A vertical gear hobbing machine

Abstract

This utility model discloses a vertical gear hobbing machine, belonging to the field of automotive parts processing and manufacturing technology. It includes a frame, a clamping die assembly, a servo feed system, a hydraulic system, an electrical control system, and a lubrication system. The frame includes a base, a column, and a protective cover. The clamping die assembly, located within the protective cover, includes a clamping head, a die positioning seat, and a hydraulic cylinder. The servo feed system includes a servo motor, a ball screw, and a second sliding guide rail. The hydraulic system includes a hydraulic pump station, pipelines, and a solenoid valve group. The electrical control system includes a PLC controller, a touch screen, and a sensor group. The touch screen is connected to the PLC and also features an emergency stop button and a three-color alarm light. The lubrication system includes an automatic lubrication pump and lubrication distribution pipelines. This vertical gear hobbing machine, employing the above structure, can stably clamp workpieces, ensure processing accuracy, achieve automatic lubrication and abnormal warning, and is convenient, safe, and reliable to operate, meeting the needs of automotive parts processing.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing and manufacturing technology, and in particular to a vertical gear hobbing machine. Background Technology

[0002] In the field of gear processing equipment, gear hobbing machines are the core equipment for gear profile machining and are widely used in the processing of gear-shaped workpieces (such as automotive headrest rods) in the automotive parts industry. Traditional gear hobbing machines often have several shortcomings when processing small to medium-sized tubular and rod-shaped workpieces: First, the frame structure lacks sufficient stability in supporting key components, and the protective structure is simple, making it difficult to effectively isolate the processing area from operators, posing safety hazards; second, the clamping die assembly often uses a single sliding structure, resulting in poor smoothness of the clamping head sliding and inconvenient die replacement, affecting processing efficiency; third, the feed system often relies on ordinary transmission structures, making it difficult to control feed accuracy and easily leading to errors in gear profile dimensions; fourth, the hydraulic system lacks a real-time monitoring mechanism, failing to provide timely feedback when pressure or temperature is abnormal, potentially causing processing failures; fifth, the lubrication system often relies on manual operation, making it difficult to accurately control the timing and dosage of lubrication, easily causing accelerated wear of moving parts. To address the aforementioned issues, a vertical gear hobbing machine with optimized structure, controllable precision, safe operation, and convenient maintenance needs to be designed. By integrating a dedicated frame, precise servo feed, controllable hydraulic system, intelligent electrical control, and automatic lubrication system, it can meet the high-efficiency and precise machining requirements of small and medium-sized gear workpieces. Utility Model Content

[0003] The purpose of this invention is to provide a vertical gear hobbing machine to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides a vertical gear hobbing machine, comprising: The frame includes a base, a column, and a protective cover. The base is fixed by anchor bolts, and the column is located at the top of the base and extends longitudinally to support the protective cover. The clamping assembly is located inside the protective cover and includes a clamping head, a mold positioning seat, and a hydraulic cylinder. The clamping head is slidably connected to the column via a first sliding guide rail. The mold positioning seat is fixed below the clamping head and has a replaceable molding mold built in. The servo feed system includes a servo motor, a ball screw, a second sliding guide rail, and a guide rail support. The guide rail support is fixed on the column. The ball screw is supported at both ends of the guide rail support by bearing seats. The servo motor is driven by the ball screw. The clamping head is slidably connected to the second sliding guide rail and is linked to the ball screw through a screw nut. The hydraulic system includes a hydraulic pump station, hydraulic pipelines, and a solenoid valve assembly. The hydraulic pump station is installed on one side of the base. The hydraulic cylinder is connected to the solenoid valve assembly through the hydraulic pipelines. The solenoid valve assembly is electrically connected to the electrical control system through electrical wiring. The electrical control system includes a PLC controller, a touch screen, a sensor group, and actuators. The PLC controller is electrically connected to the servo motor, the hydraulic pump station, the sensor group, and the emergency stop button via signal lines. The touch screen communicates with the PLC controller via Ethernet. The lubrication system includes an automatic lubrication pump and lubrication distribution lines. The automatic lubrication pump is electrically connected to the PLC controller via a time relay.

[0005] Preferably, the clamping head of the clamping assembly is driven to open and close by the piston rod of the hydraulic cylinder, and the bottom of the mold positioning seat is provided with a positioning pin and a positioning groove.

[0006] Preferably, the second sliding guide rail includes two parallel linear guide rails, the clamping head is slidably connected to the linear guide rails via a slider, and is threadedly connected to the ball screw via a lead screw nut, and limit switches are provided at both ends of the linear guide rails and are electrically connected to the PLC controller.

[0007] Preferably, the sensor group includes a pressure sensor and a temperature sensor, which are disposed on the hydraulic pipeline and electrically connected to the PLC controller via signal lines.

[0008] Preferably, the protective cover is connected to the column via a hinge.

[0009] Preferably, the PLC controller controls the start and stop of the automatic lubrication pump according to a preset cycle, and the lubrication distribution pipeline delivers lubricant to the ball screw, the first sliding guide rail, the second sliding guide rail, and the moving parts of the hydraulic cylinder.

[0010] Preferably, a three-color alarm light is provided below the touch screen.

[0011] Therefore, the vertical gear hobbing machine of this utility model with the above-described structure has the following beneficial effects: (1) The servo feed system is connected to the ball screw drive through the servo motor and two parallel linear guides to achieve smooth sliding of the clamping head. Limit switches are provided at both ends of the linear guides to accurately control the feed stroke. The hydraulic system is equipped with pressure and temperature sensors to monitor the system status in real time and feed it back to the PLC controller to avoid the clamping and processing being affected by abnormal hydraulic parameters and to ensure the accuracy of tooth profile processing.

[0012] (2) In the electrical control system, the touch screen communicates with the PLC controller via Ethernet, which facilitates parameter setting and processing status viewing; the automatic lubrication pump is controlled by the PLC controller to start and stop according to a preset cycle, and the lubrication distribution pipeline accurately delivers lubricant to each moving part without the need for frequent manual operation; the mold positioning seat of the clamping assembly has a built-in replaceable forming mold, which is equipped with positioning pins and positioning slots to simplify the mold replacement process.

[0013] (3) The frame is equipped with a protective cover and is connected to the column through a hinge, which can effectively isolate the processing area; the system is equipped with an emergency stop button and a three-color alarm light, which can quickly interrupt the operation in an emergency and provide timely warnings in case of abnormality, reducing the risk of accidental touch by operators and ensuring the safety of equipment and personnel.

[0014] The technical solutions in the embodiments of this utility model will now be clearly and completely described with reference to the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a vertical gear hobbing machine according to this utility model; Reference numerals: 1. Base; 2. Column; 3. Protective cover; 4. Clamping head; 5. Mold positioning seat; 6. Hydraulic cylinder; 7. Lubrication system; 8. Servo feed system; 9. Electrical control system; 10. Touch screen; 11. Three-color alarm light; 12. Hydraulic system; 13. Hydraulic pump station; 14. Automatic lubrication pump. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0017] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar words used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "comprising" or similar words mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms "connected" or similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up," "down," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] Example like Figure 1 As shown, a vertical gear hobbing machine is suitable for machining the gear profile of automotive headrest rods, including: The frame includes a base 1, a column 2, and a protective cover 3. The base 1 is fixed with anchor bolts to provide stable support for the entire equipment and prevent deviations in the machining accuracy of the gear profile due to equipment shaking during processing. The column 2 is set at the top of the base 1 and extends longitudinally to support the protective cover 3. The protective cover 3 is connected to the column 2 by a hinge to isolate the processing area and prevent iron filings from flying or operators from accidentally touching moving parts, which could cause safety accidents. At the same time, the hinge connection design makes it easy to open and close the protective cover 3, which is convenient for workpiece loading and unloading and equipment maintenance.

[0019] The clamping assembly, located inside the protective cover 3, includes a clamping head 4, a mold positioning seat 5, and a hydraulic cylinder 6. The clamping head 4 is slidably connected to the column 2 via a first sliding guide rail, causing the workpiece to adjust its position according to processing requirements. The mold positioning seat 5 is fixed below the clamping head 4 and contains a replaceable forming mold, adaptable to the processing of automotive headrest rods with different tooth profiles, improving the equipment's versatility. The clamping head 4 of the clamping assembly is driven to open and close by the piston rod of the hydraulic cylinder 6. The bottom of the mold positioning seat 5 is equipped with a positioning pin and a positioning groove to accurately position the forming mold and avoid mold offset causing tooth profile processing errors.

[0020] The servo feed system 8 includes a servo motor, a ball screw, a second sliding guide rail, and a guide rail support. The guide rail support is fixed on the column 2, providing fixed support for the ball screw and the second sliding guide rail. The ball screw is supported at both ends of the guide rail support by bearing seats. The servo motor is connected to the ball screw via transmission. The clamping head 4 is slidably connected to the second sliding guide rail and is driven by the servo motor to rotate through the screw nut and the ball screw. This drives the clamping head 4 and the workpiece to move precisely along the second sliding guide rail, achieving feed control for tooth profile machining and ensuring the accuracy of tooth pitch and tooth depth. The second sliding guide rail includes two parallel linear guide rails. The clamping head 4 is slidably connected to the linear guide rails through a slider, improving the stability of the clamping head 4's movement and reducing the impact of shaking on machining accuracy. Limit switches are provided at both ends of the linear guide rails and are electrically connected to the PLC controller to prevent the clamping head 4 from overtraveling and damaging the equipment. At the same time, they provide position signals to the PLC controller to ensure precise and controllable machining stroke.

[0021] The hydraulic system 12 includes a hydraulic pump station 13, hydraulic pipelines, and a solenoid valve assembly. The hydraulic pump station 13 is installed on one side of the base 1 and provides a power source for the hydraulic system 12. The hydraulic cylinder 6 is connected to the solenoid valve assembly through the hydraulic pipelines. The solenoid valve assembly is electrically connected to the electrical control system 9 through electrical circuits. The electrical control system 9 controls the on / off of the solenoid valve assembly, adjusts the hydraulic oil circuit, and then controls the extension and retraction of the hydraulic cylinder 6 to provide a stable clamping force for the clamping mold assembly.

[0022] The electrical control system 9 includes a PLC controller, a touch screen 10, a sensor group, and actuators. The PLC controller is electrically connected to the servo motor, hydraulic pump station 13, sensor group, and emergency stop button via signal lines. As the core of equipment control, it receives signals from various components and issues commands to coordinate the operation of the entire machine. The touch screen 10 communicates with the PLC controller via Ethernet, providing a human-machine interface for operators to set processing parameters, view operating status, and store programs. The sensor group includes pressure and temperature sensors, which are installed on the hydraulic pipeline and electrically connected to the PLC controller via signal lines. They monitor the pressure and temperature of the hydraulic system 12 in real time and send a signal to the PLC controller when parameters are abnormal. A three-color alarm light 11 is installed below the touch screen 10, which emits an audible and visual alarm when equipment malfunctions or parameters are abnormal, reminding operators to handle the situation promptly. The emergency stop button is used to cut off the power to the equipment and forcibly stop all actions in case of sudden danger, ensuring the safety of personnel and equipment.

[0023] The lubrication system 7 includes an automatic lubrication pump 14 and a lubrication distribution pipeline. The automatic lubrication pump 14 is electrically connected to the PLC controller via a time relay. The PLC controller controls the start and stop of the automatic lubrication pump 14 according to a preset cycle, realizing automated control of the lubrication action and avoiding omissions in manual lubrication. The lubrication distribution pipeline delivers lubricant to the moving parts of the ball screw, the first sliding guide rail, the second sliding guide rail, and the hydraulic cylinder 6, reducing friction and wear of each moving part, extending the service life of the equipment, and ensuring smooth movement of the parts to maintain processing accuracy.

[0024] Working principle: After powering on the equipment, confirm via touchscreen 10 that there are no abnormal alarms in the hydraulic system 12, lubrication system 7, and sensor group. If the forming mold needs to be replaced, open the hinged protective cover 3, use the positioning pin and positioning groove of the mold positioning seat 5 to complete the replacement, and then close the protective cover 3. Then open the protective cover 3 again, place the straight tube workpiece into the forming mold of the clamping assembly, and ensure that it is in place. Next, issue a clamping command via touchscreen 10. The PLC controller controls the hydraulic pump station 13 to start, and the solenoid valve group adjusts the oil circuit to drive the piston rod of the hydraulic cylinder 6 to close the clamping head 4 to clamp the workpiece. After processing, the PLC controls the servo motor to run, which drives the hobbing cutter along the second sliding guide rail (parallel linear guide rail) according to the preset trajectory via the ball screw. At the same time, the hobbing cutter rotates to perform hobbing on the workpiece (limit switches monitor the stroke in real time). After processing, the PLC instructs the hydraulic system 12 to release the clamping mold. If it is a double-headed hobbing product, the workpiece is taken out, turned around, and put back into the clamping mold to repeat the clamping and processing steps. If it is a single-headed product, the workpiece is taken out directly. After all workpieces are processed, the equipment is stopped and the power is turned off via the touch screen 10, completing all operations.

[0025] Therefore, the vertical gear hobbing machine of this utility model with the above-mentioned structure can stably clamp the workpiece, ensure the machining accuracy, realize automatic lubrication and abnormal warning, and is convenient, safe and reliable to operate, and is suitable for the processing needs of automotive parts.

[0026] Finally, it should be noted that the above embodiments are only preferred embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be covered within the protection scope of the present utility model.

Claims

1. A vertical gear hobbing machine, characterized in that, include: The frame includes a base, a column, and a protective cover. The base is fixed by anchor bolts, and the column is located at the top of the base and extends longitudinally to support the protective cover. The clamping assembly is located inside the protective cover and includes a clamping head, a mold positioning seat, and a hydraulic cylinder. The clamping head is slidably connected to the column via a first sliding guide rail. The mold positioning seat is fixed below the clamping head and has a replaceable molding mold built in. The servo feed system includes a servo motor, a ball screw, a second sliding guide rail, and a guide rail support. The guide rail support is fixed on the column. The ball screw is supported at both ends of the guide rail support by bearing seats. The servo motor is driven by the ball screw. The clamping head is slidably connected to the second sliding guide rail and is linked to the ball screw through a screw nut. The hydraulic system includes a hydraulic pump station, hydraulic pipelines, and a solenoid valve assembly. The hydraulic pump station is installed on one side of the base. The hydraulic cylinder is connected to the solenoid valve assembly through the hydraulic pipelines. The solenoid valve assembly is electrically connected to the electrical control system through electrical wiring. The electrical control system includes a PLC controller, a touch screen, a sensor group, and actuators. The PLC controller is electrically connected to the servo motor, the hydraulic pump station, the sensor group, and the emergency stop button via signal lines. The touch screen communicates with the PLC controller via Ethernet. The lubrication system includes an automatic lubrication pump and lubrication distribution lines. The automatic lubrication pump is electrically connected to the PLC controller via a time relay.

2. A vertical gear hobbing machine according to claim 1, characterized in that: The clamping head of the clamping assembly is driven to open and close by the piston rod of the hydraulic cylinder, and the bottom of the mold positioning seat is provided with a positioning pin and a positioning groove.

3. A vertical gear hobbing machine according to claim 1, characterized in that: The second sliding guide rail includes two parallel linear guide rails. The clamping head is slidably connected to the linear guide rails via a slider and threadedly connected to the ball screw via a lead screw nut. Limit switches are provided at both ends of the linear guide rails and are electrically connected to the PLC controller.

4. A vertical gear hobbing machine according to claim 1, characterized in that: The sensor group includes a pressure sensor and a temperature sensor, which are installed on the hydraulic pipeline and electrically connected to the PLC controller via signal lines.

5. A vertical gear hobbing machine according to claim 1, characterized in that: The protective cover is connected to the column via a hinge.

6. A vertical gear hobbing machine according to claim 1, characterized in that: The PLC controller controls the start and stop of the automatic lubrication pump according to a preset cycle, and the lubrication distribution pipeline delivers lubricant to the ball screw, the first sliding guide rail, the second sliding guide rail, and the moving parts of the hydraulic cylinder.

7. A vertical gear hobbing machine according to claim 1, characterized in that: A three-color alarm light is located below the touchscreen.

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