A dry-wet cutting horizontal CNC gear hobbing machine
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-15
- Publication Date
- 2026-08-11
AI Technical Summary
[0003]1.加工模式适配性差：传统滚齿机多为单一加工模式(干切或湿切)，需更换设备或大规模改造才能切换，增加生产成本与产线调整周期；干切时无有效防护易致切屑飞溅、刀具磨损快，湿切时冷却润滑系统难精准适配不同工况，影响加工质量；2.工件输送与装夹效率低：工件装夹依赖人工对准、固定，耗时费力；输送组件缺乏精准定位与锁紧，加工时易因工件位移导致齿形、齿距精度偏差，降低良品率；3.加工组件稳定性不足：滚刀主轴的轴承等关键部件缺乏防护，切削液、切屑侵入易加速磨损，影响主轴旋转精度；滚刀进给调控单一，难满足复杂齿形(如变齿厚、修形齿)的加工需求，限制齿轮产品多样性
[0014] This utility model, through the design of a horizontal CNC gear hobbing machine for both dry and wet cutting, achieves the following effects: 1. It integrates a spray assembly and a dustproof housing. During dry cutting, the dustproof housing blocks chip splashing, protecting the equipment and the environment; during wet cutting, the spray assembly precisely supplies coolant, reducing cutting heat and lubricating the cutting tools, meeting the gear processing needs of different materials (such as dry cutting of hardened steel and wet cutting of aluminum alloys) and processes (roughing and efficient wet cutting, finishing and low-stress dry cutting), without requiring equipment replacement and shortening the production line adjustment cycle; 2. The workpiece mounting unit features a gear meshing rod and a replaceable adapter head. The design is adapted to gear workpieces with different bore diameters and keyway structures, shortening clamping time; the electric lifting rod, in conjunction with a micro motor, automatically completes workpiece lifting, centering, and meshing locking, replacing manual operation and reducing clamping errors; 3. The protective cover of the bearing bracket blocks chips and cutting fluid, extending bearing life; the hobbing spindle, with multi-stage feed control (lateral + longitudinal), can realize continuous cutting of gears with variable tooth thickness and precise feed of modified teeth, meeting the processing needs of high-end gears such as automotive transmissions (variable tooth thickness gears) and robot reducers (high-precision modified teeth).
Smart Images
Figure CN224615311U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gear processing equipment technology, specifically a dry and wet cutting horizontal CNC gear hobbing machine, used to realize dry and wet cutting of gears. It belongs to the sub-field of gear processing machine tools in mechanical manufacturing equipment, and involves the integrated application of multiple technical branches such as CNC machining, cutting cooling and lubrication, workpiece conveying and clamping. Background Technology
[0002] In the gear manufacturing industry, horizontal CNC gear hobbing machines are the core equipment for processing cylindrical gears. With increasing demands for precision, efficiency, and green manufacturing in gear processing, existing gear hobbing machines suffer from the following pain points:
[0003] 1. Poor adaptability of processing modes: Traditional gear hobbing machines are mostly limited to a single processing mode (dry or wet cutting), requiring equipment replacement or large-scale modifications to switch modes, increasing production costs and production line adjustment cycles; during dry cutting, the lack of effective protection easily leads to chip splashing and rapid tool wear, while during wet cutting, the cooling and lubrication system is difficult to accurately adapt to different working conditions, affecting processing quality; 2. Low efficiency of workpiece conveying and clamping: Workpiece clamping relies on manual alignment and fixing, which is time-consuming and labor-intensive; the conveying components lack precise positioning and locking, and during processing, workpiece displacement easily leads to deviations in tooth profile and pitch accuracy, reducing yield; 3. Insufficient stability of processing components: Key components such as bearings of the hob spindle lack protection, and the intrusion of cutting fluid and chips easily accelerates wear, affecting the spindle rotation accuracy; the hob feed control is limited, making it difficult to meet the processing needs of complex tooth profiles (such as variable tooth thickness and modified teeth), limiting the diversity of gear products.
[0004] Therefore, it is necessary to design a dry and wet cutting horizontal CNC gear hobbing machine to solve the problems mentioned above. Utility Model Content
[0005] This utility model discloses a dry and wet cutting horizontal CNC gear hobbing machine, which aims to provide a gear processing equipment with reasonable structural design, high processing efficiency and effective protection of the cleanliness of the processing environment.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] This dry and wet cutting horizontal CNC gear hobbing machine mainly consists of a central support, side supports, conveying components, processing components, spraying components, workpiece mounting unit, and a dustproof housing. The central and side supports serve as the basic load-bearing structures of the equipment, providing a stable mounting platform for each functional component.
[0008] Furthermore, the conveying assembly is positioned above the side seat, and its core includes a conveying guide rail arranged along the length of the side seat. Multiple transmission wheels drive the conveying guide rail, with the input end of one of these wheels connected to a guide rail motor. The workpiece mounting unit is detachably mounted on the conveying guide rail, and the gear workpiece to be processed is simultaneously mounted on the workpiece mounting unit. Driven by the guide rail motor, the conveying guide rail can reciprocate the workpiece mounting unit and the gear workpiece to be processed, thereby precisely transferring the gear workpiece between the processing station and the loading / unloading station, significantly improving the automation level and processing continuity of workpiece loading / unloading.
[0009] Furthermore, the workpiece mounting unit further includes an electric lifting rod, a micro motor, and a gear meshing rod. The electric lifting rod is located on the left and right sides of the conveyor guide rail, and the height of the workpiece can be adjusted according to processing requirements. The input end of the micro motor is connected to one side of the gear meshing rod, and the other side of the gear meshing rod is engaged with the hole of the gear workpiece to be processed. By driving the gear meshing rod to rotate through the micro motor, the gear workpiece to be processed can be rotated synchronously, meeting the requirements for workpiece rotation during processing and ensuring processing accuracy.
[0010] Furthermore, the machining assembly is mounted on the intermediate base. Its key component is the hob spindle holder, which houses the hob spindle. One end of the hob spindle is connected to a hob drive motor. Driven by the hob drive motor, the hobs on the hob spindle rotate, thus achieving gear cutting. To enhance the stability of the hob spindle operation, load-bearing bearing brackets are fixedly installed on both the front and rear sides of the hob spindle holder. The front and rear ends of the hob spindle are mounted on these bearing brackets, ensuring reliable load-bearing capacity while allowing for flexible rotation under the bearings, thus guaranteeing the smoothness of the cutting process.
[0011] Furthermore, the spray assembly is mounted on the side fixing rods on both the front and rear sides, and includes spray pipes, a spray pump body, and spray heads. Several spray heads facing the machining station are connected to the ends of the spray pipes, and the spray pipes are connected to the coolant supply system. During machining, the spray pump body delivers coolant to the spray heads through the spray pipes, and the spray heads spray coolant onto the machining station. This not only effectively reduces the temperature of the machining area and minimizes tool wear, but also promptly washes away machining debris, ensuring machining quality.
[0012] Furthermore, the processing components and spraying components are equipped with dustproof housings on their outer sides. These dustproof housings can effectively block debris and coolant splashes generated during processing, prevent dust from spreading, provide a clean environment for equipment operation, and also help extend the service life of the equipment.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This utility model, through the design of a horizontal CNC gear hobbing machine for both dry and wet cutting, achieves the following effects: 1. It integrates a spray assembly and a dustproof housing. During dry cutting, the dustproof housing blocks chip splashing, protecting the equipment and the environment; during wet cutting, the spray assembly precisely supplies coolant, reducing cutting heat and lubricating the cutting tools, meeting the gear processing needs of different materials (such as dry cutting of hardened steel and wet cutting of aluminum alloys) and processes (roughing and efficient wet cutting, finishing and low-stress dry cutting), without requiring equipment replacement and shortening the production line adjustment cycle; 2. The workpiece mounting unit features a gear meshing rod and a replaceable adapter head. The design is adapted to gear workpieces with different bore diameters and keyway structures, shortening clamping time; the electric lifting rod, in conjunction with a micro motor, automatically completes workpiece lifting, centering, and meshing locking, replacing manual operation and reducing clamping errors; 3. The protective cover of the bearing bracket blocks chips and cutting fluid, extending bearing life; the hobbing spindle, with multi-stage feed control (lateral + longitudinal), can realize continuous cutting of gears with variable tooth thickness and precise feed of modified teeth, meeting the processing needs of high-end gears such as automotive transmissions (variable tooth thickness gears) and robot reducers (high-precision modified teeth). Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the main structure of this utility model;
[0017] Figure 3 This is a three-dimensional structural schematic diagram of the processing component of this utility model;
[0018] Figure 4 This is a side view of the structure of this utility model.
[0019] In the diagram: 1. Middle seat; 2. Side seat; 3. Conveying assembly; 4. Processing assembly; 5. Spraying assembly; 6. Workpiece mounting unit; 7. Gear workpiece to be processed; 8. Dustproof housing; 9. Side fixing rod; 31. Conveying guide rail; 41. Hob spindle frame; 42. Hob spindle; 43. Hob drive motor; 44. Hob; 45. Bearing frame; 51. Spraying pipeline; 52. Spray pump body; 53. Spray head; 61. Electric lifting rod; 62. Micro motor; 63. Gear meshing rod. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0021] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are provided. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.
[0022] Example 1
[0023] Please see Figure 1 This embodiment provides a dry and wet cutting horizontal CNC gear hobbing machine, the structure of which includes an intermediate base 1, a side base 2, a conveying assembly 3, a processing assembly 4, a spraying assembly 5, a workpiece mounting unit 6, a gear workpiece to be processed 7, a dustproof housing 8, and a side fixing rod 9.
[0024] Example 2
[0025] Please see Figure 1 as well as Figure 2 In this embodiment, based on Embodiment 1, the conveying assembly 3 is further positioned above the side seat 2. The conveying assembly 3 includes a conveying guide rail 31 arranged along the length of the side seat 2. Multiple transmission wheels inside the conveying guide rail 31 drive the transmission, and the input end of one of the transmission wheels is connected to a guide rail motor. The workpiece mounting unit 6 is detachably mounted on the conveying guide rail 31, and the gear workpiece 7 to be processed is simultaneously mounted on the workpiece mounting unit 6. Driven by the guide rail motor, the conveying guide rail 31 can drive the workpiece mounting unit 6 and the gear workpiece 7 to be processed to reciprocate, thereby realizing the transfer of the gear workpiece 7 between the processing station and the loading / unloading station.
[0026] Example 3
[0027] Please see Figure 1 as well as Figure 2 Based on Embodiment 1, this embodiment further defines the workpiece mounting unit 6 as consisting of an electric lifting rod 61, a micro motor 62, and a gear meshing rod 63. The electric lifting rod 61 is set on the left and right sides of the conveying guide rail 31. The input end of the micro motor 62 is connected to one side of the gear meshing rod 63, and the other side of the gear meshing rod 63 is meshed with the hole of the gear workpiece 7 to be processed.
[0028] Example 4
[0029] Please see Figure 3This embodiment, based on embodiment 1, further specifies that the machining component 4 is mounted on the intermediate base 1. The machining component 4 includes a hob spindle frame 41, a hob spindle 42, a hob drive motor 43, a hob 44, and a bearing support frame 45. The hob spindle 42 is disposed inside the hob spindle frame 41, and one end of the hob spindle 42 is connected to the hob drive motor 43. The hob 44 is mounted on the hob spindle 42, and under the drive of the hob drive motor 43, the hob 44 can rotate to achieve gear cutting. The bearing support frame 45 is fixedly mounted on the front and rear sides of the hob spindle frame 41. The front and rear ends of the hob spindle 42 are supported on the bearing support frame 45 by bearings, and rotate under the action of the bearings.
[0030] Example 5
[0031] Please see Figure 2 as well as Figure 4 Based on embodiment 1, this embodiment further specifies that the spray assembly 5 is sleeved and installed on the side fixing rods 9 on the front and rear sides. The spray assembly 5 includes a spray pipe 51, a spray pump body 52 and a spray head 53. The end of the spray pipe 51 is connected to a number of spray heads 53 facing the processing station. The spray pipe 51 is connected to the coolant supply system.
[0032] Example 6
[0033] Please see Figure 1 Based on Embodiment 1, this embodiment further specifies that the dustproof housing 8 is disposed on the outside of the processing component 4 and the spraying component 5, in order to block the splashing of debris and coolant generated during the processing and prevent dust from spreading.
[0034] The working process of this utility model is as follows: When using this dry and wet cutting horizontal CNC gear hobbing machine, the gear workpiece 7 to be processed is first installed on the workpiece mounting unit 6 via the gear meshing rod 63. At this time, the workpiece mounting unit 6 is located at the loading and unloading position of the conveying guide rail 31. Then, the guide rail motor is started, driving the conveying guide rail 31 to rotate, so that the workpiece mounting unit 6 with the gear workpiece 7 to be processed moves along the conveying guide rail 31 to the processing position. At the same time, according to the processing requirements, the electric lifting rod 61 works to adjust the height of the gear workpiece 7 to be processed, so that it matches the position of the hob 44 of the processing component 4. At the same time, the micro motor 62 is started, driving the gear workpiece 7 to be processed to rotate to a suitable initial processing angle via the gear meshing rod 63. Then, the hob drive motor 43 is started, driving the hob spindle 42. As the hob 44 rotates, it contacts the gear workpiece 7 to be processed and performs cutting. During the processing, the bearing bracket 45 provides stable support for the hob spindle 42, ensuring the smooth rotation of the hob 44. When wet cutting is performed, the spray pump body 52 is started, and coolant is delivered to the spray head 53 through the spray pipe 51. The spray head 53 sprays coolant onto the processing station to cool the hob 44 and the gear workpiece 7 to be processed, and washes away the debris generated during processing. After the cutting is completed, the hob drive motor 43, the micro motor 62 and the spray pump body 52 stop working. The guide rail motor starts again, driving the conveyor guide rail 31 to continue running, transporting the processed gear workpiece from the processing station back to the unloading station, and removing the processed workpiece to complete one processing cycle.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A dry and wet cutting horizontal CNC gear hobbing machine, characterized in that: It includes a middle seat (1), a side seat (2), a conveying assembly (3) located above the side seat (2), a processing assembly (4) located on the middle seat (1), and a spraying assembly (5) that cooperates with the processing assembly (4). The spraying assembly (5) is sleeved and installed on the side fixing rods (9) on the front and rear sides. The conveying assembly (3) is equipped with a workpiece mounting unit (6). The workpiece mounting unit (6) is equipped with a gear workpiece (7) to be processed. The processing assembly (4) and the spraying assembly (5) are equipped with a dustproof shell (8) on the outside.
2. The dry and wet cutting horizontal CNC gear hobbing machine according to claim 1, characterized in that: The conveying assembly (3) includes a conveying guide rail (31) arranged along the length of the side seat (2). The conveying guide rail (31) is driven by multiple transmission wheels, and the input end of one of the transmission wheels is connected to a guide rail motor. The workpiece mounting unit (6) is detachably mounted on the conveying guide rail (31). The guide rail motor drives the conveying guide rail (31) to reciprocate, thereby realizing the transfer of the gear workpiece (7) to be processed between the processing station and the loading and unloading station.
3. A dry and wet cutting horizontal CNC gear hobbing machine according to claim 1, characterized in that: The workpiece mounting unit (6) includes an electric lifting rod (61), a micro motor (62), and a gear meshing rod (63). The electric lifting rod (61) is set on the left and right sides of the conveying guide rail (31). The input end of the micro motor (62) is connected to one side of the gear meshing rod (63), and the other side of the gear meshing rod (63) is meshed with the hole of the gear workpiece (7) to be processed.
4. A dry and wet cutting horizontal CNC gear hobbing machine according to claim 1, characterized in that: The processing assembly (4) includes a hob spindle frame (41) mounted on the intermediate base (1). The hob spindle frame (41) contains a hob spindle (42). One end of the hob spindle (42) is connected to a hob drive motor (43). The hob drive motor (43) drives the hob on the hob spindle (42) to rotate, so that the hob (44) rotates to realize gear cutting processing.
5. A dry and wet cutting horizontal CNC gear hobbing machine according to claim 4, characterized in that: The front and rear sides of the hob spindle frame (41) are also fixedly installed with bearing frames (45). The front and rear ends of the hob spindle (42) are mounted on the bearing frames (45) through bearings, and are supported by the bearing frames (45) and rotate under the action of the bearings.
6. A dry and wet cutting horizontal CNC gear hobbing machine according to claim 1, characterized in that: The spray assembly (5) includes a spray pipe (51), a spray pump body (52), and spray heads (53). The end of the spray pipe (51) is connected to several spray heads (53) facing the processing station. The spray pipe (51) is connected to a coolant supply system.