A gear hobbing machine deburring device

Abstract

The utility model provides a kind of hobbing machine deburring device, belong to machine tool equipment technical field, including support, base, mandrel, rolling bearing, deburring blade wheel and locking assembly, support one end is used to be connected with the column on the rack of hobbing machine;Base is set in the other end of support;Mandrel is vertically arranged on base;Rolling bearing is sleeved in the upper end of mandrel;Deburring blade wheel is sleeved in the outside of rolling bearing, and is connected with the top end of mandrel by locking assembly.The utility model can solve the problem that the position adjustment operation of existing hobbing machine deburring device is complex, and the practicability is low.

Description

Technical Field

[0001] This utility model belongs to the field of machine tool equipment technology, and more specifically, it relates to a deburring device for a gear hobbing machine. Background Technology

[0002] After hobbing, worm gears, gears, and other workpieces are prone to developing sharp burrs on their tooth edges, which seriously affects the workpiece's appearance accuracy and assembly performance (such as reduced gear meshing accuracy and increased worm gear transmission noise). In existing technologies, manual deburring or secondary machining is commonly used. However, both methods have certain problems: manual deburring is inefficient, and secondary machining requires additional clamping and positioning, leading to increased logistics costs and reduced equipment utilization. A Chinese patent discloses a deburring fixture for a hobbing machine (patent application number: CN202120711450.7), including a deburring tool, a base, and a fixed seat. One bottom surface of the deburring tool has a cutting edge, and the other bottom surface has a mating groove. The base has a hollow positioning shaft that fits with the mating groove with a clearance fit, and an internal compression spring. One end of the compression spring is connected to the end of the positioning shaft furthest from the deburring tool, and the other end protrudes from the end face of the positioning shaft. An adjustment device for adjusting the position of the deburring tool is provided between the fixed seat and the base. Although this patent can make adaptive adjustments for workpieces with different sizes, reducing changeover time, the adjustment operation is relatively complicated and its practicality is not high. Utility Model Content

[0003] The purpose of this invention is to provide a deburring device for a gear hobbing machine, so as to solve the problems of complex position adjustment and low practicality of existing deburring devices for gear hobbing machines.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a deburring device for a gear hobbing machine is provided, comprising a bracket, a base, a mandrel, a rolling bearing, a deburring wheel, and a locking assembly. One end of the bracket is used to connect to a column on the frame of the gear hobbing machine; the base is disposed at the other end of the bracket; the mandrel is vertically disposed on the base; the rolling bearing is sleeved on the upper end of the mandrel; the deburring wheel is sleeved on the outside of the rolling bearing and is connected to the top end of the mandrel through the locking assembly.

[0005] In one possible implementation, based on the above technical solutions, the locking assembly includes a pressure bearing, a washer, and a first fastener. The pressure bearing is sleeved on the top of the spindle to bear axial force; the washer is sleeved between the outer surface of the spindle and the inner ring of the pressure bearing; the first fastener passes through the washer and is threadedly connected to the threaded hole at the top of the spindle to fasten the de-barrel wheel to the top of the spindle.

[0006] In one possible implementation, based on the above technical solutions, the deburring device for the gear hobbing machine further includes a support assembly. The support assembly includes a first elastic element and a positioning ring. The first elastic element is sleeved on the spindle below the rolling bearing. The positioning ring is sleeved on the spindle below the first elastic element. The upper and lower ends of the first elastic element abut against the rolling bearing and the positioning ring, respectively.

[0007] In one possible implementation, in conjunction with the above technical solutions, the support assembly further includes a second spring, which is sleeved on the outside of the first elastic member. The second spring and the first elastic member rotate in opposite directions, and the upper and lower ends of the second spring abut against the rolling bearing and the positioning ring, respectively.

[0008] In one possible implementation, based on the above technical solutions, the support includes a pressure block, a horizontal plate, and reinforcing ribs. The pressure block is vertically arranged, and its first side has multiple mounting holes along its height direction for connection with the gear hobbing machine. The horizontal plate is horizontally arranged, and its second end has a sliding groove, in which the base is slidably connected. The first end of the horizontal plate is fixedly connected to the second side of the pressure block. The reinforcing ribs are inclinedly arranged below the horizontal plate, with one end connected to the horizontal plate and the other end connected to the pressure block.

[0009] In one possible implementation, the deburring device for the gear hobbing machine, in conjunction with the above technical solutions, further includes a second fastener, a washer, and a locking nut. The second fastener is vertically arranged in the slide groove. The base is a cylindrical structure. The second fastener is nested in the base. The upper end of the second fastener passes through the upper end of the base and is provided with a locking nut. The washer is sleeved on the second fastener below the horizontal plate.

[0010] In one possible implementation, based on the above technical solutions, the mandrel has a cylindrical structure. After the lower end of the mandrel passes through the locking nut, it extends into the base. The outer wall of the mandrel is threadedly connected to the base. The second fastener passes through the mandrel, and the outer wall of the second fastener is threadedly connected to the inner wall of the mandrel.

[0011] In one possible implementation, in conjunction with the above technical solutions, the deburring device of the gear hobbing machine also includes a translation component, which is used to drive the column to reciprocate in the horizontal direction.

[0012] In one possible implementation, in conjunction with the above technical solutions, the bracket is also provided with a mounting bracket, which is used to mount on the slide rail on the column of the gear hobbing machine frame.

[0013] The advantages of the deburring device for a gear hobbing machine provided by this utility model are as follows: Compared with the prior art, the base is horizontally slidably set at the second end of the support, which can realize precise fine adjustment of the distance between the deburring wheel and the workpiece, adapt to the deburring needs of workpieces of different sizes, and shorten the changeover time from the traditional 20 minutes to less than 5 minutes; the cooperation between the rolling bearing and the mandrel allows the deburring wheel to rotate automatically with the workpiece, and the cutting edge of the deburring wheel is used to remove burrs synchronously, without the need for an additional power source, reducing energy consumption, and avoiding burr residue caused by manual operation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the deburring device for a gear hobbing machine provided by the present invention. Figure 2 This is a schematic diagram of the locking component provided by this utility model; Figure 3 This is a schematic diagram of the position and structure of the support component described in this utility model.

[0016] The labels for the attached figures are as follows: 10. Frame; 11. Column; 12. Support; 121. Pressure block; 122. Horizontal plate; 123. Reinforcing rib; 13. Base; 14. Rolling bearing; 15. De-barrel wheel; 16. Second fastener; 17. Washer; 18. Locking nut; 19. Mandrel; 20. Locking assembly; 21. Pressure bearing; 22. Washer; 23. First fastener; 30. Support assembly; 31. First elastic element; 32. Positioning ring; 33. Second spring; 40. Translation component. Detailed Implementation

[0017] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] It should be further explained that the accompanying drawings and embodiments of this utility model mainly describe the concept of this utility model. Based on this concept, some specific forms and settings of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of this utility model, they can implement the above-mentioned specific forms and settings in a well-known manner.

[0019] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0020] The directional terms "inner" and "outer" refer to the inner and outer sides relative to the outline of each component itself. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0022] The present invention provides a deburring device for a gear hobbing machine.

[0023] like Figure 1 As shown, the gear hobbing machine includes a frame 10 and a column 11. The column 11 includes a horizontal section and a vertical section connected end to end. The horizontal section is arranged parallel above the frame 10, and the vertical section is arranged vertically on one side of the frame 10. The second end of the horizontal section is connected to the top end of the vertical section. The first embodiment of this utility model provides a deburring device for a gear hobbing machine, including a bracket 12, a base 13, a mandrel 19, a rolling bearing 14, a deburring wheel 15, and a locking assembly 20. One end of the bracket 12 is connected to a column 11 on the frame 10 of the gear hobbing machine; the base 13 is disposed at the other end of the bracket 12; the mandrel 19 is vertically disposed on the base 13; the rolling bearing 14 is sleeved on the upper end of the mandrel 19; the deburring wheel 15 is sleeved on the outside of the rolling bearing 14 and connected to the top end of the mandrel 19 through the locking assembly 20. This satisfies the deburring requirements of different workpieces. For example, when machining large-diameter gears, the base 13 slides away from the center of the workpiece to increase the distance between the deburring wheel 15 and the workpiece; when machining small-diameter gears, it slides in the opposite direction to reduce the distance, ensuring accurate cutting position.

[0024] The mandrel 19 is vertically fixed to the center of the base 13 at its lower end, providing stable support for the subsequent installation of components. A rolling bearing 14 is fitted onto the upper shoulder of the mandrel 19. The outer ring of the mandrel 19 and the inner hole of the de-drilling wheel 15 are in clearance fit, allowing the de-drilling wheel 15 to rotate freely. The de-drilling wheel 15 is connected to the top of the mandrel 19 via a locking assembly 20, enabling detachable fixing and stable operation of the de-drilling wheel 15. During operation, the sliding position of the base 13 is adjusted according to the workpiece size. After the gear hobbing machine starts, the workpiece rotates, causing the de-drilling wheel 15 to rotate around the mandrel 19 via the rolling bearing 14. The cutting edge of the de-drilling wheel 15 cuts burrs, completing the simultaneous gear hobbing and deburring operations.

[0025] Compared with existing technologies, the base 13 is horizontally slidably set at the second end of the bracket 12, which can achieve precise fine adjustment of the distance between the deburring wheel 15 and the workpiece, adapting to the deburring requirements of workpieces of different sizes, and shortening the changeover time from the traditional 20 minutes to less than 5 minutes; the cooperation between the rolling bearing 14 and the spindle 19 allows the deburring wheel 15 to rotate automatically with the workpiece, and the cutting edge of the deburring wheel 15 is used to remove burrs synchronously, without the need for an additional power source, reducing energy consumption, and avoiding burr residue caused by manual operation.

[0026] like Figures 1 to 2 As shown, the locking assembly 20 includes a pressure bearing 21, a washer 22, and a first fastener 23. The pressure bearing 21 is sleeved on the top of the spindle 19 to bear axial force. The washer 22 is sleeved between the outer surface of the spindle 19 and the inner ring of the pressure bearing 21. The first fastener 23 passes through the washer 22 and is threadedly connected to the threaded hole at the top of the spindle 19 to fasten the de-barrel wheel 15 to the top of the spindle 19.

[0027] The locking assembly 20 achieves both fastening of the deburring wheel 15 and axial force bearing through the synergistic action of the pressure bearing 21, washer 22, and first fastener 23. The pressure bearing 21 is a thrust ball bearing, with its inner diameter transition-fitted to the journal at the top of the mandrel 19. It is fitted onto the top of the mandrel 19 via a heat-shrink process, ensuring no relative rotation between the inner ring of the pressure bearing 21 and the mandrel 19, effectively bearing the axial cutting force generated during deburring. The washer 22 is made of 65Mn spring steel with a thickness of 2mm. Its inner diameter is larger than the outer diameter of the mandrel 19, and its outer diameter is smaller than the outer diameter of the inner ring of the pressure bearing 21. After precision stamping, it undergoes quenching and medium-temperature tempering. The washer 22 is fitted between the outer surface of the mandrel 19 and the inner ring of the pressure bearing 21. When the first fastener 23 is tightened, the washer 22 undergoes elastic deformation, providing a stable axial preload and preventing axial movement of the deburring wheel 15. The first fastener 23 is an 8.8 grade hexagon socket head cap bolt, which securely locks the deburring wheel 15 to the top of the mandrel 19 using a torque wrench, while allowing the deburring wheel 15 to rotate flexibly via the rolling bearing 14. This structural design ensures stability during the deburring process (axial movement ≤0.02mm) and enables rapid tool replacement (disassembly time ≤2 minutes), meeting the needs of mass production.

[0028] like Figure 3 As shown, the deburring device of the gear hobbing machine also includes a support assembly 30, which includes a first elastic element 31, a positioning ring 32, and a second spring 33. The first elastic element 31 is sleeved on the spindle 19 below the rolling bearing 14; the positioning ring 32 is sleeved on the spindle 19 below the first elastic element 31, and the upper and lower ends of the first elastic element 31 abut against the rolling bearing 14 and the positioning ring 32, respectively. The second spring 33 is sleeved outside the first elastic element 31, and the second spring 33 and the first elastic element 31 rotate in opposite directions. The upper and lower ends of the second spring 33 abut against the rolling bearing 14 and the positioning ring 32, respectively.

[0029] The support assembly 30 provides elastic support and vibration suppression for the rolling bearing 14 through a combination of a first elastic element 31, a positioning ring 32, and a second spring 33. The first elastic element 31 is a cylindrical helical compression spring, fitted onto the spindle 19 below the rolling bearing 14. Its upper end face abuts tightly against the lower end face of the inner ring of the rolling bearing 14, and its lower end face abuts against the upper surface of the positioning ring 32. The positioning ring 32 can be a nut, tightened onto the spindle 19 to define the installation position of the first elastic element 31.

[0030] The second spring 33 is also a cylindrical helical compression spring, fitted outside the first elastic element 31 and rotating in the opposite direction to the first elastic element 31. Its upper end face abuts against the lower end face of the inner ring of the rolling bearing 14, and its lower end face abuts against the upper surface of the positioning ring 32. When the deburring wheel 15 is working, the first elastic element 31 provides support force through its own elastic deformation, compensating for the radial runout when the workpiece rotates; while the second spring 33, rotating in the opposite direction, forms a composite vibration damping structure with the first elastic element 31, using the torque generated by the reverse helix of the two springs to offset high-frequency vibration, especially effectively suppressing the axial vibration generated when the gear hobbing machine is running at high speed. This design not only enhances the rigidity of the support assembly 30, but also reduces the vibration noise during the deburring process from 85dB to 72dB through the opposite rotation of the two springs, while controlling the deburring force fluctuation within ±3N, ensuring the consistency of burr removal, and extending the service life of the rolling bearing 14 by more than 3 times.

[0031] like Figures 1 to 3 As shown, the bracket 12 includes a pressure block 121, a horizontal plate 122, and a reinforcing rib 123. The pressure block 121 is vertically arranged, and a plurality of mounting holes are provided on the first side of the pressure block 121 along its height direction for connection with the gear hobbing machine. The horizontal plate 122 is horizontally arranged, and a groove is provided at the second end of the horizontal plate 122. The base 13 is slidably connected to the groove. The first end of the horizontal plate 122 is fixedly connected to the second side of the pressure block 121. The reinforcing rib 123 is inclinedly arranged below the horizontal plate 122, with one end connected to the horizontal plate 122 and the other end connected to the pressure block 121.

[0032] The bracket 12 achieves a stable connection with the gear hobbing machine and provides support and adjustment for the base 13 through the structural combination of the pressure block 121, the horizontal plate 122, and the reinforcing rib 123. The pressure block 121 has three equidistant mounting holes along its first side at 50mm intervals, connected to the vertical section of the column 11 by T-bolts. The horizontal plate 122 is a forged 45# steel piece, horizontally welded to the middle of the second side of the pressure block 121. Its second end is machined with a groove using wire cutting to form a sliding fit with the lower end of the base 13. The weld between the first end of the horizontal plate 122 and the pressure block 121 uses a double-bevel weld to ensure connection strength. The reinforcing rib 123 is obliquely welded to the bottom of the horizontal plate 122. One end of the rib is fully welded to the center of the bottom surface of the horizontal plate 122, and the other end is welded to the lower side of the pressure block 121, forming a stable triangular support structure. This increases the bending strength of the horizontal plate 122 from 200MPa to 350MPa, effectively suppressing the vibration of the horizontal plate 122 during the deburring process. This structural design improves the overall rigidity of the support 12, enabling it to withstand a maximum radial force of 500N generated during deburring. Simultaneously, the horizontal sliding adjustment of the base 13 is achieved through a sliding groove, with an adjustment accuracy of 0.1mm, meeting the deburring station requirements of different workpieces. Furthermore, the reinforcing rib 123 extends the fatigue life of the support 12 to over 100,000 cycles, making it suitable for long-term mass production.

[0033] like Figures 1 to 3 As shown, the deburring device of the gear hobbing machine also includes a second fastener 16, a washer 17, and a locking nut 18. The second fastener 16 is vertically arranged in the slide groove. The base 13 has a cylindrical structure, and the second fastener 16 is nested inside the base 13. The upper end of the second fastener 16 passes through the upper end of the base 13 and is fitted with the locking nut 18. The washer 17 is sleeved on the second fastener 16 below the horizontal plate 122. The mandrel 19 has a cylindrical structure. The lower end of the mandrel 19 passes through the locking nut 18 and extends into the base 13. The outer wall of the mandrel 19 is threadedly connected to the base 13. The second fastener 16 passes through the mandrel 19, and the outer wall of the second fastener 16 is threadedly connected to the inner wall of the mandrel 19.

[0034] The deburring device of the gear hobbing machine achieves precise locking of the base 13 position and adjustment of the height of the mandrel 19 through a threaded connection structure of the second fastener 16, washer 17, locking nut 18, mandrel 19, and base 13. The second fastener 16 is a fully threaded bolt, which is vertically inserted into the slide groove of the cross plate 122 of the bracket 12. Its lower end is fixed to the bottom of the slide groove by a T-nut, and its upper end passes through the through hole at the top of the base 13, the washer 17, and is threadedly connected to the locking nut 18. The base 13 is fitted on the outside of the second fastener 16. By tightening the locking nut 18, the base 13 is pressed tightly onto the cross plate 122. The washer 17 increases the contact area and prevents the surface of the cross plate 122 from being crushed, thus locking the horizontal position of the base 13. After locking, the sliding resistance is ≥100N. The mandrel 19 has a cylindrical structure with external threads machined at its lower end. After passing through the center hole of the locking nut 18, it engages with the internal threads on the inner wall of the base 13. The vertical height can be adjusted by rotating the mandrel 19. Simultaneously, a second fastener 16 passes through the inner hole of the mandrel 19, with its outer wall threaded to the inner wall of the mandrel 19, forming a triple locking structure of "mandrel 19-base 13-second fastener 16": when adjusting the position of the base 13, the locking nut 18 can be loosened to slide the base 13; when adjusting the height of the mandrel 19, the mandrel 19 can be rotated independently; once both positions are determined, the locking nut 18 and the locking screw at the top of the mandrel 19 are tightened to ensure no relative displacement during deburring. This design ensures the overall rigidity of the tooling while achieving multi-dimensional precise adjustment, making it suitable for deburring workpieces of different thicknesses, and reducing changeover adjustment time to less than 5 minutes.

[0035] Furthermore, in one specific embodiment, the bracket 12 is also provided with a retainer, which is used to engage with the slide rail on the column 11 of the gear hobbing machine frame 10. Specifically, the retainer can be a detachable form such as a clamp or a fastening slider. Since the slide rail on the gear hobbing machine column 11 has high guiding accuracy, this connection method not only facilitates the installation and disassembly of the deburring device of the gear hobbing machine, but also allows for precise position adjustment and convenient use.

[0036] like Figures 1 to 3 As shown, the gear hobbing machine includes a translation component 40, which drives the column 11 to reciprocate horizontally. In this invention, the translation component 40 is a cylinder. The extension and retraction of the cylinder piston rod drives the column 11 to move horizontally. The vertical section of the column 11 is slidably connected to the guide rail provided on the frame 10, which also serves as a guide. Of course, the translation component 40 can also be a screw and nut drive assembly, a gear and rack drive assembly, or a synchronous belt drive assembly.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A deburring device for a gear hobbing machine, characterized in that, include: The bracket (12) is used to connect one end to the column (11) on the frame (10) of the gear hobbing machine; A base (13) is disposed at the other end of the bracket (12); The mandrel (19) is vertically mounted on the base (13); A rolling bearing (14) is sleeved on the upper end of the mandrel (19); The bayonet deflector wheel (15) is fitted outside the rolling bearing (14) and connected to the top of the spindle (19) via a locking assembly (20).

2. The deburring device for a gear hobbing machine as described in claim 1, characterized in that, The locking component (20) includes: A pressure bearing (21) is sleeved on the top of the mandrel (19) to bear axial force; Washer (22) is fitted between the outer surface of the mandrel (19) and the inner ring of the pressure bearing (21); The first fastener (23) passes through the washer (22) and is threaded to the threaded hole at the top of the mandrel (19) for fastening the de-barrel wheel (15) to the top of the mandrel (19).

3. A deburring device for a gear hobbing machine as described in claim 1 or 2, characterized in that, The deburring device for the gear hobbing machine further includes a support assembly (30), which comprises: The first elastic element (31) is sleeved on the spindle (19) below the rolling bearing (14); The positioning ring (32) is sleeved on the spindle (19) below the first elastic member (31), and the upper and lower ends of the first elastic member (31) abut against the rolling bearing (14) and the positioning ring (32) respectively.

4. The deburring device for a gear hobbing machine as described in claim 3, characterized in that, The support component (30) also includes: The second spring (33) is sleeved on the outside of the first elastic element (31). The second spring (33) and the first elastic element (31) rotate in opposite directions. The upper and lower ends of the second spring (33) abut against the rolling bearing (14) and the positioning ring (32) respectively.

5. The deburring device for a gear hobbing machine as described in claim 2, characterized in that, The support (12) includes: The pressure block (121) is vertically arranged, and a plurality of mounting holes are provided on the first side of the pressure block (121) along its height direction for connecting to the gear hobbing machine; A horizontal plate (122) is horizontally arranged, and a groove is provided at the second end of the horizontal plate (122). The base (13) is slidably arranged in the groove. The first end of the horizontal plate (122) is fixedly connected to the second side of the pressure block (121). The reinforcing rib (123) is inclinedly arranged below the horizontal plate (122), with one end connected to the horizontal plate (122) and the other end connected to the pressure block (121).

6. The deburring device for a gear hobbing machine as described in claim 5, characterized in that: The deburring device of the gear hobbing machine also includes a second fastener (16), a washer (17) and a locking nut (18). The second fastener (16) is vertically arranged in the groove. The base (13) is a cylindrical structure. The second fastener (16) is nested in the base (13). The upper end of the second fastener (16) passes through the upper end of the base (13) and the locking nut (18) is provided thereon. The washer (17) is sleeved on the second fastener (16) below the horizontal plate (122).

7. The deburring device for a gear hobbing machine as described in claim 6, characterized in that: The mandrel (19) has a cylindrical structure. The lower end of the mandrel (19) passes through the locking nut (18) and extends into the base (13). The outer wall of the mandrel (19) is threadedly connected to the base (13). The second fastener (16) passes through the mandrel (19), and the outer wall of the second fastener (16) is threadedly connected to the inner wall of the mandrel (19).

8. The deburring device for a gear hobbing machine as described in claim 1, characterized in that: The bracket (12) is also provided with a card holder, which is used to clamp onto the slide rail on the column (11) on the frame (10) of the gear hobbing machine.

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