A machining device for a gearbox of a straightening machine

Abstract

This invention belongs to the field of gearbox machining technology for tension leveling machines, specifically relating to a machining device for a gearbox of a tension leveling machine. The device includes a worktable, a boring mechanism, and an adaptive clamping unit. The worktable has multiple locating pin holes and multiple locating keyways for positioning the bottom of the gearbox. The boring mechanism includes a fixed frame and an execution component. The fixed frame is positioned above the worktable, and the execution component is mounted on the fixed frame for boring the output shaft hole of the gearbox. The adaptive clamping unit includes multiple clamping mechanisms symmetrically arranged on the left and right sides of the worktable for clamping the gearbox and dynamically adjusting the clamping force. Compared to traditional pressure plate clamps, this invention achieves stable and reliable clamping of irregularly shaped gearboxes for tension leveling machines. The force at each clamping point is adjustable, avoiding elastic deformation of the gearbox body caused by excessive local clamping force, and significantly improving machining accuracy.

Description

Technical Field

[0001] This invention belongs to the field of gearbox processing technology for tension leveling machines, and specifically relates to a processing device for a gearbox of a tension leveling machine. Background Technology

[0002] The straightening machine is a core piece of equipment in a steel plant's continuous casting production line, used for drawing and straightening cast billets. As the core component of the straightening machine's power transmission, the gearbox's machining accuracy directly determines the machine's transmission performance, service life, and the quality of the continuously cast billets. Straightening machine gearboxes typically feature a compact structure, complex transmission chain, and uneven wall thickness. They internally house multiple transmission components (such as bevel gear sets and planetary gear trains), requiring extremely high positional accuracy and coaxiality between the shafts and holes.

[0003] Currently, when machining the output shaft hole of the gearbox of a straightening machine, vises or pressure plate clamps are commonly used to clamp the gearbox. However, due to the uneven wall thickness of the gearbox, using general-purpose clamps may cause excessive stress on the thinner parts of the gearbox, resulting in elastic deformation. When the clamping force is unloaded after machining, the gearbox springs back, causing distortion of the machining dimensions.

[0004] Therefore, there is an urgent need for a processing device for the gearbox of a tension leveling machine to solve the above problems. Summary of the Invention

[0005] In view of the above-mentioned defects in the prior art, the present invention provides a processing device for a gearbox of a tension leveling machine, including a worktable, a boring mechanism and an adaptive clamping unit. The worktable is provided with multiple positioning pin holes and multiple positioning keyways for positioning the bottom of the gearbox of the tension leveling machine.

[0006] The boring mechanism includes a fixed frame and an execution component. The fixed frame is located above the worktable, and the execution component is located on the fixed frame. It is used to bore the output shaft hole of the gearbox of the straightening machine.

[0007] The adaptive clamping unit includes multiple clamping mechanisms symmetrically arranged on the left and right sides of the worktable, which are used to clamp the gearbox of the straightening machine and can dynamically adjust the clamping force.

[0008] Preferably, the clamping mechanism includes a support rod, a clamping arm, and a drive assembly. The support rod is vertically fixed to one side of the worktable. The middle part of the clamping arm is hinged to the top of the support rod. The end of the clamping arm closer to the worktable is the clamping end, and the end farther from the worktable is the drive end. The drive assembly clamps the gearbox of the straightening machine by driving the drive end of the clamping arm.

[0009] Preferably, the drive assembly includes a drive cylinder, a horizontal slide rail, and a wedge-shaped slider. The drive cylinder is arranged laterally, the horizontal slide rail is arranged between the drive cylinder and the support rod, the bottom of the wedge-shaped slider is slidably connected to the horizontal slide rail, the upper surface of the wedge-shaped slider is provided with an inclined guide surface, and the lower end of the inclined guide surface is close to the clamping arm. The wedge-shaped slider is fixedly connected to the piston rod of the drive cylinder.

[0010] Preferably, the clamping end of the clamping arm is provided with an anti-slip protective pad to prevent the clamping end of the clamping arm from directly and rigidly contacting the gearbox of the straightening machine, thus providing a buffer protection for the gearbox of the straightening machine; the driving end of the clamping arm is provided with a roller, and the roller is slidably connected to the inclined guide surface of the wedge-shaped slider.

[0011] Preferably, the clamping mechanism is further equipped with a control system, which includes a microcontroller, a pressure sensor, and a pressure regulating valve. The microcontroller can be placed in an unused area around the worktable, preferably without affecting the processing operation. The pressure sensor is located between the clamping end of the clamping arm and the anti-slip protective pad, and is used to monitor the clamping force of the clamping end of the clamping arm against the gearbox of the straightening machine in real time. The pressure regulating valve is located on the gas pipeline of the drive cylinder and is used to adjust the air pressure of the drive cylinder. Both the pressure sensor and the pressure regulating valve are electrically connected to the microcontroller.

[0012] Preferably, the weight of the roller is greater than the sum of the weights of the anti-slip protective pad and the pressure sensor. It should be noted that the total weight of the driving end of the clamping arm is greater than the total weight of the clamping end. After the external driving force is lost, the clamping end of the clamping arm rises under the action of gravity, and the driving end falls back.

[0013] Preferably, multiple locating pin holes and multiple locating keyways together constitute a locating area, and this locating area matches the contour of the bottom of the gearbox of the tension leveling machine.

[0014] Preferably, the fixing frame includes an upright and a crossbar fixed to the top of the upright.

[0015] Preferably, the actuating components include an XY-axis linear slide, an electric actuator, and a stepper motor. The XY-axis linear slide is mounted on the bottom of the crossbar, and a movable slide is provided at the bottom of the XY-axis linear slide. The electric actuator is fixedly located below the movable slide, and its free end extends downward and is fixedly mounted on a mounting plate. The stepper motor is fixedly located below the mounting plate, and a boring tool is mounted on the output shaft of the stepper motor. Specifically, the XY-axis linear slide is an XY-axis linear ball bearing type electric slide.

[0016] This invention also includes other components that enable the processing apparatus of a tension leveling machine gearbox to function properly, all of which are conventional techniques in the art. Furthermore, any devices or components not specified in this invention employ conventional techniques in the art.

[0017] The working principle of this invention is as follows: During processing, the gearbox blank of the straightening machine is placed on the worktable and initially positioned using the locating pin holes and locating keyways. Then, the adaptive clamping unit is activated, driving the cylinder to extend the piston rod, which in turn drives the wedge slider to move towards the worktable. The inclined guide surface pushes the roller upwards, thereby causing the clamping arm to rotate around the hinge point. This causes the clamping end of the clamping arm to press downwards against the gearbox blank. A pressure sensor monitors the clamping force in real time and transmits the detection signal to the microcontroller. After analyzing and processing the detection signal, the microcontroller sends a control signal to the pressure regulating valve of the driving cylinder. The air pressure of each drive cylinder is adjusted to keep the clamping force at each clamping point within the corresponding set range. Then, the positions of the electric push rod and the stepper motor are adjusted by the XY axis linear slide so that the stepper motor is directly above the output shaft hole of the box blank. Then, the electric push rod extends its free end, lowers the stepper motor, and drives the boring tool to rotate to bore the output shaft hole of the box blank. After the machining is completed, the electric push rod retracts its free end, raises the stepper motor, and the control system controls the drive cylinders of each drive component to depressurize. Each clamping arm automatically resets under the action of gravity and the machined box blank is removed.

[0018] The beneficial effects of this invention are as follows: This invention adopts an adaptive clamping unit, which efficiently converts the horizontal thrust of the drive cylinder into the vertical downward pressure of the clamping arm through a transmission method of wedge slider and roller cooperation. The force transmission path is short and the efficiency is high. At the same time, a pressure sensor is set between the anti-slip protective pad and the clamping arm to realize real-time monitoring and dynamic equalization adjustment of the clamping force. Compared with the traditional pressure plate type clamp, this invention can achieve stable and reliable clamping of the gearbox of the irregular straightening machine. The force of each clamping point is adjustable, avoiding elastic deformation of the gearbox caused by excessive local clamping force, and significantly improving the processing accuracy. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a partial structural diagram of the clamping end of the clamping arm of the present invention.

[0022] Figure 3 This is the electrical schematic diagram of the control system of the present invention.

[0023] Figure 4 This is a schematic diagram of the processing device for a tension leveling machine gearbox provided in an embodiment of the present invention during actual use.

[0024] In the diagram: 1. Worktable, 2. Fixture, 3. XY-axis linear ball bearing electric slide, 4. Electric push rod, 5. Stepper motor, 6. Mounting plate, 7. Boring tool, 8. Support rod, 9. Clamping arm, 10. Drive cylinder, 11. Horizontal slide rail, 12. Wedge slider, 13. Anti-slip protective pad, 14. Roller, 15. Pressure sensor, 16. Box blank. Detailed Implementation

[0025] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely illustrative and is not intended to limit the scope of the invention. Any modifications, equivalent substitutions, or improvements made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the scope of protection of the present invention.

[0026] Example like Figure 1-4 As shown, this embodiment of the invention provides a processing device for a gearbox of a straightening machine, including a worktable 1, a boring mechanism and an adaptive clamping unit. The worktable 1 is provided with multiple positioning pin holes and multiple positioning keyways. The multiple positioning pin holes and multiple positioning keyways together constitute a positioning area, and the positioning area matches the contour of the bottom of the gearbox of the straightening machine, for positioning the bottom of the gearbox of the straightening machine.

[0027] The boring mechanism includes a fixed frame 2 and an execution component. The fixed frame 2 is located above the worktable 1 and includes a vertical rod and a horizontal bar fixed to the top of the vertical rod. The execution component is mounted on the fixed frame 2 and is used to bore the output shaft hole of the gearbox of the straightening machine. The execution component includes an XY-axis linear ball bearing electric slide 3, an electric push rod 4, and a stepper motor 5. The XY-axis linear ball bearing electric slide 3 is mounted at the bottom of the horizontal bar. The bottom of the XY-axis linear ball bearing electric slide 3 is provided with a movable slide. The electric push rod 4 is fixedly mounted below the movable slide. The free end of the electric push rod 4 extends downward and is fixed with a mounting plate 6. The stepper motor 5 is fixedly mounted below the mounting plate 6. A boring tool 7 is mounted on the output shaft of the stepper motor 5.

[0028] The adaptive clamping unit includes multiple clamping mechanisms symmetrically arranged on the left and right sides of the worktable 1, which are used to clamp the gearbox of the straightening machine and can dynamically adjust the clamping force.

[0029] The clamping mechanism includes a support rod 8, a clamping arm 9, a drive assembly, and a control system. The support rod 8 is vertically fixed to one side of the worktable 1. The middle part of the clamping arm 9 is hinged to the top of the support rod 8. The end of the clamping arm 9 closer to the worktable 1 is the clamping end, and the end farther away from the worktable 1 is the drive end.

[0030] The drive assembly includes a drive cylinder 10, a horizontal slide rail 11, and a wedge-shaped slider 12. The drive cylinder 10 is arranged horizontally, the horizontal slide rail 11 is arranged between the drive cylinder 10 and the support rod 8, the bottom of the wedge-shaped slider 12 is slidably connected to the horizontal slide rail 11, the upper surface of the wedge-shaped slider 12 is provided with an inclined guide surface, and the lower end of the inclined guide surface is close to the clamping arm 9. The wedge-shaped slider 12 is fixedly connected to the piston rod of the drive cylinder 10.

[0031] In addition, the clamping end of the clamping arm 9 is provided with an anti-slip protective pad 13 to prevent the clamping end of the clamping arm 9 from directly and rigidly contacting the gearbox of the straightening machine, thus providing a buffer protection for the gearbox of the straightening machine; the driving end of the clamping arm 9 is provided with a roller 14, and the roller 14 is slidably connected to the inclined guide surface of the wedge slider 12.

[0032] The control system includes a microcontroller, a pressure sensor 15, and a pressure regulating valve. The microcontroller can be placed in an unused area around the workbench 1, preferably without affecting the processing operation. The pressure sensor 15 is located between the clamping end of the clamping arm 9 and the anti-slip protective pad 13, and is used to monitor the clamping force of the clamping end of the clamping arm 9 against the gearbox of the straightening machine in real time. The pressure regulating valve is located on the gas pipeline of the drive cylinder 10 and is used to adjust the air pressure of the drive cylinder 10. Both the pressure sensor 15 and the pressure regulating valve are electrically connected to the microcontroller.

[0033] It should be noted that the weight of the roller 14 is greater than the sum of the weights of the anti-slip protective pad 13 and the pressure sensor 15. Thus, the total weight of the driving end of the clamping arm 9 is greater than the total weight of the clamping end. After the external driving force is lost, the clamping end of the clamping arm 9 rises and the driving end falls back under the action of gravity.

[0034] The working principle of this invention is as follows: During processing, the gearbox blank 16 of the straightening machine is placed on the worktable 1 and initially positioned using the positioning pin hole and positioning keyway. Then, the adaptive clamping unit is activated, driving the cylinder 10 to extend the piston rod, which in turn drives the wedge slider 12 to move towards the worktable 1. The inclined guide surface pushes the roller 14 upward, thereby causing the clamping arm 9 to rotate around the hinge point. This causes the clamping end of the clamping arm 9 to press down on the gearbox blank 16. The pressure sensor 15 monitors the clamping force in real time and transmits the detection signal to the microcontroller. After analyzing and processing the detection signal, the microcontroller sends a control signal to the pressure regulating valve of the driving cylinder 10 to dynamically adjust the various... The air pressure of the drive cylinder 10 is used to keep the clamping force of each clamping point within the corresponding set range. Then, the positions of the electric push rod 4 and the stepper motor 5 are adjusted by the XY axis linear ball bearing electric slide 3 so that the stepper motor 5 is just above the output shaft hole of the box blank 16. Then, the electric push rod 4 extends its free end, lowers the stepper motor 5, and the stepper motor 5 drives the boring tool 7 to rotate to perform boring on the output shaft hole of the box blank 16. After the machining is completed, the electric push rod 4 retracts its free end, raises the stepper motor 5, and the control system controls the drive cylinder 10 of each drive component to depressurize. Each clamping arm 9 automatically resets under the action of gravity and removes the machined box blank 16.

[0035] The embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A machining apparatus for a gearbox of a straightening machine, comprising a worktable, a boring mechanism, and an adaptive clamping unit, characterized in that: The workbench is equipped with multiple positioning pin holes and multiple positioning keyways for positioning the bottom of the gearbox of the straightening machine; The boring mechanism includes a fixed frame and an execution component. The fixed frame is located above the worktable, and the execution component is located on the fixed frame. It is used to perform boring operations on the output shaft hole of the gearbox of the straightening machine. The adaptive clamping unit includes multiple clamping mechanisms symmetrically arranged on the left and right sides of the worktable, which are used to clamp the gearbox of the straightening machine and can dynamically adjust the clamping force.

2. The processing apparatus for the gearbox of the tension leveling machine according to claim 1, characterized in that: The clamping mechanism includes a support rod, a clamping arm, and a drive assembly. The support rod is vertically fixed to one side of the worktable. The middle part of the clamping arm is hinged to the top of the support rod. The end of the clamping arm closer to the worktable is the clamping end, and the end farther from the worktable is the drive end. The drive assembly clamps the gearbox of the straightening machine by driving the drive end of the clamping arm.

3. The processing apparatus for the gearbox of the tension leveling machine according to claim 2, characterized in that: The drive assembly includes a drive cylinder, a horizontal slide rail, and a wedge-shaped slider. The drive cylinder is arranged horizontally, the horizontal slide rail is located between the drive cylinder and the support rod, the bottom of the wedge-shaped slider is slidably connected to the horizontal slide rail, the upper surface of the wedge-shaped slider is provided with an inclined guide surface, and the lower end of the inclined guide surface is close to the clamping arm. The wedge-shaped slider is fixedly connected to the piston rod of the drive cylinder.

4. The processing apparatus for the gearbox of the tension leveling machine according to claim 3, characterized in that: The clamping end of the clamping arm is equipped with an anti-slip protective pad, and the driving end of the clamping arm is equipped with a roller, which is slidably connected to the inclined guide surface of the wedge slider.

5. The processing apparatus for the gearbox of the tension leveling machine according to claim 4, characterized in that: The clamping mechanism is also equipped with a control system, which includes a microcontroller, a pressure sensor, and a pressure regulating valve. The pressure sensor is located between the clamping end of the clamping arm and the anti-slip protective pad to monitor the clamping force of the clamping end of the clamping arm against the gearbox of the straightening machine in real time. The pressure regulating valve is located on the gas pipeline of the drive cylinder to adjust the air pressure of the drive cylinder. Both the pressure sensor and the pressure regulating valve are electrically connected to the microcontroller.

6. The processing apparatus for the gearbox of the tension leveling machine according to claim 5, characterized in that: The weight of the roller is greater than the combined weight of the anti-slip protective pad and the pressure sensor.

7. The processing apparatus for the gearbox of the tension leveling machine according to claim 1, characterized in that: Multiple locating pin holes and multiple locating keyways together form a locating area, and this locating area matches the contour of the bottom of the gearbox of the straightening machine.

8. The processing apparatus for the gearbox of the tension leveling machine according to claim 1, characterized in that: The frame consists of uprights and crossbars fixed to the top of the uprights.

9. The processing apparatus for the gearbox of the tension leveling machine according to claim 8, characterized in that: The actuator includes an XY-axis linear slide, an electric linear actuator, and a stepper motor. The XY-axis linear slide is mounted on the bottom of the crossbar. A movable slide is provided at the bottom of the XY-axis linear slide. The electric linear actuator is fixedly mounted below the movable slide. The free end of the electric linear actuator extends downward and is fixed with a mounting plate. The stepper motor is fixedly mounted below the mounting plate. A boring tool is mounted on the output shaft of the stepper motor.

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