - time. In the initial state where the punch 7 is not moving, the reference distance D from the laser rangefinder 9 to the punch 7 is recorded as a reference value for subsequent monitoring. During the stamping process, if the punch 7 deviates due to vibration, rail error or workpiece deformation, the guiding frame 5带动 the detection surface of the laser rangefinder 9 to move, resulting in a change in the measured distance d: If d < D, it indicates that the punch 7 tilts towards this side, triggering the alarm 10 connected to the corresponding laser rangefinder 9 to give an audible and visual prompt. If the d difference exceeds a threshold value such as ∣d_left - d_right∣ > 0.1 mm, it is determined as a serious deviation and the machine is immediately stopped for protection. This device can monitor the positions of multiple punches 7 simultaneously. Once a non - synchronous situation is found, an alarm can be immediately issued and corresponding measures can be taken, ensuring the consistency and accuracy of multiple punching holes, meeting the strict requirements for high - precision machining of the internal high - pressure positioning holes of the front cross - member of the front sub - frame, and improving the assembly accuracy and overall performance of automotive parts.

[0023] Refer to Figure 1 and Figure 3 In a preferred implementation manner, the moving component includes two connecting blocks 4 and two supporting blocks 11. The two connecting blocks 4 are slidably connected to one of the electric guide rails 2, and the two supporting blocks 11 are slidably connected to the other electric guide rail 2. An installation frame 13 is provided on the outer wall of one side of the connecting block 4 and the supporting block 11, and the moving guide rail 12 is fixedly installed on the installation frame 13.

[0024] It should be noted that the position of the hydraulic cylinder body 6 can be fixed on the electric guide rail 2 by a locking assembly (existing equipment, not shown in the attached figure). In the fields of industrial automation and mechanical manufacturing, locking assemblies are common components used to fix the position of objects on guide rails or other moving parts to prevent them from moving accidentally. For example, as a safety device, the guide rail lock is mainly used for safety locking during the operation of machine tools or other industrial equipment. This design makes it easy to adjust the distance between two adjacent hydraulic cylinder bodies 6 according to production and processing needs, thereby adjusting the distance between two adjacent drilling holes.

[0025] The worktable 1 is mounted on the top outer wall of one of the electric guide rails 2. The tops of the two support blocks 11 are slidably connected to the bottom outer wall of the worktable 1. The bottom outer wall of the connecting block 4 is provided with a fixing plate. The cylinder body 6 is fixedly mounted on the top outer wall of the fixing plate by bolts, and the piston rod of the cylinder body 6 passes through the bottom outer wall of the fixing plate. In the specific implementation, a guide sleeve is provided through the bottom outer wall of the fixing plate for the piston rod of the cylinder body 6. The clearance between the guide sleeve and the piston rod is ≤0.05mm, which is used to limit the radial sway of the piston rod. The support block 11 provides reliable support for the worktable 1, the fixing plate ensures the stable installation of the cylinder body 6, and the cylinder body 6 provides the necessary power. The three work together to effectively enhance the stability of the entire worktable 1 system, reduce the impact of vibration, impact and other factors on processing accuracy and equipment life, and ensure the stability and reliability of the equipment during long-term operation.

[0026] Reference Figure 2 In a preferred embodiment, both the connecting block 4 and the support block 11 are "I" shaped structures. The upper and lower flanges can effectively resist bending stress, while the middle web plate plays the role of connecting and transmitting shear force. When the connecting block 4 and the support block 11 bear the load transmitted by the workbench 1 and related components, this structure can significantly improve its bending stiffness, reduce the risk of structural damage caused by bending deformation, and ensure that the equipment maintains stable structural performance during long-term operation.

[0027] Working principle: During use, two electric guide rails 2 drive the moving component including the oil cylinder body 6 and the punch 7 to move along a preset path to the position where the workpiece is to be punched. The number of oil cylinder bodies 6 can be more than 2, which can be increased according to specific actual punching requirements. The moving guide rail 12 on the moving component provides longitudinal sliding freedom for the piston rod of the oil cylinder body 6, ensuring that the punch 7 can press down vertically to complete the punching action. Four laser rangefinders 9 are symmetrically arranged in two groups with the center line of the punch 7 as the axis on both sides of the fixed frame 8. Adjust the angle of the laser rangefinders 9 so that the laser beam is perpendicular to the detection surface of the guide frame 5 with an error ≤ 0.1°. The distance from the laser rangefinders 9 to the guide frame 5 is measured in real time. In the initial state where the punch 7 is not moving, the reference distance D from the laser rangefinders 9 to the punch 7 is recorded as the reference value for subsequent monitoring. During the punching process, if the punch 7 deviates due to vibration, guide rail error or workpiece deformation, the guide frame 5 drives the detection surface of the laser rangefinders 9 to move, resulting in a change in the measured distance d: If d < D, it indicates that the punch 7 tilts to this side, triggering the alarm 10 connected to the corresponding laser rangefinder 9 to give an audible and visual prompt. If the difference in d exceeds the threshold, such as |d_left - d_right| > 0.1 mm, it is determined as a serious deviation and the machine is immediately stopped for protection.

[0028] As described above, it is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. The substitution may be the substitution of some structures, devices, method steps, or a complete technical solution. Any equivalent substitution or change made according to the technical solution of the present utility model and its inventive concept shall be covered within the protection scope of the present utility model.

Claims

1. A synchronous control device for a high-pressure positioning hole punching cylinder in the front crossbeam of a front subframe, comprising a worktable (1) and two electric guide rails (2), characterized in that, It also includes: a moving component: slidably connected to the two electric guide rails (2); a monitoring mechanism: located above the workbench (1), the monitoring mechanism includes two cylinder bodies (6), the moving component is provided with two moving guide rails (12), the piston rod of the cylinder body (6) is provided with a guide frame (5), the guide frame (5) is slidably connected to the inner wall of the moving guide rail (12), both outer walls of the moving guide rail (12) are provided with a fixed frame (8), one end of the fixed frame (8) is provided with two laser rangefinders (9), the top outer wall of the fixed frame (8) is provided with an alarm (10), the alarm (10) is electrically connected to the laser rangefinder (9), the cylinder body (6) is fixedly connected to a punch (7) through the piston rod, and the laser beam of the laser rangefinder (9) is vertically irradiated on the outer wall of the punch (7).

2. The synchronous control device for the high-pressure positioning hole punching cylinder in the front crossbeam of the front subframe according to claim 1, characterized in that, The four laser rangefinders (9) are symmetrically distributed about the center line of the movement trajectory of the punch (7), and two adjacent laser rangefinders (9) are arranged vertically in a horizontal plane perpendicular to the worktable (1).

3. The synchronous control device for the high-pressure positioning hole punching cylinder in the front crossbeam of the front subframe according to claim 2, characterized in that, The cross-section of the fixing frame (8) is an "L" shaped structure, and the longitudinal section of one end of the fixing frame (8) is a "U" shaped structure.

4. The synchronous control device for the high-pressure positioning hole punching cylinder in the front crossbeam of the front subframe according to claim 3, characterized in that, One of the electric guide rails (2) is located on the bottom outer wall of the workbench (1), and a connecting frame (3) is provided on one side of the outer wall of both electric guide rails (2) near the outer walls on both sides.

5. The synchronous control device for the high-pressure positioning hole punching cylinder in the front crossbeam of the front subframe according to claim 1, characterized in that, The moving component includes two connecting blocks (4) and two supporting blocks (11). The two connecting blocks (4) are slidably connected to one of the electric guide rails (2), and the two supporting blocks (11) are slidably connected to the other electric guide rail (2). The outer wall of one side of the connecting block (4) and the supporting block (11) is provided with the same mounting bracket (13), and the moving guide rail (12) is fixedly installed on the mounting bracket (13).

6. The synchronous control device for the high-pressure positioning hole punching cylinder in the front crossbeam of the front subframe according to claim 5, characterized in that, The workbench (1) is installed on the top outer wall of one of the electric guide rails (2), the top ends of the two support blocks (11) are slidably connected to the bottom outer wall of the workbench (1), the bottom outer wall of the connecting block (4) is provided with a fixing plate, the cylinder body (6) is fixedly installed on the top outer wall of the fixing plate by bolts, and the piston rod of the cylinder body (6) passes through the bottom outer wall of the fixing plate.

7. The synchronous control device for the high-pressure positioning hole punching cylinder in the front crossbeam of the front subframe according to claim 5, characterized in that, Both the connecting block (4) and the supporting block (11) are "I" shaped structures.

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