A hob fixed transmission gear processing device

Abstract

The present invention belongs to the field of gear processing technology, and specifically relates to a hob fixed transmission gear processing device, comprising a base, a support frame on the base, the support frame connected to a limit plate, the limit plate connected to a tool holder; a cutting assembly, the cutting assembly including a sliding frame, the sliding frame connected to a hob; a fixing assembly, the fixing assembly including a placement plate, a gear placed on the placement plate, the placement plate connected to a limit block; a limit assembly, the limit assembly including a lifting plate 1, the lifting plate is connected to a lifting rod, the lifting rod is connected to a lifting plate 2, the lifting plate 1 is hinged to a folding plate 1, and the folding plate 1 is hinged to a folding plate 2. The invention can adjust the inclination angle of the hob according to the cutting parameter requirements before use, and can install hobs of different models and lengths to achieve multi-adaptability of the device. It can also fix gears of different models and sizes and prevent the gears from slipping during the cutting process, thereby affecting the cutting effect.

Description

Technical Field

[0001] The invention belongs to the technical field of gear processing, and in particular relates to a hob fixed type transmission gear processing device. Background Art

[0002] Gear hobbing is a core process in gear manufacturing, and its precision and efficiency directly impact the meshing performance and transmission efficiency of gear pairs. Traditional gear hobbing equipment suffers from significant technical deficiencies in hob adaptability, machining flexibility, and gear size compatibility. This results in high conversion costs and poor precision consistency when producing a wide variety of gears. For example, Chinese application CN119407562A discloses an anti-drift gear groove positioning and cutting device. This device utilizes an adjustable reciprocating assembly to adjust the reciprocating distance of the gear hob, making it more suitable for machining gear blanks of varying thicknesses.

[0003] First, the diversity of gear modules and tooth profiles (involute, cycloid, circular arc) requires frequent hob changes. The aforementioned patent's fixed hob spindle makes it difficult to change hobs and gears of different models. Furthermore, while the aforementioned patent utilizes a positioning mechanism to position the gear blank, the gear rotates during the hob cutting process. Relying solely on support and clamping for position control inevitably results in slippage, affecting cutting stability.

[0004] Secondly, the processing of helical gears requires precise control of the hob installation angle, which must satisfy a strict geometric relationship with the gear helix angle. However, the above patent cannot adjust the inclination angle of the hob, and thus cannot adapt to the processing requirements of gears of different models and sizes, affecting practicality. Summary of the Invention

[0005] The purpose of the present invention is to provide a hob-type transmission gear processing device, which can adjust the inclination angle of the hob according to the cutting parameter requirements before use, and install hobs of different models and lengths to achieve the multi-adaptability of the device. It can also fix gears of different models and sizes and prevent the gears from slipping during the cutting process, affecting the cutting effect.

[0006] The technical solutions adopted by the present invention are as follows:

[0007] A hob fixed type transmission gear processing device, comprising:

[0008] The base has a support frame slidably connected to its upper end, a limit plate fixedly connected to one side of the support frame, and a tool holder rotatably connected to the middle of the limit plate;

[0009] The cutting assembly includes a sliding frame, the sliding frame is slidably connected to the inner cavity of the tool holder, and the inner cavity of the sliding frame is rotatably connected to the hob;

[0010] The fixing assembly includes a placement plate, which is arranged above the base, on which a gear is placed, and an inner cavity of the placement plate is slidably connected to multiple groups of limit blocks, and the outer rings of the multiple groups of limit blocks are movably sleeved in the inner cavity of the gear;

[0011] The limiting assembly includes a lifting plate 1, the inner cavity of the lifting plate 1 is movably connected to a lifting rod, the lower end of the lifting rod is fixedly connected to the lifting plate 2, the outer ring of the lifting plate 1 is hinged to the folding plate 1, the lower end of the folding plate 1 is hinged to the folding plate 2, and the lower end of the folding plate 2 is hinged to the outer ring of the lifting plate 2;

[0012] The sliding frame slides along the tool holder to adjust the inner width of the tool holder, and the tool holder rotates along the limit plate to adjust the inclination angle of the hob;

[0013] When the gear is placed on the placement plate, an appropriate amount of limiting blocks protrude to limit the gear, the lifting plate 2 rises, drives the folding plate 2 and the folding plate 1 to fold, and limits the upper end of the gear.

[0014] In a preferred embodiment, the upper end of the base is fixedly connected to a hollow tube, and the lower end of the support frame is movably sleeved in the hollow tube. An electric push rod is fixedly installed at the lower end of the inner cavity of the base, and the upper end of the electric push rod is fixedly connected to the lower end of the support frame.

[0015] In a preferred embodiment, two groups of positioning plates are fixedly connected to one side of the tool holder close to the limit disk, and the two groups of positioning plates are slidably connected to the inner cavity of the limit disk, and the ends of the two groups of positioning plates close to the support frame pass through the limit disk and are placed on the outside of the limit disk. A plurality of positioning grooves are provided on one side of the limit disk close to the support frame, and the parts of the two groups of positioning plates extending out of the limit disk are both fitted on the outside of the positioning groove, and the parts of the positioning plates located on the outside of the positioning groove are movably connected with positioning rods, and the end of the positioning rod close to the tool holder is inserted into the inner cavity of the positioning groove, and the inner cavity of the support frame is fixedly installed with motor 1, and the output shaft of motor 1 passes through the support frame and the limit disk and is fixedly connected to the rotating shaft of the tool holder.

[0016] In a preferred embodiment, the cutting assembly further comprises a screw rod 1, which is rotatably connected to the inner cavity of the tool holder, and the outer ring of the middle section of the screw rod 1 is threadedly connected to the middle portion of the sliding frame.

[0017] In a preferred embodiment, the lower end of the sliding frame is fixedly connected to a disassembly block, and the rotating shafts at both ends of the hob are rotatably connected to the inner cavities of the sliding frame and the disassembly block, as well as the inner cavity of the tool holder. Motor 2 is fixedly installed on the end of the tool holder away from the sliding frame, and a drive sleeve is fixedly connected to the output shaft of motor 2. The inner ring of the drive sleeve is movably inserted into the rotating shaft of the hob.

[0018] In a preferred embodiment, the fixed assembly also includes a moving rod, which is slidably connected to the middle of the upper end of the base, and limit bars are fixedly installed on the front and rear sides of the upper end of the base. The front and rear ends of the moving rod are contacted and connected on the side where the two sets of limit bars are close to each other. An electric push rod 2 is fixedly installed in the middle of the inner cavity of the base, and the output end of the electric push rod 2 is fixedly connected to the lower end of the moving rod.

[0019] In a preferred embodiment, the fixing assembly also includes motor three, which is installed at the lower end of the moving rod, and a rotating rod is fixedly connected to the output shaft of motor three, and the rotating rod is rotatably connected to the inner cavity of the moving rod through a ball bearing, and the upper end of the rotating rod passes through the moving rod, and the middle part of the lower end of the placing plate is fixedly connected to the upper end of the part of the rotating rod extending out of the moving rod, and the upper end of the placing plate is provided with multiple groups of grooves, and the multiple groups of limit blocks are respectively slidably connected in the multiple groups of grooves, and the lower ends of the limit blocks are fixedly connected to springs, and the lower ends of the springs are fixedly connected to the lower ends of the inner cavity of the grooves.

[0020] In a preferred embodiment, there are multiple groups of limit blocks, namely four groups of bar blocks and four groups of arc blocks, wherein the bar blocks correspond to the shaft holes of the gears, while the arc blocks are symmetrically distributed on both sides of the upper end of the placement plate, and the arc blocks correspond to the circular holes of the gears.

[0021] In a preferred embodiment, the limiting assembly also includes a cross tube, which is fixedly installed in the middle of the upper end of the placing plate. The middle of the upper end of the cross tube is threadedly connected to the second screw rod, the lower end of the second screw rod extends into the inner cavity of the cross tube, and the middle of the upper end of the lifting plate one is rotatably connected to the lower end of the second screw rod.

[0022] In a preferred embodiment, the lifting rod is movably sleeved in the inner cavity of the screw rod 2, and the lower end of the lifting rod passes through the screw rod 2 and the lifting plate 1 and is fixedly connected to the lifting plate 2, and the folding plate 1 and the folding plate 2 are both slidably connected in the groove of the cross tube.

[0023] The technical effects achieved by the present invention are:

[0024] The limiting disk and tool holder of the present invention can adjust the inclination angle of the hob according to the cutting parameter requirements before use, thereby responding to different cutting scenarios and requirements; before cutting, the tool holder is driven to rotate along the center of the circle of the limiting disk, and after rotating to a suitable angle, the positioning part of the tool holder is inserted into the fixed part of the limiting disk to fix the tool holder, thereby achieving the adjustment of the inclination angle of the tool holder and the hob to meet different cutting parameter requirements;

[0025] The cutting assembly of the present invention can realize the convenient disassembly of the hob and the installation of hobs of different models and lengths, thereby realizing the multi-adaptability of the device; before performing the gear cutting operation, the driving part of the cutting assembly is rotated to drive the sliding frame to move, thereby adjusting the distance between the sliding frame and the tool holder, and then the blocking part of the sliding frame and the tool holder is removed, and the hob is installed into the inner cavity of the sliding frame and the tool holder, and connected to the driving part of the cutting assembly, so that the driving part can conveniently drive the hob to rotate for cutting operation, realize the installation of hobs of different lengths and sizes, and improve the applicability of the device;

[0026] The fixing assembly and limiting assembly of the present invention can fix gears of different models and sizes, and prevent the gears from slipping during the cutting process, which affects the cutting effect; during the cutting process, the gear is placed on the placement plate, and the gear will squeeze the limiting blocks with different thickness parameters into the placement plate, and make the remaining limiting blocks fit in the shaft hole of the gear for limiting, and then pull up the folding part of the limiting assembly to make the folding part of the limiting assembly convex, and then drive the driving part of the limiting assembly to rotate, so that the convex folding part descends and fits on the upper end of the gear for fixing, and after the gear is fixed, the driving part of the fixing assembly drives the placement plate and the gear to rotate to perform the cutting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 is a schematic cross-sectional view of the base in the present invention;

[0029] Figure 3 is a schematic cross-sectional view of the support frame of the present invention;

[0030] Figure 4 It is a structural schematic diagram of the tool holder in the present invention;

[0031] Figure 5 It is a structural schematic diagram of the limiting plate in the present invention;

[0032] Figure 6 is an exploded schematic diagram of the cutting assembly of the present invention;

[0033] Figure 7 It is a structural schematic diagram of the fixing assembly in the present invention;

[0034] Figure 8 is a schematic cross-sectional view of the movable rod of the present invention;

[0035] Figure 9 It is a schematic diagram of the positions of the gears and the limit blocks in the present invention;

[0036] Figure 10 It is a cross-sectional schematic diagram of the placement tray in the present invention;

[0037] Figure 11 It is a schematic diagram of the position of the limit assembly in the present invention;

[0038] Figure 12 It is a cross-sectional schematic diagram of the cross tube in the present invention;

[0039] Figure 13 It is a cross-sectional schematic diagram of the screw rod 2 in the present invention;

[0040] Figure 14 It is a structural schematic diagram of the folding plate 2 in the present invention.

[0041] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0042] 10. Base; 11. Hollow tube; 12. Support frame; 13. Electric push rod 1; 14. Limiting plate; 15. Tool holder; 16. Positioning plate; 17. Positioning slot; 18. Positioning rod; 19. Motor 1; 20. Cutting assembly; 21. Sliding frame; 22. Screw rod 1; 23. Disassembly block; 24. Hob; 25. Motor 2; 26. Drive sleeve; 30. Fixed assembly; 31. Moving rod; 32. Limiting strip; 33. Electric push rod 2; 34. Placement plate; 35. Motor 3; 36. Rotating rod; 37. Gear; 38. Limiting block; 39. Spring; 40. Limiting assembly; 41. Cross tube; 42. Screw rod 2; 43. Lifting plate 1; 44. Lifting rod; 45. Lifting plate 2; 46. Folding plate 1; 47. Folding plate 2. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0045] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it constitute a separate or selective embodiment that is mutually exclusive with other embodiments.

[0046] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0047] Please see the attached Figures 1 to 4 、 Figures 8 to 10 as well as Figure 13 As shown, this embodiment provides a hob fixed type transmission gear processing device, comprising:

[0048] A base 10, the upper end of the base 10 is slidably connected to a support frame 12, one side of the support frame 12 is fixedly connected to a limit plate 14, and the middle part of the limit plate 14 is rotatably connected to a tool holder 15;

[0049] The cutting assembly 20 includes a sliding frame 21, which is slidably connected to the inner cavity of the tool holder 15, and the inner cavity of the sliding frame 21 is rotatably connected to the hob 24;

[0050] The fixing assembly 30 includes a placement plate 34, which is disposed above the base 10. A gear 37 is placed on the placement plate 34. The inner cavity of the placement plate 34 is slidably connected to multiple sets of limit blocks 38. The outer rings of the multiple sets of limit blocks 38 are movably sleeved in the inner cavity of the gear 37.

[0051] The limiting assembly 40 includes a lifting plate 1 43. The inner cavity of the lifting plate 1 43 is movably connected to a lifting rod 44. The lower end of the lifting rod 44 is fixedly connected to the lifting plate 2 45. The outer ring of the lifting plate 1 43 is hinged to a folding plate 1 46. The lower end of the folding plate 1 46 is hinged to a folding plate 2 47. The lower end of the folding plate 2 47 is hinged to the outer ring of the lifting plate 2 45.

[0052] The sliding frame 21 slides along the tool holder 15 to adjust the inner width of the tool holder 15 , and the tool holder 15 rotates along the limit plate 14 to adjust the tilt angle of the hob 24 ;

[0053] When the gear 37 is placed on the placement plate 34, an appropriate amount of the limit block 38 protrudes to limit the gear 37, and the lifting plate 2 45 rises, driving the folding plate 2 47 and the folding plate 1 46 to fold in half, and limiting the upper end of the gear 37.

[0054] It should be noted that the lifting plate 1 43 and the lifting plate 2 45 are both circular plates, and the outer rings are provided with four groups of grooves, and the folding plate 1 46 and the folding plate 2 47 are both hinged in the grooves.

[0055] In this embodiment, before cutting, the cutting assembly 20 adjusts the position of the sliding frame 21, and then regulates the distance between the sliding frame 21 and the tool holder 15, and then the roller 24 is installed in the tool holder 15 and the sliding frame 21, and then the tool holder 15 is driven to rotate on the limit plate 14, and the inclination angle of the tool holder 15 and the roller 24 is adjusted, and then the gear 37 is placed on the placement plate 34, and the axial hole of the gear 37 is limited and fixed by the limit block 38, and then the lifting rod 44 is pulled up to fold the folding plate 2 47 and the folding plate 1 46 in half, and then the folded folding plate 2 47 and folding plate 1 46 are driven to descend to fix the upper end of the gear 37, and then the fixing assembly 30 drives the gear 37 close to the roller 24, and drives the gear 37 to rotate and contact the roller 24 for cutting operation.

[0056] Next, please refer to Figures 1 to 5 The upper end of the base 10 is fixedly connected to the hollow tube 11, and the lower end of the support frame 12 is movably sleeved in the hollow tube 11. The lower end of the inner cavity of the base 10 is fixedly installed with an electric push rod 13, and the upper end of the electric push rod 13 is fixedly connected to the lower end of the support frame 12;

[0057] Two groups of positioning plates 16 are fixedly connected to one side of the tool holder 15 near the limit disk 14, and the two groups of positioning plates 16 are slidably connected to the inner cavity of the limit disk 14, and the ends of the two groups of positioning plates 16 near the support frame 12 all pass through the limit disk 14 and are placed on the outside of the limit disk 14. A plurality of positioning grooves 17 are provided on one side of the limit disk 14 near the support frame 12. The parts of the two groups of positioning plates 16 extending out of the limit disk 14 are both fitted on the outside of the positioning groove 17, and the parts of the positioning plates 16 located on the outside of the positioning groove 17 are movably connected with a positioning rod 18, and the end of the positioning rod 18 near the tool holder 15 is inserted into the inner cavity of the positioning groove 17, and a motor 19 is fixedly installed in the inner cavity of the support frame 12. The output shaft of the motor 19 passes through the support frame 12 and the limit disk 14 and is fixedly connected to the rotating shaft of the tool holder 15.

[0058] It should be noted that the inner cavity of the limiting plate 14 is provided with two sets of through grooves, and the two sets of positioning plates 16 are slidably connected to the inner cavity of the through grooves. The inner diameter movable space of the through grooves is adapted to the space between the vacant positions of the positioning grooves 17, so as to avoid the positioning plates 16 being unable to fit with the inner cavity wall of the limiting plate 14 when connected to the two holes at the upper and lower ends of the positioning grooves 17, thereby affecting stability.

[0059] The positioning grooves 17 are distributed in an arc shape, and the center of the arc is the same as the position of the rotating shaft of the motor 19. Each group of positioning grooves 17 is provided with three holes, and the arc distance between the upper and lower holes should be less than 3°. The purpose is that when the positioning plate 16 is connected to the positioning grooves 17 at different positions through the positioning rod 18, the inclination angle of the tool holder 15 can be limited, and then the inclination angle of the hob 24 can be limited, which is convenient for adapting to different models of hobs 24.

[0060] In this embodiment, during use, motor 19 drives the tool holder 15 to rotate along the center of the circle of the limit plate 14. When the rotation reaches the appropriate angle, motor 19 is stopped, and then the positioning plate 16 is aligned with the positioning slot 17. The positioning rod 18 passes through the positioning plate 16 and is inserted into the inner cavity of the positioning slot 17, thereby fixing the tool holder 15 and adjusting the tilt angle of the tool holder 15 and the hob 24. During the cutting operation, the electric push rod 13 drives the support frame 12 to descend, driving the hob 24 to descend close to the gear 37 to perform the cutting operation.

[0061] Next, please refer to Figures 4 to 6 The cutting assembly 20 further includes a screw rod 22, which is rotatably connected to the inner cavity of the tool holder 15 through a ball bearing, and the outer ring of the middle section of the screw rod 22 is threadedly connected to the middle portion of the sliding frame 21;

[0062] The lower end of the sliding frame 21 is fixedly connected to the disassembly block 23 by bolts, and the rotating shafts at both ends of the hob 24 are respectively rotatably connected to the inner cavity of the sliding frame 21 and the disassembly block 23, as well as the inner cavity of the tool holder 15. The end of the tool holder 15 away from the sliding frame 21 is fixedly installed with a motor 25, and the output shaft of the motor 25 is fixedly connected to a drive sleeve 26, and the inner ring of the drive sleeve 26 is movably inserted into the rotating shaft of the hob 24.

[0063] It should be noted that the outer end of the screw rod 22 is fixedly connected to a gripping handle, which is intended to facilitate driving the screw rod 22 to rotate;

[0064] The tool holder 15 is provided with the same structure as the sliding frame 21 and the disassembly block 23. The purpose is to use the tool holder 15 and the sliding frame 21 to fix the hob 24. At the same time, the disassembly block 23 placed below is used to press the hob 24 downward for cutting without putting pressure on the disassembly block 23, thereby preventing the disassembly block 23 from falling off and affecting stability.

[0065] The inner cavity of the drive sleeve 26 is a hexagonal groove, and a hexagonal block is provided on one set of rotating shafts of the hob 24, and the hexagonal block is movably inserted into the hexagonal groove, so that the hob 24 can be quickly removed from the drive sleeve 26 and can also be driven to rotate by the drive sleeve 26.

[0066] In this embodiment, before use, the disassembly block 23 is removed, and then the screw 1 22 is rotated to drive the slide 21 to slide within the inner cavity of the tool holder 15, adjusting the distance between the slide 21 and the tool holder 15. The ends of the hob 24 are then connected to the inner cavities of the slide 21 and the tool holder 15, respectively. The rotating shaft of the hob 24 is inserted into the drive sleeve 26, and the disassembly block 23 is then fixed to the lower ends of the slide 21 and the tool holder 15 to secure the hob 24. During the cutting operation, the motor 25 drives the drive sleeve 26 to rotate, driving the hob 24 to rotate together and cut.

[0067] Next, please refer to Figures 7 to 11 The fixing assembly 30 also includes a moving rod 31, which is slidably connected to the middle of the upper end of the base 10. Limit bars 32 are fixedly installed on both the front and rear sides of the upper end of the base 10. The front and rear ends of the moving rod 31 are contacted and connected to the side where the two sets of limit bars 32 are close to each other. An electric push rod 2 33 is fixedly installed in the middle of the inner cavity of the base 10, and the output end of the electric push rod 2 33 is fixedly connected to the lower end of the moving rod 31;

[0068] The fixing assembly 30 also includes a motor 35, which is mounted on the lower end of the moving rod 31, and a rotating rod 36 is fixedly connected to the output shaft of the motor 35. The rotating rod 36 is rotatably connected to the inner cavity of the moving rod 31 through a ball bearing, and the upper end of the rotating rod 36 passes through the moving rod 31. The middle part of the lower end of the placement plate 34 is fixedly connected to the upper end of the portion of the rotating rod 36 extending from the moving rod 31. The upper end of the placement plate 34 is provided with multiple groups of grooves, and multiple groups of limit blocks 38 are respectively slidably connected to the multiple groups of grooves. The lower ends of the limit blocks 38 are fixedly connected to springs 39, and the lower ends of the springs 39 are fixedly connected to the lower ends of the inner cavities of the grooves.

[0069] The limit blocks 38 are provided in multiple groups, namely four groups of bar blocks and four groups of arc blocks. The bar blocks correspond to the shaft holes of the gear 37, while the arc blocks are symmetrically distributed on both sides of the upper end of the placement plate 34, and the arc blocks correspond to the circular holes of the gear 37.

[0070] It should be noted that a protective shell is provided on the outer edge of the motor 35, and the protective shell is fixedly mounted on the lower end of the moving rod 31, so that the motor 35 can move along with the moving rod 31;

[0071] Multiple sets of isolation plates are fixedly connected to the inner cavity at the upper end of the placement plate 34, and multiple sets of limit blocks 38 and springs 39 are separated by the isolation plates. Grooves that match the thickness of the isolation plates are opened between adjacent limit blocks 38, so that adjacent limit blocks 38 can fit together to improve strength, and can also rely on the isolation plates to isolate them, preventing adjacent springs 39 from being entangled and affecting use;

[0072] A spring 39 is also fixedly connected to the bottom of the arc-shaped limit block 38, and convex strips are provided at both ends of the limit block 38, and the convex strips are slidably connected to the inner cavity of the placement plate 34, aiming to limit the range of movement of the limit block 38 and prevent the limit block 38 from extending directly and affecting use.

[0073] Preferably, in order to ensure that different types of gears 37 can be adapted, multiple sets of limit blocks 38 should be set, and their thickness data should be set to the specific inner diameter data of the gear 37 that is commonly processed. The purpose is that when different types of gears 37 are placed on the placement plate 34, the limit blocks 38 that do not match the inner diameter width can be pressed into the inner cavity of the placement plate 34, and the remaining protruding limit blocks 38 can fit into the inner cavity of the gear 37, thereby ensuring the stability of the gear 37 during processing.

[0074] Preferably, to ensure the normal operation of the device, the device should be connected to an external control unit to control the rotation speed of the hob 24 and the placement plate 34, so that the hob 24 and the gear 37 can be cut under appropriate rotation speed conditions to avoid affecting the yield of the gear 37.

[0075] In this embodiment, before cutting, the gear 37 is placed on the placement tray 34. The downward pressure of the gear 37 forces a stopper 38, which does not match the inner diameter of the gear 37, into the inner cavity of the placement tray 34. The stopper 38, which matches the inner diameter of the gear 37, then extends under the elastic force of the spring 39, securing the inner cavity of the gear 37. During cutting, the third motor 35 rotates the rotating rod 36 and the placement tray 34, driving the gear 37 to rotate together and perform the cutting operation. Simultaneously, the second electric push rod 33 drives the moving rod 31, moving the placement tray 34 and the gear 37 closer to the hob 24 for cutting.

[0076] Please refer again Figures 11 to 14 The limiting assembly 40 also includes a cross tube 41, which is fixedly mounted on the middle portion of the upper end of the placement plate 34. The middle portion of the upper end of the cross tube 41 is threadedly connected to a second screw rod 42, and the lower end of the second screw rod 42 extends into the inner cavity of the cross tube 41. The middle portion of the upper end of the lifting plate 1 43 is rotatably connected to the lower end of the second screw rod 42 through a ball bearing.

[0077] The lifting rod 44 is movably sleeved in the inner cavity of the screw rod 2 42, and the lower end of the lifting rod 44 passes through the screw rod 2 42 and the lifting plate 1 43 and is fixedly connected to the lifting plate 2 45. The folding plate 1 46 and the folding plate 2 47 are both slidably connected in the groove of the cross tube 41.

[0078] It should be noted that the lower end of the folding plate 47 in contact with the gear 37 is fixedly connected with an anti-slip pad, which is intended to improve the stability of the upper end of the gear 37.

[0079] The outer surface of the cross tube 41 is provided with four groups of strip-shaped through grooves, and the width of the through grooves is adapted to the width of the folding plate 1 46 and the folding plate 2 47. The folding plate 1 46 and the folding plate 2 47 are both slidably connected in the strip-shaped through grooves. The purpose is to use the folding plate 1 46 and the folding plate 2 47 to limit the range of motion of the two groups of lifting plates, so as to prevent the two groups of lifting plates from rotating simultaneously when the screw rod 2 42 rotates, which would affect the use.

[0080] The upper ends of the screw rod 2 42 and the lifting rod 44 are fixedly connected with a gripping handle, which is intended to facilitate the control of the rotation of the screw rod 2 42 and the lifting and lowering of the lifting rod 44.

[0081] In this embodiment, when the gear 37 is placed on the placement tray 34, the lifting rod 44 is pulled upward to raise the lifting plate 2 45, driving the folding plate 2 47 and the folding plate 1 46 to fold in half. Then, the screw rod 2 42 is rotated to lower the lifting plate 1 43, as well as the folding plates 2 47 and 1 46, to limit the upper end of the gear 37. At the same time, the folded folding plates 2 47 and 1 46 form a cone, so that the gear 37 can be aligned with the center of the placement tray 34 during the downward pressure. At the same time, the downward pressure of the folding plates 2 47 and 1 46 pushes the gear 37 to press the stopper 38, which has a mismatched inner diameter, into the placement tray 34, thereby limiting and fixing the gear 37.

[0082] The present invention operates as follows: Before use, dismantle block 23 is removed. Screw 1 22 is then rotated to adjust the distance between slide 21 and tool holder 15. The ends of hob 24 are connected to the inner cavities of slide 21 and tool holder 15. The rotating shaft of hob 24 is inserted into drive sleeve 26. Dismantle block 23 is then secured to the lower ends of slide 21 and tool holder 15 to secure hob 24. Motor 1 19 then drives tool holder 15 to rotate. Once the tool holder 15 has rotated to the appropriate angle, positioning plate 16 is aligned with positioning slot 17. Positioning rod 18 is inserted through positioning plate 16 and into the inner cavity of positioning slot 17, thereby adjusting the tilt angle of tool holder 15 and hob 24. Gear 37 is then placed on the placement tray 34. Lifting rod 44 is pulled upward to raise lifting plate 2 45, driving folding plate 2 47 and folding plate 1 46 to fold in half. Screw 2 42 is then rotated to lower lifting plate 1 43, folding plate 2 47, and folding plate 1 46, thereby limiting the upper end of gear 37 and forcing gear 37 downward. A stopper 38, which does not match the inner diameter of gear 37, is pressed into the placement tray 34. The matching stopper 38, then extended by the elastic force of spring 39, limits the inner cavity of gear 37. Once the preparations are complete, motor 35 rotates rotating rod 36 and placement tray 34, driving gear 37 to rotate together and perform the cutting operation. At the same time, the electric push rod 2 33 will drive the moving rod 31 to move, driving the placement plate 34 and the gear 37 to approach the hob 24, and the electric push rod 1 13 will drive the support frame 12 to descend, driving the hob 24 to descend and approach the gear 37. At the same time, the motor 25 drives the driving sleeve 26 to rotate, driving the hob 24 to rotate together to cut the gear 37, thereby realizing the cutting processing of the gear 37.

[0083] The foregoing is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A hob fixed transmission gear processing device, characterized by: include: The base has a support frame slidably connected to its upper end, a limit plate fixedly connected to one side of the support frame, and a tool holder rotatably connected to the middle of the limit plate; The cutting assembly includes a sliding frame, the sliding frame is slidably connected to the inner cavity of the tool holder, and the inner cavity of the sliding frame is rotatably connected to the hob; The fixing assembly includes a placement plate, which is arranged above the base, on which a gear is placed, and an inner cavity of the placement plate is slidably connected to multiple groups of limit blocks, and the outer rings of the multiple groups of limit blocks are movably sleeved in the inner cavity of the gear; The limiting assembly includes a lifting plate 1, the inner cavity of the lifting plate 1 is movably connected to a lifting rod, the lower end of the lifting rod is fixedly connected to the lifting plate 2, the outer ring of the lifting plate 1 is hinged to the folding plate 1, the lower end of the folding plate 1 is hinged to the folding plate 2, and the lower end of the folding plate 2 is hinged to the outer ring of the lifting plate 2; The sliding frame slides along the tool holder to adjust the inner width of the tool holder, and the tool holder rotates along the limit plate to adjust the inclination angle of the hob; When the gear is placed on the placement plate, an appropriate amount of limit block protrudes to limit the gear, the lifting plate 2 rises, drives the folding plate 2 and the folding plate 1 to fold, and limits the upper end of the gear; The upper end of the base is fixedly connected to a hollow tube, and the lower end of the support frame is movably sleeved in the hollow tube. The lower end of the inner cavity of the base is fixedly installed with an electric push rod 1, and the upper end of the electric push rod 1 is fixedly connected to the lower end of the support frame; Two sets of positioning plates are fixedly connected to one side of the tool holder near the limit disk, and the two sets of positioning plates are slidably connected to the inner cavity of the limit disk, and one end of the two sets of positioning plates near the support frame passes through the limit disk and is placed on the outside of the limit disk. A plurality of positioning slots are provided on one side of the limit disk near the support frame, and the parts of the two sets of positioning plates extending out of the limit disk are fit to the outside of the positioning slot, and the parts of the positioning plates located on the outside of the positioning slot are movably connected with positioning rods, and one end of the positioning rod near the tool holder is inserted into the inner cavity of the positioning slot, and a motor 1 is fixedly installed in the inner cavity of the support frame, and the output shaft of the motor 1 passes through the support frame and the limit disk and is fixedly connected to the rotating shaft of the tool holder; The cutting assembly also includes a screw rod 1, which is rotatably connected to the inner cavity of the tool holder, and the outer ring of the middle section of the screw rod 1 is threadedly connected to the middle part of the sliding frame; The lower end of the sliding frame is fixedly connected to a disassembly block, and the rotating shafts at both ends of the hob are rotatably connected to the inner cavities of the sliding frame and the disassembly block, as well as the inner cavity of the tool holder. Motor 2 is fixedly installed on the end of the tool holder away from the sliding frame, and a drive sleeve is fixedly connected to the output shaft of motor 2. The inner ring of the drive sleeve is movably inserted into the rotating shaft of the hob.

2. The hob fixed type transmission gear processing device according to claim 1, characterized in that: The fixed assembly also includes a moving rod, which is slidably connected to the middle part of the upper end of the base. Limit bars are fixedly installed on the front and rear sides of the upper end of the base. The front and rear ends of the moving rod are contacted and connected on the side where the two sets of limit bars are close to each other. An electric push rod 2 is fixedly installed in the middle of the inner cavity of the base, and the output end of the electric push rod 2 is fixedly connected to the lower end of the moving rod.

3. The hob fixed type transmission gear processing device according to claim 2, characterized in that: The fixed assembly also includes motor three, which is installed at the lower end of the moving rod, and a rotating rod is fixedly connected to the output shaft of motor three. The rotating rod is rotatably connected to the inner cavity of the moving rod through a ball bearing, and the upper end of the rotating rod passes through the moving rod. The middle part of the lower end of the placement plate is fixedly connected to the upper end of the part of the rotating rod extending out of the moving rod. Multiple groups of grooves are provided at the upper end of the placement plate, and multiple groups of limit blocks are respectively slidably connected to the multiple groups of grooves, and the lower ends of the limit blocks are fixedly connected to springs, and the lower ends of the springs are fixedly connected to the lower ends of the inner cavity of the grooves.

4. The hob fixed type transmission gear processing device according to claim 3, characterized in that: There are multiple groups of limit blocks, namely four groups of bar blocks and four groups of arc blocks. The bar blocks correspond to the shaft holes of the gears, while the arc blocks are symmetrically distributed on both sides of the upper end of the placement plate, and the arc blocks correspond to the circular holes of the gears.

5. The hob fixed type transmission gear processing device according to claim 4, characterized in that: The limiting assembly also includes a cross tube, which is fixedly installed in the middle of the upper end of the placement plate. The middle of the upper end of the cross tube is threadedly connected to the second screw rod, the lower end of the second screw rod extends into the inner cavity of the cross tube, and the middle of the upper end of the lifting plate one is rotatably connected to the lower end of the second screw rod.

6. The hob fixed type transmission gear processing device according to claim 5, characterized in that: The lifting rod is movably sleeved in the inner cavity of the screw rod 2, and the lower end of the lifting rod passes through the screw rod 2 and the lifting plate 1 and is fixedly connected to the lifting plate 2. The folding plate 1 and the folding plate 2 are both slidably connected in the groove of the cross tube.

Images